Method for increasing air gap magnetic core inductance coefficient

A technology of inductance coefficient and air-gap magnetism, which is applied in the direction of transformer/inductor core, inductor/transformer/magnet manufacturing, circuits, etc., can solve problems such as winding difficulties, achieve simple winding, increase inductance coefficient, and improve efficiency Effect

Active Publication Date: 2013-04-24
MORNSUN GUANGZHOU SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0022] 1) The disadvantage of the magnetic ring with closed magnetic flux is that it is difficult to wind;

Method used

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  • Method for increasing air gap magnetic core inductance coefficient
  • Method for increasing air gap magnetic core inductance coefficient
  • Method for increasing air gap magnetic core inductance coefficient

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Figure 4 It is a schematic diagram of the magnetic core of the first embodiment. The relatively common ER7.5 magnetic core is used. The magnetic material comes from P4 of Yuefeng Electronic Materials Co., Ltd. The appearance is as follows Figure 4 As shown, the six faces indicated by 22 are mirror faces.

[0050] Fasten the wound coil Figure 4 In front of the magnetic core, drop an appropriate amount of ferrofluid on the three mirror surfaces of a magnetic core respectively. The type of ferrofluid is Jinke's LD2020, and its saturation magnetic flux density is about 200 gauss.

[0051] At the same time, the self-made magnetic fluid is used, and the magnetic material with high magnetic permeability is used. After sintering, it is ground into powder, and the magnetic powder below 500 mesh is screened out, mixed into the magnetic liquid LD2003 for speakers with good fluidity, and the amount of mixing is controlled. , so that the saturation magnetic flux density of the ...

Embodiment 2

[0059] Figure 5 It is a schematic diagram of the magnetic core of the second embodiment. For the convenience of comparison, it is composed of a common ER7.5 magnetic core and an I-type magnetic core. The magnetic material comes from P47 of Yuefeng Electronic Materials Co., Ltd. The appearance is as follows Figure 5 As shown, the 4 faces indicated by 22 are mirror faces.

[0060] Fasten the wound coil Figure 5 In front of the magnetic core, drop an appropriate amount of ferrofluid on the three mirror surfaces of a magnetic core respectively. The type of ferrofluid is Jinke's LD2020, and its saturation magnetic flux density is about 200 gauss.

[0061] At the same time, the self-made magnetic fluid is used, and the magnetic material with high magnetic permeability is used. After sintering, it is ground into powder, and the magnetic powder below 500 mesh is screened out, mixed into the magnetic liquid LD2003 for speakers with good fluidity, and the amount of mixing is control...

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Abstract

The invention discloses a method for increasing air gap magnetic core inductance coefficient. The method includes: forming a magnetic core by combining more than two magnetic core bodies, adopting the mirror surface process for a joint surface passed by magnetic flux, filling a proper quantity of magnetic liquid on mirror surfaces after a coil is wound, and assembling the coil and the magnetic core together, so that the integral magnetic core inductance coefficient can be above 80%. A transformer or an inductor made of the magnetic core using the method is small in size and is simple in winding process.

Description

Technical field [0001] The invention involves magnetic cores and especially involves the method of increasing the inductance coefficient of the air gap. Background technique [0002] Magnetic core: magnetic core refers to a sintering magnetic metal oxide composed of various iron oxide mixtures.The magnetic core has a wide range of purposes. Since the 1980s, the computer power supply has fully realized the power supply of the switch.Communication, electronic detection equipment power supply, and control equipment power supply have all been widely used in switching power supply. Among household electrical appliances, such as color TVs, routers, mobile phone charging, etc., the power supply power supply is used.Rapid development. [0003] Among so many switching power supply, the requirements for magnetic cores are also different, like a common anti-back, you need to open a relatively large air gap to store energy to the magnetic core, while adjustingThe amount of inductance meets t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/24H01F41/02
Inventor 王保均
Owner MORNSUN GUANGZHOU SCI & TECH
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