Novel photovoltaic aluminum alloy profile
By designing a double-walled closed-cavity structure and an arc-shaped anti-overflow protrusion photovoltaic aluminum alloy profile, the bonding strength and durability issues of traditional photovoltaic module frames have been solved, resulting in reduced glue overflow and improved bending stiffness, thereby enhancing the overall performance and safety of photovoltaic modules.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-12
- Publication Date
- 2026-04-14
AI Technical Summary
Traditional photovoltaic module frames suffer from insufficient bonding strength and durability, resulting in adhesive overflow and inadequate bending stiffness, which affects module performance and safety.
A novel photovoltaic aluminum alloy profile is designed, which adopts a double-walled closed cavity structure and an arc-shaped anti-overflow protrusion, combined with a wave-shaped reinforcing texture and an elastic sealing strip to enhance the bending stiffness of the clamping groove, and improves the connection stability through the accommodating cavity and dovetail connecting plate.
It effectively reduces glue overflow, improves bonding effect and bending stiffness, and enhances the overall performance and safety of photovoltaic modules.
Smart Images
Figure CN224124092U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of aluminum profile technology, specifically a novel photovoltaic aluminum alloy profile. Background Technology
[0002] In the photovoltaic industry, aluminum alloy profiles are widely used in the frames and support systems of photovoltaic modules due to their excellent mechanical properties and corrosion resistance. Traditional photovoltaic module frame assembly methods typically require injecting adhesive into the frame grooves to enhance the bond strength between the photovoltaic panel and the frame. However, this assembly method has significant drawbacks. First, the adhesive often overflows after injection, especially in the gaps formed on both sides of the contact area between the photovoltaic panel and the aluminum frame profile. The adhesive is easily squeezed out, which not only reduces the bonding effect but also leads to substantial waste and cleaning work, increasing labor costs.
[0003] Secondly, this assembly method also presents durability issues. Because the clamping grooves of the aluminum profile frame are generally designed with straight openings, their bending stiffness is insufficient, making them prone to deformation during long-term use. This deformation not only affects the overall performance of the photovoltaic module but may also reduce its safety and reliability. Therefore, improving the bonding strength and durability between the photovoltaic module frame and the photovoltaic panel has become an urgent problem to be solved.
[0004] To address the aforementioned issues, a photovoltaic aluminum alloy profile was designed to improve adhesion, reduce adhesive overflow, and enhance the bending stiffness of the frame. Utility Model Content
[0005] The purpose of this utility model is to overcome the aforementioned technical difficulties and provide a new type of photovoltaic aluminum alloy profile that aims to improve the bonding effect, reduce adhesive overflow, and enhance the bending stiffness of the frame.
[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a novel photovoltaic aluminum alloy profile, comprising an integrally formed profile body, wherein the upper part of the profile body is provided with a clamping groove for clamping a photovoltaic panel, the top edge of the clamping groove has a double-walled closed cavity structure, and the top edge of the groove is provided with an arc-shaped anti-overflow protrusion extending inward; the lower part of the profile body is provided with a connecting plate with a dovetail tenon, the bottom edge of the clamping groove is provided with a groove, and the end of the groove is connected to an inclined support plate; inside the profile body, between the clamping groove and the connecting plate, there is a receiving cavity for accommodating corner brackets, the lower end of the receiving cavity is provided with a screw groove, and an outwardly extending support is formed on the outside of the screw groove opening.
[0007] Furthermore, the inner wall thickness of the double-walled closed cavity structure is 1.2-1.5 times the outer wall thickness, and the inner wall is provided with wavy reinforcing texture.
[0008] Furthermore, the spacing between the reinforcing ripple peaks is 1.5-2 times the thickness of the closed cavity, and the extension direction of the reinforcing ripples coincides with the curvature center axis of the arc-shaped anti-overflow protrusion.
[0009] Furthermore, the groove has a "T" shaped cross section and a depth of 1 / 5 to 1 / 4 of the height of the profile body. The inner wall of the groove is provided with an elastic sealing strip, and the surface of the sealing strip is provided with hemispherical protrusions.
[0010] Furthermore, a stress dispersion angle of 115-125° is formed between the support platform and the screw groove, and the thickness of the support platform is 1.2-1.5 times the width of the screw groove.
[0011] Furthermore, the surface of the support platform is provided with anti-slip microgrooves with a depth of 0.1-0.3mm and a groove spacing of 0.5-1mm.
[0012] The novel photovoltaic aluminum alloy profile provided by this utility model has the following beneficial effects:
[0013] This invention utilizes the synergistic effect of a double-walled closed cavity structure and an arc-shaped anti-overflow protrusion to improve the bending stiffness of the clamping groove while guiding the colloid to be evenly compressed using the arc curvature, thereby reducing the amount of colloid leakage under high-temperature conditions. This invention is easy to operate, highly practical, and effectively solves the problem of poor bonding strength and durability between the frame and photovoltaic panel of existing photovoltaic aluminum alloy profile components. Attached Figure Description
[0014] Figure 1 This is a structural schematic diagram of the novel photovoltaic aluminum alloy profile of this utility model.
[0015] Figure 2 This is a schematic diagram of the arc-shaped anti-overflow protrusion of the novel photovoltaic aluminum alloy profile of this utility model.
[0016] Figure 3 This is a schematic diagram of the groove structure of the novel photovoltaic aluminum alloy profile of this utility model.
[0017] In the diagram, 1. Profile body; 2. Clamping groove; 3. Top groove edge; 4. Arc-shaped anti-overflow protrusion; 5. Connecting plate; 6. Groove; 7. Inclined support plate; 8. Receiving cavity; 9. Screw groove; 10. Support platform. Detailed Implementation
[0018] The technical solution of this utility model will be clearly and completely described below with reference to specific embodiments. The described embodiments are merely some, not all, of these embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.
[0019] Example 1
[0020] like Figure 1-3 The present invention provides a novel photovoltaic aluminum alloy profile. The main body 1 of the aluminum alloy profile is integrally formed from 6063-T5 aluminum alloy through an extrusion process, with a total height of 80mm. The upper photovoltaic clamping groove 2 and the lower dovetail connecting plate 5 achieve a structural transition through a receiving cavity 8. The overall wall thickness adopts a gradient design, with the top wall thickness gradually transitioning from 3.5mm to 5mm at the bottom, using a 15° slope transition, which can reduce weight while improving bending stiffness. The main body 1 of the profile has a clamping groove 2 for clamping the photovoltaic panel. The top groove edge 3 of the clamping groove 2 has a double-walled closed cavity structure. The inner wall thickness of the double-walled closed cavity structure is 1.2-1.5 times the outer wall thickness, and the inner wall has wavy reinforcing patterns. The spacing between the peaks of the reinforcing patterns is 1.5-2 times the thickness of the closed cavity, and the extension direction of the reinforcing patterns coincides with the curvature center axis of the arc-shaped anti-overflow protrusion 4. The outer wall thickness is 2.5mm, bearing the main wind load, and the inner wall thickness is 3mm. The 0mm diameter, combined with the wavy reinforcing texture to form a multi-directional stress transmission path, and the 8mm spacing between the inner and outer walls to form a closed cavity, are then sealed with 0.2MPa nitrogen gas to form an inert gas protective layer. According to the calculation based on the theory of moment of inertia of cross sections, its equivalent bending stiffness is 7.5% higher than that of the equal-thickness double-wall structure and 41.4% higher than that of the traditional single-wall structure. When the wall thickness ratio is less than 1:1, the inner wall is prone to buckling, and when the wall thickness ratio is greater than 1:1.5, the extrusion molding difficulty increases significantly.
[0021] Compared with the single-wall structure, the photovoltaic aluminum alloy profile provided in this application has significantly improved bending strength with the double-wall closed cavity structure, and its wind pressure bearing capacity remains unchanged at 3.5 kPa. The top groove edge 3 openings are provided with an inwardly extending arc-shaped anti-overflow protrusion 4. The radius of curvature of the arc-shaped anti-overflow protrusion 4 is R=4mm, which forms a 0.8mm equidistant glue seam with the edge of the photovoltaic panel. The arc-shaped anti-overflow protrusion 4 and the double-wall closed cavity structure of this application form a double seal, and the amount of glue overflow is reduced by more than 60% compared with the traditional structure.
[0022] The lower part of the profile body 1 is provided with a connecting plate 5 with a dovetail tenon, and the bottom edge of the clamping groove 2 is provided with a groove 6, and the end of the groove 6 is connected to an inclined support plate 7; the interior of the profile body 1 is provided with a receiving cavity 8 for accommodating corner brackets between the clamping groove 2 and the connecting plate 5, and the lower end of the receiving cavity 8 is provided with a screw groove 9. The outer side of the groove of the screw groove 9 is formed with an outwardly extending support platform 10. The support platform 10 and the screw groove 9 form a stress dispersion angle of 115-125°. The thickness of the support platform 10 is 1.2-1.5 times the width of the screw groove 9. The surface of the support platform 10 is laser-engraved with anti-slip microgrooves with a depth of 0.1-0.3mm and a groove spacing of 0.5-1mm. Tests have shown that when the thickness of the support platform 10 and the width of the screw groove 9 are in a ratio of 1.2:1, the width of the screw groove 9 is 5-8mm, and the stress dispersion angle is 120±5°, the stress concentration at the bolt connection can be effectively reduced. Comparative tests show that the photovoltaic aluminum alloy profile provided by this application has significantly higher compressive strength than existing photovoltaic profiles.
[0023] Example 2
[0024] Based on the above embodiments, in order to improve the sealing effect, the cross-section of the groove 6 is T-shaped, the depth is 1 / 5-1 / 4 of the height of the profile body 1, and the inner wall of the groove 6 is provided with an elastic sealing strip made of EPDM material. The surface of the sealing strip is provided with hemispherical protrusions with a longitudinal spacing of 4mm and a transverse staggered arrangement, with adjacent rows offset by 2mm. The simulation test results show that the photovoltaic aluminum alloy profile provided in this application has a 5% reduction in thermal displacement under a temperature difference of ±40℃ compared with the traditional photovoltaic aluminum alloy profile.
[0025] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.
[0026] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A novel photovoltaic aluminum alloy profile, comprising an integrally formed profile body (1), characterized in that: The upper part of the profile body (1) is provided with a clamping groove (2) for clamping photovoltaic panels. The top groove edge (3) of the clamping groove (2) has a double-walled closed cavity structure. The top groove edge (3) has an arc-shaped anti-overflow protrusion (4) extending inward. The lower part of the profile body (1) is provided with a connecting plate (5) with a dovetail tenon. The bottom groove edge of the clamping groove (2) is provided with a groove (6), and the end of the groove (6) is connected to an inclined support plate (7). The interior of the profile body (1) is provided with a receiving cavity (8) for accommodating corner brackets between the clamping groove (2) and the connecting plate (5). The lower end of the receiving cavity (8) is provided with a screw groove (9). The outside of the slot of the screw groove (9) is formed with an outwardly extending support platform (10).
2. The novel photovoltaic aluminum alloy profile according to claim 1, characterized in that: The inner wall thickness of the double-walled closed cavity structure is 1.2-1.5 times that of the outer wall thickness, and the inner wall is provided with wavy reinforcing texture.
3. The novel photovoltaic aluminum alloy profile according to claim 2, characterized in that: The spacing between the peaks of the reinforcing ripples is 1.5-2 times the thickness of the closed cavity, and the direction of the reinforcing ripples extends in the same direction as the curvature center axis of the arc-shaped anti-overflow protrusion (4).
4. The novel photovoltaic aluminum alloy profile according to claim 1, characterized in that: The groove (6) has a "T" shaped cross section and a depth of 1 / 5 to 1 / 4 of the height of the profile body (1). The inner wall of the groove (6) is provided with an elastic sealing strip, and the surface of the sealing strip is provided with hemispherical protrusions.
5. The novel photovoltaic aluminum alloy profile according to claim 1, characterized in that: The support (10) and the screw groove (9) form a stress dispersion angle of 115-125°, and the thickness of the support (10) is 1.2-1.5 times the width of the screw groove (9).
6. The novel photovoltaic aluminum alloy profile according to claim 5, characterized in that: The surface of the support (10) is provided with anti-slip microgrooves with a depth of 0.1-0.3mm and a groove spacing of 0.5-1mm.