Semi-automatic testing device for power module

Abstract

The utility model relates to the technical field of semiconductor packaging testing, and particularly discloses a power module semi-automatic testing device which comprises a rack, a vertical moving mechanism, a lifting platform and a testing platform. The vertical moving mechanism is fixed in the rack; the lifting platform comprises a lifting platform bottom plate, a left-right moving mechanism, a front-back moving mechanism and a power module mounting mechanism; the lifting platform bottom plate is connected with the vertical moving mechanism; the vertical moving mechanism is used for driving the lifting platform bottom plate to move up and down; the left-right moving mechanism is mounted on the lifting platform bottom plate, the front-back moving mechanism is mounted on the left-right moving mechanism, and the power module mounting mechanism is mounted on the front-back moving mechanism; a to-be-tested power module is detachably connected with the power module mounting mechanism; the test bench is fixed in the rack and is located on a moving path of the lifting platform; the test board is provided with a test circuit board and a test probe. According to the technical scheme of the utility model, the compatibility is strong, and the test efficiency of the power module can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of semiconductor packaging and testing, in particular to a semi-automatic testing device for a power module. Background Art

[0002] As the core component of power electronic converters, power modules have been widely used in new energy system inverters, battery management, electric drive systems, inverters and other fields, resulting in an increasing demand for them year by year. Therefore, their production efficiency is particularly important.

[0003] When the power module is completed and its performance is tested, the currently commonly used method is to manually install the test board and the corresponding additional power supply. The employees are inefficient when performing the test, and the labor intensity is high, which is not conducive to the company's large-scale production of power modules.

[0004] Therefore, it is necessary to design a semi-automatic test device for power modules with stable structure, strong compatibility and improved production efficiency. Utility Model Content

[0005] The utility model provides a semi-automatic testing device for a power module, which has strong compatibility and can improve the testing efficiency of the power module.

[0006] In order to solve the above technical problems, this application provides the following technical solutions:

[0007] A semi-automatic testing device for a power module comprises: a frame, a vertical moving mechanism, a lifting platform and a testing platform;

[0008] The vertical moving mechanism is fixed in the frame;

[0009] The lifting platform includes a lifting platform base plate, a left-right moving mechanism, a front-back moving mechanism and a power module installation mechanism; the lifting platform base plate is connected to the vertical moving mechanism; the vertical moving mechanism is used to drive the lifting platform base plate to move up and down;

[0010] The left-right moving mechanism is installed on the bottom plate of the lifting platform, the front-back moving mechanism is installed on the left-right moving mechanism, and the power module mounting mechanism is installed on the front-back moving mechanism; the power module to be tested is detachably connected to the power module mounting mechanism;

[0011] The test bench is fixed in the frame and is located on the moving path of the lifting platform; a test circuit board and a test probe are installed on the test bench.

[0012] Furthermore, the frame includes a bottom plate, a lifting guide rail slider mounting plate, a servo module mounting plate and a locking plate;

[0013] The lifting guide rail slider mounting plate and the servo module mounting plate are vertically fixed on the left and right ends of the base plate respectively;

[0014] The left and right ends of the locking plate are fixedly connected to the top of the lifting guide rail slider mounting plate and the servo module mounting plate respectively.

[0015] Furthermore, a placement box is fixedly installed on the top of the locking plate; a plurality of test adapters are placed in the placement box, and one end of the test adapter is provided with a quick-plug male connector for testing.

[0016] Furthermore, a through hole is opened on the outer side of the lifting guide rail slider mounting plate, and a cooling fan is fixedly mounted on the through hole.

[0017] Furthermore, the vertical movement mechanism includes a lifting guide rail, a lifting guide rail slider, a lifting guide rail slider connecting plate, a servo module, and a servo module connecting plate;

[0018] The lifting guide rail is vertically fixed to the inner side of the lifting guide rail slider mounting plate, and the lifting guide rail slider is slidably connected to the lifting guide rail; the lifting guide rail slider can slide up and down along the lifting guide rail;

[0019] One end of the lifting guide rail slider away from the lifting guide rail slider mounting plate is fixedly connected to the lifting guide rail slider connecting plate;

[0020] The servo module is vertically fixed on the inner side of the servo module mounting plate;

[0021] The servo module connecting plate is installed on the servo module; the servo module is used to drive the servo module connecting plate to move up and down.

[0022] Furthermore, the two ends of the lifting platform bottom plate are fixedly connected to the lifting guide rail slider connecting plate and the servo module connecting plate respectively;

[0023] The forward and backward moving mechanism includes a left and right moving guide rail slider and a gear rack slide;

[0024] The left and right movable guide rail sliders are installed on the bottom plate of the lifting platform, and the gear rack slide is slidably connected to the left and right movable guide rail sliders; the gear rack slide can slide left and right along the left and right movable guide rail sliders;

[0025] The forward and backward moving mechanism includes a forward and backward moving guide rail slider connecting plate, a forward and backward moving guide rail slider, and a trapezoidal screw module;

[0026] The front and rear movable guide rail slider connecting plate is installed on the gear rack slide; the front and rear movable guide rail slider and the trapezoidal screw module are installed on the front and rear movable guide rail slider connecting plate; the front and rear movable guide rail sliders are located on the left and right sides of the trapezoidal screw module;

[0027] The power module installation mechanism includes a heating platform connecting plate, a heating platform, and a power module quick-change plate;

[0028] The heating table connecting plate is slidably connected to the front and rear movable guide rail slider, and the heating table connecting plate can slide back and forth along the front and rear movable guide rail slider;

[0029] The trapezoidal screw module is fixedly connected to the bottom of the heating platform connecting plate, and the top of the heating platform connecting plate is fixedly connected to the bottom of the heating platform;

[0030] The heating table is fixed with pins; the power module quick-change plate is fixed with pins and has pin holes;

[0031] The power module quick-change plate is detachably connected to the pins on the heating platform through the pin holes; the pins on the power module quick-change plate are detachably connected to the mounting holes on the power module to be tested.

[0032] Further, the test bench includes a test circuit board mounting plate fixing plate 1, a test circuit board mounting plate fixing plate 2, a test circuit board mounting plate fixing plate 3, and a test circuit board mounting plate;

[0033] The third fixing plate of the test circuit board mounting plate is fixed to the inner side of the mounting plate of the lifting guide rail slider, and the third fixing plate of the test circuit board mounting plate is located above the lifting guide rail slider;

[0034] The second test circuit board mounting plate fixing plate and the first test circuit board mounting plate fixing plate are located on both sides of the vertically mounted servo module, and their heights correspond to the third test circuit board mounting plate fixing plate;

[0035] The upper end of the test circuit board mounting plate fixing plate 3 is fixedly connected to the left end of the test circuit board mounting plate, and the right end of the test circuit board mounting plate is fixedly connected to the test circuit board mounting plate fixing plate 2 and the test circuit board mounting plate fixing plate 1 respectively;

[0036] The test circuit board and the test probe are installed on the test circuit board mounting plate, and the test circuit board is also connected to a test quick-plug female connector.

[0037] When using this solution, connect the quick-connect male connector on one end of the test adapter to the quick-connect female connector on the test circuit board as required, connect each circuit connection part to the test equipment, install the corresponding power module quick-change plate on the heating table through the pins and pin holes, and then connect the corresponding power module to the pins on the power module quick-change plate through the mounting holes to complete the installation of the power module on the power module quick-change plate.

[0038] Then control the lifting platform to rise until the terminal position of the power module is close to the horizontal position of the bottom of the test probe, mobilize the gear rack slide and the trapezoidal screw module to move left and right and forward and backward, so that the terminal position of the power module is in a straight line with the vertical direction of each test probe, and then control the lifting platform to continue to rise until the upper part of the terminal position of the power module is effectively in contact with the bottom of the test probe, and then conduct the test. After the test is completed and there are no problems, the current position can be input into the PLC controlled by the background, and then the lifting platform is controlled to return to the original position, remove the power module, and put a new power module. The PLC then automatically controls the lifting and lowering of the lifting platform, and the test equipment automatically starts the test. After the test is completed, the lifting platform automatically returns to the original position. Remove the tested power module, put a new power module and repeat the automatic test steps.

[0039] This solution can be adjusted according to different power modules, that is, by replacing the corresponding test circuit board and test circuit board mounting plate, and adjusting the gear rack slide, trapezoidal lead screw module and servo motor automatic rising height position, it can realize the testing of various types of power modules.

[0040] In summary, this solution has a stable structure, can quickly switch between different types of power modules, and complete testing semi-automatically, which can improve the testing efficiency and test stability of power modules, thereby improving the production efficiency of power modules. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a front view of an embodiment of a semi-automatic testing device for power modules;

[0042] Figure 2 An axonometric diagram of an embodiment of a semi-automatic testing device for power modules;

[0043] Figure 3 A top view of an embodiment of a semi-automatic testing device for power modules. DETAILED DESCRIPTION

[0044] The following is further described in detail through specific implementation methods:

[0045] The marks in the drawings of the specification include: base plate 1, lifting guide rail slider mounting plate 2, reinforcing rib 3, lifting guide rail slider 4, lifting guide rail slider connecting plate 5, cooling fan 6, test circuit board mounting plate fixing plate three 7, locking plate 8, placement box 9, test adapter 10, servo module mounting plate 11, servo module 12, test circuit board 13, test circuit board mounting plate 14, infrared sensor 15, power module 16, power module quick change plate 17, heating table 18, heating table connecting plate 19, servo motor 20, forward and backward moving guide rail slider 21, forward and backward moving guide rail slider connecting plate 22, lifting platform base plate 23, left and right moving guide rail slider 25, gear rack slide 25, trapezoidal screw module 26, test probe 27, four-in-one connector 28, test circuit board mounting plate fixing plate two 29, test circuit board mounting plate fixing plate one 30, servo module connecting plate 31.

[0046] Example

[0047] A semi-automatic testing device for a power module according to this embodiment includes a frame, a vertical moving mechanism, a lifting platform, and a testing platform.

[0048] The frame includes a base plate 1, a lifting guide rail slider mounting plate 2, a servo module mounting plate 11 and a locking plate 8;

[0049] The lifting guide rail slider mounting plate 2 and the servo module mounting plate 11 are respectively vertically fixedly mounted on the left and right ends of the base plate 1; the bottom ends of the lifting guide rail slider mounting plate 2 and the servo module mounting plate 11 are fixedly connected to the base plate 1 by screws.

[0050] In this embodiment, the lifting guide rail slider mounting plate 2 and the servo module mounting plate 11 are respectively reinforced with two reinforcing ribs 3 for structural strength;

[0051] A through hole with a diameter of 60 mm is opened on the outside of the lifting guide rail slider mounting plate 2, and a cooling fan 6 is fixed on the through hole by screws;

[0052] The left and right ends of the locking plate 8 are screwed to the top of the lift rail slider mounting plate 2 and the servo module mounting plate 11, respectively. A storage box 9 is also screwed to the right side of the top of the locking plate 8. Inside this box 9 are several sets of test adapters 10, each with a quick-connect male test connector at one end. In this embodiment, there are four sets of test adapters 10.

[0053] The vertical movement mechanism includes a lifting guide rail, a lifting guide rail slider 4, a lifting guide rail slider connecting plate 5, a servo module 12, and a servo module connecting plate 31;

[0054] The lifting guide rail is vertically fixed to the inner side of the lifting guide rail slider mounting plate 2, and the lifting guide rail slider 4 is slidably connected to the lifting guide rail; the lifting guide rail slider 4 can slide up and down along the lifting guide rail.

[0055] One end of the lifting guide rail slider 4 away from the lifting guide rail slider mounting plate 2 is fixedly connected to the lifting guide rail slider connecting plate 5.

[0056] The servo module 12 is vertically fixed on the inner side of the servo module mounting plate 11 by screws;

[0057] The servo module connecting plate 31 is mounted on the servo module 12. The servo module 12 is used to drive the servo module connecting plate 31 up and down. Specifically, the servo module 12 includes a servo motor 20 and an infrared sensor 15. The servo motor 20 is position-controlled via a PLC and control buttons, thereby driving the servo module connecting plate 31 up and down.

[0058] The lifting guide rail slider connecting plate 5 and the servo module connecting plate 31 are also fixedly connected to the lifting platform.

[0059] The test bench includes a test circuit board mounting plate fixing plate 1 30, a test circuit board mounting plate fixing plate 29, a test circuit board mounting plate fixing plate 3 7, and a test circuit board mounting plate 14;

[0060] The test circuit board mounting plate fixing plate three 7 is fixed on the inner side of the lifting guide rail slider mounting plate 2 , and the test circuit board mounting plate fixing plate three 7 is located above the lifting guide rail slider 4 .

[0061] The second test circuit board mounting plate fixing plate 29 and the first test circuit board mounting plate fixing plate 30 are located on both sides of the vertically mounted servo module 12 , and their heights correspond to the third test circuit board mounting plate fixing plate 7 .

[0062] The upper end of the test circuit board mounting plate fixing plate three 7 is fixedly connected to the left end of the test circuit board mounting plate 14, and the right end of the test circuit board mounting plate 14 is fixedly connected to the test circuit board mounting plate fixing plate two 29 and the test circuit board mounting plate fixing plate one 30 respectively.

[0063] The test circuit board 13 and the test probe 27 are installed on the test circuit board mounting plate 14. The test circuit board 13 and the test probe 27 are connected by soldering. Four test quick-plug female connectors are also connected to the test circuit board 13 by soldering. In addition, a four-in-one connector 28 is connected according to test requirements.

[0064] The lifting platform includes a lifting platform base plate 23, a left-right moving mechanism, a front-back moving mechanism and a power module installation mechanism;

[0065] Both ends of the lifting platform bottom plate 23 are fixedly connected to the lifting guide rail slider connecting plate 5 and the servo module connecting plate 31 respectively.

[0066] The forward and backward movement mechanism includes a left and right moving guide rail slider 25 and a gear rack slide 25;

[0067] The left and right movable guide rail slider 25 is installed on the lifting platform bottom plate 23, and the gear rack slide 25 is slidably connected to the left and right movable guide rail slider 25; the gear rack slide 25 can slide left and right along the left and right movable guide rail slider 25;

[0068] The forward and backward movement mechanism includes a forward and backward moving guide rail slider connecting plate 22, a forward and backward moving guide rail slider 21, and a trapezoidal screw module 26;

[0069] The front-to-back movable guide rail slider connecting plate 22 is mounted on the gear rack slide 25; the front-to-back movable guide rail slider 21 and the trapezoidal screw module 26 are mounted on the front-to-back movable guide rail slider connecting plate 22; the front-to-back movable guide rail slider 21 is located on the left and right sides of the trapezoidal screw module 26;

[0070] The power module 16 installation mechanism includes a heating platform connecting plate 19, a heating platform 18, and a power module quick-change plate 17;

[0071] The heating table connecting plate 19 is slidably connected to the front-rear movable guide rail slider 21, and the heating table connecting plate 19 can slide back and forth along the front-rear movable guide rail slider 21;

[0072] The trapezoidal screw module 26 is fixedly connected to the bottom of the heating platform connecting plate 19, and the top of the heating platform connecting plate 19 is fixedly connected to the bottom of the heating platform 18;

[0073] Two pins are fixed on the heating platform 18; in this embodiment, a synthetic stone slab is also fixed on the bottom of the heating platform 18 for heat insulation.

[0074] Two pins are fixed on the power module quick-change plate 17, and two pin holes are opened; the power module quick-change plate 17 is matched with the pins on the heating platform 18 through the pin holes; the pins on the power module quick-change plate 17 are matched with the mounting holes on the power module 16 to be tested.

[0075] The working principle of this embodiment is as follows:

[0076] As shown in the figure, it is the origin position. First, turn on the power supply, connect the quick-plug male connectors at one end of the four sets of test adapters 10 to the quick-plug female connectors on the test circuit board 13 as required, and connect each circuit connection part to the test equipment. At the same time, at this position, install the corresponding power module quick-change plate 17 on the heating table 18 through the pins and pin holes, and then connect the corresponding power module 16 to the pins on the power module quick-change plate 17 through the mounting holes to complete the installation of the power module 16 on the power module quick-change plate 17.

[0077] Then, by pressing the manual rise control button, the lifting platform rises until the terminal position of the power module 16 is close to the horizontal position of the bottom of the test probe 27, the gear rack slide 25 and the trapezoidal screw module 26 are mobilized to move left and right and forward and backward, so that the terminal position of the power module 16 is vertically in a straight line with each test probe 27, and then the manual rise control button is pressed to make the lifting platform continue to rise until the upper part of the terminal position of the power module 16 is effectively in contact with the bottom of the test probe 27, and then the test button on the test equipment is manually pressed to perform the test. After the test is completed and there is no problem, the current position is input into the PLC, and then the manual descending button is pressed until the lifting platform returns to the original position. After that, the power module 16 can be removed and a new power module 16 is placed. Then, the automatic rise button is pressed, and the lifting platform automatically rises to the initially set position, and the test equipment automatically starts testing. After the test is completed, the lifting platform automatically returns to the original position, removes the tested power module 16, and then places a new power module 16 and repeats the automatic test steps.

[0078] The solution of this embodiment can be adjusted according to different power modules 16, that is, by replacing the corresponding test circuit board 13 and the test circuit board mounting plate 14, and adjusting the gear rack slide 25, the trapezoidal screw module 26 and the servo motor 20 to automatically rise to a high position, thereby realizing the testing of various types of power modules 16.

[0079] The above are only embodiments of the present invention, and the present invention is not limited to the fields involved in this implementation case. Common knowledge such as the known specific structures and characteristics in the scheme is not described in detail here. Ordinary technicians in the relevant field are aware of all common technical knowledge in the technical field to which the utility model belongs before the application date or priority date, can obtain all existing technologies in the field, and have the ability to apply conventional experimental means before that date. Ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the inspiration given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, which should also be regarded as the scope of protection of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A semi-automatic test device for power modules, characterized in that: include: Racks, vertical movement mechanisms, lifting tables and test benches; The vertical moving mechanism is fixed in the frame; The lifting platform includes a lifting platform base plate, a left-right moving mechanism, a front-back moving mechanism and a power module installation mechanism; the lifting platform base plate is connected to the vertical moving mechanism; the vertical moving mechanism is used to drive the lifting platform base plate to move up and down; The left-right moving mechanism is installed on the bottom plate of the lifting platform, the front-back moving mechanism is installed on the left-right moving mechanism, and the power module mounting mechanism is installed on the front-back moving mechanism; the power module to be tested is detachably connected to the power module mounting mechanism; The test bench is fixed in the frame and is located on the moving path of the lifting platform; a test circuit board and a test probe are installed on the test bench.

2. The semi-automatic test device for power modules according to claim 1, characterized in that: The frame includes a bottom plate, a lifting guide rail slider mounting plate, a servo module mounting plate and a locking plate; The lifting guide rail slider mounting plate and the servo module mounting plate are vertically fixed on the left and right ends of the base plate respectively; The left and right ends of the locking plate are fixedly connected to the top of the lifting guide rail slider mounting plate and the servo module mounting plate respectively.

3. The semi-automatic test device for power modules according to claim 2, wherein: A placement box is also fixedly installed on the top of the locking plate; a plurality of test adapters are placed in the placement box, and one end of the test adapter is provided with a quick-plug male connector for testing.

4. The semi-automatic testing device for power modules according to claim 3, wherein: A through hole is formed on the outer side of the lifting guide rail slider mounting plate, and a cooling fan is fixedly mounted on the through hole.

5. The semi-automatic testing device for power modules according to claim 4, characterized in that: The vertical movement mechanism includes a lifting guide rail, a lifting guide rail slider, a lifting guide rail slider connecting plate, a servo module, and a servo module connecting plate; The lifting guide rail is vertically fixed to the inner side of the lifting guide rail slider mounting plate, and the lifting guide rail slider is slidably connected to the lifting guide rail; the lifting guide rail slider can slide up and down along the lifting guide rail; One end of the lifting guide rail slider away from the lifting guide rail slider mounting plate is fixedly connected to the lifting guide rail slider connecting plate; The servo module is vertically fixed on the inner side of the servo module mounting plate; The servo module connecting plate is installed on the servo module; the servo module is used to drive the servo module connecting plate to move up and down.

6. The semi-automatic testing device for power modules according to claim 5, characterized in that: The two ends of the lifting platform bottom plate are respectively fixedly connected to the lifting guide rail slider connecting plate and the servo module connecting plate; The forward and backward moving mechanism includes a left and right moving guide rail slider and a gear rack slide; The left and right movable guide rail sliders are installed on the bottom plate of the lifting platform, and the gear rack slide is slidably connected to the left and right movable guide rail sliders; the gear rack slide can slide left and right along the left and right movable guide rail sliders; The forward and backward moving mechanism includes a forward and backward moving guide rail slider connecting plate, a forward and backward moving guide rail slider, and a trapezoidal screw module; The front and rear movable guide rail slider connecting plate is installed on the gear rack slide; the front and rear movable guide rail slider and the trapezoidal screw module are installed on the front and rear movable guide rail slider connecting plate; the front and rear movable guide rail sliders are located on the left and right sides of the trapezoidal screw module; The power module installation mechanism includes a heating platform connecting plate, a heating platform, and a power module quick-change plate; The heating table connecting plate is slidably connected to the front and rear movable guide rail slider, and the heating table connecting plate can slide back and forth along the front and rear movable guide rail slider; The trapezoidal screw module is fixedly connected to the bottom of the heating platform connecting plate, and the top of the heating platform connecting plate is fixedly connected to the bottom of the heating platform; The heating table is fixed with pins; the power module quick-change plate is fixed with pins and has pin holes; The power module quick-change plate is detachably connected to the pins on the heating platform through the pin holes; the pins on the power module quick-change plate are detachably connected to the mounting holes on the power module to be tested.

7. The semi-automatic testing device for power modules according to claim 6, characterized in that: The test bench includes a test circuit board mounting plate fixing plate 1, a test circuit board mounting plate fixing plate 2, a test circuit board mounting plate fixing plate 3, and a test circuit board mounting plate; The third fixing plate of the test circuit board mounting plate is fixed to the inner side of the mounting plate of the lifting guide rail slider, and the third fixing plate of the test circuit board mounting plate is located above the lifting guide rail slider; The second test circuit board mounting plate fixing plate and the first test circuit board mounting plate fixing plate are located on both sides of the vertically mounted servo module, and their heights correspond to the third test circuit board mounting plate fixing plate; The upper end of the test circuit board mounting plate fixing plate 3 is fixedly connected to the left end of the test circuit board mounting plate, and the right end of the test circuit board mounting plate is fixedly connected to the test circuit board mounting plate fixing plate 2 and the test circuit board mounting plate fixing plate 1 respectively; The test circuit board and the test probe are installed on the test circuit board mounting plate, and the test circuit board is also connected to a test quick-plug female connector.

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