Conductive wire, conductive coil, and conductive device

Patent metadata

Field	Value
Publication number	US-12327658-B2
Application number	US-202018251106-A
Country	US
Kind code	B2
Filing date	Dec 16, 2020
Priority date	Oct 30, 2020
Publication date	Jun 10, 2025
Grant date	Jun 10, 2025

Abstract

A conductive wire, a conductive coil, and a conductive device, wherein in the conductive wire, an aluminum oxide-coated nano-carbon fiber is added to a first paint layer, and a silver-coated nano-carbon fiber is added to a second paint layer. By means of such an arrangement, the coefficient of thermal conductivity of the first paint layer and the second paint layer reaches 2 to 10 W/(m·K), and therefore, the thermal conduction performance of the conductive wire can be remarkably improved, and the thermal conduction wire has an advantage of a good thermal conduction effect, with timely heat dissipation.

First claim

What is claimed is:

1. A conductive wire comprising:
a conductive core layer;
a first paint layer provided on an outer side of the conductive core layer; and
a second paint layer provided on an outer side of the first paint layer,
wherein, the first paint layer includes aluminum oxide-coated nano-carbon fibers therein, and the second paint layer includes silver-coated nano-carbon fibers therein.

2. The conductive wire according to claim 1 , wherein the nano-carbon fibers are chopped fibers, and present an anisotropic arrangement, and the chopped fiber has a diameter of 50 nm to 200 nm and a length of 500 nm to 5000 nm.

3. The conductive wire according to claim 1 , wherein each of the aluminum oxide-coated nano-carbon fiber and the silver-coated nano-carbon fiber is sheet-like structure, and maximum width of the sheet-like structure is between 100 nm and 10000 nm.

4. The conductive wire according to claim 1 , wherein in the aluminum oxide-coated nano-carbon fiber, a coating area of the aluminum oxide accounts for 60%-100% of a surface area of the nano-carbon fiber; in the silver-coated nano-carbon fiber, a coating area of the silver accounts for 60%-100% of a surface area of the nano-carbon fiber.

5. The conductive wire according to claim 1 , wherein density of the aluminum oxide-coated nano-carbon fibers is less than 1.5 g/cm3, and density of the silver-coated nano-carbon fibers is less than 1.5 g/cm3.

6. The conductive wire according to claim 1 , wherein in the aluminum oxide-coated nano-carbon fiber, mass ratio of the aluminum oxide to the nano-carbon fiber is (5-20):1; in the silver-coated nano-carbon fiber, mass ratio of the silver to the nano-carbon fiber is (5-20):1.

7. The conductive wire according to claim 1 , wherein coefficient of thermal conductivity of the first paint layer is 2 to 10 W/(m·K), coefficient of thermal conductivity of the second paint layer is 2 to 10 W/(m·K), and the coefficient of thermal conductivity of the second paint layer is not less than the coefficient of thermal conductivity of the first paint layer.

8. The conductive wire according to claim 7 , wherein the nano-coating layer has a thickness of 0.5 μm to 3 μm.

9. The conductive wire according to claim 7 , wherein the nano-coating layer is disposed between the conductive core layer and the first paint layer, and/or
the nano-coating layer is disposed between the first paint layer and the second paint layer.

10. The conductive wire according to claim 1 , wherein the conductive wire further comprises a nano-coating layer.

11. A coil formed by winding the conductive wire according to claim 1 .

12. A device comprising the coil according to claim 11 .

13. The device according to claim 12 , wherein the device comprises at least one of an acoustic device, a wireless charging device, a motor device, and a mobile terminal device.

Assignees

• Goertek Inc

Inventors

• Liang He
• Shao Minghui

Classifications

• H01B13/0036

  Details · CPC title

• H01B7/04

  Flexible cables, conductors, or cords, e.g. trailing cables · CPC title

• H01B7/0216 Primary

  Two layers · CPC title

• H01B7/0009

  Details relating to the conductive cores · CPC title

• H01B13/065

  Insulating conductors with lacquers or enamels · CPC title