Photovoltaic tile substrate and photovoltaic tile

Abstract

The utility model is suitable for the photovoltaic technology field, and provides a photovoltaic tile substrate and a photovoltaic tile, the photovoltaic tile substrate comprises a rectangular flat plate part, the left side and the right side of the flat plate part are respectively connected with a first lap joint part and a second lap joint part; the first lap joint part comprises a raised first wave crest and a raised second wave crest, and the second wave crest is arranged between the first wave crest and the flat plate part; the second lap joint part comprises a third wave crest and a fourth wave crest which are raised, and the third wave crest is arranged between the fourth wave crest and the flat plate part; the outer wall of the second lap joint part is matched with the inner wall of the first lap joint part, a groove is formed in the connecting position of the third wave crest and the antinode close to one side of the flat plate, and the length of the antinode, away from one side of the flat plate, of the first wave crest is larger than the depth of the groove. And when the two photovoltaic tile substrates are spliced, the grooves and the antinodes enclose to form a cavity to form a partition, so that the capillary effect is reduced, and the waterproof performance of the spliced photovoltaic tile substrates is further enhanced.

Description

Technical Field

[0001] The utility model belongs to the technical field of photovoltaics, and particularly relates to a photovoltaic tile substrate and a photovoltaic tile. Background Art

[0002] The integration of photovoltaics and building components is a major direction for the development of distributed photovoltaics in the coming period. As the main structural component in photovoltaic building integration products, the photovoltaic substrate plays a decisive role in the physical performance of the system.

[0003] For common photovoltaic tiles integrated with profiled steel sheets, the upper and lower lap joints are usually flat lap joints, with low lap stiffness and easy deformation, resulting in poor appearance and increased risk of water leakage.

[0004] For ordinary photovoltaic tiles, the left and right lap joints are usually curled edges or simple trapezoidal lap joints, which cannot be disassembled without damage or have poor waterproof performance. Summary of the Utility Model

[0005] The utility model provides a photovoltaic tile substrate and a photovoltaic tile, aiming to solve the problems that existing photovoltaic tiles cannot be disassembled without damage or have poor waterproof performance.

[0006] The utility model is implemented as follows. A photovoltaic tile substrate includes a rectangular flat plate portion, and a first lap joint and a second lap joint are respectively connected to the left and right sides of the flat plate portion;

[0007] The first lap joint includes a raised first wave crest and a second wave crest, and the second wave crest is located between the first wave crest and the flat plate portion;

[0008] The second lap joint includes a raised third wave crest and a fourth wave crest, and the third wave crest is located between the fourth wave crest and the flat plate portion;

[0009] The outer wall of the second lap joint is adapted to the inner wall of the first lap joint. A groove is provided at the connection position between the third wave crest and the wave belly close to the flat plate side, and the length of the wave belly on the side of the first wave crest away from the flat plate is greater than the depth of the groove.

[0010] Optionally, the length by which the wave belly on the side of the first wave crest away from the flat plate exceeds the groove is less than or equal to 5 mm.

[0011] Optionally, the cross-section of the first lap joint is trapezoidal in shape, and the cross-section of the second lap joint is trapezoidal in shape.

[0012] Optionally, the trapezoid is a regular trapezoid.

[0013] Optionally, the flat plate portion is rectangular, and the left and right sides are the long sides of the rectangle.

[0014] Optionally, an upper overlapping portion is provided at the upper end of the flat plate portion, and the upper overlapping portion includes a flanging with a warping direction the same as the bulging direction of the first overlapping portion;

[0015] A lower overlapping portion is provided at the lower end of the flat plate portion, and the lower overlapping portion includes a flanging with a warping direction opposite to the bulging direction of the first overlapping portion.

[0016] Optionally, the warping angles and lengths of the upper overlapping portion and the lower overlapping portion are equal.

[0017] The present utility model further provides a photovoltaic tile, which includes the above-mentioned photovoltaic tile substrate, and a photovoltaic substrate is provided on the flat plate portion.

[0018] The beneficial effects achieved by the present utility model are as follows: Since two wave peaks are provided on both sides of the flat plate portion for the first overlapping portion and the second overlapping portion, the double-wave peak structure makes the splicing between two photovoltaic tile substrates more firm, and enhances the waterproof performance after the splicing of the photovoltaic tile substrates. A groove is provided at the connection position between the third wave peak and the wave belly on the side close to the flat plate of the third wave peak. The length of the wave belly on the side far from the flat plate of the first wave peak is greater than the depth of the groove. When two photovoltaic tile substrates are spliced, a cavity is formed by the groove and the wave belly, forming a partition, reducing the capillary effect, and further enhancing the waterproof performance after the splicing of the photovoltaic tile substrates. Description of the Drawings

[0019] Figure 1 is a schematic structural view of the photovoltaic tile substrate provided by the present utility model;

[0020] Figure 2 is an enlarged view of part A provided by the present utility model;

[0021] Figure 3 is a schematic view of the overlapping of one perspective of the photovoltaic tile substrate provided by the present utility model;

[0022] Figure 4 is a schematic view of the overlapping of another perspective of the photovoltaic tile substrate provided by the present utility model.

[0023] Description of the Reference Numerals:

[0024] 100, photovoltaic tile substrate; 101, flat plate portion; 102, first overlapping portion; 1021, first wave peak; 1022, second wave peak; 103, second overlapping portion; 1031, third wave peak; 1032, fourth wave peak; 104, upper overlapping portion; 105, lower overlapping portion; 106, groove. Detailed Embodiments

[0025] In order to make the objectives, technical solutions and advantages of the present utility model more clear and understandable, the present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present utility model, and should not be construed as a limitation to the present utility model. In addition, it should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0026] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "left", "right", "horizontal", "top", "bottom", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0027] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0028] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral connection; it can be a mechanical connection, an electrical connection or a connection capable of mutual communication; it can be directly connected or indirectly connected through an intermediate medium, and it can be the connection inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under" and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the horizontal height of the first feature is less than that of the second feature.

[0030] The following disclosure provides many different embodiments or examples for implementing different structures of the present utility model. To simplify the disclosure of the present utility model, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present utility model. In addition, the present utility model may repeat reference numerals and / or reference letters in different examples. Such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present utility model provides examples of various specific processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0031] Two crests are provided on both sides of the flat part of the present utility model for the first overlapping part and the second overlapping part. The double-crest structure makes the splicing between two photovoltaic tile substrates more firm and enhances the waterproof performance after the splicing of the photovoltaic tile substrates. A groove is provided at the connection position between the third crest and the wave belly on the side close to the flat part of the third crest. The length of the wave belly on the side far from the flat part of the first crest is greater than the depth of the groove. When two photovoltaic tile substrates are spliced, a cavity is formed by the groove and the wave belly, forming a partition, reducing the capillary effect, and further enhancing the waterproof performance after the splicing of the photovoltaic tile substrates.

[0032] Example 1

[0033] As Figure 1 and Figure 2 shown, this embodiment provides a photovoltaic tile substrate 100, including a rectangular flat part 101, and the left and right sides of the flat part 101 are respectively connected to a first overlapping part 102 and a second overlapping part 103;

[0034] The first overlapping part 102 includes a raised first crest 1021 and a second crest 1022, and the second crest 1022 is placed between the first crest 1021 and the flat part 101;

[0035] The second overlapping part 103 includes a raised third crest 1031 and a fourth crest 1032, and the third crest 1031 is placed between the fourth crest 1032 and the flat part 101;

[0036] The outer wall of the second overlapping portion 103 is adapted to the inner wall of the first overlapping portion 102. A groove 106 is provided at the connection position between the third wave crest 1031 and the wave belly near the flat plate side. The length of the wave belly on the side of the first wave crest 1021 away from the flat plate is greater than the depth of the groove 106.

[0037] The photovoltaic tile substrate 100 is a building component, and its installation method is similar to that of tiles. A number of photovoltaic tile substrates 100 need to be spliced. The first overlapping portion 102 and the second overlapping portion 103 are respectively arranged on the left and right sides of the flat plate portion 101. Specifically, the first overlapping portion 102 can be arranged on the left side of the flat plate portion 101, and the second overlapping portion 103 can be arranged on the right side of the flat plate portion 101; or the second overlapping portion 103 can be arranged on the left side of the flat plate portion 101, and the first overlapping portion 102 can be arranged on the right side of the flat plate portion 101.

[0038] The first overlapping portion 102 includes a raised first wave crest 1021 and a second wave crest 1022, and the second overlapping portion 103 includes a raised third wave crest 1031 and a fourth wave crest 1032. The first wave crest 1021, the second wave crest 1022, the third wave crest 1031 and the fourth wave crest 1032 are arranged in sequence.

[0039] It can be understood that if the raised portion is approximately regarded as a waveform, the highest point of the raised portion, that is, the top of the waveform, is the wave crest, and the lowest point of the raised portion, that is, the bottom of the waveform, is the wave trough. There must be a wave trough between two adjacent wave crests. Except for the wave crest and the wave trough, the protruding part that constitutes the raised portion is the wave belly.

[0040] As Figure 3 shown, the outer wall of the second overlapping portion 103 is adapted to the inner wall of the first overlapping portion 102. When two photovoltaic tile substrates 100 are spliced left and right, the first overlapping portion 102 of one photovoltaic tile substrate 100 is buckled on the second overlapping portion 103 of the other photovoltaic tile substrate 100, and the outer wall of the second overlapping portion 103 is in contact with the inner wall of the first overlapping portion 102.

[0041] Both the buckled first overlapping portion 102 and the second overlapping portion 103 have two wave crests respectively. The double-wave-crest structure increases the contact area of the overlapping portion, makes the splicing between two photovoltaic tile substrates 100 more firm, can better withstand external loads (such as wind load, snow load, etc.), and improves the strength and stability of the overall structure. The double-wave-crest structure can also form multiple lines of defense, increase the complexity of the water flow path, reduce the possibility of water penetrating through the overlapping portion, thereby enhancing the waterproof performance of the photovoltaic tile substrate 100 and ensuring the reliability of the system under various weather conditions.

[0042] A groove 106 is provided at the connection position between the third peak 1031 and the antinode on the side of the third peak 1031 close to the flat plate. The length of the antinode on the side of the first peak 1021 away from the flat plate is greater than the depth of the groove 106. As Figure 2 shown, when two photovoltaic tile substrates 100 are spliced left and right, the first peak 1021 of one photovoltaic tile substrate 100 covers the third peak 1031 of the other photovoltaic tile substrate 100, and the antinode on the left side of the first peak 1021 of one photovoltaic tile substrate 100 covers the groove 106 of the other photovoltaic tile substrate 100, and this antinode can completely cover the groove 106, and the two enclose a cavity. The existence of this cavity plays an isolation role to prevent moisture from entering the cavity from the outside through capillary action. Capillary action is usually more significant in narrow gaps, and the design of the cavity increases the complexity of the moisture passage path and reduces the capillary effect.

[0043] In this embodiment, two peaks are provided on both the first overlapping portion 102 and the second overlapping portion 103 on both sides of the flat plate portion 101. The double-peak structure makes the splicing between the two photovoltaic tile substrates 100 more firm and enhances the waterproof performance of the spliced photovoltaic tile substrates 100. A groove 106 is provided at the connection position between the third peak 1031 and the antinode on the side of the third peak 1031 close to the flat plate. The length of the antinode on the side of the first peak 1021 away from the flat plate is greater than the depth of the groove 106. When the two photovoltaic tile substrates 100 are spliced, the groove 106 and the antinode enclose a cavity to form a partition, reducing the capillary effect and further enhancing the waterproof performance of the spliced photovoltaic tile substrates 100.

[0044] In one embodiment, the length by which the antinode on the side of the first peak 1021 away from the flat plate exceeds the groove 106 is less than or equal to 5 mm. As Figure 3 shown, the length by which the antinode on the side of the first peak 1021 away from the flat plate exceeds the groove 106 is H, and H is less than or equal to 5 mm, so as to ensure that when the two photovoltaic tile substrates 100 are spliced, the groove 106 and the antinode enclose a cavity, and the cavity can maintain air circulation with the outside, so that the air pressure in the cavity is the same as the outside air pressure, reducing the risk of moisture penetration caused by air pressure difference. If there is an air pressure difference inside and outside the cavity, it may cause moisture to be sucked into the cavity, and the air pressure balance design can effectively prevent this situation from occurring.

[0045] Example 2

[0046] In one embodiment, the cross-sectional shape of the raised portion of the first overlapping portion 102 is trapezoidal, and the cross-sectional shape of the raised portion of the second overlapping portion 103 is trapezoidal.

[0047] The trapezoidal design can provide a larger contact area, thereby enhancing the structural stability and strength of the overlapped part, ensuring that the spliced ​​part is more solid, increasing the tightness of the connection between the two photovoltaic tile substrates 100, and better preventing the infiltration of air and moisture. It can also make the appearance of the photovoltaic tile substrate 100 more neat and beautiful, and improve the overall visual effect.

[0048] Furthermore, the trapezoid is a regular trapezoid. The regular trapezoid structure is symmetrical and can disperse the pressure more evenly when subjected to force, thereby reducing the risk of damage caused by local stress concentration, making the structure more stable in long-term use and extending its service life. At the same time, the regular trapezoid has higher consistency, which not only improves the convenience and accuracy of the installation process, but also enhances the beauty and coordination of the overall structure.

[0049] Example 3

[0050] Based on the first embodiment, the flat plate portion 101 is a rectangle, and the left and right sides are the long sides of the rectangle.

[0051] The first overlapping portion 102 and the second overlapping portion 103 respectively connect the two long sides of the rectangular flat plate portion 101. When two photovoltaic tile substrates 100 are connected, the connection area is increased, making the connection more stable and helping to better withstand external pressure (such as wind, snow, etc.).

[0052] Example 4

[0053] like Figure 1 and Figure 4 As shown, on the basis of the first embodiment, an upper overlapping portion 104 is provided at the upper end of the flat plate portion 101, and the upper overlapping portion 104 includes a flange with the same rising direction as that of the first overlapping portion 102;

[0054] A lower overlapping portion 105 is disposed at the lower end of the flat plate portion 101 . The lower overlapping portion 105 includes a flange with a raised direction opposite to that of the first overlapping portion 102 .

[0055] like Figure 4 As shown, when two photovoltaic tile substrates 100 are spliced ​​up and down, the lower overlap portion 105 of one photovoltaic tile substrate 100 covers the upper overlap portion 104 of the other photovoltaic tile substrate 100, and the tilting direction is designed to allow water to flow out along the natural slope. The lower overlap portion 105 tilts downward, ensuring that the water can flow smoothly from top to bottom along the lower overlap portion 105. The upper overlap portion 104 tilts upward, forming a reverse barrier to prevent water from infiltrating in the reverse direction.

[0056] In one embodiment, the tilting angle and length of the upper overlapping portion 104 and the lower overlapping portion 105 are equal.

[0057] The tilting angles and lengths of the upper overlapped portion 104 and the lower overlapped portion 105 of the two photovoltaic tile substrates 100 are equal, ensuring that the two overlapped portions can be accurately matched when stacked, thereby forming a tight bond. This tight bond not only improves the stability of the structure, but also provides a basic guarantee for waterproofing. The same tilting angle prevents water from easily penetrating from the overlapped portion, but instead flows away along the surface of the overlapped portion.

[0058] Example 5

[0059] This embodiment further provides a photovoltaic tile, including the photovoltaic tile substrate 100 mentioned above, and a photovoltaic substrate is arranged on the flat plate portion 101 .

[0060] The beneficial effects of the photovoltaic tile of this embodiment are equivalent to the beneficial effects of the photovoltaic tile substrate 100 described above, and will not be elaborated here.

[0061] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A photovoltaic tile substrate, characterized in that, It comprises a rectangular flat plate portion, wherein the left and right sides of the flat plate portion are respectively connected to the first overlapping portion and the second overlapping portion; The first overlapping portion includes a raised first wave crest and a raised second wave crest, wherein the second wave crest is disposed between the first wave crest and the flat plate portion; The second overlapping portion includes a raised third wave crest and a fourth wave crest, wherein the third wave crest is disposed between the fourth wave crest and the flat plate portion; The outer wall of the second overlapping portion is matched with the inner wall of the first overlapping portion, a groove is provided at the connection position between the third wave crest and the antinode close to the flat plate, and the length of the antinode of the first wave crest away from the flat plate is greater than the depth of the groove.

2. The photovoltaic tile substrate according to claim 1, wherein The length of the antinode of the first wave crest on the side away from the flat plate exceeding the groove is less than or equal to 5 mm.

3. The photovoltaic tile substrate according to claim 1, characterized in that, The raised shape of the cross section of the first overlapping portion is a trapezoid, and the raised shape of the cross section of the second overlapping portion is a trapezoid.

4. The photovoltaic tile substrate according to claim 3, wherein, The trapezoid is a regular trapezoid.

5. The photovoltaic tile substrate according to claim 1, wherein The flat plate portion is in a rectangular shape, and the left and right sides are long sides of the rectangle.

6. The photovoltaic tile substrate according to claim 1, wherein, An upper overlapping portion is arranged at the upper end of the flat plate portion, and the upper overlapping portion comprises a flange with a warping direction which is the same as the bulging direction of the first overlapping portion; A lower overlapping portion is disposed at the lower end of the flat plate portion, and the lower overlapping portion includes a flange with a warping direction opposite to a bulging direction of the first overlapping portion.

7. The photovoltaic tile substrate according to claim 6, characterized in that, The upper overlapping portion and the lower overlapping portion have the same tilting angle and length.

8. A photovoltaic tile, characterized in that, It comprises the photovoltaic tile substrate as described in any one of claims 1 to 7, and a photovoltaic substrate is arranged on the flat plate portion.

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