US 11,808,818 B2
Degradation determination device for secondary battery
Yoshiya Yamashita, Toyota (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed on Oct. 6, 2021, as Appl. No. 17/495,177.
Claims priority of application No. 2020-171764 (JP), filed on Oct. 12, 2020.
Prior Publication US 2022/0113355 A1, Apr. 14, 2022
Int. Cl. G01R 31/392 (2019.01); H01M 10/625 (2014.01); G01R 31/396 (2019.01); G01R 31/367 (2019.01); H01M 10/48 (2006.01)
CPC G01R 31/392 (2019.01) [G01R 31/367 (2019.01); G01R 31/396 (2019.01); H01M 10/48 (2013.01); H01M 10/625 (2015.04)] 5 Claims
OG exemplary drawing
 
1. A degradation determination device for a secondary battery, the degradation determination device being used for a hybrid vehicle and configured to determine degradation of the secondary battery, the hybrid vehicle including: an engine configured to output power for travel; a motor configured to output power for travel; the secondary battery that is configured to supply electric power to the motor; and a control device configured to execute travel control in which the engine and the motor are controlled such that the hybrid vehicle travels while adjusting a fuel injection amount of the engine based on an accelerator operation amount,
the degradation determination device comprising:
a controller configured to determine degradation of the secondary battery based on data of a third parameter in a predetermined period, the third parameter being a difference between:
a first parameter reflecting required power which is based on the accelerator operation amount; and
a second parameter reflecting power output from the engine which is based on the fuel injection amount.