Coil with shielding function and magnetic element

A technology of magnetic components and coils, applied in coil manufacturing, preventing/reducing unwanted electrical/magnetic effects, transformer/inductor coils/windings/connections, etc. The problem of limited shielding effect, etc., can improve the utilization rate of the window, reduce the volume, and reduce the electromagnetic interference.

Active Publication Date: 2014-04-16
DELTA ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although this method can reduce the electromagnetic interference problem produced by the transformer 1 to a certain extent, the disadvantage is that the metal sheet 13 cannot effectively isolate the primary coil 14 of the transformer 1 from the secondary coil 12, thereby reducing the electromagnetic interference. Shielding effect is limited

Method used

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  • Coil with shielding function and magnetic element
  • Coil with shielding function and magnetic element
  • Coil with shielding function and magnetic element

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Embodiment Construction

[0038] Some typical embodiments embodying the features and advantages of the present invention will be described in detail in the description in the following paragraphs. It should be understood that the present invention is capable of various changes in different ways without departing from the scope of the present invention, and that the description and drawings therein are illustrative in nature rather than limiting the present invention.

[0039] Figure 2A It is a structural schematic diagram of a coil with shielding function in a preferred embodiment of the present invention, and Figure 2B for Figure 2A The schematic diagram of the structure shown in the BB section. Such as Figure 2A and Figure 2B As shown, the coil 2 with shielding function of the present invention includes at least one insulated wire 21 and an electromagnetic interference shielding layer 22 . Wherein, the insulated wire 21 is wound to form a winding part 23, and has a first outlet section 21a ...

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PUM

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Abstract

The invention discloses a coil with a shielding function and a magnetic element. The coil with a shielding function comprises at least one insulated lead and an electromagnetic interference shielding layer, wherein the insulated lead is wound to form a winding part and is provided with a first coil outlet section and a second coil outlet section; the winding part is provided with a through hole; and the electromagnetic interference shielding layer is formed on the winding part so as to cover the insulated lead and is provided with a projection on the lateral surface of the winding part as well as a radial clearance to enable the electromagnetic interference shielding layer to be a non-conductive loop, therefore, the coil has the electromagnetic interference shielding function. The coil with the shielding function can effectively reduce the electromagnetic interference of the magnetic element, improve the utilization rate of a window of a magnetic core and also reduce the volume of the magnetic element.

Description

technical field [0001] The invention relates to a coil and a magnetic element, in particular to a coil and a magnetic element with a shielding function. Background technique [0002] In switching power systems, magnetic components such as transformers and inductors are very important. The manufacture of this type of magnetic element can directly wind insulated wires, such as single-layer insulated wires or triple-layer insulated wires, on the magnetic core (magnetic core), or first wind the insulated wires into a wire cake shape or wrap The insulated wire is wound on the winding area of ​​the bobbin, and then assembled with the magnetic core. Due to the use of switching elements in the switching power supply system, electromagnetic interference (EMI) problems will occur. Electromagnetic interference will interfere through conduction and radiation, and even damage other electronic components or electronic equipment. Magnetic components, especially transformers, are one of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F27/28H01F27/36H01F41/04
Inventor 曾剑鸿洪守玉叶楠杨威应建平
Owner DELTA ELECTRONICS INC
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