Learning method, state estimation method, and state estimation device for state estimation model of secondary battery
US12099094B2 · kind B2 · utility
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Key dates
| Filing date | Feb 15, 2022 |
| Grant date | Sep 24, 2024 |
| Priority date | — |
| Expiry date | Oct 10, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01M10/48
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A learning method of a state estimation model includes training the state estimation model to learn a relationship of state estimation input data obtained by preprocessing terminal currents and terminal voltages of a 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 of terminal voltage differences with respect to terminal current differences; open circuit voltages; open circuit voltage change amounts; and integrated current values of the terminal currents.
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