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

Claim 8:
9. The wireless charging device according to claim 8, wherein the first charging unit further comprises a plurality of first demodulation circuits that are in a one-to-one correspondence with the plurality of first transmitter coils, one end of each of the first demodulation circuits is connected to the first controller, and the other end of each of the first demodulation circuits is connected to the corresponding first transmitter coil;
a first target transmitter coil is to receive a first feedback signal sent by the to-be-charged device for the first induction signal and send the first feedback signal to a corresponding first demodulation circuit, wherein the first feedback signal carries the first electromagnetic coupling strength, the first target transmitter coil detects the to-be-charged device through induction in the first transmitter coil group, and the first transmitter coil group comprises at least one first target transmitter coil; and
the first demodulation circuit connected to the first target transmitter coil is to demodulate the first feedback signal to obtain the first electromagnetic coupling strength and send the first electromagnetic coupling strength to the first controller.