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:
Oct. 27, 2020
Filed:
Feb. 26, 2018
Hyundai Motor Company, Seoul, KR;
Kia Motors Corporation, Seoul, KR;
Research & Business Foundation Sungkyunkwan University, Suwon-si, Gyeonggi-do, KR;
Woo Young Lee, Yongin-si, KR;
Gyu Yeong Choe, Suwon-si, KR;
Jae Eun Cha, Gwangmyeong-si, KR;
Byoung Kuk Lee, Yongin-si, KR;
Min Kook Kim, Suwon-si, KR;
Min Jung Kim, Suwon-si, KR;
Dong Myoung Joo, Suwon-si, KR;
Jong Eun Byun, Suwon-si, KR;
Hyundai Motor Company, Seoul, KR;
Kia Motors Corporation, Seoul, KR;
Research & Business Foundation Sungkyunkwan University, Suwon-si, Gyeonggi-do, KR;
Abstract
A method for detecting a foreign object between a transmission pad and a reception pad for wireless power transfer (WPT) may comprise steps of performing a zero phase angle (ZPA) control for a power transfer converter included in or connected to the transmission pad; detecting a characteristic parameter with respect to at least one of an input current and a switching frequency of the power transfer converter; and determining whether or not a foreign object exists between the transmission pad and the reception pad according to whether the characteristic parameter with respect to at least one of the input current and the switching frequency deviates from an allowable range.