Photovoltaic tile and photovoltaic module

Abstract

The utility model discloses a photovoltaic tile and a photovoltaic assembly. The photovoltaic tile comprises a laminated assembly and a back plate, the laminated assembly comprises a front plate and a battery piece, and the battery piece is covered with the front plate; the back plate comprises a main body plate and an edge locking structure, the main body plate covers the surface of one side, deviating from the front plate, of the battery piece, and the edge locking structure is arranged on the edge of the main body plate and located outside the edge of the laminated assembly; the lockrand structure comprises a vertical plate connected with the main body plate, the vertical plate and the main body plate form a first included angle alpha, the lockrand structure is configured to be in lap joint with a lockrand structure of another photovoltaic tile, the vertical plate and the main body plate form a first included angle alpha, and the lockrand structure is configured to be in lap joint with a lockrand structure of another photovoltaic tile. Reflection textures are formed on the surface of the side, facing the laminated assembly, of the vertical plate. The reflective texture is formed on the surface of the side, facing the laminated assembly, of the vertical plate, so that sunlight emitted to the vertical plate can be reflected to the battery piece through the reflective texture, the sunlight absorbed by the battery piece is increased, and the power generation efficiency of the photovoltaic tile is improved.

Description

Technical Field

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

[0002] Photovoltaic tiles are devices that convert solar energy into electrical energy. The solar cells within the tiles absorb sunlight and convert that light energy into electrical energy. Photovoltaic tiles are installed on rooftops or other building surfaces by overlapping the edges of metal back panels. The overlapping edges of the metal back panels form a seam structure on the same side, but this seam structure blocks sunlight from reaching the photovoltaic modules. Therefore, increasing the amount of sunlight reaching the photovoltaic modules is a key technical problem to be solved. Utility Model Content

[0003] This utility model provides a photovoltaic tile and a photovoltaic module.

[0004] The photovoltaic tile of this application includes a laminated assembly and a backsheet. The laminated assembly includes a front panel and solar cells, with the front panel covering the solar cells. The backsheet includes a main panel and a locking structure. The main panel covers the side surface of the solar cells facing away from the front panel. The locking structure is disposed at the edge of the main panel and located outside the edge of the laminated assembly. The locking structure includes a vertical plate connected to the main panel, the vertical plate forming a first angle α with the main panel. The locking structure is configured to overlap with the locking structure of another photovoltaic tile. The side surface of the vertical plate facing the laminated assembly has a reflective texture.

[0005] The photovoltaic tile of this application covers the surface of the solar cell with a main plate. The edge of the main plate is connected to the vertical plate. The surface of the vertical plate facing the laminated module has a reflective texture, so that sunlight shining on the vertical plate can be reflected by the reflective texture to the solar cell, thereby increasing the amount of sunlight absorbed by the solar cell and improving the power generation efficiency of the photovoltaic tile.

[0006] In some implementations, the first included angle α is in the range of 90°≤α<180°.

[0007] In this way, by setting the range of the first included angle α reasonably, the upright plate can receive and reflect sunlight to a greater extent.

[0008] In some embodiments, the depth of the reflective texture ranges from 0.1 μm to 0.5 μm.

[0009] In this way, by setting the depth of the reflective texture reasonably, the reflection angle of the reflective texture to light is kept within the design range.

[0010] In some embodiments, the locking structure is disposed on the two opposite edges of the main body plate along a first direction, and the locking structure overlaps with the locking structure of another photovoltaic tile adjacent along the first direction.

[0011] Thus, by setting the locking edge structure on the two opposite edges of the main plate along the first direction, the locking edge structure overlaps with the locking edge structure of another photovoltaic tile adjacent in the first direction, so that multiple photovoltaic tiles can be overlapped sequentially along the first direction.

[0012] In some embodiments, the locking structure extends along a second direction, which is parallel to the side length direction of the edge of the main plate where the locking structure is located, and the length of the locking structure extending along the second direction ranges from 0.8m to 6m.

[0013] Thus, by extending the seam lock structure along the second direction, that is, along the side length of the edge of the main plate where the seam lock structure is located, the connection strength between the two back plates connected by the seam lock structure is improved.

[0014] In some embodiments, the upright includes a first end and a second end, the first end being connected to the main body plate and the second end being located away from the main body plate, the second end being configured to abut against the second end of another upright that is overlapped as the back plate overlaps with another back plate.

[0015] In this way, the structural stability between the two overlapping uprights is improved by the second end abutting against the second end of the other upright.

[0016] In some embodiments, the vertical distance between the second end and the main body plate ranges from 18mm to 68mm.

[0017] In this way, by setting a reasonable vertical distance between the second end and the main plate, that is, by setting a reasonable height difference between the position where the vertical plate is furthest from the main plate and the main plate relative to the main plate, the obstruction of sunlight by the vertical plate is reduced, and the concentrated reflection effect of the reflective texture on sunlight is optimized.

[0018] In some embodiments, the reflective texture includes a plurality of microstructures arranged along a third direction. Each microstructure includes a first side for reflecting sunlight. The angle between the plurality of first side and the upright plate varies with a gradient along the third direction, which is a vertical direction pointing from the second end to the plane where the main plate is located.

[0019] In this way, by arranging multiple microstructures along a third direction, that is, in the vertical direction from the second end to the plane where the main plate is located, and by varying the angle between the first side and the upright plate along the third direction, the solar radiation angle changes, allowing more sunlight to be reflected to the laminated module, thereby improving the power generation efficiency of the photovoltaic tile.

[0020] In some embodiments, the angle between the first side and the upright plate decreases sequentially from the second end to the first end; or,

[0021] The locking structure is provided on both opposite edges of the main body plate. The angle between the first side and the upright plate decreases from the second end to the first end and increases near the first end.

[0022] In this way, by gradually decreasing the angle between the first side and the vertical plate from the second end to the first end, it adapts to the change in the incident angle of sunlight. Meanwhile, the angle between the first side and the vertical plate near the first end increases, so that sunlight shining on the vicinity of the first end can be reflected to the vertical plate on the opposite edge and then reflected again to the laminated module. This increases the amount of light entering the laminated module after being reflected from the vertical plate, which is beneficial to improving power generation efficiency.

[0023] The photovoltaic module of this application includes a plurality of photovoltaic tiles as described above, and the plurality of photovoltaic tiles are electrically connected.

[0024] In this way, connecting multiple photovoltaic tiles electrically can increase power generation.

[0025] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0026] The above and / or additional aspects and advantages of this invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0027] Figure 1 This is a three-dimensional structural diagram of the photovoltaic tile according to an embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of the structure of a photovoltaic module according to an embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram of the overlapping structure of the photovoltaic tile according to an embodiment of this utility model.

[0030] Explanation of reference numerals in the attached figures:

[0031] 100-Photovoltaic tile; 10-Laminated module; 11-Front panel; 12-Solar cell; 20-Back panel; 21-Main panel; 30-Seamless structure; 31-Standing panel; A-First end; B-Second end; 33-Reflective texture; 331-Microstructure; 3311-First side; 3312-Second side; 303-Ventilation duct; 1000-Photovoltaic module; 1001-Mounting surface. Detailed Implementation

[0032] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0033] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and settings are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or settings discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0035] Please see Figures 1-3 The photovoltaic tile 100 of this application includes a laminated assembly 10 and a back sheet 20. The laminated assembly 10 includes a front panel 11 and a solar cell 12. The front panel 11 covers the solar cell 12. The back sheet 20 includes a main panel 21 and a locking structure 30. The main panel 21 covers the side surface of the solar cell 12 away from the front panel 11. The locking structure 30 is disposed at the edge of the main panel 21 and located outside the edge of the laminated assembly 10. The locking structure 30 includes a vertical plate 31 connected to the main panel 21. The vertical plate 31 forms a first included angle α with the main panel 21. The locking structure 30 is configured to overlap with the locking structure 30 of another photovoltaic tile 100. The side surface of the vertical plate 31 facing the laminated assembly 10 has a reflective texture 33.

[0036] The photovoltaic tile 100 of this application embodiment covers the surface of the solar cell 12 with a main plate 21. The edge of the main plate 21 is connected to the vertical plate 31. A reflective texture 33 is formed on the side of the vertical plate 31 facing the laminated assembly 10, so that sunlight shining on the vertical plate 31 can be reflected by the reflective texture 33 to the laminated assembly 10, thereby increasing the sunlight absorbed by the solar cell 12 and improving the power generation efficiency of the photovoltaic tile 100.

[0037] Specifically, the photovoltaic tile 100 can be applied to building surfaces or outdoor flat ground. For example, the photovoltaic tile 100 can be laid on roofs, walls, or public facilities such as streetlights. Alternatively, the photovoltaic tile 100 can be laid over large areas to construct photovoltaic power generation bases. The solar cell 12 is used to convert light energy into electrical energy. The solar cell 12 can be a crystalline silicon cell manufactured using technologies such as Perc (Passivated Emitter Rear Cell), Topcon (Tunnel Oxide Passivated Contact), or HJT (Heterojunction with Intrinsic Thin-film), or it can be a perovskite cell.

[0038] The front panel 11 and the back panel 20 respectively cover the two sides of the battery cell 12 in the thickness direction to protect the battery cell 12. It should be noted that the front panel 11 and the back panel 20 covering the surface of the battery cell 12 means that the projection range of the front panel 11 and the back panel 20 on the battery cell 12 in the thickness direction can cover the corresponding side surface of the battery cell 12, and there is no limitation on whether the front panel 11 and the battery cell 12, or the back panel 20 and the battery cell 12 are in direct contact.

[0039] Optionally, the laminated module 10 may also include weather-resistant membranes, waterproof membranes, adhesive membranes, or other functional layers. The layers in the laminated module 10 and the backsheet 20 are stacked sequentially along the thickness direction of each layer. It is understood that the thickness direction of the photovoltaic tile 100 is consistent with the thickness direction of the laminated module 10 (and its layers) and the backsheet 20.

[0040] Optionally, the photovoltaic tile 100 is flat in shape, and the structure of each layer in the laminated module 10 and the main plate 21 of the back sheet 20 are all flat structures.

[0041] The photovoltaic tile 100 is typically laid with the front panel 11 on top and the back panel 20 on the bottom. For ease of explanation, the direction from the front panel 11 to the back panel 20 along the thickness direction of the photovoltaic tile 100 is defined as the top-to-bottom direction. The surface of the solar cell 12 facing the front panel 11 is the light-receiving surface, and the layers in the laminated module 10 located above the solar cell 12 are all light-transmitting.

[0042] Optionally, the front panel 11 can be made of highly transparent materials such as resin, plastic, or glass. For example, the front panel 11 can be a transparent PET (polyethylene terephthalate) sheet. Alternatively, the front panel 11 can be a tinted glass sheet.

[0043] Optionally, the projections of the front panel 11 along the thickness direction onto the plane where the battery cell 12 is located coincide.

[0044] Optionally, the back panel 20 and the laminating assembly 10 can be laminated together, or they can be connected by fasteners such as locking screws and rivets, or an adhesive layer can be provided on the back panel 20 and the laminating assembly 10, and the back panel 20 and the laminating assembly 10 can be connected by adhesive.

[0045] Optionally, the back panel 20 can be made of aluminum or aluminum alloy plate, color steel plate, aluminized zinc plate, galvanized plate, etc.

[0046] The back panel 20 has at least two opposite edges that extend beyond the same-side edge of the laminate assembly 10. Locking structures 30 are provided on the two opposite edges of the back panel 20 that extend beyond the laminate assembly 10 and overlap with the locking structure 30 of the adjacent photovoltaic tile 100 in the opposite direction of the two locking structures 30.

[0047] Both the seam locking structure 30 and the main body plate 21 are rigid components and form a rigid connection, allowing the back plate 20 to be connected to another back plate 20 by overlapping the seam locking structure 30 with the seam locking structure 30 of the other back plate 20. Optionally, the seam locking structure 30 is also made of metal. Furthermore, the main body plate 21 and the seam locking structure 30 are integrally formed.

[0048] The reflective texture 33 can be formed on the surface of the vertical plate 31 through processes such as mold embossing, laser engraving, photochemical etching, and CNC machining. The reflective texture 33 can be reflected by raised structures protruding from the surface of the vertical plate 31, or by structures that are recessed relative to the surface of the vertical plate 31.

[0049] Optionally, the width of the upright panel 31 is significantly smaller than that of the main panel 21. The upright panel 31 may extend in a long strip along the edge of the main panel 21. The reflective texture 33 completely covers the surface of the upright panel facing the laminate assembly 10.

[0050] In some implementations, the first included angle α is in the range of 90°≤α<180°.

[0051] Thus, by setting the range of the first included angle α appropriately, the vertical panel can receive and reflect sunlight to a maximum extent.

[0052] Specifically, the upright plate 31 may be a flat plate, with a first included angle α formed on the side of the upright plate 31 facing the laminating assembly. The upright plate 31 extends along the edge of the main plate 21 and at least exceeds the side length of the laminating assembly on that side edge. For example, the first included angle α may be 90°, 112.5°, 116°, 120°, etc.

[0053] Optionally, such as Figure 3 As shown, the first included angle α is an obtuse angle. The upright plate 31 overlaps with one side upright plate 31 on another back plate 20, and the two overlapping upright plates 31 are inclined towards each other to form a ventilation channel 303.

[0054] Furthermore, the upright plate 31 extends along the edge of the main plate 21 in a long strip shape, and the resulting ventilation channel 303 runs through the edge of the main plate 21.

[0055] Optionally, the locking structure 30 is disposed on the two opposite edges of the back plate 20 along the first direction, and the two edges of the main plate 21 in the first direction are respectively connected to the two upright plates 31, and the two first included angles α formed by the two upright plates 31 and the main plate 21 face opposite directions. The same main plate 21 and the two upright plates 31 can form two equal first included angles α, or they can form two first included angles α with different angles.

[0056] In some embodiments, the depth of the reflective texture 33 ranges from 0.1 μm to 0.5 μm. It should be noted that... Figure 2 The texture structure 33 and the upright plate 31 in the figure are partially enlarged. The structural proportions of the reflective texture 33, the upright plate 31 and the photovoltaic tile 100 as a whole shown in the figure are not intended to limit the technical solution of this application.

[0057] Thus, by setting the depth of the reflective texture 33 to be reasonable, the reflection angle of the reflective texture 33 to the light is within the design range.

[0058] Specifically, the depth of the reflective texture 33 refers to the depth of the reflection texture 33 recessed relative to the surface of the vertical plate, and also refers to the height of the reflection texture 33 protruding from the surface of the vertical plate. The depth of the reflection texture 33 can be 0.1um, 0.25um, 0.3um, 0.45um, 0.48um, or 0.5um.

[0059] Please see Figure 1 and Figure 2 In some embodiments, the locking structure 30 is disposed on the two opposite edges of the main body plate 21 along the first direction, and the locking structure 30 overlaps with the locking structure 30 of another photovoltaic tile 100 adjacent to it along the first direction.

[0060] Thus, by setting the locking edge structure 30 on the two opposite sides of the main body plate 21 along the first direction, the locking edge structure 30 overlaps with the locking edge structure 30 of another photovoltaic tile 100 adjacent in the first direction, so that multiple photovoltaic tiles 100 can be overlapped sequentially along the first direction.

[0061] Specifically, the locking edge structure 30 is disposed on the opposite sides of the main body plate 21 along the first direction, and the laminated assembly 10 is located between the two upright plates 31. The reflective texture 33 is formed on the opposite side surface of the two locking edge structures 30 on the same photovoltaic tile 100, that is, the side surface facing the laminated assembly 10. The reflective texture 33 on the two upright plates 31 can reflect more sunlight to the laminated assembly 10, thereby increasing the light energy absorbed by the solar cell 12.

[0062] Please see Figure 1 and Figure 2 In some embodiments, the locking structure 30 extends along a second direction, which is parallel to the side length direction of the edge of the main body plate 21 where the locking structure 30 is located, and the length of the locking structure 30 extending along the second direction ranges from 0.8m to 6m.

[0063] Thus, by extending the locking structure 30 along the second direction, that is, along the side length direction of the edge of the main body plate 21 where the locking structure 30 is located, the connection strength between the two back plates 20 connected by the locking structure 30 is improved.

[0064] Specifically, taking a square flat plate as an example, the two intersecting sides of the main plate 21 extend along a first direction and a second direction, respectively. The two edges of the main plate 21 along the first direction are connected to two vertical plates 31, respectively. The vertical plates 31 extend along the side length direction of the main plate 21 and completely cover that side edge; that is, the length of the locking structure 30 extending along the second direction is equal to the side length of the edge of the main plate 21 to which the locking structure 30 is connected. For example, the length of the locking structure 30 extending along the second direction can be 0.8m, 1.45m, 2.3m, 4.2m, 5.7m, or 6m.

[0065] Please see Figure 2 In some embodiments, the upright plate 31 includes a first end A and a second end B, the first end A being connected to the main plate 21, and the second end B being located away from the main plate 21. The second end B is configured to abut against the second end B of the other upright plate 31 that is being overlapped as the back plate 20 overlaps with another back plate 20.

[0066] In this way, the structural stability between the two overlapping uprights is improved by the second end abutting against the second end of the other upright.

[0067] Optionally, the two main body plates 21 of the two overlapping back plates 20 are laid flat on the mounting surface 1001, which can be a horizontal plane with a first included angle α of 90°, meaning the upright plate 31 is vertically positioned relative to the horizontal plane. The first ends A of the two overlapping upright plates 31 abut against each other, and the two second ends B also abut against each other, so that the two overlapping upright plates 31 approximately overlap.

[0068] Please see Figure 2 In some embodiments, the vertical distance between the second end B and the main body plate 21 ranges from 18mm to 68mm.

[0069] Thus, by setting a reasonable vertical distance between the second end B and the main body plate 21, that is, by setting a reasonable height difference between the position where the vertical plate 31 is furthest from the main body plate 21 and the main body plate 21, the obstruction of sunlight by the vertical plate 31 is reduced, and the concentrated reflection effect of the reflective texture 33 on sunlight is optimized.

[0070] Specifically, the upright plate 31 includes a first end A connected to the main plate 21 and a second end B away from the main plate 21. The second ends B of the two overlapping upright plates 31 abut against each other, and the second end B is located on the upright plate 31 at the furthest distance from the main plate 21. For example, the vertical distance between the second end and the main plate can be 18mm, 21mm, 33mm, 36mm, 45.5mm, 57mm, or 68mm.

[0071] Please see Figure 2 , Figure 2 The straight line with arrows indicates the incident and reflection paths of sunlight. In some embodiments, the reflective texture 33 includes a plurality of microstructures 331 arranged along a third direction. Each microstructure 331 includes a first side surface 3311 for reflecting sunlight. The angle between the plurality of first side surfaces 3311 and the upright plate 31 varies with a gradient along the third direction, which is the vertical direction pointing from the second end B to the plane where the main plate 21 is located.

[0072] Thus, by arranging multiple microstructures 331 along a third direction, that is, in the vertical direction from the second end B to the plane where the main plate 21 is located, and by varying the angle between the first side 3311 and the upright plate 31 along the third direction, the solar radiation incident angle changes, allowing more sunlight to be reflected to the laminated module 10, thereby improving the power generation efficiency of the photovoltaic tile 100.

[0073] Specifically, the microstructure 331 can be at least one of the following structural forms: grating structure, sawtooth structure, periodic concave-convex structure, microlens array structure, pyramid structure, honeycomb structure, hierarchical micro-nano structures, pit array structure, etc. The microstructure 331 can reflect and refract sunlight through one or more of the following methods: specular reflection, diffuse reflection, grating reflection, etc.

[0074] For example, the microstructure 331 is triangular prism-shaped, with one side of the triangular prism-shaped microstructure 331 coinciding with the surface of the upright plate 31, forming a triangular protrusion relative to the surface of the upright plate 31. The other two sides of the microstructure 331 are a first side 3311 and a second side 3312, respectively. The first side 3311 faces the laminating assembly 10 and forms an angle of less than 90° with the surface of the upright plate 31. The second side 3312 forms an angle with both the first side 3311 and the upright plate 31, and can be approximately parallel to the plane of the main body plate 21.

[0075] Optionally, the widths of the plurality of first sides 3311 are equal along a third direction.

[0076] In some embodiments, the angle between the first side surface 3311 and the upright plate 31 decreases sequentially from the second end B to the first end A.

[0077] Please see Figure 1 and Figure 2 In some embodiments, the locking structure is provided on both opposite sides of the main body plate 21, and the angle between the first side 3311 and the upright plate 31 decreases sequentially from the second end B to the first end A, and increases near the first end A.

[0078] Thus, by gradually decreasing the angle between the first side surface 3311 and the vertical plate 31 from the second end B to the first end A, the angle of incidence of sunlight is adapted to the change in the angle of incidence of sunlight. Meanwhile, the angle between the first side surface 3311 and the vertical plate 31 near the first end A increases, so that sunlight incident on the vicinity of the first end A can be reflected to the vertical plate 31 on the opposite edge and then reflected again to the laminated module 10. This increases the amount of light entering the laminated module 10 after being reflected from the vertical plate 31, which is beneficial to improving power generation efficiency.

[0079] Specifically, the photovoltaic tile 100 can be laid on a horizontal surface, with the angle between the vertical plate 31 and the main plate 21 being 90°. Taking the microstructure 331 as a triangular prism as an example, the angle between the first side 3311 closest to the first end A and the vertical plate 31 is 75°, and the angle between the first side 3311 closest to the second end B and the vertical plate 31 is 15°. The angles between the multiple first side 3311 arranged from the first end A to the second end B and the vertical plate 31 decrease from 75° to 15° in equal or unequal increments.

[0080] For example, the angle between the first side 3311 closest to the first end A and the upright plate 31 is 75°, and the angle between the first side 3311 closest to the second end B and the upright plate 31 is 35°. The angles between the multiple first side 3311 arranged from the first end A to the second end B and the upright plate 31 decrease from 75° to 15° in equal or unequal increments, and then increase to 35° one by one.

[0081] In other embodiments, the microstructure 331 may be a groove, which is a recess, and the grooves are spaced apart on the stand plate 31 along a third direction. The width and spacing of the grooves may have a gradient change along the third direction to increase the amount of light reflected from the stand plate 31 to the laminate assembly 10.

[0082] In other embodiments, the microstructure 331 may be particles with curved surfaces that protrude from the surface of the upright plate 31. In this embodiment, the reflective texture 33 reflects sunlight through diffuse reflection. The height at which the microstructure 331 protrudes from the surface of the upright plate 31 (i.e., the depth of the reflective texture 33) and the spacing of the microstructure 331 may vary in a gradient along a third direction so that sunlight incident on the upright plate 31 at various heights can be reflected to the laminate assembly 10.

[0083] The photovoltaic module 1000 (not shown) of this embodiment includes a plurality of photovoltaic tiles 100 electrically connected. Thus, the electrical connection of the plurality of photovoltaic tiles 100 can increase the power generation capacity of the photovoltaic module 1000.

[0084] Optionally, in some embodiments, multiple photovoltaic tiles 100 are arranged along a first direction and a fourth direction, forming an angle between the first and fourth directions. The photovoltaic tiles 100 arranged along the first direction have locking edges 30 on their opposite sides in the first direction, and are sequentially overlapped along the first direction via the locking edges 30; the photovoltaic tiles 100 arranged along the fourth direction also have locking edges 30 on their opposite sides in the fourth direction, and are sequentially overlapped along the fourth direction via the locking edges 30. The outermost photovoltaic tile 100 along the first direction can overlap with the outermost photovoltaic tile 100 along the fourth direction. In this embodiment, the photovoltaic tiles 100 arranged along the first direction and the photovoltaic tiles 100 arranged along the fourth direction can be mounted on different mounting surfaces 1001.

[0085] Optionally, in other embodiments, a plurality of photovoltaic tiles 100 are arranged along a first direction and a second direction, the first direction and the second direction being parallel to the same mounting surface 1001. The uprights 31 on the plurality of photovoltaic tiles 100 may be parallel to each other along the first direction and extend in a strip shape along the second direction.

[0086] In the description of embodiments of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0087] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of this utility model. 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.

[0088] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A photovoltaic tile, characterized in that, include: A laminated assembly, the laminated assembly including a front panel and battery cells, the front panel covering the battery cells; and A backsheet, the backsheet comprising a main plate and a locking structure, the main plate covering the side surface of the battery cell facing away from the front plate, the locking structure being disposed at the edge of the main plate and located outside the edge of the laminate assembly; The edge-locking structure includes a vertical plate connected to the main body plate, the vertical plate forming a first angle α with the main body plate, the edge-locking structure being configured to overlap with the edge-locking structure of another photovoltaic tile, and the surface of the vertical plate facing the laminated assembly having a reflective texture.

2. The photovoltaic tile according to claim 1, characterized in that, The range of the first included angle α is: 90°≤α<180°.

3. The photovoltaic tile according to claim 1, characterized in that, The depth range of the reflective texture is 0.1um to 0.5um.

4. The photovoltaic tile according to claim 1, characterized in that, The locking structure is disposed on the two opposite edges of the main body plate along the first direction, and the locking structure overlaps with the locking structure of another photovoltaic tile adjacent to it along the first direction.

5. The photovoltaic tile according to claim 1, characterized in that, The locking edge structure extends along a second direction, which is parallel to the side length direction of the edge of the main plate where the locking edge structure is located. The length of the locking edge structure extending along the second direction ranges from 0.8m to 6m.

6. The photovoltaic tile according to claim 1, characterized in that, The upright plate includes a first end and a second end, the first end being connected to the main plate, and the second end being away from the main plate. The second end is configured to abut against the second end of the other upright plate that is overlapped as the back plate overlaps with another back plate.

7. The photovoltaic tile according to claim 6, characterized in that, The vertical distance between the second end and the main body plate ranges from 18mm to 68mm.

8. The photovoltaic tile according to claim 6, characterized in that, The reflective texture includes multiple microstructures arranged along a third direction. Each microstructure includes a first side for reflecting sunlight. The angle between the multiple first side and the upright plate varies with a gradient along the third direction, which is a vertical direction pointing from the second end to the plane where the main plate is located.

9. The photovoltaic tile according to claim 8, characterized in that, The angle between the first side and the upright plate decreases sequentially from the second end to the first end; or, The locking structure is provided on both opposite edges of the main body plate. The angle between the first side and the upright plate decreases sequentially from the second end to the first end, and increases near the first end.

10. A photovoltaic module, characterized in that, The photovoltaic module includes a plurality of photovoltaic tiles as described in any one of claims 1-9, and the plurality of photovoltaic tiles are electrically connected.

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