Jia Jian. Jiajian electric vehicle is a registered trademark of Guofei Automobile Industry Wuxi Co., Ltd. and belongs to the Jiajian brand. Electric vehicles are electric vehicles, also known as electric vehicles. Electric vehicles are divided into AC electric vehicles and DC electric vehicles. Generally speaking, electric vehicles use batteries as their energy source and convert electrical energy into mechanical energy for movement through controllers, motors and other components. A vehicle that changes speed by controlling the amount of electric current.