Abstract: Aiming at the problem of power consumption prediction of pure electric vehicles， a power consumption calculation model considering the influence of environmental temperature， battery state and vehicle speed was proposed. Firstly， based on the independently developed data acquisition device， the long-term driving data of pure electric vehicles in different cities were collected as the basis of model construction. Secondly， considering the factors such as temperature， battery and speed in the actual driving process of pure electric vehicles， combined with the road driving standard of China automobile driving conditions(CATC-LT)， the power consumption model of pure electric vehicle traveling 100km was proposed. Finally， the power consumption of 100km in the actual complex environment was optimized. The results show that the root-mean-square error (RMSE) is in the range of 0.83-4.92， and the mean RMSE is 2.00， which is 77.1% lower than the RMSE of the traditional method.

Key words: battery electric vehicles; power consumption; driving conditions in China; environment temperature; battery status