Fabricated photovoltaic roof system suitable for photovoltaic building integration and installation method of fabricated photovoltaic roof system

Abstract

The invention provides a fabricated photovoltaic roof system suitable for photovoltaic building integration. The fabricated photovoltaic roof system comprises a photovoltaic panel, a pressing block, a pressing block bolt, a lock clamp, a lock clamp bolt, a roof panel and a supporting bracket, the photovoltaic panel is arranged at a preset position of the roof panel and is stably connected through a double fixing mode of the pressing block and the lock clamp. The pressing block bolt penetrates through the pressing block to be matched with the lock clamp, so that the position of the pressing block can be adjusted and fixed, and the photovoltaic panel is convenient to mount and dismount; the roof panel is provided with a middle wave crest and a side wave crest which are fixedly connected with the roof panel middle support and the side support respectively, and stability is enhanced through welding. The supports are all made of stainless steel materials, and a reliable installation foundation is provided. The photovoltaic module is combined with the roof structure, and the roof space is fully utilized for green energy production; due to the assembly type structural design, the system is convenient to install, good in overall stability and high in durability; the adjustability of the pressing block bolt ensures the stability of the photovoltaic panel and is easy to maintain and replace, and a new solution is provided for photovoltaic building integration.

Description

Technical Field

[0001] The present invention relates to the field of green environmental protection buildings, in particular to a photovoltaic roof system, and specifically to a prefabricated photovoltaic roof system suitable for building-integrated photovoltaics and an installation method thereof. Background Art

[0002] BIPV, that is, Building Integrated Photovoltaic, means "building-integrated photovoltaic power generation". It is a technology that integrates solar power generation (photovoltaic) products into buildings. Different from traditional photovoltaic systems that are attached to buildings as independent individuals, BIPV emphasizes the integration of photovoltaic modules and buildings, making the photovoltaic modules an inseparable part of the building, such as roofs, exterior walls or shading systems, and at the same time having the functions of power generation, building components and building materials.

[0003] In order to obtain better lighting conditions, the components of BIPV are usually set on the sunny side of the building, such as the roof panel (i.e., the roof). However, there are still several problems in the current processing technology of combining photovoltaic modules and roof panels (i.e., roofs) in BIPV: 1. Due to the different service lives between the building roof and the photovoltaic modules, the use cost of the entire roof system increases and is wasted. For example, the building roof may age. If the roof life is less than 25 years (i.e., less than the photovoltaic power generation life), then during the renovation, disassembly and installation of the roof, the photovoltaic system will undoubtedly be modified, which will greatly extend the investment recovery period of the photovoltaic system.

[0004] 2. Since the photovoltaic modules are combined with the building roof, if the roof is coated later, the contamination and coverage of the coating may affect the service life of the photovoltaic modules. In some cases, the photovoltaic modules contaminated with the coating are more vulnerable to the damage of the humid environment, especially in coastal areas.

[0005] 3. When the current photovoltaic modules are combined with the roof system, the roof panel and the support of the photovoltaic system mostly adopt a mechanical bite form to achieve, and the wind resistance performance of this connection method is poor. For example, a large negative wind pressure generated by natural factors such as typhoons will damage the bite interface between the roof panel and the photovoltaic system. Summary of the Invention

[0006] The purpose of the present invention is to overcome the above defects and propose a prefabricated photovoltaic roof system suitable for building-integrated photovoltaics and an installation method thereof, which have more reliable structural strength and sealing performance, are more convenient to install, and are easy to maintain and replace.

[0007] To achieve the above purpose, the present invention is implemented as follows: A prefabricated photovoltaic roof system suitable for building-integrated photovoltaics, comprising: Photovoltaic panel 1, arranged at a predetermined position of roof panel 6; A pressing block 2, used for fixing the photovoltaic panel 1; The pressing block bolt 3 passes through the pressing block 2 and cooperates with the locking clamp 4 to adjust and fix the position of the pressing block 2; The locking clip 4 is arranged on the roof panel side bracket 7 and cooperates with the pressing block bolt 3 to fix the pressing block 2; The locking clamp bolt 5 is used to fix the locking clamp 4 to the roof panel edge bracket 7; The roof panel 6 has a middle crest and side crests, the middle crest is connected to the middle bracket 8 of the roof panel by a buckle, and the side crest is fixed and welded to the side bracket 7 of the roof panel; The roof panel side bracket 7 and the roof panel middle bracket 8 are both made of stainless steel material, which are used to support the roof panel 6 and provide an installation basis; wherein, the photovoltaic panel 1 is firmly fixed on the roof panel 6 by a dual fixing method of a pressing block 2 and a locking clamp 4, and the pressing block bolt 3 can be adjusted in tightness to ensure the stability of the photovoltaic panel 1 and facilitate disassembly and replacement.

[0008] The assembled photovoltaic roof system suitable for photovoltaic building integration is characterized in that the joints between the roof panel 6 and the roof panel edge bracket 7 are welded, and the male and female ribs on the top are curled after welding to enhance the stability and waterproof performance of the structure.

[0009] The assembled photovoltaic roof system suitable for photovoltaic building integration, the design of the pressing block 2 and the locking clamp 4 allows the photovoltaic panel 1 to have a certain adjustment space during installation to accommodate photovoltaic panels 1 of different sizes or shapes.

[0010] The above-mentioned assembled photovoltaic roof system suitable for photovoltaic building integration also includes sealing materials for protecting the edges and joints of the photovoltaic panels 1 to enhance the waterproof and sealing performance of the system.

[0011] Furthermore, the structural strength of the assembled photovoltaic roof system suitable for photovoltaic building integration, the roof panel 6, the roof panel side bracket 7 and the roof panel middle bracket 8 are checked by the following formula: For a simply supported beam structural component bearing a uniformly distributed load, the maximum bending moment M max The calculation formula is: Where q is the uniformly distributed load and L is the length of the beam; The bending section modulus S and yield strength σ of the material used y Check to meet the following conditions: Where σ is the calculated stress, S is the bending section modulus, and σ y is the yield strength of the material.

[0012] Furthermore, for the prefabricated photovoltaic roofing system suitable for building - integrated photovoltaics, the mechanical properties of the pressing block 2 and the locking clip 4 are analyzed in the following ways: Calculate the required pre - tightening force F of the bolt pre , to ensure that the pressing block 2 does not loosen. The calculation of the pre - tightening force needs to consider factors such as the bolt specifications, materials, and friction coefficient; use the shear stress formula: Check the shear strength of the pressing block 2 and the locking clip 4, where F is the force acting on the shear plane, A is the area of the shear plane, and τ allow is the allowable shear stress; Use the bearing stress formula: Check the bearing strength of the pressing block 2 and the locking clip 4, where F is the force acting on the bearing plane, A bs is the area of the bearing plane, and σ bs,allow is the allowable bearing stress.

[0013] For the above - mentioned prefabricated photovoltaic roofing system suitable for building - integrated photovoltaics, the structural strength check and mechanical property analysis are carried out in the system design stage to ensure the safety and reliability of the system.

[0014] For the above - mentioned prefabricated photovoltaic roofing system suitable for building - integrated photovoltaics, the welded joints of the roofing panel 6 and the roofing panel side bracket 7 are subjected to quality inspection to ensure that the strength of the welded joints meets the design requirements.

[0015] Furthermore, the present invention also proposes an installation method for the above - mentioned prefabricated photovoltaic roofing system, including the following steps: a) Prepare and fix the roofing panel side bracket 7 and the roofing panel middle bracket 8 at the predetermined positions; b) Fix the middle wave peak of the roofing panel 6 to the roofing panel middle bracket 8 through a buckle, and fix the side wave peak to the roofing panel side bracket 7; c) Weld the joint between the roofing panel 6 and the roofing panel side bracket 7, and perform a curling treatment on the top male and female ribs; d) Place the photovoltaic panel 1 at the predetermined position, and use the pressing block 2 to preliminarily fix it through the locking clip 4 and the pressing block bolt 3; e) Adjust the tightness of the pressing block bolt 3 to ensure that the photovoltaic panel 1 is firmly fixed and convenient for future disassembly and replacement; f) Add sealing materials at the required positions to enhance the waterproof and sealing performance of the system.

[0016] For the above - mentioned installation method, during the installation process, the structural strengths of the roofing panel 6, the roofing panel side bracket 7, and the roofing panel middle bracket 8 are monitored in real - time to ensure the structural safety during the installation process; after the installation is completed, a comprehensive structural strength check and mechanical property test are carried out on the photovoltaic roofing system to verify the safety and reliability of the system.

[0017] The above-mentioned prefabricated photovoltaic roofing system suitable for building-integrated photovoltaics and its installation method proposed by the present invention have the following advantages and characteristics compared with the existing photovoltaic roofing systems: 1. Structural stability and reliability: This photovoltaic roofing system uses high-rib welded stainless steel materials, enhancing the structural strength of the roofing panels and brackets, making the entire system more stable and reliable.

[0018] Through the dual fixation method of pressure blocks and locking clips, it ensures the firm installation of the photovoltaic panels on the roof, and can maintain stable performance even in the face of adverse weather conditions.

[0019] 2. Installation convenience and maintainability: The system design takes into account the convenience of installation. The connection method between the roofing panels and brackets is simple and effective, reducing the installation time and cost.

[0020] The design of the pressure block bolts allows adjustment of the tightness, making the installation and disassembly of the photovoltaic panels more convenient and fast, facilitating future maintenance and replacement.

[0021] 3. Waterproof and sealing performance: The joint between the roofing panel and the bracket is welded, and the top male and female ribs are curled, effectively enhancing the waterproof performance of the structure.

[0022] The system also includes sealing materials for protecting the edges and joints of the photovoltaic panels, further improving the sealing performance of the system and preventing moisture penetration.

[0023] 4. Structural strength calculation and mechanical analysis: Detailed structural strength calculations have been carried out on key structural components such as roofing panels and brackets to ensure that the system can withstand the action of expected loads and external factors such as wind force.

[0024] Mechanical analysis has been carried out on the pressure blocks and locking clips, including the checking of shear strength and extrusion strength, ensuring their stability and safety during the process of fixing the photovoltaic panels.

[0025] 5. Material selection and corrosion resistance: The roofing panels and brackets are made of stainless steel materials, which have good corrosion resistance and extend the service life of the system.

[0026] The stainless steel material also has good strength and toughness, enabling the system to better maintain its integrity when facing external force impacts.

[0027] 6. Systematized and modular design: The entire photovoltaic roofing system is designed into a systematized and modular structure, facilitating customization and expansion according to the needs of different projects.

[0028] The modular design also makes the system more efficient and convenient during production, transportation, and installation, reducing the overall cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic structural diagram of the prefabricated photovoltaic roof system shown in the present invention.

[0030] Figure 2 It is a schematic diagram of the installation process of the prefabricated photovoltaic roof system shown in the present invention Figure 1 .

[0031] Figure 3 It is a schematic diagram of the installation process of the prefabricated photovoltaic roof system shown in the present invention Figure 2 .

[0032] Figure 4 It is a schematic diagram for calculation and verification during the installation process of the prefabricated photovoltaic roof system shown in the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] Next, the technical solutions of the embodiments of the present application will be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts belong to the scope claimed by the present application.

[0034] Embodiment 1 As Figure 1 shown, a prefabricated photovoltaic roof system suitable for building-integrated photovoltaics includes: Photovoltaic panel 1, arranged at a predetermined position on roof panel 6; Pressing block 2, used to fix photovoltaic panel 1; Pressing block bolt 3, passing through pressing block 2 and cooperating with locking clip 4 to adjust and fix the position of pressing block 2; Locking clip 4, arranged on roof panel side bracket 7, cooperating with pressing block bolt 3 to fix pressing block 2; Locking clip bolt 5, used to fix locking clip 4 on roof panel side bracket 7; Roof panel 6, having a middle wave peak and side wave peaks, the middle wave peak is connected to the roof panel middle bracket 8 through a buckle, and the side wave peaks are fixed and welded to the roof panel side bracket 7; Roof panel side bracket 7 and roof panel middle bracket 8 are both made of stainless steel materials, used to support roof panel 6 and provide an installation foundation; among them, photovoltaic panel 1 is firmly fixed on roof panel 6 through the double fixation method of pressing block 2 and locking clip 4, and pressing block bolt 3 can adjust the tightness to ensure the stability of photovoltaic panel 1 and facilitate disassembly and replacement.

[0035] For the above-mentioned prefabricated photovoltaic roofing system suitable for building-integrated photovoltaics, the joint between the roofing panel 6 and the side bracket 7 of the roofing panel is welded, and after welding, the top male and female ribs are curled to enhance the structural stability and waterproof performance.

[0036] For the above-mentioned prefabricated photovoltaic roofing system suitable for building-integrated photovoltaics, the design of the pressing block 2 and the locking clip 4 allows a certain adjustment space for the photovoltaic panel 1 during installation to adapt to photovoltaic panels 1 of different sizes or shapes.

[0037] The above-mentioned prefabricated photovoltaic roofing system suitable for building-integrated photovoltaics further includes a sealing material for protecting the edges and joints of the photovoltaic panel 1 to enhance the waterproof and sealing performance of the system.

[0038] As can be seen from the above-mentioned Embodiment 1, the photovoltaic roofing system proposed by the present invention has been innovated and optimized in the structural design of the photovoltaic roofing. Specifically, this system combines photovoltaic modules with the roofing structure, not only making full use of the roofing space for green energy production, but also ensuring the overall stability and durability of the roofing through the prefabricated structural design.

[0039] Furthermore, as can be known from the above-mentioned Embodiment 1, the advantages of the photovoltaic roofing system of the present invention in terms of structure are also reflected in the following aspects: 1. Integrated design: The photovoltaic modules are closely integrated with the roofing structure to form a unified whole, avoiding potential water leakage risks between the photovoltaic brackets and the roofing in traditional roofing systems and improving the waterproof performance of the roofing.

[0040] 2. Lightweight construction: Lightweight and high-strength materials are used to make the photovoltaic modules and the roofing structure, reducing the load on the roofing, making the system more suitable for various building types, especially light steel structure buildings, and reducing the construction cost.

[0041] 3. Improved aesthetics: As part of the roofing, the appearance design of the photovoltaic modules is coordinated with the overall architectural style, enhancing the aesthetics and modern sense of the building and meeting people's pursuit of architectural aesthetics.

[0042] 4. Easy installation and maintenance: The structural design takes into account the convenience of installation and subsequent maintenance, making the installation process of the photovoltaic roofing system more simplified, reducing the maintenance cost, and improving the usability and economy of the system.

[0043] Embodiment 2 Embodiment 2 is a construction method of a prefabricated photovoltaic roofing system suitable for building-integrated photovoltaics given by the present invention based on Embodiment 1, which specifically includes: a) Prepare and fix the roof panel side bracket 7 and the roof panel middle bracket 8 at the predetermined position; b) Fix the middle wave peak of the roof panel 6 to the roof panel middle bracket 8 by snapping, and fix the side wave peak to the roof panel side bracket 7; c) Weld the joint between the roof panel 6 and the roof panel side bracket 7, and curl the top male and female ribs; d) Place the photovoltaic panel 1 at the predetermined position, and use the pressing block 2 to perform preliminary fixation through the locking clamp 4 and the pressing block bolt 3; e) Adjust the tightness of the pressing block bolt 3 to ensure that the photovoltaic panel 1 is firmly fixed and easy to disassemble and replace in the future; f) Add sealing materials at the required position to enhance the waterproof and sealing performance of the system.

[0044] Furthermore, the above-mentioned construction method of the assembled photovoltaic roof system suitable for photovoltaic building integration also includes several strength verification steps, which are as follows: The structural strength of the roof panel 6, the roof panel side bracket 7 and the roof panel middle bracket 8 is checked by the following formula: For a simply supported beam structural component subjected to uniformly distributed load, the maximum bending moment M max The calculation formula is: Where q is the uniformly distributed load and L is the length of the beam; The bending section modulus S and yield strength σ of the material used y Check to meet the following conditions: Where σ is the calculated stress, S is the bending section modulus, and σ y is the yield strength of the material.

[0045] Furthermore, in the above-mentioned assembled photovoltaic roof system suitable for photovoltaic building integration and its construction method, it is also necessary to analyze the mechanical properties of the pressing block 2 and the locking clip 4 in the following manner: Calculate the required preload force F of the bolt pre To ensure that the pressure block 2 will not loosen, the calculation of the preload force needs to take into account the specifications, materials and friction coefficient of the bolts; use the shear stress formula: Check the shear strength of the pressure block 2 and the lock clamp 4, where F is the force acting on the shear surface, A is the area of ​​the shear surface, and τ allow is the allowable shear stress; Using the extrusion stress formula: Check the extrusion strength of the pressure block 2 and the lock clamp 4, where F is the force acting on the extrusion surface, A bs is the area of ​​the extrusion surface, σ bs,allow is the allowable extrusion stress.

[0046] Furthermore, in the above construction method of the prefabricated photovoltaic roofing system suitable for building-integrated photovoltaics, the structural strength check and mechanical property analysis are carried out in the system design stage to ensure the safety and reliability of the system.

[0047] Furthermore, in the above construction method of the prefabricated photovoltaic roofing system suitable for building-integrated photovoltaics, the welded joints of the roof panel 6 and the roof panel side bracket 7 are subject to quality inspection to ensure that the strength of the welded joints meets the design requirements.

[0048] Finally, during the installation process, the structural strength of the roof panel 6, the roof panel side bracket 7 and the roof panel middle bracket 8 is monitored in real time to ensure the structural safety during the installation process; after the installation is completed, a comprehensive structural strength check and mechanical property test are carried out on the photovoltaic roofing system to verify the safety and reliability of the system.

[0049] As can be seen from the above Embodiment 2, the prefabricated photovoltaic roofing system suitable for building-integrated photovoltaics and its installation method proposed by the present invention closely combine the actual operation with the strength and mechanical check calculation during the implementation process, providing strong support for the installation and quality guarantee of the photovoltaic roofing system. Specifically: In terms of the construction method, this method embodies the characteristics of high efficiency and environmental protection; by adopting a modular or prefabricated design, the installation steps are simplified, making the on-site installation more efficient and fast, shortening the construction period and reducing the labor cost. Secondly, the construction method mainly adopts an assembly process, which has the characteristics of low energy consumption and low emissions, reducing environmental pollution and energy consumption during the construction process.

[0050] In terms of the strength and mechanical check calculation, this method embodies the characteristics of scientific accuracy, strong generality and easy calculation; the check formula of this method is based on mechanical principles and actual engineering experience, with scientificity and accuracy, and can accurately predict the stress state and deformation of the photovoltaic roofing system under different loads; and it has a certain generality. At the same time, the above calculation formula given by the present invention has a certain ease of use, such as Figure 4 , the check process of the present invention can be realized by EXCEL formula for automatic and rapid verification, thereby further reducing the work intensity of construction personnel and designers.

[0051] To sum up, the present invention combines the construction method with the check calculation to ensure the installation quality and performance of the photovoltaic roofing system. The systematic construction method provides accurate basic data for the check calculation, making the check result more reliable; while the scientific and accurate check calculation provides strong technical support for the construction method, ensuring the safety and stability during the construction process. At the same time, the environmentally friendly and energy-saving construction method and the easy-to-calculate check formula also jointly promote the realization of the concepts of green building and sustainable development.

[0052] The above are only the embodiments provided by this application and are not used to limit this application. Although this application has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. However, any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of this application shall be included within the protection scope of this application.

Claims

1. An assembled photovoltaic roof system suitable for photovoltaic building integration, characterized in that: include: A photovoltaic panel (1) is arranged at a predetermined position of the roof panel (6); A pressing block (2) for fixing the photovoltaic panel (1); A pressing block bolt (3) passes through the pressing block (2) and cooperates with the locking clamp (4) to adjust and fix the position of the pressing block (2); A locking clip (4) is arranged on the roof panel side bracket (7) and cooperates with the pressing block bolt (3) to fix the pressing block (2); A locking clamp bolt (5) for fixing the locking clamp (4) to the roof panel edge bracket (7); The roof panel (6) has a middle wave crest and side wave crests, the middle wave crest is connected to the middle bracket (8) of the roof panel via a buckle, and the side wave crest is fixed and welded to the side bracket (7) of the roof panel; The roof panel side bracket (7) and the roof panel middle bracket (8) are both made of stainless steel material, and are used to support the roof panel (6) and provide an installation foundation; wherein the photovoltaic panel (1) is firmly fixed on the roof panel (6) by a dual fixing method of a pressure block (2) and a locking clamp (4), and the pressure block bolt (3) can be adjusted in tightness to ensure the stability of the photovoltaic panel (1) and facilitate disassembly and replacement.

2. The assembled photovoltaic roof system suitable for photovoltaic building integration according to claim 1 is characterized in that: The joint between the roof panel (6) and the roof panel edge bracket (7) is welded, and after welding, the male and female ribs on the top are curled to enhance the stability and waterproof performance of the structure.

3. The assembled photovoltaic roof system suitable for photovoltaic building integration according to claim 1 is characterized in that: The design of the pressing block (2) and the locking clamp (4) allows the photovoltaic panel (1) to have a certain adjustment space during installation, so as to accommodate photovoltaic panels (1) of different sizes or shapes.

4. The assembled photovoltaic roof system suitable for photovoltaic building integration according to any one of claims 1 to 3, characterized in that: It also includes sealing materials for protecting the edges and joints of the photovoltaic panel (1) to enhance the waterproof and sealing performance of the system.

5. The assembled photovoltaic roof system suitable for photovoltaic building integration according to claim 1, characterized in that: The structural strength of the roof panel (6), the roof panel side bracket (7) and the roof panel middle bracket (8) is checked by the following formula: For a simply supported beam structural component bearing a uniformly distributed load, the maximum bending moment M max The calculation formula is: Where q is the uniformly distributed load and L is the length of the beam; The bending section modulus S and yield strength σ of the material used y Check to meet the following conditions: Where σ is the calculated stress, S is the bending section modulus, and σ y is the yield strength of the material.

6. The assembled photovoltaic roof system suitable for photovoltaic building integration according to claim 1, characterized in that: The mechanical properties of the pressing block (2) and the locking clamp (4) are analyzed in the following manner: Calculate the required preload force F of the bolt pre To ensure that the pressure block (2) does not loosen, the calculation of the preload force needs to take into account the specifications, materials and friction coefficient of the bolts; Using the shear stress formula: Check the shear strength of the pressure block (2) and the locking clamp (4), where F is the force acting on the shear surface, A is the area of ​​the shear surface, and τ allow is the allowable shear stress; Using the extrusion stress formula: Check the extrusion strength of the pressure block (2) and the locking clamp (4), where F is the force acting on the extrusion surface, A is bs is the area of ​​the extrusion surface, σ bs,allow is the allowable extrusion stress.

7. The assembled photovoltaic roof system suitable for photovoltaic building integration according to claim 5 or 6, characterized in that: The structural strength verification and mechanical performance analysis are carried out during the system design phase to ensure the safety and reliability of the system.

8. The assembled photovoltaic roof system suitable for photovoltaic building integration according to claim 1, characterized in that: The welded joints of the roof panel (6) and the roof panel edge bracket (7) are subjected to quality inspection to ensure that the strength of the welded joints meets the design requirements.

9. A method for installing an assembled photovoltaic roof system suitable for photovoltaic building integration, characterized in that: The method comprises the following steps: a) preparing and fixing the roof panel side bracket (7) and the roof panel middle bracket (8) at a predetermined position; b) fixing the middle wave peak of the roof panel (6) to the roof panel middle bracket (8) by means of a buckle, and fixing the side wave peak to the roof panel side bracket (7); c) welding the joint between the roof panel (6) and the roof panel side bracket (7), and curling the male and female ribs at the top; d) placing the photovoltaic panel (1) at a predetermined position, and using a pressure block (2) to perform preliminary fixing through a locking clamp (4) and a pressure block bolt (3); e) adjusting the tightness of the pressure block bolt (3) to ensure that the photovoltaic panel (1) is firmly fixed and is easy to disassemble and replace in the future; f) adding sealing materials at required positions to enhance the waterproof and sealing performance of the system.

10. The method for installing an assembled photovoltaic roof system suitable for photovoltaic building integration according to claim 9, characterized in that: During the installation process, the structural strength of the roof panel (6), the roof panel side bracket (7) and the roof panel middle bracket (8) is monitored in real time to ensure the structural safety during the installation process; after the installation is completed, the photovoltaic roof system is subjected to a comprehensive structural strength check and mechanical performance test to verify the safety and reliability of the system.

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