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Integrated electromagnetic induction coil for wireless charging and preparation method thereof

A technology that integrates electromagnetic and induction coils. It is used in transformer/inductor coils/windings/connections, inductance/transformer/magnet manufacturing, transformer/inductor cores, etc. It can solve the problem that mass production cannot be realized and product performance cannot be guaranteed. , complex process routes, etc., to achieve the effect of improving wireless charging efficiency, low cost, and simple operation method

Active Publication Date: 2016-07-20
ADVANCED TECHNOLOGY & MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The technical process described in this patent is complex and cannot be mass-produced
[0006] At present, in the wireless charging technology, how to integrate the coil into the magnetic material is the technical route that all researchers are eager to realize. However, due to the limitation of the processing technology of the magnetic material and the product structure, similar technologies are relatively Rare, the process route described in the existing technology is also relatively complicated, mass production is difficult, and the performance of the product cannot be guaranteed

Method used

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  • Integrated electromagnetic induction coil for wireless charging and preparation method thereof
  • Integrated electromagnetic induction coil for wireless charging and preparation method thereof
  • Integrated electromagnetic induction coil for wireless charging and preparation method thereof

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preparation example Construction

[0041] The preparation method of the above-mentioned integrated electromagnetic induction coil for wireless charging comprises the following steps:

[0042] Step 1. Fixing: Fix the coil on the template.

[0043] The template has the characteristics of high temperature resistance, it will not soften or deform during the drying process, and plastic products that can withstand high temperature can be used; the template is generally as figure 2 As shown, it has a three-dimensional shape and is provided with a cover. After fixing the coil, add scales, and finally cover the cover after being fixed and shaped; It is not removed afterwards, it is directly used as a protective part of the product.

[0044] Step 2, stacking: stacking amorphous or nanocrystalline scales in layers.

[0045] The specific operation is: sieve the amorphous or nanocrystalline scales, and scatter the center of the coil, the periphery of the coil, and the upper or lower surface of the coil accumulated on the...

Embodiment 1

[0068] The preparation method of the integrated electromagnetic induction coil for wireless charging in this embodiment includes the following steps:

[0069] (1) Heat treatment: Carry out heat treatment to the amorphous strip material, the temperature is 400 ℃, the time is 90 minutes, obtain the strip material after heat treatment; This amorphous strip material is made of Fe 78 Si 9 B 13 (at.%) alloy was formed with a thickness of 20 μm and a width of 142 mm.

[0070] (2) Crushing treatment: the heat-treated strip is crushed by a universal pulverizer, and then sieved by a sieve to form amorphous scales with a particle size of 0.3 mm.

[0071] (3) Fixing and stacking: the coil is pre-fixed on the bottom of the template, and then the amorphous scale is spread on the periphery and center of the coil in an overlapping manner to fill the shell as the template, and finally prepare a thickness of 2.5mm product; the thickness of this product is: the thickness of the product after ...

Embodiment 2

[0075] The preparation method of the integrated electromagnetic induction coil for wireless charging in this embodiment includes the following steps:

[0076] (1) Heat treatment: Carry out heat treatment to the amorphous strip material, the temperature is 400 ℃, the time is 90 minutes, obtain the strip material after heat treatment; This amorphous strip material is made of Fe 78 Si 9 B 13 (at.%) alloy was formed with a thickness of 20 μm and a width of 142 mm.

[0077] (2) Crushing treatment: the heat-treated strip is crushed by a universal pulverizer, and then sieved by a sieve to form amorphous scales with a particle size of 0.5 mm.

[0078] (3) Fixing and stacking: the coil is pre-fixed on the bottom of the template, and then the amorphous scale is spread on the periphery and center of the coil in an overlapping manner to fill the shell as the template, and finally prepare a thickness of 2.5mm product; the thickness of this product is: the thickness of the product after ...

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Abstract

The invention belongs to the related technical field of wireless charging, and particularly relates to an integrated electromagnetic induction coil for wireless charging and a preparation method thereof. The integrated electromagnetic induction coil is formed by integral preparation of a magnetic conducting material and a coil; the magnetic conducting material is prepared from amorphous and nanocrystalline scales; and the preparation method comprises the following steps: firstly, fixing the coil on a template; stacking the amorphous and nanocrystalline scales; infiltrating the amorphous and nanocrystalline scales with a coating agent diluted by a diluent; and finally preparing the integrated electromagnetic induction coil with a magnet yoke structure through drying treatment. The prepared integrated electromagnetic induction coil has the characteristics of being high in inductance, high in quality factor, simple in integral molding process, low in cost and the like.

Description

technical field [0001] The invention belongs to the technical field related to wireless charging, and in particular relates to an integrated electromagnetic induction coil for wireless charging and a preparation method thereof. Background technique [0002] With the continuous advancement of science and technology, the development of electronic products is changing with each passing day. Among them, the "wireless" era of electronic products has come to us. Small electronic products include mobile phones and various wearable products, and large electronic products include electric vehicles. , various household appliances and other products, the wireless charging technology has been quietly changing people's way of life. In the wireless charging related technology, the magnetic conduction and isolation technology of the coil is the key technology to realize wireless charging. On the one hand, it can shrink the magnetic field lines and avoid the waste of magnetic energy. Impro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/24H01F27/30H01F41/00H01F41/02
CPCH01F27/24H01F27/306H01F41/00H01F41/02
Inventor 朱景森卢志超刘天成刘志坚王湘粤关连宝李德仁
Owner ADVANCED TECHNOLOGY & MATERIALS CO LTD
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