Corner claw power glass and right angle glass claw thereof

Abstract

This application discloses a corner-claw photovoltaic glass and its right-angle glass claw, belonging to the technical field of vertical suspension installation of double-sided photovoltaic power generation glass, and is suitable for sway-resistant wind power generation systems. The corner-claw photovoltaic glass includes double-sided photovoltaic power generation glass, with right-angle glass claws attached to its corners. The right-angle glass claw is divided into a right-angle edge bonding area and a right-angle outer edge mounting area. The bonding area is adhered to the mutually perpendicular edge areas of the glass corner by an adhesive layer, and the mounting area is provided with mounting holes for connection to movable connectors. The right-angle glass claw is preferably tempered glass, which can form a U-shaped structure to achieve force distribution on both the front and back sides of the glass. This application replaces existing hanging clamps, solving the defects of existing solutions such as high cost, easy generation of hot spots, and poor stability. It has the advantages of low cost, no shading, strong wind resistance, convenient installation, and long service life, enabling low-cost, high-stability vertical suspension installation of double-sided photovoltaic power generation glass without elastic pads.

Description

Technical Field

[0001] This application belongs to the technical field of double-sided photovoltaic power generation glass and its vertical suspension installation, specifically relating to a corner claw power generation glass and its right-angle glass claw, which is particularly suitable for the optimized application of the applicant's "swaying wind-resistant power generation system (CN120658176B)", and can realize low-cost, high-stability vertical suspension installation of double-sided photovoltaic power generation glass without elastic pads. Background Technology

[0002] The applicant's invention patent "Swaying Wind-Resistant Power Generation System (CN120658176B)" discloses a photovoltaic installation system with excellent wind resistance. Its core structure includes a column erected on the ground, a crossbeam set on the column (the column and crossbeam constitute a photovoltaic support), and photovoltaic panels installed on the photovoltaic support through a non-fixed installation structure. This non-fixed installation structure (which may be called a rotating connector or movable connector, etc.) allows the photovoltaic panels to sway relative to the photovoltaic support under strong winds, thereby reducing the windward area of ​​the photovoltaic panels, expanding the wind passage, and thus reducing the impact of strong winds on the photovoltaic panels, improving the system's wind resistance performance, and reducing investment costs. Under normal operating conditions such as no wind or light winds, the photovoltaic panels remain relatively stationary, stably receiving sunlight to generate electricity. At the same time, the photovoltaic panels are equipped with a buffer mechanism (including a spring buffer mechanism or a weight buffer mechanism) to absorb kinetic energy, limit the swaying amplitude of the photovoltaic panels, and slow down the swaying speed under strong wind conditions, preventing the photovoltaic panels from being damaged by excessive stress due to violent swaying, and automatically returning the photovoltaic panels to a stationary state after the strong winds have passed.

[0003] In implementing the double-sided photovoltaic power generation glass vertical suspension installation technology solution described in the above-mentioned invention patent, the applicant conducted a comprehensive trial and test of conventional photovoltaic modules that can generate electricity on both sides provided by mainstream photovoltaic module manufacturers. After analyzing the actual application scenarios, it was found that the existing products have the following difficult-to-solve technical defects, which directly lead to their inability to meet the actual application requirements of the swaying wind-resistant power generation system.

[0004] Firstly, conventional framed double-glass photovoltaic modules: When installed vertically (front facing east, back facing west), their nearly 30mm thick frame will cast a significant shadow on the back of the photovoltaic panel within 2-3 hours in the afternoon, resulting in a hot spot effect, which seriously affects the photovoltaic power generation efficiency. According to statistics, this hot spot effect reduces the power generation efficiency by 18%-33%, which cannot meet the high efficiency requirements of bifacial power generation.

[0005] Secondly, the applicant had ordered custom-made frameless double-sided photovoltaic (PV) glass with pre-drilled mounting holes from a component manufacturer. However, the manufacturer stated that, according to current technical specifications for mounting holes in glass curtain wall clamps, the distance from the mounting hole to the edge of the double-sided PV glass must be at least 40mm, the distance from the mounting hole to the solar cell must be at least 15mm, and the diameter of the mounting hole must be greater than 12mm. If designed this way, the edge of the double-sided PV glass would form a blank edge area of ​​over 134mm without solar cells, resulting in one less row of solar cells in the double-sided PV glass, reducing the number of rows from 12 to 11, and lowering the power output by 8.3%. Furthermore, this custom-made product is a personalized customization rather than a conventional component. The manufacturer's lowest acceptable order price is 1.37 yuan / watt, and each order must be for more than 3 megawatts. Compared with the current price of 0.86 yuan / watt for conventional components, this price increase is (1.37-0.86) / 0.86×100%=37%. This price increase and batch order quantity restriction cannot meet the actual application needs.

[0006] Thirdly, conventional frameless photovoltaic (PV) glass: When installed vertically (front facing east, back facing west), no shadows are cast on the back for 2-3 hours in the afternoon, effectively avoiding hot spot effects and not affecting PV power generation efficiency. However, its structure has a significant drawback—the distance between the solar cells and the edge of the double-sided PV glass is extremely narrow, typically only 15-20mm at the edge. Furthermore, due to the stress characteristics of tempered glass, it is impossible to drill installation holes on-site. To solve this fixing problem, the applicant attempted to use the hanging clamps (also known as connectors) for suspended glass curtain walls specified in the national building industry standard JG / T139-2017, achieving fixation by clamping the extremely narrow edge area of ​​the PV glass. However, existing hanging clamps not only suffer from high procurement costs (the cost of a single clamp is no less than 50 RMB, and at least two clamps are needed to suspend a single double-sided photovoltaic glass panel, with the cost of suspending a single glass panel being at least 100 RMB), but this high cost far exceeds the market's acceptable range, severely limiting the widespread application of conventional frameless double-sided photovoltaic glass in vertical suspension installation scenarios. More importantly, hanging clamps for suspended glass curtain walls require the addition of elastic pads between the glass and the clamps. These elastic pads age and lose elasticity after 7-8 years of outdoor use, making it difficult to meet the minimum 25-year warranty requirement for photovoltaic modules and easily leading to the double-sided photovoltaic glass slipping and breaking. Based on the multiple defects of the existing technology, developing a low-cost, power-efficiency, and alternative vertical suspension installation technology for double-sided photovoltaic glass has become an urgent technical challenge. This application proposes a corner claw photovoltaic glass and its right-angle glass claw that meets practical needs. Summary of the Invention

[0007] One of the objectives of this application is to provide a corner claw photovoltaic glass that does not use existing hanging clamps and their elastic pads, so as to overcome the technical defect of high connection cost when vertically suspending frameless double-sided photovoltaic glass.

[0008] The second objective of this application is to provide a right-angle glass claw specifically for connecting and fixing double-sided photovoltaic glass, so as to achieve a low-cost and highly stable connection effect.

[0009] To achieve the above two invention objectives and address the core deficiencies of the prior art, this application adopts the following technical solution: through structural optimization, a low-cost and highly stable double-sided photovoltaic power generation glass vertical suspension installation is achieved.

[0010] A corner-claw photovoltaic glass, comprising double-sided (both sides capable of generating electricity) photovoltaic glass (module), characterized in that: Right-angle glass claws are attached to the corners of the double-sided photovoltaic glass. The right-angle glass claw is divided into a right-angle edge bonding area and a right-angle outer edge mounting area; The right-angle edge bonding area is bonded to the two mutually perpendicular edge areas at the corner of the double-sided photovoltaic power generation glass by an adhesive layer; The right-angle edge outer mounting area is located on the outer side of the corner of the double-sided photovoltaic power generation glass and is used to connect and fix with movable connecting parts (such as hanging slip rings, rotating shafts, hinges, etc.) (on the photovoltaic bracket). To further improve connection stability and prevent slippage, the right-angle edge outer mounting area is provided with one or more mounting holes adapted to connect and fix with the movable connecting parts (on the photovoltaic bracket), and reliable fixation is achieved by tightening screws.

[0011] Preferably, a right-angle glass claw is attached to each of the front and back sides at the corner of the double-sided photovoltaic glass. The mounting areas of the right-angle edges of the right-angle glass claws on both sides are connected together by a connecting block (e.g., 0.001-2.4 mm thicker than the double-sided photovoltaic glass) to form a set of U-shaped right-angle glass claws. This U-shaped structure design allows the double-sided photovoltaic glass to be subjected to force simultaneously on both sides, resulting in more uniform force distribution. This effectively reduces the probability of damage to the double-sided photovoltaic glass due to uneven edge force, and improves the overall structural stability.

[0012] Preferably, the thickness of the adhesive layer is 0.001-1.2mm, and glass-to-glass adhesive layers such as EVA adhesive layer, POE adhesive layer or UV-cured adhesive layer can be selected. This adhesive layer has good bonding strength and weather resistance, and is suitable for the long-term outdoor use of photovoltaic modules.

[0013] The right-angle glass claws are made of tempered glass with a thickness of 2-12mm, preferably 3-8mm. The emphasis on using tempered glass for these claws stems from the fact that glass-to-glass bonding is far more stable and durable than glass-to-stainless steel or other dissimilar materials. This is a consensus among engineers and home improvement professionals. The advantages are manifested in four main aspects: First, homogeneous bonding ensures a stronger bond; glass + glass is of the same material and chemical properties, with matching surface polarities, allowing for excellent wetting and adhesion of the adhesive, resulting in minimal separation at the interface. Second, bonding dissimilar materials like stainless steel presents significant drawbacks. Stainless steel has a dense oxide passivation layer, making it smooth, difficult to wet, and hard for the adhesive to hold firmly. Third, good thermal expansion and contraction compatibility prevents the adhesive from "tearing apart"; glass and glass have almost the same coefficient of thermal expansion, expanding and contracting synchronously with temperature changes, without stress on the adhesive layer. Stainless steel, however, expands and contracts much more rapidly than glass, repeatedly pulling the adhesive layer with temperature changes, inevitably leading to delamination and cracking over time. Fourth, it exhibits excellent weather resistance. Glass-to-glass bonding has a significantly longer service life in outdoor environments with humidity, direct sunlight, and large temperature differences; while glass-to-stainless steel and other dissimilar materials are prone to failure in outdoor environments. Therefore, using other dissimilar materials to make the corner claws significantly reduces connection stability and service life, constituting a degraded application solution.

[0014] Preferably, the transparency of the right-angle edge bonding area is ≥90%, and the area extends to the area where the battery cell is located (to increase the bonding area and strength); and / or, the front edge of the right-angle edge bonding area on the right-angle glass claw gradually thins from the inside out to the back side to form a sloping claw edge; the slope of the sloping claw edge is ≤45°, preferably ≤30°, more preferably ≤15°, to avoid forming claw edge shadows on the battery cell.

[0015] Preferably, the number of right-angle glass claws attached to the double-sided photovoltaic glass can be flexibly set according to the size and weight of the double-sided photovoltaic glass and the wind resistance requirements of the actual installation scenario. To ensure suspension stability, each piece of double-sided photovoltaic glass should be attached with at least two right-angle glass claws.

[0016] Preferably, the junction box is located at the lower edge of the bifacial photovoltaic glass. The electrical connection wires extend from the junction box, run along the lower edge of the bifacial photovoltaic glass, around the left and right edges, and then extend from near the upper edge to the adjacent bifacial photovoltaic glass units on the left and right, where they are electrically connected. Compared to installing the junction box at the upper edge of the bifacial photovoltaic glass, this installation method effectively avoids the impact of the junction box's shadow on power generation efficiency, meeting the high-efficiency requirements of bifacial photovoltaic power generation.

[0017] Preferably, the distance S from the outer edge of the adhesive layer to the edge of the double-sided photovoltaic glass is ≥2mm, more preferably S≥5mm, and even more preferably S≥10mm. This size limitation is not arbitrarily set. Multiple outdoor experiments have verified that when the adhesive layer completely covers the edge area, the double-sided photovoltaic glass is prone to breakage in strong winds; while when a wider area is left un-adhesive near the edge of the double-sided photovoltaic glass, the glass is less likely to break in strong winds. The core reason is that if the adhesive layer completely covers the edge area, the stress on the double-sided photovoltaic glass in strong winds will act on the tiny gaps on the edge, producing a tearing effect, which will easily lead to the glass breaking.

[0018] Preferably, the distance L from the inner edge of the adhesive layer to the edge of the solar cell is ≥2mm, more preferably L≥5mm, and even more preferably L≥10mm. In light of the hot spot effect defects mentioned above, this size limitation effectively prevents the shadow of the right-angled glass claws from being projected onto the solar cell, thereby preventing the hot spot effect and ensuring that the power generation efficiency of the double-sided photovoltaic glass is not affected.

[0019] Preferably, the corner claw photovoltaic glass is specifically adapted to the swaying wind-resistant power generation system. Through its unique structural design, the double-sided photovoltaic power generation glass can be vertically suspended without clamps and its elastic pads, which can be perfectly used in conjunction with the applicant's "swaying wind-resistant power generation system (CN120658176B)" to further improve the wind resistance performance and service life of the entire power generation system.

[0020] Preferably, the right-angle edge bonding area on the right-angle glass claw gradually thins from the inside out to the back side to form a sloping claw edge; the slope of the sloping claw edge is ≤45°, preferably ≤30°, more preferably ≤15°, to avoid forming claw edge shadows on the battery cell.

[0021] A right-angle glass claw, specifically designed for corner splicing of double-sided photovoltaic glass, characterized in that: The right-angle glass claw is divided into a right-angle edge bonding area and a right-angle outer edge mounting area; The right-angle edge bonding area is used to adhere to two mutually perpendicular edge areas at the corner of the double-sided photovoltaic glass through an adhesive layer, thereby achieving a reliable connection with the double-sided photovoltaic glass. The right-angle edge outer mounting area is used to be set on the outer side of the corner of the double-sided photovoltaic power generation glass, and is used to connect and fix with the movable connecting parts (such as hanging slip rings, rotating shafts, hinges, etc.) (on the photovoltaic bracket); in order to achieve anti-slip fixation, the right-angle edge outer mounting area is provided with one or more mounting holes adapted to be connected and fixed with the movable connecting parts (on the photovoltaic bracket), which echoes the structural design of the aforementioned corner claw power generation glass.

[0022] Preferably, the right-angle glass claw is a right-angle tempered glass claw with a thickness of 2-12mm.

[0023] Preferably, two right-angle glass claws are grouped together and connected by a connecting block (e.g., 0.001-2.4 mm thicker than the double-sided photovoltaic glass) to form a U-shaped right-angle glass claw. This structure is consistent with the preferred U-shaped right-angle glass claw structure in the aforementioned corner claw photovoltaic glass, which can achieve uniform force on both the front and back sides of the double-sided photovoltaic glass and improve connection stability.

[0024] Based on the above technical solution, compared with the prior art, this application has the following beneficial technical effects, which can specifically solve the various defects in the prior art: Firstly, the cost advantage is significant: the right-angle glass claw can completely replace the existing lifting clamps, and the procurement cost is only less than 8.8% of the current lifting clamps, resulting in a very significant cost reduction. For example, the tempered glass sheet type right-angle glass claw with specifications of 140mm×140 (60mm on each side)×8mm, which is outsourced by the applicant, has a single purchase price of only RMB 4.4, which is only 8.8% of the price of a single current lifting clamp (≥ RMB 50). Compared with the current lifting clamps, the cost is reduced by more than 91.2%, which is fully within the acceptable range of market costs and effectively solves the defect of high cost of existing lifting clamps.

[0025] Secondly, no shadow obstruction ensures power generation efficiency: Since the installation position of the right-angle glass claw avoids the battery cell area, and through reasonable size limitation (the distance L from the inner edge of the adhesive layer to the edge of the battery cell is ≥2mm), no shadow will be generated to obstruct the battery cell, which can fully guarantee the power generation efficiency of the battery cell and solve the problem of hot spot effect caused by shadow of existing framed components.

[0026] Thirdly, it has strong structural stability and excellent wind resistance: the right-angle glass claws are attached to the edge area of ​​the corner of the double-sided photovoltaic power generation glass. The bonding area is crisscrossed, with a large bonding area and strong bonding force, which can effectively prevent the double-sided photovoltaic power generation glass from breaking under strong winds. At the same time, combined with the cooperation of the mounting holes and the movable connectors, it can ensure the installation stability in the vertical suspension state. Even under extreme weather conditions such as strong typhoons, it is not easy for the corner claws to fall off or the double-sided photovoltaic power generation glass to be damaged. It can perfectly meet the wind resistance requirements of the applicant's "swaying wind-resistant power generation system".

[0027] Fourth, no personalized customization is required, further reducing procurement costs: The corner claw photovoltaic glass of this application does not require custom-made double-sided photovoltaic glass with mounting holes from the module manufacturer. Conventional frameless double-sided photovoltaic glass modules can be used directly, effectively avoiding the 37% price increase and batch order quantity restrictions of customized products, greatly reducing the procurement cost of modules, and solving the defects of inconvenience and high cost of custom-made modules.

[0028] Fifth, it has strong adaptability and is easy to install: the size and thickness (2-12mm, preferably 3-8mm) of the right-angle glass claw can be flexibly adjusted according to the specifications of the double-sided photovoltaic glass and the size of the battery cells to adapt to double-sided photovoltaic glass of different specifications; at the same time, the on-site installation operation is simple and does not require professional curtain wall installation equipment and technicians, which can effectively reduce the installation and construction costs and facilitate large-scale promotion and application.

[0029] Sixth, the design without elastic pads results in a long service life: This application adopts a structure in which the right-angle glass claw is fastened to the movable connector, eliminating the need for hanging clamps and their elastic pads. This fundamentally avoids the problem of glass slippage and breakage caused by the outdoor aging and failure of the elastic pads of existing hanging clamps. It can meet the 25-year warranty requirement of photovoltaic modules, greatly improve the overall service life of the photovoltaic installation system, and reduce the cost of later maintenance and replacement, thus solving the defect of insufficient service life of existing hanging clamps. Attached Figure Description

[0030] Figure 1 This is a planar schematic diagram of a conventional frameless double-sided photovoltaic (PV) glass, showing the positional relationship between the solar cells and the glass edge. It highlights the structural feature of a narrow distance between the solar cells and the edge of the double-sided PV glass, and also shows the edge area of ​​the glass and the area where the solar cells are located.

[0031] Figure 2 This is a schematic diagram of the right-angle glass claw in Embodiment 1 of this application, showing the division structure of the right-angle edge bonding area and the right-angle outer mounting area on the right-angle glass claw.

[0032] Figure 3 for Figure 2 The right-angle glass claw is attached to Figure 1 The schematic diagram of the structure on the double-sided photovoltaic glass shows the bonding position relationship between the right-angle glass claw and the double-sided photovoltaic glass, the solar cells, and the edge area, and clarifies the position of the mounting area outside the right-angle edge.

[0033] Figure 4 for Figure 3 The schematic diagram of a partial longitudinal section of the corner claw photovoltaic glass shows the hierarchical connection relationship between a single right-angle glass claw, the adhesive layer, and the double-sided photovoltaic glass.

[0034] Figure 5 This is a partial longitudinal section diagram of the corner claw photovoltaic glass in Embodiment 2 of this application, showing the hierarchical connection relationship between the U-shaped right-angle glass claw, the connecting block, the adhesive layer, and the double-sided photovoltaic glass.

[0035] Figure 6This is a schematic diagram of the installation and use structure of the corner claw power generation glass in Embodiment 3 of this application. It shows the connection relationship between the corner claw power generation glass and components such as movable connectors, weights, stabilizing cables, and load-bearing cables, clearly demonstrating its overall structure after vertical suspension installation, as well as its adaptation method with the swaying wind-resistant power generation system.

[0036] Figure 7 and Figure 8 The diagram shows two undesirable straight claw power generation glass structures. Tests show that the straight claw 20 is only bonded to a very narrow edge region 17 and no second straight claw 20 is provided in its vertical direction.

[0037] Figure 9 This is a schematic diagram of a rectangular claw structure.

[0038] Figure 10 This is a schematic diagram of a cross-sectional structure of the lower section of the right-angle glass claw 2, showing that a single right-angle glass claw 2 has a sloping edge 20.

[0039] The following are the symbols and their meanings: 1-Battery cell, 2-Right-angle glass claw, 3-Double-sided photovoltaic glass, 4-Modible connector, 5-Weight, 6-Stabilizing cable, 7-Electrical connection wire, 8-Limiting rope, 9-Mounting hole, 10-Bearing cable, 11-Adhesive layer, 12-Junction box, 13-Screw, 14-Rectangular claw, 15-Wide edge area, 16-Connecting block, 17-Edge area, 18-Right-angle edge bonding area, 19-Right-angle outer mounting area, 20-Sloping edge. Detailed Implementation

[0040] To make the technical means, creative features, achieved objectives and effects of this application easily understood, the application is further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that the following embodiments are merely preferred embodiments of this application and are not intended to limit the application; any conventional modifications, substitutions, or improvements made without departing from the inventive concept of this application are within the protection scope of this application, and each embodiment strictly corresponds to the limitations of the claims and is consistent with the technical solutions described above.

[0041] In the description of this application, it should be noted that the terms "upper", "lower", "left", "right", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0042] Example 1.

[0043] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, this embodiment provides a corner-claw photovoltaic glass, adapted to a frameless double-sided photovoltaic glass 3 with a standard size of 2243mm×1128mm×6mm. The double-sided photovoltaic glass 3 has 120 solar cells 1 evenly distributed on it, each solar cell 1 measuring 105mm×105mm. The distance from each solar cell 1 to the top, left, and right edges of the double-sided photovoltaic glass 3 is 20mm, and the distance to the bottom edge is 40mm. This results in a narrow edge area 17 with a width of 20mm and a wide edge area 15 with a width of 40mm. This edge size design accommodates the adhesive installation requirements of the right-angle glass claws 2.

[0044] In conjunction with the aforementioned technical solutions, the right-angle glass claw 2 in this embodiment is made of tempered glass with dimensions of 140mm × 140mm (60mm on each side) × 8mm, which falls within the preferred thickness range (3-8mm). To ensure suspension stability, a right-angle glass claw 2 is attached to each of the two corners above each double-sided photovoltaic glass 3. Simultaneously, a rectangular claw 14 is centrally located in the middle of the wide side area 15 below the double-sided photovoltaic glass 3, further enhancing the force balance during vertical suspension.

[0045] During installation, the right-angle edge bonding area 18 on the right-angle glass claw 2 is set to two 110mm×30mm sizes. The right-angle edge bonding area 18 is precisely attached to the narrower edge area 17 at the corner of the double-sided photovoltaic glass using a 0.5mm thick JL3232 type UV adhesive as the adhesive layer 11. The right-angle edge mounting area 19 is located on the outer edge of the double-sided photovoltaic glass 3, and an 8mm diameter screw mounting hole 9 is opened on it for connection and fixation with the movable connector 4 (rotating shaft / hinge), so as to realize the reliable connection between the corner claw photovoltaic glass and the photovoltaic bracket.

[0046] In this embodiment, the distance S from the outer edge of the adhesive layer 11 of the right-angle edge bonding area 18 of the right-angle glass claw 2 to the edge of the double-sided photovoltaic glass is ≥5mm, which meets the aforementioned preferred limitation (S≥5mm). As mentioned above, after multiple outdoor experiments, this design can avoid glass breakage caused by stress when swaying in strong winds; conversely, if the adhesive layer 11 completely adheres to the edge area 17, the stress of the double-sided photovoltaic glass 3 in strong winds will act on the tiny gaps on the edge, producing a tearing effect, which will easily lead to glass breakage.

[0047] The corner claw photovoltaic glass of this embodiment has been verified by actual testing. The purchase cost of a single right-angle glass claw 2 is only 4.4 yuan, which is 91.2% lower than the cost of connecting a single piece of glass with existing hanging clamps (≥50 yuan), fully demonstrating the cost advantage of this application. At the same time, the bonding strength between the right-angle glass claw 2 and the double-sided photovoltaic glass 3 after bonding can reach 1.2MPa, which fully meets the stress requirements of outdoor vertical installation and can adapt to the wind resistance requirements of the swaying wind-resistant power generation system, solving the core defects of the prior art.

[0048] Example 2.

[0049] like Figure 5 As shown, this embodiment provides a photovoltaic glass with U-shaped right-angle glass claws 2. Its main structure is consistent with that of Embodiment 1. The core difference lies in the installation method of the right-angle glass claws 2: two right-angle glass claws 2 are symmetrically attached to the front and back sides at the same corner of the double-sided photovoltaic power generation glass 3. The specifications of the two right-angle glass claws 2 are both 140mm×140 (60)mm on each side×4mm. The tops of the two right-angle glass claws 2 are connected together by connecting blocks 16 to form a U-shaped right-angle glass claw 2 with an integrated structure. This structure is completely consistent with the preferred U-shaped right-angle glass claw structure in the aforementioned invention.

[0050] Preferably, the thickness of the connecting block 16 is slightly thicker than that of the double-sided photovoltaic glass 3, for example, 0.01-0.8 mm thicker. This size design has a clear technical purpose: when the right-angle glass claw 2 is tightened with screws, the right-angle glass claw 2 can apply uniform pressure to the double-sided photovoltaic glass 3, rather than generating prying tension, thereby avoiding prying open the adhesive layer 11 and causing the double-sided photovoltaic glass 3 to slip off, further improving the connection reliability.

[0051] The U-shaped right-angle glass claw 2 in this embodiment reduces the thickness of a single right-angle glass claw 2 (4mm, still within the preferred thickness range), thus lowering material costs. Furthermore, by installing the front and back sides symmetrically, the front and back sides of the double-sided photovoltaic glass 3 are subjected to force simultaneously, resulting in more uniform force distribution. This significantly reduces the probability of glass damage due to uneven force distribution, further enhancing the stability of the entire structure and making it suitable for installation scenarios with higher stability requirements.

[0052] Example 3.

[0053] like Figure 6As shown, this embodiment provides a corner claw power generation glass adapted to a swaying wind-resistant power generation system. Its core application scenario is to adapt to the applicant's invention patent "Swaying Wind-resistant Power Generation System (CN120658176B)", specifically by replacing the framed photovoltaic panel in the power generation system with the corner claw power generation glass described in this application, giving full play to the structural and cost advantages of this application.

[0054] In this embodiment, considering the application requirements of the swaying wind-resistant power generation system, the right-angle glass claw 2 is made of transparent tempered glass with a thickness of 8mm (within the preferred thickness range) and a visible light transmittance of 91%, which can further reduce the influence of shadows. The right-angle edge bonding area 18 on the right-angle glass claw 2 is bonded to the narrow edge area 17 at the corner of the double-sided photovoltaic power generation glass 3 through a POE adhesive layer with a thickness of 0.6mm. The distance S from the outer edge of the adhesive layer to the edge of the double-sided photovoltaic power generation glass 3 is 5mm (in line with the preferred limitation). At the same time, a right-angle glass claw 2 is attached to each of the upper corners of the double-sided photovoltaic power generation glass 3. The mounting area 19 on the right-angle edge is provided with a mounting hole 9 for connecting with the movable connector 4 in the system.

[0055] The specific installation method of this embodiment is as follows, which conforms to the structural characteristics of the swaying wind-resistant power generation system: First, the mounting hole 9 of the right-angle edge outer mounting area 19 on the right-angle glass claw 2 is matched with the "hanging slip ring" type movable connector 4 on the load-bearing cable 10. The right-angle edge outer mounting area 19 of the right-angle glass claw 2 is fastened to the movable connector 4 with screws 13, so that the corner claw power generation glass is vertically suspended on the load-bearing cable 10; Second, the lower claw 14 is pasted on the lower wide edge area 15 of the glass, and a weight 5 is suspended on the lower claw 14. At the same time, a stabilizing cable 6 and a limiting pull rope 8 are set to limit the swaying amplitude of the double-sided photovoltaic power generation glass 3, which conforms to the wind-resistant design of the swaying wind-resistant power generation system; Finally, the junction box 12 is installed on the lower edge of the double-sided photovoltaic power generation glass 3. The electrical connection wire 7 is led out from the junction box 12 and wrapped around the lower edge of the glass to the left and right edges, and then led from near the upper edge to connect to the left and right adjacent corner claw power generation glass, completing the conduction of the entire circuit and ensuring the normal operation of the power generation system.

[0056] Through practical application testing, the corner claw power generation glass of this embodiment is perfectly compatible with the swaying wind-resistant power generation system. Under strong winds, it can sway with the wind, effectively reducing the windward area and reducing the impact of strong winds. At the same time, the design without hanging clamps and elastic pads fundamentally avoids the problem of elastic pad aging and failure in the later stage, and can meet the 25-year warranty requirement of photovoltaic modules, further improving the service life and operational stability of the entire swaying wind-resistant power generation system.

[0057] Example 4 (Counter-evidence example).

[0058] like Figure 7 and Figure 8As shown, there are two discarded solutions: one is to attach the straight claw 20 to the edge region 17 of the double-sided photovoltaic glass 3. As a comparison with the right-angle glass claw 2 solution of this application, after multiple outdoor strong wind simulation tests and actual working condition verification, the solution has obvious structural design defects and belongs to two deteriorated implementation solutions, which should be discarded. The specific discussion is as follows, and the analysis is carried out in combination with the structural mechanics principle and the outdoor use characteristics of photovoltaic glass.

[0059] First, from the perspective of the rationality of adhesive force, the straight claw 20 only bonds to the very narrow edge area 17 of the double-sided photovoltaic glass 3, without forming a cross-sectional bonding area. Compared with the right-angle edge bonding area 18 of the right-angle glass claw 2 of this application (two mutually perpendicular edge areas at the corner), the bonding area is significantly reduced, and the adhesive force is significantly insufficient. Under strong wind conditions outdoors, the double-sided photovoltaic glass 3 will be subjected to continuous wind load impact when suspended vertically. The wind load has the characteristics of randomness and large instantaneous impact force. The single-point narrow-surface bonding structure of the straight claw 20 and the very narrow edge area 17 cannot effectively disperse the stress generated by the wind load. It is very easy for the stress to concentrate at the bonding interface and the edge of the double-sided photovoltaic glass 3. The edge of tempered glass itself has stress concentration characteristics and has small gaps. Under continuous stress, a tearing effect will quickly occur, which will lead to the breakage of the double-sided photovoltaic glass 3 and the detachment and fall off of the straight claw 20, which cannot guarantee the installation stability.

[0060] Secondly, from the perspective of structural stress balance, this solution does not set a second straight claw 20 in the vertical direction of the straight claw 20. That is, a single straight claw 20 bears the entire weight and wind load impact when the double-sided photovoltaic glass 3 is vertically suspended. The stress structure is seriously unbalanced, which will further aggravate the stress concentration problem and significantly increase the probability of the double-sided photovoltaic glass 3 breaking in strong winds. This is completely contrary to the core design concept of this application of "fitting two mutually perpendicular edge areas at the corner".

[0061] Finally, comparing the technical advantages of the right-angle glass claw 2 in this application, it can be seen that this application fundamentally solves the problems of edge stress and stress concentration through the combination design of "right-angle corner bonding (increasing bonding area and dispersing stress) + tempered glass homogeneous bonding (improving connection durability)". The above-mentioned straight claw 20 solution abandons these core optimization points and instead amplifies the structural defects of the existing technology. Its structural design is unreasonable and its force logic is not rigorous. It is a clearly inferior implementation solution that cannot meet the actual application requirements. Therefore, it should be abandoned.

[0062] It should also be noted that all structural parameters in this application can be flexibly adjusted. Specifically, the size, thickness (2-12mm, preferably 3-8mm), quantity (at least 2 pieces), and pasting position of the right-angle glass claws 2, the number and size of the mounting holes 9, and the type (EVA, POE or UV adhesive) and thickness (0.001-0.8mm) of the adhesive layer 11 can all be flexibly set according to the specific specifications of the double-sided photovoltaic glass 3 and the wind conditions required in the actual installation scenario, to ensure that it is suitable for different application scenarios and improve the practicality and promotion of this application.

Claims

1. A corner-claw photovoltaic glass, comprising double-sided photovoltaic glass, characterized in that: Right-angle glass claws are attached to the corners of the double-sided photovoltaic glass. The right-angle glass claw is divided into a right-angle edge bonding area and a right-angle outer edge mounting area; The right-angle edge bonding area is bonded to the two mutually perpendicular edge areas at the corner of the double-sided photovoltaic power generation glass by an adhesive layer; The right-angle edge outer mounting area is located on the outside of the corner of the double-sided photovoltaic power generation glass and is used to connect and fix it with the movable connector; the right-angle edge outer mounting area is provided with one or more mounting holes adapted to be connected and fixed with the movable connector.

2. The corner claw power-generating glass according to claim 1, characterized in that: A right-angle glass claw is attached to each of the front and back sides at the corner of the double-sided photovoltaic power generation glass. The right-angle edges of the right-angle glass claws on the front and back sides are connected together by connecting blocks to form a set of U-shaped right-angle glass claws.

3. The corner claw power-generating glass according to claim 1, characterized in that: The transparency of the right-angle edge bonding area is ≥90%, and the area extends to the area where the battery cell is located; and / or, the front edge of the right-angle edge bonding area on the right-angle glass claw gradually thins from the inside to the outside and then to the back edge to form a sloping claw edge; the slope of the sloping claw edge is ≤45°, preferably ≤30°, and more preferably ≤15°.

4. The corner claw power-generating glass according to claim 1, characterized in that: The junction box is located at the lower edge of the double-sided photovoltaic glass. The electrical connection wire is led out from the junction box, runs along the lower edge of the double-sided photovoltaic glass, passes around the left and right edges of the double-sided photovoltaic glass, and then extends from near the upper edge to the adjacent double-sided photovoltaic glass on the left and right and connects with them electrically.

5. The corner claw power-generating glass according to claim 1, characterized in that: The distance S from the outer edge of the adhesive layer to the edge of the double-sided photovoltaic glass is ≥2mm, preferably S≥5mm, and more preferably S≥10mm; and / or, the distance L from the inner edge of the adhesive layer to the edge of the solar cell is ≥2mm, preferably L≥5mm, and more preferably L≥10mm.

6. The corner claw power-generating glass according to claim 1, characterized in that: The corner claw photovoltaic glass is adapted to a swaying wind-resistant power generation system. Through the cooperation of its right-angle glass claws and movable connectors, the double-sided photovoltaic power generation glass can be vertically suspended without clamps and its elastic pads.

7. A right-angle glass claw, specifically used for corner splicing of double-sided photovoltaic glass, characterized in that: The right-angle glass claw is divided into a right-angle edge bonding area and a right-angle outer edge mounting area; The right-angle edge bonding area is used to adhere to two mutually perpendicular edge areas at the corner of the double-sided photovoltaic glass using an adhesive layer; The right-angle edge outer mounting area is used to be set on the outer side of the corner of the double-sided photovoltaic power generation glass and is used to connect and fix it with the movable connector; the right-angle edge outer mounting area is provided with one or more mounting holes adapted to be connected and fixed with the movable connector.

8. The right-angle glass claw according to claim 7, characterized in that: The right-angle glass claw is a right-angle tempered glass claw with a thickness of 2-12mm.

9. The right-angle glass claw according to claim 7, characterized in that: Two right-angled glass claws are grouped together and connected by a connecting block to form a set of U-shaped right-angled glass claws.

10. The right-angle glass claw according to claim 7, characterized in that: The right-angle edge bonding area on the right-angle glass claw gradually thins from the inside out to the back side to form a sloping claw edge; the slope of the sloping claw edge is ≤45°, preferably ≤30°, and more preferably ≤15°.

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