Large current magnetic shielding inductor

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...

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

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