公开(公告)号：US10410787B2

公开(公告)日：2019-09-10

申请号：US15800957

申请日：2017-11-01

Applicant: WITS CO., Ltd.

Inventor： In Wha Jeong ,  Ki Hong Kim ,  Young Woon Choi ,  Young Seung Roh

IPC: H01F27/42 ,  H02J50/12 ,  H02J7/02 ,  H02M7/537 ,  H01F27/28 ,  H01F3/10 ,  H01F5/00 ,  H01F38/14 ,  H02M7/48

Abstract: A coil module includes a magnetic substance plate, a first coil, and a second coil. The magnetic substance plate includes a first area having a first magnetic permeability and a second area having a second magnetic permeability. The first coil is disposed on a surface of the magnetic substance plate. The second coil is disposed on the surface of the magnetic substance plate and partially overlapping the first coil. A portion of the first coil, not overlapping the second coil, is disposed on a surface of the first area, and a portion of the second coil, not overlapping the first coil, is disposed on a surface of the second area.