Wire assembly for an electrochromic window, electrochromic window, insulated glass unit and electronic structure

Wire assembly for an electrochromic window, electrochromic window, insulating glass unit and electronic structure

wire assembly for an electrochromic window, electrochromic window, insulated glass unit AND electronic structure

The disclosed embodiments relate generally to optically switchable devices, and more particularly to connectors for optically switchable windows.

Various optically switchable devices can be used to control the tint, reflectance, etc. of the panes. An electrochromic device is generally one example of an optically switchable device. Electrochromism is a phenomenon in which a material exhibits a reversible electrochemically mediated change in an optical property when placed in a different electronic state, usually by encountering a voltage change. The manipulated optical property is typically one or more of color, transmittance, absorptance, and reflectance. A well-known electrochromic material is tungsten trioxide (WO ₃). Tungsten trioxide is a cathodic electrochromic material in which a color transition (transparent to blue) occurs due to electrochemical reduction. <br/>Chromic materials can be incorporated into, for example, windows for domestic, commercial, and other uses. The color, transmittance, absorption and/or reflectance of such windows can be changed by inducing a change in the electrochromic material, ie, an electrochromic window is one that can be electronically darkened or brightened. A small voltage applied to an electrochromic device of a window will cause the window to darken; reversing the voltage causes the window to lighten. This capability allows control of the amount of light passing through the window and presents a great opportunity to make electrochromic windows not only for aesthetic purposes but also for energy saving. <br/>Because energy saving is the most important in modern energy policy, it is expected that the electrochromic window industry will grow steadily in the next few years. An important aspect of electrochromic window engineering is how to integrate electrochromic windows into new and existing (retrofit) applications. Of particular importance is how power is delivered to the electrochromic glazing through the frame and associated structures.

Connectors for optically switchable devices, including electrochromic devices, are disclosed herein. In some embodiments, a connector and an electrochromic device may be associated with or incorporated into an insulating glass unit (IGU), a window assembly, or a window unit. <br/>In one embodiment, a window unit includes an IGU including an optically switchable pane. A wire assembly is attached to an edge of the IGU and includes wires in electrical communication with different electrodes of the optically switchable pane. A floating connector is attached to the distal end of the wire assembly, wherein the floating connector is electrically coupled to the optically switchable pane. The floating connector includes a flange and a nose extending from the flange a distance approximately equal to a thickness of a first frame in which the IGU is to be mounted. The nose includes one end face of at least two exposed contacts exhibiting opposite polarity. There may be other contacts to, for example, communicate to a logic circuit in the window unit. The floating connector further includes two holes in the flange for securing the floating connector to the first frame. The two holes in the flange are arranged relative to the nose so that the nose is closer to one of the holes than to the other, thereby requiring that when the floating connector is fastened to the first frame The two exposed contacts are arranged in a defined orientation. In other embodiments, the floating connector comprises an asymmetrical element in the shape of the nose and/or the flange which can only be installed in one direction. <br/>In another embodiment, a window assembly includes an IGU including an optically switchable pane. A first connector is mounted to the IGU in an encapsulant of the IGU. The first connector includes exposed contacts electrically coupled to leads extending from the optically switchable pane and through the IGU (eg, around the perimeter of a spacer of the IGU) and to the first connector. The first connector further includes a first ferromagnetic element which is itself magnetizable. A wire assembly is configured to be removably mounted to the IGU through the first connector. The wire assembly includes at least two wires extending from a second connector and electrically coupled to the second connector. The second connector includes a surface having contacts and the surface is shaped for mechanical engagement to the first connector. The second connector further includes a second ferromagnetic element which is itself magnetizable. At least one of the first ferromagnetic element and the second ferromagnetic element is magnetized such that the first connector and the second connector can magnetically engage each other to provide electrical communication between their respective contacts . <br/>In another embodiment, a window system includes a first IGU. The first IGU includes a first optically switchable pane and a first connector in electrical communication with electrodes of the first optically switchable pane. A first coupling unit includes two connectors linked by a flexible ribbon cable, wherein a first of the two connectors is configured to mate with the first connector. Some embodiments include pre-wired spacers, electrical connection systems for IGUs that include at least one optical device, and IGUs that include these systems. In some embodiments, an onboard controller is part of the electrical connection system. Many components of these electrical connection systems can be embedded within a secondary seal. The electrical connection systems described herein can include components for providing power to the IGU at almost any location around the perimeter of the IGU. In this way, field installers are afforded maximum convenience and flexibility when installing IGUs with optical devices such as electrochromic devices. These and other features and advantages will be described in further detail herein with reference to the associated drawings.

It should be appreciated that while the disclosed embodiments focus on electrochromic (EC) windows (also known as smart windows), the concepts disclosed herein can be applied to other types of optically switchable devices, including liquid crystal devices, suspended particle devices etc. For example, any of the disclosed embodiments may incorporate a liquid crystal device or suspended particle device instead of an electrochromic device. <br/>An IGU may contain a transparent portion of a "window". In the following description, an IGU may comprise two substantially transparent substrates (eg, two glass panes), wherein at least one of the substrates comprises an electrochromic device disposed thereon, and the substrates have disposed thereon A separator (or "spacer") between them. One or more of these substrates may itself be a structure with a plurality of substrates. An IGU is typically hermetically sealed to have an interior area isolated from the surrounding environment. A window assembly may include an IGU, electrical connectors for coupling one or more electrochromic devices of the IGU to a window controller, and a frame supporting the IGU and associated wiring. <br/>Orienting the reader to embodiments for delivering power to one or more electrochromic devices in an IGU and/or window assembly, presenting a description of the power curve for shifting an electrochromic window An exemplary description. 1 shows an example of a voltage distribution for driving the optical state transition of an electrochromic device. The magnitude of the DC voltage applied to an electrochromic device can depend in part on the thickness of the electrochromic stack of the electrochromic device and the size (eg, area) of the electrochromic device. A voltage profile 100 includes the following sequence: a negative ramp 102 , a negative hold 103 , a positive ramp 104 , a negative hold 106 , a positive ramp 108 , a positive hold 109 , a negative ramp 110 and a positive hold 112 . Note that the voltage remains constant during the length of time the device is held in its defined optical state (ie, negative hold 106 and positive hold 112). Negative ramp 102 drives the device to the colored state and negative hold 106 maintains the device in the colored state for a desired period of time. The negative hold 103 can be for a particular duration or until another condition is met, such as transferring a desired amount of charge sufficient to cause, for example, a desired change in coloration. A positive ramp 104 that increases the voltage in the negative voltage ramp 102 from the maximum value in the negative hold 106 reduces leakage current when the colored state is maintained at negative hold 106 . The ramp 108 drives the electrochromic device from a colored state to a faded state. Hold 112 maintains the device in the faded state for a desired period of time. Positive hold 109 can be for a particular duration or until another condition is met, such as transferring a desired amount of charge sufficient to cause, for example, a desired change in coloration. Negative ramp 110 , which reduces the voltage from the maximum value in positive ramp 108 , reduces leakage current when the faded state is maintained at positive hold 112 . <br/>U.S. Patent Application No. 13/049,623 (now U.S. Patent No. 8,254,013) entitled "CONTROLLING TRANSITIONS IN OPTICALLY SWITCHABLE DEVICES" filed on March 16, 2011, can find information about the Further details of the voltage control algorithm for optical state transitions in chromic devices, which is hereby incorporated by reference in its entirety. <br/>Using a voltage control algorithm, there may be associated wiring and connections to powered electrochromic devices. FIG. 2 shows an example of a schematic cross-sectional view of an electrochromic device 200 . The electrochromic device 200 includes a substrate 205 . The substrate can be transparent and can be made of, for example, glass. A first transparent conductive oxide (TCO) layer 210 is on the substrate 205 , wherein the first TCO layer 210 is the first of two conductive layers used to form the electrodes of the electrochromic device 200 . The electrochromic stack 215 may comprise (i) an electrochromic (EC) layer, (ii) an ionically conducting (IC) layer and (iii) a counter electrode (CE) layer to form where the IC layer separates the EC layer stack with one of the CE layers. The electrochromic stack 215 is sandwiched between a first TCO layer 210 and a second TCO layer 220 , the TCO layer 220 being the second of the two conductive layers used to form the electrodes of the electrochromic device 200 . The first TCO layer 210 contacts a first bus bar 230 , and the second TCO layer 220 contacts a second bus bar 225 . Wires 231 and 232 are connected to bus bars 230 and 225 respectively and form a wire assembly (not shown) that terminates in a connector 235 . The wires of the other connector 240 can be connected to a controller capable of effecting a transition of the electrochromic device 200 (eg, from a first optical state to a second optical state). Connectors 235 and 240 can be coupled such that the controller can drive the optical state transitions of electrochromic device 200 . Further details regarding electrochromic devices can be found in US Patent Application Serial No. 12/645,111, filed December 22, 009, entitled "FABRICATION OF LOW DEFECTIVITY ELECTROCHROMIC DEVICES." U.S. Patent Application No. 12/645,159, filed December 22, 2009, and U.S. Patent Application No. 12/772,055, filed April 30, 2010, each entitled "ELECTROCHROMIC DEVICES" (now U.S. Patent No. 8,300,298 No.), U.S. Patent Application No. 12/814,277, filed June 11, 2010, and U.S. Patent Application No. 12/814,279, filed June 11, 2010. Further details regarding electrochromic devices can also be found , each of the foregoing applications is hereby incorporated by reference in its entirety. <br/>There is also how wired electrochromic glazing is incorporated into an IGU and how the IGU is incorporated (eg ) a state in a framework. FIG. 3 shows an example of operations for fabricating an IGU 325 including an electrochromic pane 305 and incorporating the IGU 325 into a frame 327 . The electrochromic pane 305 has an electrochromic device (not shown, but on surface A for example) and a bus bar 310 that provides power to the electrochromic device, which matches another glass pane 315 . As noted above, the electrochromic pane may comprise, for example, an electrochromic device similar to that shown in FIG. 2 . In some embodiments, the electrochromic device is solid state and inorganic. During manufacture of IGU 325 , a separator 320 is sandwiched between and registered to glass panes 305 and 315 . IGU 325 has an associated interior space defined by the faces of the glass panes contacting separator 320 and the separator's inner surface. The separator 320 may be a sealed separator, that is, the separator may comprise a spacer and a sealing material (first road seal (primary seal)). A sealed separator may, together with the first seal (eg, hermetically) seal the interior volume enclosed by glass panes 305 and 315 and separator 320 and protect the interior volume from moisture and the like. Once glass panes 305 and 315 are coupled to separator 320 , a second seal may be applied around the perimeter edge of IGU 325 to impart a further seal from the surrounding environment and to impart further structural rigidity to IGU 325 . The second seal can be, for example, a silicone-based sealant. The GU 325 can be wired to a window controller 350 via a wire assembly 330 . Wire assembly 330 includes wires that are electrically coupled to bus bar 310 and may include other wires for sensors or other components of IGU 325 . Insulated wires that may be braided in a wire assembly with an insulating cover over all of the wires such that the multiple wires form a single strand or circuit. In some cases, the wire assembly may include a "pigtail" connector as described herein. IGU 325 may be mounted in frame 327 to create a window assembly 335 . Window assembly 335 is connected to window controller 350 via wire assembly 330 . Window controller 350 may also be connected to one or more sensors in frame 327 using one or more communication lines 345 . During the manufacture of the IGU 325, great care must be taken, for example due to the fact that the glass panes can be brittle and because the wire assembly 330 extends beyond the IGU glass panes and can be damaged. An example of such a case is depicted in FIG. 4 . <br/>4 shows an example of the way in which an IGU comprising an electrochromic pane can be transported during the manufacturing process of an IGU. As shown in FIG. 4, IGUs 402 and 404 can be transported and handled on a transport system 400 with one IGU resting on its edge. For example, transport system 400 may include several rollers so that the IGU can be easily translated along an assembly or test line. Handling an IGU in a vertical fashion (ie, with the IGU resting on its edge) may have the advantage of the IGU having a smaller footprint on a manufacturing floor. Each IGU may include a wire assembly 412 and connectors (eg, pigtail connectors) that provide electrical contact to the bus bars and electrochromic stacks in each IGU. The wire assembly can be about 12 inches long so that the wires do not interfere with the transport system 400, eg, the IGU vertical dimension is about 12 inches or more when the IGU rests on the transport system 400. The wire assembly can also be offset about 3 inches from an edge of the IGU, for example, to ensure that when mounted in a frame the wires do not interfere with blocks or other components securing the IGU in the frame. During transportation on the transportation system 400, although the wire assembly is sized to avoid contact with the transportation system 400, it is still possible for the IGU to catch on other features of a fab or become inadvertently held while the IGU is still moving along the transportation system 400 . When the wire assembly is permanently attached to the IGU as shown in FIGS. 3 and 4, the wire assembly may inadvertently come off the IGU or otherwise be damaged. This may include damaging the wiring within the second seal of the IGU. When this occurs, the entire IGU needs to be replaced. Since the electrochromic mosaic glass of the IGU is usually the most expensive feature, it is too costly to discard the entire IGU due to the external portion of the wiring causing damage to the wiring assembly of the IGU assembly. The embodiments described herein avoid this outcome. 5A is a schematic diagram of an IGU 500 including an electrochromic pane 505 and associated wire assembly 530 . IGU 500 includes an electrochromic pane 505 that includes bus bars 515 in electrical communication with an electrochromic device 517 (see FIG. 2 for an exemplary cross-section). The electrochromic pane 505 mates with another pane (not shown) and is attached to the other pane with a separator 520 (indicated by dashed lines). The area of the electrochromic pane 505 outside the separator 520 is the area of the second seal, and the electrochromic device is located within the perimeter of the separator 520 that forms the first seal against the glass pane of the IGU. seal). In the assembled IGU, the secondary seal area is typically filled with a sealing compound (as described with respect to FIG. 3 ) to form the secondary seal. Wires 522 and 523 are connected to bus bar 515 and extend from bus bar 515 through IGU 500, through spacer 520 or below spacer 520 and within the second seal to a first connection device 525. Wires 522 and 523 may be positioned such that they do not appear in the visible area of the panes. For example, the wires may be enclosed in the sealed separator or the secondary seal as depicted. In some embodiments and as depicted, the first connector 525 can be received substantially within the second seal. For example, the first connector 525 may be surrounded by the second seal on all sides except the face of the first connector 525 with the two gaskets 527 . The first connector can be received within the second seal in substantially different ways. For example, in some embodiments, the first connector can be received substantially within the second seal and recessed relative to the edges of the glass panes. In some embodiments, the first connector 525 can be received substantially within the second seal and protrude beyond the edges of the glass panes. In other embodiments, the first connector 525 itself may form the second seal by, for example, being sandwiched between the panes of glass such that a sealant is placed between itself and the panes of glass. part. As mentioned above, the first connector 525 includes two pads 527 . The two pads are exposed and provide electrical contact to leads 522 and 523 . In this example, the first connector 525 further includes a ferromagnetic element 529 . Wire assembly 530 includes a second connector 535 configured to mate with pad 527 and provide electrical communication with pad 527 . The second connector 535 includes a surface with two pads 540 that provide electrical contact to the wires 545 of the wire assembly. The second connector 535 further includes a ferromagnetic element 550 configured to register and mate with the ferromagnetic element 529 of the first connector. The pad 540 of the second connector 535 is configured or shaped to contact the pad 527 of the first connector 525 mechanically and electrically. Further, at least one of the ferromagnetic element 529 of the first connector 525 or the ferromagnetic element 550 of the second connector 535 can be magnetized respectively. With at least one of the ferromagnetic elements 529 or 550 magnetized, the first connector 525 and the second connector 535 can magnetically engage each other and provide electrical communication between their respective pads. When the two ferromagnetic elements are magnetized, their polarity is reversed so as not to repel each other during registration. A distal end (not shown) of the wire assembly 530 may include terminals that are sometimes provided in a plug or socket and allow the wire assembly to be connected to a window controller. In one embodiment, a distal end of the wire assembly 530 includes, for example, a floating connector as described with respect to FIGS. 6 and 7 . In one embodiment, a pad-to-spring type pin configuration is used for the first connector and the second connector instead of a pad-to-pad contact (527 versus 540 in FIG. 5A ). That is, one connector has a pad electrical connection and the other connector has a corresponding spring-type pin or "pogo pin"; the spring-type pin engages the pad of the other connector to make the electrical connection. In one embodiment, if a ferromagnetic element is also included, the magnetic attraction between the ferromagnetic elements of the first connector and the second connector is strong enough to at least partially compress the spring mechanism of the spring pin to A good electrical connection is made when spliced. In one embodiment, the pads and corresponding spring pins are themselves the ferromagnetic elements. In some embodiments, the first connector 525, the second connector 535, or the terminal or connector at the distal end of the wire assembly (a third connector, for example, a floating connector) may include A memory device and/or an integrated circuit device. The memory device and/or integrated circuit device may store information used to identify and/or control electrochromic pane 505 in IGU 500 . For example, the device may contain a voltage and current algorithm or voltage and current operating instructions for transitioning the electrochromic pane 505 from a colored state to a faded state (or vice versa). The algorithm or the operating instructions may dictate, for example, the size, shape and thickness of the electrochromic pane 505 . As another example, the device may contain information that identifies the shape or size of the electrochromic pane 505 to a window controller so that the electrochromic pane 505 can operate in an efficient manner. As yet another example, the device may contain information specifying a maximum electrical signal and a minimum electrical signal that may be applied to the electrochromic pane 505 by a window controller. Specifying the maximum and minimum electrical signals that can be applied to the electrochromic pane can help prevent damage to the electrochromic pane. <br/> In another example, the memory and/or integrated circuit device may contain cycling data for the electrochromic device to which it is connected. In certain embodiments, the memory and/or integrated circuit device includes part of a control circuit for one or more electrochromic devices of the IGU. In one embodiment, as described above, the memory and/or integrated circuit devices may individually contain components that allow, for example, in communication with a controller and/or programming device during a test or initial programming phase Information and/or logic to identify electrochromic device architecture, glazing size, etc. In one embodiment, the memory and/or integrated circuit devices may collectively comprise at least part of the IGU's controller functionality for enabling an external device to be intended as a control interface for the installed IGU. In a nutshell, in embodiments where the first connector 525 includes the memory device and/or integrated circuit device, since the device is part of the IGU 500, damage to the electrochromic pane is prevented . Storing the maximum and minimum electrical signals that can be applied to the electrochromic pane 505 on a device included in the first connector 525 means that this information will always be associated with the IGU 500 . In one embodiment, a terminal assembly as described herein comprises 5 wires and associated contacts; two of the wires are used to deliver power to the electrodes of an electrochromic device, and the remaining Three wires are used to transmit data to the memory and/or integrated circuit device. The wire assembly 530 depicted in FIG. 5A can be easily attached to and detached from the IGU 500. The wire assembly 530 can also aid in the manufacture and handling of an IGU since the wire assembly 530 is not permanently attached to the IGU and thus will not interfere with any manufacturing process. This can reduce the manufacturing cost of an IGU. Further, as noted above, in some IGUs that include a wire assembly permanently attached to the IGU, it may be necessary to disassemble the IGU for reconnection if the wire assembly becomes damaged and/or becomes detached from the IGU. The wire assembly may require replacement of the IGU. Using a detachable wire assembly, an IGU can be installed and then attached, thereby precluding any damage to the wire assembly. If a wire assembly is damaged it can also be easily replaced since it is modular. In addition, the detachable wire assembly allows the wire assembly to be replaced or upgraded during the installed life of the associated IGU. For example, if the wire assembly includes a memory chip and/or a controller chip that needs to be retired or replaced, the assembly with a new chip can be installed without touching the physical structure of its associated IGU. into a new version. Further, different buildings may employ different controllers and/or connectors that each require their own special wire assembly connectors (e.g., each of them may have a different mechanical connector design, electrical requirements, logical properties, etc.). Furthermore, if a wire assembly becomes worn or damaged during the installed life of the IGU, the wire assembly can be replaced without replacing the entire IGU. Another advantage of a detachable wire assembly is shown in <br/>5B. Figure 5B is a schematic diagram of an IGU 500 on a transport system 400 and an associated wire assembly. The IGU 500 includes an electrochromic pane and a connector. As mentioned above, the transport system 400 can include several rollers so that the IGU 500 can be easily moved. Portions of the transport system 400 shown in FIG. 5B may reside, for example, in a test area of the fabrication floor after fabrication of the IGU. Since the IGU 500 including a connector and the wire assembly 530 having a connector can be magnetically coupled to each other as described in FIG. 5A , the IGU 500 can be easily tested. For example, testing of the IGU can be performed automatically by lowering a wire assembly 530 including a connector (which includes a ferromagnetic element) onto an edge of the IGU. The connector of the wire assembly may connect to the connector of the IGU such that less or no physical alignment is required (eg, due to the arrangement of one or more ferromagnetic elements in the mating connector). For example, the test connector ends can simply be hung near the IGU; registration and connection between the connectors is accomplished by magnetic attraction and alignment such that they automatically "snap" into place. The IGU can then be tested by, for example, a test controller coupled to the other end of the lead assembly 530 . Testing can include, for example, activating the electrochromic pane and evaluating the electrochromic pane for possible defects. The wire assembly can then be removed from the IGU with a force sufficient to overcome the magnetic attraction between the two connectors. In certain embodiments, the external connectors may require suitable flexible support to prevent the wiring to the external connectors from experiencing stresses that would pull the connectors apart. The wire assembly is then ready for splicing to the next IGU moving down the production line. In some embodiments, each of the first connector and the second connector includes at least two ferromagnetic elements. In a particular embodiment, each of the first connector and the second connector includes two ferromagnetic elements. A "dual" magnetic contact allows for a more secure connection. including (for example) Nd ₂Fe ₁₄Magnets of B, such as those based on neodymium, are well suited for this purpose due to their relatively strong isomagnetic field compared to their isomagnitude. As mentioned above, the two ferromagnetic elements may or may not be part of the electrical pads. In one embodiment, the two ferromagnetic elements in each of the first connector and the second connector are themselves magnets, wherein when registered to the first connector and the second connector the most The opposite poles of the magnets of each of the adjacent connectors cause the respective magnets in each of the first connector and the second connector to attract each other. 5C depicts a first connector (the IGU and wiring to the first connector not shown) 525a with two magnets 560, one exposing the positive pole and one exposing the negative pole. The surface of electrical contact 527a is also depicted. A second connector 535a has corresponding magnets in which the poles facing the exposed poles of the magnet 560 are reversed to attract the magnet 560 . The second connector also has wires 545 that lead to a power source such as a controller (electrical pads on connector 535a are not depicted). Using this connector configuration assumes that the electrical connections (in this example the pads) will be properly aligned due to the attraction of the magnet poles only when opposite poles are close to each other. In an embodiment, such a configuration is used in which the pad-to-pad or pad-to-spring pin electrical connections are so magnetized and the magnetic poles are so configured. When installing an IGU in some frame systems, such as a window unit or curtain wall where multiple IGUs are to be mounted close together, it is preferable to have flexibility in making the electrical connections to each IGU. This is true because usually the electrochromic mosaic glass of the IGUs is always placed outside the installation facing the external environment of the installation. Given this configuration, having the connectors in the same position within the second seal of the installed IGU would require more wiring to the controller. However, for example, if the electrical connectors in the IGUs (as described herein) can be positioned closer to each other, less wiring is required from the IGU to the frame system in which the IGUs are mounted. Thus, in some embodiments, the IGU 500 may include more than one first connector 525, ie, connectors that are redundantly installed. For example, referring to FIG. 5D , an IGU 590 may include not only a first connector 525 at the upper right side of the IGU, but also (as indicated by the dashed feature) the lower left or right or upper left side or Another connector on top or bottom. In this example, the connectors are all within the second seal. The exact location on each edge is not critical; the key is to have more than one connector feeding the same electrochromic device so that there is flexibility in attaching external connectors to the IGU when the IGU is installed. When the IGU 590 is installed in a holder similar to (for example) an IGU When in a frame of 2, 4, 6 or more IGUs of the 590, due to the flexibility of having multiple redundant first connectors that can be coupled to the second connector, each IGU The inclusion of multiple first connectors in 590 will allow for easier routing of the wires in the frame (eg, wires 545 associated with each wire assembly 530 in FIG. 5A ). In one embodiment, the IGU has two first connectors, in another embodiment three first connectors, and in yet another embodiment four first connectors. In some embodiments, there may be five or six first connectors. Although the number of connectors can affect production costs, this factor can be compensated by higher installation flexibility (for example, in expensive and complex curtain wall installations where the volume to accommodate wiring is usually limited) and during manufacture. It is relatively easy to install multiple first connectors. In some embodiments, the IGU (e.g. 500 or 590) may contain two electrochromic panes. In these embodiments, the first connector may include four pads (or corresponding pad-to-pin contacts) to provide contacts to the bus bars of each of the electrochromic panes (i.e. , each electrochromic pane will contain at least two bus bars). Additional pads for controlling and communicating with the electrochromic device and/or the on-board controller may also be included, such as four pads for bus bar wiring and three additional pads for communication purposes. Onboard controllers are described in U.S. Patent No. 8,213,074 entitled "Onboard Controller for Multistate Windows" (e.g., where the controller assembly is integrated within the second seal of the IGU), which is incorporated by reference in its entirety. into this article. Likewise, the second connector 535 will include four pads to provide electrical contact to the wires of the wire assembly. In other embodiments, each electrochromic pane may have its own first connector or two or more redundant first connectors. The title of the application dated August 05, 2010 is "MULTI-PANE ELECTROCHROMIC Further description of an IGU comprising two or more electrochromic panes is given in U.S. Patent Application No. 12/851,514 (now U.S. Patent No. 8,270,059) of WINDOWS, which is incorporated by reference in its entirety. Incorporated into this article. Some embodiments include connectors that are external to the IGU and provide electrical communication from a frame structure to the IGU (directly wired to the IGU or wired as described above to a first connector assembly and a second connector assembly). Figure 6 shows an example of a schematic diagram of a window assembly 600 comprising an IGU 610 comprising an electrochromic pane. The IGU 610 resides in a frame 605 . A connector 620 is wired to the IGU 610 and attached as mounted to a frame 605 ; at least part of the connector 620 (the nose, as described below) passes through an aperture in the frame 605 . 6 includes a schematic top view of the window assembly 600 (upper left side, viewing the window assembly 600 from a main surface, but omitting some aspects to show the internal details of the assembly) and a cross-section (lower left side) B. The cross section B is indicated by the section line B on the plan view. Dashed line 607 indicates the leading edge of frame 605 (behind the IGU as drawn); the portion of IGU 610 within dashed line 607 corresponds to the viewable area of IGU 610 that will be seen when the frame is assembled (i.e., will act as a window) region). The inlaid glass block 615 between the IGU 610 and the frame 605 is used to support the IGU 610 inside the frame 605 . The inlaid glass block 615 may conform to the consideration frame 605 and the IGU The difference in thermal expansion coefficient between 610. For example, the inlaid glass blocks 615 can be a foam material or a polymer material. Framing material 625 holds IGU 610 against frame 605 . Note that the framing material 625 is not shown in the schematic top view of the window assembly 600 . Note also that IGU 610 may contact frame 605 and framing material 625 on each side as shown, but there may be some sealant between the glass and the framing material. The cross-section shows that this IGU contains two panes of glass separated by a spacer. <br/>GU 610 includes a wire assembly 617 that includes two bus bars (not shown) that are electrically coupled to an electrochromic device (not shown) on the electrochromic pane of the IGU. ) of at least two conductors. Note that the wire assembly 617 is not shown in the cross-section of the window assembly 600 . The wires of the wire assembly 617 terminate at a floating connector 620 at one distal end of the wire assembly. Floating connector 620 includes two female receptacles electrically coupled to the wires. Further details on an embodiment of a floating connector are given below in relation to FIG. 7 . The fixed connector 630 including one of two male pins can be inserted into the floating connector 620 . The fixed connector may be secured to, for example, a frame or building in which window assembly 600 is installed. Since the fixed connector 630 is electrically coupled to a window controller, the optical state of the electrochromic device of the IGU 610 can be changed. Although the floating connector 620 and the fixed connector 630 shown in FIG. 6 are pin/socket type connectors, other types of connectors may be used. For example, in some embodiments, one face of the nose of the floating connector may be flat and include a magnetic pad present on the face of the floating connector. Wires of wire assembly 617 may be coupled to these magnetic pads. Fixed connector 630 may also include magnetic pads configured or shaped to mechanically and electrically contact the pads of the floating connector. Alternatively, floating connector 620 and fixed connector 630 may be similar to the connectors described above with respect to Figure 5A. The motion connector 620 may be attached to the frame 605 with screws, nails or other means or may be a press fit without additional fastening components. One nose of the floating connector may be flush with the outer edge of the frame 605 . The nose of the floating connector can be circular, rectangular or other shapes. Although the wire assembly 617 is shown directly connected to the floating connector 620, other mechanisms may be used to connect the wire assembly 617 to the floating connector 620. For example, in some embodiments, wire assembly 617 may be connected to floating connector 620 with a connector similar to that described above with respect to FIG. 5A . <br/>In a word, similar to the connector and wire assembly described in Figure 5A, the floating connector 620, the fixed connector 630 or the wire assembly (the fixed connector 630 is a part of the wire assembly) The distal end may include a memory device and/or an integrated circuit device. As noted above, the device may store information used to identify and/or control the electrochromic panes in IGU 610 . <br/>In some embodiments, IGU 610 may include two electrochromic panes. In this embodiment, the floating connector may include four female receptacles electrically coupled to the bus bars of each of the electrochromic panes (i.e., each electrochromic pane will include at least two bus bar). Likewise, fixed connector 630 will contain four male pins to be inserted into the floating connector. 7 shows and has an example of a schematic diagram of a window unit 700 of an IGU comprising an electrochromic pane. The window unit 700 includes a frame 710 in which a fixed frame 707 and a movable frame 705 are installed. The fixed frame 707 may be fixedly mounted in the frame 710 such that the fixed frame 707 does not move. The movable frame 705 is movably mounted in the frame 710 such that the movable frame 705 can move, for example, from a closed position to an open position. In the window industry, the window unit may be referred to as a single hung window, the fixed frame may be referred to as a fixed sash, and the movable frame may be referred to as a movable sash. The movable frame 705 may include an IGU (not shown) that includes an electrochromic pane (not shown), wherein the electrochromic pane is connected to a window controller. Although FIG. 7 shows a window unit comprising a movable frame with connectors for connecting an electrochromic pane of a movable frame to a window controller, the connectors can also be combined with two movable frames. Mobile frames are used together with one of the window units. Also, those of ordinary skill will appreciate that the above-described embodiments with one or two movable frames may include horizontally sliding windows. When the movable frame 705 is in an open position, the floating connector 715 fastened to the movable frame 705 may not contact the fixed connector 720 fastened to the frame 710. Thus, the electrochromic panes of an IGU mounted in the movable frame 705 may not be able to be controlled by a window controller when the movable frame 705 is tied in an open position. However, when the movable frame 705 is tied in a closed position, the floating connector 715 contacts the fixed connector 720 . The mating of the floating connector 715 with the fixed connector 720 provides electrical communication and thus allows actuation of the electrochromic pane of the IGU in the movable frame 705 . For example, the fixed connector can be coupled to a window controller, wherein the window controller is configured to transition the electrochromic pane of the IGU between a first optical state and a second optical state. Moving connector 715 and fixed connector 720 are an example of a pair of connectors used to electrically couple an electrochromic pane to a window controller. Several other pairs of connectors are possible. The floating connector 715 has a flange 716 and a nose 717 extending from the flange. The nose 717 may have a length approximately equal to a thickness of the movable frame 705 . Nose 717 includes an end face 718 that includes two exposed female contacts 719 . The floating connector 715 can be secured to the movable frame 705 through mounting holes 721 in the flange 716 using screws, nails or other attachment means and/or press fit (ie, secured by press fit only). Because the female contacts 719 of the floating connector 715 can have opposite polarities, both the floating connector 715 and the fixed connector 720 can have offset mounting holes and/or be shaped or configured so that they can only be used in one direction. Directional mounting, for example with an asymmetric element and/or a registration notch or pin associated with the shape of the connector. That is, for example, one mounting hole 721 in flange 716 may be positioned closer to nose 717 than the other mounting hole 721 . By arranging the mounting holes in this offset manner, the exposed contacts can be arranged in a defined orientation when the floating connector 715 is fastened to the movable frame 705 . For example, the movable frame 705 may include holes drilled or formed in the movable frame 705 when the movable frame is manufactured. When the IGU is installed in the movable frame, floating connector 715 may be installed in movable frame 705 such that offset holes 721 in flange 716 are configured to match holes pre-formed in movable frame 705 . This offset configuration of the mounting elements prevents the IGU from being improperly connected to a window controller from damaging the IGU's electrochromic pane. <br/>Use another mechanism instead of screws or nails or in addition to screws or nails to fasten the floating connector 715 to the movable frame 705. For example, in some implementations, the nose 717 of the floating connector 715 may further include a protrusion. These protrusions can engage the movable frame 705 and hold the nose 717 of the floating connector 715 as it passes through a hole or aperture in the movable frame to expose the end face 718 of the nose 717 . In some embodiments, the protrusion from nose 717 is not crushable. When the nose 717 is passed through the hole during installation, the non-squeezable protrusions can engage and deform the interior of the hole or aperture in the movable frame 705 (e.g., the nose portion is inserted into the hole and then closed with a Tap a rubber mallet into the remainder of the nose). The non-squeezable protrusions can retain the floating connector 715 in the movable frame 705 as they engage and deform the bore interior. In one example, the protrusions are barbs or similar "one-way" protrusions configured to retain the nose in the aperture when the nose is inserted into the aperture. In another example, the protrusions allow the nose to be removed with a certain amount of force that will not damage the connector, although the protrusions are non-squeezable and configured to hold the nose in the aperture. department. In other embodiments, the protrusion from the nose 717 is squeezable. When the nose 717 is inserted into a hole in the movable frame 705, the compressible protrusions compressively engage the hole in the movable frame 705 or the interior of an aperture. When the squeezable protrusions engage the aperture, they can retain the floating connector 715 in the movable frame 705 . The fixed connector 720 includes two male contacts 725 . When the movable frame 705 is tied in a closed position, the male contact 725 of the fixed connector 720 contacts the two female contacts 719 of the floating connector 715 . This allows electrical communication with the electrochromic pane in the movable frame 705 . A spring 727 and other mechanical means are used to extend the male contact 725 from the raised surface 726 of the fixed connector 720 . A spring 727 or other mechanical device also allows the male contact 725 to retract back into the raised surface 726 of the fixed connector 720 when a force is applied to the male contact 725 . A spring 727 in the fixed connector 720 can assist in protecting the male contact 725 during use of the window unit 700 . For example, in some cases, without the spring 727, the male contact 725 may be exposed and damaged by a user opening and closing the window. Male contact 725 is a spring pin electrical contact. In some embodiments, the end face 718 of the floating connector 715 may include a circumferential outer edge in which the exposed concave contacts 719 appear and an inner recessed region. The circumferential outer edge may have a slope directed inwardly towards the inner recessed area. The inwardly directed slope of the peripheral edge facilitates mating the raised surface 726 of the fixed connector 720 with the end face 718 of the floating connector 715 . The raised surface 726 may assist in guiding the male contact 725 of the fixed connector 720 for registration to the female contact 719 of the floating connector 715 . Similar to the floating connector 715, the fixed connector 720 can be fastened to the frame 710 through the mounting hole 728 in the fixed connector 720 using screws, nails or other attachment means. The fixed connector 720 may also have offset mounting holes. That is, for example, one of the mounting holes 728 in the fixed connector 720 may be positioned closer to the raised surface 726 than the other mounting hole 728 . Due to the arrangement of the mounting holes in this offset manner, the male contacts 725 can be arranged in a defined orientation when the fixed connector 720 is fastened to the frame 710 . For example, frame 710 may include holes drilled or formed in frame 710 when the frame is manufactured. An installer of fixed connector 720 in frame 710 may install the fixed connector to the frame such that offset holes 728 are configured to match holes formed in the frame. This prevents the IGU from being improperly connected to a window controller which could damage the IGU's electrochromic pane. In this example, the mounting hole 728 in the fixed connector 720 also allows the fixed connector 720 to be moved, that is, the fixed connector 720 is fastened to the frame 710 movably. For example, each of the mounting holes 728 includes an open volume around a screw passing therethrough. This open volume can be a slit that allows the fixed connector 720 to translate normal to the movement of the movable frame 705 (in the plane of the page as drawn) to move toward a closed position when the movable frame 705 moves and Floating connector 715 is thereby aligned when connectors 715 and 720 "dock" against each other. The slots are sized such that the heads of the attachment screws cannot pass through the slots, so the fixed connector 720 is "slidably" attached to the frame 710 . The fixed frame 707 of the household unit 700 may also include an IGU (not shown) that includes an electrochromic pane (not shown). Connectors such as connectors 715 and 720 described above may be used to connect the electrochromic pane of fixed frame 707 to a window controller. However, it is not necessarily necessary to use a fixed connector with springs 727 or other mechanical devices that can protect the male contacts 725 in the connector used for the fixed frame 707, because the fixed frame 707 can remain fixed and not self-contained. The open position moves to a closed position. <br/>In some embodiments of a fixed connector and a floating connector mounted on a movable frame in a frame, springs or other mechanisms are not used to raise the male connector 725 from the fixed connector 720 Surface 726 extends. Instead, the male contact 725 of the fixed connector 720 is coupled to the female contact 719 of the floating connector 715 using, for example, a magnetic force. The magnetic force may be provided by either or both of the female contact 719 in the floating connector 715 and/or the male connector 725 in the fixed connector 720 including, for example, a magnetic element. For example, the magnetic elements can be neodymium magnets. When the floating connector 715 and the fixed connector 720 are in close proximity to each other, a magnetic force between the male connector 725 and the female contact 719 causes the male connector 725 to extend from the raised surface 726 and couple to the floating connector 715 The concave contact piece 719 in it. When the fixed connector 720 and the floating connector 715 are separated by a distance from each other, a mechanical device can impart a force on the male contact 725 that retracts the male contact 725 back into the fixed connector 720 (eg , when the magnetic force is sufficiently weakened due to the separation of the fixed connector 720 and the floating connector 715, the male contact 725 retracts back into the fixed connector 720). Note that, as presently described, when the movable frame 705 of the window unit 700 is closed, electrical contact is made via the contacts as described. In one embodiment, the movable frame containing the IGU and the frame in which the movable frame resides has a wireless power generator and receiver. In this way, the electrochromic pane can be transformed even if the movable frame is tied in an open position. It is convenient to have the wireless power generator in the frame and the receiver in a movable frame containing the IGU and electrochromic pane, but embodiments are not so limited. Wirelessly powered electrochromic windows are described in US Patent Application Serial No. 12/971,576, entitled "Wireless Powered Electrochromic Window," filed December 17, 2010, which is hereby incorporated by reference in its entirety. In one embodiment, the frame contains a radio frequency (RF) generator for transmitting wireless power and the movable frame contains a receiver for converting the wirelessly transmitted energy into electrical energy to power the electrochromic pane. device. In another embodiment, one or more wireless power generators are located remotely from the electrochromic pane while the receiver is tethered in the movable frame. In other embodiments, magnetic induction is used to generate wireless power to the electrochromic pane. In other embodiments, continuous electrical contact is made between a frame and a movable frame mounted in the frame via a connector with sliding contacts. FIG. 8 includes a schematic diagram of a window unit 800 including IGUs each including an electrochromic pane. FIG. 8 contains a front view and a partial cross-section of the window unit 800 . The cross-section C (lower part of FIG. 8 ) is indicated by line C on the front view in the upper left part of FIG. 8 . The subscriber unit 800 includes a frame 810 in which a first movable frame 805 and a second movable frame 807 are mounted. The first movable frame 805 and the second movable frame 807 are movably mounted in the frame 810 such that they can both move up and down in the frame 810 . In the window industry, window unit 800 may be referred to as a double hung window and movable frames 805 and 807 may be referred to as movable sash. The first movable frame 805 includes an IGU 815 that includes an electrochromic pane (not shown). The second movable frame 807 includes an IGU 817 that includes an electrochromic pane (not shown). <br/>To provide electrical connection to the electrochromic panes in each of the IGUs 815 and 817, the frame 810 includes rails (e.g., two rails for each of the movable frames 805 and 807 and for the feedthrough Additional tracks on the electrical circuit (if included in the IGU) that are electrically coupled to a window controller when the window frames are installed in the frame 810. In this example, each of IGUs 815 and 817 includes a floating connector that electrically connects the bus bars (not shown) of the electrochromic panes to connector pins 835 mounted in movable frames 805 and 807, respectively. 825. When the movable frames 805 and 807 are installed in the frame 810 , a spring 830 or other mechanism may be associated with the connector pin 835 to force the connector pin 835 into contact with the track 820 . Note that track 820 need not (and in this example does not) traverse the entire height of frame 810 . This is due to the positioning of connectors 825 mounted in movable frames 805 and 807 . With this placement, the electrical connection between pin 835 and track 820 is maintained throughout the entire slidable range of the movable frames. In some embodiments, track 820 traverses the entire height of frame 810 depending on the positioning of connector 825 in each of the movable frames 805 and 807 . <br>In some embodiments, the track 820 can be a metal. In other embodiments, track 820 may be carbon or other conductive material, such as carbon brushes or woven carbon fibers (eg, in the form of a compressible tube). In some embodiments, the connector pin 835 can be a metal or carbon. Connector pins 835 may also be in the form of brushes. In some embodiments, the interface between track 820 and connector pin 835 may serve as a weather seal. Further, movement of the movable frame 805 within the frame 810 can be used to clean the surfaces where the rails 820 contact the connector pins 835 so that electrical contact can be maintained. Other configurations of channels 820 and connector pins 835 are possible. For example, the rails may be positioned where one of the movable frames contacts frame 810 at 837 . Pin 835 or other conductive surface may be configured to contact track 820 located at 837 . However, Figure 8 shows a window unit comprising two movable frames with connectors for connecting the electrochromic panes of the movable frames to a window controller , but the connectors can also be used with a window unit comprising a movable frame or with horizontally sliding windows. <br/>In some embodiments of IGU 815 or 817, the IGU may include two electrochromic panes. In this embodiment, to provide electrical connection to the electrochromic panes in each of IGUs 815 and 817, frame 810 may include tracks (e.g., four tracks for each of movable frames 805 and 807, Because each electrochromic pane will contain at least two bus bars). Tracks in the frame can be electrically coupled to a window controller. In one embodiment, the four rails for each movable frame are configured as two pairs, each pair tied on opposite sides of the movable frame to avoid the Contact is made by any action that resides in the frame of the movable frame. In another embodiment, the four (or more) rails associated with each IGU are on the same side of the movable frame, substantially parallel but sufficiently separated to avoid contact with the floating connection of another rail device contacts. Another way to maintain continuous electrical communication between a movable frame mounted in a frame is by direct wiring. Embodiments described herein use flexible connections, such as ribbon cables, to make electrical connections. 9A shows a schematic diagram of an IGU 900 including an electrochromic pane 505 and an associated ribbon cable 905 . The IGU 900 includes an electrochromic pane 505 having bus bars 515 in electrical communication with an electrochromic device 517 (see FIG. 2 for an exemplary cross-section). The electrochromic pane 505 mates with another pane (not shown) and is attached to the other pane with a separator 520 (indicated by dashed lines). The outside of the separating member 520 is the second sealing area. Wires 522 and 523 are connected to bus bar 515 and extend through IGU 900 to a connector 902 . The connector 902 is connectable to a ribbon cable 905 . The ribbon cable 905 can be connected to a window controller 910 . In some embodiments, the ribbon cable may be a cable having a number of conductors running parallel to each other in the same plane. The ends of the ribbon cable may include connectors for connecting to a connector 902 and window controller 910 . In some embodiments, connector 902 may be similar to connector 525 (i.e., connector 902 may include one or more ferromagnetic elements) and ribbon cable 905 may also include a One or more ferromagnetic elements of the shaped cable 905. Other mechanisms for engaging connector 902 and ribbon cable 905 may also be used. In some embodiments, the connector 902 may include a memory device and/or an integrated circuit device. Ribbon cable 905 may include more wires or conductive paths than two paths required to electrically connect to bus bar 515 of electrochromic pane 505 so that window controller may communicate with the memory device and/or the product. The body circuit device is connected. In some embodiments, the ribbon cable may have conductive paths for controlling more than one electrochromic pane, as described above. Ribbon cables have the advantage of having the ability to include multiple parallel conductors for carrying power, communication signals, etc. in a thin flexible form. <br/>In some embodiments, IGU 900 includes two or more electrochromic panes. Connector 902 may be capable of providing electrical contact to the bus bars of each of the electrochromic panes (ie, each electrochromic pane will contain at least two bus bars). Thus, in the example of an IGU with two electrochromic panes, the ribbon cable may comprise four wires running parallel to each other on the same plane to power the electrochromic panes. <br>As mentioned above, in some embodiments, an IGU may contain more than one connector. In an embodiment, a second connector or further connectors are redundant and have the same function as the first connector, such as for the IGU by providing more flexibility in wiring configuration to the IGU. Facilitate the installation of this IGU. In other embodiments, the second or further connectors are used to connect the IGU to other IGUs in series or in parallel. In one example, the IGUs are linked via connectors and wiring assemblies to operate independently, eg, under command of a single connector. The controller may also include the ability to control the physical movement of one or more of the IGUs via a movement mechanism. The movement mechanism may include, for example, components for opening or closing a window comprising an IGU and/or components for positioning a folding assembly comprising two or more IGUs to a window and/or door. An illustration of this is depicted in FIG. 9B , which shows a system comprising a plurality of IGUs, in this case four IGUs 900 a - 900 d incorporated into a folding door system 903 . In this example, system 903 includes four gates each containing an IGU 900a-90Od, respectively. The system may include more or fewer doors and/or IGUs, and may include windows as well as doors. The IGUs of system 903 are each independently controlled by a controller 910, for example IGU 900b indicated in Figure 9B is in a colored state and IGUs 900a, 900c, and 900d transition to a faded state. <br/>The system 903 can be used, for example, as an optional divider in a large conference room when it is divided into two smaller conference rooms. As indicated in the top view (FIG. 9B, lower schematic), the door containing the IGUs 900a-900d is hinged to fold in an accordion fashion and also translates (as indicated by the thick dashed arrows) into, for example, a wall. into a recess for storage. In this example, the controller 910 not only controls the independent transitions of the IGUs 900a-900d, but also controls the folding/unfolding of the doors and translation of the doors into the storage position. The mechanisms for folding and translating the doors are not depicted in Figure 9B, however, those of ordinary skill will appreciate that such mechanisms are commercially available and well known. These mechanisms may include components that need to be powered through one or more of the doors, and therefore electrical communication in these instances may be through wiring assembly 905 and thus through IGUs 900a-900d, but this is not required. In some embodiments, a controller not only controls the transition of an electrochromic device (ie, an electrochromic device associated with an IGU), but independently controls the movement of an associated one of the IGUs via a movement mechanism. Controller 910 may accept input manually and/or wirelessly as depicted. Controller 910 is in electrical communication with each of IGUs 900 a - 900 d via ribbon cable assembly 905 . In this example, each of IGUs 900a-900d has two connectors, eg, IGU 900d is connected to both controller 910 and IGU 900c via ribbon cable 905 and corresponding connectors in IGU 900d. In turn, each of IGUs 900b and 900c also contains two connectors to which ribbon cable 905 connects to continue the chain of electrical communication. The IGU 900a has at least one connector to electrically connect to the IGU 900b via a ribbon cable 905 . The IGU 900a may also have additional connectors (for example, it is convenient if the IGU 900a is produced in the same way as the IGUs 900b to 900d), but this is optional since the IGU 900a only needs to have an associated connector in this example. Link the connector. <br/>In this example, independent control of the electrochromic panes in the IGUs 900a-900d is accomplished by connecting the IGUs 900a to 900d in series to the window controller. Each of the ribbon cables 905 has the appropriate number of wires and associated contacts to provide electrical communication, and is thus independently controlled by the controller 910 . Depending on the IGU to be controlled, the window controller specifications, the manner in which the IGUs are coupled and optionally the sensors and any associated movement mechanisms that must also be controlled through the IGUs via electrical communication lines, the ribbon A cable may contain any number of different conductors. In some embodiments, the ribbon cable may contain 4, 8, 18, 24 or even more conductors. For example, if multiple IGUs are coupled in series with each other and there are no sensors associated with the IGUs, the ribbon cable may include two wires. As another example, if two IGUs are coupled to each other and the two IGUs are directly coupled to a window controller, the ribbon cable may include four wires. <br/>9C shows an example of a window unit 915 incorporating an IGU 900 that includes an electrochromic pane. The window unit 915 includes a frame 920 in which is mounted a movable frame 925 holding an IGU 900 . For example, movable frame 925 is movably mounted in frame 920 such that it can rotate along a rotational axis 917 from a closed position to an open position. In the window industry, window unit 915 may be referred to as a vertical hinged window and movable frame 925 may be referred to as a hinged sash. The movable frame 925 may contain an IGU 900 that includes an electrochromic pane (not shown), wherein the electrochromic pane is connected by ribbon cable 905 to a window controller. Ribbon cable 905 may allow movable frame 925 to rotate relative to frame 920 . A controller controls not only the optical transitions of the IGU 900, but also the movement mechanism and associated intermediate positioning for opening and closing the window, as required. The cable 905 may include two male connectors 907 and 909 for coupling the IGU 900 in the movable frame 925 to a window controller (coupled to the frame 920). However, many different types of connectors can be used with the ribbon cable. For example, in some other embodiments, the ribbon cable may include a male connector and a female connector, two female connectors, and/or include one or more ferromagnetic elements as described herein Connector. In some embodiments, the ribbon cable can be a commercially available ribbon cable, and in some embodiments, the ribbon cable can be a specially manufactured ribbon cable with specific connectors cable. The ribbon cable may contain any number of different wires depending on the IGU 900 and the window controller. For example, the ribbon cable may contain as many as 4, 8, 18, 24 or even more conductors. Two wires can be used to connect a window controller to the bus bars of an electrochromic pane, and further wires can be used to connect the window controller to sensors associated with the IGU 900, for example. Figure 9C depicts a fairly simple window movement mechanism (ie, rotates on an axis to open or close). There are more complex movement mechanisms of the wiring assemblies that the controllers described herein can control and for which more complex configurations are possible. These mechanisms are described further below. 9D shows a schematic diagram of a window unit 930 with an IGU 900 including an electrochromic pane (not specifically depicted). The window unit 930 includes a frame 932 in which a movable frame 935 is installed. For example, movable frame 935 is movably mounted in frame 932 such that it can be rotated and translated from a closed position to an open position via a movement mechanism 937 . Mechanism 937 may include multiple arms that allow for this rotation and translation. In this example, the movement mechanism 937 is a manually operated mechanism, but in other embodiments the mechanism is electrically driven and the movement mechanism 937 is also controlled by a controller that controls the transition of the IGU 900 as needed. The electrochromic pane of the IGU 900 is in electrical communication via ribbon cable 940 with a window controller. <br/>The configuration of the ribbon cable 940, which allows the movable frame 935 to rotate and translate relative to the frame 932 without becoming entangled in the mechanism 937 and while also being aesthetically pleasing (i.e., its use by the mechanism 937 or at least partially hidden). Similar to ribbon cable 905, ribbon cable 940 may include two connectors for coupling the electrochromic pane of IGU 900 in movable frame 935 to a window controller via, for example, wiring through frame 932 941 and 943. Again, many different types of connectors can be used with the ribbon cable. In some embodiments, ribbon cable 940 may be partially or fully attached to one or several arms of mechanism 937 . Ribbon cable 940 may be attached to an arm of movement mechanism 937 with an adhesive 945, for example. However, other ways of attaching the ribbon cable to a component of mechanism 937 are possible including, for example, brackets, clips, and Velcro. As shown, ribbon cable 940 may include one or more folds such that it conforms to the configuration of receiving mechanism 937 . For example, ribbon cable 940 may contain one or more folds as shown in the far right of Figure 9D. Ribbon cables are well suited for these applications because they are relatively flat and can be folded without damaging the wires within the ribbon. <br/>In certain embodiments, a ribbon cable similar to the ribbon cable 905 or 940 is used for a window or door unit that includes a movable frame that translates, commonly referred to in the window and door industry as a " Slider". The slider unit may include a fixed frame in which a movable frame is installed and slides in the fixed frame. The movable frame can include an IGU including an electrochromic pane. The movable frame is movably mounted in the frame so that it can translate, generally but not necessarily a horizontal translation (for example, a "double-hung" window can also be considered a slide in this context, so a vertical translation). A ribbon cable allows the movable frame to translate relative to the fixed frame while maintaining electrical communication between a controller in the movable door or window and the optical device. <br/>9E depicts a schematic diagram of an embodiment including a sliding door assembly 950. An assembly 950 includes a fixed door 900f and a movable door 900m. The door 900m slidably engages a rail 955 (eg, a rail in which a sliding contact piece connected to the door 900m can move within the rail 955). The guide rail 955 includes a slot 960 that allows a portion of the ribbon cable to pass unimpeded during the translation of the door 900m (the ribbon cable and connector assembly is only shown in the bottom (detail) portion of Figure 9E for clarity shown in ). In this rendering, the front side of rail 955 is depicted removed to reveal slit 960 . In this example, door 900m may travel parallel to door 900f as indicated by the long dashed arrows above doors 900f and 900m. In other embodiments, as indicated by the small dashed arrow near the lower left corner of the door 900m in the upper portion of FIG. One of the gates travels in a plane. For example, like doors common in Europe, the slider can also translate "inwards" and "outwards" perpendicular to a path parallel to the fixed door (or wall), so that when the slider is closed the two doors are essentially In the same plane and when the slide is open the two doors are parallel and adjacent. In this "inward" and "outward" movement, the 900m face of the door may be parallel to the fixed door (or parallel to the wall if there is only one door), or it may be at an angle where one end of the door (eg top or bottom end) is translated inwardly or outwardly, but the other end remains essentially in the same position, thus "tilting" the door is expected. In such embodiments, the guide rail 955 may also have an additional slot (not depicted, e.g., where depicted open to reveal the (front) side of the slot 960 and part of the base and top) to allow the ribbon cable 952 to escape The guide rail and travels outwardly with the door. In one embodiment, there is also a mechanism to ensure that the door can only be tilted back along substantially the same path so that the cable must be threaded back into the additional slot to be repositioned within slot 960 . The bottom portion of 9E shows further detail of the ribbon cable 952 including a portion passing through the slot 960. The majority of the ribbon cable 952 resides inside the rail 955, which can be, for example, a rectangular channel with a slit 960 at the base and running the length of the channel. Near the end portion of the ribbon cable connected to the slider 900 m, a fold is made in the cable 952 so that the flat portion of the cable can translate parallel to the slit 960 (as indicated by the dotted arrow) and when the door is translated 900 m Translate through the slit 960 at the time. A connector 965 (eg, a pin connector as described herein (eg, a 5-pin connector)) at this end of the ribbon cable 952 engages a receptacle 970 to deliver power to the EC device in the door 900m and Connected to EC unit in door 900m. Appropriate clips, clamps, etc. may be used to ensure that the fold in the cable 952 is retained and that the portion of the cable 952 that traverses the slot 960 (from the inside to the outside of the rail 955 and in this case below the rail 955) does not rub against the slot. Sew the edge of 960. The rail 955 may support the weight of the door 900m via a sliding contact or other mechanism; there may be a mechanism (not shown) below the door 900m such as rollers, or both. Door 900m may be actuated by an electric drive that may also be part of window control system 910 . In one embodiment, the face of the ribbon cable 952 is configured substantially horizontally inside the rail 955 . In another embodiment, the face of the ribbon cable 952 is configured substantially vertically inside the rail 955 . It has been found that the cable 952, by its inherently curved and flexible nature, remains inside the body of the rail 955 and does not pass through the slot 960 when oriented vertically (i.e. the bottom edge of the majority of the cable 952 is 900m from the door 900m. rests on the base of the rail 955 during translation) and does not pass through the slot 960, because the curved nature of the cable ensures that its bottom edge only crosses the slot 960, which is not aligned parallel to the slot and therefore cannot fall through. Through the slit 960. Thus, the portion of cable 952 that passes through slot 960 to engage connector 965 is the only portion that passes through slot 960 . For this reason and the relatively light and stable construction of the ribbon cable, the use of the slider mechanism results in little, if any, wear. <br/>In one embodiment, the ribbon cable exits the rail through one of the ends of the rail. For example, as depicted in FIG. 9E , the ribbon cable 952 exits the rail 955 at the distal end of the door 900m , is suitably configured in the wall and connects to the controller 910 . The other end of ribbon cable 952 supports a connector (similar to connector 965 if different) to connect to controller 910 . <br/>The embodiment is a ribbon cable connection system for a sliding door or window, the ribbon cable connection system includes a rail configured to accommodate a ribbon cable, the ribbon cable A first portion exits the guide rail through a slit in the guide rail; the first portion is configured to follow a connector during translation of the connector or along the slit when the connector is fastened to the sliding door or window. across the slit. In one embodiment, the slot is at the base of the rail. In one embodiment, the rail is a rectangular channel. In an embodiment, the rail further comprises an aperture at one end for the ribbon cable to exit the rail. In one embodiment, the rail is configured to allow translation of the first portion of the ribbon cable parallel to the length of the rail and also perpendicular to the length of the rail. In one embodiment, the sliding door or window includes a switchable optical device. In one embodiment, the switchable optical device is an EC device. In one embodiment, the sliding door or window includes an alarm system. <br>As mentioned above, when considering where to attach a wiring connector to an IGU, the location of a connector configuration within the IGU can be important. The flexibility of attaching the wiring assembly to an IGU can significantly reduce wiring complexity and length, and thus save the manufacturer and installer considerable time and money. One embodiment is an electrical connection system comprising a slide rail comprising two or more tracks providing electrical communication to electrodes of an electrochromic device of the IGU via wiring and bus bars. The slide rail is, for example, embedded in the second seal area of the IGU. An associated connector engages the rails and thereby electrically connects to the rails. One non-limiting example of the above-described slide rail is described with respect to FIGS. 10A and 10B . 10A and 10B depict aspects of an IGU 1000 including a slide rail 1025 and an associated connector 1045 . In this example, slide rail 1025 can also serve as a spacer between the second sealing element of an electrochromic pane of the IGU and an electrical connector, but this sealing function is not required. In this description, "slide" is used simply to describe, for example, a one-piece structure in which a slide is formed as part of a frame made of a single material with a one-piece body, or a A "slide" is a component having an equivalent structure to a "frame", wherein the slide is a substructural component of the frame, for example made of the same or different materials. In other words, a "slide" is a structural feature of a one-piece body or frame, or a "slide" is a component of a frame. In the context of this description, a frame may or may not function as a spacer or separator for an IGU. For example, slide rail 1025 can reside in the second seal area of the IGU and also serve a sealing function between itself and the glass pane of the IGU, or slide rail 1025 can simply be embedded in the second seal in itself without being used as a sealing element. 10A is a schematic diagram of an IGU 1000 including an electrochromic pane 1010 . Electrochromic pane 1010 includes bus bars 1015 . The electrochromic pane 1010 mates with another pane (not shown) and is used together with the panes to form a first seal between a separator 1020 and the inner surfaces of the panes and an adhesive clip Set separator 1020. In this example, slide rail 1025 is used to form a second seal (similar to that formed between the glass panes and separator 1020) with an adhesive between the inner surfaces of the glass panes and slide rail 1025. between the first seal). Therefore, in this example, the first seal and the second seal are formed in the same manner. Slide rail 1025 adds additional rigidity and strength to the IGU structure as well as a sealing function. In some embodiments, the rail is embedded in a conventional secondary sealant and does not itself serve as a sealing element; in such embodiments, the rail need not traverse the entire perimeter of the IGU. Rail 1025 also includes tracks in the form of wires 1030 and 1035 in this example, which provide electrical communication to bus bar 1015 via wire 1017. That is, wire 1017 connects bus bar 1015 to wires 1030 and 1035 in track 1025 . Slide rail 1025 is further described with respect to FIG. 10B . FIG. 10A (bottom portion) shows slide rail 1025 only. Included here is an expanded view of a corner portion of slide rail 1025 showing details of a passageway in which wires 1030 and 1035 reside. In this example, wires 1030 and 1035 extend all around the channel of slide rail 1025 . In other embodiments, the wires 1030 and 1035 only extend in a portion of the slide rail 1025 (eg, one, two, or three sides). It can be different from wires as long as the track of the slide is conductive material, but wires are convenient because they are common and easy to configure in a slide, for example, slide 1025 can be moldable One of the wires is extruded plastic material, or the wires can be inserted into the slide rail after extrusion or molding. 10B shows a cross-section D of slide rail 1025 as indicated in FIG. 10A , showing details of wires 1030 and 1035 and fine details of slide rail 1025 . Slide rail 1025 may be a non-conductive material such as, for example, an extruded polymer that holds wires 1030 and 1035 in place. In one example, the slide rail 1025 is made of an extruded plastic channel material. The channel material is cut and formed (eg, ultrasonically welded) to form a one-piece body as depicted. As shown in FIG. 10B , wires 1030 and 1035 are located within recesses in slide rail 1025, and in this example, each wire is insulated on three sides (due to differences in the polymeric material surrounding the wires on three sides). conductive nature). As mentioned, the wires can be inserted into the recesses after manufacturing the slide rail. Slide rail 1025 includes two slots or channels 1040 and 1050 . Slot 1050 allows, for example, an electrical connector to be electrically connected to IGU 1000 from a window controller. Wires 1017 from bus bars 1015 of electrochromic pane 1010 may be received in slots 1040 . The wires 1017 can pass through the material of the slide rail 1025 (e.g., through an aperture from the slot 1040 and into the slot 1050) so that each of the wires 1017 can contact its respective wire 1030 or 1035 (depicting a wire 1017 , the slide rail passing through the aperture is not shown). In this context, "wires" 1017 may be other components that make electrical communication through the body of the slide rail, such as metal bus bars, tabs, transition rails, and the like. The apertures through which wires 1017 can pass can be sealed using, for example, an adhesive sealant residing in slits 1040 prior to or during IGU fabrication. In one example, a sealant is applied to the gap between the wire and the aperture. When the wires from the bus bar leads to the track of the slide rail are made of polymeric material, they can be formed in a molded polymer such that they One extrusion process) and sealed. Slit 1040 may also allow for additional wires and/or interconnections to the IGU and accommodate electrochromic controller components. In one embodiment, slot 1040 accommodates an electrochromic controller assembly. In one embodiment, the electrochromic controller components are completely accommodated in the slide rail body whether they are in the slot 1040 or not. In other embodiments, the electrochromic controller is housed at least partially within the spacer if no slide rail is used, and in some embodiments the electrochromic controller is completely housed within the spacer (separator) Inside. Embodiments of the controller with respect to spacers are described in more detail below. In one embodiment, slide rail 1025 is assembled with wire 1017 attached to wires 1030 and 1035 prior to attachment to bus bar 1015 . That is, one embodiment is a slide that includes tracks and wires connected to the tracks that pass through the slide such that once the slide is sandwiched between two panes of glass, optionally with an adhesive sealant In between, the slide immediately forms an airtight seal. In one such embodiment, the assembly of the IGU includes 1) attaching the wires 1017 to the bus bars and 2) then using the separator 1020 and slide rail 1025 to simultaneously form the first and second seals. Electrically connect to electrochromic pane 1010 with connector 1045. Connector 1045 may include a non-conductive body 1047 having two conductive tabs 1055 and 1060 . In this example, each of the two conductive tabs 1055 and 1060 is connected to a single incoming wire 1075 . Each of the single wires can be coupled to a connector and ultimately to a window controller as described herein. In this example, to establish an electrical connection, connector 1045 is inserted into slot 1050 and then twisted approximately 90 degrees so that each of conductive tabs 1055 and 1060 contacts a wire 1035 and 1030, respectively. In some embodiments, the tabs 1055 and 1060 and the notches that receive the wires 1030 and 1035 are asymmetrical to ensure that a correct wire contacts the correct tab. As shown in FIG. 10B , tab 1060 is thicker than tab 1055 . Furthermore, the notch for accommodating the wire 1030 is smaller than the notch for accommodating the wire 1035 . Connector 1045 enters slot 1050 and then due to the configuration of the notches and tabs, the connector can only be rotated so that tab 1060 contacts wire 1030 and tab 1055 contacts wire 1035 . Different tab thicknesses and notch sizes are one way to help ensure that the connector 1045 contacts the correct wire, but other mechanisms for achieving this are possible. <br/>In another embodiment, the slide rail 1025 is metal and the wires and/or tracks of the system are insulated. Tabs 1055 and 1060 of connector 1045 are configured to penetrate insulation on the tracks or wires to establish an electrical connection. Slide rail 1025 may be a composite material such as a metal frame with a polymeric insert for the portions that house the rails or wires 1030 and 1035 . Those of ordinary skill will appreciate that the tracks must be insulated from the body of the slide, otherwise a short circuit will occur. Various configurations exist to achieve this result. In another embodiment, the main body of the frame portion is an electrically insulating foam material and the portion housing the rails is a rigid polymeric material. The spacers and/or frames described herein may also be made of fiberglass. <br/>Embodiments are for an electrical connection system for an IGU including an optical device requiring power, the electrical connection system comprising: a frame having a one-piece body and including a slide rail; a slide Rail, it comprises two or more rails, and each of these two or more rails is in electrical communication with a wire; A wire is configured to pass through the frame to connect to an electrical power of the optical device a distribution assembly; and a connector configured to establish an electrical connection to the two or more rails and to provide power to each of the two or more rails. In one embodiment, the frame comprises an electrically insulating and conducting polymeric material. In one embodiment, the slide rail comprises an electrically insulating conductive polymer material and each of the two or more tracks comprises copper. The electrical connection system can be configured to act as the only spacer for the IGU (ie, a structural component that forms the first seal). In one embodiment, the connector is a twist connector that fits into a notch in the slide rail, and when twisted, engages the two or more rails to establish electrical communication. The optical device can be an electrochromic device. In some embodiments, the frame includes at least some of the electrical components configured to control a controller of the optical device. The electrical connection system can be configured to be used as a second seal in the IGU. Those of ordinary skill will appreciate that other configurations of slide rails 1025 are possible. For example, in one embodiment, slide 1025 is a linear slide inserted along one side of the IGU in the second seal area. One, two, three or four of these linear slides are installed in the IGU, each along a separate side of the IGU, depending on requirements. In another embodiment, the slide rail 1025 is U-shaped so as to allow electrical connections to be made through at least three sides of the IGU when installed in the second seal area of the IGU. As mentioned above, in some embodiments, the slide rail 1025 itself may be used as an IGU spacer (forming the first seal) rather than as a complementary structure to a spacer as described above (with as a secondary sealing element or not as a secondary sealing element). When used as the sole spacer, the frame of the slide rail can be wider than possible for a typical spacer of an IGU. That is, the width (along the first sealing surface) of a conventional IGU spacer is approximately 6 millimeters. The spacers described herein can be of conventional width or up to about two and a half times (about 2× or about 2.5×) the width. For example, the spacers described herein can be from about 10 millimeters to about 25 millimeters wide, from about 10 millimeters to about 15 millimeters wide, and in one embodiment from about 10 millimeters to about 12 millimeters wide. This extra width provides a greater margin of error in a sealing operation than a conventional spacer. This provides a stronger seal between the IGU spacer and the glass lite. In certain embodiments, this makes the first seal area even more robust when the wires for the bus bars extend through the spacer itself rather than through the first seal. Embodiments are used in an electrical connection system including an IGU for an optical device that needs to be powered. The electrical connection system includes: a frame having a one-piece body and including a slide rail including two or more rails. Each of the two or more rails is configured to pass through the frame to connect to a wire of a power distribution component of the optical device and configured to establish an electrical connection to the two or more above the rails and a connector that powers each of the two or more rails is in electrical communication. The power distribution component of the optical device can be a bus bar. In one embodiment, the frame comprises an electrically insulating and conducting polymeric material. In certain embodiments, the slide rail comprises an electrically insulating conductive polymeric material and each of the two or more tracks comprises copper. In one embodiment, the electrical connection system is configured to serve as the only spacer for the IGU. In one embodiment, the connector is a twist connector that fits into a notch in the slide rail, and when twisted, engages the two or more rails to establish electrical communication. The optical device can be an electrochromic device, a photovoltaic device, a suspended particle device, a liquid crystal device and the like. In one embodiment, the frame includes at least some of the electrical components configured to control a controller of the optical device. In one embodiment, the frame includes an on-board controller such as that described in US Patent No. 8,213,074. In some embodiments, the electrical connection system is configured to be used as a secondary sealing element in the IGU. In one embodiment, the electrical connection system is configured to be used as a first seal in the IGU. <br/>Using slide rail 1025 as a spacer for an IGU is an example of a "pre-wired" spacer embodiment. That is, wires can pass through the body of the spacer itself to contact the bus bars through the first seal, rather than extending between the spacer and glass. Additionally, the lengths of the wires can extend through the interior of the spacer rather than around the spacer in the second seal area. These and other embodiments are described in more detail below. Certain embodiments have been described in terms of electrochromic devices; however other optical devices may be applied. <br/>11A-11E depict aspects of IGU wiring schemes where the IGU includes an optical device such as an electrochromic device. Certain embodiments described herein refer to a single optical device; however, another embodiment is where the IGU includes two or more optical devices. The electrical connection systems described herein include configurations that power one or more optical devices in a single IGU. Referring to FIG. 11A , an IGU 1100 is constructed by fitting an electrochromic glass sheet 1105 with a spacer 1110 and a second glass sheet 1115 . In this example, a bus bar (one of the power distribution components of the electrochromic device on the glass sheet 1105) 1150 is configured outside the spacer 1110 in the final configuration. This is described in more detail with respect to Figure 1 IB. 11B shows the cross-section XX of IGU 1100 . In this depiction, electrochromic glass lite 1105 is the lower glass lite and glass lite 1115 is the upper glass lite. Spacer 1110 fits the glass sheets on the opposite side with an adhesive 1125 that defines the first seal of the IGU, i.e., the top and bottom surfaces of spacer 1110 (as pictured) define the spacer The first sealing area. Once mated, there is a volume 1140 defined within the IGU; typically this is filled or evacuated with an inert gas. The spacer may have a desiccant (not shown) inside. The second sealant material 1130 is outside the perimeter of the spacer 1110, but generally does not extend beyond the edge of the glass sheet, thereby defining the second seal of the IGU. The electrochromic device 1145 on the glass sheet 1105 is a thin-film coating on the order of hundreds of nanometers to several microns thick. The bus bars 1150 power the coatings 1145, each powering a different transparent conductive layer to generate a potential across the layers of the device 1145 and thereby drive the optical transition. In this example, the busbars are tied outside the spacer in the second seal. If all of the bus bars are tied outside the primary seal, then no wiring to the bus bars is involved and there is no possibility that the wiring will interfere with the primary seal of the IGU. Embodiments described herein provide a power supply system that delivers power to the bus bars when the bus bars are in the first seal of the IGU and/or inside the sealed volume 1140 of the IGU. Those of ordinary skill will appreciate that an IGU can have a bus bar in the second seal and, for example, the first seal of the IGU or a second bus bar in the sealed volume. Embodiments include systems for delivering power to these configurations as well. <br/>11C and Figure 11D show that when the bus bar is tied in the first seal, in the conventional device, the wiring of the bus bar passes through the first seal. This is depicted by the dashed arrows in the diagram. If both sheets of glass have optics, the risk of breaking the first seal is doubled, because the wiring of each sheet of glass passes through the first seal adjacent to each sheet of glass, or the connection of the two sheets of glass must pass through the first seal. A first seal that is too close to a single sheet of glass. FIG. 11E shows that a (silver-based) conductive ink, for example for bus bars, can be used as a rail 1160 that is sealed across the first track and wires are connected to the rail. This may help somewhat maintain the integrity of the first seal, but still increases the likelihood of first seal failure due to traversal of the first seal by the ink. That is, the first seal is optimized for adhesion between the spacer and the material of the glass sheet (eg, glass). The seal is not necessarily good when a different material such as wire or conductive ink is introduced. When this dissimilar material traverses the primary seal, there is a high probability that the primary seal will fail in this area. FIG. 11E also shows that it is common for the wiring of the bus bar to extend outside the spacer and within the area of the second seal to a "pigtail" connector 1165 (which is a length of wire with a connector at the end). Embodiments described herein provide an electrical connection system for an IGU. In particular, the described embodiments include "pre-wired" spacers that protect the bus bars (or equivalent power transfer components) of the optical device when they are within the first seal or sealed volume of the IGU. Bus bar power supply. This allows maintaining the integrity of the first seal and simplifies the manufacture of the IGU. One embodiment is a spacer for an IGU configured to power an optical device via one or more power distribution components on a glass sheet of the IGU, wherein the one or At least one of the plurality of power distribution components is within a first seal or sealed interior volume of the IGU, and wherein power supplied to the at least one of the one or more power distribution components does not traverse the first seal of the IGU A seal. 12A depicts a cross-sectional view of a pre-wired spacer 1200 . The spacer 1200 has a wire 1205 passing through one of them. Wires 1205 carry electrical power from an external component 1210 that is either in the second seal (as depicted), outside the second seal, or has an external component 1210 that is both inside and outside the second seal. part. In this example, 1210 is an electrical receptacle into which a plug is configured and thereby powers lead 1205 . Wire 1205 is in electrical communication with (eg, soldered to) bus bar 1150 . In one embodiment, the outer component 1210 is a slide rail 1205 as described with respect to FIGS. 10A and 10B , eg, that surrounds the spacer 1200 for about some or all of its perimeter. In one embodiment, the structure of the spacer 1200 itself is similar to the slide rail 1205 , ie it has a slide rail system for establishing electrical communication with the optical device via the wire (or wires) 1205 . In the latter embodiment, there may be no secondary seal and the spacer 1200 may be wider than a conventional spacer such that the primary seal is, for example, twice the sealing area of a conventional primary seal or more times. <br/>12B shows the spacer 1200 from a top view and incorporated into an IGU 1215. In this example, the spacer 1200 has wires that pass through the width of the spacer. One of the wires attached to the bus bar 1150a is also attached to a connector 1225 (and thus in electrical communication with a second wire across the spacer in the area of the second seal), and in this example Connected to an on-board controller 1220. In some embodiments, connector 1225 is not necessary, as a single wire connects to bus bar 1150a , passes through spacer 1200 and connects to controller 1220 . Controller 1220 is also in electrical communication with bus bar 1150b via another wire passing through the spacer. The pre-wired spacer 1200 has the advantage that it can be laid and quickly welded to the bus bars and connectors 1225 (if present) during IGU manufacture. 12C shows a partial cross-section of the spacer 1200, showing that the spacer can be of a conventional construction, ie a metal such as stainless steel or aluminum, through which a wire passes. Seal 1230 ensures that gas leaks from the sealed volume of the IGU do not pass through the aperture through which the wire passes. Seal 1230 may be a rubber grommet tight enough to seal as described or seal 1230 may be a polymeric or epoxy sealant added after the wire is extended through the aperture in the spacer. Figure 12D shows a spacer 1235 made of a foamed or solid polymeric material. Since the wire is cast in the spacer or the foam is blown or formed with the wire in it, a good hermetic seal is achieved. 13A depicts another IGU 1305 with a pre-wired spacer 1300 . In this example, the wires passing through the spacer 1300 are contained almost entirely within the body of the spacer. That is, the wires in electrical communication with the bus bar 1150a originate only from the spacers 1300 at the ends thereof to connect the bus bar 1150a and connect to the external components 1310, respectively. In this example, the other wire passing through the spacer 1300 is shorter and passes more or less directly through the spacer 1300 to electrically connect to the bus bar 1150b. Also, in this example, component 1310 is a socket. Socket 1310 is configured to receive a controller assembly or an entire on-board controller. That is, in the latter embodiment, the controller is a "plug-in" module. The IGU is constructed as depicted in Figure 13A with the receptacle 1310 in the second seal. The controller (not pictured) is a plug-in module that may or may not fit completely within the second seal (not beyond the edge of the IGU). In this way, the IGU can be constructed independently of the on-board controllers, and the on-board controllers can be easily upgraded and/or extracted from the IGU. This avoids having to replace one of the IGUs with an on-board controller permanently fastened to the second sealant. Figure 13B depicts a spacer 1300 in which a pigtail connector (rather than receptacle 1310) is used as a common end for wires passing through the spacer. In one embodiment, a pre-wired spacer as described herein may also include a controller for at least one optical device of an IGU. The controller can be external to the spacer (eventually configured in the secondary seal or outside the IGU), or the controller can be inside the spacer itself. The spacer can be metal or a polymeric material that can be foamed or solid. Those of ordinary skill will appreciate that the pre-wired spacer 1300 makes IGU fabrication extremely simple. That is, it is only necessary to register the glass sheet with the spacer, solder the wires to the bus bars and then seal the IGU. Depending on the pre-wired spacer used, a second course of sealing material may or may not then be added. 14A depicts a pre-wired spacer 1400 . The spacer 1400 has a pigtail connector as described herein, but the spacer 1400 has contact pads 1405 that are in electrical communication with wires inside the body of the pre-wired spacer 1400 rather than wires originating from inside the spacer (e.g., Such as the wires that the spacer 1300 has). In one embodiment, the pre-wired spacer may be made of an electrically insulating material, such as a polymer in solid or foam form. The contact pads are a metal such as copper, but may comprise gold, silver or other metals for better electrical contact. The contact pads 1405 may be coplanar with, extend beyond, or below the sealing surface of the pre-wired spacer 1400, depending on need. Typically, but not necessarily, the contact pads do not span the width of the spacer's sealing surface such that, for example, there is at least some spacer material on either side of the contact pad to achieve a good seal with the glass . The contact pads depicted here are singular and have a generally rectangular shape, but this is not required. For example, there may be multiple contact pads configured to contact a single bus bar (eg, ring pads arranged linearly along one side of the spacer and similarly shaped configurations along one side of the spacer). 14B depicts the fabrication of an IGU with pre-wired spacers 1400. When the spacer is registered with glass sheets 1410 and 1415 , contact pads 1405 (not depicted, which are on the backside of spacer 1400 as drawn) are registered with bus bar 1425 . The glass lite 1410 has an optical device, such as an electrochromic device, on a surface mating with the sealing surface of the spacer 1400 . When the glass sheets are mated with the spacer, electrical communication is established between the contact pads and the bus bars. If an adhesive sealant is used to form the IGU, it is applied in such a way that it does not (at least not entirely) get between the contact pads and the bus bars. In some embodiments, the contact pads are configured to penetrate any encapsulant present between the contact pads and the bus bar. For example, the contact pads may have a rough surface and/or protrusions that make good electrical contact with the bus bars (although an adhesive sealant appears between the two surfaces during mating). In other embodiments, the spacer is made of metal, and the contact pads are electrically insulated from the spacer body using an electrically insulating material. <br/>In one embodiment, the pre-wired spacer is titanium and no adhesive is used to form the primary seal. That is, a hermetic seal is formed to the glass-fused titanium by using high temperature localized heating at the glass-titanium interface. In one embodiment, the bonding is achieved by irradiating a laser through the glass sheets of the spacers to be bonded. In one embodiment, a boron compound is coated on the titanium spacer prior to laser irradiation. Due to the similar expansion coefficients of titanium and glass (eg, floating glass), titanium is used in certain hermetic seal embodiments. A hermetic seal with a titanium spacer can be used whether or not contact pads are used to electrically connect to the bus bars. As noted above, certain pre-wired spacers described herein have a slide rail for establishing electrical communication between a connector mating to the slide rail track and the optical device. FIG. 15 depicts a pre-wired spacer 1500 having a slide rail such as slide rail 1025, see FIGS. 10A and 10B. This figure shows that the width E of the spacer can be the same as a conventional spacer or thicker (such as described above (up to 25 mm wide)) to form a superior primary seal on the sealing surfaces 1515 and 1520 . In one embodiment, the width E is between about 10 mm and about 15 mm. The spacer 1500 has a passageway 1505 similar to the channel 1040 of the slide rail 1025 through which wires connected to the rails (1030 and 1035) can pass. The wires may pass to the spacer inner surface 1510 for soldering to bus bars, or may pass to the sealing surfaces 1515 and/or 1520 to contact pads for electrical communication with the wires. In one embodiment, the spacer is made of an electrically insulating material, and the tracks 1030 and 1035 are not insulated so that a connector such as connector 1045 (see FIG. 10B ) can be inserted and established electrical communication and It is not necessary to penetrate any insulation around such tracks. 16A is a cross-sectional perspective view of another pre-wired spacer 1600 including electrical connections around the perimeter of the spacer and wiring through the spacer. In this example, spacer 1600 is hollow as a conventional spacer, but has a wire passing through the spacer as described above. In one embodiment, the spacer is a foamed, polymeric material or fiberglass as described herein. The wires may (depending on whether a glass sheet or two glass sheets support the optics) pass to the inner surface 1510 to be soldered to a bus bar or connected to contact pads on the sealing surfaces 1515 and/or 1520 . In this example, the lead wires (in this example, two) of the spacer are each connected to a flexible conductive strip 1605 or 1610 . For example, each strip may represent the applied polarity of an electrochromic device on a glass lite across the IGU. The strip can be a metal strip such as copper or other good conductor. For example, the strip 1610 is welded or welded to a junction 1615 that supports the strip and makes good electrical connection to the strip 1610 and to the wire. During the manufacture of the IGU, the strips are embedded in a second encapsulant. For example, the strips are installed, and then the second coat of sealant is applied using, for example, a tip to inject the sealant between and under the strips, and then applied over the strips to encapsulate (and suspend) the strips in the IGU's secondary sealant. The electrical connections to the strips are described in more detail with respect to Figures 16B-16D. 16B-16C show aspects according to a particular embodiment of the pre-wired spacer described with respect to FIG. 16A. In this example, a spacer 1620 has conductive strips 1605 and 1610 (same as spacer 1600). In this example, there is electrical communication between the strip 1610 and a contact pad 1625 on the sealing surface 1515 of the spacer 1620 . Referring to Figure 16C, the strips are embedded in the second sealant as described above, in this example about the entire perimeter of the IGU. In one example, the strips span at least about 90% of the perimeter of the IGU. An electrical connection is made through a connector 1630 between a power supply for the optical device and the strips. Connector 1630 is a pin connector whose pin is pushed through the second sealant and thereby establishes electrical communication with strips 1605 and 1610 by contacting or penetrating the strips. In this example, the pins each have a wire from the power supply to the pins and are barbed pins so that they remain solid in the second encapsulant and are electrically connected to their respective strips. Using this electrical connection system, the installer can (depending on whether there is also a controller embedded in the secondary seal and/or avoiding interface 1615) just use the pin connector to penetrate almost anywhere on the perimeter of the IGU The second sealant and establishes electrical communication. In this example, when the IGU is handled after the connector 1630 is installed, the body of the connector is relatively flat or low profile so as not to take up too much space, and also avoids vibration loosening by shear forces. Another advantage of this system is that if the installer decides that the placement of the connector is unsatisfactory (for example, she intends to establish electrical continuity on the other side of the IGU), she can simply cut the wires, Electrical tape or other insulating sealant covers the connector and another connector is applied where desired. If there is a controller in the secondary sealant or to mark the location where any joint resides, color codes or other distinctive markings may be applied to the secondary seal to distinguish that location from Apply the connector in . 16D shows an alternative thread-through pin connector according to the embodiment described with respect to FIGS. 16A-16C . Connector 1640 has pins without barbs. The advantage of this configuration is that the connector pins can be inserted into the second encapsulant and removed without damaging the conductor strips and reinserted at another location. Connector 1645 has a plurality of pins for establishing an electrical connection to each conductor strip. That is, there is more than one pin such that electrical communication with each strip is ensured. When the pins pass through the second sealant, there may be some sealant on the pins which will interfere with electrical communication. When there are more pins penetrating into a particular conductor strip, the probability of completely blocking the electrical connection is very low, ie the probability of establishing a good electrical connection is very high. In any pin connector embodiment, the pins can be coated with gold, for example. Connector 1650 has multiple pins and uses a ribbon cable instead of traditional wires. In some embodiments, the strip conductor system is used not only for electrical communication (ie, to carry power), but also for connecting lines. There may be two, three, four, five or more strips and corresponding pins for threading the strips and establishing electrical communication. <br/>An embodiment is a method of fabricating an IGU, the method comprising: registering a prewired spacer to a first glass lite containing an optical device; registering a second glass lite to the prewired a spacer and the first glass sheet; and securing the pre-wired spacer to the first glass sheet and the second glass sheet. The second glass sheet optionally includes a second optical device. In one embodiment, the pre-wired spacer includes wires originating from the inner surface of the pre-wired spacer and the wires are soldered to the optical device prior to registration with the first glass lite or the second glass lite The bus bar and the second optical device (if present). The pre-wired spacer may include one or more contact pads on its first sealing surface configured to secure the pre-wired spacer to the first glass sheet and the second glass sheet. The foil establishes electrical communication with the optical device, the second optical device (if present) or bus bars thereon. In one embodiment, the fastening of the pre-wired spacer to the first glass lite and the second glass lite is comprised between the sealing surface of the pre-wired spacer and the first glass lite and the second glass lite Use an adhesive sealant. In another embodiment, securing the pre-wired spacer to the first glass lite and the second glass lite comprises forming a hermetic metal-to-glass seal, wherein the pre-wired spacer comprises at least the sealing surfaces One of the metals. The metal can be titanium. <br/>In one embodiment, an on-board controller is embedded in the second seal and a ribbon cable is embedded in the second seal. FIG. 17A depicts an electrical connection system 1700 in which a ribbon cable 1710 is used in the second seal in conjunction with a feed-in connector as described herein. A controller 1705 is also embedded in the second seal. A feed-in connector is used to establish electrical communication to the two or more strips (e.g., conductive strips) of the ribbon cable, the connector having a One or more pins. This electrical connection system allows for flexible placement of the connector on the IGU. 17B depicts an electrical connection system in which a ribbon cable 1715 is used in the secondary seal and pin sockets 1720 are configured in the secondary seal around the perimeter of the IGU. In this embodiment, a pin connector (not shown) can be introduced into either of the pin receptacles 1720 as they are redundant to the system. The pin receptacles may be of the locking tab type, wherein the tabs lock the union into place immediately upon engagement of the pin connector. The tabs are manipulable to allow the pin connector to be disengaged from the receptacle. There is less chance of the secondary sealant interfering with electrical continuity because the pins and corresponding receptacles do not have a secondary sealant. The controller 1705 may also have a pin socket 1720 . In one embodiment, there is at least one pin socket on each side around the perimeter of the IGU. In some embodiments, the controller is not embedded in the second encapsulant; however, push-in and pin-type connectors and socket-type connectors are still suitable. These embodiments are described in more detail below. <br/>An embodiment is an electrical connection system for an IGU including an optical device requiring power, the electrical connection system comprising: a ribbon cable embedded in a second seal of the IGU and configured to The optical device is powered; one or more pin sockets, which (are) are also in the second seal and are in electrical communication with the ribbon cable, the one or more pin sockets are configured in redundant form, the Each of the one or more pin receptacles has the same electrical connectivity as the optical device; and a pin connector configured to mate with each of the one or more pin receptacles and deliver power to the optical device . In one embodiment, each of the pin connector and the one or more pin receptacles are configured to reversibly lock together when mated. In another embodiment, the electrical connection system further includes a controller configured to control the optical device, the controller also being embedded in the second seal and including at least one of the one or more pin sockets. By. In one embodiment, the IGU includes at least four of the one or more pin sockets in the second seal, including the controller in the second seal or if the controller is in the second seal. Road sealed exterior. In some embodiments, when the controller is tied outside the second seal, the controller includes the pin connector. In one such embodiment, the pin connector is configured such that when mated with one of the one or more pin receptacles, the controller is adjacent to the second seal of the IGU. In another such embodiment, the pin connector is attached to the controller via a second ribbon cable. This allows the controller to be configured in a frame system where the controller may or may not be adjacent to the edge of the IGU. In any of the above embodiments, the width of the controller can be configured such that it is no greater than the width of the IGU. 18A depicts an electrochromic window controller 1800 with a pass-through pin connector as described herein. In this example, the electrochromic controller is configured so that it is no thicker than the IGU, but this is not required. The controller can be almost IGU as depicted in Figure 18B Any point around 1810 is attached to the IGU (as indicated by the thick dashed line). In this example, the controller 1800 interfaces with a control pad and/or a network controller via a ribbon cable. Ribbon cables are convenient for this purpose because they can carry power and communication lines while having a flat, low profile that facilitates deployment of the cable in the window's framing system. In one embodiment, the controller 1800 does not use pass-through pins, but uses a pin-and-socket type of connection to the IGU; that is, where there are pin-sockets embedded in the second seal around the perimeter of the IGU ( As in Figure 17B, but where the controller is outside the second seal and plugged into the one of the pin sockets). Using pin sockets with locking tabs, the controller can be securely attached to the IGU without further attachment components. In certain embodiments, the controller is not thicker than the IGU in that dimension; that is, substantially parallel to the outside of the IGU's glass sheet when the controller is secured to the IGU as depicted in FIG. 18B The face or surface of the controller of the primary faces does not extend beyond the primary faces. In this way, the controller can be more easily accommodated within the frame of the IGU. The controller can be long and thin (eg, spanning about 6 inches to about 15 inches in length) and thus can be attached to the IGU secondary seal at more than one area of the controller. The secondary seal may be attached to the secondary seal using both a pin connector establishing electrical communication as described above and an anchor specifically configured to attach to the secondary sealing material for attachment purposes only; , to secure the controller to the IGU but not establish electrical communication with the one or more ribbon cables. In one embodiment, the controller uses a pierce-type pin connector that penetrates the second encapsulant to make electrical contact with the ribbon-type conductors and is configured only for anchoring the controller to the second encapsulant. Such anchors for the secondary sealant. For example, the anchors can be configured to penetrate the second seal (e.g. between the strip conductors) or penetrate the second seal through (e.g.) the strip conductors, but the The anchors may be made of electrically insulating material so as not to establish electrical communication with the strip conductors. In one embodiment, for example, the anchors are barbed pins that do not penetrate the second seal sufficiently deep to reach the ribbon cables. <br/>An embodiment is an electrical connection system for an IGU that includes an optical device requiring power, the electrical connection system comprising: one or more ribbon conductors configured to be embedded in the a second seal of the IGU and power to the optical device; and a pin connector configured to establish connection to the one or more ribbon conductors by penetrating the second seal material and penetrating the one or more ribbon conductors One or more strip conductors are electrically connected, thereby establishing electrical communication with the one or more strip conductors. In one embodiment, the pin connector includes barb pins configured to secure the pin connector to the one or more ribbon conductors. The one or more ribbon conductors can power the optical device via wiring through the spacer between the IGUs. In one embodiment, the spacer between the IGUs includes one or more contact pads on the first sealing surface of the spacer, the one or more contact pads configured to contact one or more of the optical devices. The power distribution assembly establishes electrical communication. The one or more power distribution components of the optical device may be bus bars. The pin connector may be a component of a controller configured to control the optical device. In one embodiment, the width of the controller is not greater than the width of the IGU. In another embodiment, the one or more strip conductors are configured such that the controller can be secured to the edge of the IGU for at least 90% of the circumference of the IGU. <br>While the foregoing embodiments have been described in certain detail to facilitate understanding, such described embodiments should be considered as illustrative and not restrictive. Those of ordinary skill will appreciate that certain changes and modifications may be practiced within the scope of the appended claims.

<p>100: voltage distribution &lt;br/&gt;02: negative slope &lt;br/&gt;03: negative hold &lt;br/&gt;04: positive slope &lt;br/&gt;06: negative hold &lt;br/&gt;08: positive slope &lt;br/&gt;09: Keeping &lt;br/&gt;10: negative slope &lt;br/&gt;12: Keeping &lt;br/&gt;00:Electrochromic device &lt;br/&gt;05: Substrate &lt;br/&gt;10: The first transparent conductive oxide (TCO) layer &lt;br/&gt;15: Electrochromic stack &lt;br/&gt;20: Second transparent conductive oxide (TCO) layer &lt;br/&gt;25: Second bus bar &lt;br/&gt;30: The first bus bar &lt;br/&gt;31: wire &lt;br/&gt;32: wire &lt;br/&gt;35: Connector &lt;br/&gt;40: Connector &lt;br/&gt;05:Electrochromic pane &lt;br/&gt;10: bus bar &lt;br/&gt;15: glass pane &lt;br/&gt;20: Separate parts &lt;br/&gt;25: Insulating Glass Unit (IGU) &lt;br/&gt;27: frame &lt;br/&gt;30: wire assembly &lt;br/&gt;35:Window assembly &lt;br/&gt;45: Communication line &lt;br/&gt;50: window controller &lt;br/&gt;00: Transportation system &lt;br/&gt;02: Insulating Glass Unit (IGU) &lt;br/&gt;04: Insulating Glass Unit (IGU) &lt;br/&gt;12: wire assembly &lt;br/&gt;00: Insulating Glass Unit (IGU) &lt;br/&gt;05:Electrochromic pane &lt;br/&gt;15: bus bar &lt;br/&gt;17: Electrochromic device &lt;br/&gt;20:Separator/spacer &lt;br/&gt;22: wire &lt;br/&gt;23: wire &lt;br/&gt;25: The first connector &lt;br/&gt;25a: the first connector &lt;br/&gt;27: Liner &lt;br/&gt;27a: electrical contacts &lt;br/&gt;29: Ferromagnetic components &lt;br/&gt;30: wire assembly &lt;br/&gt;35: Second connector &lt;br/&gt;35a: Second connector &lt;br/&gt;40: Liner &lt;br/&gt;45: wire &lt;br/&gt;50: ferromagnetic element &lt;br/&gt;60: magnet &lt;br/&gt;90: Insulating Glass Unit (IGU) &lt;br/&gt;00:Window assembly &lt;br/&gt;05: frame &lt;br/&gt;07: dotted line &lt;br/&gt;10: Insulating Glass Unit (IGU) &lt;br/&gt;15: Mosaic glass block &lt;br/&gt;17: wire assembly &lt;br/&gt;20: Floating connector &lt;br/&gt;25: Frame material &lt;br/&gt;30: Fixed connector &lt;br/&gt;00: window unit &lt;br/&gt;05: Movable frame &lt;br/&gt;07: Fixed frame &lt;br/&gt;10: frame &lt;br/&gt;15: Floating connector &lt;br/&gt;16: Flange &lt;br/&gt;17: Nose &lt;br/&gt;18: End face &lt;br/&gt;19: Concave contact piece &lt;br/&gt;20: Fixed connector &lt;br/&gt;21: Mounting hole/deviation hole &lt;br/&gt;25: Convex contact piece &lt;br/&gt;26: rising surface &lt;br/&gt;27: Spring &lt;br/&gt;28: Mounting hole &lt;br/&gt;00: window unit &lt;br/&gt;05: The first movable frame &lt;br/&gt;07: The second movable frame &lt;br/&gt;10: frame &lt;br/&gt;15: Insulating Glass Unit (IGU) &lt;br/&gt;17: Insulating Glass Unit (IGU) &lt;br/&gt;20: track &lt;br/&gt;25: Floating connector &lt;br/&gt;30: Spring &lt;br/&gt;35: Connector pin &lt;br/&gt;00: Insulating Glass Unit (IGU) &lt;br/&gt;00a: Insulating Glass Unit (IGU) &lt;br/&gt;00b: Insulating Glass Unit (IGU) &lt;br/&gt;00c: Insulating Glass Unit (IGU) &lt;br/&gt;00d: Insulating Glass Unit (IGU) &lt;br/&gt;00f: Fixed door &lt;br/&gt;00m: Movable door/slider &lt;br/&gt;02: Connector &lt;br/&gt;03: Folding door system &lt;br/&gt;05: Ribbon cable assembly/wiring assembly &lt;br/&gt;07:Male connector &lt;br/&gt;09:Male connector &lt;br/&gt;10: window controller &lt;br/&gt;15: window unit &lt;br/&gt;17: Rotation axis &lt;br/&gt;20: frame &lt;br/&gt;25: Movable frame &lt;br/&gt;30:Window unit &lt;br/&gt;32: frame &lt;br/&gt;35: Movable frame &lt;br/&gt;37: Mobile mechanism &lt;br/&gt;40: Ribbon cable &lt;br/&gt;41: Connector &lt;br/&gt;43: Connector &lt;br/&gt;45: Adhesive &lt;br/&gt;50:Sliding door assembly &lt;br/&gt;52: Ribbon cable &lt;br/&gt;55: rail/channel &lt;br/&gt;60: Slit &lt;br/&gt;65: Connector &lt;br/&gt;70: socket &lt;br/&gt;000: Insulating Glass Unit (IGU) &lt;br/&gt;010:Electrochromic pane &lt;br/&gt;015: bus bar &lt;br/&gt;017: wire &lt;br/&gt;020: Separate parts &lt;br/&gt;025: slide rail &lt;br/&gt;030: wire/track &lt;br/&gt;035: wire/track &lt;br/&gt;040: Slit/Channel &lt;br/&gt;045: Connector &lt;br/&gt;047: Non-conductive body &lt;br/&gt;050: Slit/Channel &lt;br/&gt;055: Conductive Tab &lt;br/&gt;060: Conductive Tab &lt;br/&gt;075: Incoming wire &lt;br/&gt;100: Insulating Glass Unit (IGU) &lt;br/&gt;105: Electrochromic glass sheet &lt;br/&gt;110: spacer &lt;br/&gt;115: second glass sheet &lt;br/&gt;125: Adhesive &lt;br/&gt;130:Second sealant material &lt;br/&gt;140: sealed volume &lt;br/&gt;145: Electrochromic device/coating &lt;br/&gt;150: bus bar &lt;br/&gt;150a: bus bar &lt;br/&gt;150b: bus bar &lt;br/&gt;160: Transition &lt;br/&gt;165: Pigtail connector &lt;br/&gt;200: pre-wired spacer &lt;br/&gt;205: wire / slide rail &lt;br/&gt;210: External components &lt;br/&gt;215: Insulating Glass Unit (IGU) &lt;br/&gt;220: On-board controller &lt;br/&gt;225: Connector &lt;br/&gt;230: sealing &lt;br/&gt;235: spacer &lt;br/&gt;300: pre-wired spacer &lt;br/&gt;305: Insulating Glass Unit (IGU) &lt;br/&gt;310: External components/sockets &lt;br/&gt;400: pre-wired spacer &lt;br/&gt;405: Contact pad/connector &lt;br/&gt;410: glass flakes &lt;br/&gt;415: Glass flakes &lt;br/&gt;425: bus bar &lt;br/&gt;500: pre-wired spacer &lt;br/&gt;505: access &lt;br/&gt;510: Inner surface of the spacer &lt;br/&gt;515: sealing surface &lt;br/&gt;520: sealing surface &lt;br/&gt;600: pre-wired spacer &lt;br/&gt;605: Flexible Conductive Strip &lt;br/&gt;610: Flexible Conductive Strip &lt;br/&gt;615: interface &lt;br/&gt;620: spacer &lt;br/&gt;625: Contact pad &lt;br/&gt;630:Connector &lt;br/&gt;640: Connector &lt;br/&gt;645: Connector &lt;br/&gt;650:Connector &lt;br/&gt;700: Electrical connection system &lt;br/&gt;705: Controller &lt;br/&gt;710: ribbon cable &lt;br/&gt;715: Ribbon cable &lt;br/&gt;720: pin socket &lt;br/&gt;800:Electrochromic window controller &lt;br/&gt;810: Insulating Glass Unit (IGU) </p>

Figure 1 shows an example of a voltage distribution for driving the optical state transition of an electrochromic device. &lt;br/&gt;2 is a cross-sectional schematic diagram of an electrochromic device. 3 shows an example of operations for fabricating an IGU comprising an electrochromic pane and incorporating the IGU into a frame. &lt;br/&gt;4 shows an example of a way in which an IGU comprising an electrochromic pane can be transported during manufacture and/or testing of the IGU. &lt;br/&gt;5A is a schematic diagram of an IGU including an electrochromic pane and associated wire assembly. 5B shows an example of a way in which an IGU comprising an electrochromic pane can be transported during manufacture and/or testing of the IGU. 5C depicts a first connector and a second connector each having two ferromagnetic elements. 5D depicts an IGU with two or more redundant connectors embedded in the second seal. 6 shows an example of a schematic diagram of an IGU comprising an electrochromic pane in a frame with a floating connector mounted in the frame. 7 shows and has an example of a schematic diagram of a window unit of an IGU including an electrochromic pane, and details of the connection configuration for powering the IGU. &lt;br/&gt;8 An example of a schematic diagram of a window unit of an IGU containing an electrochromic pane is shown, along with details of a connection configuration to power the IGU. 9A-9D show examples of schematic diagrams of IGUs and window units with ribbon cable connector embodiments as described herein. 9E shows an example of a schematic diagram of a sliding door with a ribbon cable connector system. 10A and 10B contain schematic diagrams of an IGU (IGU) with a frame that can be used as a second sealing element and as an electrical connector for an electrochromic pane of the IGU. 11A to 11E depict the aspects of the IGU wiring scheme. 12A to 12D depict aspects of several pre-wired spacers. 13A and 13B depict a pre-wired spacer. 14A and 14B depict another aspect of a pre-wired spacer. 15 is a cross-sectional perspective view of a pre-wired spacer including electrical connections around the perimeter of the spacer and wiring through the spacer. 16A is a cross-sectional perspective view of another pre-wired spacer including electrical connections around the perimeter of the spacer and wiring through the spacer. 16B-16C show aspects according to a particular embodiment of the pre-wired spacer described with respect to FIG. 16A. 16D shows an alternative thread-through pin connector according to the embodiment described with respect to FIGS. 16A-16C . 17A depicts an electrical connection system in which a ribbon cable is used in the second seal in combination with a feed-in connector as described herein. 17B depicts an electrical connection system in which a ribbon cable is used in the second seal and pin and socket connectors are also configured in the second seal. 18A depicts an electrochromic window controller with a pass-through pin connector as described herein. 18B depicts an enlarged perspective view of one of the controllers as described with respect to FIG. 18A.