Plastic package module integrated welding jig

Abstract

The utility model relates to the technical field of welding jigs, in particular to a plastic package module integrated welding jig which comprises a curved surface copper bottom plate positioning frame, a DBC and electrode slice fixing plate and a pin positioning plate. The lower end face of the contact pin positioning plate is fixedly connected with an inverted contact pin plate, the contact pin positioning plate is fixedly connected with a plurality of supporting shaft bodies, the outer walls of the supporting shaft bodies are fixedly connected with a weight fixing plate, and the weight fixing plate is slidably connected with a plurality of contact pin weights in a penetrating mode; the upper end face of the DBC and electrode slice fixing plate is fixedly connected with an AMB, and the upper end face of the AMB is fixedly connected with a plurality of contact pins and a plurality of electrode slices. According to the plastic package module welding jig, the contact pin weight can be used for effectively preventing the contact pin from floating too high, the stability of the contact pin in the welding process is guaranteed, and the automatic heat dissipation function of the welding jig can be achieved, so that the integration degree of the plastic package module welding jig can be improved, and the use and maintenance convenience of the plastic package module welding jig can be improved.

Description

Technical Field

[0001] This utility model relates to the field of welding fixture technology, specifically to a plastic-encapsulated module integrated welding fixture. Background Technology

[0002] Welding fixtures are tooling jigs used to fix and position weldments during welding operations. They can ensure the accuracy and stability of the welding position and help improve welding precision and efficiency. Welding operations for plastic-encapsulated modules are processes specifically for this component. Welding technology is used to connect it to other related components to achieve electrical connection or structural fixation, ensuring that the plastic-encapsulated module can function properly.

[0003] Existing technologies often have the following problems when used:

[0004] To prevent excessive floating of the pins in the molded module welding fixture, additional blocking mechanisms or tools are usually used to limit the pins. Additional heat dissipation mechanisms are also set up to cool the welding fixture, so as to avoid the welding fixture from affecting normal operation due to high temperature during the welding process. However, the above-mentioned additional mechanisms or tools result in a low integration of the molded module welding fixture, which in turn affects the ease of use and maintenance of the molded module welding fixture. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides an integrated welding fixture for plastic-encapsulated modules, which can effectively solve the problems in the existing technology.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model provides an integrated welding fixture for plastic-encapsulated modules, including a curved copper base plate positioning frame, a DBC and electrode sheet fixing plate, and a pin positioning plate;

[0008] An inverted pin plate is fixedly connected to the lower end face of the pin positioning plate. Several support shafts are fixedly connected to the pin positioning plate. A weight fixing plate is fixedly connected to the outer wall of the several support shafts. Several pin weights are slidably connected through the weight fixing plate.

[0009] An AMB is fixedly connected to the upper surface of the DBC and electrode plate fixing plate. Several pins and several electrode plates are fixedly connected to the upper surface of the AMB. A heat dissipation substrate is fixedly connected to the lower surface of the DBC and electrode plate fixing plate.

[0010] Furthermore, the curved copper base plate positioning frame adopts an aluminum plate structure, the DBC and electrode sheet fixing plate adopts a titanium alloy material, and the pin positioning plate, the inverted pin plate and the weight fixing plate are all made of aluminum alloy.

[0011] Furthermore, the pin positioning plate has a positioning through hole, and several pin weights are located directly above the positioning through hole, and the positioning through hole matches the AMB.

[0012] Furthermore, a number of heat dissipation fins are fixedly connected to the lower end face of the heat dissipation substrate.

[0013] Furthermore, each of the supporting shafts is fixedly connected to a plug shaft at its lower end, and the DBC and electrode plate fixing plate and the curved copper base plate positioning frame are provided with a number of plug holes, and the plug shafts are respectively interference-fitted with the plug holes.

[0014] Furthermore, both sides of the upper end face of the DBC and the electrode sheet are fixedly connected with abutment plates.

[0015] The technical solution provided by this utility model has the following advantages compared with the known prior art:

[0016] This invention incorporates several pin weights that slide relative to a weight fixing plate to limit and block the pins. Since the pin weights themselves have a certain weight, they effectively prevent the pins from floating too high, ensuring their stability during the welding process. Furthermore, a heat dissipation substrate is provided, with the heat dissipation substrate on the lower end face of the DBC and electrode plate fixing plate providing self-cooling for the entire welding fixture. Simultaneously, several heat dissipation fins on the lower end face of the heat dissipation substrate effectively enhance its heat dissipation capacity, achieving self-cooling functionality for the welding fixture. This improves the integration of the molding compound module welding fixture and enhances its ease of use and maintenance. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is an exploded three-dimensional view of the present invention.

[0019] Figure 2 This is a schematic diagram of the structure of the DBC, electrode sheet fixing plate, and pin positioning plate in this utility model;

[0020] Figure 3 This is a schematic diagram of the pin positioning plate part of the present invention;

[0021] Reference numerals in the attached diagram: 1. Curved copper base plate positioning frame; 2. DBC and electrode plate fixing plate; 3. Pin positioning plate; 4. Inverted pin plate; 5. Support shaft; 6. Weight fixing plate; 7. Pin weight; 8. AMB; 9. Pin; 10. Electrode plate; 11. Heat sink base plate; 12. Positioning through hole; 13. Heat sink fins; 14. Insertion shaft; 15. Insertion hole; 16. Abutment plate. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0023] The present invention will be further described below with reference to the embodiments.

[0024] Example: Refer to Figures 1 to 3 A molding compound module integrated welding fixture includes a curved copper base plate positioning frame 1, a DBC and electrode sheet fixing plate 2, and a pin positioning plate 3. The curved copper base plate positioning frame 1 is made of aluminum plate structure. An inverted pin plate 4 is fixedly connected to the lower end face of the pin positioning plate 3. The DBC and electrode sheet fixing plate 2 is made of titanium alloy. The pin positioning plate 3 and the inverted pin plate 4 are both made of aluminum alloy. Several support shafts 5 are fixedly connected to the pin positioning plate 3. The lower end of each of the several support shafts 5 is fixedly connected to a plug shaft 14. Several plug holes 15 are opened on the DBC and electrode sheet fixing plate 2 and the curved copper base plate positioning frame 1. The several plug shafts 14 are respectively interference-fitted with the several plug holes 15. Abutment plates 16 are fixedly connected to both sides of the upper end face of the DBC and electrode sheet 10.

[0025] Several support shafts 5 are fixedly connected to a weight fixing plate 6. The weight fixing plate 6 is made of aluminum alloy. Several pin weights 7 are slidably connected through the weight fixing plate 6. The pin positioning plate 3 is provided with a positioning through hole 12. Several pin weights 7 are located directly above the positioning through hole 12, and the positioning through hole 12 matches AMB8.

[0026] Several pin weights 7 that can slide relative to the weight fixing plate 6 are used to limit and block the pin 9. Since the pin weights 7 have a certain weight, they can effectively prevent the pin 9 from floating too high and ensure the stability of the pin 9 during the welding process.

[0027] Reference Figure 1 and Figure 2AMB8 is fixedly connected to the upper end face of the DBC and electrode plate fixing plate 2. Several pins 9 and several electrode plates 10 are fixedly connected to the upper end face of the AMB8. A heat dissipation substrate 11 is fixedly connected to the lower end face of the DBC and electrode plate fixing plate 2. Several heat dissipation fins 13 are fixedly connected to the lower end face of the heat dissipation substrate 11.

[0028] The welding fixture is cooled by its own heat dissipation substrate 11 on the lower end face of the DBC and electrode plate fixing plate 2. At the same time, the heat dissipation fins 13 on the lower end face of the heat dissipation substrate 11 can effectively improve the heat dissipation capacity of the heat dissipation substrate 11, realizing the self-heat dissipation function of the welding fixture. This can improve the integration of the plastic encapsulation module welding fixture and help improve the ease of use and maintenance of the plastic encapsulation module welding fixture.

[0029] The working principle of this utility model is as follows:

[0030] Several pin weights 7 that can slide relative to the weight fixing plate 6 are used to limit and block the pin 9. Since the pin weights 7 have a certain weight, they can effectively prevent the pin 9 from floating too high and ensure the stability of the pin 9 during the welding process.

[0031] The welding fixture is cooled by its own heat dissipation substrate 11 on the lower end face of the DBC and electrode plate fixing plate 2. At the same time, the heat dissipation fins 13 on the lower end face of the heat dissipation substrate 11 can effectively improve the heat dissipation capacity of the heat dissipation substrate 11, realizing the self-heat dissipation function of the welding fixture. This can improve the integration of the plastic encapsulation module welding fixture and help improve the ease of use and maintenance of the plastic encapsulation module welding fixture.

[0032] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A plastic-encapsulated module integrated welding fixture, characterized in that, include: Curved copper base plate positioning frame (1), DBC and electrode sheet fixing plate (2) and pin positioning plate (3); The lower end face of the pin positioning plate (3) is fixedly connected to an inverted pin plate (4), and a number of support shafts (5) are fixedly connected to the pin positioning plate (3). A weight fixing plate (6) is fixedly connected to the outer wall of the support shafts (5), and a number of pin weights (7) are slidably connected through the weight fixing plate (6). The upper end face of the DBC and electrode plate fixing plate (2) is fixedly connected to an AMB (8), the upper end face of the AMB (8) is fixedly connected to a number of pins (9) and a number of electrode plates (10), and the lower end face of the DBC and electrode plate fixing plate (2) is fixedly connected to a heat dissipation substrate (11).

2. The integrated welding fixture for plastic-encapsulated modules according to claim 1, characterized in that, The curved copper base plate positioning frame (1) is made of aluminum plate, the DBC and electrode plate fixing plate (2) is made of titanium alloy, and the pin positioning plate (3), the inverted pin plate (4) and the weight fixing plate (6) are all made of aluminum alloy.

3. The integrated welding fixture for plastic-encapsulated modules according to claim 1, characterized in that, The pin positioning plate (3) has a positioning through hole (12), and several pin weights (7) are located directly above the positioning through hole (12), and the positioning through hole (12) matches the AMB (8).

4. The integrated welding fixture for plastic-encapsulated modules according to claim 1, characterized in that, A number of heat dissipation fins (13) are fixedly connected to the lower end face of the heat dissipation substrate (11).

5. The integrated welding fixture for a plastic-encapsulated module according to claim 1, characterized in that, Each of the supporting shafts (5) has a fixed connection to a plug shaft (14) at its lower end. The DBC and electrode plate fixing plate (2) and the curved copper base plate positioning frame (1) are provided with several plug holes (15). Each of the plug shafts (14) is press-fitted with several plug holes (15).

6. The integrated welding fixture for plastic-encapsulated modules according to claim 1, characterized in that, Both sides of the upper end face of the DBC and electrode sheet (10) are fixedly connected to abutment plates (16).

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