IP Library › Granted Patent US 10,600,561
Granted Patent B2
US 10,600,561 · App. 15/579,133 · Granted Mar 24, 2020

Coil device

Inventors: Jun Araki (Tokyo, JP); Motonao Niizuma (Tokyo, JP); Susumu Tokura (Tokyo, JP); Kentaro Furiya (Tokyo, JP); Toshio Nakamura (Tokyo, JP); Kenji Nishimura (Tokyo, JP)
Assignee: IHI CORPORATION
H01F27/34H01F27/28H01F29/12H02J50/10H01F2027/348
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Quick Facts
Patent No.
US 10,600,561
App. No.
15/579,133
Granted
Mar 24, 2020
Kind
B2
Abstract

A first coil device includes a first coil portion that faces a second coil portion of a second coil device in a first direction and includes a conductive wire, and at least one nonmagnetic member that includes a protrusion protruding to an outside of the first coil portion in a second direction orthogonal to the first direction. The nonmagnetic member includes an eddy current interrupter that interrupts a part of an eddy current generated in the nonmagnetic member.

Claims (11)

1. A first coil device that faces a second coil device in a first direction and wirelessly performs power transmission or power reception, the first coil device comprising:

a first coil portion that faces a second coil portion of the second coil device in the first direction and includes a conductive wire;

at least one nonmagnetic member that includes a protrusion protruding to an outside of the first coil portion in a second direction orthogonal to the first direction;

the nonmagnetic member includes an eddy current interrupter that interrupts a part of an eddy current generated in the nonmagnetic member;

the nonmagnetic member includes a hollow portion recessed to an opposite side from a side facing the second coil portion in the first direction such that the protrusion extends from within the recessed hollow portion, down a side wall defining the recess of the hollow portion and outward from the recessed hollow Portion in the second direction;

the protrusion having a discontinuous portion in a portion of the protrusion extending down the side wall such that the hollow portion is disconnected from a portion of the protrusion that extends outward from the recessed hollow portion in the second direction; and

the first coil portion is located within the hollow portion.

2. The first coil device according to claim 1 , wherein the eddy current interrupter is provided in the protrusion.

3. The first coil device according to claim 1 , wherein the first coil portion and the second coil portion are circular type coils.

4. The first coil device according to claim 1 , wherein the eddy current interrupter is a hole penetrating the nonmagnetic member in the first direction or a concave portion recessed in the first direction.

5. The first coil device according to claim 1 wherein an eddy current interrupter is not included in non-protrusion portions of the nonmagnetic member.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 12, 2018
From: ARAKI, JUN; NIIZUMA, MOTONAO; TOKURA, SUSUMU; FURIYA, KENTARO; NAKAMURA, TOSHIO; NISHIMURA, KENJI
To: IHI CORPORATION
Reel/Frame 045173/0312 →
Priority Claims (1)
JP 2015-114046 · Jun 4, 2015 · national
Continuity (1)
Related Publication 20180166210A1 · Jun 14, 2018