摘要
锂电池由于其优越的循环充放电性能、能量密度大、可快速充放电等优点被广泛应用于电动汽车领域。针对目前电动汽车中使用的恒流充电和脉冲充电方法,设计了一个双向的DC/DC变换器对单体锂电池在两种充电方法中的充电效率和充入电量进行了研究。实验结果表明,相比于恒流充电,脉冲充电由于其去极化作用可使电池充入更多的电量。分析了不同的负脉冲占空比对充入电量的影响,得到了选择脉冲时间的考虑因素。
Lithium-ion battery is now widely used in electric vehicle due to the great performance on cyclic charge and discharge,high energy density and the ability to be charged by large current.In view of the constant current charging method and the pulse current charging method, a hi-directional DC/DC converter used to research on the charging efficiency and charging capacity is designed.Experimental results show that compared to the constant current charging method,the pulse current charging method can charge more power.In addition,the effects of the duty cycle of the negative pulse current are analyzed and the consideration of the pulse time are proposed.
出处
《电力电子技术》
CSCD
北大核心
2016年第6期88-90,共3页
Power Electronics
基金
国家自然科学基金(51577088)
江苏省产学研合作前瞻性联合研究项目(BY2015003-008)~~
关键词
电动汽车
锂电池
快速充电
electric vehicle
lithium-ion battery
fast charging
