Transformer assembly core

Abstract

A transformer combined magnetic core comprises a first magnetic core unit and a second magnetic core unit; the first magnetic core unit and the second magnetic core unit are adhered to each other and bonded by glue; a first recess is formed on a first web of the first magnetic core unit, and a second recess is formed on a second web of the second magnetic core unit; the first recess and the second recess extend linearly along the same plane to form a heat dissipation air duct extending along the length direction of the transformer combined magnetic core. By adopting two magnetic core units to form a combined magnetic core through adhesion and bonding by glue, compared with a single magnetic core, the energy conversion loss is smaller, and the efficiency is higher; and by setting the recesses to form the heat dissipation air duct extending along the length direction of the transformer combined magnetic core, the heat dissipation efficiency can be effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of transformers, and more specifically, to a transformer composite magnetic core. Background Technology

[0002] As the core magnetic component of an LLC converter, the performance of the DC transformer directly affects the efficiency and stability of the entire circuit. Traditional DC transformers typically employ a single magnetic core structure, which suffers from significant energy losses during energy conversion, resulting in low efficiency. Furthermore, the core structure of traditional DC transformers relies solely on its surface for heat dissipation, limiting the available surface area. Under high-power conditions, heat dissipation is difficult, further reducing the transformer's efficiency, shortening its lifespan, and even affecting the normal operation of the entire circuit. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a transformer core with high efficiency, low loss and good heat dissipation performance, in view of the above-mentioned defects of the prior art.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: a transformer combined magnetic core is constructed, including a first magnetic core unit and a second magnetic core unit; the first magnetic core unit and the second magnetic core unit are attached to each other and bonded by adhesive; the first magnetic core unit includes a first central column located in its middle, and the second magnetic core unit includes a second central column located in its middle; a first groove is formed on the first central column, and a second groove is formed on the second central column; the first groove and the second groove extend in a straight line along the same plane to form a heat dissipation channel extending along the length direction of the transformer combined magnetic core.

[0005] In the transformer composite magnetic core of this utility model, the first magnetic core unit further includes a first base, a first side post extending vertically from a first side of the first base, and a second side post extending vertically from a second side of the first base; the first central post extends vertically from the middle of the first base; the first groove extends from the first central post toward the first base and penetrates the first base; The second magnetic core unit includes a second base, a third side post extending vertically from a first side of the second base, and a fourth side post extending vertically from a second side of the second base; the second central post extends vertically from the center of the second base; and the second groove extends from the second central post toward the second base and penetrates the second base.

[0006] In the transformer composite magnetic core of this utility model, the first central column and the second central column are attached together and bonded with glue, the first side column and the third side column are attached together and bonded with glue, and the second side column and the fourth side column are attached together and bonded with glue.

[0007] In the transformer composite magnetic core described in this utility model, the thicknesses of the first side post, the second side post, the third side post, and the fourth side post are equal. The first groove is located at the center of the first central column and the first base, and the depth of the first groove is equal to the thickness of the side column; The second groove is disposed in the center of the second central column and the second base, and the depth of the second groove is equal to the thickness of the side column.

[0008] In the transformer composite magnetic core described in this utility model, the widths of the first side post, the second side post, the third side post, and the fourth side post are equal. The width of the first groove is between one-seventh and one-sixth of the width of the side post; the width of the second groove is also between one-seventh and one-sixth of the width of the side post.

[0009] In the transformer composite magnetic core described in this utility model, the first central column and the second central column are elliptical cylindrical; The contact surfaces of the first side post and the third side post are U-shaped, and the contact surfaces of the second side post and the fourth side post are U-shaped.

[0010] In the transformer composite magnetic core of this utility model, the side of the first side post adjacent to the first middle post is recessed to form a first arc surface that matches the shape of the first middle post, and the side of the second side post adjacent to the first middle post is recessed to form a second arc surface that matches the shape of the first middle post. The first arc surface and the second arc surface respectively form gaps with the first middle post. The side of the third side post adjacent to the second central post is concave to form a third arc surface that matches the shape of the second central post. The side of the fourth side post adjacent to the second central post is concave to form a fourth arc surface that matches the shape of the second central post. The third arc surface and the fourth arc surface respectively form gaps with the second central post.

[0011] In the transformer composite magnetic core of this utility model, the first base is located between the first side post and the second side post, with the first side post recessed to form a first V-shaped region; the first base is located between the first side post and the second side post, with the second side post protruding to form a first arc-shaped region, and the first groove penetrates the first arc-shaped region. The second base is located between the third and fourth side posts. The first side of the second base is recessed to form a second V-shaped region, and the second side of the second base is located between the third and fourth side posts to form a second arc-shaped region. The second groove extends through the second arc-shaped region.

[0012] The transformer composite magnetic core implementing this utility model includes a first magnetic core unit and a second magnetic core unit; the first magnetic core unit and the second magnetic core unit are bonded together with adhesive; the first magnetic core unit includes a first central post located in its middle, and the second magnetic core unit includes a second central post located in its middle; a first groove is formed on the first central post, and a second groove is formed on the second central post; the first groove and the second groove extend in a straight line along the same plane to form a heat dissipation channel extending along the length direction of the transformer composite magnetic core. This utility model, by using two magnetic core units bonded together with adhesive to form a composite magnetic core, achieves lower energy conversion losses and higher efficiency compared to a single magnetic core, and the heat dissipation efficiency is effectively improved by forming a heat dissipation channel extending along the length direction of the transformer composite magnetic core through the grooves. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings: Figure 1 This is an exploded view of a preferred embodiment of the transformer composite magnetic core of this utility model; Figure 2 This is an assembly diagram of a preferred embodiment of the transformer composite magnetic core of this utility model; Figure 3 This is a first-angle perspective view of a preferred embodiment of the core unit of the transformer composite magnetic core of this utility model; Figure 4 This is a second perspective view of a preferred embodiment of the core unit of the transformer composite magnetic core of this utility model. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0015] Figure 1 This is an exploded view of a preferred embodiment of the transformer composite magnetic core of this utility model. (See diagram below.) Figure 1As shown, the transformer core assembly of this invention includes a first core unit 100 and a second core unit 200; the first core unit 100 and the second core unit 200 are bonded together with adhesive; the first core unit 100 includes a first central post 110 located in its middle portion, and the second core unit 200 includes a second central post 210 located in its middle portion; a first groove 310 is formed on the first central post 110, and a second groove 320 is formed on the second central post 210; the first groove 310 and the second groove 320 extend linearly along the same plane to form a line along the length direction L of the transformer core assembly (see...). Figure 2 The extended heat dissipation airflow channel. This utility model uses two magnetic core units bonded together with adhesive to form a combined magnetic core. Compared with a single magnetic core, the energy conversion loss is smaller and the efficiency is higher. Furthermore, by setting grooves to form a heat dissipation airflow channel extending along the length of the transformer combined magnetic core, the heat dissipation efficiency can be effectively improved.

[0016] Figure 2 This is an assembly diagram of a preferred embodiment of the transformer composite magnetic core of this utility model; Figure 3 This is a first-angle perspective view of a preferred embodiment of the core unit of the transformer composite magnetic core of this utility model; Figure 4 This is a second perspective view of a preferred embodiment of the core unit of the transformer composite magnetic core of this utility model.

[0017] In a preferred embodiment of this utility model, such as Figures 2-4 As shown, the first magnetic core unit 100 and the second magnetic core unit 200 are identical magnetic core units. The first magnetic core unit 100 further includes a first base 120, a first side post 130 extending vertically from a first side of the first base 120, and a second side post 140 extending vertically from a second side of the first base 120; a first central post 110 extending vertically from the center of the first base 120; and a first groove 310 extending from the first central post 110 toward and through the first base 120.

[0018] The second magnetic core unit 200 includes a second base 220, a third side post 230 extending vertically from a first side of the second base 220, and a fourth side post 240 extending vertically from a second side of the second base 220; a second central post 210 extending vertically from the center of the second base 220; and a second groove 320 extending from the second central post 210 toward and through the second base 220. The first central post 110 is bonded to the second central post 210 with adhesive, the first side post 130 is bonded to the third side post 230 with adhesive, and the second side post 140 is bonded to the fourth side post 240 with adhesive.

[0019] The first side post 130, the second side post 140, the third side post 230, and the fourth side post 240 have equal thicknesses; the first groove 310 is located at the center of the first central post 110 and the first base 120, and the depth of the first groove 310 is equal to the thickness of the side posts (i.e., the first side post 130, the second side post 140, the third side post 230, and the fourth side post 240); the second groove 320 is located at the center of the second central post 210 and the second base 220, and the depth of the second groove 320 is equal to the thickness of the side posts (i.e., the first side post 130, the second side post 140, the third side post 230, and the fourth side post 240). The widths of the first side post 130, the second side post 140, the third side post 230, and the fourth side post 240 are equal; the width of the first groove 310 ranges from one-seventh to one-sixth of the width of the side post; the width of the second groove 320 also ranges from one-seventh to one-sixth of the width of the side post. That is, the first groove 310 and the second groove 320 are elongated.

[0020] In the preferred embodiment of this utility model, such as Figures 2-4As shown, the first central column 110 and the second central column 210 are elliptical cylinders; the contact surface between the first side column 130 and the third side column 230 is U-shaped, and the contact surface between the second side column 140 and the fourth side column 240 is U-shaped; the side of the first side column 130 adjacent to the first central column 110 is concave to form a first arc surface 131 matching the shape of the first central column 110, and the side of the second side column 140 adjacent to the first central column 110 is concave to form a second arc surface 131 matching the shape of the first central column 110. 41. The first arc surface 131 and the second arc surface 141 respectively form gaps with the first central column 110; the side of the third side column 230 adjacent to the second central column 210 is concave to form a third arc surface 231 matching the shape of the second central column 210, and the side of the fourth side column 240 adjacent to the second central column 210 is concave to form a fourth arc surface 241 matching the shape of the second central column 210. The third arc surface 231 and the fourth arc surface 241 respectively form gaps with the second central column 210. In this preferred embodiment, the first arc surface 131 and the second arc surface 141 respectively form gaps with the first central column 120, which facilitates winding installation and ventilation. The third arc surface 231 and the fourth arc surface 241 respectively form gaps with the second central column 220, which facilitates winding installation and ventilation.

[0021] In the preferred embodiment of this utility model, such as Figures 2-4 As shown, the first base 120 has a first V-shaped region 121 formed by an inwardly recessed first side edge between the first side post 130 and the second side post 140; the first base 120 has a second arc-shaped region 122 formed by an outwardly protruding second side edge between the first side post 130 and the second side post 140, and the first groove 310 penetrates the first arc-shaped region 122; the second base 220 has a second V-shaped region 221 formed by an inwardly recessed first side edge between the third side post 230 and the fourth side post 240, and a second arc-shaped region 222 formed by an outwardly protruding second side edge between the third side post 230 and the fourth side post 240, and the second groove 320 penetrates the second arc-shaped region 222. The design of the first V-shaped region 111 and the second V-shaped region 112 can further facilitate heat dissipation; the first arc-shaped region 122 and the second arc-shaped region 222 can more easily accommodate the first groove and the second groove.

[0022] In the preferred embodiment of this utility model, such as Figures 2-4As shown, the transformer core assembly can be mounted on a side plate, preferably on the side where the first V-shaped region 121 and the second V-shaped region 221 are located, thereby avoiding interference with the heat dissipation channel. The side plate's preferred mounting on the side where the first V-shaped region 121 and the second V-shaped region 221 are located allows for vertical mounting of the transformer core assembly, further improving heat dissipation.

[0023] The transformer core of this invention is formed by bonding the first central column 110 and the second central column 210 together with adhesive, bonding the first side column 130 and the third side column 230 together with adhesive, and bonding the second side column 140 and the fourth side column 240 together with adhesive. This reconstructs the core structure of the traditional DC transformer, adopts a vertical magnet bonding and combination connection method, optimizes the magnetic circuit, and compared with a single magnetic core, has less loss during energy conversion, higher efficiency, and smaller size.

[0024] The transformer core of this invention features grooves 310 and 320 at the center of the first central column 110 and the first base 120, and at the center of the second central column 210 and the second base 220 (i.e., the bottom of the transformer core). These grooves are elongated and arranged along the direction of the transformer core. The depth of the groove is equal to the width of the side column, and the width is one-sixth to one-seventh of the side column's width. The design of the bottom grooves increases the contact area with air, allowing for more efficient airflow through the grooves and removing more heat when using air cooling. The V-shaped design of the first base 110 and the second base 210, as well as the arc-shaped design of the side columns, further facilitates installation and ventilation. The arc-shaped areas of the first base 110 and the second base 210 extend the heat dissipation channel, further enhancing ventilation and heat dissipation.

[0025] In implementing the transformer composite magnetic core of this utility model, high-performance special adhesive is first applied to the mating surfaces of the first magnetic core unit 100 and the second magnetic core unit 200. The adhesive is applied evenly to cover the connecting surfaces, ensuring a stable and airtight bond. Then, bottom-to-bottom and side-to-side bonding is completed, forming a stable overall structure. Simultaneously, during processing, the inner walls of the air ducts and independent grooves are finely processed. Grinding and polishing processes ensure a smooth, burr-free surface, allowing for smooth airflow and further improving heat dissipation.

[0026] 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.

[0027] 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 transformer composite magnetic core, characterized in that, The transformer assembly includes a first magnetic core unit and a second magnetic core unit. The first magnetic core unit includes a first central column located in its middle portion, and the second magnetic core unit includes a second central column located in its middle portion. The first central column and the second central column are attached to each other. The first magnetic core unit and the second magnetic core unit are attached to each other and bonded together with adhesive. A first groove is formed on the first central column, and a second groove is formed on the second central column. The first groove and the second groove extend in a straight line along the same plane to form a heat dissipation duct extending along the length direction of the transformer assembly core.

2. The transformer composite magnetic core according to claim 1, characterized in that, The first magnetic core unit further includes a first base, a first side post extending vertically from a first side of the first base, and a second side post extending vertically from a second side of the first base; the first central post extends vertically from the middle of the first base. The first groove extends from the first central column toward the first base and passes through the first base; The second magnetic core unit includes a second base, a third side post extending vertically from a first side of the second base, and a fourth side post extending vertically from a second side of the second base; the second central post extends vertically from the center of the second base; and the second groove extends from the second central post toward the second base and penetrates the second base.

3. The transformer composite magnetic core according to claim 2, characterized in that, The first central column and the second central column are attached together and bonded with adhesive, the first side column and the third side column are attached together and bonded with adhesive, and the second side column and the fourth side column are attached together and bonded with adhesive.

4. The transformer composite magnetic core according to claim 3, characterized in that, The first side post, the second side post, the third side post, and the fourth side post have the same thickness; The first groove is located at the center of the first central column and the first base, and the depth of the first groove is equal to the thickness of the side column; The second groove is disposed in the center of the second central column and the second base, and the depth of the second groove is equal to the thickness of the side column.

5. The transformer composite magnetic core according to claim 4, characterized in that, The widths of the first side post, the second side post, the third side post, and the fourth side post are equal. The width of the first groove is between one-seventh and one-sixth of the width of the side post; the width of the second groove is also between one-seventh and one-sixth of the width of the side post.

6. The transformer composite magnetic core according to any one of claims 3 to 5, characterized in that, The first central column and the second central column are elliptical cylinders; The contact surfaces of the first side post and the third side post are U-shaped, and the contact surfaces of the second side post and the fourth side post are U-shaped.

7. The transformer composite magnetic core according to claim 6, characterized in that, The side of the first side post adjacent to the first central post is concave to form a first arc surface that matches the shape of the first central post, and the side of the second side post adjacent to the first central post is concave to form a second arc surface that matches the shape of the first central post. The first arc surface and the second arc surface respectively form gaps with the first central post. The side of the third side post adjacent to the second central post is concave to form a third arc surface that matches the shape of the second central post. The side of the fourth side post adjacent to the second central post is concave to form a fourth arc surface that matches the shape of the second central post. The third arc surface and the fourth arc surface respectively form gaps with the second central post.

8. The transformer composite magnetic core according to any one of claims 3 to 5, characterized in that, The first base has a first V-shaped region formed by an inwardly recessed first side edge located between the first side post and the second side post; the first base has a first arc-shaped region formed by an outwardly protruding second side edge located between the first side post and the second side post, and the first groove passes through the first arc-shaped region; The second base is located between the third and fourth side posts. The first side of the second base is recessed to form a second V-shaped region, and the second side of the second base is located between the third and fourth side posts to form a second arc-shaped region. The second groove extends through the second arc-shaped region.

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