CN220357946U - Transformer - Google Patents
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- CN220357946U CN220357946U CN202322042316.4U CN202322042316U CN220357946U CN 220357946 U CN220357946 U CN 220357946U CN 202322042316 U CN202322042316 U CN 202322042316U CN 220357946 U CN220357946 U CN 220357946U
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- shielding
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- 238000004804 winding Methods 0.000 claims abstract description 73
- 239000010410 layer Substances 0.000 claims description 134
- 230000015556 catabolic process Effects 0.000 claims description 12
- 239000012790 adhesive layer Substances 0.000 claims description 4
- 238000009413 insulation Methods 0.000 description 7
- 210000003298 dental enamel Anatomy 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Coils Of Transformers For General Uses (AREA)
- Regulation Of General Use Transformers (AREA)
Abstract
The utility model provides a transformer, which comprises a secondary coil layer, a shielding coil layer, an auxiliary coil layer and a primary coil layer, wherein the secondary coil layer comprises a secondary coil formed by machine winding, the shielding coil layer comprises a shielding coil formed by machine winding, the auxiliary coil layer comprises an auxiliary coil formed by machine winding, and the primary coil layer comprises a primary coil formed by machine winding; the secondary coil layer, the shielding coil layer, the auxiliary coil layer and the primary coil layer are sequentially arranged in parallel with each other; the cross sections of the secondary coil, the auxiliary coil and the primary coil are circular, and the diameter of the secondary coil is larger than that of the primary coil; the cross section of the shielding coil is rectangular, and the number of turns of the shielding coil is smaller than that of the primary coil.
Description
Technical Field
The utility model relates to the field of electronic devices, in particular to a transformer.
Background
Among the numerous transformers available, one type of transformer has coils formed by machine winding, which typically employ round wires.
However, when such a circular wire is wound to form a shield coil of a transformer, the transformer is inferior in uniformity in mass production.
Disclosure of Invention
It has been found that the distributed capacitance stability of the shield coil wound with such a circular wire to form a transformer is poor, resulting in poor consistency of the transformer in mass production.
The utility model provides a transformer, which is used for improving the shielding performance of the transformer.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
a transformer comprising a secondary coil layer including a secondary coil formed by machine winding, a shield coil layer including a shield coil formed by machine winding, an auxiliary coil layer including an auxiliary coil formed by machine winding, and a primary coil layer including a primary coil formed by machine winding; the secondary coil layer, the shielding coil layer, the auxiliary coil layer and the primary coil layer are sequentially arranged in parallel with each other; the cross sections of the secondary coil, the auxiliary coil and the primary coil are circular, and the diameter of the secondary coil is larger than that of the primary coil; the cross section of the shielding coil is rectangular, and the number of turns of the shielding coil is smaller than that of the primary coil.
Preferably, the diameter of the primary coil is larger than the diameter of the auxiliary coil; alternatively, the primary coil is formed by winding a plurality of strands, each of which has a diameter smaller than or equal to the diameter of the auxiliary coil.
Preferably, the number of turns of the shielding coil is smaller than the number of turns of the auxiliary coil; or the number of turns of the shielding coil is larger than that of the auxiliary coil; alternatively, the number of turns of the shield coil is equal to the number of turns of the auxiliary coil.
Preferably, insulating layers are arranged between the secondary coil layer and the shielding coil layer, between the shielding coil layer and the auxiliary coil layer and between the auxiliary coil layer and the primary coil layer; an insulating layer between the auxiliary coil layer and the primary coil layer is used to include protection against voltage breakdown between the auxiliary coil and the primary coil.
Preferably, the primary coil comprises a wound enameled wire and a voltage breakdown preventing adhesive layer coated on the enameled wire.
The utility model also provides a transformer, comprising a secondary coil layer, a shielding coil layer and a primary coil layer, wherein the secondary coil layer comprises a secondary coil formed by machine winding, the shielding coil layer comprises a shielding coil and an auxiliary coil which are formed by machine winding and are mutually separated, and the primary coil layer comprises a primary coil formed by machine winding; the secondary coil layer, the shielding coil layer and the primary coil layer are sequentially arranged in parallel with each other; the cross sections of the secondary coil, the auxiliary coil and the primary coil are circular, and the diameter of the secondary coil is larger than that of the primary coil; the cross section of the shielding coil is rectangular, and the number of turns of the shielding coil is smaller than that of the primary coil.
Preferably, the diameter of the primary coil is larger than the diameter of the auxiliary coil; alternatively, the primary coil is formed by winding a plurality of strands, each of which has a diameter smaller than or equal to the diameter of the auxiliary coil.
Preferably, insulating layers are arranged between the secondary coil layer and the shielding coil layer and between the shielding coil layer and the primary coil layer.
Preferably, the insulating layer between the shield coil layer and the primary coil layer is for including preventing voltage breakdown between the shield coil and the auxiliary coil and the primary coil, respectively.
Preferably, the primary coil comprises a wound enameled wire and a voltage breakdown preventing adhesive layer coated on the enameled wire.
Because the cross section of the shielding coil is rectangular, the width of the rectangle on the winding plane is larger than the diameter of the primary coil, and the number of turns of the shielding coil is smaller than that of the primary coil, so that under the same condition, the wires of each turn of the shielding coil formed by machine winding are smoother, and the wires of each turn of the shielding coil are not easy to be highly misplaced in the thickness direction of the shielding coil, thereby improving the stability and consistency of the distributed capacitance of the shielding coil, and further ensuring the stability and consistency of the mass production transformers. In addition, since the secondary coil, the auxiliary coil, and the primary coil can be formed by winding a common circular wire, a cost advantage can be maintained.
Other advantages of the present utility model will be set forth in the description of specific technical features and solutions, by which those skilled in the art should understand the advantages that the technical features and solutions bring.
Drawings
Preferred embodiments of the present utility model will be described below with reference to the accompanying drawings. In the figure:
FIG. 1 is a schematic cross-sectional view of a transformer according to an embodiment of the present utility model;
FIG. 2 is a schematic top view of an auxiliary coil layer of the transformer of FIG. 1;
FIG. 3 is a schematic cross-sectional view of a transformer according to another embodiment of the present utility model;
fig. 4 is a schematic top view of an auxiliary coil layer in the transformer of fig. 3.
Detailed Description
The present utility model is described below based on examples, but the present utility model is not limited to only these examples. In the following detailed description of the present utility model, certain specific details are set forth in order to avoid obscuring the present utility model, and in order to avoid obscuring the present utility model, well-known methods, procedures, flows, and components are not presented in detail.
Moreover, those of ordinary skill in the art will appreciate that the drawings are provided herein for illustrative purposes and that the drawings are not necessarily drawn to scale.
Unless the context clearly requires otherwise, throughout the description and the claims, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, it is the meaning of "including but not limited to".
In the description of the present utility model, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, in the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
Fig. 1 shows a transformer 100 according to an embodiment of the present utility model, which includes a secondary winding layer 130, a shielding winding layer 140, an auxiliary winding layer 150, a primary winding layer 160, a support 110, and a magnetic core 120, wherein the secondary winding layer 130, the shielding winding layer 140, the auxiliary winding layer 150, and the primary winding layer 160 may be disposed in the support 110, and the magnetic core 120 may be disposed on the periphery of the support 110 to provide magnetic circuit paths for the different winding layers.
The secondary coil layer 130 includes a secondary coil formed by machine winding, and as shown in fig. 2, the shield coil layer 140 includes a shield coil formed by machine winding, the auxiliary coil layer 150 includes an auxiliary coil formed by machine winding, and the primary coil layer 160 includes a primary coil formed by machine winding; the secondary coil layer 130, the shield coil layer 140, the auxiliary coil layer 150, and the primary coil layer 160 are sequentially disposed parallel to each other. For example, the wound layers of coils are sequentially disposed in the holder 110 from top to bottom.
The cross sections of the secondary coil, the auxiliary coil and the primary coil are circular, so that the three coils can be formed by winding common circular wires; the cross section of the shielding coil is rectangular, the width of the rectangle on the winding plane is larger than the diameter of the primary coil, and the number of turns of the shielding coil is smaller than that of the primary coil, so that under the same condition, all turns of wires of the shielding coil formed by machine winding are smoother, and the height dislocation among all turns of wires in the thickness direction of the shielding coil is not easy, thereby improving the stability and consistency of the distributed capacitance of the shielding coil, and further guaranteeing the stability and consistency of the mass production transformers. In addition, since the secondary coil, the auxiliary coil, and the primary coil can be formed by winding a common circular wire, a cost advantage can be maintained. In one embodiment, as shown in fig. 1, the number of primary coils is greater and the width of the support 110 is smaller, so that the primary coils include a stacked first primary coil 161 and second primary coil 162, which are connected together by a wire 163 that is perpendicular to the primary coil layer 160.
In the present transformer, the current passing through the primary winding is generally smaller than the current passing through the secondary winding, for which purpose the diameter of the secondary winding is set to be larger than the diameter of the primary winding to accommodate the large current of the secondary winding, and the cost of the primary winding material can be controlled due to the smaller diameter of the primary winding.
In an embodiment the auxiliary coil is arranged to form an induced voltage by forming a magnetic coupling with the primary coil, which induced voltage is typically used for a low voltage dc voltage of a control circuit in a switching power supply, whereby the current through the auxiliary coil is typically smaller than the current through the primary coil, whereby the diameter of the primary coil is arranged to be larger than the diameter of the auxiliary coil to accommodate the larger current of the secondary primary coil, and whereby the cost of the auxiliary coil material can be controlled due to the smaller diameter of the auxiliary coil. In another embodiment, the primary coil may be formed by multi-strand winding, such that the diameter of each strand of wire may be less than or equal to the diameter of the auxiliary coil.
In one embodiment, the number of turns of the shielding coil is smaller than that of the auxiliary coil, so that under the same condition, all turns of wires of the shielding coil formed by machine winding are smoother, and the wires of all turns of wires are not easy to be staggered in the thickness direction of the shielding coil, so that the stability and consistency of the distributed capacitance of the shielding coil are improved, and the shielding effect is improved. In another embodiment, the number of turns of the shielding coil may also be greater than, or equal to, the number of turns of the auxiliary coil.
In one embodiment, to improve insulation between adjacent layers, an insulation layer 170 is disposed between the secondary coil layer 130 and the shield coil layer 140, an insulation layer 180 is disposed between the shield coil layer 140 and the auxiliary coil layer 150, and an insulation layer 190 is disposed between the auxiliary coil layer 150 and the primary coil layer 160.
In addition, in the present transformer, the voltage applied to the primary winding is generally high, for example, 300V or more, and the voltage generated at the auxiliary winding is low, for example, generally within several tens of volts, and for this purpose, the insulating layer 190 between the auxiliary winding layer 150 and the primary winding layer 160 also serves to prevent voltage breakdown between the auxiliary winding and the primary winding.
In one embodiment, the primary coil includes a wound enamel wire, and a voltage breakdown preventing glue layer coated on the enamel wire. Generally, the withstand voltage value of the enameled wire is low, and the enameled wire can be broken down by high voltage when applied to the transformer.
Fig. 3 shows a transformer 200 according to another embodiment of the present utility model, which includes a secondary coil layer 230, a shielding coil layer 240, and a primary coil layer 250, wherein the secondary coil layer 230, the shielding coil layer 240, and the primary coil layer 250 may be disposed in a support 210, and a magnetic core 220 may be mounted on the periphery of the support 210 to provide magnetic circuit paths for the different coil layers.
The secondary coil layer 230 includes a secondary coil formed by machine winding, and as shown in fig. 4, the shield coil layer 240 includes a shield coil and an auxiliary coil formed by machine winding and separated from each other, and the primary coil layer 250 includes a primary coil formed by machine winding; the secondary coil layer 230, the shield coil layer 240, and the primary coil layer 250 are sequentially disposed parallel to each other; for example, the wound secondary coil, the combination of the shield coil and the auxiliary coil, and the primary coil are disposed in the holder 210 in this order from top to bottom.
The cross sections of the secondary coil, the auxiliary coil and the primary coil are circular, so that the three coils can be formed by winding common circular wires; the cross section of the shielding coil is rectangular, the width of the rectangle on the winding plane is larger than the diameter of the primary coil, and the number of turns of the shielding coil is smaller than that of the primary coil, so that under the same condition, all turns of wires of the shielding coil formed by machine winding are smoother, the height dislocation among all turns of wires in the thickness direction of the shielding coil is not easy, and the stability and consistency of the distributed capacitance of the shielding coil are improved, so that the shielding effect is improved. In addition, since the secondary coil, the auxiliary coil, and the primary coil can be formed by winding a common circular wire, a cost advantage can be maintained. In one embodiment, as shown in fig. 3, the number of primary coils is greater and the width of the stent 210 is smaller, and thus the primary coils include a stacked first primary coil 251 and second primary coil 252, which are connected together by a wire 253 that is perpendicular to the primary coil layer 250.
In the present transformer, the current passing through the primary winding is generally smaller than the current passing through the secondary winding, for which purpose the diameter of the secondary winding is set to be larger than the diameter of the primary winding to accommodate the large current of the secondary winding, and the cost of the primary winding material can be controlled due to the smaller diameter of the primary winding.
In an embodiment the auxiliary coil is arranged to form an induced voltage by forming a magnetic coupling with the primary coil, which induced voltage is typically used for a low voltage dc voltage of a control circuit in a switching power supply, whereby the current through the auxiliary coil is typically smaller than the current through the primary coil, whereby the diameter of the primary coil is arranged to be larger than the diameter of the auxiliary coil to accommodate the larger current of the secondary primary coil, and whereby the cost of the auxiliary coil material can be controlled due to the smaller diameter of the auxiliary coil. In another embodiment, the primary coil may be formed by multi-strand winding, such that the diameter of each strand of wire may be less than or equal to the diameter of the auxiliary coil.
In one embodiment, to improve insulation between adjacent layers, an insulation layer 260 is provided between the secondary coil layer 230 and the shield coil layer 240, and an insulation layer 270 is provided between the shield coil layer 240 and the primary coil layer 250.
In addition, in the present transformer, the voltage applied to the primary coil is generally high, for example, 300V or more, and the voltage generated at the auxiliary coil is low, for example, generally within several tens of volts, and the voltage across the shield coil is also low, and for this reason, the insulating layer 270 between the shield coil layer 240 and the primary coil layer 250 also serves to prevent voltage breakdown between the shield coil and the auxiliary coil, respectively, and the primary coil.
In one embodiment, the primary coil includes a wound enamel wire, and a voltage breakdown preventing glue layer coated on the enamel wire. Generally, the withstand voltage value of the enameled wire is low, and the enameled wire can be broken down by high voltage when applied to the transformer.
Those skilled in the art will appreciate that the above-described preferred embodiments can be freely combined and stacked without conflict.
It will be understood that the above-described embodiments are merely illustrative and not restrictive, and that all obvious or equivalent modifications and substitutions to the details given above may be made by those skilled in the art without departing from the underlying principles of the utility model, are intended to be included within the scope of the appended claims.
Claims (10)
1. A transformer comprises a secondary coil layer, a shielding coil layer, an auxiliary coil layer and a primary coil layer, and is characterized in that,
the secondary coil layer includes a secondary coil formed by machine winding, the shield coil layer includes a shield coil formed by machine winding, the auxiliary coil layer includes an auxiliary coil formed by machine winding, and the primary coil layer includes a primary coil formed by machine winding;
the secondary coil layer, the shielding coil layer, the auxiliary coil layer and the primary coil layer are sequentially arranged in parallel with each other; the cross sections of the secondary coil, the auxiliary coil and the primary coil are circular, and the diameter of the secondary coil is larger than that of the primary coil; the cross section of the shielding coil is rectangular, and the number of turns of the shielding coil is smaller than that of the primary coil.
2. The transformer according to claim 1, wherein the transformer comprises a transformer,
the diameter of the primary coil is larger than that of the auxiliary coil; or,
the primary coil is formed by winding a plurality of strands, and the diameter of each strand of wire is smaller than or equal to the diameter of the auxiliary coil.
3. The transformer according to claim 1, wherein the transformer comprises a transformer,
the number of turns of the shielding coil is smaller than that of the auxiliary coil; or,
the number of turns of the shielding coil is larger than that of the auxiliary coil; or,
the number of turns of the shielding coil is equal to the number of turns of the auxiliary coil.
4. A transformer according to claim 3, wherein,
insulating layers are arranged between the secondary coil layer and the shielding coil layer, between the shielding coil layer and the auxiliary coil layer and between the auxiliary coil layer and the primary coil layer;
an insulating layer between the auxiliary coil layer and the primary coil layer is used to include protection against voltage breakdown between the auxiliary coil and the primary coil.
5. The transformer according to claim 4, wherein the transformer comprises a transformer,
the primary coil comprises a wound enameled wire and a voltage breakdown preventing adhesive layer coated on the enameled wire.
6. A transformer comprises a secondary coil layer, a shielding coil layer and a primary coil layer, and is characterized in that,
the secondary coil layer includes a secondary coil formed by machine winding, the shield coil layer includes a shield coil and an auxiliary coil formed by machine winding and separated from each other, and the primary coil layer includes a primary coil formed by machine winding;
the secondary coil layer, the shielding coil layer and the primary coil layer are sequentially arranged in parallel with each other; the cross sections of the secondary coil, the auxiliary coil and the primary coil are circular, and the diameter of the secondary coil is larger than that of the primary coil; the cross section of the shielding coil is rectangular, and the number of turns of the shielding coil is smaller than that of the primary coil.
7. The transformer according to claim 6, wherein the transformer comprises a transformer,
the diameter of the primary coil is larger than that of the auxiliary coil; or,
the primary coil is formed by winding a plurality of strands, and the diameter of each strand of wire is smaller than or equal to the diameter of the auxiliary coil.
8. The transformer according to claim 6, wherein the transformer comprises a transformer,
insulating layers are arranged between the secondary coil layer and the shielding coil layer and between the shielding coil layer and the primary coil layer.
9. The transformer according to claim 8, wherein the transformer comprises a transformer,
an insulating layer between the shield coil layer and the primary coil layer is used to include protection against voltage breakdown between the shield coil and the auxiliary coil, respectively, and the primary coil.
10. The transformer according to claim 9, wherein the transformer comprises a transformer,
the primary coil comprises a wound enameled wire and a voltage breakdown preventing adhesive layer coated on the enameled wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322042316.4U CN220357946U (en) | 2023-07-31 | 2023-07-31 | Transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322042316.4U CN220357946U (en) | 2023-07-31 | 2023-07-31 | Transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220357946U true CN220357946U (en) | 2024-01-16 |
Family
ID=89504593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322042316.4U Active CN220357946U (en) | 2023-07-31 | 2023-07-31 | Transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220357946U (en) |
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2023
- 2023-07-31 CN CN202322042316.4U patent/CN220357946U/en active Active
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