Charge equalization converter with parallel primary winding for series connected lithium-ion battery strings in HEV

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In this paper, a charge equalization converter with parallel-connected primary windings of transformers is proposed. The proposed work effectively balances the voltage among Lithium-Ion battery cells despite each battery cell has low voltage gap compared with its SOC. The principle of the proposed work is that the equalizing energy from all battery strings moves to the lowest voltage battery through the isolated dc/dc converter controlled by the corresponding solid state relay switch. In this paper, a prototype of four Lithium-Ion battery cells is optimally designed and implemented, and experimental results show that the proposed method has excellent cell balancing performance.
Publisher
IEEE
Issue Date
2007-10-22
Language
ENG
Citation

Power Electronics, 2007. ICPE '07. 7th Internatonal Conference, pp.795 - 800

DOI
10.1109/ICPE.2007.4692496
URI
http://hdl.handle.net/10203/162909
Appears in Collection
EE-Conference Papers(학술회의논문)
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