CN216450482U - High-frequency transformer - Google Patents
High-frequency transformer Download PDFInfo
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- CN216450482U CN216450482U CN202123430168.0U CN202123430168U CN216450482U CN 216450482 U CN216450482 U CN 216450482U CN 202123430168 U CN202123430168 U CN 202123430168U CN 216450482 U CN216450482 U CN 216450482U
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Abstract
The utility model provides a high-frequency transformer, which comprises a magnetic core, a plurality of windings and at least one heat conducting component, wherein the magnetic core is arranged on the magnetic core; wherein: the magnetic core comprises a first central post that passes through the plurality of windings; each heat conducting component comprises a first component and a second component; the first component is adjacent to any one of the plurality of windings; the second component extends to the outside of the high frequency transformer. The high-frequency transformer provided by the embodiment of the utility model can effectively lead out the heat in the high-frequency transformer to the outside under the condition of keeping the electrical property and the existing internal structure of the high-frequency transformer, thereby improving the heat dissipation effect.
Description
Technical Field
The utility model relates to the technical field of transformers, in particular to a high-frequency transformer.
Background
With the wide use of high-frequency transformers, and the high-frequency transformers have large output power, the heat of the high-frequency transformers is too large, and therefore, the heat dissipation of the high-frequency transformers is very important.
The heat dissipation mode of the existing high-frequency transformer mainly comprises: firstly, heat is radiated outwards through the surface of the magnetic core body; secondly, the surface layer of the lead body dissipates heat outwards; thirdly, conducting heat to the PCB through lead pins to dissipate heat; however, the heat dissipation effect still needs to be further improved, how to not affect the electrical performance and the existing internal structure of the high-frequency transformer, and how to effectively dissipate heat of the high-frequency transformer, which is a technical problem that needs to be solved urgently.
SUMMERY OF THE UTILITY MODEL
In view of the problems in the prior art, embodiments of the present invention provide a high frequency transformer, which can at least partially solve the problems in the prior art.
The utility model provides a high-frequency transformer, comprising:
a magnetic core, a plurality of windings, and at least one thermally conductive component; wherein:
the magnetic core comprises a first central column, and the first central column penetrates through the plurality of windings;
each heat conducting component comprises a first component and a second component; the first component is adjacent to any one of the plurality of windings; the second assembly extends to an exterior of the high frequency transformer.
If the coils in the plurality of windings are all flat coils, each first assembly is provided with a through hole, and the first central column penetrates through the through hole of each first assembly and the plurality of windings.
The magnetic cores comprise two first magnetic cores, each first magnetic core comprises a second central column, and each first central column consists of two second central columns of the first magnetic cores.
The magnetic cores comprise a first magnetic core and a second magnetic core, the first magnetic core comprises a second central column, the first central column is the second central column, and the first magnetic core is in contact with the second magnetic core through the second central column.
Wherein the magnetic core is integrally formed.
Wherein, the first component is provided with a notch leading to the through hole.
Wherein the center of the through hole of the first component of the heat conducting component is close to the position in the middle of the first center column.
Wherein each of the windings comprises the pancake coil and a wire cake; any one side of the flat coil, the heat conducting assembly and the wire cake is provided with a high-temperature resistant sheet.
Wherein, if the coils in the plurality of windings are all the coils arranged in a stranded wire, the high-frequency transformer further comprises: a framework; the first component is attached to the outside of the bobbin of the framework and/or clamped between windings wound on the bobbin.
Wherein an included angle exists between the first component and the second component.
The high-frequency transformer provided by the embodiment of the utility model comprises a magnetic core, a plurality of windings and at least one heat conducting component; wherein: the magnetic core comprises a first central column, and the first central column penetrates through the plurality of windings; each heat conducting component comprises a first component and a second component; the first component is adjacent to any one of the plurality of windings; the second assembly extends to the outside of the high-frequency transformer, so that the heat inside the high-frequency transformer can be effectively led out, the heat dissipation effect is improved, and the electrical property and the existing internal structure of the high-frequency transformer are not influenced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts. In the drawings:
fig. 1 is a schematic structural diagram of a high-frequency transformer according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a high-frequency transformer according to another embodiment of the present invention.
Fig. 3 is a schematic diagram of a partial structure of a high-frequency transformer according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a first magnetic core according to another embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a first magnetic core and a second magnetic core according to another embodiment of the present invention.
FIG. 6 is a schematic diagram illustrating a thin film gasket according to an embodiment of the present invention.
A magnetic core 1;
a winding 2;
a heat conducting component 3;
a framework 4;
a first magnetic core 11;
a second magnetic core 12;
a second central column 111;
a first component 31;
a second assembly 32;
a through hole 311;
a notch 312;
an insulating layer 33;
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
Fig. 1 is a schematic structural diagram of a high-frequency transformer according to an embodiment of the present invention, and as shown in fig. 1 and fig. 2, the high-frequency transformer according to the embodiment of the present invention includes: a magnetic core 1, a plurality of windings 2 and at least one thermally conductive component 3; wherein:
the magnetic core 1 comprises a first central column, and the first central column penetrates through the plurality of windings 2; the magnetic core 1 and the first center post are not shown in fig. 2, and the magnetic core 1 and the first center post are disposed at the cylindrical hollow position in fig. 4.
Each of the heat-conducting members 3 includes a first member 31 and a second member 32; the first component 31 is adjacent to any one of the plurality of windings 2; the second assembly 32 extends to the outside of the high frequency transformer. The second member 32 extending to the outside of the high frequency transformer is not limited to the shape shown in fig. 1 and 2 and the extending direction, for example, the second member 32 may be unfolded to maintain a straight state with the first member 31, or the second member 32 may be an arc-bent shape to better achieve heat dissipation by increasing the contact area.
The high-frequency transformer firstly transfers the internal heat to the heat conducting component 3 and then emits the heat outwards from the heat conducting component 3; thereby solving the heat dissipation problem of the high-frequency transformer. The mode can effectively lead out the heat in the high-frequency transformer, improves the heat dissipation effect, and does not influence the electrical property and the existing internal structure of the high-frequency transformer.
Further, as shown in fig. 3, if the coils in the plurality of windings 2 are all flat coils, each of the first assemblies 31 is opened with a through hole 311, and the first central column passes through the through hole 311 of each of the first assemblies 31 and the plurality of windings 2. As shown in fig. 1, the first central column is located between the two magnetic cores 1, and passes through the through hole 311 of the first assembly 31 and the plurality of windings 2, so that the first assembly 31 and the plurality of windings 2 can move axially along the first central column.
The shape of the through hole 311 may be adapted to the shape of the cross-section of the first central pillar, so that the heat conductive member 3 may be stably fixed on the first central pillar.
Further, as shown in fig. 4, the magnetic core 1 includes two first magnetic cores 11, each of the first magnetic cores 11 includes a second central pillar 111, and the first central pillar is composed of the second central pillars 111 of the two first magnetic cores 11. The length of each second central pillar 111 can be long or short, and the total length of the two second central pillars 111 is equal to the length of the first central pillar.
The winding 2 and the heat conducting assembly 3 may be sleeved on the second central pillar 111.
Further, as shown in fig. 5, the magnetic core 1 includes a first magnetic core 11 and a second magnetic core 12, the first magnetic core 11 includes a second central pillar 111, the first central pillar is the second central pillar 111, and the first magnetic core 11 is in contact with the second magnetic core 12 through the second central pillar 111. The winding 2 and the heat conducting assembly 3 may be sleeved on the second central pillar 111.
Further, the magnetic core 1 is integrally molded. The winding 2 and the heat conducting component 3 may be wound around the first central pillar of the integrally formed magnetic core 1.
Further, as shown in fig. 3, the first component 31 is opened with a notch 312 leading to the through hole 311. Any position of the first component 31 may be provided with a notch 312 leading to the through hole 311, the width of the notch 312 is not particularly limited, and the notch 312 can reduce the eddy current of the heat conducting component itself, thereby reducing the heat generated by the heat conducting component itself.
Further, the center of the through hole 311 of the first member 31 of the heat conductive member 3 is close to a position at the middle of the first center pillar. As shown by the schematic line of heat conduction inside the high-frequency transformer in fig. 1 (the arrow line along the axial direction of the first center post in fig. 1), it can be understood that the heat quantity is high at the middle of the first center post, and therefore, by bringing the center of the through hole 311 close to the middle of the first center post, the heat radiation effect can be more effectively achieved.
Further, each of the windings 2 includes the flat coil and the wire cake. That is, the technical solution of the embodiment of the present invention may also be adapted to various windings 2, including pancake coils and wire cakes, for example.
Further, as shown in fig. 6, a high temperature resistant sheet is disposed on any one side of the flat coil, the heat conducting assembly 3 and the wire cake. The high temperature resistant sheet corresponds to the high temperature film gasket in fig. 6, and needs to resist high temperature to prevent the heat from being damaged due to overhigh heat, and mainly plays an insulating role. The high temperature resistant material is not particularly limited in the embodiments of the present invention.
Further, if the coils in the plurality of windings 2 are all coils arranged in a multi-strand manner, the high frequency transformer further includes: a framework 4;
the heat conducting component 3 comprises a first component 31 and a second component 32;
the first member 31 is attached to the outside of the bobbin 4 and/or the first member 31 is sandwiched between the windings 2 wound around the bobbin.
The first component 31 may be provided as a first layer wound on a bobbin, or the first layer of the bobbin may be the windings 2, and the first component 31 may be sandwiched between the windings 2 of each layer.
The first member 31 may be provided as a first layer wound around the bobbin, or may be sandwiched between the windings 2 of the respective layers.
Further, an included angle exists between the first component 31 and the second component 32. The angle value of the included angle is not particularly limited, and may be selected from 90 degrees, 135 degrees, 120 degrees, 140 degrees, 179 degrees, and the like, as shown in fig. 1.
The first member 31 and the second member 32 may be connected by a curved surface or other irregular shapes, which is not limited herein. The first component 31 and the second component 32 in the heat conducting component 3 may be integrally formed, or may be spliced or clamped, and the like, which is not limited herein.
Further, an insulating layer 33 is laid on the surface of the heat conducting component 3 to prevent the occurrence of an electrical short circuit.
Furthermore, the heat conducting component 3 is made of an alloy material and a metal material with a good heat conducting effect, for example, the heat conducting component includes an aluminum sheet or a copper sheet, and can conduct heat from the inside of the high-frequency transformer to the outside of the high-frequency transformer quickly.
Further, the thickness of the heat conducting component 3 is 0.1-0.5 cm, and can be selected to be 0.1 cm, 0.25 cm, 0.3 cm, 0.4 cm and the like, and the smaller thickness is more beneficial to improving the heat dissipation effect, but the requirement on the manufacturing process is higher.
The high-frequency transformer provided by the embodiment of the utility model comprises a magnetic core, a plurality of windings and at least one heat conducting component; wherein: the magnetic core comprises a first central column, and the first central column penetrates through the plurality of windings; each heat conducting component comprises a first component and a second component; the first component is adjacent to any one of the plurality of windings; the second assembly extends to the outside of the high-frequency transformer, so that the heat inside the high-frequency transformer can be effectively led out, the heat dissipation effect is improved, and the electrical property and the existing internal structure of the high-frequency transformer are not influenced.
In the description herein, reference to the description of the terms "one embodiment," "a particular embodiment," "some embodiments," "for example," "an example," "a particular example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A high-frequency transformer, characterized by comprising: a magnetic core, a plurality of windings, and at least one thermally conductive component; wherein:
the magnetic core comprises a first central post that passes through the plurality of windings;
each heat conducting component comprises a first component and a second component; the first component is adjacent to any one of the plurality of windings; the second component extends to the outside of the high frequency transformer.
2. The high-frequency transformer according to claim 1, wherein if the coils of the plurality of windings are all flat coils, each of the first members has a through hole, and the first center post passes through the through hole of each of the first members and the plurality of windings.
3. The high-frequency transformer according to claim 2, wherein said magnetic cores comprise two first magnetic cores, each of said first magnetic cores comprising a second central pillar, said first central pillar being composed of the second central pillars of said two first magnetic cores.
4. The high-frequency transformer according to claim 2, wherein the magnetic core includes a first magnetic core and a second magnetic core, the first magnetic core includes a second center post, the first center post is the second center post, and the first magnetic core is in contact with the second magnetic core through the second center post.
5. The high-frequency transformer according to claim 2, wherein said magnetic core is integrally formed.
6. The high frequency transformer according to claim 2, wherein the first member is notched to the through hole.
7. The high frequency transformer according to claim 2, wherein a center of the through hole of the first member of the heat conductive member is located near a position at a middle of the first center post.
8. The high frequency transformer according to claim 2, wherein each of said windings comprises said pancake coil and a wire cake; any one side of the flat coil, the heat conducting assembly and the wire cake is provided with a high-temperature resistant sheet.
9. The high-frequency transformer according to claim 2, wherein if the coils in the plurality of windings are all coils arranged in a multi-strand manner, the high-frequency transformer further comprises: a framework;
the first component is attached to the outside of the bobbin of the framework and/or clamped between windings wound on the bobbin.
10. The high frequency transformer according to claim 1, wherein an angle exists between the first component and the second component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123430168.0U CN216450482U (en) | 2021-12-31 | 2021-12-31 | High-frequency transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123430168.0U CN216450482U (en) | 2021-12-31 | 2021-12-31 | High-frequency transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216450482U true CN216450482U (en) | 2022-05-06 |
Family
ID=81377890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123430168.0U Active CN216450482U (en) | 2021-12-31 | 2021-12-31 | High-frequency transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216450482U (en) |
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2021
- 2021-12-31 CN CN202123430168.0U patent/CN216450482U/en active Active
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