US 11,789,085 B2
Battery diagnosis device, battery diagnosis method, non-transitory storage medium, and vehicle
Kohei Takahashi, Toyota (JP); Takayuki Akaishi, Toyota (JP); Sunao Horitake, Toyota (JP); and Yuhki Shiozumi, Kobe (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP); and DENSO TEN Limited, Kobe (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP); and DENSO TEN Limited, Kobe (JP)
Filed on Mar. 30, 2021, as Appl. No. 17/217,443.
Claims priority of application No. 2020-069196 (JP), filed on Apr. 7, 2020.
Prior Publication US 2021/0311124 A1, Oct. 7, 2021
Int. Cl. G01R 31/382 (2019.01); H01M 10/42 (2006.01); G01R 31/396 (2019.01); G01R 31/367 (2019.01); H01M 10/48 (2006.01)
CPC G01R 31/382 (2019.01) [G01R 31/367 (2019.01); G01R 31/396 (2019.01); H01M 10/4285 (2013.01); H01M 10/48 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A system comprising:
a battery mounted on a vehicle, the battery being configured to store electric power;
at least one of a voltage sensor, a current sensor, and a temperature sensor configured to detect a corresponding at least one of a voltage, a current, and a temperature; and
a battery diagnosis device configured to diagnose a state of the battery, the battery diagnosis device comprising a processor configured to:
transition the battery diagnosis device to a wake-up mode in which a plurality of functions of the battery diagnosis device operate using the electric power of the battery;
acquire information about the battery that includes the at least one of the voltage, the current, and the temperature; and
execute diagnosis of the battery based on the acquired information about the battery, wherein
in the diagnosis of the battery, the processor is configured to:
i) determine, as a first determination, whether there is abnormality about a first item corresponding to a first state, based on a result of a determination of whether the state of the battery matches the first state, at a time point when a first time elapses from start of the diagnosis of the battery, when the vehicle is at a standstill, the determination of whether the state of the battery matches the first state being based on the information about the battery,
ii) end the diagnosis of the battery and transition the battery diagnosis device from the wake-up mode to a sleep mode in which some functions of the plurality of functions stop and consumption of the electric power of the battery by the battery diagnosis device is reduced as compared to the wake-up mode, when the processor determines in the first determination that there is no abnormality about the first item, and
iii) continue the diagnosis of the battery and determine, as a second determination, whether there is abnormality about the first item, after the time point when the first time elapses from the start of the diagnosis of the battery, when the processor determines in the first determination that there is abnormality about the first item.