电池系统均衡技术研究

A Study on Battery System Equalization Technology

在电池使用过程中,一致性对电池系统的使用效率和循环寿命十分重要。因此,研究主动均衡和被动均衡两种均衡方式,以优化电池系统的一致性。在分析两种均衡方式时,提出了以压差和以SOC为目标的均衡控制策略,并通过两组实验验证了提出的均衡拓扑和控制策略的正确性。实验结果同时验证了主动均衡和被动均衡对电池一致性优化的有效性。

The consistency of battery is important for battery usage,which has a great effect on battery operating efficiency and usage life.In this paper,two kinds of battery equalization are introduced including the passive and the active equalization.In order to improve energy efficiency,the cell voltage and state of charge(SOC)based equalization strategies are discussed both in the passive and the active equalization topologies.Experiments under two different of test profiles are employed to prove the proposed methods.The experiments show that good equalization results can be obtained by the proposed methods.