State of charge determination method and apparatus for battery system
US12332316B2 · kind B2 · utility
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15Claims
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Key dates
| Filing date | Nov 8, 2022 |
| Grant date | Jun 17, 2025 |
| Priority date | — |
| Expiry date | Dec 2, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/3835
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A state of charge (SOC) determination method and apparatus for a battery system are disclosed. Based on a correspondence between impedance and SOC, a correspondence between OCV and SOC, and an operating current at a previous data collection moment, a correction coefficient at a current data collection moment can be determined. After the SOC estimated at the current data collection moment is corrected based on the correction coefficient, the accumulation of errors in the SOC can be eliminated, and the accuracy of the determined SOC is thereby improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.