IGBT (Insulated Gate Bipolar Translator) module and welding jig thereof

Abstract

The utility model discloses an IGBT (Insulated Gate Bipolar Translator) module, which comprises radiating fins, a plurality of IGBT main bodies are uniformly arranged on the radiating fins, protective tubes are sleeved on the outer sides of pins of the IGBT main bodies, an insulating plate is arranged above the radiating fins, and the top ends of the pins of the IGBT main bodies penetrate through the insulating plate; the structure is simple, the installation is convenient, and the functions of uniformly compressing the silicone tube and sealing the IGBT pin are perfectly realized; and the device considers the product universality, reduces the cost of the jig, is easier to manage, is elaborately arranged and designed on the premise of ensuring the excellent functions of the device, has the excellent performances of structural novelty, usability, reliability, universality and the like, and is a safe, reliable, novel and practical novel device.

Description

Technical Field

[0001] The utility model relates to the technical field of IGBT modules, in particular to an IGBT module and a welding fixture thereof. Background Art

[0002] At present, the pin sealing of IGBT modules in the industry has always been a difficult problem. Currently, most of them are not sealed, which leads to the accumulation of dust at the pins after the IGBT is used for too long, eventually causing a short circuit and explosion. With the development of the industry, the protection level of IGBT needs to be higher and more reliable.

[0003] In order to solve the short circuit problem between the pins of the IGBT module caused by dust accumulation, the second is to improve the protection level of the entire module and reduce the impact of the harsh environment of the air duct and the conductive dust brought by the air duct on the IGBT.

[0004] To this end, an IGBT module and a welding fixture thereof are proposed. Summary of the invention

[0005] The purpose of the utility model is to provide an IGBT module and a welding jig thereof to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an IGBT module, including a heat sink, on which a plurality of IGBT bodies are evenly mounted, a protective tube is provided on the outer side of the pins of the IGBT body, an insulating plate is provided above the heat sink, and the top of the pins of the IGBT body passes through the insulating plate.

[0007] Preferably, the height of the protection tube is greater than the distance between the IGBT body and the insulating plate.

[0008] Preferably, the protective tube is made of silicone.

[0009] A welding jig using any one of the above-mentioned IGBT modules comprises a base plate, the upper surface of which is respectively mounted with a left side plate, a right side plate and a rear side plate, and the tops of the left side plate, the right side plate and the rear side plate are mounted with a positioning plate for positioning the IGBT module.

[0010] Preferably, a bottom support plate for supporting the IGBT module is installed on the inner sides of the left side plate, the right side plate and the rear side plate.

[0011] Preferably, a pressing plate is provided above the positioning plate, and cushion blocks are symmetrically installed on both sides of the upper surface of the pressing plate.

[0012] Preferably: the left side plate and the right side plate are both provided with clamping buckles, and the clamping buckles are clamped with the cushion block.

[0013] Preferably, positioning pins are symmetrically mounted on the upper surface of the clamping plate.

[0014] Compared with the prior art, the utility model has the following beneficial effects: simple structure, easy installation, and perfect realization of the function of uniformly compressing the silicone tube and sealing the IGBT pins; the device takes into account the versatility of the products, reduces the cost of the fixture itself, and is easier to manage. It is carefully designed and laid out while ensuring its superior functional effects, and has superior performance such as structural novelty, usability, reliability, and versatility. It is a safe, reliable, novel, and practical new device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the IGBT module of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the welding fixture of the utility model;

[0017] Figure 3 It is a rear view stereoscopic structural schematic diagram of the welding fixture of the present invention.

[0018] In the figure: 1. bottom plate; 2. clamping buckle; 3. left side plate; 4. positioning plate; 5. clamping plate; 6. pad; 7. positioning pin; 8. right side plate; 9. IGBT module; 10. bottom support plate; 11. rear side plate; 12. IGBT body; 13. protective tube; 14. insulation plate; 15. heat sink. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Example

[0020] See also Figure 1-3 The utility model provides a technical solution: an IGBT module, including a heat dissipation fin 15, on which a plurality of IGBT bodies 12 are evenly mounted, a protective tube 13 is sleeved on the outer side of the pins of the IGBT body 12, an insulating plate 14 is arranged above the heat dissipation fin 15, and the top of the pins of the IGBT body 12 penetrates the insulating plate 14; through the above arrangement, a plurality of IGBT bodies 12 are evenly mounted on the heat dissipation fin 15, so that the heat dissipation work of the IGBT body 12 can be performed more efficiently and quickly, and at the same time, the pins of the IGBT body 12 are protected by the protective tube 13, which can effectively solve the short circuit problem caused by dust accumulation between the pins.

[0021] like Figure 1 As shown: the height of the protection tube 13 is greater than the distance between the IGBT body 12 and the insulating plate 14; through the above arrangement, a sealing effect can be achieved when the protection tube is compressed.

[0022] like Figure 1 As shown: the material of the protective tube 13 is silicone; through the above arrangement, compression work is convenient.

[0023] A welding jig using any one of the above-mentioned IGBT modules comprises a base plate 1, the upper surface of which is respectively mounted with a left side plate 3, a right side plate 8 and a rear side plate 11, and the tops of the left side plate 3, the right side plate 8 and the rear side plate 11 are mounted with a positioning plate 4 for positioning the IGBT module 9; through the above arrangement, the outer side of the IGBT module 9 is limited and protected, and at the same time, the positioning plate 4 facilitates the placement of the IGBT module 9 into the jig.

[0024] like Figure 2 and Figure 3 As shown: a bottom support plate 10 for supporting the IGBT module 9 is installed on the inner side of the left side plate 3, the right side plate 8 and the rear side plate 11; through the above arrangement, the bottom of the IGBT module 9 is supported, and different heights can be adjusted between the left side plate 3, the right side plate 8 and the rear side plate 11 according to different products.

[0025] like Figure 2 As shown: a clamping plate 5 is provided above the positioning plate 4, and pads 6 are symmetrically installed on both sides of the upper surface of the clamping plate 5; through the above arrangement, the clamping plate 5 and the pads 6 are made into two separate parts, which reduces the overall thickness, reduces the processing difficulty, and saves material costs. The clamping plate 5 can also be made into different shapes according to different products. The pads 6 can evenly apply the clamping force of the clamping buckle 2 to the clamping plate 5 to prevent the clamping plate 5 from warping in the middle.

[0026] like Figure 2 As shown: the left side plate 3 and the right side plate 8 are both equipped with clamping buckles 2, which are clamped with the cushion block 6; through the above arrangement, the position of the clamping plate 5 can be restricted and fixed.

[0027] like Figure 2 and Figure 3 As shown: the upper surface of the pressing plate 5 is symmetrically mounted with positioning pins 7.

[0028] Working principle: First, put the protective tube 13 on the pin of the IGBT body 12, and then install the insulating plate 14. Then, install and fix the positions of the left plate 3, the right plate 8, the rear plate 11 and the positioning plate 4. Then, adjust the bottom support to the appropriate position according to the size of the IGBT module 9, and place the IGBT module 9 into the fixture.

[0029] Place the clamping plate 5 on the positioning plate 4, and then install the cushion block 6 on top of it. The clamping and positioning work of the clamping plate 5 is completed through the cooperation of the clamping buckle 2 and the cushion block 6. After the overall installation work is completed, welding work can be carried out.

[0030] The device also has reserved mounting holes for installation on the welding machine table, which can be used for robot welding, which is conducive to automated production and cost savings.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An IGBT module, comprising a heat sink (15), characterized in that: A plurality of IGBT bodies (12) are evenly mounted on the heat dissipation fins (15); a protective tube (13) is sleeved on the outside of the pins of the IGBT bodies (12); an insulating plate (14) is provided above the heat dissipation fins (15); and the top ends of the pins of the IGBT bodies (12) penetrate the insulating plate (14).

2. An IGBT module according to claim 1, characterized in that: The height of the protection tube (13) is greater than the distance between the IGBT body (12) and the insulating plate (14).

3. An IGBT module according to claim 1, characterized in that: The material of the protection tube (13) is silica gel.

4. A welding jig for an IGBT module according to any one of claims 1 to 3, comprising a base plate (1), characterized in that: A left side plate (3), a right side plate (8) and a rear side plate (11) are respectively mounted on the upper surface of the bottom plate (1), and a positioning plate (4) for positioning the IGBT module is mounted on the top of the left side plate (3), the right side plate (8) and the rear side plate (11).

5. The welding jig for an IGBT module according to claim 4, characterized in that: A bottom support plate (10) for supporting the IGBT module is installed on the inner sides of the left side plate (3), the right side plate (8) and the rear side plate (11).

6. The welding jig for an IGBT module according to claim 4, characterized in that: A clamping plate (5) is provided above the positioning plate (4), and cushion blocks (6) are symmetrically mounted on both sides of the upper surface of the clamping plate (5).

7. The welding jig for an IGBT module according to claim 6, characterized in that: The left side plate (3) and the right side plate (8) are both provided with clamping buckles (2), and the clamping buckles (2) are clamped to the cushion block (6).

8. The welding jig for an IGBT module according to claim 6, characterized in that: Positioning pins (7) are symmetrically mounted on the upper surface of the clamping plate (5).

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