Battery deterioration diagnosis device and battery deterioration diagnosis method
US12345772B2 · kind B2 · utility
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Key dates
| Filing date | Feb 2, 2021 |
| Grant date | Jul 1, 2025 |
| Priority date | — |
| Expiry date | Apr 8, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
After the temperature of a battery rises to a predetermined diagnosis temperature, a charge/discharge control unit controls a charge/discharge circuit to charge or discharge the battery. A current-voltage detection unit detects current and voltage of the battery during a period in which the battery is charged or discharged. A differential voltage calculation unit calculates a differential voltage of the battery on the basis of the detected current and voltage. A deterioration state estimation unit estimates a deterioration state of the battery on the basis of a change in the calculated differential voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.