Learning method and open circuit voltage estimation method of open circuit voltage estimation model of secondary battery, and state estimation method of secondary battery
US12235325B2 · kind B2 · utility
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Key dates
| Filing date | Feb 10, 2022 |
| Grant date | Feb 25, 2025 |
| Priority date | — |
| Expiry date | Jul 25, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06N3/045
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A learning method of an open circuit voltage estimation model includes training the open circuit voltage estimation model to learn a relationship of the open circuit voltage estimation input data obtained by preprocessing terminal currents and terminal voltages of a secondary battery with an open circuit voltage of the secondary battery. The open circuit voltage estimation input data includes time-series data of: the terminal currents; the terminal voltages; and difference gradients of terminal voltage differences with respect to terminal current differences.
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