High-transmittance anti-aging photovoltaic coated glass structure

Abstract

This invention discloses a high-transmittance, anti-aging photovoltaic coated glass structure, comprising an outer protective glass layer and an interlayer film layer. A middle layer of transparent glass is bonded to the bottom of the outer protective glass via the interlayer film layer. An inner supporting glass layer is bonded to the bottom of the middle layer of transparent glass via the interlayer film layer. The upper surface of the outer protective glass has a surface microstructure, and a first film layer is disposed on top of the surface microstructure. A second film layer is disposed on the upper surface of the middle layer of transparent glass, and a third film layer is disposed on the lower surface of the middle layer of transparent glass and the upper surface of the inner supporting glass. This invention achieves precise division of labor and synergistic cooperation by setting different functional film layers on the surfaces of each glass layer. The first, second, and third film layers respectively perform functions such as anti-reflection, anti-aging, and anti-reflection, improving glass performance and extending the service life of the glass.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic coated glass technology, specifically a high-transmittance, anti-aging photovoltaic coated glass structure. Background Technology

[0002] With the rapid development of the photovoltaic industry, the performance requirements for photovoltaic coated glass are becoming increasingly stringent. High light transmittance allows more light to enter photovoltaic modules, improving power generation efficiency; good anti-aging properties ensure that the glass maintains stable performance and extends its service life during long-term outdoor use. However, existing photovoltaic coated glass often struggles to simultaneously meet the requirements of high light transmittance and strong anti-aging properties. Some glasses, while having good light transmittance, are prone to aging problems such as film peeling and performance degradation under the corrosive effects of environmental factors such as ultraviolet radiation, rain, and dust. On the other hand, glasses with good anti-aging properties often fail to achieve ideal light transmittance, limiting the overall performance improvement of photovoltaic modules.

[0003] Therefore, there is an urgent need for a high-transmittance, anti-aging photovoltaic coated glass structure that can effectively solve the above problems. Utility Model Content

[0004] To address the problems mentioned in the background art, the purpose of this utility model is to provide a high-transmittance, anti-aging photovoltaic coated glass structure that possesses excellent anti-aging properties, ensuring stable performance during long-term outdoor use, and good light transmittance. This solves the problem that even glass with good anti-aging properties cannot achieve the ideal level of light transmittance.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-transmittance, anti-aging photovoltaic coated glass structure, comprising an outer protective glass and an interlayer film layer. A middle layer of transparent glass is bonded to the bottom of the outer protective glass via the interlayer film layer. An inner layer of supporting glass is bonded to the bottom of the middle layer of transparent glass via the interlayer film layer. A surface microstructure is provided on the upper surface of the outer protective glass, and a first film layer is provided on the top of the surface microstructure. A second film layer is provided on the upper surface of the middle layer of transparent glass. A third film layer is provided on the lower surface of the middle layer of transparent glass and the upper surface of the inner layer of supporting glass. Protective frames are fixedly connected to the outer protective glass, the middle layer of transparent glass, and the inner layer of supporting glass. Pressing strips are fixedly connected to the top and bottom of the protective frames, and the inner sides of the two pressing strips are fixedly connected to the top of the outer protective glass and the bottom of the inner layer of supporting glass respectively using sealant.

[0006] In a preferred embodiment of the present invention, the first film layer includes a nano-silica antireflective layer fixedly connected to the top of the surface microstructure, an anti-aging layer fixedly connected to the top of the nano-silica antireflective layer, and a super-hydrophilic self-cleaning layer fixedly connected to the top of the anti-aging layer.

[0007] As a preferred embodiment of this invention, the thickness of the nano-silica antireflective layer is between 80-120 nm, the thickness of the anti-aging layer is between 150-200 nm, and the thickness of the superhydrophilic self-cleaning layer is between 30-50 nm.

[0008] As a preferred embodiment of the present invention, the material of the second film layer is a fluoropolymer coating, and the thickness of the second film layer is between 100-150 nm.

[0009] As a preferred embodiment of the present invention, the third film layer includes a silicon nitride antireflective film fixedly connected to the lower surface of the middle layer transparent glass and the upper surface of the inner layer supporting glass, and a titanium dioxide composite film is fixedly connected between the two silicon nitride antireflective films.

[0010] As a preferred embodiment of this invention, the interlayer film is made of PVB film with added nano-sized light scattering particles and antioxidants.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. This utility model employs a sandwich structure design, in which an outer protective glass layer, a middle transparent glass layer, and an inner supporting glass layer are bonded together by an interlayer film layer. This design offers several significant advantages. From a mechanical perspective, the sandwich structure allows each glass layer and the interlayer film layer to work synergistically when the glass is subjected to external impact, effectively dispersing the impact force and preventing the glass from shattering and scattering. This greatly enhances the overall strength and impact resistance of the glass, improving its safety during transportation, installation, and use. Simultaneously, this structure reduces internal stress concentration caused by temperature changes, lowering the risk of cracking due to thermal expansion and contraction, and enhancing the glass's adaptability to different environmental temperatures. Furthermore, the surface microstructures on the upper surface of the outer protective glass alter the way light interacts with the glass surface from an optical perspective. When light strikes a glass surface with a microstructure, it undergoes multiple reflections and refractions on the uneven surface, redirecting light that might otherwise be reflected away due to the smooth surface back into the glass. This effectively reduces light reflection loss, widens the range of light incidence angles, and allows more light to enter the glass, thereby improving its light transmittance. Different functional films are applied to each glass layer, achieving precise division of labor and synergistic cooperation. The first, second, and third films respectively perform functions such as anti-reflection, anti-aging, and anti-reflection, enhancing glass performance. The outer protective glass, the middle transparent glass, and the inner supporting glass, along with the top and bottom clamping strips and sealant, not only provide physical protection for the glass edges, preventing damage from impacts, but also effectively block rainwater, dust, moisture, and other external environmental factors from entering the glass interlayer through the sealing effect of the sealant. This prevents corrosion of the interlayer film and the glass itself, ensuring the airtightness and durability of the glass structure and extending its service life.

[0013] 2. This invention employs a first film layer composed of a nano-silica antireflective layer, an anti-aging layer, and a super-hydrophilic self-cleaning layer. The nano-silica antireflective layer, with its unique nanoscale porous structure and optical properties, can interact with light in a special way. When light shines on the surface of the nano-silica antireflective layer, its porous structure effectively reduces the reflectivity of light on the glass surface, allowing light to penetrate the glass more easily, thus improving light transmittance compared to ordinary glass surfaces. The anti-aging layer uses an organic-inorganic hybrid material, combining the flexibility of organic polymers with the stability of inorganic materials. During outdoor use, environmental factors such as ultraviolet radiation, oxygen, and humidity are the main causes of aging in the glass film layer and the glass itself. The organic-inorganic hybrid anti-aging layer can effectively absorb and block ultraviolet radiation, preventing aging. The ultraviolet rays do not damage the internal structure and film of the glass; at the same time, its stable chemical structure can resist the erosion of oxygen and moisture, reduce the oxidation and hydrolysis of the film, thereby significantly improving the anti-aging performance of the glass and extending its service life in harsh outdoor environments; the super-hydrophilic self-cleaning layer is specifically a titanium dioxide film, which produces a photocatalytic effect under light conditions; when the glass surface is contaminated with dust, organic matter and other stains, under sunlight, the titanium dioxide film can decompose the organic stains on the surface into small molecules; at the same time, the super-hydrophilic properties allow rainwater to quickly spread into a water film on the glass surface, washing away the decomposed stains and dust and other impurities, keeping the glass surface clean without manual cleaning, reducing the impact of dust on light transmittance, and further ensuring the long-term stable high light transmittance performance of the glass. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0016] Figure 3 This is a schematic diagram of the cross-sectional structure of the first membrane layer of this utility model;

[0017] Figure 4 This is a schematic diagram of the cross-sectional structure of the third membrane layer of this utility model;

[0018] Figure 5 This is a schematic diagram of the top structure of the outer protective glass of this utility model.

[0019] In the diagram: 1. Outer protective glass; 2. Interlayer film layer; 3. Middle layer transparent glass; 4. Inner supporting glass; 5. Surface microstructure; 6. First film layer; 7. Second film layer; 8. Third film layer; 9. Protective frame; 10. Pressing edge strip; 11. Nano-silica antireflective layer; 12. Anti-aging layer; 13. Super-hydrophilic self-cleaning layer; 14. Silicon nitride antireflective film; 15. Titanium dioxide composite film. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] like Figures 1 to 5 As shown, this utility model provides a high-transmittance, anti-aging photovoltaic coated glass structure, including an outer protective glass 1 and an interlayer film layer 2. A middle layer of transparent glass 3 is bonded to the bottom of the outer protective glass 1 via the interlayer film layer 2. An inner layer of supporting glass 4 is bonded to the bottom of the middle layer of transparent glass 3 via the interlayer film layer 2. A surface microstructure 5 is provided on the upper surface of the outer protective glass 1. The surface microstructure 5 is a pyramid-shaped microstructure with a height of 3-5 μm and a base side length of 2-4 μm formed on the outer surface of the outer protective glass 1 using laser etching technology. This microstructure is used to reduce light reflection and improve stability. With a wide range of light incident angles, a first film layer 6 is provided on the top of the surface microstructure 5, a second film layer 7 is provided on the upper surface of the middle light-transmitting glass 3, and a third film layer 8 is provided on the lower surface of the middle light-transmitting glass 3 and the upper surface of the inner supporting glass 4. A protective frame 9 is fixedly connected to the outer protective glass 1, the middle light-transmitting glass 3 and the inner supporting glass 4. A pressing strip 10 is fixedly connected to the top and bottom of the protective frame 9, and the inner sides of the two pressing strips 10 are fixedly connected to the top of the outer protective glass 1 and the bottom of the inner supporting glass 4 respectively by sealant.

[0022] refer to Figure 3 The first film layer 6 includes a nano-silica antireflective layer 11 fixedly connected to the top of the surface microstructure 5, an anti-aging layer 12 fixedly connected to the top of the nano-silica antireflective layer 11, and a super-hydrophilic self-cleaning layer 13 fixedly connected to the top of the anti-aging layer 12.

[0023] As a technical optimization of this utility model, a first film layer 6 is provided, consisting of a nano-silica antireflective layer 11, an anti-aging layer 12, and a super-hydrophilic self-cleaning layer 13. The nano-silica antireflective layer 11, with its unique nano-porous structure and optical properties, can interact with light in a special way. When light shines on the surface of the nano-silica antireflective layer 11, its porous structure effectively reduces the reflectivity of light on the glass surface, allowing light to penetrate the glass more smoothly, thus improving light transmittance compared to ordinary glass surfaces. The anti-aging layer 12 uses an organic-inorganic hybrid material, combining the flexibility of organic polymers with the stability of inorganic materials. During outdoor use, environmental factors such as ultraviolet radiation, oxygen, and humidity are the main causes of aging in the glass film layer and the glass itself. The organic-inorganic hybrid anti-aging layer 12 can effectively absorb these factors. It absorbs and blocks ultraviolet rays, preventing damage to the internal structure and film of the glass. Simultaneously, its stable chemical structure resists the erosion of oxygen and moisture, reducing oxidation and hydrolysis reactions in the film, thus significantly improving the glass's anti-aging properties and extending its service life in harsh outdoor environments. The super-hydrophilic self-cleaning layer 13 is specifically a titanium dioxide film, which produces a photocatalytic effect under light conditions. When the glass surface is contaminated with dust, organic matter, or other stains, the titanium dioxide film can decompose the organic stains under sunlight, turning them into small molecules. At the same time, its super-hydrophilic properties allow rainwater to quickly spread into a water film on the glass surface, washing away the decomposed stains and dust, maintaining the cleanliness of the glass surface without manual cleaning, reducing the impact of dust on light transmittance, and further ensuring the long-term stable high light transmittance of the glass.

[0024] refer to Figure 3 The thickness of the nano-silica antireflective layer 11 is between 80-120nm, the thickness of the anti-aging layer 12 is between 150-200nm, and the thickness of the super-hydrophilic self-cleaning layer 13 is between 30-50nm.

[0025] As a technical optimization of this utility model, by setting the thickness of the nano-silica antireflection layer 11 to between 80-120 nm, the optical interference effect of the nano-silica antireflection layer 11 can reach its optimal state within this thickness range. When light is reflected from the upper and lower surfaces of the nano-silica antireflection layer 11, the reflected light will undergo destructive interference, thereby reducing light reflection and achieving the antireflection effect. If the thickness is too thin, the antireflection layer cannot fully exert its optical function, and the antireflection effect is not obvious; while if the thickness is too thick, it may introduce additional light absorption and scattering, which will reduce the light transmittance. By setting the thickness of the anti-aging layer 12 to between 150-200 nm, it is ensured that the anti-aging layer 12 has sufficient material basis to resist environmental erosion. A thicker anti-aging layer 12 can provide more... Sufficient organic-inorganic hybrid materials form a more robust protective barrier, enhancing the ability to block and resist environmental factors such as ultraviolet rays, oxygen, and humidity, effectively extending the anti-aging time, ensuring that the glass maintains good performance for a longer period of time, and reducing problems such as film peeling and glass performance degradation caused by aging. By setting the thickness of the superhydrophilic self-cleaning layer 13 between 30-50nm, it ensures that the titanium dioxide film has sufficient photocatalytic active sites, while avoiding excessive film surface roughness due to excessive thickness, which would affect the flatness and light transmittance of the glass surface. The appropriate thickness allows the superhydrophilic self-cleaning layer 13 to quickly generate a photocatalytic effect under light, decomposing organic stains, while maintaining good superhydrophilic properties, ensuring that rainwater can smoothly carry away stains, and achieving efficient self-cleaning function.

[0026] refer to Figure 2 The second film layer 7 is made of fluoropolymer coating, and the thickness of the second film layer 7 is between 100-150nm.

[0027] As a technical optimization of this invention, the use of a fluoropolymer coating with a thickness between 100-150 nm further enhances the anti-aging performance of glass. Fluoropolymers possess a unique chemical structure; the strong electronegativity of fluorine atoms enables the formation of robust carbon-fluorine bonds, which exhibit extremely high stability and strong resistance to ultraviolet radiation and chemical substances. The fluoropolymer coating effectively blocks ultraviolet light from penetrating the glass, preventing damage to the internal structure and other coating layers. Simultaneously, its chemical stability allows the glass to maintain stable performance when exposed to acid rain, corrosive gases, and other chemicals, minimizing the risk of chemical reactions that could damage the coating and cause glass aging. The 100-150 nm thickness ensures the fluoropolymer coating fully exerts its anti-aging effect while avoiding excessive thickness that could impair light transmittance, achieving a balance between anti-aging performance and light transmittance, further enhancing the durability of the glass in complex outdoor environments.

[0028] refer to Figure 4The third film layer 8 includes a silicon nitride antireflective film 14 fixedly connected to the lower surface of the middle transparent glass 3 and the upper surface of the inner support glass 4, and a titanium dioxide composite film 15 fixedly connected between the two silicon nitride antireflective films 14.

[0029] As a technical optimization of this utility model, by setting a third film layer 8 composed of a silicon nitride antireflective film 14 and a titanium dioxide composite film 15, the optical performance of the glass is significantly improved. The silicon nitride antireflective film 14 has a low refractive index and good optical uniformity. When light is incident on the surface of the silicon nitride antireflective film 14, its special optical properties can reduce the reflection of light on the film surface and increase the amount of light transmitted. The titanium dioxide composite film 15 between the two silicon nitride antireflective films 14 works synergistically with the silicon nitride antireflective film 14 to further optimize light transmission. The titanium dioxide composite film 15 can adjust the scattering and refraction of light, so that the light is more evenly distributed inside the glass and the light utilization rate is improved.

[0030] refer to Figure 2 The interlayer film layer 2 is made of PVB film with added nano-sized light scattering particles and antioxidants.

[0031] As a technical optimization of this utility model, a PVB film made by adding nano-scale light scattering particles and antioxidants brings a dual improvement to the performance of the glass. The nano-scale light scattering particles are uniformly dispersed in the PVB film. When light passes through the laminated glass, the nano-scale light scattering particles scatter the light, dispersing the originally concentrated incident light evenly in all directions inside the glass. This makes the light distribution inside the glass more uniform, reducing light reflection loss inside the glass and allowing all parts of the photovoltaic module to receive light more evenly, improving light utilization and thus increasing the power generation efficiency of the photovoltaic module. The addition of antioxidants enhances the anti-aging performance of the glass from a chemical perspective. During the use of the glass, the interlayer film layer 2 and the glass itself will inevitably undergo oxidation reactions with oxygen in the air, leading to a decline in material performance and aging. Antioxidants can preferentially react with oxygen, consuming oxygen and preventing oxygen from reacting with the interlayer film layer 2 and the glass, thereby inhibiting the oxidation and aging of the glass during use, extending the service life of the glass, and ensuring that the glass maintains good performance and structural stability during long-term use.

[0032] The working principle and usage process of this utility model are as follows: By adopting a sandwich structure design in which an outer protective glass 1, a middle light-transmitting glass 3, and an inner supporting glass 4 are bonded together by an interlayer film layer 2, it has many significant advantages. From a mechanical performance perspective, the sandwich structure allows each layer of glass and the interlayer film layer 2 to work together when the glass is subjected to external impact, effectively dispersing the impact force and preventing the glass from breaking and splashing. This greatly enhances the overall strength and impact resistance of the glass, and improves the safety of the glass during transportation, installation, and use. At the same time, this structure can also reduce the internal stress concentration of the glass caused by temperature changes, reduce the risk of cracking caused by thermal expansion and contraction, and enhance the adaptability of the glass to different environmental temperatures. The surface microstructure 5 set on the upper surface of the outer protective glass 1 changes the way light interacts with the glass surface from an optical perspective. When light strikes the microstructured glass surface, it undergoes multiple reflections and refractions on the uneven surface, redirecting light that might otherwise be reflected due to the smooth surface back into the glass. This effectively reduces light reflection loss, widens the range of light incidence angles, and allows more light to enter the glass, thereby improving its light transmittance. Different functional films are applied to each glass layer, achieving precise division of labor and synergistic cooperation. The first film layer 6, the second film layer 7, and the third film layer 8 respectively perform functions such as anti-reflection, anti-aging, and anti-reflection, enhancing glass performance. The protective frame 9 around the outer protective glass 1, the middle transparent glass 3, and the inner supporting glass 4, along with the top and bottom clamping strips 10 and sealant, not only physically protect the glass edges from impact damage but also effectively prevent rainwater, dust, moisture, and other external environmental factors from entering the glass interlayer through the sealing effect of the sealant. This prevents corrosion of the interlayer film layer 2 and the glass, ensuring the airtightness and durability of the glass structure and extending its service life.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-transmittance anti-aging photovoltaic coated glass structure comprising an outer protective glass (1) and a layer of interlayer film (2), characterized in that: The bottom of the outer protective glass (1) is bonded to the middle light-transmitting glass (3) through the interlayer film layer (2). The bottom of the middle light-transmitting glass (3) is bonded to the inner supporting glass (4) through the interlayer film layer (2). The upper surface of the outer protective glass (1) is provided with a surface microstructure (5). The top of the surface microstructure (5) is provided with a first film layer (6). The upper surface of the middle light-transmitting glass (3) is provided with a second film layer (7). The lower surface of the middle light-transmitting glass (3) and the upper surface of the inner supporting glass (4) are both provided with a third film layer (8). The outer protective glass (1), the middle light-transmitting glass (3) and the inner supporting glass (4) are all fixedly connected with protective frames (9). The top and bottom of the protective frames (9) are fixedly connected with pressing strips (10), and the inner sides of the two pressing strips (10) are fixedly connected to the top of the outer protective glass (1) and the bottom of the inner supporting glass (4) respectively with sealant.

2. A high-transmission, anti-aging photovoltaic coated glass structure according to claim 1, characterized in that: The first film layer (6) includes a nano-silica antireflective layer (11) fixedly connected to the top of the surface microstructure (5), an anti-aging layer (12) fixedly connected to the top of the nano-silica antireflective layer (11), and a super-hydrophilic self-cleaning layer (13) fixedly connected to the top of the anti-aging layer (12).

3. A high-transmission, anti-aging photovoltaic coated glass structure according to claim 2, characterized in that: The thickness of the nano-silica antireflective layer (11) is between 80-120 nm, the thickness of the anti-aging layer (12) is between 150-200 nm, and the thickness of the super-hydrophilic self-cleaning layer (13) is between 30-50 nm.

4. The high-transmittance, anti-aging photovoltaic coated glass structure according to claim 3, characterized in that: The material of the second film layer (7) is a fluoropolymer coating, and the thickness of the second film layer (7) is between 100-150nm.

5. The high-transmittance, anti-aging photovoltaic coated glass structure according to claim 4, characterized in that: The third film layer (8) includes a silicon nitride antireflective film (14) fixedly connected to the lower surface of the middle transparent glass (3) and the upper surface of the inner support glass (4), and a titanium dioxide composite film (15) is fixedly connected between the two silicon nitride antireflective films (14).

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