Patent ID: 11923690
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A wireless charging apparatus comprising a voltage conversion circuit, an excitation coil, n resonance coils, and a controller, wherein n is an integer greater than or equal to 3, wherein
the voltage conversion circuit is connected to the excitation coil and is configured to convert a power grid voltage into a high-frequency alternating current voltage;
the excitation coil is configured to generate a magnetic field based on the high-frequency alternating current voltage;
the n resonance coils are arranged in different directions and are configured to conduct the magnetic field; and
the controller is configured to monitor power statuses of the n resonance coils, and enable or disable the n resonance coils based on the power statuses.