US 12,332,320 B2
Battery management apparatus and method
Bo Mi Lim, Daejeon (KR); Yo Hwan Choi, Daejeon (KR); Won Tae Joe, Daejeon (KR); and Bom Jin Lee, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Appl. No. 18/265,208
Filed by LG ENERGY SOLUTION, LTD., Seoul (KR)
PCT Filed Jan. 4, 2022, PCT No. PCT/KR2022/000067
§ 371(c)(1), (2) Date Jun. 2, 2023,
PCT Pub. No. WO2022/149824, PCT Pub. Date Jul. 14, 2022.
Claims priority of application No. 10-2021-0002907 (KR), filed on Jan. 8, 2021.
Prior Publication US 2024/0027537 A1, Jan. 25, 2024
Int. Cl. G01R 31/392 (2019.01); G01R 31/367 (2019.01); G01R 31/3842 (2019.01); G01R 31/396 (2019.01); H02J 7/00 (2006.01)
CPC G01R 31/392 (2019.01) [G01R 31/367 (2019.01); G01R 31/3842 (2019.01); G01R 31/396 (2019.01); H02J 7/0013 (2013.01); H02J 7/005 (2020.01)] 20 Claims
OG exemplary drawing
 
1. A battery management apparatus comprising:
a measuring unit configured to measure a current and a voltage of battery cells;
an analyzing unit configured to classify the battery cells into a plurality of classes based on a feature obtained from the current and the voltage of the battery cells and a degradation behavior of each of the battery cells; and
a determining unit configured to determine a lifespan of the battery cells in a preset manner for each of the plurality of classes,
wherein the analyzing unit is further configured to classify as a first class, a first battery cell among the battery cells for which the lifespan of the first battery cell is determined to be normal based on a feature of the first battery cell in a state where charging and discharging are performed on the first battery cell up to a first cycle, and classify as a second class, a second battery cell among the battery cells not belonging to the first class in which lifespan determination is possible in a state where charging and discharging are performed on the second battery cell up to a second cycle, and
wherein the second cycle has a value greater than the first cycle.