US 12,328,022 B2
Battery management system
Nobuyasu Haga, Seto (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed on Jun. 29, 2023, as Appl. No. 18/216,243.
Claims priority of application No. 2022-145153 (JP), filed on Sep. 13, 2022.
Prior Publication US 2024/0088687 A1, Mar. 14, 2024
Int. Cl. H02J 7/00 (2006.01); G07C 5/00 (2006.01); G07C 5/02 (2006.01)
CPC H02J 7/0049 (2020.01) [G07C 5/008 (2013.01); G07C 5/02 (2013.01); H02J 7/0068 (2013.01); Y02T 10/70 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A battery management system comprising:
a vehicle; and
a center, wherein:
the vehicle includes an acquisition unit configured to acquire vehicle data including information on traveling and information on a voltage and a charge and discharge amount of a battery to be mounted;
the vehicle includes a transmission unit configured to transmit the vehicle data to the center;
the center includes a reception unit configured to receive the vehicle data from the vehicle;
the center includes a determination unit configured to determine a state of the battery based on the vehicle data;
when the vehicle is not parked, the determination unit is configured to integrate the charge and discharge amount of the battery every time the vehicle data is received, and reset an integrated value when a full charge state of the battery is detected; and
when the vehicle is not parked, the determination unit determines that the battery is in a temporary overdischarge state, when the voltage of the battery when the vehicle is started is less than a first voltage and the integrated value of the charge and discharge amount of the battery is in a first state in which the integrated value of the charge and discharge amount of the battery is less than a first charge and discharge amount.