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:
Jun. 05, 2018
Filed:
Feb. 22, 2016
Applicant:
Tdk Corporation, Tokyo, JP;
Inventors:
Assignee:
TDK CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02J 50/12 (2016.01); H02J 7/02 (2016.01); B60L 11/18 (2006.01); H01F 38/14 (2006.01);
U.S. Cl.
CPC ...
H02J 50/12 (2016.02); B60L 11/182 (2013.01); H01F 38/14 (2013.01); H02J 7/025 (2013.01);
Abstract
A coil unit, a wireless power feeding device, a wireless power receiving device, and a wireless power transmission device are provided that are capable of reducing high voltage induced on the metal part. A coil unit Luincludes a power transmission coil L, a first reactance circuit Xthat is connected to one end portion of the winding of the power transmission coil Land forms a resonant circuit together with the power transmission coil L, a metal part SD disposed on the same side as the back side of the power transmission coil L, and a first adjustment capacitor Cconnected between the other end portion of the winding of the power transmission coil Land the metal part SD.