A new combined magnetic core
Patent Information
- Application Number
- CN202522754085.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-25
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-12-25
AI Technical Summary
Traditional DC transformers have high magnetic circuit losses, low efficiency, and limited heat dissipation area, making them unable to meet the ever-increasing energy efficiency requirements.
A novel combined magnetic core structure is adopted, which includes multiple magnetic core components arranged in a "日" shape, increases heat dissipation slots and air duct design, and optimizes magnetic circuit design to reduce magnetic circuit loss and increase heat dissipation area.
By optimizing the magnetic circuit design and increasing the heat dissipation area, magnetic circuit losses are significantly reduced, transformer efficiency is improved, and service life is extended.
Smart Images
Figure CN224934581U_ABST
Abstract
Description
Technical Field
[0001] The present utility model relates to a magnetic core for magnetic devices, and more specifically, relates to a novel combined magnetic core. Background Art
[0002] Conventional DC transformers usually adopt a single magnetic core structure. During the energy conversion process, such a structure has large magnetic circuit loss, resulting in low transformer efficiency, which cannot meet the increasingly improved energy efficiency requirements. Meanwhile, the heat dissipation design of conventional DC transformers is relatively simple, most of which rely on natural heat dissipation through their own surfaces, with a limited heat dissipation area. Under high-power working conditions, heat is difficult to dissipate quickly, which will not only further reduce the transformer efficiency, but also shorten its service life, and even affect the normal operation of the entire circuit. Contents of the Utility Model
[0003] The technical problem to be solved by the present utility model is to provide a novel combined magnetic core with low magnetic circuit loss, high efficiency and large heat dissipation area, aiming at the above-mentioned defects of the prior art. The technical solution adopted by the present utility model to solve its technical problem is: constructing a novel combined magnetic core, comprising a first magnetic core assembly, a second magnetic core assembly, a third magnetic core assembly, a first center post assembly arranged between the first magnetic core assembly and the second magnetic core assembly, and a second center post assembly arranged between the second magnetic core assembly and the third magnetic core assembly; The first magnetic core assembly, the second magnetic core assembly and the third magnetic core assembly have the same shape and are arranged in a straight line along the first direction to form a shape like the Chinese character "日"; A first heat dissipation groove and a second heat dissipation groove are respectively provided on both sides of the first magnetic core assembly, the second magnetic core assembly and the third magnetic core assembly along the second direction; The first direction is perpendicular to the second direction.
[0004] In the novel combined magnetic core of the present utility model, both sides of the first magnetic core assembly, the second magnetic core assembly, the third magnetic core assembly, the first center post assembly and the second center post assembly are respectively recessed inward to form a first air duct and a second air duct extending along the first direction.
[0005] In the novel combined magnetic core of the present utility model, the first magnetic core assembly comprises a first magnetic core structure and a second magnetic core structure, the first magnetic core structure and the second magnetic core structure are identical and arranged symmetrically to each other; the first side surface of the first magnetic core structure and the first side surface of the second magnetic core structure are attached to each other and fixed by adhesive; The second magnetic core assembly comprises a third magnetic core structure and a fourth magnetic core structure, the third magnetic core structure and the fourth magnetic core structure are identical and arranged symmetrically to each other; the first side surface of the third magnetic core structure and the first side surface of the fourth magnetic core structure are attached to each other and fixed by adhesive; The third magnetic core assembly includes a fifth magnetic core structure and a sixth magnetic core structure. The fifth magnetic core structure and the sixth magnetic core structure are identical and symmetrically arranged. The first side of the fifth magnetic core structure and the first side of the sixth magnetic core structure are attached to each other and fixed by adhesive.
[0006] In the novel combined magnetic core described in this utility model, the first magnetic core structure, the second magnetic core structure, the third magnetic core structure, the fourth magnetic core structure, the fifth magnetic core structure, and the sixth magnetic core structure are identical to each other; The first magnetic core structure, the second magnetic core structure, the third magnetic core structure, the fourth magnetic core structure, the fifth magnetic core structure, and the sixth magnetic core structure have the same shape; the third magnetic core structure, the fourth magnetic core structure, the fifth magnetic core structure, and the sixth magnetic core structure have the same size and are larger than the size of the first magnetic core structure and the second magnetic core structure.
[0007] In the novel combined magnetic core described in this utility model, the first magnetic core structure includes a first base, a first side post extending perpendicularly to the first base along a first side wall of the first base, and a first mounting portion disposed in the center of the first base; The second magnetic core structure includes a second base, a second side post extending perpendicularly to the second base along a first side wall of the second base, and a second mounting portion disposed in the center of the second base; The third magnetic core structure includes a third base, a third side post extending perpendicularly to the third base along the first side wall of the third base, and a third mounting portion disposed in the center of the third base. The fourth magnetic core structure includes a fourth base, a fourth side post extending perpendicularly to the fourth base along the first side wall of the fourth base, and a fourth mounting portion disposed in the center of the fourth base. The fifth magnetic core structure includes a fifth base, a fifth side post extending perpendicularly to the fifth base along the first side wall of the fifth base, and a fifth mounting portion disposed in the center of the fifth base; The sixth magnetic core structure includes a sixth base, a sixth side post extending perpendicularly to the sixth base along the first side wall of the sixth base, and a sixth mounting portion disposed in the center of the sixth base.
[0008] In the novel combined magnetic core described in this utility model, a first groove is provided in the center of the first side post, a second groove is provided in the center of the second side post, a third groove is provided in the center of the third side post, a fourth groove is provided in the center of the fourth side post, a fifth groove is provided in the center of the fifth side post, and a sixth groove is provided in the center of the sixth side post. The first groove, the third groove, and the fifth groove are arranged in a straight line to form the first heat dissipation groove; The second groove, the fourth groove, and the sixth groove are arranged in a straight line to form the second heat dissipation groove.
[0009] In the novel combined magnetic core described in this utility model, the depth of the heat dissipation groove is equal to the width of the side post, and the width of the heat dissipation groove is between one-sixth and one-seventh of the height of the side post; and / or Heat dissipation holes are respectively provided on the first base, the second base, the third base, the fifth base and the sixth base.
[0010] In the novel combined magnetic core described in this utility model, the second sidewall of the first base is attached to the second sidewall of the second base and fixed by adhesive. The second sidewall of the third base is attached to the second sidewall of the fourth base and fixed by adhesive. The second sidewall of the fifth base is attached to the second sidewall of the sixth base and fixed by adhesive. The top surface of the first side post is attached to the bottom surface of the third base and fixed by adhesive; the top surface of the second side post is attached to the bottom surface of the fourth base and fixed by adhesive. The top surface of the third side post is attached to the top surface of the fifth side post and fixed with adhesive, and the top surface of the fourth side post is attached to the top surface of the sixth side post and fixed with adhesive.
[0011] In the novel combined magnetic core described in this utility model, the first mounting part and the second mounting part are attached together and fixed by adhesive to form a first central column mounting part; The first center column assembly is installed between the first center column mounting part and the bottom surface of the third base and the bottom surface of the fourth base; The third mounting part and the fourth mounting part are attached together and fixed by adhesive to form the second center column mounting part; the fifth mounting part and the sixth mounting part are attached together and fixed by adhesive to form the third center column mounting part. The second center column assembly is installed between the second center column mounting part and the third center column mounting part.
[0012] In the novel combined magnetic core described in this utility model, the first center column assembly and the second center column assembly each include multiple center column segments; The shape of each central column segment is the same as that of the first central column mounting part, the second central column mounting part, and the third central column mounting part; The first base, the second base, the third base, the fifth base and the sixth base each have a rectangular cross section in the first direction, the middle column segment, the first middle column mounting portion, the second middle column mounting portion and the third middle column mounting portion are racetrack-shaped with the middle part recessed inwards, so as to form the first air duct and the second air duct each having a rectangular cross section.
[0013] The novel combined magnetic core of the present utility model comprises a first magnetic core assembly, a second magnetic core assembly, a third magnetic core assembly, a first middle column assembly arranged between the first magnetic core assembly and the second magnetic core assembly, and a second middle column assembly arranged between the second magnetic core assembly and the third magnetic core assembly. The first magnetic core assembly, the second magnetic core assembly and the third magnetic core assembly have the same shape and are arranged linearly in a shape of Chinese character "ri" along the first direction. A first heat dissipation groove and a second heat dissipation groove are respectively provided on both sides of the first magnetic core assembly, the second magnetic core assembly and the third magnetic core assembly. Since the novel combined magnetic core of the present utility model is formed by arranging a plurality of magnetic core assemblies in the shape of Chinese character "ri", such a design can optimize the magnetic circuit design, reduce the volume, make the magnetic flux distribution more uniform, greatly reduce the magnetic circuit loss, and thus improve the overall efficiency. By providing the first heat dissipation groove and the second heat dissipation groove on both sides of the first magnetic core assembly, the second magnetic core assembly and the third magnetic core assembly respectively, the heat dissipation area can be increased, and the service life thereof can be prolonged. Brief Description of the Drawings
[0014] The present utility model will be further described below with reference to the accompanying drawings and embodiments, in which the drawings: Figure 1 is an assembly schematic diagram of a preferred embodiment of the novel combined magnetic core of the present utility model; Figure 2 is an assembly schematic diagram of another angle of the preferred embodiment of the novel combined magnetic core of the present utility model; Figure 3 is an assembly schematic diagram of still another angle of the preferred embodiment of the novel combined magnetic core of the present utility model; Figure 4 is an assembly schematic diagram of each magnetic core assembly of the novel combined magnetic core of the present utility model. Detailed Description of the Preferred Embodiments
[0015] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model, and are not intended to limit the present utility model.
[0016] Figure 1 is an assembly schematic diagram of the preferred embodiment of the novel combined magnetic core of the present utility model. As shown in Figure 1As shown, the novel combined magnetic core of the present utility model includes a first magnetic core assembly 100, a second magnetic core assembly 200, a third magnetic core assembly 300, a first center post assembly 400 disposed between the first magnetic core assembly 100 and the second magnetic core assembly 200, and a second center post assembly 500 disposed between the second magnetic core assembly 200 and the third magnetic core assembly 300; the first magnetic core assembly 100, the second magnetic core assembly 200 and the third magnetic core assembly 300 have the same shape and are linearly arranged in a shape of the Chinese character "ri" along the first direction A; on both sides of the first magnetic core assembly 100, the second magnetic core assembly 200 and the third magnetic core assembly 300 along the second direction B, a first heat dissipation groove 600 and a second heat dissipation groove 700 are respectively provided; the first direction A is perpendicular to the second direction B.
[0017] The novel combined magnetic core of the present utility model comprises a first magnetic core assembly, a second magnetic core assembly, a third magnetic core assembly, a first center post assembly disposed between the first magnetic core assembly and the second magnetic core assembly, and a second center post assembly disposed between the second magnetic core assembly and the third magnetic core assembly; the first magnetic core assembly, the second magnetic core assembly and the third magnetic core assembly have the same shape and are linearly arranged in a shape of the Chinese character "ri" along the first direction; a first heat dissipation groove and a second heat dissipation groove are respectively provided on both sides of the first magnetic core assembly, the second magnetic core assembly and the third magnetic core assembly. Since the novel combined magnetic core of the present utility model is formed by arranging a plurality of magnetic core assemblies in the shape of the Chinese character "ri", such a design can optimize the magnetic circuit design, reduce the volume, make the magnetic flux distribution more uniform, greatly reduce the magnetic circuit loss, and thus improve the overall efficiency. By arranging the first heat dissipation groove and the second heat dissipation groove on both sides of the first magnetic core assembly, the second magnetic core assembly and the third magnetic core assembly respectively, the heat dissipation area can be increased, and the service life thereof can be prolonged.
[0018] Figure 2 is an assembly schematic diagram of the preferred embodiment of the novel combined magnetic core of the present utility model from another angle. Figure 3 is an assembly schematic diagram of the preferred embodiment of the novel combined magnetic core of the present utility model from a further angle. Figure 4 is an assembly schematic diagram of each magnetic core assembly of the novel combined magnetic core of the present utility model.
[0019] in conjunction with Figures 1-4It can be seen that the novel combined magnetic core of the present utility model comprises a first magnetic core assembly 100, a second magnetic core assembly 200, a third magnetic core assembly 300, a first center pillar assembly 400 arranged between the first magnetic core assembly 100 and the second magnetic core assembly 200, and a second center pillar assembly 500 arranged between the second magnetic core assembly 200 and the third magnetic core assembly 300; the first magnetic core assembly 100, the second magnetic core assembly 200 and the third magnetic core assembly 300 have the same shape and are linearly arranged in a shape of the Chinese character "ri" along a first direction; two sides of the first magnetic core assembly 100, the second magnetic core assembly 200 and the third magnetic core assembly 300 are respectively provided with a first heat dissipation groove 600 and a second heat dissipation groove 700.
[0020] Further as Figure 3 shown, two sides of the first magnetic core assembly 100, the second magnetic core assembly 200, the third magnetic core assembly 300, the first center pillar assembly 400 and the second center pillar assembly 500 are respectively recessed inward to form a first air duct 800 and a second air duct 900 extending along the first direction.
[0021] As Figure 2 shown, the first magnetic core assembly 100 comprises a first magnetic core structure 110 and a second magnetic core structure 120, the first magnetic core structure 110 and the second magnetic core structure 120 are identical and arranged symmetrically to each other; the first side surface of the first magnetic core structure 110 is attached to the first side surface of the second magnetic core structure 120 and fixed by gluing; the second magnetic core assembly 200 comprises a third magnetic core structure 210 and a fourth magnetic core structure 220, the third magnetic core structure 210 and the fourth magnetic core structure 220 are identical and arranged symmetrically to each other; the first side surface of the third magnetic core structure 210 is attached to the first side surface of the fourth magnetic core structure 220 and fixed by gluing; the third magnetic core assembly 300 comprises a fifth magnetic core structure 310 and a sixth magnetic core structure 320, the fifth magnetic core structure 310 and the sixth magnetic core structure 320 are identical and arranged symmetrically to each other; the first side surface of the fifth magnetic core structure 310 is attached to the first side surface of the sixth magnetic core structure 320 and fixed by gluing.
[0022] In a preferred embodiment of this invention, the first magnetic core structure 110, the second magnetic core structure 120, the third magnetic core structure 210, the fourth magnetic core structure 220, the fifth magnetic core structure 310, and the sixth magnetic core structure 320 are identical to each other. In another preferred embodiment of this invention, the first magnetic core structure 110, the second magnetic core structure 120, the third magnetic core structure 210, the fourth magnetic core structure 220, the fifth magnetic core structure 310, and the sixth magnetic core structure 320 have the same shape but different dimensions. For example, the third magnetic core structure 210, the fourth magnetic core structure 220, the fifth magnetic core structure 310, and the sixth magnetic core structure 320 have the same dimensions and are larger than the dimensions of the first magnetic core structure 110 and the second magnetic core structure 120. Of course, it is also possible that the third magnetic core structure 210, the fourth magnetic core structure 220, the fifth magnetic core structure 310, and the sixth magnetic core structure 320 have the same dimensions and are smaller than the dimensions of the first magnetic core structure 110 and the second magnetic core structure 120. Of course, other size settings can also be used, depending on the number of turns of the subsequent coil, all of which fall within the protection scope of this application.
[0023] Further as Figure 4 As shown, the first magnetic core structure 110 includes a first base 111, a first side post 112 extending perpendicularly to the first base 111 along a first side wall of the first base 111, and a first mounting portion 113 disposed at the center of the first base 111; the second magnetic core structure 120 includes a second base 121, a second side post 122 extending perpendicularly to the second base 121 along a first side wall of the second base 121, and a second mounting portion 123 disposed at the center of the second base 121; the third magnetic core structure 210 includes a third base 211, a third side post 212 extending perpendicularly to the third base 211 along a first side wall of the third base 211, and a third mounting portion 213 disposed at the center of the third base 211. 3; The fourth magnetic core structure 220 includes a fourth base 221, a fourth side post 222 extending perpendicularly to the fourth base 221 along the first side wall of the fourth base 221, and a fourth mounting portion 223 disposed in the center of the fourth base 221; The fifth magnetic core structure 310 includes a fifth base 311, a fifth side post 312 extending perpendicularly to the fifth base 311 along the first side wall of the fifth base 311, and a fifth mounting portion 313 disposed in the center of the fifth base 311; The sixth magnetic core structure 320 includes a sixth base 321, a sixth side post 322 extending perpendicularly to the sixth base 321 along the first side wall of the sixth base 321, and a sixth mounting portion 323 disposed in the center of the sixth base 321.
[0024] A first groove is provided in the center of the first side column 112, a second groove 711 is provided in the center of the second side column 122, a third groove is provided in the center of the third side column 212, a fourth groove 712 is provided in the center of the fourth side column 222, a fifth groove is provided in the center of the fifth side column 312, and a sixth groove 713 is provided in the center of the sixth side column 322; the first groove, the third groove and the fifth groove are arranged in a straight line to form the first heat dissipation groove 600; the second groove 711, the fourth groove 712 and the sixth groove 713 are arranged in a straight line to form the second heat dissipation groove 700.
[0025] Preferably, the depth of the heat dissipation groove is equal to the width of the side column, and the width of the heat dissipation groove is between one sixth and one seventh of the height of the side column.
[0026] Preferably, heat dissipation holes 620 are respectively opened on the first base 111, the second base 121, the third base 211, the fifth base 311 and the sixth base 321.
[0027] in conjunction with Figures 1-4 , the second side wall of the first base 111 is attached to the second side wall of the second base 121 and fixed by adhesive; the second side wall of the third base 211 is attached to the second side wall of the fourth base 221 and fixed by adhesive; the second side wall of the fifth base 311 is attached to the second side wall of the sixth base 321 and fixed by adhesive; the top surface of the first side column 112 is attached to the bottom surface of the third base 211 and fixed by adhesive; the top surface of the second side column 122 is attached to the bottom surface of the fourth base 221 and fixed by adhesive; the top surface of the third side column 212 is attached to the top surface of the fifth side column 312 and fixed by adhesive, and the top surface of the fourth side column 222 is attached to the top surface of the sixth side column 322 and fixed by adhesive. That is, as Figure 4 shown, the first magnetic core structure 110, the second magnetic core structure 120, the third magnetic core structure 210, the fourth magnetic core structure 220, the fifth magnetic core structure 310 and the sixth magnetic core structure 320 are respectively bonded and assembled into the first magnetic core assembly 100, the second magnetic core assembly 200, and the third magnetic core assembly 300. After the third magnetic core assembly 300 is turned upside down, it is assembled with the second magnetic core assembly 200, and then the first magnetic core assembly is fastened to the side of the second magnetic core assembly 200 facing away from the third magnetic core assembly 300, so as to form a shape like the Chinese character "日".
[0028] As shown in Figure 4As shown, the first mounting portion 113 and the second mounting portion 123 are fitted together and fixed by adhesive to form a first center column mounting portion; the first center column assembly 400 is installed between the first center column mounting portion and the bottom surfaces of the third base 211 and the fourth base 221; the third mounting portion 213 and the fourth mounting portion 223 are fitted together and fixed by adhesive to form a second center column mounting portion, and the fifth mounting portion 313 and the sixth mounting portion 323 are fitted together and fixed by adhesive to form a third center column mounting portion; the second center column assembly 500 is installed between the second center column mounting portion and the third center column mounting portion.
[0029] The first center pillar assembly 400 and the second center pillar assembly 500 each include a plurality of center pillar segments; the shape of each center pillar segment is the same as the shape of the first center pillar mounting portion, the second center pillar mounting portion, and the third center pillar mounting portion, for example... Figures 1-2 As shown, they are all runway-shaped. Combined with... Figures 1-4 The first base 111, the second base 121, the third base 211, the fifth base 311, and the sixth base 321 have rectangular cross-sections in the first direction; the middle sections of the central column segment, the first central column mounting portion, the second central column mounting portion, and the third central column mounting portion are recessed inward to form the first air duct 800 and the second air duct 900 with rectangular cross-sections, as shown. Figure 3 As shown. Of course, in other preferred embodiments of this utility model, each base can also be selected in other shapes to form, for example, an arc shape, a fan shape, or other shapes of air ducts. Of course, a rectangular air duct is more preferred.
[0030] The novel composite magnetic core of this invention primarily achieves performance improvement through reconfiguration of the core assembly method and optimization of the heat dissipation structure. This novel composite magnetic core comprises six core structures, bonded in pairs and sharing a common edge post, resulting in a final H-shaped distribution of the six core structures. Each core structure can be made of a material with high permeability and low loss. This composite structure optimizes the magnetic circuit design, reduces volume, and makes the magnetic flux distribution more uniform, significantly reducing magnetic circuit losses and thus improving overall efficiency.
[0031] Furthermore, heat dissipation grooves are opened on both sides of the new composite magnetic core. They are long and strip-shaped and set along the first direction (i.e., length). The heat dissipation grooves are located in the middle of the side post, with a depth equal to the width of the side post and a width equal to one-sixth to one-seventh of the height of the side post. The design of the side grooves increases the contact area with air. When air cooling is used, the airflow can flow through the grooves more fully and carry away more heat.
[0032] Furthermore, independent air ducts are set at the top and bottom of the new composite magnetic core. These independent air ducts are trapezoidal channels, with their cross-sectional dimensions designed according to airflow requirements. While fan-shaped or other shapes are also possible, a trapezoidal shape is preferred to improve the structural strength of the magnetic core. Both ends are connected to external air ducts, guiding airflow quickly and ensuring stable airflow, further enhancing heat dissipation.
[0033] Heat dissipation holes are made on each base of the magnetic core structure. These holes can be of various shapes, such as circles, triangles, or squares, but circles are preferred. This creates an effective airflow channel and further enhances the heat dissipation effect. The size of the circular holes is designed according to the airflow requirements, which ensures that the temperature remains below the safe level during operation.
[0034] In implementing the novel combined magnetic core of this utility model, all connections are bonded using high-performance special adhesive. The adhesive is applied evenly to cover the connection surfaces, ensuring a stable and airtight bond, allowing the magnetic core assembly to form a unified and stable structure. Simultaneously, during processing, the inner walls of the air ducts and independent grooves undergo meticulous treatment, using grinding and polishing processes to ensure a smooth, burr-free surface, allowing for unimpeded airflow and further enhancing heat dissipation.
[0035] Although this utility model has been described through specific embodiments, those skilled in the art should understand that various modifications and equivalent substitutions can be made to this utility model without departing from its scope. Furthermore, various modifications can be made to this utility model for specific situations or materials without departing from its scope. Therefore, this utility model is not limited to the specific embodiments disclosed, but should include all embodiments falling within the scope of the claims of this utility model.
[0036] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A novel composite magnetic core, characterized in that, comprising a first magnetic core assembly, a second magnetic core assembly, a third magnetic core assembly, a first center post assembly disposed between the first magnetic core assembly and the second magnetic core assembly, and a second center post assembly disposed between the second magnetic core assembly and the third magnetic core assembly; the first magnetic core assembly, the second magnetic core assembly and the third magnetic core assembly have the same shape and are linearly arranged in a shape of the Chinese character "日" along a first direction; a first heat dissipation groove and a second heat dissipation groove are respectively provided on two sides of the first magnetic core assembly, the second magnetic core assembly and the third magnetic core assembly along a second direction; the first direction is perpendicular to the second direction.
2. The novel composite magnetic core according to claim 1, characterized in that, Two sides of the first magnetic core assembly, the second magnetic core assembly, the third magnetic core assembly, the first center post assembly and the second center post assembly are respectively recessed inward to form a first air duct and a second air duct extending along the first direction.
3. The novel composite magnetic core according to claim 2, characterized in that, The first magnetic core assembly comprises a first magnetic core structure and a second magnetic core structure, the first magnetic core structure and the second magnetic core structure are identical and arranged symmetrically to each other; a first side surface of the first magnetic core structure and a first side surface of the second magnetic core structure are attached to each other and fixed by adhesive; The second magnetic core assembly comprises a third magnetic core structure and a fourth magnetic core structure, the third magnetic core structure and the fourth magnetic core structure are identical and arranged symmetrically to each other; a first side surface of the third magnetic core structure and a first side surface of the fourth magnetic core structure are attached to each other and fixed by adhesive; The third magnetic core assembly comprises a fifth magnetic core structure and a sixth magnetic core structure, the fifth magnetic core structure and the sixth magnetic core structure are identical and arranged symmetrically to each other; a first side surface of the fifth magnetic core structure and a first side surface of the sixth magnetic core structure are attached to each other and fixed by adhesive.
4. The novel composite magnetic core according to claim 3, characterized in that, The first magnetic core structure, the second magnetic core structure, the third magnetic core structure, the fourth magnetic core structure, the fifth magnetic core structure and the sixth magnetic core structure are identical to each other; The first magnetic core structure, the second magnetic core structure, the third magnetic core structure, the fourth magnetic core structure, the fifth magnetic core structure and the sixth magnetic core structure have the same shape; the third magnetic core structure, the fourth magnetic core structure, the fifth magnetic core structure and the sixth magnetic core structure have the same size which is larger than the sizes of the first magnetic core structure and the second magnetic core structure.
5. The novel composite magnetic core according to claim 4, characterized in that, The first magnetic core structure comprises a first base, a first side post extending perpendicularly to the first base along a first side wall of the first base, and a first mounting portion arranged at the center of the first base; The second magnetic core structure comprises a second base, a second side post extending perpendicularly to the second base along a first side wall of the second base, and a second mounting portion arranged at the center of the second base; The third magnetic core structure comprises a third base, a third side post extending perpendicularly to the third base along a first side wall of the third base, and a third mounting portion arranged at the center of the third base; The fourth magnetic core structure comprises a fourth base, a fourth side post extending perpendicularly to the fourth base along a first side wall of the fourth base, and a fourth mounting portion arranged at the center of the fourth base; The fifth magnetic core structure includes a fifth base, a fifth side post extending perpendicularly to the fifth base along the first side wall of the fifth base, and a fifth mounting portion disposed in the center of the fifth base; The sixth magnetic core structure includes a sixth base, a sixth side post extending perpendicularly to the sixth base along the first side wall of the sixth base, and a sixth mounting portion disposed in the center of the sixth base.
6. The novel composite magnetic core according to claim 5, characterized in that, The first side post has a first groove in the center, the second side post has a second groove in the center, the third side post has a third groove in the center, the fourth side post has a fourth groove in the center, the fifth side post has a fifth groove in the center, and the sixth side post has a sixth groove in the center. The first groove, the third groove, and the fifth groove are arranged in a straight line to form the first heat dissipation groove; The second groove, the fourth groove, and the sixth groove are arranged in a straight line to form the second heat dissipation groove.
7. The novel composite magnetic core according to claim 6, characterized in that, The depth of the heat dissipation groove is equal to the width of the side post, and the width of the heat dissipation groove is between one-sixth and one-seventh of the height of the side post; and / or Heat dissipation holes are respectively provided on the first base, the second base, the third base, the fifth base and the sixth base.
8. The novel composite magnetic core according to claim 5, characterized in that, The second sidewall of the first base is fitted to the second sidewall of the second base and fixed by adhesive. The second sidewall of the third base is attached to the second sidewall of the fourth base and fixed by adhesive. The second sidewall of the fifth base is attached to the second sidewall of the sixth base and fixed by adhesive. The top surface of the first side post is attached to the bottom surface of the third base and fixed by adhesive; the top surface of the second side post is attached to the bottom surface of the fourth base and fixed by adhesive. The top surface of the third side post is attached to the top surface of the fifth side post and fixed with adhesive, and the top surface of the fourth side post is attached to the top surface of the sixth side post and fixed with adhesive.
9. The novel composite magnetic core according to any one of claims 5 to 8, characterized in that, The first mounting part and the second mounting part are fitted together and fixed by adhesive to form the first central column mounting part; The first center column assembly is installed between the first center column mounting part and the bottom surface of the third base and the bottom surface of the fourth base; The third mounting part and the fourth mounting part are attached together and fixed by adhesive to form the second center column mounting part; the fifth mounting part and the sixth mounting part are attached together and fixed by adhesive to form the third center column mounting part. The second center column assembly is installed between the second center column mounting part and the third center column mounting part.
10. The novel composite magnetic core according to claim 9, characterized in that, The first center column assembly and the second center column assembly each include multiple center column segments; The shape of each central column segment is the same as that of the first central column mounting part, the second central column mounting part, and the third central column mounting part; The first base, the second base, the third base, the fifth base, and the sixth base have rectangular cross-sections in the first direction. The central column segment, the first central column mounting part, the second central column mounting part, and the third central column mounting part are racetrack-shaped with their middle parts concave inward, thereby forming the first air duct and the second air duct with rectangular cross-sections.