纯电动汽车动力电池系统的低温性能研究

Research on Low Temperature Performance of Power Battery System on Electric Vehicle

以搭载三元锂电池的纯电动汽车为研究对象,对某纯电动汽车动力电池系统的低温性能进行试验研究,结果表明:续驶里程在-10℃时相比25℃时下降46%,电池荷电量为30%,-10℃时的峰值放电功率比25℃时衰减了51%,电池容量衰减11.6%。为低温环境下纯电动汽车的性能研究提供一定的依据。

The low-temperature performance of a pure electric vehicle power battery system is experimentally studied.The result shows that,the driving rang at-10℃is decreased by 46%compared with that at 25℃.When the state of charge of the battery is 30%,the peak power is attenuated to a certain extent.When the battery is 30%,the peak discharge power at-10℃is attenuated by 51%compared with that at 25℃,and the discharge voltage is reduced by 11.6%.It provides a certain basis for the performance research of pure electric vehicle in low temperature environment.