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Large current magnetic shielding inductor

A magnetic shielding and inductor technology, which is applied in the direction of inductors with magnetic cores, transformer/inductor coils/windings/connections, preventing/reducing unwanted electric/magnetic effects, etc. Low magnetic permeability of magnetic materials, obvious interference and other problems, to achieve good noise suppression effect, good magnetic shielding effect, and improve the effect of inductance parameters

Inactive Publication Date: 2012-01-04
江苏泰昌电子有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because this kind of inductor adopts an open magnetic circuit structure, and the magnetic permeability of the magnetic material itself is low, the inductance is generally relatively small, and the application occasions are limited.
Moreover, due to the open magnetic circuit structure, in the state of high current, the magnetic leakage is large, and the interference to other components is obvious
There is another kind of inductor. In order to improve the electromagnetic interference problem, it is combined with an I-shaped magnetic core and a shielding cover. This structure reduces the magnetic leakage of the components. The superposition performance of the inductor is relatively poor, and it cannot be made into tens or several Ten amp current resistant inductor

Method used

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Embodiment Construction

[0008] The present invention will be further described below in conjunction with the accompanying drawings.

[0009] Such as figure 1 As shown, the high-current magnetically shielded inductor includes a magnetically conductive inner core 1, and a coil 2 formed by enamelled round copper wire or enameled flat copper wire is wound on the outside, and the outer potting of the coil 2 is made of a mixed The magnetic shielding layer 3 is made of epoxy resin of magnetically permeable material.

[0010] This high-current magnetically shielded inductor carries a large current, and can carry a current of up to 31A when the inductance is 10UH.

[0011] The above is only a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications are also possible. Should be regarded as the ...

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Abstract

The invention discloses a large current magnetic shielding inductor. The large current magnetic shielding inductor comprises a magnetism conductive inner core, wherein a coil is wound outside the magnetism conductive inner core; and a magnetic shielding layer is encapsulated outside the coil. In the large current magnetic shielding inductor, the magnetism conductive inner core is made of a magnetic material with high magnetic flux density and high magnetic permeability, the coil is combined into the magnetism conductive inner core, and the magnetic shielding layer is encapsulated outside the coil, so that the inductance parameters of products are improved, and the favorable magnetic shielding layer is formed outside; therefore, the products can bear larger current and have a good magnetic shielding effect, high insulation performance and a good noise suppression effect.

Description

technical field [0001] The present invention relates to high current magnetically shielded inductors. Background technique [0002] High-current inductors carry a large current. According to the difference in inductance, the carrying current generally ranges from 10 to 80A. They are mainly used in high-current conversion and application fields such as automobiles, industrial power supplies, communication power supplies, and motor control systems; general inductors The device adopts nickel-zinc magnetic rod or iron powder magnetic rod as the magnetic material, and is made into a rod-shaped inductor. Because this kind of inductor adopts an open magnetic circuit structure, and the magnetic permeability of the magnetic material itself is low, the inductance is generally relatively small, and the application occasions are limited. Moreover, due to the open magnetic circuit structure, in the state of high current, the magnetic leakage is large, and the interference to other comp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F17/04H01F27/36H01F27/28
Inventor 朱锦良
Owner 江苏泰昌电子有限公司
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