Detection device for substrate curved surface detection after IGBT module installation

Abstract

The utility model relates to the field of IGBT module detection equipment, in particular to a detection device for substrate curved surface detection after the installation of an IGBT module, which comprises a detection mechanism connected with a detection system. The detection system comprises a detection module; the detection module is connected with a control module which is used for receiving a signal transmitted by the detection module and fitting the curved surface of the substrate; the detection module comprises a detection probe arranged in the detection mechanism; the detection mechanism comprises a detection platform, the detection platform comprises a detection panel for placing a to-be-detected part, and the detection panel is provided with a detection hole group and a fixing part; according to the detection device disclosed by the utility model, the curved surface of the substrate under the corresponding torsion can be measured under the action of the corresponding torsion; therefore, the torsion during the installation of the corresponding module and the thickness of the coated heat-conducting silicone grease required by the corresponding torsion can be conveniently determined subsequently.

Description

Technical Field

[0001] The utility model relates to the field of IGBT module detection equipment, in particular to a detection device for detecting the curved surface of a substrate after the IGBT module is installed. Background Art

[0002] The IGBT module will generate large losses during actual operation, and these losses are usually manifested as heat.

[0003] In order to ensure the normal operation of the IGBT module, an appropriate heat sink must be used to transfer the heat to the external environment.

[0004] The heat conduction of the IGBT module is related to the heat dissipation device, the thickness of the thermal grease, the installation torque and the flatness of the IGBT module substrate itself.

[0005] The torque during installation of the IGBT module will affect the surface shape of the substrate and thus the heat dissipation performance of the IGBT module.

[0006] The thickness of thermal grease will affect the heat dissipation performance of the IGBT module. Thin thermal grease will cause air to remain between the substrate and the heat sink, and the thermal conductivity of air is very low, which will affect the overall heat dissipation; thick thermal grease can prevent air from remaining between the substrate and the heat sink, but too thick thermal grease will have greater thermal resistance, thus affecting heat dissipation.

[0007] After installation, the surface shape of the substrate in the IGBT module will be deformed by the heat sink, making it impossible to assess the optimal conditions for the thickness of the thermal grease and the installation torque.

[0008] Moreover, there is currently no device or method that can evaluate the overall curvature of the IGBT module after installation. Generally, a certain thickness of thermal grease is applied and a certain torque is used before installation to directly conduct an experimental evaluation.

[0009] In traditional experiments, the curved surface formed after the substrate is deformed is a difficult point to test. Traditionally, ultrasonic waves, point cloud surface fitting and other methods can be used to achieve the fitting of the substrate surface.

[0010] However, the overall structure of traditional testing equipment is relatively complex, and it is not easy to use. In addition, it cannot simulate the state of the IGBT module in the assembled state when testing samples, which easily leads to the problem of excessive experimental errors.

[0011] Although the existing patent 202011290541.4 - Automatic measurement system and method for complex surfaces of turboshaft engine components can realize the surface fitting of parts; it cannot be directly used for fitting the substrate surface when the IGBT module is assembled.

[0012] Therefore, in order to improve at least one of the above problems, a detection device suitable for measuring the curved surface of an IGBT module substrate is needed. Utility Model Content

[0013] The purpose of the utility model is to provide a substrate curved surface detection device, which can be used to detect the curved surface formed on the substrate of an IGBT module under different assembly torques.

[0014] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0015] A detection device for detecting a curved surface of a substrate after an IGBT module is installed, characterized in that it comprises a detection mechanism connected to a detection system;

[0016] The detection system includes a detection module;

[0017] The detection module is connected to a control module for receiving a signal transmitted from the detection module and for fitting the curved surface of the substrate;

[0018] The detection module includes a detection probe arranged in the detection mechanism;

[0019] The detection mechanism includes a detection platform, the detection platform includes a detection panel for placing the part to be detected, and the detection probe and the part to be detected are distributed on opposite sides of the detection panel;

[0020] The detection panel is provided with a detection hole group and a fixing component;

[0021] The detection hole group includes a plurality of single holes; each of the single holes is distributed in a rectangular array on the detection panel;

[0022] The fixing component includes a mounting hole arranged on the detection panel.

[0023] The detection platform further includes a supporting frame, and the detection panel is arranged on the supporting frame.

[0024] The detection probe is connected to a driving mechanism for driving the detection probe to move.

[0025] The driving mechanism includes a linear module mechanism for connecting the detection probe; the linear module mechanism is a two-dimensional linear module or a three-dimensional linear module.

[0026] The detection panel and the support frame are connected in a detachable manner.

[0027] The mounting holes in the fixing component and the individual holes in the detection hole group are staggered.

[0028] The advantages of the present invention are:

[0029] The utility model discloses a detection device for detecting the curved surface of a substrate after an IGBT module is installed.

[0030] The detection device disclosed in the present invention can obtain the curved surface of the substrate under the corresponding torque, thereby facilitating the subsequent determination of the torque during module installation and the thickness of the thermal grease required for the corresponding torque. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The following is a brief description of the contents and marks in the drawings of the utility model specification:

[0032] Figure 1 It is a structural diagram of the present utility model.

[0033] Figure 2 It is a structural diagram of the utility model when in use.

[0034] The marks in the above figure are:

[0035] 1. Detection panel, 2. Detection hole group, 21. Single hole, 3. Mounting hole, 4. Support frame, 5. Laser probe, 6. 2D linear module, 7. Computer. DETAILED DESCRIPTION

[0036] The following describes the preferred embodiment with reference to the accompanying drawings to further illustrate the specific implementation of the present invention.

[0037] A detection device for detecting the curved surface of a substrate after an IGBT module is installed, characterized in that it includes a detection mechanism, which is connected to a detection system. The detection device disclosed in the utility model can obtain the curved surface of the substrate under the corresponding torque under the action of the corresponding torque; thereby facilitating the subsequent determination of the torque during the installation of the corresponding module and the thickness of the thermal grease required for the corresponding torque.

[0038] Specifically, the detection device disclosed in the present invention is mainly used to detect the overall curved surface formed by the force on the substrate after the IGBT module is installed. Based on the detection of the curved surface, the changes in the overall curved surface of the substrate before and after the installation of the IGBT module can be obtained, and the thickness of the thermal grease to be applied and the torque applied by the screws during installation can be subsequently evaluated and controlled; the production quality of the IGBT module can be improved to a certain extent.

[0039] In the present invention, the detection system includes a detection module, which is connected to a control module for receiving signals transmitted from the detection module and fitting the curved surface of the substrate; the detection module of the present invention includes a detection probe arranged in a detection mechanism; the detection probe generally uses a laser probe 5, and the detection module is mainly an industrial computer 7. In actual use, the detection probe is moved to collect data on the end face of the substrate. After the collection is completed, it is imported into the industrial computer 7, and the curved surface is fitted by the industrial computer 7, thereby realizing the measurement of the curved surface of the substrate.

[0040] The detection mechanism described in the present invention includes a detection platform, which plays a good supporting role and facilitates the installation and placement of the IGBT module to be tested. Specifically, the detection platform described in the present invention includes a detection panel 1 for placing the part to be tested, and the detection probe and the part to be tested are distributed on opposite sides of the detection panel 1; during subsequent use, the detection probe is arranged under the detection panel 1, and by moving the detection probe, multi-position detection operation of the IGBT module to be tested is realized.

[0041] In addition, in the utility model, the detection panel 1 is provided with a detection hole group 2 and a fixing component; in the utility model, the hole group is used for the detection probe to pass through the detection panel 1 to realize the detection of multiple positions of the IGBT module; and the fixing component is used to fasten the IGBT module to be tested; and simulate the actual assembly torque of the IGBT module.

[0042] At the same time, in the present invention, the detection hole group 2 includes multiple single holes 21; each of the single holes 21 is distributed in a rectangular array on the detection panel 1; here, multiple single holes 21 are distributed in parallel in sequence along the horizontal and vertical directions. Based on such a setting, it is convenient to perform detection operations on multiple positions of the IGBT module to be tested.

[0043] In the present invention, the fixing component includes a mounting hole 3 provided on the detection panel 1 ; the mounting hole 3 is provided mainly for subsequently mounting the IGBT module to be tested on the detection panel 1 through fasteners.

[0044] In the present invention, a plurality of mounting holes 3 are provided on the detection panel 1. In actual use, a corresponding mounting hole 3 is selected according to needs to achieve installation and fixation of the IGBT module to be tested.

[0045] Furthermore, in the present invention, the detection platform further comprises a support frame 4 , and the detection panel 1 is arranged on the support frame 4 ; the support frame 4 plays a role of supporting and raising the detection panel 1 , facilitating the installation and arrangement of the detection panel 1 .

[0046] Furthermore, in the present invention, the detection probe is connected to a driving mechanism for driving the detection probe to move; the setting of the driving mechanism facilitates the movement of the detection probe, thereby realizing multi-position detection operation of the IGBT module to be tested.

[0047] At the same time, the driving mechanism in the present invention includes a linear module mechanism for connecting the detection probe; the linear module mechanism is a two-dimensional linear module 6 or a three-dimensional linear module; in general use, a two-dimensional linear module 6 is generally selected, so that the detection probe can be moved on the horizontal plane as needed; it is convenient for subsequent detection operations.

[0048] Furthermore, in the present invention, the detection panel 1 is connected to the support frame 4 in a detachable manner; such a setting facilitates subsequent use, and the detection panel 1 can be replaced as needed, thereby improving the scope of application of the present invention. Specifically, the detection panel 1 can be snapped onto the support frame 4, or it can be connected by bolts or screws.

[0049] Furthermore, in the utility model, the mounting holes 3 in the fixing component and the individual holes 21 in the detection hole group 2 are staggered. Such a setting can avoid the setting of the mounting holes 3 affecting the array distribution of the individual holes 21, and avoid the individual holes 21 and the mounting holes 3 from overlapping with each other, affecting subsequent detection operations.

[0050] specific:

[0051] The utility model discloses a detection device for detecting the curved surface of a substrate after an IGBT module is installed.

[0052] This utility model can evaluate and control the overall curved surface of the IGBT module substrate after installation. Because the IGBT module substrate will be subjected to stress and cause certain deformation during installation, the surface condition of the IGBT module substrate will be different when it is not installed and when it is installed.

[0053] The detection device disclosed by the utility model is installed by simulating the plane of the radiator with a multi-hole detection platform.

[0054] After the IGBT module is installed, the relative height of the IGBT module substrate at the position of each single hole 21 can be measured by taking the reference point or reference surface, thereby simulating the overall curved surface of the substrate when the IGBT module is installed.

[0055] Furthermore, if the curved surface of the substrate after installation is identified, the appropriate thickness of the thermal grease and the appropriate installation torque can be further evaluated.

[0056] Specifically, the overall surface of the substrate is measured by firstly passing the laser probe 5 through each single hole 21 and then measuring it. The two-dimensional linear module 6 of the XY axis can be moved to collect multiple sets of data and finally fit to form a surface.

[0057] The other end of the laser probe 5 is connected to the computer 7 and data can be directly imported into the computer 7 .

[0058] The utility model can measure the deformation of the IGBT module substrate under different torques through the above device, and then evaluate the curved surface condition after installation before subsequent installation and use.

[0059] In the present invention, the surface of the detection panel 1 is horizontal, and has uniformly distributed single holes 21 in both horizontal and vertical directions.

[0060] The diameter of each single hole 21 is 1 mm, and the distance between adjacent single holes 21 is 2 mm.

[0061] In the present invention, the mounting holes 3 are arranged according to the sizes of modules of different packaging types, so that the curved surfaces of modules of different sizes can be tested.

[0062] The two-dimensional linear module 6 can control the laser probe 5 to move on the XY axis to measure the required position point data.

[0063] The laser probe 5 is lower than the bottom surface of the platform by a certain distance (adjustable); the laser probe 5 can accurately measure the distance from the substrate to the reference point or reference surface.

[0064] The computer 7 can directly display the measured data and can fit it into a curved surface through software.

[0065] Example 1:

[0066] Taking an Econo2 packaged IGBT module as an example, first place the module on a perforated testing platform and tighten the screws in the corresponding mounting holes (3) with a torque of 30 N·M. Then, place the module on the measurement platform, set the test starting point and measurement interval, and begin measuring. Data at each point can be viewed on a computer (7). This data can then be used to simulate the curvature of the IGBT module substrate under a torque of 30 N·M.

[0067] It is also possible to produce a new curved surface by adjusting the torque for comparison to determine the appropriate torque and the thickness of the thermal grease required for the corresponding torque.

[0068] Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, they are all within the scope of protection of the present invention.

Claims

1. A detection device for detecting the curved surface of a substrate after an IGBT module is installed, characterized in that: comprising a detection mechanism connected to a detection system; The detection system includes a detection module, and the detection module is connected to a control module for receiving a signal transmitted by the detection module and for fitting the curved surface of the substrate; The detection module includes a detection probe arranged in the detection mechanism; The detection mechanism includes a detection platform, the detection platform includes a detection panel for placing the part to be detected, and the detection probe and the part to be detected are distributed on opposite sides of the detection panel; The detection panel is provided with a detection hole group and a fixing component; The detection hole group includes a plurality of single holes; each of the single holes is distributed in a rectangular array on the detection panel; The fixing component includes a mounting hole arranged on the detection panel.

2. The detection device for detecting the curved surface of a substrate after installation of an IGBT module according to claim 1, characterized in that: The detection platform further includes a supporting frame, and the detection panel is arranged on the supporting frame.

3. A detection device for detecting the curved surface of a substrate after installation of an IGBT module according to any one of claims 1 to 2, characterized in that: The detection probe is connected to a driving mechanism for driving the detection probe to move.

4. The detection device for detecting the curved surface of a substrate after installation of an IGBT module according to claim 3, characterized in that: The driving mechanism includes a linear module mechanism for connecting the detection probe; the linear module mechanism is a two-dimensional linear module or a three-dimensional linear module.

5. The detection device for detecting the curved surface of a substrate after the IGBT module is installed according to claim 2, characterized in that: The detection panel and the support frame are connected in a detachable manner.

6. The detection device for detecting the curved surface of a substrate after the IGBT module is installed according to claim 2, characterized in that: The mounting holes in the fixing component and the individual holes in the detection hole group are staggered.

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