US 12,216,168 B2
Device and method for diagnosing battery
Bo Mi Lim, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Appl. No. 18/011,396
Filed by LG ENERGY SOLUTION, LTD., Seoul (KR)
PCT Filed Jul. 23, 2021, PCT No. PCT/KR2021/009543
§ 371(c)(1), (2) Date Dec. 19, 2022,
PCT Pub. No. WO2022/025533, PCT Pub. Date Feb. 3, 2022.
Claims priority of application No. 10-2020-0096308 (KR), filed on Jul. 31, 2020.
Prior Publication US 2023/0266393 A1, Aug. 24, 2023
Int. Cl. G01R 31/367 (2019.01); G01R 31/3835 (2019.01); G01R 31/392 (2019.01)
CPC G01R 31/367 (2019.01) [G01R 31/3835 (2019.01); G01R 31/392 (2019.01)] 18 Claims
OG exemplary drawing
 
1. A battery diagnosis device comprising:
a voltage measurement unit configured to measure a voltage of a battery cell;
a fitting value calculation unit configured to calculate a fitting voltage of the battery cell in a rest section after charging and discharging of the battery cell; and
a diagnosis unit configured to diagnose an abnormality of the battery cell by comparing the measured voltage and the fitting voltage with respect to the rest section of the battery cell,
wherein the diagnosis unit is configured to output a result including whether the abnormality of the battery cell has been diagnosed, and
wherein the battery cell is managed based on the result output by the diagnosis unit.