Powering and/or charging with a plurality of protocols
US-2016056664-A1 · Feb 25, 2016 · US
Wireless power transmission device
US9672973B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9672973-B2 |
| Application number | US-201414306659-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 17, 2014 |
| Priority date | Jun 27, 2013 |
| Publication date | Jun 6, 2017 |
| Grant date | Jun 6, 2017 |
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- Title
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Abstract
Official abstract text for this publication.
A wireless power transmission device includes a power feeding unit and a power receiving unit. The power feeding unit and the power receiving unit are disposed so that a principal surface of a primary magnetic core and a principal surface of a secondary magnetic core face each other across a primary winding and a secondary winding. The distance from a surface of a feeding-side shield member which faces a feeding-side coil to a surface of the feeding-side coil which faces the feeding-side shield member, is longer than the distance from a surface of a receiving-side shield member which faces a receiving-side coil to a surface of the receiving-side coil which faces the receiving-side shield member.
First claim
Opening claim text (preview).
What is claimed is: 1. A wireless power transmission device, comprising: a power feeding unit, the power feeding unit including a feeding-side coil having a primary winding and a primary magnetic core, the primary magnetic core having two principal surfaces that face each other, and a feeding-side shield member having two principal surfaces that face each other, one of the principal surfaces of the primary magnetic core and one of the principal surfaces of the feeding-side shield member being disposed so as to face each other; and a power receiving unit, the power receiving unit including a receiving-side coil having a secondary winding and a secondary magnetic core, the secondary magnetic core having two principal surfaces that face each other, and a receiving-side shield member that has two principal surfaces that face each other, one of the principal surfaces of the secondary magnetic core and one of the principal surfaces of the receiving-side shield member being disposed so as to face each other, the receiving-side coil and the receiving-side shield member being disposed so as to overlap each other, wherein the power feeding unit and the power receiving unit are disposed so that another one of the principal surfaces of the primary magnetic core and another one of the principal surfaces of the secondary magnetic core face each other across the primary winding and the secondary winding, and wherein a distance from a surface of the feeding-side shield member which faces the feeding-side coil to a surface of the feeding-side coil which faces the feeding-side shield member, is longer than a distance from a surface of the receiving-side shield member which faces the receiving-side coil to a surface of the receiving-side coil which faces the receiving-side shield member. 2. The wireless power transmission device according to claim 1 , wherein: the primary winding is a wire that is wound in a planar shape, and provided on one of the principal surfaces of the primary magnetic core which is located opposite to one of the principal surfaces of the primary magnetic core which faces the feeding-side shield member; and the secondary winding is a wire that is wound in a planar shape, and provided on one of the principal surfaces of the secondary magnetic core which is located opposite to one of the principal surfaces of the secondary magnetic core which faces the receiving-side shield member. 3. The wireless power transmission device according to claim 1 , wherein: the primary winding is a wire that is wound around the primary magnetic core in a helical shape while crossing the two principal surfaces of the primary magnetic core a plurality of times; and the secondary winding is a wire that is wound around the secondary magnetic core in a helical shape while crossing the two principal surfaces of the secondary magnetic core a plurality of times.
Assignees
Inventors
Classifications
Inductive couplings {(for wireless supply or distribution of electric power using inductive coupling H02J50/10)} · CPC title
- H01F27/36Primary
Electric or magnetic shields or screens (movable for varying inductance H01F21/10) · CPC title
- H01F27/363Primary
made of electrically conductive material · CPC title
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- What does patent US9672973B2 cover?
- A wireless power transmission device includes a power feeding unit and a power receiving unit. The power feeding unit and the power receiving unit are disposed so that a principal surface of a primary magnetic core and a principal surface of a secondary magnetic core face each other across a primary winding and a secondary winding. The distance from a surface of a feeding-side shield member whi…
- Who is the assignee on this patent?
- Tdk Corp
- What technology area does this patent fall under?
- Primary CPC classification H01F27/36. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jun 06 2017 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).