High-power magnetic core
By using an irregularly shaped central column in a high-power magnetic core and opening heat dissipation holes on the central column, the problem of difficult heat dissipation of the magnetic core was solved, resulting in better heat dissipation and performance improvement.
Patent Information
- Application Number
- CN202423160698.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2034-12-20
AI Technical Summary
High-power magnetic cores are difficult to heat up, especially the central column, which leads to excessive local temperature rise and affects the utilization rate and performance of the magnetic core.
It adopts an irregularly shaped central column with heat dissipation holes, combined with the side panel design to enhance air circulation and provide good heat dissipation.
It effectively reduces the core temperature, improves the core's heat dissipation performance, reduces noise and vibration, and enhances magnetic flux utilization and overall performance.
Smart Images
Figure CN223665260U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to magnetic component technical field, especially relates to a high -power magnetic core. BACKGROUND
[0002] The large volume magnetic core is not easy to radiate heat, because the thermal conductivity of the magnetic core is low, the thermal conductivity of the commonly used ferrite magnetic core is 3.5~7W / (m•K). The heat that needs to be radiated increases after the volume of the magnetic core increases, the thermal conductivity of the magnetic core is low, and the temperature gradient increases, which will cause the local temperature of the magnetic core to be too high, and the overall utilization rate of the magnetic core is low. Especially the heat of the middle column, the middle column is wrapped by the coil and the heat dissipation area is small, the heat needs to be conducted to the top cover of the magnetic core through the middle column and then radiated out, and after the middle column of the magnetic core is lengthened, the heat dissipation is more difficult. SUMMARY
[0003] The utility model aims at providing a high -power magnetic core, solve the problem that the magnetic core is not easy to radiate heat in the prior art.
[0004] In order to achieve the above-mentioned purpose, the utility model adopts the technical scheme that:
[0005] The utility model provides a high -power magnetic core, including:
[0006] Bottom plate;
[0007] Side plate, the side plate is divided and is located at the left and right ends of the bottom plate;
[0008] Special-shaped middle column, the special-shaped middle column is arranged between the two side plates and is connected with the bottom plate;
[0009] Radiating hole, the radiating hole is arranged through the special-shaped middle column and the bottom plate.
[0010] Further, the two side plates are recessed to form arc surfaces relative to the inner side surface of the special-shaped middle column.
[0011] Further, the arc surfaces of the two side plates are located on the same circumferential surface.
[0012] Further, the upper end surface height of the side plate is consistent with the upper end surface height of the special-shaped middle column.
[0013] Further, the special-shaped middle column includes a first special-shaped middle column and a second special-shaped middle column, and the first special-shaped middle column and the second special-shaped middle column are symmetrically arranged.
[0014] Further, the first special-shaped middle column and the second special-shaped middle column are provided with the radiating hole along the vertical direction.
[0015] Further, the radiating hole is a circular hole, an oval hole, a square hole, a special-shaped hole or a polygonal hole.
[0016] Further, the radial cross-sectional width of the first and second profiled center posts gradually increases from the two ends to the middle.
[0017] Thanks to the above technical solution, the utility model has the following advantages compared with the prior art:
[0018] The utility model discloses a high -power magnetic core, the profiled center post is integrated on the magnetic core bottom plate, and the heat dissipation hole is set up on the profiled center post simultaneously, makes the magnetic core obtain good heat dissipation effect. BRIEF DESCRIPTION OF DRAWINGS
[0019] Some specific embodiments of the utility model will be described in detail hereinafter with reference to the drawings in an exemplary but not restrictive manner. Identical reference signs in the drawings indicate identical or similar components or parts. It should be understood by those skilled in the art that the drawings are not necessarily drawn to scale. In the drawings:
[0020] Fig. 1 is a structural schematic diagram of a high-power magnetic core provided by the utility model;
[0021] Fig. 2 is a plan view of a high-power magnetic core provided by the utility model;
[0022] Fig. 3 is a front view of a high-power magnetic core provided by the utility model;
[0023] Among them, the figure mark is explained as follows:
[0024] 1, bottom plate;2, side plate;201, arc surface;3, profiled center post;301, first profiled center post;302, second profiled center post;4, heat dissipation hole. DETAILED DESCRIPTION
[0025] The technical solutions of the utility model will be described clearly and completely in combination with the drawings. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.
[0026] Referring to Figs. 1 to 3 , a high-power magnetic core provided in the utility model includes bottom plate 1, side plate 2, profiled center post 3 and heat dissipation hole 4.
[0027] Specifically, the side plates 2 are respectively arranged at the left and right ends of the bottom plate 1, that is, the inner side surface bottom end of the side plate 2 abuts against the side surface bottom end of the bottom plate 1. The special-shaped center column 3 is arranged between the two side plates 2 and connected with the bottom plate 1. The inner surface of the special-shaped center column 3 is recessed to form two arc surfaces 201, and the two arc surfaces 201 are located on the same circumferential surface. In this way, an arc-shaped groove is formed between the two side plates 2 and the special-shaped center column 3, which cooperates with the special-shaped center column 3 to provide a winding space and a fulcrum for the coil.
[0028] In the embodiment of the utility model, the upper end surface height of the aforementioned side plate 2 is consistent with the upper end surface height of the special-shaped center column 3, which can reduce magnetic flux leakage and improve the effective utilization rate of magnetic flux, thereby improving the overall performance of the magnetic core. Moreover, the magnetic field distribution of the magnetic core arranged in this way is more uniform, which can effectively reduce the hysteresis loss and eddy current loss. In addition, the consistent height design can enhance the mechanical strength of the magnetic core and reduce vibration and noise in high-frequency applications. Of course, the height of the special-shaped center column 3 can also be set to be lower than the height of the aforementioned side plate 2, thereby forming a short center column magnetic core, and the specific arrangement height can be reasonably designed and adjusted according to production requirements.
[0029] The special-shaped center column 3 includes a first special-shaped center column 301 and a second special-shaped center column 302 integrally connected with the first special-shaped center column 301. The profile size of the first special-shaped center column 301 is consistent with that of the second special-shaped center column 302. The first special-shaped center column 301 and the second special-shaped center column 302 are symmetrically arranged on the aforementioned bottom plate 1. The center of the first special-shaped center column 301 and the second special-shaped center column 302 is provided with a heat dissipation hole 4 in the vertical direction.
[0030] The arrangement of the heat dissipation hole 4 can effectively increase the air flow in the magnetic core, help dissipate the heat generated by the magnetic core during operation, reduce the temperature, and thereby prevent overheating. High temperature can cause changes in the properties of the magnetic core material, such as a decrease in magnetic permeability. By dissipating heat through the heat dissipation hole 4, the performance of the magnetic core can be maintained stable. High temperature can also cause deformation of components or material fatigue, and the arrangement of the heat dissipation hole 4 can also help reduce the noise and vibration caused by these problems.
[0031] The shape of the heat dissipation hole 4 can be reasonably arranged according to needs, for example, it can be circular, oval, square, special-shaped or polygonal. However, attention should be paid to the selection of the opening position and the size of the opening diameter when opening. The position of the heat dissipation hole 4 should be considered in relation to the position of the heat source to ensure that the hole is located in the heat concentration area to effectively dissipate heat. The size of the hole should be designed according to the heat dissipation requirements and the structural strength to avoid insufficient strength caused by too large hole or too small hole affecting the heat dissipation effect. Different shapes of holes (such as round holes and long holes) may have different flow properties and heat dissipation effects.
[0032] At the same time, the number and spacing of the heat dissipation holes 4 should also be considered to ensure smooth air circulation and avoid local heat accumulation. In addition, when the heat dissipation holes 4 are opened, the ease of processing should also be considered to ensure that material damage or processing difficulties do not occur during production.
[0033] In addition, in the embodiments of the present application, the middle column is provided with a special-shaped structure to further provide a good heat dissipation space for the magnetic core. Specifically, in the present application, the radial cross-sectional width of the first and second special-shaped middle columns 301 and 302 is gradually increased from both ends to the middle, so that the thickness of both ends of the entire middle column is greater than the middle, and the middle section of the middle column forms an air inlet channel for air flow to further dissipate heat from the magnetic core.
[0034] In summary, the present application is a high-power magnetic core that integrates a special-shaped middle column 3 on the bottom plate 1 of the magnetic core and opens heat dissipation holes 4 on the special-shaped middle column 3 to achieve good heat dissipation effect for the magnetic core. At the same time, since the middle column is provided with a special shape, when the coil is wound on the middle column, the gap between the coil and the middle column can allow air to flow through to achieve further heat dissipation effect.
[0035] The above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made in accordance with the spirit and essence of the present application should be covered within the protection scope of the present application.
Claims
1. A high power magnetic core, characterized by, It includes: A bottom plate (1); Side plates (2) are arranged on the left and right ends of the bottom plate (1); An irregular-shaped middle column (3) is arranged between the two side plates (2) and connected with the bottom plate (1); A heat dissipation hole (4) is arranged through the irregular-shaped middle column (3) and the bottom plate (1).
2. A high power magnetic core as claimed in claim 1, wherein, The two side plates (2) are respectively recessed to form arc surfaces (201) relative to the inner side surface of the irregular-shaped middle column (3).
3. A high power magnetic core as claimed in claim 2, wherein, The arc surfaces (201) of the two side plates (2) are located on the same circumferential surface.
4. A high power magnetic core as claimed in claim 1, wherein, The upper end surface height of the side plate (2) is consistent with the upper end surface height of the irregular-shaped middle column (3).
5. A high power magnetic core as claimed in claim 1, wherein, The irregular-shaped middle column (3) includes a first irregular-shaped middle column (301) and a second irregular-shaped middle column (302), and the first irregular-shaped middle column (301) and the second irregular-shaped middle column (302) are symmetrically arranged.
6. A high power magnetic core as claimed in claim 5, characterized in that, The center of the first irregular-shaped middle column (301) and the second irregular-shaped middle column (302) is provided with the heat dissipation hole (4) in the vertical direction.
7. A high power magnetic core as claimed in claim 6, characterized in that The heat dissipation hole (4) is a circular hole, an elliptical hole, a square hole, an irregular hole or a polygonal hole.
8. A high power magnetic core as claimed in claim 5, wherein, The radial cross-sectional width of the first irregular-shaped middle column (301) and the second irregular-shaped middle column (302) gradually increases from both ends to the middle.