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Journal of Zhejiang University SCIENCE A
ISSN 1673-565X(Print), 1862-1775(Online), Monthly
2001 Vol.2 No.1 P.56-59
A NOVEL CHARGE AND DISCHARGE EQUALIZATION SCHEME FOR BATTERY STRINGS
Abstract: A novel charge/discharge equalization scheme is proposed in this paper. According to the states of batteries, two equalizing methods are adopted for equalization during different charging and discharging phases. A switched capacitor is utilized during high rate charging and discharging. During the later period of charging and discharging, an auxiliary low power DC/DC converter and the inherent switch modules of a control/monitor unit are used. So it is very simple and efficient. With the developed equalizer, the lifetime of a series battery string can be extended.
Key words: charge, discharge, equalization, battery string
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DOI:
10.1631/jzus.2001.0056
CLC number:
TM910.6
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Received:
1999-09-27
Revision Accepted:
2000-08-29
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