Reinforced power module shell

Abstract

The utility model provides a reinforced power supply module housing, which is suitable for being applied to a multi-vibration environment, and can ensure the good stability of circuit board fixation and ensure the efficacy of a power supply module. The shell comprises a shell body and a cover plate, four corners in the shell body are provided with integrally formed block-up blocks, a circuit board is installed in the shell body and is in contact support with the block-up blocks at the corners of the shell body, a positioning pin is arranged at the position close to each block-up block, and the positioning pins are connected with the circuit board in a welded mode.

Description

Technical Field

[0001] The utility model relates to the technical field of power module structures, in particular to a reinforced power module shell. Background Art

[0002] With the rapid development of power modules, the increasing number of components mounted on their circuit boards has left little room inside the power module enclosure. Traditional screw fastening of the circuit board to the enclosure is difficult, while relying solely on adhesive bonding to secure the circuit board is difficult to ensure effective product retention. When power modules are used in high-vibration environments, the pins on the circuit board may shift relative to each other due to severe vibration. In severe cases, the mechanical stress applied to the pins may exceed their tolerance, causing them to break, leading to power module failure. Utility Model Content

[0003] In view of the problem that the existing power module housing lacks space to fix the circuit board using traditional locking screws, and the use of glue fixation makes the circuit board unstable. When used in a vibrating environment, it is easy to cause the circuit board pins to break, and ultimately lead to the failure of the power module. The utility model provides a reinforced power module housing, which is suitable for use in a high-vibration environment and can also ensure the stability of the circuit board fixation, thereby ensuring the effectiveness of the power module.

[0004] The technical solution is as follows: a reinforced power module housing, which includes a housing body and a cover plate, characterized in that: one-piece raised blocks are provided at the four corner positions inside the housing body, and the circuit board is installed inside the housing body and is in contact with and supported by the raised blocks at its corners, and a positioning pin is provided near each of the raised blocks, and the positioning pin is welded to the circuit board.

[0005] The further feature is that: the positioning pin can be a gold pin with a diameter of φ1mm, the positioning pin is used to support the circuit board and has a grounding function, and the positioning pin is installed inside the housing body by riveting;

[0006] A stainless steel self-clinching stud is further provided at the inner corner of the shell body. The height of the stainless steel self-clinching stud is slightly higher than the height of the cover plate plane. The shell body is connected to the external mechanism through the stainless steel self-clinching stud.

[0007] The diameter of the stainless steel self-riveting studs is φ4.2 mm, and the stainless steel self-riveting studs are installed by self-riveting at four corners close to the shell body.

[0008] After adopting the above structure, the setting of the spacer block inside the shell body can play a supporting and cushioning role when the circuit board is installed inside it, ensuring the stability of the circuit board, and the setting of the positioning pin can be welded to the circuit board to further ensure the stability of the circuit board after installation. At the same time, the spacer block and the positioning pin occupy a small space and are highly practical, making it suitable for use in a multi-vibration environment to ensure the effectiveness of the power module. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0010] Figure 2 This is a schematic diagram of the structure of the housing body of the utility model (excluding the stainless steel self-clinching studs);

[0011] Figure 3 This is a top view of the circuit board of the utility model installed inside the housing body. DETAILED DESCRIPTION

[0012] like Figures 1 to 3 As shown, a reinforced power module housing comprises a housing body 1 and a matching cover plate 2. Integrally formed spacers 3 are provided at the four corners of the housing body 1. The power module's circuit board 7 is mounted within the housing body 1, with its four corners contacting and supporting the spacers 3. The spacers 3 milled into the four corners of the housing body 1 occupy only a small space, leaving ample room for the components on the circuit board 7.

[0013] The raised blocks 3 are provided with curved reliefs away from their connection with the housing 1. Positioning pins 4 are located near each relief portion of the raised blocks 3. These are installed by riveting and soldered to the circuit board inside the housing 1. These positioning pins 4 can be gold pins with a diameter of φ1mm. When installing the circuit board 7, simply soldering the positioning pins 4 to the board is simple and easy, improving the stability of the board 7 within the housing 1. They also help distribute the stress generated by vibration on the lead pins of the circuit board 7, making them more stable and less susceptible to damage, thereby increasing the lifespan and reliability of the power module. Furthermore, the positioning pins 4 inside the housing 1 also serve as grounding pins.

[0014] The housing body 1 also features stainless steel self-clinching studs 5 with a diameter of 4.2 mm. These studs are riveted near the four corners of the housing body 1. They extend through the circuit board 7 and through the through-holes 6 in the cover plate 2. These studs are slightly higher than the cover plate 2, securing the housing body 1 to external components. These studs serve as mounting holes for the power module, allowing for adjustment based on customer needs. The height of these studs is slightly above the cover plate 2. This ensures that these studs are the first thing the customer encounters when installing the power module, and also helps to mitigate some of the mechanical stress borne by the module's lead pins. The housing body 1 features a natural conductive oxidation finish. Compared to painting or anodizing, this surface treatment imparts electrical conductivity to the housing, enhancing the electromagnetic shielding effectiveness of the power module while also providing excellent heat dissipation.

[0015] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by anyone familiar with the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A reinforced power module housing, comprising a housing body and a cover, characterized in that: Integrally formed raising blocks are provided at the four corners inside the shell body. The circuit board is installed inside the shell body and is in contact with and supported by the raising blocks at its corners. Positioning pins are provided near each of the raising blocks, and the positioning pins are welded to the circuit board.

2. The reinforced power module housing according to claim 1, wherein: The positioning pin can be a gold pin with a diameter of φ1mm. The positioning pin is used to support the circuit board and has a grounding function. The positioning pin is riveted and installed inside the shell body.

3. The reinforced power module housing according to claim 1 or 2, characterized in that: Stainless steel self-clinching studs are further provided at the inner corners of the shell body. The height of the stainless steel self-clinching studs is slightly higher than the height of the cover plate plane. The shell body is connected to the external mechanism through the stainless steel self-clinching studs.

4. The reinforced power module housing according to claim 1, wherein: The diameter of the stainless steel self-riveting studs is φ4.2 mm, and the stainless steel self-riveting studs are installed by self-riveting at four corners close to the shell body.

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