IGBT test water cooling mechanism

Abstract

The utility model discloses an IGBT test water cooling mechanism which comprises a rotary feeding table, a jig is arranged on the rotary feeding table, the jig comprises a hollowed-out opening, the jig is used for loading an IGBT device to be tested, the IGBT device covers the hollowed-out opening, a clearance opening is formed in the rotary feeding table, and the clearance opening is communicated with the hollow-out opening. A water supply platform and a water supply driving mechanism used for driving the water supply platform to ascend and descend are arranged below the rotary feeding table, the water supply platform is aligned with the clearance opening, and when the water supply driving mechanism drives the water supply platform to ascend, the clearance opening is communicated with the clearance opening. A water cooling cavity is defined by the bottom face of the IGBT device, the hollowed-out opening, the clearance opening and the top face of the water supply platform, and a water supply opening used for spraying water to the water cooling cavity is formed in the top face of the water supply platform. According to the utility model, the cooling water can be fully contacted with the IGBT device, and the cooling water can be rapidly discharged and completely discharged after the test is completed.

Description

Technical Field

[0001] This utility model relates to IGBT testing equipment, and more particularly to an IGBT testing water cooling mechanism. Background Technology

[0002] As a power device, IGBTs generate a significant amount of heat during operation. In existing IGBT functional testing procedures, while powering on the IGBT using a test module, cooling measures are also necessary to ensure the testing environment matches the actual application environment. Specific cooling methods include water cooling. For example, a cooling chamber can be installed within the IGBT fixture, connected to a water supply system via a circulating water path. Cooling is achieved by the cooling water flowing through the chamber contacting the IGBT. However, because the cooling chamber is located below the IGBT, residual air within it can prevent sufficient contact between the IGBT and the cooling water, resulting in low cooling efficiency. Furthermore, after testing, the circulating water supply stops, requiring a long wait for all the water in the cooling chamber to drain. This not only takes a considerable amount of time but also fails to guarantee complete drainage, leaving residual water at the bottom of the IGBT, directly impacting subsequent processes. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an IGBT test water cooling mechanism that enables the cooling water to fully contact the IGBT device and can quickly drain and empty the cooling water after the test is completed, in order to address the shortcomings of the existing technology.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution.

[0005] An IGBT testing water-cooling mechanism includes a rotating loading platform with a fixture. The fixture has a cutout for loading an IGBT device under test, with the IGBT device covering the cutout. An air-avoiding opening is provided on the rotating loading platform, aligned with and communicating with the cutout. Below the rotating loading platform is a water supply platform and a water supply drive mechanism for driving the water supply platform to move up and down. The water supply platform is aligned with the air-avoiding opening. When the water supply drive mechanism drives the water supply platform to rise, a water-cooling cavity is formed by the bottom surface of the IGBT device, the cutout, the air-avoiding opening, and the top surface of the water supply platform. A water inlet is provided on the top surface of the water supply platform for spraying water into the water-cooling cavity.

[0006] Preferably, the edge of the water supply platform is formed with a conical surface, and when the water supply drive mechanism drives the water supply platform to rise, the conical surface is aligned with the lower opening of the air vent.

[0007] Preferably, both the perforated opening and the clearance opening are rectangular openings, and the water supply platform is a rectangular platform.

[0008] Preferably, the edge of the IGBT device is sealed to the edge of the cutout.

[0009] Preferably, the water inlet is a long strip-shaped water inlet extending along the length of the water supply platform.

[0010] Preferably, a loading platform support is provided below the rotating loading platform, and a rotary drive mechanism for driving the rotating loading platform to rotate is provided on the loading platform support. The water supply drive mechanism is installed on the side of the loading platform support.

[0011] Preferably, the water supply drive mechanism includes a water supply bracket and a water supply drive cylinder. The water supply bracket is fixed to the side of the loading platform support, the water supply drive cylinder is fixed to the water supply bracket, the moving end of the top of the water supply drive cylinder is provided with a water guide block, and the water supply platform is fixed to the upper end of the water guide block.

[0012] Preferably, the water guide block has a water guide channel connected to the water supply port, and the side of the water guide block has a water guide interface connected to the water guide channel.

[0013] Preferably, the system includes a cooling tank, with the rotating loading platform located on top of the cooling tank, and the water supply platform and the water supply drive mechanism both located inside the cooling tank.

[0014] In the IGBT testing water-cooling mechanism disclosed in this utility model, the rotating loading platform transports the fixture containing the IGBT device under test to the top of the water supply platform through rotational motion, aligning the water supply platform with the clearance opening. Then, the water supply drive mechanism drives the water supply platform upwards, bringing it into contact with the edge of the clearance opening. At this point, the bottom surface of the IGBT device, the clearance opening, the clearance opening, and the top surface of the water supply platform together form a water-cooling cavity. Water is sprayed into the water-cooling cavity from the water supply port on the top surface of the water supply platform. Because the water sprayed upwards directly hits the bottom surface of the IGBT device, the cooling water makes full contact with the bottom surface of the IGBT device, greatly improving the cooling efficiency. After the test is completed, the water supply drive mechanism drives the water supply platform downwards, separating the water supply platform from the clearance opening. At this point, the water in the water-cooling cavity can be quickly drained, effectively improving work efficiency. Attached Figure Description

[0015] Figure 1 Structure of the water cooling mechanism Figure 1 ;

[0016] Figure 2 Structure of the water cooling mechanism Figure 2 ;

[0017] Figure 3 This is a structural diagram of the water supply platform and the water supply drive mechanism. Detailed Implementation

[0018] The present invention will now be described in more detail with reference to the accompanying drawings and embodiments.

[0019] This utility model discloses an IGBT testing water-cooling mechanism, combined with... Figures 1 to 3 As shown, it includes a rotating loading platform 1, on which a fixture 4 is provided. The fixture 4 includes a cutout 400. The fixture 4 is used to load an IGBT device 100 to be tested, and the IGBT device 100 covers the cutout 400. An air-avoidance opening 102 is provided on the rotating loading platform 1. The air-avoidance opening 102 is aligned with and communicates with the cutout 400. A water supply platform 50 and a water supply drive mechanism 51 for driving the water supply platform 50 to move up and down are provided below the rotating loading platform 1. The water supply platform 50 is aligned with the air-avoidance opening 102. When the water supply drive mechanism 51 drives the water supply platform 50 to rise, a water-cooling cavity is formed by the bottom surface of the IGBT device 100, the cutout 400, the air-avoidance opening 102 and the top surface of the water supply platform 50. A water supply port 53 for spraying water into the water-cooling cavity is provided on the top surface of the water supply platform 50.

[0020] In the above structure, the rotating loading platform 1, through rotational motion, transports the fixture 4, which carries the IGBT device 100 to be tested, above the water supply platform 50, so that the water supply platform 50 is aligned with the clearance opening 102. Then, the water supply drive mechanism 51 drives the water supply platform 50 to rise, causing the water supply platform 50 to contact the edge of the clearance opening 102. At this time, the bottom surface of the IGBT device 100, the clearance opening 400, the clearance opening 102, and the top surface of the water supply platform 50 together form a water-cooling cavity, which is then cooled by the water supply... Water is sprayed into the water-cooling cavity from the water inlet 53 on the top surface of the water platform 50. Because the water sprayed upward from the water inlet 53 is directly sprayed onto the bottom surface of the IGBT device 100, the cooling water is in full contact with the bottom surface of the IGBT device 100, which greatly improves the cooling efficiency of the IGBT device 100. After the test is completed, the water supply drive mechanism 51 drives the water supply platform 50 to descend, and the water supply platform 50 separates from the air vent 102. At this time, the water in the water-cooling cavity can be quickly discharged and drained, which can effectively improve the working efficiency.

[0021] To ensure good contact between the water supply platform 50 and the edge of the air vent 102, in this embodiment, the edge of the water supply platform 50 is formed with a conical surface 52. When the water supply drive mechanism 51 drives the water supply platform 50 to rise, the conical surface 52 is aligned with the lower opening of the air vent 102. In the above structure, by providing the conical surface 52 on the edge of the water supply platform 50, good contact between the two is ensured, and situations such as jamming between the water supply platform 50 and the edge of the air vent 102 are avoided.

[0022] As a preferred embodiment, both the perforation 400 and the clearance opening 102 are rectangular openings, and the water supply platform 50 is a rectangular platform.

[0023] To prevent water leakage at the top edge of the fixture, in this embodiment, the edge of the IGBT device 100 is sealed to the edge of the cutout 400.

[0024] In practical applications, since the IGBT device 100 is rectangular in shape, in order to ensure that its bottom surface is in full contact with the cooling water, in this embodiment, the water supply port 53 is a long strip-shaped water supply port extending along the length direction of the water supply platform 50.

[0025] This embodiment also includes a cooling tank, with the rotating loading platform 1 located on top of the cooling tank. The water supply platform 50 and the water supply drive mechanism 51 are both located inside the cooling tank. The cooling tank can be used to collect cooling water falling from the water-cooling chamber. After being filtered and circulated, the cooling water in the cooling tank can be resupplyed to the water supply port 53 by the water circulation mechanism.

[0026] In order to drive the rotating loading platform 1 to move, in this embodiment, a loading platform support 103 is provided below the rotating loading platform 1, and a rotating drive mechanism 10 for driving the rotating loading platform 1 to rotate is provided on the loading platform support 103. The water supply drive mechanism 51 is installed on the side of the loading platform support 103.

[0027] Regarding the specific structure of the water supply drive mechanism 51, in this embodiment, the water supply drive mechanism 51 includes a water supply bracket 510 and a water supply drive cylinder 511. The water supply bracket 510 is fixed to the side of the loading platform support 103, and the water supply drive cylinder 511 is fixed to the water supply bracket 510. A water guide block 512 is provided at the top moving end of the water supply drive cylinder 511, and the water supply platform 50 is fixed to the upper end of the water guide block 512. Further, the water guide block 512 has a water guide channel communicating with the water supply port 53, and the side of the water guide block 512 has a water guide interface 513 communicating with the water guide channel. In the above structure, a preset water circulation mechanism can be connected to the water guide interface 513 via a water pipe.

[0028] Based on this, this embodiment also proposes an IGBT testing cooling method, which is implemented based on the water cooling mechanism described above, and includes:

[0029] The IGBT device 100 to be tested is mounted on the fixture 4. The rotating loading platform 1 drives the fixture 4 to move above the water supply platform 50. The water supply drive mechanism 51 drives the water supply platform 50 to rise and cover the clearance opening 102 from the bottom, so that the bottom surface of the IGBT device 100, the clearance opening 400, the clearance opening 102 and the top surface of the water supply platform 50 form a water-cooling cavity. Then, water is sprayed into the water-cooling cavity through the water supply port 53. The water sprayed from the water supply port 53 comes into contact with the heat sinks 104 densely distributed on the bottom of the IGBT device 100 to achieve cooling. After the IGBT device 100 is tested, the water supply drive mechanism 51 drives the water supply platform 50 to descend so that the water in the water-cooling cavity is discharged.

[0030] In practical applications, in order to achieve continuous water spraying from the water supply port 53 and to avoid pressure rise in the water cooling cavity, a gap can be reserved between the edge of the water supply platform 50 and the edge of the vent 102, or a pressure relief groove can be set on the edge of the water supply platform 50, etc., to release the pressure in the water cooling cavity.

[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. All modifications, equivalent substitutions or improvements made within the technical scope of the present utility model should be included within the scope of protection of the present utility model.

Claims

1. A water-cooling mechanism for IGBT testing, characterized in that, The device includes a rotating loading platform with a fixture having a cutout. The fixture is used to load an IGBT device under test, and the IGBT device covers the cutout. The rotating loading platform has an air-avoidance opening that is aligned with and connected to the cutout. Below the rotating loading platform is a water supply platform and a water supply drive mechanism for driving the water supply platform to move up and down. The water supply platform is aligned with the air-avoidance opening. When the water supply drive mechanism drives the water supply platform to rise, a water-cooling cavity is formed by the bottom surface of the IGBT device, the cutout, the air-avoidance opening, and the top surface of the water supply platform. The top surface of the water supply platform has a water inlet for spraying water into the water-cooling cavity.

2. The IGBT testing water-cooling mechanism as described in claim 1, characterized in that, The edge of the water supply platform is formed with a conical surface. When the water supply drive mechanism drives the water supply platform to rise, the conical surface is aligned with the lower opening of the air vent.

3. The IGBT testing water-cooling mechanism as described in claim 1, characterized in that, Both the perforated opening and the air-avoiding opening are rectangular openings, and the water supply platform is a rectangular platform.

4. The IGBT testing water-cooling mechanism as described in claim 1, characterized in that, The edge of the IGBT device is sealed to the edge of the cutout.

5. The IGBT testing water-cooling mechanism as described in claim 3, characterized in that, The water inlet is a long, narrow water inlet that extends along the length of the water supply platform.

6. The IGBT testing water-cooling mechanism as described in claim 1, characterized in that, The rotating loading platform is provided with a loading platform support below it, and the loading platform support is provided with a rotary drive mechanism for driving the rotating loading platform to rotate. The water supply drive mechanism is installed on the side of the loading platform support.

7. The IGBT testing water-cooling mechanism as described in claim 6, characterized in that, The water supply drive mechanism includes a water supply bracket and a water supply drive cylinder. The water supply bracket is fixed to the side of the loading platform support, and the water supply drive cylinder is fixed to the water supply bracket. A water guide block is provided at the moving end of the top of the water supply drive cylinder, and the water supply platform is fixed to the upper end of the water guide block.

8. The IGBT testing water-cooling mechanism as described in claim 7, characterized in that, The water guide block has a water guide channel connected to the water supply port, and the side of the water guide block has a water guide interface connected to the water guide channel.

9. The IGBT testing water-cooling mechanism as described in claim 1, characterized in that, It includes a cooling box, the rotating loading platform is located on top of the cooling box, and the water supply platform and the water supply drive mechanism are both located inside the cooling box.

Images