Bidirectional Constant Current S2C Battery Equalizer Based on Fixed-frequency L2C3 Resonant Converter

doi:10.1109/APEC43599.2022.9773705

	Bidirectional Constant Current S2C Battery Equalizer Based on Fixed-frequency L2C3 Resonant Converter
	Zhengqi Wei; Haoyu Wang; Yiqing Lu; Guangdong Ning; Minfan Fu
	2022
会议录名称	2022 APPLIED POWER ELECTRONICS CONFERENCE EXPO. (APEC)
ISSN	1048-2334
发表状态	已发表
DOI	10.1109/APEC43599.2022.9773705
摘要	In battery equalization systems, equalization speed, control complexity and length of energy flow path are the important figures of merits (FoMs). In this paper, a bi-directional equalizer is proposed to achieve a good compromise among those three FoMs. The proposed equalizer is based on a shared L2C3 resonant converter. The common equalizer unit is in charge of bidirectional charge transfer between the entire string and any single cell. A constant balancing current is achieved with simple open-loop control at fixed frequency. The constant balancing current can be customized to achieve a fast balancing speed. Design considerations of L2C3 based bidirectional equalizer are analyzed in detail, which ensures zero-voltage switching (ZVS) among all MOSFETs during the equalization process. A prototype with eight lithium-ion battery cells is implemented. Experimental results show the proposed scheme exhibits outstanding balancing performance.
关键词	Battery equalizers battery management system (BMS) electric vehicles (EVs) L2C3 converter ZVS
会议地点	Houston, TX, USA
会议日期	20-24 March 2022
URL	查看原文
收录类别	EI
EI入藏号	978-1-6654-0688-8/22
来源库	IEEE
文献类型	会议论文
条目标识符	https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/183419
专题	信息科学与技术学院信息科学与技术学院_PI研究组_傅旻帆组信息科学与技术学院_硕士生信息科学与技术学院_博士生
作者单位	School of Information Science and Technology, ShanghaiTech University, Shanghai, China
第一作者单位	信息科学与技术学院
第一作者的第一单位	信息科学与技术学院
推荐引用方式 GB/T 7714	Zhengqi Wei,Haoyu Wang,Yiqing Lu,et al. Bidirectional Constant Current S2C Battery Equalizer Based on Fixed-frequency L2C3 Resonant Converter[C],2022.