Apparatus and method for battery SOH estimation, method for forming a 2D-LUT thereof
US12416675B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 20, 2022 |
| Grant date | Sep 16, 2025 |
| Priority date | — |
| Expiry date | Nov 9, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/392
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus for battery state of health (SOH) estimation, including: a DV-calculation unit (200) configured for calculating charge-derivative voltage dV/dQ according to operating parameters of a battery, and filtering the charge-derivative voltage dV/dQ; a feature detection unit (300) configured for performing a peak and threshold detection based on the filtered charge-derivative voltage dV/dQ to detect feature which fulfills requirements defined by a typical SOC range and height interval of a center graphite peak, and calculating an average temperature of the battery during a time interval corresponding to the detected feature; an estimation unit (400) configured for performing a SOH-estimate through a 2D-Look-Up-Table (2D-LUT) based on the detected feature and the average temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.