A heat dissipation connecting structure of a power module

Abstract

The utility model relates to power module technical field discloses a heat dissipation connecting structure of power module, including square frame, the bottom front side of square frame is provided with support ring, the top of support ring is provided with spraying mechanism, the spraying mechanism is used for daubing silicon grease, the top of square frame is close to the place of setting up balance mechanism in the middle, balance mechanism is used for self -adaptation regulation pressure, the top of square frame all sets up a plurality of support mechanism around, the spraying mechanism includes connecting block, the top of connecting block with square frame's bottom front side fixed connection. In the utility model, the knob will drive the bidirectional screw rod to rotate, the square frame will drive the sliding block to slide along the surface of the limiting rod, until sliding to the uppermost end, press the piston cover, piston cover will drive the piston head at the time, slide down, has realized the effect of replacing silicon grease to the module under the condition of not disassembling the heat dissipation structure.

Description

Technical Field

[0001] This utility model relates to the field of power module technology, and in particular to a heat dissipation connection structure for a power module. Background Technology

[0002] Power modules are core components of power electronic systems, integrating power semiconductor devices, drive circuits, protection circuits, and heat dissipation structures. They can efficiently convert and control electrical energy and are widely used in new energy vehicles, photovoltaic inverters, and industrial motor drives. By combining high-voltage power conversion with low-voltage signal control, they significantly improve the reliability and integration of power equipment. Their performance directly affects the efficiency and stability of the entire system. They feature high power density, fast switching speed, and good heat dissipation capabilities. With the development of the new energy industry, power modules are evolving towards miniaturization, high frequency, and intelligence. Automotive-grade modules need to meet stringent temperature cycling and vibration requirements, while photovoltaic modules focus more on improving conversion efficiency.

[0003] The heat dissipation connection structure of a power module is crucial for its stable operation. It is primarily responsible for efficiently transferring the heat generated during module operation to the heat sink. Direct bonding uses a thermal interface material to ensure tight contact between the module substrate and the heat sink, reducing contact thermal resistance. However, without a stable thermally conductive medium to transfer heat to the copper pipes, heat dissipation will be ineffective. With technological advancements, silicone grease, as a paste-like thermally conductive medium, can tightly adhere to the microscopic unevenness of the two contact surfaces, allowing heat to be transferred more smoothly from the module to the heat sink. Typically, a suitable amount of silicone grease is first squeezed onto the surface of the heat sink or module substrate, and then spread using a scraper, spatula, or specialized applicator in straight, spiral, and crisscross motions. Uneven application of force should be avoided to prevent localized over-thickness or under-thickness, and air bubbles should be prevented from entering. However, this application method requires disassembling the heat sink mechanism for application and reassembling it afterward. Repeated disassembly and compression can easily cause the power module to be bumped, thus affecting its subsequent performance. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a heat dissipation connection structure for a power module, aiming to improve the problem in the prior art that the heat dissipation mechanism needs to be disassembled for coating, and then reinstalled after coating. Repeated disassembly and compression can easily cause the power module to be bumped, thus affecting the subsequent use effect.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a heat dissipation connection structure for a power module, including a square frame, a support ring provided on the bottom front side of the square frame, a spraying mechanism provided on the top of the support ring, the spraying mechanism being used to apply silicone grease, a balancing mechanism provided near the middle of the top of the square frame, the balancing mechanism being used to adaptively adjust the pressure, and multiple support mechanisms provided around the top of the square frame.

[0006] The spraying mechanism includes a connecting block, the top of which is fixedly connected to the bottom front side of the square frame. A rotating plate is rotatably connected to the bottom of the connecting block, and a rotating plate is rotatably connected to the other end of the rotating plate. Multiple side baffles are rotatably connected to the left and right sides of the rotating plate. A sliding plate is fixedly connected to the front side of the side baffle. A bidirectional threaded rod is threaded between adjacent sliding plates. A knob is fixedly connected to the left side of the bidirectional threaded rod. A piston assembly and a limit assembly are provided on the rear side of the square frame.

[0007] As a further description of the above technical solution:

[0008] The balancing mechanism includes multiple locking posts, the bottom of which is fixedly connected to the top of a square frame. The outer wall of each locking post is slidably connected to a locking plate. Sliding frames are fixedly connected between adjacent locking plates. Multiple support rods are fixedly connected inside each sliding frame. Multiple fixing plates are fixedly connected to the top of each support rod. A sliding component is provided at the bottom of each fixing plate.

[0009] As a further description of the above technical solution:

[0010] The limiting component includes a sliding block, the front side of which is fixedly connected to the rear side of the square frame. A limiting rod is slidably connected to the inner wall of the sliding block. A ring is fixedly connected to the top left side of the limiting rod, and a locking post is slidably connected to the top right side of the ring.

[0011] As a further description of the above technical solution:

[0012] The piston assembly includes a piston cylinder, the outer wall of which is slidably connected to the inner wall of an annulus, a piston head slidably connected to the inner wall of the piston cylinder, a piston column fixedly connected to the top of the piston head, and a piston cap fixedly connected to the top of the piston column.

[0013] As a further description of the above technical solution:

[0014] The sliding assembly includes a sliding column, the outer wall of which is slidably connected to the bottom of a fixed plate. A spring is slidably connected to the outer wall of the sliding column, and a small copper sheet is fixedly connected to the bottom of the spring. The top of the small copper sheet is fixedly connected to the bottom of the sliding column near the middle.

[0015] As a further description of the above technical solution:

[0016] The support mechanism includes multiple threaded sleeves, the upper ends of the outer walls of the multiple threaded sleeves are slidably connected to the bottom perimeter of the square frame, a spring is slidably connected to the outer wall of the threaded sleeve, and a bolt is threadedly connected to the top of the threaded sleeve.

[0017] As a further description of the above technical solution:

[0018] A copper-containing heat sink is slidably connected to the top of the square frame, and a heat dissipation tower is fixedly connected to the top of the copper-containing heat sink, which is used for heat dissipation.

[0019] As a further description of the above technical solution:

[0020] Each of the threaded sleeves has a base fixedly connected to its bottom. The top front side of the base is fixedly connected to the bottom of the support ring. The base is used to support the overall structure.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, when it is necessary to replace the thermal grease, the bolt is loosened. At this time, the square frame will slide on the threaded sleeve. At the same time, the knob is turned, and the knob will drive the bidirectional threaded rod to rotate. At this time, the bidirectional threaded rod will push the side baffles on both sides to squeeze inward. Then the side baffles squeeze the rotating plate one and rotating plate two, making them lift up. At the same time, the square frame will drive the sliding block to slide along the surface of the limit rod until it slides to the top. Press the piston cover. At this time, the piston cover will drive the piston column and piston head to slide down along the inner wall of the piston cylinder, spraying out the thermal grease inside the piston cylinder. This achieves the function of replacing the thermal grease of the module without disassembling the heat dissipation structure.

[0023] 2. In this utility model, when the module heats up and bulges, the module will squeeze the small copper sheet. At this time, the small copper sheet will push the sliding column upward and squeeze the spring one, causing it to deform. Meanwhile, the sliding column will move along the hole on the fixing plate. At this time, the sliding column will be in close contact with the module surface. When the small copper sheet is damaged and needs to be replaced, the clamping plate is lifted. At this time, the clamping plate will drive the sliding frame away from the clamping column two on the square frame, and then the small copper sheet can be disassembled and replaced. This realizes the function of adapting to the module surface and preventing damage to the module due to excessive compression. Attached Figure Description

[0024] Figure 1 This is a front perspective view of a heat dissipation connection structure for a power module proposed in this utility model.

[0025] Figure 2 This is a rear perspective view of a heat dissipation connection structure for a power module proposed in this utility model.

[0026] Figure 3 A partial structural exploded view of a square frame representing a heat dissipation connection structure for a power module proposed in this utility model;

[0027] Figure 4 A partial structural exploded view of the sliding frame of a heat dissipation connection structure for a power module proposed in this utility model;

[0028] Figure 5 This is a partial structural exploded view of the heat dissipation connection structure of a power module proposed in this utility model.

[0029] Figure 6 This is a partial structural exploded view of the limiting rod of the heat dissipation connection structure of the power module proposed in this utility model;

[0030] Figure 7 This is a partial structural exploded view of the piston cylinder of a power module heat dissipation connection structure proposed in this utility model.

[0031] Legend:

[0032] 1. Square frame; 2. Spraying mechanism; 201. Connecting block; 202. Rotating plate one; 203. Rotating plate two; 204. Side baffle; 205. Sliding plate; 206. Bidirectional threaded rod; 207. Knob; 208. Piston assembly; 2081. Piston cylinder; 2082. Piston head; 2083. Piston column; 2084. Piston cover; 209. Limiting assembly; 2091. Sliding block; 2092. Limiting rod; 2093. Ring ; 2094, Locking post one; 3, Balancing mechanism; 301, Locking post two; 302, Locking plate; 303, Sliding frame; 304, Support rod; 305, Fixing plate; 306, Sliding assembly; 3061, Sliding column; 3062, Spring one; 3063, Small copper sheet; 4, Support mechanism; 401, Threaded sleeve; 402, Spring two; 403, Bolt; 5, Support ring; 6, Copper-containing heat sink; 7, Base; 8, Heat sink tower. Detailed Implementation

[0033] 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.

[0034] Please see the appendix Figure 2 Appendix Figure 3 and attached Figure 5 An embodiment of this utility model is provided: a heat dissipation connection structure for a power module, including a square frame 1, a support ring 5 is provided on the bottom front side of the square frame 1, a spraying mechanism 2 is provided on the top of the support ring 5, the spraying mechanism 2 is used to apply silicone grease, a balancing mechanism 3 is provided near the middle of the top of the square frame 1, the balancing mechanism 3 is used to adaptively adjust the pressure, and multiple support mechanisms 4 are provided around the top of the square frame 1.

[0035] The spraying mechanism 2 includes a connecting block 201. The top of the connecting block 201 is fixedly connected to the bottom front side of the square frame 1. A rotating plate 202 is rotatably connected to the bottom of the connecting block 201. A rotating plate 203 is rotatably connected to the other end of the rotating plate 202. The rotating plate 202 and the rotating plate 203 can be raised and lowered in cooperation. Multiple side baffles 204 are rotatably connected to the left and right sides of the rotating plate 203. A sliding plate 205 is fixedly connected to the front side of the side baffle 204. A bidirectional threaded rod 206 is threaded between adjacent sliding plates 205. A knob 207 is fixedly connected to the left side of the bidirectional threaded rod 206, which can drive the bidirectional threaded rod 206 to rotate. A piston assembly 208 is provided on the rear side of the square frame 1. A limit assembly 209 is provided on the rear side of the square frame 1, which plays a limiting role.

[0036] Specifically, the device includes a rectangular frame 1. A support ring 5 is installed at the bottom front of the frame 1 to provide stable support. A multi-functional spraying mechanism 2 is located at the top of the support ring 5. The main function of the spraying mechanism 2 is to evenly and efficiently apply silicone grease to ensure a smooth application process. Near the center of the top of the frame 1, an intelligent balancing mechanism 3 is installed. This balancing mechanism 3 adaptively adjusts and maintains pressure balance within the system to ensure stable operation of the entire device. Furthermore, multiple support mechanisms 4 are installed around the top of the frame 1, providing a solid support foundation for the entire device. The spraying mechanism 2 includes a connecting block 201, the top of which connects to the frame 1... The bottom front of the rectangular frame 1 is connected by a sturdy fixed connection. The bottom of the connecting block 201 is connected to a rotating plate 202 by a rotating connection. The other end of the rotating plate 202 is also connected to a rotating plate 203 by a rotating connection. On the left and right sides of the rotating plate 203, multiple side baffles 204 are rotatably connected. The front part of these side baffles 204 is fixedly connected to a sliding plate 205. The adjacent sliding plates 205 are connected by a double-threaded rod 206 by a threaded connection. The left side of the double-threaded rod 206 is fixedly connected to a knob 207. A high-efficiency piston assembly 208 and a limit assembly 209 for limiting displacement are also provided at the rear of the rectangular frame 1 to ensure that the entire device is safe and reliable during operation.

[0037] Please see the appendix Figure 2 Appendix Figure 3 and attached Figure 4 The balancing mechanism 3 includes multiple locking posts 301, the bottom of which is fixedly connected to the top of the square frame 1. Locking plates 302 are slidably connected to the outer walls of the locking posts 301, and the locking posts 301 and locking plates 302 cooperate to fix them in place. Sliding frames 303 are fixedly connected between adjacent locking plates 302. Multiple support rods 304 are fixedly connected inside each sliding frame 303, improving overall stability. Multiple fixing plates 305 are fixedly connected to the tops of the support rods 304. The bottom of the fixing plates 305... The module is equipped with a sliding assembly 306, which includes a sliding column 3061. The outer wall of the sliding column 3061 is slidably connected to the bottom of the fixed plate 305. A spring 3062 is slidably connected to the outer wall of the sliding column 3061, providing stable elastic support. A small copper sheet 3063 is fixedly connected to the bottom of the spring 3062. The top of the small copper sheet 3063 near the middle is fixedly connected to the bottom of the sliding column 3061. Multiple small copper sheets 3063 can be raised and lowered independently to adapt to the surface of the module.

[0038] Specifically, the balancing mechanism 3 includes multiple locking posts 301. The bottoms of these locking posts 301 are all firmly connected to the top of the square frame 1 to ensure the stability of the overall structure. Each locking post 301 has a slidingly connected locking plate 302 on its outer wall. The locking plate 302 can slide smoothly during the sliding process. The adjacent locking plates 302 are all fixedly connected to a sliding frame 303, allowing it to move flexibly between the locking plates 302. Inside the sliding frame 303, multiple support rods 304 are fixedly connected. The top of each support rod 304 is fixedly connected to multiple fixing plates 305. The bottom of the fixing plate 305 is provided with a sliding component 3. 06. The sliding assembly 306 is mainly composed of a sliding column 3061. The outer wall of the sliding column 3061 is connected to the bottom of the fixed plate 305 by a sliding connection, ensuring that it can slide freely on the fixed plate 305. A spring 3062 is also slidably connected to the outer wall of the sliding column 3061. The function of the spring 3062 is to provide the necessary elastic force to maintain the stable position of the sliding column 3061. A small copper plate 3063 is fixedly connected to the bottom of the spring 3062. The top of the small copper plate 3063 near the middle is fixedly connected to the bottom of the sliding column 3061, ensuring that the entire sliding assembly 306 can maintain good coordination and stability during movement.

[0039] Please see the appendix Figure 3 Appendix Figure 6 and attached Figure 7 The limiting component 209 includes a sliding block 2091. The front side of the sliding block 2091 is fixedly connected to the rear side of the square frame 1. The inner wall of the sliding block 2091 is slidably connected to a limiting rod 2092, which plays a stable limiting role. A ring 2093 is fixedly connected to the top left side of the limiting rod 2092, and a locking post 2094 is slidably connected to the top right side of the ring 2093. The piston assembly 208 includes a piston cylinder 2081. The outer wall of the piston cylinder 2081 is slidably connected to the inner wall of the ring 2093. A piston head 2082 is slidably connected to the inner wall of the piston cylinder 2081. A piston column 2083 is fixedly connected to the top of the piston head 2082. The piston head 2082 and the piston column 2083 cooperate to extrude silicone grease. A piston cap 2084 is fixedly connected to the top of the piston column 2083.

[0040] Specifically, the limiting assembly 209 includes a sliding block 2091. The front part of the sliding block 2091 is tightly connected to the rear part of the square frame 1 by a fixed connection to ensure its positional stability. A limiting rod 2092 is slidably connected to the inner wall of the sliding block 2091. A ring 2093 is fixedly connected to the top left side of the limiting rod 2092. The top right side of the ring 2093 is slidably connected to the locking post 2094 to ensure its flexibility and stability during movement. The piston assembly 208 includes a piston cylinder 2081. The outer wall of piston cylinder 2081 is slidably connected to the inner wall of ring 2093, allowing piston cylinder 2081 to move smoothly inside ring 2093. Piston head 2082 is slidably connected to the inner wall of piston cylinder 2081, ensuring flexible movement of piston head 2082 inside piston cylinder 2081. A piston column 2083 is fixedly connected to the top of piston head 2082, and a piston cap 2084 is further fixedly connected to the top of piston column 2083, ensuring the stability and reliability of the entire piston assembly 208 during operation.

[0041] Please see the appendix Figure 1 Appendix Figure 2 and attached Figure 3 The support mechanism 4 includes multiple threaded sleeves 401. The upper ends of the outer walls of the multiple threaded sleeves 401 are slidably connected to the bottom perimeter of the square frame 1. A second spring 402 is slidably connected to the outer walls of the threaded sleeves 401. The second spring 402 can play a buffering role. A bolt 403 is threadedly connected to the top of the threaded sleeves 401. A copper heat sink 6 is slidably connected to the top of the square frame 1. A heat sink 8 is fixedly connected to the top of the copper heat sink 6. The heat sink 8 is used for heat dissipation. A base 7 is fixedly connected to the bottom of each of the multiple threaded sleeves 401. The front top of the base 7 is fixedly connected to the bottom of the support ring 5. The base 7 is used to support the overall structure.

[0042] Specifically, the support mechanism 4 includes threaded sleeves 401. The upper part of the outer wall of these threaded sleeves 401 is slidably connected to the bottom perimeter of the square frame 1, thereby ensuring that the support mechanism 4 can be stably combined with the square frame 1. Springs 402 are also slidably connected to the outer wall of the threaded sleeves 401, allowing the threaded sleeves 401 to expand and contract under external force. The top of the threaded sleeves 401 is fixed with bolts 403 by threaded connection. The presence of bolts 403 further enhances the stability of the support mechanism 4. At the top of the square frame 1, a copper heat sink 6 is installed by sliding connection. The top of the copper heat sink 6 is fixedly connected to a heat dissipation tower 8. The main function of the heat dissipation tower 8 is to dissipate heat, which can effectively dissipate the heat generated inside the square frame 1. The bottom of each threaded sleeve 401 is fixedly connected to a base 7. The front top of the base 7 is fixedly connected to the bottom of the support ring 5. The presence of the base 7 provides solid support for the entire structure, ensuring the stability and safety of the entire structure during operation.

[0043] Working principle: First, place the base 7 on the back of the plate. Then, place the second spring 402 on the outer wall of the threaded sleeve 401 and place the square frame 1 on the threaded sleeve 401. Then, fix it to the module for heat dissipation with the bolt 403. When it is necessary to replace the thermal paste, loosen the bolt 403. At this time, the square frame 1 will slide on the threaded sleeve 401. At the same time, turn the knob 207. Then the knob 207 will drive the bidirectional threaded rod 206 to rotate. At this time, the bidirectional threaded rod 206 will push the side baffles 204 on both sides to squeeze inward. Then the side baffles 204 squeeze the rotating plate 1 202 and the rotating plate 203, making them rise. At this time, the connecting block 201 drives the square frame 1 to rise. At the same time, the square frame 1 will drive the sliding block 2091 to slide along the surface of the limit rod 2092 until it slides to the top. This achieves the function of raising the square frame 1 without disassembly.

[0044] Remove the first locking pin 2094. At this time, the first locking pin 2094 is separated from the ring 2093. Then rotate the piston cylinder 2081 so that the other end of the piston cylinder 2081 is aligned with the top of the module. Press the piston cover 2084. At this time, the piston cover 2084 will drive the piston pin 2083 and the piston head 2082 to slide down the inner wall of the piston cylinder 2081, spraying out the thermal paste inside the piston cylinder 2081. This achieves the function of replacing the thermal paste of the module without disassembling the heat dissipation structure.

[0045] When the module heats up and bulges, it will compress the small copper sheet 3063. At this time, the small copper sheet 3063 will push the sliding post 3061 upward, and at the same time, the small copper sheet 3063 will compress the spring 3062, causing it to deform. Simultaneously, the sliding post 3061 will move along the hole on the fixing plate 305, and at this time, the sliding post 3061 will be in close contact with the module surface. When the small copper sheet 3063 is damaged and needs to be replaced, the clamping plate 302 is lifted. At this time, the clamping plate 302 will drive the sliding frame 303 away from the clamping post 301 on the square frame 1, and then the small copper sheet 3063 can be disassembled and replaced. This achieves the function of adapting to the module surface and preventing damage to the module due to excessive compression.

[0046] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. A heat dissipation connection structure for a power module, comprising a square frame (1), characterized in that: A support ring (5) is provided on the bottom front side of the square frame (1), and a spraying mechanism (2) is provided on the top of the support ring (5). The spraying mechanism (2) is used to apply silicone grease. A balancing mechanism (3) is provided near the middle of the top of the square frame (1). The balancing mechanism (3) is used to adaptively adjust the pressure. Multiple support mechanisms (4) are provided around the top of the square frame (1). The spraying mechanism (2) includes a connecting block (201). The top of the connecting block (201) is fixedly connected to the bottom front side of the square frame (1). A rotating plate (202) is rotatably connected to the bottom of the connecting block (201). A rotating plate (203) is rotatably connected to the other end of the rotating plate (202). Multiple side baffles (204) are rotatably connected to the left and right sides of the rotating plate (203). A sliding plate (205) is fixedly connected to the front side of the side baffle (204). A bidirectional threaded rod (206) is threaded between adjacent sliding plates (205). A knob (207) is fixedly connected to the left side of the bidirectional threaded rod (206). A piston assembly (208) is provided on the rear side of the square frame (1). A limit assembly (209) is provided on the rear side of the square frame (1).

2. The heat dissipation connection structure of a power module according to claim 1, characterized in that: The balancing mechanism (3) includes multiple locking pins (301), the bottom of which is fixedly connected to the top of the square frame (1). The outer wall of each locking pin (301) is slidably connected to a locking plate (302). Each of the multiple locking plates (302) is fixedly connected to a sliding frame (303). Each of the sliding frames (303) is fixedly connected to a multiple support rod (304). Each of the support rods (304) is fixedly connected to a multiple fixing plate (305) at the top. Each fixing plate (305) is provided with a sliding component (306) at the bottom.

3. The heat dissipation connection structure of a power module according to claim 1, characterized in that: The limiting component (209) includes a sliding block (2091), the front side of which is fixedly connected to the rear side of the square frame (1), and a limiting rod (2092) is slidably connected to the inner wall of the sliding block (2091). A ring (2093) is fixedly connected to the top left side of the limiting rod (2092), and a locking post (2094) is slidably connected to the top right side of the ring (2093).

4. The heat dissipation connection structure of a power module according to claim 1, characterized in that: The piston assembly (208) includes a piston cylinder (2081), the outer wall of the piston cylinder (2081) is slidably connected to the inner wall of the ring (2093), a piston head (2082) is slidably connected to the inner wall of the piston cylinder (2081), a piston column (2083) is fixedly connected to the top of the piston head (2082), and a piston cap (2084) is fixedly connected to the top of the piston column (2083).

5. The heat dissipation connection structure of a power module according to claim 2, characterized in that: The sliding assembly (306) includes a sliding column (3061), the outer wall of which is slidably connected to the bottom of the fixed plate (305), a spring (3062) is slidably connected to the outer wall of the sliding column (3061), a small copper sheet (3063) is fixedly connected to the bottom of the spring (3062), and the top of the small copper sheet (3063) near the middle is fixedly connected to the bottom of the sliding column (3061).

6. The heat dissipation connection structure of a power module according to claim 1, characterized in that: The support mechanism (4) includes multiple threaded sleeves (401), the upper ends of the outer walls of the multiple threaded sleeves (401) are slidably connected to the bottom periphery of the square frame (1), the outer walls of the threaded sleeves (401) are slidably connected to springs (402), and the top of the threaded sleeves (401) is threadedly connected to bolts (403).

7. The heat dissipation connection structure of a power module according to claim 1, characterized in that: The top of the square frame (1) is slidably connected to a copper heat sink (6), and the top of the copper heat sink (6) is fixedly connected to a heat sink (8), which is used for heat dissipation.

8. The heat dissipation connection structure of a power module according to claim 6, characterized in that: Each of the threaded sleeves (401) has a base (7) fixedly connected to its bottom. The top front side of the base (7) is fixedly connected to the bottom of the support ring (5). The base (7) is used to support the overall structure.

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