A Bidirectional Cell-to-Buffer Battery Equalizer at Boundary Conduction Mode with Constant On-Time Control

doi:10.1109/ECCE47101.2021.9595030

	A Bidirectional Cell-to-Buffer Battery Equalizer at Boundary Conduction Mode with Constant On-Time Control
	Yiqing Lu1,2 ; Zhengqi Wei1,2 ; Haoyu Wang1,2
	2021-10-10
会议录名称	2021 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE)
ISSN	2329-3721
发表状态	已发表
DOI	10.1109/ECCE47101.2021.9595030
摘要	Conventioanl adjacent Cell-to-cell battery equalizer is flawed with long energy-flow-path between remote battery cells, which incurs low balancing speed and low energy efficiency. To cope with this issue, this paper proposes a novel Cell-to-Buffer (C2B) battery equalizer. The structure consists of a multplexer network and a bidirectional buck-boost equalizer unit. The multiplexer network selects in the battery cell to link the equalizer unit. The equalizer unit transfers the energy between cell and buffer to achieve targeted equalization. An auxiliary battery cell serves as a buffer to reduce the voltage ratio equalizer unit, which helps to simplify the equalizer unit design. In the equalizer unit, boundary conduction mode (BCM) is achieved with zero current detection (ZCD) and constant on-time control. BCM operation facilitates the zero-voltage-switching (ZVS) of MOSFETs. Instead of absolute equalization, a preset voltage tolerance range is defined to improve the balancing speed. An experimental platform to equalize between battery cell and buffer is built and tested. The function of ZCD is validated. Battery cell voltage is equalized within a preset voltage range via buffer.
关键词	battery equalizer boundary conduction mode constant on-time control multiplexer network zero current detection
会议地点	Vancouver, BC, Canada
会议日期	10-14 Oct. 2021
URL	查看原文
收录类别	EI ; CPCI ; CPCI-S
EI入藏号	978-1-7281-5135-9
来源库	IEEE
引用统计	正在获取...
文献类型	会议论文
条目标识符	https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/135670
专题	信息科学与技术学院信息科学与技术学院_PI研究组_王浩宇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	1.Shanghai Engineering Research Center of Energy Efficient and Custiom AI IC 2.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
推荐引用方式 GB/T 7714	Yiqing Lu,Zhengqi Wei,Haoyu Wang. A Bidirectional Cell-to-Buffer Battery Equalizer at Boundary Conduction Mode with Constant On-Time Control[C],2021.