A photovoltaic glass, photovoltaic module

Abstract

The utility model provides a kind of photovoltaic glass, photovoltaic module, it is related to photovoltaic technical field.To solve the technical problem that photovoltaic glass is easy to dust.The photovoltaic glass, including body and multiple water-repellent structures and multiple first hydrophilic structures, water-repellent structure and first hydrophilic structure are sequentially arranged in body's surface along first direction alternately;At least one first edge of the surface of body is formed with first hydrophilic structure, and the first edge refers to the part of the surface of body close to the end of body in the first direction, and the first direction is the direction parallel to the long side or short side of photovoltaic glass.The photovoltaic glass can make dust-carrying water droplets quickly roll down, improve dust removal effect.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic technology, and in particular to a photovoltaic glass and a photovoltaic module. Background Technology

[0002] The statements in this section are merely background information related to this utility model and do not necessarily constitute prior art.

[0003] Photovoltaic modules generally consist of multiple layers of materials stacked together. For example, from the light-receiving side to the back-lighting side, they typically include a front cover, a front encapsulating film, a photovoltaic cell string array, a rear encapsulating film, and a rear cover. The front cover of a photovoltaic module consists of photovoltaic glass, whose surface is generally hydrophilic. When there is morning dew or very little rainfall, water droplets mixed with dust adhere to the surface of the photovoltaic glass and do not quickly roll off. As a result, even after the water evaporates, the dust remains on the surface, reducing the photoelectric conversion efficiency of the photovoltaic cells. Utility Model Content

[0004] The purpose of this invention is to provide a photovoltaic glass and a photovoltaic module to solve the technical problem of easy dust accumulation in photovoltaic glass.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] In a first aspect, the present invention provides a photovoltaic glass, comprising a body and a plurality of hydrophobic structures and a plurality of first hydrophilic structures, wherein the hydrophobic structures and the first hydrophilic structures are arranged alternately along a first direction on the surface of the body.

[0007] A first hydrophilic structure is provided on at least one first edge of the surface of the body, the first edge being a portion of the surface of the body near the end of the body in the first direction, the first direction being a direction parallel to the long or short side of the photovoltaic glass.

[0008] According to at least one embodiment of the present invention, in the first direction, the width of the hydrophobic structure is greater than or equal to the width of the first hydrophilic structure; and / or,

[0009] The width of the first hydrophilic structure on the first edge is greater than the width of the first hydrophilic structure on the surface of the body, excluding the first edge.

[0010] According to at least one embodiment of the present invention, the hydrophobic structure includes a micron or nanometer-scale pore structure formed on the surface of the body, wherein the size of the pores decreases from the opening to the bottom wall; or,

[0011] The hydrophobic structure includes a first film layer formed on the surface of the body, the first film layer being made of a material selected from polytetrafluoroethylene or silane; and / or,

[0012] The first hydrophilic structure includes a second film layer formed on the surface of the body, the second film layer being made of one of SiO2, ZnS, TiO2, ZrO2, Al2O3, and MgF2; and / or,

[0013] The width of the hydrophobic structure in the first direction ranges from 5cm to 80cm; the width of the first hydrophilic structure in the first direction ranges from 3cm to 10cm.

[0014] According to at least one embodiment of the present invention, in the first direction, the width of each of the hydrophobic structures decreases sequentially; or,

[0015] The width of each hydrophobic structure decreases sequentially from the center of the surface of the body to the first edge.

[0016] According to at least one embodiment of the present invention, the photovoltaic glass is used to encapsulate a photovoltaic cell string array, and the hydrophobic structure is located above the corresponding photovoltaic cells of the photovoltaic cell string.

[0017] The width of the hydrophobic structure in the first direction is less than or equal to the width of the photovoltaic cell in the first direction.

[0018] According to at least one embodiment of the present invention, the first hydrophilic structure is located at least above the first edge or the first gap, wherein the first gap refers to the area between two adjacent photovoltaic cells in the first direction;

[0019] The width of the first hydrophilic structure is greater than or equal to the width of the first gap.

[0020] According to at least one embodiment of the present invention, when the width of the first hydrophilic structure in the first direction is greater than the width of the first gap in the first direction, a portion of the first hydrophilic structure extends from above the first gap to above the photovoltaic cell to form an extension portion, and the width of the extension portion in the first direction is less than a preset width.

[0021] The preset width is the sum of the thicknesses of the body and the encapsulating film, and the encapsulating film is used to fix the body and the photovoltaic cell.

[0022] According to at least one embodiment of the present invention, the photovoltaic glass further includes a plurality of second hydrophilic structures spaced apart along a second direction, wherein the plurality of second hydrophilic structures intersect with the plurality of first hydrophilic structures to form a mesh structure;

[0023] The second direction is perpendicular to the first direction.

[0024] According to at least one embodiment of the present invention, the photovoltaic glass is used to encapsulate a photovoltaic cell string array, and the second hydrophilic structure is located above the second edge or the second gap.

[0025] The second gap refers to the area between two adjacent photovoltaic cells in the second direction, and the second edge refers to the portion of the surface of the body near the end of the body in the second direction; and / or,

[0026] In the second direction, the width of the second hydrophilic structure ranges from 3cm to 5cm; and / or,

[0027] The second hydrophilic structure includes a third film layer formed on the surface, the material of which includes one of SiO2, ZnS, TiO2, ZrO2, Al2O3 and MgF2.

[0028] Secondly, this utility model provides a photovoltaic module, including a photovoltaic laminate and a frame covering the circumferential edge of the photovoltaic laminate, wherein the photovoltaic laminate includes the photovoltaic glass described in the first aspect.

[0029] According to at least one embodiment of the present invention, at least one of the first edges is exposed, and the portion of the frame near the at least one first edge is flush with the first edge.

[0030] In one or more technical solutions provided in the exemplary embodiments of this utility model, at least one of the following beneficial effects can be achieved.

[0031] In practical applications, the photovoltaic glass of this exemplary embodiment is installed outdoors at an angle along a first direction, meaning one first edge of the photovoltaic glass is at the top of the photovoltaic module, and the other first edge is at the bottom of the photovoltaic module. When the hydrophobic structure and the first hydrophilic structure are alternately arranged on the surface of the photovoltaic glass, dust on the hydrophobic structure is removed by water droplets such as rainwater. However, the rolling distance of the water droplets carrying dust is limited. When they roll to the first hydrophilic structure below, they can converge to form larger water droplets and continue rolling rapidly. This cycle continues until they roll to the first edge at the bottom. Because the first edge has the first hydrophilic structure, there is no problem with the hydrophobic structure where the surface tension of water hinders the flow of water droplets carrying dust. Based on this, the photovoltaic glass of this exemplary embodiment can make the dust-laden water droplets roll down quickly, reducing the possibility that the dust will still adhere to the surface after the water evaporates due to slow rolling, thus improving the dust removal effect. Attached Figure Description

[0032] The accompanying drawings illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the principles of the present invention. These drawings are included to provide a further understanding of the present invention and are incorporated in and constitute a part of this specification.

[0033] Figure 1 This is a schematic diagram of the structure of photovoltaic glass according to an embodiment of the present invention;

[0034] Figure 2 This is a schematic diagram of the structure of a photovoltaic module according to an embodiment of the present invention;

[0035] Figure 3 This is a schematic diagram of the structure of photovoltaic glass according to another embodiment of the present invention;

[0036] Figure 4 This is a structural schematic diagram of a photovoltaic module according to another embodiment of the present invention.

[0037] Figure label:

[0038] 11. First hydrophilic structure; 12. Second hydrophilic structure;

[0039] 20. Hydrophobic structure;

[0040] 31. First edge; 32. Second edge;

[0041] 40. Battery cell; 41. First gap; 42. Second gap. Detailed Implementation

[0042] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0043] The photovoltaic glass of photovoltaic modules is prone to dust accumulation. In the morning dew or when there is very little rainfall, especially when the photovoltaic modules installed on industrial and commercial roofs are tilted at an angle of only 2°-5°, or when the photovoltaic modules on the tracking brackets are in night mode, water droplets mixed with dust adhere to the surface of the cover glass and do not roll off quickly. As a result, even after the water evaporates, the dust still adheres to the surface of the cover glass, which leads to a reduction in the photoelectric conversion efficiency of the photovoltaic modules.

[0044] To address the aforementioned issues, the photovoltaic glass provided in the exemplary embodiment of this utility model features alternating hydrophilic and hydrophobic structures along the tilt direction of the photovoltaic module after encapsulation. This allows water droplets carrying dust on the hydrophobic structure to converge into larger droplets on the hydrophilic structure below. These larger water droplets can then roll off more quickly to the bottom of the photovoltaic module, improving dust removal efficiency and ensuring the photoelectric conversion efficiency of the photovoltaic module.

[0045] Figure 1 This is a structural schematic diagram of photovoltaic glass according to an embodiment of the present invention. See also... Figure 1 The photovoltaic glass of an exemplary embodiment of this utility model includes a body and a plurality of hydrophobic structures 20 and a plurality of first hydrophilic structures 11. The hydrophobic structures 20 and the first hydrophilic structures 11 are arranged alternately along a first direction on the surface of the body. A first hydrophilic structure 11 is formed on at least one first edge 31 of the surface of the body. The first edge 31 refers to the portion of the surface of the body near the end of the body in the first direction. The first direction is a direction parallel to the long side or short side of the photovoltaic glass.

[0046] In practical applications, after photovoltaic glass encapsulates photovoltaic cell string arrays to form photovoltaic modules, the photovoltaic modules are generally installed at a certain tilt angle with the ground. The two first edges 31 of the photovoltaic glass are located at the top and bottom of the photovoltaic module, respectively.

[0047] Forming a first hydrophilic structure 11 on a first edge 31 at the bottom of the photovoltaic module allows dust-laden water droplets that roll onto the first edge 31 to converge and flow out of the photovoltaic module. If the first edge 31 is formed as a hydrophobic structure, the surface tension of the water will prevent the water carrying dust from flowing out of the photovoltaic module.

[0048] In some implementations, such as Figure 1As shown, when a first hydrophilic structure 11 is formed on both first edges 31 of the photovoltaic glass, either of the two first edges 31 can be set at the bottom during the installation of the encapsulated photovoltaic module, thus making the installation more flexible.

[0049] Along the first direction, hydrophobic structures 20 and first hydrophilic structures 11 are alternately arranged on the surface of the body. Water droplets carrying dust can roll down the hydrophobic structure 20 due to its small wetting angle, but the rolling distance is limited. When they roll to the first hydrophilic structure 11 below, the water droplets converge into larger droplets in that area, allowing them to continue rolling downwards. This cycle continues until they reach the first hydrophilic structure 11 at the bottom first edge 31, where they converge and flow out of the module, thus reducing dust residue on the surface of the body. Because this rolling process makes the water droplets roll faster, even if the tilt angle of the photovoltaic module is small or the rainfall is minimal, the water droplets can still roll to the bottom without evaporating during the rolling process, preventing dust from remaining on the surface of the body.

[0050] In some implementations, such as Figure 1 As shown, the width of the hydrophobic structure 20 is greater than the width of the first hydrophilic structure 11. Unless otherwise specified, the widths of the hydrophobic structure 20 and the first hydrophilic structure 11 refer to their widths in the first direction.

[0051] Water droplets carrying dust on the hydrophobic structure 20 can roll off due to their small wetting angle. Therefore, a wider hydrophobic structure 20 is provided on the surface of the body, while the first hydrophilic structure 11, which assists in the gathering and rolling of water droplets, has a smaller width. Furthermore, the hydrophobic structure 20 also has the characteristics of being dustproof and not easily trapping dust. Thus, the above arrangement can ensure the dust removal effect on the entire surface of the body.

[0052] It is understandable that the width of the hydrophobic structure 20 can also be the same as the width of the first hydrophilic structure 11.

[0053] For example, the width of the hydrophobic structure 20 can range from 5cm to 80cm, such as 10cm, 15cm, 20cm, 25cm, 30cm, 35cm, 40cm, 45cm, 50cm, 55cm, 60cm, 65cm, 70cm, 75cm, etc.

[0054] For example, to accelerate the rolling of raindrops, small raindrops converge and merge into larger raindrops, overcoming surface tension to trigger rolling. Experiments show that water droplets on hydrophilic glass need to reach a diameter of 4mm to 6mm to roll. The width of the first hydrophilic structure 11 ranges from 3mm to 10mm. For example, it can be 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 6.5mm, 7mm, 7.5mm, 8mm, 8.5mm, 9mm, 9.5mm, etc., preferably 3mm to 5mm.

[0055] Considering that the first edge 31 is the last area where dust-laden water droplets flow out of the photovoltaic module, setting the width of the first hydrophilic structure 11 on the first edge 31 to be greater than the width of the first hydrophilic structure 11 on other areas of the main body surface excluding the first edge 31 can ensure better water droplet aggregation, making it easier for them to flow out of the photovoltaic module. If the first edge 31 is a hydrophobic structure, water droplets will not converge to form a large flow of water out of the photovoltaic module frame, and the hydrophobicity will also prevent muddy water from flowing down to the photovoltaic module frame.

[0056] There are several ways to form the hydrophobic structure 20. Three methods are illustrated below.

[0057] The first method involves using laser etching or chemical wet etching to create micrometer- or nanometer-deep pore structures on the surface of photovoltaic glass. These pores are open at angles, with the size decreasing from the opening to the bottom wall—a structure that is larger at the top and smaller at the bottom. This allows for easier and more thorough dust removal. It is understood that the pore structure can be columnar or grooved.

[0058] The second method involves forming the aforementioned micron or nanopore structure using a roller calendering method before the photovoltaic glass is cured during its formation process.

[0059] The third method: The hydrophobic structure 20 includes a first film layer formed on the surface of the body. The first film layer is made of a low surface energy transparent material, such as polytetrafluoroethylene or silane. Specifically, it adopts the roller coating process in the existing photovoltaic antireflective film manufacturing method. Unlike existing roller coating molds, the surface of the existing roller is flat. The coating roller used in this invention has a concave-convex structure. The coating liquid is applied to the convex areas of the roller, while the coating liquid is not applied to the concave areas. In this way, the coating liquid in the convex areas rolls onto the photovoltaic glass surface and forms a layer of coating liquid on the surface, while the corresponding positions in the concave areas do not have coating liquid applied. Then, it is dried to form a transparent first film layer. Exemplarily, the corresponding first film layer can also be deposited on the surface of the photovoltaic glass by physical vapor deposition or chemical vapor deposition.

[0060] The first hydrophilic structure 11 can also be formed using the third method of the hydrophobic structure 20, by coating the coating solution onto the surface of the photovoltaic glass to form a second film layer. The second film layer is a high surface energy transparent coating, such as a nano-SiO2 anti-reflection and anti-reflection film. The material of the second film layer includes one of ZnS, TiO2, ZrO2, Al2O3 and MgF2.

[0061] For example, the thickness of the first and second films can be 80nm to 160nm, such as 90nm, 100nm, 110nm, 120nm, 130nm, 140nm, 150nm, etc. On the one hand, it can achieve the effect of reducing reflection; on the other hand, if it is too thin, the film will be uneven and prone to breakage, while if it is too thick, it will seriously affect the light transmittance.

[0062] In some embodiments, the width of each hydrophobic structure 20 decreases sequentially in the first direction. For example, after the photovoltaic module encapsulated in photovoltaic glass is installed, the width of the hydrophobic structure 20 can decrease sequentially from the first edge 31 at the top to the first edge 31 at the bottom. Since raindrops carry more dust during rolling and the rolling distance gradually shortens, the sequential decrease in width of the hydrophobic structure 20 from top to bottom avoids the problem of water droplets being unable to roll off smoothly due to the wider lower hydrophobic structure 20.

[0063] Considering the flexibility of photovoltaic module installation, both first edges 31 of the photovoltaic glass can be set to be located at the bottom. Therefore, from the middle of the surface of the body to the first edge 31, the width of each hydrophobic structure 20 decreases sequentially, that is, the middle hydrophobic structure 20 is wider, while the hydrophobic structures 20 near the top and bottom are narrower.

[0064] Figure 2 This is a schematic diagram of the structure of a photovoltaic module according to an embodiment of the present invention. See also... Figure 2 The photovoltaic glass is encapsulated on the light-receiving surface of the photovoltaic cell string array by an encapsulating film, wherein the hydrophobic structure 20 is located above the corresponding cell 40 of the photovoltaic cell string; the width of the hydrophobic structure 20 is less than or equal to the width of the photovoltaic cell 40 in the first direction.

[0065] In practical applications, each hydrophobic structure 20 spans across a row of solar cells 40 in the second direction. Its width can completely cover the row of solar cells 40 or be slightly smaller than the width of the row of solar cells 40. Because the hydrophobic structure 20 and the first hydrophilic structure 11 have different transmittances, the incident light intensity on the solar cells 40 varies, resulting in uneven current distribution. Therefore, the hydrophobic structure 20 is positioned on a row of solar cells 40, while the first hydrophilic structure 11 is positioned in the first gap 41 between the upper and lower rows of solar cells 40. This minimizes the occurrence of the aforementioned situation. The first gap 41 refers to the area between two adjacent photovoltaic cells 40 in the first direction.

[0066] In some embodiments, the first hydrophilic structure 11 corresponds to and is located directly above the first gap 41, and in a first direction, the width of the first hydrophilic structure 11 and the first gap 41 are the same.

[0067] Considering that the width of the first hydrophilic structure 11 corresponds to the width of the first gap 41, the spacing between the solar cells 40 tends to gradually decrease as the encapsulation density gradually increases. To ensure the current-gathering effect of the first hydrophilic structure 11, the first hydrophilic structure 11 corresponds to the first gap 41, and the width of the first hydrophilic structure 11 is slightly larger than the first gap 41. That is, a portion of the first hydrophilic structure 11 extends from above the first gap 41 to above the photovoltaic cell 40 to form an extension. The width of the extension in the first direction is less than a preset width. The preset width is the sum of the thickness of the body and the encapsulating film, which is used to fix the body and the photovoltaic cell 40. In other words, the two extensions of the first hydrophilic structure 11 are located above the top and bottom edges of two adjacent solar cells 40 in the first direction, respectively.

[0068] In photovoltaic modules, the interaction between the photovoltaic glass and the internal encapsulating film leads to multiple reflections and scatterings of light. Considering the multiple refractions and reflections of light at the interface between the photovoltaic glass and the encapsulating film, and the different scattering of different wavelengths in the medium, the range of light that can bypass the first hydrophilic structure 11 and reach the solar cell 40 varies. Therefore, the width of the extension in the first direction is selected to be less than a preset width, and this preset width is the sum of the thicknesses of the body and the encapsulating film. This effectively avoids the current mismatch caused by the difference in light intensity at the edge of the solar cell due to the first hydrophilic structure 11 and the difference in light intensity inside the solar cell 40, thereby improving the reliability of the photovoltaic cell. This preset width is an empirical value obtained by combining the thickness and refractive index parameters of the body and the encapsulating film, as well as the variation in the angle of sunlight throughout the day.

[0069] Figure 3 This is a structural schematic diagram of a photovoltaic glass according to another embodiment of the present invention. See also... Figure 3The photovoltaic glass of the exemplary embodiment of the present invention further includes a plurality of second hydrophilic structures 12 spaced apart along a second direction, and the plurality of second hydrophilic structures 12 intersect with a plurality of first hydrophilic structures 11 to form a grid-like structure; wherein, the second direction is perpendicular to the first direction.

[0070] Since photovoltaic modules are not strictly tilted at a vertical angle after installation, there may be some uncertainty in the direction of the tilt. In this case, the direction of water droplets rolling will deviate to one side of the photovoltaic module. The deviation in the rolling direction of the water droplets increases the rolling distance on the hydrophobic structure 20, which in turn increases the difficulty of the water droplets falling. Therefore, a second hydrophilic structure 12 is added to the surface of the photovoltaic glass so that even if the water droplets roll in a direction that deviates to both sides, they can be gathered into large water droplets on the second hydrophilic structure 12 and roll downwards until they flow out of the photovoltaic module.

[0071] For example, in the second direction, the width of the second hydrophilic structure 12 is in the range of 3cm to 5cm, such as 3.5cm, 4cm, 4.5cm, etc.

[0072] In some embodiments, a plurality of second hydrophilic structures 12 are disposed at equal intervals along a second direction on the surface of the photovoltaic glass, such as... Figure 3 As shown.

[0073] In other embodiments, multiple second hydrophilic structures 12 are located above the second edge 32 or the second gap 42. Since the transmittance of the hydrophobic structure 20 and the second hydrophilic structure 12 differs, resulting in different incident light intensities in the solar cell 40, the aforementioned second hydrophilic structures 12, located above the second gap 42 and the second edge 32, can reduce the uneven current distribution in the solar cell 40 caused by the different incident light intensities. The second gap 42 refers to the region between two adjacent photovoltaic cells 40 in the second direction, and the second edge 32 refers to the portion of the surface of the body near the end of the body in the second direction, such as... Figure 4 As shown, Figure 4 This is a structural schematic diagram of a photovoltaic module according to another embodiment of the present invention.

[0074] For example, the second hydrophilic structure 12 can be formed in the same way as the first hydrophilic structure 11. For example, a transparent third film layer can be formed by coating the photovoltaic glass surface with a coating solution. The third film layer is a high surface energy coating, such as a nano-SiO2 anti-reflection and anti-reflection film, or a hydrophilic film such as ZnS, TiO2, ZrO2, Al2O3 and MgF2.

[0075] An exemplary embodiment of this utility model also provides a photovoltaic module, including a photovoltaic laminate and a frame covering the circumferential edge of the photovoltaic laminate, wherein the photovoltaic laminate includes photovoltaic glass according to any of the above embodiments.

[0076] A photovoltaic module includes a photovoltaic laminate and a frame. The photovoltaic laminate comprises five layers of material stacked together, which, from the light-receiving side (front) to the back side (back), sequentially include photovoltaic glass, an encapsulating film, a photovoltaic cell string array, another encapsulating film, and a rear cover plate. These five layers are placed in a laminator, where heating and pressure melt the two encapsulating films, forming a strong bond between the layers, thus creating the finished photovoltaic laminate. A frame is then attached to seal the edges of the laminate and provide support.

[0077] In a photovoltaic module, at least one first edge is exposed, and the portion of the frame near at least one first edge is flush with the first edge.

[0078] A conventional photovoltaic (PV) module frame has a roughly U-shaped groove to accommodate the edge of the laminate (the three walls of the U-shaped groove cover the light-receiving surface, side surface, and back surface of the laminate's edge, respectively) and is sealed with silicone. This means that at least a portion of the light-receiving surface of the first edge 31 of the PV glass is covered by the A-side of the frame (the top wall of the U-shaped groove). Therefore, this A-side protrudes above the PV glass, allowing water to remain at the bottom of the PV module. Alternatively, a frame without an A-side at the bottom can be used to cover the edge of the PV laminate (covering only the side surface and back surface of the laminate's edge, leaving the first edge exposed). This means the top of the frame at the bottom of the PV laminate is flush with the PV glass (first edge 31), allowing mud and water to drain more smoothly from the PV module surface.

[0079] Optionally, the frame portion at both first edges 31 can be set to have no A-side. During photovoltaic module installation, either of the two first edges 31 can be set at the bottom according to the actual situation, which can allow mud and water to drain smoothly from the surface of the photovoltaic module. Therefore, the installation of photovoltaic modules is more flexible.

[0080] The technological advantages of the photovoltaic modules described above compared to existing technologies are the same as those of the photovoltaic glass described above, and will not be repeated here.

[0081] Those skilled in the art should understand that the above embodiments are merely for clearly illustrating the present invention and are not intended to limit the scope of the present invention. Those skilled in the art can make other changes or modifications based on the above disclosure, and these changes or modifications still fall within the scope of the present invention.

Claims

1. A photovoltaic glass, characterized in that, It includes a body and multiple hydrophobic structures and multiple first hydrophilic structures, wherein the hydrophobic structures and the first hydrophilic structures are arranged alternately along a first direction on the surface of the body; A first hydrophilic structure is provided on at least one first edge of the surface of the body, the first edge being a portion of the surface of the body near the end of the body in the first direction, the first direction being a direction parallel to the long or short side of the photovoltaic glass.

2. The photovoltaic glass according to claim 1, characterized in that, In the first direction, the width of the hydrophobic structure is greater than or equal to the width of the first hydrophilic structure; and / or, The width of the first hydrophilic structure on the first edge is greater than the width of the first hydrophilic structure on the surface of the body, excluding the first edge.

3. The photovoltaic glass according to claim 2, characterized in that, The hydrophobic structure includes a micron or nanometer-scale porous structure formed on the surface of the body, wherein the size of the pores decreases from the opening to the bottom wall; or... The hydrophobic structure includes a first film layer formed on the surface of the body, the first film layer being made of a material selected from polytetrafluoroethylene or silane; and / or, The first hydrophilic structure includes a second film layer formed on the surface of the body, the second film layer being made of one of SiO2, ZnS, TiO2, ZrO2, Al2O3, and MgF2; and / or, The width of the hydrophobic structure in the first direction ranges from 5cm to 80cm; the width of the first hydrophilic structure in the first direction ranges from 3cm to 10cm.

4. The photovoltaic glass according to claim 2 or 3, characterized in that, In the first direction, the width of each of the hydrophobic structures decreases sequentially; or, The width of each hydrophobic structure decreases sequentially from the center of the surface of the body to the first edge.

5. The photovoltaic glass according to claim 1, characterized in that, The photovoltaic glass is used to encapsulate a photovoltaic cell string array, and the hydrophobic structure is located above the corresponding photovoltaic cells of the photovoltaic cell string; The width of the hydrophobic structure in the first direction is less than or equal to the width of the photovoltaic cell in the first direction.

6. The photovoltaic glass according to claim 5, characterized in that, The first hydrophilic structure is located at least above the first edge or the first gap, where the first gap refers to the area between two adjacent photovoltaic cells in the first direction; The width of the first hydrophilic structure is greater than or equal to the width of the first gap.

7. The photovoltaic glass according to claim 6, characterized in that, When the width of the first hydrophilic structure in the first direction is greater than the width of the first gap in the first direction, a portion of the first hydrophilic structure extends from above the first gap to above the photovoltaic cell to form an extension, and the width of the extension in the first direction is less than a preset width. The preset width is the sum of the thicknesses of the body and the encapsulating film, and the encapsulating film is used to fix the body and the photovoltaic cell.

8. The photovoltaic glass according to claim 1, characterized in that, The photovoltaic glass also includes a plurality of second hydrophilic structures spaced apart along a second direction, and the plurality of second hydrophilic structures intersect with the plurality of first hydrophilic structures to form a grid structure; Wherein, the second direction is perpendicular to the first direction; Preferably, the photovoltaic glass is used to encapsulate a photovoltaic cell string array, and the second hydrophilic structure is located above the second edge or the second gap; The second gap refers to the area between two adjacent photovoltaic cells in the second direction, and the second edge refers to the portion of the surface of the body near the end of the body in the second direction; and / or, In the second direction, the width of the second hydrophilic structure ranges from 3cm to 5cm; and / or, The second hydrophilic structure includes a third film layer formed on the surface of the body, the material of which includes one of SiO2, ZnS, TiO2, ZrO2, Al2O3 and MgF2.

9. A photovoltaic module, characterized in that, It includes a photovoltaic laminate and a frame covering the circumferential edge of the photovoltaic laminate, wherein the photovoltaic laminate includes the photovoltaic glass according to any one of claims 1-8.

10. The photovoltaic module according to claim 9, characterized in that, At least one of the first edges is exposed, and the portion of the frame near the at least one first edge is flush with the first edge.

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