Method and apparatus for balancing multi-cell lithium battery systems
US7126312B2 · kind B2 · utility
67Cited by
4References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 28, 2004 |
| Grant date | Oct 24, 2006 |
| Priority date | — |
| Expiry date | Jul 28, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method and apparatus of the present invention are designed to equalize cell-to-cell imbalances in a multi-cell lithium battery system. A time-to-balance parameter is calculated for each cell at the beginning of charge, and balancing occurs for each cell having a positive time-to-balance at the beginning of charge. Alternatively, the time-to-balance parameter is calculated during operation of the battery system and equalization of the cells occur in-sit based on the time-to-balance values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.