State of health recognition of secondary batteries
US7605591B2 · kind B2 · utility
3Cited by
0References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 28, 2006 |
| Grant date | Oct 20, 2009 |
| Priority date | — |
| Expiry date | Apr 18, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/367
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An invention is provided for determining a state of health of a battery. The invention includes applying a predefined load profile to a battery, and obtaining a plurality of battery response voltage data corresponding to points along the predefined load profile. A matrix of parameters, which includes, among other data, battery ohm resistance data, battery chemical resistance data, and battery electrical double layer capacity data, is calculated from the battery response voltage data. Thereafter, the matrix of parameters is utilized to determine the state of health of the battery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.