US 12,066,496 B2
Secondary battery diagnosing apparatus and method
Soon-Ju Choi, Daejeon (KR); Dae-Soo Kim, Daejeon (KR); Young-Deok Kim, Daejeon (KR); Su-Won Jee, Daejeon (KR); and Hyun-Jun Choi, Daejeon (KR)
Assigned to LG Energy Solution, Ltd., Seoul (KR)
Appl. No. 17/918,730
Filed by LG Energy Solution, Ltd., Seoul (KR)
PCT Filed Dec. 3, 2021, PCT No. PCT/KR2021/018292
§ 371(c)(1), (2) Date Oct. 13, 2022,
PCT Pub. No. WO2022/145776, PCT Pub. Date Jul. 7, 2022.
Claims priority of application No. 10-2020-0184944 (KR), filed on Dec. 28, 2020.
Prior Publication US 2023/0236262 A1, Jul. 27, 2023
Int. Cl. G01R 31/396 (2019.01); G01R 31/367 (2019.01); H01M 10/44 (2006.01)
CPC G01R 31/396 (2019.01) [G01R 31/367 (2019.01); H01M 10/44 (2013.01); H01M 2220/20 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A secondary battery diagnosing apparatus, comprising:
memory configured to store a positive electrode reference profile and a negative electrode reference profile for charge or discharge of a reference battery;
a voltage sensor configured to measure a voltage of a target battery during a charge or discharge process; and
a processor configured to:
generate a charge and discharge measurement profile based on the measured voltage;
compare a simulation profile obtained from the positive electrode reference profile and the negative electrode reference profile with the generated charge and discharge measurement profile;
determine a positive electrode adjustment profile and a negative electrode adjustment profile by adjusting an error between the simulation profile and the charge and discharge measurement profile to within a predetermined level; and
diagnose the target battery for defect based on the determined positive electrode adjustment profile and the determined negative electrode adjustment profile.