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:
Nov. 24, 2020
Filed:
Aug. 10, 2018
Yazaki Corporation, Tokyo, JP;
Keisuke Ueta, Shizuoka, JP;
YAZAKI CORPORATION, Tokyo, JP;
Abstract
A power receiving device includes a secondary coil, a synchronous rectifier circuit, a smoothing circuit, and a reverse flow suppression circuit. The secondary coil receives the alternate current power wirelessly transmitted from the primary coil. The synchronous rectifier circuit includes a switching element unit that rectifies the alternate current power received by the secondary coil into direct current power. The smoothing circuit smooths the direct current power rectified by the synchronous rectifier circuit. The reverse flow suppression circuit controls the switching element unit. For example, the reverse flow suppression circuit turns off the switching element unit of the synchronous rectifier circuit when a current flowing from the synchronous rectifier circuit to the smoothing circuit is smaller than a predetermined current threshold value.