Preparation technology of magnetic conductive plate used for wireless charging

A preparation process and wireless charging technology, applied in the direction of inductance/transformer/magnet manufacturing, circuits, inductors, etc., to achieve the effects of enhancing magnetic permeability and resistivity, reducing the loss of magnetic conductive sheets, and improving charging efficiency

Inactive Publication Date: 2018-01-19
SHANGHAI LINEPRINTING MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the mobile phone wireless charging receiving end, if there is no electromagnetic shielding sheet, the wireless charging device cannot complete the short-distance charging work. In order to obtain higher charging efficiency, reduce costs, reduce or eliminate the influence of the electromagnetic field on the mobile phone during charging, it is necessary to use Electromagnetic shielding sheet for shielding, but also encountered many technical difficulties, now need to develop a magnetic conductive sheet and preparation process that can improve wireless charging, take advantage of the performance advantages of soft magnetic materials, and further improve charging efficiency

Method used

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  • Preparation technology of magnetic conductive plate used for wireless charging
  • Preparation technology of magnetic conductive plate used for wireless charging
  • Preparation technology of magnetic conductive plate used for wireless charging

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Embodiment

[0024] Such as Figure 1a It is a picture of the strip surface treatment after the preparation process of the magnetic conductive sheet for wireless charging. Figure 1b It is a picture of the surface of the strip without surface treatment in the preparation process of the magnetic conductive sheet for wireless charging. It can be seen that the surface structure of the strip after treatment is patterned into a fine structure with glue, and the conductive The magnetic sheet is a laminated sheet of single-layer or multi-layer metal soft magnetic alloy strips. The magnetic-conductive sheet has good electromagnetic shielding performance. Its preparation process flow chart is as follows: figure 2 Shown:

[0025] 1. The preparatory stage of preparing the magnetic sheet:

[0026] Metal soft magnetic alloy strips: including iron-based amorphous, iron-nickel-based amorphous, cobalt-based amorphous, nanocrystalline strips, permalloy strips, silicon steel strips, pure iron thin strips...

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Abstract

The invention discloses a preparation technology of a magnetic conductive plate used for wireless charging, and relates to the field of magnetic materials. According to the preparation technology of the magnetic conductive plate used for wireless charging, a series of treatment process such as winding, heat treatment, single-sided coating, graphical treatment, insulating treatment, secondary coating, gluing, lamination and punching is carried out on a metal magnetically soft alloy strip to obtain the magnetic conductive plate with more excellent performance, the magnetic conductive plate is combined with a coil for carrying out efficiency testing, so that the charging efficiency and specific resistance level are further improved, and the loss of the magnetic conductive plate is further reduced.

Description

technical field [0001] The invention relates to the field of magnetic materials, in particular to a preparation process of a magnetically conductive sheet for wireless charging. Background technique [0002] With the rapid popularization of mobile phones, the uplink and downlink data rates supported by wireless networks continue to increase, and new applications, especially data service applications, continue to emerge. Mobile phones have become an indispensable information terminal around people. NFC (Near Field Communication) technology will make all this a reality. This technology was proposed by Nokia, Philips and Sony in 2004. Currently, there are 11 sponsoring members such as Samsung, Microsoft, and Visa. The total number of class members has exceeded 100, gathering the world's leading operators, mobile phone manufacturers, chip manufacturers, smart card manufacturers, banks and credit card organizations. [0003] The low cost, high security and fast response time of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F38/14H01F27/245H01F41/02H02J50/10
Inventor 康来利
Owner SHANGHAI LINEPRINTING MATERIALS CO LTD
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