CONTACTLESS POWER TRANSMISSION DEVICE AND METHOD OF FABRICATING THE SAME

• US 20140145512A1
• Filed: 02/25/2013
• Published: 05/29/2014
• Est. Priority Date: 11/27/2012
• Status: Abandoned Application

• Current Assignee: Samsung Electro-Mechanics Co., Ltd. (Samsung Group)
• Original Assignee: Samsung Electro-Mechanics Co., Ltd. (Samsung Group)
• Inventors: CHOI, Dong Hyeok, JUNG, Chang Ryul, AN, Sung Yong, CHOI, Kang Ryong, RYU, Ji Man
• Application Number:
  US13/775,787
• Publication Number:
  US 20140145512A1
• Time in Patent Office: Days
• US Class Current: 307/104
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H01F 41/026 protecting methods against environmental influences, e.g. oxygen, by surface treatment magnetic particles with skin H01F1/061, H01F1/09, H01F1/24, H01F1/33 and G11B5/706
• CPC Class Codes: Y10T 29/49073 by assembling coil and core

Abstract

There is provided a contactless power transmission device including a permanent magnet disposed at the center of a coil of a receiver in order to allow the center of the coil of the receiver and the center of a coil of a transmitter to coincide, and a coating layer formed on a surface of the permanent magnet.

Claims

1. A contactless power transmission device comprising:

a permanent magnet disposed at a center of a coil of a receiver in order to allow the center of the coil of the receiver and a center of a coil of a transmitter to coincide; and

a coating layer formed on a surface of the permanent magnet.

2. The contactless power transmission device of claim 1, wherein the coating layer includes at least one metal selected from a group consisting of iron, nickel, aluminum, silicon, cobalt, and zinc, or an alloy thereof.

3. The contactless power transmission device of claim 1, wherein the coating layer includes at least one of a sendust (Fe—

Si—

Al alloy) based high magnetic permeability material, a permalloy based high magnetic permeability material, and an amorphous based high magnetic permeability material.

4. The contactless power transmission device of claim 1, wherein a thickness of the coating layer is 0.1 to 1.0 mm.

5. The contactless power transmission device of claim 1, wherein a diameter of an outermost portion of the coating layer is 10 to 30 mm.

6. The contactless power transmission device of claim 1, wherein the coating layer is formed on a cylindrical surface of the permanent magnet.

7. The contactless power transmission device of claim 1, wherein the permanent magnet has a cylindrical shape or a rectangular parallelepiped shape.

8. The contactless power transmission device of claim 1, being operated in a frequency range of 10 to 20,000 kHz.

9. A method of fabricating a contactless power transmission device, the method comprising:

preparing a permanent magnet;

forming a coating layer on the permanent magnet; and

disposing the permanent magnet having the coating layer formed thereon at a central portion of a coil of a receiver.

10. The method of claim 9, wherein the forming of the coating layer is performed using at least one metal selected from a group consisting of iron, nickel, aluminum, silicon, cobalt, and zinc, or an alloy thereof.

11. The method of claim 9, wherein the forming of the coating layer is performed using a high magnetic permeability material including at least one of a sendust (Fe—

Si—

Al alloy) based high magnetic permeability material, a permalloy based high magnetic permeability material, and an amorphous based high magnetic permeability material.

12. The method of claim 10, wherein the forming of the coating layer is performed by one of a molecular beam epitaxy (MBE) method, a sputtering method, an electroplating method, an alloying method, and a dip-coating method.

13. The method of claim 11, wherein the forming of the coating layer is performed by one of a hydrothermal synthesis method, a pulsed laser deposition (PLD) method and an atomic layer deposition (ALD) method.

14. The method of claim 9, wherein in the forming of the coating layer, the coating layer is coated at a coating thickness of 0.1 to 1.0 mm.

15. The method of claim 9, further comprising, after the forming of the coating layer, removing the coating layer formed on the permanent magnet.

16. The method of claim 9, wherein in the preparing of the permanent magnet, the permanent magnet having a cylindrical shape or a rectangular parallelepiped shape is prepared.