Cell Balancing Scheme with Series Coupling of Multiple Primary Windings for Hybrid Electric Vehicle Lithium-ion Battery Cells

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Charge equalization scheme for HEV lithium-ion battery system is proposed in this paper, where all the primary windings with in parallel bi-directional switches are coupled in series to provide the equalizing energy from the whole battery string to the specific under charged cells. Moreover, to realize minimized size of equalization circuit employing the proposed cell balancing scheme, the optimal power rating design rule according to equalization time and SOC distribution of imbalance is proposed. A prototype of HEV lithium-ion battery system of four cells shows the outstanding charge equalization performance while maintaining greatly reduced size of cell balancing circuit.
Publisher
KIPE
Issue Date
2007-07
Language
KOR
Citation

2007년 전력전자학술대회, pp.347 - 349

URI
http://hdl.handle.net/10203/162459
Appears in Collection
EE-Conference Papers(학술회의논문)
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