In-situ battery diagnosis method using electrochemical impedance spectroscopy
US8849598B2 · kind B2 · utility
19Cited by
5References
34Claims
0Family size
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Key dates
| Filing date | Sep 22, 2011 |
| Grant date | Sep 30, 2014 |
| Priority date | — |
| Expiry date | Sep 20, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/367
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of estimating the internal state of a first electrochemical system for power storage is disclosed. The SoC and the electrochemical impedance are determined for different internal states of a second electrochemical system of a same type as the first electrochemical system being studied. An electrochemical impedance model is then defined as a function of the SoC and of parameters. The electrochemical impedance Z of the system studied is determined and its SoC is estimated using the model applied to electrochemical impedance Z.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.