Conductive wire, conductive coil, and conductive device

Patent metadata

Field	Value
Publication number	US-12548692-B2
Application number	US-202018251080-A
Country	US
Kind code	B2
Filing date	Dec 16, 2020
Priority date	Oct 30, 2020
Publication date	Feb 10, 2026
Grant date	Feb 10, 2026

Abstract

The present disclosure discloses a conductive wire, a conductive coil, and a conductive device, wherein in the conductive wire, a metal oxide-coated carbon material is added to a first paint layer, and a silver-coated carbon material 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 metal oxide-coated carbon material therein, and the second paint layer includes silver-coated carbon material therein, the mass of the metal oxide-coated carbon material accounts for 40% to 85% of total mass of the first paint layer, and mass of the silver-coated carbon material accounts for 40% to 90% of total mass of the second paint layer.

2 . The conductive wire according to claim 1 , wherein the metal oxide includes at least one of magnesium oxide, tin oxide, aluminum oxide, nickel oxide, cobalt oxide, manganese oxide, iron oxide, copper oxide and zinc oxide, and the carbon material includes at least one of graphene, carbon nanotubes and carbon fibers.

3 . The conductive wire according to claim 1 , wherein density of the metal oxide-coated carbon material is less than 1.5 g/cm 3 , and density of the silver-coated carbon material is less than 1.5 g/cm 3 .

4 . The conductive wire according to claim 1 , wherein each of the metal oxide-coated carbon material and the silver-coated carbon material has a sheet-like structure, and maximum width of the sheet-like structure is between 100 nm and 10000 nm.

5 . 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 thermal conductivity of the first paint layer.

6 . The conductive wire according to claim 1 , wherein the carbon material in the first paint layer and the carbon material in the second paint layer are the same or different.

7 . The conductive wire according to claim 1 , wherein the conductive wire further comprises a nano-coating 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 . A coil formed by winding the conductive wire according to claim 1 .

11 . A device comprising the coil according to claim 10 .

12 . The device according to claim 11 , 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

• H01F27/2876

  Cooling (cooling transformers and inductances in general H01F27/08) · CPC title

• H01F5/00

  Coils (superconducting coils H01F6/06; fixed inductances of the signal type H01F17/00) · CPC title

• H01B7/428 Primary

  Heat conduction · CPC title

• C09D1/00

  Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances · CPC title

• H01F5/06 Primary

  Insulation of windings · CPC title