Lightweight BIPV waterproof and thermal insulation integrated roof and waterproof method thereof

Abstract

The application discloses a light BIPV waterproof and heat preservation integrated roof and a waterproof method thereof, and belongs to the field of building roofs. The structure comprises a photovoltaic module for converting solar energy into electric energy to realize energy self-sufficiency of a building, and a metal roof panel comprising a hem on both sides, a bonding platform arranged on the inner side of the hem, and a wave-shaped protrusion arranged in the middle. The photovoltaic module is arranged on the bonding platform. The roof structure can flexibly meet the demand of different climate zones on the heat transfer coefficient of the building roof, the waterproof frame can meet the high-grade waterproof requirement of the standard roof, the waterproof and heat preservation performance of the building roof is met, and the product is lightened and optimized, the roof weight is transmitted to the bearing wall of the building through the design of the embedded part assembly, and the roof can be more suitable for large-span space and the building roof with strict roof load requirements.

Description

Technical Field

[0001] This invention relates to a lightweight BIPV integrated waterproof and thermal insulation roof and its waterproofing method, belonging to the field of building roofing. Background Technology

[0002] The promotion and application of building-integrated photovoltaic (BIPV) technology is one of the important measures to promote the low-carbon transformation of building energy consumption. The government has introduced a number of policies to promote the installation of photovoltaic systems on the roofs of newly built or existing industrial plants, public buildings and residential buildings. At the same time, various photovoltaic new energy companies have launched a variety of roof BIPV products, which are constantly being optimized and improved in terms of component efficiency, product life, structural safety and price cost, and the applicable scenarios are also being expanded.

[0003] However, existing products have not yet met the performance requirements for waterproofing and thermal insulation of building roofs, and the addition of waterproofing and thermal insulation structures cannot impose excessive load requirements on the building roof, especially for roof structures with large spans. Therefore, it is necessary to create and invent a lightweight BIPV integrated waterproofing and thermal insulation roofing product. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a lightweight BIPV integrated waterproof and thermal insulation roof and its waterproofing method to solve the problems.

[0005] To achieve the above objectives, the present invention provides a lightweight BIPV integrated waterproof and thermal insulation roof, comprising: Photovoltaic modules are used to convert solar energy into electrical energy, enabling buildings to achieve energy self-sufficiency. A metal roof panel includes rolled edges on both sides, an adhesive platform placed inside the rolled edges, and a corrugated protrusion in the middle; the photovoltaic module is mounted on the adhesive platform; a plurality of metal roof panels are provided, and the rolled edges of two adjacent metal roof panels abut against each other; The support component includes purlins, a fixing end, and an adhesive end; the fixing end is inserted into the corrugated protrusion where each of the metal roof panels is located, and the adhesive end is clamped and fixed on the corrugated protrusion; the adhesive end supports and fixes the photovoltaic module. An insulation layer is installed beneath the metal roof panel; An embedded connection component is installed and fixed on the building's load-bearing wall and is fixedly connected to the support component; the embedded connection component transfers the load of the metal roof panel and the photovoltaic module to the building's load-bearing wall; the embedded connection component includes a metal plate and J-shaped embedded bolts, wherein the metal plate and the embedded bolts are partially embedded in the building's load-bearing wall; the embedded bolts protrude from the building's load-bearing wall and are fixedly connected to the purlin.

[0006] Preferably, an insulation pad is added between the metal plate and the purlin to break up thermal bridges.

[0007] Preferably, the insulation layer is made of polyurethane insulation boards of different thicknesses to form a closed roof insulation layer.

[0008] Preferably, the thermal conductivity of the polyurethane insulation board is 0.024 W / (m²). K), and the material density is 35 kg / m³. 3 .

[0009] A waterproofing method for a lightweight BIPV integrated waterproof and thermal insulation roof includes the following steps: Step 1: After the metal plate is embedded, it will be completely submerged or at least flush with the load-bearing wall of the building, and a waterproof coating will be applied to the joint between the metal plate and the load-bearing wall of the building. Step 2: Lay waterproof membrane on the metal roof panel and apply waterproof coating to the waterproof membrane; Step 3: Fill the joint between the two mating rolled edges with sealant.

[0010] Preferably, the photovoltaic module uses a lightweight double-glass frameless photovoltaic panel, with a gap between the edge of the photovoltaic panel and the rolled edge, allowing rainwater to flow out through the gap.

[0011] Preferably, in step two, before laying the waterproof membrane, the surface of the metal roof panel is pretreated, including cleaning, rust removal and applying primer.

[0012] Preferably, in step two, the edge joint between the metal roof panel and the photovoltaic module is sealed using hot-melt welding technology.

[0013] Beneficial effects The roof structure of this invention can flexibly meet the requirements of different climate zones for the heat transfer coefficient of building roofs. Its waterproof frame can meet the high-level waterproof requirements of standard roofs. While meeting the waterproof and thermal insulation performance of building roofs, the product is optimized for lightweighting. Through the design of embedded components, the weight of the roof is transferred to the load-bearing walls of the building, making the roof more adaptable to large-span spaces and building roofs with strict roof load requirements. Attached Figure Description

[0014] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a structural schematic diagram of a lightweight BIPV integrated waterproof and thermal insulation roof according to the present invention; Figure 2 This is a schematic diagram of the structure of the support component of the present invention; Figure 3 This is a schematic diagram of the pre-embedded connection component of the present invention. Detailed Implementation

[0015] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0016] Please see Figures 1-3 This invention provides a lightweight BIPV integrated waterproof and thermal insulation roofing technology solution, comprising: Photovoltaic module 1 utilizes existing lightweight double-glass frameless photovoltaic modules to achieve building energy self-sufficiency. Its surface is designed to allow construction and maintenance personnel to walk on it, eliminating the need for maintenance walkways and thus increasing the installed photovoltaic capacity. The frameless design of photovoltaic module 1 reduces its weight and facilitates rainwater washing away surface and edge dust, minimizing the impact of dust accumulation on the photovoltaic module's photoelectric efficiency.

[0017] The metal roof panel 2 is made of high-strength aluminum alloy, possessing excellent corrosion resistance and formability. The metal roof panel 2 includes rolled edges 21 on both sides, an bonding platform 22 located inside the rolled edges 21, and a corrugated protrusion 23 in the center. The integrated design of the rolled edges 21, bonding platform 22, and corrugated protrusion 23 reduces gaps between components, improving overall sealing and stability. The photovoltaic module 1 is installed on the bonding platform 22. Several metal roof panels 2 are provided, with the rolled edges 21 of two adjacent panels abutting each other. Laser welding technology is used at the abutting edge 21 to achieve a seamless connection, improving waterproof performance. The corrugated protrusion 23, designed in the center of the metal roof panel 2, not only enhances structural strength but also facilitates the installation of the module 3, providing stable load-bearing capacity for the photovoltaic module 1.

[0018] The support component 3 includes purlins 31, a fixing end 32, and an adhesive end 33, all made of lightweight, high-strength composite materials. The fixing end 32 is inserted into the corrugated protrusion 23 of the metal roof panel 2, and the adhesive end 33 is clamped and fixed on the corrugated protrusion 23, supporting and fixing the photovoltaic module 1. The fixing end 32 is L-shaped, extending into the bottom surface of the metal roof panel 2, and is connected to the pre-embedded connection component 5 through the purlins 31 (the fixing end 32 and the purlins 31 are fixed with self-tapping screws). Specifically, the purlins 31 have two right-angle corners. One corner is inserted into the gap between two adjacent insulation layers 4, and the other corner turns onto the metal plate 51, where the two are locked and fixed by pre-embedded bolts 52.

[0019] Insulation layer 4 uses high-performance polyurethane insulation board with a thermal conductivity as low as 0.024 W / (m·K) and a material density of 35 kg / m³, providing excellent thermal insulation performance.

[0020] The pre-embedded connection component 5 includes a metal plate 51 and J-shaped pre-embedded bolts 52. The metal plate 51 and pre-embedded bolts 52 are partially embedded within the building's load-bearing wall 6 to ensure the stability and reliability of the connection. The pre-embedded bolts 52 protrude from the building's load-bearing wall 6 and are fixedly connected to the purlins 31 by bolts or welding, allowing the pressure of the metal roof panel 2 to be transmitted to the pre-embedded bolts 52 and the building's load-bearing wall 6. Furthermore, an insulation pad is provided between the metal plate 51 and the purlins 31 to break thermal bridges and improve the roof's insulation performance. The pre-embedded bolts 52 are designed in a J-shape to ensure better securing them within the building's load-bearing wall 6, preventing the roof from detaching from the wall.

[0021] A waterproofing method for a lightweight BIPV integrated waterproof and thermal insulation roof; Includes the following steps: Step 1: After the metal plate 51 is embedded, it will be completely submerged or at least flush with the load-bearing wall 6 of the building, and a waterproof coating will be applied at the joint between the metal plate 51 and the load-bearing wall 6 of the building. Step 2: Lay waterproof membrane on the metal roof panel 2 and apply waterproof coating to the waterproof membrane; Step 3: Fill the joint of the two mating rolled edges 21 with sealant.

[0022] Furthermore, waterproofing is applied to the joint between the metal plate 51 and the load-bearing wall 6: After the metal plate 51 is embedded in the load-bearing wall 6, it will be completely submerged or at least flush with the wall 6. A self-healing polymer waterproof coating is applied to the joint between the metal plate 51 and the load-bearing wall 6. In one embodiment, a polyurethane waterproof coating is used. This coating can automatically repair cracks that appear at the joint through a chemical reaction within the material, maintaining the integrity of the waterproof layer.

[0023] Furthermore, a self-healing polymer sealant is filled at the joint of the rolled edges 21 of the two abutting metal roof panels 2. In one embodiment, a polyurethane waterproof sealant with excellent weather resistance is used.

[0024] Furthermore, waterproofing is applied to the joint between the photovoltaic module 1 and the metal roof panel 2: the photovoltaic module 1 uses a lightweight double-glass frameless photovoltaic panel, creating a gap between the edge of the photovoltaic panel and the rolled edge 21 of the metal roof panel 2. In one embodiment, the rolled edge 21 and the photovoltaic panel form a 5mm drainage gap to allow rainwater to flow out. At the junction of the bonding platform 22 and the photovoltaic module 1, a hot-melt welding technique is used for sealing to improve waterproofing performance.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims. Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A lightweight BIPV integrated waterproof and thermal insulation roof, characterized in that: include: Photovoltaic modules are used to convert solar energy into electrical energy, enabling buildings to achieve energy self-sufficiency. A metal roof panel includes rolled edges on both sides, an adhesive platform placed inside the rolled edges, and a corrugated protrusion in the middle; the photovoltaic module is mounted on the adhesive platform; a plurality of metal roof panels are provided, and the rolled edges of two adjacent metal roof panels abut against each other; The support component includes purlins, a fixing end, and an adhesive end; the fixing end is inserted into the corrugated protrusion where each of the metal roof panels is located, and the adhesive end is clamped and fixed on the corrugated protrusion; the adhesive end supports and fixes the photovoltaic module. An insulation layer is installed beneath the metal roof panel; An embedded connection component is installed and fixed on the building's load-bearing wall and is fixedly connected to the support component; the embedded connection component transfers the load of the metal roof panel and the photovoltaic module to the building's load-bearing wall; the embedded connection component includes a metal plate and J-shaped embedded bolts, wherein the metal plate and the embedded bolts are partially embedded in the building's load-bearing wall; the embedded bolts protrude from the building's load-bearing wall and are fixedly connected to the purlin.

2. The lightweight BIPV integrated waterproof and thermal insulation roof according to claim 1, characterized in that: An insulation pad is placed between the metal plate and the purlin to break up thermal bridges.

3. The lightweight BIPV integrated waterproof and thermal insulation roof according to claim 1, characterized in that: The fixed end is L-shaped, extends into the bottom surface of the metal roof panel, and is connected to the pre-embedded connection component through the purlin.

4. The lightweight BIPV integrated waterproof and thermal insulation roof according to claim 1, characterized in that: The insulation layer uses polyurethane insulation boards of different thicknesses to form a closed roof insulation layer.

5. The lightweight BIPV integrated waterproof and thermal insulation roof according to claim 4, characterized in that: The thermal conductivity of polyurethane insulation board is 0.024 W / (m²). K), and the material density is 35 kg / m³. 3 .

6. A waterproofing method for a lightweight BIPV integrated waterproof and thermal insulation roof, employing the lightweight BIPV integrated waterproof and thermal insulation roof as described in claim 1, characterized in that: Includes the following steps: Step 1: After the metal plate is embedded, it will be completely submerged or at least flush with the load-bearing wall of the building, and a waterproof coating will be applied to the joint between the metal plate and the load-bearing wall of the building. Step 2: Lay waterproof membrane on the metal roof panel and apply waterproof coating to the waterproof membrane; Step 3: Fill the joint between the two mating rolled edges with sealant.

7. The waterproofing method for a lightweight BIPV integrated waterproof and thermal insulation roof according to claim 6, characterized in that: The photovoltaic module uses a lightweight double-glass frameless photovoltaic panel, with a gap between the edge of the photovoltaic panel and the rolled edge, allowing rainwater to flow out through the gap.

8. The waterproofing method for a lightweight BIPV integrated waterproof and thermal insulation roof according to claim 6, characterized in that: In step two, before laying the waterproof membrane, the surface of the metal roof panel is pretreated, including cleaning, rust removal and applying primer.

9. The waterproofing method for a lightweight BIPV integrated waterproof and thermal insulation roof according to claim 6, characterized in that: In step two, the edge joint between the metal roof panel and the photovoltaic module is sealed using hot-melt welding technology.

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