High-magnetic shielding communication transformer and production method thereof

A manufacturing method and transformer technology, applied in the manufacture of inductors/transformers/magnets, parts of transformers/inductors, coils, etc., can solve the problems of existing technologies such as communication transformers, and achieve excellent performance of the comprehensive mechanism, not easy to age, The effect of high magnetic permeability

Inactive Publication Date: 2017-02-15
宁波华众和创工业设计有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Among the relevant patents that have been applied for in China, there is no prior art on communication transformers with high magnetic shielding

Method used

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  • High-magnetic shielding communication transformer and production method thereof

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Effect test

Embodiment 1

[0035] A high-magnetic shielding communication transformer, including frame, winding 4, magnetic core 3, shielding cover 1, packaging material; using aluminum nitride ceramic frame 2; winding 4 using carbon fiber wire with 1140 epoxy polyester insulating paint The shield 1 is made of aluminum alloy and is packaged in a fully enclosed structure; the gap between the shield 1 and other parts except the shield 1 is filled with a granular thermally conductive insulating material 5, which is made of silicon rubber and A granular mixture of glass fibers with a weight ratio of 9:1.

[0036] The manufacturing method of the above-mentioned high magnetic shielding communication transformer includes the following steps:

[0037] 1) Selection and preparation of various components

[0038] ① The skeleton is made of aluminum nitride-based ceramic skeleton 2 matched with the Japanese-shaped magnetic core 3. The selection standard of the aluminum nitride-based ceramic is: volume resistivity ≥2×10 13...

Embodiment 2

[0062] A manufacturing method of a high magnetic shielding communication transformer includes the following steps:

[0063] 1) Selection and preparation of various components

[0064] ① The skeleton is made of aluminum nitride-based ceramic skeleton 2 matched with the Japanese-shaped magnetic core 3. The selection standard of the aluminum nitride-based ceramic is: volume resistivity ≥2×10 13 Ω·cm, dielectric strength ≥750kV / cm, thermal conductivity ≥25W / m·K, bending strength ≥400Mpa, Young's modulus ≥320Gpa, fracture toughness ≥25Mpa;

[0065] ②The magnetic core 3 is made of molybdenum permalloy strip. The selection criteria for the molybdenum permalloy strip are as follows: its raw material contains 3.2%-3.8% molybdenum, 15.8%-17.2% iron, and 79%-81% nickel. Its inductance The stability value is not higher than 0.03%, and the initial inductance deviation range value is not higher than 0.3%;

[0066] ③The shield 1 is made of aluminum alloy and adopts a fully enclosed structure;

[0067...

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Abstract

The invention discloses a high-magnetic shielding communication transformer and a production method thereof. According to the high-magnetic shielding communication transformer, a long-time working temperature of not smaller than 150 degrees centigrade can be borne, and an electromagnetic shielding level is at least T-level. Through control of a repeated circular process of forming, fixing and impacting-destressing-deformation-correcting-destressing for a molybdenum permalloy magnetic core, the molybdenum permalloy magnetic core with high stability is obtained. Through adoption of an aluminium nitride-based ceramic framework with excellent electromagnetic performance and a full-enclosed aluminium alloy shielding case and through filling of a heat conductive insulating material in the aluminium alloy shielding case, the heat resistance and shielding performance of the communication transformer provided by the invention are improved. The high-magnetic shielding communication transformer provided by the invention is high temperature resistant and is good in electromagnetic shielding effect and long in service life.

Description

Technical field [0001] The invention relates to the field of electronic components, in particular to a high-magnetic shielded communication transformer and a manufacturing method thereof. Background technique [0002] Communication transformers are used to adjust the quality and status of communication circuits in telephone terminal circuits and trunk lines. Communication transformer products are widely used in cable modems, network cards, hubs, xDSL broadband communication equipment, switches, fiber optic transceivers, routers, embedded systems and VolP and other network communication equipment, data communication equipment, photoelectric transmission equipment, access network equipment, Power line internet equipment, voice equipment, etc. [0003] Among the related patents that have been applied for in China, there is no prior art related to high magnetic shielding communication transformers. Summary of the invention [0004] The invention aims to provide a high-magnetic-shielde...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F41/00H01F41/02H01F1/147H01F27/245H01F41/12
CPCH01F41/00H01F1/14716H01F27/245H01F41/005H01F41/0233H01F41/127
Inventor 何琳
Owner 宁波华众和创工业设计有限公司
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