Photovoltaic glass, preparation method thereof and photovoltaic module

Abstract

The invention provides photovoltaic glass, a preparation method thereof and a photovoltaic module, and the photovoltaic glass comprises a glass substrate which is constructed to be a curved glass plate; the anti-dazzle layer is arranged on the light receiving side of the glass substrate, and the anti-dazzle layer can transmit light; wherein the anti-dazzle layer comprises a plurality of anti-reflection particles, and at least two of the anti-reflection particles are different in particle size, so that the refraction path of light in the anti-dazzle layer can be increased, the transmissivity of the anti-dazzle layer is improved, and the illumination radiation intensities received by battery pieces on the two sides of a wave crest and a wave trough of the photovoltaic module are close to the same as much as possible; the output current and voltage of each battery string are relatively balanced and stable, and are prevented from being limited by the minimum current and voltage, so that the power generation efficiency of the photovoltaic module is improved.

Description

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on January 9, 2024, with application number "202420053216.3" and application name "Photovoltaic Glass and Photovoltaic Modules", the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present invention relates to the technical field of photovoltaic equipment, and in particular to photovoltaic glass and a preparation method thereof, and a photovoltaic module. Background Art

[0003] With the popularization of photovoltaic modules, their application in urban curtain walls, roads and industrial and commercial roofs has been promoted. However, existing photovoltaic modules have disadvantages such as strong reflection, glare and light pollution, which limits the application of photovoltaic modules in cities.

[0004] In the related art, a regularly arranged concave and convex surface is generally provided on the glass surface to reduce the reflectivity, thereby achieving the purpose of anti-glare. However, the regularly arranged concave and convex surface is prone to accumulate dust and other substances during outdoor use, thereby blocking the light-receiving surface of the photovoltaic module and affecting the power generation of the photovoltaic module. Summary of the invention

[0005] The embodiments of the present invention are intended to solve at least one of the technical problems existing in the prior art.

[0006] To this end, a first aspect of an embodiment of the present invention provides a photovoltaic glass.

[0007] A second aspect of the embodiments of the present invention provides a photovoltaic module.

[0008] A third aspect of an embodiment of the present invention provides a method for preparing photovoltaic glass.

[0009] In view of this, according to a first aspect of an embodiment of the present invention, a photovoltaic glass is provided, which includes: a glass substrate, which is constructed as a curved glass plate; an anti-glare layer, which is arranged on the light-receiving side of the glass substrate, and the anti-glare layer is capable of transmitting light; wherein the anti-glare layer includes a plurality of anti-reflection particles, and at least two of the plurality of anti-reflection particles have different particle sizes.

[0010] The photovoltaic glass provided in the embodiment of the present invention includes a glass substrate and an anti-glare layer. Specifically, the anti-glare layer is arranged on the light-receiving side of the glass substrate, and the glass substrate is constructed as a curved glass plate, that is, the anti-glare layer is arranged on the light-receiving side of the curved glass plate.

[0011] The anti-glare layer is light-transmissive, so that the photovoltaic glass can have an anti-glare effect while ensuring the power generation of the photovoltaic module having the photovoltaic glass.

[0012] The anti-glare layer includes a plurality of anti-reflection particles, wherein at least two of the plurality of anti-reflection particles have different particle sizes. It is understandable that the two anti-reflection particles with different particle sizes have different refractive indexes, so that the generated light is refracted differently, diffuse reflection is increased, and glare on the surface of the glass substrate is eliminated, thereby achieving the purpose of anti-glare.

[0013] Moreover, since the particle size of the anti-reflection particles is small, the surface of the anti-glare layer formed is flat on a macroscopic scale. Compared with the related technology of setting obvious concave and convex surfaces on the glass surface, it is not easy to accumulate dust and other substances, and effectively prevent dust and other substances from blocking the light-receiving surface of the photovoltaic module with the photovoltaic glass, thereby improving the power generation and power generation efficiency of the photovoltaic module.

[0014] At the same time, since the plurality of anti-reflection particles include at least two anti-reflection particles with different particle sizes, the refraction path of the light in the anti-glare layer can be increased, thereby improving the transmittance of the anti-glare layer, thereby making the light radiation intensity received by the cells on both sides of the peak and trough of the photovoltaic module as close to the same as possible, and the output current and voltage of each cell string are relatively balanced and stable, avoiding being limited by the minimum current and voltage, thereby improving the power generation efficiency of the photovoltaic module.

[0015] In addition, the photovoltaic glass provided according to the above technical solution of the present invention also has the following additional technical features:

[0016] In some technical solutions, optionally, the plurality of anti-reflection particles include a plurality of inorganic particles; wherein at least two of the plurality of inorganic particles have different particle sizes.

[0017] In this technical solution, it is defined that the plurality of anti-reflection particles include a plurality of inorganic particles. Specifically, at least two of the plurality of inorganic particles have different particle sizes. It is understandable that the two inorganic particles with different particle sizes have different refractive indexes, so that the generated light is refracted differently, increasing diffuse reflection, thereby achieving the purpose of anti-glare, and effectively solving the problem of glare pollution generated when solar panels are used in related technologies.

[0018] Moreover, since the particle sizes of at least two inorganic particles are different, the refraction path of light in the anti-glare layer can be increased, the transmittance of the anti-glare layer can be improved, and the power generation and power generation efficiency of the photovoltaic module can be improved.

[0019] In some technical solutions, optionally, the plurality of anti-reflection particles include a plurality of inorganic particles and a plurality of organic particles; wherein at least two of the plurality of inorganic particles have different particle sizes; and / or the particle size of at least one inorganic particle is different from the particle size of at least one organic particle.

[0020] In this technical solution, it is defined that the plurality of anti-reflection particles include a plurality of inorganic particles and a plurality of organic particles. Specifically, at least two of the plurality of inorganic particles have different particle sizes. Alternatively, the particle size of at least one inorganic particle is different from the particle size of at least one organic particle. Alternatively, the particle sizes of at least two inorganic particles are different, and the particle size of at least one inorganic particle is different from the particle size of at least one organic particle.

[0021] It is understandable that two inorganic particles with different particle sizes, or two light-transmitting particles with different particle sizes have different refractive indexes, so that the generated light is refracted differently, increasing diffuse reflection, thereby achieving the purpose of anti-glare, and effectively solving the problem of glare pollution generated when solar panels are used in related technologies.

[0022] Moreover, since the particle sizes of at least two inorganic particles are different, and / or the particle size of at least one inorganic particle is different from the particle size of at least one organic particle, the refraction path of light in the anti-glare layer can be increased, the transmittance of the anti-glare layer can be improved, and the power generation and efficiency of the photovoltaic module can be improved.

[0023] In addition, since the anti-glare layer includes a plurality of organic particles, the bonding force between the anti-glare layer and the glass substrate can be improved, thereby ensuring the stability of the anti-glare layer on the glass substrate and further ensuring the anti-glare effect of the photovoltaic module.

[0024] In some technical solutions, optionally, the average particle size d1 of the plurality of inorganic particles satisfies d1>300 nm.

[0025] In this technical solution, the range of values ​​of the average particle size of multiple inorganic particles is limited. Specifically, the average particle size of multiple inorganic particles is greater than 300nm. Thus, while achieving the anti-glare effect and increasing the transmittance of light in the anti-glare layer, the refractive index of the inorganic particles is made smaller, that is, less than 1.46, ensuring that the light can be incident on the light-receiving surface of the battery string layer through the glass substrate after passing through the anti-glare layer, thereby ensuring the power generation of the photovoltaic module.

[0026] Optionally, the mass percentage of the inorganic particles in the anti-glare layer is 35% to 45%.

[0027] In some technical solutions, optionally, the average particle size d1 of the plurality of inorganic particles satisfies 350nm≤d1≤500nm.

[0028] Optionally, the average particle size d1 of the plurality of inorganic particles is any one of 350 nm, 360 nm, 370 nm, 380 nm, 390 nm, 400 nm, 410 nm, 420 nm, 430 nm, 440 nm, 450 nm, 460 nm, 470 nm, 480 nm, 490 nm, and 500 nm.

[0029] In some technical solutions, optionally, the average particle size d2 of the plurality of organic particles satisfies 50nm≤d2≤150nm.

[0030] Optionally, the average particle size d2 of the plurality of organic particles is any one of 50 nm, 60 nm, 70 nm, 80 nm, 90 nm, 100 nm, 110 nm, 120 nm, 130 nm, 140 nm, and 150 nm.

[0031] Optionally, the mass percentage of the organic particles in the anti-glare layer is 55% to 65%.

[0032] In some technical solutions, optionally, at least one inorganic particle is spherical in shape.

[0033] In this technical solution, the shape of at least one inorganic particle is limited to be spherical, so that when light is incident on the light-receiving surface of the anti-glare layer, more light can be refracted in the anti-glare layer, that is, the refraction path of the light in the anti-glare layer is further increased, the transmittance of the anti-glare layer is improved, and the power generation efficiency and power generation of the photovoltaic module are improved.

[0034] In some technical solutions, optionally, each inorganic particle includes a hollow structure and a pore structure that are interconnected; and / or the porosity of each inorganic particle is greater than 30%.

[0035] In this technical solution, each inorganic particle includes a interconnected hollow structure and a pore structure, that is, each inorganic particle has an internal hollow void structure, so that while the anti-glare layer achieves an anti-glare effect, it can significantly increase the transmittance of the anti-glare layer, so that the anti-glare layer has a transmittance-enhancing effect and improves the power generation capacity of the photovoltaic module.

[0036] Moreover, since each inorganic particle includes an interconnected hollow structure and a hole structure, the refractive index of the inorganic particles can be made smaller. Even if the refractive index of the inorganic particles is less than 1.46, it is ensured that the light can pass through the anti-glare layer and then through the glass substrate to the light-receiving surface of the battery string layer, thereby ensuring the power generation of the photovoltaic module.

[0037] Optionally, the pore structure is mesoporous, that is, each inorganic particle has a hollow-mesoporous void structure.

[0038] The porosity of each inorganic particle is greater than 30%, thereby further increasing the transmittance of the anti-glare layer and improving the power generation of the photovoltaic module.

[0039] In some technical solutions, optionally, the inorganic particles include one of silicon dioxide particles, titanium dioxide particles, aluminum oxide particles, zinc oxide particles and tin dioxide particles.

[0040] In some technical solutions, optionally, the thickness m1 of the anti-glare layer satisfies 1μm≤m1≤10μm; and / or the radius R of the curved glass plate satisfies 50mm≤R≤150mm; and / or the thickness m2 of the curved glass plate satisfies 3mm≤m2≤8mm.

[0041] In this technical solution, the range of the thickness of the anti-glare layer is limited. Specifically, the thickness of the anti-glare layer is between 1 μm and 10 μm. It is understandable that if the thickness of the anti-glare layer is too thin, the anti-glare effect is poor, or no anti-glare effect is achieved, which is easy to cause light pollution. If the thickness of the anti-glare layer is too thick, the transmittance of the anti-glare layer will be reduced, affecting the power generation efficiency of the photovoltaic module.

[0042] By adjusting the thickness of the anti-glare layer to between 1μm and 10μm, the anti-glare effect can be achieved while ensuring the transmittance of the anti-glare layer, and the refractive index of the inorganic particles can be made less than 1.46, ensuring that light can pass through the anti-glare layer and then through the glass substrate to the light-receiving surface of the battery string layer, thereby ensuring the power generation and efficiency of the photovoltaic module.

[0043] The curved surface radius R of the curved glass plate satisfies 50 mm ≤ R ≤ 150 mm. Optionally, the curved glass plate is a multi-peak and multi-trough arc-shaped curved glass.

[0044] The thickness m2 of the curved glass plate satisfies 3mm≤m2≤8mm.

[0045] It is understandable that the thickness of the anti-glare layer obtained by using different preparation processes is different.

[0046] In some technical solutions, optionally, the curved glass plate is provided with a positioning structure.

[0047] In this technical solution, it is understandable that due to the structure of the curved glass plate, the curved glass plate is difficult to fix during the preparation of the photovoltaic glass, resulting in uneven thickness of the anti-glare layer coated on the curved glass plate, affecting the anti-glare effect.

[0048] By setting a positioning structure on the curved glass plate, the curved glass plate can be positioned during the coating process of the anti-glare layer, which solves the problem of difficulty in uniform coating of the curved glass plate, ensures the uniformity of the thickness of the anti-glare layer at all locations, and is beneficial to improving the anti-glare effect of the photovoltaic glass.

[0049] In some technical solutions, optionally, the curved glass plate includes a first end and a second end opposite to each other, and the positioning structure includes a first positioning hole and a second positioning hole, wherein the first positioning hole is configured to be close to the first end, the second positioning hole is opposite to the first positioning hole, and the second positioning hole is configured to be close to the second end.

[0050] In this technical solution, it is defined that the positioning structure includes a first positioning hole and a second positioning hole. Specifically, the first positioning hole is close to the first end, the second positioning hole is close to the second end, and the first positioning hole and the second positioning hole are opposite, that is, the first positioning hole and the second positioning hole are symmetrically distributed at both ends of the curved glass plate. By providing the first positioning hole and the second positioning hole, the curved glass plate can be effectively positioned during the preparation process of the photovoltaic glass, ensuring the uniformity of the thickness of the anti-glare layer at various locations, which is conducive to improving the anti-glare effect of the photovoltaic glass.

[0051] According to a second aspect of the present invention, there is provided a photovoltaic module, comprising the photovoltaic glass provided by any of the above technical solutions, thus having all the beneficial technical effects of the photovoltaic glass, which will not be described in detail herein.

[0052] Furthermore, the photovoltaic module also includes a cell string layer, a first adhesive film layer, a second adhesive film layer and a backplane, wherein the first adhesive film layer is located between the photovoltaic glass and the cell string layer, the light-receiving surface of the cell string layer faces the first adhesive film layer, and the second adhesive film layer is arranged between the backlight surface of the cell string layer and the backplane.

[0053] The photovoltaic module provided by the embodiment of the present invention includes photovoltaic glass, a battery string layer, a first adhesive film layer, a second adhesive film layer and a back panel. Specifically, the first adhesive film layer is located between the photovoltaic glass and the battery string layer, and the light-receiving surface of the battery string layer faces the first adhesive film layer, that is, the photovoltaic glass is the front panel glass of the photovoltaic module.

[0054] The second adhesive film layer is located between the backlight side of the battery string layer and the back plate, thereby achieving bonding between the photovoltaic glass, the battery string layer and the back plate. The light-receiving side of the battery string layer is protected by the photovoltaic glass, and the backlight side of the battery string layer is protected by the back plate.

[0055] Optionally, the first film layer includes one of a high-cutoff EVA (ethylene-vinyl acetate copolymer) film, a POE (polyethylene octene co-elastomer) film, an EPE (EVA / POE / EVA) three-layer co-extruded film or a PVB (polyvinyl butyral) film.

[0056] Optionally, the second adhesive film layer includes a highly transparent encapsulation adhesive film, specifically, the second adhesive film layer includes one of a high-cutoff EVA adhesive film, a POE adhesive film, an EPE (EVA / POE / EVA) three-layer co-extruded adhesive film or a PVB adhesive film.

[0057] Optionally, the cell string layer includes a crystalline silicon cell string layer, specifically, the crystalline silicon cell string layer includes an XBC (interdigitated back contact solar cell), an MWT (metal wire-wound through-hole solar cell) or a shingled solar cell without a metal grid line. It is understandable that the positive and negative metal electrodes of the above crystalline silicon cell string layer are both led out from the back.

[0058] Optionally, the thickness m3 of the first adhesive film layer satisfies 0.3mm≤m3≤0.8mm; and / or the thickness m4 of the second adhesive film layer satisfies 0.3mm≤m4≤0.8mm; and / or the thickness m5 of the back plate satisfies 0.3mm≤m5≤0.7mm; and / or the back plate includes a flexible member.

[0059] Optionally, the back panel is made of a flexible polymer material, wherein the flexible polymer material includes PET (thermoplastic polyester), CPC (polyurethane) or a glass fiber composite material.

[0060] According to the third aspect of the present invention, a method for preparing photovoltaic glass is provided, which is used for photovoltaic glass provided by any of the above technical solutions, and thus has all the beneficial technical effects of the photovoltaic glass, which will not be repeated here.

[0061] Furthermore, the preparation method of photovoltaic glass includes: cleaning the curved glass plate; after the cleaning is completed, placing the silk screen mold on the cleaned surface of the curved glass plate, and outputting the anti-glare coating liquid to the silk screen mold, and using a scraper to evenly scrape the anti-glare coating liquid on the silk screen mold to form an anti-glare wet film on the curved glass plate; baking the curved glass plate coated with the anti-glare wet film at a first temperature, and obtaining a photovoltaic glass substrate when the baking time reaches a set time; after curing the photovoltaic glass substrate at a second temperature, photovoltaic glass is obtained.

[0062] The method for preparing photovoltaic glass provided in an embodiment of the present invention first cleans the curved glass plate. The cleaning treatment can enhance the lipophilicity of the curved glass plate, thereby improving the bonding strength between the anti-glare layer and the curved glass plate, which is beneficial to improving the reliability of the photovoltaic glass and the photovoltaic modules having the photovoltaic glass.

[0063] After cleaning, the anti-glare coating liquid is output to the screen mold through a metering pump, and the anti-glare coating liquid output to the screen mold is evenly scraped with a scraper to form an anti-glare wet film on the curved glass plate. Optionally, the thickness of the anti-glare wet film is 100 μm to 150 μm, and the screen printing speed is 10 m / min to 15 m / min.

[0064] The curved glass plate formed with the anti-glare wet film is baked at high temperature to make the anti-glare wet film quickly solidify and take shape. After the baking time reaches the set time, a photovoltaic glass substrate is obtained. The photovoltaic glass substrate is then cured. After the curing process is completed, a stable anti-glare layer, namely photovoltaic glass, is obtained on the curved glass plate.

[0065] Optionally, the anti-glare layer has a thickness of 15 μm to 30 μm.

[0066] In addition, the method for preparing photovoltaic glass provided by the above technical solution of the present invention also has the following additional technical features:

[0067] In some technical solutions, optionally, the curved glass plate is cleaned, specifically including: using an esterifying agent to clean the curved glass plate.

[0068] In this technical solution, an esterifying agent is used to clean the curved glass plate to enhance the lipophilicity of the curved glass plate, thereby improving the bonding strength between the anti-glare layer and the curved glass plate, which is beneficial to improving the reliability of photovoltaic glass and photovoltaic modules having the photovoltaic glass.

[0069] Optionally, the esterification agent includes one of hexamethyldisiloxane, trimethylsiloxane and dimethylchlorosilane.

[0070] In some technical schemes, optionally, the wire mesh mold includes a flexible wire mesh mold; and / or the scraper includes a flexible scraper; and / or the width of the scraper is smaller than the width of the wire mesh mold; and / or the first temperature is greater than or equal to 120°C, and less than or equal to 150°C; and / or the second temperature is greater than or equal to 50°C, and less than or equal to 55°C; and / or the set time is greater than or equal to 30 min, and less than or equal to 60 min.

[0071] In this technical solution, the screen mold is a flexible part. Optionally, the screen mold material can be one of polyurethane, polyester or silicone rubber. It can be understood that the flexible part has good ductility and elasticity, which is conducive to making the anti-glare layer coating more uniform. Optionally, the mesh number of the screen mold is 200 mesh to 500 mesh. Optionally, the size of the screen mold is 450mm×800mm.

[0072] The scraper is a flexible part. Optionally, the scraper material can be one of polyurethane, silicone rubber or natural rubber, and the Shore hardness is 60 to 80 degrees. Optionally, the scraper has a thickness of 1 mm to 2 mm and a width of 400 mm to 420 mm. It can be understood that the flexible scraper has good wear resistance and resilience. In the process of applying the anti-glare coating liquid, it can achieve uniform coating without destroying the internal structure of the anti-glare coating liquid, thereby ensuring the anti-glare effect of the photovoltaic glass.

[0073] In addition, at least one of the screen mold and the scraper is a flexible member, which can better fit the curved glass plate during the coating process, which is beneficial to improving the uniformity of the anti-glare layer after coating.

[0074] The width of the scraper is smaller than the width of the screen mold, so that during the coating process, the anti-glare coating liquid can be prevented from gathering on both sides of the curved glass plate, thereby causing the problem of uneven thickness of the anti-glare layer, further ensuring the uniformity of the anti-glare layer after coating.

[0075] Optionally, when the photovoltaic glass substrate is subjected to a curing treatment, the curing treatment lasts for 24 hours.

[0076] Additional aspects and advantages according to the present invention will be given in part in the following description, and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0077] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0078] Figure 1 A schematic structural diagram of a photovoltaic glass according to an embodiment of the present invention is shown;

[0079] Figure 2 Shows Figure 1 An enlarged view of the photovoltaic glass of the embodiment shown at position A;

[0080] Figure 3 A schematic structural diagram of a photovoltaic assembly according to an embodiment of the present invention is shown;

[0081] Figure 4 A schematic structural diagram of a curved glass plate and a preparation tool according to an embodiment of the present invention is shown;

[0082] Figure 5 A flow chart of a method for preparing photovoltaic glass according to an embodiment of the present invention is shown.

[0083] in, Figures 1 to 4 The corresponding relationship between the reference numerals and the component names is as follows:

[0084] 100 photovoltaic glass, 110 glass substrate, 120 anti-glare layer, 130 anti-reflection particles, 131 inorganic particles, 132 organic particles, 140 positioning structure, 141 first positioning hole, 142 second positioning hole, 150 first end, 160 second end, 200 photovoltaic module, 210 battery string layer, 220 first adhesive film layer, 230 second adhesive film layer, 240 backplane, 300 screen mold, 400 scraper, 500 anti-glare coating liquid. DETAILED DESCRIPTION

[0085] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0086] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0087] Refer to the following Figures 1 to 5 The photovoltaic glass 100, the photovoltaic module 200 and the method for preparing the photovoltaic glass provided according to some embodiments of the present invention are described.

[0088] In one embodiment according to the present application, Figure 1 and Figure 2 As shown, a photovoltaic glass 100 is proposed, which includes: a glass substrate 110, which is constructed as a curved glass plate; an anti-glare layer 120, which is arranged on the light-receiving side of the glass substrate 110, and the anti-glare layer 120 can transmit light; wherein the anti-glare layer 120 includes a plurality of anti-reflection particles 130, and at least two of the plurality of anti-reflection particles 130 have different particle sizes.

[0089] The photovoltaic glass 100 provided in an embodiment of the present invention includes a glass substrate 110 and an anti-glare layer 120. Specifically, the anti-glare layer 120 is arranged on the light-receiving side of the glass substrate 110, and the glass substrate 110 is constructed as a curved glass plate, that is, the anti-glare layer 120 is arranged on the light-receiving side of the curved glass plate.

[0090] The anti-glare layer 120 is light-transmissive, so that the photovoltaic glass 100 can have an anti-glare effect while ensuring the power generation of the photovoltaic module 200 having the photovoltaic glass 100 .

[0091] The anti-glare layer 120 includes a plurality of anti-reflection particles 130, wherein at least two of the plurality of anti-reflection particles 130 have different particle sizes. It is understandable that the two anti-reflection particles 130 with different particle sizes have different refractive indexes, so that the generated light is refracted differently, diffuse reflection is increased, and glare on the surface of the glass substrate 110 is eliminated, thereby achieving the purpose of anti-glare.

[0092] Moreover, since the particle size of the anti-reflection particles 130 is relatively small, the surface of the formed anti-glare layer 120 is flat on a macroscopic scale. Compared with the related art of setting obvious concave and convex surfaces on the glass surface, it is not easy to accumulate dust and other substances, and dust and other substances are effectively prevented from blocking the light-receiving surface of the photovoltaic module 200 having the photovoltaic glass 100, thereby improving the power generation and power generation efficiency of the photovoltaic module 200.

[0093] At the same time, since the plurality of anti-reflection particles 130 include at least two anti-reflection particles 130 with different particle sizes, the refraction path of the light in the anti-glare layer 120 can be increased, thereby improving the transmittance of the anti-glare layer 120, thereby making the light radiation intensity received by the cells on both sides of the peak and trough of the photovoltaic module 200 as close to the same as possible, and the output current and voltage of each cell string are relatively balanced and stable, avoiding being limited by the minimum current and voltage, thereby improving the power generation efficiency of the photovoltaic module 200.

[0094] In some embodiments, optionally, the plurality of antireflection particles 130 include a plurality of inorganic particles 131 ; wherein at least two of the plurality of inorganic particles 131 have different particle sizes.

[0095] In this embodiment, it is defined that the plurality of anti-reflection particles 130 include a plurality of inorganic particles 131. Specifically, at least two of the plurality of inorganic particles 131 have different particle sizes. It is understandable that the two inorganic particles 131 with different particle sizes have different refractive indexes, so that the generated light is refracted differently, and diffuse reflection is increased, thereby achieving the purpose of anti-glare, and effectively solving the problem of glare pollution generated when solar panels are used in the related art.

[0096] Furthermore, since the particle sizes of at least two inorganic particles 131 are different, the refraction path of light in the anti-glare layer 120 can be increased, the transmittance of the anti-glare layer 120 can be improved, and the power generation and power generation efficiency of the photovoltaic module 200 can be improved.

[0097] like Figure 1 and Figure 2 As shown, in some embodiments, optionally, the plurality of anti-reflection particles 130 include a plurality of inorganic particles 131 and a plurality of organic particles 132; wherein, at least two of the plurality of inorganic particles 131 have different particle sizes; and / or the particle size of at least one inorganic particle 131 is different from the particle size of at least one organic particle 132.

[0098] In this embodiment, it is defined that the plurality of antireflection particles 130 include a plurality of inorganic particles 131 and a plurality of organic particles 132. Specifically, the particle sizes of at least two inorganic particles 131 among the plurality of inorganic particles 131 are different. Alternatively, the particle size of at least one inorganic particle 131 is different from the particle size of at least one organic particle 132. Alternatively, the particle sizes of at least two inorganic particles 131 are different, and the particle size of at least one inorganic particle 131 is different from the particle size of at least one organic particle 132.

[0099] It is understandable that two inorganic particles 131 with different particle sizes, or two light-transmitting particles with different particle sizes have different refractive indexes, so that the generated light is refracted differently, increasing diffuse reflection, thereby achieving the purpose of anti-glare, and effectively solving the problem of glare pollution generated when solar panels are used in related technologies.

[0100] Moreover, since the particle sizes of at least two inorganic particles 131 are different, and / or the particle size of at least one inorganic particle 131 is different from the particle size of at least one organic particle 132, the refraction path of light in the anti-glare layer 120 can be increased, the transmittance of the anti-glare layer 120 can be improved, and the power generation and power generation efficiency of the photovoltaic module 200 can be improved.

[0101] In addition, since the anti-glare layer 120 includes a plurality of organic particles, the bonding force between the anti-glare layer 120 and the glass substrate 110 can be improved, thereby ensuring the stability of the anti-glare layer 120 on the glass substrate 110 and further ensuring the anti-glare effect of the photovoltaic module 200 .

[0102] In a specific embodiment, organic nanoparticles (organic particles 132) are formed by adding organic silane and silane coupling agent of specific chain length, crosslinking and hydrolysis condensation, and forming an anti-glare wet film with a thickness of 10 μm to 25 μm on the surface of glass (glass substrate 110). It can be understood that after drying the anti-glare wet film, an anti-glare layer 120 with a thickness of 1 μm to 10 μm is obtained. The average particle size of the organic nanoparticles is 50 nm to 150 nm.

[0103] The organosilane includes a silane with a long chain alkyl group, and optionally, one or more of dodecyltrisilane, hexadecyldimethylchlorosilane, heptadecafluorodecyltrimethoxysilane, n-octyltrimethoxysilane, dodecyltrimethoxysilane, and octadecyltrimethoxysilane.

[0104] The silane coupling agent includes any one of an aminosilane coupling agent, a carboxylsilane coupling agent, an isocyanatesilane coupling agent, and a methacryloxysilane coupling agent.

[0105] The method of forming the anti-glare film layer is as follows:

[0106] According to weight parts:

[0107] Mixed solvent: 60 to 70 parts

[0108] Low surface energy additive: 0.5 to 1.5 parts

[0109] Organosilane: 5 to 8 parts

[0110] Silane coupling agent: 2 to 5 parts

[0111] Inorganic nanoparticles (inorganic microparticles 131): 15 to 25 parts

[0112] Add organic silane to the mixed solvent, adjust the pH to 4.5-5.5, stir at room temperature for 1h-2h, add silane coupling agent and continue to react for 2h-4h, then add inorganic nanoparticles, grind with ball roller and stir to react for 12h-24h to obtain the desired anti-glare organic / inorganic nano coating (anti-glare coating liquid).

[0113] An anti-glare layer 120 is formed on the surface of the curved glass (glass substrate 110 ) by spraying.

[0114] Specifically, the organic / inorganic nano anti-glare coating is diluted to a mass percentage of 5‰ to 15‰, atomized by a spray gun at an atomization pressure of 0.14Mpa to 0.16Mpa, sprayed onto the curved glass surface, and baked at 100°C to 150°C for 30 minutes to obtain the anti-glare layer 120.

[0115] Optionally, the low surface energy additive includes a combination of one or more of hydroxy silicone oil, water-soluble silicone oil, hydrogen-containing silicone oil, and polyether-modified silicone oil.

[0116] Optionally, the mixed solvent includes ethanol and an aqueous solvent.

[0117] In some embodiments, optionally, the average particle size d1 of the plurality of inorganic particles 131 satisfies d1>300 nm.

[0118] In this embodiment, the range of values ​​of the average particle size of the plurality of inorganic particles is limited. Specifically, the average particle size of the plurality of inorganic particles 131 is greater than 300 nm. Thus, while achieving the anti-glare effect and increasing the transmittance of light in the anti-glare layer 120, the refractive index of the inorganic particles is made smaller, that is, less than 1.46, ensuring that the light can be incident on the light-receiving surface of the battery string layer 210 through the glass substrate 110 after passing through the anti-glare layer 120, thereby ensuring the power generation of the photovoltaic module 200.

[0119] Optionally, the mass percentage of the inorganic particles 131 in the anti-glare layer 120 is 35% to 45%.

[0120] In some embodiments, optionally, an average particle size d1 of the plurality of inorganic particles 131 satisfies 350 nm≤d1≤500 nm.

[0121] Optionally, the average particle size d1 of the plurality of inorganic particles is any one of 350 nm, 360 nm, 370 nm, 380 nm, 390 nm, 400 nm, 410 nm, 420 nm, 430 nm, 440 nm, 450 nm, 460 nm, 470 nm, 480 nm, 490 nm, and 500 nm.

[0122] In some embodiments, optionally, an average particle size d2 of the plurality of organic particles 132 satisfies 50 nm≤d2≤150 nm.

[0123] Optionally, the average particle size d2 of the plurality of organic particles is any one of 50 nm, 60 nm, 70 nm, 80 nm, 90 nm, 100 nm, 110 nm, 120 nm, 130 nm, 140 nm, and 150 nm.

[0124] Optionally, the mass percentage of the organic particles 132 in the anti-glare layer 120 is 55% to 65%.

[0125] In some embodiments, optionally, the shape of at least one inorganic particle 131 is spherical.

[0126] In this embodiment, the shape of at least one inorganic particle 131 is limited to be spherical, so that when light is incident on the light-receiving surface of the anti-glare layer 120, more light can be refracted in the anti-glare layer 120, that is, the refraction path of the light in the anti-glare layer 120 is further increased, the transmittance of the anti-glare layer 120 is improved, and the power generation efficiency and power generation of the photovoltaic module 200 are improved.

[0127] In some embodiments, optionally, each inorganic particle 131 includes a interconnected hollow structure and a pore structure; and / or a porosity of each inorganic particle 131 is greater than 30%.

[0128] In this embodiment, each inorganic particle 131 includes a connected hollow structure and a pore structure, that is, each inorganic particle 131 has an internal hollow gap structure, so that while the anti-glare layer 120 achieves an anti-glare effect, the transmittance of the anti-glare layer 120 can be significantly increased, so that the anti-glare layer 120 has a transmittance-enhancing effect, thereby improving the power generation capacity of the photovoltaic module 200.

[0129] Moreover, since each inorganic particle 131 includes a connected hollow structure and a hole structure, the refractive index of the inorganic particle 131 can be made smaller. Even if the refractive index of the inorganic particle 131 is less than 1.46, it is ensured that the light can pass through the anti-glare layer 120 and then through the glass substrate 110 to enter the light-receiving surface of the battery string layer 210, thereby ensuring the power generation of the photovoltaic module 200.

[0130] Optionally, the pore structure is mesoporous, that is, each inorganic particle 131 has a hollow-mesoporous void structure.

[0131] The porosity of each inorganic particle 131 is greater than 30%, so that the transmittance of the anti-glare layer 120 can be further increased, and the power generation efficiency of the photovoltaic module 200 can be improved.

[0132] In some embodiments, the inorganic particles 131 may include one of silicon dioxide particles, titanium dioxide particles, aluminum oxide particles, zinc oxide particles, and tin dioxide particles.

[0133] In this embodiment, by coating the surface of the glass substrate 110 with a single layer of inorganic oxide nanoparticles having a uniformly dispersed hollow-mesoporous pore structure, the nano-coating (anti-glare layer 120) glass can achieve the effect of anti-glare and light transmission, thereby improving the power generation efficiency of the anti-glare curved surface component (photovoltaic component 200).

[0134] like Figure 1 As shown, in some embodiments, optionally, the thickness m1 of the anti-glare layer 120 satisfies 1μm≤m1≤10μm; and / or the radius R of the curved glass plate satisfies 50mm≤R≤150mm; and / or the thickness m2 of the curved glass plate satisfies 3mm≤m2≤8mm.

[0135] In this embodiment, the range of values ​​of the thickness of the anti-glare layer 120 is limited. Specifically, the thickness of the anti-glare layer 120 is between 1 μm and 10 μm. It is understandable that if the thickness of the anti-glare layer 120 is too thin, the anti-glare effect is poor, or the anti-glare effect is not achieved, which is easy to cause light pollution. If the thickness of the anti-glare layer 120 is too thick, the transmittance of the anti-glare layer 120 will be reduced, affecting the power generation efficiency of the photovoltaic module 200.

[0136] By setting the thickness of the anti-glare layer 120 between 1 μm and 10 μm, the anti-glare effect can be achieved while ensuring the transmittance of the anti-glare layer 120 , and the refractive index of the inorganic particles 131 can be made less than 1.46, ensuring that the light can be incident on the light-receiving surface of the battery string layer 210 through the glass substrate 110 after passing through the anti-glare layer 120 , thereby ensuring the power generation and power generation efficiency of the photovoltaic module 200 .

[0137] The curved surface radius R of the curved glass plate satisfies 50 mm ≤ R ≤ 150 mm. Optionally, the curved glass plate is a multi-peak and multi-trough arc-shaped curved glass.

[0138] The thickness m2 of the curved glass plate satisfies 3mm≤m2≤8mm.

[0139] It is understandable that the thickness of the anti-glare layer obtained by using different preparation processes is different.

[0140] like Figure 4 As shown, in some embodiments, optionally, the curved glass plate is provided with a positioning structure 140 .

[0141] In this embodiment, it is understandable that due to the structure of the curved glass plate, the curved glass plate is difficult to fix during the preparation of the photovoltaic glass 100, resulting in uneven thickness of the anti-glare layer 120 coated on the curved glass plate, affecting the anti-glare effect.

[0142] By setting a positioning structure 140 on the curved glass plate, the curved glass plate can be positioned during the coating process of the anti-glare layer 120, which solves the problem of difficulty in uniform coating of the curved glass plate and ensures the uniformity of the thickness of the anti-glare layer 120 at various locations, which is beneficial to improving the anti-glare effect of the photovoltaic glass 100.

[0143] like Figure 4 As shown, in some embodiments, optionally, the curved glass plate includes a first end 150 and a second end 160 opposite to each other, and the positioning structure 140 includes a first positioning hole 141 and a second positioning hole 142, wherein the first positioning hole 141 is configured to be close to the first end 150, the second positioning hole 142 is opposite to the first positioning hole 141, and the second positioning hole 142 is configured to be close to the second end 160.

[0144] In this embodiment, the positioning structure 140 is defined to include a first positioning hole 141 and a second positioning hole 142. Specifically, the first positioning hole 141 is close to the first end 150, and the second positioning hole 142 is close to the second end 160. The first positioning hole 141 and the second positioning hole 142 are opposite to each other, that is, the first positioning hole 141 and the second positioning hole 142 are symmetrically distributed at both ends of the curved glass plate. By providing the first positioning hole 141 and the second positioning hole 142, the curved glass plate can be effectively positioned during the preparation process of the photovoltaic glass 100, ensuring the uniformity of the thickness of the anti-glare layer 120 at various locations, which is conducive to improving the anti-glare effect of the photovoltaic glass 100.

[0145] Optionally, in the process of preparing the photovoltaic glass 100, after the curved glass plate is cleaned, the curved glass plate is positioned using the first positioning hole 141 and the second positioning hole 142, the anti-glare coating liquid 500 is output to the screen mold 300 through a metering pump, and the anti-glare coating liquid 500 output to the screen mold 300 is evenly scraped using a scraper 400, thereby forming an anti-glare wet film on the curved glass plate, and then high-temperature baking and curing treatment are performed to obtain the photovoltaic glass 100.

[0146] According to a second aspect of the present invention, there is provided a photovoltaic module 200, comprising the photovoltaic glass 100 provided in any of the above embodiments, and thus having all the beneficial technical effects of the photovoltaic glass 100, which will not be described in detail herein.

[0147] like Figure 3 As shown, further, the photovoltaic module 200 also includes a cell string layer 210, a first adhesive film layer 220, a second adhesive film layer 230 and a backplane 240, wherein the first adhesive film layer 220 is located between the photovoltaic glass 100 and the cell string layer 210, the light-receiving surface of the cell string layer 210 faces the first adhesive film layer 220, and the second adhesive film layer 230 is arranged between the backlight surface of the cell string layer 210 and the backplane 240.

[0148] The photovoltaic module 200 provided in the embodiment of the present invention includes a photovoltaic glass 100, a cell string layer 210, a first adhesive film layer 220, a second adhesive film layer 230 and a back panel 240. Specifically, the first adhesive film layer 220 is located between the photovoltaic glass 100 and the cell string layer 210, and the light-receiving surface of the cell string layer 210 faces the first adhesive film layer 220, that is, the photovoltaic glass 100 is the front panel glass of the photovoltaic module 200.

[0149] The second adhesive film layer 230 is located between the backlight surface of the battery string layer 210 and the back plate 240. Thus, the photovoltaic glass 100, the battery string layer 210 and the back plate 240 are bonded together. The light-receiving surface of the battery string layer 210 is protected by the photovoltaic glass 100, and the backlight surface of the battery string layer 210 is protected by the back plate 240.

[0150] Optionally, the first film layer 220 includes one of a high-cutoff EVA (ethylene-vinyl acetate copolymer) film, a POE (polyethylene octene co-elastomer) film, an EPE (EVA / POE / EVA) three-layer co-extruded film or a PVB (polyvinyl butyral) film.

[0151] Optionally, the second film layer 230 includes a highly transparent packaging film. Specifically, the second film layer 230 includes one of a high-cutoff EVA film, a POE film, an EPE (EVA / POE / EVA) three-layer co-extruded film or a PVB film.

[0152] Optionally, the cell string layer 210 includes a crystalline silicon cell string layer, specifically, the crystalline silicon cell string layer includes an XBC (interdigitated back contact solar cell), an MWT (metal wire-wound through-hole solar cell) or a shingled solar cell without a metal grid line. It is understandable that the positive and negative metal electrodes of the above crystalline silicon cell string layer are both led out from the back.

[0153] like Figure 3As shown, in some embodiments, optionally, the thickness m3 of the first adhesive film layer 220 satisfies 0.3mm≤m3≤0.8mm; and / or the thickness m4 of the second adhesive film layer 230 satisfies 0.3mm≤m4≤0.8mm; and / or the thickness m5 of the back panel 240 satisfies 0.3mm≤m5≤0.7mm; and / or the back panel 240 includes a flexible part.

[0154] Optionally, the back plate 240 is made of a flexible polymer material, wherein the flexible polymer material includes PET (thermoplastic polyester), CPC (polyurethane) or a glass fiber composite material.

[0155] According to a third aspect of the present invention, a method for preparing photovoltaic glass is provided, which is used for the photovoltaic glass 100 provided by any of the above technical solutions, and thus has all the beneficial technical effects of the photovoltaic glass 100, which will not be repeated here.

[0156] In one embodiment according to the present invention, Figure 5 As shown, a method for preparing photovoltaic glass is proposed, and the preparation method comprises:

[0157] Step 102, cleaning the curved glass plate;

[0158] Step 104, after the cleaning process is completed, the screen mold is placed on the cleaned surface of the curved glass plate, and the anti-glare coating liquid is output to the screen mold, and the anti-glare coating liquid on the screen mold is evenly scraped with a scraper to form an anti-glare wet film on the curved glass plate;

[0159] Step 106, baking the curved glass plate coated with the anti-glare wet film at a first temperature, and obtaining a photovoltaic glass substrate when the baking time reaches a set time;

[0160] Step 108, curing the photovoltaic glass substrate at a second temperature to obtain photovoltaic glass.

[0161] The method for preparing photovoltaic glass provided in an embodiment of the present invention first cleans the curved glass plate. The cleaning treatment can enhance the lipophilicity of the curved glass plate, thereby improving the bonding strength between the anti-glare layer and the curved glass plate, which is beneficial to improving the reliability of the photovoltaic glass and the photovoltaic modules having the photovoltaic glass.

[0162] After cleaning, the anti-glare coating liquid is output to the screen mold through a metering pump, and the anti-glare coating liquid output to the screen mold is evenly scraped with a scraper to form an anti-glare wet film on the curved glass plate. Optionally, the thickness of the anti-glare wet film is 100 μm to 150 μm, and the screen printing speed is 10 m / min to 15 m / min.

[0163] The curved glass plate formed with the anti-glare wet film is baked at high temperature to make the anti-glare wet film quickly solidify and take shape. After the baking time reaches the set time, a photovoltaic glass substrate is obtained. The photovoltaic glass substrate is then cured. After the curing process is completed, a stable anti-glare layer, namely photovoltaic glass, is obtained on the curved glass plate.

[0164] Optionally, the anti-glare layer has a thickness of 15 μm to 30 μm.

[0165] In some embodiments, optionally, the curved glass plate is cleaned, specifically comprising: using an esterifying agent to clean the curved glass plate.

[0166] In this embodiment, the curved glass plate is cleaned with an esterifying agent to enhance the lipophilicity of the curved glass plate, thereby improving the bonding strength between the anti-glare layer and the curved glass plate, which is beneficial to improving the reliability of the photovoltaic glass and the photovoltaic module having the photovoltaic glass.

[0167] Optionally, the esterification agent includes one of hexamethyldisiloxane, trimethylsiloxane and dimethylchlorosilane.

[0168] In some embodiments, optionally, the screen mold includes a flexible screen mold; and / or the scraper includes a flexible scraper; and / or the width of the scraper is smaller than the width of the screen mold; and / or the first temperature is greater than or equal to 120°C and less than or equal to 150°C; and / or the second temperature is greater than or equal to 50°C and less than or equal to 55°C; and / or the setting time is greater than or equal to 30 min and less than or equal to 60 min.

[0169] In this embodiment, the screen mold is a flexible part. Optionally, the screen mold material can be one of polyurethane, polyester or silicone rubber. It can be understood that the flexible part has good ductility and elasticity, which is conducive to making the anti-glare layer coating more uniform. Optionally, the mesh number of the screen mold is 200 mesh to 500 mesh. Optionally, the size of the screen mold is 450mm×800mm.

[0170] The scraper is a flexible part. Optionally, the scraper material can be one of polyurethane, silicone rubber or natural rubber, and the Shore hardness is 60 to 80 degrees. Optionally, the scraper has a thickness of 1 mm to 2 mm and a width of 400 mm to 420 mm. It can be understood that the flexible scraper has good wear resistance and resilience. In the process of applying the anti-glare coating liquid, it can achieve uniform coating without destroying the internal structure of the anti-glare coating liquid, thereby ensuring the anti-glare effect of the photovoltaic glass.

[0171] In addition, at least one of the screen mold and the scraper is a flexible member, which can better fit the curved glass plate during the coating process, which is beneficial to improving the uniformity of the anti-glare layer after coating.

[0172] The width of the scraper is smaller than the width of the screen mold, so that during the coating process, the anti-glare coating liquid can be prevented from gathering on both sides of the curved glass plate, thereby causing the problem of uneven thickness of the anti-glare layer, further ensuring the uniformity of the anti-glare layer after coating.

[0173] Optionally, when the photovoltaic glass substrate is subjected to a curing treatment, the curing treatment lasts for 24 hours.

[0174] In the description of this specification, the terms "connection", "installation", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0175] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0176] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A photovoltaic glass, characterized in that: include: a glass substrate, wherein the glass substrate is configured as a curved glass plate; An anti-glare layer, disposed on the light-receiving side of the glass substrate, the anti-glare layer being light-transmissive; Wherein, the anti-glare layer comprises a plurality of anti-reflection particles, and at least two of the plurality of anti-reflection particles have different particle sizes.

2. The photovoltaic glass according to claim 1, characterized in that: The plurality of antireflection particles include a plurality of inorganic particles; Among the plurality of inorganic particles, at least two of the inorganic particles have different particle sizes.

3. The photovoltaic glass according to claim 1, characterized in that: The plurality of anti-reflection particles include a plurality of inorganic particles and a plurality of organic particles; Among the plurality of inorganic particles, at least two of the inorganic particles have different particle sizes; and / or at least one of the inorganic particles has a particle size different from that of at least one of the organic particles.

4. The photovoltaic glass according to claim 2 or 3, characterized in that: The average particle size d1 of the plurality of inorganic particles satisfies d1>300 nm.

5. The photovoltaic glass according to claim 4, characterized in that: An average particle size d1 of the plurality of inorganic particles satisfies 350nm≤d1≤500nm.

6. The photovoltaic glass according to claim 3, characterized in that: An average particle size d2 of the plurality of organic particles satisfies 50nm≤d2≤150nm.

7. The photovoltaic glass according to claim 2 or 3, characterized in that: Each of the inorganic particles comprises a hollow structure and a pore structure that are interconnected; and / or The porosity of each of the inorganic particles is greater than 30%.

8. The photovoltaic glass according to claim 2 or 3, characterized in that: The inorganic particles include one of silicon dioxide particles, titanium dioxide particles, aluminum oxide particles, zinc oxide particles and tin dioxide particles.

9. The photovoltaic glass according to any one of claims 1 to 3, characterized in that: The thickness m1 of the anti-glare layer satisfies 1 μm≤m1≤10 μm; and / or The radius of curvature R of the curved glass plate satisfies 50 mm ≤ R ≤ 150 mm; and / or The thickness m2 of the curved glass plate satisfies 3mm≤m2≤8mm.

10. The photovoltaic glass according to any one of claims 1 to 3, characterized in that: The curved glass plate is provided with a positioning structure.

11. The photovoltaic glass according to claim 10, characterized in that: The curved glass plate comprises a first end and a second end facing each other, and the positioning structure comprises: a first positioning hole, the first positioning hole being configured to be close to the first end; The second positioning hole is opposite to the first positioning hole, and the second positioning hole is configured to be close to the second end.

12. A photovoltaic module, characterized in that: include: The photovoltaic glass according to any one of claims 1 to 11; A battery string layer and a first adhesive film layer, wherein the first adhesive film layer is located between the photovoltaic glass and the battery string layer, and the light-receiving surface of the battery string layer faces the first adhesive film layer; A second adhesive film layer and a back plate, wherein the second adhesive film layer is arranged between the backlight surface of the battery string layer and the back plate.

13. A method for preparing photovoltaic glass, characterized in that: For the photovoltaic glass according to any one of claims 1 to 11, the preparation method comprises: Cleaning of curved glass panels; After the cleaning process is completed, the screen mold is placed on the cleaned surface of the curved glass plate, and the anti-glare coating liquid is output onto the screen mold, and the anti-glare coating liquid on the screen mold is evenly scraped with a scraper to form an anti-glare wet film on the curved glass plate; Baking the curved glass plate coated with the anti-glare wet film at a first temperature, and obtaining a photovoltaic glass substrate when the baking time reaches a set time; The photovoltaic glass substrate is cured at a second temperature to obtain the photovoltaic glass.

14. The method for preparing photovoltaic glass according to claim 13, characterized in that: The cleaning process of the curved glass plate specifically includes: The curved glass plate is cleaned by using an esterifying agent.

15. The method for preparing photovoltaic glass according to claim 13 or 14, characterized in that: The screen mold comprises a flexible screen mold; and / or The scraper comprises a flexible scraper; and / or The width of the scraper is smaller than the width of the screen mold; and / or The first temperature is greater than or equal to 120° C. and less than or equal to 150° C.; and / or The second temperature is greater than or equal to 50°C and less than or equal to 55°C; and / or The set duration is greater than or equal to 30 minutes and less than or equal to 60 minutes.

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