摘要
针对串联动力蓄电池在充电过程中各单体电池存在的不一致性,提出了一种基于储能电感对称分布的均衡充电电路。详细分析了均衡电路的工作原理及均衡工作过程,并根据蓄电池充电态动态模型建立的端电压与电池荷电状态之间关系,解决了均衡电路开关器件脉冲占空比计算问题,使各单体电池荷电状态在充电过程中实现均衡。实验表明,该方法能快速实现电池间能量的动态转移,有效弥补电池组的不一致性,充分发挥动力电池的性能。
In view of the un-uniformity with each cell of series-connected traction battery bank in a serial charging scheme,a charge equalization circuit with inductor symmetrically distributed is proposed.The operating principle and equalizing process are analyzed in detail in this paper.Taking advantage of the relationship between the terminal voltage of battery and the state of charge（SOC） based on the reactive battery circuit model,the duty ratio of switching device in the charge-equalizing circuit can be calculated and the uniformity of SOC in each cell should be implemented during charging-time.It is confirmed by the experiment that the energy among the batteries could be dynamically transferred with this method.As a result,this means make up the un-uniformity of battery and improve the performance as well.
出处
《电工技术学报》
EI
CSCD
北大核心
2010年第10期136-141,共6页
Transactions of China Electrotechnical Society
关键词
电感
动力蓄电池
均衡充电
荷电状态
Inductor
traction battery
equalizing charge
state of charge
