IGBT (Insulated Gate Bipolar Translator) rapid testing device

Abstract

The utility model provides an IGBT rapid testing device, and relates to the technical field of wind power generation equipment, the IGBT rapid testing device comprises a testing body, the top of the testing body is provided with three mounting grooves at equal intervals, a first connecting plate is installed and connected in the mounting grooves and close to the inner wall of one end, and a second connecting plate is installed and connected in the first connecting plate; second connecting plates are arranged in the mounting grooves and close to the other ends, and IGBT modules are mounted between the first connecting plates and the second connecting plates. According to the utility model, the control panel controls the driving battery to conduct the IGBT modules, at this time, the three indicating lamps should be all on, when a certain lamp is not on, the corresponding IGBT module cannot be conducted, which means that the corresponding IGBT module is damaged, at this time, the three indicating lamps should be all off by turning off the turn-off voltage device, and if a certain lamp is on, the three indicating lamps should be turned off. Therefore, the effect of indicating that the corresponding IGBT module cannot be normally turned off can be achieved, so that the effect of quickly detecting the corresponding IGBT module can be achieved, and the detection efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power generation equipment, in particular to an IGBT fast testing device. Background Art

[0002] As the dependence on fossil fuels decreases, people are turning to renewable energy, especially wind energy. Wind power generation technology has developed rapidly in the past few decades and has become an important part of modern energy production. However, under extreme climatic conditions, the Crowbar module of the Dongqi 1.5MW Clu inverter in our Rama and Lunan wind farms was damaged many times due to lightning strikes. The cost of replacing the inverter Crowbar as a whole is high. The site generally adopts the method of replacing the Crowbar IGBT module and driver board separately. Moreover, the Crowbar IGBT conduction measured by a multimeter on site is fine, but the Crowbar still reports a fault when used on the unit, and even the Crowbar driver board is broken.

[0003] Existing IGBTs usually require multiple pins to be measured back and forth multiple times with a multimeter, and the test results usually cannot directly reflect the actual situation, and thus cannot quickly determine whether the IGBT is faulty, which results in low detection efficiency of the tester. Utility Model Content

[0004] The utility model mainly provides a testing device which can quickly and accurately detect whether an IGBT module is good or bad.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an IGBT rapid test device, comprising: a test body, three installation grooves are opened at equal intervals on the top of the test body, a first connecting plate is installed and connected to the inner wall of the installation groove and close to one end, a second connecting plate is installed in the installation groove and close to the other end, an IGBT module is installed between the first connecting plate and the second connecting plate, a sliding hole is opened between the installation grooves, a connecting block is embedded and slidably connected in the sliding hole, both ends of the connecting block are fixedly connected to the second connecting plate, a screw rod is penetrated and threadedly connected to the surface of the connecting block, a square cavity is opened in the test body, a first gear is provided in the square cavity and close to both ends, one end of the screw rod penetrates the inner wall of one end of the sliding hole and is fixedly connected to the first gear, a second gear is provided in the square cavity and located between the first gears, an indicator light is embedded and installed at equal intervals on the top of the test body and close to one end, a driving battery is embedded and installed at one end of the test body, a cut-off voltage is provided in the test body and on one side of the driving battery, and a control panel is installed on the surface of the test body.

[0006] Preferably, support legs are fixedly connected to the bottom of the test body and near the four corners of the bottom, and the shape of the support legs is trapezoidal. Through the above arrangement, the support legs can support the four corners of the bottom of the test body.

[0007] Preferably, the tops of the first connecting plate and the second connecting plate are electrically connected with connecting wires, and the connecting wires are electrically connected to the IGBT module. Through the above arrangement, the connecting wires at the tops of the first connecting plate and the second connecting plate can be electrically connected to the IGBT module.

[0008] Preferably, the other end of the screw is rotatably connected to the inner wall bearing at the other end of the sliding hole, and the second gear is meshingly connected to the first gear. Through the upper digital setting, the effect of positioning one end of the screw can be achieved. At this time, the rotation of the first gear drives the rotation of the second gear.

[0009] Preferably, one end of the test body passes through and is rotatably connected to a rotating member, and one end of the rotating member is fixedly connected to the second gear. Through the above arrangement, the rotating member can easily drive the second gear to rotate.

[0010] Preferably, the shut-off voltage device is electrically connected to the first connecting plate and the driving battery, and the indicator light is electrically connected to the second connecting plate. Through the above arrangement, the shut-off voltage device can power on and off the first connecting plate and the driving battery, and at the same time, the indicator light can be powered on through the second connecting plate.

[0011] Compared with the prior art, the advantages and positive effects of the utility model are:

[0012] 1. In the utility model, the control panel is used to control the driving battery to conduct to the IGBT module. At this time, all three indicator lights should be on. When a certain light is off, the corresponding IGBT module cannot be conducted, indicating that the corresponding IGBT module is damaged. At this time, the voltage regulator is turned off. At this time, all three indicator lights should be off. If a certain light is still on, it can indicate that the corresponding IGBT module cannot be shut down normally, thereby achieving the effect of quickly detecting the corresponding IGBT module, thereby improving the detection efficiency.

[0013] 2. In the utility model, the second gear is driven to rotate by the rotating member, the second gear rotation drives the first gear rotation, the first gear rotation drives the screw rotation, the screw rotation drives the connecting block to move, the connecting block movement drives the second connecting plate to move, which can clamp and fix IGBT modules of different sizes, and can prevent shaking during the IGBT module detection process and affect the detection result. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1The utility model provides a three-dimensional diagram of the overall structure of an IGBT rapid testing device;

[0015] Figure 2 The utility model provides an overall structure top view of an IGBT rapid testing device;

[0016] Figure 3 The present invention provides a partial structural stereogram of an IGBT rapid testing device.

[0017] Legend: 1. Test body; 2. Support leg; 3. Mounting slot; 4. First connecting plate; 5. Second connecting plate; 6. Connecting wire; 7. IGBT module; 8. Sliding hole; 9. Connecting block; 10. Screw; 11. Square cavity; 12. First gear; 13. Second gear; 14. Rotating part; 15. Indicator light; 16. Driving battery; 17. Voltage cut-off device; 18. Control panel. DETAILED DESCRIPTION

[0018] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0019] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0020] Embodiment 1, as Figure 1-Figure 3As shown, the utility model provides a technical solution: an IGBT rapid test device, comprising: a test body 1, three installation grooves 3 are opened at equal intervals on the top of the test body 1, a first connecting plate 4 is installed and connected to the inner wall inside the installation groove 3 and close to one end, a second connecting plate 5 is provided inside the installation groove 3 and close to the other end, an IGBT module 7 is installed between the first connecting plate 4 and the second connecting plate 5, a sliding hole 8 is opened between the installation grooves 3, a connecting block 9 is embedded and slidably connected inside the sliding hole 8, both ends of the connecting block 9 are fixedly connected to the second connecting plate 5, a screw 10 is penetrated and threadedly connected on the surface of the connecting block 9, a square cavity 11 is opened inside the test body 1, a first gear 12 is provided inside the square cavity 11 and close to both ends, one end of the screw 10 is penetrated The inner wall of one end of the sliding hole 8 is fixedly connected to the first gear 12, and a second gear 13 is provided inside the square cavity 11 and between the first gears 12. Indicator lights 15 are embedded and installed at equal intervals on the top of the test body 1 and near one end. A driving battery 16 is embedded and installed at one end of the test body 1. A shut-off voltage device 17 is provided inside the test body 1 and on one side of the driving battery 16. A control panel 18 is installed on the surface of the test body 1. The second connecting plate 5 can be moved to clamp and fix the IGBT module 7 by rotating the screw 10 through the connecting block 9. At this time, it is installed on the IGBT module 7 through the connecting line 6. At this time, the control panel 18 can control the shut-off voltage device 17 and the first connecting plate 4 tube light. At this time, the indicator light 15 can be used to know whether the IGBT module 7 is damaged.

[0021] like Figure 1 As shown, support legs 2 are fixedly connected to the bottom of the test body 1 and near the four corners of the bottom. The shape of the support legs 2 is trapezoidal. Through the above arrangement, the support legs 2 can support the four corners of the bottom of the test body 1.

[0022] like Figure 3 As shown, the tops of the first connecting plate 4 and the second connecting plate 5 are electrically connected with connecting wires 6, and the connecting wires 6 are electrically connected to the IGBT module 7. Through the above arrangement, the connecting wires 6 at the tops of the first connecting plate 4 and the second connecting plate 5 can be electrically connected to the IGBT module 7.

[0023] like Figure 2 As shown, the other end of the screw rod 10 is rotatably connected to the inner wall bearing at the other end of the sliding hole 8, and the second gear 13 is meshingly connected to the first gear 12. Through the setting of the above numbers, the effect of positioning one end of the screw rod 10 can be achieved. At this time, the rotation of the first gear 12 drives the second gear 13 to rotate.

[0024] like Figure 2As shown, one end of the test body 1 passes through and is rotatably connected to a rotating member 14, and one end of the rotating member 14 is fixedly connected to the second gear 13. Through the above arrangement, the rotating member 14 can easily drive the second gear 13 to rotate.

[0025] like Figure 2 As shown, the shut-off voltage device 17 is electrically connected to the first connecting plate 4 and the driving battery 16, and the indicator light 15 is electrically connected to the second connecting plate 5. Through the above arrangement, the shut-off voltage device 17 can power on and off the first connecting plate 4 and the driving battery 16, and at the same time, the indicator light 15 can be powered on through the second connecting plate 5.

[0026] The use method and working principle of the device are as follows: by placing the IGBT module 7 into the installation slot 3, the second gear 13 is driven to rotate by the rotating member 14, the second gear 13 rotates to drive the first gear 12 to rotate, the first gear 12 rotates to drive the screw 10 to rotate, the screw 10 rotates to drive the connecting block 9 to move, and the connecting block 9 moves to drive the second connecting plate 5 to move, which can play the role of clamping and fixing IGBT modules 7 of different sizes, and can prevent shaking during the detection process of the IGBT module 7 and affect the detection result. The control panel 18 controls the driving battery 16 to conduct to the IGBT module 7. At this time, the three indicator lights 15 should all be on. When a certain light is not on, the corresponding IGBT module 7 cannot be turned on, indicating that the corresponding IGBT module 7 is damaged. At this time, the voltage regulator 17 is turned off. At this time, the three indicator lights 15 should all be off. If a certain light is still on, it can be said that the corresponding IGBT module 7 cannot be turned off normally, so that the corresponding IGBT module 7 can be quickly detected, thereby improving the detection efficiency.

[0027] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. An IGBT fast testing device, characterized in that: include: A test body (1), wherein three installation grooves (3) are provided at equal intervals on the top of the test body (1), a first connecting plate (4) is installed and connected to the inner wall of the installation groove (3) and close to one end, a second connecting plate (5) is provided inside the installation groove (3) and close to the other end, an IGBT module (7) is installed between the first connecting plate (4) and the second connecting plate (5), a sliding hole (8) is provided between the installation grooves (3), a connecting block (9) is embedded and slidably connected inside the sliding hole (8), both ends of the connecting block (9) are fixedly connected to the second connecting plate (5), a screw (10) is passed through and threadedly connected to the surface of the connecting block (9), and the test body (1) A square cavity (11) is provided inside the test body (1), first gears (12) are provided inside the square cavity (11) and near both ends, one end of the screw rod (10) passes through the inner wall of one end of the sliding hole (8) and is fixedly connected to the first gear (12), a second gear (13) is provided inside the square cavity (11) and between the first gears (12), indicator lights (15) are embedded and installed at equal intervals at the top of the test body (1) and near one end, a driving battery (16) is embedded and installed at one end of the test body (1), a voltage cut-off device (17) is provided inside the test body (1) and on one side of the driving battery (16), and a control panel (18) is installed on the surface of the test body (1).

2. An IGBT rapid testing device according to claim 1, characterized in that: Support legs (2) are fixedly connected to the bottom of the test body (1) and near the four corners of the bottom, and the shape of the support legs (2) is trapezoidal.

3. An IGBT rapid testing device according to claim 1, characterized in that: The tops of the first connecting plate (4) and the second connecting plate (5) are both electrically connected to connecting wires (6), and the connecting wires (6) are electrically connected to the IGBT module (7).

4. The IGBT rapid testing device according to claim 1, characterized in that: The other end of the screw rod (10) is rotatably connected to the inner wall bearing of the other end of the sliding hole (8), and the second gear (13) is meshingly connected to the first gear (12).

5. The IGBT rapid testing device according to claim 1, characterized in that: One end of the test body (1) passes through and is rotatably connected to a rotating member (14), and one end of the rotating member (14) is fixedly connected to the second gear (13).

6. The IGBT rapid testing device according to claim 1, characterized in that: The shutoff voltage device (17) is electrically connected to the first connection board (4) and the driving battery (16), and the indicator light (15) is electrically connected to the second connection board (5).

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