基于双向 Buck-Boost 电路的多电感主被动均衡方法研究

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DOI：10.16652/j.issn.1004-373x.2026.10.012

引用格式： ， ， ， 等. 基于双向 Buck-Boost 电路的多电感主被动均衡方法研究 [J]. 现代电子技术， 2026， 49（10）： 78-85.

中图分类号：TN86-34；TM912

文献标识码：A

文章编号：1004-373X（2026）10-0078-08

Method of multi-inductor active-passive equalization based on bidirectional Buck-Boost circuit

Wang Zhicheng， Liu Wen， Huang Zehai， Wang Zhicong

（School of Electronics and Electrical Engineering， East China University of Technology， Nanchang ， China）

Abstract： In allusion to the issues of slow balancing speed and low precision during charging/discharging processes of pack equalization circuit topologies and control methods in existing lithium battery， a method of multi-inductor active-passive hybrid equalization based on a bidirectional Buck-Boost circuit is proposed. In this method， a multi-inductor active equalization topology is combined with a passive resistor network to realize the equalization between efficient energy transfer and refined terminal. The active equalization with an alternating multi-inductor structure can improve equalization efficiency while reducing equalization losses. The passive equalization can use voltage as the criterion at the end of charging and discharging to avoid overcharging or over-discharging. A dual-variable segmented equalization strategy based on voltage and state of charge （SOC） is proposed. Taking six series-connected 32650 lithium iron phosphate batteries as the experimental object， a simulation model was built on the Matlab/Simulink simulation platform to compare three types of different equalization circuits. The experimental results show that compared with other equalization circuits， the proposed method can improve the average equalization efficiency by 13.9%， 22.0% and 20.3% under static， charging and discharging conditions respectively. The equalization loss is only 1.54%， the charging accuracy is increased by 1.08%， and the discharging speed is reduced by 2.39%， which verifies its high efficiency and safety.

Keywords： Buck-Boost circuit; active-passive equalization; lithium iron; multi-inductor; SOC; equalization strategy

0 引言

锂电池组在使用过程中，通常需要将单个锂电池串联或并联来提升电压等级和容量 [1-2] 。（剩余8995字）