公开(公告)号：US20170288465A1

公开(公告)日：2017-10-05

申请号：US15472696

申请日：2017-03-29

Applicant: TDK CORPORATION

Inventor： Masayuki SUGASAWA ,  Masayuki KOBAYASHI ,  Noriyuki FUKUSHIMA

IPC: H02J50/12 ,  H01F27/28 ,  H01F38/14 ,  H02J7/02 ,  B60L11/18

CPC classification number: H02J50/12 ,  B60L53/12 ,  H01F27/02 ,  H01F27/2823 ,  H01F27/365 ,  H01F38/14 ,  H02J7/0042 ,  H02J7/025

Abstract: A power feeding coil unit for wireless power transmission including a base portion with bottom having an opening on an upper end, a magnetic body having a plurality of magnetic plates disposed on a bottom surface of the base portion, a power feeding coil formed by winding a conductive wire on the magnetic body, a cover portion covering the opening of the base portion, and a rib extending from the base portion toward the cover portion between the plurality of magnetic plates and between the wires of the conductive wires, wherein, a distance between the rib and the cover portion is smaller than a distance between the power feeding coil and the cover portion.