A power module fixing device

Abstract

The utility model discloses a kind of start power module fixing device, it is related to power module fixing device technical field, the device includes module and box, the module is filled and fixed in the inside of box by pouring sealant, the inside of box is provided with auxiliary fixing structure;The auxiliary fixing structure includes at least one group trapezoidal crossbeam pair.The utility model cooperates trapezoidal crossbeam and pouring sealant, and the point contact of traditional bolt fixation is upgraded to surface contact, contact area increases, stress distribution is more uniform;And using the fluidity of pouring sealant, the glue pouring requirement of module side can be realized, to further improve the stability of module in box;And by controlling the filling height of pouring sealant is not higher than crossbeam height, both ensure that pouring sealant can fill gap and form effective fixed layer, also avoid the overflow or unnecessary pressure to module possibly caused by colloid too high.This improves the reliability and durability of entire start power module fixing device.

Description

Technical Field

[0001] This utility model relates to the technical field of power module fixing devices, specifically a power module fixing device for starting and stopping. Background Technology

[0002] With the continuous development of the new energy industry, automotive starting power supplies are gradually shifting from lead-acid batteries to lithium batteries. Given the increasingly standardized dimensions of lithium-ion batteries, the requirements for the internal structural design and securing of the battery pack are becoming increasingly stringent.

[0003] Traditional starter battery modules, secured with bolts or using complex brackets, are difficult to fix effectively in this compact space. Insufficient structural strength often leads to displacement and vibration of the module during vehicle operation, directly impacting battery performance and safety. Furthermore, traditional devices require significant installation space, resulting in low utilization of the internal space and hindering miniaturization and integrated design. Utility Model Content

[0004] The purpose of this invention is to provide a power supply module fixing device to solve the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A power supply module fixing device includes a module and a housing. The module is filled and fixed inside the housing with potting compound. An auxiliary fixing structure is provided inside the housing. The auxiliary fixing structure includes at least one pair of trapezoidal beams. Each pair of trapezoidal beams includes a first beam and a second beam. A potting port is provided between the first beam and the second beam.

[0006] Based on the above technical solutions, the present invention also provides the following preferred solutions: Preferably, the potting port is used for filling with potting compound and for the exit of the circuitry at the bottom of the module, and the height of the potting compound is not higher than the height of the first crossbeam and the second crossbeam.

[0007] Preferably, the trapezoidal beams in the auxiliary fixing structure can be installed on one or both sides inside the box; when installed on both sides, the projections of the glue-filling ports of the trapezoidal beams on the sides of the box can be the same, different, or partially overlapping.

[0008] Preferably, a first side plate is welded and fixed to the side of the first crossbeam near the glue injection port.

[0009] Preferably, a second side plate is welded and fixed to the side of the second crossbeam near the glue injection port.

[0010] Preferably, the upper ends of the first and second crossbeams are set as inclined surfaces.

[0011] Preferably, a third crossbeam is welded and fixed to the top of the inner wall of the box.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model upgrades the point contact of traditional bolt fixing to surface contact through the synergistic effect of the trapezoidal crossbeam and potting compound, increasing the contact area and resulting in more uniform stress distribution. Furthermore, the fluidity of the potting compound allows for side potting of the module, further improving the module's stability within the enclosure. By controlling the potting compound filling height to not exceed the height of the crossbeam, it ensures that the potting compound fully fills the gaps and forms an effective fixing layer, while avoiding overflow or unnecessary pressure on the module due to excessive compound. This enhances the reliability and durability of the entire power supply module fixing device.

[0013] 2. This utility model introduces trapezoidal crossbeams as an auxiliary fixing structure, effectively dispersing the pressure of the module on the box and significantly improving the stability of the overall structure. A filling port is provided between the first and second crossbeams of the trapezoidal crossbeams, not only providing a channel for filling with potting compound but also cleverly utilizing the internal space of the box. By reasonably setting the position and size of the filling port, reliable fixing of the module can be achieved without increasing the overall size of the box, thereby improving the internal space utilization rate. Furthermore, the filling port ensures that the compound evenly fills the dead corners at the bottom of the box, leaving no air bubbles or voids. Simultaneously, the filling port serves as a stress release channel, working in conjunction with the first and second crossbeams to gradually release the internal stress of the compound, avoiding the risk of cracking caused by rapid curing.

[0014] 3. Based on the module's size and fixing requirements, this utility model allows for the trapezoidal crossbeams in the auxiliary fixing structure to be installed on one or both sides inside the housing. When the module size is small or the fixing requirements are low, a single-sided trapezoidal crossbeam design can be used; if the module size is large or needs to withstand high-intensity vibration, a double-sided symmetrical arrangement of trapezoidal crossbeams is chosen to form a two-way support structure, significantly improving impact resistance and overall stability. When a double-sided trapezoidal crossbeam arrangement is used, the projections of the two glue inlets on the sides of the housing can be completely identical, completely different, or partially overlapping. This diverse design meets the needs of different application scenarios, such as standardized glue filling processes, differentiated fixing in space-constrained scenarios, and compact layout requirements. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the auxiliary fixing structure of this utility model.

[0017] Figure label annotations: 01, module; 02, potting compound; 03, housing; 11, first crossbeam; 22, second crossbeam; 33, potting port; 44, first side plate; 55, second side plate; 66, third crossbeam. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0019] In one embodiment, such as Figure 1 and Figure 2 As shown, a power supply module fixing device includes a module 01 and a housing 03. The module 01 is filled and fixed inside the housing 03 with potting compound 02. An auxiliary fixing structure is provided inside the housing 03. The auxiliary fixing structure includes at least one set of trapezoidal beam pairs. Each set of trapezoidal beam pairs includes a first beam 11 and a second beam 22. A potting port 33 is provided between the first beam 11 and the second beam 22. The potting port 33 is used for filling with potting compound 02 and for the exit of the bottom wiring of the module 01.

[0020] In this embodiment, the welding of module 01 is completed first, and then module 01 is placed into housing 03 through the hooks on both sides of the end plate of module 01, followed by performance testing. Among them, the first crossbeam 11 and the second crossbeam 22 in the trapezoidal crossbeam disperse the pressure of module 01 on housing 03, significantly improving the stability of the overall structure, helping to resist the vibration and impact generated during vehicle operation, and ensuring that module 01 is firmly fixed in housing 03. The glue inlet 33 in the trapezoidal crossbeam facilitates the entry of potting compound 02 into housing 03, thereby fixing module 01 to housing 03.

[0021] In an optional embodiment, such as Figure 1 and Figure 2 As shown, the height of the potting compound 02 is not higher than the height of the first crossbeam 11 and the second crossbeam 22.

[0022] It should be noted that the filling port 33 between the trapezoidal crossbeams not only provides a channel for the filling of the potting compound 02, but also cleverly utilizes the internal space of the housing 03. By reasonably setting the position and size of the filling port 33, the module 01 can be reliably fixed without increasing the overall size of the housing 03, thereby improving the internal space utilization of the housing 03.

[0023] The filling port 33 between the trapezoidal crossbeams not only provides a channel for filling the potting compound 02, but also cleverly utilizes the space inside the box 03. By reasonably setting the position and size of the filling port 33, the module 01 can be reliably fixed without increasing the overall size of the box 03, thereby improving the space utilization rate inside the box 03.

[0024] The filling port 33 serves as a filling channel for the potting compound 02, ensuring that the potting compound 02 can fully fill the gap between the module 01 and the housing 03. The filling port 33 facilitates observation of the uniform filling of the potting compound 02, ensuring that the compound evenly fills the dead corners at the bottom of the housing, without air bubbles or voids. Furthermore, the filling port 33 acts as a stress relief channel, working in conjunction with the first crossbeam 11 and the second crossbeam 22 to allow the internal stress of the compound to be gradually released through the filling port 33, avoiding the risk of cracking caused by rapid curing.

[0025] To ensure the curing effect of the potting compound 02 and the fixing stability of the module 01, the filling height of the potting compound 02 is strictly controlled within the range of no more than the height of the first crossbeam 11 and the second crossbeam 22. This ensures that the potting compound 02 can fully fill the gaps and form an effective fixing layer, while avoiding overflow or unnecessary pressure on the module 01 that may be caused by excessive amount of compound, thereby improving the reliability and durability of the entire power-on module fixing device.

[0026] Encapsulant 02 can be a two-component epoxy resin encapsulant with a viscosity strictly controlled at 11000±500 MPa·s. This ensures excellent flowability and filling properties at room temperature (25℃), allowing the colloid to penetrate the perimeter of the module and form a high-shear-strength adhesive layer. This upgrades the fixation from "point contact" to "surface contact," effectively solving the stress concentration problem of traditional bolt fixing. The colloid undergoes three stages of curing: gelation, hardening, and complete curing, achieved through a stepped heating process: initial gelation is completed at 40℃ for 2 hours, followed by a complete curing at 60℃ for 4 hours, ultimately achieving a shear strength of over 8.5 MPa.

[0027] In an optional embodiment, such as Figure 1 and Figure 2 As shown, the trapezoidal beams in the auxiliary fixing structure can be installed on one or both sides inside the housing 03; when installed on both sides, the projections of the glue inlets 33 of the trapezoidal beams on the sides of the housing 03 can be the same, different, or partially overlapping.

[0028] It should be noted that the beam arrangement for fixing module 01 should be flexibly selected based on its size and fixing requirements. When module 01 is small or the fixing requirements are relatively low, a single-sided trapezoidal beam design can be used. This design, through the synergy of single-sided support and potting compound 02, can achieve basic fixing of the module.

[0029] If module 01 is large in size or needs to withstand high-intensity vibration, then a pair of trapezoidal crossbeams arranged symmetrically on both sides should be selected. This arrangement can form a two-way support structure, which can significantly enhance the module's impact resistance and improve its overall stability.

[0030] When a double-sided trapezoidal crossbeam arrangement is used, the projection of the two glue inlets 33 on the side of the box 03 has three selectable states: First, they are completely identical: that is, the two potting ports 33 are aligned. This design facilitates the implementation of standardized potting processes, ensures uniform filling of potting compound 02, and simplifies line management. It is more suitable for symmetrically laid-out modules 01. Secondly, they are completely different: by staggering the positions of the two glue inlets 33, the risk of mutual interference of glue during double-sided glue filling can be effectively avoided, and the glue filling path can be optimized. This design is especially suitable for scenarios with limited space or requiring differentiated fixation. Thirdly, partial overlap: The design method of partial projection overlap, while ensuring structural strength, achieves a compact layout by sharing part of the side space of the box 03, which is suitable for application environments with strict volume requirements; In an optional embodiment, such as Figure 2 As shown, a first side plate 44 is welded and fixed to the side of the first crossbeam 11 near the glue inlet 33.

[0031] Among them, such as Figure 2 As shown, a second side plate 55 is welded and fixed to the side of the second crossbeam 22 near the glue inlet 33.

[0032] It should be noted that during the filling process of potting compound 02, the second side plate 55 and the first side plate 44 act as physical barriers to effectively prevent the colloid from flowing to the unexpected area on the side of module 01, ensuring that the colloid is concentrated in the target gap and improving the fixation reliability; the second side plate 55 and the first side plate 44 are symmetrically distributed, and together they constitute the closed lateral constraint structure of the potting port 33.

[0033] In an optional embodiment, such as Figure 2 As shown, the upper ends of the first crossbeam 11 and the second crossbeam 22 are set as inclined surfaces.

[0034] It should be noted that the inclined surface forms a natural guide ramp, allowing module 01 to automatically slide along the inclined surface to the preset positioning position during hoisting, significantly reducing the difficulty of manual alignment. Its guide inclined surface is anodized to form a wear-resistant layer, which effectively resists friction damage during the installation of module 01 and extends the service life of the structure.

[0035] In an optional embodiment, such as Figure 1 As shown, a third crossbeam 66 is welded and fixed to the top of the inner wall of the box 03.

[0036] It should be noted that the third crossbeam 66 is equipped with an array of threaded holes, which can be quickly locked to the protective plate mounting bracket by bolts; the third crossbeam 66 is machined with a guide slope, which provides initial vertical positioning for the module 01 during the hoisting process, ensuring that the module 01 can enter the box 03.

[0037] The above embodiment discloses a power supply module fixing device, wherein the module 01 is first welded, and then the module 01 is placed into the housing 03 by the hooks on the end plates on both sides of the module 01, and then the performance test is carried out.

[0038] Next, potting compound 02 is injected into the housing 03 through the potting port 33, and the formation of potting compound 02 is observed through the potting port 33 to determine the condition of potting compound 02 in the housing 03, thereby ensuring that the potting compound 02 fixes the module 01 inside the housing 03.

[0039] When the size of module 01 is small or the fixing requirements are low, a single-sided trapezoidal beam pair design can be adopted. When the size of module 01 is large or needs to withstand high-intensity vibration, a double-sided symmetrical trapezoidal beam pair is selected.

[0040] Example 1 When using a single-sided trapezoidal beam in the design, the foundation is fixed through the synergistic effect of single-sided support and potting compound 02.

[0041] Example 2 When trapezoidal crossbeams are set on both sides, the 33-aligned design of the two-sided potting ports facilitates the implementation of standardized potting processes, ensures uniform filling of potting compound 02, and simplifies line management. It is suitable for symmetrically laid-out modules 01.

[0042] Example 3 When trapezoidal crossbeams are set on both sides, the risk of glue interference during glue filling can be avoided by staggering the glue inlet position 33, and the glue filling path can be optimized. This is especially suitable for scenarios with limited space or requiring differentiated fixation.

[0043] Example 4 When trapezoidal crossbeams are set on both sides, the partial projection overlap design ensures structural strength while achieving a compact layout by sharing part of the side space of the box 03, making it suitable for volume-sensitive application environments.

[0044] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A device for fixing a power supply module, characterized in that, The device includes a module (01) and a housing (03). The module (01) is filled and fixed inside the housing (03) with potting compound (02). An auxiliary fixing structure is provided inside the housing (03). The auxiliary fixing structure includes at least one set of trapezoidal beam pairs. Each set of trapezoidal beam pairs includes a first beam (11) and a second beam (22). A potting port (33) is provided between the first beam (11) and the second beam (22). The potting port (33) is used for filling with potting compound (02) and for the exit of the bottom circuit of the module (01).

2. The power supply module fixing device according to claim 1, characterized in that, The height of the potting compound (02) is not higher than the height of the first crossbeam (11) and the second crossbeam (22).

3. The power supply module fixing device according to claim 2, characterized in that, The trapezoidal beams in the auxiliary fixing structure can be installed on one or both sides inside the box (03); when installed on both sides, the projections of the glue inlets (33) of the trapezoidal beams on the sides of the box (03) can be the same, different or partially overlapping.

4. The power supply module fixing device according to claim 2, characterized in that, The first side plate (44) is welded and fixed on the side of the first crossbeam (11) near the glue inlet (33).

5. The power supply module fixing device according to claim 2, characterized in that, The second side plate (55) is welded and fixed on the side of the second crossbeam (22) near the glue inlet (33).

6. The power supply module fixing device according to claim 2, characterized in that, The upper ends of the first crossbeam (11) and the second crossbeam (22) are set as inclined surfaces.

7. The power supply module fixing device according to claim 1, characterized in that, A third crossbeam (66) is welded and fixed to the top of the inner wall of the box (03).

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