Control device, control system, and storage cell control method

0001The present invention relates to a control device, a control system, and a storage battery control method for controlling a plurality of storage batteries provided in an electric power consumer.

0002In recent years, there has been increasing interest in energy conservation, and an energy management system (EMS) for managing electric power on a consumer-by-consumer basis is drawing attention. The control device for power management in each house is called the home energy management system (HEMS).

0003In addition, consumers are introducing storage batteries for supplying electric power charged and discharged by electric power from distributed power sources or system power sources to load devices.

0004Further, a technique has been proposed in which a plurality of storage batteries are distributed and installed in a house (see, for example, Patent Document 1).

<p num="0005"><patcit num="1"><text>Japanese Unexamined Patent Publication No. 2011-17203</text></patcit></p>

0006By the way, since high-performance and large-capacity storage batteries are expensive, it is not always easy to introduce a plurality of such storage batteries into a house.

0007Therefore, it is expected that used in-vehicle storage batteries will be reused for residential use, or a large number of low-performance or small-capacity storage batteries will be combined and used for residential use.

0008However, since such a situation is not taken into consideration in the conventionally proposed technique, it is difficult to efficiently control a plurality of storage batteries.

0009Therefore, an object of the present invention is to provide a control device, a control system, and a storage battery control method capable of efficiently controlling a plurality of storage batteries provided in a consumer.

0010In order to solve the above-mentioned problems, the present invention has the following features.

0011The control device of the present invention is a control device for controlling a plurality of storage batteries provided in a power consumer, and includes an acquisition unit for acquiring information on the type and / or deterioration degree of each of the plurality of storage batteries, and the plurality of storage batteries. It is characterized by having a charge / discharge control unit that controls the charge / discharge of each of the plurality of storage batteries based on the information of the type and / or the degree of deterioration of each of the storage batteries.

0012The acquisition unit may acquire information on the type and / or the degree of deterioration of the predetermined storage battery by communicating with the predetermined storage batteries included in the plurality of storage batteries.

0013The acquisition unit may acquire information on the type and / or degree of deterioration of the predetermined storage battery by measuring the charge / discharge characteristics of the predetermined storage battery included in the plurality of storage batteries.

0014The acquisition unit acquires information on the type and / or degree of deterioration of the predetermined storage battery by comparing the charge / discharge characteristics of the predetermined storage battery with the charge / discharge pattern for each type and / or degree of deterioration. You may.

0015When a plurality of power sources are available, the charge / discharge control unit uses each of the plurality of storage batteries as each of the plurality of power sources based on the information on the type and / or the degree of deterioration of the plurality of storage batteries. It may be controlled in association with.

0016When the plurality of power sources include a distributed power source and the plurality of storage batteries include a storage battery of a type suitable for supplementary charging, the charge / discharge control unit disperses the storage battery of the type suitable for supplementary charging. It may be controlled in association with the type power supply.

0017When the plurality of power sources include a system power source and the plurality of storage batteries include a storage battery of a type unsuitable for supplementary charging, the charge / discharge control unit uses the storage battery of a type unsuitable for supplementary charging as the system power source. It may be controlled in association with.

0018The charge / discharge control unit may determine the association between each of the plurality of storage batteries and each of the plurality of power sources for each time zone.

0019The charge / discharge control unit may set the charge / discharge priority of each of the plurality of storage batteries based on the information on the degree of deterioration of each of the plurality of storage batteries.

0020When the plurality of storage batteries include a storage battery of a type suitable for supplementary charging and a storage battery of a type not suitable for supplementary charging, the charge / discharge control unit discharges the storage battery of a type unsuitable for supplementary charging. The discharge of the storage battery of the type unsuitable for supplementary charging may be prioritized over the discharge of the storage battery of the type suitable for supplementary charging.

0021The control system of the present invention is a control system for controlling a plurality of storage batteries provided to a consumer of electric power, and includes an acquisition unit for acquiring information on each type and / or deterioration degree of the plurality of storage batteries, and the plurality of storage batteries. It is characterized by having a charge / discharge control unit that controls the charge / discharge of each of the plurality of storage batteries based on the information of the type and / or the degree of deterioration of each of the storage batteries.

0022The power control method of the present invention is a storage battery control method applied to a control system for controlling a plurality of storage batteries provided in a power consumer, and provides information on the type and / or degree of deterioration of each of the plurality of storage batteries. It is characterized by having a step A to be acquired and a step B to control the charge / discharge of each of the plurality of storage batteries based on the information of the type and / or the degree of deterioration of each of the plurality of storage batteries.

0023According to the present invention, it is possible to provide a control device, a control system, and a storage battery control method capable of efficiently controlling a plurality of storage batteries provided in a consumer.

0024<figref num="1">FIG. 1 is a block diagram of a control system according to an embodiment.</figref><figref num="2">FIG. 2 is a block diagram of the HEMS according to the embodiment.</figref><figref num="3">FIG. 3 shows an example of storage battery information according to the embodiment.</figref><figref num="4">FIG. 4 is an operation flow diagram of the storage battery information acquisition operation in the HEMS according to the embodiment.</figref><figref num="5">FIG. 5 is an operation flow diagram of the charge / discharge control operation in the HEMS according to the embodiment.</figref><figref num="6">FIG. 6 is a diagram for explaining a specific example of the charge / discharge schedule according to the embodiment.</figref>

0025With reference to the drawings, embodiments of the present invention will be described in the order of (1) overall configuration, (2) configuration of HEMS, (3) operation of HEMS, (4) summary, and (5) other embodiments. In the drawings according to the following embodiments, the same or similar parts are designated by the same or similar reference numerals.

0026(1) Overall configuration FIG. 1 is a block diagram of a control system according to the present embodiment. In FIG. 1, solid lines between blocks indicate power lines and dashed lines between blocks indicate control lines. The control line may be wireless.

0027As shown in FIG. 1, the control system according to the present embodiment includes a system power supply 1, a plurality of storage batteries 10, a distributed power source 20, one or more load devices 30, a distribution board 40, and a HEMS 100. , Have. The plurality of storage batteries 10 form a storage battery group.

0028The storage battery 10, the distributed power source 20, the load device 30, the distribution board 40, and the HEMS 100 are installed in the house H as a consumer who receives power from the grid power source 1.

0029The grid power supply 1 is an example of a power supply. The grid power supply 1 is managed by the electric power company and supplies electric power to the house H. The grid power supply 1 can always supply stable power to the house H as long as a power failure does not occur.

0030In general, the charge for the electric power supplied from the grid power supply 1 to the house H is set cheaper at midnight when the electric power demand is low than at other times.

0031The storage battery 10 is charged by the electric power input through the distribution board 40. The storage battery 10 supplies electric power to the load device 30 via the distribution board 40 by discharging the battery 10. Each charge / discharge of the storage battery 10 is controlled by the HEMS 100.

0032In the present embodiment, the storage batteries 10 are not unified with the same type of storage batteries, and different types of storage batteries are mixed. For example, the storage battery 10-1 is a type of storage battery suitable for supplementary charging, and the storage battery 10-2 is a type of storage battery unsuitable for supplementary charging.

0033The "type of storage battery suitable for supplementary charging" is a storage battery in which performance deterioration due to the memory effect or the like is unlikely to occur even if charging (so-called rechargeable charging) is performed before the stored power is completely discharged. Examples of such a storage battery include a lithium ion battery and the like.

0034On the other hand, the "type of storage battery that is not suitable for supplementary charging" is a storage battery that tends to deteriorate in performance due to the memory effect or the like when recharged. Examples of such a storage battery include a nickel cadmium battery, a nickel hydrogen battery, and a lead storage battery.

0035The storage battery 10 may have a function of managing information about itself (for example, type, number of days used, capacity, number of charges, and number of discharges).

0036The distributed power source 20 is an example of a power source. Here, the distributed power source 20 means a power generation device that supplies electric power to the load device 30 and / or the storage battery 10 via the distribution board 40 by generating electric power. The distributed power source 20 may be a type of distributed power source whose power generation amount can be controlled, or may be a type of distributed power source whose power generation amount cannot be controlled.

0037The "distributed power source of a type in which the amount of power generation can be controlled" is a distributed power source that generates power using gas or the like, and is a fuel such as SOFC (Solid Oxide Fuel Cell) or PEFC (Polymer Electrolyte Fuel Cell). Includes batteries, gas turbine generators, etc. Load tracking control that increases or decreases the amount of power generation according to the increase or decrease in the power consumption of the load device 30 is usually applied to such a distributed power source. However, such a distributed power source cannot change the amount of power generation rapidly, and an excess or deficiency may occur with respect to the power consumption of the load device 30.

0038On the other hand, the "distributed power source of a type in which the amount of power generation cannot be controlled" is a distributed power source that generates power using natural energy (renewable energy), and includes, for example, a solar cell and a wind power generator. .. Such a distributed power source can cause the generated power to reverse power flow (so-called power sale) to the system power supply 1. However, load tracking control cannot be applied to such distributed power sources.

0039The load device 30 operates by consuming the electric power input through the distribution board 40. The load device 30 is, for example, a home electric appliance (refrigerator, air conditioner, lighting, etc.) provided in the house H.

0040The distribution board 40 supplies the electric power from the system power supply 1 to the load device 30 and the storage battery 10. Further, the distribution board 40 supplies the electric power from the storage battery 10 to the load device 30, and supplies the electric power from the distributed power source 20 to the load device 30 and the storage battery 10. Further, when the distributed power source 20 is a distributed power source that generates power using natural energy (renewable energy), the distribution board 40 reverse-flows the power generated by the distributed power source 20 to the system power source 1. You may let me.

0041The distribution board 40 changes the internal wiring state according to the control of the HEMS 100. For example, the distribution board 40 can electrically connect / disconnect any storage battery 10 to the distributed power source 20 or electrically connect / disconnect any storage battery 10 to the grid power source 1. ..

0042In this embodiment, the distribution board 40 includes a sensor 41 for measuring various electric powers. The distribution board 40 notifies the HEMS 100 of the power information detected by the sensor 41. The sensor 41 detects, for example, the amount of power purchased from the system power source 1, the amount of power sold to the system power source 1, the amount of power generated by the distributed power source 20, and the amount of charge / discharge power of the storage battery 10.

0043The HEMS 100 communicates with each of the storage battery 10, the distributed power source 20, the load device 30, and the distribution board 40, and controls each of the storage battery 10, the distributed power source 20, the load device 30, and the distribution board 40. The HEMS 100 will be described below.

0044(2) HEMS configuration FIG. 2 is a block diagram of the HEMS 100.

0045As shown in FIG. 2, the HEMS 100 includes a display unit 110, an input unit 120, a communication unit 130, a storage unit 140, and a control unit 150.

0046The display unit 110 performs various displays under the control of the control unit 150. The input unit 120 receives the input from the user and outputs the input contents to the control unit 150. The display unit 110 and the input unit 120 may be integrated as a touch panel.

0047Under the control of the control unit 150, the communication unit 130 communicates with each device (storage battery 10, distributed power source 20, load device 30, and distribution board 40) provided in the house H. The communication unit 130 may be a Zigbee (registered trademark) module for wireless communication with each device provided in the house H.

0048The storage unit 140 stores various types of information used for control by the control unit 150. Further, the storage unit 140 stores information about the storage battery 10 (hereinafter, referred to as storage battery information). The storage battery information includes information on the types of storage batteries 10 (for example, lithium ion or lead). Further, the storage battery information may include information on the degree of deterioration of the storage battery 10 (for example, the number of days of use, the number of times of charging, and the number of times of discharging). Further, the storage battery information may include information on the capacity of the storage battery 10.

0049FIG. 3 shows an example of storage battery information stored in the storage unit 140. As shown in FIG. 3, as the storage battery information for the storage battery A, the type "lithium ion", the number of days used "150 days", the capacity "2kWh", the number of times of charging "100 times", and the number of times of discharging "120 times" are stored. ing. This information is also stored in other storage batteries.

0050The control unit 150 includes an information acquisition unit 151, an information management unit 152, a schedule determination unit 153, and a storage battery control unit 154.

0051The information acquisition unit 151 acquires the storage battery information of the storage battery 10 by using the communication unit 130. In the present embodiment, when the storage battery 10 is newly installed in the house H, the information acquisition unit 151 acquires the storage battery information of the newly installed storage battery 10 and stores the acquired storage battery information in the storage unit 140. Remember.

0052The information acquisition unit 151 acquires the storage battery information of the newly installed storage battery 10 by communicating with the newly installed storage battery 10 using the communication unit 130. Here, when the storage battery 10 is newly installed in the house H and connected to the HEMS 100, the storage battery 10 may transmit its own storage battery information to the information acquisition unit 151 in a format compliant with a communication protocol such as Echonet Lite. .. After receiving the storage battery information from the storage battery 10, the information acquisition unit 151 may request the storage battery 10 to further transmit the necessary storage battery information. In this case, it is premised that the newly installed storage battery 10 manages its own storage battery information.

0053When the newly installed storage battery 10 does not manage its own storage battery information, the information acquisition unit 151 measures the charge / discharge characteristics of the newly installed storage battery 10 by using the communication unit 130. Acquires the storage battery information of the newly installed storage battery 10. For example, the information acquisition unit 151 periodically acquires the charge / discharge power detected by the sensor 41 while instructing the newly installed storage battery 10 to charge / discharge using the communication unit 130. Measure the charge / discharge characteristics of the newly installed storage battery 10. Further, the storage unit 140 stores the charge / discharge characteristic pattern for each type of the storage battery in advance, and the information acquisition unit 151 compares the charge / discharge characteristic measured for the storage battery 10 with each charge / discharge characteristic pattern. , Estimate the type of the storage battery 10. Further, if each charge / discharge characteristic pattern is classified according to the degree of deterioration, the degree of deterioration of the storage battery 10 can be estimated.

0054The information management unit 152 manages the storage battery information (see FIG. 3) for each storage battery 10 stored in the storage unit 140. For example, the information management unit 152 updates the number of days of use for each storage battery 10 according to the passage of days, updates the number of charges according to the execution of charging, and updates the number of discharges according to the execution of discharge.

0055Based on the storage battery information managed by the information management unit 152, the schedule determination unit 153 charges and discharges the charge / discharge schedule of each storage battery 10 at predetermined periods (for example, one day) (hereinafter, appropriately referred to simply as "schedule"). To determine. The charge / discharge schedule means a schedule of which storage battery 10 charges / discharges in which time zone and in which mode. The charge / discharge mode of the storage battery 10 will be described later.

0056In the present embodiment, the schedule determination unit 153 associates each of the plurality of storage batteries 10 with each of the plurality of power sources (system power source 1 and distributed power source 20) based on the storage battery information of each storage battery 10, and schedules the schedule. To determine.

0057First, the schedule determination unit 153 determines the schedule by associating the storage battery 10 of a type suitable for supplementary charging with the distributed power source 20. As described above, the distributed power source 20 can frequently have excess or deficiency of generated power. Therefore, the schedule determination unit 153 associates the storage battery 10 of a type suitable for supplementary charging with the distributed power source 20, and determines the schedule so as to offset the excess or deficiency. As a result, the amount of power purchased from the grid power supply 1 can be reduced, or the amount of power sold to the grid power supply 1 can be increased.

0058Second, the schedule determination unit 153 determines the schedule by associating the storage battery 10 of a type unsuitable for supplementary charging with the system power supply 1. As described above, the system power supply 1 can basically always supply stable power. Therefore, the schedule determination unit 153 associates the storage battery 10 of a type unsuitable for supplementary charging with the system power supply 1, puts the storage battery 10 in a fully charged state, and then discharges all the power from the storage battery 10. Determine the schedule. As a result, for example, the storage battery 10 can be fully charged by the inexpensive system power at midnight, and all the power can be discharged from the storage battery 10 at other times.

0059Third, the schedule determination unit 153 sets the charge / discharge priority for each storage battery 10 according to the degree of deterioration of each storage battery 10 (for example, the number of days of use, the number of charges, and the number of discharges). For example, when there are a plurality of storage batteries 10 of the same type, the priority for the storage battery 10 having a low degree of deterioration is set to "high" (main), and the priority for the storage battery 10 having a high degree of deterioration is set to "low" (backup). To do. As a result, the degree of deterioration of these storage batteries 10 can be leveled, and the life of the storage battery group can be extended. Alternatively, the priority for the storage battery 10 having a low degree of deterioration is set to "low" (backup), and the priority for the storage battery 10 having a high degree of deterioration is set to "high" (main). As a result, the deteriorated storage battery 10 can be used up and replaced at an early stage, and the performance of the storage battery group can be improved.

0060The storage battery control unit 154 controls each storage battery 10 according to the schedule determined by the schedule determination unit 153. Specifically, the storage battery control unit 154 uses the communication unit 130 to transmit a charge / discharge instruction to each storage battery 10 and a connection state change instruction to the distribution board 40. Various instructions are transmitted using signals conforming to communication protocols such as Lite or ZigBee.

0061The storage battery control unit 154 may change the schedule as appropriate when it becomes necessary to change the schedule according to the amount of electricity stored in the storage battery 10 and the amount of power consumed by the load device 30.

0062The storage battery control unit 154 may control the display unit 110 so as to display charge / discharge schedule information (see FIG. 4). Further, the schedule may be changed according to the user input to the input unit 120.

0063(3) Operation of HEMS The operation of the HEMS 100 will be described below.

0064(3.1) Storage battery information acquisition operation FIG. 4 is an operation flow diagram of the storage battery information acquisition operation in the HEMS 100.

0065As shown in FIG. 4, in step S11, the information acquisition unit 151 confirms whether or not the storage battery 10 newly installed in the house H has been detected. If the newly installed storage battery 10 is detected (step S11; YES), the process proceeds to step S12.

0066In step S12, the information acquisition unit 151 confirms whether or not the storage battery information can be acquired from the newly installed storage battery 10, that is, whether or not the storage battery 10 manages its own storage battery information. If the storage battery information can be obtained from the newly installed storage battery 10 (step S12; YES), the process proceeds to step S13. On the other hand, when the storage battery information cannot be acquired from the newly installed storage battery 10 (step S12; NO), the process proceeds to step S14.

0067In step S13, the information acquisition unit 151 acquires the storage battery information from the newly installed storage battery 10 and stores the acquired storage battery information in the storage unit 140.

0068On the other hand, in step S14, the information acquisition unit 151 measures the charge / discharge characteristics of the newly installed storage battery 10.

0069In step S15, the information acquisition unit 151 acquires the storage battery information of the newly installed storage battery 10 based on the charge / discharge characteristics measured in step S14, and stores the acquired storage battery information in the storage unit 140.

0070(3.2) Charge / discharge control operation FIG. 5 is an operation flow diagram of the charge / discharge control operation in the HEMS 100. This operation flow assumes a case where the schedule is determined on a daily basis, for example.

0071As shown in FIG. 5, in step S21, the schedule determination unit 153 confirms whether or not the current time is the time for which the schedule should be determined. If the current time is the time for which the schedule should be determined (step S21; YES), the process proceeds to step S22.

0072In step S22, the schedule determination unit 153 determines the schedule for each storage battery 10 for each time zone in the day based on the storage battery information for each storage battery 10 stored in the storage unit 140. A specific example of the schedule will be described later.

0073In step S23, the storage battery control unit 154 controls each storage battery 10 according to the schedule of the day.

0074In step S24, the storage battery control unit 154 confirms whether or not the schedule for that day has been completed. If the schedule for the day is not completed (step S24; NO), the process proceeds to step S25.

0075In step S25, the storage battery control unit 154 confirms whether or not the schedule for the day needs to be changed. If it is not necessary to change the schedule for the day (step S25; NO), the process returns to step S23. On the other hand, if it is necessary to change the schedule for the day (step S25; YES), the process proceeds to step S26.

0076In step S26, the storage battery control unit 154 changes the schedule for the day. After that, the process returns to step S23.

0077FIG. 6 is a diagram for explaining a specific example of the schedule. Here, a lithium ion battery is exemplified as a storage battery 10 of a type suitable for supplementary charging, and a lead storage battery is exemplified as a storage battery 10 of a type unsuitable for supplementary charging. Further, it is assumed that the lithium ion battery A having a low degree of deterioration and the lithium ion battery B having a high degree of deterioration coexist.

0078As shown in FIG. 6, the schedule determination unit 153 determines the schedule by associating the lithium ion battery A with the distributed power source 20.

0079Specifically, the schedule determination unit 153 cancels out the excess or deficiency of the power generation amount of the distributed power source 20 by using the lithium ion battery A except for the time zone (midnight time zone) when the power consumption of the load device 30 is low. It has been decided to operate in (offset mode).

0080In the offset mode, when the power generation amount of the distributed power source 20 is insufficient with respect to the power consumption of the load device 30, the storage battery control unit 154 controls to discharge the power corresponding to the shortage from the lithium ion battery A. To do. Further, in the offset mode, when the power generation amount of the distributed power source 20 exceeds the power consumption of the load device 30, the storage battery control unit 154 charges the lithium ion battery A with the power corresponding to the excess amount. To control. Here, the storage battery control unit 154 grasps the difference between the power generation amount of the distributed power source 20 and the power consumption amount of the load device 30 from, for example, the measured value of the sensor 41, and controls the charging / discharging of the lithium ion battery A.

0081On the other hand, the schedule determination unit 153 has determined that the lithium-ion battery A is operated in the mode (charging mode) in which the lithium ion battery A is charged by the grid power during the time zone (midnight time zone) when the power consumption of the load device 30 is low. ..

0082In the charging mode, the storage battery control unit 154 controls the lithium ion battery A to be charged with inexpensive system power at midnight. However, if the lithium ion battery A is in a fully charged state at the end of the offset mode, the charge mode may be canceled.

0083Further, the schedule determination unit 153 determines the schedule by associating the lead storage battery with the system power supply 1.

0084Specifically, the schedule determination unit 153 determines to operate in a mode (charging mode) in which the lead-acid battery is charged to a fully charged state by system power in a time zone (midnight time zone) when the power consumption of the load device 30 is low. However, at other times, it has been decided to operate in a mode (discharge mode) in which all power is discharged from the lead-acid battery.

0085In the charging mode, the storage battery control unit 154 controls the lead storage battery to be charged with inexpensive system power at midnight. On the other hand, in the discharge mode, when the power generation amount of the distributed power source 20 is insufficient with respect to the power consumption of the load device 30, the storage battery control unit 154 discharges the power corresponding to the shortage from the lead storage battery. Control. In the case where both the lithium ion battery A and the lead storage battery can be discharged, it is preferable to preferentially discharge the lead storage battery in order to reduce the storage capacity of the lead storage battery to zero.

0086Further, the schedule determination unit 153 determines the schedule by associating the lithium ion battery B with the distributed power source 20. Here, the schedule determination unit 153 sets the mode (backup mode) in which the priority for the lithium ion battery B is low (backup) because the degree of deterioration of the lithium ion battery B is high.

0087In the backup mode, the storage battery control unit 154 controls to use the lithium ion battery B as a backup for the lithium ion battery A. For example, the storage battery control unit 154 controls the lithium ion battery B to charge instead of the lithium ion battery A after the lithium ion battery A is fully charged. Further, when the stored amount of the lithium ion battery A falls below a predetermined lower limit value, or when an abnormality occurs in the lithium ion battery A, the storage battery control unit 154 uses the lithium ion battery instead of the lithium ion battery A. You may change B to operate in offset mode.

0088(4) Summary As described above, the HEMS 100 that controls a plurality of storage batteries 10 provided in a house controls charge / discharge for each of the plurality of storage batteries 10 based on the storage battery information of each of the plurality of storage batteries 10. As a result, the plurality of storage batteries 10 can be efficiently controlled.

0089In the present embodiment, the HEMS 100 acquires the storage battery information of the newly installed storage battery 10 by communicating with the newly installed storage battery 10. Alternatively, the HEMS 100 acquires the storage battery information of the newly installed storage battery 10 by measuring the charge / discharge characteristics of the newly installed storage battery 10. As a result, the HEMS 100 can automatically acquire the storage battery information.

0090In the present embodiment, the HEMS 100 controls a storage battery 10 of a type suitable for supplementary charging in association with a distributed power source 20. As a result, the excess or deficiency of the generated power of the distributed power source 20 can be offset. As a result, the amount of power purchased from the grid power supply 1 can be reduced, or the amount of power sold to the grid power supply 1 can be increased.

0091In the present embodiment, the HEMS 100 controls the storage battery 10 of a type unsuitable for supplementary charging in association with the system power supply 1. As a result, the storage battery 10 can be fully charged by the inexpensive system power at midnight, and all the power can be discharged from the storage battery 10 at other times. As a result, the electricity charge in the house H can be reduced.

0092In the present embodiment, the HEMS 100 determines the association between each of the plurality of storage batteries 10 and each of the plurality of power sources for each time zone. As a result, the plurality of storage batteries 10 can be efficiently controlled in consideration of the electricity charge and the power consumption.

0093In the present embodiment, the HEMS 100 sets the charge / discharge priority for each of the plurality of storage batteries 10 based on the information on the degree of deterioration of each of the plurality of storage batteries 10. As a result, the degree of deterioration of the storage battery group can be leveled, and the performance of the storage battery group can be improved.

0094(5) Other embodiments As mentioned above, the present invention has been described by embodiment, but the statements and drawings that form part of this disclosure should not be understood to limit the invention. Various alternative embodiments, examples and operational techniques will be apparent to those skilled in the art from this disclosure.

0095For example, a storage battery mounted on an electric vehicle can be regarded as one storage battery constituting a storage battery group when the electric vehicle is not in use.

0096Further, in the above-described embodiment, in the charging mode, the storage battery control unit 154 controls the storage battery 10 to be charged with inexpensive system power at midnight. However, in the charging mode, the storage battery control unit 154 may control the storage battery 10 to charge the generated power of the distributed power source 20.

0097Further, in the above-described embodiment, the HEMS 100, which is a control device for performing power management in units of houses, has been described, but BEMS (Building Energy Manegement System) for buildings and FEMS (Factory Energy Manegement) for factories have been described. System) or CEMS (Community Energy Management System) for the region may be used.

0098As described above, it goes without saying that the present invention includes various embodiments not described here. In addition, the above-described embodiments and modifications can be combined. Therefore, the technical scope of the present invention is defined only by the matters specifying the invention according to the reasonable claims from the above description.

0099The entire contents of Japanese Patent Application No. 2012-040684 (filed on February 27, 2012) are incorporated in this application by reference.

0100According to the present invention, it is possible to provide a control device, a control system, and a storage battery control method capable of efficiently controlling a plurality of storage batteries provided in a consumer.