Wireless charging circuit , Wireless charging device and wireless charging system

The utility model discloses a wireless charging circuit, wireless charging device and wireless charging system, wherein, wireless charging circuit includes the transmitting circuit, the transmitting circuit includes inverter circuit, transmitting coil module, first control circuit, a detection circuitry who is connected with inverter circuit and the DC power supply circuit who provides the power for inverter circuit, DC power supply circuit's input and electric wire netting are connected, a detection circuitry's sense terminal and transmitting coil module are connected, and a detection circuitry's output is connected with first control circuit's feedback receiving terminal, and first control circuit's control end and inverter circuit are connected, wherein, a detection circuitry for detect the mains voltage of transmitting coil module, first control circuit for frequency of operation according to the voltage control inverter circuit of transmitting coil module. The utility model discloses be favorable to impr