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Plastic package coil mould pressing inductor and production process thereof

A plastic-encapsulated coil and production process technology, which is applied in the manufacture of inductors/transformers/magnets, transformers/inductor coils/windings/connections, circuits, etc., can solve problems such as damage to the outer protective layer of the enameled wire, and low and high density of the magnet body. , to achieve the effect of weakening restraint, high molding pressure and sintering temperature, and improving electromagnetic properties

Pending Publication Date: 2021-08-31
DONGGUAN MENTECH OPTICAL & MAGNETIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] If the compression molding pressure is too high, the outer protective layer of the enameled wire will be damaged. Therefore, the compression molding pressure is generally small, which will cause the density of the magnet body to be small, which is not conducive to improving the magnetic permeability of the coil inductance;
[0010] If the baking temperature is too high, the outer protective layer of the enameled wire will be damaged. Therefore, the baking temperature is generally small, and the high-temperature sintering process cannot be used, which will limit the selection range of magnetic powder materials, which is not conducive to increasing the upper voltage limit of the coil inductance. For example, the upper voltage limit of the current coil inductance is generally lower than 100V
[0011] In summary, since the coil is directly in contact with the magnetic powder material, the performance of the outer protective layer of the coil itself has greatly restricted the compression molding process of the magnetic powder material, which is not conducive to the further improvement of the electromagnetic properties (electrical and magnetic properties) of the current coil inductance.

Method used

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  • Plastic package coil mould pressing inductor and production process thereof
  • Plastic package coil mould pressing inductor and production process thereof
  • Plastic package coil mould pressing inductor and production process thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0049] This embodiment provides a molded coil inductor with plastic packaging, which can effectively reduce the limitation caused by the physical properties of the conductor itself on the compression molding process of the magnetic powder material, thereby improving the electromagnetic performance of the molded inductor with plastic packaging coils.

[0050] Specifically, see figure 1 The molded coil inductor includes a conductor 1 for generating an induced current, a plastic layer 2 covering the conductor 1, a magnet body 3 covering the plastic layer 2, and a magnet body 3 covering the body. Protective insulating protective layer 4.

[0051] It should be noted that the conductor 1 is mainly used to generate an induced current under the action of the magnetic field generated by the main part of the magnet 3 after electrification, and its specific structure can be a straight wire, a copper sheet, or a wire wound by an enameled wire. Stereo coils or planar coils are not limited...

Embodiment 2

[0061] This embodiment provides a process for producing a plastic-encapsulated coil molded inductor, which is used for producing the plastic-encapsulated coil molded inductor provided in the first embodiment, and has corresponding functions and beneficial effects.

[0062] see Figure 4 , the production process of the plastic-encapsulated coil molded inductor includes the following steps:

[0063] S10 : forming a plastic encapsulation layer 2 on the outside of the conductor 1 by an in-mold injection process.

[0064] It should be noted that when the conductor 1 is a coil, S10 includes:

[0065] S101: winding the enameled wire to form a coil with a plane structure or a three-dimensional structure;

[0066] S102: Weld the pole piece 5 used for electricity connection at the wire head of the coil;

[0067] S103: Put the coil into the injection mold cavity;

[0068] The pole piece 5 can be completely outside the injection mold cavity, and only the coil is plastic-sealed; the pa...

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PUM

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Abstract

The invention relates to the technical field of electronic components, and particularly discloses a plastic package coil mould pressing inductor and a production process thereof. The plastic package coil mould pressing inductor comprises an electric conductor used for generating induction current, a plastic package layer wrapping the electric conductor, and a magnet body wrapping the plastic package layer. According to the plastic package coil mould pressing inductor and the production process thereof, the limitation of the physical performance of the electric conductor on the magnetic powder material compression molding process can be weakened, and the electromagnetic performance of the plastic package coil mould pressing inductor can be improved.

Description

technical field [0001] The invention relates to the technical field of electronic components, in particular to a plastic coil molded inductor and a production process thereof. Background technique [0002] At present, the high-current inductors on the market mainly include integrally formed coil inductors and copper sheet inductors with assembled structures. Specifically, the coil inductance production process is as follows: [0003] ① Wind the enameled wire into a coil; [0004] ② Place the coil in the cavity; [0005] ③Inject magnetic powder material into the mold cavity; [0006] ④Pressure compression molding; [0007] ⑤ After low-temperature baking and solidification, the magnetic powder material forms the main part of the magnet covering the coil (the wire ends of the coil are exposed for wiring). [0008] During the above production process: [0009] If the compression molding pressure is too high, the outer protective layer of the enameled wire will be damaged. ...

Claims

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Application Information

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IPC IPC(8): H01F27/28H01F27/30H01F41/02
CPCH01F27/28H01F27/30H01F41/02
Inventor 黄家毅唐建伟陈榕寅陈熹余红雅韩光泽
Owner DONGGUAN MENTECH OPTICAL & MAGNETIC
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