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http://dx.doi.org/10.1007/s43236-021-00348-z

Equalizing charger based on multi-windings transformer and voltage-doubler rectifiers  

Wu, Chao (School of Electronics and Information Engineering, Anhui Jianzhu University)
Zhang, Hong-kai (School of Electronics and Information Engineering, Anhui Jianzhu University)
Li, Shan-shou (School of Electronics and Information Engineering, Anhui Jianzhu University)
Li, Zheng-fei (College of Electrical Engineering, Yancheng Institute of Technology)
Kan, Jia-rong (College of Electrical Engineering, Yancheng Institute of Technology)
Publication Information
Journal of Power Electronics / v.22, no.2, 2022 , pp. 297-307 More about this Journal
Abstract
Energy storage batteries are currently composed of a large number of low-voltage battery cells. The state of charge of the cells is different due to the characteristic differences between cells. This causes some of the cells to be over-charged during charging and some of the cells to be over-discharging during discharging. To improve this phenomenon, this paper proposes a battery charger with an equalizing function that works during the charging and discharging processes. A performance comparison among the proposed charger and other similar topologies is carried out. The operational principle of the proposed strategy is analyzed and a control strategy with only a single voltage loop is proposed, which can guarantee two-stage charging. Experimental results show that the proposed charger can simultaneously achieve a high efficiency and the requirement of voltage equalization between cells.
Keywords
Charger; Voltage equalizer; Constant current and constant voltage charging; Equivalent circuit;
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Times Cited By KSCI : 2  (Citation Analysis)
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