Photovoltaic tile and photovoltaic module

Abstract

The utility model discloses a photovoltaic tile and a photovoltaic assembly. The photovoltaic tile comprises a composite panel, a back plate and a battery piece, the composite panel comprises a fluorine-containing adhesive film, a cut-off layer and a substrate which are stacked in sequence, the fluorine-containing adhesive film and the substrate have light transmission performance, and the cut-off layer is configured to block light with the wave band of 10-400 mm and transmit visible light; the back plate is a metal plate; and the battery piece is positioned between the substrate and the back plate. The composite panel and the back plate are respectively arranged on the front side and the back side of the battery piece, the fluorine-containing adhesive film is arranged on the outermost layer of the composite panel, and ultraviolet light is blocked through the cut-off layer, so that the substrate is prevented from being subjected to ultraviolet radiation to a certain extent, the weather resistance of the composite panel is improved, and the embrittlement discoloration of the composite panel is slowed down.

Description

TECHNICAL FIELD

[0001] The utility model relates to photovoltaic technology field more specifically, relate to a kind of photovoltaic tile and photovoltaic module. BACKGROUND

[0002] Photovoltaic tile is the equipment that solar energy is converted into electric energy, and the cell piece in photovoltaic tile can absorb light and convert light energy into electric energy. Photovoltaic tile is usually set in outdoor open environment, and the light-receiving surface of the cell piece is provided with a light-transmitting panel such as a glass panel to protect the cell piece while not affecting the transmission of light. In order to reduce the overall weight of the photovoltaic tile, the panel of the related art is also often made of plastic material. However, the surface of the plastic plate is prone to aging, brittleness, discoloration and other problems under the influence of environmental factors such as light, heat and humidity, wind and rain, lightning, dust and sand. SUMMARY

[0003] The utility model embodiment provides a kind of photovoltaic tile and photovoltaic module.

[0004] The photovoltaic tile of the present application embodiment includes a composite panel, a back plate and a cell piece, the composite panel includes a fluorine-containing adhesive film, a cutoff layer and a substrate stacked in turn, the fluorine-containing adhesive film and the substrate both have light-transmitting property, the cutoff layer is configured to block light in the 10mm-400mm wave band and transmit visible light;The back plate is a metal plate;The cell piece is located between the substrate and the back plate.

[0005] The photovoltaic tile of the present application embodiment is provided on the front and back of the cell piece by the composite panel and the back plate respectively, a fluorine-containing adhesive film is provided on the outermost layer of the composite panel, and the cutoff layer blocks light in the 10mm-400mm wave band, thereby avoiding the substrate from being subjected to ultraviolet radiation to some extent, improving the weather resistance of the composite panel, and slowing down the brittleness and discoloration of the composite panel.

[0006] In some embodiments, the cell piece is located within the projection range of the back plate along the thickness direction in the plane where the cell piece is located.

[0007] In some embodiments, the cell piece is located within the projection range of the substrate along the thickness direction in the plane where the cell piece is located, and the fluorine-containing adhesive film completely covers the surface of the substrate away from the cell piece.

[0008] In some embodiments, the fluorine-containing adhesive film is at least one of ETFE adhesive film, PVDF adhesive film and PVF adhesive film, and the thickness of the fluorine-containing adhesive film ranges from 20μm to 40μm.

[0009] In some embodiments, the photovoltaic tile includes a first adhesive film layer, the first adhesive film layer is located between the substrate and the cell piece, and the first adhesive film layer is a transparent plastic film.

[0010] In some embodiments, the photovoltaic tile comprises a second film layer, the second film layer is between the cell sheet and the back plate.

[0011] In some embodiments, the photovoltaic tile comprises a first film layer and a second film layer, the first film layer is between the substrate and the cell sheet, the second film layer is between the cell sheet and the back plate, the projection of the first film layer and the second film layer on the cell sheet along the thickness direction of the composite panel coincides with the outer contour of the cell sheet.

[0012] In some embodiments, the photovoltaic tile comprises a plurality of cell sheets and a solder strip, the plurality of cell sheets are arranged along at least one direction, two adjacent cell sheets along a first direction are partially stacked;

[0013] The solder strip connects two adjacent cell sheets along the first direction, the solder strip comprises a plurality of first solder segments and at least one second solder segment, the first solder segment is connected with a corresponding cell sheet, the second solder segment connects two adjacent first solder segments along the first direction, the second solder segment is between two adjacent cell sheets and across the stacking area of two adjacent cell sheets, the second solder segment is in a flat shape.

[0014] In some embodiments, the cell sheet comprises a first surface and a second surface opposite to each other, in two adjacent cell sheets, the first surface of one of the cell sheets is provided with the first solder segment, and the second surface of the other cell sheet is provided with the first solder segment.

[0015] The photovoltaic module of the embodiments of the present application comprises a plurality of the above photovoltaic tiles, and the plurality of photovoltaic tiles are electrically connected.

[0016] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0017] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the appended drawings.

[0018] Figure 1 is a perspective view of a photovoltaic tile according to an embodiment of the present application;

[0019] Figure 2 is an exploded structural view of a photovoltaic tile according to an embodiment of the present application;

[0020] Figure 3is a cross-sectional structure schematic diagram of a photovoltaic tile of an embodiment of the present application;

[0021] Figure 4 is a partial structure schematic diagram of a photovoltaic tile of an embodiment of the present application;

[0022] Figure 5 is a side schematic diagram of a photovoltaic tile of an embodiment of the present application.

[0023] Legend:

[0024] 100 - photovoltaic tile; 10 - cell piece; 11 - laminated area; 12 - first surface; 13 - second surface; 20 - solder strip; 21 - first soldering section; 22 - second soldering section; 30 - composite panel; 31 - fluorine-containing adhesive film; 32 - cut-off layer; 33 - substrate; 40 - backboard; 51 - first adhesive film layer; 52 - second adhesive film layer; D1 - first direction; D2 - second direction. DETAILED DESCRIPTION

[0025] The embodiments of the present application will be described in detail below with reference to the drawings, wherein the same or similar components are denoted by the same or similar reference numerals throughout the drawings. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application and cannot be understood as limiting the present application.

[0026] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "over" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0027] The following disclosure provides many different embodiments or examples for implementing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are only examples and the purpose is not to limit the present application. In addition, the present application can repeatedly refer to numbers and / or letters in different examples, and such repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those skilled in the art can realize the application of other processes and / or the use of other materials.

[0028] The front and back surfaces of the cell sheet are covered by the composite panel and the back panel in the photovoltaic tile to protect the cell sheet. The composite panel and the back panel are made of plastic plates, which can greatly reduce the weight of the assembly compared to metal plates and glass plates. However, photovoltaic tiles are usually used in outdoor environments with sufficient light. Factors such as ultraviolet radiation, rain erosion, and high temperature after exposure to sunlight accelerate the embrittlement, discoloration, and thermal deformation of plastic plates. Therefore, simply replacing metal plates or glass plates with plastic plates can easily affect the service life of photovoltaic tiles.

[0029] Referring to Figures 1-3 The photovoltaic tile 100 of the embodiment of the present application includes a composite panel 30, a back panel 40, and a cell sheet 10. The composite panel 30 includes a fluorine-containing adhesive film 31, a cutoff layer 32, and a substrate 33 stacked in sequence. The fluorine-containing adhesive film 31 and the substrate 33 both have light transmittance. The cutoff layer 32 is configured to block light in the wavelength range of 300-400 nm and transmit visible light. The back panel 40 is a metal plate. The cell sheet 10 is located between the substrate 33 and the back panel 40.

[0030] The photovoltaic tile 100 of the embodiment of the present application is provided with the composite panel 30 and the back panel 40 on the front and back surfaces of the cell sheet 10, respectively. The fluorine-containing adhesive film 31 is provided on the outermost layer of the composite panel 30, and the cutoff layer 32 is used to block light in the wavelength range of 300-400 nm, thereby to a certain extent avoiding the substrate 33 from being subjected to ultraviolet radiation, improving the weather resistance of the composite panel 30, and slowing down the embrittlement and discoloration of the composite panel 30.

[0031] 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 a roof, a wall, or a public facility such as a street lamp. For another example, the photovoltaic tile 100 can also be laid in a large area to build a photovoltaic power generation base.

[0032] The photovoltaic tile 100 is in the form of a flat plate as a whole, and the cell sheet 10 is in the form of a flat plate as a whole after being pressed. The cell sheet 10 is used to convert light energy into electrical energy. The cell sheet 10 can be a crystalline silicon cell manufactured by using Perc (Passivated Emitter Rear Cell) technology, Topcon (Tunnel Oxide Passivated Contact) technology, or HJT (Heterojunction with Intrinsic Thin-film) technology. The cell sheet 10 can also be a perovskite cell.

[0033] The composite panel 30 and the back panel 40 can both be in the form of a planar thin plate. The back panel 40 can be an aluminum plate, which is relatively light in weight and has high reliability.

[0034] Optionally, the substrate 33 is made of engineering plastic with good light transmittance, for example, the substrate 33 is mainly made of PET (Polyethylene glycol terephthalate).

[0035] The cutoff layer 32 can be attached, adhered or deposited on the substrate 33, and the fluorine-containing adhesive film 31 can be attached to the side surface of the cutoff layer 32 away from the substrate 33. The cutoff layer 32 can reflect or absorb light in the wavelength range of 400 nm, i.e. ultraviolet light. Further, the cutoff layer 32 mainly blocks light in the wavelength range of 400 nm.

[0036] The cutoff layer 32 can be an adhesive film made of POE (Polyolefin Elastomer) as the main material, which adheres the fluorine-containing adhesive film 31 and the substrate 33, effectively cuts off ultraviolet light and firmly adheres, while the POE adhesive film has good waterproof performance, which can to some extent avoid the hydrolysis of the substrate 33, especially the PET board.

[0037] The fluorine-containing adhesive film 31 is an adhesive film made of fluoroplastic, which has good resistance to ultraviolet radiation and wind and sand abrasion, and can protect the cutoff layer 32. The superposition of the cutoff layer 32 and the fluorine-containing adhesive film 31 can prevent the damage and aging of the substrate 33 in many ways, and improve the service life of the composite panel 30.

[0038] Specifically, the cutoff layer 32 is a high-cutoff POE adhesive film, which can adhere the cutoff layer 32 and the substrate 33, and the fluorine-containing adhesive film 31 in contact with the cutoff layer 32 can block the ultraviolet light from entering the substrate 33 to the greatest extent.

[0039] Please refer to Figure 1 and Figure 3 In some embodiments, the battery piece 10 is located within the projection range of the back plate 40 along the thickness direction in the plane of the battery piece 10. In this way, by locating the battery piece 10 within the projection range of the back plate 40, the back plate 40 covers the back of the battery piece 10, so that the back plate 40 can effectively protect the battery piece 10, and has high mechanical strength, which is conducive to the stability of the structure.

[0040] Specifically, the edge of the back plate 40 can be aligned with the edge of the battery piece 10 along the thickness direction of the battery piece 10, or can partially exceed the edge of the battery piece 10 in the width or length direction.

[0041] Please refer to Figure 1 and Figure 3In some embodiments, the battery sheet 10 is located within the projection range of the substrate 33 along the thickness direction in the plane where the battery sheet 10 is located, and the fluorine-containing adhesive film 31 completely covers the surface of the substrate 33 away from the battery sheet 10. In this way, the fluorine-containing adhesive film 31 can sufficiently protect the substrate 33 and the battery sheet 10, reduce the ultraviolet radiation entering the substrate 33, reduce surface wear and scratching, and play a good insulation protection effect, thereby improving the service life of the photovoltaic tile 100 in multiple aspects.

[0042] Specifically, the edges of the composite panel 30 can partially exceed the edges of the battery sheet 10, or can be aligned with the edges of the battery sheet 10 along the thickness direction of the battery sheet 10. The edges of the fluorine-containing adhesive film 31 are flush with or exceed the edges of the substrate 33 to achieve complete coverage of the surface of the composite panel 30 contacting the external environment.

[0043] In some embodiments, the fluorine-containing adhesive film 31 is at least one of an ETFE adhesive film, a PVDF adhesive film, and a PVF adhesive film, and the thickness of the fluorine-containing adhesive film 31 ranges from 20 μm to 40 μm (inclusive).

[0044] In this way, by covering the side surface of the substrate 33 away from the battery sheet 10 with the fluorine-containing adhesive film 31, the weather resistance of the composite panel 30 is improved, thereby helping to increase the service life of the composite panel 30.

[0045] Specifically, the fluorine-containing adhesive film 31 is made of at least one of ETFE (ethylene-tetra-fluoro-ethylene), PVDF (polyvinylidene difluoride), and PVF (fluoroethylene homopolymer) as the main material together with other additives. The fluorine-containing adhesive film 31 has good performance in terms of anti-aging, chemical resistance, weather resistance, ultraviolet radiation resistance, sand abrasion resistance, etc., and has good insulation and light transmission properties.

[0046] Optionally, the fluorine-containing adhesive film 31 is an equal-thickness film located at the outermost side of the light-receiving surface of the photovoltaic tile 100. The thickness of the fluorine-containing adhesive film 31 can be 20 μm, 25 μm, 36 μm, or 40 μm.

[0047] Please refer to Figure 2 and Figure 3 In some embodiments, the photovoltaic tile 100 includes a first adhesive film layer 51 located between the substrate 33 and the battery sheet 10, and the first adhesive film layer 51 is a transparent plastic film. In this way, the first adhesive film layer 51 is a transparent plastic film, thereby stabilizing the bonding of the substrate 33 and the battery sheet 10 while improving the light transmittance, thereby facilitating the improvement of the power generation capacity of the photovoltaic tile 100.

[0048] Specifically, the first adhesive film layer 51 can be a high-transparency POE film. POE (Polyolefin Elastomer) is a new type of thermoplastic plastic made of ethylene and octene through in-situ polymerization, and the water vapor transmission rate is lower than that of EVA adhesive film and PVB adhesive film.

[0049] In some embodiments, the cutoff layer 32 is a high-cutoff POE film, the high-transparency POE film, and the substrate 33 is a PET plate, so as to effectively block water vapor on both sides of the substrate 33, avoiding or slowing down the hydrolysis of the substrate 33.

[0050] Referring to Figure 2 and Figure 3 In some embodiments, the photovoltaic tile 100 includes a second adhesive film layer 52, and the second adhesive film layer 52 is located between the cell sheet 10 and the back plate 40.

[0051] Specifically, the second adhesive film layer 52 can be made of POE, EVA (Polyethylene vinyl acetate), or PVB (Polyvinyl Butyral) and the like.

[0052] Referring to Figure 3 In some embodiments, the photovoltaic tile 100 includes a first adhesive film layer 51 and a second adhesive film layer 52, the first adhesive film layer 51 is located between the substrate 33 and the cell sheet 10, and the second adhesive film layer 52 is located between the cell sheet 10 and the back plate 40. Along the thickness direction of the composite panel 30, the projection of the first adhesive film layer 51 and the second adhesive film layer 52 on the cell sheet 10 coincides with the outer contour of the cell sheet 10. In this way, the first adhesive film layer 51 and the second adhesive film layer 52 sufficiently cover the surface of the cell sheet 10, ensuring the stability of the bonding.

[0053] Specifically, the contour shape and size of the first adhesive film layer 51 and the second adhesive film layer 52 are consistent with the outer contour and corresponding size of the cell sheet 10. The outer contour of the cell sheet 10 can be square, triangular, polygonal, circular, semicircular, elliptical, or other irregular shapes, which are not limited in the present application.

[0054] In some embodiments, the fluorine-containing adhesive film 31, the cutoff layer 32, the substrate 33, the first adhesive film layer 51, the cell sheet 10, the second adhesive film layer 52, and the back plate 40 can be sequentially stacked and pressed into the photovoltaic tile 100 as a whole. The composite panel 30 and the back plate 40 are matched with the shape and size of the cell sheet 10. For example, the cell sheet 10 is in a square flat structure, and the substrate 33 and the back plate 40 are square flat plates matched with the size of the cell sheet 10.

[0055] Referring to Figure 4 and Figure 5In some embodiments, the photovoltaic tile 100 comprises a plurality of cell pieces 10 arranged along at least one direction, and solder strips 20, wherein two adjacent cell pieces 10 along a first direction are partially stacked;

[0056] The solder strips 20 are used to electrically connect the plurality of cell pieces 10, and the solder strips 20 can be made of silver, tin or alloy, etc. to improve the electrical conductivity of the solder strips 20. The first solder segments 21 of the solder strips 20 can be welded to the cell pieces 10, and the number of the second solder segments 22 is less than the number of the first solder segments 21 by one, for example, when the number of the first solder segments 21 is two, the number of the second solder segments 22 is one. The first solder segments 21 and the second solder segments 22 can be of an integral structure.

[0057] In this way, the solder strips 20 can electrically connect the plurality of cell pieces 10, the second solder segments 22 are located between the two adjacent cell pieces 10 and span the stacking area 11 of the two adjacent cell pieces 10, and the second solder segments 22 are flat, which increases the contact area of the second solder segments 22 with the cell pieces 10, reduces the pressure on the cell pieces 10, and thus reduces defects such as cracks of the cell pieces 10.

[0058] The plurality of cell pieces 10 can be arranged in a tiled manner. The partially stacked arrangement of the two adjacent cell pieces 10 means that the two adjacent cell pieces 10 have an overlapping area in the thickness direction. The number of the cell pieces 10 can be set according to specific requirements, for example, the number can be two, three, ten, fifty, etc.

[0059] The solder strips 20 are used to electrically connect the plurality of cell pieces 10, and the solder strips 20 can be made of silver, tin or alloy, etc. to improve the electrical conductivity of the solder strips 20. The first solder segments 21 of the solder strips 20 can be welded to the cell pieces 10, and the number of the second solder segments 22 is less than the number of the first solder segments 21 by one, for example, when the number of the first solder segments 21 is two, the number of the second solder segments 22 is one. The first solder segments 21 and the second solder segments 22 can be of an integral structure.

[0060] The stacking area 11 of the two adjacent cell pieces 10 means that the two adjacent cell pieces 10 have an overlapping area. The second solder segments 22 span the stacking area 11, which means that the ends of the second solder segments 22 along the first direction D1 both extend out of the stacking area 11. The second solder segments 22 are flat, which means that the width of the second solder segments 22 is greater than the height of the second solder segments 22.

[0061] It should be noted that the surface of the second solder segments 22 with the largest area faces the cell pieces 10 or is in contact with the cell pieces 10.

[0062] Please refer to Figure 5In some embodiments, the battery piece 10 comprises a first surface 12 and a second surface 13 opposite to each other, and in two adjacent battery pieces 10, the first surface 12 of one of the battery pieces 10 is provided with the first welding section 21, and the second surface 13 of the other battery piece 10 is provided with the first welding section 21.

[0063] In this way, in the case of partial layering of two adjacent battery pieces 10, a step structure is formed between the two battery pieces 10, and therefore, the welding strip 20 is connected to the battery piece 10 in a staggered manner, so that the welding strip 20 is kept at a height as a whole, which can improve the stability of the connection between the welding strip 20 and the battery piece 10, and the connection process of the welding strip 20 is easy to implement.

[0064] As shown in FIG. 1, the first surface 12 of the left battery piece 10 is provided with the first welding section 21, and the second surface 13 of the right battery piece 10 is provided with the second welding section 22. Figure 5 As shown in FIG. 1, the first surface 12 of the left battery piece 10 is provided with the first welding section 21, and the second surface 13 of the right battery piece 10 is provided with the second welding section 22.

[0065] Figure 4 In some embodiments, along the first direction D1, the two adjacent battery pieces 10 are connected by a plurality of welding strips 20, and the plurality of welding strips 20 are arranged in a second direction D2 intersecting the first direction D1. In this way, the plurality of welding strips 20 can improve the overcurrent capacity of the electrical connection between the two battery pieces 10, and when one of the welding strips 20 is broken, the other welding strips 20 can still electrically connect the two battery pieces 10, thereby improving the reliability of the photovoltaic tile 100. In the embodiments of the present application, the first direction D1 and the second direction D2 are arranged perpendicularly.

[0066] In some embodiments, the first welding section 21 has a circular cross-section. In this way, the first welding section 21 is easy to form, and the manufacturing cost of the photovoltaic tile 100 can be reduced. Specifically, an entire circular strip can be used, and part of the circular strip is flattened, so that the flattened part of the circular strip forms the second welding section 22, and the part not flattened forms the first welding section 21.

[0067] The photovoltaic assembly (not shown in the figure) of the embodiments of the present application comprises a plurality of photovoltaic tiles 100, and the plurality of photovoltaic tiles 100 are electrically connected. In this way, the electrical connection of the plurality of photovoltaic tiles 100 can improve the power generation of the photovoltaic assembly.

[0068] In the description of the embodiments of the present application, the terms "first", "second" are only used for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited. ​

[0069] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0070] Although the embodiments of the present application have been shown and described above, it should be understood by those skilled in the art that the above embodiments are exemplary and cannot be understood as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A photovoltaic tile, characterized in that: The photovoltaic tile comprises: A composite panel comprising a fluorine-containing adhesive film, a cutoff layer, and a substrate stacked in sequence, wherein the fluorine-containing adhesive film and the substrate are both light-transmitting, and the cutoff layer is configured to block light in the 10 mm to 400 mm wavelength band and transmit visible light; a back plate, the back plate being a metal plate; and A battery cell is located between the substrate and the backplane.

2. The photovoltaic tile according to claim 1, characterized in that: The battery cell is located within the projection range of the back plate along the thickness direction on the plane where the battery cell is located.

3. The photovoltaic tile according to claim 1, characterized in that: The battery cell is located within the projection range of the substrate along the thickness direction of the plane where the battery cell is located, and the fluorine-containing adhesive film completely covers the surface of the substrate away from the battery cell.

4. The photovoltaic tile according to claim 1, characterized in that: The fluorine-containing adhesive film is at least one of an ETFE adhesive film, a PVDF adhesive film and a PVF adhesive film, and the thickness of the fluorine-containing adhesive film ranges from 20 μm to 40 μm.

5. The photovoltaic tile according to claim 1, characterized in that: The photovoltaic tile includes a first adhesive film layer, which is located between the substrate and the battery cell, and is a transparent plastic film.

6. The photovoltaic tile according to claim 1, characterized in that: The photovoltaic tile includes a second adhesive film layer, and the second adhesive film layer is located between the battery cell and the back plate.

7. The photovoltaic tile according to claim 1, characterized in that: The photovoltaic tile includes a first adhesive film layer and a second adhesive film layer, the first adhesive film layer is located between the substrate and the battery cell, and the second adhesive film layer is located between the battery cell and the backboard. Along the thickness direction of the composite panel, the projections of the first adhesive film layer and the second adhesive film layer on the battery cell coincide with the outer contour of the battery cell.

8. The photovoltaic tile according to claim 1, characterized in that: The photovoltaic tile comprises a plurality of cells and welding strips, wherein the plurality of cells are arranged along at least one direction, and two adjacent cells along a first direction are partially stacked; The welding ribbon connects two adjacent battery cells along a first direction. The welding ribbon includes multiple first welding segments and at least one second welding segment. The first welding segment is connected to a corresponding battery cell. The second welding segment connects two adjacent first welding segments along the first direction. The second welding segment is located between the two adjacent battery cells and spans the stacking area of ​​the two adjacent battery cells. The second welding segment is flat.

9. The photovoltaic tile according to claim 8, characterized in that: The battery cell includes a first surface and a second surface facing each other. Among two adjacent battery cells, the first surface of one of the battery cells is provided with the first welding section, and the second surface of the other battery cell is provided with the first welding section.

10. A photovoltaic module, characterized in that: The photovoltaic tiles according to any one of claims 1 to 9 are electrically connected.

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