Transparent attaching claw power generation glass, transparent attaching claw thereof and mounting method of transparent attaching claw power generation glass

Abstract

The invention discloses transparent attaching claw power generation glass, a transparent attaching claw thereof and an installation method, belongs to the field of vertical suspension installation of double-sided photovoltaic power generation glass, is adaptive to a swing wind-resistant power generation system, and solves the problem of high suspension connection cost of frameless photovoltaic glass. A transparent attaching claw made of a high-transparency material is attached to the double-sided photovoltaic power generation glass, the transparent attaching claw is divided into a bonding area A and a mounting area B, the area A is bonded to a battery area, and the area B extends to the outer side of the glass and is used for being connected with a movable connecting piece on a support. The structure can replace a connection claw, the connection cost can be reduced by more than 95.6%, the influence on the power generation efficiency is extremely small, the structure is stable, the wind resistance is excellent, and the installation is convenient and fast.

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 transparent claw-attached power generation glass, 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 authorized 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 mounted on the column, a photovoltaic support frame formed by the column and crossbeam, and photovoltaic panels mounted on the photovoltaic support frame via a non-fixed installation structure. This non-fixed installation structure (e.g., hanging slip rings, rotating connectors, movable connectors, pivot connectors, hinge connectors, etc.) allows the photovoltaic panels to sway relative to the photovoltaic support frame under strong winds, thereby... Reducing the windward area of ​​the photovoltaic panels and expanding the wind passage can reduce the impact of strong winds on the photovoltaic panels, improve the system's wind resistance, and reduce investment costs. Under normal operating conditions such as no wind or light wind, 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, so as to avoid damage to the photovoltaic panels due to excessive stress caused by violent swaying. After the strong wind passes, the photovoltaic panels can automatically return to their stationary state.

[0003] In implementing the double-sided photovoltaic power generation glass vertical suspension installation technology solution shown in Figure 17 of the above-mentioned invention patent specification, the applicant conducted a comprehensive trial and test on conventional photovoltaic modules that can generate electricity on both sides provided by existing mainstream photovoltaic module manufacturers, and found that the existing products have the following difficult-to-solve technical defects and cannot meet the actual application needs.

[0004] Firstly, conventional framed double-glass photovoltaic modules, when installed vertically (facing east and west), have a nearly 30mm thick frame that casts a long shadow on the back of the photovoltaic panel within 3 hours in the afternoon, resulting in a hot spot effect that seriously affects the power generation efficiency of the photovoltaic system. According to statistics, this hot spot effect reduces power generation efficiency by 18%-33%, which cannot meet the market demand for photovoltaic power generation.

[0005] Secondly, the applicant had ordered 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 large blank 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 6 to 5, and lowering the power output by 16.7%. Furthermore, this customized product is an unconventional component, and the lowest order price that the manufacturer can accept is 1.37 yuan / watt, and each order must be more than 3 megawatts. Compared with the price of 0.86 yuan / watt for conventional components, it is (1.37-0.86) / 0.86×100%=37% higher. 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 three 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, and due to the stress characteristics of tempered glass, it is impossible to drill (screw) mounting holes on-site. The applicant previously 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 to achieve fixation by clamping the extremely narrow edge area of ​​the PV glass. However, existing connectors suffer from high procurement costs and a requirement for an edge width greater than 40mm. The procurement cost of a single connector is no less than 50 RMB, while suspending a single double-sided photovoltaic (PV) glass panel requires at least two connectors, bringing the total cost of suspending a single panel to at least 100 RMB. This exorbitant cost far exceeds market acceptance, severely limiting the widespread application of conventional frameless double-sided PV glass in vertically suspended installations. Furthermore, the 15-20mm edge distance does not meet the requirement of a 40mm edge width for the clamps. Moreover, the clamps used for suspended glass curtain walls require 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 PV modules and increasing the risk of the double-sided PV glass slipping and breaking. Therefore, developing a vertical suspension installation technology for double-sided photovoltaic power generation glass that can replace existing connectors, is low-cost, and does not affect power generation efficiency has become an urgent technical problem to be solved. Based on this, this application proposes a transparent connector-mounted power generation glass that meets actual needs, as well as its transparent connectors and installation method. Summary of the Invention

[0007] One of the objectives of this application is to provide a transparent clip-on photovoltaic glass that does not use existing splicing claws (i.e. hanging clamps) to overcome the technical defects of frameless double-sided photovoltaic glass being difficult to splice and costly when vertically suspended.

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

[0009] The third objective of this application is to provide a swing-resistant installation method for transparent photovoltaic glass with attached claws, which significantly reduces connection costs while ensuring installation stability and not affecting photovoltaic power generation efficiency, thereby promoting the large-scale application of double-sided photovoltaic glass in vertical suspension installation scenarios.

[0010] To achieve the above-mentioned objectives, this application adopts the following technical solution.

[0011] A transparent adhesive-bonded photovoltaic glass includes double-sided (both capable of generating electricity) photovoltaic glass (module), characterized in that: transparent adhesive pins are attached to the double-sided photovoltaic glass, and the visible light transmittance of the transparent adhesive pins is ≥90%; the same transparent adhesive pin is divided into area A and area B, area A is the bonding area and area B is the installation area; area A is bonded to the battery area where the solar cells are located on the double-sided photovoltaic glass by a transparent adhesive layer; area B extends outward from the edge of area A to the outer edge of the double-sided photovoltaic glass, and is used to connect and fix with movable connectors (slip rings, rotating shafts, hinges, etc.) on the photovoltaic support.

[0012] Preferably, to ensure structural stability after connection, area B is provided with one or more (screw) mounting holes or other conventional connection structures adapted to be connected and fixed with the movable connector, which facilitates anti-slip installation and fixation.

[0013] Preferably, the area of ​​region A of the transparent adhesive claw needs to meet the following requirements: the area of ​​region A is ≤ the area of ​​a single solar cell, and the area of ​​region A is ≥ 30% of the area of ​​a single solar cell; region A is only attached to the double-sided photovoltaic glass where the same solar cell is located, and does not cross the battery area where multiple solar cells are located, so as not to affect the power generation efficiency of multiple solar cells, and further reduce the impact on power generation efficiency.

[0014] Preferably, the transparent adhesive layer is an EVA layer, a POE layer, or a UV-cured adhesive layer, etc. This adhesive layer has good bonding strength, light transmittance, and weather resistance, meeting the requirements of long-term outdoor use of photovoltaic modules. The adhesive thickness is 0.001-1.2mm, ensuring a firm bond between the transparent adhesive claw and the double-sided photovoltaic glass, while avoiding excessively thick adhesive layers that could cause light refraction and affect power generation efficiency. The transparent adhesive claw is a 2-12mm thick transparent tempered glass sheet, PMMA acrylic sheet, or ETFE sheet, etc., with a preferred thickness of 3-8mm, to further improve light transmittance, structural strength, and weather resistance, suitable for extreme outdoor conditions. ETFE is short for ethylene-tetrafluoroethylene copolymer, commonly known as F-40, a semi-crystalline thermoplastic fluoropolymer copolymerized from ethylene and tetrafluoroethylene, and is a commonly used commercially available material.

[0015] Preferably, the number of transparent adhesive claws attached to the double-sided photovoltaic glass can be flexibly set according to the size, weight and wind resistance requirements of the double-sided photovoltaic glass, with at least two transparent adhesive claws attached to each piece of double-sided photovoltaic glass.

[0016] Preferably, a transparent claw is attached to both the front and back sides at the same location on the double-sided photovoltaic glass. The B-regions of these transparent claws on both sides are connected to form a U-shaped transparent claw (with a continuous structure). This design reduces edge shadows and improves power generation efficiency by thinning the transparent claws. Furthermore, it allows for more even stress distribution on both sides of the double-sided photovoltaic glass, reducing the probability of damage due to uneven edge stress.

[0017] Preferably, the junction box is located at the lower edge of the double-sided photovoltaic glass. The electrical connection wires extend from the junction box, run along the lower edge of the double-sided photovoltaic glass, around the left and right edges, and then extend from near the upper edge to the adjacent double-sided photovoltaic glass panes on the left and right sides, where they are electrically connected. This overcomes the negative impact of shadows and reduced power generation efficiency caused by installing the junction box at the upper edge of the double-sided photovoltaic glass.

[0018] Preferably, the front edge of the transparent claw in area A gradually thins from the inside out towards the back to form a sloping claw edge. The slope of the sloping claw edge is ≤45°, preferably ≤30°, and more preferably ≤15°, in order to avoid forming a large claw edge shadow on the double-sided photovoltaic glass, thereby further reducing the negative impact of the shadow on the power generation efficiency.

[0019] Preferably, area A is only adhered to the battery area where the solar cells are located on the double-sided photovoltaic glass, and not to the edge area of ​​the double-sided photovoltaic glass; or, the distance S from the edge of the transparent adhesive layer to the edge of the double-sided photovoltaic glass is ≥20mm, preferably S≥40mm, and more preferably S≥60mm. Multiple outdoor experiments have shown that when area A is simultaneously adhered to both the battery area and the edge area, the double-sided photovoltaic glass is prone to breakage in strong winds; however, when the edge area is not coated with adhesive and is not adhered to area A, the double-sided photovoltaic glass is less prone to breakage in strong winds. This is because not adhering to the edge area releases the edge stress of the tempered glass, preventing stress from acting on the tiny gaps at the edge of the double-sided photovoltaic glass during strong wind swaying, thus avoiding tearing and causing the glass to shatter.

[0020] Preferably, the transparent adhesive-claw photovoltaic glass is adapted to the swaying wind-resistant power generation system, and is used to realize the vertical suspension installation of double-sided photovoltaic power generation glass without elastic pads, which can be perfectly used in conjunction with the applicant's "swaying wind-resistant power generation system (CN120658176B)".

[0021] A transparent adhesive claw, specifically used for connecting and fixing double-sided photovoltaic (PV) glass, is characterized in that: the transparent adhesive claw is divided into area A and area B, area A being an adhesive area and area B being an installation area; area A is used to adhere to the battery area of ​​the double-sided PV glass containing the solar cells using a transparent adhesive layer, and the area of ​​area A is preferably 30% to 100% of the area of ​​a single solar cell; area B is located on the outer side of the edge of the double-sided PV glass, and area B is provided with (screw) mounting holes for connecting and fixing area B to movable connectors (slip rings, rotating shafts, hinges, etc.) on the PV support; the visible light transmittance of the transparent adhesive claw is ≥90%.

[0022] Preferably, the front edge of the transparent claw in area A gradually thins from the inside out towards the back to form a sloping claw edge. The slope of the sloping claw edge is ≤45°, preferably ≤30°, and more preferably ≤15°, thereby avoiding the formation of a large claw edge shadow on the double-sided photovoltaic glass and further reducing the negative impact of the shadow.

[0023] Preferably, the transparent adhesive claw is a transparent tempered glass sheet, PMMA acrylic sheet or ETFE sheet with a thickness of 2-12mm, and more preferably 3-8mm thick.

[0024] Preferably, the B regions of the two transparent adhesive claws are connected together to form a U-shaped transparent adhesive claw with a one-piece structure.

[0025] A method for installing transparent claw-mounted power generation glass to resist swaying, characterized by the following steps: taking the aforementioned transparent claw-mounted power generation glass, attaching at least two transparent claws to each piece of transparent claw-mounted power generation glass, aligning the (screw) mounting holes in area B of the transparent claw with the (screw) mounting holes on the movable connectors (slip rings, shafts, hinges, etc.) on the photovoltaic bracket, and fastening area B of the transparent claw to the movable connector with screws, so as to vertically suspend the transparent claw-mounted power generation glass on the load-bearing cable, allowing it to sway with strong winds; connecting the electrical connection wires of adjacent transparent claw-mounted power generation glass according to a preset path to complete the circuit conduction.

[0026] Compared with the prior art, this application has the following beneficial technical effects.

[0027] Firstly, it has a significant cost advantage: the transparent adhesive claw can completely replace the existing connector claw, but its procurement cost is only less than 4.4% of the current connector claw, resulting in a significant cost reduction. For example, the 140mm×90mm×8mm tempered glass transparent adhesive claw manufactured by the applicant has a single purchase price of RMB 2.2, which is only 4.4% of the current price of a single connector claw (≥ RMB 50), reducing the cost by more than 95.6% compared to the current connector claw, which is fully within the acceptable range of market costs.

[0028] Secondly, the impact on power generation efficiency is minimal: the transparent mounting clips use ultra-white transparent tempered glass (preferably photovoltaic-specific type), with a visible light transmittance of ≥90%, and the area of ​​a single transparent mounting clip is small, covering only a part of a single solar cell. Tests have shown that the impact of a single transparent mounting clip on the power generation efficiency of the solar cell it covers is less than 5%. For a conventional double-sided photovoltaic glass containing 120 half-cells, if three transparent mounting clips are attached, their impact on the total power generation efficiency (3×5% / 120×100%≈0.125%) is almost negligible, which can fully guarantee the high-efficiency power generation performance of the double-sided photovoltaic glass.

[0029] Thirdly, it boasts strong structural stability and excellent wind resistance: The transparent adhesive claws in area A are attached to the battery area of ​​the double-sided photovoltaic glass, with most of them located in the battery area far from the edge. The large area of ​​the transparent adhesive layer and its strong bonding force effectively prevent damage to the double-sided photovoltaic glass under strong winds. Simultaneously, the transparent adhesive claws are firmly bonded to the double-sided photovoltaic glass using EVA, POE, or UV transparent adhesive layers. Combined with the positioning structure (mounting holes) in area B and the movable connectors, it ensures installation stability in a vertically suspended state. Even under extreme weather conditions such as strong typhoons, the transparent adhesive claws are unlikely to detach or the double-sided photovoltaic glass will be damaged, thus meeting the wind resistance requirements of the applicant's "swaying wind-resistant power generation system."

[0030] Fourth, no personalized customization is required, resulting in low procurement costs: There is no need to order custom double-sided photovoltaic glass with mounting holes from the component manufacturer. Conventional frameless double-sided photovoltaic glass components can be used directly, avoiding the 37% price increase and batch order quantity restrictions of customized products, thus significantly reducing the procurement cost of components.

[0031] Fifth, it is highly adaptable and easy to install: the size and thickness of the transparent adhesive claws (2-12mm, preferably 3-8mm) can be flexibly adjusted according to the specifications of the double-sided photovoltaic glass and the size of the solar cells. The pasting position in area A can be precisely set according to the distribution of the solar cells. The positioning structure (mounting holes) in area B can be adapted to various movable connectors of conventional photovoltaic brackets. On-site installation is simple and does not require professional curtain wall installation equipment and technicians, thus reducing installation and construction costs.

[0032] Sixth, the design without elastic pads has a long service life: This application adopts a structure in which transparent claws are directly fastened to the movable connectors, eliminating the need to add elastic pads between the glass and the connectors. This fundamentally avoids the problem of glass slippage and breakage caused by outdoor aging and failure of elastic pads, and is compatible with the 25-year warranty requirement of photovoltaic modules. It significantly improves the overall service life of the photovoltaic installation system and reduces the cost of later maintenance and replacement. Attached Figure Description

[0033] 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.

[0034] Figure 2 This is a schematic diagram of the structure of the transparent adhesive claw (a transparent glass sheet without a sloping edge) in Embodiment 1 of this application, showing the division structure of the A area (adhesive area) and the B area (installation area) of the transparent adhesive claw.

[0035] Figure 3 for Figure 2 The transparent claws are pasted into Figure 1 The schematic diagram of the structure on the double-sided photovoltaic glass shows the relationship between the transparent adhesive claws and the adhesive positions of the double-sided photovoltaic glass and the solar cells, and clarifies the structural features of area A being attached above the solar cells and area B extending to the outer edge of the glass.

[0036] Figure 4 for Figure 3 The schematic diagram of a partial cross-section of the transparent adhesive-coated photovoltaic glass shows the hierarchical connection relationship between a single transparent adhesive, the adhesive layer, and the double-sided photovoltaic glass.

[0037] Figure 5This is a schematic diagram of another partial cross-sectional structure of transparent adhesive-bonded photovoltaic glass, showing the hierarchical connection relationship between the U-shaped transparent adhesive, the adhesive layer, and the double-sided photovoltaic glass.

[0038] Figure 6 This is a schematic diagram of the installation and use structure of the transparent claw-mounted power generation glass in Embodiment 4 of this application. It shows the connection relationship between the transparent claw-mounted power generation glass and components such as movable connectors, weights, stabilizing cables, and load-bearing cables, demonstrating its overall structure after vertical suspension installation.

[0039] Figure 7 This is a photograph of a transparent adhesive claw with sloping edges, taken under sunlight, showing that it has almost no shadows around the claw edges.

[0040] Figure 8 for Figure 7 The schematic diagram of the cross-sectional structure of the transparent claw shows the structural feature of the front edge of the transparent claw A area gradually thinning from the inside out and towards the back to form a sloping claw edge.

[0041] Figure 9 The photograph shows a transparent claw with un-thinned claw edges exposed to sunlight, demonstrating the characteristic of creating distinct claw edge shadows around its perimeter.

[0042] Figure 10 This is a schematic diagram of an undesirable structure where transparent adhesive clips are attached to the edge of double-sided photovoltaic glass. This is a failed case, illustrating the positional relationship between the transparent adhesive clips, the double-sided photovoltaic glass, and the solar cells.

[0043] Explanation of the reference numerals: 1-Battery cell, 2-Transparent 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-Claw edge shadow, 15-Sloping claw edge, 16-(U-shaped) top, 17-Edge area. Detailed Implementation

[0044] To make the technical means, creative features, objectives and effects of this application easy to understand, the following description, in conjunction with specific embodiments and accompanying drawings, further elaborates on this application. It should be noted that the following embodiments are merely preferred embodiments of this application and are not intended to limit this 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.

[0045] 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.

[0046] Example 1.

[0047] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, this embodiment provides a transparent claw-mounted photovoltaic glass that is compatible with 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. The size of a single solar cell 1 is 105mm×105mm, and the distance from the solar cell 1 to the upper edge of the double-sided photovoltaic glass 3 is 20mm.

[0048] The transparent mounting claw 2 is made of ultra-white transparent tempered glass (photovoltaic special type), with a size of 140mm×90mm×8mm and a visible light transmittance of 92%. Each double-sided photovoltaic power generation glass 3 is attached with three transparent mounting claws 2. Two are symmetrically distributed on the left and right sides of the upper edge of the double-sided photovoltaic power generation glass 3, and one is centrally located in the middle of the lower edge of the double-sided photovoltaic power generation glass 3.

[0049] The A area of ​​the transparent mounting claw 2 is 90mm×90mm in size and has an area of ​​8100mm². The area of ​​a single solar cell 1 is 11025mm², and the area of ​​the A area is 42.39% of the area of ​​the single solar cell 1. The A area is bonded with a 0.5mm thick EVA adhesive layer, preferably using JL3232 type UV shadowless adhesive as the transparent adhesive layer 11. The A area is precisely attached to the central glass surface of the single solar cell 1 without crossing adjacent solar cells 1. The B area is 50mm×90mm in size and extends outward along the right edge of the A area. It is located on the outer edge of the double-sided photovoltaic glass 3 and does not occupy the effective light-receiving area such as the battery area. An 8mm diameter (screw) mounting hole 9 is opened in the center of the B area for connection and fixation with the movable connector 4 (rotating shaft / hinge).

[0050] In this embodiment, the A area of ​​the transparent adhesive claw 2 is only attached to the battery area where the battery cell 1 is located on the double-sided photovoltaic glass 3, and is not attached to the edge area of ​​the glass. This effectively releases the edge stress of the tempered glass and avoids the glass breaking due to stress concentration when the glass is swaying in strong winds.

[0051] The transparent adhesive claw 2 of this embodiment has a purchase cost of 2.2 yuan per piece, and a total cost of 6.6 yuan for 3 pieces. Compared with the existing adhesive claws, the cost of a single piece of glass is ≥150 yuan, which reduces the cost by 95.6%. According to the test, the transparent adhesive claw 2 has an impact of 4.2% on the power generation efficiency of the covered solar cell 1 and an impact of 0.0875% on the total power generation efficiency of the entire double-sided photovoltaic power generation glass 3, which is almost negligible. After bonding, the bonding strength between the transparent adhesive claw 2 and the double-sided photovoltaic power generation glass 3 can reach 1.2MPa, which meets the stress requirements of outdoor vertical installation and is compatible with the wind resistance requirements of the swaying wind-resistant power generation system.

[0052] Example 2.

[0053] like Figure 5 As shown, this embodiment provides a photovoltaic glass with a U-shaped transparent claw 2. Its main structure is the same as that of Embodiment 1. The difference is that two transparent claws 2 are symmetrically attached to the front and back sides at the same position on the double-sided photovoltaic glass 3. The specifications of the two transparent claws 2 are both 140mm×90mm×4mm, and the top 16 of the B area of ​​the two transparent claws 2 are connected together to form a U-shaped transparent claw 2 with a connected structure.

[0054] In this embodiment, the U-shaped transparent adhesive claw 2 reduces the claw edge shadow 14 by thinning the thickness of a single adhesive claw (4mm), and at the same time, 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 and further improves structural stability.

[0055] Example 3.

[0056] like Figure 7 , Figure 8 As shown, this embodiment provides a transparent claw-mounted photovoltaic glass with a sloping claw edge 15. Its main structure is the same as that of Embodiment 1. The difference is that the front edge of the A area of ​​the transparent claw 2 gradually thins from the inside to the outside and then to the back, forming a sloping claw edge 15 with a slope of 30°. When sunlight shines, there is almost no claw edge shadow 14 around the transparent claw 2 that is projected onto the double-sided photovoltaic glass 3. Compared with the transparent claw 2 without a sloping claw edge, the impact of the transparent claw 2 on the power generation efficiency is further reduced.

[0057] Example 4.

[0058] like Figure 6 As shown, this embodiment provides a transparent claw-mounted photovoltaic glass adapted to a swaying wind-resistant power generation system and its installation method, replacing the framed photovoltaic panel in the applicant's invention patent "Swaying Wind-resistant Power Generation System (CN120658176B)" with the transparent claw-mounted photovoltaic glass described in this application.

[0059] In this embodiment, the transparent mounting claw 2 is made of ultra-white transparent tempered glass with a thickness of 8mm and a visible light transmittance of 91%. The area of ​​region A is 35% of the area of ​​a single solar cell 1. It is attached to the glass surface above the solar cell by a 0.6mm thick POE adhesive layer. The distance S from the edge of the adhesive layer 11 to the edge of the double-sided photovoltaic glass 3 is 40mm. Each double-sided photovoltaic glass 3 is attached with 4 transparent mounting claws 2, which are evenly distributed in the edge area 17 of the glass. Region B of the transparent mounting claw 2 is provided with a mounting hole 9 type positioning structure.

[0060] The installation method of this embodiment is as follows: The mounting hole 9 of the (screw) in area B of the transparent claw 2 is adapted to the hanging slip ring movable connector 4 on the load-bearing cable 10. The B area of ​​the transparent claw 2 is fastened to the movable connector 4 with screws 13, so that the transparent claw power generation glass is vertically suspended on the load-bearing cable 10. A weight 5 buffer mechanism is connected to the lower edge of the glass, and a stabilizing cable 6 and a limiting pull rope 8 are set to limit the swaying amplitude of the glass. The junction box 12 is located at 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 runs along the lower edge of the glass to the left and right edges, and then leads from near the upper edge to the left and right adjacent transparent claw power generation glasses to complete the circuit conduction.

[0061] The transparent claw-shaped power generation glass in this embodiment is perfectly compatible with the swaying wind-resistant power generation system. Under strong winds, it can sway with the wind, reducing the windward area and reducing the impact of strong winds. At the same time, the design without elastic pads avoids the problem of aging and failure in the later stage, and is compatible with the 25-year warranty requirement of photovoltaic modules.

[0062] Example 5 (Proof by contradiction).

[0063] Figure 10 The diagram shows a degraded design that should be discarded. This design only adheres the transparent adhesive claw 2 to the edge region 17 of the double-sided photovoltaic glass 3, failing to adopt the core optimization design of "increasing the bonding area to disperse stress" as proposed in this application. Multiple outdoor strong wind simulation tests (simulating outdoor strong wind conditions of level 6-12) and actual outdoor conditions have verified that this design has significant structural design flaws. Its stress logic does not conform to the principles of structural mechanics, and it cannot adapt to the outdoor usage characteristics of photovoltaic glass. Therefore, it is a clearly degraded design, as discussed in detail below.

[0064] From the perspective of the rationality of adhesive stress and the principles of structural mechanics, the transparent adhesive claw 2 is only bonded to a narrow edge area 17 of 15-20mm on the double-sided photovoltaic glass 3. The narrow bonding contact area means that the adhesive force cannot withstand the strong bending moment, shear force, and instantaneous impact force generated when the double-sided photovoltaic glass 3 sways under strong wind conditions. Considering the outdoor use characteristics of photovoltaic glass, when the double-sided photovoltaic glass 3 is vertically suspended, it will continuously bear the impact of random outdoor wind loads. Moreover, the wind loads generated by strong winds are characterized by high instantaneous peak values ​​and variable directions of action. The bonding structure of "transparent adhesive claw 2 to the narrow edge of the glass" in this solution cannot effectively disperse the stress, bending moment, and shear force generated by the wind load, causing all the forces to be concentrated at the bonding interface and the edge of the double-sided photovoltaic glass 3.

[0065] Furthermore, the edges of tempered glass are inherently weak points where stress is concentrated, and numerous tiny gaps are generated during the production process. The aforementioned stress concentration phenomenon will continue to act on these weak points, quickly triggering a tearing effect, which in turn causes cracks and damage to the double-sided photovoltaic glass 3. At the same time, it causes the transparent adhesive claw 2 to delaminate and fall off at the bonding interface with the glass, completely losing installation stability and failing to achieve the normal installation and power generation function of the photovoltaic glass.

[0066] In summary, one of the core design principles of this application is to increase the bonding area between the transparent mounting clips and the double-sided photovoltaic glass by "occupying the area where the solar cells are located," thereby achieving uniform stress distribution and fundamentally solving the technical problems of edge stress and stress concentration, ensuring installation stability under strong wind conditions outdoors; Figure 9 The proposed solution discards the core optimized design of this application, and instead amplifies the structural defects of "edge bonding and stress concentration". Its structural design is unreasonable and its stress logic is not rigorous. It does not meet the usage requirements of outdoor photovoltaic equipment and cannot be verified under actual working conditions. Therefore, this solution should be completely discarded.

[0067] It should be noted that the type of transparent adhesive layer 11 in this application is preferably a two-component silicone structural adhesive, a high-performance UV-curable structural adhesive, or an epoxy structural adhesive. These types of adhesives can achieve a stronger bond between glass layers than the glass itself, meaning that cohesive failure occurs, and the glass breaks first rather than the adhesive joint detaches.

[0068] It should also be noted that the size, thickness (2-12mm, preferably 3-8mm), quantity (at least 2 pieces) of the transparent adhesive claws in this application, the area of ​​area A (30% to 100% of the area of ​​a single solar cell), the adhesive placement, the positioning structure type of area B (mounting hole 9), and the type (EVA, POE or UV adhesive) and thickness (0.001-0.8mm) of the transparent adhesive layer 11 can all be flexibly adjusted according to the specifications of the double-sided photovoltaic glass 3, the size of the solar cell 1, and the wind conditions required for the actual installation scenario.

Claims

1. A transparent photovoltaic glass with attached claws, comprising double-sided photovoltaic glass, characterized in that: The double-sided photovoltaic glass is affixed with transparent adhesive claws, which have a visible light transmittance of ≥90%. The same transparent adhesive claw is divided into area A and area B, where area A is the bonding area and area B is the installation area. Area A is bonded to the battery area on the double-sided photovoltaic glass where the solar cells are located using a transparent adhesive layer. Area B extends outward from the edge of area A to the outer edge of the double-sided photovoltaic glass and is used to connect and fix it to the movable connector on the photovoltaic support.

2. The transparent claw-shaped power-generating glass according to claim 1, characterized in that: The B area is provided with one or more mounting holes adapted to be connected and fixed with the movable connector; and / or, a transparent adhesive claw is attached to the front and back sides at the same position on the double-sided photovoltaic power generation glass, and the B areas of the transparent adhesive claws on the front and back sides are connected together to form a U-shaped transparent adhesive claw.

3. The transparent claw-mounted power-generating glass according to claim 1, characterized in that: The area of ​​region A is 30% to 100% of the area of ​​a single battery cell, and region A does not cross the battery area where multiple battery cells are located; the thickness of the transparent adhesive layer is 0.001-1.2mm; the transparent adhesive claw is a transparent tempered glass sheet, PMMA acrylic sheet or ETFE sheet with a thickness of 2-12mm.

4. The transparent claw-shaped 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, and then extends from near the upper edge to the adjacent double-sided photovoltaic glass on the left and right sides and is electrically connected to them.

5. The transparent claw-mounted power-generating glass according to claim 1, characterized in that: The front edge of the transparent claw in area A gradually thins from the inside out towards the back to form a sloping claw edge; the slope of the sloping claw edge is ≤45°, preferably ≤30°, and more preferably ≤15°, in order to avoid forming a large claw edge shadow on the double-sided photovoltaic glass.

6. The transparent claw-mounted power-generating glass according to claim 1, characterized in that: The A area is only attached to the battery area where the solar cells are located on the double-sided photovoltaic glass, and is not attached to the edge area of ​​the double-sided photovoltaic glass; or, the distance S from the edge of the transparent adhesive layer to the edge of the double-sided photovoltaic glass is ≥20mm, preferably S≥40mm, and more preferably S≥60mm.

7. The transparent claw-mounted power-generating glass according to any one of claims 1-6, characterized in that: The transparent adhesive claw-type photovoltaic glass is adapted to a swaying wind-resistant power generation system and is used to achieve vertical suspension installation of double-sided photovoltaic glass without elastic pads. Each piece of double-sided photovoltaic glass is attached with at least two transparent adhesive claws.

8. A transparent adhesive claw, specifically used for attaching double-sided photovoltaic glass, characterized in that: The transparent adhesive claw is divided into area A and area B. Area A is the bonding area, and area B is the mounting area. Area A is used to adhere the transparent adhesive layer to the battery area where the solar cells are located on the double-sided photovoltaic glass. Area B is located on the outer side of the edge of the double-sided photovoltaic glass and has mounting holes for connecting and fixing area B to the movable connectors on the photovoltaic bracket. The visible light transmittance of the transparent adhesive claw is ≥90%.

9. The transparent adhesive claw according to claim 8, characterized in that: The front edge of area A of the transparent claw gradually thins from the inside out towards the back to form a sloping claw edge, the slope of which is ≤45°, preferably ≤30°; or, the transparent claw is a transparent tempered glass sheet, PMMA acrylic sheet or ETFE sheet with a thickness of 2-12mm; or, the B areas of two transparent claws are connected together to form a U-shaped transparent claw.

10. A method for installing a sway-resistant, wind-resistant transparent claw-mounted power-generating glass as described in any one of claims 1-6, characterized in that, The process includes the following steps: Take transparent claw-mounted power generation glass, with at least two transparent claws attached to each piece of transparent claw-mounted power generation glass; align the mounting holes of the B area of ​​the transparent claw with the mounting holes on the movable connector on the photovoltaic bracket; and use screws to pass through the mounting holes to secure the B area of ​​the transparent claw to the movable connector, so that the transparent claw-mounted power generation glass is vertically suspended on the load-bearing cable, allowing it to sway with strong winds; connect the electrical connection wires of adjacent transparent claw-mounted power generation glass according to a preset path to complete the circuit conduction.

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