Apparatus and method for controlling step charging of secondary battery
US11876397B2 · kind B2 · utility
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15Claims
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Key dates
| Filing date | Oct 30, 2019 |
| Grant date | Jan 16, 2024 |
| Priority date | — |
| Expiry date | Feb 8, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed is an apparatus and method for controlling step charging of a secondary battery. A charging control unit determines a SOC, an OCV and a polarization voltage of the secondary battery, determines an OCV deviation corresponding to a difference between the OCV and a predefined minimum OCV value, determines a correction factor corresponding to the polarization voltage and the OCV deviation, determines a look-up SOC by correcting the SOC according to the correction factor, determines the magnitude of a charging current corresponding to the look-up SOC, and provides the determined charging current to a charging device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.