US 12,467,980 B2
Apparatus and method for diagnosing battery
Yoon-Jung Bae, Daejeon (KR); Kyung-Hwa Woo, Daejeon (KR); Hee-Seok Jeong, Daejeon (KR); and A-Ming Cha, Daejeon (KR)
Assigned to LG Energy Solution, Ltd., Seoul (KR)
Appl. No. 18/874,390
Filed by LG Energy Solution, Ltd., Seoul (KR)
PCT Filed Nov. 1, 2023, PCT No. PCT/KR2023/017289
§ 371(c)(1), (2) Date Dec. 12, 2024,
PCT Pub. No. WO2024/096584, PCT Pub. Date May 10, 2024.
Claims priority of application No. 10-2022-0143796 (KR), filed on Nov. 1, 2022.
Prior Publication US 2025/0164571 A1, May 22, 2025
Int. Cl. G01R 31/392 (2019.01); G01R 31/3842 (2019.01)
CPC G01R 31/392 (2019.01) [G01R 31/3842 (2019.01)] 12 Claims
OG exemplary drawing
 
1. An apparatus for diagnosing a battery, comprising:
a control unit configured to:
obtain each of a constant current charging capacity and a constant voltage charging capacity from a charging total capacity,
calculate a constant current charging capacity ratio and a constant voltage charging capacity ratio during a charging cycle of the battery based on the charging total capacity, the constant current charging capacity and the constant voltage charging capacity, and
determine a deterioration type of the battery based on the constant current charging capacity ratio and the constant voltage charging capacity ratio.