Multipole Elastomeric Magnet With Magnetic-field Shunt
US-2018350491-A1 · Dec 6, 2018 · US
Magnetic sheet, coil module having magnetic sheet, and non-contact power supply device
US2021183549A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2021183549-A1 |
| Application number | US-202016953590-A |
| Country | US |
| Kind code | A1 |
| Filing date | Nov 20, 2020 |
| Priority date | Dec 11, 2019 |
| Publication date | Jun 17, 2021 |
| Grant date | — |
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Abstract
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A magnetic sheet according to the present invention contains Mn—Zn ferrite as a main component and is comprised of a sheet-shaped sintered body. Besides, a ratio of Z MIN to Z MAX (Z MIN /Z MAX ×100) is 90% or more, in which a maximum value of a content of Zn in terms of oxide is set to Z MAX and a minimum value of the content of Zn in terms of oxide is set to Z MIN in a thickness direction of a cross section of the sintered body.
First claim
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What is claimed is: 1 . A magnetic sheet comprising of a sheet-shaped sintered body, wherein the sintered body contains Mn—Zn ferrite as a main component, and a ratio of Z MIN to Z MAX (Z MIN /Z MAX ×100) is 90% or more, in which a maximum value of a content of Zn in terms of oxide is set to Z MAX and a minimum value of the content of Zn in terms of oxide is set to Z MIN in a thickness direction of a cross section of the sintered body. 2 . The magnetic sheet according to claim 1 , wherein an average thickness of the sintered body is 2500 μm or less. 3 . The magnetic sheet according to claim 1 , wherein a standard deviation of the content of Zn in terms of oxide in the thickness direction of the cross section of the sintered body is 0.3 mol % or less. 4 . A coil module comprising the magnetic sheet according to claim 1 . 5 . A non-contact power supply device comprising the coil module according to claim 4 .
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Classifications
Magnetic shielding materials · CPC title
of the resonant type · CPC title
made from sheets, e.g. grain-oriented (H01F27/26 takes precedence) · CPC title
based on ferrites · CPC title
using inductive coupling · CPC title
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- What does patent US2021183549A1 cover?
- A magnetic sheet according to the present invention contains Mn—Zn ferrite as a main component and is comprised of a sheet-shaped sintered body. Besides, a ratio of Z MIN to Z MAX (Z MIN /Z MAX ×100) is 90% or more, in which a maximum value of a content of Zn in terms of oxide is set to Z MAX and a minimum value of the content of Zn in terms of oxide is set to Z MIN in a thickness direction…
- Who is the assignee on this patent?
- Tdk Corp
- What technology area does this patent fall under?
- Primary CPC classification H01F7/0215. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Jun 17 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).