Battery management system, battery management method and program

Abstract

To provide a battery management system, a battery management method, and a program, enabling an appropriate secondary battery to be used according to deterioration and chargeable capacity of secondary batteries.SOLUTION: A battery management system comprises: a battery state acquisition unit (22) for acquiring, as secondary battery information, identification information for determining and identifying a secondary battery and electric characteristic information that is an electric characteristic at the time of connection, charging, or discharging of the secondary battery; a battery capacity authentication unit (23) that on the basis of the electric characteristic information, calculates chargeable capacity of the secondary battery and authenticates it as authenticated capacity; a battery management database unit (24) that is included in a management server (20) and records the identification information in association with the authenticated capacity; a user management database (25) for recording user information associated with a user of the secondary battery in association with the identification information; and a user information change unit (26) for changing association between the user information and the identification information.SELECTED DRAWING: Figure 1

Description

[Technical Field]

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

[0002] In recent years, electric vehicles, hybrid cars, and electric motorcycles that use electricity as a power source for vehicles such as automobiles and motorcycles and convert the electricity supplied from secondary batteries into kinetic energy have become increasingly popular. Furthermore, the popularity of electrically assisted bicycles, which use electricity as an auxiliary power source for bicycles, is also increasing.

[0003] These vehicles run on power stored in secondary batteries installed on the vehicle, and their cruising range is determined by the chargeable capacity of the secondary batteries. Increasing the range of a vehicle would be an effective way to increase the battery's capacity, but this would also increase the weight of the secondary battery, resulting in reduced energy efficiency. To address this issue, a battery swap system has been proposed in which a secondary battery is detachably attached to the vehicle and a battery with a low chargeable capacity is replaced with a fully charged one, thereby extending the vehicle's range.

[0004] In the battery swap system, multiple secondary batteries are charged and stored at a battery station, and users bring their mobile devices to exchange their used secondary batteries for them, collecting battery exchange and leasing fees. The exchanged used secondary batteries are then fully charged at the battery station and are reused the next time the user uses the device. However, it is known that the chargeable capacity of secondary batteries deteriorates depending on the usage environment and usage history, and even a fully charged secondary battery has a lower chargeable capacity than a new battery. Therefore, the battery swap system requires battery management that takes secondary battery deterioration into account.

[0005] For example, Patent Document 1 describes an operation server connected to a battery exchange device via a network that measures the number of times a secondary battery is charged to manage its deterioration, and removes secondary batteries that have been charged a predetermined number of times or more from the list of batteries available for rental. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Patent No. 6708805 Summary of the Invention [Problem to be solved by the invention]

[0007] However, in the prior art described in Cited Document 1, although the operation server can set a lower limit for the chargeable capacity of the secondary battery permitted for rental, the user cannot grasp the actual chargeable capacity and driving range of the rented secondary battery. Therefore, it is difficult for the user to continue driving beyond the set lower limit of capacity, and the user has to replace the secondary battery even when there is still ample remaining power. Furthermore, because secondary batteries vary depending on manufacturing conditions and usage conditions, it is difficult to accurately grasp the chargeable capacity by managing deterioration based on the number of charging times.

[0008] Furthermore, even if the user's intended vehicle travel distance is short and a small remaining battery level is sufficient, only secondary batteries that exceed the lower limit set by the operation server are loaned out, making it difficult to make full use of the secondary batteries.

[0009] Therefore, the present invention has been made in consideration of the above-mentioned conventional problems, and aims to provide a battery management system, battery management method, and program that can use an appropriate secondary battery depending on the deterioration of the secondary battery and its chargeable capacity. [Means for solving the problem]

[0010] In order to solve the above problems, the battery management system of the present invention is a battery management system that charges and discharges secondary batteries connected to a battery station and manages the secondary batteries using a management server that is communicatively connected to the battery station, and is characterized by comprising: a battery status acquisition unit that acquires, as secondary battery information, identification information that identifies and identifies the secondary battery and electrical characteristic information that is the electrical characteristics of the secondary battery when connected, charged, or discharged; a battery capacity authentication unit that calculates the chargeable capacity of the secondary battery based on the electrical characteristic information and authenticates it as an authenticated capacity; a battery management database unit that is provided in the management server and records the identification information and the authenticated capacity in association with each other; a user management database that records user information related to the user of the secondary battery in association with the identification information; and a user information change unit that changes the association between the user information and the identification information.

[0011] In the battery management system of the present invention, the chargeable capacity of the secondary battery is calculated based on the electrical characteristic information obtained from the secondary battery and authenticated as the certified capacity, thereby accurately understanding the deterioration and chargeable capacity of the secondary battery and enabling appropriate use of the secondary battery. In one aspect of the present invention, the user information change unit changes the association between the user information and the identification information based on the authentication capacity.

[0012] In one aspect of the present invention, a user terminal is provided that is communicatively connected to the battery station or the management server, and the user information change unit changes the association between the user information and the identification information based on input results from the user terminal.

[0013] In one aspect of the present invention, a distribution server is provided that is communicatively connected to the management server, and the distribution server includes a presentation unit that presents the authenticated capacity of the secondary battery identified by the identification information to other users, and a reception unit that receives acquisition request information from the other users, and the user information change unit changes the association between the user information and the identification information based on the acquisition request information.

[0014] In one aspect of the present invention, the electrical characteristic information includes any of full charge voltage, full discharge voltage, open circuit voltage, closed circuit voltage, charge characteristics, discharge characteristics, internal resistance, temperature characteristics, load characteristics, cycle usage history information, or impedance.

[0015] In one aspect of the present invention, the battery management database records multiple dates and times when the electrical characteristic information was acquired and the identification information, and the battery capacity authentication unit authenticates the authenticated capacity based on changes in the electrical characteristic information over time.

[0016] The battery management method of the present invention is characterized by comprising a battery status acquisition process for acquiring, as secondary battery information, identification information that specifies and identifies a secondary battery and electrical characteristic information that is the electrical characteristics of the secondary battery when connected, charged, or discharged; a battery capacity authentication process for calculating the chargeable capacity of the secondary battery based on the electrical characteristic information and authenticating it as an authenticated capacity; a battery data management process for recording the identification information in association with the authenticated capacity; a user management process for recording user information related to the user of the secondary battery in association with the identification information; and a user information change process for changing the association between the user information and the identification information.

[0017] The program of the present invention is characterized in that it causes a computer to execute the following steps: a battery status acquisition procedure for acquiring, as secondary battery information, identification information that specifies and identifies a secondary battery, and electrical characteristic information that is the electrical characteristics of the secondary battery when connected, charged, or discharged; a battery capacity authentication procedure for calculating the chargeable capacity of the secondary battery based on the electrical characteristic information and authenticating it as an authenticated capacity; a battery data management procedure for recording the identification information in association with the authenticated capacity; a user management procedure for recording user information related to the user of the secondary battery in association with the identification information; and a user information change procedure for changing the association between the user information and the identification information. [Effects of the Invention]

[0018] The present invention can provide a battery management system, a battery management method, and a program that can appropriately use a secondary battery depending on the deterioration of the secondary battery and the chargeable capacity of the secondary battery. [Brief explanation of the drawings]

[0019] [Figure 1] 1 is a block diagram schematically illustrating a configuration of a battery management system 100 according to a first embodiment. [Figure 2] 1 is a block diagram schematically illustrating the configuration of a battery 40 that is to be managed by a battery management system 100 according to a first embodiment. [Figure 3] 1 is a schematic diagram showing an example of a usage form of a battery management system 100 according to a first embodiment. [Figure 4] 3 is a flowchart showing the procedure of a battery management method according to the first embodiment. [Figure 5] FIG. 10 is a block diagram schematically illustrating a configuration of a battery management system 110 according to a second embodiment. [Figure 6] 10 is a flowchart showing a procedure for battery circulation in a battery management method according to a second embodiment. [Figure 7] FIG. 10 is a schematic diagram showing an overview of an autonomous battery station 10 according to a third embodiment. [Figure 8] FIG. 10 is a schematic diagram showing an overview of a battery exchange area 1000 according to a fourth embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0020] (First embodiment) Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. The same or equivalent components, members, and processes shown in each drawing will be assigned the same reference numerals, and redundant explanations will be omitted where appropriate. FIG. 1 is a block diagram showing a schematic configuration of a battery management system 100 according to this embodiment. As shown in FIG. 1, the battery management system 100 includes a battery station 10, a management server 20, and a user terminal 30, all of which are connected to each other so that they can communicate information with each other.

[0021] Battery station 10 is a device that receives an external power supply and is connected to a battery (secondary battery) described below to charge and discharge the battery and grant permission for use to users. As shown in Fig. 1, battery station 10 includes an information communication unit 11, a battery connection unit 12, a charge / discharge unit 13, a battery management unit 14, an operation unit 15, and a display unit 16. The form of battery station 10 is not limited, and it may be a device with a large housing set up in a public place, or a small device installed in each home.

[0022] The information communication unit 11 is a part that communicates information with the outside of the battery station 10. There are no limitations on the configuration of the information communication unit 11, and it may be connected via a wired or wireless connection, and there are no limitations on the communication protocol used, and any known protocol can be applied. Furthermore, the path through which the information communication unit 11 communicates information can be any known communication path such as an optical fiber network, a satellite communication network, a telephone line network, or a mobile communication network.

[0023] The battery connection unit 12 is a part that ensures at least an electrical connection with a battery, which will be described later, and connecting a battery to the battery connection unit 12 enables the exchange of power between the battery station 10 and the battery. The battery connection unit 12 is also preferably equipped with a locking mechanism that restricts the attachment and detachment of the battery. While FIG. 1 shows an example in which one battery connection unit 12 is provided in the battery station 10, multiple battery connection units 12 may be provided in one battery station 10.

[0024] The charging / discharging unit 13 controls the exchange of power with the battery connected to the battery connection unit 12, and charges and discharges the battery. Here, charging and discharging the battery refers to at least supplying power to the battery to perform a charging operation, and may also include a discharging operation in which power stored in the battery is consumed and extracted. The power extracted during the battery discharge operation may be supplied to the outside of the battery station 10 from a separately provided output unit.

[0025] The battery management unit 14 stores information about the battery connected to the battery connection unit 12 and the operating status of the charging / discharging unit 13, and also controls the removal of the battery 40 from the battery connection unit 12 and the charging / discharging operation of the charging / discharging unit 13.

[0026] The operation unit 15 is an input device that allows the user or operator to control the operation of the battery station 10. There are no limitations on the configuration of the operation unit 15, and known devices such as levers, buttons, dials, a mouse, a keyboard, and touch panel input devices can be used. By operating the operation unit 15, the user or operator can perform operations such as attaching and detaching batteries, charging and discharging, selecting an action from presented options, and paying fees.

[0027] The display unit 16 is a part that displays information managed by the battery management unit 14 and options for selecting an action, and can be a known image display device. The specific configuration of the display unit 16 is not limited, and known devices such as a liquid crystal display device and an organic EL display device can be used. When a touch panel input device is used as the operation unit 15, the display function of the display unit 16 may be incorporated into the operation unit 15.

[0028] The management server 20 is an information processing device that is connected to a plurality of battery stations 10 and a plurality of user terminals 30 so as to be able to communicate information with them, and that manages batteries in accordance with a predetermined procedure. As shown in Fig. 1, the management server 20 includes an information communication unit 21, a battery status acquisition unit 22, a battery capacity authentication unit 23, a battery management database unit 24, a user management database unit 25, and a user information change unit 26.

[0029] The information communication unit 21 is a part that communicates information with the outside of the management server 20. There are no limitations on the configuration of the information communication unit 21, and it may be connected via a wired or wireless connection, and there are no limitations on the communication protocol used, and any known protocol can be applied. Furthermore, the path through which the information communication unit 21 communicates information can be any known communication path such as an optical fiber network, a satellite communication network, a telephone line network, or a mobile communication network.

[0030] The battery status acquisition unit 22 is a unit that acquires information about the battery connected to the battery connection unit 12 as secondary battery information. The secondary battery information includes identification information that specifies and identifies the connected battery, and electrical characteristic information that indicates the electrical characteristics of the battery when it is connected, charged, or discharged. The battery status acquisition unit 22 acquires the secondary battery information by transmitting information about the status and operation of the battery connection unit 12, the charge / discharge unit 13, and the battery management unit 14 from the information communication unit 11 via the information communication unit 21. While FIG. 1 shows an example in which the battery status acquisition unit 22 is provided in the management server 20, the battery station 10 may also be provided with the battery status acquisition unit 22. In this case, the secondary battery information acquired by the battery status acquisition unit 22 is transmitted from the information communication unit 11 via the information communication unit 21 to the management server 20.

[0031] The battery capacity authentication unit 23 calculates the chargeable capacity of the battery and authenticates it as the authenticated capacity based on the electrical characteristic information included in the secondary battery information acquired by the battery status acquisition unit 22. Here, the chargeable capacity refers to the amount of power that can be extracted from the battery from full charge to full discharge when full charge and full discharge are set.

[0032] The battery management database unit 24 is a database that associates and records identification information given to each battery with the authenticated capacity calculated and authenticated by the battery capacity authentication unit 23. The user management database unit 25 is a database that associates and records user information related to the user of the battery with identification information given to each battery. The user information change unit 26 is a part that changes the association between user information and identification information based on various information described below and records the changed association in the user management database unit 25.

[0033] The user terminal 30 is an information device operated by a battery user, and is connected to the battery station 10 and the management server 20 so as to be capable of communicating with each other, and is a device for displaying information and inputting operations. The user terminal 30 corresponds to the user terminal of the present invention. As shown in FIG. 1 , the user terminal 30 includes an information communication unit 31, an input / output unit 32, a display unit 33, and a storage unit 34. The form of the user terminal 30 is not limited, and known devices such as a mobile phone terminal, a portable computer, or a fixed computer can be used. The user terminal 30 may also be integrated with the battery station 10, or may be integrated and mounted on a mobile object powered by the battery 40.

[0034] The information communication unit 31 is a part that communicates information with the outside of the user terminal 30. There are no limitations on the configuration of the information communication unit 31, and it may be connected via a wired or wireless connection, and there are no limitations on the communication protocol used, and any known protocol can be applied. Furthermore, the path through which the information communication unit 31 communicates information can be any known communication path such as an optical fiber network, a satellite communication network, a telephone line network, or a mobile communication network.

[0035] The input / output unit 32 is a device through which a user inputs predetermined commands and outputs information. The form of the input / output unit 32 is not limited, and known input / output devices such as levers, buttons, dials, mice, keyboards, touch panel input devices, speakers, indicators, etc. can be used.

[0036] The display unit 33 is an image display device that presents images and text information to the user. The specific configuration of the display unit 33 is not limited, and known devices such as a liquid crystal display device and an organic EL display device can be used. When a touch panel input device is used as the input / output unit 32, the display function of the display unit 33 may be incorporated into the input / output unit 32.

[0037] The storage unit 34 is a storage device that includes a recording medium from which information can be read and written, and that records data exchanged via the information communication unit 31, programs that cause the user terminal 30 to execute predetermined procedures, etc. The recording medium included in the storage unit 34 may be a known one such as a magnetic recording medium, a magneto-optical recording medium, an optical recording medium, or a non-volatile memory element.

[0038] The functions of each part of the above-mentioned battery station 10, management server 20, and user terminal 30 are realized by hardware that performs predetermined operations, a central processing unit (CPU), and a storage device that executes predetermined programs.

[0039] Fig. 2 is a block diagram showing a schematic configuration of a battery 40 to be managed by the battery management system 100 according to this embodiment. As shown in Fig. 2, the battery 40 includes a secondary battery cell 41, a BMS (Battery Management System) 42, a station connection unit 43, a storage unit 44, and an information communication unit 45. The battery 40 according to this embodiment is connected to the battery connection unit 12 of the battery station 10 to be charged and discharged, and is removed from the battery station 10 and attached to a mobile object to supply power to the mobile object, and corresponds to the secondary battery according to the present invention.

[0040] The secondary battery cell 41 is a component that packages an electrolyte that stores and releases electric charge through electrochemical reactions, positive and negative electrodes, a separator, and the like. The battery 40 contains multiple secondary battery cells 41, which are connected in series or parallel to each other to obtain the desired output. The electrolyte that constitutes the secondary battery cell 41 is not limited, and known materials such as various lithium-ion batteries, nickel-metal hydride batteries, and nickel-zinc batteries can be used. The electrolyte may be either liquid or solid.

[0041] The BMS 42 is a component electrically connected to the outside of the battery 40 and the secondary battery cells 41, and controls the charging and discharging of the secondary battery cells 41. The BMS 42 measures the voltage and current values ​​of each secondary battery cell 41, records the charging history, discharging history, etc., and controls the connection between the outside and the secondary battery cells 41 based on this information.

[0042] The station connection part 43 is a part that ensures at least an electrical connection with the battery connection part 12 of the battery station 10, and connecting the station connection part 43 to the battery connection part 12 enables the exchange of power between the battery station 10 and the battery. In addition, the station connection part 43 preferably includes a mechanical connection part that corresponds to the locking mechanism provided in the battery connection part 12.

[0043] The storage unit 44 is a storage device that includes a recording medium from which information can be read and written, and that records data exchanged via the information communication unit 45 and identification information for identifying each battery 40. The recording medium included in the storage unit 44 may be a known one such as a magnetic recording medium, a magneto-optical recording medium, an optical recording medium, or a nonvolatile memory element.

[0044] The information communication unit 45 is a part that communicates information acquired by the BMS 42 and information recorded in the memory unit 44 with the battery station 10 connected via the station connection unit 43. Alternatively, a wired or wireless communication device may be used as the information communication unit 45, and information may be directly communicated with the battery station 10 and the management server 20.

[0045] 3 is a schematic diagram showing an example of how the battery management system 100 according to this embodiment is used. A user 50 who uses a battery 40 brings a used battery 40 to the battery station 10 and connects the battery connector 12 to the station connector 43. The battery station 10 charges and discharges the connected battery 40 and manages the battery 40 by communicating information with the management server 20. The user 50 also operates a user terminal 30 to communicate information between the battery station 10 and the management server 20 and perform input operations required for managing the battery 40.

[0046] 3, the battery station 10 is provided with a plurality of storage sections for storing batteries 40, and storing a battery 40 in a storage section automatically connects the battery connection section 12 to the station connection section 43. Furthermore, mechanical attachment and detachment of the battery 40 stored in a storage section is restricted by a locking mechanism, and the battery 40 can be removed from the storage section by releasing the locking mechanism in accordance with an attachment / detachment instruction from the battery management section 14. At this time, the battery 40 to be unlocked by the battery management section 14 may be different from the battery 40 that the user 50 brought with them immediately beforehand, and the user 50 can receive a charged battery 40 from the battery station 10.

[0047] Here, when the state in battery 40 where BMS 42 activates the overcharge protection function and stops charging is defined as fully charged (100%), and when BMS 42 activates the overdischarge protection function and stops discharging is defined as fully discharged (0%), the amount of power required to charge battery 40 from fully discharged (0%) to fully charged (100%) is the capacity that can be charged into battery 40. Also, when the chargeable capacity of battery 40 in a new state is defined as new capacity, and the chargeable capacity after battery 40 has been used is defined as deteriorated capacity, the deterioration rate is the ratio of deteriorated capacity to new capacity.

[0048] Fig. 4 is a flowchart showing the steps of the battery management method according to this embodiment. As shown in Fig. 3, this management method starts when a user 50 charges a used battery 40 in the battery station 10. Triggers for starting the method include when it is detected that a battery 40 has been inserted into a storage compartment of the battery station 10, when it is detected that the battery connector 12 has come into contact with the station connector 43, or when the user 50 inputs a request by operating the input / output unit 32 or the operation unit 15.

[0049] Step S1 is a battery connection process that ensures electrical connection between the battery connection unit 12 and the station connection unit 43. As described above, when an operation such as storing a battery 40 in a storage unit is performed, the battery management unit 14 checks for continuity between the battery connection unit 12 and the station connection unit 43, and if it confirms that they are electrically connected through continuity, the process proceeds to step S2. If the battery station 10 is equipped with a locking mechanism, the battery management unit 14 activates the locking mechanism for the battery 40 to be managed, thereby restricting removal of the battery 40. The specific configuration of the locking mechanism is not limited.

[0050] Step S2 is a battery information acquisition step of acquiring secondary battery information from the connected battery 40 and acquiring information about the user 50 who used the battery 40 as user information. The battery information acquisition step corresponds to part of the battery status acquisition step of the present invention. The battery management unit 14 acquires the identification information recorded in the memory unit 44 of the battery 40 and the full charge voltage and full discharge voltage values ​​set in the BMS 42 as part of the electrical characteristic information, and transmits them to the battery status acquisition unit 22.

[0051] Furthermore, the battery management unit 14 associates the identification information of the battery 40 with the user information and records them in the user management database unit 25 (user management step). After the battery state acquisition unit 22 acquires the identification information and electrical characteristic information, the process proceeds to step S3. The specific method by which the battery management unit 14 acquires the identification information and electrical characteristic information is not limited, and it may be possible to enable information communication between the battery connection unit 12 and the station connection unit 43, or to use wireless information communication between the information communication unit 11 on the battery station 10 side and the information communication unit 45 on the battery 40 side, and to communicate information directly or indirectly between them.

[0052] Step S3 is a charge / discharge step for charging or discharging the secondary battery cells 41 of the battery 40. In this step, the battery management unit 14 controls the driving of the charge / discharge unit 13 to supply power to the secondary battery cells 41 via the battery connection unit 12 and the station connection unit 43, thereby charging the secondary battery cells 41. Before the charging operation, a discharge operation may be performed for refresh charging, or a short-term discharge operation may be performed to acquire discharge characteristics. After the charge / discharge unit 13 starts charging or discharging, the process proceeds to step S4. The charge / discharge step continues even after the process proceeds to step S4. Here, the circuit configuration and drive control method of the charge / discharge unit 13 are not limited, and known charge / discharge circuits and charge / discharge operations can be used.

[0053] Step S4 is a step performed in parallel with the charge / discharge process, and is a charge / discharge characteristic acquisition step for acquiring the electrical characteristics of the battery 40 during charging or discharging as part of the electrical characteristic information. The charge / discharge characteristic acquisition step corresponds to part of the battery state acquisition step of the present invention. In parallel with the execution of the charge / discharge process, the battery management unit 14 acquires the voltage value of the secondary battery cell 41 and the current value during charging / discharging as part of the electrical characteristic information, and transmits this to the battery state acquisition unit 22. Examples of the electrical characteristic information acquired by the battery management unit 14 include open-circuit voltage, closed-circuit voltage, charge characteristics, discharge characteristics, internal resistance, temperature characteristics, load characteristics, cycle use history information, and impedance. After the battery state acquisition unit 22 acquires the electrical characteristic information, the process proceeds to step S5.

[0054] Step S5 is a battery state determination step for determining the state of the battery 40 based on the electrical characteristic information of the battery 40. The battery state acquisition unit 22 associates the identification information and electrical characteristic information of the battery 40 acquired in the battery information acquisition step and the charge / discharge characteristic acquisition step with the acquisition date and time, and records them in the battery management database unit 24. The battery capacity authentication unit 23 calculates the deterioration state of the secondary battery cells 41 included in the battery 40 based on the electrical characteristic information recorded in the battery management database unit 24, and records this as deterioration information in association with the identification information in the battery management database unit 24. After the battery capacity authentication unit 23 has associated and recorded the deterioration information and the identification information, the process proceeds to step S6.

[0055] Here, the battery capacity authentication unit 23 may calculate the degradation state based on a predetermined function using parameters such as full charge voltage, full discharge voltage, open circuit voltage, closed circuit voltage, charge characteristics, discharge characteristics, internal resistance, temperature characteristics, load characteristics, cycle use history information, or impedance information included in the electrical characteristic information. In this case, multiple parameters included in the electrical characteristic information may be used. Alternatively, the calculation may be based on changes in the electrical characteristic information over time, with reference to multiple pieces of electrical characteristic information acquired at different times. Furthermore, the function used to calculate the degradation state may be preset, or an approximate function may be found by machine learning.

[0056] Furthermore, as the identification information of the battery 40, not only the individual identification number of the secondary battery cell 41 but also additional information such as the manufacturer, specification information, model of the device used, etc. may be recorded, and the deterioration state may be calculated by adding this additional information to the electrical characteristic information. Here, calculating the deterioration state means determining the relationship between the actual discharge capacity and discharge voltage at the present time, which is different from the discharge characteristics set when the battery 40 was new.

[0057] In this embodiment, the battery capacity authentication unit 23 of the management server 20 calculates the authenticated capacity of multiple batteries 40 housed in multiple battery stations 10 based on electrical characteristic information at the time of connection, charging, or discharging. This improves the accuracy of calculating the chargeable capacity of the battery 40.

[0058] Step S6 is a battery capacity authentication step for authenticating the chargeable capacity of the battery 40. The battery capacity authentication unit 23 determines the current chargeable capacity of the battery 40 from the deterioration state of the battery 40 calculated in the battery state determination step, and records this as the authenticated capacity in the battery management database unit 24 in association with the identification information. After the authenticated capacity is recorded, the process proceeds to step S7. Furthermore, based on the authenticated capacity authenticated by the battery capacity authentication unit 23, the battery management unit 14 may update the information in the BMS 42 of the battery 40 and set new overdischarge voltage and overcharge voltage. Here, the battery state determination step and the battery capacity authentication step have been described as separate steps, but both steps may also be combined into a battery capacity authentication step.

[0059] Step S7 is an option presentation step that presents the next battery 40 that the user 50 will use. The battery management unit 14 of the battery station 10 acquires the identification information and authenticated capacity information recorded in the battery management database unit 24 for the multiple batteries 40 housed in the housing unit, and displays the authenticated capacity of each battery 40 on the display unit 16. This allows the user 50 to understand the authenticated capacity of the batteries 40 housed in the housing unit of the battery station 10, and to know the charge capacity of each battery 40, i.e., how much it can actually be used. After the authenticated capacity has been presented to the user 50, the process proceeds to step S8.

[0060] Although an example has been shown in which the authenticated capacity of each battery 40 is displayed on the display unit 16, the authenticated capacity may also be displayed on the display unit 33 of the user terminal 30 via the information communication units 11 and 31. Furthermore, the model of the vehicle being used and the cruising distance per charge capacity may be recorded in advance in the user management database unit 25 as part of the user information, and in the option presentation step, the possible cruising distance may be calculated based on the authenticated capacity and the user information, and the possible cruising distance may be presented at the same time as the authenticated capacity.

[0061] Step S8 is a selection step in which an action is selected from the presented options and executed. The user 50 checks the certified capacities of the multiple batteries 40 presented on the display unit 16 or the display unit 33 and inputs which battery 40 to use via the operation unit 15 or the input / output unit 32. The battery management unit 14 transmits the identification information of the selected battery 40 and the user information to the user information change unit 26 via the information communication units 11 and 21. The user information change unit 26 rewrites the identification information of the battery 40 recorded in the user management database unit 25 in association with the user information to that of the selected input result. The battery management unit 14 also releases the lock mechanism of the selected battery 40 and displays a message on the display unit 16 instructing the user to remove the battery 40.

[0062] In this embodiment, the option presenting step and the selection step correspond to the user information changing step in the present invention, since the association between the user information and the identification information is changed based on the authentication capacity of the battery 40.

[0063] As described above, in this embodiment, the battery capacity authentication unit 23 authenticates the authenticated capacity based on the electrical characteristic information of the battery 40 acquired by the battery state acquisition unit 22, notifies the user 50 of the authenticated capacity, and then presents the battery 40 to be replaced. Therefore, the user 50 can appropriately select a battery 40 with the required authenticated capacity depending on the expected usage situation and cruising distance. For example, if the planned travel distance is long, a battery 40 with a degradation rate of less than 10% can be selected, and if only a short-distance trip is required in an emergency, a battery 40 with a degradation rate of about 30% can be selected. This allows the use of an appropriate battery 40 depending on the degradation of the battery 40 and the chargeable capacity. (Modification 1 of the first embodiment)

[0064] In the battery management system and battery management method shown in Figures 1 to 4, after the battery capacity authentication unit 23 authenticates the authenticated capacity of the battery 40, the user 50 selects the next battery 40 to use from a selection of options, but the selection may also be made automatically according to predetermined conditions.

[0065] In this modification, the user 50 uses the operation unit 15 or the input / output unit 32 to input in advance the conditions of the battery 40 to be selected as usage condition information, and the usage condition information is recorded in the user management database unit 25 as part of the user information. Examples of usage condition information include an authenticated capacity of 70% or more and a continuous driving distance of 50 km or more. When the continuous driving distance is used as the usage condition information, the cruising distance per charge capacity of the mobile object in which the user 50 rides is included in the user information and recorded in advance.

[0066] In the battery capacity authentication process of step S6, after authenticating the authentication capacity of the battery 40 accommodated in the battery station 10, the user information change unit 26 refers to the usage condition information of the user 50 recorded in the user management database unit 25, selects a battery 40 with an authentication capacity that meets the conditions of the usage condition information from the battery management database unit 24, and acquires its identification information. Next, the user information change unit 26 associates the identification information of the selected battery 40 with the user information and updates the user management database unit 25.

[0067] In this modified example, the authentication capacity condition is set as usage condition information, and a battery 40 is selected based on the authentication capacity, and the association between user information and identification information is changed. This makes it possible to select a battery 40 that suits the requirements of the user 50, and to use an appropriate battery 40 depending on the deterioration of the battery 40 and the chargeable capacity. (Modification 2 of the first embodiment)

[0068] In the battery management system and battery management method shown in Figures 1 to 4, the certified capacity is presented to the user 50 and included in the options regardless of the deterioration rate of the battery 40, but batteries 40 that have deteriorated more than a predetermined deterioration rate may be removed from the options and collected.

[0069] In this modification, user information of the collector is recorded in advance in the user management database unit 25, and collection conditions are recorded in the battery management database unit 24. Here, the collection conditions may be set individually for each battery 40, or settings that are uniformly applied to all batteries 40 may be recorded.

[0070] In the battery capacity authentication process of step S6, after authenticating the authenticated capacity of the battery 40 stored in the battery station 10, the user information change unit 26 acquires the collection conditions from the user management database unit 25 and compares the collection conditions with the authenticated capacity. If the authenticated capacity satisfies the collection conditions, the user information change unit 26 updates the user management database unit 25 by associating the identification information of the battery 40 with the user information of the collector.

[0071] When a collector inputs a collection operation from the operation unit 15 of the battery station 10, the battery management unit 14 accesses the user management database unit 25, acquires all of the identification information associated with the user information of the collector, and unlocks the lock mechanism of the battery 40 that has been selected for collection. This allows the collector to collect batteries 40 that have deteriorated more than a predetermined deterioration rate and perform regeneration or recycling.

[0072] In this modified example, the authentication capacity is also set as the recovery condition, and the battery 40 is recovered based on the authentication capacity, and the association between the user information and the identification information is changed, so that the battery 40 can be used and recovered appropriately depending on the deterioration of the battery 40 and the chargeable capacity. (Modification 3 of the first embodiment)

[0073] In the battery management system and battery management method shown in Figures 1 to 4, the battery 40 to be replaced is presented after the battery 40 used by the user 50 is stored in the battery station 10, but the battery to be replaced may also be presented while the battery 40 is in use.

[0074] In this modified example, the battery connection step S1 is executed after the option presentation step S7 and the selection step S8 shown in Fig. 4. In this modified example, if the battery station 10 does not contain a battery 40 that meets the usage conditions expected by the user 50, the user 50 can continue to use the battery 40 that is currently in use.

[0075] Furthermore, a GPS (Global Positioning System) device may be installed in the user terminal 30 to acquire location information for the user terminal 30, and the user terminal 30 may access the management server 20 and check the certified capacity of batteries 40 stored in nearby battery stations 10 from the battery management database unit 24. This allows the user to remotely determine which battery stations 10 store batteries 40 with certified capacities that meet the expected usage conditions, enabling the user to use the appropriate batteries 40 according to the deterioration of the batteries 40 and the chargeable capacity. (Fourth modification of the first embodiment)

[0076] In this modification, the operator of the battery station 10 owns multiple batteries 40, and the user 50 has entered into a rental contract, lease contract, or subscription-based usage contract with the operator of the battery station 10. In this case, ownership of the battery 40 is not transferred when the battery 40 is used, taken out, collected, or charged. Therefore, the battery management unit 14 can handle each operation simply by changing the association between the identification information of the battery 40 and the user information in the user management database unit 25. (Second embodiment)

[0077] Next, a second embodiment of the present invention will be described with reference to Figs. 5 and 6. Description of content that overlaps with the first embodiment will be omitted. This embodiment can be used when a user 50 owns a battery 40 and transfers ownership of a used battery 40 to a third party. Fig. 5 is a block diagram that schematically shows the configuration of a battery management system 110 according to this embodiment. As shown in Fig. 5, the battery management system 110 includes a battery station 10, a management server 20, a user terminal 30, and a distribution server 60, all of which are connected to each other so that they can communicate information with each other.

[0078] The distribution server 60 is an information processing device that is communicably connected to the management server 20, the plurality of battery stations 10, and the plurality of user terminals 30, and performs distribution management of the batteries 40 according to a predetermined procedure. As shown in FIG. 5 , the distribution server 60 includes an information communication unit 61, a reception unit 62, a presentation unit 63, and a settlement unit 64.

[0079] The information communication unit 61 is a part that communicates information with the outside of the distribution server 60. The configuration of the information communication unit 61 is not limited, and it may be connected by wire or wirelessly, and the communication protocol used is not limited, and any known protocol can be applied. Furthermore, the path through which the information communication unit 61 communicates information can be any known communication path such as an optical fiber network, a satellite communication network, a telephone line network, or a mobile communication network.

[0080] The reception unit 62 is a part that receives instructions from the user 50 who has connected the battery 40 to the battery connection unit 12 or from other users (third parties). The specific configuration of the reception unit 62 is not limited, but for example, it may transmit information on a reception screen to the display unit 16 or the display unit 33 via the information communication unit 61, and receive input from the operation unit 15 or the input / output unit 32 as instructions from the user 50 or other users (third parties).

[0081] The presentation unit 63 is a part that acquires the certified capacity of the battery 40 from the battery management database unit 24 based on instructions received from the user 50 and presents it to other users. In addition to the certified capacity, the content presented to other users by the presentation unit 63 may include the manufacturer, model, user information, usage history, etc. that are recorded in association with the identification information in the battery management database unit 24. The format of the presentation unit 63 is not limited, and may be a price presentation type or an auction type.

[0082] The settlement unit 64 is a part that executes settlement based on instructions from the user 50 and other users. The specific configuration of the settlement unit 64 is not limited, and known technology used in electronic commerce can be used. Furthermore, the settlement unit 64 may be provided within the distribution server 60, or an external settlement server may be used.

[0083] Fig. 6 is a flowchart showing the procedure for battery distribution in the battery management method according to this embodiment. Battery distribution in this embodiment is performed by replacing the option presentation step of step S7 and part of the selection step of step S8 in the battery management method shown in Fig. 1. In this embodiment, in the option presentation step of step S7, not only are batteries 40 to be replaced presented to the user 50, but the option of selling the used battery 40 is also included. When the user 50 selects selling in the selection step of step S8, the procedure shown in Fig. 6 starts.

[0084] Step S11 is a distribution request receiving step in which the receiving unit 62 receives a request to sell the battery 40 from the user 50. The receiving unit 62 acquires the identification information and authenticated capacity of the battery 40 to be sold from the battery management database unit 24. The receiving unit 62 also acquires the conditions of the sale entered from the operation unit 15 or the input / output unit 32 as sales condition information, and proceeds to step S12. Examples of the sales condition information here include the price, sales method, and payment method. The sales method may include information such as selling at the asking price only, an acceptable discount rate, or selling by auction, for example.

[0085] Step S12 is a distribution request presentation step in which information about the battery 40 to be sold and the intention to sell are presented to other users (third parties). The presentation unit 63 presents information about the battery 40 to be sold to other users based on the identification information and sales condition information acquired by the reception unit 62. At this time, the presentation unit 63 presents the certified capacity of the battery 40, allowing other users to understand the actual chargeable capacity of the battery 40 and consider whether or not to purchase it. After the presentation unit 63 presents the information about the battery 40 and the intention to sell, the process proceeds to step S13.

[0086] Step S13 is an acquisition offer acceptance step for accepting from other users the intention to acquire the battery 40. While the presentation unit 63 is presenting information about the battery 40 and the intention to sell it, the acceptance unit 62 is accepting from other users the intention to acquire the battery 40 as acquisition offer information. After the acceptance unit 62 receives the acquisition offer information, the process proceeds to step S14.

[0087] Step S14 is an offer determination step in which it is determined whether the acquisition offer information received by the reception unit 62 is a valid offer to acquire the battery 40 to be sold. The reception unit 62 transmits the acquisition offer information to the user information change unit 26, and the user information change unit 26 determines whether the acquisition offer information is a valid offer to acquire the battery 40 to be sold. If the acquisition offer information is valid, the process proceeds to step S15, and if it is invalid, the process proceeds to step S13. Methods for determining the validity of the acquisition offer information include, for example, whether the user information of a third party is recorded in the user management database unit, whether the payment unit 64 is available, and so on.

[0088] Step S15 is a transaction determination step that determines whether the selling condition information of the battery 40 to be sold matches the acquisition offer information. The user information change unit 26 acquires the selling condition information acquired by the reception unit 62 in the distribution request reception step, and determines whether the acquisition offer information satisfies the selling conditions. If the determination result indicates that the conditions are met, the process proceeds to step S16, and if the conditions are not met, the process proceeds to step S13.

[0089] Step S16 is a settlement process for settling the consideration for selling the battery 40 to the user 50. The settlement unit 64 performs a settlement process for the selling consideration set in the selling condition information to the user 50. After the settlement process is completed, the process proceeds to step S17.

[0090] Step S17 is an association change step for transferring ownership of the sold battery 40. The settlement unit 64 transmits information about the settlement process to the user information change unit 26, and updates the user management database unit 25 by associating the user information about the submitter of the acquisition application information for which settlement has been established with the identification information of the battery 40.

[0091] In this embodiment, the user 50 selects to sell the battery 40 using the distribution server 60, and a third party can confirm the certified capacity of the battery 40 and apply to purchase it. This allows both the seller and the buyer to accurately understand the chargeable capacity of the used battery 40, and then an appropriate price can be set and ownership can be transferred. Therefore, in cases where the battery 40 has deteriorated and is no longer suitable for the usage conditions expected by the user 50 but is suitable for the usage conditions expected by the third party, appropriate ownership transfer and use can be achieved depending on the deterioration and chargeable capacity of the battery 40. (Modification 1 of the second embodiment)

[0092] In the battery management system and battery management method shown in Figures 5 and 6, when user 50 selects to sell battery 40, the process proceeds to the distribution request acceptance process of step S11, but the distribution request acceptance process may also be executed automatically when predetermined conditions are met.

[0093] In this modified example, the user 50 includes a predetermined authentication capacity, that is, a selling threshold, in the user information as a planned selling condition and records this in the user management database unit 25. If the authentication capacity of the battery 40 falls below the selling threshold in the battery capacity authentication process of step S6, the battery management unit 14 omits the option presentation process of step S7 and the selection process of step S8, and proceeds to step S11, where the reception unit 62 receives the planned selling condition as selling condition information.

[0094] In this modification, the user 50 sets the planned selling conditions in advance, and can sell the battery 40 without being aware of the certified capacity, which is the chargeable capacity of the battery 40. (Modification 2 of the second embodiment)

[0095] In the battery management system and battery management method shown in Figures 5 and 6, another user checks the contents of the presentation unit 63 and makes an offer to acquire battery 40 in the acquisition offer acceptance process of step S13, but the offer to acquire may also be made automatically if predetermined conditions are met.

[0096] In this modified example, other users include a purchase threshold, which is a predetermined authentication capacity, in their user information as a planned purchase condition and record it in the user management database unit 25. In the acquisition offer acceptance process of step S13, the acceptance unit 62 acquires the planned purchase conditions from the user management database unit 25, accepts them as acquisition offer information, and proceeds to the subsequent procedure. In step S15, the user information change unit 26 determines whether the selling condition information satisfies the planned purchase conditions, which are the acquisition offer information. If the result of the judgment is that the conditions are satisfied, the process proceeds to step S16, and if the conditions are not satisfied, the process proceeds to step S13.

[0097] In this modification, other users can automatically purchase batteries 40 with an authenticated capacity that meets the purchase conditions that the other users have set in advance. This allows a collection company to purchase batteries 40 with an authenticated capacity that have a degradation rate of less than 50%, for example, in bulk, and perform regeneration or recycling. (Modification 3 of the second embodiment)

[0098] In variant example 1 of this embodiment, the case where the user 50 owns the battery 40 is shown, but it can also be used in a case where the operator of the battery station 10 owns the battery 40 and has entered into a rental contract, lease contract, or subscription-based usage contract for the battery 40 with the user 50.

[0099] In this modification, the operator of the battery station 10 includes a sales threshold, which is a predetermined authentication capacity, in the user information as a planned sale condition and records this in the user management database unit 25. The other configurations are the same as in modification 1. The operator of the battery station 10 can also change the planned sale conditions as appropriate.

[0100] As a result, deteriorated batteries 40 that meet the sales conditions set by the operator of the battery station 10 are automatically sold to a recycler or disassembler via the distribution server 60, and a request can be made to collect the batteries and reuse the resources. This makes it possible to check the degree of deterioration of a huge number of batteries 40 and to recycle them efficiently. Furthermore, by setting the sales conditions (threshold value for the degree of deterioration), the operator of the battery station 10 can flexibly respond to situations such as technological innovations that extend the lifespan of batteries 40, or shortages of battery raw materials in the global market, by controlling the timing of collection of batteries 40 for reuse and recycling, and adjusting the distribution volume. (Fourth modification of the second embodiment)

[0101] In this modification, a user 50 who purchases an electric vehicle or electric motorcycle owns the battery 40 that is an accessory, and transfers the battery 40 to the operator of the battery station 10 when using the battery station 10. The user 50 may receive money as consideration for transferring the ownership of the battery 40, or may enter into a subscription-based usage contract for the battery station 10.

[0102] In this case, the user 50 brings his / her own battery 40 to the battery station 10 and connects the battery 40 to the battery connection unit 12. At the battery station 10, the battery management unit 14 displays the contents of the transfer contract on the display unit 16, and the user 50 concludes the transfer contract by operating the operation unit 15. Thereafter, the battery 40 is used and managed in the same manner as in the second embodiment and modifications 1 to 3.

[0103] Furthermore, in the battery management unit 14, the battery status acquisition unit 22 acquires secondary battery information from the battery 40 connected to the battery connection unit 12 when a contract is made with the user 50. The battery capacity authentication unit 23 calculates the chargeable capacity of the battery based on the electrical characteristic information included in the secondary battery information acquired by the battery status acquisition unit 22, and authenticates this as the authenticated capacity. Based on the authenticated capacity authenticated by the battery capacity authentication unit 23, the battery management unit 14 may request payment of consideration from the user 50 or a deposit of the difference required for the usage contract.

[0104] In this modification, the user 50 initially owns the battery 40 and can use the battery 40 under his / her own management until the battery 40 deteriorates. Furthermore, by providing the deteriorated battery 40, the user can use the many good batteries 40 managed at the battery station 10, which can promote the transfer of ownership to the deteriorated battery 40. This prevents individuals from storing the battery 40 in a deteriorated state, and allows the battery 40 to be collected for recycling and other resource recovery cycles. (Third embodiment)

[0105] Next, a third embodiment of the present invention will be described with reference to FIG. 7. Descriptions of content that overlap with the first embodiment will be omitted. In this embodiment, a battery station 10 is used as an autonomous power generation station. As shown in FIG. 7, a plurality of road surface power generation panels 70 are installed around the battery station 10 of this embodiment.

[0106] The road surface power generation panels 70 are solar panels placed on the road surface, and are components that generate electricity from incident light and supply it to the battery station 10. Multiple road surface power generation panels 70 are electrically connected to each other in series or parallel. There are no restrictions on the specific configuration of the road surface power generation panels 70, but examples include those that have an amorphous silicon solar panel, an impact buffer material such as light-transmitting polycarbonate, and an anti-slip layer made of aggregate made of ceramic particles dispersed in a transparent resin.

[0107] The electricity generated by the road surface power generation panel 70 is supplied to the battery station 10 and used to charge the battery 40 connected to the battery connection part 12. It is also preferable to provide a storage battery (not shown) for temporarily storing the electricity generated by the road surface power generation panel 70, separate from the battery 40 used by the user 50 and stored in the storage part. The storage battery may be stored inside the battery station 10, or may be buried underground below the road surface power generation panel 70. If the battery station 10 is equipped with a storage battery, the electricity generated by the road surface power generation panel 70 is stored in the storage battery, and the electricity is supplied from the storage battery to charge the battery 40 connected to the battery connection part 12.

[0108] In the battery station 10 of this embodiment, the battery 40 is charged with power generated by the road-surface power generation panel 70, so the battery 40 can be charged and managed autonomously even when there is no external power supply. Therefore, the battery 40 can be continuously used and managed even in areas where it is difficult to supply power from outside, such as mountainous areas or island areas.

[0109] Also, a power output unit may be provided in the battery station 10, and power stored in the battery 40 or a storage battery connected to the battery connection unit 12 may be supplied from the output unit. This allows the battery 40 to be used and managed under normal circumstances, and in an emergency, the power stored in the entire battery station 10 can be used as an emergency power source. (Fourth embodiment)

[0110] Next, a fourth embodiment of the present invention will be described with reference to FIG. 8. Description of content that overlaps with the first embodiment will be omitted. FIG. 8 is a schematic diagram showing an overview of a battery exchange area 1000 according to this embodiment. As shown in FIG. 8, the battery exchange area 1000 includes a power storage unit 1010, road surface power generation panels 1110, street light power generation panels 1120, rooftop power generation panels 1130, a battery station 1210, a mobile power supply device 1220, and an electric vehicle 1230.

[0111] The road surface power generation panel 1110 is a solar power generation panel placed on the road surface, which generates electricity from incident light and supplies it to the battery station 1210. The street light power generation panel 1120 is a solar power generation panel placed on a street light, which generates electricity from incident light and supplies it to the battery station 1210. The rooftop power generation panel 1130 is a solar power generation panel placed on a roof, which generates electricity from incident light and supplies it to the battery station 1210.

[0112] The power storage unit 1110 is buried underground in the battery exchange area 1000, and has multiple secondary batteries connected in series and parallel. The power storage unit 1110 is connected to the road surface power generation panels 1110, the street light power generation panels 1120, and the rooftop power generation panels 1130, and stores the power generated by these power generation panels and supplies the power to the battery station 1210. The power storage unit 1110 is in the form of a replaceable unit, and it is preferable to use batteries 1020 that have been reused and recycled after they have deteriorated. The power storage unit 1110 may also be connected to a commercial power grid, and charge and discharge operations may be performed by buying and selling electricity.

[0113] The battery station 1210 is supplied with power from the road surface power generation panels 1110, the street light power generation panels 1120, and the rooftop power generation panels 1130, and is a device that is connected to the battery 1020 to charge and discharge the battery and grant permission for use to users. The mobile power supply device 1220 is a power supply device that houses the battery 1020 and performs charging and discharging operations. The electric vehicle 1230 is a vehicle that moves using the power stored in the battery 1020 as a power source, such as an electric car or an electric motorcycle.

[0114] A user 50 drives an electric vehicle 1230 to visit a battery exchange area 1000, removes the battery 1020 mounted on the electric vehicle 1230, and connects it to a battery station 1210. The user 50 also brings a mobile power supply device 1220 to the battery exchange area 1000, removes the mounted battery 1020, and connects it to the battery station 1210. The battery station 1210 manages the charging / discharging, exchange, sale, etc. of the battery 1020 using the methods shown in the first to third embodiments.

[0115] In this embodiment, power generated by sunlight is stored in a power storage unit 1010, and a wide variety of batteries 1020 used in an electric vehicle 1230 or a mobile power supply device 1220 are managed. This improves the efficiency of battery 1020 management and recycling, and reduces the environmental burden by utilizing natural energy.

[0116] The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the claims. Embodiments obtained by appropriately combining the technical means disclosed in different embodiments are also included in the technical scope of the present invention. [Explanation of symbols]

[0117] 100,110...Battery management system 1000…Battery replacement area 10,1210…Battery Station 11. Ministry of Information and Communications 12...Battery connection 13…Charging / discharging section 14...Battery management section 15...Operation unit 16…Display section 20...Administration server 21...Ministry of Information and Communications 22...Battery status acquisition unit 23...Battery capacity authentication unit 24...Battery Management Database Section 25...User management database section 26...User information change section 30...User terminal 31...Ministry of Information and Communications 32…Input / output section 33...Display section 34...Storage section 40,1020…Battery 41...Secondary battery cell 42...BMS 43...Station connection 44...Storage section 45…Ministry of Information and Communications 50…User 60...Distribution server 61...Ministry of Information and Communications 62…Reception 63…Presentation part 64...Payment Department 70,1110...Road surface power generation panels 1010...Power storage unit 1120...Street light power generation panel 11:30...Rooftop power generation panels 1220…Mobile power supply equipment 1230…Electric mobile object

Claims

1. A battery management system that charges and discharges a secondary battery connected to a battery station and manages the secondary battery using a management server that is communicably connected to the battery station, a battery status acquisition unit that acquires, as secondary battery information, identification information that specifies and identifies the secondary battery and electrical characteristic information that indicates electrical characteristics of the secondary battery when connected, charged, or discharged; a battery capacity authentication unit that calculates a chargeable capacity of the secondary battery based on the electrical characteristic information and authenticates the calculated capacity as an authenticated capacity; a battery management database unit provided in the management server, which records the identification information and the certified capacity in association with each other; a user management database that records user information related to a user of the secondary battery and the identification information in association with each other; a user information change unit that changes the association between the user information and the identification information based on the authentication capacity; the user information includes usage condition information that is a condition for selecting the secondary battery, A battery management system characterized in that the user information change unit selects the secondary battery that matches the usage conditions information from the battery management database, and updates the user management database by associating the identification information of the selected secondary battery with the user information.

2. A battery management system that charges and discharges a secondary battery connected to a battery station and manages the secondary battery using a management server that is communicably connected to the battery station, a battery status acquisition unit that acquires, as secondary battery information, identification information that specifies and identifies the secondary battery and electrical characteristic information that indicates electrical characteristics of the secondary battery when connected, charged, or discharged; a battery capacity authentication unit that calculates a chargeable capacity of the secondary battery based on the electrical characteristic information and authenticates the calculated capacity as an authenticated capacity; a battery management database unit provided in the management server, which records the identification information and the certified capacity in association with each other; a user management database that records user information related to a user of the secondary battery and the identification information in association with each other; a user information change unit that changes the association between the user information and the identification information based on the authentication capacity; a distribution server communicably connected to the management server, The user information includes a selling threshold; the distribution server includes a presenting unit that presents the authenticated capacity of the secondary battery identified by the identification information to other users when the authenticated capacity falls below the selling threshold, and a receiving unit that receives acquisition request information from the other users; The battery management system is characterized in that the user information change unit changes the association between the user information and the identification information based on the acquisition request information.

3. A battery management system that charges and discharges a secondary battery connected to a battery station and manages the secondary battery using a management server that is communicably connected to the battery station, a battery status acquisition unit that acquires, as secondary battery information, identification information that specifies and identifies the secondary battery and electrical characteristic information that indicates electrical characteristics of the secondary battery when connected, charged, or discharged; a battery capacity authentication unit that calculates a chargeable capacity of the secondary battery based on the electrical characteristic information and authenticates the calculated capacity as an authenticated capacity; a battery management database unit provided in the management server, which records the identification information and the certified capacity in association with each other; a user management database that records user information related to a user of the secondary battery and the identification information in association with each other; a user information change unit that changes the association between the user information and the identification information based on the authentication capacity; a distribution server communicably connected to the management server, The user information includes a purchase threshold; A battery management system characterized in that the distribution server changes the association between the user information and the identification information when the authenticated capacity of the secondary battery identified by the identification information falls below the purchase threshold.

4. 4. The battery management system according to claim 1, The electrical characteristic information includes any one of a full charge voltage, a full discharge voltage, an open circuit voltage, a closed circuit voltage, a charge characteristic, a discharge characteristic, an internal resistance, a temperature characteristic, a load characteristic, cycle usage history information, or an impedance.

5. 5. The battery management system according to claim 1, the battery management database records a plurality of pieces of the electrical characteristic information and the identification information in association with each other; The battery management system is characterized in that the battery capacity authentication unit authenticates the authenticated capacity based on a change over time in the electrical characteristic information.

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