Photovoltaic tile and photovoltaic tile assembly

Abstract

The utility model provides a photovoltaic tile and a photovoltaic tile assembly, and relates to the technical field of photovoltaic tiles, the photovoltaic tile comprises a tile body, the tile body is a photovoltaic panel, the tile body is provided with a light facing side and a backlight side which are opposite to each other, and the tile body is provided with a first side edge and a second side edge which are opposite to each other; the first side edge extends and is bent towards the backlight side to form a first curved surface structure; the second side edge extends and is bent towards the light-facing side to form a second curved surface structure; the junction box is arranged on the light-facing side of the second curved surface structure; the second curved surface structure of the photovoltaic tile is used for being in lap joint with the first curved surface structure of another photovoltaic tile, and an installation space is formed. The junction box is arranged in the installation space. According to the technical scheme of the utility model, the junction box is arranged on the light-facing side of the second curved surface structure, thereby facilitating the installation of cables, and reducing the installation difficulty. The junction box is arranged in the mounting space formed by lap joint, so that hiding of the junction box and the cable is facilitated, independent storage components are not needed, the assembly process is simplified, and the cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic tile technology, and more specifically, to a photovoltaic tile and a photovoltaic tile module. Background Technology

[0002] Building-integrated photovoltaics (BIPV) refers to integrating photovoltaic modules on or around a building, enabling it to function as both a building envelope and a power generator. It can directly replace traditional building components such as roofing sheets, tiles, windows, building facades, and awnings. It can also be designed to form composite building components that integrate power generation, protection, and decoration.

[0003] With the increasing popularity of building-integrated photovoltaics (BIPV) technology, photovoltaic tiles, which can replace traditional roof tiles, have emerged to better integrate with building surfaces. As a building material, photovoltaic tiles have both power generation and protection functions.

[0004] In photovoltaic tiles using related technologies, the junction box is typically located at the bottom of the photovoltaic panel and requires a separate storage unit to house the junction box's cables. This method is cumbersome to assemble and relatively expensive. Utility Model Content

[0005] To address or improve the technical problems of requiring separate installation of storage components, which involves cumbersome assembly processes and high costs, one objective of this utility model is to provide a photovoltaic tile.

[0006] Another objective of this invention is to provide a photovoltaic tile module having the aforementioned photovoltaic tiles.

[0007] To achieve the above objectives, the first aspect of this utility model provides a photovoltaic tile, comprising: a tile body, the tile body being a photovoltaic panel, the tile body having a light-facing side and a backlight side, and the tile body having a first side and a second side; the first side extending and bending towards the backlight side to form a first curved surface structure; the second side extending and bending towards the light-facing side to form a second curved surface structure; a junction box disposed on the light-facing side of the second curved surface structure; the second curved surface structure of the photovoltaic tile is used to overlap with the first curved surface structure of another photovoltaic tile to form an installation space; the junction box is disposed within the installation space.

[0008] In the technical solution defined by this utility model, firstly, the junction box is located on the light-facing side of the second curved surface structure, which is also the concave side of the second curved surface structure. This design, compared to placing the junction box on the back-light side of the photovoltaic tile, facilitates cable installation and reduces installation difficulty. Secondly, in two adjacent photovoltaic tiles, the second curved surface structure of one photovoltaic tile overlaps with the first curved surface structure of the other photovoltaic tile, forming an installation space; the junction box is located within this installation space. After the two adjacent photovoltaic tiles are installed, the junction box, located within the overlapping installation space, facilitates the concealment of the junction box and cables. This design eliminates the need for a separate cable storage component; the installation space can serve as a cable management channel. The elimination of the cable storage component simplifies the assembly process and reduces costs. Thirdly, both curved surface structures have arc-shaped cross-sections, forming a waterproof structure after overlapping, achieving 100% waterproofing and protecting the junction box and cables.

[0009] In some technical solutions, the tile body may optionally include: a tempered glass layer, one side of which is the light-facing side of the tile body; a power generation unit, one side of which is connected to the other side of the tempered glass layer; a back plate, one side of which is connected to the other side of the power generation unit, and the other side of which is the backlight-removing side of the tile body; and a junction box located on the light-facing side of the tempered glass layer, and the junction box is electrically connected to the power generation unit.

[0010] In this technical solution, the tile body adopts a multi-layer structure from the light-facing side to the backlight side. The tempered glass layer, as the outermost layer of the tile body, has good impact resistance. The back sheet, as the innermost layer of the tile body, has good weather resistance, prevents ultraviolet rays from causing the back sheet to become brittle, and at the same time isolates moisture from corroding the power generation unit.

[0011] By placing the junction box on the light-facing side of the tempered glass layer, that is, on the side of the tempered glass layer away from the power generation unit, it is easier to install cables and reduces the difficulty of installation.

[0012] In some technical solutions, the tempered glass layer is optionally provided with a reserved hole for communication with the installation space; the cables of the junction box pass through the reserved hole and are electrically connected to the power generation unit.

[0013] In this technical solution, the tempered glass layer is a rigid structure. By setting pre-drilled holes in the tempered glass layer, the cable path can be optimized, making it easier for workers to install the cables and achieve electrical connection between the junction box and the power generation unit. Compared to winding the cables around the tempered glass layer, this design method allows for cable concealment, shortens cable length, and reduces installation difficulty.

[0014] In some technical solutions, the tile body may optionally include: a first encapsulating film disposed between the tempered glass layer and the power generation unit, the first encapsulating film being used to connect the tempered glass layer and the power generation unit; and / or a second encapsulating film disposed between the power generation unit and the back panel, the second encapsulating film being used to connect the power generation unit and the back panel.

[0015] In this technical solution, the first encapsulating film has a layered structure and is used to seamlessly bond the tempered glass layer and the power generation unit, so that the tempered glass layer and the power generation unit are firmly connected and form an integral structure. The first encapsulating film has good chemical stability and weather resistance.

[0016] The second encapsulating film has a layered structure and is used for seamless bonding of the generator unit and the backplane, ensuring a firm connection and forming a unified structure. The second encapsulating film exhibits good chemical stability and weather resistance.

[0017] In some technical solutions, the thickness of the tempered glass layer can optionally be 3mm to 6mm.

[0018] In this technical solution, by limiting the thickness range of the tempered glass layer, firstly, it avoids excessive thickness, which helps ensure the structural strength of the tempered glass layer so that it can withstand greater pressure or impact to resist snow and hail, and also ensures the weather resistance of the tempered glass layer to resist acid rain and other erosion; secondly, it avoids excessive thickness, which helps ensure that the tempered glass layer has high light transmittance, and also avoids material waste and reduces costs.

[0019] In some technical solutions, the junction box may optionally include: a positive terminal box and a negative terminal box, wherein the positive terminal box is used to connect to the positive terminal of the power generation unit; and the negative terminal box is used to connect to the negative terminal of the power generation unit; or the junction box may be a single-unit junction box, wherein the single-unit junction box includes a positive cable and a negative cable, wherein the positive cable is used to connect to the positive terminal of the power generation unit; and the negative cable is used to connect to the negative terminal of the power generation unit.

[0020] In this technical solution, by adopting a split-type junction box structure, electromagnetic interference between the positive and negative terminals can be avoided, reducing the risk of accidental short circuits and improving safety performance.

[0021] The junction box adopts a single-unit design with cables exiting from both sides, integrating the positive and negative cables into the same housing. This helps reduce the space occupied by the junction box, simplify the wiring process, and improve construction efficiency.

[0022] In some technical solutions, the stiffness of the tempered glass layer may optionally be greater than that of the back plate.

[0023] In this technical solution, the tempered glass layer is a rigid structure, while the back panel is a flexible structure. During installation, the back panel is bent to fit the shape of the tempered glass layer, creating curved surfaces on both sides. This design reduces the difficulty of assembling the different layers of the tile and improves assembly efficiency.

[0024] In some technical solutions, optionally, the radius of curvature of the first curved surface structure is in the range of 110mm to 400mm; and / or the radius of curvature of the second curved surface structure is in the range of 110mm to 400mm.

[0025] In this technical solution, by limiting the range of the curvature radius of the curved structure, firstly, it avoids the curvature radius being too large, which would affect the structural strength of the tile body and ensure that the photovoltaic tile can withstand greater pressure or impact after installation; secondly, it avoids the curvature radius being too small, ensuring that two adjacent photovoltaic tiles form a sufficiently large installation space after overlapping, so as to hide the junction box and cables.

[0026] In some technical solutions, optionally, the height of the junction box is 1 to 2 times the surface height of the first curved structure; and / or the height of the junction box is 1 to 2 times the surface height of the second curved structure.

[0027] In this technical solution, by limiting the proportional relationship between the height of the junction box and the height of the curved surface structure, firstly, the height of the second curved surface structure is avoided from being too large, ensuring that the installation space formed after the two adjacent photovoltaic tiles are overlapped is not too large, effectively avoiding waste of space and materials; secondly, the height of the second curved surface structure is avoided from being too small, ensuring that the installation space formed after the two adjacent photovoltaic tiles are overlapped is large enough to hide the junction box and cables.

[0028] The second aspect of this utility model provides a photovoltaic tile assembly, comprising: at least two photovoltaic tiles according to any of the above technical solutions, wherein in any two adjacent photovoltaic tiles, the second curved surface structure of one photovoltaic tile overlaps with the first curved surface structure of the other photovoltaic tile to form an installation space.

[0029] Since the photovoltaic tile module includes any of the photovoltaic tiles mentioned in the first aspect above, it has the beneficial effects of any of the above technical solutions, which will not be elaborated here.

[0030] Additional aspects and advantages of the present invention will become apparent in the following description or may be learned by practice of the present invention. Attached Figure Description

[0031] Figure 1 A schematic diagram of a photovoltaic tile according to an embodiment of the present invention is shown;

[0032] Figure 2 A schematic diagram of a photovoltaic tile according to another embodiment of the present invention is shown;

[0033] Figure 3 An exploded view of a photovoltaic tile according to an embodiment of the present invention is shown;

[0034] Figure 4 A schematic diagram of a tempered glass layer according to an embodiment of the present invention is shown;

[0035] Figure 5 An exploded view of a photovoltaic tile according to another embodiment of the present invention is shown;

[0036] Figure 6 A schematic diagram of a tempered glass layer according to another embodiment of the present invention is shown;

[0037] Figure 7 A schematic diagram of a tile body according to an embodiment of the present invention is shown;

[0038] Figure 8 A schematic diagram of a photovoltaic tile module according to an embodiment of the present invention is shown;

[0039] Figure 9 A schematic diagram of a photovoltaic tile according to another embodiment of the present invention is shown;

[0040] Figure 10 A schematic diagram of a photovoltaic tile module according to another embodiment of the present invention is shown;

[0041] Figure 11 A schematic diagram of a photovoltaic tile module according to another embodiment of the present invention is shown.

[0042] in, Figures 1 to 11 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0043] 100: Photovoltaic tile; 110: Tile body; 111: Photovoltaic panel; 112: Light-facing side; 113: Backlight side; 114: First side; 115: Second side; 116: First curved surface structure; 117: Second curved surface structure; 1171: Mounting hole; 121: Tempered glass layer; 1211: Pre-drilled hole; 122: First encapsulating film; 123: Power generation unit; 124: Second encapsulating film; 125: Back panel; 131: Junction box; 1311: Positive terminal box; 1312: Negative terminal box; 132: Cable; 1321: Positive cable; 1322: Negative cable; 200: Photovoltaic tile module; 210: Installation space; T1: Thickness of tempered glass layer; R1: Radius of curvature of the first curved surface structure; R2: Radius of curvature of the second curved surface structure; H1: Surface height of the first curved surface structure; H2: Surface height of the second curved surface structure; H3: Height of the junction box. Detailed Implementation

[0044] To better understand the above-mentioned objectives, features, and advantages of the embodiments of this utility model, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments of this utility model and the features thereof can be combined with each other.

[0045] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, embodiments of the present invention may be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0046] The following reference Figures 1 to 11 This invention describes photovoltaic tiles and photovoltaic tile modules provided according to some embodiments of the present invention.

[0047] In one embodiment of the present invention, the photovoltaic tile 100 is used to replace traditional tiles and is typically installed on building roofs. The photovoltaic tile 100, as a building material, combines power generation, protection, and waterproofing functions.

[0048] It should be noted that the photovoltaic tile 100 has a light-facing side 112 and a back-lighting side 113. After the photovoltaic tile 100 is installed on the building roof, the light-facing side 112 of the photovoltaic tile 100 is the side facing away from the building roof and is also the side that directly receives sunlight; the back-lighting side 113 of the photovoltaic tile 100 is the side facing the building roof. At least a portion of the back-lighting side 113 of the photovoltaic tile 100 abuts against the building roof.

[0049] The photovoltaic tile 100 has an outer surface 112 on its light-facing side, which is the front side and the surface facing the sun; and an inner surface 113 on its back side, which is the back side and the mounting surface that fits the roof of the building.

[0050] like Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 9 As shown, the photovoltaic tile 100 includes a tile body 110 and a junction box 131. The tile body 110 is a photovoltaic panel 111, meaning it has a plate-like structure. The tile body 110 has a light-facing side 112 and a back-lighting side 113. The light-facing side 112 of the tile body 110 refers to the side that directly receives sunlight (the side facing the sun); the back-lighting side 113 of the tile body 110 refers to the side of the photovoltaic tile 100 that faces the building roof (the side away from the sun).

[0051] like Figure 2 and Figure 3 As shown, the tile body 110 has opposing first side 114 and second side 115.

[0052] The first side 114 extends and bends toward the backlight side 113 to form a first curved surface structure 116. The second side 115 extends and bends toward the light-facing side 112 to form a second curved surface structure 117. The extension direction of the first curved surface structure 116 is opposite to the extension direction of the second curved surface structure 117, and the bending direction of the first curved surface structure 116 is opposite to the bending direction of the second curved surface structure 117.

[0053] Optionally, the first curved surface structure 116 and the second curved surface structure 117 in the tile body 110 are curved tiles (curved photovoltaic panels); the portion of the tile body 110 between the first curved surface structure 116 and the second curved surface structure 117 is a flat tile (flat photovoltaic panel). The overall structure of the tile body 110 is approximately "S" shaped.

[0054] It should be noted that the cross-sectional shape of the first curved surface structure 116 is arc-shaped. The cross-sectional shape of the second curved surface structure 117 is arc-shaped.

[0055] Junction box 131 is located on the light-facing side 112 of the second curved surface structure 117. The light-facing side 112 of the second curved surface structure 117 is the concave side of the second curved surface structure 117. This design, compared to placing junction box 131 on the backlight side 113 of photovoltaic tile 100, facilitates the installation of cables 132 and helps reduce installation difficulty.

[0056] Optionally, the junction box 131 and the light-facing side 112 of the second curved surface structure 117 are fixedly connected by snap-fit, adhesive or other means.

[0057] In one specific embodiment, the junction box 131 is fixedly connected to the light-facing side 112 of the second curved surface structure 117 by adhesive bonding. For example, adhesive is applied to one side of the junction box 131 and bonded to the light-facing side 112 of the second curved surface structure 117; or, adhesive is applied to the light-facing side 112 of the second curved surface structure 117 and bonded to one side of the junction box 131. This connection method is easy to operate, allowing the junction box 131 to be installed at any position on the light-facing side 112 of the second curved surface structure 117 (by adhesive bonding) according to actual needs.

[0058] Optionally, the junction box 131 is detachably connected to the light-facing side 112 of the second curved surface structure 117, which facilitates the disassembly and assembly of the junction box 131 by the staff and is beneficial for maintenance or replacement.

[0059] like Figure 8 , Figure 10 and Figure 11 As shown, the second curved surface structure 117 of the photovoltaic tile 100 is used to overlap with the first curved surface structure 116 of another photovoltaic tile 100 to form an installation space 210. The junction box 131 is located within the installation space 210.

[0060] During the installation of two adjacent photovoltaic tiles 100, the second curved structure 117 of one photovoltaic tile 100 needs to be interlocked with the first curved structure 116 of the other photovoltaic tile 100, with the second curved structure 117 located below the first curved structure 116. Since the first curved structure 116 is formed by extending and bending from the first side 114 toward the backlight side 113, and the second curved structure 117 is formed by extending and bending from the second side 115 toward the light-facing side 112, the overlapping of the first curved structure 116 and the second curved structure 117 can form an installation space 210 for placing the junction box 131.

[0061] In the technical solution defined by this utility model, firstly, the junction box 131 is located on the light-facing side 112 of the second curved surface structure 117, where the light-facing side 112 is the concave side of the second curved surface structure 117. This design, compared to placing the junction box 131 on the backlight side 113 of the photovoltaic tile 100, facilitates the installation of the cable 132 and helps reduce installation difficulty. Secondly, in two adjacent photovoltaic tiles 100, the second curved surface structure 117 of one photovoltaic tile 100 overlaps with the first curved surface structure 116 of the other photovoltaic tile 100, forming an installation space 210; the junction box 131 is located within the installation space 210. After the two adjacent photovoltaic tiles 100 are installed, the junction box 131, located within the overlapping installation space 210, facilitates the concealment of the junction box 131 and the cable 132. This design eliminates the need for a separate cable management component for cable 132, allowing the installation space 210 to function as a cable tray. The elimination of the cable management component simplifies the assembly process and reduces costs. Furthermore, the two curved structures have arc-shaped cross-sections, which, when joined, form a waterproof structure, achieving 100% waterproofing and thus protecting the junction box 131 and the cable 132.

[0062] It should be noted that, in the first side 114 and the second side 115, one is the top side and the other is the bottom side. Alternatively, in the first side 114 and the second side 115, one is the left side and the other is the right side. The first side 114 and the second side 115 can be flexibly configured according to actual needs.

[0063] Taking the first side 114 as the bottom side and the second side 115 as the top side as an example:

[0064] When installing the photovoltaic tile 100, the tile body 110 has an upper side and a lower side that are arranged opposite each other along the slope direction of the building roof. The upper side extends and bends towards the light-facing side 112 to form a second curved surface structure 117. The lower side extends and bends towards the shaded side 113 to form a first curved surface structure 116. When installing two adjacent photovoltaic tiles 100, the first curved surface structure 116 of one photovoltaic tile 100 is fastened to the second curved surface structure 117 of the other photovoltaic tile 100. In the same photovoltaic tile 100, the second curved surface structure 117 is located above the first curved surface structure 116.

[0065] After multiple photovoltaic tiles 100 are installed, rainwater can pass through the second curved structure 117 and the first curved structure 116 of one photovoltaic tile 100, and then flow to the second curved structure 117 and the first curved structure 116 of another photovoltaic tile 100. This design effectively prevents rainwater from entering the installation space 210, thereby protecting the junction box 131 and the cable 132.

[0066] Taking the first side 114 as the right side and the second side 115 as the left side as an example:

[0067] The photovoltaic tile 100 has opposing left and right sides. The left side extends and bends towards the light-facing side 112 to form a second curved surface structure 117. The right side extends and bends towards the backlight side 113 to form a first curved surface structure 116. When two adjacent photovoltaic tiles 100 are installed, the first curved surface structure 116 of one photovoltaic tile 100 is fastened to the second curved surface structure 117 of the other photovoltaic tile 100, forming an installation space 210 for placing a junction box 131.

[0068] In some embodiments, optionally, such as Figure 3 and Figure 5 As shown, the photovoltaic tile 110 includes a tempered glass layer 121, a power generation unit 123, and a back panel 125. One side of the tempered glass layer 121 is the light-facing side 112 of the tile 110. The side of the tempered glass layer 121 facing away from the power generation unit 123 is the front side (sunlight-facing surface) of the photovoltaic tile 100.

[0069] The tempered glass layer 121 has sufficient structural strength to largely protect other structures of the tile body 110 (such as the power generation unit 123 and the back panel 125). In addition, the tempered glass layer 121 has high light transmittance to ensure that light can pass through the tempered glass layer 121 and illuminate the power generation unit 123.

[0070] Optionally, such as Figure 4 As shown, the tempered glass layer 121 is bent on both sides to form curved glass, which is part of a curved structure (first curved structure 116 or second curved structure 117).

[0071] One side of the power generation unit 123 is connected to the other side of the tempered glass layer 121. Optionally, the power generation unit 123 includes multiple battery cells connected in parallel or in series, and the number of battery cells can be increased or decreased according to actual needs.

[0072] In one specific embodiment, the solar cell is a crystalline silicon solar cell. Crystalline silicon solar cells use crystalline silicon as the substrate material and are divided into monocrystalline silicon and polycrystalline silicon. Monocrystalline silicon is made of single-crystal silicon with ordered atomic arrangement; polycrystalline silicon is composed of multiple small crystals with relatively disordered atomic arrangement.

[0073] Crystalline silicon solar cells are characterized by high photoelectric conversion efficiency, good stability, and long service life.

[0074] In one specific embodiment, the solar cell is a thin-film solar cell. The fabrication process of thin-film solar cells is simple, involving the deposition of photovoltaic materials onto a substrate to form a thin film using methods such as chemical vapor deposition and sputtering. This process has low energy consumption and a short production cycle.

[0075] Furthermore, thin-film solar cells exhibit superior low-light performance, outperforming crystalline silicon solar cells in low-light conditions such as early morning, evening, or cloudy days. Thin-film solar cells also have a low temperature coefficient, meaning their power output is less affected by temperature.

[0076] One side of the back panel 125 is connected to the other side of the power generation unit 123, and the other side of the back panel 125 is the backlight side 113 of the tile body 110. The side of the back panel 125 away from the power generation unit 123 is the back of the photovoltaic tile 100 (the mounting surface that fits the building roof).

[0077] Optionally, the backsheet 125 is a photovoltaic-grade backsheet with a multi-layer composite structure, including but not limited to a PET (Polyethylene Terephthalate) layer and a weather-resistant layer.

[0078] It should be noted that the PET layer has good chemical stability, is resistant to acid and alkali corrosion, and possesses a certain degree of toughness. The PET layer is mainly used to provide mechanical support. The weather-resistant layer is used to resist ultraviolet radiation and moisture penetration, which helps to improve the service life of the tile body 110.

[0079] In one specific embodiment, the weather-resistant layer is a PVDF (Polyvinylidene Fluoride) layer. This layer prevents ultraviolet radiation from causing embrittlement of the backsheet 125, while also isolating the cells from moisture corrosion.

[0080] Optionally, the back panel 125 is a flexible structure, and the stiffness of the back panel 125 is less than that of the tempered glass layer 121. Stiffness refers to the ability of an object or structure to resist deformation when subjected to force. The back panel 125 can be a planar plate structure. When installing the back panel 125, it is bent to fit the shape of the tempered glass layer 121 so that the two sides of the back panel 125 form a curved structure.

[0081] It should be noted that the curved structure of the back plate 125 is part of the curved structure of the tile body 110 (first curved structure 116 or second curved structure 117).

[0082] Junction box 131 is located on the light-facing side 112 of tempered glass layer 121, and junction box 131 is electrically connected to power generation unit 123.

[0083] It should be noted that the junction box 131 is located on the light-facing side 112 of the tempered glass layer 121, that is, on the side of the tempered glass layer 121 away from the power generation unit 123. This design, compared to placing the junction box 131 on the back-facing side 113 of the photovoltaic tile 100, facilitates the installation of the cable 132 and helps reduce installation difficulty. In addition, after two adjacent photovoltaic tiles 100 are overlapped, the resulting installation space 210 can hide the junction box 131 and the cable 132, eliminating the need for a separate cable storage component (such as a storage trough), which helps reduce installation costs and improves the aesthetics of the roof.

[0084] In the technical solution of this utility model, the tile body 110 adopts a multi-layer structure from the light-facing side 112 to the back-lighting side 113. The tempered glass layer 121, as the outermost layer of the tile body 110, has good impact resistance. The back plate 125, as the innermost layer of the tile body 110, has good weather resistance, prevents ultraviolet rays from causing the back plate 125 to become brittle, and at the same time isolates moisture from corroding the power generation unit 123.

[0085] It is important to emphasize that when installing two adjacent photovoltaic tiles 100, the second curved structure 117 of one photovoltaic tile 100 interlocks with the first curved structure 116 of the other photovoltaic tile 100. The tempered glass layer 121 of one photovoltaic tile 100 abuts against the back panel 125 of the other photovoltaic tile 100. After the two adjacent photovoltaic tiles 100 are overlapped, the overlapping curved portion is 100% waterproof, eliminating the need for a separate waterproof layer on the building roof.

[0086] Because the junction box 131 is located on the concave side of the second curved surface structure 117, that is, on the front side of the photovoltaic tile 100, it is more convenient for workers to install the junction box 131 and the cable 132. The photovoltaic tile 100 of this utility model has increased compatibility with building roofs, and can be installed on both purlin roofs and flat roofs, thus having a wider range of applications.

[0087] In some embodiments, optionally, such as Figure 4 As shown, the tempered glass layer 121 has a reserved hole 1211 for communicating with the installation space 210. The cable 132 of the junction box 131 passes through the reserved hole 1211 and is electrically connected to the power generation unit 123.

[0088] Optionally, the number of reserved holes 1211 can be one, two or more, and the number of reserved holes 1211 can be flexibly set according to actual needs.

[0089] In one specific embodiment, there is one reserved hole 1211. The positive cable 1321 of the junction box 131 passes through the reserved hole 1211 and is connected to the positive terminal of the power generation unit 123; the negative cable of the junction box 131 passes through the reserved hole 1211 and is connected to the negative terminal of the power generation unit 123.

[0090] In one specific embodiment, there are two reserved holes 1211. The positive cable of the junction box 131 passes through one of the reserved holes 1211 and is connected to the positive terminal of the power generation unit 123; the negative cable of the junction box 131 passes through the other reserved hole 1211 and is connected to the negative terminal of the power generation unit 123.

[0091] The tempered glass layer 121 is a rigid structure. By providing pre-drilled holes 1211 in the tempered glass layer 121, the path of the cable 132 can be optimized, making it easier for workers to install the cable 132 and achieve electrical connection between the junction box 131 and the power generation unit 123. Compared with winding the cable 132 around the tempered glass layer 121, this design method is more conducive to hiding the cable 132, shortening the length of the cable 132, and reducing the difficulty of installation.

[0092] In some embodiments, optionally, such as Figure 3 and Figure 5 As shown, the tile body 110 also includes a first encapsulating film 122. The first encapsulating film 122 is disposed between the tempered glass layer 121 and the power generation unit 123, and the first encapsulating film 122 is used to connect the tempered glass layer 121 and the power generation unit 123.

[0093] The first encapsulating film 122 has a layered structure and is used to seamlessly bond the tempered glass layer 121 and the power generation unit 123, so that the tempered glass layer 121 and the power generation unit 123 are firmly connected and form an integral structure. The first encapsulating film 122 has good chemical stability and weather resistance.

[0094] Optionally, the first encapsulating film 122 is any one of EVA (Ethylene-Vinyl Acetate Copolymer), POE (Polyolefin Elastomer), PVB (Polyvinyl Butyral), and silicone layer.

[0095] In one specific embodiment, the first encapsulating film 122 is an EVA layer. The EVA layer has good flexibility and impact resistance, and also has high light transmittance.

[0096] In one specific embodiment, the first encapsulating film 122 is a POE layer. Polyolefin elastomer is a thermoplastic elastomer copolymerized from ethylene and octene, etc. The POE layer has excellent toughness, aging resistance, and processability.

[0097] In one specific embodiment, the first encapsulating film 122 is a PVB layer. Polyvinyl butyral is a synthetic resin formed by the condensation reaction of polyvinyl alcohol and n-butyraldehyde under acid catalysis. The PVB layer has good light resistance, cold resistance, and water resistance, and also has high light transmittance.

[0098] In one specific embodiment, the first encapsulating film 122 is an silicone layer. The silicone layer has good adhesion, enabling a stable connection between the tempered glass layer 121 and the power generation unit 123. Furthermore, the silicone layer has high light transmittance and optical stability.

[0099] In some embodiments, optionally, such as Figure 3 and Figure 5 As shown, the tile body 110 also includes a second encapsulating film 124. The second encapsulating film 124 is disposed between the power generation unit 123 and the back plate 125, and the second encapsulating film 124 is used to connect the power generation unit 123 and the back plate 125.

[0100] The second encapsulating film 124 has a layered structure and is used to seamlessly bond the power generation unit 123 and the backplate 125, so that the power generation unit 123 and the backplate 125 are firmly connected and form an integral structure. The second encapsulating film 124 has good chemical stability and weather resistance.

[0101] Optionally, the second encapsulating film 124 is any one of an EVA (Ethylene-Vinyl Acetate Copolymer) layer, a POE (Polyolefin Elastomer) layer, a PVB (Polyvinyl Butyral) layer, and an organosilicon layer.

[0102] In one specific embodiment, the second encapsulating film 124 is an EVA layer. The EVA layer has good flexibility and impact resistance, and also has high light transmittance.

[0103] In one specific embodiment, the second encapsulating film 124 is a POE layer. Polyolefin elastomer is a thermoplastic elastomer copolymerized from ethylene and octene, etc. The POE layer has excellent toughness, aging resistance, and processability.

[0104] In one specific embodiment, the second encapsulating film 124 is a PVB layer. Polyvinyl butyral is a synthetic resin formed by the condensation reaction of polyvinyl alcohol and n-butyraldehyde under acid catalysis. The PVB layer has good light resistance, cold resistance, and water resistance, and also has high light transmittance.

[0105] In one specific embodiment, the second encapsulating film 124 is an silicone rubber layer. The silicone rubber layer has good adhesion, enabling a stable connection between the tempered glass layer 121 and the power generation unit 123. Furthermore, the silicone rubber layer has high light transmittance and optical stability.

[0106] In one specific embodiment, the tile body 110 adopts a multi-layer structure, and from the light-facing side 112 to the backlight side 113, it consists of a tempered glass layer 121, a first encapsulating film 122, a power generation unit 123, a second encapsulating film 124, and a backplate 125.

[0107] In some embodiments, optionally, such as Figure 6 As shown, the thickness T1 of the tempered glass layer 121 is 3 mm to 6 mm.

[0108] Optionally, the middle portion of the tempered glass layer 121 is flat glass or plate glass. The two sides of the tempered glass layer 121 are bent to form curved glass, which is part of a curved structure (first curved structure 116 or second curved structure 117).

[0109] The tempered glass layer 121 is the core structural layer of the tile body 110 on the light-facing side 112, and its thickness range affects the structural performance and optical performance of the tile body 110.

[0110] By limiting the thickness T1 range of the tempered glass layer 121, firstly, avoiding excessive thickness helps ensure the structural strength of the tempered glass layer 121, enabling it to withstand greater pressure or impact to resist snow and hail, and also ensures its weather resistance to resist acid rain and other erosion; secondly, avoiding excessive thickness helps ensure the tempered glass layer 121 has high light transmittance, and also avoids material waste and reduces costs.

[0111] In one specific embodiment, the thickness T1 of the tempered glass layer 121 is 3 mm.

[0112] In one specific embodiment, the thickness T1 of the tempered glass layer 121 is 4 mm.

[0113] In one specific embodiment, the thickness T1 of the tempered glass layer 121 is 5 mm.

[0114] In one specific embodiment, the thickness T1 of the tempered glass layer 121 is 6 mm.

[0115] In some embodiments, optionally, such as Figure 2 As shown, junction box 131 includes a positive terminal box 1311 and a negative terminal box 1312. The positive terminal box 1311 is used to connect to the positive terminal of the power generation unit 123; the negative terminal box 1312 is used to connect to the negative terminal of the power generation unit 123.

[0116] Junction box 131 is a split-type junction box, with positive terminal box 1311 and negative terminal box 1312 connecting to the positive and negative terminals of power generation unit 123, respectively. After two adjacent photovoltaic tiles 100 are assembled, the positive terminal box 1311 of one photovoltaic tile 100 is used to connect to the negative terminal box 1312 of the other photovoltaic tile 100; and the negative terminal box 1312 of one photovoltaic tile 100 is used to connect to the positive terminal box 1311 of the other photovoltaic tile 100, so as to realize the series connection between photovoltaic tiles 100.

[0117] By adopting a split-type junction box structure for junction box 131, electromagnetic interference between the positive and negative terminals can be avoided, reducing the risk of accidental short circuits and improving safety performance.

[0118] In some embodiments, optionally, such as Figure 1 As shown, junction box 131 is a single-unit junction box, which includes a positive cable 1321 and a negative cable 1322. The positive cable 1321 is used to connect to the positive terminal of the power generation unit 123; the negative cable 1322 is used to connect to the negative terminal of the power generation unit 123.

[0119] Junction box 131 is a single-unit junction box with cables coming out from both sides, integrating the positive and negative cables into the same housing, which helps to reduce the space occupied by junction box 131, simplify the wiring process, and improve construction efficiency.

[0120] Optionally, the first cable 132 has a first connecting end and a second connecting end; the second cable 132 has a third connecting end and a fourth connecting end.

[0121] In the same photovoltaic tile 100, the first connection end is used to connect to the positive electrode of the solar cell; the third connection end is used to connect to the negative electrode of the solar cell. After two adjacent photovoltaic tiles 100 are assembled, the second connection end of one photovoltaic tile 100 is used to connect to the fourth connection end of the other photovoltaic tile 100 to realize series connection between the photovoltaic tiles 100.

[0122] In some embodiments, the stiffness of the tempered glass layer 121 may be greater than the stiffness of the back plate 125. Stiffness refers to the ability of an object or structure to resist deformation when subjected to force.

[0123] In the tempered glass layer 121 and the back plate 125, the tempered glass layer 121 is a rigid structure, while the back plate 125 is a flexible structure. During installation, the back plate 125 is bent to fit the shape of the tempered glass layer 121, creating curved surfaces on both sides. This design reduces the difficulty of assembling the layers of the tile body 110 and improves assembly efficiency.

[0124] In some embodiments, optionally, such as Figure 7 As shown, the radius of curvature R1 of the first curved surface structure 116 ranges from 110 mm to 400 mm.

[0125] By limiting the range of the radius of curvature R1 of the first curved surface structure 116, firstly, the radius of curvature is too large, which affects the structural strength of the tile body 110 and ensures that the photovoltaic tile 100 can withstand greater pressure or impact after installation; secondly, the radius of curvature is too small, which ensures that two adjacent photovoltaic tiles 100 form a sufficiently large installation space 210 after overlapping, so as to hide the junction box 131 and the cable 132.

[0126] In one specific embodiment, the radius of curvature R1 of the first curved surface structure 116 is in the range of 110 mm.

[0127] In one specific embodiment, the radius of curvature R1 of the first curved surface structure 116 is in the range of 200 mm.

[0128] In one specific embodiment, the radius of curvature R1 of the first curved surface structure 116 is in the range of 300 mm.

[0129] In one specific embodiment, the radius of curvature R1 of the first curved surface structure 116 is in the range of 400 mm.

[0130] In some embodiments, optionally, such as Figure 7 As shown, the radius of curvature R2 of the second curved surface structure 117 is 110mm to 400mm.

[0131] By limiting the range of the radius of curvature R2 of the second curved surface structure 117, firstly, the radius of curvature is too large, which affects the structural strength of the tile body 110 and ensures that the photovoltaic tile 100 can withstand greater pressure or impact after installation; secondly, the radius of curvature is too small, which ensures that two adjacent photovoltaic tiles 100 form a sufficiently large installation space 210 after overlapping, so as to hide the junction box 131 and the cable 132.

[0132] In one specific embodiment, the radius of curvature R2 of the second curved surface structure 117 is in the range of 110 mm.

[0133] In one specific embodiment, the radius of curvature R2 of the second curved surface structure 117 is in the range of 200 mm.

[0134] In one specific embodiment, the radius of curvature R2 of the second curved surface structure 117 is in the range of 300 mm.

[0135] In one specific embodiment, the radius of curvature R2 of the second curved surface structure 117 is in the range of 400 mm.

[0136] In some embodiments, optionally, such as Figure 9 As shown, the height H3 of the junction box 131 is 1 to 2 times the surface height H1 of the first curved surface structure 116.

[0137] By limiting the proportional relationship between the height H3 of the junction box 131 and the surface height H1 of the first curved structure 116, firstly, the surface height H1 of the first curved structure 116 is prevented from being too large, ensuring that the installation space 210 formed after the two adjacent photovoltaic tiles 100 are overlapped is not too large, effectively avoiding waste of space and materials; secondly, the surface height H1 of the first curved structure 116 is prevented from being too small, ensuring that the installation space 210 formed after the two adjacent photovoltaic tiles 100 are overlapped is large enough to hide the junction box 131 and the cable 132.

[0138] In one specific embodiment, the height H3 of the junction box 131 is 1 times the surface height H1 of the first curved surface structure 116.

[0139] In one specific embodiment, the height H3 of the junction box 131 is 1.1 times the surface height H1 of the first curved surface structure 116.

[0140] In one specific embodiment, the height H3 of the junction box 131 is 1.5 times the surface height H1 of the first curved surface structure 116.

[0141] In one specific embodiment, the height H3 of the junction box 131 is 1.9 times the surface height H1 of the first curved surface structure 116.

[0142] In one specific embodiment, the height H3 of the junction box 131 is twice the surface height H1 of the first curved surface structure 116.

[0143] In some embodiments, optionally, such as Figure 9 As shown, the height H3 of junction box 131 is 1 to 2 times the surface height H2 of the second curved surface structure 117.

[0144] By limiting the proportional relationship between the height H3 of the junction box 131 and the surface height H2 of the second curved structure 117, firstly, the surface height H2 of the second curved structure 117 is prevented from being too large, ensuring that the installation space 210 formed after the two adjacent photovoltaic tiles 100 are overlapped is not too large, effectively avoiding waste of space and materials; secondly, the surface height H2 of the second curved structure 117 is prevented from being too small, ensuring that the installation space 210 formed after the two adjacent photovoltaic tiles 100 are overlapped is large enough to hide the junction box 131 and the cable 132.

[0145] In one specific embodiment, the height H3 of the junction box 131 is 1 times the surface height H2 of the second curved surface structure 117.

[0146] In one specific embodiment, the height H3 of the junction box 131 is 1.1 times the surface height H2 of the second curved surface structure 117.

[0147] In one specific embodiment, the height H3 of the junction box 131 is 1.5 times the surface height H2 of the second curved surface structure 117.

[0148] In one specific embodiment, the height H3 of the junction box 131 is 1.9 times the surface height H2 of the second curved surface structure 117.

[0149] In one specific embodiment, the height H3 of the junction box 131 is twice the surface height H2 of the second curved surface structure 117.

[0150] In some embodiments, the height H3 of the junction box 131 may not exceed the height of the installation space 210, so as to ensure that the two adjacent photovoltaic tiles 100 form a sufficiently large installation space 210 after overlapping, so as to hide the junction box 131 and the cable 132.

[0151] In some embodiments, optionally, mounting holes 1171 are provided at the corners of the tile body 110 to facilitate workers to fix the photovoltaic tile 100 to the building roof.

[0152] In some embodiments, optionally, such as Figure 1 and Figure 2 As shown, the second curved surface structure 117 is provided with at least one mounting hole 1171.

[0153] It should be noted that the number of mounting holes 1171 is at least one, that is, there can be one, two or more mounting holes 1171. Considering the connection strength between the photovoltaic tile 100 and the building roof, the mounting holes 1171 can be flexibly set.

[0154] In one specific embodiment, the number of mounting holes 1171 is one. This design allows the photovoltaic tile 100 to be connected to the building roof while ensuring the structural strength of the tile body 110 to the greatest extent.

[0155] Alternatively, workers can connect the photovoltaic tile 100 to the building roof by passing a connector such as a bolt or pin through the mounting hole 1171.

[0156] Optionally, a buffer layer is provided within the mounting hole 1171, through which the connector connects to the building roof. The connector does not directly contact the wall of the mounting hole 1171, but rather directly contacts the buffer layer. The buffer layer serves as a buffer to prevent the connector from rigidly contacting the wall of the mounting hole 1171.

[0157] Since the second curved surface structure 117 is formed by extending and bending from the second side 115 toward the light-facing side 112, a portion of the curve of the second curved surface structure 117 is closer to the building roof. By providing mounting holes 1171 on the second curved surface structure 117, compared to providing mounting holes 1171 at other locations on the tile body 110, it is possible to improve the connection strength between the photovoltaic tile 100 and the building roof while avoiding impact on other components or structures of the photovoltaic tile 100.

[0158] In one embodiment of this utility model, such as Figure 8 , Figure 10 and Figure 11 As shown, the photovoltaic tile module 200 includes at least two photovoltaic tiles 100 as described in any of the above embodiments. In any two adjacent photovoltaic tiles 100, the second curved surface structure 117 of one photovoltaic tile 100 overlaps with the first curved surface structure 116 of the other photovoltaic tile 100 to form an installation space 210.

[0159] Since the photovoltaic tile module 200 includes the photovoltaic tile 100 in any of the above embodiments, it has the beneficial effects of any of the above embodiments, which will not be repeated here.

[0160] In this utility model, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "join," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "join" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0161] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0162] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0163] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A photovoltaic tile, characterized in that, include: The tile body is a photovoltaic panel, the tile body has a light-facing side and a back-light side, and the tile body has a first side and a second side. The first side extends and bends toward the backlight side to form a first curved surface structure; the second side extends and bends toward the light-facing side to form a second curved surface structure. A junction box is located on the light-facing side of the second curved surface structure; The second curved surface structure of the photovoltaic tile is used to overlap with the first curved surface structure of another photovoltaic tile to form an installation space; the junction box is located within the installation space.

2. Photovoltaic tile according to claim 1, characterized in that, The tile body includes: A tempered glass layer, one side of which is the light-facing side of the tile body; A power generation unit, one side of which is connected to the other side of the tempered glass layer; A backplate, one side of which is connected to the other side of the power generation unit, and the other side of the backplate is the backlight side of the tile body; The junction box is located on the light-facing side of the tempered glass layer, and the junction box is electrically connected to the power generation unit.

3. Photovoltaic tile according to claim 2, characterized in that, The tempered glass layer is provided with a reserved hole, which is used to communicate with the installation space; The cable of the junction box passes through the reserved hole and is electrically connected to the power generation unit.

4. The photovoltaic tile of claim 2, wherein, The tile body also includes: A first encapsulating film is disposed between the tempered glass layer and the power generation unit, the first encapsulating film serving to connect the tempered glass layer and the power generation unit; and / or A second encapsulating film is disposed between the power generation unit and the backplate, and the second encapsulating film is used to connect the power generation unit and the backplate.

5. The photovoltaic tile of claim 2, wherein, The thickness of the tempered glass layer is 3mm to 6mm.

6. The photovoltaic tile of claim 2, wherein, The junction box includes: A positive electrode box and a negative electrode box, wherein the positive electrode box is used to connect to the positive electrode of the power generation unit; and the negative electrode box is used to connect to the negative electrode of the power generation unit; or The junction box is a single-unit junction box, which includes a positive cable and a negative cable. The positive cable is used to connect to the positive terminal of the power generation unit, and the negative cable is used to connect to the negative terminal of the power generation unit.

7. The photovoltaic tile of claim 2, wherein, The stiffness of the tempered glass layer is greater than that of the back plate.

8. Photovoltaic tile according to any of claims 1 to 7, characterized in that, The radius of curvature of the first curved surface structure ranges from 110 mm to 400 mm; and / or The radius of curvature of the second curved surface structure is 110 mm to 400 mm.

9. Photovoltaic tile according to any of claims 1 to 7, characterized in that, The height of the junction box is 1 to 2 times the height of the curved surface of the first curved surface structure; and / or The height of the junction box is 1 to 2 times the height of the curved surface of the second curved surface structure.

10. A photovoltaic shingle assembly, comprising: include: At least two photovoltaic tiles as described in any one of claims 1 to 9, wherein in any two adjacent photovoltaic tiles, the second curved surface structure of one photovoltaic tile overlaps with the first curved surface structure of the other photovoltaic tile to form an installation space.

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