전력전자학회:학술대회논문집 (Proceedings of the KIPE Conference)
- 전력전자학회 2008년도 하계학술대회 논문집
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- Pages.37-39
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- 2008
리튬-이온 배터리 충방전 균등화를 위한 3-단자 양방향 모듈 회로
A Three-Port Bidirectional Modular Circuit for Li-Ion Battery Strings Charge/Discharge Equalization Applications
- Lee, Kui-Jun (Hanyang University) ;
- Park, Nam-Ju (Hanyang University) ;
- Wang, Xiongfei (Hanyang University) ;
- Hyun, Dong-Seok (Hanyang University)
- 발행 : 2008.06.30
초록
In this paper, a three-port bidirectional modular circuit applied in charging and discharging equalization for lithium-ion battery strings is proposed. This circuit consists of four MOSFETs and one transformer which provide a simple structure to be easily modularized. Compared to conventional individual cell equalization schemes, it utilizes the transformer as the energy transfer element, allowing direct transfer of energy between arbitrary two cells of three-cell battery module, thus improving the equalization efficiency significantly by using much less number of equalizers for long battery strings. Simulation results are presented to validate the circuit operation and confirm its capability to equalize the three-cell battery module.
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