Automatic testing device for HPD module

Abstract

The utility model discloses an automatic testing device for HPD modules, which comprises a base, a positioning frame is mounted on the base, a plurality of HPD modules are mounted on the positioning frame, a water-cooling testing mechanism is arranged on the base, a control panel and a T3Ster thermal resistance tester are arranged on one side of the base, the water-cooling testing mechanism comprises a double-outlet-rod air cylinder, and the double-outlet-rod air cylinder is connected with the control panel and the T3Ster thermal resistance tester. The end portions of two output shafts of the double-outlet-rod air cylinder are fixedly connected with movable plates, and the movable plates are fixedly connected with guide rods. According to the automatic testing device for the HPD modules, the HPD modules are placed in the positioning frame, plugs of corresponding specifications are selected according to the sizes of the interfaces on the HPD modules, the plugs are installed on the vertical frame, and then the insertion pipes on the plugs are inserted into the interfaces of the HPD modules through the double-outlet-rod air cylinders, so that the multiple HPD modules can be quickly connected and separated; and connection operation by a worker is not needed, so that the test convenience is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of HPD module testing technology, specifically to an automated testing device for HPD modules. Background Technology

[0002] HPD modules are automotive-grade power semiconductor modules widely used in new energy vehicle main drive inverters, on-board chargers (OBCs), and industrial drives. Their design integrates high power density, efficient heat dissipation, and reliability. Testing equipment can perform performance tests on HPD modules. In existing technologies, HPD modules use a pin-fin structure for water cooling. When testing the water cooling performance of HPD modules, operators need to connect the equipment, making the testing less convenient. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides an automated testing device for HPD modules, which solves the problem that when testing the water cooling performance of HPD modules, operators are required to connect the device, making the testing less convenient.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: an automated testing device for HPD modules, including a base, a positioning frame installed on the base, multiple HPD modules installed on the positioning frame, a water-cooled testing mechanism provided on the base, and a control panel and a T3Ster thermal resistance tester provided on one side of the base;

[0005] The water-cooled testing mechanism includes a double-rod cylinder. Movable plates are fixedly connected to the ends of the two output shafts of the double-rod cylinder. Guide rods are fixedly connected to the movable plates. Multiple uprights are fixedly connected to the tops of the two movable plates. Each upright has mounting screw holes and a plug. One end of the plug is fixedly connected to a tube, and a sealing ring is fitted onto the tube. The other end of the plug is fixedly connected to a connecting screw. A solenoid valve is located at the end of the upright away from the mounting screw holes. A connecting pipe is installed on the solenoid valve. A cooling water tank is connected between the ends of the two connecting pipes. A cooler is installed on the cooling water tank. A circulating pump is installed on the cooling water tank. A flow meter is installed on the connecting pipe.

[0006] Preferably, the dual-rod cylinder is fixedly installed inside the base, and the two output shafts of the dual-rod cylinder are through the base, so that the two output shafts of the dual-rod cylinder can move towards or away from each other, thereby driving the movable plates on both sides of the base to move.

[0007] Preferably, the two movable plates are symmetrically arranged on both sides of the base, and the two movable plates are slidably connected to the base through guide rods, so as to guide the movement of the movable plates.

[0008] Preferably, the mounting screw hole matches the connecting screw tube, and the plug is threadedly connected to the stand through the connecting screw tube and the mounting screw hole, making it easy to install and remove the plug.

[0009] Preferably, the outer diameter of the cannula is smaller than the diameter of the plug, and the cannula is matched with the interface on the HPD module so that the cannula can be inserted into the interface on the HPD module.

[0010] Preferably, the cooling water tank is provided with a filling port, and the filling port is provided with a sealing rubber plug, so that cooling water can be easily added to the cooling water tank.

[0011] Preferably, the positioning frame includes a frame body, an embedding groove is provided on the base, the embedding groove matches the frame body, the frame body has multiple positioning grooves, the positioning grooves match the HPD module, and the frame body is provided with mounting bolts to enable positioning of the HPD module.

[0012] This invention provides an automated testing device for HPD modules. Compared with the prior art, it has the following advantages:

[0013] 1. This automated testing device for HPD modules allows for the quick connection and disconnection of multiple HPD modules by placing the HPD module inside the positioning frame, selecting the appropriate plug size according to the interface size of the HPD module, installing the plug on the upright frame, and then inserting the tube on the plug into the interface of the HPD module using a double-rod cylinder. This eliminates the need for manual connection operations and effectively improves the convenience of testing.

[0014] 2. This automated testing device for HPD modules fixes the frame by installing it inside the embedded slot and tightening the mounting bolts. The positioning slot is used to position the HPD module and prevent it from shifting during the testing process. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the water-cooled testing mechanism of this utility model;

[0017] Figure 3 This is a schematic diagram of the connection structure between the stand and the plug of this utility model;

[0018] Figure 4This is a schematic diagram of the positioning frame structure of this utility model.

[0019] In the diagram: 1. Base; 2. Water-cooled testing mechanism; 201. Double-rod cylinder; 202. Movable plate; 203. Guide rod; 204. Stand; 205. Mounting screw hole; 206. Plug; 207. Insert pipe; 208. Sealing ring; 209. Connecting screw pipe; 210. Connecting pipe; 211. Cooling water tank; 212. Circulating pump; 213. Flow meter; 214. Solenoid valve; 3. HPD module; 4. Positioning frame; 401. Frame body; 402. Positioning groove; 403. Mounting bolt; 5. T3Ster thermal resistance tester; 6. Control panel. Detailed Implementation

[0020] 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.

[0021] Please see Figures 1-3 This utility model provides a technical solution: an automated testing device for HPD modules, including a base 1, a positioning frame 4 mounted on the base 1, multiple HPD modules 3 mounted on the positioning frame 4, a water-cooled testing mechanism 2 on the base 1, a control panel 6 and a T3Ster thermal resistance tester 5 on one side of the base 1. The T3Ster thermal resistance tester 5 is an advanced thermal characteristic analysis device designed specifically for semiconductor devices, electronic components and heat dissipation components. Combining transient thermal testing technology and structure function analysis, it provides high-precision, non-destructive measurement of thermal resistance and thermal capacity parameters. The thermal resistance measurement range is 0.002~1000℃ / W, with an error ≤±1%; the junction temperature resolution is 0.01℃, the response time is 1μs, and the signal-to-noise ratio far exceeds that of the traditional pulse method. It is used in conjunction with the water-cooled testing mechanism 2 to test the effect of the flow rate and temperature of the cooling medium on the thermal resistance. The control panel 6 includes a programmable PLC and a touch screen. The programmable PLC can be used to control the whole system, and the parameters can be displayed and operated through the touch screen. Multiple HPD modules 3 can be quickly connected and disconnected through the water-cooled testing mechanism 2 without the need for personnel to perform the connection operation, which effectively improves the convenience of testing.

[0022] The water-cooling testing mechanism 2 includes a double-rod cylinder 201, which is fixedly installed inside the base 1. The two output shafts of the double-rod cylinder 201 penetrate the base 1, allowing them to move towards or away from each other. This drives the movable plates 202 on both sides of the base 1 to move, enabling the two movable plates 202 to move towards or away from each other. Movable plates 202 are fixedly connected to the ends of the two output shafts of the double-rod cylinder 201. Guide rods 203 are fixedly connected to the movable plates 202. The two movable plates 202 are symmetrically arranged on both sides of the base 1. Plate 202 is slidably connected to base 1 via guide rod 203, which guides the movement of movable plate 202. Multiple uprights 204 are fixedly connected to the top of both movable plates 202. Each upright 204 has mounting screw holes 205 and a plug 206. One end of the plug 206 is fixedly connected to a tube 207, and a sealing ring 208 is fitted onto the tube 207 to increase sealing. The other end of the plug 206 is fixedly connected to a connecting screw tube 209, and the mounting screw holes 205 match the connecting screw tube 209. The plug 206 is connected to the upright 204 via the connecting screw tube 209 and the mounting screw holes 205. The threaded connection facilitates the installation and removal of the plug 206, and a seal can be fitted onto the connecting threaded tube 209 to enhance the sealing effect. The outer diameter of the insertion tube 207 is smaller than the diameter of the plug 206, and the insertion tube 207 matches the interface on the HPD module 3, allowing the insertion tube 207 to be inserted into the interface on the HPD module 3. A solenoid valve 214 is located at the end of the support 204 away from the mounting screw hole 205. A connecting tube 210 is installed on the solenoid valve 214, and a cooling water tank 211 is connected between the ends of the two connecting tubes 210. The cooling water tank 211 has a filling port, and a sealing plug is installed inside the filling port to... It can easily replenish cooling water into the cooling water tank 211. The cooling water tank 211 is equipped with a cooler, which can use a semiconductor cooling chip to cool the cooling water inside the cooling water tank 211. The cooling performance can be changed by changing the current, thereby changing the temperature of the cooling medium. The cooling water tank 211 is equipped with a circulation pump 212, and a flow meter 213 is installed on the connecting pipe 210. The flow meter 213 can monitor the flow rate of the cooling water. In addition, the cooling water tank 211 is equipped with a DS18B20 temperature sensor, which can effectively monitor the temperature of the cooling water.

[0023] Please see Figure 1 and Figure 4The positioning frame 4 includes a frame body 401, an embedding groove on the base 1 that matches the frame body 401, a plurality of positioning grooves 402 on the frame body 401 that match the HPD module 3, and mounting bolts 403 on the frame body 401. The frame body 401 can be fixed by installing the frame body 401 inside the embedding groove and tightening the mounting bolts 403. The positioning grooves 402 are used to position the HPD module 3 and prevent the HPD module 3 from shifting during the test.

[0024] During operation, the HPD module 3 is placed inside the positioning frame 4. A plug 206 of the appropriate specification is selected based on the size of the interface on the HPD module 3. The connecting thread 209 at the end of the plug 206 is screwed into the mounting screw hole 205. The plug 206 is then installed on the upright frame 204. The output shaft of the double-rod cylinder 201 drives two movable plates 202 to move closer together to the base 1. The movement of the movable plates 202 moves the upright frame 204, which in turn moves the plug 206, inserting the insertion tube 207 on the plug 206 into the mounting bracket 204. The interface of HPD module 3 allows for quick connection and disconnection of multiple HPD modules 3 without the need for manual connection operations, effectively improving the convenience of testing. Then, solenoid valve 214 opens, and circulation pump 212 operates to drive the cooling medium to circulate. T3Ster thermal resistance tester 5 tests the thermal resistance of HPD module 3. Control panel 6 changes the flow rate of the medium and uses flow meter 213 for real-time monitoring. The cooler changes the temperature of the medium and uses temperature sensor for real-time temperature monitoring, testing the effect of medium temperature and flow rate on thermal resistance.

[0025] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

Claims

1. An automated testing device for HPD modules, comprising a base (1), characterized in that: A positioning frame (4) is installed on the base (1), and multiple HPD modules (3) are installed on the positioning frame (4). A water-cooled testing mechanism (2) is provided on the base (1). A control panel (6) and a T3Ster thermal resistance tester (5) are provided on one side of the base (1). The water-cooling testing mechanism (2) includes a double-rod cylinder (201). Movable plates (202) are fixedly connected to the ends of the two output shafts of the double-rod cylinder (201). Guide rods (203) are fixedly connected to the movable plates (202). Multiple uprights (204) are fixedly connected to the tops of the two movable plates (202). Mounting screw holes (205) are provided on the uprights (204). A plug (206) is provided on the uprights (204). A insertion tube (207) is fixedly connected to one end of the plug (206). The insertion tube (207) has... A sealing ring (208) is fitted on the plug (206), and a connecting screw tube (209) is fixedly connected to the other end of the plug (206). A solenoid valve (214) is provided on the end of the stand (204) away from the mounting screw hole (205). A connecting pipe (210) is installed on the solenoid valve (214). A cooling water tank (211) is connected between the ends of the two connecting pipes (210). A cooler is installed on the cooling water tank (211). A circulating pump (212) is installed on the cooling water tank (211). A flow meter (213) is installed on the connecting pipe (210).

2. The automated testing device for HPD modules according to claim 1, characterized in that: The double-rod cylinder (201) is fixedly installed inside the base (1), and the two output shafts of the double-rod cylinder (201) are connected through the base (1).

3. The automated testing device for HPD modules according to claim 1, characterized in that: The two movable plates (202) are symmetrically arranged on both sides of the base (1), and the two movable plates (202) are slidably connected to the base (1) through guide rods (203).

4. The automated testing device for HPD modules according to claim 1, characterized in that: The mounting screw hole (205) matches the connecting screw tube (209), and the plug (206) is threadedly connected to the stand (204) through the connecting screw tube (209) and the mounting screw hole (205).

5. The automated testing device for HPD modules according to claim 1, characterized in that: The outer diameter of the cannula (207) is smaller than the diameter of the plug (206), and the cannula (207) is matched with the interface on the HPD module (3).

6. The automated testing device for HPD modules according to claim 1, characterized in that: The cooling water tank (211) is provided with an inlet, and the inlet is provided with a sealing plug.

7. The automated testing device for HPD modules according to claim 1, characterized in that: The positioning frame (4) includes a frame (401), and the base (1) has an embedding groove that matches the frame (401).

8. The automated testing device for HPD modules according to claim 7, characterized in that: The frame (401) is provided with multiple positioning slots (402), which are matched with the HPD module (3), and the frame (401) is provided with mounting bolts (403).

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