快充对高功率镍氢电池充电效率的影响研究  

EFFECTS OF FAST CHARGING ON EFFICIENCY OF Ni-MH BATTERIES

作　　者：陈实[1] 郑秋闿 王芳[1] 胡道中 

机构地区：[1]北京理工大学化工与环境学院,北京100081

出　　处：《北京工商大学学报（自然科学版）》2006年第6期5-8,共4页Journal of Beijing Technology and Business University:Natural Science Edition

基　　金：北京市重点实验室基金资助项目(SYS100070416);国家重点基础研究发展规划(973)项目(2002CB211801);国家高技术研究发展(863)计划项目(2005AA501240)

摘　　要：比较了各种倍率恒流充电和脉冲充电过程中N i-MH电池的温度和内压,进行了在动力电池工作荷电状态范围内的300周高倍率循环测试,并对循环前后电池正负极电位、储氢合金形貌、循环伏安特性的变化进行了研究.实验结果表明,高倍率充放电循环使电池性能下降的主要原因是负极合金性能的恶化.The effects of pulse charging and direct current charging technique on inner pressure and temperature of Ni-MH batteries were compared. Properties of motive batteries were investigated after 300 high-rate cycles in 30%- 80% SOC. The potential of positive, negative electrodes, appearance of hydrogen storage alloy, property of cyclic voltammetry curves before and after cycles were investigated. It proved that the main reason of lapse of Ni-MH batteries after high-rate cycles is the fading of negative electrode alloy performance.

关 键 词：NI-MH电池 快速充电 循环测试 储氢合金 

分 类 号：TM91[电气工程—电力电子与电力传动]