Photovoltaic panels and photovoltaic systems

Abstract

The embodiments of the present application provide a photovoltaic module and a photovoltaic system. The photovoltaic module includes glass, at least one side of which is a composite surface including an embossed area and a flat area; the embossed area is an area with an uneven surface; the flat area is an area with a flat and smooth surface. The embodiments of the present application use the above-mentioned glass with a composite surface in the photovoltaic module, and different types of areas in the composite surface can be adapted to different types of adhesive films in the photovoltaic module, thereby improving the bonding performance between the glass and the adhesive film in the photovoltaic module, and improving the stability and product quality of the photovoltaic module.

Description

Technical Field

[0001] The present application relates to the technical field of solar cells, and in particular to a glass, a photovoltaic module and a photovoltaic system. Background Art

[0002] In photovoltaic cell modules, glass and adhesive film are often used to encapsulate the battery cells, and the adhesive film is used to bond the battery cells and the glass.

[0003] The bonding between the glass and the film is not strong, which is prone to debonding. In addition, the sealing is poor, which allows water vapor to penetrate easily, affecting the quality and service life of photovoltaic modules.

[0004] It should be noted that the above content is not necessarily prior art, nor is it intended to limit the scope of patent protection of this application. Utility Model Content

[0005] The embodiments of the present application provide a glass, a photovoltaic module and a photovoltaic system to solve or alleviate one or more of the technical problems mentioned above.

[0006] A first aspect of an embodiment of the present application provides a glass, at least one side of which is a composite surface including an embossed area and a flat area; the embossed area is an area with an uneven surface; and the flat area is an area with a flat and smooth surface.

[0007] A second aspect of an embodiment of the present application provides a photovoltaic assembly, including:

[0008] Glass, which is the glass of the above embodiment;

[0009] A battery layer, the battery layer includes a plurality of battery cells;

[0010] Wherein, at least one side of the glass facing the battery layer is a composite surface.

[0011] Optionally, the photovoltaic module further comprises a water-blocking adhesive film, and the water-blocking adhesive film is arranged to surround the side of the battery layer.

[0012] Optionally, the composite surface includes a first area and a second area, the first area is arranged to surround the second area, and the size of the first area is adapted to the size of the water-blocking film; the second area is one of an embossed area and a flat plate area, and the first area is one of the embossed area and the flat plate area that is different from the second area.

[0013] Optionally, the ring width of the first region is greater than the ring width of the water-blocking adhesive film, and the ring width of the first region differs from the ring width of the water-blocking adhesive film by 1-3 mm.

[0014] Optionally, the battery unit includes multiple battery cells, and the composite surface includes multiple third regions arranged in a matrix and fourth regions outside the multiple third regions; one third region corresponds to one battery cell; the third region is a flat region or an embossed region; the fourth region is one of the embossed regions and the flat region that is different from the third region.

[0015] Optionally, the distance between two adjacent third areas is 3-5 mm.

[0016] Optionally, the size of the third region is smaller than the size of the battery cell, and the difference between the size of the third region and the size of the battery cell is 0.5-1.2 mm.

[0017] Optionally, the composite surface includes multiple matrix areas, the matrix area includes multiple fifth areas arranged in a matrix and sixth areas outside the multiple fifth areas, one fifth area corresponds to one battery cell setting; the fifth area is a flat area or an embossed area; the sixth area is one of the embossed areas and the flat area that is different from the fifth area; one matrix area corresponds to one battery cell; the fifth areas in adjacent matrix areas are the same type or different types in the flat area and the embossed area.

[0018] Optionally, the outer side of the matrix area is a sixth area.

[0019] A third aspect of an embodiment of the present application provides a photovoltaic system, comprising: a photovoltaic component as described in any one of the above items.

[0020] The above technical solution adopted in the embodiment of the present application may have the following advantages:

[0021] By using glass with at least one surface that is a composite surface including an embossed area and a flat area in a photovoltaic module, the compatibility of the glass with different adhesive films in the photovoltaic module can be improved, thereby improving the bonding performance between the glass and the adhesive film in the photovoltaic module, and improving the stability and product quality of the photovoltaic module. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in the present application and should not be regarded as limiting the scope of the present application.

[0023] Figure 1 is a schematic diagram of the structure of a glass in a photovoltaic module in an embodiment of the present application;

[0024] Figure 2 yes Figure 1 A schematic diagram of the local enlarged structure of the A position in the middle;

[0025] Figure 3is another structural schematic diagram of a glass in a photovoltaic module according to an embodiment of the present application;

[0026] Figure 4 yes Figure 3 A schematic diagram of the local enlarged structure of position B in the middle;

[0027] Figure 5 is a schematic diagram of the structure of another glass in the photovoltaic module of the embodiment of the present application;

[0028] Figure 6 yes Figure 5 A schematic diagram of the local enlarged structure of the C position in the middle;

[0029] Figure 7 is another structural schematic diagram of another type of glass in the photovoltaic module of the embodiment of the present application;

[0030] Figure 8 yes Figure 7 A schematic diagram of the local enlarged structure at position D in the middle;

[0031] Fig. 9 is a schematic diagram of the structure of another glass in the photovoltaic module of the embodiment of the present application;

[0032] Fig.10 This is another structural schematic diagram of yet another type of glass in the photovoltaic module of the embodiment of the present application. DETAILED DESCRIPTION

[0033] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings. In the accompanying drawings, for clarity, the sizes of layers, regions, elements and their relative sizes may be exaggerated. Wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limitations on the present application. It should be noted that, in the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0034] It should be understood that when an element or layer is referred to as "on ...", "adjacent to ...", "connected to" or "coupled to" other elements or layers, it can be directly on, adjacent to, connected to or coupled to other elements or layers, or there can be intervening elements or layers. On the contrary, when an element is referred to as "directly on ...", "directly adjacent to ...", "directly connected to" or "directly coupled to" other elements or layers, there is no intervening element or layer. It should be understood that although the terms first, second, third, etc. can be used to describe various elements, components, regions, layers and / or parts, these elements, components, regions, layers and / or parts should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or part from another element, component, region, layer or part. Therefore, without departing from the teachings of the present disclosure, the first element, component, region, layer or part discussed below can be represented as the second element, component, region, layer or part. And when the second element, component, region, layer or part is discussed, it does not mean that the present disclosure necessarily has the first element, component, region, layer or part.

[0035] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0036] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0037] Hereinafter, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. It should be noted that these exemplary embodiments can be implemented in many different forms and should not be construed as being limited to the embodiments described herein.

[0038] The embodiment of the present application provides a glass, Figures 1 to 10 Schematic diagrams of various structures of the glass provided in the embodiments of the present application are shown. Figures 1 to 10 As shown, at least one side of the glass is a composite surface including an embossed area and a flat area. That is, the composite surface refers to a glass surface on which both an embossed area and a flat area are arranged.

[0039] The embossed area is the area with an uneven surface; the flat area is the area with a flat and smooth surface.

[0040] The embossed area may refer to a surface with a concave-convex shape in the form of a pattern. The depth, width and shape of the pattern may be different. The depth, width and shape of the pattern may be adjusted according to the specific application scenario to provide different optical effects or bonding effects. The shape of the pattern includes but is not limited to mesh embossing, matrix embossing, etc.

[0041] The flat plate area may be made by a float process; the embossed area may be made by a calendaring process.

[0042] When the embossed area contacts with the adhesive film with better fluidity, the adhesive film with better fluidity can more easily fill the concave and convex surfaces of the embossed area, thereby forming more contact surfaces, further achieving firm contact, and increasing the stability of the overall structure.

[0043] When the flat plate area contacts with a film with slightly poor fluidity, the gap between the contact surface of the film and the flat plate area is smaller, which can improve the tightness and stability between the contact surfaces and reduce the entry of air and impurities.

[0044] In the embodiment of the present application, at least one side of the glass is configured as a composite surface including an embossed area and a flat area, so that different types of areas in the composite surface can be adapted to different types of adhesive films in the photovoltaic module, thereby improving the bonding performance between the glass and the adhesive film in the photovoltaic module, and improving the stability and product quality of the photovoltaic module.

[0045] The various glasses with different structures provided in the embodiments of the present application are applied to photovoltaic modules, and suitable glasses are selected according to the different structures of the photovoltaic modules.

[0046] The present application provides a photovoltaic module, which includes glass and a battery layer. The glass is any of the above embodiments, such as Figures 1 to 10 The various glasses shown. The battery layer includes a plurality of battery cells; wherein at least one side of the glass facing the battery layer is a composite surface.

[0047] The side of the glass facing away from the battery layer is a composite surface, or a pure flat surface, or a pure embossed surface.

[0048] In one example, the plurality of battery cells in the battery layer may be one or more photovoltaic cells such as perovskite solar cells, crystalline silicon solar cells, or HJT (heterojunction) cells.

[0049] The glass used in photovoltaic modules can be used with various types of adhesive films to laminate and encapsulate the battery layer to prevent the battery layer from being damaged by external factors (such as water vapor, impact, etc.). Among them, the glass in photovoltaic modules can be divided into front glass and back glass. The front glass is located on the side of the photovoltaic module facing the sunlight, and can efficiently transmit sunlight to the battery layer; the back glass is located on the side of the photovoltaic module facing away from the sunlight, and can provide support and protection for the photovoltaic module.

[0050] In one example, at least one side of the glass includes both an embossed area and a flat area, and the glass can be used as a front glass or a back glass of a photovoltaic module.

[0051] In one example, the various types of adhesive films in the photovoltaic module may include a gap reflective film, a laminated film, and a water-blocking film. The gap reflective film is used to reflect the light that passes through the battery layer to the front glass, and then reflect it back into the battery to improve the light utilization efficiency; the laminated film can be stacked on the opposite sides of the battery layer and bonded to the front glass and the back glass respectively to protect the internal battery; the water-blocking film can be set around the battery layer to prevent water vapor from entering the battery layer from the side, and the water-blocking film may include butyl rubber.

[0052] Different types of adhesive films used in photovoltaic modules have different adhesion when in contact with different glass surfaces.

[0053] In one example, when the water-blocking film butyl rubber or the gap reflective film contacts the embossed area of ​​the glass, the surface of the embossed area has a texture and an undulating structure, which will cause the butyl rubber or the gap reflective film to be unable to completely fill the tiny depressions and protrusions on the glass. As a result, the contact area between the butyl rubber or the gap reflective film and the glass will be reduced, reducing the bonding strength. Insufficient bonding strength of butyl rubber may allow water vapor to enter the battery and reduce the performance of the battery. Insufficient bonding strength of the gap reflective film will cause the gap reflective film to fall off or deform, and it will not be able to fully unfold, and the light entering the battery cannot be well reflected back to the front glass. That is, the water-blocking film butyl rubber and the gap reflective film are more suitable for contact with the flat area of ​​the glass.

[0054] Since the laminated adhesive film is thicker than the interstitial reflective film, the laminated adhesive film can better fill the concave-convex structure of the embossed area of ​​the glass, thereby forming a larger contact area with the glass and improving the bonding force with the glass. That is, the laminated adhesive film is more suitable for contact with the embossed area of ​​the glass.

[0055] Therefore, in photovoltaic modules, different types of adhesive films can be in contact with the glass surface to which they are adapted, thereby further improving the bonding strength between the adhesive film and the glass and enhancing the performance of the photovoltaic module.

[0056] In this embodiment, glass having at least one composite surface of an embossed area and a flat area is used in a photovoltaic module, so that different types of glass surfaces can be adapted according to different types of adhesive films in the photovoltaic module, which can enhance the adhesion between the adhesive film and the glass, thereby enhancing the overall stability of the photovoltaic module.

[0057] In an optional embodiment, the photovoltaic module further includes a water-blocking adhesive film, and the water-blocking adhesive film is arranged to surround the side of the battery layer.

[0058] In one example, the water-blocking film may be wrapped around the side of the battery layer to prevent external water vapor from entering the battery layer. The material of the water-blocking film may include butyl rubber or silica gel and other materials with good waterproof properties.

[0059] In one example, the water-blocking film can be attached to the side of the battery layer. After lamination, the water-blocking film is tightly bonded to the side of the battery layer and the front / back glass to form a complete packaging structure. By setting the water-blocking film to surround the side of the battery layer, the influence of external factors (such as water vapor, corrosive materials, etc.) on the inside of the battery can be reduced, thereby better protecting the inside of the battery layer.

[0060] In an optional embodiment, the composite surface includes a first area and a second area, the first area is arranged to surround the second area, and the size of the first area is adapted to the size of the water-blocking film; the second area is one of an embossed area and a flat plate area, and the first area is one of the embossed area and the flat plate area that is different from the second area.

[0061] The second area may be in a rectangular, circular or other shape, and the first area surrounds the second area and matches the shape of the second area.

[0062] The size of the first area is matched with the size of the water-blocking film, so that the first area can be a glass surface matched with the water-blocking film. Whether the first area is an embossed area or a flat area can be determined according to the characteristics of the water-blocking film.

[0063] In one example, the size of the first region may be slightly larger than that of the water-blocking film, for example, the width of the first region may be slightly wider than that of the water-blocking film, so that during the lamination process, the water-blocking film can be completely in contact with the first region to achieve good bonding.

[0064] In one example, if Figure 1 to Figure 2As shown, the second area 200 is in a rectangular shape, and the first area 100 surrounds the second area 200 to form a rectangular ring. In the figure, the first area 100 is a flat area, and the second area 200 is an embossed area.

[0065] Specifically, the flat plate area can be bonded to a water-blocking film, wherein the water-blocking film can be a highly water-blocking adhesive such as butyl rubber to prevent water vapor from entering the battery layer. Since the molecular weight of the highly water-blocking adhesive of butyl rubber is relatively high, its fluidity is relatively poor. Therefore, butyl rubber may not be able to be well filled into the depression of the embossed area, and setting the first area 100 as a flat plate area can make the water-blocking film bonded to the first area 100 better, thereby improving the bonding force of the water-blocking film. The second area 200 can be bonded to a laminated film for bonding the surface of the battery layer, and the second area 200 is surrounded by the first area 100, so that the battery layer is wrapped by the water-blocking film. The embossed area on the second area 200 contacts the laminated film of the battery layer. On the one hand, the laminated film can fill the depression of the embossed area, and on the other hand, contact with the concave and convex surface of the embossed area can increase the contact surface between the laminated film and the glass, thereby improving the bonding force between the laminated film and the glass.

[0066] In one example, if Figure 3-4 As shown, the first area 100 is an embossed area, and the second area 200 is a flat area.

[0067] Specifically, the second region 200 is a flat region, and the material of the water-blocking adhesive film can be other adhesives with relatively good fluidity. With relatively good fluidity, it is easy to combine with the concave and convex surface of the embossed region, and has better adhesion to the glass. For example, the adhesive with relatively good fluidity can be acrylic adhesive or hot melt adhesive, etc., which can be used to surround and protect the battery layer on the second region 200.

[0068] In this embodiment, by setting local embossed areas and local flat areas on the glass surface, the most suitable glass contact surface can be found locally on the glass for different adhesive films in the photovoltaic module, thereby improving the adhesion between the corresponding adhesive film and the glass, thereby improving the overall stability of the photovoltaic cell.

[0069] In an optional embodiment, the ring width of the first region 100 is greater than the ring width of the water-blocking film, and the ring width of the first region 100 and the ring width of the water-blocking film may differ by 1-3 mm.

[0070] The first region 100 surrounds the second region 200. The ring width of the first region 100 may refer to the distance between the inner edge and the outer edge of the first region 100, or may refer to the distance between the outer edge of the first region 100 and the outer edge of the second region 200. The ring width of the water-blocking film refers to the distance between the outer edge and the inner edge of the water-blocking film surrounding the battery layer.

[0071] For example, the difference between the ring width of the first region 100 and the ring width of the water-blocking film may be 1 mm, 2 mm or 3 mm.

[0072] The water-blocking film is under stress during lamination packaging, which may cause the water-blocking film to expand or deform outward, and may slightly increase the ring width of the water-blocking film.

[0073] Based on this, in this embodiment, by setting the ring width of the first area 100 to be larger than the ring width of the water-blocking film, the water-blocking film can be better accommodated when the ring width of the water-blocking film is increased.

[0074] In an optional embodiment, the battery unit includes multiple battery cells, and the composite surface includes multiple third regions 300 arranged in a matrix and a fourth region 400 outside the multiple third regions 300; one third region 300 corresponds to one battery cell arrangement; the third region 300 is a flat region or an embossed region; the fourth region 400 is one of the embossed regions and the flat region that is different from the third region 300.

[0075] The fourth region 400 may refer to a gap region between adjacent third regions 300 in a plurality of matrices of third regions 300, and the surface of the fourth region 400 is different from the surface of the third region 300. When the third region 300 is a planar region, the fourth region 400 is an embossed region. Conversely, when the third region 300 is an embossed region, the fourth region 400 is a planar region.

[0076] like Figure 5-6 As shown in FIG. 1 , the third region 300 of the plurality of matrix arrangements is an embossed region, and the fourth region 400 is a flat region. Figure 7-Figure 8 As shown, the third area 300 of the plurality of matrix arrangements is a plane area, and the fourth area 400 is an embossed area.

[0077] In an optional embodiment, the distance between two adjacent third regions 300 is 3-5 mm, that is, the width of the fourth region is 3-5 mm. The width may be a narrower side. For example, the distance between two adjacent third regions 300 may be 3 mm, 4 mm or 5 mm.

[0078] In the photovoltaic module, multiple cells are serially welded, and there is a gap between adjacent cells. Accordingly, there is a gap between adjacent third regions 300, and the gap region can correspond to the gap between the cells. The gap region is the fourth region 400, and the glass surface of the fourth region 400 can be set to correspond to the gap between the cells. In addition, the gap region between multiple third regions 300 uses a glass surface different from that of the third region 300, which can facilitate the extension of the glass manufacturing process and improve the stability of the glass structure.

[0079] In one example, a gap reflective film may be stacked corresponding to the fourth region 400 .

[0080] In an optional embodiment, the size of the third region 300 is smaller than the size of the battery cell, and the difference between the size of the third region 300 and the size of the battery cell is 0.5-1.2 mm. For example, the difference between the size of the third region 300 and the size of the battery cell may be 0.5 mm, 0.8 mm, 1 mm or 1.2 mm.

[0081] In this embodiment, the third region 300 is in contact and bonded with the laminated film of the battery cell. The third region 300 is tightly bonded to the laminated film, so that the surface of the protective battery cell is sealed and impermeable to water vapor. During the lamination process, the laminated film deforms and stretches. Therefore, the size of the third region 300 is smaller than the size of the battery cell to avoid the laminated film being squeezed into the gap area. A gap reflective film can be attached to the gap area to avoid the laminated film occupying the space of the gap reflective film.

[0082] In an optional embodiment, the composite surface includes a plurality of matrix areas 800, the matrix area 800 includes a plurality of fifth areas 500 arranged in a matrix and a sixth area 600 outside the plurality of fifth areas 500, one fifth area 500 corresponds to one battery cell setting; the fifth area 500 is a flat area or an embossed area; the sixth area 600 is one of the embossed areas and the flat area that is different from the fifth area 500; one matrix area 800 corresponds to one battery cell; the fifth areas 500 in adjacent matrix areas 800 are the same type or different types in the flat area and the embossed area, respectively.

[0083] In one example, the fifth regions 500 in the adjacent matrix regions 800 are different species in the flat region and the embossed region, for example Fig. 9 As shown, the first matrix area 800 has a plurality of fifth areas 500 arranged in a matrix, and the fifth area 500 is a flat area; in the second matrix area 800 adjacent to the first matrix area 800, the fifth areas 500 arranged in a matrix are embossed areas. The glass with this structure can easily distinguish multiple battery cells, and then select a suitable adhesive film according to the glass structure.

[0084] In one example, the adhesive films used in multiple battery cells in a photovoltaic module are the same, and the fifth area 500 in the adjacent matrix area 800 is the same type as that in the flat area and the embossed area, so that the adhesive film corresponding to each area can be selected to be bonded to the most suitable glass surface. Fig.10 As shown, the fifth regions 500 in the adjacent matrix regions 800 are all flat panel regions.

[0085] In some other examples, the fifth regions 500 in adjacent matrix regions 800 may also all be embossed regions.

[0086] In an optional embodiment, the outer side of the matrix area is the sixth area 600, which facilitates the adjacent matrix area 800 to process different types of glass surfaces.

[0087] The embodiment of the present application may also provide a photovoltaic system, including the glass in the above embodiment, or the photovoltaic module in any of the above embodiments. The photovoltaic system may also include a plurality of photovoltaic modules in any of the above embodiments. The advantages possessed by the above glass or photovoltaic module are also possessed by the photovoltaic system, which will not be described in detail here.

[0088] The application field of photovoltaic system is wide, not only limited to photovoltaic power stations, such as ground power stations, rooftop power stations and water power stations, but also includes various equipment and devices that use solar energy to generate electricity, such as user solar power supplies, solar street lights, solar cars and solar buildings. Of course, it is understandable that the application scenarios of photovoltaic systems are not limited to this, that is to say, photovoltaic systems can be used in all fields that require solar energy to generate electricity. Taking the photovoltaic power generation system network as an example, the photovoltaic system may include a photovoltaic array, a junction box and an inverter. The photovoltaic array may be an array combination of multiple photovoltaic components. For example, multiple photovoltaic components can form multiple photovoltaic arrays. The photovoltaic array is connected to the junction box. The junction box can converge the current generated by the photovoltaic array. The converged current flows through the inverter and is converted into the alternating current required by the mains power grid. After that, it is connected to the mains network to realize solar power supply.

[0089] It should be noted that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. The orientation words "inside" and "outside" refer to the inside and outside relative to the outline of each component itself. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Therefore, the exemplary term "above..." can include both "above..." and "below..." orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used here are interpreted accordingly.

[0090] It should also be noted that "one embodiment", "another embodiment", "embodiment", etc. mentioned in this application refer to the specific features, structures or characteristics described in conjunction with the embodiment included in at least one embodiment generally described in this application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when describing a specific feature, structure or characteristic in conjunction with any embodiment, it is claimed that the realization of such feature, structure or characteristic in conjunction with other embodiments also falls within the scope of this application.

[0091] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0092] It should also be noted that the above are only preferred embodiments of the present application, and the patent protection scope of the present application is not limited thereto. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A photovoltaic module, characterized in that: include: Glass, wherein at least one side of the glass is a composite surface including an embossed area and a flat area; the embossed area is an area with an uneven surface; and the flat area is an area with a flat and smooth surface; A battery layer, the battery layer comprising a plurality of battery cells; Wherein, at least one side of the glass facing the battery layer is the composite surface; Wherein, the photovoltaic module further comprises a water-blocking film, and the water-blocking film is arranged to surround the side of the battery layer; The composite surface includes a first area and a second area, the first area surrounds the second area, and the size of the first area matches the size of the water-blocking film; the first area is the embossed area, and the second area is the flat area.

2. The photovoltaic module according to claim 1, characterized in that: The ring width of the first region is greater than the ring width of the water-blocking adhesive film, and the ring width of the first region differs from the ring width of the water-blocking adhesive film by 1-3 mm.

3. The photovoltaic module according to claim 1, characterized in that: The battery unit includes multiple battery cells, the composite surface includes multiple third areas arranged in a matrix and a fourth area outside the multiple third areas; one third area corresponds to one battery cell; the third area is the flat area or the embossed area; the fourth area is one of the embossed area and the flat area that is different from the third area.

4. The photovoltaic module according to claim 3, characterized in that: The distance between two adjacent third areas is 3-5 mm.

5. The photovoltaic module according to claim 3, characterized in that: The size of the third region is smaller than the size of the battery cell, and the difference between the size of the third region and the size of the battery cell is 0.5-1.2 mm.

6. The photovoltaic module according to claim 1, characterized in that: The composite surface includes a plurality of matrix areas, the matrix areas include a plurality of fifth areas arranged in a matrix and a sixth area outside the plurality of fifth areas, one fifth area corresponds to one battery cell setting; the fifth area is the flat plate area or the embossed area; the sixth area is one of the embossed areas and the flat plate area that is different from the fifth area; one matrix area corresponds to one battery cell; the fifth areas in adjacent matrix areas are respectively the same type or different types as the flat plate area and the embossed area.

7. The photovoltaic module according to claim 6, characterized in that: The outer side of the matrix area is the sixth area.

8. A photovoltaic system, characterized in that: The photovoltaic system comprises: a photovoltaic assembly as described in any one of claims 1 to 7.

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