Driving system for electric vehicle

A driving system used in an electric vehicle, comprising:

• a wheel hub defining therein an accommodation space;
• a vehicle motor mounted in one side of said wheel hub, said vehicle motor comprising a rotor, and a stator having an axle inserted through the center of said wheel hub;
• a bushing sleeved onto said axle of said stator and rotatably supported on said axle by axle bearings;
• a pinion rotatably supported on said axle of said stator and connected to one end of said bushing;
• a driving wheel fixedly mounted on said bushing for synchronous rotation, said driving wheel having a plurality of transverse grooves spaced around the periphery thereof;
• a hubcap fastened to an opposite side of said wheel hub, said hubcap having an annular flange protruded from an outside wall thereof opposite to said wheel hub;
• a direct-drive active clutch mounted in the accommodation space inside said wheel hub;
• a switching push-pull plate mounted on the annular flange of said hubcap;
• a reducing clutch mounted on the annular flange of said hubcap at one side relative to said switching push-pull plate;
• a planet gear holder disposed at one side relative to said switching push-pull plate for enabling said reducing clutch to be set in between said planet gear holder and said switching push-pull plate;
• a plurality of planet gears equiangularly and pivotally mounted on said planet gear holder and meshed with said pinion;
• an outer cover covered on said wheel hub over said hubcap;
• a clutch switching unit mounted in said outer cover and adapted for selectively switching said switching push-pull plate and said direct-drive active clutch;
• and
• a tooth ring mounted inside said outer cover, said tooth ring comprising an internal gear meshed with said planet gears for enabling said planet gears to reduce the output speed of said vehicle motor and increase the output torque thereof.