Wireless charging coil enameled wire with magnetic nano-iron oxide material inner layer, and preparation method thereof

A ferrite material, magnetic nanotechnology, applied in conductive materials, conductive materials, bendable cables, etc., can solve the hidden dangers of insecurity, can not fully improve the magnetoelectric conversion efficiency of wireless charging coils, low magnetostriction and other problems , to achieve the effect of improving magnetic coupling efficiency, wireless charging efficiency, and magnetoelectric conversion efficiency

Active Publication Date: 2020-07-28
杭州存宝科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, most of the enameled wires of wireless charging coils in the prior art are copper cores or copper-clad aluminum cores plus an insulating layer structure, such as Chinese patent 201020632225.6, or only a certain layer of enameled wire is improved, such as 201810903736.8. The magnetoelectric conversion efficiency of the wireless charging coil cannot be fully improved, and it has low magnetostriction and potential safety hazards

Method used

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  • Wireless charging coil enameled wire with magnetic nano-iron oxide material inner layer, and preparation method thereof
  • Wireless charging coil enameled wire with magnetic nano-iron oxide material inner layer, and preparation method thereof
  • Wireless charging coil enameled wire with magnetic nano-iron oxide material inner layer, and preparation method thereof

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Effect test

Embodiment 1

[0048] Such as figure 1 As shown, it is a structural diagram of a wireless charging coil enameled wire with a magnetic nano-ferrite inner layer provided in this embodiment. The wireless charging coil enameled wire includes an inorganic insulating outer layer 1, a conductive middle layer 2 and a magnetic nanometer from outside to inside. Ferrite material inner layer 3; inorganic insulating outer layer 1 and conductive inner layer 2 are evenly distributed on the outer circular arc of magnetic nano-ferrite material inner layer 3, and the interval distribution of inorganic insulating outer layer 1 and the interval distribution of conductive inner layer 2 Staggered from each other, the angle α of the interval distribution is 15°, and the interval distribution pores 4 are filled with insulating materials;

[0049] The inorganic insulating outer layer is polydecanediamine sebacate, an insulating polymer;

[0050] The conductive middle layer is Fe 30 co 50 B 10 Doped silver-copper...

Embodiment 2

[0075] Such as figure 2 As shown, it is a structural diagram of a wireless charging coil enameled wire with a magnetic nano-ferrite inner layer provided in this embodiment. The wireless charging coil enameled wire includes an inorganic insulating outer layer 1, a conductive middle layer 2 and a magnetic nanometer from outside to inside. Ferrite material inner layer 3; inorganic insulating outer layer 1 and conductive inner layer 2 are evenly distributed on the outer circular arc of magnetic nano-ferrite material inner layer 3, and the interval distribution of inorganic insulating outer layer 1 and the interval distribution of conductive inner layer 2 Consistent, the angle α of the interval distribution is 18°, and the interval distribution pores 4 are filled with insulating materials;

[0076] The inorganic insulating outer layer is polyamide-imide insulating polymer;

[0077] The conductive middle layer is Fe 40 co 30 B 20 Doped silver-copper alloys;

[0078] The magnet...

Embodiment 3

[0100] Such as image 3 As shown, it is a structural diagram of a wireless charging coil enameled wire with a magnetic nano-ferrite inner layer provided in this embodiment. The wireless charging coil enameled wire includes an inorganic insulating outer layer 1, a conductive middle layer 2 and a magnetic nanometer from outside to inside. Ferrite material inner layer 3; inorganic insulating outer layer 1 and conductive inner layer 2 are evenly distributed on the outer circular arc of magnetic nano-ferrite material inner layer 3, and the interval distribution of inorganic insulating outer layer 1 and the interval distribution of conductive inner layer 2 Staggered, the angle α of the interval distribution is 20°, and the interval distribution pores 4 are filled with insulating materials;

[0101] The outer layer of inorganic insulation is polyethyl acrylate;

[0102] The conductive middle layer is Fe 50 co 40 B 30 Doped silver-copper alloys;

[0103] The magnetic nano-ferrite...

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Abstract

The invention provides a wireless charging coil enameled wire with a magnetic nano ferrite material inner layer, and a preparation method of the wireless charging coil enameled wire. The wireless charging coil enameled wire sequentially comprises an insulating macromolecule polymer outer layer, a FeaCobBc doped silver-copper alloy conductive middle layer and a piezomagnetic nanoparticle doped polyvinylpyrrolidone nanofiber ferromagnetic ceramic material inner layer from outside to inside, wherein the inorganic insulating outer layer and the conductive inner layer are distributed on the outer side arc of the magnetic nano ferrite material inner layer at intervals, the angle of the interval distribution is 15-20 degrees, the interval distribution pores are filled with an insulating material,and the weight ratio of the outer layer to the middle layer to the inner layer is (1-5):(8-10):(3-5). According to the magnetic nano ferrite solid core with the piezoelectric property, the conductivemiddle layer and the insulating outer layer, the flexibility and the bending property of the enameled wire can be improved, the electricity generation property of the enameled wire after piezoelectricity is further improved, and the enameled wire of the wireless charging coil has high magnetostriction, high magnetoelectric conversion efficiency and high safety performance.

Description

technical field [0001] The invention belongs to the technical field of electroless coil enameled wires, and in particular relates to a wireless charging coil enameled wire with an inner layer of magnetic nano-ferrite material and a preparation method thereof. Background technique [0002] In recent years, due to its unique advantages, wireless power transmission has been widely used in various fields, such as consumer electronics such as mobile phones, tablet computers, household appliances, smart homes and human implanted medical devices, in robots, electric vehicles It has also been applied in high-power wireless charging systems, and the practical research on rail transit and magnetic levitation vehicles is also in-depth. With the continuous maturity of WPT technology, the application field will continue to expand. [0003] With the rapid upgrading of electronic products, more and more external power cords not only occupy space, but also have various safety hazards, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/00H01B1/02H01B7/02H01B7/04H01B3/30H01B13/00
CPCH01B1/02H01B1/026H01B3/30H01B7/0009H01B7/0208H01B7/04H01B13/00
Inventor 李斌阮霄
Owner 杭州存宝科技有限公司
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