Integrated LLC transformer
By employing a double-layer frame structure in the LLC transformer and incorporating heat dissipation holes and channels, the problem of slow heat dissipation was solved, thereby improving the transformer's efficiency.
Patent Information
- Application Number
- CN202423274747.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2034-12-27
AI Technical Summary
Existing LLC transformers have slow heat dissipation, high copper wire current density, and large size, resulting in low efficiency, poor heat dissipation of the magnetic core, and increased heating temperature.
The design employs a double-layer frame with an internal heat dissipation structure, comprising a first and a second frame connected by an isolation section. The frame is equipped with heat dissipation holes and channels to increase the heat dissipation area.
This improves the heat dissipation of the transformer, reduces the temperature rise of the magnetic core and winding coils, and enhances the transformer's operating efficiency.
Smart Images
Figure CN223941622U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of transformer technology, specifically relating to an integrated LLC transformer. Background Technology
[0002] The statements in this section are merely background information related to this utility model and do not necessarily constitute prior art.
[0003] like Figure 1 and Figure 2 The existing LLC transformer shown includes a magnetic core, a base, a frame, and windings. The windings are wound on the frame, the magnetic core is mounted on the frame, and the frame is set on the base. The frame used is a single-layer frame tightly assembled with the magnetic core, which results in slow heat dissipation. The copper wire design has a relatively high current density, uses a lot of copper, and has a large volume. When assembling the transformer magnetic core, the central column is tightly wrapped by other materials, making it difficult for the magnetic core heat to dissipate, causing the temperature to rise, which in turn leads to low transformer efficiency. Utility Model Content
[0004] To address the aforementioned issues, this invention proposes an integrated LLC transformer, which employs a double-layer frame with an internal heat dissipation structure and a central hole structure. The winding portion of the frame is equipped with a heat dissipation structure, thereby increasing the transformer's heat dissipation area and improving its operating efficiency.
[0005] According to some embodiments, the present invention provides an integrated LLC transformer, employing the following technical solution:
[0006] An integrated LLC transformer includes a core structure, a base, a frame structure, and a winding structure. The winding structure and core structure are both mounted on the frame structure, which is fixed to the base. The frame structure includes a first frame and a second frame arranged symmetrically, and an isolation portion for connecting the first frame and the second frame. Both the first frame and the second frame are hollow tubular structures. A plurality of second heat dissipation holes are radially formed on the tube walls of both the first and second frames. A plurality of heat dissipation channels are axially formed on the tube walls of both the first and second frames. A plurality of first heat dissipation holes are provided on the isolation portion.
[0007] As a further technical limitation, the winding structure includes a first winding coil wound on the first frame and a second winding coil wound on the second frame; the base has a base through hole, and the ends of the first winding coil and the second winding coil both pass through the base through hole.
[0008] Furthermore, both ends of the first skeleton tube wall and the second skeleton tube wall in the axial direction are provided with limiting portions, and a support block is provided on the side of the limiting portion away from the isolation portion, and the support block is fixed on the support block fixing seat.
[0009] Furthermore, a recess for defining the position of the magnetic core structure is provided on the outer side of the limiting portion on the side of the support block in the circumferential direction; the outlet of part of the heat dissipation channel is provided on the recess.
[0010] Furthermore, the isolation portion is disposed between the limiting portion on the first frame away from the support block and the limiting portion on the second frame away from the support block.
[0011] As a further technical limitation, the magnetic core structure includes a first magnetic core and a second magnetic core, wherein a first magnetic core central column is disposed on the first magnetic core and a second magnetic core central column is disposed on the second magnetic core.
[0012] Furthermore, the first magnetic core pillar is disposed within the hollow tubular structure of the first skeleton, and the second magnetic core pillar is disposed within the hollow tubular structure of the second skeleton.
[0013] As a further technical limitation, the second heat dissipation holes are evenly distributed on the first skeleton tube wall and the second skeleton tube wall, and the size of the plurality of second heat dissipation holes is the same.
[0014] As a further technical limitation, the plurality of first heat dissipation holes are arranged on the same circumference, and the plurality of first heat dissipation holes are all the same size.
[0015] As a further technical limitation, the heat dissipation channel provided on the first frame is connected to the heat dissipation channel provided on the second frame.
[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0017] This invention effectively solves the problem of heat dissipation in the core structure and winding structure of a transformer by setting up a heat dissipation channel including a first heat dissipation hole, a second heat dissipation hole and a heat dissipation channel. While reducing the temperature rise of the core structure and winding coil, it improves the working efficiency of the transformer. Attached Figure Description
[0018] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.
[0019] Figure 1 This is a schematic diagram of a traditional LLC transformer.
[0020] Figure 2 This is a schematic diagram of a traditional LLC transformer with a coil structure in its frame.
[0021] Figure 3 This is an exploded structural diagram of the integrated LLC transformer in an embodiment of this utility model;
[0022] Figure 4 This is a schematic diagram of an integrated LLC transformer in an embodiment of the present utility model;
[0023] Figure 5 This is a schematic diagram of the base structure in one embodiment of the present utility model;
[0024] Figure 6 This is a schematic diagram of the structure of the first magnetic core in an embodiment of the present invention;
[0025] Figure 7 This is a schematic diagram of the structure of the second magnetic core in an embodiment of the present invention;
[0026] Figure 8 This is a schematic diagram of the skeleton structure in one embodiment of the present utility model;
[0027] Figure 9 This is a schematic diagram of the skeleton structure in one embodiment of the present utility model;
[0028] Figure 10 This is a schematic diagram of the skeleton structure in one embodiment of the present utility model;
[0029] Figure 11 This is a schematic diagram of a skeleton structure with a winding structure in an embodiment of the present utility model.
[0030] Figure 12 This is a schematic diagram of a skeleton structure with a winding structure in an embodiment of the present utility model.
[0031] Figure 13 This is a schematic diagram of a skeleton structure with a winding structure in an embodiment of the present utility model.
[0032] Figure 14 This is a schematic diagram of a skeleton structure with a winding structure in an embodiment of the present utility model.
[0033] Among them, 1. First magnetic core; 2. Second magnetic core; 3. Frame; 4. Winding coil; 5. Second heat dissipation hole; 6. Base; 7. Base through hole; 8. Support block fixing seat; 9. First magnetic core center column; 10. Second magnetic core center column; 11. First frame; 12. Second frame; 13. Isolation part; 14. Limiting part; 15. Heat dissipation channel; 16. First heat dissipation hole; 17. First winding coil; 18. Second winding coil; 19. Support block; 20. Recess. Detailed Implementation
[0034] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0035] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.
[0036] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0037] In this utility model, terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of the structural relationship between the various components or elements of this utility model and do not specifically refer to any component or element in this utility model. They should not be construed as limiting this utility model.
[0038] In this utility model, terms such as "fixed connection," "connected," and "joined" should be interpreted broadly, indicating a fixed connection, an integral connection, or a detachable connection; a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this utility model can be determined according to the specific circumstances, and should not be construed as a limitation of this utility model.
[0039] Example
[0040] This utility model embodiment introduces an integrated LLC transformer.
[0041] like Figure 3 and Figure 4An integrated LLC transformer is shown, comprising a magnetic core structure, a base structure, a frame structure, and a winding structure. Both the winding structure and the magnetic core structure are mounted on the frame structure, which is fixed to the base structure. Specifically, it includes a first magnetic core 1, a second magnetic core 2, a frame 3, a winding coil 4, a second heat dissipation hole 5, a base 6, a base through hole 7, a support block fixing seat 8, a first magnetic core center column 9, a second magnetic core center column 10, a first frame 11, a second frame 12, an isolation part 13, a limiting part 14, a heat dissipation channel 15, a first heat dissipation hole 16, a first winding coil 17, a second winding coil 18, a support block 19, and a recess 20.
[0042] The following is a detailed description of this embodiment, in conjunction with the structural diagrams of each component.
[0043] This embodiment uses, as follows: Figure 5 The base structure shown has four base through holes 7 and four support block fixing seats 8 on the base 6; wherein the support block fixing seats 8 are located outside the base through holes 7.
[0044] like Figure 6 and Figure 7 As shown, the magnetic core structure in this embodiment includes a first magnetic core 1 and a second magnetic core 2, wherein a first magnetic core post 9 and a second magnetic core post 10 are respectively disposed in the middle of the first magnetic core 1 and the second magnetic core 2; the size of the first magnetic core post 1 and the second magnetic core post 2 are matched; the size of the first magnetic core post 9 and the second magnetic core post 10 are matched.
[0045] like Figure 8 , Figure 9 and Figure 10 As shown, the skeleton structure in this embodiment adopts a double-layer skeleton structure, which includes a first skeleton 11, a second skeleton 12 and an isolation part 13 connecting the first skeleton 11 and the second skeleton 12; wherein, the first skeleton 11 and the second skeleton are arranged in a symmetrical structure; both the first skeleton 11 and the second skeleton 12 are tubular structures with a central hole.
[0046] To enhance the heat dissipation of the transformer, this embodiment adds a heat dissipation structure to the frame structure, including a first heat dissipation hole 16, a second heat dissipation hole 5, and a heat dissipation channel 15; specifically:
[0047] The first heat dissipation hole 16 is provided on the isolation part 13, and there are multiple first heat dissipation holes 16, all of which are located on the same circumference;
[0048] The second heat dissipation hole 5 is disposed in the radial direction of the tube wall of the first frame 11 and the second frame 12; the second heat dissipation hole 5 is evenly distributed on the tube wall of the first frame 11 and the tube wall of the second frame 12.
[0049] The heat dissipation channel 15 is disposed in the axial direction of the pipe wall of the first frame 11 and the second frame 12; and the heat dissipation channel 15 disposed on the first frame 11 is in communication with the heat dissipation channel 15 disposed on the second frame 12.
[0050] It should be noted that in this embodiment, the size of the first heat dissipation hole 16 is the same, and the size of the second heat dissipation hole 5 is the same.
[0051] like Figure 8 As shown, both ends of the first frame 11 pipe wall and the second frame 12 pipe wall in the axial direction are provided with limiting parts 14. A support block 19 is provided on the side of the limiting part 14 away from the isolation part 13, and the support block 19 is fixed on the support block fixing seat 8. The isolation part 13 is located between the limiting part 14 on the first frame 11 away from the support block 19 and the limiting part 14 on the second frame 12 away from the support block 19.
[0052] It should be noted that a recess 20 for defining the position of the magnetic core structure is provided on the outer side of the limiting part 14 on the side of the support block 19 in the circumferential direction; the outlet of part of the heat dissipation channel 15 is provided on the recess 20.
[0053] It should be noted that the first magnetic core column 9 is disposed in the hollow tubular structure of the first frame 11, and the second magnetic core column 10 is disposed in the hollow tubular structure of the second frame 12.
[0054] like Figure 11 , Figure 12 , Figure 13 and Figure 14 As shown, in this embodiment, the winding structure is wound on the frame structure, that is, the first winding coil 17 is wound on the first frame 11 and the second winding coil 18 is wound on the second frame 12. During use, the core structure and winding structure are cooled through the first heat dissipation hole 16, the second heat dissipation hole 5 and the heat dissipation channel 15, so that the transformer can dissipate heat quickly during use. The second heat dissipation hole 5 increases the heat dissipation surface area of the transformer and improves the heat dissipation effect of the transformer.
[0055] It should be noted that the support block fixing seat 8 is used to fix the support block 19 on the base 6; the base through hole 7 is used to pass through the first winding coil 17 and the second winding coil 18, and the ends of the four winding coils pass through the base through hole 7 to facilitate the connection of the overall transformer leads.
[0056] This invention effectively solves the problem of heat dissipation in the core structure and winding structure of a transformer by setting a heat dissipation structure including a first heat dissipation hole 16, a second heat dissipation hole 5 and a heat dissipation channel 15. While reducing the temperature rise of the core structure and winding coil, it improves the working efficiency of the transformer.
[0057] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
[0058] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solution of the present utility model are still within the scope of protection of the present utility model.
Claims
1. An integrated LLC transformer, comprising a core structure, a base, a frame structure, and a winding structure, wherein, Both the winding structure and the magnetic core structure are mounted on the frame structure, which is fixed to the base. The frame structure comprises a first frame and a second frame arranged symmetrically, and an isolation portion for connecting the first frame and the second frame. Both the first frame and the second frame are hollow tubular structures. The tube walls of both the first frame and the second frame have a plurality of second heat dissipation holes radially provided. The tube walls of both the first frame and the second frame have a plurality of heat dissipation channels axially provided. The isolation portion has a plurality of first heat dissipation holes.
2. An integrated LLC transformer as described in claim 1, characterized in that, The winding structure includes a first winding coil wound on the first frame and a second winding coil wound on the second frame; the base has a base through hole, and the ends of the first winding coil and the second winding coil both pass through the base through hole.
3. An integrated LLC transformer as described in claim 2, characterized in that, Both ends of the first skeleton tube wall and the second skeleton tube wall in the axial direction are provided with limiting portions, and a support block is provided on the side of the limiting portion away from the isolation portion, and the support block is fixed on the support block fixing seat.
4. An integrated LLC transformer as described in claim 3, characterized in that, A recess is provided on the outer side of the limiting part on the side of the support block in the circumferential direction to define the position of the magnetic core structure; the outlet of part of the heat dissipation channel is provided on the recess.
5. An integrated LLC transformer as described in claim 3, characterized in that, The isolation section is disposed between the limiting section on the first frame away from the support block and the limiting section on the second frame away from the support block.
6. An integrated LLC transformer as described in claim 1, characterized in that, The magnetic core structure includes a first magnetic core and a second magnetic core, wherein a first magnetic core central column is disposed on the first magnetic core and a second magnetic core central column is disposed on the second magnetic core.
7. An integrated LLC transformer as described in claim 6, characterized in that, The first magnetic core column is disposed inside the hollow tubular structure of the first skeleton, and the second magnetic core column is disposed inside the hollow tubular structure of the second skeleton.
8. An integrated LLC transformer as described in claim 1, characterized in that, The second heat dissipation holes are evenly distributed on the first skeleton tube wall and the second skeleton tube wall, and the size of the plurality of second heat dissipation holes is the same.
9. An integrated LLC transformer as described in claim 1, characterized in that, The plurality of first heat dissipation holes are arranged on the same circumference, and the plurality of first heat dissipation holes are all the same size.
10. An integrated LLC transformer as described in claim 1, characterized in that, The heat dissipation channel on the first frame is connected to the heat dissipation channel on the second frame.