Building integrated photovoltaic building wall

Abstract

The invention provides a photovoltaic building integrated building wall, and belongs to the field of building walls. Comprising a concrete wall; the reinforcement cage is arranged in the concrete wall; the punched plate is arranged in the concrete wall, and the punched plate is mounted on the reinforcement cage; the keel frame is arranged on one side of the concrete wall; the connecting device is used for connecting the keel frame and the punching plate; and the photovoltaic module is connected with the side, deviating from the concrete wall, of the keel frame. The problem that in the prior art, a photovoltaic building integrated building wall is prone to causing safety risks is solved. The technical effects are that the bearing capacity is increased, the stress concentration is avoided, the probability of influence on the main body structure during maintenance and replacement is reduced, and the probability of potential safety hazards is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building wall, in particular to a building wall of building integrated photovoltaics. BACKGROUND

[0002] In the practical application of building integrated photovoltaics technology, the current main forms are roof photovoltaics and wall photovoltaics. Among them, the wall photovoltaics needs to be connected with the main structure due to the performance limitation of the existing lightweight wall material, and cannot be effectively combined with the lightweight wall such as AAC, which is in a separated state. This status quo has certain technical risks and restricts the application range of wall photovoltaics. Although the connection mode of the existing wall photovoltaics and the main structure has a clear force transmission path, there are problems such as insufficient bearing capacity of the lightweight wall material, which cannot meet the actual required bearing capacity, and all wall loads are transmitted to the main structure through the keel, so that the main structure connection point becomes a weak part. Once this part is damaged, the photovoltaic module will face the risk of falling off. In addition, since the photovoltaic module is directly connected with the concrete wall, the main body position bolt needs to be disassembled during maintenance and replacement, which will affect the main structure and further cause structural safety hazards. SUMMARY

[0003] The present application provides a building wall of building integrated photovoltaics to solve the defect that the existing building wall of building integrated photovoltaics is easy to cause safety risks, and realizes a building wall structure of building integrated photovoltaics with reduced safety risks.

[0004] The present application provides a building wall of building integrated photovoltaics, comprising: a concrete wall; a steel reinforcement cage arranged in the concrete wall; a punched plate arranged in the concrete wall, the punched plate being mounted on the steel reinforcement cage; a keel frame arranged on one side of the concrete wall; a connecting device for connecting the keel frame and the punched plate; a photovoltaic module connected with one side of the keel frame away from the concrete wall.

[0005] In addition, the building wall of building integrated photovoltaics according to the present application can also have the following additional technical features: In some embodiments of the present application, the keel frame comprises: a vertical keel connected with the punched plate through the connecting device; a horizontal keel connected with the vertical keel and perpendicular to each other, one side of the horizontal keel being connected with the photovoltaic module.

[0006] In some embodiments of the present application, the connecting device comprises: an angle steel, one side plate of which is connected with the vertical keel; a first connecting piece, which passes through the other side plate of the angle steel and the punched plate in sequence and is connected with the punched plate.

[0007] In some embodiments of the present application, further comprising: a steel sleeve core, which is connected with the side of the vertical keel, and one end of the horizontal keel is connected with the steel sleeve core.

[0008] In some embodiments of the present application, the connecting device further comprises: a steel gasket, which is arranged between the vertical keel and the angle steel; a connecting screw rod, which is used to connect the angle steel, the steel gasket and the vertical keel.

[0009] In some embodiments of the present application, the connecting device further comprises: a first auxiliary frame, one side of which is connected with the vertical keel, and the other side of which is connected with the photovoltaic module.

[0010] In some embodiments of the present application, the connecting device further comprises: a structural adhesive, which is used to connect the photovoltaic module with the side of the first auxiliary frame away from the vertical keel.

[0011] In some embodiments of the present application, the connecting device further comprises: a second auxiliary frame, one side of which is connected with the horizontal keel, and the other side of which is connected with the photovoltaic module; a photovoltaic base, first and second sides of which are connected with the second auxiliary frame, and a third side of which is connected with the vertical keel; a photovoltaic pressing plate, which is connected with a fourth side of the photovoltaic base, and cooperates with the photovoltaic base to clamp the photovoltaic module.

[0012] In some embodiments of the present application, the connecting device further comprises: a photovoltaic decorative cover, which is arranged on the photovoltaic pressing plate.

[0013] In some embodiments of the present application, further comprising: a waterproof layer, which is arranged on the side of the concrete wall and is located between the angle steel and the concrete wall.

[0014] In summary, the present application has the following beneficial technical effects: the point connection of the anchor bolt is changed into the surface connection of the punched plate through the arrangement of the punched plate, thereby increasing the bearing capacity while avoiding the occurrence of stress concentration; in addition, the direct connection of the photovoltaic module and the concrete wall is avoided through the arrangement of the connecting device combined with the keel structure, thereby reducing the probability of affecting the main structure during maintenance and replacement and reducing the probability of occurrence of safety hazards. BRIEF DESCRIPTION OF DRAWINGS

[0015] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of the preferred embodiments and are not intended to limit the scope of the application. Moreover, like reference numerals designate like parts throughout the several views in the drawings. In the drawings: Figure 1 A plan view of the connection of the keel frame and the photovoltaic module of the building-integrated photovoltaic building wall according to some embodiments of the present application is schematically shown.

[0016] Figure 2 An A-A cross-sectional view of the connection of the keel frame and the photovoltaic module of the building-integrated photovoltaic building wall according to some embodiments of the present application is schematically shown.

[0017] Figure 3 A B-B cross-sectional view of the connection of the keel frame and the photovoltaic module of the building-integrated photovoltaic building wall according to some embodiments of the present application is schematically shown.

[0018] Figure 4 A first partial cross-sectional view of the first structure of the building-integrated photovoltaic building wall according to some embodiments of the present application is schematically shown.

[0019] Figure 5 A second partial cross-sectional view of the first structure of the building-integrated photovoltaic building wall according to some embodiments of the present application is schematically shown.

[0020] Figure 6 A C-C cross-sectional view of the connection of the keel frame and the photovoltaic module of the building-integrated photovoltaic building wall according to some embodiments of the present application is schematically shown.

[0021] Figure 7 A local enlarged view I of the C-C cross-sectional view of the connection of the keel frame and the photovoltaic module of the building-integrated photovoltaic building wall according to some embodiments of the present application is schematically shown.

[0022] Figure 8 A local enlarged view II of the C-C cross-sectional view of the connection of the keel frame and the photovoltaic module of the building-integrated photovoltaic building wall according to some embodiments of the present application is schematically shown.

[0023] Figure 9 Fig. 3 is a partial enlarged view of the cross-sectional view of the connection between the keel frame and the photovoltaic module of the building-integrated photovoltaic building wall according to some embodiments of the present application.

[0024] Figure 10 Fig. 4 is a partial enlarged view of the cross-sectional view of the connection between the keel frame and the photovoltaic module of the building-integrated photovoltaic building wall according to some embodiments of the present application.

[0025] Figure 11 Fig. 5 is a first partial cross-sectional view of a second structure of the building-integrated photovoltaic building wall according to some embodiments of the present application.

[0026] Figure 12 Fig. 6 is a second partial cross-sectional view of the second structure of the building-integrated photovoltaic building wall according to some embodiments of the present application.

[0027] Figure 13 Fig. 7 is a perspective view of the building-integrated photovoltaic building wall without the photovoltaic module according to some embodiments of the present application.

[0028] Figure 14 Fig. 8 is a perspective view of the connection between the steel reinforcement cage and the punched plate of the building-integrated photovoltaic building wall according to some embodiments of the present application.

[0029] Reference Signs: 1, keel frame; 11, horizontal keel; 12, vertical keel; 13, caulking; 15, leveling layer; 16, waterproof layer; 2, punched plate; 3, concrete wall; 5, connecting device; 501, steel core; 502, angle steel; 503, connecting screw; 504, steel gasket; 505, second connecting piece; 506, pressing block; 507, structural adhesive; 508, double-sided tape; 509, sealant; 510, foam stick; 511, first auxiliary frame; 512, second auxiliary frame; 513, third connecting piece; 514, photovoltaic base; 515, fourth connecting piece; 516, photovoltaic pressing plate; 517, photovoltaic decorative cover; 518, first connecting piece; 6, steel reinforcement cage; 8, photovoltaic module. DETAILED DESCRIPTION

[0030] Exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be embodied in various forms without being limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present disclosure to those skilled in the art.

[0031] It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises", "comprising", "includes", "including" and "has" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order in which they are described unless specifically identified as an order dependent step. It is also to be understood that additional or alternative steps can be employed.

[0032] Although the terms first, second, third, etc. can be used herein to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first", "second", and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

[0033] Spatially relative terms, such as "inner", "outer", "inward", "outward", "lower", "bottom", "top", "upper", and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. Such spatially relative terms can be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0034] As Figures 1 to 14As shown, according to the embodiment of the first aspect of the application, a building wall of building integrated photovoltaics is provided, comprising a keel frame 1, a punched plate 2, a concrete wall 3, a steel cage 6, a photovoltaic module 8 and a connecting device 5, the punched plate 2 is arranged in the concrete wall 3, the steel cage 6 is arranged in the concrete wall 3, the punched plate 2 is installed on the steel cage 6, the keel frame 1 is arranged on one side of the concrete wall 3, the connecting device 5 is used to connect the keel frame 1 and the punched plate 2, and the photovoltaic module 8 is connected to the side of the keel frame 1 away from the concrete wall 3.

[0035] In the above embodiment, it should be noted that the concrete wall 3 is an AAC sandwich wall, the punched plate 2 is connected to the steel mesh on one side of the steel cage 6 by welding or screwing or clamping, and is connected to the side of the steel mesh away from the keel frame 1; the two surfaces of the keel frame 1 opposite to the punched plate 2 are parallel to each other; the photovoltaic module 8 is a photovoltaic panel structure for buildings in the prior art, and the specific structure comprises: The outermost layer is tempered glass with a light transmittance of more than 91% and an ultra-white tempering treatment, which on the one hand protects the internal power generation main body from dust, rain erosion and accidental collision, and on the other hand ensures sufficient sunlight to pass through, providing a light energy basis for photoelectric conversion.

[0036] The EVA (ethylene-vinyl acetate copolymer) adhesive film next to the tempered glass tightly bonds and fixes the tempered glass and the battery sheet below, and also plays a bonding and packaging role between the battery sheet and the back plate, isolating external water vapor, dust and other interference, and ensuring a stable working environment for the battery sheet. The quality of the material and the laminating process are directly related to the service life and power generation quality of the module.

[0037] The battery sheet is the core component, and the mainstream includes crystalline silicon solar cell sheets and thin-film solar cell sheets. The crystalline silicon cell sheet has relatively low equipment cost and high photoelectric conversion efficiency, and performs well in outdoor strong light; although the thin-film cell sheet has slightly lower photoelectric conversion efficiency, it has good weak light effect and can generate electricity in indoor ordinary light and other weak light environments. Both have their own advantages, and are responsible for converting light energy into electrical energy, which is the heart of power generation.

[0038] The back plate is located on the outermost layer of the back of the module, and is made of TPT, TPE and other anti-aging materials, which plays a key role in sealing, insulation and waterproofing, and blocks the erosion of the external environment on the internal circuit and battery sheet.

[0039] The aluminum alloy frame surrounds the periphery, not only enhances the overall structural strength, so that the module can withstand external forces such as wind load and snow load, but also provides convenience during installation, and cooperates with organic silicone glue to tightly package each part, improving the overall durability of the module.

[0040] The junction box is installed on the back of the photovoltaic module, like a current relay station, connecting the photovoltaic cells with other electrical equipment, realizing power and signal transmission, and built-in electrical protection equipment such as diode, etc., selected according to the type of cell sheet, automatically cutting off the short-circuit cell string when the module is short-circuited, preventing the entire system from burning out, and ensuring the safety of power use. The above structures are all existing structures, and will not be discussed in detail here.

[0041] The technical effects achieved by the above embodiments are: by the setting of the punched plate 2, the point connection of the anchor bolt becomes the surface connection of the punched plate 2, thereby increasing the bearing capacity while avoiding the occurrence of stress concentration, in addition, by the setting of the connecting device 5 combined with the keel structure, the direct connection of the photovoltaic module 8 and the concrete wall 3 is avoided, the probability of affecting the main structure during maintenance and replacement is reduced, and the probability of safety hazards occurring is reduced.

[0042] Optionally, as shown in Figures 1 to 12 The keel frame 1 includes horizontal keels 11 and vertical keels 12, the vertical keels 12 are connected with the punched plate 2 through the connecting device 5, the horizontal keels 11 and the vertical keels 12 are connected with each other and perpendicular to each other, and one side of the horizontal keel 11 is connected with the photovoltaic module 8.

[0043] In the above optional embodiment, it should be noted that the horizontal keels 11 and the vertical keels 12 are both multiple, and the multiple horizontal keels 11 and the multiple vertical keels 12 are spliced to form a rectangular grid structure.

[0044] The beneficial effects of the above optional embodiment are: through the vertical connection structure of the horizontal keel 11 and the vertical keel 12, a stable grid support system is formed; the vertical combination of the horizontal keel 11 and the vertical keel 12 improves the structural rigidity and can effectively disperse the load of the photovoltaic module 8. The photovoltaic module 8 is connected to one side of the horizontal keel 11, the load can be transmitted to the vertical keel 12 through the horizontal keel 11, and then conducted to the punched plate 2 through the connecting device 5, the force transmission path is clear and dispersed, and the local stress concentration is reduced.

[0045] Optionally, as shown in Figures 4 to 12 The connecting device 5 includes an angle steel 502 and a first connecting piece 518, one side plate of the angle steel 502 is connected with the vertical keel 12, and the first connecting piece 518 is connected with the punched plate 2 after passing through the other side plate of the angle steel 502 and the concrete wall 3 in sequence.

[0046] In the above optional embodiment, it should be noted that the first connecting piece 518 is a self-tapping screw, and each angle steel 502 is connected with the punched plate 2 through at least two self-tapping screws. At least one angle steel 502 is arranged on each side of each vertical keel 12, and each angle steel 502 and the corresponding vertical keel 12 are connected through screwing or welding.

[0047] The beneficial effects of the above-mentioned optional embodiment are: the reliability and stability of the connection between the vertical keel 12 and the punched plate 2 are ensured through the arrangement of the first connecting piece 518 and the angle steel 502; the angle steel 502 is connected to the vertical keel 12 and the concrete wall 3 through two side plates, forming a rigid force transmission structure of vertical keel, angle steel 502 and then to the concrete wall 3, cooperating with the fixing mode of at least two self-tapping screws, avoiding the loosening risk of single-point connection, and significantly improving the pull-out and shear performance of the connection joint.

[0048] The self-tapping screw is connected to the punched plate 2 after passing through the angle steel 502 and the concrete wall 3 in sequence, so that the load is dispersed to the concrete wall 3 and the punched plate 2 through the angle steel 502, the single force transmission mode is changed, the local stress load of the concrete wall is reduced, and the structural deformation risk is reduced.

[0049] At least one angle steel 502 is arranged on each side of each vertical keel 12, forming a symmetrical force system to avoid deflection of the vertical keel 12 due to unilateral force.

[0050] Optionally, as shown in Figure 5 and Figure 12 , it further includes a steel sleeve core 501 connected to the side surface of the vertical keel 12, and one end of the horizontal keel 11 is connected to the steel sleeve core 501.

[0051] In the above-mentioned optional embodiment, it should be noted that specifically, each horizontal keel 11 is connected to the corresponding vertical keel 12 through the steel sleeve core 501; the steel sleeve core 501 and the vertical keel 12 are welded, and the steel sleeve core 501 and the horizontal keel 11 are welded or screwed.

[0052] The beneficial effects of the above-mentioned optional embodiment are: the reliable connection of the horizontal keel 11 and the vertical keel 12 is ensured through the arrangement of the steel sleeve core 501.

[0053] Specifically, the steel sleeve core serves as an intermediary to form a rigid connection with the vertical keel 12 and the horizontal keel 11, and the welding connection between the steel sleeve core 501 and the vertical keel 12 ensures the basic strength.

[0054] The steel sleeve core 501 increases the contact area of the horizontal keel 11 and the vertical keel 12, so that the photovoltaic module load is uniformly transmitted through the steel sleeve core 501, avoiding local stress concentration; the independent connection design forms a dispersed force transmission system, improving the structural damage redundancy.

[0055] The rigid support of the steel sleeve core 501 improves the overall rigidity of the keel frame, enhances the wind load and seismic load capacity; the screwing method facilitates the separate disassembly and replacement of the horizontal keel 11, avoiding damage to the vertical keel 12 and the surrounding structure.

[0056] Optionally, as shown in Figure 4 and Figure 11As shown, the connecting device 5 further comprises a steel gasket 504 arranged between the vertical keel 12 and the angle steel 502, and a connecting screw 503 for connecting the angle steel 502, the steel gasket 504 and the vertical keel 12.

[0057] In the above optional embodiment, it should be noted that specifically, each vertical keel 12 is provided with a plurality of angle steels 502 on both sides, and the angle steels 502 on both sides are arranged in one-to-one correspondence, and the connecting screw 503 is inserted into the structure composed of the two angle steels 502, the vertical keel 12 and the steel gasket 504 and connected by a nut.

[0058] The above optional embodiment has the beneficial effect that the steel gasket 504 is arranged between the vertical keel 12 and the angle steel 502, and the three are connected with the connecting screw 503, which can increase the contact area, disperse the stress at the connection point, and avoid local deformation of the vertical keel 12 under pressure.

[0059] Optionally, as shown in FIG. 5, the connecting device 5 further comprises a first auxiliary frame 511, one side of the first auxiliary frame 511 being connected with the vertical keel 12, and the other side of the first auxiliary frame 511 being connected with the photovoltaic module 8. Figures 4 to 10

[0060] In the above optional embodiment, it should be noted that the connecting device 5 further comprises a pressing block 506 and a second connecting piece 505, the pressing block 506 being connected with the vertical keel 12 through the second connecting piece 505, and one side wall of the first auxiliary frame 511 being located between the pressing block 506 and the vertical keel 12; the first auxiliary frame 511 is an aluminum alloy auxiliary frame, and the pressing block 506 is an aluminum alloy pressing block 506.

[0061] The above optional embodiment has the beneficial effect that the first auxiliary frame 511 is connected with the vertical keel 12 on one side and connected with the photovoltaic module 8 on the other side, which increases the connection contact area between the vertical keel 12 and the photovoltaic module 8 and reduces the stress intensity per unit area. In addition, the first auxiliary frame 511 can serve as an independent connection node, so that only the auxiliary frame related components need to be operated during maintenance, avoiding direct contact with the keel body and reducing the probability of affecting the main structure during maintenance and replacement and the probability of safety hazards.

[0062] Optionally, as shown in FIG. 5, the connecting device 5 further comprises a structural adhesive 507, one side of the first auxiliary frame 511 away from the vertical keel 12 being connected with the photovoltaic module 8 through the structural adhesive 507. Figures 4 to 10

[0063] ​​In the optional embodiment, it is to be explained that the double-sided tape 508 is arranged between the first auxiliary frame 511 and the photovoltaic module 8, the sealant 509 is arranged between the two groups of photovoltaic modules 8 to connect the two groups of photovoltaic modules 8, and the foam rod 510 is located in the space enclosed by the second connecting member 505, the sealant 509 and the first auxiliary frame 511. The sealant 509 is a silicone weatherproof sealant 509.

[0064] The optional embodiment has the beneficial effect that the stress during load transmission is buffered by the structural adhesive 507, the damage of the rigid contact to the photovoltaic module 8 is reduced, and the local stress is dispersed.

[0065] Optionally, as shown in Figure 11 and Figure 12 , the connecting device 5 further comprises a second auxiliary frame 512, a photovoltaic base 514 and a photovoltaic pressing plate 516. One side of the second auxiliary frame 512 is connected with the cross keel 11, and the other side of the second auxiliary frame 512 is connected with the photovoltaic module 8. The first side and the second side of the photovoltaic base 514 are connected with the second auxiliary frame 512. The third side of the photovoltaic base 514 is connected with the vertical keel 12. The fourth side of the photovoltaic base 514 is connected with the photovoltaic pressing plate 516. The photovoltaic pressing plate 516 and the photovoltaic base 514 cooperate to clamp the photovoltaic module 8.

[0066] In the optional embodiment, it is to be explained that the double-sided tape 508 is arranged between the first auxiliary frame 511 and the photovoltaic module 8, the sealant 509 is arranged between the two groups of photovoltaic modules 8 to connect the two groups of photovoltaic modules 8, and the foam rod 510 is located in the space enclosed by the second connecting member 505, the sealant 509 and the first auxiliary frame 511. The sealant 509 is a silicone weatherproof sealant 509.

[0067] The optional embodiment has the beneficial effect that the second auxiliary frame 512 connects the cross keel 11 and the photovoltaic module 8 respectively to form a bidirectional force transmission path, cooperates with the connection of the photovoltaic module 8 and the vertical keel 12 to realize multi-point support of the module, and avoids single-point overload.

[0068] Optionally, as shown in Figure 11 and Figure 12 , the connecting device 5 further comprises a photovoltaic decorative cover 517, and the photovoltaic decorative cover 517 covers the photovoltaic pressing plate 516.

[0069] In the optional embodiment, it is to be explained that the photovoltaic decorative cover 517 is clamped, screwed or bonded with the photovoltaic pressing plate 516.

[0070] The optional embodiment has the beneficial effect that the photovoltaic decorative cover 517 is arranged to ensure the aesthetic performance.

[0071] Optionally, as shown in Figures 1 to 12As shown, the waterproof layer 16 is arranged on the side of the concrete wall 3 between the angle steel 502 and the concrete wall 3.

[0072] The optional embodiment has the beneficial effect that the waterproof layer 16 effectively prevents water from penetrating from the joint between the angle steel 502 and the concrete wall 3.

[0073] The above is only a preferred embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A building wall system integrating photovoltaics and architecture, characterized in that, include: Concrete wall (3); A steel reinforcement cage (6) is installed inside the concrete wall (3); A perforated plate (2) is disposed within the concrete wall (3) and the perforated plate (2) is installed on the reinforcing cage (6); A keel frame (1) is installed on one side of the concrete wall (3); A connecting device (5) is used to connect the keel frame (1) and the perforated plate (2). A photovoltaic module (8) is connected to the side of the keel frame (1) away from the concrete wall (3).

2. The building-integrated photovoltaic (BIPV) wall structure according to claim 1, characterized in that, The keel frame (1) includes: Vertical keel (12), the vertical keel (12) is connected to the perforated plate (2) through the connecting device (5); A horizontal keel (11) is connected to and perpendicular to the vertical keel (12). The photovoltaic module (8) is connected to one side of the horizontal keel (11).

3. The building-integrated photovoltaic (BIPV) wall structure according to claim 2, characterized in that, The connecting device (5) includes: Angle steel (502), one side plate of which is connected to the vertical keel (12); The first connector (518) passes through the other side plate of the angle steel (502) and the concrete wall (3) in sequence and is then connected to the perforated plate (2).

4. The building-integrated photovoltaic (BIPV) wall structure according to claim 2, characterized in that, Also includes: A steel sleeve core (501) is connected to the side of the vertical keel (12), and one end of the horizontal keel (11) is connected to the steel sleeve core (501).

5. The building-integrated photovoltaic (BIPV) wall structure according to claim 3, characterized in that, The connecting device (5) further includes: A steel gasket (504) is disposed between the vertical keel (12) and the angle steel (502); A connecting screw (503) is used to connect the angle steel (502), the steel washer (504), and the vertical keel (12).

6. The building-integrated photovoltaic (BIPV) wall structure according to claim 2, characterized in that, The connecting device (5) further includes: The first subframe (511) is connected to the vertical keel (12) on one side and to the photovoltaic module (8) on the other side.

7. The photovoltaic building integrated wall according to claim 6, characterized in that, The connecting device (5) further includes: Structural adhesive (507) is used to connect the first subframe (511) to the photovoltaic module (8) on the side opposite to the vertical keel (12).

8. The building-integrated photovoltaic (BIPV) wall structure according to claim 2, characterized in that, The connecting device (5) further includes: The second subframe (512) has one side connected to the horizontal keel (11) and the other side connected to the photovoltaic module (8). A photovoltaic base (514) is provided, with its first and second sides connected to the second subframe (512), and its third side connected to the vertical keel (12). A photovoltaic pressure plate (516) is connected to the fourth side of the photovoltaic base (514), and the photovoltaic pressure plate (516) and the photovoltaic base (514) cooperate to clamp the photovoltaic module (8).

9. The building-integrated photovoltaic (BIPV) wall structure according to claim 8, characterized in that, The connecting device (5) further includes: A photovoltaic decorative cover (517) is placed over the photovoltaic pressure plate (516).

10. The building-integrated photovoltaic (BIPV) wall structure according to claim 3, characterized in that, Also includes: A waterproof layer (16) is provided on the side of the concrete wall (3) and is located between the angle steel (502) and the concrete wall (3).

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