Contactless Charging Circuit With Wireless Feedback for Electric Vehicle

A full-bridge contactless charging circuit with wireless feedback for electric car is given.The primary side of the contactless recharging circuit transfers electricity to secondary side of electric car chassis coil.Wireless feedback circuit puts load voltage signal feedback to the control circuit of contactless charging primary side,the system automatically adjusts full-bridge converter circuit's duty cycle,to make the output power stability.In addition,the circuit detects the battery power intelligently,automatic into charging,floating filling and stop filling function.Simulation and experiments show the circuit is feasible.