Power module detection device

Abstract

The utility model belongs to the technical field of electronic detection machinery, and relates to a power module detection device which comprises an installation frame, a storage battery and an electronic load, two plugs are installed on the installation frame, connecting lines are connected between the two plugs and the storage battery and between the two plugs and the electronic load, and a fixing rod is vertically installed on one side, close to the plugs, of the installation frame in a sliding mode. The plug is fixedly installed on the fixing rods, two testing rods are horizontally and slidably installed on the installation frame, the two ends of each testing rod are each provided with a fixing shell, the fixing shells are fixed to the installation frame, the testing rods and the fixing shells are vertically and slidably connected, a plurality of suction cups are evenly distributed and installed on the installation frame, and a fixing pipe is fixedly installed at the lower end of each suction cup. The fixing pipes are connected through a communication structure, a control structure is installed between the communication structure and the test rod, the test rod moves up and down to control the pressure in the communication structure through the control structure, and the suction cup can be automatically adjusted to adsorb or loosen the power module according to the height and motion state of the test rod.

Description

Technical Field

[0001] This utility model belongs to the field of electronic testing machinery technology, and relates to a power module testing device. Background Technology

[0002] A power module is a modular solution that integrates multiple power semiconductor devices and drive circuits, and is widely used in the field of power electronics. Its main functions include power conversion, power amplification, current control, and thermal management, enabling efficient power control and conversion tasks.

[0003] Chinese patent CN220933124U discloses a silicon carbide power module testing device, including a temperature detection and fixing mechanism and a power supply and load detection mechanism. The temperature detection and fixing mechanism includes a mounting frame, a first groove is provided inside the mounting frame, a first slider is provided inside the first groove, and a connecting block is fixedly connected to one side of the first slider.

[0004] In the aforementioned prior art, when the suction cup is used to attach and fix or release the power module to be tested, the power module needs to be pressed down or pulled up. Since the power module contains internal circuitry, this method can easily damage the power module. If an electric suction cup is used, the device may overheat due to poor heat dissipation during prolonged continuous operation. The heat released by the electric suction cup affects the temperature measurement results of the power detection module.

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

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

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A power module testing device includes a mounting frame, a battery, and an electronic load. Two plugs are mounted on the mounting frame, and connecting wires connect the two plugs to the battery and the electronic load. A fixed rod is vertically slidably mounted on the mounting frame near the plugs, and the plugs are fixedly mounted on the fixed rod. Two test rods are horizontally slidably mounted on the mounting frame, and a fixed shell is mounted at both ends of each test rod. The fixed shells are fixed to the mounting frame, and the test rods are vertically slidably connected to the fixed shells. Multiple suction cups are evenly distributed on the mounting frame, and a fixed tube is fixedly mounted at the lower end of each suction cup. The fixed tubes are connected by a connecting structure, and a control structure is installed between the connecting structure and the test rods. The pressure within the connecting structure is controlled by the control structure when the test rods move up and down.

[0008] Preferably, four support legs are fixedly installed at the lower end of the mounting frame, and two placement plates are horizontally fixedly installed on the support legs. The two placement plates are arranged in a vertical direction, and there are gaps between the two placement plates and between the upper placement plate and the bottom of the mounting frame. The battery is installed in the gap between the two placement plates, and the electronic load is installed in the gap between the upper placement plate and the mounting frame.

[0009] Preferably, two fixing seats are fixedly installed on the side of the mounting frame near the plug, with each fixing seat corresponding to one of the two plugs. Each fixing seat has a guide wheel rotatably installed on it, and the connecting wire passes around the corresponding guide wheel.

[0010] Preferably, the communication structure includes: a first connecting hole, wherein multiple first connecting holes are provided, multiple groups of suction cups are provided along a direction parallel to the axis of the test rod, the number of groups of the first connecting holes is the same as the number of groups of the suction cups and they correspond one-to-one, the axis of the first connecting hole is parallel to the axis of the test rod, and the first connecting hole connects to the fixing tube on the suction cup corresponding to the group of the first connecting hole.

[0011] The second connecting hole includes two holes, the axis of the second connecting hole is perpendicular to the first connecting hole, the second connecting hole is installed at both ends of the first connecting hole, and the second connecting hole connects the first connecting hole.

[0012] Multiple flexible hoses are provided, each corresponding to a fixed shell. The flexible hoses are elastic tubes, and they connect the second connecting hole and the control structure.

[0013] Preferably, the control structure includes: a connecting pipe, which is fixedly connected to the fixed shell, communicates with the fixed shell, and communicates with the flexible hose;

[0014] A first piston rod is slidably installed inside the fixed housing. The upper end of the first piston rod is fixed to the test rod, and a piston is fixedly installed at the lower end of the first piston rod. The piston is configured to cooperate with the fixed housing, and the piston is slidably connected to the inner wall of the fixed housing.

[0015] A spring is located inside the fixed housing and is sleeved on the first piston rod. One end of the spring is fixedly connected to the piston, and the other end of the spring is fixedly connected to the upper side wall of the fixed housing.

[0016] The second piston rod is slidably connected to the connecting pipe and fixedly connected to the piston.

[0017] The third valve is fixedly installed inside the connecting pipe;

[0018] An intake valve and an exhaust valve are installed at the bottom of the fixed housing;

[0019] A through hole is provided on the upper end face of the fixed shell.

[0020] Preferably, the mounting frame has horizontal second sliding grooves on both its front and rear sides, and the fixed shell has a slider that is slidably connected to the second sliding groove.

[0021] Preferably, a temperature sensor is installed on the test rod.

[0022] Preferably, the test rod is equipped with a handle.

[0023] Preferably, a telescopic rod is fixedly installed at each end of the fixed rod, the axis of the telescopic rod extends and retracts in the vertical direction, and two horizontal first sliding grooves are provided on the mounting frame, and the telescopic rod is slidably connected to the first sliding grooves.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] During the testing of the power module, the air inside the suction cup is extracted and expelled to achieve the purpose of adsorbing and fixing the power module and then detaching it from the suction cup. This improves work efficiency and avoids damage to the suction cup caused by using brute force to detach it from the power module, thus extending the service life of the suction cup. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0027] Figure 2 This is a utility model Figure 1 Enlarged view of part A in the middle;

[0028] Figure 3 This is a schematic cross-sectional view of the top of the mounting frame of this utility model;

[0029] Figure 4 This is a schematic diagram of the half-section structure of this utility model;

[0030] Figure 5 This is a half-sectional structural diagram of the fixed shell of this utility model.

[0031] In the diagram: 1. Support leg; 2. First slide groove; 3. Suction cup; 4. Mounting frame; 5. Placement plate; 6. Battery; 7. Electronic load; 8. Fixing base; 9. Guide wheel; 10. Telescopic rod; 11. Fixing rod; 12. Plug; 13. Connecting wire; 14. Second slide groove; 15. Slider; 16. Fixing shell; 17. Hose; 18. First piston rod; 19. Spring; 20. Piston; 21. Inlet valve; 22. Outlet valve; 23. Third valve; 24. Second piston rod; 25. Through hole; 26. Test rod; 27. Handle; 28. Temperature sensor; 29. ​​First connecting hole; 30. Second connecting hole; 31. Fixing tube; 32. Connecting tube. Detailed Implementation

[0032] 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.

[0033] like Figure 1-5 As shown, the technical solution adopted by this utility model is as follows: A power module testing device. It includes a mounting frame 4, a battery 6, and an electronic load 7. Two plugs 12 are mounted on the mounting frame 4. Each of the two plugs 12 is connected to the battery 6 and the electronic load 7 by a connecting wire 13.

[0034] Specifically, four support legs 1 are fixedly installed at the lower end of the mounting frame 4. Two placement plates 5 are horizontally fixedly installed on the support legs 1. The two placement plates 5 are placed vertically. There are gaps between the two placement plates 5 and between the upper placement plate 5 and the bottom of the mounting frame 4. The battery 6 is installed in the gap between the two placement plates 5. The electronic load 7 is installed in the gap between the upper placement plate 5 and the mounting frame 4.

[0035] Two test rods 26 are horizontally slidably mounted on the mounting frame 4. The test rods 26 are electrically connected to the two exhaust valves 22.

[0036] Each test rod 26 has a mounting housing 16 at both ends. The mounting housing 16 is fixed to the mounting frame 4. The test rod 26 and the mounting housing 16 are vertically slidably connected. The test rod 26 slides vertically relative to the mounting housing 16, and the height of the test rod 26 can be adjusted according to different specifications of power modules, thereby adapting to the testing of power modules of different specifications.

[0037] Specifically, the mounting frame 4 has horizontal second sliding grooves 14 on both its front and rear sides. A slider 15, which is slidably connected to the second sliding grooves 14, is fixedly mounted on the fixing shell 16.

[0038] A handle 27 is installed on the test rod 26.

[0039] Pushing the test rod 26 allows it to slide horizontally along the second slide groove 14, thereby adjusting the position of the test rod 26 relative to the power module under test.

[0040] A fixing rod 11 is vertically slidably mounted on the mounting frame 4 near the plug 12. The plug 12 is fixedly mounted on the fixing rod 11. The vertical height of the plug 12 can be adjusted by the fixing rod 11, so that the height of the plug 12 is adapted to the height of the test rod 26, facilitating the connection between the plug 12 and the test rod 26.

[0041] Specifically, a telescopic rod 10 is fixedly installed at each end of the fixed rod 11. The axis of the telescopic rod 10 extends and retracts in the vertical direction. The height of the fixed rod 11 can be adjusted by extending and retracting the telescopic rod 10, thereby adjusting the height of the plug 12 so that the plug 12 is compatible with the test rod 26.

[0042] Furthermore, the mounting frame 4 has two horizontal first sliding grooves 2. The direction of the first sliding grooves 2 is parallel to the direction of the second sliding groove 14. The telescopic rod 10 is slidably connected to the first sliding grooves 2. The telescopic rod 10 slides horizontally along the first sliding grooves 2, so that when the fixed rod 11 and the plug 12 move horizontally, they move in the same direction as the horizontal movement of the test rod 26, thereby causing the plug 12 to follow the horizontal movement of the test rod 26. This ensures that the connection between the plug 12 and the test rod 26 remains unbroken when the test rod 26 moves horizontally.

[0043] Two fixing seats 8 are fixedly installed on the side of the mounting frame 4 near the plug 12. The two fixing seats 8 correspond one-to-one with the two plugs 12. Each fixing seat 8 is rotatably mounted with a guide wheel 9. The connecting line 13 passes around the corresponding guide wheel 9.

[0044] By setting the guide wheel 9, the guide wheel 9 can guide the connecting wire 13 when the plug 12 moves, preventing the connecting wire 13 from bending and being damaged.

[0045] A temperature sensor 28 is mounted on the test rod 26. The temperature sensor 28 is used to detect the temperature of the power module surface.

[0046] Multiple suction cups 3 are evenly distributed on the mounting frame 4. The suction cups 3 are used to fix the power module to be tested.

[0047] Specifically, each suction cup 3 has a fixed tube 31 fixedly installed at its lower end. The fixed tubes 31 are connected to each other through a connecting structure. By setting the connecting structure, it is possible to ensure that the pressure inside each suction cup 3 is equal when multiple suction cups 3 are adsorbing the power module to be tested.

[0048] A control structure is installed between the connecting structure and the test rod 26. The pressure within the connecting structure is controlled by the control structure as the test rod 26 moves up and down. By setting the control structure, the suction cup 3 can be automatically controlled to attract or release the power module to be tested.

[0049] The specific process is as follows: The test rod 26 moves upward, its height exceeding that of the power module under test. Simultaneously, the control structure lowers the pressure within the connecting structure, maintaining a negative pressure state, thus allowing the suction cup 3 to adhere and fix the power module under test. During the testing process, the test rod 26 moves downward, contacting the power module under test and performing the test. Throughout this process, the pressure within the connecting structure remains negative. After the test is completed, the test rod 26 continues to move downward, and the control structure raises the pressure within the connecting structure, releasing the negative pressure state, causing the suction cup 3 to release the power module under test. This facilitates the removal of the power module under test.

[0050] Furthermore, the communication structure includes: a first connecting hole 29, a second connecting hole 30, and a flexible tube 17.

[0051] The first connecting hole 29 is provided in multiple sets. Multiple sets of suction cups 3 are arranged in a direction parallel to the axis of the test rod 26. The number of sets of first connecting holes 29 and suction cups 3 are the same and correspond one-to-one. The axis of the first connecting hole 29 is parallel to the axis of the test rod 26. The first connecting hole 29 connects to the fixing tube 31 on the suction cup 3 corresponding to the set of first connecting holes 29.

[0052] The second connecting hole 30 includes two holes. The axis of the second connecting hole 30 is perpendicular to the first connecting hole 29. The second connecting hole 30 is installed at both ends of the first connecting hole 29. The second connecting hole 30 connects the first connecting hole 29.

[0053] Multiple flexible hoses 17 are provided, each corresponding one-to-one with the fixed housing 16. Each flexible hose 17 is an elastic tube. Each flexible hose 17 connects the second connecting hole 30 and the control structure.

[0054] All suction cups 3 are connected by a horizontal and vertical arrangement through the first connecting hole 29 and the second connecting hole 30. This ensures that each suction cup 3 can be used to attach and fix the power module to be tested.

[0055] Furthermore, four control structures are configured, with each end of the test rod 26 connected to one control structure. Specifically, each control mechanism corresponds one-to-one with the fixed housing 16.

[0056] The control structure includes: a connecting pipe 32, a first piston rod 18, a spring 19, an intake valve 21, an exhaust valve 22, a third valve 23, a second piston rod 24, and a through hole 25.

[0057] Specifically, the connecting pipe 32 is fixedly connected to the fixed housing 16. The connecting pipe 32 communicates with the fixed housing 16. The connecting pipe 32 communicates with the flexible hose 17.

[0058] The first piston rod 18 is slidably mounted inside the fixed housing 16. The upper end of the first piston rod 18 is fixed to the test rod 26. A piston 20 is fixedly mounted on the lower end of the first piston rod 18. The piston 20 is configured to cooperate with the fixed housing 16. The piston 20 is slidably connected to the inner wall of the fixed housing 16.

[0059] The air intake valve 21 and air outlet valve 22 are installed at the bottom of the fixed housing 16.

[0060] The through hole 25 is formed on the upper end face of the fixed shell 16.

[0061] When the first piston rod 18 moves the piston 20 upward, the intake valve 21 opens and the exhaust valve 22 closes. When the first piston rod 18 moves the piston 20 downward, the exhaust valve 22 opens and the intake valve 21 closes. When the piston 20 moves up and down, the through hole 25 is used for the exhaust gas from the chamber above the piston 20.

[0062] The spring 19 is located inside the fixed housing 16. The spring 19 is sleeved on the first piston rod 18. One end of the spring 19 is fixedly connected to the piston 20. The other end of the spring 19 is fixedly connected to the upper side wall of the fixed housing 16.

[0063] When the first piston rod 18 moves upward, the spring 19 is compressed and deformed. After the first piston rod 18 is released, under the pressure of the spring 19, the first piston rod 18 drives the test rod 26 and the piston 20 to move downward. In this way, when testing the power module, the spring 19 provides a downward force on the test rod 26, so that the test rod 26 can make close contact with the power module to be tested.

[0064] The second piston rod 24 is slidably connected to the connecting pipe 32. A rubber ring is wrapped around the outer end of the second piston rod 24, and the rubber ring is in contact with the inner wall of the connecting pipe 32. The second piston rod 24 is fixedly connected to the piston 20.

[0065] The third valve 23 is fixedly installed inside the connecting pipe 32. The third valve 23 is located below the second piston rod 24.

[0066] When the second piston rod 24 moves upward, the third valve 23 opens, drawing in air from the first connecting hole 29 and the second connecting hole 30, thus reducing the pressure at the suction cup 3. When the second piston rod 24 disengages from the connecting tube 32, the third valve 23 closes, maintaining a negative pressure state in the first connecting hole 29 and the second connecting hole 30. When the second piston rod 24 moves downward and re-enters the connecting tube 32, the third valve 23 opens, introducing air into the first connecting hole 29 and the second connecting hole 30, bringing the negative pressure states in these two holes to a standstill. The suction cup 3 then releases its grip on the power module and releases the power module.

[0067] It should be noted that the sum of the heights of the second piston rod 24, piston 20, and first piston rod 18 is such that, during power module testing, the test rod 26 contacts the power module, but the second piston rod 24 does not enter the connecting pipe 32. The first piston rod 18 can be configured in various specifications to accommodate the testing of power modules of different specifications. A threaded connection can be selected between the first piston rod 18 and the piston 20 for easy replacement of different specifications of the first piston rod 18.

[0068] The specific usage process of this application is as follows:

[0069] First, place the power module on several suction cups 3.

[0070] Then, pull the handle 27 on the test rod 26, causing the test rod 26 to move upward. The upward movement of the test rod 26 drives the first piston rod 18, piston 20, and second piston rod 24 to move upward together. During this process, the third valve 23 and the air inlet valve 21 open. This allows air between the suction cup 3 and the power module to be drawn into the connecting tube 32 through the fixing tube 31, the first connecting hole 29, and the second connecting hole 30. A negative pressure is formed in the first connecting hole 29, the second connecting hole 30, and the fixing tube 31, and the power module is attracted and fixed by the suction cup 3.

[0071] As the first piston rod 18, piston 20, and second piston rod 24 continue to move upward, when the second piston rod 24 disengages from the connecting pipe 32, the third valve 23 closes because there is no gas flow in the connecting pipe 32, but the air intake valve 21 remains open.

[0072] As the first piston rod 18 moves upward, the spring 19 is compressed and deformed.

[0073] When the height of the test rod 26 is higher than the height of the power module, the handle 27 can be pushed horizontally. The handle 27 causes the fixed shell 16, the first piston rod 18, the piston 20, and the second piston rod 24 to move as a whole along the direction of the second slide groove 14. Pulling can be stopped when the test rod 26 moves above the power module.

[0074] Then, the handle 27 is released, and under the pressure of the spring 19, the test rod 26, temperature sensor 28, first piston rod 18, piston 20, and second piston rod 24 move downward together until the temperature sensor 28 comes into contact with the power module, thereby achieving the purpose of detecting the temperature on the surface of the power module.

[0075] During the power module testing, the second piston rod 24 did not extend into the connecting pipe 32. Simultaneously, during this process, the intake valve 21 closed and the exhaust valve 22 opened.

[0076] Then, the heights of the fixing rod 11 and the plug 12 are adjusted using the telescopic rod 10, and the distance between the plug 12 and the interface is adjusted by pulling the handle 27 on the fixing rod 11, so that the plug 12 is finally inserted into the corresponding socket. The power module is powered by the battery 6, and the performance of the power module is tested and evaluated by the electronic load 7.

[0077] During this process, the guide wheel 9 will guide the connecting line 13 to prevent it from bending and being damaged.

[0078] After the test is completed, pull the handle 27 on the fixing rod 11 to move the fixing rod 11 and plug 12 upwards and horizontally away from the power module. Then, control the telescopic rod 10 to return the fixing rod 11 and plug 12 to their initial state.

[0079] Pulling the handle 27 on the test rod 26 returns it to both ends of the mounting frame 4, and then releasing the handle 27 causes the test rod 26, the first piston rod 18, the piston 20, and the second piston rod 24 to move downwards under the action of the spring 19. During this process, the air outlet valve 22 opens, and then until the second piston rod 24 extends into the connecting tube 32, the second piston rod 24 moves downwards, causing gas to flow in the connecting tube 32, and the third valve 23 opens again. This allows air in the connecting tube 32 to be injected into the suction cup 3 through the hose 17, the second connecting hole 30, the first connecting hole 29, and the fixing tube 31. This releases the negative pressure on the suction cup 3, allowing the power module to detach from the suction cup 3, making it easier for the operator to remove the power module from the suction cup 3.

[0080] 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 power module testing device, comprising a mounting frame (4), a battery (6), and an electronic load (7), wherein two plugs (12) are mounted on the mounting frame (4), and connecting wires (13) are connected between the two plugs (12) and the battery (6) and the electronic load (7), characterized in that, A fixing rod (11) is vertically slidably mounted on the mounting frame (4) near the plug (12). The plug (12) is fixedly mounted on the fixing rod (11). Two test rods (26) are horizontally slidably mounted on the mounting frame (4). Each test rod (26) has a fixing shell (16) installed at both ends. The fixing shell (16) is fixed on the mounting frame (4). The test rod (26) and the fixing shell (16) are vertically slidably connected. Multiple suction cups (3) are evenly distributed on the mounting frame (4). Each suction cup (3) has a fixing tube (31) fixedly mounted at its lower end. The fixing tubes (31) are connected to each other through a connecting structure. A control structure is installed between the connecting structure and the test rod (26). The pressure inside the connecting structure is controlled by the control structure when the test rod (26) moves up and down.

2. The power module detection device according to claim 1, characterized in that: The mounting frame (4) is fixedly mounted with four support legs (1) at its lower end. Two placement plates (5) are fixedly mounted horizontally on the support legs (1). The two placement plates (5) are arranged vertically. There are gaps between the two placement plates (5) and between the upper placement plate (5) and the bottom of the mounting frame (4). The battery (6) is installed in the gap between the two placement plates (5). The electronic load (7) is installed in the gap between the upper placement plate (5) and the mounting frame (4).

3. The power module detection device according to claim 1, characterized in that: Two fixing seats (8) are fixedly installed on the side of the mounting frame (4) near the plug (12). The two fixing seats (8) correspond one-to-one with the two plugs (12). Each fixing seat (8) has a guide wheel (9) rotatably installed on it. The connecting line (13) passes around the corresponding guide wheel (9).

4. The power module detection device according to claim 1, characterized in that: The connecting structure includes: a first connecting hole (29), multiple first connecting holes (29) are provided, multiple sets of suction cups (3) are provided in a direction parallel to the axis of the test rod (26), the number of sets of the first connecting holes (29) and the suction cups (3) are the same and correspond one-to-one, the axis of the first connecting hole (29) is parallel to the axis of the test rod (26), and the first connecting hole (29) connects to the fixing tube (31) on the suction cup (3) corresponding to the first connecting hole (29); The second connecting hole (30) includes two holes. The axis of the second connecting hole (30) is perpendicular to the first connecting hole (29). The second connecting hole (30) is installed at both ends of the first connecting hole (29) and connects the first connecting hole (29). A flexible tube (17) is provided, and multiple flexible tubes (17) are provided and correspond one-to-one with the fixed shell (16). The flexible tube (17) is an elastic tube and connects the second connecting hole (30) and the control structure.

5. The power module detection device according to claim 4, characterized in that: The control structure includes: a connecting pipe (32), which is fixedly connected to the fixed shell (16), the connecting pipe (32) is connected to the fixed shell (16), and the connecting pipe (32) is connected to the flexible hose (17); A first piston rod (18) is slidably installed inside the fixed shell (16). The upper end of the first piston rod (18) is fixed to the test rod (26). A piston (20) is fixedly installed at the lower end of the first piston rod (18). The piston (20) is configured to cooperate with the fixed shell (16). The piston (20) is slidably connected to the inner wall of the fixed shell (16). Spring (19), the spring (19) is located inside the fixed shell (16), the spring (19) is sleeved on the first piston rod (18), one end of the spring (19) is fixedly connected to the piston (20), and the other end of the spring (19) is fixedly connected to the upper side wall of the fixed shell (16). The second piston rod (24) is slidably connected to the connecting pipe (32) and fixedly connected to the piston (20); The third valve (23) is fixedly installed inside the connecting pipe (32); An intake valve (21) and an exhaust valve (22) are installed at the bottom of the fixed housing (16); A through hole (25) is provided on the upper end face of the fixed shell (16).

6. The power module detection device according to claim 1, characterized in that: The mounting frame (4) has horizontal second sliding grooves (14) on both the front and rear sides, and the fixed shell (16) has a slider (15) that is slidably connected to the second sliding grooves (14).

7. The power module detection device according to claim 1, characterized in that: A temperature sensor (28) is installed on the test rod (26).

8. The power module detection device according to claim 1, characterized in that: The test rod (26) is equipped with a handle (27).

9. A power module testing device according to claim 1, characterized in that: A telescopic rod (10) is fixedly installed at each end of the fixed rod (11). The axis of the telescopic rod (10) extends and retracts in the vertical direction. Two horizontal first sliding grooves (2) are opened on the mounting frame (4). The telescopic rod (10) is slidably connected to the first sliding groove (2).

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