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Energies 2015, 8(6), 5555-5576; doi:10.3390/en8065555

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

1
New Energy Research Center of Electric Power College, South China University of Technology, Guangzhou 510640, China
2
Guangdong Key Laboratory of Clean Energy Technology, South China University of Technology, Guangzhou 510640, China
3
Huawei Technologies Co., Ltd., Shenzhen 518129, China
*
Author to whom correspondence should be addressed.
Academic Editor: K.T. Chau
Received: 2 April 2015 / Revised: 28 May 2015 / Accepted: 2 June 2015 / Published: 9 June 2015
(This article belongs to the Collection Electric and Hybrid Vehicles Collection)

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. View Full-Text
Keywords: series-connected battery pack; bidirectional lossless equalization; power inductor series-connected battery pack; bidirectional lossless equalization; power inductor
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Guo, X.; Kang, L.; Huang, Z.; Yao, Y.; Yang, H. Research on a Novel Power Inductor-Based Bidirectional Lossless Equalization Circuit for Series-Connected Battery Packs. Energies 2015, 8, 5555-5576.

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