CN220306073U - High-frequency transformer heat radiation structure - Google Patents
High-frequency transformer heat radiation structure Download PDFInfo
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- CN220306073U CN220306073U CN202321986090.7U CN202321986090U CN220306073U CN 220306073 U CN220306073 U CN 220306073U CN 202321986090 U CN202321986090 U CN 202321986090U CN 220306073 U CN220306073 U CN 220306073U
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- heat
- frequency transformer
- radiator
- plate
- copper foil
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- 230000005855 radiation Effects 0.000 title claims description 3
- 238000004804 winding Methods 0.000 claims abstract description 34
- 230000017525 heat dissipation Effects 0.000 claims abstract description 33
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000011889 copper foil Substances 0.000 claims abstract description 28
- 238000009423 ventilation Methods 0.000 claims description 10
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 230000008021 deposition Effects 0.000 claims description 2
- 239000011148 porous material Substances 0.000 claims 1
- 230000001965 increasing effect Effects 0.000 abstract description 7
- 238000000151 deposition Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 230000007547 defect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000005347 demagnetization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003090 exacerbative effect Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Transformer Cooling (AREA)
Abstract
The utility model provides a heat dissipation structure of a high-frequency transformer, which comprises a radiator and a heat conducting copper foil, wherein the radiator is arranged at the top of the high-frequency transformer, the heat conducting copper foil is wrapped on the surface of a coil winding of the high-frequency transformer, a copper-deposition heat dissipation layer is plated on the surface of the radiator, and the heat conducting copper foil is connected with the copper-deposition heat dissipation layer. The high-frequency transformer directly conducts the heat of the coil winding to the radiator at the top of the high-frequency transformer through the heat conducting copper foil, the diameter of the coil winding is hardly increased, and the magnetic core directly conducts the heat to the radiator through the heat conducting column, so that the two heat-generating source coil windings and the magnetic core of the high-frequency transformer respectively conduct the heat to the radiator, and the radiating efficiency is improved; in addition, the radiator body is composed of two thin plates, namely a porous plate and a fan blade plate, compared with the traditional radiating fin, the radiator is lighter and thinner, the occupied space is smaller, and the porous plate and the fan blade plate of the radiator are provided with good radiating flow passages, so that the radiator can quickly exchange heat with external air.
Description
Technical Field
The utility model relates to the technical field of high-frequency transformer manufacturing, in particular to a heat dissipation structure of a high-frequency transformer.
Background
High frequency transformers are typically used in electronic circuits and electronic devices at operating frequencies above 20kHz, and due to the high operating frequencies of high frequency transformers, heat dissipation problems become one of the key factors limiting their power density and efficiency. The heat dissipation problem of high frequency transformers comes mainly from two aspects: the losses of the core and the losses of the coil windings. Losses in the core are mainly due to hysteresis and eddy current effects, which can lead to heating of the core and affect efficiency. The losses of the coil result from resistive and inductive effects and also from the generation of a large amount of heat. Because of the high operating frequency, the ac signal causes rapid magnetization and demagnetization of the core, which causes a large amount of eddy currents to be generated on the surface of the core, thereby exacerbating the heat generation of the core. Meanwhile, due to the inductance effect of the coil, the current can generate an effect similar to eddy current inside the coil, so that a large amount of heat can be generated on the surface of the coil.
The heat dissipation problem of the conventional high frequency transformer is usually solved by using a heat sink and a fan. However, the common aluminum radiating fins have common effects, and can obviously increase the area occupied by the circuit board, occupy limited internal space of the electronic equipment, and the defects of the fan are obvious, so that not only can the power loss be additionally increased, but also the fan can be commonly used together with the radiating fins, and the occupied space is larger.
Disclosure of Invention
Aiming at the defects of the background technology, the utility model provides a heat dissipation structure of a high-frequency transformer, which is used for solving the defects of large volume, unobvious effect and electric energy waste of the traditional heat dissipation structure of the high-frequency transformer in the background technology.
The utility model provides a heat dissipation structure of a high-frequency transformer, which comprises a radiator and a heat conducting copper foil, wherein the radiator is arranged at the top of the high-frequency transformer, the heat conducting copper foil is wrapped on the surface of a coil winding of the high-frequency transformer, a copper-deposition heat dissipation layer is plated on the surface of the radiator, and the heat conducting copper foil is connected with the copper-deposition heat dissipation layer.
Preferably, the radiator comprises a horizontal porous plate, and vertical ventilation holes are densely distributed on the porous plate;
the upper surface, the lower surface of the porous plate and the hole wall of the air hole are plated with copper deposition heat dissipation layers, and the heat conducting copper foil is welded on the lower surface of the porous plate.
Preferably, the radiator further comprises a horizontal fan blade plate, and the fan blade plate is arranged above the porous plate at intervals;
the fan blade plate is provided with a plurality of fan blades which are obliquely arranged.
Preferably, the magnetic core of the high-frequency transformer extends vertically, the coil winding is wound on the periphery of the magnetic core, the top of the heat conducting copper foil extends upwards to form at least two sections of connecting sections, and the top ends of the at least two sections of connecting sections are welded or bonded with the lower surface of the porous plate;
and a ventilation notch is arranged between at least two sections of connecting sections.
Preferably, the high-frequency transformer comprises a top seat and a base, the magnetic core is arranged between the top seat and the base, and a through groove for penetrating through the connecting section is formed in the top seat.
Preferably, the middle part of the radiator is provided with a sleeve, and the porous plate and the fan blade plate are arranged at the periphery of the sleeve;
the top of the magnetic core is connected with the bottom end of a heat conduction column, and the top of the heat conduction column is sleeved in the sleeve.
Preferably, the fan blades and porous plates have a roughened surface.
Preferably, the bottom of the porous plate is provided with a plurality of support columns, and the support columns are arranged at the top of the top seat.
Preferably, the top base includes a butterfly plate at the top of the coil winding, the butterfly plate having a narrow middle portion and wide ends, and a top surface portion of the coil winding being exposed at the periphery of the butterfly plate.
The beneficial effects of the utility model include: the heat of the coil winding is directly conducted to the radiator at the top of the high-frequency transformer through the heat conducting copper foil, so that the diameter of the coil winding is hardly increased; the radiator body is composed of two thin plates, namely a porous plate and a fan blade plate, and compared with the traditional radiating fin, the radiator is lighter and thinner and occupies smaller space; the magnetic core directly conducts heat to the radiator through the heat conducting column, so that the two large heat generating source coil windings of the high-frequency transformer and the magnetic core conduct heat to the radiator respectively, and the radiating efficiency is improved; the perforated plate and the fan blade plate of the radiator are structured to form a good heat dissipation flow channel, so that heat exchange can be performed with outside air rapidly.
Drawings
The utility model is described in detail below with reference to examples and figures, wherein:
fig. 1 is an assembly schematic diagram of a heat dissipation structure of a high frequency transformer and the high frequency transformer according to the present utility model.
Fig. 2 is an exploded view of the heat dissipating structure of the high frequency transformer and the high frequency transformer according to the present utility model.
Fig. 3 is a perspective view of a heat dissipating structure of a high frequency transformer according to the present utility model.
Fig. 4 is a bottom view of the heat dissipating structure of the high frequency transformer of the present utility model.
Reference numerals:
100-heat radiator, 101-heat conducting copper foil, 102-porous plate, 103-fan blade, 104-sleeve, 105-air gap, 106-ventilation hole, 107-fan blade, 108-support column, 109-connection section, 200-high frequency transformer, 201-coil winding, 202-footstock, 203-base, 204-magnetic core, 205-ventilation slot, 206-ventilation notch, 207-butterfly plate, 208-heat conducting column.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Thus, reference throughout this specification to one feature will be used in order to describe one embodiment of the utility model, not to imply that each embodiment of the utility model must be in the proper motion. Furthermore, it should be noted that the present specification describes a number of features. Although certain features may be combined together to illustrate a possible system design, such features may be used in other combinations not explicitly described. Thus, unless otherwise indicated, the illustrated combinations are not intended to be limiting.
The principles of the present utility model are described in detail below with reference to the drawings and examples.
The utility model provides a high-frequency transformer heat dissipation structure, as shown in fig. 1-4, which comprises a heat radiator 100 and a heat conducting copper foil 101, wherein the heat radiator 100 is arranged at the top of a high-frequency transformer 200, the heat conducting copper foil 101 is wrapped on the surface of a coil winding 201 of the high-frequency transformer 200, a copper-deposition heat dissipation layer (not shown in the drawing) is plated on the surface of the heat radiator 100, and the heat conducting copper foil 101 is connected with the copper-deposition heat dissipation layer.
The coil winding 201 includes a primary coil and a secondary coil wound around the magnetic core 204, and heat of the coil winding 201 is directly conducted to the heat sink 100 on top of the high frequency transformer 200 through the heat conductive copper foil 101, and the diameter of the coil winding 201 is hardly increased, i.e., only the thickness of the heat conductive copper foil 101 is increased at the periphery of the coil winding 201, without affecting the overall diameter of the high frequency transformer 200. The heat conducting copper foil 101 is not only used for heat conduction, but also forms a shielding layer on the periphery of the coil winding 201, so that interference to other elements is reduced. The heat sink 100 is mainly in heat exchange with an external air flow and thus is installed on top of the high frequency transformer 200.
In this embodiment, the main body of the radiator 100 is formed by two horizontally arranged thin plates, which is lighter and thinner than the conventional radiating fins and occupies a smaller space. In the two thin plates, a perforated plate 102 is arranged at the bottom, a fan blade plate 103 is arranged at the top, the perforated plate 102 is connected with the middle part of the fan blade plate 103 through a sleeve 104 with a downward opening, and an air gap 105 is reserved between the perforated plate 102 and the fan blade plate 103. The main materials of the porous plate 102 and the fan blade plate 103 are high-temperature resistant plastics, and the surfaces of the porous plate 102 and the fan blade plate are covered with copper-deposition heat dissipation layers. The copper-deposited heat dissipation layer is used for conducting heat and radiating heat to external airflow.
Vertical ventilation holes 106 are densely distributed on the porous plate 102, and a plurality of blades 107 which are obliquely arranged are arranged on the blade plate 103. The radiator 100 heats air around itself to generate an upward air flow, which causes the air pressure in the radiator 100 to decrease, and cool air outside under the influence of the low pressure enters the radiator 100 through the air gap 105 and the bottom of the vent hole to be replenished. The copper-deposited heat dissipation layer can continuously exchange heat with the air flow in the contact with the air flow. Because the porous plate 102 and the fan blade plate 103 are made of plastic, compared with metal materials, the self weight of the high-frequency transformer 200 is obviously reduced, the high-frequency transformer 200 is prevented from being light in weight, and the welding spots between the high-frequency transformer 200 and the circuit board are prevented from being unstable. The surface of the sleeve 104 is also provided with a copper-deposited heat dissipation layer, so that rapid heat conduction between the porous plate 102 and the fan blade plate 103 can be realized.
In this embodiment, the perforated plate 102 and the fan blade plate 103 are both in a disc shape, or may be designed as square according to needs, and the sleeve 104 is connected to the middle parts of the perforated plate 102 and the fan blade plate 103, and the sleeve 104 is further used for being connected to the high-frequency transformer 200 to support the perforated plate 102 and the fan blade plate 103. Each fan blade 107 of the fan blade 103 is obliquely arranged, so that the heat dissipation area of the fan blade 107 can be increased without increasing the thickness of the fan blade 103. In addition, the angled arrangement causes the updraft to be forced to turn as it passes over the fan blades 107, allowing more substantial contact between the air molecules and the fan blades 107 to increase heat transfer efficiency. To further increase the heat exchange efficiency of the heat sink 100, the fan blades 107 and the porous plate 102 have rough surfaces to increase the effective heat dissipation area.
In this embodiment, the heat sink 100 is mounted to the high frequency transformer 200 by a sleeve 104 and a plurality of support posts 108 located at the bottom of the perforated plate 102. The high-frequency transformer 200 comprises a top base 202 and a base 203, wherein one half of a magnetic core 204 is fixedly arranged at the bottom of the top base 202, the other half is arranged at the top of the base 203, and after the top base 202 and the base 203 are spliced, the magnetic core 204 divided into two halves is butted into a complete magnetic core 204. The complete magnetic core 204 extends vertically, and a coil winding 201 consisting of a primary coil and a secondary coil is wound around the periphery of the magnetic core 204. The heat conductive copper foil 101 is wrapped around the coil winding 201, absorbs heat of the coil winding 201 and exchanges heat with the outside air. The top of the heat conducting copper foil 101 extends upwards to form a connecting section 109, a through groove 205 is formed in the top seat 202, and the connecting section 109 penetrates through the through groove 205 and then is welded on the lower surface of the porous plate 102, so that connection with the copper-depositing heat dissipation layer is achieved. In order to accelerate heat conduction between the heat conductive copper foil 101 and the porous plate 102, the heat conductive copper foil 101 of the present embodiment is provided with connection sections 109 on both left and right sides, respectively, to be connected to the porous plate 102. Of course, more connection sections 109 may be provided on the heat conductive copper foil 101 as required, but ventilation gaps 206 are reserved between the connection sections 109, so that external air can enter the ventilation holes 106 from the bottom of the porous plate 102.
Four supporting columns 108 are arranged at the bottom of the porous plate 102 and are fixedly connected to the top base 202 in a threaded manner so as to ensure stable connection between the radiator 100 and the high-frequency transformer 200. The top base 202 includes a butterfly plate 207 positioned at the top of the coil winding 201, the butterfly plate 207 being narrow at the middle and wide at both ends, and a top surface portion of the coil winding 201 being exposed to the periphery of the butterfly plate 207, the exposed portion allowing the top surface of the coil winding 201 to radiate heat directly into the air. The top of the magnetic core 204 is connected with a heat conduction column 208, and the heat conduction column 208 is sleeved in the sleeve 104. The heat conducting post 208 can directly conduct the heat of the magnetic core 204 to the fan blade plate 103 and the perforated plate 102 through the sleeve 104, so as to accelerate the heat dissipation of the magnetic core 204.
The high-frequency transformer 200 comprises two large heat generating sources, namely a coil winding 201 and a magnetic core 204, wherein the coil winding 201 conducts heat to the radiator 100 through the heat conducting copper foil 101 on the surface of the coil winding, the magnetic core 204 conducts heat to the radiator 100 through the heat conducting column 208, and the coil winding 201 and the magnetic core 204 are respectively provided with main heat conducting channels between the coil winding and the radiator 100, so that the heat radiating speed of the high-frequency transformer 200 is improved.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (9)
1. The utility model provides a high frequency transformer heat radiation structure, includes radiator and heat conduction copper foil, the radiator sets up the top of high frequency transformer, the heat conduction copper foil parcel is in the coil winding surface of high frequency transformer, its characterized in that, the surface of radiator has plated copper-clad heat dissipation layer, the heat conduction copper foil with copper-clad heat dissipation layer is connected.
2. The high-frequency transformer heat dissipation structure as set forth in claim 1, wherein said heat sink comprises a horizontal perforated plate, said perforated plate being densely covered with vertical ventilation holes;
the upper surface, the lower surface and the pore walls of the air holes of the porous plate are plated with the copper deposition heat dissipation layer, and the heat conducting copper foil is welded on the lower surface of the porous plate.
3. The high frequency transformer heat dissipating structure of claim 2 wherein said heat sink further comprises a horizontal fan blade, said fan blade being spaced above said perforated plate;
the fan blade plate is provided with a plurality of fan blades which are obliquely arranged.
4. The heat dissipation structure of a high frequency transformer according to claim 3, wherein a magnetic core of the high frequency transformer extends vertically, the coil winding is wound around the magnetic core, the top of the heat conducting copper foil extends upwards to form at least two connecting sections, and the top ends of the at least two connecting sections are welded or adhered to the lower surface of the porous plate;
and a ventilation notch is arranged between the at least two sections of connecting sections.
5. The heat dissipation structure of a high-frequency transformer according to claim 4, wherein the high-frequency transformer comprises a top base and a base, the magnetic core is disposed between the top base and the base, and a through slot for passing through the connection section is formed in the top base.
6. The heat dissipation structure of high-frequency transformer according to claim 5, wherein a sleeve is arranged in the middle of the heat sink, and the porous plate and the fan blade plate are arranged on the periphery of the sleeve;
the top of the magnetic core is connected with the bottom end of a heat conduction column, and the top of the heat conduction column is sleeved in the sleeve.
7. The high frequency transformer heat dissipating structure of claim 6, wherein said fan blades and said perforated plate have roughened surfaces.
8. The heat dissipating structure of the high frequency transformer of claim 7, wherein a plurality of support columns are provided at the bottom of the porous plate, and wherein the plurality of support columns are mounted at the top of the top base.
9. The high frequency transformer heat dissipating structure of claim 8, wherein said top mount comprises a butterfly plate positioned on top of said coil winding, said butterfly plate being narrow in the middle and wide at both ends, a top surface portion of said coil winding being exposed at the periphery of said butterfly plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321986090.7U CN220306073U (en) | 2023-07-25 | 2023-07-25 | High-frequency transformer heat radiation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321986090.7U CN220306073U (en) | 2023-07-25 | 2023-07-25 | High-frequency transformer heat radiation structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220306073U true CN220306073U (en) | 2024-01-05 |
Family
ID=89346168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321986090.7U Active CN220306073U (en) | 2023-07-25 | 2023-07-25 | High-frequency transformer heat radiation structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220306073U (en) |
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2023
- 2023-07-25 CN CN202321986090.7U patent/CN220306073U/en active Active
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