基于最优路径选择的电池组主动均衡方法研究

Battery Active Equalization Method Based on Optimal Path Selection[JZ)]

摘要:

蓄电池应用过程中,由于单体之间的材料差异会出现单体间剩余容量的不平衡问题,进而会引发很多安全隐患；针对此问题,基于最优路径选择原理,提出了一种主动均衡方法；该方法通过蓄电池组使用过程中的实时反馈电压数据,结合最优路径选择,通过单体之间多对多的平衡方式,实现了蓄电池组各个单体过充、欠充、过放、过温情况下相互之间的均衡；实验结果表明,该方法能够在蓄电池使用过程中,针对单体之间的不平衡状况,基于不平衡度计算进行最优均衡路径组合的确立,针对不同充放电电流状况均衡效率均在80%以上,能够快速高效地实现电池组的主动均衡。

Abstract:

During the battery application process, the remaining capacity imbalances problem will occur due to material differences between monomers, and thus will lead to a lot of security risks. To solve this problem, based on the optimal path selection principle, a kind of active equalization method was studied. In this method, the process of using batteries for real-time feedback voltage data, combined with optimal path selection, through a balance between monomers to-many waysin case of every single battery overcharge, charge less, over discharge, over-temperature. Experimental results showed that the method could use the process in the battery for the imbalance between the monomer, based on calculations unbalance the establishment of optimal equilibrium path combination, for different charge and discharge current situation were balanced efficiency above 80% that being able to quickly and efficiently implement active balance of the battery pack.