Lithium-ion battery diagnostic and prognostic techniques
US7612540B2 · kind B2 · utility
3Cited by
5References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 24, 2006 |
| Grant date | Nov 3, 2009 |
| Priority date | — |
| Expiry date | Aug 10, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Embodiments provide a method and a system for determining cell imbalance condition of a multi-cell battery including a plurality of cell strings. To determine a cell imbalance condition, a charge current is applied to the battery and is monitored during charging. The charging time for each cell string is determined based on the monitor of the charge current. A charge time difference of any two cell strings in the battery is used to determine the cell imbalance condition by comparing with a predetermined acceptable charge time difference for the cell strings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.