Photovoltaic module demountable roof mounting system

Abstract

The utility model provides a kind of photovoltaic module dismountable roof mounting system, including I-beam, upper and lower ends thereof are equipped with upper groove and lower groove respectively;Photovoltaic module frame, its bottom is equipped with the clamping structure matched with the upper groove;Screw block fixing device, including pressing block and the limiting piece matched with the pressing block, for limiting the displacement of photovoltaic module frame relative to I-beam;Wherein, the lower groove is fixedly connected with roof by fastener, the photovoltaic module frame is embedded in the upper groove by clamping structure, the pressing block is pressed on the upper side or both sides of the photovoltaic module frame, and the clamping structure is fixed in the upper groove by the limiting piece.The utility model optimizes photovoltaic module roof mounting system, is fixed with photovoltaic module frame by screw block fixing device, and photovoltaic module frame bottom is provided with clamping structure and I-beam inlay installation, simplifies installation mode and installation is more stable, easy to maintain.

Description

Technical Field

[0001] This utility model belongs to the field of photovoltaic technology, specifically relating to a detachable rooftop installation system for photovoltaic modules. Background Technology

[0002] Traditional rooftop photovoltaic (PV) installation methods are mainly divided into two categories: direct mounting and bracket mounting. Direct mounting typically uses adhesive or bolts to fix the modules to the roof surface. While this method is simple in structure, it suffers from the drawback of irreversible installation—when the modules need repair or replacement, destructive removal is often required, resulting in damage to both the modules and the roof structure. Bracket mounting offers a degree of adjustability, but it generally suffers from complex structures and cumbersome installation procedures. Moreover, most bracket systems require drilling holes in the module frame for fixing, which not only weakens the structural strength of the frame but also increases material costs and the risk of leakage.

[0003] In industrial buildings with common corrugated steel roofs, current technologies often employ a method of directly gluing the components to the corrugated steel roof or aluminum brackets. While this method avoids perforating the roof, it presents two significant problems: first, the adhesive is prone to aging and failure when exposed to the outdoor environment for extended periods, posing a safety hazard; second, once installed, it is difficult to disassemble without damage, requiring destructive removal of the components and brackets for maintenance, increasing maintenance costs. This problem is even more pronounced for flexible and lightweight frameless photovoltaic modules. Existing TPO mounting brackets require aluminum blocks to be used on both sides of the aluminum bracket for clamping and securing with self-tapping screws, making assembly cumbersome and difficult to achieve without damage during disassembly.

[0004] Current installation technologies also pose a risk of microcracks in the modules. During installation, workers need to climb or crawl on the installed modules, which can easily lead to microcracks in the cells, severely impacting the module's output power and long-term reliability. Furthermore, traditional clamping methods create obstructions on the module surface, affecting aesthetics and causing dust accumulation, thus reducing power generation efficiency. In flat roof installations, the additional support structures added to resist wind loads often make module disassembly more difficult, creating a conflict between wind resistance stability and ease of maintenance.

[0005] To address the aforementioned technical challenges, the industry urgently needs a new type of rooftop installation structure for photovoltaic modules that can ensure installation stability while enabling convenient, non-destructive installation and removal, simplifying maintenance processes, and reducing total lifecycle costs. Utility Model Content

[0006] To address the above problems, the purpose of this utility model is to provide a detachable rooftop installation system for photovoltaic modules. Through the design of the I-beam shaft and snap-fit ​​structure, as well as the modular screw block fixing device, it effectively solves many technical defects of traditional installation methods.

[0007] The present invention achieves the aforementioned technical effect through the following technical solution:

[0008] This utility model provides a detachable rooftop installation system for photovoltaic modules, including

[0009] The I-beam shaft has an upper groove and a lower groove at its upper and lower ends, respectively.

[0010] The photovoltaic module frame has a snap-fit ​​structure at its bottom that matches the upper groove;

[0011] The screw block fixing device includes a pressure block and a limiting member that cooperates with the pressure block, used to limit the displacement of the photovoltaic module frame relative to the I-beam.

[0012] The lower groove is fixedly connected to the roof by fasteners, the photovoltaic module frame is embedded in the upper groove by a snap-fit ​​structure, the pressure block presses against the top or sides of the photovoltaic module frame, and the snap-fit ​​structure is fixed in the upper groove by the limiting member.

[0013] Preferably, the snap-fit ​​structure includes an extended side and a snap-fit ​​side at the lower end of the photovoltaic module frame, the extended side and the snap-fit ​​side forming an L-shaped or L-shaped structure. This structure enhances the fit with the groove on the I-beam, improves the stability of the connection, and may facilitate installation and disassembly.

[0014] Preferably, the upper groove of the I-beam is an axisymmetric structure; two photovoltaic modules are symmetrically embedded in the upper groove of the same I-beam. This structure optimizes space utilization, makes the modules more compact, improves roof utilization, and the symmetrical design may enhance stress uniformity and reduce stress concentration.

[0015] Preferably, the width of the snap-fit ​​edge is less than half the width of the upper groove. This increases the contact area by extending the edge, and the smaller snap-fit ​​edge width facilitates insertion and adjustment while avoiding excessive compression and maintaining structural flexibility.

[0016] Preferably, the screw fixing device includes:

[0017] Gaskets are located above and / or below the pressure block;

[0018] The pressure block is located in the middle of the gasket;

[0019] The limiting component includes a mating female screw and a sliding female screw. The threaded shaft of the female screw passes through the pressure block and the washer and is locked by the sliding female screw. The modular design of the screw block fixing device facilitates adjustment and locking. The washer is inserted into the upper groove to increase friction. The pressure block covers the washer and distributes pressure evenly. The mating of the female screw and the sliding female screw provides reliable locking and prevents displacement.

[0020] Preferably, when the screw block fixing device is used to fix the edge of the photovoltaic module, the pressure blocks are located on both sides of the photovoltaic module frame. Here, the screw block fixing device is used as an edge pressure block, and no holes are needed on the photovoltaic module frame. Using it as an edge pressure block to fix the edge provides better lateral support and prevents the module edge from warping.

[0021] Preferably, when the screw block fixing device is used to fix the connection between two photovoltaic modules, the pressure block is located above the frame of the photovoltaic module. Here, the screw block fixing device is used as a medium pressure block, and no holes are needed on the frame of the photovoltaic module. Used as a medium pressure block to connect the two modules, it evenly distributes the pressure between the two modules, enhancing overall stability.

[0022] Preferably, the gasket does not contact the photovoltaic module, and the installation height of the sliding screw is lower than that of the laminate. This arrangement avoids the gasket pressing on the module, reducing the risk of microcracks; the low position of the sliding screw makes it easier to operate during installation, while not affecting the laminate and maintaining power generation efficiency.

[0023] Preferably, the height of the pressure block is greater than or equal to the height of the photovoltaic module frame. Sufficient pressure block height can better cover the frame, provide more stable pressure, and prevent the module from moving under wind loads.

[0024] Preferably, the gasket includes an upper gasket and a lower gasket. The lower gasket is inserted into the upper groove of the I-beam shaft, and the upper gasket is positioned above the pressure block and limited by a sliding screw. The insertion of the lower gasket into the upper groove and the limitation of the upper gasket by the sliding screw enhance the connection between the gasket and the I-beam shaft, while also facilitating adjustment and replacement, thus improving maintenance convenience.

[0025] The photovoltaic module detachable roof mounting system provided by this utility model has the following significant advantages compared with the prior art:

[0026] 1. Through the design of the upper and lower grooves of the I-beam shaft, the lower groove of the I-beam shaft is fixed to the roof, and the bottom of the photovoltaic module frame is equipped with an L-shaped or L-shaped snap-fit ​​structure that cooperates with the upper groove of the I-beam shaft. It is also equipped with a screw block fixing device consisting of pressure block, gasket, female screw and sliding female screw to press and limit the position, so as to realize the convenient, reliable and detachable installation of photovoltaic modules, which greatly improves installation efficiency and maintenance flexibility.

[0027] 2. The groove on the I-beam adopts an axisymmetric structure, with two photovoltaic modules symmetrically embedded in the same I-beam, which significantly improves installation symmetry, structural stability and space utilization efficiency.

[0028] 3. The pressure blocks in the screw fixing device can be flexibly arranged above or on both sides of the photovoltaic module frame. Together with the gaskets and height-adjustable sliding male and female screws, it can adapt to various pressing and fixing requirements of the module edge or between modules, and enhance the system adaptability and clamping reliability.

[0029] In summary, the photovoltaic module rooftop installation system provided by this utility model features a snap-fit ​​structure at the bottom of the photovoltaic module frame, which is then embedded with an I-beam shaft and secured by screw blocks. This simplifies the installation process, enhances stability, and facilitates maintenance. Furthermore, this installation system eliminates the need for drilling holes in the photovoltaic module frame, extending its lifespan and reducing operating costs. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the installation of the I-beam shaft of this utility model with the roof.

[0031] Figure 2 This is a schematic diagram of the frame of the photovoltaic module with side A of this utility model.

[0032] Figure 3 This is a schematic diagram of the frame of the photovoltaic module without side A of this utility model.

[0033] Figure 4 This is a partial schematic diagram showing the installation effect of the detachable roof mounting system for photovoltaic modules when installed on both sides of the photovoltaic module frame.

[0034] Figure 5 This is a three-dimensional structural diagram of the screw block fixing device of the detachable roof mounting system for photovoltaic modules of this utility model when installed on both sides of the photovoltaic module frame.

[0035] Figure 6 This is a schematic diagram of the structure of the detachable roof mounting system for photovoltaic modules of this utility model when installed on both sides of the photovoltaic module frame.

[0036] Figure 7 This is a partial schematic diagram showing the installation effect of the detachable roof mounting system for photovoltaic modules of this utility model when installed between the frames of two photovoltaic modules.

[0037] Figure 8 This is a three-dimensional structural diagram of the screw block fixing device of the detachable roof mounting system for photovoltaic modules of this utility model when installed between the frames of two photovoltaic modules.

[0038] Figure 9 This is a schematic diagram of the structure of the detachable roof mounting system for photovoltaic modules of this utility model when installed between the frames of two photovoltaic modules.

[0039] Wherein: 1-I-shaped shaft, 11-upper groove, 12-lower groove, 2-photovoltaic module frame, 21-clamping structure, 3-screw block fixing device, 4-fastener, 5-roof, 6-photovoltaic module, 211-extension edge, 212-clamping edge, 31-lower gasket, 32-upper gasket, 33-pressure block, 34-female screw, 35-sliding female screw, 61-laminated component. Detailed Implementation

[0040] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments. It should be understood that the embodiments described herein are only some, not all, of the embodiments of this utility model, and are merely used to explain the present utility model and are not intended to limit the present utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0041] To make the technical problems solved by this utility model, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this utility model will be described in further detail below.

[0042] like Figures 1-9 As shown, this utility model provides a detachable rooftop installation system for photovoltaic modules, including an I-beam shaft 1, a photovoltaic module frame 2, and a screw block fixing device 3. Each component achieves detachable and highly stable rooftop installation through a structural design. Specifically, the detachable rooftop installation system for photovoltaic modules provided by this utility model includes an I-beam shaft 1 with an upper groove 11 and a lower groove 12 at its upper and lower ends, respectively; a photovoltaic module frame 2 with a snap-fit ​​structure 21 at its bottom that matches the upper groove 11; and a screw block fixing device 3, including a pressure block 33 and a limiting member that cooperates with the pressure block 33, used to limit the displacement of the photovoltaic module frame 2 relative to the I-beam shaft 1; wherein, the lower groove 12 is fixedly connected to the roof 5 by fasteners 4, and the photovoltaic module frame 2 is embedded in the upper groove 11 through the snap-fit ​​structure 21 and locked by the screw block fixing device 3. Specifically, the I-beam 1 can be a long strip structure made of aluminum alloy, with an upper groove 11 and a lower groove 12 at its upper and lower ends, respectively. The upper groove 11 is axially symmetrical and is used to snap onto the photovoltaic module frame 2. The lower groove 12 is a rectangular groove that is fixedly connected to the roof 5 base layer (such as a concrete slab or color steel tile) by stainless steel bolts. After the bolts pass through the through hole at the bottom of the lower groove 12, they are tightened with the embedded parts of the roof 5 to ensure a reliable connection between the I-beam 1 and the roof 5.

[0043] The detachable rooftop installation system for photovoltaic modules provided by this utility model is applicable to various photovoltaic module frames. It can be applied to photovoltaic module frames with an A-side or without an A-side, especially to photovoltaic module frames without an A-side, and is suitable for full-screen photovoltaic modules.

[0044] Specifically, the photovoltaic module frame 2 can be made of extruded aluminum alloy, and its bottom is provided with a snap-fit ​​structure 21. Further, the snap-fit ​​structure 21 includes an extension edge 211 and a snap-fit ​​edge 212 at the lower end of the photovoltaic module frame, and the extension edge 211 and the snap-fit ​​edge 212 form an L-shaped or L-shaped structure. The thickness of the snap-fit ​​edge 212 matches the trapezoidal slope of the groove 11 on the I-beam 1, so that the photovoltaic module frame 2 can be horizontally inserted into one end of the upper groove 11 through the L-shaped snap-fit ​​structure 21. After insertion, the extension edge 211 fits against the side of the upper groove 11, and the snap-fit ​​edge 212 is snapped into the bottom of the upper groove 11, forming a double limit in both the horizontal and vertical directions.

[0045] In some specific embodiments, the screw fixing device 3 includes a lower washer 31, an upper washer 32, a pressure block 33, a female screw 34, and a sliding female screw 35. The lower washer 31 is inserted between the two inclined surfaces of the upper groove 11 and fits tightly against the upper groove 11; the upper washer 32 is stacked on top of the lower washer 31; the pressure block 33 can be an aluminum alloy plate, which is installed on both sides of the photovoltaic module frame 2 when used as an edge pressure block, with the vertical side of the pressure block 33 contacting the side of the photovoltaic module frame 2; when used as a middle pressure block, it is installed between the top surfaces of two adjacent photovoltaic module frames 2. The female screw 34 can be a stainless steel screw, with its screw shaft passing through the lower washer 31, the pressure block 33, and the upper washer 32 in sequence, and its end engaging with the sliding female screw 35, with the internal thread of the sliding female screw 35 engaging with the external thread of the female screw 34.

[0046] During installation, first, use stainless steel bolts to secure the I-beam 1 to the roof 5 base layer by inserting them into the lower groove 12, ensuring the I-beam 1 is horizontal or adjusting its angle according to the slope of the roof 5. Then, horizontally push the L-shaped snap-fit ​​structure 21 of the photovoltaic module frame 2 into one end of the upper groove 11 of the I-beam 1 until the snap-fit ​​edge 212 is fully engaged in the upper groove 11. By controlling the width of the snap-fit ​​edge to be less than half the width of the upper groove, smooth module engagement and disassembly can be ensured, avoiding interference and facilitating installation, adjustment, and future replacement. Next, select the pressure block 33 according to the position of the photovoltaic module 6. For the edge of the photovoltaic module 6, place the pressure block 33 on both sides of the frame so that the vertical side of the pressure block 33 is close to the frame. The lower washer 31 is inserted into the upper groove 11 of the I-beam 1 and contacts the bottom surface of the pressure block 33. For adjacent photovoltaic modules 6, place the pressure block 33 in the gap between the two photovoltaic module frames 2. The lower washer 31 is inserted into the upper groove 11 and the pressure block 33 is placed on the upper surface of the photovoltaic module frame 2. Finally, pass the female screw 34 through the pressure block 33, the washer and the I-beam 1, and tighten the sliding female screw 35. At this time, the photovoltaic module frame 2 is firmly fixed on the I-beam 1.

[0047] For photovoltaic modules without an A-side frame, when it is necessary to disassemble or replace the photovoltaic module 6, simply rotate the sliding screw 35 in the opposite direction to loosen the female screw 34, remove the pressure block 33 and the upper and lower washers, and then gently push the photovoltaic module 6 out from the horizontal other end of the groove 11 on the I-beam 1, achieving non-destructive disassembly. If it is necessary to adjust the module angle or replace the damaged I-beam 1, simply loosen the roof bolts 5 and reinstall it, without damaging the module frame or the laminate 61. This structure uses the upper and lower grooves of the I-beam 1 to cooperate with the L-shaped snap-fit ​​structure 21 of the photovoltaic module frame 2, the pressure of the screw fixing device 3 is evenly distributed to prevent frame deformation, and the low-position design of the sliding screw 35 prevents damage to the laminate 61, ultimately achieving rapid disassembly and assembly, long-term stability, and efficient power generation of the roof photovoltaic system. In some specific embodiments, by optimizing the design of the pressure block height not being lower than the frame and the sliding screw installation height being lower than the laminate, effective clamping can be achieved while avoiding contact with the photovoltaic laminate, reducing stress concentration and potential damage risks, and improving the overall structural safety.

[0048] More specifically, the detachable rooftop mounting system for photovoltaic modules of this invention is implemented through the following steps: First, the lower groove 12 of the I-beam 1 is anchored to the pre-installed position on the roof 5 using fastening bolts. Specifically, the tilt angle can be adjusted to 3°-5° to optimize self-cleaning. The groove width of the upper groove 11 of the I-beam 1 is W1. Then, the snap-fit ​​structure 21 at the bottom of the photovoltaic module frame 2 is horizontally pushed into the upper groove 11. This snap-fit ​​structure consists of the extended edge 211 at the lower end of the outer frame and the vertically bent snap-fit ​​edge 212. The snap-fit ​​edge 212... The width is W2, W2<0.5W1, and the snap-fit ​​structure 21 matches the inner wall of the I-beam shaft 1. When two components are symmetrically embedded in the same I-beam shaft 1, they are locked by the screw block fixing device 3. When used as an edge pressure block, the lower pad 31 is snapped into the upper groove 11, and the pressure block 33 is a tall and narrow pressure block. The tall and narrow pressure block is attached to both sides of the photovoltaic module frame 2. The screw shaft of the female screw 34 passes through the lower pad 31 and the pressure block 33 and is locked by the sliding female screw 35. When used as a middle pressure block, the pressure block 33 is a wide and flat pressure block. The pressure block 33 covers the adjacent photovoltaic module frame 2.

[0049] The present invention has been further described above with reference to specific embodiments. However, it should be understood that the specific description herein should not be construed as limiting the substance and scope of the present invention. Various modifications made by those skilled in the art to the above embodiments after reading this specification are all within the scope of protection of the present invention.

Claims

1. A detachable rooftop installation system for photovoltaic modules, characterized in that, include The I-beam shaft has an upper groove and a lower groove at its upper and lower ends, respectively. The photovoltaic module frame has a snap-fit ​​structure at its bottom that matches the upper groove; The screw block fixing device includes a pressure block and a limiting member that cooperates with the pressure block, used to limit the displacement of the photovoltaic module frame relative to the I-beam. The lower groove is fixedly connected to the roof by fasteners, the photovoltaic module frame is embedded in the upper groove by a snap-fit ​​structure, the pressure block presses against the top or sides of the photovoltaic module frame, and the snap-fit ​​structure is fixed in the upper groove by the limiting member.

2. The detachable rooftop photovoltaic module installation system according to claim 1, characterized in that, The snap-fit ​​structure includes an extension side and a snap-fit ​​side at the lower end of the photovoltaic module frame, and the extension side and the snap-fit ​​side form an L-shaped or L-shaped structure.

3. The detachable rooftop photovoltaic module installation system according to claim 1, characterized in that, The upper groove of the I-beam shaft is an axisymmetric structure; two photovoltaic modules are symmetrically embedded in the upper groove of the same I-beam shaft.

4. The detachable rooftop photovoltaic module installation system according to claim 2, characterized in that, The width of the snap-fit ​​edge is less than half the width of the upper groove.

5. The detachable rooftop photovoltaic module installation system according to claim 1, characterized in that, The screw block fixing device includes: Gaskets are located above and / or below the pressure block; The pressure block is located in the middle of the gasket; The limiting component includes a mating female screw and a sliding female screw, the thread of which passes through the pressure block and the washer and is locked by the sliding female screw.

6. The detachable rooftop photovoltaic module installation system according to claim 5, characterized in that, When the screw block fixing device is used to fix the edge of the photovoltaic module, the pressure block is located on both sides of the photovoltaic module frame.

7. The detachable rooftop photovoltaic module installation system according to claim 5, characterized in that, When the screw block fixing device is used to fix the connection between two photovoltaic modules, the pressure block is located above the frame of the photovoltaic module.

8. The detachable rooftop photovoltaic module installation system according to claim 6, characterized in that, The gasket has no contact with the photovoltaic module, and the installation height of the sliding screw is lower than that of the laminate.

9. The detachable rooftop photovoltaic module installation system according to claim 6, characterized in that, The height of the pressure block is greater than or equal to the height of the photovoltaic module frame.

10. The detachable rooftop photovoltaic module installation system according to claim 5, characterized in that, The gasket includes an upper gasket and a lower gasket. The lower gasket is inserted into the upper groove of the I-beam shaft, and the upper gasket is placed above the pressure block and limited by a sliding screw.

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