IGBT module

By designing a detachable IGBT module, the inconvenience and prone to failure of mechanical contactors in the mine car brake system is solved, and the simple and reliable brake system control is achieved.

CN222933882UActive Publication Date: 2025-06-03BEIJING MCC HUABO MINING MACHINERY POWER EQUIPMENT CO LTD
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Patent Information

Application Number
CN202422087865.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-08-27
Publication Date
2025-06-03
Estimated Expiration
2034-08-27

AI Technical Summary

Technical Problem

The existing mine car brake system uses mechanical contactors to cause problems such as long procurement cycle, expensive price, prone to electrical failures, and short service life.

Method used

An IGBT module is designed, including a detachable substrate, an IGBT assembly, a heat dissipation shell, an electrical installation box and a composite busbar, which is connected to the installation end of the mine car brake system through the first and second mounting parts to achieve simplicity and reliability of replacement and installation.

Benefits of technology

This IGBT module can directly replace mechanical contactors, avoid failures such as arcing and burning, and improve the practicality and working efficiency of the equipment.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of IGBT (Insulated Gate Bipolar Translator) modules, in particular to an IGBT module. The problem that a mechanical contactor adopted by a mine car brake system in the prior art is inconvenient to use is solved, and the practicability of equipment is improved. The structure comprises a substrate, the substrate is detachably connected with an IGBT assembly, the two sides of the substrate are detachably connected with a first installation part and a second installation part respectively, the first installation part is fixedly provided with a first installation plate, the second installation part is fixedly provided with a second installation plate, and the first installation plate and the second installation plate are located on the same horizontal plane. The perpendicular bisector of the first mounting plate is perpendicular to the perpendicular bisector of the substrate. According to the embodiment, the IGBT module is adopted to control the mine car braking system instead of a mechanical contactor in the prior art to control the mine car braking system, installation is simpler and more reliable, faults such as arc discharge and contact burning caused by the mechanical contactor under the condition that large current is frequently switched on and switched off are avoided, and the mine car braking system has high practicability.
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Description

Technical Field

[0001] The utility model relates to the technical field of IGBT modules, and specifically, to an IGBT module. Background Art

[0002] The existing braking system of 220 - 290 ton mine cars is often realized by mechanical contactor control. Its working principle is: step on the electric braking pedal → the braking contactors RP1 and RP2 are attracted → the electric braking circuit is turned on, the resistance grid and the cooling fan work, and the vehicle is braked to a stop.

[0003] This kind of mechanical contactor has the following problems: 1. Most of the contactors and their components are produced abroad, with a long procurement cycle and high prices; 2. The contacts of the mechanical contactor often show phenomena such as arcing, adhesion, and burning during closing and breaking, resulting in frequent electrical failures of the vehicle; 3. The service life of the mechanical contactor is short, and frequent replacement and inspection are likely to affect work efficiency. Summary of the Utility Model

[0004] The utility model provides an IGBT module, which solves the problem of inconvenient use of the mechanical contactor in the existing mine car braking system and improves the practicability of the equipment.

[0005] The technical solution of the utility model is as follows:

[0006] An IGBT module includes a substrate,

[0007] An IGBT component is detachably connected to the substrate. A first mounting member and a second mounting member are respectively detachably connected to both sides of the substrate. A first mounting plate is fixed on the first mounting member, and a second mounting plate is fixed on the second mounting member. The first mounting plate and the second mounting plate are in the same horizontal plane. The perpendicular bisector of the first mounting plate is perpendicular to the perpendicular bisector of the substrate. A number of first mounting holes are provided on the first mounting plate, and a number of second mounting holes are provided on the second mounting plate. The length of the first mounting hole along the perpendicular bisector direction of the substrate is greater than the width of the first mounting hole. The length of the second mounting hole along the perpendicular bisector direction of the substrate is greater than the width of the second mounting hole.

[0008] Further, the first mounting member includes a connecting plate and a supporting plate provided at the lower end of the connecting plate. The connecting plate is connected and fixed to the substrate by bolts. The supporting plate is perpendicular to both the connecting plate and the first mounting plate at the same time. The distance between the supporting plate and the connecting plate on the side close to the first mounting plate is greater than the distance between the supporting plate and the connecting plate on the side far from the first mounting plate. The supporting plate, the connecting plate, and the first mounting plate are formed by welding. The second mounting member has the same structure as the first mounting member.

[0009] Further, a heat dissipation housing is fixedly connected to one side of the substrate by means of threaded connection. A plurality of heat dissipation fins are arranged inside the heat dissipation housing, and each heat dissipation fin is fixedly connected to the substrate. An air outlet is arranged on the side wall of the heat dissipation housing, and an air inlet is arranged on the side of the heat dissipation housing away from the substrate. A fan is fixedly installed on the air inlet.

[0010] Further, the cross-section of each heat dissipation fin is an isosceles trapezoid structure, a gap is arranged between each heat dissipation fin, and a heat dissipation groove is arranged inside the heat dissipation fin.

[0011] Further, an electrical appliance installation box is also fixedly connected to one side of the substrate by means of threaded connection. An installation opening is arranged on the side wall of the electrical appliance installation box, and a control core is arranged inside the electrical appliance installation box. The control core is fixedly connected to the installation opening by means of bolts.

[0012] Further, the IGBT component module includes an IGBT main board and a drive board. The IGBT main board and the drive board are fixedly arranged on the other side of the substrate by means of threaded connection. A composite busbar is fixedly arranged on the other side of the substrate, and the drive board and the IGBT main board are arranged between the substrate and the composite busbar.

[0013] Further, a positioning card slot is arranged on the side of the substrate close to the first mounting plate, and the cross-section of the positioning card slot is a rectangular structure.

[0014] The working principle and beneficial effects of the present utility model are as follows:

[0015] The installation process of this embodiment: First, align and snap the positioning card slot on the substrate, the first mounting plate, and the second mounting plate with the installation end of the mine car braking system to be installed, and then fixedly connect the substrate and the installation end of the mine car braking system by means of bolts through the first mounting holes and the second mounting holes.

[0016] In this embodiment, the first mounting plate and the second mounting plate are arranged on the substrate, and the substrate and the mine car braking system are fixedly installed through a plurality of first mounting holes and second mounting holes. Since the length of the first mounting hole is greater than its width, this embodiment can be applied to more mine car braking systems with different distances between installation threaded holes. This embodiment uses an IGBT module to control the mine car braking system, replacing the design of using a mechanical contactor to control the mine car braking system in the prior art. This embodiment can directly replace and install the existing mechanical contactor-controlled mine car braking system, and the installation is more concise and reliable. It avoids faults such as arcing and burning of contacts when the mechanical contactor is frequently turned on and off under large current. This embodiment has strong practicability. Description of the Drawings

[0017] The present utility model will be further described in detail below in conjunction with the drawings and specific embodiments.

[0018] Figure 1Schematic diagram of the overall structure of this embodiment Figure 1 ;

[0019] Figure 2 Schematic diagram of the overall structure of this embodiment Figure 2 ;

[0020] Figure 3 Explosion diagram of this embodiment Figure 1 ;

[0021] Figure 4 Explosion diagram of this embodiment Figure 2 ;

[0022] Figure 5 Schematic diagram of the internal structure of the heat sink of this embodiment.

[0023] In the figure:

[0024] 1. Substrate; 11. Positioning card slot; 21. Connecting plate; 211. First mounting member; 212. First mounting hole; 213. Support plate; 214. First mounting plate; 22. Second mounting member; 221. Second mounting plate; 222. Second mounting hole; 3. Heat dissipation housing; 31. Air outlet; 32. Air inlet; 4. Heat sink; 41. Heat dissipation groove; 5. Electrical installation box; 51. Installation opening; 52. Control core; 6. Composite busbar; 61. Drive board; 62. IGBT main board. Detailed implementation manners

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present invention.

[0026] Such as Figures 1 to 5As shown in the figure, this embodiment proposes an IGBT module, the structure of which includes a substrate 1. An IGBT component is detachably connected to the substrate 1 in this embodiment. A first mounting member 211 and a second mounting member 22 are respectively detachably connected to both sides of the substrate 1. A first mounting plate 214 is fixed on the first mounting member 211, and a second mounting plate 221 is fixed on the second mounting member 22. The first mounting plate 214 and the second mounting plate 221 are in the same horizontal plane. The perpendicular bisector of the first mounting plate 214 is perpendicular to the perpendicular bisector of the substrate 1. A number of first mounting holes 212 are provided on the first mounting plate 214, and a number of second mounting holes 222 are provided on the second mounting plate 221. The length of the first mounting hole 212 along the perpendicular bisector direction of the substrate 1 is greater than the width of the first mounting hole 212, and the length of the second mounting hole 222 along the perpendicular bisector direction of the substrate 1 is greater than the width of the second mounting hole 222. Since the existing mine car braking systems generally adopt the existing mechanical contactors for control. Therefore, the distances between them and the threaded holes connected by threads of the mechanical contactors are inconsistent. The design with the length of the first mounting hole 212 greater than the width ensures that the installation of the substrate 1 in this embodiment can be applicable to more existing braking systems, facilitating the replacement of the mechanical contactor of the braking system with the IGBT module.

[0027] The first mounting member 211 in this embodiment includes a connecting plate 21 and a supporting plate 213 provided at the lower end of the connecting plate 21, which is used to enhance the structural stability of the first mounting member 211 and make the first mounting member 211 more firm and reliable. The connecting plate 21 is connected and fixed to the substrate 1 by bolts. The supporting plate 213 is perpendicular to both the connecting plate 21 and the first mounting plate 214 at the same time. The distance between the supporting plate 213 and the connecting plate 21 on the side close to the first mounting plate 214 is greater than the distance between the supporting plate 213 and the connecting plate 21 on the side far from the first mounting plate 214, which is used to save the material of the supporting plate 213 and reduce the manufacturing cost of the supporting plate 213. The supporting plate 213, the connecting plate 21 and the first mounting plate 214 are welded into a whole. The second mounting member 22 has the same structure as the first mounting member 211. Such a design ensures that the structures of the first mounting member 211 and the second mounting member 22 are more stable and can bear stronger pressure.

[0028] On one side of the substrate 1 in this embodiment, a heat dissipation housing 3 is fixedly connected by threads to facilitate the disassembly of the heat dissipation housing 3. When the heat dissipation fins 4 in the heat dissipation housing 3 accumulate dust, the heat dissipation fins 4 can be cleaned by quickly disassembling the heat dissipation housing 3. A number of heat dissipation fins 4 are provided in the heat dissipation housing 3 to increase the heat dissipation area and improve the heat dissipation efficiency. Each heat dissipation fin 4 is fixedly connected to the substrate 1. An air outlet 31 is provided on the side wall of the heat dissipation housing 3, and an air inlet 32 is provided on the side of the heat dissipation housing 3 away from the substrate 1. A fan is fixed on the air inlet 32. In this embodiment, a fan is provided at the air inlet 32 of the heat dissipation housing 3, which can effectively prevent the influence of the heat generated by the rotation of the fan itself on the substrate 1. In this embodiment, by providing an air inlet 32 and an air outlet 31 on the heat dissipation housing 3, an air flow is formed in the heat dissipation housing 3 by the fan, and the heat generated by the operation of the substrate 1 is continuously carried away.

[0029] In this embodiment, the cross-section of each heat dissipation fin 4 is an isosceles trapezoid structure to increase the supporting force on both sides of the heat dissipation fin 4 and prevent the heat dissipation fin 4 from bending and breaking. There is a gap between each heat dissipation fin 4, and a heat dissipation groove 41 is provided in the heat dissipation fin 4. Such a design further increases the contact area between the substrate 1 and the flowing air generated by the fan, and improves the heat dissipation efficiency.

[0030] On one side of the substrate 1 in this embodiment, an electrical installation box 5 is also fixedly connected by threads to facilitate the replacement and installation of the electrical installation box 5. An installation opening 51 is provided on the side wall of the electrical installation box 5, and a control core 52 is provided in the electrical installation box 5. The control core 52 is fixedly connected to the installation opening 51 by bolts to facilitate the disassembly, maintenance and replacement of the control core 52.

[0031] The IGBT component module in this embodiment includes an IGBT main board 62 and a drive board 61. The IGBT main board 62 and the drive board 61 are fixedly arranged on the other side of the substrate 1 by threaded connection to facilitate the disassembly and replacement of the IGBT main board 62 and the drive board 61. A composite busbar 6 is fixed on the other side of the substrate 1, and the drive board 61 and the IGBT main board 62 are arranged between the substrate 1 and the composite busbar 6. Such a design is to facilitate the connection between the composite busbar 6, the IGBT main board 62 and the drive board 61.

[0032] On the side of the substrate 1 in this embodiment close to the first mounting plate 214, a positioning card slot 11 is provided, and the cross-section of the positioning card slot 11 is a rectangular structure. Such a design enables the substrate 1 to have an accurate preset position when installed in the mine car braking system, helping the substrate 1 to be installed more quickly.

[0033] The installation process of this embodiment: First, align and snap the positioning card slot 11, the first mounting plate 214 and the second mounting plate 221 on the substrate 1 with the installation end of the mine car braking system to be installed, and then fixedly connect the substrate 1 and the installation end of the mine car braking system by bolts through the first mounting hole 212 and the second mounting hole 222.

[0034] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An IGBT module, comprising a substrate (1), characterized in that: An IGBT assembly is detachably connected to the substrate (1); a first mounting member (211) and a second mounting member (22) are detachably connected to both sides of the substrate (1); a first mounting plate (214) is fixed to the first mounting member (211); a second mounting plate (221) is fixed to the second mounting member (22); the first mounting plate (214) and the second mounting plate (221) are located in the same horizontal plane; a mid-perpendicular line of the first mounting plate (214) is perpendicular to a mid-perpendicular line of the substrate (1); a plurality of first mounting holes (212) are provided on the first mounting plate (214); a plurality of second mounting holes (222) are provided on the second mounting plate (221); a length of the first mounting hole (212) along the mid-perpendicular line of the substrate (1) is greater than a width of the first mounting hole (212); and a length of the second mounting hole (222) along the mid-perpendicular line of the substrate (1) is greater than a width of the second mounting hole (222).

2. An IGBT module according to claim 1, characterized in that: The first mounting member (211) comprises a connecting plate (21) and a supporting plate (213) arranged at the lower end of the connecting plate (21); the connecting plate (21) is connected and fixed to the base plate (1) by bolts; the supporting plate (213) is perpendicular to the connecting plate (21) and the first mounting plate (214); the distance between the supporting plate (213) close to the first mounting plate (214) and the connecting plate (21) is greater than the distance between the supporting plate (213) far from the first mounting plate (214) and the connecting plate (21); the supporting plate (213), the connecting plate (21) and the first mounting plate (214) are formed by welding; and the second mounting member (22) has the same structure as the first mounting member (211).

3. An IGBT module according to claim 1, characterized in that: A heat dissipation shell (3) is fixed to one side of the substrate (1) by means of a threaded connection, a plurality of heat dissipation fins (4) are arranged inside the heat dissipation shell (3), each of the heat dissipation fins (4) is fixedly connected to the substrate (1), an air outlet (31) is arranged on a side wall of the heat dissipation shell (3), an air inlet (32) is arranged on a side of the heat dissipation shell (3) away from the substrate (1), and a fan is fixed on the air inlet (32).

4. An IGBT module according to claim 3, characterized in that: The cross section of each heat sink (4) is an isosceles trapezoidal structure, gaps are provided between each heat sink (4), and heat sinks (41) are provided inside each heat sink (4).

5. The IGBT module according to claim 3, characterized in that: An electrical appliance installation box (5) is also fixed to one side of the base plate (1) via a threaded connection, a side wall of the electrical appliance installation box (5) is provided with an installation opening (51), a control core (52) is provided inside the electrical appliance installation box (5), and the control core (52) is fixed to the installation opening (51) via a bolt connection.

6. The IGBT module according to claim 1, characterized in that: The IGBT component module comprises an IGBT main board (62) and a drive board (61); the IGBT main board (62) and the drive board (61) are fixedly arranged on the other side of a base plate (1) by means of a threaded connection; a composite busbar (6) is fixed to the other side of the base plate (1); and the drive board (61) and the IGBT main board (62) are arranged between the base plate (1) and the composite busbar (6).

7. The IGBT module according to claim 1, characterized in that: The base plate (1) is provided with a positioning slot (11) on the side close to the first mounting plate (214), and the cross section of the positioning slot (11) is a rectangular structure.