Learning method, state estimation method, and state estimation device for state estimation model of secondary battery
US12019122B2 · kind B2 · utility
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Key dates
| Filing date | Feb 15, 2022 |
| Grant date | Jun 25, 2024 |
| Priority date | — |
| Expiry date | Jun 20, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A learning method of a state estimation model of a secondary battery includes training the state estimation model to learn a relationship of a state estimation input data preprocessed from state variables including measured terminal currents and terminal voltages of the secondary battery with a charge rate or a deterioration degree of the secondary battery. The state estimation input data includes time-series data of difference gradients, which is a change rate of the differences of the terminal voltages with respect to the differences of the terminal currents.
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