Magnetic-resonance-type wireless charging circuit

The invention discloses a magnetic-resonance-type wireless charging circuit and belongs to the technical field of wireless charging. The magnetic-resonance-type wireless charging circuit comprises a high-frequency oscillating circuit and a driving circuit, the high-frequency oscillating circuit is used for generating initial oscillating signals, the driving circuit is used for adopting the initial oscillating signals to generate transmitting signals and transmitting the transmitting signals and comprises a one-stage driving sub-circuit or n-stage driving sub-circuits in alternate series connection and (n-1)-stage direct current blocking circuits, n is an integer larger than or equal to 2, and each driving sub-circuit comprises a frequency-doubled circuit and a first frequency selecting circuit which are serially connected. The initial oscillating signals generated by the high-frequency oscillating circuit are subjected to frequency doubling, so that frequency of the transmitting signals is improved, transmittable distance of the transmitting signals is guaranteed, and wireless charging effect is guaranteed. When frequency of the transmitting signals needs to reach a certain value, requirements on a switch tube are lowered, and a wireless charging circuit which is good in effect can be realized by adopting a low-cost switch tube, so that production cost of the wireless charging circuit is lowered.