High-power small-size common mode choke

Abstract

The utility model relates to the field of electronic components, and discloses a high-power small-size common mode inductor which comprises a shell, a copper conductor and a magnetic core. The outer shell is made of insulating high-temperature-resistant materials, the inner shell is designed in the outer shell to form a space for containing the magnetic core, and the magnetic core is made of high-performance soft magnetic ferrite to improve magnetic conductivity and saturation flux density. A through hole is formed in one side of the shell, so that the copper conductor can be inserted and fixed conveniently; the inner shell is tightly matched with the outer shell, and the magnetic core is stably connected with the inner shell through a middle through hole. And the copper conductor adopts an n-shaped or u-shaped design to replace a traditional winding module, so that the process is simplified, and the current bearing and heat dissipation efficiency is improved. The upper surface of the magnetic core is provided with an adhesive layer to firmly adhere the shell and the magnetic core, and structural stability is enhanced. The inner shell is provided with air holes to promote heat dissipation and guarantee long-term stable operation of the inductor. According to the utility model, high power density, miniaturization and high-efficiency heat dissipation are realized, and the high-power electronic equipment is suitable for high-power electronic equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of common-mode inductors, in particular to a high-power and small-volume common-mode inductor. Background Art

[0002] With the rapid development of modern electronic technology, various electronic devices are placing increasing demands on the quality and stability of their power supplies. This is especially true in high-power applications such as server power supplies, electric vehicle chargers, and industrial control equipment. Common-mode inductors, as key components in filter circuits, have a performance that directly impacts the stability and efficiency of the entire system. Traditional common-mode inductors typically utilize a winding module design. This is not only bulky, limiting the miniaturization of electronic devices, but also prone to overheating at high power densities, impacting the inductor's long-term reliability and service life. Furthermore, the winding process is complex, resulting in low production efficiency and high costs, making it difficult to meet the demands of large-scale production. Utility Model Content

[0003] In view of the deficiencies in the prior art, the present invention provides a high-power, small-volume common-mode inductor, which solves the problems raised by the above-mentioned background technology.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: a high-power, small-volume common-mode inductor, comprising a shell, a copper conductor and a magnetic core, an inner shell being provided inside the shell, a magnetic core being provided between the outer shell and the inner shell, and the copper conductor being inserted into the outer shell and the inner shell and extending to the bottom of the shell.

[0005] Furthermore, a through hole 1 is provided on one side of the shell, and the through hole is adapted to be inserted and connected with the copper conductor.

[0006] Furthermore, a second through hole is provided in the middle of the magnetic core, and the second through hole is adapted to the shape of the inner shell and is connected and fixed.

[0007] Furthermore, the inner shell is provided with a plurality of jacks and vent holes, and one end of the plurality of copper conductors passes through the jacks and extends to the bottom of the outer shell to form pins.

[0008] Furthermore, an adhesive layer is provided on the upper surface of the magnetic core inside the shell, and the adhesive layer adheres and fixes the shell and the magnetic core.

[0009] Furthermore, the air holes are provided in the middle of the inductor, and ventilation and heat dissipation are performed through the air holes.

[0010] Furthermore, the copper conductor is in an n- or u-shaped shape and is made of copper or aluminum, and the copper conductor replaces a traditional winding module.

[0011] The utility model provides a high-power, small-volume common-mode inductor. Compared with the existing technology, it has the following advantages:

[0012] This high-power, small-volume common-mode inductor effectively improves the inductor's heat dissipation performance by replacing traditional winding modules with N- or U-shaped copper conductors and combining them with ventilation holes on the inner shell. The N- or U-shaped copper conductors not only increase the heat dissipation area but also reduce energy loss and heat generation by optimizing the current path. Furthermore, the ventilation holes promote natural convection or forced air cooling, further accelerating heat dissipation and ensuring long-term stable operation of the inductor at high power density, extending its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the split structure of the utility model;

[0014] Figure 2 It is a structural diagram of the magnetic core in the utility model;

[0015] Figure 3 This is a schematic structural diagram of the utility model after assembly from the first perspective;

[0016] Figure 4 This is a schematic structural diagram of the utility model from a second perspective after assembly.

[0017] In the figure: 1, outer shell; 12, inner shell; 14, through hole 1; 15, jack; 17, vent hole; 2, copper conductor; 3, magnetic core; 31, through hole 2; 4, adhesive layer. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] See also Figure 1-4The utility model provides a technical solution: a high-power, small-volume common-mode inductor mainly consists of an outer shell 1, a copper conductor 2 and a magnetic core 3. The outer shell 1 is made of an insulating and high-temperature resistant material, and an inner shell 12 is designed inside it, and a certain space is formed between the two to accommodate the magnetic core 3. The magnetic core 3 uses high-performance soft magnetic ferrite material to improve the magnetic permeability and saturation magnetic induction intensity of the inductor, so as to meet the needs of high-power applications. The bottom of the outer shell 1 is closed and the top is open, and the inner shell 12 is designed to be a structure that matches the internal shape of the outer shell 1. The two fit tightly but do not directly contact, providing space for the installation of the magnetic core 3. A through hole 14 is provided on one side of the outer shell 1. The size of the through hole 14 matches the copper conductor 2, which is convenient for the insertion and fixation of the copper conductor 2. A through hole 2 31 is provided in the middle of the magnetic core 3, and its shape matches a certain part of the inner shell 12. Through the through hole 2 31, the magnetic core 3 can be firmly connected to the inner shell 12, which not only ensures the stability of the structure but also facilitates assembly.

[0020] The copper conductor 2 is designed in an n- or u-shaped shape and is made of copper or aluminum with high conductivity to replace the traditional winding module. One end of several copper conductors 2 passes through the jack 15 on the inner shell 12 and extends to the bottom of the outer shell 1 to form a pin for connection to the external circuit. This design not only simplifies the production process, but also improves the current carrying capacity and heat dissipation efficiency of the inductor. On the upper surface of the magnetic core 3, an adhesive layer 4 is provided inside the outer shell 1. The adhesive layer 4 uses glue with good thermal conductivity to firmly adhere the outer shell 1 and the magnetic core 3 together, further enhancing the stability of the structure. In order to effectively dissipate heat, a number of air holes 17 are provided on the inner shell 12. These air holes 17 are located in the middle of the inductor. Through natural convection or forced air cooling, the heat generated by the inductor during operation can be effectively discharged, ensuring the long-term stable operation of the inductor.

Claims

1. A high-power, small-volume common-mode inductor, comprising a housing (1), a copper conductor (2) and a magnetic core (3), characterized in that: An inner shell (12) is provided inside the outer shell (1), a magnetic core (3) is provided between the outer shell (1) and the inner shell (12), and the copper conductor (2) is inserted into the outer shell (1) and the inner shell (12) and extends to the bottom of the outer shell (1).

2. The high-power, small-volume common-mode inductor according to claim 1, characterized in that: A through hole (14) is provided on one side of the housing (1), and the through hole (14) is adapted to be inserted and connected with the copper conductor (2).

3. The high-power, small-volume common-mode inductor according to claim 1, characterized in that: A second through hole (31) is provided in the middle of the magnetic core (3), and the second through hole (31) is adapted to the shape of the inner shell (12) and is connected and fixed.

4. The high-power, small-volume common-mode inductor according to claim 1, characterized in that: The inner shell (12) is provided with a plurality of jacks (15) and vent holes (17), and one end of the plurality of copper conductors (2) passes through the jacks (15) and extends to the bottom of the outer shell (1) to form pins.

5. The high-power, small-volume common-mode inductor according to claim 1, characterized in that: An adhesive layer (4) is provided on the upper surface of the magnetic core (3) inside the shell (1), and the adhesive layer (4) adheres and fixes the shell (1) and the magnetic core (3).

6. The high-power, small-volume common-mode inductor according to claim 1, characterized in that: The air vent (17) is arranged in the middle of the inductor, and ventilation and heat dissipation are performed through the air vent (17).

7. The high-power, small-volume common-mode inductor according to claim 1, characterized in that: The copper conductor (2) is in an n- or u-shaped shape and is made of copper or aluminum. The copper conductor (2) replaces a traditional winding module.

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