关键词: 纯电动汽车；低温续航；Cruise；锂电池

Abstract: The promotion of the "new four modernizations" of the automotive industry is inseparable from the study of the adaptability of electric vehicles in extreme environments. From the perspective of the vehicle battery, this paper analyzes that the discharge terminal voltage and capacity of the lithium battery will decrease at low temperatures, and the internal resistance of the battery will increase, and it is deduced that the driving range of the pure electric vehicle is proportional to the voltage and capacity of the discharge terminal of the driving battery, and is inversely proportional to the internal resistance of the battery, so as to qualitatively analyze that the low temperature will reduce the driving range of the pure electric vehicle. Finally, the vehicle simulation was carried out by Cruise software, and it is concluded that under the cyclic working conditions of -15 °C, the driving range of pure electric vehicles decreased by 39.48% compared with normal temperature, while the driving range was reduced by 41.11% under the condition of 60 km/h isometric working conditions.

Key words: Pure electric vehicle; Low temperature endurance; Cruise; Lithium battery