关键词: 道路载荷；能耗表现；续航里程；电动汽车；能耗预测

Abstract: The endurance of pure electric vehicle is directly related to the energy consumption level of the electric drive system. Energy flow analysis of the vehicle is a necessary means to improve the development of pure electric technology. In this paper, the theoretical energy consumption of the electric drive system was deduced based on the road load coefficient of the vehicle, and the energy consumption performance of different models under china light-duty vehicle test cycle-passenger (CLTC-P) conditions at room temperature, high temperature and low temperature was teted and compared. Then, the energy consumption level of the electric drive system of the vehicle was predicted according to the deviation between the theory and practice. At the same time, the corresponding relationship between the range performance of each vehicle under different test conditions, the real power and the meter display power, the remaining range of the meter display power and the state of charge of the meter display power are analyzed, which provides reference for the optimization and development of the vehicle display control strategy.

Key words: Road load; Energy consumption performance; Driving range; Electric vehicle; Energy consumption prediction