Patent ID: 11870293
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 11:
12. A control apparatus, comprising:
an obtaining unit, configured to obtain an operating frequency of an alternating-current voltage between a first input end and a second input end of a rectifier circuit; and
an adjustment unit, configured to: when the operating frequency is less than a first frequency threshold, and capacitance values of capacitors that are in N capacitor-switch networks and that are connected to a wireless charging receiver circuit are less than a preset capacitance threshold, adjust an output level at each output end, to control a first controllable switch device and a second controllable switch device in each capacitor-switch network to be closed or opened, to increase the capacitance values of the capacitors that are in the N capacitor-switch networks and that are connected to the wireless charging receiver circuit; or
when the operating frequency is greater than a second frequency threshold, adjust an output level at each output end, to control the first controllable switch device and the second controllable switch device in each capacitor-switch network to be closed or opened, to decrease capacitance values of capacitors that are in the N capacitor-switch networks and that are connected to the wireless charging receiver circuit, wherein the first frequency threshold is less than or equal to the second frequency threshold.