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Preparation method of nanocrystalline magnetic sheet for wireless charging

A technology of wireless charging and nanocrystals, applied in chemical instruments and methods, applications, electronic equipment, etc., to achieve the effects of improving crack uniformity, high yield rate, and improving production efficiency

Active Publication Date: 2018-12-28
HENGDIAN GRP DMEGC MAGNETICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the above technical problems, the present invention provides a method for preparing nanocrystalline magnetic sheets for wireless charging. The present invention adopts the process of laminating first and then splitting, which can not only effectively improve production efficiency, but also is not easy to produce wrinkles, centipedes, etc. during the splitting process. There are no problems such as streaks and deviation, and the stability of the split performance is good

Method used

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  • Preparation method of nanocrystalline magnetic sheet for wireless charging
  • Preparation method of nanocrystalline magnetic sheet for wireless charging
  • Preparation method of nanocrystalline magnetic sheet for wireless charging

Examples

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preparation example Construction

[0078] A method of preparing a wireless charging nano -crystal magnetic film, including the following steps:

[0079] 1) Wind scroll: Wrap the nano -crystal band into the required length or weight.

[0080] 2) Antuction: Anecrete treatment of nano-crystal band materials that are rolled out: The annealing temperature is 500-600 ° C, and the time is 8-15H.

[0081] 3) Single -layer fit: Put double -sided glue on the dark surface of some nano -crystal belt materials, and attach silicone weak mucosa on the dark surface of the remaining nano -crystal bands to ensure that the nanocrystalline band material is not biased during the fit process , Non -broken, drums produced by residual bubbles.

[0082] 4) Multi -layer fit: Select a nanocrystal belt with double -sided glue, attach silicone weak mucosa on its bright surface, stripped off the protective film on its double -sided glue, and use the nanocrystalline band material as the base -based base. Noodles, another nano-crystal belt ...

Embodiment 1

[0091] 1) Winding: After preparing the nanocrystalline strip and related equipment, place one end of the nanocrystalline strip on the winding device, set the tension and speed to control the tightness, wind to the specified length, and fix the joint by electric welding.

[0092] 2) Annealing: annealing is performed on the coiled nanocrystalline strip: the annealing temperature is 550° C., and the time is 8-15 hours.

[0093] 3) Single-layer bonding: attach double-sided adhesive tape to the dark surface of some nanocrystalline strips, and attach weak silica gel film to the dark surface of the rest of the nanocrystalline strips to ensure that the nanocrystalline strips are not misaligned during the lamination process , No breakage, no bulging due to residual air bubbles.

[0094] 4) Multi -layer fit: Select a nanocrystal belt with double -sided glue, attach silicone weak mucosa on its bright surface, stripped off the protective film on its double -sided glue, and use the nanocry...

Embodiment 2

[0103] 1) Winding: After preparing the nano -crystal band material and related equipment, place one end of the nano -crystal belt on the rolling device, set the tension and speed to control the loosening, and wrap the welding fixed joint.

[0104] 2) Antuction: Anecrete treatment of nano-crystal band materials that are rolled out: annealing temperature is 550 ° C, and the time is 8-15h.

[0105] 3) Single -layer fit: Put double -sided glue on the dark surface of some nano -crystal belt materials, and attach silicone weak mucosa on the dark surface of the remaining nano -crystal bands to ensure that the nanocrystalline band material is not biased during the fit process , Non -broken, drums produced by residual bubbles.

[0106] 4) Multi -layer fit: Select a nanocrystal belt with double -sided glue, attach silicone weak mucosa on its bright surface, stripped off the protective film on its double -sided glue, and use the nanocrystalline band material as the base -based base. Noo...

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Abstract

The invention relates to the technical field of magnetic materials, and discloses a preparation method of a nanocrystalline magnetic sheet for wireless charging. The method comprises the steps of 1, coiling; 2, annealing; 3, single-layer laminating; 4, multi-layer laminating; 5, roll cutting; 6, splintering; 7, cutting, wherein silica gel weak mucosa on a nanocrystalline strip is stripped and cutinto nanocrystalline articles; 8, coating, wherein colloid mixed with nanoscale solid insulation powder is coated on the nanocrystalline articles and subjected to vacuum plastic packaging through a vacuum bag; 9, isostatic pressing, wherein plastic-packaged nanocrystalline articles are laminated through warm water isostatic pressing, and the nanoscale solid insulation powder enters cracks of the nanocrystalline articles; 10, laminating; 11, die cutting. Accordingly, the technology of conducting laminating first and then conducting splintering is adopted, the production efficiency can be effectively improved, in the splintering process, the problems of corrugation, centipede grains, off tracking and the like cannot occur easily, and the splintering performance stability is good. In addition, laminating is conducted before splintering, a magnetic sheet is not likely to be shredded, and the yield is higher.

Description

technical field [0001] The invention relates to the technical field of magnetic materials, in particular to a method for preparing a nanocrystalline magnetic sheet for wireless charging. Background technique [0002] Almost all electronic devices nowadays, such as mobile phones, MP3 and notebook computers, etc., are mainly charged by wired power transmission, that is, one end is connected to an AC power source, and the other end is connected to a rechargeable battery of a portable electronic device. This method has many disadvantages. First of all, frequent plugging and unplugging can easily damage the motherboard interface. In addition, careless operation may also cause the risk of electric shock. [0003] Wireless charging uses a new type of energy transmission technology - wireless power supply technology. This technology frees the charger from the limitation of the line, and realizes the complete separation of the electrical appliance and the power supply. It shows bet...

Claims

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Application Information

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IPC IPC(8): B32B33/00B32B37/14B32B38/00
CPCB32B33/00B32B37/14B32B38/00B32B2457/00
Inventor 朱权顾小建关旺毛石武赵俊
Owner HENGDIAN GRP DMEGC MAGNETICS CO LTD
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