A protective housing for ACDC power module

Abstract

The utility model relates to the technical field of power module protection, and in particular to a protective shell for an ACDC power module, comprising an outer shell, a power module body is installed inside the outer shell, an insulating thermal pad is bonded to the lower surface of the power module body, a heat absorbing plate is fixed to the lower surface of the insulating thermal pad, one end of the heat absorbing plate passes through the outer wall of the power module body and a cold plate is fixed, a semiconductor refrigeration plate is fixed on one side of the cold plate, a heat sink is fixed on the outer wall of the semiconductor refrigeration plate, and a mounting plate is fixed on one side of the heat sink by screws. In the utility model, the heat generated by the power module body is absorbed by the insulating thermal pad, and the heat is transferred to the heat absorbing plate. The cooling surface of the semiconductor refrigeration plate cools the cold plate, so that the cold plate cools the heat absorbing plate, and indirectly dissipates the heat from the power module body. There is no need to open holes in the protective shell for heat dissipation, thereby reducing the possibility of dust entering.

Description

Technical Field

[0001] The utility model relates to the technical field of power module protection, in particular to a protective shell for an ACDC power module. Background Art

[0002] The protective shell used by the ACDC power module mainly plays the role of protecting and fixing the power module, ensuring that the power module can operate stably during operation, and preventing external factors from damaging the module. The protective shell should have a certain heat dissipation performance. The power module will generate a certain amount of heat during operation. If the heat cannot be dissipated in time, it may cause the module temperature to rise, affecting its performance or even causing damage.

[0003] The existing protective housing of the module power supply works in a high temperature or sunshine environment for a long time, and the plastic housing undergoes thermal deformation and aging.

[0004] In the existing patent, the problem of easy aging is solved by replacing the protective shell material with aluminum alloy and the cover material with glass fiber epoxy resin. However, the power supply is set in a sealed shell and the internal air cannot circulate, resulting in the heat generated when the power supply is running cannot be dissipated in time, reducing the service life of the power supply. In view of this, a protective shell for an ACDC power supply module is provided to overcome the above defects. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a protective shell for an ACDC power module.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a protective shell for an ACDC power supply module, comprising an outer shell, a power supply module body is installed inside the outer shell, an insulating thermal pad is bonded to the lower surface of the power module body, a heat absorbing plate is fixed to the lower surface of the insulating thermal pad, one end of the heat absorbing plate passes through the outer wall of the power module body and is fixed with a cold conducting plate, a semiconductor refrigeration plate is fixed on one side of the cold conducting plate, a heat sink is fixed on the outer wall of the semiconductor refrigeration plate, a mounting plate is fixed on one side of the heat sink by screws, and three heat dissipation fans are installed inside the mounting plate.

[0007] As a further description of the above technical solution: two installation grooves are provided at the upper end of the outer shell, a protective cover is connected to the top of the outer shell, and two clips slidingly connected to the installation grooves are fixed to the lower end of the protective cover. The clips on the protective cover are aligned with the installation grooves, and the protective cover is pushed in the horizontal direction to connect the protective cover and the outer shell.

[0008] As a further description of the above technical solution: four fixing bolts are installed on the upper end of the protective cover, and the ends of the four fixing bolts are threadedly connected to the fixing grooves opened on the outer shell. By tightening the fixing bolts, the fixing bolts and the fixing grooves are threadedly connected, thereby fixing the protective cover.

[0009] As a further description of the above technical solution: four mounting columns are fixed in the vertical direction at the lower end of the outer shell, and threaded tubes are placed inside the four mounting columns. The power module body is placed on the insulating thermal pad so that the positioning holes on the power module body match the mounting columns, thereby positioning the power module body.

[0010] As a further description of the above technical solution: the internal thread connection of the threaded tube is connected with a connecting screw that penetrates the inside of the power module body, and the connecting screw and the threaded tube are threadedly connected to limit and fix the power module body, thereby reducing the horizontal displacement of the power module body.

[0011] As a further description of the above technical solution: a fixing plate is fixed to the lower end of the threaded tube, and two limiting rings are fixed to the inner walls of the four mounting columns. The fixing plate arranged on the threaded tube can limit the threaded tube in cooperation with the limiting ring to prevent the threaded tube from extending too much.

[0012] As a further description of the above technical solution: a tension spring is fixed at the lower end of the four mounting columns, and the end of the tension spring is fixedly connected to the fixed plate. When the tension spring is stretched, it can provide tension to the fixed plate, so that the threaded tube tightens the power module body, so that the lower surface of the power module body can better contact with the insulating thermal pad, thereby improving the thermal conductivity effect.

[0013] The utility model has the following beneficial effects:

[0014] The utility model designs a protective shell for an ACDC power module. The heat generated by the power module body is absorbed by an insulating thermal pad, and the heat is transferred to a heat absorbing plate. The cooling surface of the semiconductor refrigeration plate cools the cold plate, so that the cold plate cools the heat absorbing plate, and indirectly dissipates the heat of the power module body. There is no need to open holes in the protective shell for heat dissipation, which reduces the possibility of dust entering. The heat dissipation fan on the installation plate is used for blowing heat, thereby increasing the service life of the semiconductor refrigeration plate.

[0015] The utility model designs a protective shell for an ACDC power module. The card strip on the protective cover is aligned with the installation groove, the protective cover is pushed in the horizontal direction, the protective cover and the shell body are connected, and the fixing bolts are tightened so that the fixing bolts and the fixing grooves are threadedly connected, thereby fixing the protective cover; under the action of the tension spring being stretched, a pulling force can be provided to the fixing plate, so that the threaded tube tightens the power module body, so that the lower surface of the power module body can better contact with the insulating thermal pad, thereby improving the thermal conductivity effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 It is a schematic diagram of the cross-sectional structure of the outer shell of the utility model;

[0018] Figure 3 It is a schematic diagram of the cross-sectional structure of the installation column of the utility model;

[0019] Figure 4 For this utility model Figure 1 Enlarged view of point A in the middle.

[0020] Legend:

[0021] 1. Outer shell; 2. Power module body; 3. Insulating thermal pad; 4. Heat absorbing plate; 5. Cold conduction plate; 6. Semiconductor refrigeration plate; 7. Heat sink; 8. Mounting plate; 9. Cooling fan; 10. Mounting slot; 11. Protective cover; 12. Clip strip; 13. Fixing bolt; 14. Fixing slot; 15. Mounting column; 16. Connecting screw; 17. Threaded pipe; 18. Fixing plate; 19. Limiting ring; 20. Tension spring. DETAILED DESCRIPTION

[0022] Reference Figure 1-Figure 4The utility model provides a protective shell for an ACDC power module: it includes a shell 1, a power module body 2 is installed inside the shell 1, an insulating thermal pad 3 is bonded to the lower surface of the power module body 2, a heat absorbing plate 4 is fixed to the lower surface of the insulating thermal pad 3, one end of the heat absorbing plate 4 passes through the outer wall of the power module body 2 and is fixed with a cold plate 5, a semiconductor refrigeration sheet 6 is fixed on one side of the cold plate 5, a heat sink 7 is fixed on the outer wall of the semiconductor refrigeration sheet 6, a mounting plate 8 is fixed on one side of the heat sink 7 by screws, and three heat dissipation fans 9 are installed inside the mounting plate 8, the heat generated by the power module body 2 is absorbed by the insulating thermal pad 3, and the heat is transferred to the heat absorbing plate 4, the cooling surface of the semiconductor refrigeration sheet 6 cools the cold plate 5, so that the cold plate 5 cools the heat absorbing plate 4, and indirectly dissipates the heat of the power module body 2, and there is no need to open holes in the protective shell for heat dissipation, which reduces the situation of dust entering, and the heat dissipation fan 9 on the mounting plate 8 blows air to dissipate heat, thereby improving the service life of the semiconductor refrigeration sheet 6.

[0023] As a further implementation scheme of the above technical scheme: two installation grooves 10 are opened at the upper end of the outer shell 1, and a protective cover 11 is connected to the top of the outer shell 1. Two clips 12 slidingly connected to the installation grooves 10 are fixed to the lower end of the protective cover 11. The clips 12 on the protective cover 11 are aligned with the installation grooves 10, and the protective cover 11 is pushed in the horizontal direction to connect the protective cover 11 and the outer shell 1.

[0024] As a further implementation scheme of the above technical scheme: four fixing bolts 13 are installed on the upper end of the protective cover 11, and the ends of the four fixing bolts 13 are threadedly connected to the fixing grooves 14 opened on the outer shell 1. By tightening the fixing bolts 13, the fixing bolts 13 and the fixing grooves 14 are threadedly connected, thereby fixing the protective cover 11.

[0025] In a specific implementation, before using the protective housing for the ACDC power module, first place the housing 1 in a suitable position, then place the power module body 2 on the insulating thermal pad 3, and then fix the power module body 2, align the clip 12 on the protective cover 11 with the mounting groove 10, push the protective cover 11 horizontally, connect the protective cover 11 and the housing 1, and then tighten the fixing bolts 13 so that the fixing bolts 13 and the fixing grooves 14 are threadedly connected, thereby fixing the protective cover 11. Heat will be generated when the power module body 2 is running. The heat is absorbed by the insulating thermal pad 3 and then transferred to the heat absorbing plate 4. The cooling surface of the semiconductor refrigeration plate 6 cools the cold plate 5. Since the ends of the cold plate 5 and the heat absorbing plate 4 are connected, the cold plate 5 cools the heat absorbing plate 4, thereby indirectly dissipating the heat of the power module body 2. There is no need to open holes in the protective shell for heat dissipation, which reduces the possibility of dust entering. The heat sink 7 can absorb the heat generated by the semiconductor refrigeration plate 6 during operation, and the heat dissipation fan 9 on the mounting plate 8 is used to blow air to dissipate the heat, thereby increasing the service life of the semiconductor refrigeration plate 6.

[0026] As a further implementation scheme of the above technical scheme: four mounting columns 15 are fixed in the vertical direction at the lower end of the outer shell 1, and threaded tubes 17 are arranged inside the four mounting columns 15. The power module body 2 is placed on the insulating thermal pad 3, so that the positioning holes on the power module body 2 match the mounting columns 15, thereby positioning the power module body 2.

[0027] As a further implementation scheme of the above technical scheme: the internal thread of the threaded tube 17 is connected with a connecting screw 16 that penetrates the inside of the power module body 2, and the connecting screw 16 and the threaded tube 17 are threadedly connected to limit and fix the power module body 2, thereby reducing the horizontal displacement of the power module body 2.

[0028] As a further implementation scheme of the above technical scheme: a fixing plate 18 is fixed to the lower end of the threaded tube 17, and two limiting rings 19 are fixed to the inner walls of the four mounting columns 15. The fixing plate 18 arranged on the threaded tube 17 and the limiting ring 19 can limit the threaded tube 17 in cooperation with the limiting ring 19 to prevent the threaded tube 17 from extending too much.

[0029] As a further implementation scheme of the above technical scheme: tension springs 20 are fixed at the lower ends of the four mounting columns 15, and the ends of the tension springs 20 are fixedly connected to the fixing plate 18. When the tension springs 20 are stretched, they can provide tension to the fixing plate 18, so that the threaded tube 17 tightens the power module body 2, so that the lower surface of the power module body 2 can better contact with the insulating thermal pad 3, thereby improving the thermal conductivity effect.

[0030] During specific implementation, the positioning hole on the power module body 2 is aligned and matched with the mounting column 15, and then the connecting screw 16 and the threaded tube 17 are used for threaded connection, so as to limit and fix the power module body 2, and reduce the horizontal displacement of the power module body 2. When the connecting screw 16 is turned, the threaded tube 17 can move vertically, thereby pulling the tension spring 20 to move, and the fixing plate 18 set on the threaded tube 17 can limit the threaded tube 17 with the cooperation of the limiting ring 19 to prevent the threaded tube 17 from extending too much. Under the action of the tension spring 20 being stretched, the fixing plate 18 can provide tension, so that the threaded tube 17 tightens the power module body 2, so that the lower surface of the power module body 2 can better contact with the insulating thermal pad 3.

[0031] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A protective housing for an ACDC power module, comprising an outer housing (1), a power module body (2) being installed inside the outer housing (1), characterized in that: An insulating thermal pad (3) is bonded to the lower surface of the power module body (2), a heat absorbing plate (4) is fixed to the lower surface of the insulating thermal pad (3), one end of the heat absorbing plate (4) passes through the outer wall of the power module body (2) and is fixed with a cold conducting plate (5), one side of the cold conducting plate (5) is fixed with a semiconductor cooling plate (6), the outer wall of the semiconductor cooling plate (6) is fixed with a heat sink (7), one side of the heat sink (7) is fixed with a mounting plate (8) by screws, and three heat dissipation fans (9) are installed inside the mounting plate (8).

2. The protective housing for an ACDC power module according to claim 1, characterized in that: The upper end of the outer shell (1) is provided with two installation grooves (10), the upper part of the outer shell (1) is connected with a protective cover (11), and the lower end of the protective cover (11) is fixed with two clips (12) which are slidably connected with the installation grooves (10).

3. The protective housing for an ACDC power module according to claim 2, characterized in that: Four fixing bolts (13) are installed on the upper end of the protective cover (11), and the ends of the four fixing bolts (13) are all threadedly connected to fixing grooves (14) provided on the outer shell (1).

4. The protective housing for an ACDC power module according to claim 1, characterized in that: Four mounting columns (15) are fixed in a vertical direction at the lower end of the interior of the outer shell (1), and threaded tubes (17) are arranged inside the four mounting columns (15).

5. The protective housing for an ACDC power module according to claim 4, characterized in that: The internal threads of the threaded tube (17) are connected to connecting screws (16) that penetrate the interior of the power module body (2).

6. The protective housing for an ACDC power module according to claim 4, characterized in that: A fixing plate (18) is fixed to the lower end of the threaded tube (17), and two limiting rings (19) are fixed to the inner walls of the four mounting columns (15).

7. The protective housing for an ACDC power module according to claim 6, characterized in that: A tension spring (20) is fixed to the lower end of each of the four mounting columns (15), and the end of the tension spring (20) is fixedly connected to the fixing plate (18).

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