Equalization device, battery system and electric vehicle including the same, equalization processing program, and equalization processing method
US8493031B2 · kind B2 · utility
8Cited by
1References
11Claims
0Family size
Assignee
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Key dates
| Filing date | Nov 30, 2010 |
| Grant date | Jul 23, 2013 |
| Priority date | — |
| Expiry date | Jan 31, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/70
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An SOC of each battery cell is periodically detected, and an SOCmin and an SOCmax are determined. Battery cells having the SOCs larger than SOCmin+α are selectively discharged. After an elapse of a preset equalization processing time period, discharge of all the battery cells is stopped. The equalization processing time period is set based on a rate of change in the SOC of the battery cell subjected to discharge and a rate of change in the SOC of the battery cell not subjected to discharge such that a magnitude relationship between the SOC of the battery cell having the SOCmin and the SOC of another battery cell is not reversed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.