Preparation method of electromagnetic shielding piece used for wireless charging, and electromagnetic shielding piece

A technology of electromagnetic shielding and wireless charging, applied in the direction of magnetic/electric field shielding, electrical components, etc., can solve the problems of poor consistency of performance indicators, low charging efficiency, uncontrollable internal microstructure, etc., and achieve the effect of optimizing charging efficiency

Pending Publication Date: 2017-06-30
SHANGHAI LINEPRINTING MATERIALS CO LTD
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  • Abstract
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Problems solved by technology

[0010] Although the above-mentioned patents have mentioned the method of reducing magnetic loss, the process method has great disadvantage...

Method used

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  • Preparation method of electromagnetic shielding piece used for wireless charging, and electromagnetic shielding piece
  • Preparation method of electromagnetic shielding piece used for wireless charging, and electromagnetic shielding piece
  • Preparation method of electromagnetic shielding piece used for wireless charging, and electromagnetic shielding piece

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Embodiment Construction

[0036] The present invention will be described in detail below in conjunction with the accompanying drawings. The following examples do not limit the invention. Without departing from the spirit and scope of the inventive concept, changes and advantages that can be imagined by those skilled in the art are all included in the present invention.

[0037] Figure 5 It is a flow chart of the preparation method of the electromagnetic shielding sheet for wireless charging of the present invention. The following is based on Figure 5 The steps of the preparation method of the electromagnetic shielding sheet for wireless charging are introduced in detail.

[0038] Before preparing the electromagnetic wave shielding sheet, materials and related production equipment must be prepared. Materials include amorphous and nanocrystalline ribbons, and related production equipment includes: adhesive adhesives, such as single-sided adhesive tape, double-sided adhesive tape, printing tape, etc...

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Abstract

The invention provides a preparation method of an electromagnetic shielding piece used for wireless charging, and an electromagnetic shielding piece obtained through the above method. The preparation method comprises following steps: a winding step of winding amorphous and nanocrystalline ribbons in a predetermined size as required; a heat treatment step of putting the wound amorphous and nanocrystalline ribbons in a heat treatment furnace for heat treatment, and adding a transverse magnetic field, adding a longitudinal magnetic field or no adding magnetic fields during the heat treatment process; and a graphical processing step of carrying out graphical processing on uncoated surfaces of the amorphous and nanocrystalline ribbons. By employing the graphical processing technology such as laser cutting and chemical etching technologies and the like for graphical processing, electromagnetic performances (magnetic permeability, loss and the like) of the electromagnetic shielding piece are controllable, the charging efficiency is optimized, and the electromagnetic shielding effect of the electromagnetic shielding piece is maximized.

Description

technical field [0001] The invention relates to the fields of magnetic materials, wireless charging, electromagnetic shielding and heat treatment technology, in particular to an electromagnetic shielding sheet for wireless charging and an electromagnetic shielding sheet obtained by the method. Background technique [0002] With the emergence and application of high-tech products, the electromagnetic radiation pollution it produces is the fourth largest environmental pollution after water pollution, air pollution and noise pollution. [0003] With the rapid development of science and technology and the wide application of electronic equipment, people's work and life are increasingly dependent on electronic equipment. We are used to charging with data cables, and we are often annoyed by too many cables and not long enough. It has also been imagined that one day all electronic devices do not need power cords, and can use wireless charging technology to charge freely anytime, a...

Claims

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Application Information

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IPC IPC(8): H05K9/00
CPCH05K9/0081
Inventor 李家洪周坤荣杨恺苏临萍吴长和杨兆国姚文峰陈印中
Owner SHANGHAI LINEPRINTING MATERIALS CO LTD
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