Coil device and inductance-changing mechanism
US-2017103850-A1 · Apr 13, 2017 · US
Coil device
US10600561B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10600561-B2 |
| Application number | US-201615579133-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 25, 2016 |
| Priority date | Jun 4, 2015 |
| Publication date | Mar 24, 2020 |
| Grant date | Mar 24, 2020 |
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- Title
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- Abstract
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- Assignees and inventors
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- First independent claim
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- CPC / IPC classifications
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Abstract
Official abstract text for this publication.
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.
First claim
Opening claim text (preview).
The invention claimed is: 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.
Assignees
Inventors
Classifications
Preventing eddy currents · CPC title
Inductive couplings {(for wireless supply or distribution of electric power using inductive coupling H02J50/10)} · CPC title
specially adapted for charging by inductive energy transfer · CPC title
of the resonant type · CPC title
using inductive coupling · CPC title
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- What does patent US10600561B2 cover?
- 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 i…
- Who is the assignee on this patent?
- Ihi Corp
- What technology area does this patent fall under?
- Primary CPC classification H01F27/34. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Mar 24 2020 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).