Photovoltaic roof system

Abstract

The photovoltaic roof system comprises a metal tile, the metal tile is provided with a base part and a supporting part, the base part is located below a photovoltaic module, the supporting part extends from the end of the base part to the direction of the photovoltaic module, and the supporting part is provided with a containing groove; the pressing block is provided with an abutting section and a main body section, the abutting section is bent and extends from the main body section to the supporting part of the metal tile, so that the abutting section of the pressing block abuts against the supporting part of the metal tile, the main body section is provided with a through hole, the through hole and the containing groove are oppositely arranged, and the pressing block and the supporting part of the metal tile are connected through a fastener. The pressing block and the supporting part of the metal tile are connected through the fastener, so that the photovoltaic module is reliably clamped between the main body section of the pressing block and the supporting part of the metal tile, and further, the supporting part of the pressing block and the supporting part of the metal tile are separated by detaching the fastener, so that the photovoltaic module is conveniently and quickly detached and replaced, and later operation and maintenance are facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building integrated photovoltaics, and particularly to a photovoltaic roof system. BACKGROUND

[0002] Building integrated photovoltaics (BIPV) uses photovoltaic components as building components or building materials, so that they become part of the building and also have power generation functions. BIPV can avoid occupying too much land resources, which is particularly important for urban buildings where land is expensive. BIPV converts solar energy into electrical energy, which can reduce outdoor integrated temperature, and can also play a peak shaving role for the power grid, achieving the effect of building energy saving.

[0003] In related technologies, a structural adhesive is used to bond the photovoltaic component to the metal tile. However, the bonding process has high requirements for the construction environment, and the bonding method is not conducive to the disassembly and replacement of the photovoltaic component, which affects the later operation and maintenance. SUMMARY

[0004] One or more embodiments of the present application provide a photovoltaic roof system to solve or at least partially alleviate the problem of the photovoltaic component not being easily disassembled and replaced in related technologies.

[0005] One or more embodiments of the present application provide a photovoltaic roof system, which uses the following technical solution:

[0006] A photovoltaic roof system includes a metal tile, the metal tile is provided with a base and a support portion, the base is located below a photovoltaic component, the support portion extends from an end of the base to the photovoltaic component, and the support portion is provided with a receiving groove; a pressing block, the pressing block is provided with an abutting section and a main body section, the abutting section is bent and extended from the main body section to the support portion of the metal tile, so that the abutting section of the pressing block abuts against the support portion of the metal tile, the main body section is provided with a through hole, the through hole and the receiving groove are oppositely arranged, and the pressing block and the support portion of the metal tile are connected by a fastener.

[0007] In some embodiments, the support portion includes a first platform section, a second platform section, and a fixed section, both ends of the fixed section are connected to the first platform section and the second platform section, the fixed section is concavely formed in a direction deviating from the photovoltaic component, the receiving groove is formed in the fixed section, the receiving groove is suitable for connection of the fastener, and the second platform section supports the abutting section of the pressing block.

[0008] In some embodiments, the photovoltaic roofing system further comprises a rubber pad, the pressing block is provided with a mounting groove formed on one side of the pressing block, the abutting section is arranged on the other side of the pressing block, the mounting groove faces the first platform section, and the rubber pad is mounted in the mounting groove so that the rubber pad contacts the surface of the photovoltaic module.

[0009] In some embodiments, the photovoltaic roofing system further comprises a buffer arranged on the surface of the first platform section to support the back surface of the photovoltaic module, so that the end of the photovoltaic module is clamped between the rubber pad and the buffer.

[0010] In some embodiments, the supporting part is symmetrically and integrally connected to both ends of the base to carry the pressing blocks at both ends of the photovoltaic module.

[0011] In some embodiments, the photovoltaic roofing system further comprises an intermediate support adapted to be fixed to the building surface; the metal tile further comprises a boss part integrally connected to the base and bent and protruding towards the photovoltaic module; the boss part is adapted to be embeddedly connected with the intermediate support to connect the metal tile to the building surface, and the upper surface of the boss part is adapted to be attached to the photovoltaic module to support the photovoltaic module.

[0012] In some embodiments, the metal tile comprises at least two boss parts, the at least two boss parts are arranged at intervals along the extension direction of the base, so that the metal tile is connected to the intermediate support fixed to the building surface through each boss part, and the upper surface of each boss part is adapted to be attached to the photovoltaic module to support the photovoltaic module.

[0013] In some embodiments, the photovoltaic roofing system further comprises a boat-shaped support adapted to be fixed to the building surface, and the top surface of the boat-shaped support has a hook part; the metal tile further comprises a locking edge part connected to the side of the supporting part away from the base, and the locking edge part of the metal tile is adapted to be hooked and fixed with the hook part of the boat-shaped support to connect the end of the metal tile to the boat-shaped support.

[0014] In some embodiments, the metal tile further comprises a connecting part obliquely connecting the base and the supporting part, so that at least part of the supporting part is placed on the top surface of the boat-shaped support.

[0015] In some embodiments, the through hole of the pressing block is a waist-shaped hole extending along the extension direction of the main body section.

[0016] Compared with the related art, one or more embodiments of the present application include at least one of the following beneficial technical effects:

[0017] The support part of the metal tile is connected with the pressing block by the fastener, so that the photovoltaic module is reliably clamped between the main body section of the pressing block and the support part of the metal tile. Further, the pressing block and the support part of the metal tile are separated by disassembling the fastener, so that the photovoltaic module can be quickly disassembled and replaced, and the later operation and maintenance are facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present application, and are not a limitation on the present application.

[0019] Figure 1 A schematic diagram of a photovoltaic roof system according to some embodiments of the present application.

[0020] Figure 2 A schematic diagram of a metal tile according to some embodiments of the present application. Figure 1 An enlarged view of part A in the middle.

[0021] Figure 3 A schematic diagram of a pressing block according to some embodiments of the present application. Figure 1 An enlarged view of part B in the middle.

[0022] Figure 4 A schematic diagram of an intermediate support according to some embodiments of the present application.

[0023] Figure 5 A schematic diagram of a boat-shaped support according to some embodiments of the present application. Figure 4 An enlarged view of part C in the middle.

[0024] Figure 6 An enlarged view of part D in the middle. Figure 4

[0025] An enlarged view of part D in the middle. Figure 7

[0026] Figure 8

[0027] Figure 9

[0028] ​​​In the figure: 10, metal tile; 11, base; 12, connecting part; 13, supporting part; 131, first platform section; 132, second platform section; 133, fixed section; 134, accommodating groove; 1341, communication port; 1342, accommodating space; 14, edge locking part; 15, boss part; 16, cavity; 20, pressing block; 21, abutting section; 22, main body section; 221, mounting groove; 222, through hole; 30, fastener; 31, head; 32, threaded part; 40, rubber pad; 50, buffer; 60, intermediate support; 70, boat-shaped support; 71, hook part; 80, photovoltaic module. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings which show the embodiments according to the present application. It should be understood that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments described in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort shall fall within the scope of protection of the present application.

[0030] Unless otherwise defined, all technical and scientific terms used in the present application have the same meanings as commonly understood by one of ordinary skill in the art to which the present application belongs; the terms used in the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "include", "contain", "have", "with", "contain", "contain" and the like in the specification and claims of the present application and the above description of drawings are open-ended terms. Therefore, a method or device "including", "containing", "having" one or more steps or elements has one or more steps or elements, but is not limited to only having the one or more elements.

[0031] In the description of the present application, it should be understood that the terms "center", "transverse", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0032] In the description of the present application, it should be noted that unless specifically stated and limited otherwise, the terms "mounting", "connected", "connection", "attached" should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be directly connected, or indirectly connected through an intermediate medium, can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0033] Figure 1 Schematic diagram of a photovoltaic roofing system according to some embodiments of the present application.

[0034] One or more embodiments of the present application disclose a photovoltaic roofing system. Referring to Figures 1 to 6 , the photovoltaic roofing system comprises a metal tile 10 and a pressing block 20. The metal tile 10 is provided with a base 11 located below a photovoltaic module 80 and a supporting portion 13 extending from an end of the base 11 towards the photovoltaic module 80, the supporting portion 13 being provided with a receiving groove 134. The pressing block 20 is provided with an abutting section 21 and a main body section 22, the abutting section 21 being bent and extended from the main body section 22 towards the supporting portion 13 of the metal tile 10, so that the abutting section 21 of the pressing block 20 abuts against the supporting portion 13 of the metal tile 10, the main body section 22 being provided with a through hole 222, the through hole 222 and the receiving groove 134 being oppositely arranged, and the pressing block 20 and the supporting portion 13 of the metal tile 10 are connected by a fastener 30.

[0035] It can be understood that the pressing block 20 and the supporting portion 13 of the metal tile 10 are connected by the fastener 30, so that the photovoltaic module 80 can be reliably clamped between the main body section 22 of the pressing block 20 and the supporting portion 13 of the metal tile 10. Further, by disassembling the fastener 30, the pressing block 20 and the supporting portion 13 of the metal tile 10 can be separated, so as to quickly disassemble and replace the photovoltaic module 80, which is beneficial to the later operation and maintenance.

[0036] In some embodiments, referring to Figure 2 and Figure 5 , the supporting portion 13 comprises a first platform section 131, a second platform section 132 and a fixing section 133, two ends of the fixing section 133 being connected to the first platform section 131 and the second platform section 132, the fixing section 133 being concavely formed in a direction deviating from the photovoltaic module 80, the receiving groove 134 being formed in the fixing section 133, the receiving groove 134 being adapted to the connection of the fastener 30, and the second platform section 132 being capable of supporting the abutting section 21 of the pressing block 20.

[0037] Specifically, referring to Figure 2 , under the condition that the abutting section 21 of the pressing block 20 abuts against the second platform section 132 of the metal tile 10, the main body section 22 extends from an end of the abutting section 21 towards the photovoltaic module 80, i.e. along Figure 2extends in the horizontal direction, and further makes at least part of the main body section 22 oppositely spaced apart from the first platform section 131 of the metal tile 10 along the thickness direction of the photovoltaic module 80, i.e., along the direction perpendicular to the plane of the photovoltaic module 80. Figure 2 extends in the vertical direction, and further makes the photovoltaic module 80 clamped between the main body section 22 of the pressing block 20 and the first platform section 131 of the metal tile 10.

[0038] In at least one embodiment, referring to Figure 2 and Figure 5 , the accommodating groove 134 comprises a communicating opening 1341 and an accommodating space 1342. Specifically, the fixed section 133 is concave in the direction away from the photovoltaic module 80 to form a “convex” accommodating groove 134, the accommodating space 1342 of the accommodating groove 134 is located at the side of the supporting part 13 away from the photovoltaic module 80, and the communicating opening 1341 is located between the first platform section 131 and the second platform section 132, and is adapted to communicate with the outside of the accommodating space 1342. Further, along the extension direction of the supporting part 13, i.e., along the horizontal direction, the size of the accommodating space 1342 is greater than the size of the communicating opening 1341, so that the head 31 of the fastener 30 is adapted to be embedded in the accommodating space 1342, and the threaded section 32 of the fastener 30 is adapted to extend towards the pressing block 20 through the communicating opening 1341 and pass through the through hole 222 on the main body section 22 of the pressing block 20, and further connect the pressing block 20 and the metal tile 10 through the fastener 30. Figure 5

[0039] In some embodiments, referring to Figure 4 , the supporting part 13 is symmetrically and integrally connected to both ends of the base part 11 to carry the pressing blocks 20 at both ends of the photovoltaic module 80. That is, the metal tile 10 has a supporting part 13 at each end to support and fix the opposite two sides of the photovoltaic module 80 through the supporting parts 13.

[0040] In at least one embodiment, the metal tile 10 is of a 1191mm tile type to adapt to the 2382mm×1128mm specification of the photovoltaic module 80, i.e., the metal tile 10 is adapted to the conventional photovoltaic module 80 to avoid customizing special specifications of the photovoltaic module 80 to adapt to the metal tile 10. Among them, the metal tile 10 is pressed from a 1500mm steel coil, and the tile yield can reach 79.4%, which is beneficial to reduce the cost of the metal tile 10.

[0041] In at least one embodiment, the photovoltaic module 80 is implemented as a frameless module to avoid the obstruction of the frame to facilitate the dust on the front of the photovoltaic module 80 to be washed away by rainwater, reduce the risk of hot spot effect of the photovoltaic module 80 caused by dust, improve the power generation of the photovoltaic roof system, and improve the reliability of the photovoltaic roof system.

[0042] ​In at least one embodiment, referring to Figure 1 and Figure 2 , the long side of the photovoltaic module 80 is adapted to be clamped between the main body section 22 of the pressing block 20 and the supporting portion 13 of the metal tile 10, so that the long side of the photovoltaic module 80 is rested on the first platform section 131 of the supporting portion 13, and then the metal tile 10 supports the long side of the photovoltaic module 80, which is beneficial to avoid the long side of the photovoltaic module 80 being suspended, and then the load capacity and the anti-treading performance of the photovoltaic module 80 are improved, so that the engineers can tread on the photovoltaic module 80 during installation and later operation and maintenance, which is beneficial to avoid leaving an additional operation and maintenance channel, and is beneficial to make the photovoltaic module 80 cover the building surface.

[0043] In some embodiments, referring to Figure 2 and Figure 7 , the photovoltaic roof system further comprises the rubber pad 40, the pressing block 20 is provided with the installation groove 221 formed on one side of the pressing block 20, the abutting section 21 is arranged on the other side of the pressing block 20, the installation groove 221 faces the first platform section 131, and the rubber pad 40 is installed in the installation groove 221, so that the rubber pad 40 contacts the surface of the photovoltaic module 80.

[0044] That is, the pressing block 20 is adapted to keep flexible contact between the rubber pad 40 and the upper surface of the photovoltaic module 80, which is beneficial to reduce the risk of the photovoltaic module 80 being cracked or even damaged due to excessive fastening force. In addition, the friction between the pressing block 20 and the photovoltaic module 80 is increased by the rubber pad 40, and the reliability of the photovoltaic module 80 being clamped between the pressing block 20 and the metal tile 10 is improved.

[0045] In some embodiments, referring to Figure 2 , the photovoltaic roof system further comprises the buffer 50 arranged on the surface of the first platform section 131, which supports the back surface of the photovoltaic module 80, so that the end of the photovoltaic module 80 is clamped between the rubber pad 40 and the buffer 50. That is, the supporting portion 13 of the metal tile 10 is adapted to keep flexible contact between the buffer 50 and the lower surface of the photovoltaic module 80, which is beneficial to reduce the risk of the photovoltaic module 80 being cracked or even damaged due to excessive fastening force. Further, the friction between the metal tile 10 and the photovoltaic module 80 is increased by the buffer 50, and the reliability of the photovoltaic module 80 being clamped between the pressing block 20 and the metal tile 10 is improved. In addition, the buffer 50 also plays a buffering role, which is beneficial to avoid hard contact, direct impact and collision between the photovoltaic module 80 and the metal tile 10, and further improve the anti-treading performance of the photovoltaic module 80, so that the engineers can tread on the photovoltaic module 80 during installation and later operation and maintenance, which is beneficial to avoid leaving an additional operation and maintenance channel. It is worth mentioning that the material of the buffer 50 includes but is not limited to silicone, rubber and foam, which is not limited in the present application.

[0046] In some embodiments, referring to Figure 3 , Figure 6 and Figure 8 , the photovoltaic roofing system further comprises intermediate supports 60 adapted to be fixed on the building surface; the metal tile 10 further comprises a boss portion 15 integrally connected to the base portion 11 and bent and protruded towards the photovoltaic module 80; the boss portion 15 is adapted to be embeddedly connected with the intermediate support 60 so that the metal tile 10 is connected to the building surface, and the upper surface of the boss portion 15 is adapted to be attached to the photovoltaic module 80 to support the photovoltaic module 80, which is advantageous to avoid the middle part of the photovoltaic module 80 being completely suspended and to improve the support reliability of the metal tile 10 to the photovoltaic module 80. It should be understood that the embedded connection of the boss portion 15 and the intermediate support 60 is advantageous to improve the connection strength and reliability of the metal tile 10 to the building surface, and further to improve the wind resistance performance of the metal tile 10 and the safety of the photovoltaic roofing system.

[0047] It is worth mentioning that the upper surface of the boss portion 15 can also be provided with a buffer 50, so that the boss portion 15 is adapted to be in flexible contact with the lower surface of the photovoltaic module 80 through the buffer 50. In addition, the buffer 50 also serves as a buffer, which is advantageous to avoid the hard contact, direct impact and collision between the photovoltaic module 80 and the metal tile 10, and further to improve the anti-treading performance of the photovoltaic module 80.

[0048] In some embodiments, referring to Figure 1 and Figure 4 , the metal tile 10 comprises at least two boss portions 15, which are spaced apart along the extension direction of the base portion 11, i.e. along the horizontal direction in Figure 1 , so that the metal tile 10 is connected with the intermediate support 60 fixed on the building surface through each boss portion 15, and the upper surface of each boss portion 15 is adapted to be attached to the photovoltaic module 80 to support the photovoltaic module 80.

[0049] It should be understood that, under the condition that the long edges of the photovoltaic module 80 are clamped between the main body section 22 of the pressing block 20 and the support portion 13 of the metal tile 10, the at least two boss portions 15 are spaced apart along the short edge direction of the photovoltaic module 80, which is advantageous to support the middle region of the photovoltaic module 80 and to avoid the overlarge suspended span of the photovoltaic module 80, and further to improve the anti-treading performance of the photovoltaic module 80.

[0050] It is worth mentioning that, referring to Figure 1 and Figure 4 , the base portion 11 of the metal tile 10 is spaced apart from the photovoltaic tile, i.e. along the vertical direction in Figure 1The vertical direction intervals in the metal tile 10 are arranged to form cavities 16 between the adjacent boss portions 15 and the support portions 13 and between the adjacent two boss portions 15, so that the cavities 16 can play a role of drainage, and the problems of water accumulation, water seepage and water leakage of the photovoltaic roof system can be avoided.

[0051] In at least one embodiment, the distance between the base 11 of the metal tile 10 and the photovoltaic tile is 32 mm, i.e., the height of the cavity 16 is 32 mm, so that the photovoltaic roof system has excellent drainage performance.

[0052] In some embodiments, as shown in Figure 2 and Figure 9 , the photovoltaic roof system further comprises a boat-shaped support 70 adapted to be fixed on the building surface, and the top surface of the boat-shaped support 70 has a hook portion 71; the metal tile 10 further comprises a locking edge portion 14 connected to the side of the support portion 13 away from the base 11, and the locking edge portion 14 of the metal tile 10 is adapted to be hooked and fixed with the hook portion 71 of the boat-shaped support 70, so that the end of the metal tile 10 is connected to the boat-shaped support 70. That is, the locking edge portions 14 of the adjacent two metal tiles 10 are adapted to be hooked and fixed with the hook portion 71 of a boat-shaped support 70, so that the adjacent two metal tiles 10 are connected and fixed, and the metal tile 10 and the boat-shaped support 70 are connected and fixed.

[0053] It is worth mentioning that if the clamp is arranged at the locking edge position of the metal tile 10 and the boat-shaped support 70, due to the large error of the locking edge construction, the distance between the adjacent two locking edge positions may be far away from the preset distance, thereby causing the problem that the photovoltaic module 80 is difficult to install. In the present embodiment, as described above, the receiving groove 134 of the support portion 13 of the metal tile 10 can accommodate the head 31 of the fastener 30, and the metal tile 10 and the pressing block 20 are connected through the fastener 30, so that the photovoltaic module 80 is clamped between the pressing block 20 and the support portion 13, which can avoid the influence of the locking edge construction on the distance between the two receiving grooves 134 on the metal tile 10, thereby reducing the installation difficulty of the photovoltaic module 80, and further improving the construction convenience and efficiency of the photovoltaic roof system.

[0054] In some embodiments, as shown in Figure 2 and Figure 7 , the through hole 222 of the pressing block 20 is a waist-shaped hole extending along the extension direction of the main body segment 22, i.e., extending along the horizontal direction in Figure 2 , so that the pressing block 20 is adapted to move along the horizontal direction in Figure 2 . That is, the pressing block 20 is adapted to move towards or away from the photovoltaic module 80, so as to adjust the distance between the photovoltaic module 80 and the relative two pressing blocks 20, thereby further reducing the installation difficulty of the photovoltaic module 80.

[0055] In some embodiments, such as Figure 2 and Figure 4 As shown, the metal tile 10 also includes a connecting portion 12, which obliquely connects the base 11 and the support portion 13, such that at least a portion of the support portion 13 rests on the top surface of the boat-shaped support 70. Specifically, with the base 11 of the metal tile 10 resting on the building surface, the connecting portion 12 obliquely connects the base 11 and the support portion 13, such that the second platform section 132 of the support portion 13 rests on the top surface of the boat-shaped support 70. Furthermore, under the condition that the abutting section 21 of the pressure block 20 abuts against the second platform section 132, it is beneficial to avoid deformation of the second platform section 132 under stress, thereby further improving the connection reliability between the pressure block 20 and the metal tile 10.

[0056] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A photovoltaic roofing system, characterized by, The metal tile comprises a base and a supporting part, the base is located below the photovoltaic module, the supporting part extends from the end of the base to the direction of the photovoltaic module, and the supporting part is provided with a receiving groove. The pressing block comprises an abutting segment and a main body segment, the abutting segment is bent and extended from the main body segment to the direction of the supporting part of the metal tile, so that the abutting segment of the pressing block abuts against the supporting part of the metal tile, and the main body segment is provided with a through hole, the through hole and the receiving groove are oppositely arranged, and the pressing block and the supporting part of the metal tile are connected through a fastener. The supporting part comprises a first platform segment, a second platform segment and a fixing segment, two ends of the fixing segment are connected with the first platform segment and the second platform segment, the fixing segment is concave-shaped in the direction deviating from the photovoltaic module, the receiving groove is formed in the fixing segment, the receiving groove is suitable for the connection of the fastener, and the second platform segment supports the abutting segment of the pressing block.

2. The photovoltaic roofing system of claim 1, wherein, Further comprising a rubber pad, the pressing block is provided with a mounting groove, the mounting groove is formed on one side of the pressing block, the abutting segment is arranged on the other side of the pressing block, the mounting groove faces the first platform segment, and the rubber pad is mounted in the mounting groove, so that the rubber pad contacts the surface of the photovoltaic module.

3. The photovoltaic roofing system of claim 2, wherein, Further comprising a buffer, the buffer is arranged on the surface of the first platform segment, so as to support the back surface of the photovoltaic module, and the end of the photovoltaic module is clamped between the rubber pad and the buffer.

4. The photovoltaic roofing system of claim 3, wherein, The supporting part is symmetrically and integrally connected to the two ends of the base, so as to carry the pressing blocks at the two ends of the photovoltaic module.

5. The photovoltaic roofing system of any of claims 1-4, wherein, The photovoltaic roof system further comprises an intermediate support which is suitable for being fixed on the building surface; the metal tile further comprises a boss part which is integrally connected to the base and protrudes and bends in the direction of the photovoltaic module; the boss part is suitable for being embeddedly connected with the intermediate support which is fixed on the building surface, so that the metal tile is connected to the building surface, and the upper surface of the boss part is suitable for being attached to the photovoltaic module, so as to support the photovoltaic module.

6. The photovoltaic roofing system of any of claims 1-4, wherein, The metal tile comprises at least two boss parts, the at least two boss parts are arranged at intervals along the extension direction of the base, so that the metal tile is connected with the intermediate support which is fixed on the building surface through the boss parts, and the upper surfaces of the boss parts are suitable for being attached to the photovoltaic module, so as to support the photovoltaic module.

7. The photovoltaic roofing system of claim 6, wherein, The photovoltaic roof system further comprises a boat-shaped support which is suitable for being fixed on the building surface, and the top surface of the boat-shaped support has a hook part; the metal tile further comprises a locking edge part which is connected to the side of the supporting part away from the base, the locking edge part of the metal tile is suitable for being hooked and fixed with the hook part of the boat-shaped support, so that the end of the metal tile is connected to the boat-shaped support.

8. The photovoltaic roofing system of any of claims 1-4, wherein, The metal tile further comprises a connecting part which is obliquely connected with the base and the supporting part, so that at least part of the supporting part is placed on the top surface of the boat-shaped support.

9. The photovoltaic roofing system of claim 8, wherein, The through hole of the pressing block is a waist-shaped hole which extends along the extension direction of the main body segment.

10. The photovoltaic roofing system of any of claims 1-4, wherein, ​

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