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

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 bidirectiona...

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Bibliographic Details
Main Authors: Xiangwei Guo, Longyun Kang, Zhizhen Huang, Yuan Yao, Huizhou Yang
Format: Article
Language:English
Published: MDPI AG 2015-06-01
Series:Energies
Subjects:
Online Access:http://www.mdpi.com/1996-1073/8/6/5555
Description
Summary: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.
ISSN:1996-1073