Detection device for silicon carbide power device

Abstract

The utility model provides a detection device for a silicon carbide power device, which relates to the technical field of silicon carbide power device detection equipment, and comprises a fixing mechanism arranged on the upper surface of a detection table, the fixing mechanism comprises a connecting rod, and the top end of the connecting rod is fixedly connected with a connecting block. Symmetrical transmission rods are hinged to the inner wall of the connecting block, L-shaped supporting rods are hinged to the outer surfaces of the two transmission rods, bearing plates are fixedly connected to the bottom ends of the two L-shaped supporting rods, sliding sleeves are fixedly connected to one ends of the two bearing plates, and guide rods are slidably connected to the inner walls of the sliding sleeves. According to the detection device for the silicon carbide power device, through cooperative arrangement of the detection table and the fixing mechanism, people do not need to hold the power device when detecting the power device, the hand shielding area in the power device scanning process is reduced, and scanning of the power device is more comprehensive.

Description

A detection device for silicon carbide power devices Technical Field

[0001] This utility model relates to a testing device for silicon carbide power devices, specifically a testing device for silicon carbide power devices, belonging to the technical field of silicon carbide power device testing equipment. Background Technology

[0002] Silicon carbide power devices are high-power electronic components used in power equipment for power conversion and control circuits. Due to the excellent properties of silicon carbide materials, they play an important role in many fields. For example, in the field of electric vehicles and new energy vehicles, the use of silicon carbide power devices in motor controllers and on-board chargers can improve energy efficiency, shorten charging time, and increase driving range. At the same time, due to their small size and light weight, they help to reduce the weight of vehicles.

[0003] However, after silicon carbide power devices are manufactured, their surfaces need to be inspected to ensure that they are not damaged. However, in the current technology, when scanning and analyzing the surface of silicon carbide, people usually use handheld power devices for scanning. During the scanning process, the operator's hand will block the power device, resulting in an incomplete scan and inaccurate test results.

[0004] Therefore, a detection device for silicon carbide power devices is proposed here. Summary of the Invention

[0005] This invention proposes a testing device for silicon carbide power devices to solve the problem of inaccurate test results that often occur during the testing of power devices in the prior art.

[0006] This utility model is achieved through the following technical solution: a testing device for silicon carbide power devices, including a testing platform, a fixing mechanism provided on the upper surface of the testing platform, the fixing mechanism including a connecting rod, a connecting block fixedly connected to the top of the connecting rod, the connecting block being T-shaped, a symmetrical transmission rod hinged to the inner wall of the connecting block, the angle between the two transmission rods can be increased or decreased by the up and down movement of the connecting block, an L-shaped support rod hinged to the outer surface of each of the two transmission rods, the L-shaped support rod can be moved as the angle between the transmission rods changes, a bearing plate fixedly connected to the bottom end of each of the two L-shaped support rods, a sliding sleeve fixedly connected to one end of each of the two bearing plates, a guide rod slidably connected to the inner wall of the sliding sleeve, and a fixing plate fixedly connected to both ends of the guide rod, the fixing plate providing support for the guide rod.

[0007] Specifically, the fixing plate is fixedly connected to the upper surface of the testing platform, and the outer surfaces of the two L-shaped support rods are fixedly connected with sliding sleeves, so that the testing platform can support the fixing plate.

[0008] Preferably, a symmetrical miniature electric telescopic cylinder is installed on the bottom surface of the testing platform, a horizontal plate is provided on the bottom surface of the testing platform, the miniature electric telescopic cylinder is installed on the bottom surface of the testing platform by bolts, and the miniature electric telescopic cylinder is electrically connected to an external power source through a wire.

[0009] Furthermore, the output ends of both miniature electric telescopic cylinders are fixedly connected to the horizontal plate, and the bottom end of the connecting rod is fixedly connected to the upper surface of the horizontal plate. By activating the miniature electric telescopic cylinders, the horizontal plate can be moved upward or downward.

[0010] Preferably, the inner wall of the testing platform is slidably connected with symmetrical positioning rods, the bottom ends of the two positioning rods are fixedly connected to the upper surface of the horizontal plate, and the top ends of the two positioning rods are fixedly connected to limit pads.

[0011] Specifically, a U-shaped frame is fixedly connected to the upper surface of the testing station, an analyzer is mounted on the upper surface of the U-shaped frame, a scanning lens is mounted on the inner surface of the U-shaped frame, and four support legs are fixedly connected to the bottom surface of the testing station. After the silicon carbide power device is placed, the analyzer can scan the silicon carbide power device under the action of the scanning lens by starting the analyzer.

[0012] This invention provides a detection device for silicon carbide power devices, which has the following advantages:

[0013] 1. The testing device for silicon carbide power devices, through the coordinated arrangement between the testing platform and the fixing mechanism, eliminates the need for users to hold the power devices during testing, reduces the area obstructed by the hands during the scanning process, and makes the scanning of power devices more comprehensive.

[0014] 2. The testing device for silicon carbide power devices, through the coordinated arrangement of connecting rods, connecting blocks, transmission rods, L-shaped support rods, clamping pads, and miniature electric telescopic cylinders, can scan the power devices by clamping them with two clamping pads, resulting in a more comprehensive scan of the power devices and improving the accuracy of the test results. Attached Figure Description

[0015] Figure 1 is a front view of the three-dimensional structure of this utility model;

[0016] Figure 2 is a partial structural schematic diagram of this utility model;

[0017] Figure 3 is a three-dimensional structural diagram of the fixing mechanism of this utility model;

[0018] Figure 4 is a schematic diagram of the installation structure of the miniature electric telescopic cylinder and the cross plate of this utility model.

[0019] Explanation of reference numerals in the attached figures

[0020] 1. Testing station;

[0021] 2. Fixing mechanism; 201. Connecting rod; 202. Connecting block; 203. Transmission rod; 204. L-shaped support rod; 205. Bearing plate; 206. Sliding sleeve; 207. Guide rod; 208. Fixing plate; 209. Clamping pad;

[0022] 3. Miniature electric telescopic cylinder; 4. Horizontal plate; 5. Positioning rod;

[0023] 6. Limiting pad; 7. U-shaped frame; 8. Analyzer; 9. Scanning lens; 10. Support leg. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this application.

[0025] Please refer to Figures 1 to 4. The present invention proposes the following implementation scheme: A testing device for silicon carbide power devices includes a testing platform 1. A fixing mechanism 2 is provided on the upper surface of the testing platform 1. The fixing mechanism 2 includes a connecting rod 201. A connecting block 202 is fixedly connected to the top end of the connecting rod 201. A symmetrical transmission rod 203 is hinged to the inner wall of the connecting block 202. An L-shaped support rod 204 is hinged to the outer surface of each of the two transmission rods 203. A bearing plate 205 is fixedly connected to the bottom end of each of the two L-shaped support rods 204. A sliding sleeve 206 is fixedly connected to one end of each of the two bearing plates 205. A guide rod 207 is slidably connected to the inner wall of the sliding sleeve 206. A fixing plate 208 is fixedly connected to both ends of the guide rod 207. The fixing plate 208 can support the guide rod 207.

[0026] Please refer to Figure 3. The fixing plate 208 is fixedly connected to the upper surface of the testing table 1. The outer surfaces of the two L-shaped support rods 204 are fixedly connected to the sliding sleeves 206. The testing table 1 can support the fixing plate 208.

[0027] Please refer to Figure 3. A symmetrical miniature electric telescopic cylinder 3 is installed on the bottom surface of the testing platform 1. A horizontal plate 4 is provided on the bottom surface of the testing platform 1. The miniature electric telescopic cylinder 3 is installed on the bottom surface of the testing platform 1 by bolts, and the miniature electric telescopic cylinder 3 is electrically connected to an external power source through wires.

[0028] Please refer to Figure 4. The output ends of the two miniature electric telescopic cylinders 3 are fixedly connected to the horizontal plate 4, and the bottom end of the connecting rod 201 is fixedly connected to the upper surface of the horizontal plate 4. By activating the miniature electric telescopic cylinders 3, the horizontal plate 4 can be moved up or down.

[0029] Please refer to Figure 4. The inner wall of the testing table 1 is slidably connected with symmetrical positioning rods 5. The bottom ends of the two positioning rods 5 are fixedly connected to the upper surface of the horizontal plate 4, and the top ends of the two positioning rods 5 are fixedly connected to limit pads 6.

[0030] Please refer to Figure 2. A U-shaped frame 7 is fixedly connected to the upper surface of the test station 1. An analyzer 8 is installed on the upper surface of the U-shaped frame 7. A scanning lens 9 is installed on the inner surface of the U-shaped frame 7. Four support legs 10 are fixedly connected to the bottom surface of the test station 1. After the silicon carbide power device is placed, the analyzer 8 can scan the silicon carbide power device under the action of the scanning lens 9 by starting it.

[0031] In use, the silicon carbide power device to be tested is first placed between two clamping pads 209. Then, the micro electric telescopic cylinder 3 is activated to move the horizontal plate 4 downward, which in turn moves the connecting block 202 downward. At this time, the included angle between the two transmission rods 203 becomes smaller, causing the two L-shaped support rods 204 to slide closer to each other. Under the action of the clamping pads 209, the silicon carbide power device to be tested is fixed, so that people no longer need to hold the power device when testing it. This reduces the area of ​​hand obstruction during the scanning process, making the scanning of the power device more comprehensive and improving the accuracy of the test results.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A testing device for silicon carbide power devices, comprising a testing stage (1), characterized in that: The upper surface of the testing platform (1) is provided with a fixing mechanism (2). The fixing mechanism (2) includes a connecting rod (201). A connecting block (202) is fixedly connected to the top end of the connecting rod (201). A symmetrical transmission rod (203) is hinged to the inner wall of the connecting block (202). An L-shaped support rod (204) is hinged to the outer surface of each of the two transmission rods (203). A bearing plate (205) is fixedly connected to the bottom end of each of the two L-shaped support rods (204). A sliding sleeve (206) is fixedly connected to one end of each of the two bearing plates (205). A guide rod (207) is slidably connected to the inner wall of the sliding sleeve (206). A fixing plate (208) is fixedly connected to both ends of the guide rod (207).

2. The detection device for silicon carbide power devices according to claim 1, characterized in that: The fixing plate (208) is fixedly connected to the upper surface of the testing table (1), and the outer surfaces of the two L-shaped support rods (204) are fixedly connected with sliding sleeves (206).

3. The detection device for silicon carbide power devices according to claim 1, characterized in that: The bottom surface of the testing platform (1) is equipped with a symmetrical miniature electric telescopic cylinder (3), and the bottom surface of the testing platform (1) is provided with a horizontal plate (4).

4. The detection device for silicon carbide power devices according to claim 3, characterized in that: The output ends of both of the miniature electric telescopic cylinders (3) are fixedly connected to the horizontal plate (4), and the bottom end of the connecting rod (201) is fixedly connected to the upper surface of the horizontal plate (4).

5. The detection device for silicon carbide power devices according to claim 3, characterized in that: The inner wall of the testing platform (1) is slidably connected with symmetrical positioning rods (5). The bottom ends of the two positioning rods (5) are fixedly connected to the upper surface of the horizontal plate (4), and the top ends of the two positioning rods (5) are fixedly connected to limit pads (6).

6. The detection device for silicon carbide power devices according to claim 1, characterized in that: The upper surface of the testing platform (1) is fixedly connected to a U-shaped frame (7), an analyzer (8) is installed on the upper surface of the U-shaped frame (7), a scanning lens (9) is installed on the inner surface of the U-shaped frame (7), and four support legs (10) are fixedly connected to the bottom surface of the testing platform (1).

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