Abstract: In a battery system including a battery, a storage unit, and a control unit, the storage unit stores a first battery identifier associated with personal information in another system and a second battery identifier not associated with personal information in the other system, and the control unit selectively transmits either the first battery identifier or the second battery identifier to a predetermined information processing device together with battery information related to a status of the battery.

Abstract: An information processing device acquires first data relating to a status of a first vehicle having a driving battery, acquires second data relating to a status of the driving battery, and calculates an evaluation value relating to the first vehicle based on the first data and the second data.

Abstract: The mobile body includes a power storage device and a control device. The control device stores identification information of a first power storage device when the first power storage device is installed in the mobile body as the power storage device. When the first power storage device is replaced with the second power storage device and the identification information of the first power storage device stored in the control device is rewritten to the identification information of the second power storage device, the control device transmits a first signal indicating that the power storage device is replaced to the outside of the mobile body.

Abstract: An information management system includes a data management device and a server. The data management device records the management information including the identification information of the power storage device, the identification information of the user using the power storage device, and the hash value of the use history information of the power storage device in the distributed ledger. The server is configured to be able to read management information. The server is configured to be able to acquire the use history information from the data management device. The server is configured to transmit the provision information based on the use history information in response to the transmission request. The provision information based on the use history information is information including at least one of use history information and information generated based on the use history information.

Abstract: A vehicle management method includes: obtaining first SOH information that indicates a degree of deterioration of a power storage device of a vehicle based on charge data on the power storage device measured while the vehicle is executing external charge of the power storage device using power supplied externally; obtaining second SOH information that indicates the degree of deterioration of the power storage device based on history data about deterioration of the power storage device recorded in the vehicle when the vehicle is not executing external charge of the power storage device; and determining whether the history data have been tampered with by comparing the first SOH information and the second SOH information.

Abstract: A vehicle management method includes: determining whether a power storage device provided in a vehicle has been replaced; and determining whether replacement of the power storage device has been performed in an unauthorized manner when a determination that the power storage device has been replaced is made, wherein the determining as to whether the replacement has been performed in an unauthorized manner includes determining whether the replacement has been performed at an authorized site.

Abstract: A server includes: a communication unit (acquisition unit) that acquires information about a degree of degradation of a battery (secondary battery); and a processor (control unit) that calculates a lease fee of the battery using the information about the degree of degradation of the battery. The processor performs suppression processing for suppressing an increase of the lease fee, the increase of the lease fee being based on deterioration of a degree of discharging-caused degradation caused by discharging in response to a request for adjusting a power demand/supply state in a power system (PG).

Abstract: A server includes: a communication unit that communicates with a mobile terminal (terminal) of a user; and a processor (control unit) that controls the communication unit. When the communication unit has not received deterioration information (battery information) on a battery from the mobile terminal for greater than or equal to a cycle (predetermined period), the processor performs control for obtaining the deterioration information through the mobile terminal.

Abstract: A server includes: a communication unit (acquisition unit) that acquires information of a capacity retention (degree of degradation) of a battery (secondary battery); and a processor (control unit) that calculates a lease fee of the battery using the information of the capacity retention. The processor performs suppression processing for suppressing an increase of the lease fee, the increase of the lease fee being based on deterioration (decrease) of the capacity retention due to an environment in which the electrically powered vehicle is used.

Abstract: A leasing method includes obtaining first data representing a history of a current that flows in a power storage mounted on a vehicle, obtaining second data representing a history of an amount of accelerator operation in the vehicle, obtaining third data representing a travel distance or a time period of travel of the vehicle, obtaining an accident risk of the vehicle based on the first data, the second data, and the third data, and obtaining a degree of exhaustion of a consumable including the power storage based on the first data, the second data, and the third data, the consumable being provided to the vehicle by lease.

Abstract: A management method for a power storage device includes: when energy management by charging or discharging of a power storage device is requested from an aggregator, determining whether or not requested power for charging or discharging exceeds a predetermined value; when the requested power exceeds the predetermined value, if the aggregator having requested is a registered aggregator, performing charging or discharging of the power storage device in accordance with the request; and when the requested power exceeds the predetermined value, if the aggregator having requested is not the registered aggregator, not performing charging or discharging of the power storage device in accordance with the request.

Abstract: A management method for managing a power storage device includes: when information indicating that an accident has occurred with regard to a target vehicle including a power storage device, obtaining first owner information indicating an owner of the power storage device from a data management device that manages information about a plurality of vehicles including the target vehicle; specifying the owner of the power storage device using the obtained first owner information; and providing, to a terminal of the specified owner of the power storage device, a notification that informs the occurrence of the accident of the target vehicle.