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严聪,莫易敏,熊巍. 基于反激式变换器的锂电池组主动均衡电路[J]. 科学技术与工程, 2021, 21(4): 1415-1421.
Yan Cong,莫易敏,熊巍.Research on Active Equalization Circuit of Lithium Battery Pack Based on Flyback Converter[J].Science Technology and Engineering,2021,21(4):1415-1421.
基于反激式变换器的锂电池组主动均衡电路
Research on Active Equalization Circuit of Lithium Battery Pack Based on Flyback Converter
投稿时间:2020-04-30  修订日期:2020-11-17
DOI:
中文关键词:  主动均衡  反激式变换器  耦合电感  Buck-Boost变换器
英文关键词:active equalization circuit  flyback converter  coupled inductor  Buck-Boost converter
基金项目:
        
作者单位
严聪 武汉理工大学
莫易敏 武汉理工大学
熊巍 武汉理工大学
摘要点击次数: 50
全文下载次数: 9
中文摘要:
      串联锂电池组大多采用相邻电池单体间能量转移的方式进行均衡,均衡效率低、时间长。为提高锂电池组的均衡效率,本文提出一种基于反激式变换器主动均衡电路拓扑。该电路拓扑包含4个均衡模块,利用耦合电感作为储能元件将能量从电量高的电池单体转移至其余电池单体。该拓扑结构简单,便于控制,且各模块可同时均衡,有效提高均衡效率、缩短均衡时间。在Matlab/Simulink中仿真,与传统多电感均衡电路和基于双层Buck-Boost均衡电路进行对比。结果表明,本文所提出均衡电路效率高且能达到较高精度,有效提高均衡速度,缩短均衡时间。
英文摘要:
      The traditional equalization circuit which deals with the transfer of energy between adjacent cells is popular used in lithium battery pack. Nevertheless, this equalization circuit is inefficient. In order to improve the efficiency of equalization, an active equalization circuit based on flyback converter was proposed. The proposed circuit included four equalization modules. In each equalization module, energy from an overcharged cell or cells was stored temporarily in a coupling inductor, and then discharged into an uncharged cell or cells. The proposed active equalization circuit was simple, more efficient, and easy to control. To verify the proposed equalization circuit, compared with traditional multi-inductance equalization circuit and double-layer Buck-Boost equalization circuit, the topology was conducted in MATLAB / Simulink. The results show that the proposed equalization circuit has high efficiency and can achieve higher accuracy, which can effectively improve the equalization speed and shorten the equalization time.
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