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A kind of flexible magnetic conduction sheet for non-contact charging and preparation method thereof

A non-contact, sheet technology, applied in the direction of inductance/transformer/magnet manufacturing, circuits, electrical components, etc., can solve the problems of unfavorable development of thin portable electronic terminals and affect the development of miniaturization of wearable electronic terminals, etc., to achieve continuous High production efficiency, improved charging efficiency, and low loss effects

Active Publication Date: 2017-07-28
ADVANCED TECHNOLOGY & MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of ferrite materials is undoubtedly not conducive to the development of thin portable electronic terminals, and also affects the miniaturization of wearable electronic terminals.

Method used

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  • A kind of flexible magnetic conduction sheet for non-contact charging and preparation method thereof
  • A kind of flexible magnetic conduction sheet for non-contact charging and preparation method thereof
  • A kind of flexible magnetic conduction sheet for non-contact charging and preparation method thereof

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preparation example Construction

[0059] The preparation method for the single-layer magnetically conductive sheet includes: heat treatment, carrier film coating, longitudinal roll shearing, transverse roll shearing or transverse rolling, and protective film coating process; in the heat treatment process, the amorphous or nanocrystalline ribbon is Heat treatment in the range of 380-650°C (such as 390°C, 420°C, 450°C, 480°C, 500°C, 520°C, 550°C, 580°C, 600°C, 620°C, 645°C); In the process, the outer surface (upper and / or lower surface) of the single-layer amorphous or nanocrystalline ribbon after heat treatment is covered with a carrier film, and the thin film as the carrier is used to protect the fragile ribbon and prevent subsequent breakage The strip falls off during the process; in the longitudinal roller shearing process, the longitudinal roller shear is carried out on the strip covered with the carrier film, that is, it is cut along the length direction of the strip and broken, so that the strip The mater...

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Abstract

The invention discloses a non-contact type flexible magnetic conductive slice for charging and a preparation method therefor. The flexible magnetic conductive slice comprises at least one layer of non-crystal or nanocrystal soft magnetic alloy slices, double-sided adhesive tapes arranged between the soft magnetic alloy slice layers, and a protecting film arranged on the double-sided adhesive tape at the uppermost layer or the lowest layer, wherein each soft magnetic alloy slice layer is formed by fragments distributed with a latticed shape; the fragments are uniform in dimensions and are separated mutually; the preparation method comprises the main processes of performing thermal processing on strips, coating the protective film, performing longitudinal roll shearing, performing transverse roll shearing or transverse roll pressing, coating film and the like, and crushing the strips into the latticed fragment-structured magnetic conductive slice. Through the latticed fragments with controllable dimensions, the loss of the charging efficiency and the heating phenomenon caused by eddy current loss can be reduced; and therefore, the method is an efficient and continuous method for preparing the non-contact type flexible magnetic conductive slice for charging.

Description

technical field [0001] The invention relates to a flexible magnetic conductive thin sheet for electromagnetic induction at the transmitting end and the receiving end in the field of wireless charging, and a preparation method, especially for devices such as portable terminals. When charging in a non-contact inductive charging mode, the coupling efficiency of the charging coil is improved, and the emission is prevented. The electromagnetic field interference of the terminal and the receiving end to other circuits provides a magnetic path for the alternating magnetic field of the transmitting and receiving coils, ensuring that most of the magnetic force lines are closed and improving charging efficiency. Background technique [0002] Wireless charging technology, also known as non-contact inductive charging, refers to charging using the principle of electromagnetic wave induction or magnetic resonance. Wireless charging is realized by arranging coils on both sides of the power...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F3/02H01F41/02
CPCH01F3/02H01F41/0226H01F41/0233
Inventor 刘志坚王湘粤卢志超刘天成朱景森关连宝李德仁
Owner ADVANCED TECHNOLOGY & MATERIALS CO LTD
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