A photovoltaic connection structure and system for standing seam roofs

Abstract

This utility model relates to the field of photovoltaic roofing technology, specifically to a photovoltaic connection structure and system for standing seam roofs, including a main pressure block, an upper pressure block, and a hook plate. The lower part of the main pressure block has a groove penetrating it along a first direction, extending through the lower end face of the main pressure block. A hook portion extending towards the center of the groove along a second direction is located on the side of the lower end of the groove. The main pressure block can be slidably connected to the rolled edge of the roof panel via the groove. The upper pressure block is fixed to the upper end of the main pressure block. Both ends of the upper pressure block along the first direction have horizontal limbs protruding outwards along the first direction, which are used to press the ends of the photovoltaic modules on the roof along the first direction. The hook plate is fixed to one side of the main pressure block perpendicular to the second direction. The hook plate is parallel to the first direction and includes a main body and hook bodies located at both ends of the main body along the first direction. The hook bodies bend upwards and towards the center of the hook plate along the first direction.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic roofing technology, and in particular to a photovoltaic connection structure and system for standing seam roofs. Background Technology

[0002] Steel structure factory buildings generally have large spans and occupy a large area, making them suitable for installing photovoltaic panels. Therefore, more and more photovoltaic power stations are being built on steel structure roofs.

[0003] In the relevant technical solution, roof panels are sequentially spliced ​​along a predetermined direction, with adjacent roof panels forming a corrugated structure through edge folding. Multiple photovoltaic (PV) modules are mounted on the corrugated structure of the roof panels, each PV module being supported by multiple corrugated structures. To secure the PV modules to the corrugated structure, a sliding and positioning main pressure block is installed on the corrugated structure. An upper pressure block is detachably fixed above the main pressure block, and the upper pressure block has two protruding pressure edges. During use, the pressure edges of the upper pressure block press against the ends of two adjacent PV modules to prevent the PV modules from detaching upwards from the main pressure block.

[0004] However, in the above technical solutions, the photovoltaic panels are mainly clamped by the pressure edge of the upper pressure block. When encountering strong winds, the photovoltaic panels are easily deformed by wind loads. In particular, the middle part of the photovoltaic panel is prone to arching upwards, and the ends of the photovoltaic panel are prone to detaching from the pressure edge of the upper pressure block, which can lead to damage to the photovoltaic panel and the entire roof system. Utility Model Content

[0005] This invention provides a photovoltaic connection structure and system for standing seam roofs, which can solve at least one of the above-mentioned technical problems.

[0006] To address the aforementioned technical problems, one or more embodiments of this utility model provide a photovoltaic connection structure for a standing seam roof, comprising a main pressure block, an upper pressure block, and a hook plate. The lower part of the main pressure block has a groove penetrating itself along a first direction, the groove extending through the lower end face of the main pressure block. A hook portion extending towards the center of the groove along a second direction is located on the side of the lower end of the groove. The first direction is perpendicular to the second direction, allowing the main pressure block to slide and be fixed to the rolled edge of the roof panel via the groove. The upper pressure block is detachably fixed to the upper end of the main pressure block. Both ends of the upper pressure block along the first direction have horizontal limbs protruding outwards along the first direction, which are used to press against the frame of the photovoltaic module at the end along the first direction on the roof. The hook plate is fixed to one side of the main pressure block perpendicular to the second direction, and parallel to the first direction. The hook plate includes a main body and hook bodies located at both ends of the main body along the first direction. The hook bodies bend upwards and towards the center of the hook plate along the first direction, and are used to abut against the lower limb of the frame of the photovoltaic module.

[0007] One or more embodiments of this utility model also provide a standing seam roofing system, including the photovoltaic connection structure described above. The roofing system further includes a plurality of roof panels arranged sequentially along a second direction. The ends of adjacent roof panels are bent along the second direction to form a corrugated structure, and the top of the corrugated structure has rolled edges. Above the roof panels are a plurality of photovoltaic modules arranged sequentially along a first direction. The photovoltaic modules have downwardly extending frames at both ends along the first direction, and the lower ends of the frames have lower limbs extending along the first direction toward the center of the photovoltaic modules. A main pressure block is supported on the upper end of the corrugated structure, and the ends of two adjacent photovoltaic modules are pressed between the horizontal limbs and the corrugated structure.

[0008] The beneficial effects of one or more of the above technical solutions are as follows:

[0009] In this design, the main pressure block is slidably connected to the rolled edge on the roof panel, and the upper pressure block is equipped with a horizontal limb that can press the photovoltaic module. After the horizontal limb vertically presses the frame of the ends of two adjacent photovoltaic modules, the overall fixing of the photovoltaic module and the roof panel can be achieved by locking the upper pressure block and the main pressure block, and the main pressure block and the rolled edge.

[0010] In this design, after the photovoltaic modules are fixed in place, the lower limbs and frame of adjacent photovoltaic modules are embedded between the two hooks of the hook plate. When the entire photovoltaic module deforms and bulges in the middle under wind load, the frame and lower limbs move inward towards the photovoltaic module. The hooks can stop the lower limbs of the photovoltaic module to prevent the end of the photovoltaic module from coming off the horizontal limb of the upper pressure block, thus preventing deformation and damage to the photovoltaic module and greatly enhancing its wind resistance. Attached Figure Description

[0011] Figure 1 This is an axial side view of the photovoltaic connection structure installed on the roof panel in an embodiment of this utility model;

[0012] Figure 2 This is a schematic diagram of a photovoltaic connection structure installed on a roof panel from another viewpoint in an embodiment of this utility model;

[0013] Figure 3 This is a front view schematic diagram of the photovoltaic connection structure installed on the roof panel in an embodiment of this utility model;

[0014] Figure 4 This is a side view of the photovoltaic connection structure installed on the roof panel in an embodiment of this utility model;

[0015] Figure 5 This is a schematic diagram of the main pressure block in an embodiment of the present invention;

[0016] Figure 6 This is a schematic diagram of the hook plate in an embodiment of the present invention;

[0017] Figure 7This is a schematic diagram of the wave crest structure formed by folding between adjacent roof panels in an embodiment of the present invention;

[0018] Figure 8 This is a side view of the photovoltaic module in an embodiment of the present invention;

[0019] Figure 9 This is a schematic diagram of the upper pressure block in an embodiment of the present invention.

[0020] In the diagram, 1 is the roof panel; 11 is the corrugated structure; 12 is the rolled edge; 2 is the main pressure block; 21 is the groove; 22 is the hook part; 23 is the stop part; 24 is the fourth screw hole; 25 is the second screw hole; 3 is the upper pressure block; 31 is the horizontal limb edge; 32 is the flat plate part; 33 is the straight plate part; 4 is the hook piece; 41 is the main body part; 42 is the hook body; 43 is the hook groove; 44 is the first screw hole; 5 is the second screw; 6 is the first screw; 7 is the photovoltaic module; 71 is the frame; 711 is the lower limb edge. Detailed Implementation

[0021] To clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0022] The photovoltaic connection structure of this application is applicable to the connection and fixation of photovoltaic modules 7 above a standing seam roof. Specifically, the standing seam roof panel 1 includes a plurality of roof panels 1 arranged sequentially along a second direction, with a corrugated structure 11 formed between the plurality of roof panels 1, and the plurality of corrugated structures 11 extending along a first direction. The corrugated structure 11 is formed by folding the edges of two adjacent roof panels 1 upward, and the upper end of the corrugated structure 11 has a rolled edge 12 with a seam extending along the first direction.

[0023] Multiple photovoltaic modules 7 are arranged sequentially along the first direction above the roof panel 1. The photovoltaic modules 7 are supported by the wave crest structure 11. The long side of the photovoltaic module 7 is in the same direction as the second direction, the short side of the photovoltaic module 7 is in the same direction as the first direction, and the second direction is perpendicular to the first direction.

[0024] It should be noted that in existing photovoltaic roof systems on the market, roof panels are arranged sequentially along the second direction, and multiple photovoltaic modules (i.e., photovoltaic panels) are arranged in rows along the first direction and in columns along the second direction, respectively. However, this application only considers the connection structure between adjacent photovoltaic modules when the photovoltaic modules are arranged along the first direction. That is, this application does not involve the arrangement of photovoltaic panels along the second direction or the node structure, which can be set by those skilled in the art.

[0025] like Figures 1-9As shown, one or more embodiments of this utility model provide a photovoltaic connection structure for a standing seam roof, including a main pressure block 2, an upper pressure block 3, and a hook plate 4. The lower part of the main pressure block 2 has a groove 21 extending through itself in a first direction, the groove 21 penetrating the lower end face of the main pressure block 2. A hook portion 22 extending towards the center of the groove 21 in a second direction is located on the side of the lower end of the groove 21. The first direction is perpendicular to the second direction, and the main pressure block 2 can be slidably connected and fixed to the rolled edge 12 of the roof panel 1 via the groove 21. Here, the rolled edge 12 is located within the groove 21 of the main pressure block 2, and the hook portion 22 of the main pressure block 2 is located below the rolled edge 12.

[0026] The upper pressure block 3 is detachably fixed to the upper end of the main pressure block 2. The upper pressure block 3 has horizontal limbs 31 protruding outward in the first direction at both ends. The horizontal limbs 31 are used to press the ends of the photovoltaic modules 7 on the roof in the first direction. The hook plate 4 is fixed to one side of the main pressure block 2 perpendicular to the second direction. The hook plate 4 is parallel to the first direction. The hook plate 4 includes a main body 41 and hook bodies 42 provided at both ends of the main body 41 in the first direction. The hook bodies 42 bend upward and towards the center of the hook plate 4 in the first direction. The hook bodies 42 are used to stop the lower limbs 711 of the frame 71 in the photovoltaic module 7.

[0027] Specifically, here the horizontal limb 31 is parallel to the first direction and the second direction, the width direction of the horizontal limb 31 is parallel to the first direction, the length direction of the horizontal limb 31 is parallel to the second direction, and the frame 71 of the two adjacent photovoltaic modules 7 is pressed between the two horizontal limbs 31 and the upper end of the lower wave crest structure 11.

[0028] Specifically, the upper pressure block 3 here includes a flat plate portion 32, with vertical straight plate portions 33 connected to both ends of the flat plate portion 32 along the first direction. The upper ends of the two straight plate portions 33 are connected to horizontal limbs 31, and the flat plate portion 32, straight plate portions 33, and horizontal limbs 31 form an inverted Z-shape. Specifically, the lower surface of the two horizontal limbs 31 is provided with several wavy anti-slip textures, and the material is an integrally extruded aluminum alloy profile with an anodized surface treatment to prevent surface corrosion.

[0029] Specifically, the main pressure block 2, the upper pressure block 3, and the hook plate 4 are all made of aluminum alloy. In some other embodiments, the aluminum alloy material can be replaced with other alloys.

[0030] In this embodiment, the main pressing block 2 is provided with a stop part 23 on the side for fixing the hook piece 4. The lower end face of the stop part 23 abuts against the upper end face of the main body part 41. The lower end face of the stop part 23 is parallel to the first direction and the second direction.

[0031] Specifically, the abutting portion 23 herein is integrally formed with the main pressing block 2, the abutting portion 23 is of an elongated strip structure, and the cross-sectional contour shape of the abutting portion 23 perpendicular to the first direction is square. More specifically, along the first direction, the length of the main pressing block 2 is equal to the length of the abutting portion 23.

[0032] In this embodiment, the upper end surface of the main body portion 41 is attached to the lower end surface of the abutting portion 23, the spacing between the two hook bodies along the first direction is L1, the length of the main pressing block 2 along the first direction is L2, and the length of the lower side edge 711 of the photovoltaic module 7 to be installed is L3, wherein 2L3+L2<L1. Under the above dimensional relationship of L1, L2 and L3, the frames 71 and lower side edges 711 of two adjacent photovoltaic modules 7 can be inserted between the two hook bodies 42 of the hook plate 4.

[0033] Specifically, the lower portion of the main body portion 41 arches downward, the lower surface of the main body portion 41 includes a plane located in the middle and inclined planes located on both sides of the plane along the first direction, and an inverted trapezoidal contour surface is formed between the plane and the two inclined planes.

[0034] In this embodiment, the hook plate 4 is provided with a first screw hole 44 penetrating through itself along the second direction, the side surface of the main pressing block 2 where the hook plate 4 is fixed is provided with a second screw hole 25 communicating with the chute 21 along the second direction, the first screw hole 44 and the second screw hole 25 are coaxial and fixed by a first screw 6.

[0035] Specifically, the projections of the first screw hole 44 and the second screw hole 25 along the second direction coincide with each other. The first screw 6 herein is a flat-end set screw, the flat-end set screw sequentially passes through the first screw hole 44 and the second screw hole 25, and finally the head end of the flat-end set screw can abut against the side surface of the curled edge 12. More specifically, the flat-end set screw herein is an M8 stainless steel inner hexagonal flat-end set screw. The M8 inner hexagonal set screw is made of stainless steel and has a length of 25 mm.

[0036] In this embodiment, the second screw hole 25 is provided on the side surface of the main pressing block 2 facing away from the hook portion 22, the first screw hole 44 is provided at the center of the main body portion 41 along the first direction; the second screw hole 25 is provided at the center of the main pressing block 2 along the first direction. This arrangement facilitates the first screw 6 to uniformly apply pressure to the hook plate 4 and the main pressing block 2.

[0037] In some other embodiments, the second screw hole 25 can also be opened on the side surface of the main pressing block 2 close to the hook, and at this time the abutting portion 23 is also opened at the side position of the main pressing block 2 close to the hook. That is, it is only necessary to ensure that the second screw hole 25 and the abutting portion 23 are located on the same side surface of the main pressing block 2.

[0038] In this embodiment, the upper pressing block 3 is provided with a third screw hole penetrating through itself in the vertical direction, the main pressing block 2 is provided with a fourth screw hole 24 penetrating through itself in the vertical direction, and the third screw hole and the fourth screw hole 24 are fixed by a second screw 5 after being aligned.

[0039] Specifically, the second screw 5 is an M8 stainless steel socket head cap screw. The second screw 5 is made of stainless steel and includes a spring washer. The length of the second screw 5 can be adjusted to match photovoltaic modules 7 with different frame heights 71 on the market.

[0040] In this embodiment, the central axes of the first screw hole 44, the second screw hole 25, the third screw hole, and the fourth screw hole 24 are in the same vertical plane. This arrangement makes it easier for the pressure applied by the first screw 6 and the second screw 5 to the main pressure block 2 to be on the same plane, avoiding pressure on the main pressure block 2 from different directions, and making the connection between the main pressure block 2 and the wave crest structure 11 more stable.

[0041] In this embodiment, the lower end face of the stop portion 23 is not higher than the top of the slide groove 21, and the first screw hole 44 is higher than the hook portion 22. This arrangement can prevent the stop portion 23 and the hook piece 4 from obstructing the photovoltaic module 7 from overlapping downwards on the top of the crest structure 11. Furthermore, it ensures that the pressing force of the first screw 6 on the rolled edge 12 and the reaction force of the slide groove 21 on the rolled edge 12 are applied approximately symmetrically, preventing uneven stress on the rolled edge 12 and subsequent deformation.

[0042] In this embodiment, the hook 42 has an upwardly bent first part and a second part extending from the upper end of the first part toward the center of the main body 41. The first part, the second part and the main body 41 together form a hook groove 43 that can be inserted into the lower limb side 711.

[0043] Specifically, the hook groove 43 extends through the hook piece 4 along the second direction. When the photovoltaic module 7 is not deformed, part of the lower limb edge 711 of its frame 71 is inserted into the hook groove 43, but the end of the lower limb edge 711 has a set gap with the inner wall of the hook groove 43 so as to reserve corresponding insertion space for the deformation of the photovoltaic module 7.

[0044] Working principle: The hook piece 4 is fixed to the side of the main pressure block 2 by the first screw 6, the first screw hole 44, and the second screw hole 25. The upper end face of the main body 41 and the lower end face of the stop part 23 of the main pressure block 2 are in contact, so that the position of the hook piece 4 is fixed and will not rotate along the center of the screw hole, thus preventing positional displacement. After the head end of the first screw 6 passes through the side wall of the main pressure block 2, it tightly abuts against the side of the rolled edge 12. The other side of the rolled edge 12 is pressed against the side of the groove 21 away from the hook piece 4. At this time, both sides of the rolled edge 12 perpendicular to the second direction are stopped.

[0045] The photovoltaic module 7 is supported on the corrugated structure 11 of the roof panel 1, and the main pressure block 2 is located between the long frame 71 of two adjacent photovoltaic modules 7. The horizontal edge 31 of the upper pressure block 3 is pressed onto the frame 71 of the two adjacent photovoltaic modules 7, and it is pressed into the main pressure block 2 with the second screw 5; as the second screw 5 is screwed into the lower depth, the main pressure block 2 tightens upward, and finally the hook part 22 on the main pressure block 2 is tightly pressed against the lower side of the rolled edge 12 of the lock seam; the photovoltaic module 7 is fixed together with the corrugated structure 11 of the roof by the main pressure block 2 and the upper pressure block 3, and the corrugated structure 11 bears the weight transmitted by the photovoltaic module 7.

[0046] After the photovoltaic module 7 is fixed, the lower limb edges 711 of two adjacent photovoltaic modules 7 are positioned between the two hooks 42. When the photovoltaic module 7 deforms due to wind load, the middle part of the photovoltaic module 7 bulges, causing the frame edges 71 at both ends to move closer to the center of the photovoltaic module 7. At this time, the lower limb edges 711 of the long frame edge 71 abut against the hook groove 43 of the hook piece 4, preventing the photovoltaic module 7 from deforming further and preventing further deformation and damage to the photovoltaic module 7.

[0047] This embodiment also provides a standing seam roofing system, including the photovoltaic connection structure described above. The roofing system further includes a plurality of roof panels 1 arranged sequentially along a second direction. The ends of adjacent roof panels 1 are bent along the second direction to form a corrugated structure 11, and the top of the corrugated structure 11 has a rolled edge 12. Above the roof panels 1 are a plurality of photovoltaic modules 7 arranged sequentially along a first direction. The photovoltaic modules 7 have downwardly extending frame edges 71 at both ends along the first direction, and the lower end of the frame edges 71 has a lower leg edge 711 extending along the first direction toward the center of the photovoltaic module 7. The main pressure block 2 is supported on the upper end of the corrugated structure 11, and the ends of two adjacent photovoltaic modules 7 are pressed between the horizontal leg edge 31 and the corrugated structure 11.

[0048] In this embodiment, the bending of the roof panel forms a corrugated structure, which vertically supports the photovoltaic modules, creating a gap between the photovoltaic modules and the main structure of the metal roof panel to reduce heat transfer. This arrangement eliminates the need for additional support structures on top of the metal roof panel, reducing construction costs. The main pressure block, upper pressure block, and hook plate in this embodiment are compatible with most standing seam metal roof panels on the market, and the simple installation method also reduces the construction cost of the photovoltaic modules.

[0049] The above specific embodiments should not be construed as limiting the scope of protection of this utility model. For those skilled in the art, any alternative improvements or modifications made to the embodiments of this utility model shall fall within the scope of protection of this utility model.

[0050] Any aspects of this utility model not described in detail are known to those skilled in the art.

Claims

1. A photovoltaic connection structure for a standing seam roof, characterized in that, include: The main pressure block has a groove extending through itself in a first direction at its lower part. The groove extends through the lower end face of the main pressure block, and a hook portion extending towards the center of the groove in a second direction is located on the side of the lower end of the groove. The first direction is perpendicular to the second direction, and the main pressure block can be slidably connected to and fixed to the rolled edge of the roof panel through the groove. The upper pressure block is detachably fixed to the upper end of the main pressure block. The upper pressure block has horizontal limbs that bulge outward in the first direction at both ends. The horizontal limbs are used to press the frame of the photovoltaic module on the roof at the end in the first direction. A hook plate is fixed to one side of the main pressure block perpendicular to the second direction. The hook plate is parallel to the first direction. The hook plate includes a main body and hook bodies located at both ends of the main body along the first direction. The hook bodies are bent upward and along the first direction toward the center of the hook plate. The hook bodies are used to stop the lower edge of the frame in the photovoltaic module.

2. The photovoltaic connection structure for a standing seam roof according to claim 1, characterized in that, The main pressure block has a stop portion on the side for fixing the hook piece. The lower end face of the stop portion abuts against the upper end face of the main body. The lower end face of the stop portion is parallel to the first direction and the second direction.

3. The photovoltaic connection structure for a standing seam roof according to claim 2, characterized in that, The distance between the two hooks along the first direction is L1, the length of the main pressing block along the first direction is L2, and the length between the lower limb side and the frame of the photovoltaic module is L3, where 2L3+L2 <L1。 4. The photovoltaic connection structure for a standing seam roof according to any one of claims 1-3, characterized in that, The hook plate has a first screw hole that penetrates itself along the second direction, and the side of the main pressure block that fixes the hook plate has a second screw hole that communicates with the slide groove along the second direction. The first screw hole and the second screw hole are coaxial and are fixed together by a first screw.

5. The photovoltaic connection structure for a standing seam roof according to claim 4, characterized in that, The second screw hole is located on the side of the main pressure block away from the hook portion, the first screw hole is located at the center of the main body portion along the first direction, and the second screw hole is located at the center of the main pressure block along the first direction.

6. The photovoltaic connection structure for a standing seam roof according to claim 5, characterized in that, The upper pressure block has a third screw hole that penetrates vertically through itself, and the main pressure block has a fourth screw hole that penetrates vertically through itself. The third and fourth screw holes are aligned and then fixed by a second screw.

7. The photovoltaic connection structure for a standing seam roof according to claim 6, characterized in that, The central axes of the first screw hole, the second screw hole, the third screw hole, and the fourth screw hole are in the same vertical plane.

8. The photovoltaic connection structure for a standing seam roof according to claim 4, characterized in that, The lower end face of the stop portion is not higher than the top of the groove, and the first screw hole is higher than the hook portion.

9. The photovoltaic connection structure for a standing seam roof according to claim 1, characterized in that, The hook has an upwardly bent first part and a second part extending from the upper end of the first part toward the center of the main body, the first part, the second part and the main body forming a hook groove that can be inserted into the side of the lower limb.

10. A standing seam roofing system, characterized in that, The roof system includes the photovoltaic connection structure according to any one of claims 1-9, and further includes a plurality of roof panels arranged sequentially along a second direction, wherein the ends of adjacent roof panels are bent along the second direction to form a wave crest structure, and the top of the wave crest structure has the rolled edge. The roof panel has a plurality of photovoltaic modules arranged sequentially along a first direction above it. The photovoltaic modules have downwardly extending frame edges at both ends along the first direction, and the lower end of the frame edge has a lower leg edge extending along the first direction toward the center of the photovoltaic module. The main pressure block is supported on the upper end of the wave crest structure, and the ends of two adjacent photovoltaic modules are pressed between the horizontal leg edge and the wave crest structure.

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