摘要
氢镍电池具有安全性好、耐过充电和过放电及低温性能好的优点,非常适合于混合动力电动车的使用,但当前国内的动力氢镍电池性能仍不能完全满足混合动力车的功率需求,尤其是整车制动时能量回馈吸收的大电流充电接受能力不足。通过采用在泡沫镍集流体上覆石墨烯、优化电极的电化学储能与物理储能比例、调整电极的面电流密度、调整隔膜厚度,明显提高了电池的输入输出功率。模拟工况和实车试用结果表明,新开发氢镍电容电池电源系统能更好地满足混合动力车启动、刹车和爬坡时对瞬时高功率和持续辅助功率支持的工况需求,明显降低了整车油耗及排放。
Better safety, endurance for overcharge ＆ overdischarge and excellent performance of the Ni/MH battery at low temperature make it most suitable for HEV as for the inter- mediate power storage, but the lower specific power and calendar life still make it hardly to meet all re- quirements of the HEV, especially, the recharge performance is not capable to regenerate the HEV braking feedback energy. In this paper, doped-graphene foamed-nickel as the current collector base material was adopted, the electron storage proportion of electrochemistry and physics was investigated, the effect of current density on voltage plateau of the electrode was analyzed, and the thickness of the separator was optimized to improve the high-rate input and output power of the battery. The result of the simulation and HEV application test showed that the developed nickel metal hydride battery capacitor power source system had better pulse power to regenerate the braking energy, better durative auxiliary power for hill-climbing, and realize the energy-sav- ing and low-emission on the HEV.
出处
《电池工业》
CAS
2014年第1期7-11,共5页
Chinese Battery Industry
关键词
氢镍电容电池
动力电源系统
比功率
比能量
混合动力车
nickel metal hydride battery capacitor
traction power source system
specific power
specific energy
hybrid electric vehicle
