CN115762972A - High-insulation small-volume transformer - Google Patents
High-insulation small-volume transformer Download PDFInfo
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- CN115762972A CN115762972A CN202211618218.4A CN202211618218A CN115762972A CN 115762972 A CN115762972 A CN 115762972A CN 202211618218 A CN202211618218 A CN 202211618218A CN 115762972 A CN115762972 A CN 115762972A
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Abstract
The invention discloses a high-insulation small-volume transformer, which comprises a transformer module and an insulation base, wherein the transformer module comprises a winding assembly, a framework and a magnetic core assembly, the winding assembly is arranged on the framework in a surrounding manner, and the magnetic core assembly is connected with the framework; the insulating base comprises an insulating shell and pin components, the pin components are arranged on the insulating shell, the transformer module is contained in the containing cavity of the insulating base, the winding components are connected with the pin components respectively, and the insulating shell is used for increasing the distance between the pin components and the magnetic core components. According to the transformer, the transformer module and the insulating base are arranged, so that the creepage distance between the pin assembly and the magnetic core assembly can be increased through the insulating shell, the small-sized transformer can meet the requirement of higher creepage distance, in addition, the physical insulation between the pin assembly and the magnetic core assembly can be increased through the insulating shell, and the insulating property can be further improved, so that the small-sized transformer is suitable for places with high safety requirements.
Description
Technical Field
The invention relates to the technical field of transformers, in particular to a high-insulation small-volume transformer.
Background
The transformer is a device for changing alternating voltage by using the principle of electromagnetic induction, and the main components are a primary coil, a secondary coil and a magnetic core.
Stitch on the present transformer generally sets up on the bobbin of transformer, so the stitch is close with the distance of magnetic core, the too close then can't satisfy creepage distance requirement, creepage distance refers to between two electrically conductive spare parts that record along insulating surface, under the in service behavior of difference, because insulating material around the conductor is by the electric polarization, lead to insulating material to present the electrified district of phenomenon, creepage problem can lead to insulation damage and the safety problem appears, so often the great transformer of volume can only satisfy great creepage distance requirement, satisfy high ampere's specification distance requirement promptly, however, the high insulating transformer of bulky is unfavorable for power supply element overall arrangement, also do not favorable to the miniaturized compact design of power supply product, and little transformer has that ampere's specification distance is not enough and is not suitable for the application of high ampere's specification requirement.
Therefore, how to design a transformer which has a small volume and can ensure a higher creepage distance requirement so as to meet the requirement of a high safety distance is a problem to be solved urgently by technical personnel in the field.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a high-insulation small-volume transformer capable of meeting the requirement of high safety distance.
The purpose of the invention is realized by the following technical scheme:
a high-insulation small-volume transformer, comprising: the transformer module comprises a winding assembly, a framework and a magnetic core assembly, wherein the winding assembly is arranged on the framework in a surrounding mode, and the magnetic core assembly is connected with the framework; the insulating base comprises an insulating shell and a pin assembly, the pin assembly is arranged on the insulating shell, a containing cavity is formed in the insulating shell, the transformer module is contained in the containing cavity, the winding assembly is connected with the pin assembly respectively, and the insulating shell is used for increasing the distance between the pin assembly and the magnetic core assembly.
In one embodiment, the winding assembly includes a primary winding and a secondary winding, the primary winding is disposed around the bobbin, the secondary winding is disposed around the primary winding, and the primary winding and the secondary winding are respectively connected to the pin assembly.
In one embodiment, the pin assembly includes a first pin and a second pin, the first pin and the second pin are respectively disposed on two sides of the insulating housing, the primary winding is connected to the first pin, and the secondary winding is connected to the second pin.
In one embodiment, the bobbin includes a winding post, a through hole is formed in the winding post, the magnetic core assembly is inserted into the through hole, and the winding assembly is disposed around the winding post.
In one embodiment, the bobbin further includes a first limiting plate and a second limiting plate, the first limiting plate is disposed at one end of the winding post, the second limiting plate is disposed at the other end of the winding post, and the first limiting plate and the second limiting plate are used for limiting the winding assembly.
In one embodiment, the magnetic core assembly includes a first magnetic core and a second magnetic core, a first connecting post is disposed on the first magnetic core, a second connecting post is disposed on the second magnetic core, the first connecting post is disposed on the through hole, the second connecting post is also disposed on the through hole, and one end of the first connecting post abuts against one end of the second connecting post.
In one embodiment, the insulation shell comprises an insulation bottom plate and an insulation baffle plate, the insulation baffle plate is arranged on the insulation bottom plate in a surrounding mode, the accommodating cavity is located on the insulation bottom plate, and the insulation baffle plate is used for increasing the distance between the pin assembly and the magnetic core assembly.
In one embodiment, a first insulating boss and a second insulating boss are disposed on the insulating base plate, the first insulating boss and the second insulating boss are disposed opposite to each other, the transformer module is located between the first insulating boss and the second insulating boss, one end of the first pin is disposed on the first insulating boss, and one end of the second pin is disposed on the second insulating boss.
In one embodiment, the transformer module further comprises an insulating adhesive tape, and the insulating adhesive tape is adhered to the winding assembly in a surrounding manner.
Compared with the prior art, the invention has at least the following advantages:
according to the high-insulation small-volume transformer, the creepage distance between the pin assembly and the magnetic core assembly can be increased through the insulation shell by arranging the transformer module and the insulation base, so that the small-volume transformer can meet the requirement of higher creepage distance, the insulation protection effect of the small-volume transformer is further improved, in addition, the physical insulation between the pin assembly and the magnetic core assembly can be increased through the insulation shell, the insulation performance of the small-volume transformer can be further improved, and therefore, the small-volume transformer can be suitable for places with high safety requirements, and the miniaturization and compactness design of power supply products is facilitated.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required in the embodiments will be briefly described below.
Fig. 1 is a schematic structural diagram of a high-insulation small-volume transformer according to an embodiment of the present invention;
fig. 2 is an exploded view of the high insulation small volume type transformer of fig. 1;
fig. 3 is a schematic structural diagram of an insulating base of the high-insulation small-volume transformer in fig. 1;
fig. 4 is a schematic structural diagram of a bobbin of the high-insulation small-volume transformer in fig. 1.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings.
Referring to fig. 1, 2, 3 and 4, a high-insulation small-volume transformer 10 includes: the transformer module 100 comprises a winding assembly 110, a framework 120 and a magnetic core assembly 130, wherein the winding assembly 110 is arranged on the framework 120 in a surrounding mode, and the magnetic core assembly 130 is connected with the framework 120; the insulating base 200 includes an insulating housing 210 and pin elements 220, the pin elements 220 are disposed on the insulating housing 210, the insulating housing 210 is provided with a receiving cavity, the transformer module 100 is received in the receiving cavity, the winding elements 110 are respectively connected to the pin elements 220, and the insulating housing 210 is configured to increase a distance between the pin elements 220 and the magnetic core element 130.
It should be noted that the bobbin 120 is used for winding, and the winding assembly 110 may be supported by the bobbin 120; the transformer module 100 is accommodated in the accommodating cavity of the insulating housing 210, and the transformer module 100 does not contact with the peripheral side wall of the insulating housing 210, the pin assembly 220 is located on the outer side wall of the insulating housing 210, so that the safety distance between the pin assembly 220 and the magnetic core assembly 130 can be increased, the safety distance can meet the requirement of a high creepage distance of the high-insulation small-volume transformer 10, and the problem of safety fault caused by creepage phenomenon due to insulation damage is solved, and the bottom of the insulating housing 210 is closed, so that the magnetic core assembly 130 and the pin assembly 220 close to the insulating housing 210 are separated by the insulating housing 210, so that physical insulation between the pin assembly 220 and the magnetic core assembly 130 can be increased, and further, the insulation performance of the high-insulation small-volume transformer 10 can be improved, so that not only safety can be improved, the small-volume transformer is suitable for an application scenario with high safety requirement, but also the miniaturization compact design of a power supply product is facilitated. Further, the high-insulation small-volume transformer 10 also has the advantage of convenient assembly, and when the transformer is assembled, the assembled transformer module 100 is only required to be directly installed in the insulation base 200, and then the connection end on the winding assembly 110 is directly hung on the pin assembly 220, so that the installation is more convenient and faster, and the production efficiency can be further improved; in this embodiment, the insulating housing 210 is a plastic housing, and thus, can perform an insulating function.
Further, the winding assembly 110 includes a primary winding 111 and a secondary winding 112, the primary winding 111 is disposed around the frame 120, the secondary winding 112 is disposed around the primary winding 111, and the primary winding 111 and the secondary winding 112 are respectively connected to the pin assembly 220.
It should be noted that, the primary winding 111 is wound around the framework 120, the secondary winding 112 wraps the primary winding 111, the primary winding 111 adopts three layers of insulated wires, and similarly, the secondary winding 112 also adopts three layers of insulated wires, so that the insulation protection effect can be improved; specifically, the two-end connection line of the primary winding 111 extends to the outside of the insulating case 210 and is connected to the pin assembly 220, and similarly, the two-end connection line of the secondary winding 112 extends to the outside of the insulating case 210 and is connected to the pin assembly 220.
Further, the pin assembly 220 includes a first pin 221 and a second pin 222, the first pin 221 and the second pin 222 are respectively disposed on two sides of the insulating housing 210, the primary winding 111 is connected to the first pin 221, and the secondary winding 112 is connected to the second pin 222.
It should be noted that the pin assembly 220 plays a role in conducting electricity, in this embodiment, four first pins 221 are provided, four second pins 222 are also provided, and the first pins 221 and the second pins 222 are respectively disposed on two side surfaces of the insulating housing 210, so that the first pins 221 and the second pins 222 do not interfere with each other, thereby improving the safety and ensuring the requirement of high safety distance; specifically, the connection end of the primary winding 111 is connected with the first pin 221, and the connection end of the secondary winding 112 is connected with the second pin 222; the first pin 221 is provided with a first limiting groove, and the connecting end of the primary winding 111 is limited and fixed through the first limiting groove, so that the connecting end of the primary winding 111 can be prevented from sliding on the first pin 221; similarly, the second pin 222 is also provided with a second limiting groove 222a, and the connection end of the secondary winding 112 is limited and fixed by the second limiting groove 222a, so that the secondary winding 112 is prevented from sliding on the second pin 222.
Referring to fig. 1 and 4, in one embodiment, the frame 120 includes a winding post 121, a through hole 121a is formed on the winding post 121, the magnetic core assembly 130 is disposed on the through hole 121a, and the winding assembly 110 is disposed on the winding post 121 in a surrounding manner.
It should be noted that the winding assembly 110 is wound around the winding post 121, in this embodiment, the bobbin 120 further includes a first limiting plate 122 and a second limiting plate 123, the first limiting plate 122 is disposed at one end of the winding post 121, the second limiting plate 123 is disposed at the other end of the winding post 121, and the first limiting plate 122 and the second limiting plate 123 are used for limiting the winding assembly 110, so that the winding assembly 110 disposed on the winding post 121 can be prevented from shaking up and down; further, in this embodiment, the two side edges of the first limiting plate 122 are respectively provided with a limiting protrusion 122a, the limiting protrusion 122a is a claw-shaped structure, and the limiting protrusion 122a is used for temporarily fixing the connecting end of the winding assembly 110 during winding, so as to limit the position of the connecting end, and facilitate the subsequent connection of the connecting end to the pin assembly 220.
Further, the magnetic core assembly 130 includes a first magnetic core 131 and a second magnetic core 132, a first connection post 131a is disposed on the first magnetic core 131, a second connection post 132a is disposed on the second magnetic core 132, the first connection post 131a is disposed through the through hole 121a, the second connection post 132a is also disposed through the through hole 121a, and one end of the first connection post 131a abuts against one end of the second connection post 132 a.
It should be noted that the first connecting post 131a is disposed through one end of the through hole 121a, the second connecting post 132a is also disposed through the other end of the through hole 121a, the second magnetic core 132 is located on a side close to the insulating housing 210, the second magnetic core 132 is abutted against the bottom of the insulating housing 210, and the first magnetic core 131 and the second magnetic core 132 are used for providing an electromagnetic induction magnetic field.
Referring to fig. 3, in an embodiment, the insulation housing 210 includes an insulation base plate 211 and an insulation baffle 212, the insulation baffle 212 is disposed on the insulation base plate 211 in a surrounding manner, the receiving cavity is located on the insulation base plate 211, and the insulation baffle 212 is used for increasing a distance between the pin element 220 and the magnetic core element 130.
It should be noted that the insulating baffle 212 is disposed around the periphery of the insulating base plate 211, the accommodating cavity is located on the insulating base plate 211 and surrounded by the insulating baffle 212, the transformer module 100 located in the accommodating cavity is not in contact with the insulating baffle 212, and the magnetic core assembly 130 is spaced from the insulating baffle 212 by a certain safety distance, so that the creepage distance between the pin assembly 220 and the magnetic core assembly 130 can be increased, and the insulating performance can be further improved; in addition, the insulating bottom plate 211 separates the pin assembly 220 from the magnetic core assembly 130, so that physical insulation can be further improved, the high-insulation small-volume transformer 10 is suitable for application scenarios with high safety distance requirements, and safety performance is improved.
Further, a first insulating boss 211a and a second insulating boss 211b are disposed on the insulating base plate 211, the first insulating boss 211a and the second insulating boss 211b are disposed oppositely, the transformer module 100 is located between the first insulating boss 211a and the second insulating boss 211b, one end of the first pin 221 is disposed on the first insulating boss 211a, and one end of the second pin 222 is disposed on the second insulating boss 211 b.
It should be noted that, one end of the first pin 221 is disposed on the first insulating boss 211a, one end of the second pin 222 is disposed on the second insulating boss 211b, and the thickness of the insulating base plate 211 can be increased through the first insulating boss 211a and the second insulating boss 211b, so as to ensure the stability of the first pin 221 and the second pin 222, and at the same time, the safety distance between the first pin 221 and the second pin 222 and the magnetic core assembly 130 can be further increased, and meanwhile, the transformer module 100 can be left and right limited through the first insulating boss 211a and the second insulating boss 211b, so that the magnetic core assembly 130 and the pin assembly 220 can always keep a certain safety distance.
In one embodiment, the insulating housing 210 is provided with a winding accommodating structure 213, the pin assembly 220 is located on the winding accommodating structure 213, and the winding accommodating structure 213 is used for limiting the connection end of the winding assembly 110.
It should be noted that, the winding accommodating structure 213 is a winding accommodating groove, the winding accommodating groove is disposed on the insulating baffle 212, the pin assembly 220 is disposed in the winding accommodating groove, further, the connection end of the winding assembly 110 is accommodated in the winding accommodating groove, and the connection end of the winding assembly 110 is limited by the winding accommodating groove, so that the structure of the high-insulation small-volume transformer 10 is more compact, and the overall volume of the high-insulation small-volume transformer 10 is reduced, thereby further saving the occupied space of the high-insulation small-volume transformer 10.
Further, in an embodiment, the winding accommodating structure 213 is provided with an insulating heat conducting adhesive, the connecting end of the winding assembly 110 is fixed by the insulating heat conducting adhesive, and the insulating heat conducting adhesive further has an insulating heat conducting function, preferably, the insulating heat conducting adhesive is a silicone adhesive, so that not only can the bonding strength between the connecting end of the winding assembly 110 and the winding accommodating structure 213 be ensured, but also the insulating property of the high-insulation small-volume transformer 10 can be improved, and meanwhile, the heat conducting and radiating functions can be achieved, so that the service life of the high-insulation small-volume transformer 10 can be further prolonged.
In an embodiment, a plurality of heat dissipation structures 214 are further disposed on the insulating housing 210, and each of the heat dissipation structures 214 includes a plurality of heat dissipation fins.
It should be noted that, preferably, each of the heat dissipation fins is an aluminum alloy heat dissipation fin, and the aluminum alloy has the advantages of low price, low weight and good heat conductivity, so that the heat dissipation structure 214 is arranged to quickly dissipate heat of the high-insulation small-volume transformer 10, and the service life of the high-insulation small-volume transformer 10 can be greatly prolonged. Further, each of the heat dissipation fins is further provided with an insulating coating, preferably, the insulating coating is a polyester resin insulating coating, so that each of the heat dissipation structures 214 can have insulating and heat conducting properties, and thus, the high insulating property of the high-insulation small-volume transformer 10 can also be ensured. In addition, in order to save the occupied space of each heat dissipation structure 214, a plurality of avoiding structures are disposed on the insulating baffle 212 of the insulating housing 210, each avoiding structure is recessed toward the direction of the accommodating cavity, and each heat dissipation structure 214 is disposed on each avoiding structure in a one-to-one correspondence manner.
In one embodiment, the transformer module 100 further includes an insulation tape 140, and the insulation tape 140 is adhered around the winding assembly 110.
It should be noted that the insulation adhesive tape 140 is adhered to and covers the winding assembly 110, that is, the insulation adhesive tape 140 is used to completely cover other areas of the winding assembly 110 except the connection end, so as to perform an insulation protection function, thereby improving the insulation performance.
The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention. Therefore, the protection scope of the present patent should be subject to the appended claims.
Claims (9)
1. A high insulation small volume type transformer, comprising:
the transformer module comprises a winding assembly, a framework and a magnetic core assembly, wherein the winding assembly is arranged on the framework in a surrounding mode, and the magnetic core assembly is connected with the framework; and
the transformer module comprises an insulation base, the insulation base comprises an insulation shell and pin assemblies, the pin assemblies are arranged on the insulation shell, a containing cavity is formed in the insulation shell, the transformer module is contained in the containing cavity, the winding assemblies are respectively connected with the pin assemblies, and the insulation shell is used for increasing the distance between the pin assemblies and the magnetic core assembly.
2. The high insulation small volume type transformer of claim 1, wherein the winding assembly comprises a primary winding and a secondary winding, the primary winding is disposed around the bobbin, the secondary winding is disposed around the primary winding, and the primary winding and the secondary winding are respectively connected to the pin assembly.
3. The high insulation small volume transformer of claim 2, wherein the pin assembly comprises a first pin and a second pin, the first pin and the second pin are respectively disposed at two sides of the insulation housing, the primary winding is connected to the first pin, and the secondary winding is connected to the second pin.
4. The high-insulation small-volume transformer according to claim 3, wherein the bobbin comprises a winding post, a through hole is formed on the winding post, the magnetic core assembly is disposed through the through hole, and the winding assembly is disposed around the winding post.
5. The high insulation small volume type transformer of claim 4, wherein the bobbin further comprises a first limiting plate and a second limiting plate, the first limiting plate is disposed on one end of the winding post, the second limiting plate is disposed on the other end of the winding post, and the first limiting plate and the second limiting plate are used for limiting the winding assembly.
6. The high-insulation small-volume transformer according to claim 5, wherein the magnetic core assembly comprises a first magnetic core and a second magnetic core, the first magnetic core is provided with a first connecting post, the second magnetic core is provided with a second connecting post, the first connecting post is inserted into the through hole, the second connecting post is also inserted into the through hole, and one end of the first connecting post abuts against one end of the second connecting post.
7. A high-insulation small-volume transformer according to claim 6, wherein the insulation casing comprises an insulation bottom plate and an insulation baffle plate, the insulation baffle plate is disposed around the insulation bottom plate, the receiving cavity is located on the insulation bottom plate, and the insulation baffle plate is used for increasing the distance between the pin assembly and the magnetic core assembly.
8. The transformer of claim 7, wherein a first insulation boss and a second insulation boss are disposed on the insulation base plate, the first insulation boss is disposed opposite to the second insulation boss, the transformer module is located between the first insulation boss and the second insulation boss, and one end of the first pin is disposed on the first insulation boss and one end of the second pin is disposed on the second insulation boss.
9. A high insulation small volume transformer according to any one of claims 1-8, wherein the transformer module further comprises an insulating adhesive tape, and the insulating adhesive tape is adhered around the winding assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211618218.4A CN115762972A (en) | 2022-12-15 | 2022-12-15 | High-insulation small-volume transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211618218.4A CN115762972A (en) | 2022-12-15 | 2022-12-15 | High-insulation small-volume transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115762972A true CN115762972A (en) | 2023-03-07 |
Family
ID=85346200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211618218.4A Pending CN115762972A (en) | 2022-12-15 | 2022-12-15 | High-insulation small-volume transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115762972A (en) |
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2022
- 2022-12-15 CN CN202211618218.4A patent/CN115762972A/en active Pending
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