High-light-transmittance photovoltaic integrated module suitable for special-shaped roof and construction method of high-light-transmittance photovoltaic integrated module

Abstract

The invention provides a high-light-transmittance photovoltaic integrated module suitable for a special-shaped roof, and relates to the technical field of photovoltaic building integration, the high-light-transmittance photovoltaic integrated module comprises high-light-transmittance photovoltaic glass, the high-light-transmittance photovoltaic glass is formed by splicing a plurality of photovoltaic glass units, the lower ends of the two sides of each photovoltaic glass unit are each provided with an aluminum alloy auxiliary frame, and the aluminum alloy auxiliary frames are connected with the high-light-transmittance photovoltaic glass. A purline is arranged at the lower end of the aluminum alloy auxiliary frame, an aluminum alloy keel is arranged at the lower end of the purline, a steel plate is arranged at the lower end of the aluminum alloy keel, and the lower side of the steel plate is fixedly connected with a building body. The invention further provides a construction method of the high-transmittance photovoltaic integrated module. According to the invention, the installation efficiency of the photovoltaic system can be improved, the installation cost is reduced, and the applicability and universality of the photovoltaic system in the building field are enhanced.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaic building integration, and in particular to a high-transmittance photovoltaic integration module suitable for special-shaped roofs and a construction method thereof. Background Art

[0002] At present, my country is actively promoting the "dual carbon strategy" goals. Through consumption reduction and carbon reduction measures and the development of new building industrialization, green buildings and rooftop photovoltaic projects have been rapidly promoted. Especially in the southeast coastal areas, the climate conditions of light and heat synchronization provide an ideal environment for the application of photovoltaic projects. With the increase in global demand for renewable energy and the improvement of environmental awareness, photovoltaic building integration technology has become the focus of the construction industry. In roof applications, traditional photovoltaic modules are difficult to adapt to complex building shapes and aesthetic requirements due to their rigid design. Cadmium telluride thin-film photovoltaic technology, with its high light transmittance and excellent power generation performance, can effectively use solar energy for power generation while meeting the requirements of building aesthetics and lighting by combining ultra-white tempered glass with cadmium telluride thin-film photovoltaic glass.

[0003] However, the existing construction methods are complex, time-consuming and costly, which limits the large-scale application of photovoltaic systems. Traditional photovoltaic roofs are usually installed after the building roof structure is formed to achieve the purpose of light energy collection and utilization. This process has many defects: the roof structure is not properly reinforced in the early design stage, and the weight of the photovoltaic equipment may cause damage to the roof; during installation, the drilling of brackets will damage the waterproof layer of the roof; the connection nodes of the photovoltaic equipment are not stable or easy to rust, which may cause safety hazards in severe weather conditions. In addition, photovoltaic modules are exposed to the outside for a long time, which shortens their service life and increases maintenance costs. Summary of the invention

[0004] In view of the above-mentioned prior art, the present invention proposes a high-transmittance photovoltaic integrated module suitable for special-shaped roofs and a construction method thereof, so as to solve the problems of complex construction, long cycle, high cost and so on in the prior art, thereby improving the installation efficiency of the photovoltaic system, reducing the installation cost, and enhancing its applicability and popularity in the construction field.

[0005] The present invention provides a high-transmittance photovoltaic integrated module suitable for special-shaped roofs, including high-transmittance photovoltaic glass, which is composed of a number of photovoltaic glass units spliced ​​together, and each of the photovoltaic glass units is provided with an aluminum alloy auxiliary frame at the lower end of both sides, and a purlin is provided at the lower end of the aluminum alloy auxiliary frame, and an aluminum alloy keel is provided at the lower end of the purlin, and a steel plate is provided at the lower end of the aluminum alloy keel, and the lower side of the steel plate is fixedly connected to the main body of the building.

[0006] Preferably, each of the photovoltaic glass units comprises a 2 mm cadmium telluride power generation glass layer, and the upper and lower ends of the 2 mm cadmium telluride power generation glass layer are both 1.52 mm polyvinyl butyral board and 8 mm ultra-white tempered glass layer from inside to outside.

[0007] Preferably, photovoltaic cables are provided at both ends of the photovoltaic glass unit for power transmission, and positive and negative electrode junction boxes are provided on either side of the photovoltaic glass unit for electrical connection.

[0008] Preferably, borosilicate structural adhesive is provided between the photovoltaic glass unit and the aluminum alloy auxiliary frame.

[0009] Preferably, aluminum alloy support strips and silicone sealant are provided between adjacent photovoltaic glass units.

[0010] Preferably, a plurality of “∏”-shaped aluminum alloy pressing blocks are arranged between adjacent aluminum alloy auxiliary frames for fixing the aluminum alloy auxiliary frames, and the aluminum alloy pressing blocks are connected to the purlins through stainless steel screws, and metal gaskets are arranged between the heads of the stainless steel screws and the aluminum alloy pressing blocks.

[0011] Preferably, the two aluminum alloy auxiliary frames at the lower end of the same photovoltaic glass unit are connected by a plurality of stainless steel anti-fall ropes.

[0012] Preferably, a rubber gasket is provided between the aluminum alloy auxiliary frame and the purlin.

[0013] Preferably, the aluminum alloy keel is fixed to the steel plate by means of stainless steel bolts, and aluminum alloy buckle covers are provided on the outer sides of both ends of the stainless steel bolts.

[0014] The present invention also provides a construction method based on the high-transmittance photovoltaic integrated module suitable for special-shaped roofs, comprising the following steps: Step 1: Construction of the main building structure: After the main building structure is completed, the steel plate is fixed to the main building by welding; Step 2: Modular division of photovoltaic integrated roof: Divide the photovoltaic roof into multiple standardized modules according to the actual size and design requirements of the building roof; Step 3: Factory unitization: The photovoltaic glass is processed in the factory. After testing, the photovoltaic glass units are packaged and transported to the installation site. Step 4: Integrated assembly of photovoltaic roof: At the construction site, modularly install the photovoltaic glass units onto the purlins according to the design drawings and fix them with aluminum alloy blocks; Step 5: PV glass group string wiring: Connect all cables on the PV glass, ensure that the electrical connectors are firm and meet safety standards, and neatly store the PV cables in the grooves on both sides of the purlin; Step 6: Waterproofing of photovoltaic integrated roof: install aluminum alloy support strips in the gaps between adjacent photovoltaic glass units, and use silicone sealant to seal the gaps; Step 7. Connect the complete circuit and debug: After completing the electrical connection of all photovoltaic glass units, check and debug the overall circuit.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. The present invention provides a high-transmittance photovoltaic integrated module suitable for special-shaped roofs and a construction method thereof. The system adopts standardized unit blocks for efficient installation. By combining the light energy collection and conversion system, a high-performance roof system integrating light transmission, energy collection and enclosure is formed. It can not only improve the construction efficiency and system reliability, but also significantly reduce the cost, laying the foundation for the widespread application of photovoltaic technology in the field of construction.

[0016] 2. Improve light transmittance and power generation performance: The present invention uses cadmium telluride thin-film photovoltaic glass with a light transmittance of 30% to replace the traditional roof glass curtain wall, forming a high-performance roof system that integrates light transmission, energy collection, and enclosure. This material combination not only enhances the beauty and natural lighting of the building, but also significantly improves the conversion efficiency of solar energy.

[0017] 3. Standardized modular design for efficient construction: The present invention divides the photovoltaic integrated roof into standard unit blocks of 2.4 square meters for assembly. This modular design significantly simplifies the installation process and improves construction efficiency and reliability. Through standardized design, the installation process is simpler, construction time and labor costs are reduced, and the service life of the system is extended.

[0018] 4. Applicable to complex and irregular roof structures: The present invention can adapt to complex and irregular roofs through flexible modular panel design. Modular panels allow flexible assembly and adjustment, ensuring that the photovoltaic system can perfectly fit different roof curves and angles, meeting the diverse design needs of modern buildings.

[0019] 5. Green and low-carbon building concept: This invention combines the concept of green and low-carbon building, converts light energy into electrical energy for building use through low-voltage grid connection, and realizes a new energy utilization model of "self-generation and self-use, surplus electricity to the grid". This model not only meets the daily energy consumption needs of buildings, but also reduces dependence on the public power grid, and promotes the widespread application of renewable energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the structure of a high-transmittance photovoltaic integrated module in an embodiment of the present invention.

[0021] Figure 2 Schematic diagram of the structure of the high-transmittance photovoltaic glass in an embodiment of the present invention.

[0022] Figure 3 Schematic diagram of the installation of the aluminum alloy pressing block in the embodiment of the present invention.

[0023] Figure 4 Schematic diagram of the installation of high-transmittance photovoltaic glass in an embodiment of the present invention.

[0024] In the figure: 1. Steel plate; 2. Stainless steel bolts; 3. Aluminum alloy buckle cover; 4. Aluminum alloy keel; 5. Stainless steel anti-fall rope; 6. Aluminum alloy auxiliary frame; 7-1. Aluminum alloy pressure block; 7-2. Metal gasket; 7-3. Stainless steel screw; 8. High-transmittance photovoltaic glass; 8-1. 8mm ultra-white tempered glass; 8-2. 1.52mm polyvinyl butyral board; 8-3. 2mm cadmium telluride power generation glass layer; 9. Aluminum alloy support bar; 10. Silicone sealant; 11. Silicone boron structural adhesive; 12. Rubber gasket; 13. Photovoltaic cable; 14. Purlin. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below with reference to specific diagrams.

[0026] Example: Figure 1-4 As shown, a high-transmittance photovoltaic integrated module suitable for special-shaped roofs includes a high-transmittance photovoltaic glass 8, which is composed of a plurality of photovoltaic glass units. Aluminum alloy support strips 9 are installed between adjacent photovoltaic glass units, and silicone sealant 10 is used to seal to ensure waterproofness and sealing. Figure 2 As shown, the photovoltaic glass unit includes a 2mm cadmium telluride power generation glass layer 8-3, the upper and lower ends of the 2mm cadmium telluride power generation glass layer 8-3 are both 1.52mm polyvinyl butyral board 8-2 and 8mm ultra-white tempered glass layer 8-1 from the inside to the outside, and photovoltaic cables 13 are provided at both ends of the photovoltaic glass unit for power transmission, and positive and negative terminal boxes are provided on either side of the photovoltaic glass unit for electrical connection.

[0027] Furthermore, each of the photovoltaic glass units is provided with an aluminum alloy auxiliary frame 6 at the lower ends of both sides, and the aluminum alloy auxiliary frame 6 is used to fix the photovoltaic glass 8. The photovoltaic glass unit and the aluminum alloy auxiliary frame 6 are connected by silicon boron structural adhesive 11 to ensure the stability of the glass.

[0028] Furthermore, a purlin 14 is provided at the lower end of the aluminum alloy auxiliary frame 6, and a rubber gasket 12 is provided between the aluminum alloy auxiliary frame 6 and the purlin 14. The grooves on both sides of the purlin 14 can be used to lay cables. The purlin 14 is separated from the aluminum alloy auxiliary frame 6 by the rubber gasket 12 to enhance the overall stability and safety. The rubber gasket 12 is used to provide shock absorption and sealing functions. Two "∏"-shaped aluminum alloy pressing blocks 7-1 are provided between adjacent aluminum alloy auxiliary frames 6 to fix the aluminum alloy auxiliary frames 6. The aluminum alloy pressing blocks 7-1 are connected to the purlin 14 through stainless steel screws 7-3. A metal gasket 7-2 is provided between the head of the stainless steel screw 7-3 and the aluminum alloy pressing block 7. The aluminum alloy pressing block 7-1, the metal gasket 7-2 and the stainless steel screw 7-3 work together to fix the structure on the purlin 14 to ensure overall stability. The two aluminum alloy auxiliary frames 6 at the lower end of the same photovoltaic glass unit are connected by two stainless steel anti-fall ropes 5 to provide additional safety protection to prevent the glass from accidentally falling off.

[0029] Furthermore, the lower end of the purlin 14 is provided with an aluminum alloy keel 4, which serves as the main support frame to provide structural strength and stability. The purlin 14 is welded to the aluminum alloy keel 4 to provide additional support. The lower end of the aluminum alloy keel 4 is provided with a steel plate 1, and the lower side of the steel plate 1 is welded to the main body of the building to provide basic support. The aluminum alloy keel 4 is fixed to the steel plate 1 through a connecting plate and a stainless steel bolt 2. This connection allows the angle between the aluminum alloy keel 4 and the steel plate 1 to be adjusted to meet the installation requirements of roofs of different shapes. Aluminum alloy buckle covers 3 are provided on the outer sides of both ends of the stainless steel bolt 2. The aluminum alloy buckle covers 3 are used to cover the connecting parts to prevent them from rusting and enhance the durability of the structure.

[0030] The construction method of the high-transmittance photovoltaic integrated module suitable for special-shaped roofs comprises the following steps: Step 1: Construction of the main building structure: Complete the construction of the main building structure, including the construction of infrastructure such as walls and roof frames. The steel plate 1 is fixed to the main building by welding to provide a solid foundation support to ensure the stability of the subsequent installation of photovoltaic modules. Step 2: Modular division of photovoltaic integrated roof: According to the actual size and design requirements of the building roof, the photovoltaic roof is divided into multiple standardized modules. The modular design helps to improve construction efficiency and ensure seamless splicing between modules; Step 3: Factory unit processing: photovoltaic glass unit processing is carried out in the factory, including cutting, assembly, functional testing and other processes of photovoltaic modules to ensure that the quality and performance of each photovoltaic unit meet the standards. After the test is completed, the photovoltaic glass units are packaged and transported to the installation site; Step 4: Integrated assembly of photovoltaic roof: At the construction site, the photovoltaic glass units are modularly installed on the purlins 14 according to the design drawings, and are fixed with aluminum alloy blocks to ensure the stability and safety of the components. For the special-shaped positions of the roof, suitable aluminum alloy blocks are selected according to the design drawings for fixing to ensure the overall beauty and consistency; Step 5: PV glass group string wiring: Connect all cables on the PV glass, ensure that the electrical connectors are firm and meet safety standards, and neatly store the PV cables in the grooves on both sides of the purlin to ensure that the lines are not exposed to reduce the risk of damage; Step 6: Waterproofing of the photovoltaic integrated roof: installing aluminum alloy support strips 9 in the gaps between adjacent photovoltaic glass units to provide structural support and decorative effects, and using silicone sealant 10 to seal the gaps to ensure the overall waterproof performance of the roof; Step 7. Connect the complete circuit and debug: After completing the electrical connection of all photovoltaic glass units, check and debug the entire circuit to ensure that all components are operating normally, test the power generation efficiency and stability of the system, and ensure that it meets the design requirements and safety standards; Step 8, Final Inspection and Acceptance: After all installation and commissioning work is completed, a comprehensive final inspection is carried out to ensure that all components and system functions of the photovoltaic roof meet the design standards, complete the final acceptance, and record all data and parameters during the construction process to provide a reference for subsequent maintenance and operation.

[0031] The high-transmittance photovoltaic integrated module adopts a standardized unit block design, which is easy to mass-produce in the factory and quickly install on site, reducing construction complexity and cost, and can adapt to different roof shapes and architectural requirements. Through the precise coordination of various components, the high-transmittance photovoltaic glass can be safely and effectively installed on the roof of the building. It has good mechanical properties and durability, and supports photovoltaic power generation functions.

[0032] The above are only implementation modes of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure made using the contents of the present invention's specification and drawings, directly or indirectly used in other related technical fields, are also within the patent protection scope of the present invention.

Claims

1. A high-transmittance photovoltaic integrated module suitable for special-shaped roofs, characterized in that: It comprises high-transmittance photovoltaic glass, which is composed of a number of photovoltaic glass units spliced ​​together, each of the photovoltaic glass units is provided with an aluminum alloy auxiliary frame at the lower ends of both sides, a purlin is provided at the lower end of the aluminum alloy auxiliary frame, an aluminum alloy keel is provided at the lower end of the purlin, a steel plate is provided at the lower end of the aluminum alloy keel, and the lower side of the steel plate is fixedly connected to the main body of the building.

2. The high-transmittance photovoltaic integrated module suitable for special-shaped roofs according to claim 1, characterized in that: Each of the photovoltaic glass units comprises a 2mm cadmium telluride power generation glass layer, and the upper and lower ends of the 2mm cadmium telluride power generation glass layer are both 1.52mm polyvinyl butyral plates and 8mm ultra-white tempered glass layers from the inside to the outside.

3. The high-transmittance photovoltaic integrated module suitable for special-shaped roofs according to claim 1, characterized in that: Photovoltaic cables are provided at both ends of the photovoltaic glass unit for power transmission, and positive and negative terminal boxes are provided on either side of the photovoltaic glass unit for electrical connection.

4. The high-transmittance photovoltaic integrated module suitable for special-shaped roofs according to claim 1, characterized in that: Silicon boron structural adhesive is arranged between the photovoltaic glass unit and the aluminum alloy auxiliary frame.

5. The high-transmittance photovoltaic integrated module suitable for special-shaped roofs according to claim 1, characterized in that: Aluminum alloy support strips and silicone sealant are arranged between adjacent photovoltaic glass units.

6. The high-transmittance photovoltaic integrated module suitable for special-shaped roofs according to claim 1, characterized in that: A plurality of "∏"-shaped aluminum alloy pressing blocks are arranged between adjacent aluminum alloy auxiliary frames for fixing the aluminum alloy auxiliary frames. The aluminum alloy pressing blocks are connected to the purlins through stainless steel screws, and metal gaskets are arranged between the heads of the stainless steel screws and the aluminum alloy pressing blocks.

7. The high-transmittance photovoltaic integrated module suitable for special-shaped roofs according to claim 1, characterized in that: The two aluminum alloy auxiliary frames at the lower end of the same photovoltaic glass unit are connected by a number of stainless steel anti-fall ropes.

8. The high-transmittance photovoltaic integrated module suitable for special-shaped roofs according to claim 1, characterized in that: A rubber gasket is arranged between the aluminum alloy auxiliary frame and the purlin.

9. The high-transmittance photovoltaic integrated module suitable for special-shaped roofs according to claim 1, characterized in that: The aluminum alloy keel is fixed to the steel plate by stainless steel bolts, and aluminum alloy buckle covers are arranged on the outer sides of both ends of the stainless steel bolts.

10. A construction method for a high-transmittance photovoltaic integrated module suitable for special-shaped roofs based on any one of claims 1 to 9, characterized in that: The steps include: Step 1: Construction of the main building structure: After the main building structure is completed, the steel plate is fixed to the main building by welding; Step 2: Modular division of photovoltaic integrated roof: Divide the photovoltaic roof into multiple standardized modules according to the actual size and design requirements of the building roof; Step 3: Factory unitization: The photovoltaic glass is processed in the factory. After testing, the photovoltaic glass units are packaged and transported to the installation site. Step 4: Integrated assembly of photovoltaic roof: At the construction site, modularly install the photovoltaic glass units onto the purlins according to the design drawings and fix them with aluminum alloy blocks; Step 5: PV glass group string wiring: Connect all cables on the PV glass, ensure that the electrical connectors are firm and meet safety standards, and neatly store the PV cables in the grooves on both sides of the purlin; Step 6: Waterproofing of photovoltaic integrated roof: install aluminum alloy support strips in the gaps between adjacent photovoltaic glass units, and use silicone sealant to seal the gaps; Step 7. Connect the complete circuit and debug: After completing the electrical connection of all photovoltaic glass units, check and debug the overall circuit.

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