Ford Motor Company has selected Compact Power Incorporated (CPI), a subsidiary of LG Chem, to build lithium-ion battery packs for the Ford Focus Electric, which will go on sale in the us in 2011.

Alternatively, the improved storage capacity could be used to cut the size of battery packs inhalf while maintaining the current driving range, making electric vehiclesconsiderably cheaper.

In this paper, the assistant power system of hybrid electrical vehicle (HEV) was an engine with small displacement, which could charge the battery and directly drive the air-conditioning system.