Control device, method, computer program and readable storage medium

Abstract

This technology provides a method for controlling the temperature of multiple energy storage devices with different degradation states to suppress the occurrence of flow saturation in vehicles. [Solution] The control device includes a charging unit that charges a plurality of energy storage devices, including a first energy storage device and a second energy storage device, and a temperature control unit that adjusts the temperature of at least one of the first energy storage device and the second energy storage device. The control unit controls at least one of these units.

Description

TECHNICAL FIELD

[0001] The present invention relates to a control device, a method, a computer program, and a readable storage medium.

BACKGROUND ART

[0002] Conventionally, a service for lending a plurality of power storage devices provided in a battery storage device to a user is known. The battery storage device in this service can perform control to equalize the temperatures of the plurality of power storage devices.

PRIOR ART DOCUMENTS

PATENT DOCUMENTS

[0003]

PATENT DOCUMENT 1

PATENT DOCUMENT 2

PATENT DOCUMENT 3

SUMMARY OF THE INVENTION

PROBLEMS TO BE SOLVED BY THE INVENTION

[0004] However, in the battery storage device, power storage devices in various degradation states are stored. When a plurality of power storage devices having different degradation states are supplied from the battery storage device to the same vehicle, there is a risk of unbalanced current occurring in the vehicle to which they are supplied. Even if control is performed so that the temperatures of the plurality of power storage devices supplied to the vehicle are equalized, the unbalanced current cannot be suppressed.

[0005] The present disclosure aims to provide a control device, a method, a computer program, and a readable storage medium that manipulate the temperatures of a plurality of power storage devices having different degradation states to suppress the occurrence of unbalanced current in a vehicle.

MEANS FOR SOLVING THE PROBLEMS

[0006] (1) A charging unit that charges a plurality of energy storage devices including a first energy storage device and a second energy storage device (for example, energy storage device 2 described later), and a temperature control unit that controls at least one of the temperature of at least one of the first energy storage device and the second energy storage device, (for example, control unit 11 described later), An acquisition unit (for example, acquisition unit 111 described later) that acquires internal resistance information, which is information regarding the internal resistance of the first energy storage device and the second energy storage device, Equipped with, A control device which controls at least one of the charging unit and the temperature control unit, based on the first internal resistance information, which is the internal resistance information of the first energy storage device, and the second internal resistance information, which is the internal resistance information of the second energy storage device, acquired by the acquisition unit, so as to reduce the difference between the first internal resistance, which is the internal resistance of the first energy storage device, and the second internal resistance, which is the internal resistance of the second energy storage device.

[0007] According to (1) above, when the first and second energy storage devices are provided to the user, the internal resistances of the first and second energy storage devices are adjusted to be approximately the same. In this case, the occurrence of current deviation in the vehicle can be suppressed. Furthermore, measures against current deviation and return current on the vehicle side become unnecessary. In addition, it is possible to increase the maximum output of the vehicle and to increase the number of parallel energy storage devices. Moreover, when used in the electric motor 400, the current values ​​of all energy storage devices are the same, so the degree of degradation is made uniform, and the lifespan of the entire energy storage device can be extended.

[0008] (2) The acquisition unit further acquires information regarding the degree of deterioration of the first energy storage device and the second energy storage device, The control device according to (1), wherein if the first degree of degradation of the first energy storage device acquired by the acquisition unit is different from the second degree of degradation of the second energy storage device acquired by the acquisition unit, the control unit controls at least one of the charging unit and the temperature control unit based on the first internal resistance information and the second internal resistance information acquired by the acquisition unit, so as to reduce the difference between the first internal resistance and the second internal resistance.

[0009] According to (2) above, even when multiple energy storage devices with different deterioration states are provided to the same vehicle, the occurrence of current saturation in the vehicle can be suppressed.

[0010] (3) The acquisition unit further acquires the temperature of the first energy storage device and the second energy storage device, The control device according to (2), wherein if the first degree of degradation acquired by the acquisition unit is different from the second degree of degradation acquired by the acquisition unit, the control unit controls at least one of the charging unit and the temperature control unit so that the temperature conditions for the first and second energy storage devices are satisfied such that the first internal resistance of the first energy storage device and the second internal resistance of the second energy storage device are substantially the same, thereby changing the first temperature of the first energy storage device acquired by the acquisition unit and the second temperature of the second energy storage device acquired by the acquisition unit.

[0011] According to (3) above, the same effect as in (2) above can be obtained.

[0012] (4) The control unit, Based on the first degree of degradation and the second degree of degradation, a first target temperature at the time of charging completion of the first energy storage device and a second target temperature at the time of charging completion of the second energy storage device are set. The control device according to (3), which controls at least one of the charging unit and the temperature control unit so that the temperature condition is met in which the first internal resistance and the second internal resistance are substantially the same, thereby adjusting the first temperature to a first target temperature and adjusting the second temperature to a second target temperature.

[0013] According to (4) above, the same effect as in (3) above can be obtained.

[0014] (5) The control unit, Based on the first degree of degradation and the second degree of degradation, the target internal resistance values ​​of the first energy storage device and the second energy storage device are set. The control device according to (3), which controls at least one of the charging unit and the temperature control unit to change the first temperature and the second temperature so that the first internal resistance and the second internal resistance become the target internal resistance value.

[0015] According to (5) above, the same effect as in (3) above can be obtained.

[0016] (6) The control device according to any one of (1) to (5), wherein the temperature control unit is a heating unit or a cooling unit.

[0017] According to (6) above, the same effect as in (1) above can be obtained.

[0018] (7) The acquisition unit further acquires voltage information, which is information relating to the voltages of the first energy storage device and the second energy storage device, respectively. The control unit, A control device according to any one of (1) to (6), wherein, based on the first voltage information which is the voltage information of the first energy storage device acquired by the acquisition unit and the second voltage information which is the voltage information of the second energy storage device, the device controls at least one of the charging unit and the temperature control unit so that the difference between the first voltage which is the voltage of the first energy storage device and the second voltage which is the voltage of the second energy storage device becomes smaller.

[0019] According to the above (7), the same effect as the above (1) can be obtained.

[0020] (8) The control device further comprises an extraction unit (for example, an extraction unit 112 to be described later) that extracts the power storage devices to be provided to the user from the plurality of power storage devices in response to a request from the user, The extraction unit simultaneously extracts, from the plurality of power storage devices, the first power storage device having the first internal resistance and the second power storage device having the second internal resistance that is substantially the same as the first internal resistance.

[0021] According to the above (8), the internal resistances of the first power storage device and the second power storage device provided to the user are substantially the same. At this time, occurrence of drift current in the vehicle can be suppressed. Further, countermeasures against drift current or circulating current on the vehicle side become unnecessary. In addition, it is possible to increase the maximum output in the vehicle and increase the number of parallel-connected power storage devices. Further, during use in the electric device 400, since the current values of all the power storage devices are uniform, the degree of deterioration is equalized, and the service life of the entire power storage device can be extended.

[0022] (9) The acquisition unit further acquires information related to the degree of deterioration of each of the plurality of power storage devices and the temperature of each of the plurality of power storage devices, The extraction unit simultaneously extracts, from the plurality of power storage devices, the first power storage device having the first deterioration degree and the second power storage device having the second deterioration degree that is substantially the same as the first deterioration degree, the control device according to (8).

[0023] According to the above (9), the same effect as the above (8) can be obtained.

[0024] (10) The storage device further comprises a charging unit configured to be capable of charging the plurality of power storage devices, The control device changes the first temperature and the second temperature using heating associated with charging by the charging unit, the control device according to (9).

[0025] According to (10) above, the same effect as in (9) above can be obtained.

[0026] (11) The storage device further comprises a temperature control unit, the temperature control unit being a heating unit or a cooling unit, The control device according to (9) or (10), wherein the control device changes the first temperature and the second temperature using the heating unit or the cooling unit.

[0027] According to (11) above, the same effect as in (9) above can be obtained.

[0028] (12) The control device is Based on the first degree of degradation and the second degree of degradation, a first target temperature at the time of charging completion of the first energy storage device and a second target temperature at the time of charging completion of the second energy storage device are set. A control device according to any one of (9) to (11), which adjusts the first temperature to a first target temperature and the second temperature to a second target temperature so that the temperature condition is met in which the first internal resistance and the second internal resistance are substantially the same.

[0029] According to (12) above, the same effect as in (9) above can be obtained.

[0030] (13) The control device is Based on the first degree of degradation and the second degree of degradation, the target internal resistance values ​​of the first energy storage device and the second energy storage device are set. A control device according to any one of (9) to (12), wherein the first temperature and the second temperature are changed so that the first internal resistance and the second internal resistance become the target internal resistance value.

[0031] According to (13) above, the same effect as in (9) above can be obtained.

[0032] (14) The control device according to (13), wherein the target internal resistance value is set to minimize power loss in the storage device.

[0033] According to (14) above, it is possible to prevent the wasteful use of electricity by a storage device equipped with a heating unit or a cooling unit.

[0034] (15) Changing the first temperature of the first energy storage device acquired by the acquisition unit and the second temperature of the second energy storage device acquired by the acquisition unit so that the above temperature conditions are met is: When the first internal resistance and the second internal resistance are different, The energy storage device corresponding to the higher of the first internal resistance and the second internal resistance is heated, or the energy storage device corresponding to the lower of the first internal resistance and the second internal resistance is cooled. The control device described in (9), including the following:

[0035] According to (15) above, the same effect as in (9) above can be obtained.

[0036] (16) A control device for controlling a storage device for a plurality of energy storage devices, including a first energy storage device and a second energy storage device, An acquisition unit that acquires information regarding the degree of deterioration of the first energy storage device and the second energy storage device, and the temperature of the first energy storage device and the second energy storage device, Equipped with, The control device is If the first degree of deterioration of the first energy storage device acquired by the acquisition unit is different from the second degree of deterioration of the second energy storage device acquired by the acquisition unit, The first temperature of the first energy storage device and the second temperature of the second energy storage device acquired by the acquisition unit are modified so that the first internal resistance of the first energy storage device and the second internal resistance of the second energy storage device are substantially the same when the first energy storage device and the second energy storage device are provided for use simultaneously. Control device.

[0037] According to (16) above, the same effect as in (9) above can be obtained.

[0038] (17) A step of controlling at least one of the following: a charging unit that charges a plurality of energy storage devices including a first energy storage device and a second energy storage device, and a temperature control unit that adjusts the temperature of at least one of the first energy storage device and the second energy storage device; A step of acquiring internal resistance information, which is information relating to the internal resistance of the first energy storage device and the second energy storage device, Includes, The control step includes a step of controlling at least one of the charging unit and the temperature control unit based on the first internal resistance information, which is the internal resistance information of the first energy storage device, and the second internal resistance information, which is the internal resistance information of the second energy storage device, so as to reduce the difference between the first internal resistance, which is the internal resistance of the first energy storage device, and the second internal resistance, which is the internal resistance of the second energy storage device.

[0039] According to (17) above, the same effect as in (1) above can be obtained.

[0040] (18) A method for controlling a storage device for a plurality of energy storage devices, including a first energy storage device and a second energy storage device, A step of obtaining information regarding the degree of deterioration of the first energy storage device and the second energy storage device, and the temperature of the first energy storage device and the second energy storage device, When the first degree of degradation of the first energy storage device and the second degree of degradation of the second energy storage device are different, a step of changing the first temperature of the first energy storage device and the second temperature of the second energy storage device so that the first internal resistance of the first energy storage device and the second internal resistance of the second energy storage device are substantially the same when the first energy storage device and the second energy storage device are provided for simultaneous use, Methods that include...

[0041] According to (18) above, the same effect as in (16) above can be obtained.

[0042] (19) The processor of the control unit, A charging unit that charges a plurality of energy storage devices, including a first energy storage device and a second energy storage device, and a temperature control unit that controls at least one of the temperature of at least one of the first energy storage device and the second energy storage device, An acquisition unit that acquires internal resistance information, which is information relating to the internal resistance of the first energy storage device and the second energy storage device, and make it work A computer program that controls at least one of the charging unit and the temperature control unit, based on the first internal resistance information, which is the internal resistance information of the first energy storage device, and the second internal resistance information, which is the internal resistance information of the second energy storage device, acquired by the acquisition unit, so as to reduce the difference between the first internal resistance, which is the internal resistance of the first energy storage device, and the second internal resistance, which is the internal resistance of the second energy storage device.

[0043] According to (19) above, the same effect as in (1) above can be obtained.

[0044] (20) A processor for a control device for controlling a storage device for a plurality of energy storage devices, including a first energy storage device and a second energy storage device, It functions as an acquisition unit that acquires information regarding the degree of deterioration of the first and second energy storage devices, and the temperatures of the first and second energy storage devices, respectively. The control device is If the first degree of deterioration of the first energy storage device acquired by the acquisition unit is different from the second degree of deterioration of the second energy storage device acquired by the acquisition unit, The first temperature of the first energy storage device and the second temperature of the second energy storage device acquired by the acquisition unit are modified so that the first internal resistance of the first energy storage device and the second internal resistance of the second energy storage device are substantially the same when the first energy storage device and the second energy storage device are provided for use simultaneously. Computer program.

[0045] According to (20) above, the same effect as in (16) above can be obtained.

[0046] (21) A readable storage medium storing a computer program as described in any of (19) to (20).

[0047] According to (21) above, the same effect as in (1), (8), or (16) can be obtained. [Effects of the Invention]

[0048] According to the present invention, when multiple energy storage devices with different degradation states are provided in the same vehicle, the occurrence of current drift in the vehicle can be suppressed. [Brief explanation of the drawing]

[0049] [Figure 1] This figure shows an example of a battery sharing service system according to the first embodiment. [Figure 2] This figure shows the relationship between temperature and internal resistance of energy storage devices with different degrees of degradation. [Figure 3] This is a diagram showing the configuration of the control device according to the first embodiment. [Figure 4] This figure shows the processing flow executed by the control device according to the first embodiment. [Figure 5] This figure shows the time variation of each data in the energy storage device according to the first embodiment. [Figure 6] This figure shows the processing flow executed by the control device according to the second embodiment. [Modes for carrying out the invention]

[0050] Each embodiment will be described below with reference to the drawings. Note that, for illustrative purposes, some components may be omitted from the drawings used to describe each embodiment. Furthermore, in the drawings and this specification, the same reference numerals indicate the same elements.

[0051] <First Embodiment> (Battery sharing service system) Figure 1 shows an example of a battery sharing service system 100 according to the first embodiment.

[0052] The battery share service system 100 includes a control device 10 and a server 300. The control device 10 is provided, for example, in one storage device 200. As shown in Figure 1, the control device 10 may be provided in one or more housings 1 of the storage device 200 (in Figure 1, housing 1c). The control device 10 controls the operation of the storage device 200. The control device 10 is connected to the storage device 200 by wire or wireless. The control device 10 may be configured as a single device rather than as a separate device from the storage device 200.

[0053] The storage device 200 comprises one or more enclosures 1. In Figure 1, one storage device 200 comprises three enclosures 1a, 1b, and 1c. When the storage device 200 comprises multiple enclosures, these enclosures are physically and / or electrically connected to each other. Even if the multiple enclosures are not physically and / or electrically connected, they may constitute a single storage device 200 if they are understood to belong to the same station.

[0054] The housing 1 is a device for storing energy storage devices 2. The housing 1 has one or more slots SL in which energy storage devices 2 can be accommodated and stored. In the example shown in Figure 1, one housing 1 has 12 slots SL. The slots SL detachably hold the energy storage devices 2. Each slot SL is equipped with a temperature acquisition device that acquires the temperature of the housed energy storage device 2. The temperature acquisition device may be any temperature sensor. Each slot SL is equipped with a temperature control unit for adjusting the temperature of the housed energy storage device 2. The temperature control unit is either a cooling unit for cooling the energy storage device 2 or a heating unit for heating the energy storage device 2. The cooling unit is, for example, a cooling fan. The heating unit is, for example, a heater.

[0055] The housing 1 is a device for charging and / or discharging the energy storage devices 2. The housing 1 can simultaneously charge multiple energy storage devices 2 (up to 12 energy storage devices 2 in the example shown in Figure 1) housed in multiple slots SL. "Simultaneous charging" is not limited to cases where charging of multiple energy storage devices 2 is started at the same time, but also includes cases where part of the charging time of a particular energy storage device 2 overlaps with part of the charging time of another energy storage device 2. The energy storage devices 2 housed in slots SL are charged by a charging unit (also referred to as a "charging device") associated with that slot SL. The charging unit includes, for example, at least one of a power converter, an AC / DC converter, and a DC / DC converter.

[0056] The enclosure 1 is connected to an external power supply 500. The external power supply 500 is, for example, a 100V AC commercial power supply. The power supplied from the external power supply 500 is used to charge the energy storage device 2 housed in slot SL.

[0057] If a fully charged energy storage device 2 exists within the enclosure 1, the enclosure 1 sends a notification to the control device 10 indicating the presence of a fully charged energy storage device 2 within the enclosure 1. As a result, the control device 10 recognizes the energy storage device 2 that can be provided to user P (also referred to as "user").

[0058] When a user P who wishes to exchange (i.e., receive and be provided with) a power storage device 2 visits the storage device 200, the control device 10 controls the provision of multiple fully charged power storage devices 2 from the housing 1 to user P. For example, the control device 10 authenticates the user using the authentication unit 210 described later. The extraction unit 112 of the control device 10, described later, extracts two power storage devices 2 that it has determined are available to the user. The control device 10 shows the user the locations of the two slots SL in which the two extracted power storage devices 2 are housed by displaying them on a display unit (for example, included in the authentication unit 210) (see, for example, Figure 20 of Patent Document 2). The user confirms the locations of the two slots SL shown on the display unit and obtains the two charged power storage devices 2 housed in the two slots, as shown in Figure 1. User P loads the two power storage devices 2 into the storage compartment of the electric motor 400, which is driven by the power supplied from the power storage devices 2, and uses them.

[0059] The provision of the energy storage device 2 by the storage device 200 can also be described as the acquisition of the energy storage device 2 by the user. The receipt of the energy storage device 2 by the storage device 200 can also be described as the storage of the energy storage device 2 by the user.

[0060] If the storage device 200 is used for sharing the energy storage device 2 among multiple users, the provision of the energy storage device 2 to users in the storage device 200 may be described as the borrowing of the energy storage device 2 by the users. Furthermore, the receipt of the energy storage device 2 from users in the storage device 200 may be described as the return of the energy storage device 2 by the users.

[0061] The two energy storage devices 2 extracted simultaneously by the extraction unit 112 may be energy storage devices 2 from any two slots SL in any of the multiple housings (1a, 1b, and 1c in Figure 1) included in the storage device 200. For example, one energy storage device 2 may be extracted simultaneously from housing 1a and one energy storage device 2 from housing 1b in Figure 1 and provided to the user P.

[0062] The electric motor 400 is any device that can be driven by power supplied from the energy storage device 2. The electric motor 400 is, for example, a vehicle capable of housing two or more energy storage devices 2. For example, if the electric motor 400 is a vehicle capable of housing four energy storage devices 2, the user may obtain four energy storage devices 2 above the housing 1. The electric motor 400 may also be a portable power supply such as a mobile terminal.

[0063] The control device 10 may include an authentication unit 210 (see, for example, Patent Document 3) that has the function of receiving operations from the user. The control device 10 performs user authentication via the authentication unit 210 using an IC card, IC tag, credit card, etc. The authentication unit 210 may be, for example, a user interface shown by reference numeral 136 in Patent Document 2.

[0064] The control device 10 is connected to a network NW. The network NW includes, for example, one or more of the following: the Internet, a cellular network, a Wi-Fi network, a WAN (Wide Area Network), a LAN (Local Area Network), etc. The control device 10 communicates with the server 300 via the network NW. For example, the control device 10 sends information about the storage device 200 and / or information about the energy storage device 2 to the server 300. Based on this information, the server 300 determines the status of each storage device 200 and / or the status of the energy storage device 2. Based on the determination result, the server 300 sends an instruction to the control device 10. The control device 10 controls the storage device 200 based on the received instruction.

[0065] Server 300 may communicate with terminal device T used by user P directly or via network NW, and manage reservations for the use of energy storage device 2 stored in storage device 200. Server 300 may also transmit reservation information to storage device 200 based on reservations for the use of energy storage device 2. Terminal device T is any electronic device, such as a stationary PC, notebook PC, or portable terminal device.

[0066] (Correlation data between temperature and internal resistance) Figure 2 shows the correlation between temperature (°C) and internal resistance (mΩ) for each degree of degradation (%) of the energy storage device 2. The degree of degradation may be shown using any index that indicates the degree of degradation of the energy storage device 2. The degree of degradation is, for example, SOH (State of Health). The solid line graph is for a new (BOL: Begin of Life) energy storage device. The SOH of a new energy storage device is, for example, 100%. The dashed line graph is for a degraded (EOL: End of Life) energy storage device. The SOH of a degraded energy storage device is, for example, less than 80%. Internal resistance includes, for example, direct current resistance (DCR).

[0067] For example, let's assume that the temperature of a new energy storage device and a degraded energy storage device are both Ta [°C]. In this case, the internal resistance of the new energy storage device is Ra [mΩ]. In contrast, the internal resistance of the degraded energy storage device is Rb [mΩ]. That is, there is an internal resistance difference of (Rb - Ra) [mΩ] between the internal resistance of the new energy storage device and the internal resistance of the degraded energy storage device. If two energy storage devices with this internal resistance difference are supplied to a vehicle simultaneously, current drift may occur. Furthermore, this can also cause voltage fluctuations.

[0068] Let's assume that the temperature of a new energy storage device is Tb [°C] and the temperature of a degraded energy storage device is Ta [°C]. In this case, the internal resistance of the new energy storage device is Rb [mΩ]. The internal resistance of the degraded energy storage device is also Rb [mΩ]. That is, the internal resistance of the new energy storage device is the same as the internal resistance of the degraded energy storage device, and there is no difference in internal resistance between the two. If two energy storage devices with equal internal resistance are supplied to a vehicle simultaneously, the occurrence of current drift can be suppressed.

[0069] If the energy storage device 2 has an upper temperature limit (TUL [°C]) and a lower temperature limit (TLL [°C]), the internal resistance of a new energy storage device and the internal resistance of a deteriorated energy storage device can be the same within the range of RLL [mΩ] to RUL [mΩ].

[0070] (Control device configuration) Figure 3 shows the configuration of the control device 10. The control device 10 comprises a control unit 11, a storage unit 12, and a communication unit 13.

[0071] The control unit 11 is any arithmetic unit (i.e., processor), such as a CPU (Central Processing Unit) or MPU (Micro Processing Unit). The control unit 11 performs various functions by operating according to a pre-prepared program. Specifically, the control unit 11 has the functions of an acquisition unit 111 and an extraction unit 112. These functions will be described later.

[0072] The storage unit 12 is a storage device composed of semiconductor storage media such as SSDs, RAMs, and ROMs, or recording media such as HDDs, magnetic disks, and CD-ROMs. The storage unit 12 may be any temporary-readable storage medium or any non-temporary-readable storage medium. The storage unit 12 stores computer programs used for the operation commands of the control unit 11 described above, and various data used in the processing of the control unit 11. The computer programs or data may be delivered from other devices via the communication unit 13 during the operation of the control unit 11, stored in the storage unit 12, and used as appropriate for the processing of the control unit 11.

[0073] The communication unit 13 is an interface for connecting to a wide-area communication network such as the Internet. The control device 10 communicates with other devices such as the server 300 via the wide-area communication network and the communication unit 13.

[0074] (Example of operation) The processing flow of the control device 10 will be explained with reference to Figures 4 and 5. Figure 5 shows the time variation of each data (internal resistance (DCR), voltage, and temperature) of the energy storage device 2. Note that the content and order of processing shown below is just one example, and the following explanation is not intended to limit the content and order of processing.

[0075] Assume that uncharged energy storage devices 2 are housed in the two slots SL of the enclosure 1 shown in Figure 1. The explanation will assume that these uncharged energy storage devices 2 are the first and second energy storage devices. For convenience, the following explanation of the operation examples will only describe the temperature operation of two energy storage devices; however, those skilled in the art will understand that the same principles apply to three or more energy storage devices.

[0076] [Step S101] The control device 10 acquires the OCV (Open Circuit Voltage) of the first and second energy storage devices. Assume that V1 is acquired as the first OCV for the first energy storage device and V0 is acquired as the second OCV for the second energy storage device.

[0077] [Step S102] The control device 10 obtains the State of Charge (SOC) of the first energy storage device and the second energy storage device.

[0078] For example, the control device 10 uses SOC-OCV curve data pre-stored in the memory unit 12 and the acquired OCVs of the first and second energy storage devices to obtain the SOC of the first and second energy storage devices. The SOC may be obtained by any other measurement method. For example, the SOC may be obtained by the Coulomb counting method or the Kalman filter method. If the SOC of the first and second energy storage devices is not 100%, the control device 10 determines that the first and second energy storage devices are uncharged and that the first and second energy storage devices are the energy storage devices to be charged.

[0079] [Step S103] The acquisition unit 111 of the control device 10 acquires the degree of deterioration of the first energy storage device and the second energy storage device.

[0080] The degree of degradation is, for example, State of Health (SOH). SOH may be obtained by any measurement method. For example, SOH may be obtained based on a correspondence table between the cycle time of the energy storage device 2 and SOH. The cycle time data and correspondence table data for each energy storage device may be managed by the server 300 and pre-stored in the storage unit 12 of the control device 10. Alternatively, SOH may be obtained based on the change in charge capacity during charging.

[0081] Assume that the State of Health (SOH) obtained for the first energy storage device is 100%, and the SOH obtained for the second energy storage device is 80%.

[0082] [Step S104] The acquisition unit 111 of the control device 10 acquires the current temperatures of the first energy storage device and the second energy storage device.

[0083] For example, the acquisition unit 111 acquires the first temperature of the first energy storage device using a first temperature acquisition device provided in the slot SL in which the first energy storage device is housed. Similarly, the acquisition unit 111 acquires the second temperature of the second energy storage device using a second temperature acquisition device provided in the slot SL in which the second energy storage device is housed.

[0084] Assume that T1 is obtained as the first temperature for the first energy storage device. Similarly, assume that the same T1 is obtained as the second temperature for the second energy storage device.

[0085] [Step S105] The control device 10 generates a charging plan. The charging plan is generated such that when the first and second energy storage devices are provided to the user, the first internal resistance of the first energy storage device and the second internal resistance of the second energy storage device are approximately the same. Here, "approximately the same" does not mean that the first and second internal resistances are not exactly the same. "Approximately the same" includes the fact that when the first and second energy storage devices are used in the same vehicle, the first and second internal resistances are adjusted to be similar in order to avoid the occurrence of current deviation. That is, "approximately the same" means that the first internal resistance of the first energy storage device and the second internal resistance of the second energy storage device are adjusted to minimize the difference between the first and second internal resistances.

[0086] The charging plan includes the timing for starting and stopping the temperature control unit and / or the charging unit. The temperature control unit includes at least one of a heating unit and a cooling unit. The charging plan is generated based on at least one of the information on the temperature of the energy storage device 2 that the heating unit or the charging unit can raise per unit time, and the information on the temperature of the energy storage device 2 that the cooling unit can decrease per unit time.

[0087] For example, the charging plan includes the following: Specifically, the control device 10 acquires internal resistance information stored in the memory unit 12. The internal resistance information is information about the internal resistance of the energy storage device. The internal resistance information is correlation data showing the correlation between temperature (°C) and internal resistance (mΩ) for each degree of degradation (%) of the energy storage device 2, as shown in Figure 2, for example. The control device 10 acquires first graph data (G1) based on the SOH (100[%]) of the first energy storage device. The control device 10 acquires second graph data (G2) based on the SOH (80[%]) of the second energy storage device.

[0088] Next, the control device 10 sets the target internal resistance values ​​for the first and second energy storage devices. For example, the control device 10 sets the target internal resistance values ​​so that the uniform internal resistance value is minimized. In the example shown in Figure 2, the control device 10 sets the target internal resistance value to RLL [mΩ].

[0089] The control device 10 sets a first target temperature for the first energy storage device and a second target temperature for the second energy storage device based on the target internal resistance value. Specifically, the control device 10 sets the temperature corresponding to RLL [mΩ] in the first graph data (G1) as the first target temperature. The control device 10 sets the temperature corresponding to RLL [mΩ] in the second graph data (G2) as the second target temperature. The first target temperature is set to T3 [°C], and the second target temperature is set to T6 [°C].

[0090] The control device 10 generates a charging plan such that at t3, the estimated time of charging completion, the first energy storage device reaches the first target temperature (T3[°C]) and the second energy storage device reaches the second target temperature (T6[°C]). Since T6[°C]-T1[°C]>T3[°C]-T1[°C], more time is needed to raise the temperature of the second energy storage device compared to the first energy storage device. Therefore, for example, the control device 10 decides to charge the second energy storage device and heat it during the first half of the charging plan (in Figure 5, (t1~t2)[s]). At the same time, the control device 10 decides to heat the second energy storage device by operating the heating unit corresponding to the second energy storage device during the first half of the charging plan (in Figure 5, (t1~t2)[s]). Furthermore, the control device 10 decides to stop the heating unit corresponding to the second energy storage device at the end of the first half of the charging plan (t2[s] in Figure 5). Also, the control device 10 decides to charge the first and second energy storage devices and to heat the first and second energy storage devices in conjunction with the charging during the second half of the charging plan ((t2~t3)[s] in Figure 5).

[0091] Furthermore, the control device 10 determines the temperature (T4 [°C]) of the second energy storage device at the end of the first half of the charging plan (t2 [s] in Figure 5) using the following equation 1. T4[℃]=T6-(T3-T1)[℃]...(Formula 1)

[0092] Next, the control device 10 calculates the time (t2-t1)[s] for the first half of the charging plan using the following equation 2. (t2-t1)[s]=(T4-T1)[°C] / (A[°C / s]+B[°C / s]), (A[°C / s] represents the temperature of the energy storage device 2 that the charging unit can raise per unit time. B[°C / s] represents the temperature of the energy storage device 2 that the heating unit can raise per unit time.) ... (Equation 2)

[0093] Furthermore, the control device 10 calculates the time (t3-t2)[s] for the latter half of the charging plan using the following equation 3. Note that (T6-T4)[℃] = (T3-T1)[℃]. (t3-t2)[s]=(T6-T4)[℃] / A[℃ / s]…(Formula 3)

[0094] [Step S106] In t1[s], the control device 10 controls the charging unit corresponding to the first energy storage device and the second energy storage device, respectively, based on the generated charging plan, and performs charging of the first energy storage device and the second energy storage device.

[0095] Specifically, charging is performed as shown in Figure 5. Note that t0 to t1 in Figure 5 is the preparation period for heating and charging. Specifically, steps S101 to S105 described above are performed during this preparation period.

[0096] Next, at t1[s], the control device 10 activates the charging unit corresponding to the second energy storage device. This causes the control device 10 to charge the second energy storage device and also heat it. Furthermore, at t1[s], the control device 10 activates the heating unit corresponding to the second energy storage device. This causes the control device 10 to increase the rate at which the temperature of the second energy storage device rises.

[0097] At time t2[s], the control device 10 stops the heating unit corresponding to the second energy storage device. This stops the temperature rise caused by the heating unit corresponding to the second energy storage device. Also at time t2[s], the control device 10 activates the charging unit corresponding to the first energy storage device. This causes the control device 10 to charge the first energy storage device and heat it.

[0098] Next, at t3[s], the charging unit corresponding to the first energy storage device and the charging unit corresponding to the second energy storage device are stopped. As a result, the control device 10 stops heating the first energy storage device and the second energy storage device. At t3[s], charging of the first energy storage device and the second energy storage device is completed.

[0099] [Step S107] Also, at t3[s], the control device 10 detects that charging of the first and second energy storage devices is complete. For example, the control device 10 detects that charging of the first and second energy storage devices is complete when the voltage of the first and second energy storage devices becomes V2.

[0100] At this time, as shown in Figure 5, the first temperature of the first energy storage device is T3 [°C], and the second temperature of the second energy storage device is T6 [°C]. That is, the first temperature of the first energy storage device has reached the first target temperature in the charging plan. Also, the second temperature of the second energy storage device has reached the second target temperature in the charging plan. At this time, the first internal resistance of the first energy storage device is R1 [mΩ]. The second internal resistance of the second energy storage device is also R1 [mΩ]. R1 [mΩ] is the target internal resistance value RLL [mΩ]. That is, the first internal resistance has been adjusted to be approximately the same as the second internal resistance. If it is determined at this point that the first internal resistance and the second internal resistance are not approximately the same, then either the first or second energy storage device may be further heated or cooled.

[0101] In step S108, t4[s], the control device 10 provides the user P with the first and second energy storage devices, which have been fully charged, in response to the user P's request.

[0102] As shown in Figure 5, t4[s], when the energy storage device is supplied, is a certain amount of time after t3[s], when charging is complete. At t3[s], the heating operation of the energy storage device has stopped, but the heated first and second energy storage devices are cooled by heat conduction. Unless the time spent cooling by heat conduction (t3~t4) is long, the first internal resistance of the first energy storage device and the second internal resistance of the second energy storage device will increase while remaining approximately the same, as shown in Figure 5.

[0103] When the control device 10 receives a request from user P to acquire two energy storage devices, it determines whether the temperature conditions for the first energy storage device and the second energy storage device are met. These temperature conditions are the conditions for the first temperature of the first energy storage device and the second temperature of the second energy storage device, such that the first internal resistance of the first energy storage device and the second internal resistance of the second energy storage device are approximately the same. Specifically, the control device 10 determines whether the first internal resistance calculated from the first temperature and the second internal resistance calculated from the second temperature are approximately the same, based on the correlation data shown in Figure 2.

[0104] The extraction unit 112 of the control device 10 extracts the first and second energy storage devices simultaneously if the temperature conditions for the first and second energy storage devices are met such that the first internal resistance of the first energy storage device and the second internal resistance of the second energy storage device are approximately the same. As shown in Figure 5, at t4[s] the first internal resistance is R2[mΩ] and the second internal resistance is R2[mΩ], so the first and second internal resistances are approximately the same. Therefore, at t4[s] the temperature conditions for the first and second energy storage devices being approximately the same are met, and the extraction unit 112 extracts the first and second energy storage devices simultaneously. The control device 10 provides the extracted first and second energy storage devices to the user P.

[0105] Immediately after the first and second energy storage devices are acquired by user P at t4[s], at t5[s], the first and second energy storage devices are loaded into the storage compartment of user P's electric motor 400.

[0106] At t5[s], the electric motor 400 is put into use, and as the electric motor 400 is driven, the voltages of the first and second energy storage devices begin to decrease. At t6[s], the power to the electric motor 400 is temporarily shut off. At t7[s], the electric motor 400 is restarted, and at t8[s], the discharge is completed.

[0107] As shown in Figure 5, at t5[s], the voltage and internal resistance are the same, so the same current flows through the first and second energy storage devices. That is, the amount of heat generated when using the first and second energy storage devices is the same, and the temperature difference between the first and second temperatures is maintained to some extent even during discharge. Therefore, from the time the first and second energy storage devices are put into use in the electric motor 400 until their use is completed at t8[s], no large difference in internal resistance occurs between the first and second internal resistances. This makes it possible to suppress the generation of current deviation in the electric motor 400.

[0108] (Effects and Benefits) As described above, the control device 10 according to the first embodiment includes a control unit 11 that controls at least one of a charging unit that charges a plurality of energy storage devices 2 including a first energy storage device and a second energy storage device, and a temperature control unit that adjusts the temperature of at least one of the first energy storage device and the second energy storage device, and an acquisition unit 111 that acquires internal resistance information which is information relating to the internal resistance of the first energy storage device and the second energy storage device, and the control unit 11 controls at least one of the charging unit and the temperature control unit so as to reduce the difference between the first internal resistance which is the internal resistance of the first energy storage device and the second internal resistance which is the internal resistance of the second energy storage device, based on the first internal resistance information which is the internal resistance information of the first energy storage device and the second internal resistance information which is the internal resistance information of the second energy storage device acquired by the acquisition unit 111.

[0109] As a result, when the first and second energy storage devices are provided to the user, their internal resistances are adjusted to be approximately the same. This suppresses the occurrence of current drift in the vehicle. Furthermore, measures to prevent current drift and recirculation on the vehicle side become unnecessary. In addition, it is possible to increase the maximum output of the vehicle and increase the number of parallel energy storage devices. Moreover, when used in the electric motor 400, the current values ​​of all energy storage devices are the same, so the degree of degradation is made uniform, and the lifespan of the entire energy storage device can be extended.

[0110] The first embodiment described above is not limited to the embodiments described above. For example, the first embodiment also includes the following modifications.

[0111] (First variation) For example, the charging plan generated in step S105 above was generated for multiple uncharged energy storage devices. If the multiple energy storage devices are already charged, the plan generated in step S105 above may include a temperature operation plan by a heating unit or a cooling unit, but may not include a charging operation plan. In this case as well, the effects described above according to the first embodiment can be obtained.

[0112] (Second variation) In step S105 described above, the target internal resistance values ​​of the first and second energy storage devices were set so that the uniform internal resistance value was minimized. In a second modification of the first embodiment, the target internal resistance values ​​of the first and second energy storage devices may be set to any value within the range from the value that minimizes the uniform internal resistance value to the value that maximizes the uniform internal resistance value. For example, the target internal resistance values ​​may be set so that the temperature of energy storage device 2, which reaches its highest value when the internal resistance is uniformized, is minimized. In this case as well, the effects described above according to the first embodiment can be obtained.

[0113] (Third variation) In the first embodiment described above, heating by the heating unit or cooling by the cooling unit requires electricity. In a third modification of the first embodiment, the target internal resistance values ​​of the first and second energy storage devices may be set such that the power loss is minimized, including the reduction in internal resistance, when considering the amount of electricity required for heating by the heating unit or cooling by the cooling unit. This prevents the waste of electricity by the heating unit or cooling unit.

[0114] (Fourth variation) In the first embodiment described above, the charging plan was generated such that the internal resistance values ​​of multiple energy storage devices were substantially identical, based on the correlation between internal resistance and temperature. In a fourth variation of the first embodiment, the charging plan may be controlled such that the voltage values ​​of multiple energy storage devices are substantially identical, based on the correlation between voltage and temperature (i.e., voltage information). The voltage information includes potential relative to a reference potential or a value related to the amount of energy stored. The value related to the amount of energy stored includes at least one of dischargeable energy [Wh], charge amount or remaining capacity [Ah], charge rate or state of charge (SOC) [%], and depth of discharge. As shown in Figure 5, there is a close correlation between internal resistance (i.e., DCR) and voltage. Based on this correlation, the internal resistances of multiple energy storage devices can be indirectly controlled to be substantially identical by performing temperature operations on the energy storage devices. In this case as well, the effects described above according to the first embodiment are obtained.

[0115] (Fifth variation) In the first embodiment described above, the charging plan was generated by redefining and functioning the internal resistance (R=g(T, SOH)) for a constant voltage [V] at the time of charging completion. In a fifth modification of the first embodiment, a map of R for T and SOH may be used for a constant voltage [V]. In this case, several data points for the voltage [V] may be taken at some high voltage points and linearly coupled. Alternatively, a three-dimensional map of voltage, internal resistance, and temperature may be pre-stored in the storage unit 12, and the internal resistance may be adjusted. Alternatively, linearized data of voltage, internal resistance, and temperature may be pre-stored in the storage unit 12, and the internal resistance may be adjusted. In this case as well, the effects of the first embodiment described above can be obtained.

[0116] (Sixth variation) In the first embodiment described above, DC resistance (DCR) was used as the internal resistance. Alternatively, AC resistance (ACR) may be used as the internal resistance. In that case, the internal resistance information may include information that further considers the circuit characteristics, material type, and frequency conditions.

[0117] <Second Embodiment> The second embodiment will be described focusing on the differences from the first embodiment. In the first embodiment, the charging operation was performed based on a charging plan created in advance before charging. In contrast, in the second embodiment, feedback control is used to control the charging of the multiple energy storage devices 2 so that the first internal resistance and the second internal resistance become approximately the same when charging is completed. The charging in the second embodiment assumes a 4-stage CC (Constant Current) charging. It is assumed that the degree of degradation of the first energy storage device to be charged is different from the degree of degradation of the second energy storage device to be charged.

[0118] (Example of operation) [Step S201] The control device 10 obtains a first OCV for the first energy storage device and a second OCV for the second energy storage device.

[0119] [Step S202] The control device 10 determines whether the first OCV and the second OCV are substantially the same. If it is determined that the first OCV and the second OCV are substantially the same (Step S202: Yes), the process proceeds to step S205. If it is determined that the first OCV and the second OCV are not substantially the same (Step S202: No), the process proceeds to step S203.

[0120] [Step S203] The control device 10 starts charging the energy storage device with the smaller OCV value among the first OCV and the second OCV.

[0121] [Step S204] The control device 10 confirms that the first OCV and the second OCV have become substantially the same.

[0122] [Step S205] The control device 10 simultaneously starts charging the first energy storage device and the second energy storage device.

[0123] [Step S206] While the first and second energy storage devices are being charged, the control device 10 obtains the first internal resistance of the first energy storage device and the second internal resistance of the second energy storage device.

[0124] [Step S207] The control device 10 determines whether the first internal resistance and the second internal resistance are approximately the same. If it is determined that the first internal resistance and the second internal resistance are approximately the same (Step S207: Yes), the process proceeds to step S209. If it is determined that the first internal resistance and the second internal resistance are not approximately the same (Step S207: No), the process proceeds to step S208.

[0125] [Step S208] The control device 10 heats the energy storage device with the higher internal resistance among the first and second internal resistances using the heating unit. Alternatively, the control device 10 cools the energy storage device with the lower internal resistance among the first and second internal resistances using the cooling unit.

[0126] [Step S209] The control device 10 determines whether the first and second energy storage devices have a voltage equivalent to a full charge. If it is determined that the first and second energy storage devices do not have a voltage equivalent to a full charge (Step S209: No), the process returns to Step S206. If it is determined that the first and second energy storage devices have a voltage equivalent to a full charge (Step S209: Yes), the process terminates.

[0127] (Effects and Benefits) As described above, the control device 10 according to the second embodiment heats the energy storage device corresponding to the higher of the first and second internal resistances, or cools the energy storage device corresponding to the lower of the first and second internal resistances, when the first and second internal resistances are different. This makes it possible to obtain the same effects as those of the first embodiment described above.

[0128] <Third Embodiment> The first and second embodiments have been described above. Each operation in each embodiment was performed by one of the functional units provided in the control device 10. However, the main component of each operation in each embodiment is not limited to the functional units described in the first and second embodiments.

[0129] For example, the server 300 may perform some or all of the processing that the control device 10 performs in the above embodiment. That is, the control unit of the server 300 may perform processing as the acquisition unit 111 and / or extraction unit 112.

[0130] Each device in each embodiment (control device 10 or server 300) may consist of multiple devices. Each device in each embodiment may be implemented using cloud computing.

[0131] <Other Embodiments> Although the embodiments have been described above, they are merely examples and do not limit the scope of the present invention. Each embodiment can be implemented in various ways without departing from the spirit of the present invention. [Explanation of Symbols]

[0132] 1 cabinet 2. Energy storage device 10 Control device 11 Control Unit 111 Acquisition Department 112 Extraction part 12 Storage section 13 Communications Department 100 Battery Sharing Service System 200 Storage device 210 Authentication Department 300 servers 400 Electric equipment 500 external power supply

Claims

1. A charging unit that charges a plurality of energy storage devices, including a first energy storage device and a second energy storage device, and a temperature control unit that controls at least one of the temperature of at least one of the first energy storage device and the second energy storage device, An acquisition unit that acquires internal resistance information, which is information relating to the internal resistance of the first energy storage device and the second energy storage device, Equipped with, The control unit controls at least one of the charging unit and the temperature control unit based on the first internal resistance information, which is the internal resistance information of the first energy storage device, and the second internal resistance information, which is the internal resistance information of the second energy storage device, acquired by the acquisition unit, so as to reduce the difference between the first internal resistance, which is the internal resistance of the first energy storage device, and the second internal resistance, which is the internal resistance of the second energy storage device.

2. The acquisition unit further acquires information regarding the degree of deterioration of the first energy storage device and the second energy storage device, The control device according to claim 1, wherein if the first degree of degradation of the first energy storage device acquired by the acquisition unit is different from the second degree of degradation of the second energy storage device acquired by the acquisition unit, the control unit controls at least one of the charging unit and the temperature control unit based on the first internal resistance information and the second internal resistance information acquired by the acquisition unit, so as to reduce the difference between the first internal resistance and the second internal resistance.

3. The acquisition unit further acquires the temperatures of the first energy storage device and the second energy storage device, The control device according to claim 2, wherein if the first degree of degradation acquired by the acquisition unit is different from the second degree of degradation acquired by the acquisition unit, the control unit controls at least one of the charging unit and the temperature control unit so that the temperature conditions for the first and second energy storage devices are satisfied such that the first internal resistance of the first energy storage device and the second internal resistance of the second energy storage device are substantially the same, thereby changing the first temperature of the first energy storage device acquired by the acquisition unit and the second temperature of the second energy storage device acquired by the acquisition unit.

4. The control unit, Based on the first degree of degradation and the second degree of degradation, a first target temperature at the time of completion of charging of the first energy storage device and a second target temperature at the time of completion of charging of the second energy storage device are set. The control device according to claim 3, which controls at least one of the charging unit and the temperature control unit so that the temperature condition is met in which the first internal resistance and the second internal resistance are substantially the same, thereby adjusting the first temperature to a first target temperature and adjusting the second temperature to a second target temperature.

5. The control unit, Based on the first degree of degradation and the second degree of degradation, the target internal resistance values ​​of the first energy storage device and the second energy storage device are set. The control device according to claim 3, which controls at least one of the charging unit and the temperature control unit so that the first internal resistance and the second internal resistance become the target internal resistance value, thereby changing the first temperature and the second temperature.

6. The control device according to any one of claims 1 to 5, wherein the temperature control unit is a heating unit or a cooling unit.

7. The acquisition unit further acquires voltage information, which is information relating to the voltages of the first energy storage device and the second energy storage device, respectively. The control unit, A control device according to any one of claims 1 to 6, wherein, based on the first voltage information which is the voltage information of the first energy storage device acquired by the acquisition unit and the second voltage information which is the voltage information of the second energy storage device, the device controls at least one of the charging unit and the temperature control unit so that the difference between the first voltage which is the voltage of the first energy storage device and the second voltage which is the voltage of the second energy storage device becomes smaller.

8. The system further includes an extraction unit that, in response to a request from the user, extracts a power storage device from among the plurality of power storage devices to be provided to the user. The control device according to claim 1, wherein the extraction unit simultaneously extracts from a plurality of energy storage devices a first energy storage device having the first internal resistance and a second energy storage device having a second internal resistance substantially the same as the first internal resistance.

9. The acquisition unit further acquires information regarding the degree of deterioration of each of the plurality of energy storage devices and the temperature of each of the plurality of energy storage devices. The control device according to claim 8, wherein the extraction unit simultaneously extracts from among a plurality of energy storage devices a first energy storage device having a first degree of degradation and a second energy storage device having a second degree of degradation that is substantially the same as the first degree of degradation.

10. The control device further comprises a charging unit configured to charge the plurality of energy storage devices, The control device according to claim 9, wherein the control device changes the first temperature and the second temperature using the heating associated with charging by the charging unit.

11. The control device further comprises a temperature control unit, the temperature control unit being a heating unit or a cooling unit. The control device according to claim 9 or 10, wherein the control device changes the first temperature and the second temperature using the heating unit or the cooling unit.

12. The control device is Based on the first degree of degradation and the second degree of degradation, a first target temperature at the time of completion of charging of the first energy storage device and a second target temperature at the time of completion of charging of the second energy storage device are set. The control device according to any one of claims 9 to 11, which adjusts the first temperature to the first target temperature and the second temperature to the second target temperature so that the temperature conditions are met such that the first internal resistance and the second internal resistance are substantially the same.

13. The control device is Based on the first degree of degradation and the second degree of degradation, the target internal resistance values ​​of the first energy storage device and the second energy storage device are set. A control device according to any one of claims 9 to 12, wherein the first temperature and the second temperature are changed so that the first internal resistance and the second internal resistance become the target internal resistance value.

14. The control device according to claim 13, wherein the target internal resistance value is set so as to minimize power loss in the control device.

15. To satisfy the temperature conditions, the first temperature of the first energy storage device acquired by the acquisition unit and the second temperature of the second energy storage device acquired by the acquisition unit are changed. When the first internal resistance and the second internal resistance are different, The energy storage device corresponding to the higher of the first internal resistance and the second internal resistance is heated, or the energy storage device corresponding to the lower of the first internal resistance and the second internal resistance is cooled. The control device according to claim 9, including the following:

16. A control device for controlling a storage device for a plurality of energy storage devices, including a first energy storage device and a second energy storage device, An acquisition unit that acquires information regarding the degree of deterioration of the first energy storage device and the second energy storage device, and the temperature of the first energy storage device and the second energy storage device, Equipped with, The control device is If the first degree of deterioration of the first energy storage device acquired by the acquisition unit is different from the second degree of deterioration of the second energy storage device acquired by the acquisition unit, The first temperature of the first energy storage device and the second temperature of the second energy storage device acquired by the acquisition unit are modified so that when the first energy storage device and the second energy storage device are provided for use at the same time, the first internal resistance of the first energy storage device and the second internal resistance of the second energy storage device are substantially the same. Control device.

17. A charging unit that charges a plurality of energy storage devices, including a first energy storage device and a second energy storage device, and a temperature control unit that adjusts the temperature of at least one of the first energy storage device and the second energy storage device, a step of controlling at least one of these, A step of acquiring internal resistance information, which is information relating to the internal resistance of the first energy storage device and the second energy storage device, Includes, The method includes a step of controlling at least one of the charging unit and the temperature control unit based on the first internal resistance information, which is the internal resistance information of the first energy storage device, and the second internal resistance information, which is the internal resistance information of the second energy storage device, so that the difference between the first internal resistance, which is the internal resistance of the first energy storage device, and the second internal resistance, which is the internal resistance of the second energy storage device, becomes smaller.

18. A method for controlling a storage device for a plurality of energy storage devices, including a first energy storage device and a second energy storage device, A step of obtaining information regarding the degree of deterioration of the first energy storage device and the second energy storage device, and the temperature of the first energy storage device and the second energy storage device, When the first degree of degradation of the first energy storage device and the second degree of degradation of the second energy storage device are different, a step of changing the first temperature of the first energy storage device and the second temperature of the second energy storage device so that the first internal resistance of the first energy storage device and the second internal resistance of the second energy storage device are substantially the same when the first energy storage device and the second energy storage device are used and provided simultaneously. Methods that include...

19. The processor of the control unit, A charging unit that charges a plurality of energy storage devices, including a first energy storage device and a second energy storage device, and a temperature control unit that controls at least one of the temperature of at least one of the first energy storage device and the second energy storage device, An acquisition unit that acquires internal resistance information, which is information relating to the internal resistance of the first energy storage device and the second energy storage device, and make it work A computer program that controls at least one of the charging unit and the temperature control unit, based on the first internal resistance information, which is the internal resistance information of the first energy storage device, and the second internal resistance information, which is the internal resistance information of the second energy storage device, acquired by the acquisition unit, so as to reduce the difference between the first internal resistance, which is the internal resistance of the first energy storage device, and the second internal resistance, which is the internal resistance of the second energy storage device.

20. A processor for a control device for controlling a storage device for a plurality of energy storage devices, including a first energy storage device and a second energy storage device, It functions as an acquisition unit that acquires information regarding the degree of deterioration of the first and second energy storage devices, and the temperatures of the first and second energy storage devices, respectively. The control device is If the first degree of deterioration of the first energy storage device acquired by the acquisition unit is different from the second degree of deterioration of the second energy storage device acquired by the acquisition unit, The first temperature of the first energy storage device and the second temperature of the second energy storage device acquired by the acquisition unit are modified so that when the first energy storage device and the second energy storage device are provided for use at the same time, the first internal resistance of the first energy storage device and the second internal resistance of the second energy storage device are substantially the same. Computer program.

21. A readable storage medium storing the computer program described in claim 19 or 20.

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