标题:A Delta-Structured Switched-Capacitor Equalizer for Series-Connected Battery Strings
作者:Shang, Yunlong; Xia, Bing; Yang, Jufeng; Zhang, Chenghui; Cui, Naxin; Mi, Chris
通讯作者:Shang, YL;Shang, YL
作者机构:[Shang, Yunlong; Zhang, Chenghui; Cui, Naxin] Shandong Univ, Sch Control Sci & Engn, Jinan 250061, Shandong, Peoples R China.; [Shang, Yunlong; Xia, 更多
会议名称:2017 9th Annual IEEE Energy Conversion Congress & Exposition (ECCE)
会议日期:OCT 01-05, 2017
来源:2017 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE)
出版年:2017
页码:4493-4496
关键词:Battery equalizers; battery management systems; switched capacitors; (SCs); electric vehicles (EVs)
摘要:A delta-structured switched-capacitor equalizer (DSSCE) is proposed to achieve the automatic any-cells-to-any-cells (AC2AC) balancing for a long battery string, leading to the fast-speed and high-efficiency balancing. Only two switches are required for each battery cell, and one capacitor is set for any two cells, materializing the delta-structured switched capacitors (SC). All MOSFETs are triggered by two complementary PWM signals, and energy can be automatically and directly exchanged among all cells without the need of cell monitoring. The proposed system has the advantages of simple control, high efficiency, and direct, simultaneous, and automatic equalization among cells. A prototype system for four LiFePO4 battery cells is set up. Experimental results demonstrate the proposed topology has an improved balancing performance with a high balancing efficiency of 94.5%.
收录类别:CPCI-S
资源类型:会议论文
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