Patent ID: 11874330
Assignee: LG ENERGY SOLUTION, LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G  H  Y | IPC G  H

Claim 14:
15. A battery management method, comprising:
a voltage and current of a battery cell while the battery cell is being charged or discharged, for a plurality of charging and discharging cycles of the battery cell;
estimating, for each charging and discharging cycle, a capacity of the battery cell based on the measured current of the battery cell during the charging and discharging cycle;
generating a subset of the plurality of charging and discharging cycles having a common charging and discharging C-rate; and
diagnosing a state of the battery cell based on a comparison of capacity-voltage differential profiles of the subset of charging and discharging cycles with each other.