CN220020837U - High-voltage insulation coil assembly and transformer magnetic core - Google Patents
High-voltage insulation coil assembly and transformer magnetic core Download PDFInfo
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- CN220020837U CN220020837U CN202223363321.7U CN202223363321U CN220020837U CN 220020837 U CN220020837 U CN 220020837U CN 202223363321 U CN202223363321 U CN 202223363321U CN 220020837 U CN220020837 U CN 220020837U
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- circuit board
- coil circuit
- printed
- printed coil
- slot
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- 238000009413 insulation Methods 0.000 title claims abstract description 51
- 238000004382 potting Methods 0.000 claims abstract description 31
- 239000011162 core material Substances 0.000 claims description 42
- 229910001289 Manganese-zinc ferrite Inorganic materials 0.000 claims description 4
- JIYIUPFAJUGHNL-UHFFFAOYSA-N [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mn++].[Mn++].[Mn++].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Zn++].[Zn++] Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mn++].[Mn++].[Mn++].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Zn++].[Zn++] JIYIUPFAJUGHNL-UHFFFAOYSA-N 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000011889 copper foil Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000006082 mold release agent Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Landscapes
- Coils Or Transformers For Communication (AREA)
Abstract
The utility model provides a high-voltage insulating coil assembly and a transformer magnetic core, wherein the high-voltage insulating coil assembly is arranged on a transformer magnetic core body and comprises a printed coil circuit board and an insulating potting layer, and the printed coil circuit board is stacked on the magnetic core body; the printed coil circuit board comprises a primary printed coil circuit board and a secondary printed coil circuit board, and the primary printed coil circuit board and/or the secondary printed coil circuit board are respectively encapsulated in an insulation encapsulating layer so as to insulate the primary printed coil circuit board and/or the secondary printed coil circuit board at high voltage. The utility model improves the insulation capability of the printed coil circuit board, fixes the distance between the printed circuit board layers, controls the insulation distance, ensures that the processing is more efficient, and ensures that the product size is more stable.
Description
Technical Field
The utility model belongs to the technical field of transformers, and relates to a coil assembly, in particular to a high-voltage insulation coil assembly and a transformer magnetic core.
Background
Today, when power supplies are being developed towards high power densities, in order to achieve higher efficiencies, in addition to reasonable choice of circuit structures, components and circuit parameter optimization, mechanical, thermal design and reasonable printed circuit board (PCB: printed Circuit Board) layout are increasingly important in the practical design of power supplies. In power supply design, the high frequency caused by high power density makes the design of magnetic core elements particularly important, and in addition, the design of power transformers is also critical, which is of great importance in high-power and high-frequency applications.
At present, the existing coils manufactured by the printed circuit boards do not have high-voltage insulation capability, and when the printed circuit boards are installed in a transformer, the distance between the coils is unstable because the distance between each layer of printed circuit boards cannot be fixed, and the stable output of the transformer is also affected. Therefore, there is a lack of a printed coil circuit board in the prior art that is capable of high voltage insulation while maintaining a constant layer-to-layer distance.
Disclosure of Invention
The utility model aims to provide a high-voltage insulation coil assembly and a transformer magnetic core, which are used for solving the problems that a coil does not have high-voltage insulation capability and the distance between coils is unstable.
In a first aspect, the present utility model provides a high voltage insulated coil assembly comprising a printed coil circuit board and an insulating potting layer, the printed coil circuit board being stacked on the magnetic core body; the printed coil circuit board comprises a primary printed coil circuit board and a secondary printed coil circuit board, and the primary printed coil circuit board and/or the secondary printed coil circuit board are respectively encapsulated in an insulation encapsulating layer so as to insulate the primary printed coil circuit board and/or the secondary printed coil circuit board at high voltage.
According to the utility model, the printed coil circuit board is encapsulated in the insulation encapsulating layer by adopting the scheme of encapsulating the periphery of the printed circuit board, so that the insulation capacity of the coil is improved, and the insulation problem of the high-voltage coil is solved. Meanwhile, the insulation encapsulating layer can also fix the distance between the printed circuit board layer and the layer, so that the problem of unstable distance between coils is solved, the processing is more efficient, and the product size is more stable.
In one implementation manner of the first aspect, a first slot is formed on the printed circuit board, a second slot is correspondingly formed on the insulation encapsulating layer, and the printed circuit board is stacked on the center pillar of the magnetic core body through the first slot and the second slot.
In the implementation mode, the first slot hole is arranged on the printed circuit board, and the second slot hole is correspondingly arranged on the insulation encapsulating layer, so that the printed circuit board encapsulated in the insulation encapsulating layer can be stacked and installed on the magnetic core of the transformer through the first slot hole and the second slot hole, loss is reduced, and the copper foil on the printed circuit board has good heat dissipation conditions, the volume can be effectively saved, and the power density is improved.
In one implementation manner of the first aspect, the manner in which the printed coil circuit board is stacked on the center leg of the magnetic core body includes that the primary printed coil circuit board and the secondary printed coil circuit board are stacked on the center leg of the magnetic core body in a sandwich manner.
In the implementation mode, the primary side printed coil circuit board and the secondary side printed coil circuit board are laminated on the middle note of the magnetic core body in a sandwich mode, and the installation mode increases the effective coupling area of the primary side and the secondary side and reduces leakage inductance of the transformer.
In one implementation of the first aspect, the center pillar is a cylinder.
In one implementation manner of the first aspect, the first slot hole and the second slot hole are circular holes.
In the implementation mode, the first slot hole and the second slot hole are round holes and are consistent with the shape of the middle column of the magnetic core of the transformer, so that the primary printed circuit board and the secondary printed circuit board can be installed in the transformer.
In one implementation of the first aspect, the first slot size is larger than the second slot size, and the first slot and the second slot size are larger than the center pillar size.
In this implementation, the printed circuit board is encapsulated in the encapsulation insulating layer, the first slot hole is larger than the size of the second slot hole, and both are larger than the size of the center pillar, so that the primary printed circuit board and the secondary printed circuit board can be installed into the transformer.
In one implementation manner of the first aspect, the insulating encapsulating layer is encapsulated by an insulating encapsulating colloid.
In this implementation mode, through insulating potting adhesive with printed coil circuit board embedment in insulating potting layer, the insulating ability of coil has been promoted, the insulating problem of high-voltage coil has been solved.
In one implementation of the first aspect, all of the insulating potting layers are the same height to fix the distance between adjacent printed coil circuit boards.
In this implementation mode, through the insulating encapsulating layer that highly is the same for the distance between each adjacent printed coil circuit board that gets into the transformer keeps unanimous, has solved the unstable condition of distance between the coil, effectively controls insulating distance, makes the processing more efficient, and the product size is more stable.
In a second aspect, the present utility model provides a transformer core, including a core body, a middle pillar is disposed in the middle of the core body, side pillars are symmetrically disposed on two sides of the middle pillar, and the high voltage insulation coil assembly according to any one of the first aspect is disposed on the middle pillar.
According to the utility model, the high-voltage insulating coil assembly according to any one of the first aspect is arranged on the center post, so that leakage inductance of the transformer is reduced, loss is reduced, and the copper foil on the printed coil circuit board has good heat dissipation conditions, so that the volume can be effectively saved, the size is more stable, the power density is improved, and the processing efficiency is higher.
In one implementation of the second aspect, the magnetic core material includes manganese zinc ferrite.
In the implementation mode, the manganese-zinc ferrite has the characteristics of high magnetic permeability, high saturation induction intensity, high cut-off frequency, low loss and wide temperature stability.
As described above, the high-voltage insulation coil assembly and the transformer magnetic core of the utility model have the following beneficial effects: by adopting the scheme of encapsulating the periphery of the printed circuit board, the printed coil circuit board is encapsulated in an insulation encapsulating layer, so that the insulation capacity of the coil is improved, and the insulation problem of the high-voltage coil is solved. Meanwhile, the insulation encapsulating layer can also fix the distance between the printed circuit board layer and the layer, so that the problem of unstable distance between coils is solved, the processing is more efficient, and the product size is more stable.
Drawings
Fig. 1 is a schematic structural diagram of a high-voltage insulation coil assembly according to an embodiment of the utility model.
Fig. 2 is a schematic diagram of a primary printed circuit board in an insulation potting layer according to an embodiment of the utility model.
Fig. 3 is a schematic view showing a structure of a high voltage insulation coil assembly installed in a magnetic core of a transformer according to an embodiment of the present utility model.
Fig. 4 is a schematic structural view of a potting mold according to an embodiment of the utility model
Fig. 5 is a schematic structural diagram of a transformer core according to an embodiment of the utility model.
Description of element reference numerals
1. High voltage insulated coil assembly
10. Printed coil circuit board
101. Primary side printed coil circuit board
102. Secondary printed coil circuit board
103. First slot hole
11. Insulating potting layer
111. Second slot hole
2. Magnetic core of transformer
20. Center pillar
21. Magnetic core body
22. Side column
3. Filling and sealing mould
Detailed Description
Other advantages and effects of the present utility model will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present utility model with reference to specific examples. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict.
It should be noted that the illustrations provided in the following embodiments merely illustrate the basic concept of the present utility model by way of illustration, and only the components related to the present utility model are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complicated.
The following embodiments of the present utility model provide a high voltage insulation coil assembly and a transformer core, which solve the problems that the coil does not have high voltage insulation capability and the distance between coils is unstable.
The principle and implementation of the high voltage insulation coil assembly and the transformer core according to the present embodiment will be described in detail with reference to the accompanying drawings, so that those skilled in the art can understand the high voltage insulation coil assembly and the transformer core according to the present embodiment without any creative effort.
As shown in fig. 1, the present embodiment provides a high-voltage insulation coil assembly 1, which is mounted on a transformer core body 21 and includes a printed coil circuit board 10 and an insulation potting layer 11, wherein the printed coil circuit board 10 is stacked on the core body 21; the printed coil circuit board 10 comprises a primary printed coil circuit board 101 and a secondary printed coil circuit board 102, wherein the primary printed coil circuit board 101 and/or the secondary printed coil circuit board 102 are respectively encapsulated in an insulating potting layer 11 to insulate the primary printed coil circuit board 101 and/or the secondary printed coil circuit board 102 from high voltage.
As shown in fig. 2, the primary printed coil circuit board is encapsulated in an insulating encapsulating layer. The printed circuit board 10 is provided with a first slot 103, and the insulating encapsulating layer 11 is correspondingly provided with a second slot 111. The printed circuit board 10 is stacked on the center leg 20 of the core body 2 through the first slot 103 and the second slot 111.
Optionally, the center post 20 is cylindrical.
Alternatively, the first slot 103 and the second slot 111 are circular holes.
Specifically, the first slot 103 is larger than the second slot 111, and the first slot 103 and the second slot 111 are larger than the center post 20, so that the primary and secondary printed circuit boards can be mounted into the transformer.
Specifically, as shown in fig. 1, the primary side printed coil circuit board 101 and the secondary side printed coil circuit board 102 are laminated on the center post 20 in a sandwich form, and the effect as shown in fig. 3 is finally obtained.
It should be noted that the primary printed coil circuit board 101 and the secondary printed coil circuit board 102 can also be mounted in the transformer core 2 by other stacked forms.
Wherein, insulating encapsulating layer 11 is by insulating potting adhesive embedment. The printed coil circuit board is encapsulated in the insulation encapsulating layer through the insulation encapsulating glue, so that the insulation capacity of the coil is improved.
Specifically, as shown in fig. 4, a cylinder is provided in the potting mold 3, and the cylinder should be equal in size to the second slot 111 of the insulating potting layer 11. And the potting mold 3 should have a certain thickness.
The specific encapsulating process is as follows: after the mold release agent is applied in the potting mold 3, the printed circuit board 10 is mounted in the potting mold through the first slot 103, and at this time, the insulating potting compound is injected into the potting mold 3 until the printed circuit board 10 is completely immersed in the potting compound. After the insulating potting compound is solidified, the insulating potting layer 11 is taken out of the potting mold 3, and the printed coil circuit board 10 is successfully potted in the insulating potting layer 11.
It should be noted that, since all the insulating potting layers 11 are potted by the same potting mold 3, the heights of all the insulating potting layers 11 are the same, so that the distance between adjacent printed coil circuit boards can be fixed. Through the insulating encapsulating layer with the same height, the distances between adjacent printed coil circuit boards entering the transformer are kept consistent, the problem of unstable distance between coils is solved, and the insulating distance is effectively controlled.
In a preferred embodiment, the primary printed coil circuit board 101 is encapsulated in the insulating encapsulating layer 11, which enhances the high voltage insulation capability of the primary printed coil circuit board 101 and enables the same distance between the primary printed coil circuit board 101 and the adjacent secondary printed coil circuit board 102.
In other preferred embodiments, the secondary printed circuit board 102 may be encapsulated in the insulating encapsulating layer 11 by the encapsulating mold 3, or the primary printed circuit board 101 and/or the secondary printed circuit board 102 may be encapsulated in the insulating encapsulating layer 11 by the encapsulating mold 3.
As shown in fig. 5, the present embodiment provides a transformer core 2, which is characterized by comprising a core body 21, a center pillar 20 is disposed in the middle of the core body 21, and side pillars 22 are symmetrically disposed on two sides of the center pillar 20. As shown in fig. 3, the center pillar 20 is provided with the high voltage insulation coil assembly 1 as described in the above embodiment.
Optionally, the magnetic core material comprises manganese zinc ferrite.
According to the high-voltage insulation coil assembly and the transformer magnetic core, the printed coil circuit board 10 is encapsulated in the insulation encapsulating layer 11 by adopting the scheme of encapsulating the periphery of the printed coil circuit board, so that the printed coil circuit board and the secondary printed coil circuit board are insulated at high voltage, the insulation capacity of the coil is improved, and the insulation problem of the high-voltage coil is solved. Meanwhile, the insulation encapsulating layer 11 can also fix the distance between the layers of the printed circuit board 10, so that the problem of unstable distance between coils is solved, the processing is more efficient, and the product size is more stable.
The descriptions of the processes or structures corresponding to the drawings have emphasis, and the descriptions of other processes or structures may be referred to for the parts of a certain process or structure that are not described in detail.
The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. Accordingly, it is intended that all equivalent modifications and variations of the utility model be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
Claims (10)
1. A high voltage insulating coil assembly mounted on a transformer core body, comprising a printed coil circuit board and an insulating potting layer, the printed coil circuit board being stacked on the core body;
the printed coil circuit board comprises a primary printed coil circuit board and a secondary printed coil circuit board, and the primary printed coil circuit board and/or the secondary printed coil circuit board are respectively encapsulated in an insulation encapsulating layer so as to insulate the primary printed coil circuit board and/or the secondary printed coil circuit board at high voltage.
2. The high voltage insulation coil assembly of claim 1, wherein the printed circuit board has a first slot and the insulation potting layer has a second slot, the printed circuit board being stacked on the center leg of the core body through the first slot and the second slot.
3. The high voltage insulation coil assembly of claim 2 wherein the printed coil circuit board is stacked on the center leg of the core body in a manner that includes the primary printed coil circuit board and the secondary printed coil circuit board being stacked on the center leg of the core body in a sandwich fashion.
4. The high voltage insulation coil assembly of claim 2 wherein the center post is a cylinder.
5. The high voltage insulation coil assembly of claim 4 wherein the first slot and the second slot are circular holes.
6. The high voltage insulation coil assembly of claim 5 wherein the first slot size is larger than the second slot size, the first slot and the second slot size being larger than the center post size.
7. The high voltage insulated coil assembly of claim 1, wherein the insulating potting layer is potted with an insulating potting compound.
8. The high voltage insulated coil assembly of claim 1 wherein all of the insulating potting layers are the same height to fix the distance between adjacent printed coil circuit boards.
9. A transformer core, comprising a core body, a middle column is arranged in the middle of the core body, side columns are symmetrically arranged on two sides of the middle column, and the high-voltage insulation coil assembly according to any one of claims 1-8 is arranged on the middle column.
10. A transformer core according to claim 9, characterized in that said core material comprises manganese zinc ferrite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223363321.7U CN220020837U (en) | 2022-12-14 | 2022-12-14 | High-voltage insulation coil assembly and transformer magnetic core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223363321.7U CN220020837U (en) | 2022-12-14 | 2022-12-14 | High-voltage insulation coil assembly and transformer magnetic core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220020837U true CN220020837U (en) | 2023-11-14 |
Family
ID=88681000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223363321.7U Active CN220020837U (en) | 2022-12-14 | 2022-12-14 | High-voltage insulation coil assembly and transformer magnetic core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220020837U (en) |
-
2022
- 2022-12-14 CN CN202223363321.7U patent/CN220020837U/en active Active
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