Battery monitoring and testing system and methods thereof
US11262412B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 13, 2020 |
| Grant date | Mar 1, 2022 |
| Priority date | — |
| Expiry date | Apr 13, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/70
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Systems and methods of monitoring and testing a battery module, including generating Electrochemical Impedance Spectra (EIS) of one or more battery modules, fitting the EIS spectra to an equivalent circuit model to establish equivalent circuit fit parameters, measuring an open circuit voltage of the one or more battery modules, measuring a temperature of the one or more battery modules, combining the EIS equivalent circuit fit parameters with measured open circuit and temperature values to determine weighting parameters of the equivalent circuit fit parameters, applying the weighting parameters to the equivalent circuit fit parameters to generate weighted equivalent circuit fit parameters, and generating a state-of-health (SoH) measurement of the one or more battery modules based on the weighted equivalent circuit fit parameters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.