Energy Supply Strategy for Battery Electric Vehicles in China

The energy supply strategy is crucial to promote the application of Battery Electric Vehicles (BEVs). This paper analyzes five decisive elements of the energy supply strategy, which include the characteristics of Chinese urban electric network, the technique of battery and charging, the usage pattern of battery electric vehicles, the effect of energy saving and emission reduction, and the constraint of urban land resources. Considering these five decisive elements, this paper argued that the energy supply mode of BEVs should be different from that of traditional petrol vehicles. Energy supply of BEVs is mainly to be dependent on charging at night during the low electric demand period. The modes of quick-charging in the daytime and battery-replacing should act as subsidiary supply methods. Then the service function and layout requirements of the normal-charging station, fast-charging station and battery-replacing station are proposed based on the energy supply strategy. The results of this paper are of great importance to improve the energy supply system and guide the upcoming rigorous construction of energy supply facilities.