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:
May. 10, 2022
Filed:
Mar. 23, 2021
Applicant:
Huawei Technologies Co., Ltd., Guangdong, CN;
Inventors:
Assignee:
HUAWEI TECHNOLOGIES CO., LTD., Guangdong, CN;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02J 50/60 (2016.01); H02J 50/10 (2016.01);
U.S. Cl.
CPC ...
H02J 50/60 (2016.02); H02J 50/10 (2016.02);
Abstract
This application provides a wireless charging foreign object detection apparatus, applied to the field of wireless charging technologies. The detection apparatus includes: an excitation coil configured to provide a time-varying magnetic field, detection coils configured to detect a foreign object, and a processor configured to determine whether a foreign object exists. The detection coils may include two detection coils, or may include at least three detection coils. The at least three detection coils may be further configured to eliminate a detection blind spot.