Patent ID: 8513916

Claim:
A wireless charging system comprising: a charger comprising: a power input port comprising two input terminals for connecting to a power source; and a power output port comprising two first metal sheets respectively connected to the two input terminals; and an electronic device comprising: a power input port comprising two second metal sheets; a voltage conversion circuit connected to the two second metal sheets; a battery; and a rectifier and filter circuit connected between the voltage conversion circuit and the battery; wherein, when the power output port of the charger is close to and faces the power input port of the electronic device, the two first metal sheets and the two second metal sheets form two capacitors, and when the charger is connected to the power source, the voltage conversion circuit obtains an alternating current voltage with a first voltage value from the power source via the two capacitors, and the voltage conversion circuit converts the alternating current voltage with the first voltage value into an alternating current voltage with a second voltage value, and the rectifier and filter circuit converts the alternating current voltage with the second voltage value into direct current voltage and charges the battery.