Power supply control device, power supply control system, power supply control method, and power supply control program

Abstract

To provide a power supply control device, a power supply control system, a power supply control method, and a power supply control program that can improve the estimation accuracy when supplying a predetermined pulse waveform to a secondary battery to estimate the state of the secondary battery. [Solution] The power supply control device 10 includes a power information acquisition unit 101 that acquires predicted power receiving information indicating the total predicted power received for multiple battery systems 30A to 30N, an acquisition determination unit 109 that determines whether a predetermined pulse waveform can be obtained from the predicted power received, and a power supply control unit 110 that, if it is determined that a pulse waveform can be obtained from the predicted power received, causes the distribution device that supplies power to the battery system including the string to be supplied, among the multiple distribution devices 21A to 21N that supply power to each of the multiple battery systems 30A to 30N, to supply a pulse waveform obtained from the actual power received corresponding to the predicted power received.

Description

Technical Field

[0001] The present disclosure relates to a power supply control device, a power supply control system, a power supply control method, and a power supply control program for controlling power supply to a secondary battery.

Background Art

[0002] Conventionally, a method of estimating the state of a secondary battery based on the measured voltage and measured current of the secondary battery when a predetermined pulse waveform is supplied to the secondary battery has been used. In this method, the impedance of the secondary battery is calculated using the measured voltage and measured current of the secondary battery, and the characteristics in each frequency region are evaluated to estimate the state of the secondary battery. For example, based on the low-frequency region, the Li-ion diffusion phenomenon in the active material of the secondary battery can be estimated. Also, based on the intermediate frequency region, the electrochemical reaction of the secondary battery can be estimated. Further, based on the high-frequency region, the Li-ion diffusion phenomenon in the electrolyte of the secondary battery can be estimated.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the actual usage situation of the secondary battery, there is a problem that the estimation accuracy of the state of the secondary battery becomes low because a predetermined pulse waveform cannot be supplied to the secondary battery.

[0005] In this regard, the degradation state determination method disclosed in Patent Document 1 involves having the battery perform a pulse discharge of a substantially square wave with a predetermined current value and a predetermined period, determining a pseudo-impedance based on the amplitude of the square wave component of the response voltage during pulse discharge and the current value of the pulse discharge, and determining the degree of battery degradation from the pseudo-impedance. However, this degradation state determination method determines the degree of degradation by having the battery perform pulse discharge, and does not estimate the state of the secondary battery by supplying a predetermined pulse waveform to the secondary battery. Therefore, it is not possible to improve the estimation accuracy when estimating the state of the secondary battery by supplying a predetermined pulse waveform to the secondary battery.

[0006] This disclosure aims to solve such problems and to provide a power supply control device, a power supply control system, a power supply control method, and a power supply control program that can improve the estimation accuracy when a predetermined pulse waveform is supplied to a secondary battery to estimate the state of the secondary battery. [Means for solving the problem]

[0007] The power supply control device for controlling the power supply to multiple battery systems, each including a string of multiple secondary batteries connected in series, according to this disclosure, A power information acquisition unit that acquires predicted power reception information showing the total predicted power reception of multiple battery systems, An acquisition determination unit that determines whether a predetermined pulse waveform can be obtained from the predicted power received, If it is determined that a pulse waveform can be obtained from the predicted power received, the power supply control unit will cause the power distribution unit that supplies power to the battery system containing the string to be supplied to supply power to each of the multiple power distribution units that supply power to each of the multiple battery systems to supply power to the power distribution unit that supplies power to the target string to supply power, to supply a pulse waveform from the actual power received corresponding to the predicted power received. It is equipped with.

[0008] If it is determined that a pulse waveform cannot be obtained from the predicted power reception, the power information acquisition unit acquires subsequent predicted power reception information. The acquisition determination unit determines whether a pulse waveform can be acquired from the subsequent predicted power received indicated by the subsequent predicted power received information. If it is determined that a pulse waveform can be obtained from the subsequent predicted power received, the power supply control unit instructs the power distribution device that supplies power to the target string to supply a pulse waveform from the actual power received corresponding to the subsequent predicted power received.

[0009] Furthermore, the power supply control device includes a string determination unit that determines the string to be supplied with power. The string determination unit identifies undiagnosed strings as the strings to be supplied.

[0010] If multiple undiagnosed strings exist, the string determination unit selects the undiagnosed string with the highest measured voltage from among the multiple undiagnosed strings as the string to be supplied.

[0011] Furthermore, the power supply control device includes a string determination unit that determines the string to be supplied with power, If multiple diagnosed strings exist, the string determination unit selects the string with the earliest diagnosis time from among the multiple diagnosed strings as the string to be supplied.

[0012] Furthermore, the power supply control device includes a string determination unit that determines the string to be supplied with power, The string determination unit determines the string for which a pulse waveform supply is requested as the string to be supplied.

[0013] Furthermore, the power supply control unit causes strings other than the target string to receive power, by subtracting the pulse waveform from the actual received power corresponding to the predicted received power.

[0014] A power supply control system for controlling the supply of power to multiple battery systems, each including a string of multiple secondary batteries connected in series, according to this disclosure, A power information acquisition unit that acquires predicted power reception information showing the total predicted power reception of multiple battery systems, An acquisition determination unit that determines whether a predetermined pulse waveform can be obtained from the predicted power received, If it is determined that a pulse waveform can be obtained from the predicted power received, the power supply control unit causes the power distribution unit that supplies power to the battery system containing the string to be supplied to, among the multiple power distribution units that supply power to each of the multiple battery systems, to supply a pulse waveform from the actual power received corresponding to the predicted power received.

[0015] The power supply control method relating to this disclosure involves a computer that controls the power supply to multiple battery systems, each including a string of multiple secondary batteries connected in series, Obtain predicted power reception information that shows the total predicted power reception of multiple battery systems, Determine if a predetermined pulse waveform can be obtained from the predicted power reception. If it is determined that a pulse waveform can be obtained from the predicted power received, the power distribution device that supplies power to the battery system containing the target string among the multiple power distribution devices that supply power to each of the multiple battery systems will be instructed to supply a pulse waveform from the actual power received corresponding to the predicted power received.

[0016] The power supply control program relating to this disclosure controls a computer that controls the power supply to multiple battery systems, each including a string of multiple secondary batteries connected in series. Obtain predicted power reception information that shows the total predicted power reception of multiple battery systems, Determine if a predetermined pulse waveform can be obtained from the predicted power reception. If it is determined that a pulse waveform can be obtained from the predicted power received, the power distribution device that supplies power to the battery system containing the target string among the multiple power distribution devices that supply power to each of the multiple battery systems will be instructed to supply a pulse waveform from the actual power received corresponding to the predicted power received. [Effects of the Invention]

[0017] According to the present disclosure, when a predetermined pulse waveform is supplied to a secondary battery to estimate the state of the secondary battery, it is possible to provide a power supply control device, a power supply control system, a power supply control method, and a power supply control program capable of enhancing the estimation accuracy.

Brief Description of the Drawings

[0018] [Figure 1] It is a diagram showing a power supply control device, a power supply device, a power distribution device, and a battery system according to the present disclosure. [Figure 2] It is a diagram showing an example of the configuration of a battery system according to the present disclosure. [Figure 3] It is a diagram showing an example of the configuration of a power supply control device according to the present disclosure. [Figure 4] It is a diagram showing an example of the change over time of predicted power and a pulse waveform. [Figure 5] It is a diagram showing an example of processing executed by the power supply control device according to the present disclosure. [Figure 6] It is a flowchart showing an example of string determination processing. [Figure 7] It is a flowchart showing an example of power supply processing.

Embodiments for Carrying Out the Invention

[0019] FIG. 1 is a diagram showing a power supply control device 10, a power supply device 20, power distribution devices 21A to 21N, and battery systems 30A to 30N according to the present disclosure. Here, N represents an arbitrary number.

[0020] The power supply control device 10 is a device that controls the power supply to multiple secondary batteries (hereinafter referred to as "strings") connected in series, each of the multiple battery systems 30A to 30N. The power supply control device 10 can communicate data with the power supply device 20 and the battery systems 30A to 30N via a network such as CAN (Car Area Network) or communication lines 41 and 42 such as a data bus. The configuration of the power supply control device 10 will be described later with reference to Figure 3.

[0021] The power supply device 20 is a device that supplies power to the battery systems 30A to 30N via the power distribution devices 21A to 21N. In this embodiment, the power supply device 20 supplies power to the battery systems 30A to 30N based on instructions from the power supply control device 10. The power supply device 20 is connected to each of the power distribution devices 21A to 21N by power lines 33A to 33N.

[0022] The power distribution devices 21A to 21N are devices that supply power from the power supply device 20 to the battery systems 30A to 30N. The power distribution devices 21A to 21N are connected to the battery systems 30A to 30N by power lines 44A1, 44A2 to 44N1 and 44N2, respectively.

[0023] Battery systems 30A to 30N are systems with multiple strings. Figure 2 shows an example of the configuration of battery system 30A. The other battery systems 30B to 30N have the same configuration as battery system 30A.

[0024] The battery system 30A comprises an SCU (String Control Unit) 31, SUs (Sweep Units) 32 and 33, batteries 34 and 35, and switches SW1 to SW5. Batteries 34 and 35 form the string.

[0025] The SCU31 estimates the state of a string based on the measured voltage and current of the string when a predetermined pulse waveform is supplied to the string, and generates diagnostic information including the estimation result. The diagnostic information includes time information indicating the time when the diagnosis was performed. An example of a method for estimating the state of a string is the abnormality detection method disclosed in Patent Document 2. In this method, the fault location of the secondary battery is identified from the behavior of the current and voltage after charging and discharging is stopped. Note that the method for estimating the state of a string performed by the SCU31 is not limited to the above example.

[0026] Furthermore, SCU31 controls the charging and discharging of batteries 34 and 35 by controlling the on / off state of switch SW1. SCU31 can be implemented using a semiconductor circuit.

[0027] SU32 controls the charging and discharging of battery 34 by controlling the on / off state of switches SW2 and SW3. SCU32 can be implemented using semiconductor circuitry.

[0028] SU33 controls the charging and discharging of battery 35 by controlling the on / off state of switches SW4 and SW5. SCU33 can be implemented using a semiconductor circuit.

[0029] Figure 3 shows an example of the configuration of the power supply control device 10. Specific examples of the power supply control device 10 include a GCU (Group Control Unit) and an ECU (Electronic Control Unit). The power supply control device 10 comprises at least one arithmetic unit 100, a storage device 120, and a communication interface (I / F) 130. Specific examples of the arithmetic unit 100 include a processor such as a CPU (Central Processing Unit) or an MPU (Micro Processing Unit). The arithmetic unit 100 realizes the functional means shown in Figure 2 by executing instructions contained in a program stored in the storage device 120. Note that integrated circuits such as FPGAs (Field-Programmable Gate Arrays) and ASICs (Application Specific Integrated Circuits) may perform the processing executed by the power supply control device 10. Integrated circuits such as processors, MPUs, FPGAs, and ASICs are equivalent to computers.

[0030] The storage device 120 stores various information such as programs executed by the arithmetic unit 100 and data processed by the arithmetic unit 100.

[0031] The communication interface 130 is an interface for data communication between the power supply control device 10 and other devices.

[0032] The arithmetic unit 100 includes a power information acquisition unit 101, a battery information acquisition unit 102, a string selection unit 103, a string determination unit 104, a flag control unit 105, an elapsed time determination unit 106, a request determination unit 107, a flag determination unit 108, an acquisition determination unit 109, a power supply control unit 110, and a diagnostic result determination unit 111. These functional means can be implemented by a program.

[0033] The power information acquisition unit 101 acquires predicted power information for the battery systems 30A to 30N. The predicted power information includes predicted power reception information, which indicates the predicted power that the battery systems 30A to 30N will receive, and information indicating the predicted power that the battery systems 30A to 30N will consume. The power information acquisition unit 101 can acquire predicted power information from other devices, such as higher-level systems. The power information acquisition unit 101 may also generate predicted power information from information indicating the past power reception and power consumption of the battery systems 30A to 30N.

[0034] The battery information acquisition unit 102 acquires battery information from battery systems 30A to 30N. The battery information includes diagnostic information and measured voltages for each string included in battery systems 30A to 30N. The battery information acquisition unit 102 acquires diagnostic information and measured voltages for the strings from battery systems 30A to 30N.

[0035] The string selection unit 103 selects a string that is a candidate for the string to be supplied with a predetermined pulse waveform. The string to be supplied is a string whose state is estimated by the state estimation method described above. The string to be supplied corresponds to the string to be diagnosed.

[0036] The string determination unit 104 determines which string to supply. Specifically, if there is an undiagnosed string whose state has not been estimated, the string determination unit 104 determines the undiagnosed string to supply. If there are multiple undiagnosed strings, the string determination unit 104 determines the string with the highest measured voltage among the undiagnosed strings to supply.

[0037] Furthermore, if there are no undiagnosed strings, the string determination unit 104 can determine which strings to supply based on the time the diagnosis of each string is performed. In addition, based on a request for pulse waveform supply from another program, the string determination unit 104 can determine which strings to supply are specified in that request.

[0038] The flag control unit 105 controls a waveform supply request flag that indicates whether or not there is a request to supply a pulse waveform.

[0039] The elapsed time determination unit 106 determines whether a predetermined amount of time has elapsed since the last diagnosis was performed, based on time information indicating the time the diagnosis associated with the diagnostic information was performed.

[0040] The request determination unit 107 determines whether or not there is a pulse waveform supply request from another program.

[0041] The flag determination unit 108 refers to the waveform supply request flag and determines whether or not there is a pulse waveform supply request.

[0042] The acquisition determination unit 109 determines whether a pulse waveform can be acquired from the predicted power received indicated by the predicted power receiving information. Figure 4 is a diagram showing an example of the change in predicted power over time and a pulse waveform. The positive side of the graph in Figure 4 represents the predicted power received. As shown in Figure 4, a pulse waveform is a waveform that has a constant peak at predetermined time intervals. The acquisition determination unit 109 determines whether a pulse waveform can be acquired from the predicted power received based on the time interval and magnitude of the predicted power and the time interval and magnitude of the pulse waveform. Specifically, the acquisition determination unit 109 determines that a pulse waveform can be acquired from the predicted power received if the time interval and magnitude of the predicted power are greater than or equal to the time interval and magnitude of the pulse waveform.

[0043] The power supply control unit 110 instructs the power supply device 20 to supply the actual power received to the strings using the power distribution devices 21A to 21N, corresponding to the predicted power received. The power supply control unit 110 also instructs battery systems other than the battery system containing the strings to be supplied to to supply power to the strings to be supplied.

[0044] The diagnostic result determination unit 111 determines whether the diagnostic result indicated by the diagnostic information of the string to be supplied corresponds to a predetermined diagnostic result with high priority. A predetermined diagnostic result with high priority is, for example, a diagnostic result indicating that a minor short circuit has occurred.

[0045] Figure 5 is a flowchart showing an example of the process performed by the power supply control device 10. In step S1, the power information acquisition unit 101 acquires predicted power information for the battery systems 30A to 30N. In step S2, the battery information acquisition unit 102 acquires battery information for the battery systems 30A to 30N. In step S3, the power supply control device 10 performs a string determination process to determine the string to be supplied. In step S4, the power supply control device 10 performs a power supply process, and the process returns to step S1.

[0046] Figure 6 is a flowchart illustrating an example of the string determination process. In step S10, the string selection unit 103 selects strings other than those in an abnormal state based on the diagnostic information for each string. In step S11, the string selection unit 103 determines whether or not there are any undiagnosed strings among the strings selected in step S10, based on the presence or absence of diagnostic information for each string.

[0047] If it is determined that there are undiagnosed strings (YES), in step S12 the string determination unit 104 determines the undiagnosed string with the highest measured voltage as the string to be supplied. In step S13 the flag control unit 105 turns on the waveform supply request flag, and the string determination process ends.

[0048] If it is determined in step S11 that there are no undiagnosed strings (NO), in step S14 the elapsed time determination unit 106 determines whether a predetermined time has elapsed since the last diagnosis was performed, based on the time information indicating the time when the diagnosis associated with the diagnosis information was performed. If it is determined that a predetermined time has elapsed since the last diagnosis was performed (YES), in step S15 the string determination unit 104 determines the string with the earliest diagnosis execution time as the string to be supplied, and the process proceeds to step S13.

[0049] If it is determined in step S14 that the predetermined time has not elapsed since the last time a diagnosis was performed (NO), in step S16 the request determination unit 107 determines whether or not there is a pulse waveform supply request from another program. If it is determined that there is no pulse waveform supply request from another program (NO), the string determination process ends. On the other hand, if it is determined that there is a pulse waveform supply request from another program (YES), in step S17 the string determination unit 104 determines the string indicated by the pulse waveform supply request as the string to be supplied, and the process proceeds to step S13.

[0050] Figure 7 is a flowchart showing an example of the power supply process. In step S20, the flag determination unit 108 refers to the waveform supply request flag and determines whether or not there is a pulse waveform supply request. If it is determined that there is no pulse waveform supply request (NO), in step S27 the power supply control unit 110 instructs the power supply device 20 to supply the received power to the string, and the power supply process ends. In this case, the power supply control unit 110 can distribute the received power to each string according to the state of each string.

[0051] On the other hand, if it is determined that there is a request for pulse waveform supply (YES), the process branches to step S21. In step S21, the acquisition determination unit 109 determines whether or not a pulse waveform can be obtained from the predicted power received indicated by the predicted power received information. If it is determined that a pulse waveform can be obtained from the predicted power received (YES), in step S22, the power supply control unit 110 instructs the power supply device 20 to supply pulse waveforms to the string to be supplied determined in the string determination process.

[0052] In step S23, the power supply control unit 110 instructs the power supply device 20 to supply residual power, which is the power obtained by subtracting the pulse waveform from the actual power received corresponding to the predicted power received, to other strings other than the one being supplied with power. In this case, the power supply control unit 110 can distribute the residual power to the other strings depending on the state of those other strings.

[0053] In step S24, the flag control unit 105 turns off the waveform supply request flag, and the power supply process ends.

[0054] If it is determined in step S21 that a pulse waveform cannot be obtained from the predicted power received (NO), in step S25 the diagnostic result determination unit 111 determines whether the diagnostic result indicated by the diagnostic information of the string to be supplied corresponds to a predetermined diagnostic result with high priority. If it is determined that the diagnostic result indicated by the diagnostic information of the string to be supplied corresponds to a predetermined diagnostic result (YES), in step S26 the power supply control unit 110 instructs the power supply device 20 to supply a pulse waveform to the string to be supplied determined in the string determination process. In this case, the power supply control unit 110 instructs the power supply device 20 to supply the actual power received corresponding to the predicted power received to the string to be supplied, and also instructs battery systems other than the battery system that has the string to be supplied to supply the insufficient power necessary for generating the pulse waveform to the string to be supplied.

[0055] On the other hand, if the diagnostic information of the string to be supplied is determined not to correspond to a predetermined diagnostic result (NO), in step S28, the flag control unit 105 turns off the waveform supply request flag. In step S29, the power supply control unit 110 instructs the power supply device 20 to supply the actual received power corresponding to the predicted received power to the string, and the power supply process ends. In this case, the power supply control unit 110 can distribute the received power to each string according to the state of each string.

[0056] As described above, the battery information acquisition unit 102 of the power supply control device 10 acquires predicted power reception information that shows the total predicted power reception for multiple strings that include multiple battery systems 30A to 30N. The acquisition determination unit 109 determines whether a pulse waveform can be obtained from the predicted power reception. If it is determined that a pulse waveform can be obtained from the predicted power reception, the power supply control unit 110 causes the distribution device that supplies power to the battery system including the target string, among the multiple distribution devices 21A to 21N that supply power to each of the multiple battery systems 30A to 30N, to supply a pulse waveform from the actual power reception corresponding to the predicted power reception.

[0057] By adopting this configuration, a pulse waveform can be supplied to the target string. Therefore, when supplying a predetermined pulse waveform to a secondary battery to estimate its state, the estimation accuracy can be improved.

[0058] Furthermore, if the battery information acquisition unit 102 determines that it cannot acquire a pulse waveform from the predicted power, it acquires subsequent predicted power information. The acquisition determination unit 109 determines whether it is possible to acquire a pulse waveform from the predicted power received indicated by the subsequent predicted power received information. If it is determined that a pulse waveform can be acquired from the subsequent predicted power received, the power supply control unit 110 instructs the power distribution device that supplies power to the target string to supply a pulse waveform acquired from the actual power received corresponding to the subsequent predicted power received.

[0059] By adopting this configuration, even if a pulse waveform cannot be obtained from the actual power received corresponding to a preceding predicted power received power, power can still be supplied to the target string from the actual power received corresponding to a subsequent predicted power received power.

[0060] Furthermore, the string determination unit 104 determines that undiagnosed strings are to be supplied. This allows pulse waveforms to be supplied to undiagnosed strings, in other words, strings whose state is uncertain. As a result, by diagnosing the state of the undiagnosed strings when the pulse waveform is supplied, highly accurate diagnosis of the undiagnosed strings becomes possible.

[0061] Furthermore, if there are multiple undiagnosed strings, the string determination unit 104 determines the undiagnosed string with the highest measured voltage among the multiple undiagnosed strings as the string to be supplied. This allows the pulse waveform to be supplied to the undiagnosed string with the highest voltage, in other words, the undiagnosed string with the highest diagnostic priority. As a result, by diagnosing the state of the undiagnosed string when the pulse waveform is supplied, it becomes possible to diagnose the undiagnosed string with the highest voltage with high accuracy.

[0062] Furthermore, if multiple diagnosed strings exist, the string determination unit 104 determines the string with the earliest diagnosis time among the multiple diagnosed strings as the string to be supplied. This allows the pulse waveform to be supplied to the string with the earliest diagnosis time, in other words, the string that is most likely to have a change in state. As a result, by diagnosing the state of the string when the pulse waveform is supplied, it becomes possible to diagnose strings that are most likely to have a change in state with high accuracy.

[0063] Furthermore, the string determination unit 104 determines the strings for which pulse waveform supply is requested as the strings to be supplied. This allows pulse waveforms to be supplied to the strings for which pulse waveform supply is requested. As a result, by diagnosing the state of the string when the pulse waveform is supplied, it becomes possible to diagnose the string with high accuracy.

[0064] Furthermore, the power supply control unit 110 supplies power to strings other than the target string, which is the actual received power corresponding to the predicted power minus the pulse waveform. This allows the strings other than the target string to be charged.

[0065] In the embodiments described above, the power supply control device 10 includes a power information acquisition unit 101, a battery information acquisition unit 102, a string selection unit 103, a string determination unit 104, a flag control unit 105, an elapsed time determination unit 106, a request determination unit 107, a flag determination unit 108, an acquisition determination unit 109, a power supply control unit 110, and a diagnostic result determination unit 111. In other embodiments, at least some of these may be provided by the power supply device 20. In this case, the power supply control device 10 and the power supply device 20 correspond to a power supply control system. Furthermore, in other embodiments, all of these functional means may be provided by the power supply device 20. In this case, the power supply device 20 can also function as a power supply control device.

[0066] In the above example, the program describing the above-described process can be stored and provided to the computer using various types of non-transitory computer-readable medium. Non-transitory computer-readable mediums include various types of tangible storage mediums. Examples of non-transitory computer-readable mediums include magnetic storage media (e.g., flexible disks, magnetic tapes, hard disk drives), magneto-optical storage media (e.g., magneto-optical disks), CD-ROMs, CD-Rs, CD-R / Ws, and semiconductor memory (e.g., mask ROMs, PROMs (Programmable ROMs), EPROMs (Erasable PROMs), flash ROMs, RAMs). Alternatively, the program may be provided to the computer using various types of transient computer-readable mediums. Examples of transient computer-readable mediums include electrical signals, optical signals, and electromagnetic waves. Transitory computer-readable mediums can supply the program to the computer via wired communication channels such as electric wires and optical fibers, or via wireless communication channels.

[0067] This disclosure is not limited to the embodiments described above, and may be modified as appropriate without departing from the spirit of this disclosure. [Explanation of Symbols]

[0068] 10: Power supply control device 100: Arithmetic device 101: Power information acquisition section 102:Battery information acquisition section 103: String Selection Section 104: String determination section 105: Flag Control Unit 106: Elapsed time determination unit 107:Requirement judgment section 108: Flag determination unit 109: Acquisition judgment section 110: Power supply control unit 111: Diagnostic Result Determination Unit 120: Storage device 130: Communication Interface 20:Power supply device 21A~21N: Power distribution device 30A~30N: Battery System 41,42: Communication lines 43A~43N: Electrical wire 44A1, 44A2 ~ 44N1, 44N2: Electrical wire

Claims

1. A power supply control device that controls the supply of power to multiple battery systems, each including a string of multiple secondary batteries connected in series, A power information acquisition unit that acquires predicted power reception information indicating the total predicted power reception of the multiple battery systems, An acquisition determination unit that determines whether a predetermined pulse waveform can be obtained from the predicted power received, If it is determined that the pulse waveform can be obtained from the predicted power received, a power supply control unit is instructed to supply the pulse waveform from the actual power received corresponding to the predicted power received to the power distribution device that supplies power to the battery system including the string to be supplied, among the multiple power distribution devices that supply power to each of the multiple battery systems. Equipped with, Power supply control device.

2. If it is determined that the pulse waveform cannot be obtained from the predicted power received, the power information acquisition unit acquires subsequent predicted power received information. The acquisition determination unit determines whether the pulse waveform can be acquired from the subsequent predicted power received indicated by the subsequent predicted power received information. If it is determined that the pulse waveform can be obtained from the subsequent predicted power received, the power supply control unit causes the power distribution device that supplies power to the string to be supplied to supply the pulse waveform from the actual power received corresponding to the subsequent predicted power received, as described in claim 1.

3. The system includes a string determination unit that determines the string to be supplied, The power supply control device according to claim 1 or 2, wherein the string determination unit determines an undiagnosed string as the string to be supplied.

4. If there are multiple undiagnosed strings, the string determination unit determines the undiagnosed string with the highest measured voltage among the multiple undiagnosed strings as the string to be supplied, as described in claim 3.

5. The system includes a string determination unit that determines the string to be supplied, If multiple diagnosed strings exist, the string determination unit determines the string with the earliest diagnosis execution time among the multiple diagnosed strings as the string to be supplied, as described in claim 1 or 2.

6. The system includes a string determination unit that determines the string to be supplied, The power supply control device according to claim 1 or 2, wherein the string determination unit determines the string for which the supply of pulse waveforms is requested as the string to be supplied.

7. The power supply control device according to claim 1 or 2, wherein the power supply control unit causes the power to be supplied to strings other than the string to be supplied, the power obtained by subtracting the pulse waveform from the actual power received corresponding to the predicted power received power.

8. A power supply control system for controlling the supply of power to multiple battery systems, each including a string of multiple secondary batteries connected in series, A power information acquisition unit that acquires predicted power reception information indicating the total predicted power reception of the multiple battery systems, An acquisition determination unit that determines whether a predetermined pulse waveform can be obtained from the predicted power received, If it is determined that the pulse waveform can be obtained from the predicted power received, a power supply control unit is instructed to supply the pulse waveform from the actual power received corresponding to the predicted power received to the power distribution device that supplies power to the battery system including the string to be supplied, among the multiple power distribution devices that supply power to each of the multiple battery systems. including, Power supply control system.

9. A computer that controls the power supply to multiple battery systems, each containing a string of multiple secondary batteries connected in series, Obtain predicted power reception information showing the total predicted power reception of the multiple battery systems, Determine whether a predetermined pulse waveform can be obtained from the predicted power received. If it is determined that the pulse waveform can be obtained from the predicted power received, the power distribution device that supplies power to the battery system including the string to be supplied will be instructed to supply the pulse waveform from the actual power received corresponding to the predicted power received. Power supply control method.

10. A computer that controls the power supply to multiple battery systems, each containing a string of multiple secondary batteries connected in series, The system obtains predicted power reception information that shows the total predicted power reception of the multiple battery systems, Determine whether a predetermined pulse waveform can be obtained from the predicted power received. If it is determined that the pulse waveform can be obtained from the predicted power received, the power distribution device that supplies power to the battery system including the string to be supplied will be instructed to supply the pulse waveform from the actual power received corresponding to the predicted power received. Power supply control program.

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