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Low-loss magnetic insulation sheet preparation process and magnetic insulation sheet

A preparation process and a technology of magnetic isolation sheets, which are applied in the fields of magnetic core/yoke, inductor/transformer/magnet manufacturing, electrical components, etc., can solve problems such as difficult drying of strips, poor performance consistency, and changes in adhesive layer performance. Achieve the effects of complete functions, low production cost, and small eddy current loss

Inactive Publication Date: 2018-09-28
SUNLINE PRINTING SHANGHAI ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above process is complicated and the process is long, and the tape of the adhesive layer passes through strong acid and alkali solution and etching solution, but the performance of the adhesive layer changes and the gap is not easy to dry. The strip is easy to oxidize.
The cost is high, and all of them are treated and heated by chemicals, the performance consistency is poor, and the charging efficiency is low

Method used

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  • Low-loss magnetic insulation sheet preparation process and magnetic insulation sheet
  • Low-loss magnetic insulation sheet preparation process and magnetic insulation sheet
  • Low-loss magnetic insulation sheet preparation process and magnetic insulation sheet

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Embodiment Construction

[0023] This specific embodiment adopts the following technical solutions: a low-loss magnetic isolation sheet preparation process, including the following process flow: A, raw material processing: the soft magnetic tape material is cut into a set width, and then the surface of the soft magnetic tape material is treated , and wound to the specified inner and outer diameters according to the process requirements; B. heat treatment: place the wound soft magnetic tape in a heat treatment furnace with or without a magnetic field for heat treatment; C. lamination: through roll lamination Paste the double-sided adhesive on one side of the heat-treated soft magnetic material in the same way, and the other side is exposed to form a single layer; D. Surface patterning treatment: through the single layer formed above or the soft magnetic material stacked from the above single layer into multiple layers Graphical processing of magnetic materials; E. Molding: forming low-loss magnetic isola...

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Abstract

The invention discloses a low-loss magnetic insulation sheet preparation process and a magnetic insulation sheet. The low-loss magnetic insulation sheet preparation process disclosed by the inventionis reasonable and simple in structure, low in production cost and complete in function. The gaps with uniform and orderly shapes and a certain size are formed by contacting a graphic tube and the strip material through the surface treatment process, the powder surface insulation and surface phosphating process and surface oxidation method, so that the electromagnetic property magnetic conductivityof the magnetic insulation sheet is relatively average, the magnetic loss is small, the quality factor is high, the shapes are really uniform in size, the gap sizes are good in consistency, the colloid fallibility is excellent, the surface impedance is increased, and the eddy current loss is small; the eddy current loss is further reduced after adding the strip material surface treatment, so thatthe discharging efficiency is improved, the magnetic insulation sheet is good in stability, and the automation is easy to realize.

Description

technical field [0001] The invention relates to the technical field of wireless charging, in particular to a preparation process of a low-loss magnetic isolation sheet and the magnetic isolation sheet. Background technique [0002] 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 internal metal plate of the rechargeable battery is affected by the magnetic field , the eddy current loss generated will cause the battery to heat up, causing an explosion or fire unsafe, and the magnetic field will interfere with the surrounding devices and affect the normal operation of the entire charger. Therefore, at the technical level, shielding materials or wave-absorbing materials must be used to block the leakage ...

Claims

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Application Information

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IPC IPC(8): H01F41/02H01F3/04H02J50/70
Inventor 郭庆文徐可心林涛吴长和王劲胡会新马飞师海涛钱江华
Owner SUNLINE PRINTING SHANGHAI ELECTRONICS CO LTD
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