logo

For the Inventor, By the Inventor

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.:

US 9558882 B1

PDFFull Text
Date of Patent:
Jan. 31, 2017

Filed:

Nov. 20, 2014

Power feeding coil unit and wireless power transmission device

Applicant:

Tdk Corporation, Tokyo, JP;

Inventors:

Noritaka Chiyo, Tokyo, JP;

Takeshi Kamono, Tokyo, JP;

Narutoshi Fukuzawa, Tokyo, JP;

Toshinori Matsuura, Tokyo, JP;

Tetsuya Nishiyama, Tokyo, JP;

Assignee:

TDK CORPORATION, Tokyo, JP;

Attorney:

Oliff PLC

Primary Examiner:

Tuyen Nguyen

Int. Cl.
CPC ...
H01F 5/00 (2006.01); H01F 27/34 (2006.01); H01F 27/28 (2006.01); H01F 38/14 (2006.01); H02J 5/00 (2016.01); H01F 27/24 (2006.01); H01F 27/42 (2006.01); H01F 38/00 (2006.01); H01F 37/00 (2006.01); B60L 11/00 (2006.01); H01F 27/38 (2006.01); H02J 7/02 (2016.01); H02J 7/00 (2006.01); H02J 17/00 (2006.01);
U.S. Cl.
CPC ...
H01F 27/346 (2013.01); B60L 11/00 (2013.01); H01F 5/00 (2013.01); H01F 27/24 (2013.01); H01F 27/28 (2013.01); H01F 27/38 (2013.01); H01F 27/42 (2013.01); H01F 37/00 (2013.01); H01F 38/00 (2013.01); H01F 38/14 (2013.01); H02J 5/005 (2013.01); H02J 7/0042 (2013.01); H02J 7/025 (2013.01); H02J 17/00 (2013.01);
Abstract

A power feeding coil unit includes a power feeding coil, and an auxiliary coil. The auxiliary coil is arranged not to interlink with a magnetic flux that interlinks with a power receiving coil that is arranged to face the power feeding coil during power feeding. An axial direction of the auxiliary coil is nonparallel to an opposing direction of the power feeding coil and the power receiving coil. A direction of circulation of a magnetic flux generated by the auxiliary coil is opposite to a direction of circulation of a magnetic flux generated by the power feeding coil.

Find Patent Forward Citations

Loading…