Battery management system and battery management method

Abstract

A battery management system (1) comprises: a battery capacity dividing unit (11) that virtually divides the capacity of a battery (62) mounted on a moving body into a first region and a second region and enables a first user (U1) to use the battery (62) in the first region and a second user (U2) to use the battery (62) in the second region; a desired use condition recognition unit (12) that receives desired use condition information by a communication unit (40) and recognizes a desired use condition, said desired use condition information being transmitted from a use applicant terminal (210) used by a battery use applicant and presenting the desired use condition of the battery (62) in the second region; and a battery user selection unit (13) that, when the desired use condition satisfies a predetermined selection condition, selects, as the second user, the battery use applicant who has presented the desired use condition satisfying the selection condition.

Description

[Technical field]

[0001] The present invention relates to a battery management system and a battery management method. [Background technology]

[0002] Conventionally, a device has been proposed that virtually divides and manages the capacity of a battery installed in an electric vehicle into a first area used for transmitting and receiving power to and from power equipment connected to a power grid, and a second area used by the vehicle user, and displays the remaining capacity in the second area on the vehicle's meter (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2020 / 148850 Summary of the Invention [Problem to be solved by the invention]

[0004] In the above-mentioned conventional technology, the user of the vehicle and other users other than the user of the vehicle who use the virtually divided capacity of the battery are fixed, and there is no mention of the selection of other users. Therefore, there is room for improvement to more effectively utilize the battery provided in a moving body such as an electric vehicle by appropriately selecting other users. The present invention has been made in view of the above background, and has an object to provide a battery management system and a battery management method that can support more effective use of batteries installed in a mobile object. [Means for solving the problem]

[0005] As a first aspect for achieving the above-mentioned object, there is provided a battery management system including: a battery capacity division unit that virtually divides the capacity of a battery mounted on a mobile body into a first area and a second area, and assigns the first area to a first user who is a user of the mobile body and the second area to a second user other than the first user, thereby enabling the first user to use the battery in the first area and the second user to use the battery in the second area; a communication unit that communicates with a communication terminal; a desired use condition recognition unit that receives desired use condition information presenting desired use conditions of the battery in the second area via the communication unit, the desired use condition information being sent from a user terminal used by a battery user who wishes to use the battery in the second area, and recognizes the desired use conditions; and a battery user selection unit that, if the desired use conditions recognized by the desired use condition recognition unit satisfy a predetermined selection condition, selects the battery user who presented the desired use conditions that satisfy the selection condition as the second user.

[0006] In the battery management system, the selection condition may be set such that the desired condition of use includes payment of a predetermined amount or more for use of the battery in the second area.

[0007] In the above battery management system, the selection condition may be set to be, when the desired use conditions recognition unit recognizes a plurality of desired use conditions including a payment amount for use of the battery in the second area, the desired use conditions including the highest payment amount are selected.

[0008] In the battery management system, the selection condition may be set such that the desired use condition includes a desired use period of the battery in the second region that is equal to or longer than a first predetermined period.

[0009] In the above battery management system, the selection condition may be set to be the desired usage condition that includes the longest desired usage period when the desired usage condition recognition unit recognizes a plurality of desired usage conditions including a desired usage period of the battery in the second area.

[0010] In the above battery management system, the selection condition may be set so that when the desired use conditions recognition unit recognizes the desired use conditions presenting a desired capacity of the second area that requires a reduction in the capacity of the first area after the first user starts using the mobile object, the battery user selection unit transmits capacity reduction confirmation information inquiring about whether or not to reduce the first area to a first user terminal used by the first user via the communication unit, and receives capacity reduction acceptance information indicating acceptance of the reduction in capacity of the first area, which is transmitted from the desired user terminal in response to receiving the capacity reduction confirmation information, via the communication unit.

[0011] The battery management system may further include a selection condition relaxing unit that relaxes the selection condition when the desired use condition recognizing unit does not recognize the desired use condition that satisfies the selection condition.

[0012] As a second aspect for achieving the above object, there is provided a battery management method executed by a computer having a communication unit that communicates with a communication terminal, the battery management method including: a battery capacity division step for virtually dividing the capacity of a battery mounted on a mobile body into a first area and a second area, and assigning the first area to a first user who is a user of the mobile body and the second area to a second user other than the first user, thereby enabling the first user to use the battery in the first area and the second user to use the battery in the second area; a desired use condition recognition step for receiving, by the communication unit, desired use condition information presenting desired use conditions of the battery in the second area, which is transmitted from a user terminal used by a battery user who wishes to use the battery in the second area, and recognizing the desired use conditions; and a battery user selection step for selecting the battery user who presented the desired use conditions as the second user if the desired use conditions recognized by the desired use condition recognition step satisfy predetermined selection conditions. Effect of the Invention

[0013] According to the battery management system, it is possible to support more effective use of the battery mounted on the mobile object. [Brief description of the drawings]

[0014] [Figure 1] FIG. 1 is an explanatory diagram of a manner in which a battery of a vehicle is managed by a battery management system. [Diagram 2] FIG. 2 is a configuration diagram of the battery management system. [Diagram 3] FIG. 3 is an explanatory diagram of the electric power company data. [Figure 4] FIG. 4 is an explanatory diagram of a mode of selecting a user of the second region of the battery. [Diagram 5] FIG. 5 is a flowchart of a process for selecting an electric power supplier to be allocated to the second area of ​​the battery. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] [1. How the battery management system manages the vehicle battery] 1, a management mode of a battery 62 of a vehicle 60 by the battery management system 1 of this embodiment will be described. As shown in a balloon 65, the battery management system 1 virtually divides a capacity Ca of a battery 62 mounted on a vehicle 60 into a first region C1 and a second region C2, and assigns the first region C1 to a vehicle user U1 and the second region C2 to one of a plurality of power suppliers U2.

[0016] As a result, the battery management system 1 enables the vehicle user U1 to use the battery 62 in the range of the first area C1 and the power provider U2 to use the battery 62 in the range of the second area C2, supporting more effective use of the battery 62. In FIG. 1, power providers U2a, U2b, and U2c are illustrated as the power provider U2. The vehicle 60 corresponds to the moving body of the present disclosure, the vehicle user U1 corresponds to the first user of the present disclosure, and the power provider U2 corresponds to the second user and the person who wishes to use the battery 62. Note that the capacity of the battery 62 may be divided into three or more areas, and one area may be assigned to the vehicle user U1 and the other areas may be assigned to multiple power providers U2.

[0017] Vehicle 60 is an electrically powered vehicle (electric vehicle, plug-in hybrid vehicle, etc.) that uses battery 62 as a drive source, and is connected to charging / discharging equipment 51 provided in a house 50 such as the home of vehicle user U1 via a charging / discharging cable 52. Battery 62 is charged by power supplied from charging / discharging equipment 51 via charging / discharging cable 52, and also supplies power to charging / discharging equipment 51.

[0018] The charging / discharging facility 51 is connected via the power grid 100 to a plurality of power generation facilities 200 (200a to 200c) operated by the power utility U2, and supplies generated power from the power generation facilities 200 to the power grid 100. In addition, a battery 62 is charged with surplus generated power via the charging / discharging facility 51, and when the supply of generated power to the power grid 100 is insufficient, discharged power from the battery 62 is supplied to the power grid 100. The power generation facilities 200 generate power using solar panels 201 (201a to 201c). The power generation facility 200a is operated by the power utility U2a, the power generation facility 200b is operated by the power utility U2b, and the power generation facility 200c is operated by the power utility U2c.

[0019] The battery management system 1 communicates with the vehicle control device 61, the charging / discharging equipment 51, a communication terminal 70 used by a vehicle user U1, a management system 210 of an electric power provider U2, and the like via a communication network 300. The communication terminal 70 is an in-vehicle communication device including a smartphone, a mobile phone, a tablet terminal, a notebook computer, a desktop computer, a car navigation device, and the like. The communication terminal 70 corresponds to the first user terminal of the present disclosure. The management system 210 includes the functions of the intended user terminal of the present disclosure.

[0020] The battery management system 1 transmits battery management information Bmg indicating a ratio between the first region C1 and the second region C2 of the battery 62 (a capacity setting for each region) and an electric power supplier assigned to the second region C2 to the vehicle control device 61. Based on the battery management information Bmg, the vehicle control unit 61 controls the capacity of the battery 62 so that the first region C1 is subject to use by the vehicle user U1 (discharging and regenerative charging associated with power consumption in the vehicle 60, and charging from the charging / discharging equipment 51 based on the operation of the vehicle user U1), and the second region C2 is subject to use by the instructed electric power supplier U2 (charging as a buffer for power generated by the power generation equipment 200, and discharging associated with power supply to the power grid 100).

[0021] The battery management system 1 receives the desired use condition information Duc transmitted from the management system 210 of each electric power provider U2, and recognizes the desired use conditions of the second area C2 of the battery 62 presented by each electric power provider U2. Then, the battery management system 1 selects the electric power provider U2 that has presented the desired use conditions that satisfy a predetermined selection condition as a user to be assigned to the second area C2 (permitted to use the second area by rental).

[0022] Furthermore, when the desired use conditions require an increase in the capacity of the second region C2, the battery management system 1 transmits capacity reduction confirmation information inquiring about whether or not the capacity of the first region C1 can be reduced to the communication terminal 70. Then, when the battery management system 1 receives capacity reduction acceptance information Cda that accepts the reduction in the first region C1, it determines that the desired use conditions satisfy the selection conditions.

[0023] In FIG. 1, for ease of explanation, one vehicle 60 and one vehicle user U1 are shown, but the battery management system 1 performs similar adjustment processing for multiple vehicle users and multiple power suppliers regarding the divided use of batteries installed in multiple vehicles.

[0024] [2. Battery Management System Configuration] The configuration of the battery management system 1 will be described with reference to Fig. 2 to Fig. 4. With reference to Fig. 2, the battery management system 1 is a computer system including a processor 10, a memory 30, a communication unit 40, etc. The communication unit 40 communicates with a vehicle control device 61, a communication terminal 70 used by a vehicle user U1, a management system 210 (210a to 210c) of an electric power company U2 ​​(Ua2 to U2c), etc. via a communication network 300.

[0025] The memory 30 stores a control program 31 for the battery management system 1, battery management data 32 indicating the division ratio between the first area C1 and the second area C2 of the battery 62 (setting of the capacity of each area) and the power provider that uses the second area C2, selection condition data 33 indicating the selection conditions of users of the second area C2, and power provider data 34 indicating the usage conditions of the second area C2 presented by the power provider U2.

[0026] The processor 10 reads and executes the control program 31 to function as a battery capacity division unit 11, a desired use condition recognition unit 12, a battery user selection unit 13, and a selection condition relaxation unit 14. The process executed by the battery capacity division unit 11 corresponds to a battery capacity division step in the battery management method of the present disclosure, and the process executed by the desired use condition recognition unit 12 corresponds to a desired use condition recognition step in the battery management method of the present disclosure. The process executed by the battery user selection unit 13 corresponds to a battery user selection step in the battery management method of the present disclosure, and the process executed by the selection condition relaxation unit 14 corresponds to a selection condition relaxation step in the battery management method of the present disclosure.

[0027] As described above, the battery capacity division unit 11 virtually divides the capacity Ca of the battery 62 mounted on the vehicle 60 into a first region C1 allocated to the vehicle user U1 and a second region C2 allocated to the electric power provider U2, and stores battery management data 32 indicating the division ratio and the electric power provider U2 allocated to the second region C2 in the memory 30. In addition, the battery capacity division unit 11 transmits battery management information Bmg, which instructs the vehicle control device 61 to use the battery 62 divided into the first region C1 and the second region C2 based on the battery management data 32.

[0028] The desired usage conditions recognition unit 12 receives desired usage conditions information Duc indicating the desired usage conditions for the second area C2 of the battery 62, transmitted from the management system 210 of each electric power provider U2, recognizes the desired usage conditions for the second area C2 presented by each electric power provider U2, and records the data of the desired usage conditions in the electric power provider data 34.

[0029] 3, the electric power company data 34 records desired conditions of use for the second area C2 associated with the electric power company ID for each electric power company U2. The desired conditions of use for the second area C2 include a desired period of use, a desired rental fee (the price to be paid for the rental use of the second area C2), a desired capacity, etc.

[0030] The battery user selection unit 13 selects an electric power business operator U2 that has presented desired use conditions that satisfy the selection conditions from among a plurality of electric power business operators U2 (desiring users of the area C2). For example, the following first to fifth selection conditions are set as the selection conditions. First selection condition: The desired rental fee is above a specified amount. Second selection condition: Among multiple power suppliers U2 offered the highest desired rental fee. Third selection condition: The desired usage period is longer than a specified period. Fourth selection condition: Among multiple power suppliers U2, the longest desired period of use was presented. Fifth selection condition: The fifth selection condition is a selection condition when the desired use condition recognizing unit 12 recognizes a desired use condition presenting a desired capacity that requires a reduction in the capacity of the first region C1 after the vehicle user U1 starts using the vehicle 60. In this case, the battery user selecting unit 13 transmits capacity reduction confirmation information, which inquires about whether or not the first region C1 can be reduced, to the communication terminal 70 of the vehicle user U1 via the communication unit 40. Then, when the communication unit 40 receives capacity reduction acceptance information Cda, which is transmitted from the communication terminal 70 in response to the reception of the capacity reduction confirmation information and which accepts the reduction in the first region C1, the battery user selecting unit 13 determines that the desired use condition satisfies the selection condition.

[0031] The timing for the battery user selection unit 13 to assign the electric power provider U2 to the second area C2 of the battery 62 may include when the vehicle user U1 purchases the vehicle 60, after the vehicle user U1 starts using the vehicle 60, when the rental period of the assigned electric power provider U2 ends, or when a specified review period (such as every year from the time of purchase of the vehicle 60) is reached.

[0032] 4 shows an example in which, when the vehicle user U1 purchases the vehicle 60, the electric power provider U2a is selected by the battery user selection unit 13, and the electric power provider U2a is assigned as the user of the second region C2 as an initial setting by the battery capacity division unit 11. Also, A2 shows an example in which, after the vehicle user U1 starts using the vehicle 60, it becomes time to select an electric power provider U2, and the electric power provider U2b is selected by the battery user selection unit 13 as the electric power provider U2 that has presented the desired use conditions that satisfy the selection conditions.

[0033] Based on the selection by the battery user selection unit 13, the battery capacity division unit 11 changes the electric power provider U2 allocated to the second region C2 of the battery 62 from the electric power provider U2a to the electric power provider U2b.

[0034] The selection condition relaxing unit 14 relaxes the selection conditions when the desired use conditions that satisfy the selection conditions are not recognized by the desired use condition recognition unit 12. As an example of relaxing the selection conditions, the selection condition relaxing unit 14 reduces the predetermined amount in the above-mentioned first selection condition, shortens the predetermined period in the above-mentioned third selection condition, etc.

[0035] [3. Electricity supplier selection process] The process of selecting an electric power supplier executed by the battery management system 1 in the situation shown in FIGS. 1 and 2 will be described with reference to the flowchart shown in FIG.

[0036] 5, the battery user selection unit 13 advances the process to step S2 when it is time to select the electric power provider U2 to be assigned to the second region C2 of the battery 62. As described above, the selection timing is when the vehicle user U1 purchases the vehicle 60, after the vehicle user U1 starts using the vehicle 60, when the rental period for the electric power provider U2 assigned to the second region C2 has ended, when it is time to review the electric power provider U2, etc.

[0037] In step S2, the battery user selection unit 13 refers to the electric power business operator data 34 to determine whether or not there is an electric power business operator that has presented desired conditions of use that satisfy the above selection conditions. In the following step S3, if there is an electric power business operator U2 that has presented desired conditions of use that satisfy the selection conditions, the battery user selection unit 13 proceeds to step S4, and if there is no electric power business operator U2 that has presented desired conditions of use that satisfy the selection conditions, the battery user selection unit 13 proceeds to step S10.

[0038] In step S4, the battery user selection unit 13 selects the electric power provider U2 that has presented the desired usage conditions that satisfy the selection conditions as a user to be allocated to the second region C2. In the next step S5, the battery capacity division unit 11 sets the electric power provider U2 selected by the battery user selection unit 13 as a new user to be allocated to the second region C2, and updates the battery management data 32.

[0039] In the next step S6, the battery capacity division unit 11 transmits battery management information Bmg indicating the ratio between the first region C1 and the second region C2 of the battery 62 and the new electric power provider U2 assigned to the second region C2 based on the updated battery management data to the vehicle control device 61. As a result, the vehicle control device 61 that has received the battery management information Bmg executes charge / discharge control of the battery 62 in the vehicle 60 for the updated ratio between the first region C1 and the second region C2 and the electric power provider U2.

[0040] In step S10, the selection condition relaxing unit 14 relaxes the selection conditions as described above. In the following step S11, the selection condition relaxing unit 14 transmits selection condition change information notifying the relaxed selection conditions to the management system 210 of each electric power company U2. In the next step S12, the selection condition relaxing unit 14 waits for a predetermined time to elapse, and then proceeds to step S2. As a result, the processing from step S2 onward is executed again based on the relaxed selection conditions.

[0041] [4. Other embodiments] In the above embodiment, a vehicle 60 is shown as a moving body of the present disclosure, but the moving body of the present disclosure may be any body equipped with a battery that is charged and discharged by a charging and discharging facility, and may also be an aircraft, a ship, etc.

[0042] In the above embodiment, the selection condition relaxing unit 14 is provided to relax the selection condition of the electric power supplier to be allocated to the second area C2 of the battery 62, but the selection condition relaxing unit 14 may be omitted.

[0043] In the above embodiment, the battery management system 1 of the present disclosure is configured as a computer system that communicates with the vehicle 60 equipped with the battery 62. In another embodiment, the battery management system may be configured as a function of the vehicle control device 61. In this case, the configuration is such that communication is performed between the vehicle control device 61, the communication terminal 70 of the vehicle user U1, and the management system 210 of the electric power provider U2.

[0044] In the above embodiment, the selection condition for the electric power provider U2 may be set such that the electric power provider U2 using the second range C2 of the battery 62 is selected in response to an instruction from the vehicle user U1. For example, in FIG. 1, when the vehicle user U1 selects the electric power provider U2a as the electric power provider U2 using the second range C2 of the battery 62, if there is an advantage such as a discount on the unit price of the electric power supplied from the power generation facility 200a to the charging / discharging facility 51 to charge the battery 62, the vehicle user U1 can select the electric power provider U2a to enjoy this advantage.

[0045] 2 is a schematic diagram showing the functional configuration of the battery management system 1 divided according to main processing contents in order to facilitate understanding of the present invention, and the configuration of the battery management system 1 may be divided in other ways. Furthermore, the processing of each component may be executed by one hardware unit or multiple hardware units. Furthermore, the processing of each component shown in FIG. 5 may be executed by one program or multiple programs.

[0046] [5. Configuration supported by the above embodiment] The above embodiment is a specific example of the following configuration.

[0047] (Configuration 1) A battery management system comprising: a battery capacity division unit that virtually divides the capacity of a battery mounted on a mobile body into a first area and a second area, and assigns the first area to a first user who is a user of the mobile body, and assigns the second area to a second user other than the first user, thereby enabling use of the battery in the first area by the first user and use of the battery in the second area by the second user; a communication unit that communicates with a communication terminal; a desired use condition recognition unit that receives desired use condition information presenting desired use conditions of the battery in the second area via the communication unit, the desired use condition information being transmitted from a user terminal used by a battery user who wishes to use the battery in the second area, and recognizes the desired use conditions; and a battery user selection unit that, if the desired use conditions recognized by the desired use condition recognition unit satisfy a predetermined selection condition, selects the battery user who presented the desired use conditions that satisfy the selection condition as the second user. According to the battery management system of configuration 1, a second user to which the capacity of the second area of ​​the battery is allocated is selected by a battery user selection unit, thereby supporting more effective use of the battery installed in the mobile body.

[0048] (Configuration 2) The battery management system according to configuration 1, wherein the selection condition is set such that the desired conditions of use include payment of a predetermined amount or more for use of the battery in the second area. According to the battery management system of configuration 2, a prospective user who pays a large amount of the fee can be selected as the second user.

[0049] (Configuration 3) A battery management system as described in configuration 1 or 2, in which the selection condition is set such that when the desired use conditions recognition unit recognizes a plurality of desired use conditions including a payment amount for use of the battery in the second area, the desired use conditions including the highest payment amount are selected. According to the battery management system of configuration 3, the prospective user who offers to pay the highest price can be selected as the second user from among a plurality of prospective users.

[0050] (Configuration 4) A battery management system according to any one of configurations 1 to 3, wherein the selection condition is set such that the desired usage conditions include a desired usage period of the battery in the second area that is equal to or longer than a first predetermined period. According to the battery management system of configuration 4, a user who has a long desired period of use can be selected as the second user.

[0051] (Configuration 5) A battery management system according to any one of configurations 1 to 4, wherein the selection condition is set such that when the desired usage conditions recognition unit recognizes a plurality of desired usage conditions including a desired usage period of the battery in the second area, the desired usage conditions including the longest desired usage period are selected. According to the battery management system of configuration 5, the intended user who presents the longest desired usage period can be selected as the second user from among a plurality of intended users.

[0052] (Configuration 6) A battery management system described in any one of configurations 1 to 5, wherein the selection condition is set so that when the desired use conditions recognizing unit recognizes the desired use conditions presenting the desired capacity of the second area requiring a reduction in the capacity of the first area after the first user starts using the mobile body, the battery user selecting unit transmits capacity reduction confirmation information inquiring whether or not to reduce the first area to a first user terminal used by the first user via the communication unit, and receives capacity reduction acceptance information indicating acceptance of the reduction in capacity of the first area, which is transmitted from the desired user terminal in response to receiving the capacity reduction confirmation information, via the communication unit. According to the battery management system of configuration 7, when a user desires to use presents a condition of use that requires a reduction in the capacity of the first area, the user desires to use can be selected as the second user, provided that the first user accepts the condition.

[0053] (Configuration 7) A battery management system according to any one of configurations 1 to 6, further comprising a selection condition relaxation unit that relaxes the selection conditions when the desired use conditions are not recognized by the desired use condition recognition unit as satisfying the selection conditions. According to the battery management system of configuration 6, by relaxing the selection conditions, it is possible to prevent the situation in which the second user is not selected from continuing.

[0054] (Configuration 8) A battery management method executed by a computer having a communication unit that communicates with a communication terminal, the battery management method including: a battery capacity division step for virtually dividing a capacity of a battery mounted on a mobile body into a first area and a second area, and assigning the first area to a first user who is a user of the mobile body and the second area to a second user other than the first user, thereby enabling use of the battery in the first area by the first user and use of the battery in the second area by the second user; a desired use condition recognition step for receiving by the communication unit desired use condition information presenting desired use conditions of the battery in the second area, which is transmitted from a user terminal used by a battery user who wishes to use the battery in the second area, and recognizing the desired use conditions; and a battery user selection step for selecting the battery user who presented the desired use conditions as the second user if the desired use conditions recognized by the desired use condition recognition step satisfy a predetermined selection condition. By executing the battery management method of configuration 8 by a computer, the same effects as those of the battery management system of configuration 1 can be obtained. [Explanation of symbols]

[0055] 1... battery management system, 10... processor, 11... battery capacity division unit, 12... desired use condition recognition unit, 13... battery user selection unit, 14... selection condition relaxation unit, 30... memory, 31... control program, 32... battery management data, 33... selection condition data, 34... power company data, 40... communication unit, 50... house, 51... charging / discharging equipment, 52... charging / discharging cable, 60... vehicle (mobile body), 61... vehicle control device, 62... battery, 63...vehicle display unit, 70...communication terminal (first user terminal), 100...power grid, 200 (200a to 200c)...power generation equipment, 201 (201a to 201c)...solar panels, 210 (210a to 210c)...power company's management system (want-to-use terminal), 300...communication network, U1...vehicle user (first user), U2 (U2a to U2c)...power company (want-to-use, second user), C1...first area, C2...second area.

Claims

1. a battery capacity division unit that virtually divides a capacity of a battery mounted on a mobile body into a first region and a second region, and assigns the first region to a first user who is a user of the mobile body and assigns the second region to a second user other than the first user, thereby enabling the first user to use the battery in the first region and the second user to use the battery in the second region; A communication unit that communicates with a communication terminal; a desired use condition recognition unit that receives, via the communication unit, desired use condition information presenting desired use conditions of the battery in the second area, the desired use condition information being transmitted from a user desirer terminal used by a battery user who desires to use the battery in the second area, and recognizes the desired use conditions; a battery user selection unit that selects, when the desired use conditions recognized by the desired use condition recognition unit satisfy a predetermined selection condition, the battery user who has presented the desired use conditions that satisfy the selection condition as the second user; A battery management system comprising:

2. The selection condition is set such that the desired condition of use includes payment of a predetermined amount or more for the use of the battery in the second area. The battery management system of claim 1 .

3. The selection condition is set so that, when the desired use condition recognition unit recognizes a plurality of desired use conditions including a payment amount for the use of the battery in the second area, the desired use condition including the highest payment amount is selected. The battery management system according to claim 1 or 2.

4. The selection condition is set so that the desired use condition includes a desired use period of the battery in the second region that is equal to or longer than a first predetermined period. The battery management system according to any one of claims 1 to 3.

5. The selection condition is set so that, when the desired use condition recognition unit recognizes a plurality of desired use conditions including a desired use period of the battery in the second area, the desired use condition including the longest desired use period is selected. The battery management system according to any one of claims 1 to 4.

6. The selection condition is set so that, when the desired use condition recognizing unit recognizes the desired use condition presenting the desired capacity of the second area requiring a capacity reduction of the first area after the first user starts using the mobile body, the battery user selecting unit transmits, via the communication unit, capacity reduction confirmation information inquiring whether or not the first area should be reduced to a first user terminal used by the first user, and receives, via the communication unit, capacity reduction acceptance information indicating acceptance of the capacity reduction of the first area, which is transmitted from the would-be user terminal in response to the reception of the capacity reduction confirmation information. The battery management system according to any one of claims 1 to 5.

7. a selection condition relaxing unit that relaxes the selection condition when the desired use condition recognizing unit does not recognize the desired use condition that satisfies the selection condition. The battery management system according to any one of claims 1 to 6.

8. A battery management method executed by a computer having a communication unit that communicates with a communication terminal, a battery capacity division step of virtually dividing a capacity of a battery mounted on a mobile body into a first region and a second region, allocating the first region to a first user who is a user of the mobile body, and allocating the second region to a second user other than the first user, thereby enabling the first user to use the battery in the first region and the second user to use the battery in the second region; a desired use condition recognition step of receiving, by the communication unit, desired use condition information presenting a desired use condition of the battery in the second area, the desired use condition information being transmitted from a user desirer terminal used by a battery user who desires to use the battery in the second area, and recognizing the desired use condition; a battery user selection step of selecting, as the second user, the battery user who has presented the desired use conditions when the desired use conditions recognized in the desired use condition recognition step satisfy a predetermined selection condition; 23. A battery management method comprising:

Images