IGBT (Insulated Gate Bipolar Translator) module convenient to disassemble and assemble

Abstract

The utility model discloses an IGBT module convenient to disassemble and assemble, which comprises a bottom plate, a shell enclosure and a shell top cover, the shell enclosure covers the outer side of the bottom plate, the shell top cover is arranged at the top of the shell enclosure, two sides of the shell top cover are respectively provided with a limiting fixing clamp, each limiting fixing clamp is composed of an inner clamping plate and an outer clamping plate, and the inner clamping plates are arranged on the outer side of the shell enclosure. The inner clamping plate and the outer clamping plate are arranged in a hinged mode, the inner clamping plate is fixedly connected with the shell top cover, the inner side of the outer clamping plate is fixedly connected with a limiting clamping block, and the two sides of the shell fence are fixedly connected with limiting fixing plates. According to the utility model, the external housing of the IGBT module is divided into the housing enclosure and the housing top cover, the two sides of the housing top cover are provided with the limiting fixing clamps, the two sides of the housing enclosure are provided with the limiting fixing plates, and the housing top cover and the housing enclosure can be rapidly disassembled and assembled through the cooperation of the limiting fixing clamps and the limiting fixing plates. Electronic components in the module can be conveniently exposed, and maintenance personnel can conveniently carry out maintenance.

Description

Technical Field

[0001] This utility model relates to the field of electronic component technology, specifically to an IGBT module that is easy to assemble and disassemble. Background Technology

[0002] IGBT modules are modular semiconductor products packaged by bridging IGBT (Insulated Gate Bipolar Transistor) chips and FWD (Freewheeling Diode) chips through a specific circuit. They feature energy saving, convenient installation and maintenance, and stable heat dissipation. As a mainstream device among new power semiconductor devices, IGBT modules have been widely used in traditional industries such as industry, 4C (communication, computer, consumer electronics, automotive electronics), aerospace, and defense, as well as strategic emerging industries such as rail transportation, new energy, smart grids, and new energy vehicles. Packaged IGBT modules can be directly applied to equipment such as frequency converters and UPS uninterruptible power supplies.

[0003] In some existing IGBT modules, the housing is directly fixed to the base plate during use, making it inconvenient to remove the housing from the insulating base plate. The electronic components inside the module cannot be fully exposed, which makes it difficult to inspect and repair the IGBT module.

[0004] For example, the IGBT module structure disclosed in patent CN208315532U features an insulating substrate cover fixedly connected to the top of an insulating base plate. Four fixing grooves are located on one side of the insulating substrate cover, directly above the insulating base plate. Each of the four fixing grooves has a fixing screw hole at its bottom. Three resin covers are fixedly connected to the top of the insulating substrate cover, and each of the three resin covers has a main terminal fixedly connected to its top. Two resin housing enclosures are slidably connected to the right side of the insulating substrate cover, and each of the two resin housing enclosures has an auxiliary terminal fixedly connected to its top. This design makes the IGBT module structure more convenient to use, improves worker efficiency, and enhances the applicability of the device.

[0005] Although the resin housing enclosure on the right side of the insulating substrate cover can be slid out, the insulating substrate cover is fixedly connected to the top of the insulating base plate. The insulating substrate cover cannot be removed from the insulating base plate, and the electronic components inside the module cannot be fully exposed, making it inconvenient for maintenance operations.

[0006] Therefore, it is necessary to invent an IGBT module that is easy to install and disassemble to solve the above problems. Utility Model Content

[0007] The purpose of this invention is to provide an IGBT module that is easy to install and disassemble, so as to solve the problems in the above-mentioned technology.

[0008] To achieve the above objectives, this utility model provides the following technical solution: an IGBT module that is easy to assemble and disassemble, comprising a base plate, a housing enclosure, and a housing top cover. The housing enclosure covers the top outer side of the base plate, and the housing top cover is disposed on the top of the housing enclosure. Limiting clamps are installed on both sides of the housing top cover. Each limiting clamp consists of an inner clamping plate and an outer clamping plate, which are hinged together. The inner clamping plate is fixedly connected to the housing top cover. A limiting block is fixedly connected to the inner side of the outer clamping plate. Limiting plates are fixedly connected to both sides of the housing enclosure. The limiting plates match the limiting clamps and are clamped between the inner and outer clamping plates. A limiting groove is formed on the surface of the limiting plate, and the limiting block engages with the limiting groove.

[0009] By engaging the limiting block with the limiting slot, the fixing effect between the limiting fixing clip and the limiting fixing plate can be further improved.

[0010] Preferably, a circuit board is fixedly connected to the top of the base plate, and an IGBT chip is mounted on the top of the circuit board.

[0011] The circuit board is supported by a base plate, and the outer casing and top cover of the base plate provide protection for the circuit board.

[0012] Preferably, a main terminal is installed on the surface of the top cover of the housing, and an auxiliary terminal is installed on one side of the top of the bottom plate. Both the main terminal and the auxiliary terminal are electrically connected to the circuit board.

[0013] Both the main terminals and auxiliary terminals are connected to the circuit board via leads.

[0014] Preferably, a positioning stake is fixedly connected to the bottom of one end of the shell top cover, and a positioning plate is fixedly connected to the top of one end of the shell enclosure. The positioning plate has a positioning hole on its surface, and the positioning stake is inserted into the positioning hole.

[0015] By using positioning stakes and positioning plates, the top cover of the shell and one end of the shell enclosure can be positioned and matched.

[0016] Preferably, a convex cover is fixedly connected to the top of the other end of the housing top cover, and the top of the auxiliary terminal is engaged with the convex cover. The convex cover and the housing top cover are integrally injection molded.

[0017] By using the auxiliary terminals and the convex cover, the top cover of the housing and the other end of the housing enclosure can be positioned and matched.

[0018] Preferably, the bottom four corners of the enclosure are fixedly connected with fixed foot plates, and the fixed foot plates and the limiting fixed plates are integrally injection molded with the enclosure.

[0019] The fixed footplates make it easy to secure the housing enclosure with screws.

[0020] Preferably, the housing enclosure, housing top cover, limiting and fixing clamp, limiting and fixing plate, convex cover and fixing foot plate are all made of insulating resin material.

[0021] Using insulating resin can improve the overall safety of the module.

[0022] Preferably, a rubber layer is fixedly connected to the bottom edge of the shell top cover, and the rubber layer abuts against the top edge of the shell enclosure.

[0023] Sealing the gaps between the shell top cover and the shell enclosure with a rubber layer helps to improve the tightness of the connection between the shell top cover and the shell enclosure.

[0024] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0025] By splitting the outer casing of the IGBT module into two parts, the casing enclosure and the casing top cover, and setting limiting and fixing clips on both sides of the casing top cover and limiting and fixing plates on both sides of the casing enclosure, the casing top cover and casing enclosure can be quickly disassembled and assembled through the cooperation of the limiting and fixing clips and limiting and fixing plates, which facilitates the exposure of the electronic components inside the module and makes it easier for maintenance personnel to carry out maintenance. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0027] Figure 2 This is an exploded view of the structure of this utility model;

[0028] Figure 3 This is a cross-sectional view of the structure of this utility model;

[0029] Figure 4 This is a schematic diagram of the structure of the top cover of the housing of this utility model;

[0030] Figure 5 This utility model Figure 3 Enlarged view of part A of the structure.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Base plate; 2. Housing enclosure; 3. Housing top cover; 4. Limiting and fixing clamp; 5. Inner clamping plate; 6. Outer clamping plate; 7. Limiting block; 8. Limiting and fixing plate; 9. Limiting slot; 10. Circuit board; 11. IGBT chip; 12. Main terminal; 13. Auxiliary terminal; 14. Positioning post; 15. Positioning plate; 16. Protruding cover; 17. Fixing foot plate; 18. Rubber layer. Detailed Implementation

[0033] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0034] This utility model provides, for example Figure 1-5 The IGBT module shown includes a base plate 1, a housing enclosure 2, and a housing top cover 3. The housing enclosure 2 covers the top outside of the base plate 1, and the housing top cover 3 is located on top of the housing enclosure 2. Limiting clamps 4 are installed on both sides of the housing top cover 3. The limiting clamps 4 are composed of an inner clamping plate 5 and an outer clamping plate 6. The inner clamping plate 5 and the outer clamping plate 6 are hinged together and fixedly connected to the housing top cover 3. A limiting block 7 is fixedly connected to the inner side of the outer clamping plate 6. Limiting plates 8 are fixedly connected to both sides of the housing enclosure 2. The limiting plates 8 match the limiting clamps 4 and are clamped between the inner clamping plate 5 and the outer clamping plate 6. A limiting groove 9 is formed on the surface of the limiting plate 8, and the limiting block 7 engages with the limiting groove 9.

[0035] In one aspect of this embodiment, a circuit board 10 is fixedly connected to the top of the base plate 1, and an IGBT chip 11 is mounted on the top of the circuit board 10. A main terminal 12 is mounted on the surface of the housing top cover 3, and an auxiliary terminal 13 is mounted on one side of the top of the base plate 1. Both the main terminal 12 and the auxiliary terminal 13 are electrically connected to the circuit board 10. A positioning post 14 is fixedly connected to the bottom of one end of the housing top cover 3, and a positioning plate 15 is fixedly connected to the top of one end of the housing enclosure 2. A positioning hole is opened on the surface of the positioning plate 15, and the positioning post 14 is inserted into the positioning hole. The other end of the housing top cover 3 is fixedly connected to the top of the enclosure 2. The part is fixedly connected with a protruding cover 16, and the top of the auxiliary terminal 13 is engaged with the protruding cover 16. The protruding cover 16 and the top cover 3 of the housing are integrally injection molded. The bottom four corners of the housing enclosure 2 are fixedly connected with fixed foot plates 17. The fixed foot plates 17 and the limiting fixing plates 8 are integrally injection molded with the housing enclosure 2. The housing enclosure 2, the top cover 3, the limiting fixing clamp 4, the limiting fixing plates 8, the protruding cover 16 and the fixed foot plates 17 are all made of insulating resin material. The bottom edge of the top cover 3 is fixedly connected with a rubber layer 18, and the rubber layer 18 abuts against the top edge of the housing enclosure 2.

[0036] Working principle of this utility model:

[0037] Refer to the instruction manual appendix Figure 1-5 When inspecting the IGBT module, first press the limiting and fixing clips 4 on both sides of the top cover 3 of the housing by hand, so that the outer clamp 6 and the inner clamp 5 are separated, and the limiting block 7 is disengaged from the limiting slot 9 of the limiting fixing plate 8. Then, lift the top cover 3 of the housing upwards to separate the top cover 3 of the housing from the housing enclosure 2. At this time, the electronic components inside the module are fully exposed, making it convenient for maintenance personnel to carry out inspection.

[0038] After the IGBT module is repaired, press the limiting and fixing clips 4 on both sides of the housing top cover 3 by hand again to separate the outer clamping plate 6 from the inner clamping plate 5. Then place the housing top cover 3 on top of the housing enclosure 2. Through the cooperation of the auxiliary terminal 13, the protruding cover 16, the limiting post 14, and the positioning plate 15, the limiting and fixing clips 4 and the limiting and fixing plate 8 are matched. Finally, release the limiting and fixing clips 4, and the limiting and fixing plate 8 is clamped between the outer clamping plate 6 and the inner clamping plate 5. At this time, the limiting block 7 engages with the limiting slot 9 of the limiting and fixing plate 8, completing the re-encapsulation of the IGBT module.

Claims

1. An IGBT module that is easy to assemble and disassemble, comprising a base plate (1), a housing enclosure (2), and a housing top cover (3), characterized in that: The shell enclosure (2) covers the top outside of the bottom plate (1). The shell top cover (3) is set on the top of the shell enclosure (2). Limiting clamps (4) are installed on both sides of the shell top cover (3). The limiting clamp (4) is composed of an inner clamping plate (5) and an outer clamping plate (6). The inner clamping plate (5) and the outer clamping plate (6) are hinged together. The inner clamping plate (5) is fixedly connected to the shell top cover (3). A limiting block (7) is fixedly connected to the inner side of the outer clamping plate (6). A limiting plate (8) is fixedly connected to both sides of the shell enclosure (2). The limiting plate (8) matches the limiting clamp (4). The limiting plate (8) is clamped between the inner clamping plate (5) and the outer clamping plate (6). A limiting groove (9) is opened on the surface of the limiting plate (8). The limiting block (7) is engaged with the limiting groove (9).

2. The IGBT module that is easy to install and disassemble according to claim 1, characterized in that: A circuit board (10) is fixedly connected to the top of the base plate (1), and an IGBT chip (11) is mounted on the top of the circuit board (10).

3. The IGBT module that is easy to install and disassemble according to claim 2, characterized in that: The main terminal (12) is installed on the surface of the top cover (3) of the housing, and the auxiliary terminal (13) is installed on one side of the top of the bottom plate (1). Both the main terminal (12) and the auxiliary terminal (13) are electrically connected to the circuit board (10).

4. The IGBT module that is easy to install and disassemble according to claim 1, characterized in that: The bottom of one end of the shell top cover (3) is fixedly connected to a positioning stake (14), and the top of one end of the shell enclosure (2) is fixedly connected to a positioning plate (15). The positioning plate (15) has a positioning hole on its surface, and the positioning stake (14) is inserted into the positioning hole.

5. The IGBT module that is easy to install and disassemble according to claim 3, characterized in that: The top of the other end of the housing top cover (3) is fixedly connected to a convex cover (16), and the top of the auxiliary terminal (13) is engaged with the convex cover (16). The convex cover (16) and the housing top cover (3) are integrally injection molded.

6. The IGBT module that is easy to install and disassemble according to claim 5, characterized in that: The bottom four corners of the shell enclosure (2) are all fixedly connected with fixed foot plates (17), and the fixed foot plates (17) and the limiting fixed plates (8) are integrally injection molded with the shell enclosure (2).

7. The IGBT module that is easy to install and disassemble according to claim 6, characterized in that: The shell enclosure (2), shell top cover (3), limiting and fixing clip (4), limiting and fixing plate (8), convex cover (16) and fixing foot plate (17) are all made of insulating resin material.

8. The IGBT module that is easy to install and disassemble according to claim 1, characterized in that: A rubber layer (18) is fixedly connected to the bottom edge of the top cover (3) of the housing, and the rubber layer (18) abuts against the top edge of the housing enclosure (2).

Images