4Scotland WWF. The Role of Electric Vehicles in Scotland' sLow Carbon Future [ R ]. Scotland : WWF Scotland,2010.
5The Alpiq Group. Electric Vehicle Market Pen- etration inSwitzerland by 2020 [ R ]. Switzer- land: The Alpiq Group,2010.
6Helena Spongenberg. EU States Plug in to E- lectric Cars [ EB/OL ]. http ://euobserver. corn /882/26594. [2010 - 10 - 10].
7IET Transport Desk. UK Grid Capaci- ty' Sufficient' forElectrie Vehicles [ R ] . Eng- land: The Institution of Engineeringand Tech- nology, 1 May 2009.
8The Research on Power Supply Mode for Pure Electric Vehicle [ A ] Proceedings of 2010 The 3rd International Conference on Pow- er Electronics and Intelligent Transportation System( Volume 2) [ C ] ,2010.