Photovoltaic tile lap joint structure, stamping tool and photovoltaic tile

Abstract

The utility model is applicable to the technical field of photovoltaic tiles, and provides a photovoltaic tile lap joint structure, a stamping tool and a photovoltaic tile, the photovoltaic tile lap joint structure comprises a rectangular substrate, and two opposite sides of the substrate are respectively provided with a first lap joint edge and a second lap joint edge; a sliding groove with a trapezoidal inner contour is formed in the first lap joint edge, and a groove opening of the sliding groove is the upper bottom of the trapezoid. A bulge with a trapezoidal outer contour is arranged on the second overlapping edge, and the table surface of the bulge is the lower bottom of the trapezoid; the protrusions are matched with the sliding grooves. When two photovoltaic tiles are connected, the protrusions and the sliding grooves correspondingly slide in and are buckled, installation is convenient, and meanwhile the self-locking characteristic of the trapezoid geometrical shape is utilized, so that the two photovoltaic tiles can keep good stability and sealing performance during lap joint.

Description

Technical Field

[0001] The utility model belongs to the technical field of photovoltaic tiles, and particularly relates to a photovoltaic tile lapping structure, a stamping tool and a photovoltaic tile. Background Art

[0002] Building Integrated Photovoltaics (BIPV) represents an important direction for the future development of distributed photovoltaics. This technology directly integrates the photovoltaic power generation function into building materials such as roof tiles, walls, windows, etc., which not only plays the basic function of building materials but also realizes the photovoltaic power generation function, thus greatly improving the energy efficiency and environmental sustainability of buildings.

[0003] In the prior art, the connection method of photovoltaic tiles may require the use of additional fixing parts or auxiliary materials such as glue to ensure the stability of the connection. This increases the complexity of the installation process, may require longer construction time and higher technical requirements, thus increasing the construction cost. At the same time, it will cause structural damage to the photovoltaic tile components, and the component lap joints are prone to rust and leakage. Summary of the Utility Model

[0004] The utility model provides a photovoltaic tile lapping structure, a stamping tool and a photovoltaic tile, aiming to solve the problems that additional fixing parts or auxiliary materials such as glue are used to connect photovoltaic tiles, the installation process is complex, and the photovoltaic tile components will be structurally damaged.

[0005] The utility model is realized as follows: a photovoltaic tile lapping structure includes a substrate, the substrate is rectangular, and a first lapping edge and a second lapping edge are respectively arranged on two opposite sides of the substrate;

[0006] A chute with a trapezoidal inner contour is arranged on the first lapping edge, and the notch of the chute is the upper base of the trapezoid;

[0007] A protrusion with a trapezoidal outer contour is arranged on the second lapping edge, and the table top of the protrusion is the lower base of the trapezoid;

[0008] The protrusion is adapted to the chute.

[0009] Optionally, one side of the substrate for setting the photovoltaic module is the front side, and the opposite side is the back side. The chute is arranged on the front side, and the protrusion is arranged on the back side.

[0010] Optionally, surplus material bosses are arranged on both sides of the bottom of the outer wall of the chute.

[0011] Optionally, both the inner contour of the chute and the outer contour of the protrusion are regular trapezoids.

[0012] Optionally, a stamping groove is provided on the front surface corresponding to the protrusion on the second overlapping edge, and the stamping groove is aligned with the center of the protrusion.

[0013] The present utility model also provides a stamping tool for manufacturing the above-mentioned photovoltaic tile overlapping structure. The stamping tool includes: a female die and a punch;

[0014] The female die includes a main body and a groove provided on the main body. A raised portion is provided in the middle of the bottom surface of the groove;

[0015] The punch includes a stamping portion. The extending direction of the stamping portion is the same as the extending direction of the groove. The width of the stamping portion is smaller than the width of the groove. The stamping portion is placed above the groove and is aligned with the raised portion;

[0016] The inner wall of the groove is adapted to the outer wall of the sliding groove on the first overlapping edge.

[0017] Optionally, the female die further includes a cushion block, and the top surface of the cushion block constitutes the bottom surface of the groove.

[0018] Optionally, the punch further includes a flattening portion. The flattening portion is connected to the stamping portion, and the projection of the flattening portion on the female die completely covers the groove.

[0019] Optionally, the punch further includes a connecting portion, and the connecting portion is adapted to the connection port of the stamping equipment.

[0020] Optionally, the distance from the side wall of the stamping portion to the side wall of the same-side groove is greater than the thickness of a single piece to be stamped and less than the total thickness of two pieces to be stamped.

[0021] The present utility model also provides a photovoltaic tile, which includes a photovoltaic module and the above-mentioned photovoltaic tile overlapping structure, and the photovoltaic module is arranged on the substrate.

[0022] The beneficial effects achieved by the present utility model are as follows. Since a sliding groove with a trapezoidal inner contour is provided on the first overlapping edge and a protrusion with a trapezoidal outer contour is provided on the second overlapping edge, the protrusion is adapted to the sliding groove. When connecting two photovoltaic tiles, the protrusion and the sliding groove are correspondingly slid and buckled, which is convenient for installation. At the same time, the self-locking characteristic of the trapezoidal geometric shape is utilized, so that the two photovoltaic tiles can maintain good stability and sealing performance during overlapping. Description of the Drawings

[0023] Figure 1 is a schematic structural diagram of the photovoltaic tile overlapping structure provided by the present utility model;

[0024] Figure 2 is a schematic structural diagram of the first overlapping edge provided by the present utility model;

[0025] Figure 3 It is a schematic structural diagram of the second overlapping edge provided by the present utility model;

[0026] Figure 4 It is a schematic structural diagram of the stamping tool provided by the present utility model.

[0027] Explanation of reference numerals:

[0028] 100, Photovoltaic tile overlapping structure; 110, First overlapping edge; 111, Chute; 112, Remnant convex platform; 120, Second overlapping edge; 121, Protrusion; 122, Stamping groove.

[0029] 200, Stamping tool; 210, Female die; 211, Groove; 2111, Bulge; 212, Spacer block; 220, Punch; 221, Stamping part; 222, Flattening part. Detailed implementation manners

[0030] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. The 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.

[0031] 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, and 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.

[0032] 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 number 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, "a plurality" means two or more unless otherwise specifically defined.

[0033] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" 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 that allows mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal communication between two components or the interaction relationship between two components. 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.

[0034] In the present utility model, unless otherwise clearly specified and defined, 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 other 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 merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath", and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0035] 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 merely 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. This 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.

[0036] The present utility model is provided with a chute having a trapezoidal inner contour on the first overlapping edge, and a protrusion having a trapezoidal outer contour on the second overlapping edge. The protrusion is adapted to the chute. When connecting two photovoltaic tiles, the protrusion and the chute are slid into and engaged correspondingly, which is convenient for installation. At the same time, the self-locking characteristic of the trapezoidal geometry is utilized, so that the two photovoltaic tiles can maintain good stability and sealing performance when overlapping.

[0037] Embodiment 1

[0038] As Figures 1 to 3As shown in the figure, this embodiment provides a photovoltaic tile lapping structure 100, which includes a substrate. The substrate is rectangular, and a first lapping edge 110 and a second lapping edge 120 are respectively arranged on two opposite sides of the substrate; a chute 111 with a trapezoidal inner contour is arranged on the first lapping edge 110, and the notch of the chute 111 is the upper base of the trapezoid; a protrusion 121 with a trapezoidal outer contour is arranged on the second lapping edge 120, and the tabletop of the protrusion 121 is the lower base of the trapezoid; the protrusion 121 is adapted to the chute 111.

[0039] The substrate is the main part of the entire photovoltaic tile. Its shape is rectangular. The substrate is used to carry the photovoltaic module and provides fixation and support for the photovoltaic module. The first lapping edge 110 and the second lapping edge 120 are respectively designed on two opposite sides of the substrate. The first lapping edge 110 of one photovoltaic tile and the second lapping edge 120 of another photovoltaic tile are lapped, and a stable lapping connection can be achieved between the two photovoltaic tiles through a specific structure.

[0040] A chute 111 is arranged on the first lapping edge 110. The inner contour of this chute 111 is trapezoidal, and the notch part is the upper base of the trapezoid. This means that the width of the chute 111 widens as the depth increases, forming a groove 211 with a trapezoidal cross-section. A protrusion 121 with a trapezoidal outer contour is arranged on the second lapping edge 120, and the tabletop of this protrusion 121 is the lower base of the trapezoid. This means that the width of the boss widens as the height increases. The protrusion 121 is matched with the chute 111 so that they can be closely fitted.

[0041] When two photovoltaic tiles are connected, the protrusion 121 on the second lapping edge 120 of one tile slides into the chute 111 on the first lapping edge 110 of another tile. Since the geometric shapes of the chute 111 and the protrusion 121 are trapezoidal and adapted to each other, this design not only ensures the tight connection between the tiles but also prevents the sliding or misalignment between the tiles.

[0042] In this application, a chute 111 with a trapezoidal inner contour is arranged on the first lapping edge 110, and a protrusion 121 with a trapezoidal outer contour is arranged on the second lapping edge 120. The protrusion 121 is adapted to the chute 111. When connecting two photovoltaic tiles, the protrusion 121 and the chute 111 slide into and engage with each other correspondingly, which is convenient for installation. At the same time, the self-locking characteristic of the trapezoidal geometry is utilized, so that the two photovoltaic tiles can maintain good stability and sealing performance during lapping.

[0043] Embodiment 2

[0044] On the basis of Embodiment 1, the side of the substrate for setting the photovoltaic module is the front side, and the opposite side is the back side. The chute 111 is arranged on the front side, and the protrusion 121 is arranged on the back side.

[0045] One side of the substrate used for setting up the photovoltaic module is called the front side, which is usually exposed to sunlight to absorb solar energy and perform photovoltaic conversion. The other side of the substrate is the back side, which is usually fixed on the roof or bracket and may have certain protection or support functions.

[0046] The trapezoidal chute 111 on the first overlapping edge 110 is located on the front side of the substrate. This means that when the tiles are laid, the chute 111 part will be exposed on the front side of the photovoltaic module. This design can ensure that when the tiles overlap, the chute 111 can easily combine with the protruding part 121 of other tiles while maintaining the flatness of the front side.

[0047] The trapezoidal protrusion 121 on the second overlapping edge 120 is located on the back side of the substrate. This design makes the protruding part 121 hidden on the back side of the tile when the tile is laid and combines with the chute 111 of the adjacent tile. This can not only provide a stable connection, but also make the front side of the tile flatter and more beautiful, reduce the accumulation of dust or debris, and thus improve the efficiency of the photovoltaic module.

[0048] Embodiment 3

[0049] As Figure 2 shown, on the basis of Embodiment 1, surplus material bosses 112 are arranged on both sides of the bottom of the outer wall of the chute 111.

[0050] The surplus material bosses 112 are located on both sides of the bottom of the outer wall of the chute 111. This means that they are located at the bottommost part of the chute 111 and on the left and right sides of the chute 111. By adding the surplus material bosses 112 on both sides of the bottom of the chute 111, the support method changes from the original surface support to point support. This point support method makes the force more concentrated and effectively avoids the friction and wear problems caused by the complete contact of the entire bottom of the chute 111 with the surface.

[0051] Embodiment 4

[0052] On the basis of Embodiment 1, the inner contour of the chute 111 and the outer contour of the protrusion 121 are both regular trapezoids.

[0053] A regular trapezoid is a special trapezoid where the lengths of the two non-parallel sides (oblique sides) are equal. The shape of the regular trapezoid can evenly distribute the stress points, reduce local stress concentration, and thus reduce the risk of stress failure of the tile or the connection part. This is especially important for photovoltaic tiles that are long-term exposed to the outdoor environment. At the same time, the inner contour of the chute 111 and the outer contour of the protrusion 121 being both regular trapezoids means that they can achieve a more precise fit when connecting.

[0054] Embodiment 5

[0055] On the basis of the first embodiment, a stamping groove 122 is provided on the front surface corresponding to the protrusion 121 on the second overlapping edge 120, and the stamping groove 122 is directly opposite to the center of the protrusion 121.

[0056] The photovoltaic tile overlapping structure 100 can be processed in various ways, such as cutting, sheet metal working, stamping, etc. Among them, stamping is the most suitable processing method. The stamping process can ensure that the protrusions 121 and the corresponding stamping grooves 122 on each photovoltaic tile have the same shape, ensuring high-precision fitting between the tiles, and the production cost is relatively low, which is crucial for mass production.

[0057] The stamping groove 122 is provided on the front surface of the protrusion 121 on the second overlapping edge 120 and is directly opposite to the center of the protrusion 121. It is the trace left during the processing of the protrusion 121 by using the stamping method.

[0058] The design of providing the stamping groove 122 on the front surface of the protrusion 121 on the second overlapping edge 120 makes the production of photovoltaic tiles more efficient and economical through the application of the stamping process, while improving the connection stability and installation convenience between the tiles.

[0059] Embodiment 6

[0060] As Figure 4 shown, this embodiment provides a stamping tool 200, including: a female die 210 and a punch 220;

[0061] The female die 210 includes a main body and a groove 211 provided on the main body. A raised portion 2111 is provided in the middle of the bottom surface of the groove 211;

[0062] The punch 220 includes a stamping portion 221. The extending direction of the stamping portion 221 is the same as the extending direction of the groove 211. The width of the stamping portion 221 is smaller than the width of the groove 211. The stamping portion 221 is placed above the groove 211 and is directly opposite to the raised portion 2111;

[0063] The inner wall of the groove 211 is adapted to the outer wall of the sliding groove 111 on the first overlapping edge 110.

[0064] The main body is the main part of the female die 210. The groove 211 is a recessed structure provided on the main body and is used to accommodate materials as the die part for stamping shapes. The raised portion 2111 for the protrusion 121 is provided in the middle of the bottom surface of the groove 211 to guide the deformation of the material during the stamping process for specific forming operations on the material.

[0065] The stamping part 221 is the working part of the punch 220, and its main function is to apply pressure during the stamping process to press the material into the groove 211 in the female die 210. The extending direction of the stamping part 221 is consistent with the extending direction of the groove 211 to ensure the precise fit between the punch 220 and the female die 210. The stamping part 221 is placed above the groove 211, and the width of the stamping part 221 is smaller than the width of the groove 211, which is convenient for the stamping part 221 to press the plastic part of the workpiece to be stamped into the groove 211 during the stamping process for extrusion and plastic deformation.

[0066] The materials usually used for stamping and plastic processing are mainly sheets. The thickness of the sheets is relatively thin, and they are usually prone to deformation during the stamping process, so as to achieve specific shapes and structures.

[0067] Specifically, when stamping, two workpieces to be stamped are stacked. The first overlapping edge 110 of the sheet placed in the lower layer and the second overlapping edge 120 of the sheet placed in the upper layer are placed corresponding to each other, and the overlapping part is placed on the groove 211. The punch 220 impacts downward on the groove 211 to extrude the two stacked sheets, and the sheets are extruded and deformed. Among them, the sheet placed in the lower layer deforms along the inner wall of the groove 211. Since there is a raised part 2111 in the middle of the bottom surface of the groove 211, there will be depressions relative to the raised part 2111. There are depressions on both sides of the bottom surface of the groove 211, and more deformed materials can be accommodated in the depressions. As the materials are distributed in the groove 211, a trapezoidal contour will be formed on the upper surface of the sheet placed in the lower layer.

[0068] The sheet placed in the lower layer is limited by the concave die. During the stamping process, the first overlapping edge 110 deforms along the shape of the inner wall of the groove 211 to form a chute 111, and the outer wall of the chute 111 fits with the inner wall of the groove 211 in the stamping tool 200 to form a matching shape. The sheet placed in the upper layer is limited by the sheet placed in the lower layer. The lower surface of the sheet placed in the upper layer contacts the upper surface of the sheet placed in the lower layer, and the lower surface of the sheet placed in the upper layer deforms following the contour of the upper surface of the sheet placed in the lower layer. Therefore, the lower surface of the sheet placed in the upper layer also forms a trapezoidal contour and is adapted to the trapezoidal contour formed on the upper surface of the sheet placed in the lower layer.

[0069] Specifically, the first overlapping edge 110 and the second overlapping edge 120 are overlapped, and the first overlapping edge 110 is placed in the lower layer of the second overlapping edge 120. Using the stamping tool 200 in this embodiment to stamp the first overlapping edge 110 and the second overlapping edge 120, the chute 111 in the above embodiment can be formed on the first overlapping edge 110, and the protrusion 121 in the above embodiment can be formed on the second overlapping edge 120.

[0070] The stamping tool 200 of this embodiment is used for processing sheets. Two sheets are stacked. A chute 111 with a trapezoidal inner contour is formed on the lower sheet, and a protrusion 121 with a trapezoidal outer contour is formed on the upper sheet. The chute 111 and the protrusion 121 are adapted to each other, making use of the self-locking characteristic of the trapezoidal geometry, so that two photovoltaic tiles can maintain good stability and sealing performance during lapping, and at the same time, the installation is convenient.

[0071] Embodiment 7

[0072] As Figure 4 shown, on the basis of Embodiment Six, the female die 210 further includes a spacer block 212, and the top surface of the spacer block 212 constitutes the bottom surface of the groove 211.

[0073] The spacer block 212 is located inside the female die 210, and its top surface constitutes the bottom surface of the finally formed groove 211. Specifically, the spacer block 212 can be detachably connected to the female die 210. On the one hand, the bottom surface of the groove 211 is subjected to a large impact force during the stamping process and is prone to deformation and damage. The detachable connection between the spacer block 212 and the female die 210 facilitates the replacement and repair of the spacer block 212 to ensure the processing accuracy of stamping. On the other hand, the spacer block 212 directly determines the shape and depth of the groove 211, and the thickness and shape of the chute 111 and the protrusion 121 can be adjusted by replacing the spacer block 212.

[0074] Embodiment 8

[0075] As Figure 4 shown, on the basis of Embodiment Six, the punch 220 further includes a flattening portion 222, and the flattening portion 222 is connected to the stamping portion 221. The projection of the flattening portion on the female die 210 completely covers the groove 211.

[0076] When the material is subjected to uneven stress during the stamping process, it may cause the materials on both sides of the groove 211 to warp. This warping will affect the flow and forming accuracy of the material, resulting in problems such as deformation or inconsistent dimensions of the finished product. By providing the flattening portion 222 on the punch 220 and connecting it to the stamping portion 221, the flattening portion 222 can press the sheets on both sides of the groove 211 during the stamping process to prevent the materials from warping. The design of the flattening portion 222 ensures that its projection on the female die 210 can completely cover the groove 211 to ensure the effectiveness of pressing the sheets on both sides of the groove 211.

[0077] Embodiment 9

[0078] On the basis of Embodiment Six, the punch 220 further includes a connecting portion, and the connecting portion is adapted to the connection port of the stamping equipment.

[0079] A connecting structure is also provided on the punch 220 for connecting the punch 220 to the connection port of the stamping equipment, so as to ensure that the punch 220 can be stably installed on the stamping equipment and maintain its precise position and orientation during the stamping process.

[0080] Embodiment 10

[0081] On the basis of Embodiment 1, the distance from the side wall of the stamping part 221 to the side wall of the same-side groove 211 is greater than the thickness of a single piece of the workpiece to be stamped and less than the total thickness of two pieces of the workpiece to be stamped.

[0082] The distance from the side wall of the stamping part 221 to the side wall of the same-side groove 211 determines the flow path and filling state of the material entering the groove 211 during the stamping process. The thickness of a single piece of the workpiece to be stamped refers to the thickness of a single material sheet and is one of the key parameters for determining the distance design. The total thickness of two pieces of the workpiece to be stamped refers to the total thickness when two pieces of material overlap, which is the maximum material thickness to be considered during stamping.

[0083] When the distance from the side wall of the stamping part 221 to the side wall of the same-side groove 211 is less than the thickness of a single piece of the workpiece to be stamped, the material cannot fully flow into the groove 211 during the stamping process, resulting in incomplete filling of the groove 211. In this way, the precise trapezoidal chute 111 profile cannot be formed, affecting the functionality and stability of the first overlapping edge 110.

[0084] When the distance from the side wall of the stamping part 221 to the side wall of the same-side groove 211 is greater than the total thickness of two pieces of the workpiece to be stamped, the material will flow excessively during the stamping process and cannot be effectively formed, resulting in the shapes of the groove 211 and the chute 111 deviating from the design requirements, and problems such as loose connection or inconsistent dimensions may occur.

[0085] In this application, by designing the distance between the single-piece thickness and the total thickness of two pieces, it can be ensured that the material will neither be unable to be fully filled due to too small space nor cause uncontrolled material flow due to too large space. This enables the material to flow within a controlled range and finally form a chute 111 with a trapezoidal inner contour, thus ensuring the mating accuracy of the first overlapping edge 110.

[0086] Embodiment 11

[0087] This embodiment provides a photovoltaic tile, including a photovoltaic module and the photovoltaic tile overlapping structure in Embodiment 1, and the photovoltaic module is arranged on the substrate.

[0088] The beneficial effects of the photovoltaic tile in this embodiment are equivalent to those of the above photovoltaic tile overlapping structure and will not be elaborated here.

[0089] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A photovoltaic tile overlap structure, characterized in that: The substrate comprises a rectangular shape, and two opposite sides of the substrate are respectively provided with a first overlapping edge and a second overlapping edge; A slide groove with a trapezoidal inner contour is provided on the first overlapping edge, and the notch of the slide groove is the upper bottom of the trapezoid; A protrusion with a trapezoidal outer contour is provided on the second overlapping edge, and the table top of the protrusion is the lower base of the trapezoid; The protrusion is matched with the sliding groove.

2. The photovoltaic tile overlap structure according to claim 1, characterized in that: The substrate has one side for setting the photovoltaic module as the front side, and the other side opposite to it as the back side. The slide groove is set on the front side, and the protrusion is set on the back side.

3. The photovoltaic tile overlap structure according to claim 1, characterized in that: Residual material bosses are arranged on both sides of the bottom of the outer wall of the chute.

4. The photovoltaic tile overlap structure according to claim 1, characterized in that: The inner contour of the slide groove and the outer contour of the protrusion are both regular trapezoids.

5. The photovoltaic tile overlap structure according to claim 1, characterized in that: A stamping groove is arranged on the front side corresponding to the protrusion on the second overlapping edge, and the stamping groove faces the center of the protrusion.

6. A punching tool, characterized in that: The stamping tool is used to manufacture the photovoltaic tile overlap structure according to claims 1 to 5, and the stamping tool comprises: a die and a punch; The concave mold comprises a main body and a groove arranged on the main body, and a raised portion is arranged in the middle of the bottom surface of the groove; The punch includes a punching portion, the extending direction of the punching portion is consistent with the extending direction of the groove, the width of the punching portion is smaller than the width of the groove, and the punching portion is placed above the groove and directly facing the raised portion; The inner wall of the groove is matched with the outer wall of the slide slot on the first overlapping edge.

7. The punching tool according to claim 6, characterized in that The die also includes a cushion block, the top surface of which constitutes the bottom surface of the groove.

8. The punching tool according to claim 6, characterized in that The punch also includes a flattening portion, which is connected to the punching portion, and the projection of the flattening portion on the die completely covers the groove.

9. The punching tool according to claim 6, characterized in that The punch also includes a connecting portion, which is adapted to a connecting port of a punching device.

10. The punching tool according to claim 6, characterized in that The distance from the side wall of the stamping portion to the side wall of the groove on the same side is greater than the thickness of a single piece to be stamped, and less than the total thickness of two pieces to be stamped.

11. A photovoltaic tile, characterized in that: It comprises a photovoltaic component and the photovoltaic tile overlapping structure according to claims 1 to 5, wherein the photovoltaic component is arranged on the substrate.

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