Method for detecting cell state-of-charge and state-of-discharge divergence of a series string of batteries or capacitors
US8581547B2 · kind B2 · utility
5Cited by
5References
23Claims
0Family size
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Inventor
Key dates
| Filing date | Mar 31, 2009 |
| Grant date | Nov 12, 2013 |
| Priority date | — |
| Expiry date | Jan 30, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A system for charging a battery includes a battery pack having at least two lithium ion cells. A controller detects a rate of change of voltage with respect to a state of charge (dV/dSOC) of the battery pack based on a calculated dV/dSOC that represents the battery pack as a whole, without calculating dV/dSOC individually on a cell-by-cell basis. Charging is terminated when dV/dSOC reaches a predetermined value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.