Patent ID: 11862990
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 8:
9. A method for charging an electronic device by using a wireless charging device, the method comprising:
at a processor of the wireless charging device, detecting the electronic device through at least one coil in a first coil group or a second coil group;
at the processor, transmitting a ping signal to the electronic device through each of the first coil group and the second coil group;
at the processor, identifying a position of the electronic device upon receiving a feedback signal for the ping signal from the electronic device;
at the processor, connecting a first inverter and one coil in the first coil group through a first switch and connecting a second inverter and one coil in the second coil group through a second switch; and
at the processor, wirelessly transmitting power to the electronic device by using the one coil in the first coil group and the one coil in the second coil group,
wherein the feedback signal includes a signal strength packet (SSP) signal, and
wherein a coil having a largest value of the SSP signal in the first coil group and a coil having a largest value of the SSP signal in the second coil group are selected as operating coils.