Photovoltaic system

Abstract

The invention provides a photovoltaic system, and relates to the technical field of photovoltaic tile installation, and the photovoltaic system comprises a plurality of photovoltaic tiles; the keel is provided with a first step surface and a second step surface, the first step surface is higher than the second step surface, the first step surface abuts against the backlight surface of the at least one photovoltaic tile, and the second step surface abuts against the backlight surface of the at least one photovoltaic tile; the limiting piece is connected with the keel so as to limit and fix the photovoltaic tile; the limiting piece comprises a connecting part connected with the keel through a connecting piece; the first limiting part is connected with the connecting part and is pressed on the light receiving surface of at least one photovoltaic tile; and the second limiting part is connected with the connecting part and is pressed on the light receiving surface of at least one photovoltaic tile. According to the technical scheme, the at least two photovoltaic tiles abut against the two step faces respectively to achieve lap joint of the front step and the rear step, the photovoltaic tiles are connected with the keel through the limiting pieces, a worker can conveniently disassemble and maintain a certain photovoltaic tile independently, and the maintenance cost can be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic tile installation, and more particularly, to a photovoltaic system. Background Art

[0002] Building integrated photovoltaics refers to integrating photovoltaic modules on the surface or periphery of a building, enabling it to have both building enclosure and power generation functions, directly replacing traditional building components such as roof panels, tiles, windows, building facades, and rain shelters, or can be designed to form composite building components integrating functions such as power generation, protection, and decoration.

[0003] With the increasing popularity of building integrated photovoltaic technology, in order to better combine with the building surface, photovoltaic tiles that can replace traditional tiles have emerged. Photovoltaic tiles have both power generation and protection functions as building materials.

[0004] In related technologies, when installing photovoltaic tiles, the photovoltaic tiles are usually directly installed on purlins (i.e., keels) through screws. After two adjacent photovoltaic tiles are overlapped, the screws will be blocked. Therefore, this installation structure is not conducive to the disassembly and maintenance of photovoltaic tiles in the later stage, and the maintenance cost is relatively high. Summary of the Invention

[0005] In order to solve or improve the technical problem that the installation structure in related technologies is not conducive to the disassembly and maintenance of photovoltaic tiles in the later stage and the maintenance cost is relatively high, the purpose of the present invention is to provide a photovoltaic system.

[0006] To achieve the above object, the present invention provides a photovoltaic system, including: a plurality of photovoltaic tiles; a keel having a first stepped surface and a second stepped surface, the first stepped surface being higher than the second stepped surface, the first stepped surface abutting against the backlight surface of at least one photovoltaic tile, and the second stepped surface abutting against the backlight surface of at least one photovoltaic tile; at least one limiting member connected to the keel, the limiting member being used for limiting and fixing the photovoltaic tile; the limiting member includes: a connecting portion connected to the keel through a connecting member; a first limiting portion connected to the connecting portion, the first limiting portion pressing on the light-receiving surface of at least one photovoltaic tile; and a second limiting portion connected to the connecting portion, the second limiting portion pressing on the light-receiving surface of at least one photovoltaic tile.

[0007] In the technical solution defined by the present invention, on the one hand, the first stepped surface is higher than the second stepped surface, and at least two photovoltaic tiles respectively abut against the first stepped surface and the second stepped surface of the keel, so that at least two photovoltaic tiles are stepped and overlapped front and back, and there is a height difference between the photovoltaic tiles, which is convenient for workers to repair or maintain the photovoltaic tiles and is beneficial to reducing the maintenance cost; on the other hand, by providing the limiting member, the photovoltaic tile and the keel can be connected. This design method does not require directly opening holes in the photovoltaic tile, which is beneficial to improving the structural strength of the photovoltaic tile and extending its service life.

[0008] Typically, photovoltaic tiles include a tempered glass layer. Since no holes are required in the tiles, this helps reduce the spontaneous rupture rate of the tempered glass layer, thereby extending the service life of the tiles. It should be noted that the "spontaneous rupture rate" refers to the probability of a material rupturing without significant external force and is a core indicator of material reliability.

[0009] It's important to emphasize that the photovoltaic system of the present invention utilizes stoppers, resulting in a simple structure that helps reduce assembly and installation costs. Furthermore, the photovoltaic system of the present invention can be disassembled individually (a single photovoltaic tile can be removed without affecting other tiles), facilitating subsequent maintenance of the system.

[0010] In some technical solutions, optionally, the keel includes: a main load-bearing member; a first protrusion connected to the main load-bearing member; a second protrusion connected to the main load-bearing member, the height of the second protrusion is less than the height of the first protrusion, and the second protrusion, the first protrusion and the main load-bearing member form a stepped structure; the first step surface is provided on the side of the first protrusion away from the main load-bearing member; the second step surface is provided on the side of the second protrusion away from the main load-bearing member; the first protrusion has a connecting side wall on the side close to the second protrusion; the connecting part is against the connecting side wall, and the connecting member is passed through the connecting part and the connecting side wall.

[0011] In this technical solution, since the heights of the two raised portions are different, the keel of the stepped structure has step surfaces of different heights. At least two photovoltaic tiles are overlapped with each other in the front and rear steps and there is a height difference, which makes it convenient for staff to disassemble and maintain a certain photovoltaic tile separately, thereby reducing maintenance costs.

[0012] The connection part is detachably connected to the connecting side wall through a connector. Compared with the method of shielding the screws after overlapping two adjacent photovoltaic tiles, this design method facilitates the staff to disassemble the photovoltaic tiles individually, facilitates the subsequent maintenance of the system, and helps reduce maintenance costs.

[0013] In some technical solutions, optionally, a drainage groove is provided on the keel, and the drainage groove is provided between the first raised portion and the second raised portion.

[0014] In this technical solution, the drain groove primarily serves to drain and drain sewage. By arranging the drain groove between the first and second raised portions, i.e., in the recessed area between the first and second raised portions, there is no need to increase the thickness or width of the keel, which helps optimize the spatial layout.

[0015] In some technical solutions, optionally, the photovoltaic system further includes: a first rubber pad, one side of the first rubber pad is connected to the first step surface, and the other side of the first rubber pad is against the backlight surface of at least one photovoltaic tile.

[0016] In this technical solution, the backlight surface of the photovoltaic tile abuts against the first stepped surface through the first rubber pad, and the first rubber pad can play a buffering role to avoid rigid contact between the photovoltaic tile and the first stepped surface.

[0017] In some technical solutions, optionally, the photovoltaic system further includes: a second rubber pad, one side of the second rubber pad is connected to the second stepped surface, and the other side of the second rubber pad abuts against the backlight surface of at least one photovoltaic tile.

[0018] In this technical solution, the backlight surface of the photovoltaic tile abuts against the second stepped surface through the second rubber pad, and the second rubber pad can play a buffering role to avoid rigid contact between the photovoltaic tile and the second stepped surface.

[0019] In some technical solutions, optionally, a third convex portion is provided at one end of the second rubber pad close to the first stepped surface, and the third convex portion extends in a direction away from the second stepped surface, and the third convex portion is used to abut against at least one photovoltaic tile.

[0020] In this technical solution, for the photovoltaic tile that abuts against the second stepped surface through the second rubber pad, its end portion can abut against the third convex portion. The third convex portion is used for installing and positioning the photovoltaic tile to prevent the photovoltaic tile from moving left and right after installation.

[0021] In some technical solutions, optionally, the limiting member further includes: a third limiting portion, one end of the third limiting portion is connected to the connecting portion, and the other end of the third limiting portion extends in a direction away from the first convex portion; a fourth limiting portion, one end of the fourth limiting portion is connected to the other end of the third limiting portion, and the other end of the fourth limiting portion extends in a direction away from the second convex portion, and the other end of the fourth limiting portion is connected to the first limiting portion; at least a part of the photovoltaic tile that abuts against the first stepped surface is disposed between the first limiting portion and the third limiting portion.

[0022] In this technical solution, when the limiting member is in a connected state with the keel, the connecting portion abuts against the connecting side wall of the first convex portion. Since the third connecting portion extends in a direction away from the first convex portion, and the fourth limiting portion is used to connect the third connecting portion and the first limiting portion, therefore, at least a part of the photovoltaic tile can be directly above the connecting portion and the connecting member to prevent rain, snow, hail or other foreign objects from directly impacting the connecting portion and the connecting member. Since there is a height difference between the photovoltaic tiles, the connecting member will not be blocked due to the overlap between the photovoltaic tiles, which is beneficial to reducing the assembly cost and the installation cost.

[0023] In some technical solutions, optionally, the third limiting portion, the fourth limiting portion and the first limiting portion enclose a first installation groove, and at least a part of the photovoltaic tile that abuts against the first stepped surface is disposed in the first installation groove.

[0024] In this technical solution, the photovoltaic tile that abuts against the first stepped surface through the first rubber pad has at least a part disposed in the first installation groove. In this design, the third limiting part, the fourth limiting part, and the first limiting part can envelope at least a part of the photovoltaic tile, which is beneficial to improving the limiting effect on the photovoltaic tile to prevent the photovoltaic tile from moving up and down or left and right.

[0025] In some technical solutions, optionally, the photovoltaic system further includes: a third rubber pad disposed in the first installation groove, one side of the third rubber pad is connected to the fourth limiting part, and the other side of the third rubber pad abuts against the photovoltaic tile.

[0026] In this technical solution, the photovoltaic tile abuts against the fourth limiting part through the third rubber pad, and the third rubber pad can play a buffering role to avoid rigid contact between the photovoltaic tile and the fourth limiting part.

[0027] In some technical solutions, optionally, the third limiting part, the connecting part, and the second limiting part enclose a second installation groove; the photovoltaic system further includes: a waterproof rubber strip, and at least a part of the waterproof rubber strip is disposed in the second installation groove.

[0028] In this technical solution, the waterproof rubber strip is used to fill the lap joint gap in the photovoltaic system. At least a part of the waterproof rubber strip is disposed in the second installation groove to prevent impurities such as rainwater from entering the second installation groove of the limiting member, and thus can largely prevent impurities such as rainwater from entering between the limiting member and the keel through the pores, which is beneficial to extending the service life of the limiting member and the keel.

[0029] The additional aspects and advantages of the technical solution of the present invention will become apparent in the following description part, or be learned through the practice of the present invention. Brief Description of the Drawings

[0030] Figure 1 Shows a schematic diagram of a photovoltaic system according to an embodiment of the present invention;

[0031] Figure 2 Shows a schematic diagram of a keel according to an embodiment of the present invention;

[0032] Figure 3 Shows a schematic diagram of a keel according to another embodiment of the present invention;

[0033] Figure 4 Shows a schematic diagram of a photovoltaic system according to another embodiment of the present invention;

[0034] Figure 5 Shows a schematic diagram of a photovoltaic system according to another embodiment of the present invention;

[0035] Figure 6 Shows an exploded view of a photovoltaic system according to an embodiment of the present invention;

[0036] Figure 7 The figure shows a schematic diagram of a photovoltaic system according to another embodiment of the present invention.

[0037] Among them, Figures 1 to 7 the correspondence between the reference numerals and the component names in the figure is as follows:

[0038] 100: Photovoltaic system; 110: Keel; 111: Main load-bearing member; 112: First convex part; 1121: First stepped surface; 1122: Connecting side wall; 113: Second convex part; 1131: Second stepped surface; 114: Hollow cavity; 115: Drainage groove; 120: Limiting member; 121: Connecting part; 122: First limiting part; 123: Second limiting part; 124: Third limiting part; 125: Fourth limiting part; 131: First installation groove; 132: Second installation groove; 133: Connecting member; 141: First rubber pad; 142: Second rubber pad; 143: Third convex part; 144: Third rubber pad; 150: Waterproof rubber strip; 151: Hollow prism structure; 152: Waterproof lip; 160: Photovoltaic tile; 161: Light-receiving surface; 162: Backlight surface; H1: Height of the first convex part; H2: Height of the second convex part. Detailed implementation manners

[0039] In order to be able to more clearly understand the above-mentioned objects, features and advantages of the embodiments of the present invention, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners. It should be noted that, without conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0040] In the following description, many specific details are set forth in order to fully understand the present invention. However, the embodiments of the present invention can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the limitations of the specific embodiments disclosed below.

[0041] The following refers to Figures 1 to 7 Describe the photovoltaic system provided according to some embodiments of the present invention.

[0042] In an embodiment of the present invention, as Figure 1 , Figure 4 , Figure 5 , Figure 6 and Figure 7 shown, the photovoltaic system 100 includes a plurality of photovoltaic tiles 160, a keel 110 and at least one limiting member 120. Among them, the photovoltaic tile 160 is a curved photovoltaic tile or a flat photovoltaic tile, and the photovoltaic tile 160 is flexibly set according to actual needs.

[0043] The keel 110 has a first stepped surface 1121 and a second stepped surface 1131, and the first stepped surface 1121 is higher than the second stepped surface 1131. In other words, the keel 110 is a stepped structure and has stepped surfaces with different heights, and the position of the first stepped surface 1121 is higher than the position of the second stepped surface 1131.

[0044] The first stepped surface 1121 abuts against the backlight surface 162 of at least one photovoltaic tile 160, and the second stepped surface 1131 abuts against the backlight surface 162 of at least one photovoltaic tile 160. The stepped surface is used to abut against the backlight surface 162 of the photovoltaic tile 160.

[0045] It should be noted that as Figure 1 shown, the photovoltaic tile 160 has opposite light-receiving surface 161 and backlight surface 162. Among them, the light-receiving surface 161 is the surface of the photovoltaic tile 160 that directly receives sunlight; the backlight surface 162 is the surface of the photovoltaic tile 160 that faces away from sunlight.

[0046] When installing two adjacent photovoltaic tiles 160, the backlight surface 162 of one of the photovoltaic tiles 160 abuts against the first stepped surface 1121 of the keel 110, and the backlight surface 162 of the other photovoltaic tile 160 abuts against the second stepped surface 1131 of the keel 110.

[0047] At least two photovoltaic tiles 160 respectively abut against the first stepped surface 1121 and the second stepped surface 1131 of the keel 110, so that at least two photovoltaic tiles 160 are stepped and lapped front and back, and there is a height difference between the photovoltaic tiles 160, which is convenient for workers to repair or maintain the photovoltaic tiles 160 and is beneficial to reducing the maintenance cost.

[0048] Optionally, the keel 110 is a stepped purlin, which is usually arranged on the building roof and is used to install the photovoltaic tile 160 so that the photovoltaic tile 160 replaces the traditional tile.

[0049] Optionally, as Figure 1 shown, the keel 110 is a hollow structure, that is, the keel 110 is provided with a hollow cavity 114. In this design method, on the one hand, it can greatly reduce the self-weight of the keel 110 on the premise that the keel 110 has sufficient structural strength, thereby reducing the load on the roof or the installation base surface and reducing the reinforcement cost; on the other hand, it can reduce the consumption of raw materials and reduce the material cost; on the third hand, the elastic deformation ability of the hollow structure is better than that of the solid structure, and the vibration energy can be absorbed through the slight deformation of the cavity wall, which is beneficial to reducing the risk of structural damage under earthquakes or strong winds.

[0050] The limiting member 120 is connected to the keel 110, and the limiting member 120 is used to limit and fix the photovoltaic tile 160.

[0051] It should be emphasized that the number of the limiting members 120 is at least one, that is, the limiting members 120 can be one, two or more, and the number of the limiting members 120 can be flexibly set according to actual needs.

[0052] Optionally, the limiting member 120 and the keel 110 are detachably connected. When the limiting member 120 and the keel 110 are in a connected state, the limiting member 120 is used to limit and fix at least two photovoltaic tiles 160.

[0053] As Figure 1 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 shown, the limiting member 120 includes a connecting portion 121, a first limiting portion 122 and a second limiting portion 123. The connecting portion 121 is connected to the keel 110 through a connecting member 133.

[0054] Optionally, the connecting portion 121 and the keel 110 are detachably connected through the connecting member 133.

[0055] In a specific embodiment, the connecting member 133 is a screw. The connecting portion 121 is detachably connected to the keel 110 through the screw. When the limiting member 120 and the keel 110 are in a connected state, the screw penetrates through the connecting portion 121 and the keel 110. The staff can disassemble and assemble the limiting member 120 by rotating the screw, and the operation is simple, convenient and fast.

[0056] In a specific embodiment, the connecting member 133 is a bolt. The connecting portion 121 is detachably connected to the keel 110 through the bolt. When the limiting member 120 and the keel 110 are in a connected state, the bolt penetrates through the connecting portion 121 and the keel 110. The staff can disassemble and assemble the limiting member 120 by disassembling and assembling the bolt, and the operation is simple, convenient and fast.

[0057] In a specific embodiment, the connecting member 133 is a pin shaft, and both ends of the pin shaft are axially limited by split pins. The staff can disassemble and assemble the limiting member 120 by disassembling and assembling the pin shaft, and the operation is simple, convenient and fast.

[0058] When the limiting member 120 and the keel 110 are in a connected state, the surface of the connecting portion 121 abuts against the keel 110, and the connecting member 133 penetrates through the connecting portion 121 and the keel 110.

[0059] The first limiting portion 122 is connected to the connecting portion 121, and the first limiting portion 122 presses on the light-receiving surface 161 of at least one photovoltaic tile 160. The second limiting portion 123 is connected to the connecting portion 121, and the second limiting portion 123 presses on the light-receiving surface 161 of at least one photovoltaic tile 160.

[0060] When installing two adjacent photovoltaic tiles 160, the light-receiving surface 161 of one photovoltaic tile 160 abuts against the first limiting portion 122, and this photovoltaic tile 160 is arranged between the first limiting portion 122 and the first stepped surface 1121; the light-receiving surface 161 of the other photovoltaic tile 160 abuts against the second limiting portion 123, and this photovoltaic tile 160 is arranged between the second limiting portion 123 and the second stepped surface 1131.

[0061] In a specific embodiment, the first limiting portion 122 and the connecting portion 121 are of an integral structure, and the second limiting portion 123 and the connecting portion 121 are of an integral structure. This design method has good mechanical properties and high connection strength compared with the post-processing method (such as welding), which is beneficial to reducing the number of components and improving the assembly efficiency.

[0062] In the technical solution defined by the present invention, on the one hand, the first stepped surface 1121 is higher than the second stepped surface 1131, and at least two photovoltaic tiles 160 respectively abut against the first stepped surface 1121 and the second stepped surface 1131 of the keel 110, so that at least two photovoltaic tiles 160 are stepped and overlapped front and back, and there is a height difference between the photovoltaic tiles 160, which is convenient for workers to repair or maintain the photovoltaic tiles 160 and is beneficial to reducing the maintenance cost; on the other hand, by arranging the limiting member 120, the photovoltaic tile 160 can be connected to the keel 110. This design method does not require direct punching on the photovoltaic tile 160, which is beneficial to improving the structural strength of the photovoltaic tile 160 and extending the service life.

[0063] Generally, the photovoltaic tile 160 includes a toughened glass layer. Since there is no need to punch holes in the photovoltaic tile 160, it is beneficial to reduce the self-explosion rate of the toughened glass layer, thereby extending the service life of the photovoltaic tile 160. It should be noted that the "self-explosion rate" refers to the probability that the material ruptures by itself without significant external force, and is the core index to measure the reliability of the material.

[0064] It should be emphasized that the photovoltaic system 100 of the present invention adopts the limiting member 120, which has a simple structure and is beneficial to reducing the assembly cost and the installation cost. Moreover, the photovoltaic system 100 of the present invention can be disassembled piece by piece (individually disassembling a certain photovoltaic tile 160 without affecting other photovoltaic tiles 160), which is convenient for the later maintenance of the system.

[0065] In some embodiments, optionally, such as Figure 1 、 Figure 2 and Figure 3As shown, the keel 110 includes a main load-bearing member 111, a first protrusion 112, and a second protrusion 113. The first protrusion 112 is connected to the main load-bearing member 111, and the second protrusion 113 is connected to the main load-bearing member 111. The main load-bearing member 111 mainly serves as an installation carrier with respect to the first protrusion 112 and the second protrusion 113.

[0066] Optionally, the first protrusion 112 and the main load-bearing member 111 are of an integral structure, and the second protrusion 113 and the main load-bearing member 111 are of an integral structure. Compared with the post-processing method (such as welding), it has good mechanical properties and high connection strength, which is beneficial to reducing the number of components and improving the assembly efficiency.

[0067] In a specific embodiment, the first protrusion 112 is provided on one side of the main load-bearing member 111. The second protrusion 113 is provided on one side of the main load-bearing member 111. The first protrusion 112 and the second protrusion 113 are provided on the same side of the main load-bearing member 111. The other side of the main load-bearing member 111 is used to connect to the building roof.

[0068] As Figure 3 shown, the height H2 of the second protrusion 113 is less than the height H1 of the first protrusion 112. The second protrusion 113, the first protrusion 112, and the main load-bearing member 111 form a stepped structure.

[0069] A first stepped surface 1121 is provided on the side of the first protrusion 112 facing away from the main load-bearing member 111; a second stepped surface 1131 is provided on the side of the second protrusion 113 facing away from the main load-bearing member 111.

[0070] Optionally, the first stepped surface 1121 is the top surface of the first protrusion 112; the second stepped surface 1131 is the top surface of the second protrusion 113.

[0071] When installing two adjacent photovoltaic tiles 160, the backlight surface 162 of one photovoltaic tile 160 abuts against the first stepped surface 1121 of the keel 110, and the backlight surface 162 of the other photovoltaic tile 160 abuts against the second stepped surface 1131 of the keel 110.

[0072] It should be noted that due to the different heights of the two protrusions, the keel 110 with a stepped structure has stepped surfaces with different heights. At least two photovoltaic tiles 160 respectively abut against the first stepped surface 1121 and the second stepped surface 1131 of the keel 110, so that at least two photovoltaic tiles 160 are stepped and overlapped front and back and have a height difference, which is convenient for the staff to separately disassemble and maintain a certain photovoltaic tile 160 and is beneficial to reducing the maintenance cost.

[0073] One side of the first protrusion 112 close to the second protrusion 113 has a connecting side wall 1122. When the limiting member 120 and the keel 110 are in a connected state, the connecting portion 121 abuts against the connecting side wall 1122, and the connecting member 133 passes through the connecting portion 121 and the connecting side wall 1122.

[0074] In other words, the connecting portion 121 is detachably connected to the connecting side wall 1122 through the connecting member 133. Compared with the method of blocking screws after two adjacent photovoltaic tiles 160 are lapped, this design method facilitates the staff to disassemble a single photovoltaic tile 160 (disassemble a certain photovoltaic tile 160 alone without affecting other photovoltaic tiles 160), facilitates the later maintenance of the system, and is beneficial to reducing the maintenance cost.

[0075] It should be noted that since the connecting portion 121 and the connecting side wall 1122 are detachably connected, when the staff disassembles and assembles the limiting member 120, they only need to disassemble and assemble the connecting member 133 on one side of the keel 110. The connecting member 133 will not be blocked due to the lap between the photovoltaic tiles 160, which is beneficial to reducing the assembly cost and the installation cost.

[0076] In a specific embodiment, a kidney-shaped adjustment hole is provided on the connecting side wall 1122 of the first protrusion 112 for the connecting member 133 to pass through. By providing the kidney-shaped adjustment hole, a certain range of installation errors is allowed, which facilitates the staff to quickly disassemble and assemble the connecting member 133 and is beneficial to reducing the assembly difficulty.

[0077] In some embodiments, optionally, as Figure 1 、 Figure 2 and Figure 3 shown, a drainage groove 115 is provided on the keel 110, and the drainage groove 115 is provided between the first protrusion 112 and the second protrusion 113.

[0078] The drainage groove 115 mainly functions to drain water and sewage, preventing rainwater or other impurities from accumulating on the keel 110, which is beneficial to reducing the load on the roof or the installation base surface.

[0079] By arranging the drainage groove 115 between the first protrusion 112 and the second protrusion 113, that is, the drainage groove 115 is located in the concave area between the first protrusion 112 and the second protrusion 113, there is no need to additionally increase the thickness or width of the keel 110, which is beneficial to optimizing the space layout.

[0080] In a specific embodiment, the groove wall of the drainage groove 115 is provided with a polytetrafluoroethylene (PTFE) coating, which is beneficial to reducing the surface friction coefficient and reducing the adhesion of impurities.

[0081] It should be noted that there is a gap between the first protrusion 112 and the second protrusion 113 , and the gap forms a drainage groove 115 for draining water and sewage.

[0082] In some embodiments, optionally, as Figure 1 、 Figure 2 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 As shown, the photovoltaic system 100 further includes a first adhesive pad 141 . One side of the first adhesive pad 141 is connected to the first stepped surface 1121 , and the other side of the first adhesive pad 141 abuts against the backlight surface 162 of at least one photovoltaic tile 160 .

[0083] In other words, the backlight surface 162 of the photovoltaic tile 160 does not directly contact the first stepped surface 1121 , and the backlight surface 162 of the photovoltaic tile 160 abuts against the first stepped surface 1121 via the first adhesive pad 141 .

[0084] The first rubber pad 141 is a flexible rubber pad. Its rigidity is less than that of the keel 110. Because the backlight surface 162 of the photovoltaic tile 160 is abutted against the first stepped surface 1121 via the first rubber pad 141, the first rubber pad 141 acts as a buffer, preventing rigid contact between the photovoltaic tile 160 and the first stepped surface 1121.

[0085] It should be noted that stiffness refers to the ability of an object or structure to resist deformation when subjected to stress. The first rubber pad 141 has a certain degree of elastic deformation, which can absorb some of the stress generated by the thermal expansion and contraction of the photovoltaic tile 160, as well as the stress caused by wind load vibration, thereby extending the service life of the photovoltaic system 100 and the photovoltaic tile 160.

[0086] In a specific embodiment, the first rubber pad 141 is fixedly connected to the first stepped surface 1121 by bonding.

[0087] For example, the colloid is applied to one side of the first adhesive pad 141 and bonded to the first stepped surface 1121; or the colloid is applied to the first stepped surface 1121 and bonded to the first adhesive pad 141. This connection method is easy to operate and quick and convenient.

[0088] Optionally, one of the first rubber pad 141 and the first stepped surface 1121 is provided with a first positioning protrusion, and the other is provided with a first positioning groove. The first positioning protrusion and the first positioning groove cooperate with each other to achieve a detachable connection between the first rubber pad 141 and the first stepped surface 1121. When the first rubber pad 141 and the first stepped surface 1121 are connected, the first positioning protrusion is located in the first positioning groove.

[0089] It should be noted that the number of the first positioning protrusions is at least one, that is, the first positioning protrusions can be one, two or more, and the number of the first positioning protrusions can be flexibly set according to actual requirements. The number of the first positioning grooves is at least one, that is, the first positioning grooves can be one, two or more, and the first positioning grooves can be flexibly set according to actual requirements.

[0090] In a specific embodiment, a first positioning protrusion is provided on one side of the first rubber pad 141, and a first positioning groove is provided on the first stepped surface 1121. Through the mutual cooperation of the first positioning protrusion and the first positioning groove, the detachable connection between the first rubber pad 141 and the first stepped surface 1121 is realized.

[0091] In a specific embodiment, a first positioning protrusion is provided on the first stepped surface 1121, and a first positioning groove is provided on one side of the first rubber pad 141. Through the mutual cooperation of the first positioning protrusion and the first positioning groove, the detachable connection between the first rubber pad 141 and the first stepped surface 1121 is realized.

[0092] In a specific embodiment, a first card slot is provided on the first stepped surface 1121, at least a part of the first rubber pad 141 is arranged in the first card slot, and at least a part of the first rubber pad 141 is arranged outside the first card slot. The first rubber pad 141 outside the first card slot is used to abut against the backlight surface 162 of the photovoltaic tile 160.

[0093] In a specific embodiment, the first rubber pad 141 is a silicone rubber pad or an ethylene propylene diene monomer (EPDM) rubber pad, and has good chemical stability, wear resistance and weather resistance.

[0094] It should be noted that weather resistance refers to the ability of materials, products or structures to resist the long-term action of various climate factors under outdoor environmental conditions, and is the core index to measure the durability of materials in natural exposure environments.

[0095] In some embodiments, optionally, as Figure 1 、 Figure 2 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 shown, the photovoltaic system 100 further includes a second rubber pad 142. One side of the second rubber pad 142 is connected to the second stepped surface 1131, and the other side of the second rubber pad 142 abuts against the backlight surface 162 of at least one photovoltaic tile 160.

[0096] In other words, the backlight surface 162 of the photovoltaic tile 160 does not directly contact the second stepped surface 1131, and the backlight surface 162 of the photovoltaic tile 160 abuts against the second stepped surface 1131 through the second rubber pad 142.

[0097] The second rubber pad 142 is a flexible rubber pad. The stiffness of the second rubber pad 142 is less than that of the keel 110. Since the backlight surface 162 of the photovoltaic tile 160 abuts against the second stepped surface 1131 through the second rubber pad 142, the second rubber pad 142 can play a buffering role to avoid rigid contact between the photovoltaic tile 160 and the second stepped surface 1131.

[0098] It should be noted that the second rubber pad 142 has a certain elastic deformation ability, which can absorb a part of the stress generated by the thermal expansion and contraction of the photovoltaic tile 160 and the stress generated by the vibration of the wind load, which is beneficial to extending the service life of the photovoltaic system 100 and the photovoltaic tile 160.

[0099] In a specific embodiment, the second rubber pad 142 and the second stepped surface 1131 are fixedly connected by an adhesive method.

[0100] For example: apply the colloid on one side of the second rubber pad 142 and bond it with the second stepped surface 1131; or, apply the colloid on the second stepped surface 1131 and bond it with the second rubber pad 142. This connection method is easy to operate, convenient and fast.

[0101] Optionally, one of the second rubber pad 142 and the second stepped surface 1131 is provided with a second positioning protrusion, and the other is provided with a second positioning groove. Through the mutual cooperation of the second positioning protrusion and the second positioning groove, the detachable connection between the second rubber pad 142 and the second stepped surface 1131 is realized. When the second rubber pad 142 and the second stepped surface 1131 are in a connected state, the second positioning protrusion is arranged in the second positioning groove.

[0102] It should be noted that the number of the second positioning protrusions is at least one, that is, the second positioning protrusion can be one, two or more, and the number of the second positioning protrusions can be flexibly set according to actual needs. The number of the second positioning grooves is at least one, that is, the second positioning groove can be one, two or more, and the second positioning groove can be flexibly set according to actual needs.

[0103] In a specific embodiment, a second positioning protrusion is provided on one side of the second rubber pad 142, and a second positioning groove is provided on the second stepped surface 1131. Through the mutual cooperation of the second positioning protrusion and the second positioning groove, the detachable connection between the second rubber pad 142 and the second stepped surface 1131 is realized.

[0104] In a specific embodiment, a second positioning protrusion is provided on the second stepped surface 1131, and a second positioning groove is provided on one side of the second rubber pad 142. Through the mutual cooperation of the second positioning protrusion and the second positioning groove, the detachable connection between the second rubber pad 142 and the second stepped surface 1131 is realized.

[0105] In a specific embodiment, a second card slot is provided on the second stepped surface 1131, at least a part of the second rubber pad 142 is disposed in the second card slot, and at least a part of the second rubber pad 142 is disposed outside the second card slot. The second rubber pad 142 outside the second card slot is used to abut against the backlight surface 162 of the photovoltaic tile 160.

[0106] In a specific embodiment, the second rubber pad 142 is a silicone rubber pad or an ethylene propylene diene monomer (EPDM) rubber pad, which has good chemical stability, wear resistance and weather resistance.

[0107] In some embodiments, optionally, as Figure 1 、 Figure 2 and Figure 6 shown, a third protrusion 143 is provided at one end of the second rubber pad 142 close to the first stepped surface 1121. The third protrusion 143 extends in a direction away from the second stepped surface 1131. The third protrusion 143 is used to abut against at least one photovoltaic tile 160.

[0108] In a specific embodiment, the third protrusion 143 and the second rubber pad 142 are of an integral structure. Compared with the post-processing method, they have good mechanical properties and high connection strength, which is beneficial to reducing the number of parts and improving the assembly efficiency.

[0109] When installing two adjacent photovoltaic tiles 160, the backlight surface 162 of one photovoltaic tile 160 abuts against the first stepped surface 1121 through the first rubber pad 141, and the backlight surface 162 of the other photovoltaic tile 160 abuts against the second stepped surface 1131 through the second rubber pad 142.

[0110] For the photovoltaic tile 160 that abuts against the second stepped surface 1131 through the second rubber pad 142, its end portion can abut against the third protrusion 143. The third protrusion 143 is used to position the installation of the photovoltaic tile 160 to prevent the photovoltaic tile 160 from moving left and right after installation.

[0111] In a specific embodiment, the third protrusion 143 is a silicone rubber pad or an ethylene propylene diene monomer (EPDM) rubber pad, which has good chemical stability, wear resistance and weather resistance.

[0112] It should be noted that the second rubber pad 142 is provided with a bending structure, which is convenient for installing and positioning the photovoltaic system 100.

[0113] In some embodiments, optionally, as Figure 1As shown, the limiting member 120 further includes a third limiting portion 124 and a fourth limiting portion 125. One end of the third limiting portion 124 is connected to the connecting portion 121, and the other end of the third limiting portion 124 extends in a direction away from the first convex portion 112. One end of the fourth limiting portion 125 is connected to the other end of the third limiting portion 124, and the other end of the fourth limiting portion 125 extends in a direction away from the second convex portion 113, and the other end of the fourth limiting portion 125 is connected to the first limiting portion 122.

[0114] At least a part of the photovoltaic tile 160 abutting against the first stepped surface 1121 is disposed between the first limiting portion 122 and the third limiting portion 124.

[0115] When installing two adjacent photovoltaic tiles 160, the backlight surface 162 of one photovoltaic tile 160 abuts against the first stepped surface 1121 through the first rubber pad 141, and the backlight surface 162 of the other photovoltaic tile 160 abuts against the second stepped surface 1131 through the second rubber pad 142.

[0116] At least a part of the photovoltaic tile 160 abutting against the first stepped surface 1121 through the first rubber pad 141 is disposed between the first limiting portion 122 and the third limiting portion 124.

[0117] When the limiting member 120 is in a connected state with the keel 110, the connecting portion 121 abuts against the connecting side wall 1122 of the first convex portion 112. Since the third limiting portion 124 extends in a direction away from the first convex portion 112, and the fourth limiting portion 125 is used to connect the third limiting portion 124 and the first limiting portion 122, at least a part of the photovoltaic tile 160 can be directly above the connecting portion 121 and the connecting member 133 to prevent rain, snow, hail or other foreign objects from directly impacting the connecting portion 121 and the connecting member 133. Since there is a height difference between the photovoltaic tiles 160, the connecting member 133 will not be blocked due to the overlap between the photovoltaic tiles 160, which is beneficial to reducing the assembly cost and the installation cost.

[0118] Optionally, the first limiting portion 122, the fourth limiting portion 125, the third limiting portion 124, the connecting portion 121 and the second limiting portion 123 of the limiting member 120 are all plate-like structures. Moreover, the first limiting portion 122, the fourth limiting portion 125, the third limiting portion 124, the connecting portion 121 and the second limiting portion 123 are connected in sequence from top to bottom to form an approximate "S" shape.

[0119] Optionally, one side surface of the third limiting portion 124 is flush with the first stepped surface 1121. One side surface of the third limiting portion 124 is used to abut against the backlight surface 162 of the photovoltaic tile 160. The third limiting portion 124 can play a role in limiting the photovoltaic tile 160 to a certain extent.

[0120] In a specific embodiment, the connecting portion 121 is used to abut against the connecting side wall 1122, and both ends of the connecting portion 121 extend along the height direction of the first convex portion 112. One end of the third limiting portion 124 is connected to one end of the connecting portion 121, and the other end of the third limiting portion 124 extends in a direction away from the first convex portion 112. One end of the fourth limiting portion 125 is connected to the other end of the third limiting portion 124, and the other end of the fourth limiting portion 125 extends in a direction away from the second convex portion 113. The other end of the fourth limiting portion 125 is connected to one end of the first limiting portion 122. The other end of the first limiting portion 122 extends in a direction close to the first convex portion 112.

[0121] One side surface of the first limiting portion 122 is used to abut against the light-receiving surface 161 of the photovoltaic tile 160 to limit and fix the photovoltaic tile 160.

[0122] One end of the second limiting portion 123 is connected to the other end of the connecting portion 121, and the other end of the second limiting portion 123 extends in a direction away from the first convex portion 112. One side surface of the second limiting portion 123 is used to abut against the light-receiving surface 161 of the photovoltaic tile 160 to limit and fix the photovoltaic tile 160.

[0123] In a specific embodiment, the first limiting portion 122, the fourth limiting portion 125, the third limiting portion 124, the connecting portion 121, and the second limiting portion 123 are all of an integral structure, that is, the limiting member 120 is integrally formed. This design method has good mechanical properties and high connection strength, which is beneficial to reducing the number of components and improving the assembly efficiency.

[0124] In a specific embodiment, the limiting member 120 is an S-shaped pressing member.

[0125] In a specific embodiment, the limiting member 120 is an S-shaped structural member.

[0126] In a specific embodiment, the limiting member 120 is an S-shaped windproof hook. The S-shaped windproof hook is used to be connected to the purlin (keel 110) by screws.

[0127] After the S-shaped pressing member, the S-shaped structural member or the S-shaped windproof hook is connected to the keel 110, it can simultaneously press two adjacent photovoltaic tiles 160 to install the two adjacent photovoltaic tiles 160.

[0128] In some embodiments, optionally, the S-shaped pressing member is fixed to the keel 110 by screws (a kind of connecting member 133). The screws penetrate through the first convex portion 112 of the keel 110 to ensure that the screws will not twist when subjected to shear force.

[0129] In addition, the third rubber pad 144 abuts against the lower end of the photovoltaic tile 160, and the third rubber pad 144 can serve as a support point for the self-weight of the photovoltaic tile 160. The third rubber pad 144 is a flexible rubber pad, which can largely protect the photovoltaic tile 160 and make it not easily damaged.

[0130] In some embodiments, optionally, as Figure 1 shown, the third limiting portion 124, the fourth limiting portion 125 and the first limiting portion 122 enclose a first installation groove 131, and at least a part of the photovoltaic tile 160 abutting against the first stepped surface 1121 is disposed in the first installation groove 131.

[0131] When installing two adjacent photovoltaic tiles 160, the backlight surface 162 of one photovoltaic tile 160 abuts against the first stepped surface 1121 through the first rubber pad 141, and the backlight surface 162 of the other photovoltaic tile 160 abuts against the second stepped surface 1131 through the second rubber pad 142.

[0132] For the photovoltaic tile 160 abutting against the first stepped surface 1121 through the first rubber pad 141, at least a part of it is disposed in the first installation groove 131. In this design, the third limiting portion 124, the fourth limiting portion 125 and the first limiting portion 122 can envelope at least a part of the photovoltaic tile 160, which is beneficial to improving the limiting effect on the photovoltaic tile 160 to prevent the photovoltaic tile 160 from moving up and down or left and right.

[0133] In some embodiments, optionally, as Figure 1 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 shown, the photovoltaic system 100 further includes a third rubber pad 144. The third rubber pad 144 is disposed in the first installation groove 131. One side of the third rubber pad 144 is connected to the fourth limiting portion 125, and the other side of the third rubber pad 144 abuts against the photovoltaic tile 160.

[0134] In other words, the end of the photovoltaic tile 160 does not directly contact the fourth limiting portion 125, and the end of the photovoltaic tile 160 abuts against the fourth limiting portion 125 through the third rubber pad 144.

[0135] The third rubber pad 144 is a flexible rubber pad. The stiffness of the third rubber pad 144 is less than the stiffness of the keel 110. Since the photovoltaic tile 160 abuts against the fourth limiting portion 125 through the third rubber pad 144, the third rubber pad 144 can play a buffering role to avoid rigid contact between the photovoltaic tile 160 and the fourth limiting portion 125.

[0136] It should be noted that the third rubber pad 144 has a certain elastic deformation ability, which can absorb a part of the stress generated by the thermal expansion and contraction of the photovoltaic tile 160 and the stress generated by the vibration of the wind load, and is beneficial to extending the service life of the photovoltaic system 100 and the photovoltaic tile 160.

[0137] In a specific embodiment, the third rubber pad 144 and the fourth limiting part 125 are fixedly connected by an adhesive bonding method.

[0138] For example: apply the colloid on one side of the third rubber pad 144 and bond it with the fourth limiting part 125; or, apply the colloid on the fourth limiting part 125 and bond it with the third rubber pad 144. This connection method is easy to operate, convenient and fast.

[0139] Optionally, one of the third rubber pad 144 and the fourth limiting part 125 is provided with a third positioning protrusion, and the other is provided with a third positioning groove. Through the mutual cooperation of the third positioning protrusion and the third positioning groove, the detachable connection between the third rubber pad 144 and the fourth limiting part 125 is realized. When the third rubber pad 144 and the fourth limiting part 125 are in a connected state, the third positioning protrusion is arranged in the third positioning groove.

[0140] It should be noted that the number of the third positioning protrusions is at least one, that is, the third positioning protrusion can be one, two or more, and the number of the third positioning protrusions can be flexibly set according to actual needs. The number of the third positioning grooves is at least one, that is, the third positioning groove can be one, two or more, and the third positioning groove can be flexibly set according to actual needs.

[0141] In a specific embodiment, a third positioning protrusion is arranged on one side of the third rubber pad 144, and a third positioning groove is arranged on the fourth limiting part 125. Through the mutual cooperation of the third positioning protrusion and the third positioning groove, the detachable connection between the third rubber pad 144 and the fourth limiting part 125 is realized.

[0142] In a specific embodiment, a third positioning protrusion is arranged on the fourth limiting part 125, and a third positioning groove is arranged on one side of the third rubber pad 144. Through the mutual cooperation of the third positioning protrusion and the third positioning groove, the detachable connection between the third rubber pad 144 and the fourth limiting part 125 is realized.

[0143] In a specific embodiment, a third clamping groove is arranged on the fourth limiting part 125, at least a part of the third rubber pad 144 is arranged in the third clamping groove, and at least a part of the third rubber pad 144 is arranged outside the third clamping groove. The third rubber pad 144 outside the third clamping groove is used to abut against the photovoltaic tile 160.

[0144] In a specific embodiment, the third rubber pad 144 is a silicone rubber pad or an ethylene propylene diene monomer (EPDM) rubber pad, which has good chemical stability, abrasion resistance, and weather resistance.

[0145] In some embodiments, optionally, as Figure 1 shown, the third limiting portion 124, the connecting portion 121, and the second limiting portion 123 enclose a second installation groove 132.

[0146] The photovoltaic system 100 further includes a waterproof rubber strip 150. At least a part of the waterproof rubber strip 150 is disposed in the second installation groove 132.

[0147] The waterproof rubber strip 150 is used to fill the overlapping gaps in the photovoltaic system 100. At least a part of the waterproof rubber strip 150 is disposed in the second installation groove 132 to prevent impurities such as rainwater from entering the second installation groove 132 of the limiting member 120. Furthermore, it can largely prevent impurities such as rainwater from entering between the limiting member 120 and the keel 110 through the pores, which is beneficial to extending the service life of the limiting member 120 and the keel 110.

[0148] It should be noted that one side of the waterproof rubber strip 150 is used to abut against the connecting member 133 to prevent the connecting member 133 from being directly exposed to the air. By providing the waterproof rubber strip 150, the connecting member 133 can be protected to a certain extent, making the connecting member 133 not easy to rust, which is beneficial to extending the service life of the connecting member 133.

[0149] Optionally, at least two photovoltaic tiles 160 are arranged in a front-to-back overlapping manner from bottom to top, and the overlapping gaps are filled with the waterproof rubber strip 150. The waterproof rubber strip 150 has a hollow structure and has a large deformation space.

[0150] In some embodiments, optionally, the waterproof rubber strip 150 includes a hollow prism structure 151 and a waterproof lip 152, and the waterproof lip 152 is connected to the hollow prism structure 151. The hollow prism structure 151 is disposed in the second installation groove 132 to prevent impurities such as rainwater from entering the second installation groove 132 of the limiting member 120, and can also play a role in protecting the connecting member 133.

[0151] The waterproof lip 152 abuts against the light-receiving surface 161 of the photovoltaic tile 160, and the waterproof lip 152 also abuts against the second limiting portion 123. The waterproof lip 152 can prevent impurities such as rainwater from entering between the second limiting portion 123 and the light-receiving surface 161 of the photovoltaic tile 160 to a certain extent.

[0152] In a specific embodiment, the hollow prism structure 151 and the waterproof lip 152 are of an integral structure. Compared with the post-processing method, they have good mechanical properties and high connection strength, which is beneficial to reducing the number of parts and improving the assembly efficiency.

[0153] In some embodiments, optionally, when the staff performs later installation and maintenance, first remove the waterproof rubber strip 150, then unscrew the screws (a type of connecting member 133) at the corresponding positions, and then remove the limiting member 120, and the damaged photovoltaic tile 160 can be replaced.

[0154] Place the new photovoltaic tile 160 preliminarily on the keel 110, then install the limiting member 120, and install the waterproof rubber strip 150 after tightening the screws to complete the replacement of the photovoltaic tile 160.

[0155] It should be noted that in Figure 5 and Figure 6 , the photovoltaic tile 160 with a shaded cross-section indicates the damaged photovoltaic tile 160.

[0156] In the present invention, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance; the term "plural" refers to two or more unless otherwise clearly defined. Terms such as "installation", "connection", "coupling", "fixing" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "coupling" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0157] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0158] In the description of this specification, the description of terms such as "one embodiment", "some embodiments", "specific embodiments", 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 invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or instance. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0159] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A photovoltaic system, characterized in that, Comprising: Multiple photovoltaic tiles; A keel having a first stepped surface and a second stepped surface, the first stepped surface being higher than the second stepped surface, the first stepped surface abutting against the backlight surface of at least one of the photovoltaic tiles, and the second stepped surface abutting against the backlight surface of at least one of the photovoltaic tiles; At least one limiting member connected to the keel, the limiting member being used for limiting and fixing the photovoltaic tiles; The limiting member includes: A connecting portion connected to the keel through a connecting member; A first limiting portion connected to the connecting portion, the first limiting portion pressing against the light-receiving surface of at least one of the photovoltaic tiles; A second limiting portion connected to the connecting portion, the second limiting portion pressing against the light-receiving surface of at least one of the photovoltaic tiles.

2. The photovoltaic system according to claim 1, characterized in that, The keel includes: A main load-bearing member; A first protruding portion connected to the main load-bearing member; A second protruding portion connected to the main load-bearing member, the height of the second protruding portion being less than the height of the first protruding portion, and the second protruding portion, the first protruding portion and the main load-bearing member form a stepped structure; The first stepped surface is provided on the side of the first protruding portion away from the main load-bearing member; the second stepped surface is provided on the side of the second protruding portion away from the main load-bearing member; One side of the first protruding portion close to the second protruding portion has a connecting side wall; the connecting portion abuts against the connecting side wall, and the connecting member passes through the connecting portion and the connecting side wall.

3. The photovoltaic system according to claim 2, characterized in that, A drainage groove is provided on the keel, and the drainage groove is provided between the first protruding portion and the second protruding portion.

4. The photovoltaic system according to any one of claims 1 to 3, characterized in that Further comprising: A first rubber pad, one side of the first rubber pad is connected to the first stepped surface, and the other side of the first rubber pad abuts against the backlight surface of at least one of the photovoltaic tiles.

5. The photovoltaic system according to any one of claims 1 to 3, characterized in that, Further comprising: A second rubber pad, one side of the second rubber pad is connected to the second stepped surface, and the other side of the second rubber pad abuts against the backlight surface of at least one of the photovoltaic tiles.

6. The photovoltaic system according to claim 5, characterized in that, A third protruding portion is provided at one end of the second rubber pad close to the first stepped surface, and the third protruding portion extends in a direction away from the second stepped surface, and the third protruding portion is used for abutting against at least one of the photovoltaic tiles.

7. The photovoltaic system according to claim 2 or 3, characterized in that, The limiting member further includes: A third limiting portion, one end of the third limiting portion is connected to the connecting portion, and the other end of the third limiting portion extends in a direction away from the first protruding portion; A fourth limiting portion, one end of the fourth limiting portion is connected to the other end of the third limiting portion, and the other end of the fourth limiting portion extends in a direction away from the second protruding portion, and the other end of the fourth limiting portion is connected to the first limiting portion; At least a part of the photovoltaic tile abutting against the first stepped surface is disposed between the first limiting portion and the third limiting portion.

8. The photovoltaic system according to claim 7, wherein The third limiting portion, the fourth limiting portion and the first limiting portion enclose a first installation groove, and at least a part of the photovoltaic tile abutting against the first stepped surface is disposed in the first installation groove.

9. The photovoltaic system according to claim 8, characterized in that, Further comprising: A third rubber pad disposed in the first installation groove, one side of the third rubber pad is connected to the fourth limiting portion, and the other side of the third rubber pad abuts against the photovoltaic tile.

10. The photovoltaic system according to claim 7, characterized in that, The third limiting portion, the connecting portion, and the second limiting portion enclose a second installation groove; The photovoltaic system further includes: A waterproof rubber strip, at least a part of the waterproof rubber strip is disposed in the second installation groove.

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