Inductor

Abstract

The utility model discloses an inductor which comprises a coil, electrodes, a magnetic core and a shell, the magnetic core is arranged inside the shell, the coil is wound on the magnetic core, two ends of the coil are connected with the electrodes, and the electrodes extend to the outside of the shell. The coil is wound on the magnetic core, and the magnetic core and the shell form a dual conductive structure, so that the eddy current loss is reduced; high-frequency noise is reflected through the electromagnetic shielding layer, electromagnetic interference suppression is achieved, and the heat conduction performance is improved.

Description

Technical Field

[0001] This utility model belongs to the field of inductor technology, and specifically relates to an inductor. Background Technology

[0002] In modern electronic information systems, inductors, as the core basic components for realizing electromagnetic energy storage and conversion, are widely used in power electronics, communication equipment, new energy and other fields.

[0003] In the existing technology, inductors are directly formed by molding coils in soft magnetic composite material powder. However, inductors obtained in this way are prone to electromagnetic interference, and the core eddy current loss is large under high-frequency operating conditions, resulting in radiated noise. Utility Model Content

[0004] The purpose of this invention is to propose an inductor that solves the problems of electromagnetic interference, high core eddy current loss, and radiated noise in existing inductors under high-frequency operating conditions.

[0005] Therefore, this utility model provides an inductor, comprising: a coil, electrodes, a magnetic core, and a housing, wherein the magnetic core is inside the housing, the coil is wound on the magnetic core, the two ends of the coil are connected to the electrodes, and the electrodes extend to the outside of the housing.

[0006] Preferably, the magnetic core is cylindrical and has grooves on its sidewalls.

[0007] Preferably, the coil is wound inside the groove.

[0008] Preferably, one end of the electrode is provided with an arc plate.

[0009] Preferably, the arc plate is connected to one lead of the coil.

[0010] Preferably, the material of the magnetic core is ferrite.

[0011] Preferably, the outer shell is made of a soft magnetic composite material.

[0012] Preferably, the surface of the magnetic core is coated with an electromagnetic shielding layer.

[0013] Preferably, the thickness of the electromagnetic shielding layer is 10-20 μm.

[0014] Preferably, the electromagnetic shielding layer is a silver paste layer.

[0015] Beneficial effects:

[0016] 1. This utility model provides an inductor that reduces eddy current losses by winding a coil around a magnetic core, forming a dual conductive structure between the magnetic core and the outer shell; and achieves electromagnetic interference suppression and improves thermal conductivity by reflecting high-frequency noise through an electromagnetic shielding layer.

[0017] 2. By winding the coil within the grooves on the magnetic core, a tight assembly is achieved, making the coil less prone to deformation. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of an embodiment 1 of the inductor provided by this utility model.

[0020] Figure 2 A schematic diagram of the coil and magnetic core of an inductor according to Embodiment 1 of this utility model.

[0021] In the diagram, 1-coil, 2-electrode, 21-arc plate, 3-magnetic core, 31-groove, 4-outer shell. Detailed Implementation

[0022] The following detailed description of preferred embodiments of the present invention, along with the included examples, will make the content of the present invention more readily understood. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. In case of any conflict, the definitions in this specification shall prevail.

[0023] Example 1:

[0024] Provided such as Figures 1-2 An inductor shown includes a coil 1, an electrode 2, a magnetic core 3, and a housing 4. The magnetic core 3 is inside the housing 4, the coil 1 is wound around the magnetic core 3, and the two ends of the coil 1 are connected to the electrode 2, which extends to the outside of the housing 4.

[0025] The magnetic core 3 is cylindrical, with grooves 31 on its sidewalls. The coil 1 is wound inside the grooves 31. By winding the coil 1 inside the grooves 31 on the magnetic core 3, a tight assembly is achieved, and the coil 1 is not easily deformed.

[0026] An arc plate 21 is provided at one end of electrode 2. The arc plate 21 is connected to one lead of coil 1.

[0027] The core 3 is made of ferrite. The outer shell 4 is made of soft magnetic composite material. The inner core 3 uses high-permeability ferrite for energy storage and to reduce core 3 losses. The outer shell 4 uses AIN-SMC soft magnetic composite material, which has high resistance and high thermal conductivity, thereby reducing eddy current losses and improving heat dissipation. Eddy current losses can be reduced by more than 30%, and temperature rise can be reduced by 15-30%.

[0028] The surface of magnetic core 3 is coated with an electromagnetic shielding layer. The thickness of the electromagnetic shielding layer is 10-20 μm. The electromagnetic shielding layer is a silver paste layer. After grounding, the electromagnetic shielding layer forms electromagnetic shielding. The electromagnetic shielding layer is used to reflect high-frequency noise, reducing EMI radiation by 15-20 dB.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An inductor, characterized in that, include: The package includes a coil, electrodes, a magnetic core, and a housing. The magnetic core is located inside the housing, and the coil is wound around the magnetic core. The two ends of the coil are connected to electrodes that extend to the outside of the housing.

2. An inductor according to claim 1, characterized in that, The magnetic core is cylindrical with grooves on its sidewalls.

3. An inductor according to claim 2, characterized in that, The coil is wound inside the groove.

4. An inductor according to claim 1, characterized in that, One end of the electrode is provided with an arc plate.

5. An inductor according to claim 4, characterized in that, The arc plate is connected to one lead of the coil.

6. An inductor according to claim 1, characterized in that, The magnetic core is made of ferrite.

7. An inductor according to claim 1, characterized in that, The outer shell is made of a soft magnetic composite material.

8. An inductor according to claim 1, characterized in that, The surface of the magnetic core is coated with an electromagnetic shielding layer.

9. An inductor according to claim 6, characterized in that, The thickness of the electromagnetic shielding layer is 10-20 μm.

10. An inductor according to claim 6, characterized in that, The electromagnetic shielding layer is a silver paste layer.

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