An Active and Passive Hybrid Battery Equalization Strategy Used in Group and between Groups

作者：Mingyu Gao, Jifeng Qu, Hao Lan, Qixing Wu, Huipin Lin, Zhekang Dong, Weizhong Zhang · 发表于：Electronics · 年份：2020 · DOI：10.3390/electronics9101744 · 被引用次数：39 · 研究领域：Advanced Battery Technologies Research、Advancements in Battery Materials、Advanced battery technologies research

Active battery equalization and passive battery equalization are two important methods which can solve the inconsistency of battery cells in lithium battery groups. In this paper, a new hybrid battery equalization strategy combinfigureing the active equalizing method with a passive equalizing method is proposed. Among them, the implementation of the active equalizing method uses the bidirectional Flyback converter and Forward converter. This hybrid equalizing strategy adopts the concept of hierarchical equilibrium: it can be divided into two layers, the top layer is the equalization between groups, and the bottom layer is the equalization of group. There are three active equilibrium strategies and one passive equilibrium strategy. For verification purposes, a series of experiments were conducted in MATLAB 2018b/Simulink platform. The simulation and experiment results show that this hybrid battery equalizing method is efficient and feasible.