Battery management device and battery management program

Abstract

The present invention reduces the non-operating time of batteries used among a plurality of machines, and increases the usage efficiency thereof.　A battery management device (1) comprises an acquisition unit (11) that acquires information pertaining to a plurality of machines (2), and a planning unit (12) that creates usage plans for a plurality of batteries (3) which are used among the plurality of machines (2). The acquisition unit (11) acquires operation information (P), which is information pertaining to an operation schedule of the plurality of machines (2), and on the basis of the operation information (P), the planning unit (12) creates usage plans among the plurality of machines (2) for each of the batteries (3) such that the cumulative usage time of the plurality of batteries (3) within a specified period is maximized.

Description

Battery management device and battery management program

[0001] The present invention relates to a battery management device and a battery management program for managing battery usage among a plurality of devices.

[0002] Patent Literature 1 discloses a method for reallocating portable batteries among a plurality of collection, charging, and distribution devices (hereinafter referred to as distribution devices) that collect, charge, and distribute portable batteries used by a plurality of vehicles. In this distribution device, battery replacement demand at each distribution device is analyzed from portable battery replacement information, and the reallocation of the portable batteries among the distribution devices is determined based on the analysis.

[0003] Special Publication No. 2014-527689

[0004] However, in the above-mentioned conventional technology, the usage status of each battery is not managed, so the percentage of time that the battery actually operates between the time the battery is rented and the time it is returned can vary depending on the user. In other words, the above-mentioned conventional technology has room for improvement in terms of improving the battery operation rate.

[0005] The present invention has been made in consideration of the above circumstances, and aims to reduce the idle time of a battery used by multiple devices and improve its utilization efficiency. By improving battery utilization efficiency, the present invention aims to promote the efficient use of natural resources and contribute to the realization of the SDGs for a sustainable society (SDG 12.2).

[0006] According to one aspect of the present invention, there is provided a battery management device for managing battery usage among a plurality of devices, the battery management device comprising: an acquisition unit for acquiring information about the plurality of devices; and a planning unit for creating a usage plan for the plurality of batteries to be used among the plurality of devices, wherein the acquisition unit acquires operation information that is information about operation schedules of the plurality of devices, and the planning unit creates a usage plan for the batteries among the plurality of devices based on the operation information so as to maximize the cumulative usage time of the plurality of batteries within a predetermined period. According to another aspect of the present invention, the plurality of devices include a plurality of types of devices with different uses or configurations, and the planning unit creates the usage plan so that at least one of the batteries is used in the plurality of devices of the different types within the predetermined period. According to another aspect of the present invention, the acquisition unit acquires deterioration information that is information about a deterioration state of the battery, and the planning unit selects a type of device that can use the battery based on the deterioration information, and creates a usage plan for the battery among the selected type of device. According to another aspect of the present invention, the operation information includes location information that is information about a location where the device is scheduled to be used, the acquisition unit acquires location information that is information about the location of the battery, and the planning unit creates the usage plan based on the location information and the location information so as to minimize a travel distance of the battery. According to another aspect of the present invention, the acquisition unit acquires history information that is information about an operation history of the battery in the device, and the planning unit creates the usage plan including a charging plan for the battery based on the history information. According to another aspect of the present invention, the acquisition unit acquires history information that is information about an operation history of the battery in the device, and the planning unit selects, based on the history information, either delivering the battery to the device or delivering a charging device to the device so as to maximize the cumulative usage time of the battery used in the device within the specified period, and outputs the result of the selection.Another aspect of the present invention is a battery management program that causes a computer of a battery management device that manages battery usage among multiple devices to function as an acquisition unit that acquires information about the multiple devices and a planning unit that creates a usage plan for the multiple batteries used among the multiple devices, wherein the acquisition unit acquires operation information that is information about the operation schedule of the multiple devices, and the planning unit creates a battery usage plan among the multiple devices based on the operation information so as to maximize the cumulative usage time of the multiple batteries within a predetermined period. This specification is intended to include the entire contents of Japanese Patent Application No. 2021-175616, filed on October 27, 2021.

[0007] According to the present invention, it is possible to reduce the non-operating time of a battery used by a plurality of devices and improve the utilization efficiency of the battery.

[0008] Fig. 1 is a diagram showing an example of a usage mode of a battery management device according to an embodiment of the present invention. Fig. 2 is a diagram showing an example of the configuration of the battery management device. Fig. 3 is a diagram showing an example of operation information. Fig. 4 is a diagram showing an example of an application table for selecting an applicable device for a battery based on deterioration information. Fig. 5 is a flow chart showing the operation procedure of the battery management device.

[0009] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. [1. Usage of Battery Management Device] Fig. 1 is a diagram showing an example of usage of a battery management device 1 according to this embodiment. The battery management device 1 manages battery usage among multiple devices. Here, the multiple devices may include multiple types of devices with different uses or configurations.

[0010] In this embodiment, the devices are devices 2a, 2b, 2c, 2d, 2e, 2f, 2g, and 2h owned by users U1, U2, and U3, and the batteries are detachable batteries 3a, 3b, 3c, 3d, 3e, 3f, 3g, 3h, 3j, and 3k owned by dealers D1, D2, and D3. Users U1, U2, and U3 are any users of battery-powered devices, and may be, for example, individuals or businesses.

[0011] For example, user U1 is a delivery person, device 2a is a delivery vehicle, device 2b is a shuttle vehicle, and device 2c is a warehouse security vehicle. Also, for example, user U2 is a newspaper delivery person, and devices 2d and 2e are newspaper delivery motorcycles. Also, for example, user U3 is an individual user, and device 2f is a leisure electric boat, and devices 2g and 2h are a family car and a commuter car, respectively.

[0012] The batteries 3a to 3k are charged by being connected to one of the charging devices 6a, 6b, 6c owned by the dealers D1, D2, and D3, respectively.

[0013] The battery management device 1 is communicatively connected via a communication network 7 to user terminal devices 4a, 4b, 4c of users U1, U2, U3, respectively, and dealer terminal devices 5a, 5b, 5c of dealers D1, D2, D3, respectively.

[0014] Hereinafter, users U1, U2, and U3 will be collectively referred to as user U, and dealers D1, D2, and D3 will be collectively referred to as dealer D. Furthermore, devices 2a to 2h will be collectively referred to as device 2, and batteries 3a to 3k will be collectively referred to as battery 3. Furthermore, user terminal devices 4a, 4b, and 4c will be collectively referred to as user terminal device 4, and dealer terminal devices 5a, 5b, and 5c will be collectively referred to as dealer terminal device 5. Furthermore, charging devices 6a, 6b, and 6c will be collectively referred to as charging device 6. User terminal device 4 and dealer terminal device 5 may be any terminal device, including a mobile terminal such as a smartphone.

[0015] The battery 3 stores operational information about the charging and discharging operations. The operational information includes the battery identification ID of the battery 3, the operating time from the start to the end of the charging and discharging operations, and measured values ​​of operational parameters of the battery 3 during operation, such as the terminal current, terminal voltage, and internal impedance. These operational parameters are measured inside the battery 3 during operation and stored in a memory provided in the battery 3.

[0016] The dealer terminal device 5 generates and stores history information H, which is information relating to the operation history of the battery 3 in the device 2. The history information H includes, for each battery 3, an operation history that associates an equipment identification ID that identifies the device 2 in which the battery 3 is used with the above-mentioned operating parameter measurement values ​​measured during operation of the device 2.

[0017] Specifically, when the dealer terminal device 5 lends the battery 3 to the user U, the dealer terminal device 5 stores correspondence information that associates the battery identification ID of the battery 3 with the device identification ID of the device 2 of the user U in which the battery 3 is used. The dealer terminal device 5 is communicably connected to the charging device 6, and acquires operation information from the battery 3 when the battery 3 whose lending period has expired is collected and connected to the charging device 6.

[0018] Based on the acquired operation information of the battery 3 and the stored correspondence information, the dealer terminal device 5 creates and stores history information H, which is information related to the operation history of the battery 3 in the device 2. Specifically, the history information H is composed of the operation history of each battery 3 identified by the battery identification ID. The operation history associates the measured values ​​of the operation parameters of the battery 3 during the loan period to the device 2 with the device identification ID of the device 2.

[0019] The battery management device 1 acquires information about the devices 2 and / or batteries 3 from the user terminal device 4 and / or the dealer terminal device 5, and creates a usage plan for each battery 3 owned by the dealer D based on the acquired information and transmits it to the dealer terminal device 5. The dealer D delivers the batteries 3 to the users U to whom they were rented and collects them from the users U in accordance with the usage plans received by the dealer terminal device 5. The dealer terminal device 5 acquires and stores location information S, which is information about the location of each battery 3, for example, through input from an operator of the dealer D.

[0020] 2. Configuration of the Battery Management Device The configuration of the battery management device 1 will be described with reference to Fig. 2. The battery management device 1 includes a processor 10 and a memory 20. The memory 20 is configured, for example, by a volatile and / or non-volatile semiconductor memory and / or a hard disk drive. The processor 10 is configured, for example, by one or more CPUs (Central Processing Units) or MPUs (Micro Processing Units).

[0021] The processor 10 includes, as functional elements or functional units, an acquisition unit 11 and a planning unit 12. These functional elements of the processor 10 are realized, for example, by the processor 10 executing a battery management program 21, which is a computer program stored in the memory 20. The battery management program 21 can be stored in any computer-readable storage medium.

[0022] The acquisition unit 11 acquires information about the devices 2 and / or the battery 3 from the user terminal device 4 and / or the dealer terminal device 5. Specifically, the acquisition unit 11 acquires operation information P, which is information about operation schedules of the multiple devices 2 used by the user U, from the user terminal device 4, and stores the acquired operation information P in the memory 20.

[0023] The operation information P may include, for each device 2, a device identification ID, a device type, at least one operation plan for a predetermined period, and location information that is information regarding the planned use location of the device 2. Each operation plan may be represented by an operation start time and an operation end time. Furthermore, the device type may be a type that includes information regarding the use or form of the corresponding device 2. For example, the device type may be a type name that includes use information, such as construction machinery, delivery vehicle, security vehicle, agricultural machinery, etc. Alternatively, the device type may be a type name that includes information regarding the form of the device, such as a private car, motorcycle, lawn mower, cultivator, etc.

[0024] FIG. 3 is a diagram showing an example of operation information P. In FIG. 3, the operation information P is expressed in a table format. The first column, which is the leftmost column in the table shown, indicates a device ID, the second column to the right of that indicates a device type, and the third column to the right of that indicates location information. The fourth column, which is the rightmost column, shows an operation plan for each device as a chart. In the drawing, one black rectangle shown in the fourth column corresponds to one operation plan. Note that in FIG. 3, the location information column shows one location address for each row corresponding to a device 2, but this is not limited to this. Multiple location addresses may be shown corresponding to each operation plan shown by a black rectangle.

[0025] In Fig. 3, the devices indicated by device identification IDs MID0001 to MID0008 shown in the first column correspond, for example, to devices 2a to 2h shown in Fig. 1, respectively. The operation information P in Fig. 3 indicates, for example, that device 2a having a device ID of MID0001 is a delivery vehicle and operates during the daytime from Monday to Friday (e.g., from 9:00 to 17:00). The operation information P also indicates, for example, that a security vehicle having a device ID of MID0003 operates during the nighttime from Monday to Friday (e.g., from 20:00 to 9:00 the next day).

[0026] 2 also acquires location information S, which is information relating to the location of the battery 3, from the dealer terminal device 5. Specifically, for example, while the battery 3 is being charged by the charging device 6, the location information S indicating the location of the battery 3 is location information of the dealer D corresponding to the charging device 6, and if the battery 3 is lent to the device 2 of the user U, the location information S of the battery 3 is location information of the device 2 of the user U.

[0027] The acquisition unit 11 also acquires history information H, which is information about the operation history of the battery 3 in the device 2, from the battery 3 via the dealer terminal device 5. The acquisition unit 11 further acquires deterioration information L, which is information about the deterioration state of the battery 3. The deterioration information L is, for example, the SOH (State of Health) of each battery 3. The acquisition unit 11 calculates and acquires the SOH of the battery 3 from the measured values ​​of the operation parameters included in the history information H acquired from the dealer terminal device 5 according to conventional or publicly known technology.

[0028] The acquisition unit 11 stores the acquired location information S, history information H, and deterioration information L in the memory 20 .

[0029] The planner 12 creates a usage plan for the batteries 3 used among the multiple devices 2. Specifically, based on the operation information P acquired by the acquirer 11, the planner 12 creates a usage plan for each battery 3 among the multiple devices 2 so that the cumulative usage time (i.e., total usage time) of the batteries 3 used among the devices 2 as a whole within a predetermined period is maximized. This makes it possible to improve the average operating rate of the batteries 3 used among the devices 2 as a whole within a predetermined period. Here, the operating rate refers to, for example, the ratio of the operating time of the battery 3 to the total time of the predetermined period. In other words, by creating the above-mentioned usage plan, the battery management device 1 can reduce the non-operating time of the batteries 3 used among the multiple devices 2 and improve their utilization efficiency.

[0030] When the operation information P shown in Fig. 3 is used, the predetermined period is, for example, one week. The planner 12 creates a usage plan for the batteries 3 so as to minimize the number of batteries 3 that cover the entire operation plan shown in Fig. 3 and to maximize the total usage time of those batteries 3. This can maximize the average operation rate of the batteries 3 scheduled for use.

[0031] When creating the usage plan, the planning unit 12 can create the usage plan so that at least one battery 3 scheduled for use is used in multiple devices 2 of different device types within a predetermined period. In general, devices of different types often operate at different times. Therefore, for example, by creating a usage plan so that the battery 3 is used sequentially among devices 2 of different types, the non-operating time of the battery 3 can be further reduced and its utilization efficiency can be further improved.

[0032] Furthermore, when creating the usage plan, the planner 12 selects the type of device 2 that can use the battery 3 based on the deterioration information L of the battery 3 acquired by the acquirer 11, and creates a usage plan for the battery 3 among the selected types of devices 2. For example, the planner 12 uses an application table such as that shown in Fig. 4 to select the device type to which the battery 3 can be applied based on the deterioration information L of the battery 3. In this embodiment, the deterioration information L is the SOH of the battery 3.

[0033] 4, the application table shows three SOH ranges in the first row (the top row), and the second row below shows the types of devices for which batteries 3 having SOH values ​​within the corresponding SOH ranges can be used. As an example, in this application table, as the SOH value range of the battery 3 becomes smaller (i.e., as deterioration progresses), the applicable devices for that battery 3 change from devices with high power consumption, such as four-wheeled vehicles, to devices with lower power consumption, such as bicycles.

[0034] 4 and confirms the device type to which each battery 3 can be applied from the SOH value, which is the deterioration information L of each battery 3. Then, the planner 12 creates a usage plan for each battery 3 between devices 2 of the confirmed device type. This makes it possible to make maximum use of the battery 3 as a resource and use up its performance.

[0035] Furthermore, when creating the usage plan, the planner 12 may create the usage plan so as to minimize the travel distance of the battery 3 based on the location information S acquired by the acquirer 11 and the location information included in the operation information P. This makes it possible to minimize the physical travel distance of the battery 3 during delivery and / or collection, thereby extending the operating time of the battery 3 and further improving the operating rate.

[0036] Furthermore, when creating the usage plan, the planner 12 may predict changes in the SOC (state of charge) of the battery 3 based on the history information H acquired by the acquirer 11, and create the usage plan including a charging plan for the battery 3. This makes it possible to ensure that the battery 3 is charged at an appropriate time, while lengthening the total operating time of the battery 3 used in the device 2 and improving the operating rate.

[0037] Furthermore, when creating the usage plan, the planner 12 may select either the delivery of the battery 3 to the device 2 or the delivery of a charging device so as to maximize the total operating time of the batteries 3 used in the device 2 as a whole within a predetermined period (one week in this embodiment) based on the above-mentioned history information H acquired by the acquirer 11. The planner 12 transmits and outputs the result of the selection to the dealer terminal device 5.

[0038] For example, for a device 2 whose discharge amount per hour is greater than a predetermined value, the planning unit 12 may select to deliver a charging device to the operating location of the device 2 rather than replacing the charged battery 3 based on the history information H. This makes it possible to charge the battery 3 at the operating location of the device 2 for a device 2 that may require frequent battery 3 replacement, thereby reducing the cost of delivering and / or collecting the battery 3.

[0039] The battery management unit 1 having the above configuration does not lend batteries at a timing dependent on user judgment as in the past, but creates a usage plan for each battery 3 so as to maximize the total operating time of the multiple batteries 3 used in the devices 2 within a predetermined period, based on operation information P that indicates the actual operation schedule of the devices 2. Therefore, the battery management unit 1 can reduce the non-operating time of the batteries 3 used among the multiple devices 2, thereby improving their utilization efficiency.

[0040] 3. Operation Procedure of Battery Management Unit Next, a description will be given of the operation procedure of the battery management unit 1. Fig. 5 is a flow diagram showing the operation procedure of the battery management unit 1. This process is repeatedly executed at predetermined time intervals (for example, at the same time every day).

[0041] When the process starts, the acquisition unit 11 first acquires and stores location information S and history information H from the dealer terminal device 5 (S100). At this time, the acquisition unit 11 further calculates and acquires deterioration information L from the acquired history information H and stores the acquired deterioration information L. Next, the acquisition unit 11 acquires and stores operation information P of the device 2 from the user terminal device 4 (S102). The acquisition unit 11 compares the acquired operation information P with the previously acquired operation information P and determines whether there has been a change in the operation information P (S104). Here, the previously acquired operation information P refers to the operation information P acquired in step S102 in the previous iteration of the process shown in FIG. 5.

[0042] If there is no change in the operation information P (NO in S104), the acquisition unit 11 ends this process. On the other hand, if there is a change in the operation information P (YES in S104), the planner 12 creates a usage plan for each battery 3 based on at least the operation information P (S106). In this case, the planner 12 can create the usage plan using the location information S, history information H, and deterioration information L in addition to the operation information P, as described above.

[0043] Next, the planning unit 12 transmits and outputs the created usage plan to the dealer terminal device 5 (S108), and the process ends.

[0044] [4. Other Embodiments] In the above-described embodiment, the planner 12 creates a usage plan such that the total usage time of the battery 3 used in the device 2 during a predetermined period of one week is maximized. However, the predetermined period is not limited to one week and can be any length. For example, the predetermined period may be several months or one year.

[0045] For example, if the predetermined period is one year, the planning unit 12 can create a usage plan such that the battery 3 is used sequentially among a plurality of types of equipment whose operating times vary depending on the season. This allows the usage plan to be created so that the total annual operating time of the battery 3 is maximized. Here, the plurality of types of equipment whose operating times vary depending on the season may be, for example, a rice transplanter whose operating time occurs in spring, a weeder whose operating time increases in summer, a rice harvester whose operating time occurs in autumn, a snow blower whose operating time occurs in winter, etc.

[0046] Furthermore, the dealer D that rents the battery 3 does not necessarily have to be the same dealer D that collects the battery 3. For example, the battery 3d rented from the dealer D1 can be collected by the dealer D2 and stored in the charging device 6b.

[0047] 5. Configurations Supported by the Above-described Embodiments The above-described embodiments support the following configurations.

[0048] (Configuration 1) A battery management device that manages battery usage among a plurality of devices, comprising: an acquisition unit that acquires information about the plurality of devices; and a planning unit that creates a usage plan for the plurality of batteries used among the plurality of devices, wherein the acquisition unit acquires operation information that is information about operation schedules for the plurality of devices, and the planning unit creates a usage plan for the batteries among the plurality of devices based on the operation information so as to maximize the cumulative usage time of the plurality of batteries within a predetermined period. According to the battery management device of Configuration 1, the usage plan is created based on the operation information of the devices, thereby reducing the non-operating time of the batteries used among the plurality of devices and improving their utilization efficiency.

[0049] (Configuration 2) The battery management device according to Configuration 1, wherein the plurality of devices include a plurality of types of devices with different uses or configurations, and the planning unit creates the usage plan so that at least one of the batteries is used in the plurality of devices of the different types within the predetermined period. According to the battery management device of Configuration 2, the usage plan is created so that at least one battery is used in the plurality of devices of the different types. Generally, different types of devices often operate at different times. Therefore, by creating a usage plan so that a single battery is sequentially installed in these different types of devices, it is possible to further reduce the non-operating time of the battery and further improve its utilization efficiency.

[0050] The battery management device of the present invention is configured to: (a) acquire, based on the battery capacity, the battery type of the battery that can be used by the device of the present invention;

[0051] (Configuration 4) The battery management device according to any one of configurations 1 to 3, wherein the operation information includes location information that is information about a planned location where the device is used, the acquisition unit acquires location information that is information about the location of the battery, and the planning unit creates the usage plan based on the location information and the location information so as to minimize the travel distance of the battery. The battery management device of configuration 4 can minimize the physical travel distance of the battery during delivery and / or collection, thereby extending the battery's operating time and further improving the availability rate.

[0052] (Configuration 5) The battery management device according to any one of Configurations 1 to 4, wherein the acquisition unit acquires history information that is information about an operation history of the battery in the device, and the planning unit creates the usage plan including a charging plan for the battery based on the history information. The battery management device of Configuration 5 can improve the availability by extending the operating time of the battery while ensuring appropriate charging time for the battery.

[0053] (Configuration 6) The battery management device according to any one of configurations 1 to 5, wherein the acquisition unit acquires history information that is information related to the operation history of the battery in the device, and the planning unit selects, based on the history information, either delivering the battery to the device or delivering a charging device to the device so as to maximize the cumulative usage time of the battery used in the device within the predetermined period, and outputs the result of the selection. According to the battery management device of configuration 6, for devices that may require frequent battery replacement due to high power consumption or the like, it is possible to charge the battery at the operating location of the device, thereby reducing the cost of delivering and / or collecting the battery.

[0054] (Configuration 7) A battery management program that causes a computer of a battery management device that manages battery usage among a plurality of devices to function as an acquisition unit that acquires information about the plurality of devices and a planning unit that creates a usage plan for the plurality of batteries used among the plurality of devices, wherein the acquisition unit acquires operation information that is information about the operation schedule of the plurality of devices, and the planning unit creates a usage plan for the batteries among the plurality of devices based on the operation information so as to maximize the cumulative usage time of the plurality of batteries within a predetermined period. According to the battery management program of Configuration 1, the usage plan is created based on the operation information of the devices, thereby reducing the non-operating time of the batteries used among the plurality of devices and improving their utilization efficiency.

[0055] 1...battery management device, 2, 2a, 2b, 2c, 2d, 2e, 2f, 2g, 2h...equipment, 3, 3a, 3b, 3c, 3d, 3e, 3f, 3g, 3h, 3j, 3k...battery, 4, 4a, 4b, 4d...user terminal device, 5, 5a, 5b, 5c...dealer terminal device, 6, 6a, 6b, 6c...charging device, 7...communication network, 10...processor, 11...acquisition unit, 12...planning unit, 20...memory, 21...battery management program, D, D1, D2, D3...dealer, L...deterioration information, P...operation information, S...location information, U, U1, U2, U3...user.

Claims

1. A battery management device for managing the use of batteries among a plurality of devices, an acquisition unit that acquires information about the plurality of devices, a planning unit that creates a usage plan for a plurality of batteries used among the plurality of devices, comprising: the acquisition unit acquires operation information, which is information about the operation schedule of the plurality of devices, the planning unit creates a usage plan for the plurality of batteries among the plurality of devices such that the cumulative usage time of the plurality of batteries within a predetermined period is maximized, based on the operation information, a battery management device.

2. The plurality of devices include a plurality of types of devices having different uses or forms from each other, the planning unit creates the usage plan such that at least one of the plurality of batteries is used in the plurality of devices having different types within the predetermined period, The battery management device according to claim 1.

3. the acquisition unit acquires degradation information, which is information about the degradation state of the battery, the planning unit selects the type of device for which the battery can be used based on the degradation information, and creates a usage plan for the battery among the selected type of devices, The battery management device according to claim 2.

4. the operation information includes location information, which is information about the planned usage location of the device, the acquisition unit acquires location information, which is information about the location of the battery, the planning unit creates the usage plan such that the moving distance of the battery is minimized based on the location information and the location information, The battery management device according to claim 1.

5. the acquisition unit acquires history information, which is information about the operation history of the battery in the device, the planning unit creates the usage plan including a charging plan for the battery based on the history information, The battery management device according to claim 1.

6. the acquisition unit acquires history information, which is information about the operation history of the battery in the device, the planning unit selects either the delivery of the battery to the device or the delivery of a charging device to the device such that the cumulative usage time of the battery used in the device within the predetermined period is maximized based on the history information, and outputs the result of the selection, The battery management device according to any one of claims 1 to 5.

7. A computer of a battery management device that manages the use of batteries among a plurality of devices, an acquisition unit that acquires information about the plurality of devices, and a planning unit that creates a usage plan for a plurality of batteries used among the plurality of devices, is a battery management program that functions as, the acquisition unit acquires operation information that is information about the operation schedule of the plurality of devices, the planning unit creates a usage plan for the plurality of batteries among the plurality of devices so that the cumulative usage time of the plurality of batteries within a predetermined period is the longest based on the operation information, battery management program.