The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 15, 2026
Filed:
Aug. 12, 2022
Huawei Digital Power Technologies Co., Ltd., Shenzhen, CN;
Yuechao Li, Dongguan, CN;
Huawei Digital Power Technologies Co., Ltd., Shenzhen, CN;
Abstract
The wireless charging circuit includes an oscillation circuit and a monitoring circuit that are sequentially connected. The oscillation circuit includes an excitation voltage source, a full-bridge circuit, and an LC series circuit that are connected in series. When damped oscillation occurs in the LC series circuit, the LC series circuit outputs a resonant voltage signal during damped oscillation to the monitoring circuit. The monitoring circuit includes a comparison module and a processing module. The comparison module is configured to receive the resonant voltage signal and convert the resonant voltage signal into a digital square wave signal. The processing module is configured to receive the digital square wave signal, obtain a quantity of peaks, a quantity of troughs, or a sum of the quantity of peaks and the quantity of troughs and that is in a resonant voltage attenuation waveform, determine a quality factor Q.