US 12,434,589 B2
Diagnostic system for battery module and vehicle
Yuko Maruyama, Toyota (JP); and Shohei Matsuoka, Toyota (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed on Nov. 21, 2022, as Appl. No. 18/057,297.
Claims priority of application No. 2022-016410 (JP), filed on Feb. 4, 2022.
Prior Publication US 2023/0249572 A1, Aug. 10, 2023
Int. Cl. B60L 53/65 (2019.01); B60L 50/64 (2019.01); G07C 5/08 (2006.01); H01M 10/42 (2006.01); H01M 10/44 (2006.01); H01M 10/48 (2006.01)
CPC B60L 53/65 (2019.02) [B60L 50/64 (2019.02); G07C 5/0808 (2013.01); G07C 5/0816 (2013.01); H01M 10/4257 (2013.01); H01M 10/441 (2013.01); H01M 10/482 (2013.01); H01M 2220/20 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A vehicle comprising:
a battery module including a plurality of electric cells, the battery module being configured to be recharged by electric power supplied from an external power supply; and
a diagnostic system for the battery module, wherein the diagnostic system comprises
a displacement meter configured to detect a displacement of at least one of the electric cells during the recharging, and
a processor configured to
acquire the displacement detected by the displacement meter,
calculate a displacement amount of the at least one of the electric cells during the recharging and a slope of the displacement amount with respect to a charging electric energy, based on the acquired displacement, and
determine whether a first displacement amount is calculated, the first displacement amount being the displacement amount from a first predetermined state of charge to a second predetermined state of charge, wherein the processor determines that the battery module is a genuine product when the first displacement amount falls within a first range,
the processor is further configured to determine, when the first displacement amount is not calculated, whether a first slope of the displacement amount is calculated, the first slope being the slope of the displacement amount with respect to the charging electric energy from a third predetermined state of charge to a fourth predetermined state of charge, wherein the processor determines that the battery module is a genuine product when the first slope falls within a second range.