Igbt module with insulation protection structure

Abstract

The utility model relates to an igbt module, in particular to an igbt module with an insulation protection structure. The utility model provides an igbt module with an insulation protection structure, which comprises an igbt module, an asbestos ring, a sliding block, a fixed disc, a rotating assembly and the like, the igbt module is provided with three wire plugging ports, the fixed disc is arranged at the corresponding positions of the wire plugging ports, the fixed disc is provided with three radial straight grooves, the sliding block is connected in the straight grooves in a sliding manner, the centripetal end of the sliding block is connected with the asbestos ring, and the rotating assembly is connected with the asbestos ring. The rotating assembly is arranged in the fixed disc and can drive the sliding block to move in the radial direction. The asbestos ring can be controlled to be unfolded or closed by poking the poking rod, so that the igbt module plug wire is clamped, fixed and insulated, and current leakage is prevented.

Description

Technical Field

[0001] The utility model relates to an IGBT module, in particular to an IGBT module with an insulation protection structure. Background Art

[0002] As the core part of rail transit traction converter, the design of IGBT power module directly affects the performance of the product. In IGBT power module, when the level of a single IGBT component cannot meet the system capacity requirements, multiple IGBT components can generally be connected in parallel to meet the requirements.

[0003] However, in the prior art, the stray inductance of the main circuit of the IGBT power module is large, and the stray inductance of the current circuit where each parallel IGBT element is located has poor consistency. The difference in stray inductance causes an imbalance in the current flowing through the parallel IGBT elements, which may cause some IGBT elements to age faster and affect the reliability of the converter, thereby affecting the normal operation of the traction converter. Therefore, the existing IGBT module lacks insulation function and poses many hazards in its daily use.

[0004] The utility model aims to design an IGBT module with an insulation protection structure. Utility Model Content

[0005] In order to overcome the disadvantage of current unbalance in the existing IGBT module, which leads to current dissipation, the utility model provides an IGBT module with an insulation protection structure.

[0006] An IGBT module with an insulating protection structure comprises an IGBT module, an asbestos ring, a slider, a fixed disk and a rotating assembly. The IGBT module is provided with three wire insertion ports, and fixed disks are provided at corresponding positions of the wire insertion ports. The fixed disk is provided with three radial straight grooves, and the slider is slidably connected in the straight grooves. The asbestos ring is connected to the centripetal end of the slider. The rotating assembly is arranged in the fixed disk, and the rotating assembly can drive the slider to move radially.

[0007] Optionally, the asbestos ring can form a closed ring.

[0008] Optionally, the rotating assembly consists of a rotating disk and a dial part. The fixed disk is hollow inside and the rotating disk is rotatably connected to the fixed disk. The rotating disk is provided with arc grooves equal in number to the straight grooves. The arc grooves are bent counterclockwise toward the center of the circle, and the slider slides in the straight grooves and the arc grooves at the same time.

[0009] Optionally, the shifting part is composed of a shifting rod and a return spring, the shifting rod is fixed to the side of the rotating disk, and the return spring is connected between the shifting rod and the fixed disk.

[0010] Optionally, an insulating cover is also included, which is rotatably connected to the outside of the IGBT module through a hinge. The insulating cover is made of plastic and has a side with holes and slots equal to the number of the fixing disk.

[0011] Optionally, it also includes a conductive ring, a conductive rod and a rubber block. The conductive ring is arranged in the IGBT module plug-in port, the conductive rod is wound around the outside of the conductive ring, and the end of the conductive rod is connected to a rubber block fixed in the IGBT module.

[0012] Optionally, it also includes a spring rod, a wire and an electric display screen, the spring rod is slidably connected to the IGBT module, the electric display screen is arranged on the side of the IGBT module, and the spring rod is connected to the electric display screen through the wire.

[0013] Optionally, a condensation box and a water pipe are also included. The condensation box is fixed to the side of the IGBT module. The condensation box is connected to the water pipe coiled and fixed inside the IGBT module. A water pump is arranged between the condensation box and the water pipe.

[0014] Optionally, it also includes an elastic clamping rod, a rubber pad and a valve disc, the elastic clamping rod is connected to the right-angle bend of the water pipe, the valve disc is connected to the end of the elastic clamping rod, and the outside of the valve disc is connected to the rubber pad.

[0015] Optionally, a bottom plate is also included, the bottom plate is connected to the bottom of the IGBT module, and uniform rubber protrusions are arranged on the bottom plate.

[0016] Compared with the prior art, the utility model has the following advantages: the asbestos ring can be controlled to expand or close by toggling the toggle lever, so that the IGBT module plug wire can be clamped and insulated to prevent current leakage; the use of an electric display screen can timely detect whether the IGBT module is energized; the provision of a condenser can timely perform heat exchange and cooling of the IGBT module, thereby improving the working efficiency of the IGBT module. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0018] Figure 2 It is a three-dimensional structural sectional view of the slider and the rotating ring of the utility model.

[0019] Figure 3 It is a three-dimensional structural cross-sectional view of the conductive ring and the conductive rod of the utility model.

[0020] Figure 4 It is a three-dimensional structural cross-sectional view of the water pipe and condensation box of the utility model.

[0021] Figure 5 It is an enlarged view of the three-dimensional structure of point A of the utility model.

[0022] The meaning of the reference numerals in the figure are as follows: 1: IGBT module, 2: asbestos ring, 3: slider, 4: rotating disk, 5: arc groove, 6: fixed disk, 7: lever, 8: reset spring, 9: insulating cover, 10: conductive ring, 11: conductive rod, 12: rubber block, 13: spring rod, 14: wire, 15: electronic display screen, 16: condensation box, 17: water pipe, 18: elastic clamping rod, 19: rubber pad, 20: valve disc, 21: bottom plate. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Embodiment: An IGBT module with an insulating protection structure, such as Figure 1-Figure 3 As shown, it includes an IGBT module 1, an asbestos ring 2, a slider 3, a fixed disk 6 and a rotating component. The IGBT module 1 is provided with three wire insertion ports, and a fixed disk 6 is provided at the corresponding positions of the wire insertion ports. Three radial straight grooves are opened on the fixed disk 6, and the slider 3 is slidably connected in the straight groove. The asbestos ring 2 is connected to the centripetal end of the slider 3, and the asbestos ring 2 can form a closed ring. The rotating component is arranged in the fixed disk 6, and the rotating component can drive the slider 3 to move radially. The rotating component consists of a rotating disk 4 and a toggle part. The fixed disk 6 is hollow inside, and the rotating disk 4 is rotatably connected in the fixed disk 6. The rotating disk 4 is provided with arc grooves 5 equal to the number of straight grooves, and the arc grooves 5 are bent toward the center of the circle in a counterclockwise direction. The slider 3 slides in the straight grooves and the arc grooves 5 at the same time. The toggle part consists of a toggle rod 7 and a reset spring 8. The toggle rod 7 is fixed to the side of the rotating disk 4, and the reset spring 8 is connected between the toggle rod 7 and the fixed disk 6.

[0025] like Figure 1 As shown, an insulating cover 9 is also included. The insulating cover 9 is rotatably connected to the outside of the IGBT module 1 through a hinge. The insulating cover 9 is made of plastic and has a side surface with a number of holes and slots equal to the number of the fixing plate 6.

[0026] like Figure 3 As shown, it also includes a conductive ring 10, a conductive rod 11 and a rubber block 12. The conductive ring 10 is arranged in the wire insertion port of the IGBT module 1, and the conductive rod 11 is wound around the outside of the conductive ring 10. The end of the conductive rod 11 is connected to the rubber block 12 fixed in the IGBT module 1.

[0027] like Figure 3As shown, it also includes a spring rod 13, a wire 14 and an electric display screen 15. The spring rod 13 is slidably connected to the IGBT module 1, and the electric display screen 15 is arranged on the side of the IGBT module 1. The spring rod 13 is connected to the electric display screen 15 through the wire 14.

[0028] like Figure 3 and Figure 4 As shown, it also includes a condensation box 16 and a water pipe 17. The condensation box 16 is fixed to the side of the IGBT module 1. The condensation box 16 is connected to the water pipe 17 coiled and fixed inside the IGBT module 1. A water pump is arranged between the condensation box 16 and the water pipe 17.

[0029] like Figure 4 As shown, it also includes an elastic clamp rod 18, a rubber pad 19 and a valve flap 20. The elastic clamp rod 18 is connected to the right-angle bend of the water pipe 17, and the valve flap 20 is connected to the end of the elastic clamp rod 18. The outside of the valve flap 20 is connected to the rubber pad 19, and the rubber pad 19 can close the water pipe 17. A slidable valve flap 20 is provided to prevent condensed water from flowing back, thereby improving the heat exchange and cooling efficiency.

[0030] like Figure 5 As shown, it also includes a bottom plate 21, which is connected to the bottom of the IGBT module 1 and is provided with uniform rubber protrusions.

[0031] The working principle of the embodiment of the utility model is: the insulating cover 9 is turned to open, Figure 2 For reference, push the lever 7 counterclockwise. Since the slider 3 is slidably connected to the straight groove of the fixed disk 6 and the arc groove 5 of the rotating disk 4 at the same time, the slider 3 will slide centrifugally. At this time, the asbestos ring 2 is in an expanded state, and the reset spring 8 is in a stretched state. The staff inserts the plug wire into the plug port of the IGBT module 1 and stops pushing the lever 7. The lever 7 is reset by the reset spring 8. The slider 3 will also move radially under the action of the clockwise reset of the rotating disk 4, and the asbestos ring 2 will clamp the plug wire, which can not only fix the plug wire, but also block the current dissipated on the surface of the plug wire to prevent current leakage. When the staff needs to check the plug wire, they can push the spring rod 13 inward so that the spring rod 13 contacts the conductive ring 10. At this time, the electronic display screen 15 is in a connected state. The electronic display screen 15 can provide intuitive feedback on whether the conductive ring 10 is energized. A condensation box 16 is provided in the IGBT module 1. The condensation box 16 is filled with condensed water. The condensed water is introduced into the water pipe 17 through a built-in water pump to achieve the effect of heat exchange and cooling, control the internal temperature of the IGBT module 1, and improve its working performance. The IGBT module 1 is fixed by glue, and a plurality of rubber protrusions are provided on the bottom plate 21 to increase the connection area and improve stability.

[0032] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes may be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An IGBT module with an insulation protection structure, characterized in that: The invention comprises an IGBT module (1), an asbestos ring (2), a slider (3), a fixed disk (6) and a rotating assembly. The IGBT module (1) is provided with three wire insertion ports. The fixed disk (6) is provided at the corresponding positions of the wire insertion ports. The fixed disk (6) is provided with a radial straight groove. The slider (3) is slidably connected in the straight groove. The asbestos ring (2) is connected to the centripetal end of the slider (3). The rotating assembly is arranged in the fixed disk (6). The rotating assembly can drive the slider (3) to move radially.

2. An IGBT module with an insulating protection structure according to claim 1, characterized in that: The asbestos ring (2) can form a closed ring.

3. An IGBT module with an insulating protection structure according to claim 2, characterized in that: The rotating assembly is composed of a rotating disk (4) and a toggle part. The interior of the fixed disk (6) is hollow. The rotating disk (4) is rotatably connected in the fixed disk (6). The rotating disk (4) is provided with arc grooves (5) having the same number as the straight grooves. One end of the arc groove (5) is bent counterclockwise toward the center of the circle. The slider (3) slides in the straight groove and the arc groove (5) at the same time.

4. An IGBT module with an insulating protection structure according to claim 3, characterized in that: The shifting part is composed of a shifting rod (7) and a return spring (8). The shifting rod (7) is fixed to the side of the rotating disk (4), and the return spring (8) is connected between the shifting rod (7) and the fixed disk (6).

5. An IGBT module with an insulating protection structure according to claim 4, characterized in that: It also includes an insulating cover (9), which is rotatably connected to the outside of the IGBT module (1) via a hinge, and the insulating cover (9) is made of plastic material and has a side surface with a number of holes and slots equal to that of the fixing plate (6).

6. An IGBT module with an insulating protection structure according to claim 5, characterized in that: It also comprises a conductive ring (10), a conductive rod (11) and a rubber block (12); the conductive ring (10) is arranged in a wire insertion port of an IGBT module (1); the conductive rod (11) is wound around the outside of the conductive ring (10); and the end of the conductive rod (11) is connected to a rubber block (12) fixed in the IGBT module (1).

7. An IGBT module with an insulating protection structure according to claim 6, characterized in that: It also includes a spring rod (13), a wire (14) and an electric display screen (15). The spring rod (13) is slidably connected to the IGBT module (1). The electric display screen (15) is arranged on the side of the IGBT module (1). The spring rod (13) is connected to the electric display screen (15) through the wire (14).

8. An IGBT module with an insulating protection structure according to claim 7, characterized in that: It also includes a condensation box (16) and a water pipe (17), wherein the condensation box (16) is fixed to the side of the IGBT module (1), the condensation box (16) is connected to the water pipe (17) which is coiled and fixed inside the IGBT module (1), and a water pump is provided between the condensation box (16) and the water pipe (17).

9. An IGBT module with an insulating protection structure according to claim 8, characterized in that: It also includes an elastic clamping rod (18), a rubber pad (19) and a valve flap (20), wherein the elastic clamping rod (18) is connected to the right-angle bend of the water pipe (17), the valve flap (20) is connected to the end of the elastic clamping rod (18), and the outside of the valve flap (20) is connected to the rubber pad (19).

10. An IGBT module with an insulating protection structure according to claim 9, characterized in that: It also includes a bottom plate (21), which is connected to the bottom of the IGBT module (1), and is provided with uniform rubber protrusions on the bottom plate (21).

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