更换模式下的锂电池组均衡充电  

Equalizing Charging of Lithium Battery Pack on Change of Mode

作　　者：程昌银[1] 王桂棠[1] 赖雄辉[1] 江跃龙[1] 

机构地区：[1]广东工业大学信息工程学院,广东广州510006

出　　处：《通信电源技术》2012年第3期36-38,41,共4页Telecom Power Technology

摘　　要：针对电动车的锂离子电池组寿命短、缺乏稳定性的问题,提出一种在更换模式下的充电均衡方案。采用了一次智能充电方式和二次均衡技术相结合,在第一次均衡设计中采用了耗散式均衡法,把多余能量以热能的形式在电阻消耗掉;在二次均衡设计中采用了能量转移的方法,通过电容把高能量电池的多余能量转移到低能量的电池中。实验表明该均衡方式得到很好的电压一致性。Aimming at the problem of short life and lack of stability for vehicle＇s Li-ion battery pack, this paper puts an equalization charging method of lithium battery on change of mode forward. The method combines a intelligence charging mode with the second equalization technology. It adopts a method of dissipation balance in first equalization design, the excess energy consumed in the resistance in the form of heat. In the second equalization design adopts energy transfer method, which divert the excess energy by capacitance to the battery of lower energy. The experiments show that the voltage of battery got a good consistency in this equalization method.

关 键 词：锂离子电池组 均衡充电 一致性 二次均衡技术 

分 类 号：TM912[电气工程—电力电子与电力传动]