A transformer assembly
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUNGROW CHARGING TECH CO LTD
- Filing Date
- 2025-07-28
- Publication Date
- 2026-08-07
AI Technical Summary
[0003]变压器通常被灌封至散热器中，由于磁芯中柱被包裹不易散热，但是中柱的散热能力影响变压器的性能，因此，如何提升磁芯中柱的散热能力，是本领域的一个难题
[0004]本申请的目的是提供一种变压器组件，能够提升变压器的磁芯中柱的散热能力，提升变压器的性能和稳定性。
Smart Images
Figure CN224609697U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of transformer technology, specifically to a transformer assembly. Background Technology
[0002] As the core component of power conversion, transformers are widely used in power systems, electronic equipment and other fields. The magnetic core is an indispensable component of the transformer, which can optimize electrical performance and efficiency and ensure stable operation of the transformer. A transformer is usually composed of a magnetic core and coils wound on the magnetic core. The magnetic core includes a center column. As the power processed by the magnetic core increases, the heat generated by the center column of the magnetic core due to hysteresis loss and eddy current loss also increases. Therefore, the requirements for the heat dissipation capacity of the center column of the magnetic core are also increasing.
[0003] Transformers are typically encapsulated in heat sinks. Since the core column is encased, it is difficult to dissipate heat. However, the heat dissipation capacity of the core column affects the performance of the transformer. Therefore, how to improve the heat dissipation capacity of the core column is a difficult problem in this field. Utility Model Content
[0004] The purpose of this application is to provide a transformer assembly that can improve the heat dissipation capacity of the core column of the transformer, thereby improving the performance and stability of the transformer.
[0005] To address the aforementioned technical problems, this application provides a transformer assembly, including a housing and a transformer; one side wall of the housing is provided with a heat dissipation protrusion, and the other side wall of the housing is provided with a first mounting groove, the transformer being mounted in the first mounting groove; the transformer includes two magnetic cores, each magnetic core including a top cover and two central columns arranged side by side along a first direction, the central columns of the two magnetic cores being arranged opposite to each other and fixed, and a coil being wound around the oppositely arranged central columns; the dimension of the top cover in a second direction is larger than the dimension of the central column in a second direction, and the first direction, the second direction, and the axial direction of the central column are perpendicular to each other.
[0006] After the transformer is placed in the first mounting slot, the top covers of the two magnetic cores are respectively positioned opposite the two sides of the slot. The heat generated by the magnetic cores can be transferred to the slot walls through the top covers and dissipated through the heat dissipation protrusions. The heat dissipation protrusions facilitate the timely dissipation of heat generated by the transformer during operation, resulting in better heat dissipation.
[0007] The top cover is larger in size in the second direction than the middle column in the second direction. The top cover extends outward relative to the middle column along the second direction, and the first direction, the second direction, and the axis of the middle column are perpendicular to each other. This arrangement increases the area of the top cover in the direction perpendicular to the axis of the middle column, thereby increasing the contact area (i.e., heat dissipation area) between the top cover and the wall of the first mounting groove, and improving the heat dissipation capacity of the top cover. Since the end of the middle column is connected to the top cover, the middle column can dissipate heat through the top cover. The improved heat dissipation effect of the top cover can improve the heat dissipation effect of the middle column.
[0008] Furthermore, with the same effective cross-sectional area of the magnetic core, the larger the heat dissipation area of the top cover and the smaller its thickness, the smaller the gap between the central column and the wall of the first mounting groove, thus reducing the heat conduction path of the central column. This facilitates the transfer of heat from the central column to the wall of the first mounting groove, and the dissipation of heat through the heat dissipation protrusions, thereby improving the heat dissipation effect of the central column.
[0009] Optionally, the top cover extends to both sides relative to the central column along the second direction.
[0010] Optionally, along the second direction, the distance between the center post and the edge of the top cover is in the range of 5mm-10mm.
[0011] Optionally, the cross-section of the central column is a racetrack-shaped structure, and the length direction of the racetrack-shaped structure is arranged along the second direction.
[0012] Optionally, a U-shaped structure is formed between the two magnetic cores, and the axis of the U-shaped structure is set along the depth direction of the first mounting groove.
[0013] Optionally, the top cover has a dimension in the first direction ranging from 50mm to 65mm, a dimension in the second direction ranging from 45mm to 55mm, and a thickness in the range of 5mm to 15mm.
[0014] Optionally, the housing is provided with at least two first mounting slots, and a heat dissipation baffle is provided between two adjacent first mounting slots.
[0015] Optionally, the heat dissipation partition is further provided with heat dissipation protrusions at both ends. The heat dissipation protrusions extend along the depth direction of the first mounting groove and protrude from the heat dissipation partition toward the side of the first mounting groove.
[0016] Optionally, the top of the heat dissipation protrusion is further provided with a support member, and the wiring terminal of the coil end is provided on the support member.
[0017] Optionally, the transformer assembly further includes an inductor and a capacitor plate, and the housing is further provided with a second mounting slot and a third mounting slot, wherein the inductor is mounted in the second mounting slot and the capacitor plate is mounted in the third mounting slot. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of the transformer assembly provided in the embodiments of this application;
[0019] Figure 2 yes Figure 1 A schematic diagram of the structure of a medium-sized transformer;
[0020] Figure 3 This is a schematic diagram of the transformer structure when the coil is removed;
[0021] Figure 4 This is a schematic diagram of the magnetic core structure;
[0022] Figure 5 yes Figure 4 Top view;
[0023] Figure 6 yes Figure 4 The left view;
[0024] Figure 7 yes Figure 4 The front view.
[0025] Appendix Figures 1-7 The reference numerals in the attached figures are explained as follows:
[0026] 1 Transformer, 11 Magnetic Core, 111 Top Cover, 112 Center Column, 12 Coil;
[0027] 2. Housing, 21. First mounting slot, 22. Second mounting slot, 23. Third mounting slot, 24. Heat dissipation protrusion, 25. Heat dissipation baffle, 26. Heat dissipation protrusion;
[0028] 3. Inductors;
[0029] 4 capacitor boards;
[0030] 5. Support components. Detailed Implementation
[0031] To enable those skilled in the art to better understand the technical solutions of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0032] This application provides a transformer assembly, such as... Figure 1As shown, the transformer assembly includes a housing 2 and a transformer 1. One side wall of the housing 2 is provided with a heat dissipation protrusion 24, and the other side wall of the housing 2 is provided with a first mounting groove 21. The transformer 1 is installed in the first mounting groove 21. Thermal conductive adhesive can be filled into the gap between the first mounting groove 21 and the transformer 1. Heat conduction is achieved between the groove wall of the first mounting groove 21 and the transformer 1, and the heat is dissipated through the heat dissipation protrusion 24, thereby dissipating heat from the transformer 1.
[0033] The structure of transformer 1 is as follows Figure 2 and Figure 3 As shown, it includes two magnetic cores 11, and the structure of the magnetic core 11 is as follows. Figure 4 and Figure 5 As shown, the magnetic core 11 includes a top cover 111 and two central pillars 112. The two central pillars 112 are arranged side by side along a first direction, and the ends of the central pillars 112 are fixed to the top cover 111. The two central pillars 112 and the top cover 111 together form a roughly U-shaped structure. The central pillars 112 of the two magnetic cores 11 are arranged opposite each other, with a gap between them and fixed. That is, the openings of the two U-shaped structures are arranged opposite each other and form a square structure. The central pillars 112 arranged opposite each other are wrapped with wire coils 12.
[0034] After the transformer 1 is placed in the first mounting slot 21, the top covers 111 of the two magnetic cores 11 are respectively set on the opposite sides of the slot wall of the first mounting slot 21. The heat generated by the magnetic cores 11 can be transferred to the slot wall through the top covers 111 and dissipated through the heat dissipation protrusions 24. The heat dissipation protrusions 24 facilitate the timely dissipation of the heat generated by the transformer 1 during operation, resulting in better heat dissipation.
[0035] The top cover 111 is larger in the second direction than the center post 112, such as Figure 5 As shown, the top cover 111 extends outward relative to the central column 112 along the second direction, and the first direction, the second direction, and the axial direction of the central column 112 are perpendicular to each other. This arrangement increases the area of the top cover 111 in the direction perpendicular to the axial direction of the central column 112, thereby increasing the contact area (i.e., heat dissipation area) between the top cover 111 and the groove wall of the first mounting groove 21, and improving the heat dissipation capacity of the top cover 111. Since the end of the central column 112 is connected to the top cover 111, the central column 112 can dissipate heat through the top cover 111. After the heat dissipation effect of the top cover 111 is improved, the heat dissipation effect of the central column 112 can be improved.
[0036] Furthermore, with the same effective cross-sectional area of the magnetic core 11, the larger the heat dissipation area of the top cover 111 and the smaller its thickness, the smaller the gap between the central column 112 and the groove wall of the first mounting groove 21 can be reduced, thus reducing the heat conduction path of the central column 112. This facilitates the transfer of heat from the central column 112 to the groove wall of the first mounting groove 21, and the heat is dissipated through the heat dissipation protrusion 24, thereby improving the heat dissipation effect of the central column 112.
[0037] In this embodiment, the housing 2 can be made of aluminum, which has good heat dissipation performance and low cost, making it economical. The heat dissipation protrusions 24 can be sheet-like, dot-like, columnar, tooth-like, corrugated, or other structures, and no specific limitation is made here.
[0038] like Figure 5 As shown, the top cover 111 has a square structure. Of course, in this embodiment, the shape of the top cover 111 is not limited. It can also be set as a circular or trapezoidal structure. When the top cover 111 is set as a square structure, the heat dissipation area of the top cover 111 can be further increased, and the heat dissipation performance can be improved.
[0039] The distance between the edge of the top cover 111 and the wall of the first mounting groove 21 is in the range of 1mm-3mm, such as 1mm, 2mm, 3mm, etc. Of course, the distance between the edge of the top cover 111 and the wall of the first mounting groove 21 can also be set to 0.5mm, 4mm, 5mm, etc. Setting this distance in the range of 1mm-3mm can facilitate the installation of the transformer 1 into the first mounting groove 21, and at the same time, it can also make the top cover 111 have a large heat dissipation area and good heat dissipation effect.
[0040] like Figure 5 and Figure 6 As shown, the top cover 111 has a first dimension L1 along the first direction, which is in the range of 50mm-65mm, such as 50 mm, 55 mm, 58 mm, 60 mm, 65 mm, etc. The top cover 111 has a second dimension L2 along the second direction, which is in the range of 45mm-55mm, such as 45 mm, 50 mm, 55 mm, etc. The thickness D of the top cover 111 is in the range of 5mm-15mm, such as 5 mm, 10 mm, 15 mm, etc.
[0041] In this embodiment, the specific dimensions of the top cover 111 in each direction are not limited and can be set according to the actual situation. The larger the first dimension L1 and the second dimension L2 of the top cover 111, the larger the heat dissipation area (L1*L2) and the smaller the thickness D, which is more conducive to the heat dissipation of the central column 112. However, if the thickness D is too small, it will affect the structural strength of the top cover 111. When the first dimension L1 is set in the range of 50mm-65mm, the second dimension L2 is in the range of 45mm-55mm, and the thickness D is in the range of 5mm-15mm, the top cover 111 can have a large heat dissipation area while having good structural strength.
[0042] The openings of the two magnetic cores 11 face each other, and after the two magnetic cores 11 are assembled, they can form a U-shaped structure between them. The axis of the U-shaped structure is set along the depth direction of the first mounting groove 21. The axis direction of the U-shaped structure is the aforementioned second direction, which is the depth direction of the first mounting groove 21. Of course, the depth direction of the first mounting groove 21 can also be taken as the first direction. In this case, the axis of the U-shaped structure is parallel to the depth direction of the first mounting groove 21.
[0043] When the depth direction of the first mounting groove 21 is taken as the second direction, the two central pillars 112 are placed side by side in the first mounting groove 21 along the length or width direction. After being heated, the thermally conductive adhesive in the first mounting groove 21 can expand outward along the depth direction of the first mounting groove 21, which can alleviate the situation where the magnetic core 11 is subjected to excessive stress due to the expansion of the thermally conductive adhesive, which may cause the magnetic core 11 to crack. This reduces the possibility of equipment failure due to stress on the magnetic core 11 and improves reliability.
[0044] like Figure 5 As shown, the four corners of the top cover 111 are rounded. The radius of the rounded corners is not limited. The rounded corners make assembly easier and make the edges of the top cover 111 smoother, which facilitates manual assembly.
[0045] like Figure 5 As shown, the top cover 111 extends to both sides relative to the central column 112 along the second direction. Of course, the top cover 111 can also extend to one side relative to the central column 112 along the second direction. When the top cover 111 extends to both sides relative to the central column 112 along the second direction, with the same heat dissipation area, the central column 112 is closer to the center of the top cover 111 along the second direction, thus improving the heat transfer effect of the top cover 111 to the central column 112.
[0046] Along the second direction, the distance between the edges of the central pillar 112 and the top cover 111 (e.g.) Figure 6The spacing between the two side edges and the central column 112 (B1 and B2) is within the range of 5mm-10mm. The spacing B1 and B2 can be the same or different. The spacing can be 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, etc. Of course, the spacing can also be set to 3mm, 12mm, etc. When the spacing B1 and B2 are set within the range of 5mm-10mm, the top cover 111 can have a large heat dissipation area while also having a certain thickness, so that the top cover 111 has sufficient structural strength.
[0047] like Figure 5 As shown, the cross-section of the central column 112 is a racetrack-shaped structure, and the length direction of this racetrack-shaped structure is set along the second direction. Of course, in this embodiment, the cross-sectional shape of the central column 112 is not limited; it can also be cylindrical, elliptical, etc. When the cross-sectional area of the central column 112 is set to a racetrack shape, the dimension A2 of the central column 112 in the second direction (e.g., ...) can be... Figure 6 (As shown) is larger than the dimension A1 in the first direction (e.g.) Figure 7 As shown, after the winding is reduced, the overall width of the transformer 1 in the first direction is reduced. During installation, the transformer 1 is installed in the first mounting slot 21. The second direction is along the depth direction of the first mounting slot 21. At this time, the overall height of the transformer 1 is higher and the width is smaller, which can reduce the space occupied by the transformer 1 in the first direction, reduce the size of the first mounting slot 21 in the first direction, and thus reduce the size of the housing 2 in the first direction. This is conducive to realizing the overall miniaturization of the transformer assembly and better structural compactness.
[0048] like Figure 1 As shown, the housing 2 has three first mounting slots 21, which are separated by heat dissipation partitions 25. Of course, the number of first mounting slots 21 is not limited; there can be one, two, four, or more. This is equivalent to the transformers 1 being arranged sequentially at intervals, with adjacent transformers 1 separated by heat dissipation partitions 25. This improves heat dissipation while reducing the space occupied by each transformer 1, thereby reducing the overall volume of the transformer assembly and achieving good compactness.
[0049] like Figure 1 As shown, heat dissipation baffle 25 is provided with heat dissipation protrusions 26 at both ends. The heat dissipation protrusions 26 extend along the depth direction of the first mounting groove 21, and the heat dissipation protrusions 26 protrudes into the inner side of the first mounting groove 21 relative to the heat dissipation baffle 25. This arrangement allows the heat dissipation protrusions 26 to be positioned closer to the side of the central column 112, reducing the heat dissipation path of the central column 112 and facilitating the heat dissipation of the central column 112.
[0050] Furthermore, the heat dissipation protrusion 26 is located on the side of the top cover 111, increasing the mating area between the groove wall of the first mounting groove 21 and the top cover 111. At this time, the heat dissipation wall surface of the top cover 111 includes the side wall surface of the top cover 111 away from the central column 112, the end walls of the top cover 111 on both sides along the first direction, and the side wall surface of the top cover 111 facing the bottom wall of the groove of the first mounting groove 21. The heat dissipation area is larger, which is more conducive to improving the heat dissipation effect of the top cover 111, thereby improving the heat dissipation effect of the central column 112.
[0051] The housing 2, the first mounting groove 21, the heat dissipation baffle 25, and the heat dissipation protrusion 26 are integral die-cast parts. Of course, at least one of the housing 2, the first mounting groove 21, the heat dissipation baffle 25, and the heat dissipation protrusion 26 can be processed separately or set as an independent structure and fixed by other fixing methods (such as welding, bolt connection, bonding, etc.). The integral die-cast parts can simplify the molding process, improve the manufacturing efficiency, and reduce the cost.
[0052] like Figure 1 As shown, the top of the heat dissipation protrusion 26 is also provided with a support member 5, and the end of the coil 12 is located on the support member 5. The end of the coil 12 and the support member 5 can be fixed by bolts, adhesive, snap-fit, etc., so that the wiring terminal at the end of the coil 12 faces away from the first mounting groove 21. After the circuit board is fixed to the housing 2, the circuit board can contact the wiring terminal located on the support member 5 to achieve connection. Due to the supporting effect of the support member 5, a good contact connection between the wiring terminal and the circuit board can be guaranteed, which simplifies the overall assembly process.
[0053] In this embodiment, the structure of the support member 5 is not limited. It can be configured as a bracket composed of multiple rod-shaped structures, or it can be configured to include cylindrical structures, etc. The end of the coil 12 can be fixed to the support member 5, so that the terminal faces away from the first mounting groove 21, and after the circuit board is fixed to the housing 2, the terminal can make stable contact with the circuit board.
[0054] like Figure 1 As shown, the transformer assembly also includes an inductor 3 and a capacitor plate 4. The housing 2 is also provided with a second mounting slot 22 and a third mounting slot 23. The inductor 3 is mounted in the second mounting slot 22, and the gap between the inductor 3 and the second mounting slot 22 is filled with thermally conductive adhesive. The heat generated by the inductor 3 during operation can be transferred to the side wall of the second mounting slot 22 and dissipated through the heat dissipation protrusion 24. The capacitor plate 4 is mounted in the third mounting slot 23, and the gap between the capacitor plate 4 and the third mounting slot 23 is filled with thermally conductive adhesive. The heat generated by the capacitor plate 4 during operation can be transferred to the side wall of the third mounting slot 23 and dissipated through the heat dissipation protrusion 24.
[0055] The number of the second mounting slot 22 and the third mounting slot 23 is not limited and can be set according to the actual situation. The second mounting slot 22 and the third mounting slot 23 are integrally formed on the shell 2 and can be formed by die casting, which simplifies the forming process.
[0056] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0057] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.
[0058] The above are merely preferred embodiments of this application. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.
Claims
1. A transformer assembly, characterized in that, Includes housing (2) and transformer (1); The housing (2) has a heat dissipation protrusion (24) on one side wall and a first mounting groove (21) on the other side wall. The transformer (1) is installed in the first mounting groove (21). The transformer (1) includes two magnetic cores (11), each magnetic core (11) including a top cover (111) and two central columns (112) arranged side by side along a first direction. The central columns (112) of the two magnetic cores (11) are arranged opposite to each other and fixed. The central columns (112) arranged opposite to each other are wrapped with wire coils (12). The top cover (111) is larger in the second direction than the middle column (112) in the second direction, and the first direction, the second direction and the axis of the middle column (112) are perpendicular to each other.
2. The transformer assembly according to claim 1, characterized in that, The top cover (111) extends to both sides in the second direction relative to the central column (112).
3. The transformer assembly according to claim 2, characterized in that, Along the second direction, the distance between the edge of the central column (112) and the top cover (111) is in the range of 5mm-10mm.
4. The transformer assembly according to any one of claims 1-3, characterized in that, The cross-section of the central column (112) is a racetrack-shaped structure, and the length direction of the racetrack-shaped structure is set along the second direction.
5. The transformer assembly according to any one of claims 1-3, characterized in that, A U-shaped structure is formed between the two magnetic cores (11), and the axis of the U-shaped structure is set along the depth direction of the first mounting groove (21).
6. The transformer assembly according to any one of claims 1-3, characterized in that, The top cover (111) has a dimension in the first direction of 50mm-65mm, a dimension in the second direction of 45mm-55mm, and a thickness in the range of 5mm-15mm.
7. The transformer assembly according to any one of claims 1-3, characterized in that, The housing (2) is provided with at least two first mounting slots (21), and a heat dissipation baffle (25) is provided between two adjacent first mounting slots (21).
8. The transformer assembly according to claim 7, characterized in that, The heat dissipation partition (25) is also provided with heat dissipation protrusions (26) at both ends. The heat dissipation protrusions (26) extend along the depth direction of the first mounting groove (21) and the heat dissipation protrusions (26) protrudes to one side of the first mounting groove (21) relative to the heat dissipation partition (25).
9. The transformer assembly according to claim 8, characterized in that, The top of the heat dissipation protrusion (26) is also provided with a support member (5), and the wiring terminal at the end of the coil (12) is provided on the support member (5).
10. The transformer assembly according to any one of claims 1-3, characterized in that, The transformer assembly also includes an inductor (3) and a capacitor plate (4). The housing (2) is also provided with a second mounting slot (22) and a third mounting slot (23). The inductor (3) is mounted in the second mounting slot (22), and the capacitor plate (4) is mounted in the third mounting slot (23).