Battery pack

Battery

<p>A. . . Notebook PC</p><p>Q. . . Expand position</p><p>W. . . interval</p><p>1. . . Battery</p><p>2. . . Secondary battery</p><p>3. . . Circuit board</p><p>4. . . Positive terminal</p><p>5. . . Connection board</p><p>6. . . Guides</p><p>7. . . Adhesive tape</p><p>7a. . . Adhesive tape</p><p>9. . . wire</p><p>11. . . Electronic connector</p><p>12. . . Cylindrical secondary battery</p><p>13. . . Insulating paper</p><p>15. . . Insulating sheet</p><p>16. . . Insulating sheet</p><p>20. . . Additional box</p><p>twenty one. . . Frame for battery storage</p><p>twenty two. . . Support column</p><p>twenty three. . . Ribs</p><p>43. . . Spacer</p><p>48. . . Opening</p>

Fig. 1 is a side view showing an outline of a notebook personal computer to which the battery pack of the applicable embodiment is applied.

Fig. 2 is a top view showing the disposition state of the battery pack arranged in the additional box.

Fig. 3 is a perspective view showing the pre-processing of the secondary battery.

Fig. 4 is an explanatory diagram showing the joining operation of the guide plate for assembling the battery pack.

Fig. 5 is an explanatory diagram showing the bonding industry of the connecting board for assembling the battery pack.

Fig. 6 is a perspective view showing the arrangement of the secondary batteries in the assembled battery pack.

Figure 7 is a top view showing the completed state of the battery pack.

Fig. 8 is a plan view showing another configuration of the secondary battery arrangement.

Fig. 9 is a perspective view showing a form suitable for a cylindrical secondary battery.

Fig. 10 is a perspective view showing the structure of a spacer that becomes a conventional prior art structure.

FIG. 11 is a perspective view showing the arrangement state of the secondary battery caused by the spacer of the conventional prior art structure.

FIG. 12 is a perspective view showing an example in which the spacer of the conventional prior art structure is applied to a flat-angle type battery.

[Detailed description of the invention] [Technical field to which the invention belongs]

The present invention relates to a battery pack used as a power source for portable devices such as a notebook personal computer (hereinafter referred to as a notebook computer.) or a portable information terminal; in particular, the present invention relates to a consideration A battery pack with heat dissipation or pressure resistance of the secondary battery.

[Prior Art]

In a state where high output voltage or large battery capacity is required as a battery power source for portable devices, many secondary batteries are connected in series and/or in parallel to form a battery pack. The battery pack is housed in an assembly box, containing a large number of secondary batteries and circuit boards (constructing power circuits, etc.), and is configured as an integrated form, or is configured as an integrated form by heat shrink tubing or adhesive tape The shape of the group of batteries.

With the miniaturization of portable devices, battery packs are required to be miniaturized, and many secondary batteries are often integrated in a state of being closely adhered to each other. However, due to the generation of heat energy during the charging and discharging of the secondary battery, even a slight heat generation cannot sufficiently dissipate heat when many secondary batteries are arranged in close contact. As a result, the temperature of the secondary battery rises in the space of the closed assembly box, which has an adverse effect on the charge and discharge characteristics related to the temperature of the battery.

As an example of the prior art to solve the drawbacks caused by the above-mentioned secondary batteries in a close-fitting arrangement, the battery pack disclosed in Japanese Patent Laid-Open No. 2000-100401 is already known. In the battery pack disclosed here, when many cylindrical secondary batteries are arranged in parallel and connected to the side of the cylinder, as shown in FIGS. 10 and 11, spacers are arranged between the cylindrical secondary batteries 12 43. The spacer 43 respectively forms openings 48 and 49 in the direction connecting the side surface of the cylinder and the direction perpendicular to the direction of the side surface of the connecting cylinder.

[Problems to be solved by the invention]

When increasing the number of secondary batteries inside the battery pack, when arranging the secondary batteries on a plane, the plane area of the battery pack is increased, and the storage space of the battery pack in the assembly box or device requires a large space . In addition, in order to prevent the adverse effect on safety caused by the increase of the internal pressure of the battery caused by the pressure applied to the secondary battery when the external pressure is applied, the storage space of the assembly box or the device must be provided to prevent external pressure. The pillar structure such as the pillar deformed by the pressure. Particularly, in the flat-angled secondary battery 2 shown in FIG. 12, the planar area becomes larger, and therefore, the supporting structure becomes a necessary condition.

The aforementioned spacer 43 of the battery pack of the prior art is matched with the cylindrical secondary battery 12. However, as shown in FIG. 12, when applied to the flat secondary battery 2, the opening 48 can be used as a support Use the hole of the column. However, since the spacer 43 is not a connection member, even if several flat secondary batteries 2 are connected as much as possible, the connection strength cannot be obtained. In addition, the storage space of the battery pack of the device is not limited to a rectangular shape, but can also have a varying shape. Therefore, the aforementioned spacer 43 cannot cope with the varying shape. In addition, it is preferable to provide a larger open space between the secondary batteries 2 arranged in parallel to achieve the effect of improving heat dissipation, and at the same time, it is possible to freely install battery packs with a supporting structure.

The purpose of the present invention is to provide a battery pack that can form a space for heat dissipation and rigidity enhancement among many batteries, and can also cope with the deformation of the storage space.

[Means to solve the problem]

In order to achieve the foregoing objective, therefore, the battery pack of the present invention is characterized by electrically connecting a large number of secondary batteries, and at the same time, setting a certain interval to arrange the secondary batteries in parallel, by means of insulating plates, And connect the surface where the electrode of the secondary battery is arranged. Because the secondary batteries are connected in parallel by using an insulating sheet material as described above, and at the same time, the secondary batteries are arranged in parallel with a certain interval. Therefore, the secondary batteries are arranged in parallel and along the When repeating the arrangement in a parallel line direction and an arbitrary number of times, many secondary batteries are arranged in parallel with intervals and become integrated. The heat dissipation is good. In the interval, supports such as pillars are arranged to prevent application The pressure in the compression direction reaches the secondary battery.

In the aforementioned structure, an insulating sheet can be attached to the surface where the electrodes of the secondary battery are provided, so that the connection between the secondary batteries can be reliably performed.

In addition, the electrodes of the secondary battery can be connected separately by the metal plate, and at the same time, the insulating plate can be attached to the metal plate, and the electrical connection and mechanical connection can also be performed at the same position. It is made of insulating sheet to protect the thin metal sheet with low strength.

In addition, the insulating board is constructed so that the two sides of the resin board can be adhered to connect the secondary batteries by adhesion. As a result, the insulating board becomes an appropriate mechanism.

In addition, an even number of secondary batteries arranged in parallel with an odd number of secondary batteries at a certain interval are connected by an insulating plate, facing in any direction, and the insulating plate at the end is joined. In the case of the above secondary battery, it can cope with the changing shape of the battery storage space, and it is also possible to integrally connect an odd number of secondary batteries that are not easy to arrange.

In addition, many secondary batteries can be combined with the shape of the storage space of the secondary battery, and the arrangement direction can be combined, and can also be matched with the shape of the storage space, and can be selectively combined and arranged in the parallel arrangement direction and parallel line The number of directions in order to obtain a high degree of freedom coping effect.

In addition, the flat-angle type is preferably applied to the secondary battery system.

In addition, the connected or joined secondary batteries can be bundled by the adhesive tape along the parallel arrangement direction, so as to strengthen the integrated structure of the connected or joined multiple secondary batteries.

[Implementation of the invention]

Hereinafter, the embodiments of the present invention will be described with reference to the drawings of the attachments to facilitate the understanding of the present invention. In addition, the embodiment shown below is an example of the embodiment of the present invention, and does not limit the technical scope of the present invention.

Regarding the battery pack that constitutes the battery power source of a notebook personal computer, this embodiment is shown; as shown in Figure 1, it is formed to be able to be stored in an additional box 20 (which can be detachably installed in the notebook personal computer A). The shape of the battery storage space in the bottom surface.

2 is a plan view showing the storage state of the battery pack 1 of this embodiment in the aforementioned additional box 20; the additional box 20 shows the state of removing the cover fixed on the plane of the figure. The cover system is formed in the shape of a plate, and the cover system is a solid that is bolted and fixed on a plurality of hub arrows 24 inserted into the female bolts. The battery pack 1 is equipped with: 9 secondary batteries 2 stored in a battery storage frame 21 formed on an additional box 20; and a circuit board 3, which constitutes a battery protection circuit or communication with the notebook PC A Use circuits, etc. The aforementioned secondary battery 2 is formed as a flat-angled lithium ion secondary battery; the connecting plate 5 is provided with a certain interval W, and 8 secondary batteries 2 are arranged in parallel, and the remaining One secondary battery 2 is joined to the connecting plate 5 at the end.

The weight of the notebook personal computer A is applied to the additional box 20. In addition, in order to prevent the pressure from the human body from being applied to the notebook personal computer A, especially the pressure applied directly above the storage position of the battery pack 1, from spreading to the secondary battery 2, therefore, a support is formed in the additional box 20 The column 22 is used to be positioned within the space w between the secondary batteries 2 arranged in parallel, and to prevent bending caused by the pressurization of the cover, which is not shown. Since the height of the support post 22 is formed to be the same as the height of the battery storage frame 21, the support post 22 and the battery storage frame 21 support the bending of the cover caused by the pressure. As a result, It is possible to prevent pressure from being applied to the secondary battery 2. In addition, positioning ribs 23 corresponding to the interval W between the secondary batteries 2 arranged in parallel may be provided to determine the position of the secondary batteries 2 so as to maintain the interval W.

As described above, the detailed structure of the battery pack that is integrated in the deformed shape with the intervals W provided in the many secondary batteries 2 will be described below.

As shown in FIG. 3, an insulating paper 13 is attached to the surface on which the positive terminal 4 of the secondary battery 2 is formed. Regarding the secondary battery 2, as shown in FIG. 4, eight secondary batteries 2 are arranged on a jig, and the guide plate 6 is used for joining. In addition, as shown in FIG. 5, the connecting plate 5 that has been subjected to the adhesion treatment on both sides is attached to the important part. The connection plate 5 is a resin plate material that has electrical insulation, is formed into a shape corresponding to the cross-sectional shape of the secondary battery 2 and is rich in rigidity. As mentioned above, the guide plate 6 and the connecting plate 5 are when the eight secondary batteries 2 that are attached to each other open the space between the secondary batteries 2 starting to abut from the unfolding position Q shown in FIG. 5, as shown in the figure 6 shows that eight secondary batteries 2 are arranged in parallel with a gap W between them. The connecting plate 5 at the end in the state of connecting the 8 secondary batteries 2 is as shown in FIG. 6, and one side of the secondary battery 2 is attached as shown in FIG. 7, in each When the two flat surfaces of the secondary battery 2 straddle each secondary battery 2 and the adhesive tape 7 is attached, the nine secondary batteries 2 are firmly integrated.

Figure 7 shows the completed state of the battery pack 1; for the wiring 9 used to connect the secondary battery 2 and between the secondary battery 2 and the circuit board 3, and for the processing of the wire 9 or the circuit board 3 For fixing, etc., a small area of adhesive tape 7a is attached to important parts. In addition, the electronic connector 11 is pulled out from the circuit board 3 and can be connected to the notebook personal computer A. Since the battery pack 1 and its respective constituent elements are integrated, it can be supplied to the manufacturer of the notebook personal computer A in this state; among the manufacturers, as shown in Figure 2, in the additional box 20 When the battery pack is stored in the middle, the battery power supply attached to the notebook PC A can be manufactured quite easily. In addition, if the battery composition has the required shape, it can also be concealed in the main body of the notebook personal computer A.

The arrangement of many secondary batteries 2 is as shown in FIG. 8, and a certain interval W can also be set to arrange more than two secondary batteries 2 in parallel. The length of the insulating plate 16 is determined in accordance with the number of the secondary batteries 2. As mentioned above, it is possible to freely design and arrange secondary batteries according to the shape of the battery storage space.

In addition, as shown in FIG. 9, it is also possible to provide intervals, to arrange the cylindrical secondary batteries 12 in parallel, and to connect the secondary batteries by the insulating plate 15.

[Effects of the invention]

If the battery pack of the present invention is used, a space can be formed between the secondary batteries to improve their heat dissipation. At the same time, a pressurized support for supporting the compressed secondary battery can be provided in the space to facilitate It can prevent the secondary battery from being pressurized. In addition, since many secondary batteries can be arranged freely, the shape of the battery storage space can be matched.

Symbol description of main components

A. . . Notebook PC

Q. . . Expand position

W. . . interval

1. . . Battery

2. . . Secondary battery

3. . . Circuit board

4. . . Positive terminal

5. . . Connection board

6. . . Guides

7. . . Adhesive tape

7a. . . Adhesive tape

9. . . wire

11. . . Electronic connector

12. . . Cylindrical secondary battery

13. . . Insulating paper

15. . . Insulating sheet

16. . . Insulating sheet

20. . . Additional box

twenty one. . . Frame for battery storage

twenty two. . . Support column

twenty three. . . Ribs

43. . . Spacer

48. . . Opening

Schematic description

Fig. 1 is a side view showing an outline of a notebook personal computer to which the battery pack of the applicable embodiment is applied.

Fig. 2 is a top view showing the disposition state of the battery pack arranged in the additional box.

Fig. 3 is a perspective view showing the pre-processing of the secondary battery.

Fig. 4 is an explanatory diagram showing the joining operation of the guide plate for assembling the battery pack.

Fig. 5 is an explanatory diagram showing the bonding industry of the connecting board for assembling the battery pack.

Fig. 6 is a perspective view showing the arrangement of the secondary batteries in the assembled battery pack.

Figure 7 is a top view showing the completed state of the battery pack.

Fig. 8 is a plan view showing another configuration of the secondary battery arrangement.

Fig. 9 is a perspective view showing a form suitable for a cylindrical secondary battery.

Fig. 10 is a perspective view showing the structure of a spacer that becomes a conventional prior art structure.

FIG. 11 is a perspective view showing the arrangement state of the secondary battery caused by the spacer of the conventional prior art structure.

FIG. 12 is a perspective view showing an example in which the spacer of the conventional prior art structure is applied to a flat-angle type battery.