并联蓄电池组电压均衡拓扑结构优化

The Topology Optimization of Parallel Battery Voltage Balancing

在工业现场应用过程中,单块电池容量无法满足用电负载对运行时间的需求,因此需要采用并联结构增加电池包容量。由于各个电池间存在容量、内阻、路端电压等方面的差异,在并联使用过程中电池间的差异会逐渐增大,甚至反极而发生火灾。通过分析造成并联电池包提前失效的原因,深入研究电池包均衡充电控制的方法,在此基础上提出一种蓄电池并联连接拓扑结构优化方法,并进行相关试验,进一步说明该拓扑的有效性。

In the industrial application process,the capacity of a single battery can not satisfy the demand of the running time of the electrical load.Therefore,it is necessary to adopt parallel structure to increase battery capacity.Due to differences in capacity,internal resistance and terminal voltage between the various batteries,the difference between batteries will gradually increase in parallel using.Even a fire will break out.By analyzing the reason for premature failure of parallel battery,the method of equalization charge control for battery is further studied.On this basis,a topology optimization method for parallel topology of batteries is proposed.And relevant experiments are carried out to illustrate the validity of the topology.