A heat dissipation device for a power module

Abstract

The utility model belongs to heat abstractor technical field relates to a heat abstractor of power module, including the shell, the two end faces in the shell correspond all are seted up with the L shape's sliding slot, the end face of two sliding slot bottom all are seted up with the circular arc's sink groove, every sink groove place all are through the first spring vertical sliding and is provided with the sliding block, two sliding blocks mutually far away one side all are fixedly connected with the baffle, the two end faces in the shell top end all are through the second spring horizontal sliding and are provided with the sealing plate in the corresponding, and the end of sealing plate swing abuts in the one side of corresponding baffle, the top of shell is provided with the heat dissipation board, and the bottom of heat dissipation board is rotatory and is provided with the heat conduction board, and the one end of heat conduction board far away from heat dissipation board is fixed and is penetrated with the sliding axle, and the both ends of sliding axle are slidingly seted up in two sliding slots. Advantages lie in: make heat conduction board adhere in the top surface of whole power module main part, make heat conduction board and power module main part's contact area bigger, make the good heat dissipation effect.

Description

Technical Field

[0001] This utility model belongs to the technical field of heat dissipation devices, and relates to a heat dissipation device for a power module. Background Technology

[0002] A power module is an industrial product composed of power electronic devices combined and encapsulated according to specific functions. Power modules generate heat during use. If the temperature is too high, it can cause abnormal internal structure, leading to thermal short circuits, and in severe cases, it can directly explode and be destroyed. Therefore, it is necessary to dissipate heat from the power module.

[0003] A heat-dissipating IPM module disclosed in Chinese patent CN202320904405.2 includes a housing, an IPM module body installed inside the housing, patches fixedly installed on both the left and right sides of the IPM module body, a heat-conducting column threadedly connected to the center of the top of the housing, threads on the side surface of the heat-conducting column, a threaded groove at the center of the top of the housing, the side surface of the heat-conducting column being threadedly connected to the inside of the threaded groove, and the bottom of the heat-conducting column abutting against the top of the IPM module body.

[0004] The module dissipates heat through contact between the bottom surface of the heat-conducting pillar and the module body. However, the contact area between the heat-conducting pillar and the module body is small, resulting in insufficient heat dissipation.

[0005] To address the aforementioned problems, this utility model proposes a heat dissipation device for a power module. Utility Model Content

[0006] To address the problems existing in the background technology, this utility model proposes a heat dissipation device for a power module.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: it includes an outer shell, and L-shaped grooves are provided on the two corresponding end faces inside the outer shell. Arc-shaped recesses are provided on the bottom end faces of the two grooves. A slider is vertically slidably arranged in each recess by a first spring. A baffle is fixedly connected to the side of the two sliders that are far apart from each other.

[0008] The top of the outer casing has two corresponding end faces with sealing plates that slide horizontally through a second spring. The ends of the sealing plates are movably abutted against one side of the corresponding baffle. The power module body is fixedly installed at the bottom of the outer casing.

[0009] The top of the outer casing is provided with a heat dissipation plate, and the bottom of the heat dissipation plate is rotatably provided with a heat conduction plate. A sliding shaft is fixedly inserted through the end of the heat conduction plate away from the heat dissipation plate, and the two ends of the sliding shaft are respectively slidably disposed in two sliding grooves.

[0010] Furthermore, a base plate is fixedly connected to the bottom surface of the outer casing, and the power module body is fixedly installed on the top of the base plate.

[0011] Furthermore, the chute is composed of a vertical section and a horizontal section from top to bottom, with the sink trough located at the end of the horizontal section away from the vertical section.

[0012] Furthermore, the outer casing has clearance grooves at both recessed areas, and the slider is vertically slidably connected to the interior of the corresponding clearance groove;

[0013] Each of the relief grooves has two vertically fixed shafts symmetrically fixed inside, and the slider is slidably sleeved on the corresponding two fixed shafts.

[0014] There are four first springs, which are respectively sleeved on four fixed shafts. The top end of the first spring is fixedly connected to the bottom of the slider, and the bottom end of the first spring is fixedly connected to the bottom surface of the relief groove.

[0015] Furthermore, each slider has an arc-shaped groove on its top surface, and the sliding shaft is movably disposed within the corresponding groove.

[0016] Furthermore, positioning grooves are provided on the two corresponding end faces inside the outer shell, and the positioning grooves pass through the vertical section of the slide groove;

[0017] The sealing plate is slidably disposed inside the positioning groove. Several second springs are provided, and the several second springs are fixedly connected to one side of the sealing plate at intervals. The other end of the several second springs is fixedly connected to the inner wall of the positioning groove.

[0018] Furthermore, a mounting plate is fixedly connected to the bottom of the heat sink, and a protruding plate is fixedly connected to one end of the bottom of the mounting plate. A rotating shaft rotatably passes through the protruding plate, and the end of the heat-conducting plate away from the sliding shaft is fixedly sleeved on the rotating shaft.

[0019] Torsion springs are fitted on the rotating shafts located on both sides of the protruding plate. The torsion springs are located inside the heat-conducting plate, with one end of the torsion spring fixedly connected to the heat-conducting plate and the other end of the torsion spring fixedly connected to the protruding plate.

[0020] Furthermore, the sealing plate is slidably disposed on the top of the mounting plate, and several mounting holes are spaced apart at both ends of the mounting plate and on the two sealing plates.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The heat dissipation device of this power module is equipped with a heat-conducting plate. One end of the heat-conducting plate is rotatably mounted on the heat dissipation plate. Through the cooperation of the sliding groove and the sliding shaft, the bottom end of the heat-conducting plate can be positioned inside the outer shell. Then, the heat-conducting plate can be rotated so that it fits against the top surface of the entire power module body, making the contact area between the heat-conducting plate and the power module body larger and improving the heat dissipation effect.

[0023] 2. The heat dissipation device of the power module is equipped with a baffle plate, which is fixed on the slider. After the sliding shaft is slid to the end of the slide groove, pressing down on the heat dissipation plate can drive the heat conduction plate to move downward, causing the sliding shaft to press down on the slider, causing the baffle plate to move downward and thus away from one end of the sealing plate. The second spring will push the sealing plate to the top of the mounting plate, thereby automatically sealing the top of the outer casing. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0025] Figure 2 This is a schematic diagram of the internal structure of the outer shell in this utility model;

[0026] Figure 3 This is a schematic diagram of the heat-conducting plate in this utility model;

[0027] Figure 4 This is a schematic diagram of the slider structure in this utility model;

[0028] Figure 5 This is a schematic diagram of the slide groove in this utility model.

[0029] In the diagram: 1. Base plate; 2. Power module body; 3. Outer shell; 4. Heat sink; 5. Rotating shaft; 6. Heat conduction plate; 7. Sliding shaft; 8. Sliding groove; 9. Sink; 10. Slider; 11. Fixed shaft; 12. First spring; 13. Baffle; 14. Second spring; 15. Sealing plate; 16. Relief groove; 17. Positioning groove; 18. Mounting plate. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] like Figures 1-5 As shown, the technical solution adopted by this utility model is as follows: a heat dissipation device for a power module, including a housing 3, and a power module body 2 is fixedly disposed at the bottom inside the housing 3.

[0032] A base plate 1 is fixedly connected to the bottom surface of the outer casing 3, and the power module body 2 is fixedly installed on the top of the base plate 1. The base plate 1 seals the bottom end of the outer casing 3, thereby encapsulating the power module body 2 inside the outer casing 3.

[0033] L-shaped grooves 8 are provided on the two corresponding end faces inside the outer casing 3, and arc-shaped recesses 9 are provided on the bottom end faces of the two grooves 8.

[0034] The chute 8 consists of a vertical section and a horizontal section from top to bottom, and the sink chute 9 is located at the end of the horizontal section away from the vertical section.

[0035] Each settling tank 9 has a slider 10 vertically sliding at its location via a first spring 12. The two settling tanks 9 are located between the two sliders 10.

[0036] The outer casing 3 has relief grooves 16 at both recesses 9. The slider 10 is vertically slidably connected to the inside of the corresponding relief groove 16.

[0037] Each clearance groove 16 has two vertically fixed shafts 11 symmetrically fixed inside, and the slider 10 is slidably sleeved on the corresponding two fixed shafts 11. The movement of the slider 10 is positioned by the cooperation of the two fixed shafts 11.

[0038] Four first springs 12 are provided, and the four first springs 12 are respectively sleeved on the four fixed shafts 11. This ensures that each clearance groove 16 is provided with two first springs 12.

[0039] The top end of the first spring 12 is fixedly connected to the bottom of the slider 10, and the bottom end of the first spring 12 is fixedly connected to the bottom surface of the relief groove 16. In the initial state, the first spring 12 pushes the slider 10 upward, so that the top surface of the slider 10 is flush with the bottom surface of the horizontal section of the groove 8.

[0040] Each of the two sliders 10 has a baffle 13 fixedly connected to its opposite side. This allows the sliders 10 to move the baffles 13.

[0041] Sealing plates 15 are horizontally slidably disposed on two corresponding end faces inside the top of the outer casing 3 via second springs 14. The ends of the sealing plates 15 are movably abutted against one side of the corresponding baffles 13. The baffles 13 block the sealing plates 15.

[0042] Positioning grooves 17 are provided on two corresponding end faces inside the outer casing 3, and the positioning grooves 17 pass through the vertical section of the sliding groove 8. The sealing plate 15 is slidably disposed inside the positioning grooves 17. The positioning grooves 17 position the sealing plate 15.

[0043] Several second springs 14 are provided. Several second springs 14 are fixedly connected to one side of the sealing plate 15 at intervals, and the other end of several second springs 14 are fixedly connected to the inner wall of the positioning groove 17. In the initial state, the second springs 14 push the sealing plate 15 to slide outward of the positioning groove 17.

[0044] A heat sink 4 is provided on the top of the outer casing 3. The heat sink 4 is U-shaped. Several heat sink fins are fixedly installed at intervals inside the heat sink 4.

[0045] A heat-conducting plate 6 is rotatably mounted on the bottom of the heat sink 4, and a sliding shaft 7 is fixedly inserted through the end of the heat-conducting plate 6 away from the heat sink 4. The two ends of the sliding shaft 7 are slidably mounted in two sliding grooves 8. The heat-conducting plate 6 is positioned inside the outer casing 3 by the cooperation of the sliding shaft 7 and the sliding grooves 8.

[0046] A mounting plate 18 is fixedly connected to the bottom of the heat sink 4, and a protruding plate is fixedly connected to one end of the bottom of the mounting plate 18. A rotating shaft 5 passes through the protruding plate, and the end of the heat-conducting plate 6 away from the sliding shaft 7 is fixedly sleeved on the rotating shaft 5. The rotating shaft 5 cooperates with the heat-conducting plate 6 to facilitate the rotation of the heat-conducting plate 6 at the bottom of the heat sink 4.

[0047] Torsion springs are fitted onto the rotating shafts 5 on both sides of the protruding plate, and the torsion springs are located inside the heat-conducting plate 6. One end of the torsion spring is fixedly connected to the heat-conducting plate 6, and the other end of the torsion spring is fixedly connected to the protruding plate. In the initial state, the torsion spring drives the heat-conducting plate 6 to rotate to a vertical position, so as to facilitate the movement of the heat-conducting plate 6.

[0048] Each slider 10 has an arc-shaped groove on its top surface, and the sliding shaft 7 is movably disposed in the corresponding groove. When the sliding shaft 7 slides in the sliding groove 8, it will slide to the top of the slider 10.

[0049] The sealing plate 15 is slidably disposed on the top of the mounting plate 18. Several mounting holes are provided at intervals on both ends of the mounting plate 18 and on the two sealing plates 15. When the sealing plate 15 slides to the top of the mounting plate 18, the mounting holes on the sealing plate 15 correspond one-to-one with the mounting holes on the mounting plate 18, and the sealing plate 15 can be fixed to the mounting plate 18 with bolts.

[0050] Working principle:

[0051] In use, move the power module body 2 inside the outer casing 3 and fix the bottom surface of the power module body 2 to the base plate 1. Then, apply a layer of thermally conductive silicone grease to the outer surface of the power module body 2.

[0052] Move the heat sink 4 so that the end of the heat conduction plate 6 away from the heat sink 4 extends into the outer casing 3. Align the two ends of the sliding shaft 7 with the tops of the two sliding grooves 8 one by one, and insert the two ends of the sliding shaft 7 into the vertical sections of the two sliding grooves 8 respectively.

[0053] Pushing the heat-conducting plate 6 downwards will cause the sliding shaft 7 to slide to the end of the horizontal section of the groove 8. Continue pushing the heat-conducting plate 6 horizontally to make the sliding shaft 7 slide towards the recess 9.

[0054] When the sliding shaft 7 slides to the top of the recess 9, the heat-conducting plate 6 can no longer slide, and the sliding shaft 7 is also located at the top of the slider 10. Rotate the heat-conducting plate 6 to make it horizontal; rotate the heat sink 4 to make it horizontal, and drive the torsion spring to twist. At this time, the mounting plate 18 is located inside the outer casing 3, and the bottom surface of the heat sink 4 is at a distance from the top surface of the outer casing 3.

[0055] Pressing down on the heat sink 4 causes the mounting plate 18, heat conduction plate 6, and slide shaft 7 to move downwards. The slide shaft 7 then presses down on the slider 10, causing the slider 10 to slide on the fixed shaft 11 and compress the first spring 12.

[0056] The slider 10 moves the baffle 13 downwards. When the bottom surface of the heat sink 4 moves to the top of the outer casing 3, the baffle 13 leaves the sealing plate 15. The second spring 14 pushes the sealing plate 15 to the top of the mounting plate 18, so that the mounting holes on the sealing plate 15 correspond one-to-one with the mounting holes on the mounting plate 18.

[0057] Loosen the heat sink 4. Due to the upward thrust of the first spring 12 on the slider 10, the slider 10 abuts against the bottom of the sliding shaft 7, thus fixing the heat conduction plate 6. Then, use bolts to fix the sealing plate 15 to the mounting plate 18 to seal the top of the outer casing 3.

[0058] When the power module body 2 is in use, the heat conduction plate 6 and the mounting plate 18 can transfer heat to the heat sink 4, so that the heat sink fins on the heat sink 4 can dissipate heat, thereby achieving the purpose of heat dissipation for the power module body 2.

[0059] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A heat dissipation device for a power module, characterized in that, Includes a shell (3), and L-shaped grooves (8) are provided on the two corresponding end faces inside the shell (3). Arc-shaped recesses (9) are provided on the bottom end faces of the two grooves (8). A slider (10) is vertically slidably provided at each recess (9) by a first spring (12). A baffle (13) is fixedly connected to the side of the two sliders (10) that are far apart from each other. The two end faces of the top of the outer shell (3) are each provided with a sealing plate (15) which is slidably arranged horizontally by a second spring (14). The end of the sealing plate (15) is movably abutted against one side of the corresponding baffle (13). The bottom of the outer shell (3) is fixedly provided with a power module body (2). The top of the outer shell (3) is provided with a heat sink (4), and the bottom of the heat sink (4) is provided with a heat conduction plate (6). A sliding shaft (7) is fixedly inserted through the end of the heat conduction plate (6) away from the heat sink (4). The two ends of the sliding shaft (7) are respectively slidably disposed in two sliding grooves (8).

2. The heat dissipation device for a power module according to claim 1, characterized in that: The bottom surface of the outer shell (3) is fixedly connected to the base plate (1), and the power module body (2) is fixedly installed on the top of the base plate (1).

3. The heat dissipation device for a power module according to claim 1, characterized in that: The chute (8) consists of a vertical section and a horizontal section from top to bottom, and the sink trough (9) is located at the end of the horizontal section away from the vertical section.

4. The heat dissipation device for a power module according to claim 1, characterized in that: The outer shell (3) has relief grooves (16) at two sinks (9) inside, and the slider (10) is vertically slidably connected to the inside of the corresponding relief groove (16); Each of the relief grooves (16) is symmetrically fixedly connected to two vertically placed fixed shafts (11), and the slider (10) is slidably sleeved on the corresponding two fixed shafts (11); There are four first springs (12), which are respectively sleeved on four fixed shafts (11). The top end of the first spring (12) is fixedly connected to the bottom of the slider (10), and the bottom end of the first spring (12) is fixedly connected to the bottom surface of the relief groove (16).

5. The heat dissipation device for a power module according to claim 1, characterized in that: Each slider (10) has an arc-shaped groove on its top surface, and the sliding shaft (7) is movably disposed in the corresponding groove.

6. The heat dissipation device for a power module according to claim 3, characterized in that: Positioning grooves (17) are provided on the two corresponding end faces inside the outer shell (3), and the positioning grooves (17) pass through the vertical section of the sliding groove (8); The sealing plate (15) is slidably disposed inside the positioning groove (17). Several second springs (14) are provided, and several second springs (14) are fixedly connected to one side of the sealing plate (15) at intervals. The other end of several second springs (14) is fixedly connected to the inner wall of the positioning groove (17).

7. The heat dissipation device for a power module according to claim 1, characterized in that: The bottom of the heat sink (4) is fixedly connected to an mounting plate (18), and one end of the bottom of the mounting plate (18) is fixedly connected to a protruding plate. A rotating shaft (5) is rotatably passed through the protruding plate. The end of the heat-conducting plate (6) away from the sliding shaft (7) is fixedly sleeved on the rotating shaft (5). Torsion springs are fitted on the rotating shafts (5) on both sides of the protruding plate. The torsion springs are located inside the heat-conducting plate (6). One end of the torsion spring is fixedly connected to the heat-conducting plate (6), and the other end of the torsion spring is fixedly connected to the protruding plate.

8. The heat dissipation device for a power module according to claim 7, characterized in that: The sealing plate (15) is slidably disposed on the top of the mounting plate (18), and a number of mounting holes are spaced apart on both ends of the mounting plate (18) and on the two sealing plates (15).

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