A BIPV photovoltaic building material and a manufacturing method thereof

Abstract

The present invention relates to a BIPV photovoltaic building material and a method for making the same. The BIPV photovoltaic building material comprises a photovoltaic power generation layer and a base layer stacked in sequence. The base layer is a back plate made of a plastic material. The periphery of the back plate is provided with a folded edge. The folded edge is provided with a fixed angle code. One side of the fixed angle code is fixedly connected to the folded edge, and the other side of the fixed angle code is fixedly connected to the building. The BIPV photovoltaic building material combines the photovoltaic power generation system with the building material well, has a high degree of modularization, is easy to assemble and process, can realize standard modular production, is easy to connect with the main body of the building structure, is easy to install, has high safety, has a wide range of applications, can be compatible with the existing building exterior wall system in terms of appearance and structural installation, and can completely replace the building exterior surface materials.

Description

Technical Field

[0001] The present invention relates to the field of photovoltaic technology, and more specifically, to a BIPV photovoltaic building material and a manufacturing method thereof. Background Art

[0002] BIPV (Building Integrated Photovoltaic) is a technology that integrates solar power generation (photovoltaic) products into buildings. It integrates solar power generation with the roof and walls of the building, allowing the building itself to use solar energy resources to produce electricity.

[0003] At present, photovoltaic products that are adapted to the diversification of building photovoltaic application forms are developing in the direction of building materials and components. However, there are few photovoltaic building materials that can truly replace traditional building exterior walls and are recognized by the building exterior wall industry. The more common photovoltaic panels in the prior art include a front plate glass and a back plate, and a cell located between the front plate glass and the back plate, wherein the side of the back plate pasted with the building is a rough surface, and the back plate material is a ceramic back plate made of ceramic material, so that the photovoltaic panel is more firmly bonded to the building and is not easy to fall off. However, photovoltaic panels of this structure are generally fixed on the exterior wall of the concrete structure by cement mortar bonding, which is not applicable to some steel structure exterior walls, for example, it cannot be applied on the curtain walls of many steel structure buildings. In addition, the junction box of the photovoltaic panel is set on the side of the back plate, and the junction box is bonded to the cell by structural adhesive. This type of photovoltaic panel has a high cost, and there are also problems such as complex installation and routing, difficult to carry out standardized modular operations, and insufficient applicability. Summary of the invention

[0004] In view of this, the purpose of the present invention is to provide a BIPV photovoltaic building material and a method for making the same. The BIPV photovoltaic building material can well combine the photovoltaic power generation system with the building materials, is suitable for various types of building exterior wall systems, can be used as a substitute for building exterior surface materials, and can be produced in a standard modular manner, thereby solving the problems existing in the prior art.

[0005] According to a first aspect of the present invention, there is provided a BIPV photovoltaic building material, comprising a photovoltaic power generation layer and a base layer stacked in sequence, wherein the base layer is a back panel made of a plastic material, the back panel is provided with a folded edge around the periphery, a fixed angle code is provided on the folded edge, one side of the fixed angle code is fixedly connected to the folded edge, and the other side of the fixed angle code is fixedly connected to the building.

[0006] Preferably, a side edge of the back plate is provided with a avoidance hole.

[0007] Preferably, a junction box is provided at the avoidance hole.

[0008] Preferably, the height of the folded edge is greater than or equal to the height of the junction box.

[0009] Preferably, a wiring avoidance hole is provided on the folded edge.

[0010] Preferably, a hollow structure for introducing refrigerant is provided inside the back plate, and an interface communicating with the hollow structure is provided around the back plate.

[0011] Preferably, a plurality of reinforcing ribs are provided on a surface of the back plate opposite to the photovoltaic power generation layer.

[0012] Preferably, the photovoltaic power generation layer comprises a first adhesive material layer, an insulating material layer, a second adhesive material layer, a solar cell sheet, a third adhesive material layer and a panel layer stacked in sequence, and the photovoltaic power generation layer is fixed to the back panel by lamination via the first adhesive material layer.

[0013] Preferably, the photovoltaic power generation layer is a photovoltaic single-glass laminate or a photovoltaic double-glass laminate, and the photovoltaic single-glass laminate or the photovoltaic double-glass laminate is bonded and fixed to the back panel by an adhesive material.

[0014] Preferably, a plurality of reinforcing fasteners are provided around the photovoltaic power generation layer, and the reinforcing fasteners are in an L-shaped structure. The reinforcing fasteners include a fixing plate and a hook plate. The fixing plate is fixedly connected to the folded edge, and the hook plate abuts against the side of the photovoltaic power generation layer away from the back plate.

[0015] Preferably, a rubber pad is provided between the hook plate and the photovoltaic power generation layer.

[0016] According to a second aspect of the present invention, there is provided a method for manufacturing the BIPV photovoltaic building material as described above, comprising the following steps:

[0017] 1) Cut out avoidance holes on the back panel;

[0018] 2) Bend the periphery of the back plate to form a folded edge, and connect a fixed angle code to the folded edge;

[0019] 3) bonding the photovoltaic power generation layer to the back plate by means of an adhesive material;

[0020] 4) A junction box is installed at the avoidance hole of the back panel;

[0021] 5) A plurality of reinforcing fasteners are arranged around the photovoltaic power generation layer, and the reinforcing fasteners are in an L-shaped structure. The reinforcing fasteners include a fixing plate and a hook plate. The fixing plate of the reinforcing fasteners is fixedly connected to the folded edge, and the hook plate of the reinforcing fasteners abuts against the side of the photovoltaic power generation layer away from the back plate.

[0022] The BIPV photovoltaic building material and the manufacturing method thereof provided by the present invention have at least the following beneficial effects:

[0023] (1) The base layer of the BIPV photovoltaic building material is a back panel made of a plastic material. The periphery of the back panel is provided with a folded edge, and a fixed angle code is provided on the folded edge. The BIPV photovoltaic building material can be conveniently installed on a building through the fixed angle code, and can completely replace the building's outer surface material.

[0024] (2) In the BIPV photovoltaic building material, a clearance hole is opened on the back panel, and a junction box is arranged at the clearance hole, so that the wires in the photovoltaic power generation layer can be led out from the clearance hole and connected to the junction box; the folded edge on the back panel can form a junction box installation space, and the junction box is installed on the inner side of the folded edge to save layout space; a wiring clearance hole is arranged on the folded edge, so that the wires led out from the junction box can pass through and merge into the joints between the BIPV photovoltaic building materials.

[0025] (3) A hollow structure can also be provided on the back plate, and a refrigerant is introduced into the hollow structure. By combining with a heat pump system, the heat generated by the photovoltaic power generation layer can be effectively discharged and utilized.

[0026] (4) Multiple reinforcing fasteners are arranged around the photovoltaic power generation layer, and the photovoltaic power generation layer is firmly fixed to the back plate through multiple reinforcing fasteners, thereby preventing the photovoltaic power generation layer from falling off due to long-term shear force or oxidation failure of the adhesive structure when installed on the slope or facade of a building, thereby improving safety during use.

[0027] (5) The manufacturing process of the BIPV photovoltaic building materials is simple, and the manufacturing and assembly can be completed in the factory, which can realize standard modular production. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above and other objects, features and advantages of the present invention will become more apparent through the following description of the embodiments of the present invention with reference to the accompanying drawings.

[0029] Figure 1 A schematic diagram of the three-dimensional structure of a BIPV photovoltaic building material according to an embodiment of the present invention is shown.

[0030] Figure 2 A schematic diagram of a partial cross-sectional structure of a BIPV photovoltaic building material according to an embodiment of the present invention is shown.

[0031] Figure 3 A schematic diagram of a partial cross-sectional structure of a BIPV photovoltaic building material according to another embodiment of the present invention is shown.

[0032] Figure 4 A front view of a BIPV photovoltaic building material according to an embodiment of the present invention is shown.

[0033] Figure 5for Figure 4 Cross-sectional view at AA in the middle.

[0034] Figure 6 This is a schematic diagram of multiple BIPV photovoltaic building materials installed on a building structure in an embodiment of the present invention.

[0035] Figure 7 This is a partial cross-sectional view of two adjacent BIPV photovoltaic building materials installed on a building structure in an embodiment of the present invention.

[0036] Figure 8 A plan view of a back panel in a BIPV photovoltaic building material according to an embodiment of the present invention is shown.

[0037] In the figure: back panel 1, folded edge 11, wiring avoidance hole 111, avoidance hole 12, stud 13, reinforcing rib 101, photovoltaic power generation layer 2, first adhesive material layer 21, insulating material layer 22, second adhesive material layer 23, solar cell 24, third adhesive material layer 25, panel layer 26, structural adhesive 27, fixed angle code 3, reinforcement fastener 4, fixing plate 41, hook plate 42, rubber pad 43, junction box 5, rivet 6, terminal 7, steel structure 81, self-tapping screw 82, insulating gasket 83, foam rod 84, sealant 85. DETAILED DESCRIPTION

[0038] Various embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. In each of the accompanying drawings, the same elements are represented by the same or similar reference numerals. For the sake of clarity, the various parts in the accompanying drawings are not drawn to scale.

[0039] The present invention provides a BIPV photovoltaic building material, comprising a photovoltaic power generation layer 2 and a base layer stacked in sequence, wherein the base layer is a back panel 1 made of a plastic material, a folded edge 11 is provided on the periphery of the back panel 1, a fixed angle code 3 is provided on the folded edge 11, one side of the fixed angle code 3 is fixedly connected to the folded edge 11, and the other side of the fixed angle code 3 is fixedly connected to the building.

[0040] like Figure 1 As shown, the folded edge 11 on the back plate 1 is formed by bending the periphery of the back plate 1, one side of the fixed angle code 3 abuts against one side of the folded edge 11, and is fixedly connected to the folded edge 11 by rivet connection or welding, and the direction of the folded edge 11 faces the side of the back plate 1 opposite to the photovoltaic power generation layer 2. By setting the fixed angle code 3 on the folded edge 11, it is convenient to fix the BIPV photovoltaic building material to the main body of the building structure. When connecting, self-tapping screws can be driven on the other side of the fixed angle code 3 to fix it to the building structure. The connection is convenient and efficient construction is convenient, and it is particularly suitable for installation on the main body of the steel structure building structure.

[0041] The back plate 1 can be made of metal materials and metal-like materials such as aluminum plates, aluminum-plastic plates, perforated aluminum plates, galvanized steel plates, etc. The material used to make the back plate 1 should have good plasticity to facilitate bending. The back plate 1 can also be a hollow structure. When the back plate 1 is a hollow structure, an interface connected to the hollow structure is provided around the back plate 1. The hollow structure is used to pass refrigerant. By combining with a heat pump system, the heat generated by the photovoltaic power generation layer 2 can be effectively discharged and utilized.

[0042] In this embodiment, the back plate 1 and the photovoltaic power generation layer 2 are both rectangular structures. The four sides of the back plate 1 are bent to form four folded edges 11. Three fixed angle codes 3 are evenly arranged on the folded edges 11 in the length direction, and two fixed angle codes 3 are arranged on the folded edges 11 in the width direction. One side of the fixed angle code 3 is fixedly connected to the folded edge 11 of the back plate 1 by a rivet 6, and the other side of the fixed angle code 3 faces the outside of the back plate 1, and is used to be fixedly connected to the main body of the building structure using self-tapping screws. It can be understood that in other alternative embodiments, the shape of the back plate 1 can also be square, trapezoidal, triangular, polygonal, etc., and this embodiment does not impose any limitation on the shape of the back plate 1.

[0043] It should be noted that when the photovoltaic power generation layer 2 is connected to the back plate 1, it can be connected by lamination. Specifically, the back plate 1 and the layers of the photovoltaic power generation layer 2 are stacked together in sequence, from bottom to top, the back plate 1, the first adhesive material layer 21, the insulating material layer 22, the second adhesive material layer 23, the solar cell 24, the third adhesive material layer 25 and the panel layer 26, and then the above layers are put into a lamination device for lamination to form an integral structure. It should be noted that when the photovoltaic power generation layer 2 is connected to the back plate 1 by lamination, preferably, the back plate 1 is first assembled into one with the layers of the photovoltaic power generation layer 2 by lamination, and then a folded edge 11 is formed around the back plate 1 and a fixed angle code 3 is set on the folded edge 11, which not only meets the process requirements of lamination but also meets the requirements of making the folded edge 11.

[0044] See also Figure 4 and Figure 5 In order to increase the rigidity of the BIPV photovoltaic building material, a plurality of reinforcing ribs 101 are provided on the side of the back plate 1 opposite to the photovoltaic power generation layer 2. The reinforcing ribs 101 are arranged along the short side direction of the back plate 1, and the plurality of reinforcing ribs 101 are evenly distributed on the back plate 1. The reinforcing ribs 101 can be fixedly connected to the back plate 1 by welding, riveting or screwing. In this embodiment, a plurality of studs 13 are welded on the back plate 1 at the position where the reinforcing ribs 101 are set, and the reinforcing ribs 101 are fixedly connected to the back plate 1 by the plurality of studs 13. In this embodiment, the reinforcing ribs 101 are in a groove-shaped structure and are formed by bending an aluminum plate. In other alternative embodiments, the reinforcing ribs 101 can also be in a "J"-shaped structure or an L-shaped structure.

[0045] A clearance hole 12 is provided on the side of the back plate 1, and a junction box 5 is provided at the clearance hole 12. The height of the folded edge 11 is greater than or equal to the height of the junction box 5. The clearance hole 12 is used to lead the wires in the photovoltaic power generation layer 2 out from here and connect them to the junction box 5. The folded edge 11 formed by the back plate 1 after bending can form an installation space for the junction box 5. The junction box 5 is installed inside the folded edge 11, which saves layout space and facilitates the wiring and wiring of the BIPV photovoltaic building material. Figure 4 and Figure 8 In this embodiment, three avoidance holes 12 are provided on the side of the back plate 1, and a junction box 5 is installed on each avoidance hole 12. In other alternative embodiments, multiple junction boxes 5 can be combined into a whole, so that only one large avoidance hole 12 is required on the back plate 1.

[0046] like Figure 2 As shown, it is a schematic diagram of the partial cross-sectional structure of the BIPV photovoltaic building material in this embodiment. The photovoltaic power generation layer 2 in this embodiment includes a first adhesive material layer 21, an insulating material layer 22, a second adhesive material layer 23, a solar cell 24, a third adhesive material layer 25 and a panel layer 26 stacked in sequence. The photovoltaic power generation layer 2 is fixed to the back panel 1 by lamination via the first adhesive material layer 21.

[0047] Among them, in order to make the photovoltaic power generation layer 2 have a higher photoelectric conversion efficiency and a smaller cell area, the solar cell 24 can be a high-efficiency crystal film cell. Of course, the solar cell 24 can also be an ordinary single crystal silicon cell or a polycrystalline silicon cell. The panel layer 26 is made of glass or a high-light-transmittance film material. Additional color and effect processing can be done on the surface or back of the panel layer 26 to meet the requirements of the building appearance. The first adhesive material layer 21, the second adhesive material layer 23 and the third adhesive material layer 25 are one of PVB film, SGP film, EVA film and POE film. The insulating material layer 22 is made of insulating rubber to ensure that the solar cell 24 is fully insulated from the back panel 1. Figure 8 As shown, in this embodiment, the plastic back panel 1 can be made into an unfolded flat plate as shown in the figure, and avoidance holes 12 are opened as required for installing the junction box 5, and then bent to form a folded edge 11 after lamination is completed.

[0048] In another embodiment of the present invention, the photovoltaic power generation layer 2 in the BIPV photovoltaic building material is an existing photovoltaic single glass laminate or photovoltaic double glass laminate, and the photovoltaic single glass laminate or photovoltaic double glass laminate is fixed to the back plate 1 by bonding material. Figure 3 As shown, the photovoltaic power generation layer 2 is a photovoltaic double-glass laminate, and the photovoltaic double-glass laminate is bonded and fixed on the back plate 1 by structural adhesive 27.

[0049] When the BIPV photovoltaic building material is installed on the slope or facade of a building, the photovoltaic power generation layer 2 may fall off due to the failure of the bonding structure due to long-term shear force or oxidation, and the falling off of the photovoltaic power generation layer 2 may cause certain safety hazards. In order to solve this technical problem, a plurality of reinforcing fasteners 4 are arranged around the photovoltaic power generation layer 2. The reinforcing fasteners 4 are in an L-shaped structure. The reinforcing fasteners 4 include a fixing plate 41 and a hook plate 42. The fixing plate 41 is fixedly connected to the folding edge 11, and the hook plate 42 abuts against the side of the photovoltaic power generation layer 2 away from the back plate 1. The periphery of the photovoltaic power generation layer 2 is connected by the reinforcing fasteners 4. Even if the bonding structure of the photovoltaic power generation layer 2 fails, it will not cause the photovoltaic power generation layer 2 to fall off and cause safety hazards. In order to avoid the rigid contact between the hook plate 42 of the reinforcing fastener 4 and the photovoltaic power generation layer 2 to damage the photovoltaic power generation layer 2, a rubber pad 43 is arranged between the hook plate 42 and the photovoltaic power generation layer 2. The side of the rubber pad 43 in contact with the hook plate 42 can be fixed by adhesive. In this embodiment, the reinforcing fastener 4 is formed by bending a rectangular steel plate, and the fixing plate 41 of the reinforcing fastener 4 is fixedly connected to the folded edge 11 by rivets 6 .

[0050] like Figure 6 As shown, when the BIPV photovoltaic building material provided by the present invention is installed and used, the fixed angle brackets 3 of the adjacent sides of two BIPV photovoltaic building materials are staggered to avoid mutual interference. A wiring avoidance hole 111 is provided on the folded edge 11 near the junction box 5 on the back plate 1, as shown in FIG. Figure 1 As shown, in the BIPV photovoltaic building material of this embodiment, two wiring avoidance holes 111 are opened on the folded edge 11 near the junction box 5. When the BIPV photovoltaic building material is installed, the wires led out from the junction box 5 pass through the wiring avoidance holes 111 on the folded edge 11, merge into the joint between the two BIPV photovoltaic building materials, and are connected to the wiring terminals 7 at the joint, and finally realize the series and parallel wiring of the wiring terminals 7 at the joint. Figure 7 , is a partial cross-sectional view of two adjacent BIPV photovoltaic building materials installed on a steel structure in this embodiment. When the BIPV photovoltaic building materials are installed, an insulating gasket 83 is set between the fixed angle code 3 and the steel structure 81, and the fixed angle code 3 is fixedly connected to the steel structure 81 by a self-tapping screw 82. After the BIPV photovoltaic building materials are fixed on the steel structure 81 and the wire routing is completed, a foam rod 84 is stuffed into the joints of the adjacent BIPV photovoltaic building materials, and finally the joints are filled with sealant 85 to play a waterproof role. When the BIPV photovoltaic building materials provided by the present invention are used on the building structure, a complete roof and facade system can be formed, and a simple weather-resistant glue sealing method is used to form the first reliable waterproof system for the building roof or facade.

[0051] The BIPV photovoltaic building materials provided by the present invention combine the photovoltaic power generation system with building materials very well, have a high degree of modularization, and the assembly and processing can be completed in the factory, which can realize standard modular production. It is compatible with the existing building exterior wall system both in appearance and structural installation, and can completely replace the building exterior surface materials.

[0052] The present invention also provides a method for making the BIPV photovoltaic building material as described above, the method comprising the following steps:

[0053] 1) Cut out avoidance holes on the back panel.

[0054] See also Figure 8 , prepare the backboard material. The backboard 1 in this embodiment is a rectangular structure. Draw the avoidance hole cutting line on the backboard 1, cut the avoidance hole 12 as required, and cut off the excess material at the four corners to facilitate the subsequent bending. If the backboard 1 is made of ordinary steel plate, this step can also include oxidation treatment of the backboard surface. Oxidation treatment of the backboard surface can improve the rust resistance of the backboard 1 and extend the service life of the backboard 1.

[0055] 2) Bend the periphery of the back panel to form a folded edge, and connect a fixed angle code to the folded edge.

[0056] The back plate 1 is bent to form a folded edge 11, and the height of the folded edge 11 is greater than or equal to the height of the junction box 5, so that the folded edge 11 forms an installation space for the junction box 5. After the folded edge 11 is set, the fixed angle bracket 3 is fixedly connected to the folded edge 11, and one side of the fixed angle bracket 3 is fixedly connected to the folded edge 11, and the other side of the fixed angle bracket 3 faces the outside of the back plate 1, which is used to connect with the building during installation.

[0057] 3) Bonding the photovoltaic power generation layer to the back panel using adhesive materials.

[0058] In this step, the photovoltaic power generation layer 2 is bonded and fixed on the back plate 1 by means of an adhesive material. In this embodiment, the adhesive material is a structural adhesive.

[0059] 4) A junction box is installed at the avoidance hole of the back panel.

[0060] In this step, the junction box 5 is installed at the avoidance hole 12 on the back panel 1, the wires in the photovoltaic power generation layer 2 pass through the avoidance hole 12 and connect to the junction box 5, and a wiring avoidance hole 111 is opened on the folded edge 11 adjacent to the junction box 5. The wires led out from the junction box 5 pass through the wiring avoidance hole 111 on the folded edge 11 to facilitate the connection of the BIPV photovoltaic building materials with the wiring terminals 7 after being installed on the building.

[0061] 5) A plurality of reinforcing fasteners are arranged around the photovoltaic power generation layer, and the reinforcing fasteners are in an L-shaped structure. The reinforcing fasteners include a fixing plate and a hook plate. The fixing plate of the reinforcing fasteners is fixedly connected to the folded edge, and the hook plate of the reinforcing fasteners abuts against the side of the photovoltaic power generation layer away from the back plate.

[0062] In this embodiment, the fixing plate 41 is riveted to the folded edge 11 of the back plate 1 by rivets 6, and a rubber pad 43 is also arranged between the hook plate 42 and the photovoltaic power generation layer 2 to avoid rigid contact between the hook plate 42 and the photovoltaic power generation layer 2.

[0063] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0064] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A BIPV photovoltaic building material, comprising a photovoltaic power generation layer and a substrate layer stacked in sequence, characterized in that: The base layer is a backboard made of a plastic material, the periphery of the backboard is provided with a folded edge, the folded edge is provided with a fixed angle code, one side of the fixed angle code is fixedly connected to the folded edge, and the other side of the fixed angle code is fixedly connected to the building; A plurality of reinforcing fasteners are arranged around the photovoltaic power generation layer, the reinforcing fasteners are in an L-shaped structure, and the reinforcing fasteners include a fixing plate and a hook plate, the fixing plate is fixedly connected to the folded edge, and the hook plate abuts against a side of the photovoltaic power generation layer away from the back plate; The photovoltaic power generation layer is a photovoltaic single-glass laminate or a photovoltaic double-glass laminate, and the photovoltaic single-glass laminate or the photovoltaic double-glass laminate is bonded and fixed to the back plate by an adhesive material.

2. The BIPV photovoltaic building material according to claim 1, characterized in that: The side edge of the back plate is provided with avoidance holes.

3. The BIPV photovoltaic building material according to claim 2, characterized in that: A junction box is provided at the avoidance hole.

4. The BIPV photovoltaic building material according to claim 3, characterized in that: The height of the folded edge is greater than or equal to the height of the junction box.

5. The BIPV photovoltaic building material according to claim 1, characterized in that: The folded edge is provided with a wiring avoidance hole.

6. The BIPV photovoltaic building material according to claim 1, characterized in that: A hollow structure for introducing refrigerant is provided inside the back plate, and an interface communicating with the hollow structure is provided around the back plate.

7. The BIPV photovoltaic building material according to claim 1, characterized in that: A plurality of reinforcing ribs are arranged on a side of the back plate opposite to the photovoltaic power generation layer.

8. The BIPV photovoltaic building material according to claim 1, characterized in that: The photovoltaic power generation layer includes a first adhesive material layer, an insulating material layer, a second adhesive material layer, a solar cell sheet, a third adhesive material layer and a panel layer stacked in sequence, and the photovoltaic power generation layer is bonded and fixed to the back panel via the first adhesive material layer by lamination.

9. The BIPV photovoltaic building material according to claim 1, characterized in that: A rubber pad is provided between the hook plate and the photovoltaic power generation layer.

10. A method for manufacturing a BIPV photovoltaic building material according to any one of claims 1 to 9, characterized in that: The steps include: 1) Cut out avoidance holes on the back panel; 2) Bend the periphery of the back panel to form a folded edge, and connect a fixed angle code to the folded edge; 3) Bonding the photovoltaic power generation layer to the back panel through bonding materials; 4) Install a junction box at the avoidance hole of the back panel; 5) A plurality of reinforcing fasteners are arranged around the photovoltaic power generation layer, wherein the reinforcing fasteners are in an L-shaped structure and include a fixing plate and a hook plate. The fixing plate of the reinforcing fasteners is fixedly connected to the folded edge, and the hook plate of the reinforcing fasteners abuts against the side of the photovoltaic power generation layer away from the back plate.

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