航空蓄电池能量均衡技术研究

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。

Research of energy equalization technology for aircraft battery

The inconsistency will gradually appear between monomer batteries of aircraft battery,which will reduce performance and service life of the battery,and even lead to security incidents.This paper presents a structure of active balancing for aircraft battery equalization system.A bidirectional energy transfer balanced topology is proposed based on Cúk converter,and a balancing control strategy for both top and bottom balancing is designed.An energy equalization system for aircraft Ni-Cd battery is developed.Experiments are conducted to analyze the energy equalization of Ni-Cd battery series battery.Experimental results show that the proposed energy equalizer has the characteristics of high speed,random choice of balanced single battery,and bi-directional transformation of energy.The equalizer can reduce the inconsistencies in the battery monomer,and improve the capacity utilization ratio and service life of the battery pack.