A new type of segmented support structure and assembly compression element combined BIPV roof

Abstract

The application relates to the field of building photovoltaic integration, and discloses a novel BIPV roof with a segmented support structure and an assembly compression piece combination, which comprises a photovoltaic assembly, a metal roof, a lock seam reinforcing buckle, a positioning V-shaped piece, a photovoltaic assembly compression piece, a segmented support structure, an elastic buffer pad and a fastening bolt. The photovoltaic assembly is horizontally laid on the metal roof, and the overhanging part is fixed on the segmented support structure through the photovoltaic assembly compression piece. The segmented support structure is arranged in an intermittent mode and is fixed above the metal roof through the lock seam reinforcing buckle. The segmented support structure and the clamp combination mode are adopted, so that the photovoltaic assembly and the metal roof form a whole in cooperative stress, and the wind and snow resistance of the roof is remarkably improved. Meanwhile, the construction material is small in quantity, low in cost, convenient to install, compatible with framed and frameless photovoltaic assemblies, and high in economy and practicability.

Description

Technical Field

[0001] This invention relates to the field of building-integrated photovoltaics (BIPV), and more particularly to a novel BIPV roof composed of a segmented support structure and component clamping components. Background Technology

[0002] In existing building-integrated photovoltaic (BIPV) systems, especially those applied to metal roofs, the following technical problems are commonly encountered: 1. High material costs: Traditional BAPV (attached photovoltaic system) or some BIPV systems often use long guide rails as support structures, which consume a large amount of materials, resulting in high overall system costs.

[0003] 2. Poor load-bearing performance: Photovoltaic modules and metal roofs are often independent load-bearing systems, failing to form an effective synergistic load-bearing structure. Under loads such as wind and snow, stress concentration easily occurs in weak parts such as the cantilever of the photovoltaic modules, affecting the safety and durability of the system.

[0004] 3. Low installation efficiency: Existing fixing methods are usually cumbersome and it is difficult to control the installation gap between photovoltaic modules conveniently and accurately, so construction efficiency needs to be improved.

[0005] 4. Poor system compatibility: Some system designs are difficult to be compatible with both framed and frameless photovoltaic modules, which limits design flexibility and the improvement of roof utilization. Summary of the Invention

[0006] To address the aforementioned technical problems, this invention provides a novel BIPV roof composed of a segmented support structure and component clamping parts, comprising: photovoltaic modules, a metal roof, a locking seam reinforcement buckle, a positioning V-shaped part, photovoltaic module clamping parts, a segmented support structure, an elastic buffer pad, and fastening bolts; The photovoltaic module is laid horizontally on the vertical seam of the metal roof, and the elastic buffer pad is provided between the photovoltaic module and the vertical seam of the metal roof. The locking seam reinforcement buckle and the positioning V-shaped piece are fixed to the vertical locking seam of the metal roof by the fastening bolts, and the locking seam reinforcement buckle is respectively set on both sides of the photovoltaic module; The segmented support structure is located below the photovoltaic module and is intermittently arranged along the length of the vertical lock seam of the metal roof. The two sides of the segmented support structure are provided with “7” or “9” shaped slots that match the vertical lock seam of the metal roof. The segmented support structure is fixed to the vertical lock seam of the metal roof by the lock seam reinforcing buckle and the fastening bolt. The photovoltaic module clamping component secures the cantilevered portion of the photovoltaic module to the side of the segmented support structure using the fastening bolts.

[0007] As a technical solution of the present invention, the main body of the locking seam reinforcement buckle is shaped like a "7" or a "9" and is integrally formed from a high-strength and high-plasticity material; a slot is provided in the middle of the locking seam reinforcement buckle, and the slot is fitted onto the vertical locking seam of the metal roof; the positioning V-shaped member is inserted into the "7" or "9" shaped slot from the side of the locking seam reinforcement buckle and abuts against the side of the vertical locking seam; the fastening bolt is inserted from the side of the locking seam reinforcement buckle body to lock the positioning V-shaped member.

[0008] As one technical solution of the present invention, the main cross-section of the segmented support structure is "W" shaped and is formed by rolling thin-walled high-strength steel.

[0009] As one technical solution of the present invention, the main body of the photovoltaic module clamping component is arched and integrally formed using high-strength and high-plasticity materials.

[0010] As one technical solution of the present invention, the photovoltaic module is a framed photovoltaic module or a frameless double-glass module.

[0011] As one technical solution of the present invention, the junction box of the photovoltaic module is located at a position that avoids the vertical seam of the metal roof.

[0012] As a technical solution of the present invention, the photovoltaic module clamping component integrates a limiting device, which is disposed on the side of the photovoltaic module clamping component to limit the installation distance between adjacent photovoltaic modules.

[0013] As a technical solution of the present invention, the “7” or “9” shaped slots on both sides of the segmented support structure are respectively embedded in the vertical lock seams of the adjacent metal roof panels, and the segmented support structure is fixed to the vertical lock seams of the metal roof by two lock seam reinforcing buckles and the fastening bolts.

[0014] As one technical solution of the present invention, the elastic buffer pad is made of elastic material and is disposed in the contact area between the photovoltaic module and the standing seam of the metal roof.

[0015] As one technical solution of the present invention, the long side of the photovoltaic module spans the vertical locking seam of the metal roof, and there are multiple photovoltaic module clamping members, which are spaced apart along the long side of the photovoltaic module.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Novel Systemic Structure and Superior Cooperative Stress Performance: This invention creatively employs a combination of segmented support structures and component clamping parts, completely transforming the traditional support mode of continuous guide rails. Its segmented support structure connects previously relatively independent individual metal roof panels laterally (perpendicular to the rib direction), forming a cooperating whole. This changes the stress pattern of a single rib, allowing wind loads to be more evenly distributed to the surrounding supports and purlins. Under strong wind loads, metal roof panel ribs are prone to lateral bending or torsion, leading to loosening or even disengagement at the seams. The segmented support structure provides lateral elastic constraints on the ribs, effectively limiting their lateral displacement and torsional angle, thus maintaining the tightness of the seam engagement. From a mechanical model perspective, the arrangement of the segmented support structure is equivalent to adding elastic support points along the span of the roof panels. This significantly reduces the effective calculated span of the roof panels under wind loads, thereby substantially reducing the bending moment and deflection at mid-span of the ribs. By enhancing overall stiffness and reducing the computational span, the roof system's ability to resist extreme wind pressure is significantly improved. Especially under extreme weather conditions such as typhoons, it effectively prevents roof panels from dislodging or tearing due to excessive local deformation. The arched structure of its module clamping components effectively transforms the bending moment (bending moment) originally acting on the flat plate into compressive stress along the arch axis through horizontal thrust when the photovoltaic modules are subjected to external loads such as wind and snow. This force transmission mechanism greatly reduces the internal stress generated by structural deformation under stress, lowering the risk of wind uplift damage to the modules due to excessive deformation of the clamping components. The arched structure with lateral restraint of the module clamping components provides continuous lateral elastic constraints for the photovoltaic modules, effectively limiting lateral displacement and torsion of the modules under wind suction, maintaining the overall collaborative working capability of the modules and the roof system. Specifically, the photovoltaic modules are laid horizontally, with their long sides spanning the ribs of the metal roof panel. Multiple module clamping devices are directly secured to the ribs using reinforcing lock seams. An elastic buffer pad is placed between the ribs and the modules, effectively transferring external pressure to the metal roof without causing microcracks or damage due to a rigid connection. Furthermore, the weakest cantilevered sections of the modules are effectively supported and fixed to a segmented support structure. This construction ensures uniform stress distribution across the photovoltaic modules and a tight connection with the metal roof, forming a synergistic stress-bearing composite system. This synergistic effect prevents wind loads from concentrating at a few metal roof supports or lock seams, reducing stress concentration. This significantly reduces the risk of metal roof panels failing under strong wind loads due to fatigue or instantaneous overload, greatly enhancing the overall resistance of BIPV roofs to wind and snow loads.

[0017] 2. High cost-effectiveness: The segmented support structure with intermittent arrangement significantly reduces the amount of support material used compared to traditional continuous guide rails, thus significantly lowering material costs. The arched module clamping components, compared to traditional module clamping, utilize the advantages of the arched structure to reduce the amount of clamping component material used, further lowering material costs. Simultaneously, the photovoltaic modules and the metal roof complement each other, achieving an optimal balance between structural efficiency and economy.

[0018] 3. Convenient and efficient installation: The photovoltaic module clamping components integrate a special limiting device, which can conveniently and accurately control the installation distance between adjacent photovoltaic modules, ensuring construction quality and aesthetics. Furthermore, most connections require only a single fastening bolt, greatly improving construction efficiency and reducing installation difficulty.

[0019] 4. Strong system compatibility and improved roof utilization: The system structure of this invention can be applied to both framed photovoltaic modules and frameless double-glass modules. When using frameless double-glass modules, the entire BIPV roof can be stepped on, which not only facilitates later operation and maintenance, but also maximizes the roof photovoltaic coverage rate and the overall installed capacity of the power station. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the BIPV roof structure of the present invention.

[0021] Figure 2 This is a 3D diagram of the connection structure between the segmented support structure and the metal roof.

[0022] Figure 3 This is an elevation view of the connection structure between the segmented support structure and the metal roof.

[0023] Figure 4 This is a schematic diagram of the overall layout of photovoltaic modules on a metal roof.

[0024] Figure 5 This is a model diagram of a standing seam roofing system.

[0025] Figure 6 A model diagram showing the installation of seam reinforcement buckles on a standing seam roofing system.

[0026] Figure 7 A model diagram for installing a segmented support structure based on a lock seam reinforcement buckle.

[0027] Figure 8 This is a stress comparison diagram showing the presence and absence of a locking seam reinforcement buckle at the mid-span of the locking seam under the same boundary and load conditions.

[0028] Figure 9 This is a deformation cloud diagram of the metal panel roof after the installation of the locking seam reinforcement buckle and segmented support structure.

[0029] Figure 10 This is a cloud map showing the deformation of a photovoltaic panel after being subjected to wind load. Detailed Implementation

[0030] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising” or “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0031] The present invention aims to overcome the shortcomings of the prior art and provide a novel BIPV roof structure with a combination of segmented support structure and component clamping parts, which is novel in structure, has superior stress performance, is economical and efficient and easy to install.

[0032] To achieve the above objectives, the present invention adopts the following technical solution: (e.g.) Figure 1-4 A novel BIPV roof structure consisting of a segmented support structure and component clamping parts includes: photovoltaic modules 1001, metal roof 1002, locking seam reinforcement buckles 1003, positioning V-shaped parts 1004, photovoltaic module clamping parts 1005, segmented support structure 1006, elastic buffer pads 1007, and fastening bolts 1008.

[0033] The photovoltaic module 1001 is laid horizontally on the vertical seam of the metal roof 1002, and its junction box is positioned away from the vertical seam of the metal roof 1002. An elastic buffer pad 1007 is provided between the photovoltaic module 1001 and the vertical seam of the metal roof 1002 to avoid a rigid connection between the photovoltaic module 1001 and the metal roof 1002.

[0034] The locking seam reinforcement buckle 1003 and the limiting pin 1004 are fixed to the vertical locking seam of the metal roof 1002 by fastening bolts 1008, and are respectively set on both sides of the photovoltaic module 1001 for initial fixing and limiting.

[0035] The segmented support structure 1006 is fixed to the vertical seam of the metal roof 1002 by two locking seam reinforcing buckles 1003 and fastening bolts 1008, and its main structure is located below the photovoltaic module 1001. The segmented support structure 1006 is arranged intermittently, rather than a traditional continuous guide rail.

[0036] The photovoltaic module clamping component 1005 fixes the cantilevered part of the photovoltaic module 1001 to the side of the segmented support structure 1006 by fastening bolts 1008, so that the photovoltaic module 1001, the segmented support structure 1006 and the metal roof 1002 form a whole that works together to bear the load.

[0037] Furthermore, the main body of the locking seam reinforcement buckle 1003 is shaped like a "7" or a "9", and is integrally molded from high-strength and high-plasticity materials, possessing excellent structural stress performance and convenient installation characteristics.

[0038] Furthermore, the main body of the photovoltaic module clamping component 1005 is arched, and it is integrally molded from high-strength and high-plasticity materials, with a reasonable stress distribution and convenient installation.

[0039] Furthermore, the main cross-section of the segmented support structure 1006 is W-shaped, formed by rolling thin-walled high-strength steel, and its sides are provided with "7"-shaped or "9"-shaped slots that match the vertical locking seams of the metal roof 1002. This structure not only provides support rails for the photovoltaic modules 1001, but its high-strength design also significantly enhances the overall wind resistance of the roof, and it is cost-effective.

[0040] Synergy between Seam Reinforcement Fasteners and Segmented Support Structures with Standing Seam Roofing Systems like Figure 5 The displayed standing seam roofing system model has the following parameters: 0.6mm thick panel, 1500mm long (simulating common purlin spacing), 3000mm total width, and uses a "7" shaped seam.

[0041] like Figure 6 The model shown is a standing seam roofing system after the seam reinforcement buckles have been installed.

[0042] like Figure 7 The model shown is a segmented support structure installed on top of a lock seam reinforcement buckle.

[0043] like Figure 8 The study demonstrates a stress comparison at the mid-span of the lock joint with and without a lock joint reinforcement buckle under the same boundary and load conditions. It can be found that after installing the lock joint reinforcement buckle, the stress at the same location of the lock joint decreased from about 45 MPa to about 15 MPa, a reduction of about 66%, which significantly enhanced the load-bearing capacity of the lock joint.

[0044] like Figure 9 The image shows the deformation cloud diagram of the metal roof after the installation of the lock seam reinforcement buckle and the segmented support structure. It can be found that the displacement on the side with the reinforcement system installed is less than that on the side without the system installed, which indicates that the reinforcement system enhances the load-bearing capacity of the metal roof panel.

[0045] A calculation model for a photovoltaic panel is established according to the method described in this invention patent, such as... Figure 10 The image shows the deformation cloud map of the photovoltaic panel after being subjected to wind load. It can be found that the reaction force at each support position of the photovoltaic panel is more uniform under this arrangement, and the stress concentration phenomenon is greatly reduced.

[0046] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A novel BIPV roof composed of a segmented support structure and component clamping parts, characterized in that, include: Photovoltaic module (1001), metal roof (1002), lock seam reinforcement buckle (1003), positioning V-shaped part (1004), photovoltaic module clamping part (1005), segmented support structure (1006), elastic buffer pad (1007) and fastening bolt (1008). The photovoltaic module (1001) is laid horizontally on the vertical seam of the metal roof (1002), and the elastic buffer pad (1007) is provided between the photovoltaic module (1001) and the vertical seam of the metal roof (1002). The locking seam reinforcement buckle (1003) and the positioning V-shaped piece (1004) are fixed to the vertical locking seam of the metal roof (1002) by the fastening bolt (1008), and the locking seam reinforcement buckle (1003) is respectively provided on both sides of the photovoltaic module (1001); The segmented support structure (1006) is located below the photovoltaic module (1001) and is intermittently arranged along the length of the vertical lock seam of the metal roof (1002). The two sides of the segmented support structure (1006) are provided with "7" or "9" shaped slots that match the vertical lock seam of the metal roof (1002). The segmented support structure (1006) is fixed to the vertical lock seam of the metal roof (1002) by the lock seam reinforcing buckle (1003) and the fastening bolt (1008). The photovoltaic module clamping member (1005) fixes the cantilevered part of the photovoltaic module (1001) to the side of the segmented support structure (1006) by means of the fastening bolt (1008).

2. The BIPV roof with a novel segmented support structure and component clamping parts as described in claim 1, characterized in that, The main body of the locking seam reinforcement buckle (1003) is shaped like a "7" or a "9" and is integrally formed from high-strength and high-plasticity material. A slot is provided in the middle of the locking seam reinforcement buckle (1003), and the slot is fitted onto the vertical locking seam of the metal roof (1002). The positioning V-shaped piece (1004) is inserted into the "7" or "9" shaped slot from the side of the locking seam reinforcement buckle (1003) and abuts against the side of the vertical locking seam. The fastening bolt (1008) is inserted from the side of the locking seam reinforcement buckle (1003) and locks the positioning V-shaped piece (1004).

3. The BIPV roof with a novel segmented support structure and component clamping parts as described in claim 1, characterized in that, The main cross-section of the segmented support structure (1006) is "W" shaped and is formed by rolling thin-walled high-strength steel.

4. The BIPV roof with a novel segmented support structure and component clamping assembly as described in claim 1, characterized in that, The main body of the photovoltaic module clamping part (1005) is arched and is integrally formed using high-strength and high-plasticity materials.

5. A BIPV roof with a novel segmented support structure and component clamping parts as described in claim 1, characterized in that, The photovoltaic module (1001) is a framed photovoltaic module or a frameless double-glass module.

6. The BIPV roof with a novel segmented support structure and component clamping elements as described in claim 1, characterized in that, The junction box of the photovoltaic module (1001) is located at a position that avoids the vertical seam of the metal roof (1002).

7. The BIPV roof with a novel segmented support structure and component clamping parts as described in claim 1, characterized in that, The photovoltaic module clamping member (1005) integrates a limiting device, which is located on the side of the photovoltaic module clamping member (1005) to limit the installation distance between adjacent photovoltaic modules (1001).

8. A BIPV roof with a novel segmented support structure and component clamping parts as described in claim 1, characterized in that, The “7” or “9” shaped slots on both sides of the segmented support structure (1006) are respectively embedded in the vertical lock seams of the adjacent metal roof panels. The segmented support structure (1006) is fixed to the vertical lock seams of the metal roof (1002) by two lock seam reinforcing buckles (1003) and the fastening bolts (1008).

9. A BIPV roof with a novel segmented support structure and component clamping elements as described in claim 1, characterized in that, The elastic buffer pad (1007) is made of elastic material and is disposed in the contact area between the photovoltaic module (1001) and the metal roof (1002) vertical lock seam.

10. A BIPV roof with a novel segmented support structure and component clamping elements as described in claim 1, characterized in that, The long side of the photovoltaic module (1001) spans the vertical lock seam of the metal roof (1002), and there are multiple photovoltaic module clamping members (1005), which are spaced apart along the long side of the photovoltaic module (1001).

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