Impact Factor:2.641
DOI number:10.1049/iet-pel.2019.0021
Journal:IET Power Electronics
Key Words:secondary cells; transformer windings; MOSFET; single-magnetic equaliser; series-connected battery strings; battery voltages; adjacent cells; complementary control signals; circuit topology; operating principles; voltage balance analysis; lithium-ion cells; automatic cell-to-cell equaliser; MOSFET; transformer winding
Abstract:This study proposes an automatic cell-to-cell equaliser to balance the battery voltages in series-connected battery strings. In the proposed equaliser, each cell needs only one MOSFET, and the adjacent cells share the transformer winding. The voltage balance is automatically realised by using a pair of complementary control signals with a fixed duty cycle. What's more, no sensing circuit is required. Consequently, the proposed equaliser is cost-effective and easy-to-realise. The circuit topology and operating principles are firstly presented. Then the voltage balance analysis is given in detail. Moreover, a design guide is also given by considering four lithium-ion cells. Finally, the validity of the proposed equaliser is verified by experimental results.
Co-author:Zou, Runmin, Su, Mei, Sun, Yao, Liu, Yonglu, Li, Xing, Wang, Hui
First Author:Liu, Fulin
Indexed by:Journal paper
Correspondence Author:Xu, Guo
Document Code:18833099
Discipline:Engineering
First-Level Discipline:Electrical Engineering
Document Type:J
Volume:12
Issue:9
Page Number:2312-2320
ISSN No.:1755-4535
Translation or Not:no
Included Journals:SCI、EI
Links to published journals:http://libdb.csu.edu.cn/rwt/EI/https/P75YPLUFN3UXT5UFMW3GT5UHP3VXZ5DBM7TT6Z5QNF/search/doc/abstract.url?&pageType=quickSearch&usageZone=resultslist&usageOrigin=searchresults&searchtype=Quick&SEARCHID=