Research on a Novel Power Inductor-Based Bidirectional Lossless Equalization Circuit for Series-Connected Battery Packs

Xiangwei Guo, Longyun Kang, Zhizhen Huang, Yuan Yao and Huizhou Yang
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Xiangwei Guo: New Energy Research Center of Electric Power College, South China University of Technology, Guangzhou 510640, China
Longyun Kang: New Energy Research Center of Electric Power College, South China University of Technology, Guangzhou 510640, China
Zhizhen Huang: New Energy Research Center of Electric Power College, South China University of Technology, Guangzhou 510640, China
Yuan Yao: New Energy Research Center of Electric Power College, South China University of Technology, Guangzhou 510640, China
Huizhou Yang: Huawei Technologies Co., Ltd., Shenzhen 518129, China

Energies, 2015, vol. 8, issue 6, 1-22

Abstract: Cell balancing plays an important role in preserving the life of series-connected battery packs; without a suitable balancing system, the individual cell voltages will differ over time, and the battery pack capacity will decrease quickly. This paper presents a novel power inductor-based bidirectional lossless equalization circuit. This circuit consists of several balancing sub-circuits, which allow the dynamic adjustment of the equalization path and equalization threshold. The simulation and experiment results demonstrate that the proposed circuit, which features a simple control method, fast balancing, and a large equalization current, exhibits outstanding equalization performance.

Keywords: series-connected battery pack; bidirectional lossless equalization; power inductor (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2015
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (10)

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