Welding tool for brick type power module
By designing brick-type power supply module welding tooling, using the combination of a rectangular structure and multiple grooved threaded holes, the problems of low welding efficiency and height inconsistency between the power supply module and the printed board are solved, and rapid and accurate positioning and high consistency are achieved, production efficiency is improved and the risk of damage of reinforcement frames is reduced.
Patent Information
- Application Number
- CN202422004027.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-19
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2034-08-19
AI Technical Summary
In board-type power supply products, the welding efficiency of brick power modules and printed boards is low and highly inconsistent, resulting in poor contact between the power module and the reinforcement frame.
A welding tool for brick power supply module is designed, adopting a rectangular structure, hollowing out the inside to form a box body, and multiple grooves and threaded holes are set on the bottom surface to position the power supply module and printed board to ensure that the pins of the power supply module are accurately inserted into the pad and control the high consistency through the top end surface.
It realizes rapid and accurate positioning and high consistency of the power module, improves welding efficiency, avoids the risk of damage to the reinforcement frame, optimizes the production process, and shortens the production cycle.
Smart Images
Figure CN223185859U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of assembly, and particularly relates to a welding tool for a brick-shaped power module. Background Art
[0002] In power products of board cards, brick-shaped power modules are often used, as shown in Figure 1 . After the power module is welded to the printed circuit board, it is then installed in the reinforcement frame. Since the power module generates a large amount of heat, heat-conducting grease is often applied to the contact surface between the power module and the reinforcement frame to eliminate the air thermal resistance and thus accelerate heat dissipation. This requires that after the power board with the welded power module is installed on the reinforcement frame, the power module and the reinforcement frame are in good contact. However, due to the tolerance in the height of each power module, if the power modules are all welded to the root of the pins, when the printed circuit board is installed in the reinforcement frame, some power modules may not contact the reinforcement frame. To avoid the above problems, in the production process, it is necessary to use the reinforcement frame as a tool to ensure the welding height of the power module, but the efficiency of placing the power module is very low. If there is a slight misalignment, the printed circuit board needs to be picked up, the position of the power module needs to be readjusted, and then the printed circuit board is dropped into the reinforcement frame until all the pins of the power modules can pass through the corresponding pads on the printed circuit board smoothly. Summary of the Utility Model
[0003] (1) Technical Problems to be Solved
[0004] The technical problem to be solved by the utility model is how to provide a welding tool for a brick-shaped power module to solve the assembly problem of the power module and the printed circuit board.
[0005] (2) Technical Solutions
[0006] To solve the above technical problems, the utility model proposes a welding tool for a brick-shaped power module. The tool is a cuboid, with its interior hollowed out to form a box body. The hollowing depth is 11.9 mm, and on the bottom surface of the hollowed space, there are left, middle, and right grooves with a depth of 1 mm. Among them, the left groove is L-shaped, with an overall length of 59 mm and a width of 116.5 mm; the middle groove is rectangular, with an overall length of 59 mm and a width of 113.5 mm; the right groove is rectangular, with an overall length of 51.8 mm and a width of 26.3 mm. There are 2 threaded holes on the upper part of the tool, 1 threaded hole on the left part, 2 threaded holes on the lower part, 1 threaded hole on the right part, and 1 threaded hole in the middle part.
[0007] (3) Beneficial Effects
[0008] The present utility model proposes a welding tooling for a brick-shaped power module. This tooling of the present utility model can quickly and accurately position the power module at one time, while ensuring the high consistency of subsequent welding and improving the welding efficiency of the brick-shaped power module. Brief Description of the Drawings
[0009] Figure 1 It is a schematic diagram of the power supply structure in the prior art; (a) is the front view, (b) is the bottom view, and (c) is the A-A stepped cross-sectional view;
[0010] Figure 2 It is a schematic diagram of the structure of the welding tooling of the present utility model; (a) is the front view, and (b) is the B-B cross-sectional view. Detailed Embodiment
[0011] To make the purpose, content and advantages of the present utility model clearer, the following combines the drawings and embodiments to further describe the detailed embodiment of the present utility model in detail.
[0012] The present utility model proposes a welding tooling for a brick-shaped power module to improve the welding efficiency and consistency of the brick-shaped power module. As Figure 2 shown, this tooling is a cuboid, with an internal hollowing to form a box body. The hollowing depth is 11.9 mm, and on the bottom surface of the hollowed space, there are left grooves, middle grooves and right grooves with a depth of 1 mm; among them, the left groove is L-shaped, the overall length of the left groove is 59 mm, and the width is 116.5 mm (corresponding to the length and width directions of the overall tooling. All lengths in this article refer to the left and right directions of the screen, and all widths refer to the up and down directions of the screen); the middle groove is rectangular, the overall length of the middle groove is 59 mm, and the width is 113.5 mm; the right groove is rectangular, the overall length of the left groove is 51.8 mm, and the width is 26.3 mm. There are 2 threaded holes on the upper part of this tooling, 1 threaded hole on the left part, 2 threaded holes on the lower part, 1 threaded hole on the right part, and 1 threaded hole in the middle, which are used to connect the printed circuit board after the power module is placed.
[0013] Among them, the length of this tooling is 219 mm, the width is 160 mm, and the thickness is 16.5 mm.
[0014] Among them, this tooling is a special tooling for assembling the brick-shaped power module. For example, Figure 1 the power modules G3 and G5 in are placed in the left groove, the power modules G2 and G4 are placed in the middle groove, and the power module G1 is placed in the right groove.
[0015] Among them, the left groove includes two parts: the upper left groove and the lower right groove. The length of the upper left groove is 59 mm, the width is 56.9 mm, the length of the lower right groove is 38.1 mm, and the width is 59.6 mm.
[0016] Among them, the lower part of the upper left groove is connected to the upper part of the lower right groove, and the distance between the left end of the upper left groove and the left end of the lower right groove is 24 mm.
[0017] Among them, rounded corners with a radius of 1.5 mm are provided at the corners of the left groove, the middle groove and the right groove.
[0018] Among them, the middle threaded hole is located below the right groove and on the right side of the middle groove.
[0019] Among them, the overall material of this tooling is aluminum or steel.
[0020] Among them, the surface of this tooling is treated with rust prevention for easy reuse.
[0021] Among them, the flatness of the bottom surface of this tooling is 0.2, and the parallelism of the top end face relative to the bottom surface is 0.1.
[0022] When welding the brick-type power module, first place 5 power modules in the left groove, the middle groove and the right groove of this tooling, that is, Figure 2 in the groove with a depth of 1 mm, the flange of the power module faces down and touches the groove, and the pins of the power module face up. At this time, the horizontal position of the power module is limited;
[0023] Subsequently, use pan head screws to install the printed circuit board on the top end face of this tooling, that is, Figure 2 (a) On the plane of the front view where the threaded hole is located, by controlling the tolerance of the limiting dimension of the groove, it can ensure that the pins of the power module are accurately and quickly inserted into the solder pads of the printed circuit board; at the same time, through the height dimension from the top end face of this tooling to the groove, that is, Figure 2 the dimension in the cross-sectional view accurately control the distance between the printed circuit board and the power module to eliminate the incoming height tolerance of the power module, ensure that the height dimension of the printed circuit board assembly after welding is consistent, and ensure that the power modules all contact the reinforcement frame well.
[0024] After welding is completed, pick up the printed circuit board and the power module as a whole.
[0025] This tooling of the present utility model is applicable to similar power products using brick-type power modules. It can be applied only by adjusting the groove position dimension, the outer shape dimension of the corresponding power module and the height dimension of the printed circuit board mounting table, and is suitable for manual welding and machine welding.
[0026] In the prior art, before welding using the tooling of the present utility model, it is necessary to use the reinforcement frame part in the product to position the brick-type power module and the printed circuit board, and continuously adjust the horizontal position of the power module manually to make it pass through the solder pads of the printed circuit board.
[0027] This tooling of the utility model can quickly and accurately position the power module and the printed circuit board at one time, while ensuring high consistency in subsequent welding, and improving the welding efficiency of the brick-type power module. In the production process, it also avoids the risk of damaging the reinforcement frame parts and reduces the protection process of the reinforcement frame; during mass production, it also helps to optimize the production process, facilitates the welding of the product on the machine, and significantly shortens the production cycle of the product.
[0028] The above are only the preferred embodiments of the utility model. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the utility model, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the utility model.
Claims
1. A welding tool for a brick-type power module, characterized in that: The tooling is a rectangular parallelepiped, and the interior of the tooling is hollowed out to form a box body with a hollowing depth of 11.9mm. A left groove, a middle groove and a right groove with a depth of 1mm are provided on the bottom surface of the hollowed space; among them, the left groove is L-shaped, with an overall length of 59mm and a width of 116.5mm; the middle groove is rectangular, with an overall length of 59mm and a width of 113.5mm; the right groove is rectangular, with an overall length of 51.8mm and a width of 26.3mm; there are 2 threaded holes on the upper part of the tooling, 1 threaded hole on the left part, 2 threaded holes on the lower part, 1 threaded hole on the right part, and 1 threaded hole on the middle part.
2. The welding tool for brick-type power module according to claim 1, characterized in that: The tool is 219mm long, 160mm wide and 16.5mm thick.
3. The welding tool for brick-type power module according to claim 2, characterized in that: The left groove includes two parts: an upper left groove and a lower right groove.
4. The welding tool for the brick-type power module according to claim 3, characterized in that: The upper left groove is 59mm long and 56.9mm wide, and the lower right groove is 38.1mm long and 59.6mm wide.
5. The welding tool for brick-type power module according to claim 4, characterized in that: The lower portion of the upper left groove is connected to the upper portion of the lower right groove, and the distance between the left end of the upper left groove and the left end of the lower right groove is 24 mm.
6. The welding tool for brick-type power module according to claim 1, characterized in that: The corners of the left groove, the middle groove and the right groove are all provided with rounded corners with a radius of 1.5 mm.
7. The welding tool for brick-type power module according to claim 1, characterized in that: The middle threaded hole is located below the right groove and to the right of the middle groove.
8. The welding tool for brick-type power module according to claim 1, characterized in that: The overall material of the tooling is aluminum or steel, and the surface of the tooling is treated with rust prevention.
9. The welding tool for brick-type power module according to claim 8, characterized in that: The flatness of the bottom surface of the tool is 0.2, and the parallelism of the top end surface relative to the bottom surface is 0.1.