Energy Supply Strategy for Battery Electric Vehicles

Abstract:

This paper presents an analysis of five decisive elements of the energy supply strategy for battery electric vehicles (BEVs),which include the characteristics of urban electric network,the technique of battery and charging,the usage pattern of BEVs,the effect of energy saving and emission reduction,and the constraint of urban land resources.With a consideration of these five decisive elements,this paper argues that the energy supply mode for BEVs should be different from that for traditional petrol vehicles.Energy supply of BEVs is proposed to be mainly 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 supplementary methods.Then the service function and layout requirements of the slowcharging piles,fastcharging stations and battery swap stations are proposed based on the energy supply strategy.The study results are of great importance to the energy supply system and the upcoming rigorous construction of energy supply facilities.