Patent ID: 11870274
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 7:
8. The wireless charging device according to claim 1, wherein the first charging unit comprises a first transmitter coil group and a plurality of first inverter circuits, the first transmitter coil group comprises a plurality of first transmitter coils that are in a one-to-one correspondence with the plurality of first inverter circuits, one end of each of the first inverter circuits is connected to the first controller, and the other end of each of the first inverter circuits is connected to the corresponding first transmitter coil;
before obtaining the first electromagnetic coupling strength, the first controller is further to control each of the first inverter circuits to output a first excitation signal;
the first inverter circuit is to generate the first excitation signal and output the first excitation signal to the corresponding first transmitter coil;
the first transmitter coil is to receive the first excitation signal output by the corresponding first inverter circuit and generate and transmit a first induction signal under excitation by the first excitation signal, wherein the first induction signal is used to induce a to-be-charged device located in an induction area of the first transmitter coil; and
when the to-be-charged device is detected through induction, the first controller is further to obtain an identifier of the to-be-charged device.