Composite application shield sheet of coil module and preparation process thereof

A composite application and preparation process technology, applied in antenna coupling, antenna, antenna components and other directions, can solve the problems of poor performance consistency, low charging efficiency, pollution of the environment, etc., to achieve uniform size, improved charging efficiency, and high quality factor. Effect

Inactive Publication Date: 2018-11-30
SHANGHAI LINEPRINTING MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these processes still have problems such as polluting the environment, which is not conducive to environmental protection, poor performance consistency, and low charging efficiency.

Method used

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  • Composite application shield sheet of coil module and preparation process thereof
  • Composite application shield sheet of coil module and preparation process thereof
  • Composite application shield sheet of coil module and preparation process thereof

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Embodiment Construction

[0038] The technical solution of the present invention is clearly and completely described below, obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0039] A preparation process of a shielding sheet for composite application of a coil module is introduced in detail.

[0040] Step 1: After the soft magnetic material and related production equipment are prepared, the soft magnetic material is slit and wound, the soft magnetic material strip is slit to set the width, and then the inner and outer diameters are wound according to the process requirements.

[0041] Step 2, heat treatment. The slitting and winding soft magnetic material strips are placed in a heat treatment furnace with or without a magnetic fiel...

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Abstract

The invention relates to a composite application shield sheet of a coil module and a preparation process thereof. The preparation process comprises, at least, the following process steps of heat treatment, composite lamination and soft magnetic material surface graphical processing. magnetic sheets formed by a resin bonding agent and a magnetic powder mixture are attached to the back of a first magnetic conductive layer formed by soft magnetic material strip laminations undergoing graphical processing or upper-single-layer graphical processing to form a second magnetic conductive layer; then cooling fins are attached to finally form the shield sheet, and finally the coil module is formed through shaped attachment. The process is simple and feasible, the integrated automation degree is high, the made shield sheet is small in thickness, good in shield capability, high in charging efficiency, small in temperature rise and more suitable for NFC composite functional module coils, the magnetic parameters of the materials are controllable, the surface processing shape of the shield sheet is uniform, the product stability is improved, and the processes and material costs are greatly saved.

Description

technical field [0001] The invention relates to the field of coil modules, in particular to a shielding sheet for composite application of coil modules. Background technique [0002] Wireless charging technology, the English name is Wireless charging technology, also known as inductive charging, non-contact charging, is a new charging technology derived from wireless power transmission technology. Wireless charging technology uses near-field induction, and the wireless charger transmits energy to the device that needs to be charged. The device uses the received energy to charge the battery and provide energy for the operation of the device itself. During the wireless charging process, an alternating electromagnetic field will be generated, and when the alternating electromagnetic field encounters metal, an electronic eddy current will be generated, which will generate heat energy on the metal, resulting in low transmission efficiency and waste of electric energy. If the inte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/36H01F27/22H01F38/14H01F41/02H01Q1/52H01Q1/00H02J50/70
CPCH01F27/22H01F27/36H01F38/14H01F41/02H01Q1/02H01Q1/526H02J50/70
Inventor 郭庆文徐可心林涛吴长和王劲胡会新马飞师海涛霍云芳钱江华
Owner SHANGHAI LINEPRINTING MATERIALS CO LTD
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