IGBT module PIN position degree detection mechanism

Abstract

The utility model discloses an IGBT module PIN position degree detection mechanism, which comprises a fixed structure, a moving structure and a detection structure, the moving structure is fixed on the fixed structure, and the moving end of the moving structure is connected with the detection structure; the detection structure comprises a fixed seat, a camera, a laser probe and a light source, the fixed seat is fixed on the moving end of the moving structure, and the camera, the laser probe and the light source are arranged on the fixed seat. The detection mechanism has the advantages that the positions of the PIN needles of the IGBT module are shot and detected through the camera, so that the time for manually detecting the PIN needles is greatly shortened, and the working efficiency is improved; the PIN position degree is bound with the PIN of each IGBT module, and a shooting result is automatically stored, so that the detection result of the PIN position degree of the module can be conveniently traced, and the detection flexibility is improved; in addition, the detection mechanism avoids defects caused by manual detection, and the safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of IGBT modules, in particular to an IGBT module PIN needle position detection mechanism. Background Art

[0002] IGBT (Insulated Gate Bipolar Transistor) is a new type of power semiconductor field-controlled self-turning device that integrates the high-speed performance of power MOSFET and the low resistance of bipolar devices. It has the characteristics of high input impedance, low voltage control power consumption, simple control circuit, high voltage resistance, and large current bearing. It is widely used in various power conversions. In order to meet the large market demand, high-efficiency, flexible and intelligent packaging has become the main packaging form of IGBT.

[0003] IGBT modules mainly include copper-clad ceramic substrate structure (DBC), IGBT chip, diode chip, NTC temperature sensor, power terminal, signal terminal, PIN pin, etc. Among them, the detection of the top PIN pin of the IGBT module is particularly important, which affects the use of subsequent products, so the detection of the PIN pin of the IGBT module is the focus of attention in the industry. At present, the market mostly uses manual detection of IGBT module PIN pins, which has low detection efficiency, low detection accuracy, high manual detection cost, and seriously affects the test efficiency of the IGBT module. Utility Model Content

[0004] The technical problem to be solved by the utility model is how to improve the detection efficiency of the PIN position of an IGBT module.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] An IGBT module PIN position detection mechanism comprises a fixed structure, a movable structure and a detection structure, wherein the movable structure is fixed on the fixed structure, and a movable end of the movable structure is connected to the detection structure;

[0007] The detection structure comprises a fixed seat, a camera, a laser probe and a light source. The fixed seat is fixed on the moving end of the moving structure, and the camera, the laser probe and the light source are arranged on the fixed seat.

[0008] The detection mechanism uses a camera to photograph and detect the PIN position of the IGBT module, which greatly shortens the time for manual PIN detection and improves work efficiency; the PIN position is bound to each IGBT module PIN, and the photographed results are automatically saved, which is convenient for tracing the module PIN position detection results in the future and improves the flexibility of detection; in addition, the detection mechanism avoids defects caused by manual detection and improves safety.

[0009] Preferably, the fixed structure comprises a fixed block, a wiring trough bracket, and a wiring trough, the fixed end of the movable structure is fixed on the fixed block, and the fixed block is also connected to the wiring trough via the wiring trough bracket.

[0010] Preferably, the fixing block is further provided with reinforcing ribs.

[0011] Preferably, the mobile structure includes a mobile motor, a guide rail, a slider, and a connecting plate. The mobile motor and the guide rail are fixed on the fixed structure. The output end of the mobile motor is connected to a slider that slides with the guide rail. A connecting plate is provided on the slider, and the connecting plate is connected to the fixed seat.

[0012] Preferably, the moving motor is fixed to the fixed structure via a motor bracket.

[0013] Preferably, a positive limit photoelectric device, an origin limit photoelectric device and a negative limit photoelectric device electrically cooperating with the moving motor are fixed on the guide rail.

[0014] Preferably, the camera is fixed on the fixing seat via a camera bracket.

[0015] Preferably, the laser probe is fixed on the fixing seat via a laser probe bracket.

[0016] Preferably, the light source is fixed on the fixing seat via a light source bracket.

[0017] Preferably, a triangular fixing plate is fixed on the fixing seat, and the light source bracket is fixed on the triangular fixing plate.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] The detection mechanism uses a camera to photograph and detect the PIN position of the IGBT module, which greatly shortens the time for manual PIN detection and improves work efficiency; the PIN position is bound to each IGBT module PIN, and the photographed results are automatically saved, which is convenient for tracing the module PIN position detection results in the future and improves the flexibility of detection; in addition, the detection mechanism avoids defects caused by manual detection and improves safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the fixing structure of an embodiment of the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the mobile structure of the embodiment of the utility model;

[0023] Figure 4 It is a structural schematic diagram of the detection structure of an embodiment of the utility model. DETAILED DESCRIPTION

[0024] In order to facilitate those skilled in the art to understand the technical solution of the utility model, the technical solution of the utility model is further explained in conjunction with the drawings in the specification.

[0025] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0026] In this application, unless otherwise expressly specified and limited, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means two or more, unless otherwise clearly and specifically limited.

[0027] See also Figure 1 This embodiment discloses an IGBT module PIN needle position detection mechanism, including a fixed structure 1, a movable structure 2 and a detection structure 3. The movable structure 2 is fixed on the fixed structure 1, and the movable end of the movable structure 2 is connected to the detection structure 3. The detection structure 3 is driven by the movable structure 2 to move vertically to detect the IGBT module PIN needle below the detection structure 3.

[0028] See also Figure 2 The fixed structure 1 includes a fixed block 11, a wiring trough bracket 12, a wiring trough 13 and a reinforcing rib 14. The fixed end of the mobile structure 2 is fixed on the fixed block 11. The two sides of the fixed block 11 are connected to the wiring trough 13 through the wiring trough bracket 12. In this embodiment, the wiring trough 13 is U-shaped. Through the setting of the wiring trough 13, the wiring of the detection mechanism can be more reasonable, the movement of the mobile structure 2 can be made safer, and the safe operation of the detection mechanism can be guaranteed. The side of the fixed block 11 away from the mobile structure 2 is fixed with a reinforcing rib 14, so that the entire fixed structure 1 can be better fixed on the rear equipment to ensure the stability of the detection mechanism.

[0029] See also Figure 3The mobile structure 2 includes a mobile motor 21, a motor bracket 22, a guide rail 23, a slider 24, a connecting plate 25, a positive limit photoelectric 26, an origin limit photoelectric 27 and a negative limit photoelectric 28. The mobile motor 21 is fixed to the fixed block 11 through the motor bracket 22. The guide rail 23 is fixed to the fixed block 11 along the moving direction of the output end of the mobile motor 21. The output end of the mobile motor 21 is connected to the slider 24 that is slidably matched with the guide rail 23. The slider 24 is provided with a connecting plate 25, and the connecting plate 25 is connected to the detection structure 3. The positive limit photoelectric 26, the origin limit photoelectric 27 and the negative limit photoelectric 28 that are electrically matched with the mobile motor 21 are fixed on the guide rail 23 to control the movement range of the slider 24. Through the drive of the mobile motor 21, the connecting plate 25 can move up and down following the movement of the slider 24, so that the detection structure 3 can continuously adjust the distance between it and each PIN needle, so that the detection mechanism can detect more accurately and with higher precision.

[0030] See also Figure 4 The detection structure 3 includes a fixing seat 31, a camera 32, a camera bracket 33, a laser probe 34, a laser probe bracket 35, a light source 36, a light source bracket 37 and a triangular fixing plate 38. The fixing seat 31 is fixed on the connecting plate 25. The camera 32 is fixed on the fixing seat 31 through the camera bracket 33. Specifically, the lens on the camera 32 is also fixed on the fixing seat 31 through the lens bracket to ensure the stability of the camera 32. The laser probe 34 is fixed on the fixing seat 31 through the laser probe bracket 35. Triangular fixing plates 38 are also fixed on both ends of the fixing seat 31. A light source bracket 37 is fixed on each triangular fixing plate 38. The light source bracket 37 fixes the light source 36.

[0031] Furthermore, the fixing base is provided with a plurality of annular light sources (not marked in the figure) to improve the illumination brightness of the PIN needles.

[0032] The working principle of this embodiment is: the IGBT module is moved to the bottom of the PIN needle position detection structure 3, and the connecting plate 25 is driven by the mobile motor 21 to move up and down following the movement of the slider 24, and the distance between the camera 32, the laser probe 34, and the light source 36 and each PIN needle is continuously adjusted. By photographing and detecting the PIN needle position of the IGBT module through the camera 32, not only can the detection mechanism detect more accurately and with higher precision, but also the detection efficiency of the PIN needle position of the IGBT module can be improved.

[0033] The detection mechanism uses a camera 32 to photograph and detect the position of the PIN pin of the IGBT module, which greatly shortens the time for manual detection of the PIN pin and improves work efficiency; the PIN pin position is bound to each PIN pin of the IGBT module, and the photographed results are automatically saved, which is convenient for tracing the module PIN pin position detection results in the future and improves the flexibility of detection; in addition, the detection mechanism avoids defects caused by manual detection and improves safety.

[0034] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure mark in the claims should not be regarded as limiting the claims involved.

[0035] The above-described embodiments merely represent implementation methods of the utility model, and the protection scope of the utility model is not limited to the above-described embodiments. For those skilled in the art, several modifications and improvements can be made without departing from the concept of the utility model, and all of these belong to the protection scope of the utility model.

Claims

1. An IGBT module PIN position detection mechanism, characterized in that: It comprises a fixed structure, a mobile structure and a detection structure, wherein the mobile structure is fixed on the fixed structure, and the mobile end of the mobile structure is connected to the detection structure; The detection structure comprises a fixed seat, a camera, a laser probe and a light source. The fixed seat is fixed on the moving end of the moving structure, and the camera, the laser probe and the light source are arranged on the fixed seat.

2. An IGBT module PIN position detection mechanism according to claim 1, characterized in that: The fixed structure comprises a fixed block, a wiring trough bracket, and a wiring trough. The fixed end of the movable structure is fixed on the fixed block, and the fixed block is also connected to the wiring trough via the wiring trough bracket.

3. An IGBT module PIN position detection mechanism according to claim 2, characterized in that: The fixing block is also provided with reinforcing ribs.

4. The IGBT module PIN position detection mechanism according to claim 1, characterized in that: The mobile structure includes a mobile motor, a guide rail, a slider, and a connecting plate. The mobile motor and the guide rail are fixed on the fixed structure. The output end of the mobile motor is connected to a slider that slidably cooperates with the guide rail. A connecting plate is provided on the slider, and the connecting plate is connected to the fixed seat.

5. The IGBT module PIN position detection mechanism according to claim 4, characterized in that: The moving motor is fixed on the fixed structure via a motor bracket.

6. The IGBT module PIN position detection mechanism according to claim 4, characterized in that: The guide rail is fixed with a positive limit photoelectric device, an origin limit photoelectric device and a negative limit photoelectric device which are electrically coordinated with the moving motor.

7. The IGBT module PIN position detection mechanism according to claim 1, characterized in that: The camera is fixed on the fixing seat through a camera bracket.

8. The IGBT module PIN position detection mechanism according to claim 1, characterized in that: The laser probe is fixed on the fixing seat through a laser probe bracket.

9. The IGBT module PIN position detection mechanism according to claim 1, characterized in that: The light source is fixed on the fixing seat through a light source bracket.

10. An IGBT module PIN position detection mechanism according to claim 9, characterized in that: A triangular fixing plate is fixed on the fixing seat, and the light source bracket is fixed on the triangular fixing plate.

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