US 12,466,290 B2
Method and device for controlling a battery used in electric vehicle
Young Deok Kim, Seoul (KR); and Soo Kyung Jung, Seoul (KR)
Assigned to Hyundai Mobis Co., Ltd., Seoul (KR)
Filed by HYUNDAI MOBIS Co., Ltd., Seoul (KR)
Filed on Jun. 19, 2023, as Appl. No. 18/337,185.
Claims priority of application No. 10-2022-0074600 (KR), filed on Jun. 20, 2022.
Prior Publication US 2023/0406154 A1, Dec. 21, 2023
Int. Cl. B60L 58/16 (2019.01); G01R 31/36 (2020.01); G01R 31/392 (2019.01); H01M 10/42 (2006.01)
CPC B60L 58/16 (2019.02) [G01R 31/3648 (2013.01); G01R 31/392 (2019.01); H01M 10/425 (2013.01); H01M 2010/4271 (2013.01); H01M 2220/20 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A processor-implemented method for determining a condition of a battery of an electric vehicle (EV), the method comprising:
collecting, by a battery management system (BMS), a usage history related to charging and discharging of the battery;
determining a level of the battery based on the usage history corresponding to a number of charging/discharging cycles of the battery, the level being determined to be level 1 if the number of charging/discharging cycles is below a predetermined number or level 2 if the number of charging/discharging cycles is above the predetermined number;
storing a grade of the battery as a reuse grade in a memory, in response to the level being determined to be level 1; and
changing the reuse grade stored in the memory to a recycle grade, in response to the level being determined to be level 2,
wherein the usage history related to the charging and the discharging of the battery comprises information on the total number of times of charging of the battery and information on an average discharged state at the times of the charging, and
wherein the storing of the grade of the battery in the memory comprises storing the grade of the battery as the reuse grade, in response to the information on the total number of times of charging corresponding to a maximum value when the information on the average discharged state at the charging times corresponds to a fully discharged state.