Building photovoltaic integrated prefabricated wallboard

Abstract

The utility model discloses a kind of building photovoltaic integrated prefabricated wallboard, it is related to prefabricated wall version technical field, the utility model includes wallboard main part, steel bar truss is connected in the inside middle of wallboard main part, mounting plate is connected with the outer surface of wallboard main part, and first pull holding muscle and second pull holding muscle are fixed with the both sides of mounting plate back, first support muscle and second support muscle are connected with the both sides of second pull holding muscle, mounting bolt is connected with the both sides of the outer surface of mounting plate. The utility model is provided with mounting plate and mounting bolt, mounting plate and wallboard main part are fixed in advance using embedding technology, without drilling in later construction to mounting bolt assembly photovoltaic curtain wall keel of wallboard main part, effectively guarantee the structural integrity of wallboard main part, reduce waterproof sealing construction process, reduce manpower and time cost.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated wall panel technology, specifically a building photovoltaic integrated prefabricated wall panel. Background Technology

[0002] Building-integrated photovoltaics (BIPV) is a green building form that deeply integrates photovoltaic power generation technology with building design and construction. Its core is to utilize the surface space of building exterior walls, roofs, and other structures to integrate photovoltaic curtain walls, photovoltaic modules, and other power generation devices. This allows buildings to generate solar energy while fulfilling basic functions such as providing shelter from wind and rain and spatial partitioning, providing clean energy for the building itself or the power grid. It aligns with the trend of low-carbon building development and efficiently utilizes building surface area, reducing the land occupation of traditional photovoltaic power stations. It has become one of the important development directions of modern green buildings, with the application of exterior photovoltaic curtain walls being a key scenario for BIPV.

[0003] Precast wall panels are core wall components of prefabricated buildings. They refer to wall units prefabricated in factories according to design requirements through standardized production processes, combining concrete, reinforcing steel (such as vertical and horizontal bars), and insulation materials. Compared to traditional cast-in-place walls, precast wall panels offer advantages such as stable production quality, convenient on-site installation, shorter construction cycles, and reduced on-site wet work, significantly improving construction efficiency and quality. They are widely used in both interior and exterior building walls, and in building-integrated photovoltaics (BIPV) applications, exterior precast wall panels serve as a crucial foundation for photovoltaic curtain wall installation.

[0004] In building-integrated photovoltaic (BIPV) exterior wall applications, photovoltaic curtain walls require a keel as the installation base. In existing technologies, the keel is usually connected to the exterior wall through fastening structures such as anchors and expansion bolts. During construction, holes must first be drilled in the exterior wall before the fastening structure is driven in to fix the keel. First, the holes formed by drilling can easily damage the integrity of the wall panel, becoming a significant hidden danger of water leakage in the exterior wall. Second, to avoid the risk of water leakage, additional waterproofing treatment is required, namely, external waterproof sealing between photovoltaic curtain walls and internal waterproof sealing of the fastening structure at the drilled holes. This not only consumes a lot of manpower and time, increasing construction costs and timelines, but may also lead to the risk of water seepage later due to inadequate waterproofing treatment. Utility Model Content

[0005] Based on this, the purpose of this utility model is to provide a building photovoltaic integrated prefabricated wall panel to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a prefabricated wall panel for building photovoltaic integration, comprising a wall panel body, a steel truss connected in the middle inside the wall panel body, an mounting plate connected to the outer surface of the wall panel body, and a first tie bar and a second tie bar fixed on both sides of the back of the mounting plate, a first support bar and a second support bar connected to both sides of the second tie bar, and mounting bolts connected to both sides of the outer surface of the mounting plate.

[0007] By adopting the above technical solution, the mounting plate and mounting bolts are pre-integrated into the main body of the wall panel, eliminating the need for subsequent drilling to assemble the photovoltaic curtain wall keel, reducing the risk of damage and leakage to the main body of the wall panel; at the same time, the steel truss, tie rods and support rods form a synergistic force-bearing structure, which can specifically bear the tensile and thrust forces transmitted by the keel and disperse the force to the inside of the wall panel, avoiding the stress concentration on the mounting plate that could lead to deformation or detachment, and ensuring the long-term installation stability of the photovoltaic curtain wall.

[0008] Furthermore, horizontal reinforcing bars are passed through both sides of the wall panel body, and vertical reinforcing bars are passed through the top and bottom of the wall panel body, and both the vertical and horizontal reinforcing bars are HPB300 steel bars.

[0009] By adopting the above technical solution, HPB300 steel bars have good plasticity and weldability. The vertical and horizontal bars penetrate the main body of the wall panel to form a basic distribution bar skeleton, which can provide uniform overall support for the main body of the wall panel, ensure the stability of the wall panel itself, and at the same time provide a reliable connection carrier for load-bearing components such as steel trusses and tie bars, laying the foundation for subsequent force transmission.

[0010] Furthermore, the steel truss, the first tie bar, the second tie bar, the first support bar, and the second support bar are all HRB400 or HRB400E steel bars.

[0011] By adopting the above technical solutions, HRB400 / HRB400E steel bars are high-strength ribbed steel bars. Their tensile strength, compressive strength and crack resistance are significantly better than ordinary steel bars. They can meet the load requirements of photovoltaic curtain wall keel, avoid deformation or breakage of the steel bars due to excessive force, ensure reliable force transmission process, and further improve the overall load-bearing capacity and durability of the wall panel.

[0012] Furthermore, both the first and second tie bars are connected to the transverse reinforcement.

[0013] By adopting the above technical solution, the external tensile force borne by the tie rod can be transferred to the distribution bar network composed of horizontal bars, so that the tensile force is distributed from the installation plate to the entire wall panel body, rather than concentrated in a single part, avoiding local stress overload that could damage the wall panel structure. At the same time, it strengthens the connection between the tie rod and the wall panel foundation frame, and improves the continuity of force transmission.

[0014] Furthermore, both the first and second tie bars are J-shaped.

[0015] By adopting the above technical solution, the hook part of the J-shaped structure can form a firm hook connection with the horizontal rib. Compared with the straight rib connection, it can effectively prevent the tie rod from separating from the horizontal rib when under force, thus improving the connection stability. At the same time, the hook design facilitates the positioning and installation during factory prefabrication, reduces assembly errors, and ensures the connection accuracy between the tie rod and the horizontal rib.

[0016] Furthermore, the first and second support ribs are distributed perpendicularly to the first tension rib.

[0017] By adopting the above technical solution, the tie rods bear the external tensile force away from the wall panel in the transverse direction, and the support rods bear the thrust force close to the wall panel in the longitudinal direction. The vertical distribution of the two can fully cover the different directions of force that the mounting plate may be subjected to, avoid the support blind spot caused by the single direction of force, and ensure that the mounting plate can maintain its positional stability under various loads.

[0018] Furthermore, the steel truss is fixedly connected to the horizontal reinforcement by welding, and the first and second support bars are fixedly connected to the horizontal reinforcement by binding with steel binding wire.

[0019] By adopting the above technical solutions, welding connection can make the steel truss and the horizontal bar rigidly fixed, strengthen the local compressive and tensile strength of the support anchor point, and adapt to the concentrated load transmitted by the truss; binding connection has both convenience and stability, which can not only ensure the reliable connection between the support bar and the horizontal bar, but also facilitate the rapid assembly during factory prefabrication, balancing the strength requirements of non-critical parts and construction efficiency.

[0020] Furthermore, both the first and second tie bars are fixedly connected to the mounting plate by welding, and both the first and second support bars are fixedly connected to the second tie bar by welding.

[0021] By adopting the above technical solutions, welding connections can eliminate the connection gaps between the tie bars and the mounting plate, and between the support bars and the second tie bars, ensuring direct force transmission and avoiding force loss or local stress concentration caused by loose connections. At the same time, the integrated structure formed by welding can improve the integrity of the entire load-bearing system, so that the load on the mounting plate can be smoothly transmitted to the tie bars and support bars, and then diffused to the distribution bars and steel truss.

[0022] Furthermore, the mounting bolts are friction-type high-strength bolts, and the mounting bolts are fixedly connected to the mounting plate by welding.

[0023] By adopting the above technical solutions, friction-type high-strength bolts rely on the friction force generated by the bolt preload to transfer loads. They have strong pull-out and shear resistance and excellent fatigue resistance, making them suitable for dynamic loads caused by wind loads and temperature changes during long-term use of photovoltaic curtain walls. Welding fixation makes the bolts and mounting plates form an inseparable whole, preventing bolt loosening from causing keel installation failure. At the same time, combined with the pre-embedded process, there is no need for subsequent drilling, further reducing the risk of water leakage in the wall panels.

[0024] In summary, the present invention has the following main advantages: 1. This utility model uses a pre-embedded process to fix the mounting plate to the main body of the wall panel by setting up the mounting plate and mounting bolts. There is no need to drill holes in the main body of the wall panel during the later construction. The keel of the photovoltaic curtain wall can be assembled by mounting bolts, which effectively ensures the structural integrity of the main body of the wall panel, reduces the construction process of waterproof sealing, and reduces labor and time costs. 2. By setting up the first tie bar, the second tie bar, the first support bar, and the second support bar, this utility model can specifically bear the forces acting on the mounting plate in different directions. The first tie bar and the second tie bar can bear the external tensile force away from the main body of the wall panel, and the first support bar and the second support bar can bear the thrust force in the direction of the main body of the wall panel. These forces are stably transmitted to the distribution bars composed of vertical bars, horizontal bars, and structural bars, which prevents the mounting plate from deforming or falling off due to concentrated force and ensures the stability of the photovoltaic curtain wall keel after installation. 3. By setting up a steel truss, this utility model can reinforce the pre-embedded steel structure support anchor points inside the wall panel body used for installing the photovoltaic curtain wall keel, significantly improving the local compressive and tensile strength at the support anchor points, providing a more reliable bearing foundation for the force transmitted by the installation plate, tie rods and support rods, further optimizing the stress performance of the wall panel body, and ensuring the structural stability of the photovoltaic curtain wall during long-term use. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the vertical rib structure of this utility model; Figure 3 This is a schematic diagram of the steel truss structure of this utility model; Figure 4 This is a schematic diagram of the back structure of the steel truss of this utility model; Figure 5 This is a schematic diagram of the back structure of the mounting plate of this utility model.

[0026] In the diagram: 1. Main wall panel; 2. Vertical reinforcement; 3. Horizontal reinforcement; 4. Steel truss; 5. Mounting plate; 6. First tie bar; 7. Second tie bar; 8. First support bar; 9. Second support bar; 10. Mounting bolts. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0028] The embodiments of this utility model will be described below based on its overall structure.

[0029] Example 1:

[0030] A type of building-integrated photovoltaic prefabricated wall panel, such as Figures 1-5 As shown, the structure includes a wall panel body 1, with a steel truss 4 connected in the middle inside the wall panel body 1. An mounting plate 5 is connected to the outer surface of the wall panel body 1. First tie bars 6 and second tie bars 7 are fixed to both sides of the back of the mounting plate 5. Both the first tie bars 6 and second tie bars 7 are in a "J" shape and are connected to the horizontal reinforcement 3. First support bars 8 and second support bars 9 are connected to both sides of the second tie bars 7. The first support bars 8 and second support bars 9 are perpendicular to the first tie bars 6. The steel truss 4, first tie bars 6, second tie bars 7, first support bars 8, and second support bars 9 are all HRB400 or HRB400E steel bars. Mounting bolts 10 are connected to both sides of the outer surface of the mounting plate 5. Construction workers do not need to drill holes in the wall panel body 1; they can directly connect the photovoltaic curtain wall's keel to the pre-embedded mounting bolts 10 on the outer surface of the wall panel body 1. After the photovoltaic curtain wall is put into use, if the keel moves away from the wall panel... When an external tensile force is applied to the main body 1, the first tension rib 6 and the second tension rib 7 directly bear the tensile force and sequentially transfer it to the distribution ribs composed of horizontal ribs 3 and the pre-welded steel truss 4. The distribution ribs and the steel truss 4 jointly bear the tensile force, preventing the mounting plate 5 from deforming or falling off due to concentrated stress. If the keel applies a thrust towards the wall panel main body 1, the first support rib 8 and the second support rib 9 bear the thrust and similarly transfer it to the distribution ribs and the steel truss 4. The distributed ribs and the steel truss 4 work together to balance the thrust, ensuring the stability of the mounting plate 5. At the same time, since the mounting plate 5 and the mounting bolts 10 are both integrated with the wall panel main body 1 through a pre-embedded process, the integrity of the wall panel main body 1 is not damaged, reducing the workload of waterproofing and sealing, and lowering labor and time costs. Furthermore, the reinforcement of the support anchor points by the steel truss 4 further optimizes the stress performance of the wall panel main body 1, ensuring the structural stability of the photovoltaic curtain wall during long-term use.

[0031] See Figure 1 and Figure 2In the above embodiment, horizontal reinforcing bars 3 are passed through both sides of the wall panel body 1, and vertical reinforcing bars 2 are passed through the top and bottom of the wall panel body 1. Both the vertical reinforcing bars 2 and the horizontal reinforcing bars 3 are HPB300 steel bars. The workers first build the basic steel reinforcement skeleton of the wall panel body 1. The workers then combine the vertical reinforcing bars 2 and horizontal reinforcing bars of HPB300 material with the matching structural reinforcing bars to form distribution bars, thus completing the construction of the basic load-bearing skeleton in the prior art.

[0032] Example 2:

[0033] Based on the above embodiment one, in order to increase the connection stability of the embedded structure, the following settings are now adopted.

[0034] See Figures 2-5 In the above embodiment, the steel truss 4 is fixedly connected to the transverse reinforcement 3 by welding. The first support reinforcement 8 and the second support reinforcement 9 are fixedly connected to the transverse reinforcement 3 by binding with steel wire. The first tension reinforcement 6 and the second tension reinforcement 7 are both fixedly connected to the mounting plate 5 by welding. The first support reinforcement 8 and the second support reinforcement 9 are both fixedly connected to the second tension reinforcement 7 by welding. On the basis of the already erected distribution reinforcement, the steel truss 4 made of HRB400 or HRB400E material is assembled. The workers fix the steel truss 4 to the transverse reinforcement 3 by welding, so that the steel truss 4 and the distribution reinforcement form a stable connection. Subsequently, the workers install friction-type high-strength bolts. As mounting bolts 10, they are fixed to both sides of the outer surface of the mounting plate 5 by welding. The workers also fix one end of the first tie bar 6 and the second tie bar 7 made of HRB400 or HRB400E material to both sides of the back of the mounting plate 5 by welding. Then, the workers hook the first tie bar 6 and the second tie bar 7 to the horizontal bar 3, and then weld the first support bar 8 and the second support bar 9 to both sides of the second tie bar 7. After that, the workers use steel binding wire to tie the first support bar 8, the second support bar 9 and the horizontal bar 3 to form a force transmission network for the mounting plate 5, so as to ensure that the mounting plate 5 can bear the force in different directions and transmit it to the distribution bar and the steel truss 4.

[0035] Example 3:

[0036] Based on the above embodiment one, in order to ensure the stability of subsequent keel installation, the following settings are now adopted.

[0037] See Figures 1-3 In the above embodiment, the mounting bolt 10 is a friction-type high-strength bolt. The friction-type high-strength bolt itself is made of high-strength steel. With the installation method of pre-tightening force control, it can provide connection strength and pull-out and shear resistance far exceeding that of ordinary bolts. The mounting bolt 10 is fixedly connected to the mounting plate 5 by welding, which increases the connection stability.

[0038] The implementation principle of this utility model is as follows: First, in the factory prefabrication stage, the workers first build the basic steel reinforcement skeleton of the wall panel body 1. The workers then combine the vertical bars 2 and horizontal bars 3 of HPB300 material with the supporting structural steel bars (some of which are not recorded in the text and are known in the prior art) to form the distribution bars, thus completing the construction of the basic load-bearing skeleton in the prior art. Next, based on the already constructed distribution reinforcement, a steel truss 4 made of HRB400 or HRB400E material is assembled. The workers fix the steel truss 4 to the horizontal reinforcement 3 by welding, so that the steel truss 4 and the distribution reinforcement form a stable connection. Then, the workers use friction-type high-strength bolts as mounting bolts 10 and fix them to both sides of the outer surface of the mounting plate 5 by welding. The workers also fix one end of the first tie bar 6 and the second tie bar 7 made of HRB400 or HRB400E material to both sides of the back of the mounting plate 5 by welding. Then, the workers hook the first tie bar 6 and the second tie bar 7 to the horizontal reinforcement 3, and then weld the first support bar 8 and the second support bar 9 to both sides of the second tie bar 7. After that, the workers use steel binding wire to tie and fix the first support bar 8, the second support bar 9 and the horizontal reinforcement 3, thereby constructing a force transmission network for the mounting plate 5, ensuring that the mounting plate 5 can bear the force in different directions and transmit it to the distribution reinforcement and the steel truss 4. At this time, the distribution reinforcement and embedded components required for the wall panel body 1 have all been constructed and fixed. After that, the workers poured concrete into the mold where the distribution bars and embedded components had been fixed. After the concrete cured and solidified, a complete wall panel body 1 was formed, so that all the steel reinforcement components and the embedded mounting plates 5 and mounting bolts 10 were firmly connected to the wall panel body 1. During the on-site installation of the photovoltaic curtain wall, construction workers do not need to drill holes in the main body 1 of the wall panel. They can directly connect the keel of the photovoltaic curtain wall to the pre-embedded mounting bolts 10 on the outer surface of the main body 1 of the wall panel. After the photovoltaic curtain wall is put into use, if the keel applies an external tensile force away from the main body 1 of the wall panel, the first tie rod 6 and the second tie rod 7 will directly bear the tensile force and transfer it sequentially to the distribution ribs composed of horizontal ribs 3 and the pre-welded steel truss 4. The distribution ribs and the steel truss 4 jointly bear the tensile force, preventing the mounting plate 5 from deforming or falling off due to concentrated stress. If the keel moves closer to the main body 1 of the wall panel, When a thrust is applied in a certain direction, the first support rib 8 and the second support rib 9 will bear the thrust and also transfer the thrust to the distribution rib and the steel truss 4. The distribution rib and the steel truss 4 work together to balance the thrust and ensure the stability of the mounting plate 5. At the same time, since the mounting plate 5 and the mounting bolts 10 are combined with the wall panel body 1 through a pre-embedded process, the integrity of the wall panel body 1 is not damaged, the intensity of waterproofing and sealing work is reduced, and the labor and time costs are reduced. Furthermore, the reinforcement of the support anchor points by the steel truss 4 further optimizes the stress performance of the wall panel body 1 and ensures the structural stability of the photovoltaic curtain wall during long-term use.

[0039] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A building-integrated photovoltaic (BIPV) prefabricated wall panel, comprising a wall panel body (1), characterized in that: The wall panel body (1) is connected to a steel truss (4) in the middle. The wall panel body (1) is connected to an installation plate (5) on the outer surface. The installation plate (5) has a first tie bar (6) and a second tie bar (7) fixed on both sides of its back. The second tie bar (7) has a first support bar (8) and a second support bar (9) connected on both sides. The installation plate (5) has installation bolts (10) connected on both sides of its outer surface.

2. The building-integrated photovoltaic prefabricated wall panel according to claim 1, characterized in that: The wall panel body (1) has horizontal reinforcing bars (3) running through both sides, and vertical reinforcing bars (2) running through the top and bottom of the wall panel body (1), and both the vertical reinforcing bars (2) and the horizontal reinforcing bars (3) are HPB300 steel bars.

3. The prefabricated building-integrated photovoltaic wall panel according to claim 1, characterized in that: The steel truss (4), the first tie bar (6), the second tie bar (7), the first support bar (8), and the second support bar (9) are all HRB400 or HRB400E steel bars.

4. The building-integrated photovoltaic prefabricated wall panel according to claim 2, characterized in that: The first tie bar (6) and the second tie bar (7) are both connected to the transverse bar (3).

5. The building-integrated photovoltaic prefabricated wall panel according to claim 4, characterized in that: The first tie bar (6) and the second tie bar (7) are both in the shape of "J".

6. The building-integrated photovoltaic prefabricated wall panel according to claim 5, characterized in that: The first support bar (8) and the second support bar (9) are distributed perpendicularly to the first tension bar (6).

7. The building-integrated photovoltaic prefabricated wall panel according to claim 2, characterized in that: The steel truss (4) is fixedly connected to the horizontal bar (3) by welding, and the first support bar (8) and the second support bar (9) are fixedly connected to the horizontal bar (3) by binding with steel bar binding wire.

8. The building-integrated photovoltaic prefabricated wall panel according to claim 7, characterized in that: The first tension rib (6) and the second tension rib (7) are both fixedly connected to the mounting plate (5) by welding, and the first support rib (8) and the second support rib (9) are both fixedly connected to the second tension rib (7) by welding.

9. The building-integrated photovoltaic prefabricated wall panel according to claim 1, characterized in that: The mounting bolt (10) is a friction-type high-strength bolt, and the mounting bolt (10) is fixedly connected to the mounting plate (5) by welding.

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