US 12,455,319 B2
Apparatus and method for diagnosing battery
Yoon-Jung Bae, Daejeon (KR); Kyung-Hwa Woo, Daejeon (KR); and Hee-Seok Jeong, Daejeon (KR)
Assigned to LG Energy Solution, Ltd., Seoul (KR)
Appl. No. 18/881,368
Filed by LG Energy Solution, Ltd., Seoul (KR)
PCT Filed Nov. 1, 2023, PCT No. PCT/KR2023/017290
§ 371(c)(1), (2) Date Jan. 6, 2025,
PCT Pub. No. WO2024/096585, PCT Pub. Date May 10, 2024.
Claims priority of application No. 10-2022-0144059 (KR), filed on Nov. 1, 2022.
Prior Publication US 2025/0172617 A1, May 29, 2025
Int. Cl. G01R 31/367 (2019.01); G01R 31/3842 (2019.01); G01R 31/392 (2019.01); G01R 31/396 (2019.01)
CPC G01R 31/367 (2019.01) [G01R 31/3842 (2019.01); G01R 31/392 (2019.01); G01R 31/396 (2019.01)] 10 Claims
OG exemplary drawing
 
1. An apparatus for diagnosing a battery, comprising:
a control unit configured to:
determine a charging total capacity,
obtain each of a constant current charging capacity and a constant voltage charging capacity from the charging total capacity,
calculate a constant current charging capacity ratio and a constant voltage charging capacity ratio based on battery information including voltage and current of a battery during a charging cycle of the battery, wherein the constant current charging capacity ratio and the constant voltage charging capacity ratio are based on the charging total capacity, the constant current charging capacity and the constant voltage charging capacity, and
diagnose a state of the battery based on the constant current charging capacity ratio and the constant voltage charging capacity ratio.