A magnetic conductive sheet for wireless char and a preparation method thereof

A technology of wireless charging and magnetic conductive sheet, which is applied in the field of magnetic conductive sheet, can solve the problems such as difficulty in reducing the thickness, and achieve the effects of controllable thickness, good uniformity and performance stability

Pending Publication Date: 2018-12-11
SHANGHAI LINEPRINTING MATERIALS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to achieve higher charging efficiency of traditional magnetic materials, it is necessary to increase the thickness of magnetic materials to meet the efficiency requirements, so the thickness is difficult to reduce

Method used

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  • A magnetic conductive sheet for wireless char and a preparation method thereof
  • A magnetic conductive sheet for wireless char and a preparation method thereof
  • A magnetic conductive sheet for wireless char and a preparation method thereof

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Embodiment Construction

[0032] The magnetic conductive sheet for wireless charging of the present invention is such as figure 1 As shown, it mainly includes several layers of permalloy layer 1 stacked on top of each other and patterned with magnetic sheets. The permalloy layer is bonded by the coating layer 2 provided on the upper and lower sides of the permalloy layer 1 and passes through the layer. Pressed.

[0033] As an embodiment, the permalloy layer is made of an ultra-thin permalloy strip with a thickness of 5-15 μm.

[0034] Please combine image 3 As shown, the method for preparing the magnetic conductive sheet for wireless charging specifically includes the following steps:

[0035] 1) Material preparation stage: prepare ultra-thin permalloy strips with a thickness of 5-15μm and prepare adhesive glue; in addition, relevant production equipment, such as heat treatment equipment, test analysis equipment, and graphical processing equipment, are also required.

[0036] 2) Heat treatment: After the perm...

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Abstract

The invention discloses a magnetic conductive sheet for wireless charging, comprising a plurality of permalloy layers patterned by magnetic sheets stacked on top and bottom, wherein the plurality of permalloy layers are bonded by printing adhesive layers arranged on both sides of the permalloy layers and laminated. The permalloy layers are arranged on the top and bottom sides of the permalloy layers. The invention also discloses a preparation method of a magnetic conductive sheet for wireless charging. The invention applies permalloy, an ultra-thin magnetic material, to the wireless charging field, on the premise of ensuring high charging efficiency, reduces the thickness of the magnetic sheet and further reduces the thickness of the whole module, so as to meet the overall requirements ofultra-thinning and broadening of the magnetic material for the electronic material application.

Description

Technical field [0001] The invention belongs to a magnetic conductive sheet, and specifically relates to a magnetic conductive sheet for wireless charging and a preparation method thereof. Background technique [0002] Wireless charging technology, also known as inductive charging and non-contact charging, is a new type of charging technology derived from wireless power transmission technology. The wireless charging technology uses near-field induction to transfer energy from the wireless charger to the device to be charged. Under normal circumstances, the energy transmitted by the capacitor is very small, which has a great relationship with the small electrode area. Therefore, in order to meet the power level required to charge the consumer device (for example, from 5W to 25W), the electrode size and the coupling voltage value need to be increased, depending on the actual configuration. In order to achieve wireless transmission and reception between coupling electrodes and min...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F38/14H01F27/245H01F41/02
CPCH01F27/245H01F38/14H01F41/024H01F2038/143
Inventor 李佳洪
Owner SHANGHAI LINEPRINTING MATERIALS CO LTD
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