Method for estimating the state of health of lithium-ion batteries considering user charging behavior
US12411178B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 13, 2025 |
| Grant date | Sep 9, 2025 |
| Priority date | — |
| Expiry date | Feb 13, 2045 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/392
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for estimating the state of health of lithium-ion batteries considering user charging behavior is provided. Firstly, data during the cycle charging process of the actual vehicles are collected, and it is analyzed. Then, the charging process data is applied to extract health features. The obtained health features are used to establish a state of health estimation model, and the established model is used to estimate the state of health of the battery. It involves reading the charging data, analyzing the frequency and occurrence of the start charging voltage and stop charging voltage, integrating them into a heat map, and drawing the IC curve of the charging and discharging process. This enables any charging behavior to extract the health features of battery aging, and predicts the health values of the battery, thus completing the estimation of the state of health for lithium-ion batteries.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.