CN204994070U - Be used for switching power supply can even radiating heat radiation structure - Google Patents
Be used for switching power supply can even radiating heat radiation structure Download PDFInfo
- Publication number
- CN204994070U CN204994070U CN201520746108.5U CN201520746108U CN204994070U CN 204994070 U CN204994070 U CN 204994070U CN 201520746108 U CN201520746108 U CN 201520746108U CN 204994070 U CN204994070 U CN 204994070U
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- China
- Prior art keywords
- fin
- heat
- power tube
- circuit board
- conducting plate
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- Expired - Fee Related
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- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The utility model relates to a be used for switching power supply can even radiating heat radiation structure still can be used to among the heat dissipation scheme of power class product circuit board. Including printed circuit board, power tube, still include fin, set screw, heat -conducting plate, at least fixed power tube on the fin, coating one deck heat conduction silicone grease between fin and the power tube, a slice fin is arranged in at least printed circuit board is last, the pin and printed circuit board welding of fixed power tube on the fin, and the heat -conducting plate passes through set screw to be fixed on at least a slice fin, coating one deck heat conduction silicone grease between heat -conducting plate and the fin. Characteristics are: heat that the power tube produced passes through on the fin transmits the heat -conducting plate, is distributed away by the heat -conducting plate, and the temperature that reduces the local high -temperature region of printed circuit board effectual has like this strengthened the radiating effect of power tube, has improved electrical power unit's reliability and life.
Description
Technical field
The utility model relate to a kind of can the radiator structure of Homogeneouslly-radiating for Switching Power Supply, also can be used in the heat dissipation design of power source products circuit board.
Background technology
In Switching Power Supply design, often can use power tube, power tube heating is the problem often run in Power Management Design.Under Switching Power Supply normal operation, the heat condition of power tube directly has influence on the life-span of Switching Power Supply, and temperature is higher, reliability and the life-span lower, therefore need to carry out auxiliary heat dissipation to power tube, such as: adopt fan, fin heat radiation.
In a printed circuit board; often can run into the situation that a few group power coexists; in normal operating conditions; different high-temperature regions will be formed around power tube; as shown in Figure 3; Switching Power Supply printed circuit board (PCB) there is the power tube of two groups of diverse locations; when Switching Power Supply normally works; different high-temperature regions will be formed around power tube; corresponding printed circuit board (PCB) will form high-temperature region A and high-temperature region B; printed circuit board (PCB) inequality of being heated will produce stress deformation, and then causes scolding tin sealing-off, finally affects the life-span of Switching Power Supply.
Adopt fan cooling to add the complexity of circuit and structure, increase complete machine cost.Employing fin dispels the heat, and often increases the volume of fin because heat radiation is not enough, causes the weight of fin to increase, can cause local pressure to PCB, reduce the structural reliability of complete machine.
Summary of the invention
In view of the deficiency that prior art exists, the utility model provide a kind of can the radiator structure of Homogeneouslly-radiating for Switching Power Supply.
The utility model for achieving the above object, the technical scheme adopted is: a kind of can the radiator structure of Homogeneouslly-radiating for Switching Power Supply, comprise printed circuit board (PCB), power tube, it is characterized in that: also comprise fin, hold-down screw, heat-conducting plate, described fin is at least fixed a power tube, one deck heat-conducting silicone grease is applied between fin and power tube, at least a slice fin is placed on described printed circuit board (PCB), the pin of power tube fixing on fin welds with printed circuit board (PCB), described heat-conducting plate is fixed at least on a slice fin by hold-down screw, one deck heat-conducting silicone grease is applied between heat-conducting plate and fin.
Feature of the present utility model is: by the radiator structure of heat-conducting plate and groups of fins success rate pipe, heat-conducting plate and fin are almag or other metal materials possessing heat conductivility, can effective transferring heat.The effect of fin is delivered on heat-conducting plate by the heat of power tube, heat-conducting plate effect be the effect of thermal-arrest and heat radiation, and the uniformity of dispelling the heat can be ensured.The heat that all power tubes produce is delivered on heat-conducting plate by fin, distributed by heat-conducting plate, effectively reduce the temperature in district of printed circuit board (PCB) localized hyperthermia like this, enhance the radiating effect of power tube, improve reliability and the useful life of power-supply device.
Accompanying drawing explanation
Fig. 1 is the structural representation of utility model;
Fig. 2 is the decomposing schematic representation of the utility model structure;
Fig. 3 is the printed circuit board (PCB) schematic diagram that prior art is welded with power tube.
Embodiment
As shown in Figure 1 and Figure 2, a kind of can the radiator structure of Homogeneouslly-radiating for Switching Power Supply, comprise printed circuit board (PCB) 1, power tube 2, also comprise fin 3, heat-conducting plate 5.
Fin 3 is at least fixed a power tube 2, one deck heat-conducting silicone grease is applied between fin 3 and power tube 2, at least two fin 3 are placed on described printed circuit board (PCB) 1, pin and the printed circuit board (PCB) 1 of power tube 2 fixing on fin 3 are welded and fixed, heat-conducting plate 5 is fixed at least two fin 3 by hold-down screw 4, applies one deck heat-conducting silicone grease between heat-conducting plate 5 and fin 3.
The utility model embodiment is, fin 3 fixes two power tubes 2 by screw, one deck heat-conducting silicone grease is applied between fin 3 and power tube 2, two fin 3 being fixed with power tube 2 are placed on printed circuit board (PCB) 1 respectively, the pin of two power tubes 2 fixing respectively on two fin 3 welds with printed circuit board (PCB) 1, heat-conducting plate 5 is fixed on two fin 3 by hold-down screw 4, between heat-conducting plate 5 and two fin 3, applies one deck heat-conducting silicone grease.
Above-mentioned power tube 2 and the quantity of fin 3 need to determine depending on user.
Above-mentioned fin 3, heat-conducting plate 5 all adopt the hydronalium possessing thermal conductive resin or other metal materials possessing heat conductivility.
Claims (2)
1. one kind can the radiator structure of Homogeneouslly-radiating for Switching Power Supply, comprise printed circuit board (PCB) (1), power tube (2), it is characterized in that: also comprise fin (3), heat-conducting plate (5), described fin (3) is at least fixed a power tube (2), one deck heat-conducting silicone grease is applied between fin (3) and power tube (2), at least two fin (3) are placed on described printed circuit board (PCB) (1), pin and the printed circuit board (PCB) (1) of the upper fixing power tube (2) of fin (3) are welded and fixed, described heat-conducting plate (5) is fixed at least two fin (3), one deck heat-conducting silicone grease is applied between heat-conducting plate (5) and fin (3).
2. according to claim 1 a kind of can the radiator structure of Homogeneouslly-radiating for Switching Power Supply, it is characterized in that: described fin (3), heat-conducting plate (5) all adopt hydronalium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520746108.5U CN204994070U (en) | 2015-09-25 | 2015-09-25 | Be used for switching power supply can even radiating heat radiation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520746108.5U CN204994070U (en) | 2015-09-25 | 2015-09-25 | Be used for switching power supply can even radiating heat radiation structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204994070U true CN204994070U (en) | 2016-01-20 |
Family
ID=55128385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520746108.5U Expired - Fee Related CN204994070U (en) | 2015-09-25 | 2015-09-25 | Be used for switching power supply can even radiating heat radiation structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204994070U (en) |
-
2015
- 2015-09-25 CN CN201520746108.5U patent/CN204994070U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160120 Termination date: 20200925 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |