Photovoltaic tile

Abstract

The utility model belongs to photovoltaic power generation technical field discloses a photovoltaic tile, and the photovoltaic tile includes tile body and the power generation unit of clamping in tile body, and tile body has the upper extension, the plane part and the lower extension that connect in proper order along the first direction, the plane part spreads along the first direction, and along the direction of deviating from the plane part, the upper extension is curved and extends upwards relative to the plane part, and the lower extension is curved and extends downwards relative to the plane part, and tile body is equipped with the power generation area, and the power generation unit is located in the power generation area, and the power generation area is worn and is equipped with the lower extension in the plane part, and the power generation area and the lower extension far from the side edge of the plane part interval setting, and the power generation area and the lower extension far from the side edge of the plane part between the upper extension are equipped with the first interval area, and the power generation area and the lower extension far from the side edge of the plane part between the lower extension form the second interval area, and the width of first interval area is greater than the width of second interval area, the photovoltaic tile provided by the utility model can improve the power generation efficiency, and reduce the risk of hidden crack of power generation unit.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic power generation technology, and in particular to photovoltaic tiles. Background Technology

[0002] Building-integrated photovoltaics (BIPV) refers to the installation of photovoltaic modules on or around a building to provide electricity. These modules also serve as a functional part of the building structure, replacing some traditional building structures such as roof panels, tiles, windows, building facades, and awnings. BIPV modules can also be made into multifunctional building components to achieve even more functions.

[0003] With the development of the photovoltaic industry, curved photovoltaic tiles, which can replace traditional roof tiles, are gradually gaining market favor. The development of curved photovoltaic tiles is also maturing. As a new type of building material, curved photovoltaic tiles combine the protection of roof tiles with the function of power generation.

[0004] Currently, because multiple curved photovoltaic tiles are usually installed by overlapping each other, the solar cells can only be installed in the non-overlapping areas, resulting in limited power generation efficiency. Furthermore, the curved arrangement increases the risk of microcracks in the solar cells.

[0005] Therefore, there is an urgent need for a photovoltaic tile to solve the aforementioned technical problems. Utility Model Content

[0006] The purpose of this invention is to provide a photovoltaic tile that improves power generation efficiency and reduces the risk of microcracks in the power generation unit.

[0007] To achieve this objective, the present invention adopts the following technical solution:

[0008] A photovoltaic tile is provided, comprising: a tile body and a power generation unit sandwiched in the tile body. The tile body has an upper extension, a flat portion, and a lower extension connected sequentially along a first direction. The flat portion extends along the first direction. In a direction away from the flat portion, the upper extension bends upward relative to the flat portion, and the lower extension bends downward relative to the flat portion. The tile body has a power generation area, and the power generation unit is disposed in the power generation area. The power generation area passes through the flat portion and the lower extension, and the power generation area is spaced apart from the side edge of the lower extension away from the flat portion. A first gap is provided between the power generation area and the side edge of the upper extension away from the flat portion, and a second gap is formed between the power generation area and the side edge of the lower extension away from the flat portion. The width of the first gap is greater than the width of the second gap.

[0009] As an optional technical solution, the photovoltaic tile also includes a junction box, which is installed on the upper surface of the upper extension. The upper extension has a wiring hole, and the junction box is electrically connected to the power generation unit through a busbar passing through the wiring hole. When the photovoltaic tile is connected to another photovoltaic tile, the upper extension overlaps the lower extension of the other photovoltaic tile and forms a shading space between them. The junction box is located within the shading space.

[0010] As an optional technical solution, the tile body includes a front cover plate and a rear cover plate stacked along the thickness direction, the power generation unit is fixedly installed between the front cover plate and the rear cover plate, and the wiring hole is opened in the front cover plate.

[0011] As an optional technical solution, the tile body further includes a first adhesive film layer and a second adhesive film layer. Along the thickness direction of the tile body, the first adhesive film layer is disposed between the front cover plate and the power generation unit to bond the front cover plate and the power generation unit, and the second adhesive film layer is disposed between the rear cover plate and the power generation unit to bond the rear cover plate and the power generation unit.

[0012] As an optional technical solution, in the first direction, the width of the upper extension and the width of the lower extension do not exceed half the width of the planar portion.

[0013] As an optional technical solution, the first interval region extends through the upper extension along the first direction;

[0014] The width of the second interval region in the first direction is smaller than that of the lower extension.

[0015] As an optional technical solution, the width 'a' of the first interval region is 30mm to 40mm; and / or

[0016] The width b of the second interval is 10mm to 20mm.

[0017] As an optional technical solution, the power generation area and the tile body are spaced apart on both sides along the second direction, a third interval area is provided between the power generation area and one side edge of the tile body along the second direction, and a fourth interval area is provided between the power generation area and the other side edge of the tile body along the second direction, wherein the first direction is perpendicular to the second direction.

[0018] As an optional technical solution, both the upper extension and the lower extension are configured as arc-shaped structures, and the arc of the upper extension is equal to the arc and arc length of the lower extension.

[0019] As an optional technical solution, the power generation unit includes at least two battery strings, and the battery strings include multiple battery cells;

[0020] The adjacent battery strings are spaced apart; or

[0021] The adjacent battery cells are spaced apart or partially overlapped.

[0022] The beneficial effects of this utility model are:

[0023] The photovoltaic tile provided by this utility model has an upper extension and a lower extension on both sides of the flat portion of the tile body. The upper and lower extensions are curved upward and downward, respectively, to facilitate overlapping installation with other photovoltaic tiles. A power generation unit is sandwiched within the tile body, and the tile body has a power generation area for installing the power generation unit. The power generation area extends through the flat portion and the lower extension. The power generation units are distributed not only on the flat portion but also to the lower extension to obtain a larger power generation area and improve power generation efficiency. Furthermore, by setting a flat portion, a first interval area between the power generation area and the side edge of the upper extension, and a second interval area between the power generation area and the side edge of the lower extension, the size of the curved distribution area of ​​the power generation units is controlled, thereby reducing the risk of microcracks in the power generation units. Moreover, the width of the first interval area is greater than the width of the second interval area, providing sufficient overlapping space in the upper extension to prevent the power generation unit from being blocked by another photovoltaic tile above, while fully utilizing the space in the lower extension to increase the light-receiving area of ​​the power generation unit and improve power generation efficiency. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the photovoltaic tile provided by this utility model;

[0025] Figure 2 This is an exploded structural diagram of the photovoltaic tile provided by this utility model;

[0026] Figure 3 This is a schematic diagram of the installation position of the power generation unit provided by this utility model;

[0027] Figure 4 This is a top view of the installation position of the power generation unit provided by this utility model;

[0028] Figure 5 This is a schematic diagram showing the photovoltaic tiles provided by this utility model during overlapping installation;

[0029] Figure 6 This is a schematic diagram of the structure of the front cover plate provided by this utility model.

[0030] In the picture:

[0031] 10. Tile body; 11. Front cover plate; 111. Wiring hole; 112. Mounting hole; 12. Rear cover plate; 13. First adhesive film layer; 14. Second adhesive film layer; 101. Flat part; 102. Upper extension part; 103. Lower extension part;

[0032] 20. Power generation unit; 21. Battery string;

[0033] 30. Junction box; 40. Shelter space;

[0034] 1. Power generation area; 2. First bay area; 3. Second bay area; 4. Third bay area; 5. Fourth bay area. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0036] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] 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.

[0038] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element 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. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0039] Please refer to Figures 1-6This embodiment provides a photovoltaic tile, which includes a transparent or semi-transparent tile body 10 and a power generation unit 20 sandwiched in the tile body 10. The tile body 10 has an upper extension 102, a flat part 101 and a lower extension 103 connected in sequence along a first direction (i.e., the X direction in the figure). The flat part 101 is spread out along the first direction. Along the direction away from the flat part 101, the upper extension 102 bends upward relative to the flat part 101 and the lower extension 103 bends downward relative to the flat part 101. The size and shape of the upper extension 102 and the lower extension 103 are adapted to each other. When multiple photovoltaic tiles are installed, the photovoltaic tile overlaps with another adjacent photovoltaic tile. The upper extension 102 overlaps below the lower extension 103 of another photovoltaic tile and is then fixed to each other by screws, buckles and other structures.

[0040] For further details, please refer to Figures 2-5 The tile body 10 is provided with a power generation area 1, and a power generation unit 20 is provided in the power generation area 1. The power generation area 1 passes through the flat part 101 and the lower extension part 103, and the power generation area 1 and the lower extension part 103 are spaced apart from the side edges away from the flat part 101.

[0041] Specifically, the photovoltaic tile provided in this embodiment has an upper extension 102 and a lower extension 103 on both sides of the flat portion 101 of the tile body 10. The upper extension 102 and the lower extension 103 are bent upward and downward respectively to overlap with other photovoltaic tiles. A power generation unit 20 is sandwiched inside the tile body 10. The tile body 10 has a power generation area 1 for installing the power generation unit 20. The power generation area 1 passes through the flat portion 101 and the lower extension 103. The power generation unit 20 is not only distributed on the flat portion 101, but also distributed to the lower extension 103 to obtain a larger power generation area and improve power generation efficiency. Furthermore, by setting the flat portion 101 and the side edge spacing of the power generation area 1 and the lower extension 103, the area size of the power generation unit 20 is controlled to be distributed in a curved manner, thereby reducing the risk of hidden cracks in the power generation unit 20.

[0042] For example, in the first direction, the width of the upper extension 102 and the width of the lower extension 103 are both no more than half the width of the planar portion 101. Specifically, the sum of the widths of the upper extension 102 and the lower extension 103 does not exceed the width of the planar portion 101, that is, the planar portion 101 occupies at least half the width of the tile body 10, thereby providing sufficient planar installation space for the power generation unit 20, increasing the installation area, and further improving power generation efficiency and reducing the risk of microcracks. In this embodiment, the width of the upper extension 102 is less than 1 / 6 of the width of the planar portion 101, and the width of the lower extension 103 is less than 1 / 6 of the width of the planar portion 101.

[0043] For example, in the first direction, the width of the upper extension 102 and the width of the lower extension 103 are equal.

[0044] For example, please refer to Figures 1-3 Both the upper extension 102 and the lower extension 103 are configured as arc surfaces, and the arc length of the upper extension 102 and the arc length of the lower extension 103 are equal. The radius of curvature of the upper extension 102 and the lower extension 103 can be selected from 110mm to 400mm. The two are centrally symmetrical about the planar part 101 to facilitate the overlap between two adjacent photovoltaic tiles.

[0045] For example, please refer to Figure 2 and Figure 3 The power generation zone 1 extends through the flat portion 101 in the first direction. A first interval zone 2 is provided between the power generation zone 1 and the side edge of the upper extension 102 away from the flat portion 101. The first interval zone 2 extends through the upper extension 102 in the first direction. A second interval zone 3 is formed between the power generation zone 1 and the side edge of the lower extension 103 away from the flat portion 101. The width of the second interval zone 3 in the first direction is smaller than the width of the lower extension 103. Specifically, the power generation unit 20 completely fills the power generation zone 1. By setting the first interval zone 2 and the second interval zone 3, the power generation unit 20 and the two side edges at both ends of the tile body 10 in the first direction are spaced apart. On the one hand, this avoids the power generation unit 20 being laid in the first interval zone 2 where the upper extension 102 is located, and avoids the power generation unit 20 being blocked by another photovoltaic tile on the upper layer. On the other hand, it controls the area size of the power generation unit 20 in the lower extension 103, reducing the risk of microcracks. Furthermore, the width of the first interval 2 is greater than the width of the second interval 3, and sufficient overlapping space is reserved in the upper extension 102 to prevent the power generation unit 20 from being blocked by another photovoltaic tile above. At the same time, the space of the lower extension 103 is fully utilized to increase the light-receiving area of ​​the power generation unit 20 and improve the power generation efficiency.

[0046] For example, please refer to Figure 4 In the first direction, the width a of the first interval 2 is 30mm to 40mm, preferably 40mm.

[0047] For example, in the first direction, the width b of the second interval 3 is less than half the width of the lower extension 103.

[0048] For example, please refer to Figure 4 In the first direction, the width b of the second interval 3 is 10mm to 20mm, preferably 10mm.

[0049] For example, please refer to Figure 4The power generation area 1 and the tile body 10 are spaced apart on both sides along the second direction (i.e., the Y direction in the figure). A third interval area 4 is provided between the power generation area 1 and the tile body 10 on one side along the second direction, and a fourth interval area 5 is provided between the power generation area 1 and the tile body 10 on the other side along the second direction. The first direction is perpendicular to the second direction. The purpose of setting the third interval area 4 and the fourth interval area 5 is to leave a gap for the overlap between two adjacent photovoltaic tiles along the second direction.

[0050] For example, please refer to Figure 4 In the second direction, the width c of the third interval 4 is 10mm to 15mm, preferably 10mm.

[0051] For example, please refer to Figure 4 In the second direction, the width d of the fourth interval 5 is 40mm to 50mm.

[0052] For example, please refer to Figure 2 The tile body 10 includes a front cover plate 11 and a rear cover plate 12 stacked along the thickness direction. The power generation unit 20 is fixedly installed between the front cover plate 11 and the rear cover plate 12. Both the front cover plate 11 and the rear cover plate 12 are configured as irregular plate structures combining planar structure and hyperboloid structure, and are the same as the extension path of the tile body 10 along the first direction.

[0053] For example, the thickness of the front cover 11 is 2 mm to 6 mm, and the thickness of the rear cover 12 is 2 mm to 6 mm.

[0054] For example, please refer to Figure 1 and Figure 6 The upper extension 102 is provided with mounting holes 112, which are specifically located at the corners of the front cover plate 11, so as to facilitate the fixing of the photovoltaic tiles to the roof structure during installation.

[0055] For example, the front cover 11 is made of materials such as tempered glass, resin, and PVC (polyvinyl chloride) plastic to ensure structural strength and light transmission performance.

[0056] For example, the back cover 12 is made of materials such as tempered glass, resin, or PVC plastic to ensure structural strength and light transmission. Alternatively, the back cover 12 can also be made of flexible materials such as PET (polyethylene terephthalate).

[0057] For example, please refer to Figure 2The tile body 10 also includes a first adhesive film layer 13 and a second adhesive film layer 14. Along the thickness direction of the tile body 10, the first adhesive film layer 13 is disposed between the front cover plate 11 and the power generation unit 20 to bond the front cover plate 11 and the power generation unit 20. The second adhesive film layer 14 is disposed between the rear cover plate 12 and the power generation unit 20 to bond the rear cover plate 12 and the power generation unit 20.

[0058] For example, both the first adhesive film layer 13 and the second adhesive film layer 14 can be made of materials such as EVA (ethylene-vinyl acetate copolymer), POE (polyolefin elastomer), PVB (polyvinyl butyral), and silicone.

[0059] For example, the power generation unit 20 includes at least two battery strings 21 that are electrically connected to each other via busbars, and the battery strings 21 include a plurality of battery cells that are electrically connected to each other.

[0060] For example, please refer to Figures 2-4 The two adjacent battery strings 21 are spaced apart, and the size of the interval e between the two adjacent battery strings 21 can be selected from 1mm to 5mm.

[0061] For example, adjacent solar cells may be spaced apart or partially overlapped; that is, adjacent solar cells may be stacked or spaced apart. Optionally, the overlap width between adjacent solar cells may be 0 to 0.5 mm, or the spacing between adjacent solar cells may be 0 mm to 2 mm.

[0062] For example, the solar cells are crystalline silicon solar cells or thin-film solar cells.

[0063] For example, please refer to Figure 1 , Figures 2-5 The photovoltaic tile also includes a junction box 30, which is electrically connected to the power generation unit 20 and connected to an external energy storage device or power consumption device via cables. The junction box 30 can be a split junction box or a single junction box with cables exiting from both sides. Specifically, the junction box 30 is installed on the upper surface of the upper extension 102, which has a wiring hole 111 located on the front cover plate 11. The junction box 30 is electrically connected to the power generation unit 20 via a busbar passing through the wiring hole 111. When the photovoltaic tile is connected to another photovoltaic tile, the upper extension 102 overlaps the lower extension 103 of the other photovoltaic tile, forming a shading space 40 between them, and the junction box 30 is located within the shading space 40.

[0064] Since the junction box 30 is installed on the upper surface of the tile body 10, it is easy to install and has increased compatibility with roofs, allowing installation on both purlin roofs and flat roofs. Furthermore, the overlap width between the lower extension 103 and the upper extension 102 can be selected from 35mm to 40mm, creating a sheltered space 40 with good waterproofing performance. Rainwater flowing down from the lower extension 103 can flow downwards along the upper surface of the upper extension 102, eliminating the need for a separate waterproofing layer on the roof and preventing leaks and water ingress into the junction box 30. Additionally, the sheltered space 40 conceals the junction box 30 and cables, improving aesthetics.

[0065] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A photovoltaic tile, characterized in that, The device includes a tile body and a power generation unit sandwiched within the tile body. The tile body has an upper extension, a flat portion, and a lower extension connected sequentially along a first direction. The flat portion extends along the first direction. In a direction away from the flat portion, the upper extension bends upward relative to the flat portion, and the lower extension bends downward relative to the flat portion. The tile body has a power generation area, and the power generation unit is disposed in the power generation area. The power generation area passes through the flat portion and the lower extension, and the power generation area is spaced apart from the side edge of the lower extension away from the flat portion. A first gap is provided between the power generation area and the side edge of the upper extension away from the flat portion, and a second gap is formed between the power generation area and the side edge of the lower extension away from the flat portion. The width of the first gap is greater than the width of the second gap.

2. The photovoltaic tile according to claim 1, characterized in that, The photovoltaic tile also includes a junction box, which is installed on the upper surface of the upper extension. The upper extension has a wiring hole, and the junction box is electrically connected to the power generation unit through a busbar passing through the wiring hole. When the photovoltaic tile is connected to another photovoltaic tile, the upper extension overlaps the lower extension of the other photovoltaic tile and forms a shading space between them. The junction box is located within the shading space.

3. The photovoltaic tile according to claim 2, characterized in that, The tile body includes a front cover plate and a rear cover plate stacked along the thickness direction, the power generation unit is fixedly installed between the front cover plate and the rear cover plate, and the wiring hole is opened in the front cover plate.

4. The photovoltaic tile according to claim 3, characterized in that, The tile body further includes a first adhesive film layer and a second adhesive film layer. Along the thickness direction of the tile body, the first adhesive film layer is disposed between the front cover plate and the power generation unit to bond the front cover plate and the power generation unit. The second adhesive film layer is disposed between the rear cover plate and the power generation unit to bond the rear cover plate and the power generation unit.

5. The photovoltaic tile according to any one of claims 1-4, characterized in that, In the first direction, the width of the upper extension and the width of the lower extension both do not exceed half the width of the planar portion.

6. The photovoltaic tile according to any one of claims 1-4, characterized in that, The first interval region extends through the upper extension along the first direction; The width of the second interval region in the first direction is smaller than the width of the lower extension.

7. The photovoltaic tile according to any one of claims 1-4, characterized in that, The width 'a' of the first interval is 30 mm to 40 mm; and / or The width b of the second interval is 10mm to 20mm.

8. The photovoltaic tile according to any one of claims 1-4, characterized in that, The power generation area and the tile body are spaced apart on both sides along the second direction. A third interval is provided between the power generation area and one side edge of the tile body along the second direction. A fourth interval is provided between the power generation area and the other side edge of the tile body along the second direction. The first direction is perpendicular to the second direction.

9. The photovoltaic tile according to any one of claims 1-4, characterized in that, Both the upper extension and the lower extension are configured as arc surfaces, and the arc of the upper extension is equal to the arc and arc length of the lower extension.

10. The photovoltaic tile according to any one of claims 1-4, characterized in that, The power generation unit includes at least two battery strings, and each battery string includes multiple battery cells. The adjacent battery strings are spaced apart; or The adjacent battery cells are spaced apart or partially overlapped.

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