IGBT (Insulated Gate Bipolar Translator) module substrate radian measuring equipment

Abstract

The utility model provides an IGBT module substrate radian measuring device, comprising a housing, an operation panel assembly, a precision motion assembly and a sensing assembly, and the IGBT module substrate radian measuring device has the beneficial effects that data acquisition is carried out on multi-point positions of an IGBT module substrate through a sensor on the sensing assembly, and the acquired data is transmitted to the device for data processing; the radian of the substrate is detected before the IGBT module is installed, so that the percent of pass of the IGBT module is ensured, the IGBT module can be correctly installed in the later period, a precise workpiece to be detected is arranged in the precise workpiece tray, accurate positioning of the IGBT module substrate is ensured, taking and placing of the IGBT module substrate are facilitated, and the IGBT module substrate is prevented from being damaged. The precise workpiece tray can automatically position and lock the measured IGBT module substrate, can measure the radian of the IGBT module substrate at the same time, and can replace the IGBT module substrate at any time.

Description

Technical Field

[0001] The utility model relates to the technical field of IGBT modules, in particular to an IGBT module substrate radian measuring device.

Background Art

[0002] IGBT (Insulated Gate Bipolar Transistor) has the performance characteristics of high frequency, high voltage, large current, especially easy to turn on and off. It is the most representative product of the third revolution of power electronics technology recognized internationally. So far, it has developed to the sixth generation, and the commercialization has developed to the fifth generation. At present, IGBTs have been widely used in various industries of the national economy.

[0003] At present, the domestic IGBT module industry is in the development stage. The testing technology for medium and small power level IGBT modules is relatively mature, but the production testing of high-voltage and high-power level IGBT modules is just in the initial stage of development.

[0004] According to the feedback from engineering applications, in engineering applications, the failure damage rate of high-voltage and high-power IGBTs is much higher than that of low-voltage ones. According to incomplete statistics, more than 90% of the faults in medium and high-voltage inverters are caused by IGBT failures, and the annual failure rate is relatively high. The reliability problem of high-power IGBTs has attracted the attention of relevant domestic industries, and it has become crucial to improve the reliability of high-power IGBTs. Since the IGBT module bottom plate has a radian, an incorrect installation method may lead to the failure of the IGBT module. In the use of IGBTs, the bottom plate plays an important role in the heat dissipation of the whole module. The contact plane between the bottom plate and the radiator directly affects the uniformity of IGBT heat dissipation. In order to ensure good heat conduction between the IGBT module bottom plate and the radiator, strict requirements are imposed on the radian of the IGBT bottom plate.

[0005] The IGBT module is a modular semiconductor product formed by bridging and encapsulating IGBTs and FWDs through a specific circuit. To ensure the stable and reliable operation of the IGBT module, the heat dissipation performance of the module is crucial. And to ensure the tight contact between the module bottom plate and the heat sink, the bottom plate of the IGBT module will be deliberately bent to a certain extent during the manufacturing process, so as to ensure the tight fit between the bottom plate and the heat sink when the module fixing screws are tightened. At present, the radian measurement of IGBT modules mostly uses contact methods. This measurement method has few sampling points and is difficult to comprehensively reflect the overall bending of the module bottom plate. Moreover, contact testing is likely to damage the surface of the bottom plate, resulting in poor heat dissipation during use, and thus causing damage to the IGBT after long-term use.

[0006] Chinese Patent CN219084025U discloses an IGBT module backplane radian testing device, including a frame, characterized in that: a linear module is arranged at the top of the frame, a servo motor is arranged at the top of the frame and on one side of the linear module, a module carrier is arranged on the linear module, and a laser rangefinder is arranged at the top of the linear module. By providing a laser rangefinder, a module carrier, a linear module, a servo motor and a frame, a non-contact measurement method for the radian of the IGBT module is given. The laser rangefinder is used to scan the distances between various points on the module bottom plate and the reference plane, and a three-dimensional model of the module bottom plate is established, so that the bending degree of the module can be accurately and comprehensively measured, and then the overall radian of the module bottom plate can be calculated.

Utility Model Content

[0007] The purpose of the present utility model is to provide a new IGBT module substrate radian measuring device to solve the above technical problems. The sensor on the sensing component collects data at multiple positions of the IGBT module substrate, transmits the collected data to the device for data processing, and displays it on the display screen of the operation panel. Before installing the IGBT module, the radian of the substrate is detected to ensure the qualified rate of the IGBT module, so that the IGBT module can be correctly installed later. The precision workpiece to be measured is arranged in the precision workpiece tray to ensure the accurate positioning of the IGBT module substrate and facilitate the picking and placing of the IGBT module substrate. The precision workpiece tray can automatically position and lock the IGBT module substrate to be measured, can measure the IGBT module substrate simultaneously, and can replace the IGBT module substrate at any time.

[0008] The present utility model is realized through the following technical solutions:

[0009] An IGBT module substrate radian measurement device, comprising a housing, an operation panel assembly, a precision motion assembly, and a sensing assembly. The operation panel assembly is provided at the front end of the housing. The precision motion assembly is provided on the top of the housing. The sensing assembly is provided above the precision motion assembly. The operation panel assembly is electrically connected to the precision motion assembly and the sensing assembly. The precision motion assembly includes a precision motion mounting base, a precision motion drive motor mounting plate, a precision motion drive motor, a precision motion drive motor fixing block, a precision motion guide rail mounting plate, a precision motion guide rail, a precision motion slider base, a precision motion slider, a precision workpiece tray, and a precision workpiece to be measured. The precision motion mounting base is mounted on the frame top plate at the top of the housing. A motor groove is provided in the middle of the precision motion mounting base. The precision motion drive motor is fixed to the left side of the precision motion mounting base through the precision motion drive motor mounting plate. The output shaft of the precision motion drive motor passes through the motor groove in the middle of the precision motion mounting base and the precision motion slider base and is connected to the precision motion drive motor fixing block. The precision motion drive motor fixing block is embedded in the right side of the motor groove in the middle of the precision motion mounting base. Precision motion guide rail mounting plates are provided on the outer side walls on both sides of the precision motion mounting base. Precision motion guide rails are provided on the precision motion guide rail mounting plates. The precision motion slider base is mounted on the precision motion guide rails. A precision motion slider is provided on the precision motion slider base. A precision workpiece tray is provided on the precision motion slider. A precision workpiece to be measured is provided in the precision workpiece tray. The precision workpiece to be measured is locked in the precision workpiece tray through a precision workpiece nut. The sensor on the sensing assembly aligns with the radian data of the precision workpiece to be measured in the precision workpiece tray for measurement and acquisition.

[0010] Furthermore, the housing includes a frame, a power module, a main control circuit module, a charging plug, a frame rear cover, and a frame top plate. An operation panel mounting position is provided at the front end of the frame. A cavity is provided inside the frame. The main control circuit module is provided in the cavity. A power module is provided on one side of the main control circuit module. A top plate mounting position is provided on the top of the frame. The frame top plate is mounted in the top plate mounting position on the top of the frame. A rear cover groove is provided at the rear end of the frame. The frame rear cover is embedded in the rear cover groove at the rear end of the frame. A plug mounting position is provided on the right side of the frame. The charging plug is embedded in the plug mounting position on the right side of the frame. The power module is electrically connected to the main control circuit module and the charging plug. The main control circuit module is electrically connected to the operation panel assembly.

[0011] Further, the operation panel assembly includes an operation panel frame, an operation panel mounting plate, an operation panel display screen, an operation panel mounting bracket, an operation panel power supply, an operation panel main control circuit board, an operation panel button, and an operation panel touch screen. The operation panel frame is embedded in the operation panel mounting position at the front end of the frame, and the power module, the main control circuit module, and the frame top plate are seamlessly docked and fastened to the frame. An operation panel mounting plate is provided inside the operation panel frame. The operation panel main control circuit board is provided on the operation panel mounting plate. An operation panel power supply is provided on one side of the operation panel main control circuit board. A mounting bracket position is provided at the top of the operation panel frame. The operation panel mounting bracket is embedded in the mounting bracket position at the top of the operation panel frame. A display screen mounting groove is provided in the middle of the operation panel mounting bracket. The operation panel display screen is embedded in the display screen mounting groove in the middle of the operation panel mounting bracket. Button mounting holes are provided on the right side of the operation panel mounting bracket. The operation panel button is embedded in the button mounting holes on the right side of the operation panel mounting bracket. The operation panel touch screen seamlessly docks and fastens the operation panel display screen to the operation panel mounting bracket. The operation panel power supply is electrically connected to the main control circuit module. The operation panel power supply is electrically connected to the operation panel main control circuit board, the operation panel button, and the operation panel touch screen. The operation panel main control circuit board is electrically connected to the operation panel button and the operation panel touch screen.

[0012] Further, the sensing assembly includes a sensing bracket, a sensing mounting plate, sensors, and sensing fixing parts. The sensing bracket is mounted on one side of the precision motion mounting seat. A sensing mounting plate is provided at the top of the sensing bracket. A sliding groove is provided on the sensing mounting plate. A plurality of sensors are provided in the sliding groove. The sensors are fixed in the sliding groove on the sensing mounting plate through the sensing fixing parts. The sensors are respectively electrically connected to the power module and the main control circuit module. The sensors are electrically connected to the operation panel main control circuit board. The sensors are aligned to measure and collect the arc data of the precision workpiece to be measured in the precision workpiece tray.

[0013] Further, cushion feet are provided at the four corners of the bottom of the frame.

[0014] Further, cushion feet are provided at the four corners of the bottom of the operation panel frame.

[0015] Further, a plurality of heat dissipation holes are provided on the rear cover of the frame.

[0016] The beneficial effects of the present utility model are as follows: The sensors on the sensing component collect data at multiple positions on the substrate of the IGBT module, transmit the collected data to the device for data processing, and display it on the display screen of the operation panel. The curvature of the substrate is detected before the installation of the IGBT module to ensure the qualification rate of the IGBT module, enabling the correct installation of the IGBT module in the later stage. The precision workpiece to be measured is arranged in the precision workpiece tray to ensure the accurate positioning of the substrate of the IGBT module, facilitating the picking and placing of the substrate of the IGBT module. The precision workpiece tray can automatically position and lock the substrate of the IGBT module to be measured, measure the substrate of the IGBT module simultaneously, and can replace the substrate of the IGBT module at any time. The structure is simple, the design is ingenious, the occupied space is small, and the cost is low.

Explanation of the Drawings

[0017] Figure 1 It is a schematic structural diagram of the IGBT module substrate curvature measuring device of the present utility model;

[0018] Figure 2 It is an exploded structural diagram of the IGBT module substrate curvature measuring device of the present utility model;

[0019] Figure 3 It is a schematic structural diagram of the housing of the present utility model;

[0020] Figure 4 It is an exploded structural diagram of the housing of the present utility model;

[0021] Figure 5 It is a schematic structural diagram of the operation panel assembly of the present utility model;

[0022] Figure 6 It is an exploded structural diagram of the operation panel assembly of the present utility model;

[0023] Figure 7 It is a schematic structural diagram of the precision motion assembly of the present utility model;

[0024] Figure 8 It is an exploded structural diagram of the precision motion assembly of the present utility model;

[0025] Figure 9 It is a schematic structural diagram of the sensing component of the present utility model;

[0026] Figure 10 It is an exploded structural diagram of the sensing component of the present utility model;

[0027] Reference numerals: 1, housing; 11, frame; 110, operation panel mounting position; 111, cavity; 112, top plate mounting position; 113, foot pad; 114, plug mounting position; 12, power module; 13, main control circuit module; 14, charging plug; 15, frame rear cover; 16, frame top plate; 2, operation panel assembly; 21, operation panel frame; 210, mounting rack position; 22, operation panel mounting plate; 23, operation panel display screen; 24, operation panel mounting rack; 240, display screen mounting groove; 241, button mounting hole; 25, operation panel power supply; 26, operation panel main control circuit board; 27, operation panel button; 28, operation panel touch screen; 3, precision motion assembly; 301, precision motion mounting base; 3010, motor groove; 302, precision motion drive motor mounting plate; 303, precision motion drive motor; 304, precision motion drive motor fixing block; 305, precision motion guide rail mounting plate; 306, precision motion guide rail; 307, precision motion slider base; 308, precision motion slider; 309, precision workpiece tray; 310, precision workpiece to be measured; 4, sensing assembly; 41, sensing bracket; 42, sensing mounting plate; 420, chute; 43, sensor; 44, sensing fixing piece.

Detailed implementation manners

[0028] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation manners:

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs; the terms used in the description of this application in the specification are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification and claims of this application or the above drawings are used to distinguish different objects and are not used to describe a specific order.

[0030] Referring to "embodiment" herein means that the specific features, structures or characteristics described in conjunction with the embodiment can be included in at least one embodiment of this application. The phrase appears in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0031] Refer to Figure 1 , Figure 2 , Figure 7 , Figure 8As shown, an IGBT module substrate radian measurement device includes a housing, an operation panel assembly, a precision motion assembly, and a sensing assembly. The front end of the housing is provided with an operation panel assembly, the top of the housing is provided with a precision motion assembly, and a sensing assembly is provided above the precision motion assembly. The operation panel assembly is electrically connected to the precision motion assembly and the sensing assembly. The precision motion assembly includes a precision motion mounting base, a precision motion drive motor mounting plate, a precision motion drive motor, a precision motion drive motor fixing block, a precision motion guide rail mounting plate, a precision motion guide rail, a precision motion slider base, a precision motion slider, a precision workpiece tray, and a precision workpiece to be measured. The precision motion mounting base is installed on the frame top plate at the top of the housing. A motor groove is provided in the middle of the precision motion mounting base. The precision motion drive motor is fixed to the left side of the precision motion mounting base through the precision motion drive motor mounting plate. The output shaft of the precision motion drive motor passes through the motor groove in the middle of the precision motion mounting base and the precision motion slider base and is connected to the precision motion drive motor fixing block. The precision motion drive motor fixing block is embedded in the right side of the motor groove in the middle of the precision motion mounting base. Precision motion guide rail mounting plates are provided on the outer side walls on both sides of the precision motion mounting base. Precision motion guide rails are provided on the precision motion guide rail mounting plates. The precision motion slider base is installed on the precision motion guide rails. A precision motion slider is provided on the precision motion slider base. A precision workpiece tray is provided on the precision motion slider. A precision workpiece to be measured is provided in the precision workpiece tray. The precision workpiece to be measured is locked in the precision workpiece tray through a precision workpiece nut. The sensor on the sensing assembly aligns with the radian data of the precision workpiece to be measured in the precision workpiece tray for measurement and acquisition.

[0032] Refer to as Figure 3 、 Figure 4 As shown, the housing includes a frame, a power module, a main control circuit module, a charging plug, a frame rear cover, and a frame top plate. An operation panel mounting position is provided at the front end of the frame. A cavity is provided inside the frame. The main control circuit module is provided in the cavity. A power module is provided on one side of the main control circuit module. A top plate mounting position is provided at the top of the frame. The frame top plate is installed in the top plate mounting position at the top of the frame. A rear cover groove is provided at the rear end of the frame. The frame rear cover is embedded in the rear cover groove at the rear end of the frame. A plug mounting position is provided on the right side of the frame. The charging plug is embedded in the plug mounting position on the right side of the frame. The power module is electrically connected to the main control circuit module and the charging plug. The main control circuit module is electrically connected to the operation panel assembly.

[0033] Refer to as Figure 5 、 Figure 6As shown in the figure, the operation panel assembly includes an operation panel frame, an operation panel mounting plate, an operation panel display screen, an operation panel mounting bracket, an operation panel power supply, an operation panel main control circuit board, an operation panel button, and an operation panel touch screen. The operation panel frame is embedded in the operation panel mounting position at the front end of the frame, and the power module, the main control circuit module, and the frame top plate are seamlessly docked and fastened to the frame. Inside the operation panel frame, there is an operation panel mounting plate, and on the operation panel mounting plate, there is an operation panel main control circuit board. On one side of the operation panel main control circuit board, there is an operation panel power supply. On the top of the operation panel frame, there is a mounting bracket position, and the operation panel mounting bracket is embedded in the mounting bracket position on the top of the operation panel frame. In the middle of the operation panel mounting bracket, there is a display screen mounting groove, and the operation panel display screen is embedded in the display screen mounting groove in the middle of the operation panel mounting bracket. On the right side of the operation panel mounting bracket, there are button mounting holes, and the operation panel buttons are embedded in the button mounting holes on the right side of the operation panel mounting bracket. The operation panel touch screen seamlessly docks and fastens the operation panel display screen to the operation panel mounting bracket. The operation panel power supply is electrically connected to the main control circuit module, and the operation panel power supply is electrically connected to the operation panel main control circuit board, the operation panel buttons, and the operation panel touch screen. The operation panel main control circuit board is electrically connected to the operation panel buttons and the operation panel touch screen.

[0034] Refer to as Figure 9 , Figure 10 As shown in the figure, the sensing assembly includes a sensing bracket, a sensing mounting plate, sensors, and sensing fixing parts. The sensing bracket is installed on one side of the precision motion mounting seat. On the top of the sensing bracket, there is a sensing mounting plate. On the sensing mounting plate, there are sliding grooves, and in the sliding grooves, there are several sensors. The sensors are fixed in the sliding grooves on the sensing mounting plate through the sensing fixing parts. The sensors are respectively electrically connected to the power module and the main control circuit module, and the sensors are electrically connected to the operation panel main control circuit board. The sensors are aligned to measure and collect the arc data of the precision workpiece to be measured in the precision workpiece tray.

[0035] Preferably, there are feet at the four corners of the bottom of the frame.

[0036] Preferably, there are feet at the four corners of the bottom of the operation panel frame.

[0037] Based on the disclosure and teachings of the above specification, those skilled in the art to which the present utility model pertains can also make appropriate changes and modifications to the above embodiments. Therefore, the present utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present utility model should also fall within the protection scope of the claims of the present utility model. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the present utility model.

Claims

1. An IGBT module substrate radian measuring device, characterized in that: It includes a housing, an operation panel assembly, a precision motion assembly, and a sensing assembly. The operation panel assembly is provided at the front end of the housing, the precision motion assembly is provided at the top of the housing, the sensing assembly is provided above the precision motion assembly, the operation panel assembly is electrically connected to the precision motion assembly and the sensing assembly. The precision motion assembly includes a precision motion mounting base, a precision motion drive motor mounting plate, a precision motion drive motor, a precision motion drive motor fixing block, a precision motion guide rail mounting plate, a precision motion guide rail, a precision motion slider base, a precision motion slider, a precision workpiece tray, and a precision workpiece to be measured. The precision motion mounting base is mounted on the frame top plate at the top of the housing. There is a motor groove in the middle of the precision motion mounting base. The precision motion drive motor is fixed to the left side of the precision motion mounting base through the precision motion drive motor mounting plate. The output shaft of the precision motion drive motor passes through the motor groove in the middle of the precision motion mounting base and the precision motion slider base and is connected to the precision motion drive motor fixing block. The precision motion drive motor fixing block is embedded in the right side of the motor groove in the middle of the precision motion mounting base. Precision motion guide rail mounting plates are provided on the outer side walls on both sides of the precision motion mounting base. Precision motion guide rails are provided on the precision motion guide rail mounting plates. The precision motion slider base is mounted on the precision motion guide rails. A precision motion slider is provided on the precision motion slider base. A precision workpiece tray is provided on the precision motion slider. A precision workpiece to be measured is provided in the precision workpiece tray. The precision workpiece to be measured is locked in the precision workpiece tray through a precision workpiece nut. The sensor on the sensing assembly aligns with the arc data of the precision workpiece to be measured in the precision workpiece tray for measurement and acquisition.

2. The IGBT module substrate radian measurement device according to claim 1, characterized in that: The housing includes a frame, a power module, a main control circuit module, a charging plug, a frame rear cover, and a frame top plate. An operation panel mounting position is provided at the front end of the frame. There is a cavity inside the frame. The main control circuit module is provided in the cavity. A power module is provided on one side of the main control circuit module. A top plate mounting position is provided at the top of the frame. The frame top plate is mounted in the top plate mounting position at the top of the frame. A rear cover groove is provided at the rear end of the frame. The frame rear cover is embedded in the rear cover groove at the rear end of the frame. A plug mounting position is provided on the right side of the frame. The charging plug is embedded in the plug mounting position on the right side of the frame. The power module is electrically connected to the main control circuit module and the charging plug. The main control circuit module is electrically connected to the operation panel assembly.

3. The IGBT module substrate radian measuring device according to claim 2, characterized in that: The operation panel assembly includes an operation panel frame, an operation panel mounting plate, an operation panel display screen, an operation panel mounting bracket, an operation panel power supply, an operation panel main control circuit board, an operation panel button, and an operation panel touch screen. The operation panel frame is embedded in the operation panel mounting position at the front end of the frame, and the power module, the main control circuit module, and the frame top plate are seamlessly butt-jointed and fastened to the frame. An operation panel mounting plate is provided inside the operation panel frame, and an operation panel main control circuit board is provided on the operation panel mounting plate. An operation panel power supply is provided on one side of the operation panel main control circuit board. A mounting bracket position is provided at the top of the operation panel frame, and the operation panel mounting bracket is embedded in the mounting bracket position at the top of the operation panel frame. A display screen mounting groove is provided in the middle of the operation panel mounting bracket, and the operation panel display screen is embedded in the display screen mounting groove in the middle of the operation panel mounting bracket. Button mounting holes are provided on the right side of the operation panel mounting bracket, and the operation panel buttons are embedded in the button mounting holes on the right side of the operation panel mounting bracket. The operation panel touch screen seamlessly butt-joints and fastens the operation panel display screen to the operation panel mounting bracket. The operation panel power supply is electrically connected to the main control circuit module, the operation panel power supply is electrically connected to the operation panel main control circuit board, the operation panel buttons, and the operation panel touch screen, and the operation panel main control circuit board is electrically connected to the operation panel buttons and the operation panel touch screen.

4. The IGBT module substrate radian measuring device according to claim 1, wherein: The sensing assembly includes a sensing bracket, a sensing mounting plate, sensors, and sensing fixing parts. The sensing bracket is mounted on one side of the precision motion mounting seat. A sensing mounting plate is provided at the top of the sensing bracket. A chute is provided on the sensing mounting plate, and several sensors are provided in the chute. The sensors are fixed in the chute on the sensing mounting plate through the sensing fixing parts. The sensors are respectively electrically connected to the power module and the main control circuit module, and the sensors are electrically connected to the operation panel main control circuit board. The sensors are aligned to measure and collect the arc data of the precision workpiece to be measured in the precision workpiece tray.

5. The IGBT module substrate radian measurement device according to claim 2, characterized in that: Pad feet are provided at the four corners of the bottom of the frame.

6. The IGBT module substrate radian measurement device according to claim 3, characterized in that: Pad feet are provided at the four corners of the bottom of the operation panel frame.

7. The IGBT module substrate radian measurement device according to claim 2, wherein: Several heat dissipation holes are provided on the rear cover of the frame.

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