Patent ID: 11876397
Assignee: LG ENERGY SOLUTION, LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G  Y | IPC G  H

Claim 13:
14. The method for controlling step charging of the secondary battery according to claim 9,
wherein in the (f) step, the look-up SOC is determined according to an equation below:

SOClookup[k]=SOCestimated[k]−dSOC(dVOCV[k],dVpol[k])

where k is a time index, SOClookup[k] is a look-up SOC, SOCestimate[k] is an estimated SOC, dVocv[k] is an OCV deviation, dVpol[k] is a polarization voltage, and dSOC is a look-up table defining a correlation between the OCV deviation and the correction factor and between the polarization voltage and the correction factor.