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

Claim 1:
2. The wireless charging device according to claim 1, wherein the first charging unit comprises a first inverter circuit and a first transmitter coil group comprising one or more first transmitter coils, wherein one end of the first inverter circuit is connected to the first controller and the other end of the first inverter circuit is connected to each of the first transmitter coils in the first transmitter coil group;
before obtaining the first electromagnetic coupling strength, the first controller is further to control the first inverter circuit to output a first excitation signal;
the first inverter circuit is to generate the first excitation signal and output the first excitation signal to each of the first transmitter coils;
each first transmitter coil is to receive the first excitation signal 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.