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航空电池组中单体电池之间会逐渐出现不一致性,会降低电池组性能和使用寿命,甚至引发安全事故。本文提出了一种基于主动均衡的航空蓄电池组能量均衡系统结构,提出了一种能量集中式双向传递的Cúk型均衡电路,设计了顶部均衡和底部均衡的均衡控制策略。开发了航空镍镉蓄电池能量均衡系统,进行了镍镉电池组能量均衡实验分析,实验结果表明新型能量均衡器具有均衡速度快、均衡电池单体可任意选择、能量双向传递的优点,通过电池组能量均衡控制能明显改善电池组内单体之间的不一致性,提高电池组容量利用率和使用寿命。
Aeronautical battery packs will gradually appear between the single battery inconsistencies, will reduce battery performance and service life, and even lead to safety incidents. In this paper, we propose an energy balance system based on active equalization for battery packs. A Cúk equalization circuit with two-way energy transfer is proposed. Equalization control strategy is designed for both top and bottom equalization. The energy balance system of the Ni-Cd battery is developed and the energy balance experiment analysis of Ni-Cd battery is carried out. The experimental results show that the new energy balancer has the advantages of equalization speed, equalization of battery cells and energy transfer in both directions. Energy balance control can significantly improve the inconsistency between cells in the battery pack and improve battery capacity utilization and service life.