Photovoltaic roof system

Abstract

The embodiment of the utility model provides a photovoltaic roof system which comprises a base plate, the base plate comprises a main body part and an installation part, the main body part is suitable for being installed on the surface of a building, and the installation part is located on the side, facing a photovoltaic assembly, of the main body part in the first direction; the mounting part is used for supporting the photovoltaic module so that the photovoltaic module and the substrate can be arranged in a spaced mode in the first direction, the mounting part is provided with a fixing part and a clamping part, the fixing part is suitable for being connected with the mounting part in a hooked mode, the clamping part is located on the side, facing the photovoltaic module, of the fixing part in the first direction, and the clamping part can clamp the photovoltaic module. Therefore, the photovoltaic module can be clamped on the clamping part of the mounting piece, and further, the fixing part of the mounting piece is hooked and fixed with the substrate, so that the installation of the photovoltaic roof system is simpler and more convenient, and the improvement of the installation efficiency is facilitated. The photovoltaic module and the substrate are arranged at an interval along the first direction by the mounting piece, so that the heat dissipation efficiency of the photovoltaic module is improved, and the photovoltaic module can keep higher generating capacity.

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, making them part of the building and having 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 play a peak shaving role for the power grid, achieving building energy saving effects.

[0003] In related technologies, photovoltaic components are installed on the roof using a rail bracket, which has the following defects: the photovoltaic components are bonded to the rail bracket, making it difficult for the photovoltaic components to dissipate heat effectively, thereby reducing system power generation. CONTENT OF THE INVENTION

[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 components being difficult to dissipate heat effectively 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 substrate including a main body portion and a mounting portion, the main body portion being adapted to be mounted on a building surface, and the mounting portion being located on a side of the main body portion facing the photovoltaic component in a first direction; a mounting member adapted to support the photovoltaic component so that the photovoltaic component and the substrate are spaced apart in the first direction, the mounting member being provided with a fixing portion and a clamping portion, the fixing portion being adapted to be coupled to the mounting portion, and the clamping portion being located on a side of the fixing portion facing the photovoltaic component in the first direction, the clamping portion being adapted to clamp the photovoltaic component.

[0007] In some embodiments, the substrate is provided with one mounting portion at each end in a second direction to support the photovoltaic component, and each mounting portion includes a coupling segment that is bent and extends from the main body portion toward the photovoltaic component to be coupled to the fixing portion of the mounting member.

[0008] In some embodiments, the fixing portion of the mounting member is provided with a hook groove that is adapted to be coupled to the coupling segment to couple the mounting member to the substrate.

[0009] In some embodiments, the mounting portion further comprises a limiting segment, two of which extend from the main body portion towards the photovoltaic module and are spaced apart along the second direction to define a limiting groove therebetween, the limiting groove being adapted to receive the fixing portion of the mounting member; the hooking segment is located between the two limiting segments.

[0010] In some embodiments, the mounting portion further comprises a supporting platform, which is located on a side of the main body portion facing the photovoltaic module along the first direction, a top surface of the supporting platform being spaced apart from the main body portion along the first direction to define a cavity therebetween; the cavity is adapted to receive an end of the fastener when the mounting member, the photovoltaic module and the supporting platform are sequentially penetrated by the fastener for connection and fixation.

[0011] In some embodiments, the substrate further comprises a receiving portion, which is located on a side of the main body portion facing the photovoltaic module, the receiving portion being provided with a receiving groove, the receiving groove being adapted to receive a connector of the photovoltaic module; the receiving portion further comprises a baffle, which extends from a groove wall of the receiving groove into the receiving groove to shield an opening of the receiving groove and keep a cable of the connector within the receiving groove.

[0012] In some embodiments, the substrate is provided with a connecting rib at each end thereof along the second direction, the connecting rib being located on a side of the main body portion facing the photovoltaic module, the connecting rib being adapted to connect two adjacent substrates.

[0013] In some embodiments, the photovoltaic roofing system further comprises a connecting member, the connecting member being adapted to cover two connecting ribs on two adjacent substrates to connect the two adjacent substrates.

[0014] In some embodiments, the connecting rib is bent from the main body portion to define an auxiliary cavity between the connecting rib and the main body portion, the photovoltaic roofing system further comprises a spacer, at least a portion of the spacer being received in the auxiliary cavity to clamp the connecting rib between the connecting member and the spacer, the spacer being located opposite to the connecting member along the first direction, such that the spacer and the connecting member are adapted to be connected and fixed by a fastener.

[0015] In some embodiments, the connecting rib comprises a first folded section and a second folded section, the first folded section is bent from the main body to form the auxiliary cavity, the second folded section is connected to the first folded section and extends towards the first folded section; the pad comprises a filling part and an extending part, the filling part is adapted to be accommodated in the auxiliary cavity, the filling part is provided with a connecting groove adapted to be engaged with the second folded section of the connecting rib to fix the pad and the connecting rib, the extending part is connected to the filling part and extends out of the auxiliary cavity; the connecting member comprises a middle section, a top section and an extending section, when the connecting member is installed on the substrate, the middle section is filled between two adjacent connecting ribs, the top section extends from the end of the middle section away from the substrate to cover the first folded section of the two adjacent connecting ribs, the extending section is connected to the top section and is arranged opposite to the extending part of the pad in a first direction, so that the extending section and the extending part are adapted to be connected and fixed by a fastener.

[0016] In some embodiments, the photovoltaic roofing system further comprises a covering member adapted to cover the connecting rib on the substrate.

[0017] In some embodiments, the photovoltaic roofing system further comprises a waterproof plate adapted to be lapped between the connecting rib and the mounting part.

[0018] In some embodiments, the clamping part of the mounting member has a clamping cavity with an opening facing the photovoltaic module, the clamping cavity is adapted to accommodate the edge of the photovoltaic module; the photovoltaic roofing system further comprises a pad strip adapted to be accommodated in the clamping cavity to be spaced between the clamping part and the photovoltaic module.

[0019] In some embodiments, the photovoltaic roofing system further comprises a waterproof cap adapted to cover the head of the fastener to shield the fastener when the mounting member, the photovoltaic module and the substrate are sequentially penetrated by the fastener to be connected and fixed.

[0020] Compared with the related art, one or more embodiments of the present application include at least one of the following beneficial effects:

[0021] (1) The photovoltaic module is clamped in the clamping part of the mounting member, further, the fixing part of the mounting member is engaged and fixed with the substrate, so that the installation of the photovoltaic roofing system is more convenient, which is beneficial to improve the installation efficiency.

[0022] (2) The mounting member is adapted to space the photovoltaic module and the substrate in a first direction, so as to improve the heat dissipation efficiency of the photovoltaic module, which is beneficial to avoid the hot spot phenomenon, and further to keep the photovoltaic module at a higher power generation capacity. BRIEF DESCRIPTION OF DRAWINGS

[0023] 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 as follows. Obviously, the drawings in the following description are only some embodiments of the present application and not limit the present application.

[0024] Figure 1 A schematic view of a top surface of a substrate according to some embodiments of the present application.

[0025] Figure 2 A schematic view of a top surface of a substrate according to some embodiments of the present application.

[0026] Figure 3 A schematic view of a top surface of a substrate according to some embodiments of the present application.

[0027] Figure 4 A schematic view of a side surface of a substrate according to some embodiments of the present application.

[0028] Figure 5 A schematic view of a side surface of a substrate according to some embodiments of the present application. Figure 4 An enlarged view of part A in FIG. 6.

[0029] Figure 6 An enlarged view of part B in FIG. 6. Figure 4 An enlarged view of part C in FIG. 6.

[0030] Figure 7 An enlarged view of part D in FIG. 6. Figure 4 An enlarged view of part E in FIG. 6.

[0031] Figure 8 An enlarged view of part F in FIG. 6. Figure 4 An enlarged view of part G in FIG. 6.

[0032] Figure 9 A schematic view of a side surface of a substrate according to some embodiments of the present application.

[0033] Figure 10 An enlarged view of part H in FIG. 6. Figure 9 An enlarged view of part I in FIG. 6.

[0034] Figure 11 An enlarged view of part J in FIG. 6. Figure 9 An enlarged view of part K in FIG. 6.

[0035] Figure 12 An enlarged view of part L in FIG. 6. Figure 9 An enlarged view of part M in FIG. 6.

[0036] Figure 13 An enlarged view of part N in FIG. 6. Figure 9 An enlarged view of part O in FIG. 6.

[0037] Figure 14 A schematic view of a mounting according to some embodiments of the present application.

[0038] Figure 15 A schematic view of a spacer according to some embodiments of the present application.

[0039] Figure 16 A schematic view of a connector according to some embodiments of the present application.

[0040] Figure 17 A schematic view of a cover according to some embodiments of the present application.

[0041] In the figure: 10, a substrate; 11, a main body; 12, a mounting portion; 121, a hooking section; 122, a limiting section; 1221, a limiting groove; 123, a supporting platform; 124, a cavity; 125, a boss; 13, a receiving portion; 131, a receiving groove; 132, a baffle; 14, a connecting rib; 141, an auxiliary cavity; 142, a first folding section; 143, a second folding section; 20, a mounting member; 21, a fixing portion; 211, a hooking groove; 22, a clamping portion; 221, a clamping cavity; 30, a connecting member; 31, a middle section; 32, a top section; 321, a notch; 33, an extending section; 40, a spacer; 41, a filling portion; 411, a connecting groove; 42, an extending portion; 50, a cover; 61, a waterproof plate; 62, a waterproof cap; 70, a spacer strip; 81, a first fastener; 82, a second fastener; 90, a photovoltaic assembly; 91, a photovoltaic panel; 92, a wire box; 93, a connector. DETAILED DESCRIPTION

[0042] In order to make the objectives, 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 with reference to the accompanying drawings which show multiple embodiments according to the present application. It should be appreciated that the described embodiments are only some of the embodiments of the present application, but not 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 the present application.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising," "including," "having," "with," "containing," "involving," and the like as used herein are used inclusively, i.e., in a non- limiting sense. Therefore, use of these terms in the description herein is not intended to exclude other steps, elements, or components not specifically recited. The terms "first," "second," and the like, as used herein do not connote any order, quantity, or importance, but rather are used to distinguish one element from another. Further, the terms "first" and "second" are used herein for descriptive purposes only and are not to be construed as indicating or implying relative importance or an ordered limit to the indicated features. Thus, a feature limited to "first" and "second" can include one or more such features. In the description herein, "a plurality" means two or more, unless otherwise specified.

[0044] In the description of the application, it should be understood that the orientation or positional relationship indicated by the terms "center", "transverse", "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the purpose of facilitating the description of the application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application.

[0045] In the description of the application, it should be noted that unless otherwise specified and limited, the terms "mounting", "connecting", "connecting", "attaching" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication between the two elements inside. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0046] Figure 3 A schematic diagram of a photovoltaic roofing system according to some embodiments of the application.

[0047] One or more embodiments of the application disclose a photovoltaic roofing system. Referring to Figures 1 to 17The photovoltaic roof system comprises a substrate 10 and a mounting member 20. The substrate 10 comprises a main body portion 11 adapted to be mounted on a building surface and a mounting portion 12 located on a side of the main body portion 11 facing the photovoltaic module 90 along a first direction. The mounting member 20 supports the photovoltaic module 90 so that the photovoltaic module 90 and the substrate 10 are spaced apart along the first direction. The mounting member 20 is provided with a fixing portion 21 adapted to be coupled with the mounting portion 12 and a clamping portion 22 located on a side of the fixing portion 21 facing the photovoltaic module 90 along the first direction, and the clamping portion 22 clamps the photovoltaic module 90.

[0048] It should be understood that the above description is only a reference Figure 4 , Figure 5 and Figure 14 The photovoltaic module 90 is clamped to the clamping portion 22 of the mounting member 20, and further, the fixing portion 21 of the mounting member 20 is coupled with the substrate 10, so that the installation of the photovoltaic roof system is more convenient, which is conducive to improving the installation efficiency. In addition, the mounting member 20 can space the photovoltaic module 90 and the substrate 10 apart along the first direction, so as to improve the heat dissipation efficiency of the photovoltaic module 90, which is conducive to avoiding the occurrence of hot spot phenomenon, and further, so as to keep the photovoltaic module 90 at a higher power generation capacity.

[0049] It is worth mentioning that the mounting member 20 can replace the frame of the photovoltaic module 90 in the related art, that is, the mounting member 20 can not only play the role of the frame, but also play the role of connecting the photovoltaic module 90 and the substrate 10, which is conducive to avoiding the separate manufacturing and installation of the frame of the photovoltaic module 90, thereby reducing the material cost and manufacturing cost, and further, simplifying the installation steps of the photovoltaic roof system.

[0050] In some embodiments, referring to Figure 2 , Figure 5 , Figure 10 and Figure 14 The substrate 10 is provided with a mounting portion 12 at each end along the second direction to support the photovoltaic module 90, and each mounting portion 12 comprises a coupling segment 121 bent and extended from the main body portion 11 towards the photovoltaic module 90 to be fixedly connected with the fixing portion 21 of the mounting member 20. Further, the fixing portion 21 of the mounting member 20 is provided with a hook groove 211 adapted to be coupled with the coupling segment 121 to fixedly connect the mounting member 20 and the substrate 10.

[0051] In at least one embodiment, the mounting portion 12 comprises two limiting segments 122 extended from the main body portion 11 towards the photovoltaic module 90 and spaced apart along the second direction to define a limiting groove 1221 between the two limiting segments 122, and the limiting groove 1221 is adapted to accommodate the fixing portion 21 of the mounting member 20. Further, the coupling segment 121 is located between the two limiting segments 122.

[0052] It should be understood that the limiting groove 1221 is used to facilitate the positioning of the mounting piece 20 during installation, thereby reducing the installation difficulty of the photovoltaic roof system and improving the construction efficiency. Further, the cooperation of the hook groove 211 and the hooking section 121 facilitates the connection of the mounting piece 20 to the substrate 10, which is beneficial to increase the stress area between the mounting piece 20 and the substrate 10 and improve the load bearing capacity of the mounting piece 20 and the substrate 10 in the wind uplift direction, thereby improving the wind uplift resistance of the photovoltaic roof system.

[0053] In at least one embodiment, referring to Figure 10 , each mounting portion 12 has two symmetrically arranged hooking sections 121, and the two hooking sections 121 are located between the two limiting sections 122. It should be understood that the two symmetrically arranged hooking sections 121 facilitate the more dispersed stress between the mounting piece 20 and the substrate 10, which is beneficial to further improve the connection strength and load bearing capacity of the mounting piece 20 and the substrate 10, and to make the stress of the mounting portion 12 of the mounting piece 20 and the substrate 10 more balanced.

[0054] In some embodiments, referring to Figure 10 , the mounting portion 12 further comprises a supporting platform 123, which is located on the side of the main body portion 11 facing the photovoltaic module 90 along the first direction, and the top surface of the supporting platform 123 is spaced apart from the main body portion 11 along the first direction to define a cavity 124 between the top surface of the supporting platform 123 and the main body portion 11; under the condition that the mounting piece 20, the photovoltaic module 90 and the supporting platform 123 are sequentially penetrated by the fastener to be connected and fixed, the cavity 124 can accommodate the end of the fastener.

[0055] That is, the supporting platform 123 is approximately inverted "U" shaped, connected to the side of the main body portion 11 facing the photovoltaic module 90, and the limiting section 122 and the hooking section 121 extend from the top surface of the supporting platform 123 toward the photovoltaic module 90. Under the condition that the mounting piece 20 is connected to the substrate 10, the top surface of the supporting platform 123 can bear the mounting piece 20.

[0056] Further, referring to Figure 5 , Figure 7 and Figure 14 , the photovoltaic roof system further comprises a first fastener 81, which is adapted to sequentially penetrate the clamping portion 22 of the mounting piece 20, the photovoltaic module 90, the fixing portion 21 of the mounting piece 20, and the top surface of the supporting platform 123 to connect and fix the mounting piece 20, the photovoltaic module 90 and the substrate 10, improve the connection strength and connection reliability between the three, and further improve the wind uplift resistance of the photovoltaic roof system.

[0057] Still further, referring to Figure 5 and Figure 12The cavity 124 between the top surface of the support platform 123 and the main body 11 can accommodate the end of the first fastener 81, which can prevent the first fastener 81 from abutting against or even damaging the main body 11, thereby ensuring the integrity of the main body 11 of the base plate 10 and improving the waterproof performance of the photovoltaic roofing system.

[0058] In at least one embodiment, referring to Figures 1 to 5 The photovoltaic panel 91 of the photovoltaic module 90, the mounting member 20, and the top surface of the support platform 123 are each provided with a preformed hole to facilitate the passage of the first fastener 81, thereby improving the installation efficiency of the photovoltaic roofing system.

[0059] It is worth mentioning that by disassembling the first fastener 81, the monolithic photovoltaic module 90 can be conveniently extracted from the clamping portion 22 of the mounting member 20, so that the monolithic photovoltaic module 90 can be separated from the photovoltaic roofing system, which can reduce the difficulty of disassembling, maintaining, and replacing the monolithic photovoltaic module 90 in the later stage, and improve the maintainability of the photovoltaic roofing system.

[0060] In some embodiments, referring to Figure 5 The photovoltaic roofing system further comprises a waterproof cap 62, which is adapted to cover the head of the first fastener 81 to shield the first fastener 81 under the condition that the mounting member 20, the photovoltaic module 90, and the base plate 10 are sequentially penetrated by the first fastener 81 for connection and fixation, which can prevent rainwater from eroding the first fastener 81, thereby improving the reliability of the first fastener 81 in connecting and fixing the mounting member 20, the photovoltaic module 90, and the base plate 10, and prolonging the service life of the first fastener 81 and the photovoltaic roofing system.

[0061] In some embodiments, referring to Figure 5 And Figure 14 The clamping portion 22 of the mounting member 20 has a clamping cavity 221 with an opening facing the photovoltaic module 90, which can accommodate the edge of the photovoltaic module 90; the photovoltaic roofing system further comprises a spacer 70, which is adapted to be accommodated in the clamping cavity 221 to space between the clamping portion 22 and the photovoltaic module 90, which can prevent the photovoltaic panel 91 of the photovoltaic module 90 from being in hard contact with the clamping portion 22 of the mounting member 20, thereby reducing the risk of damage or even fragmentation of the photovoltaic panel 91, and improving the reliability and safety of the photovoltaic roofing system.

[0062] In some embodiments, referring to Figure 6 And Figure 11The substrate 10 further comprises a receiving portion 13 located on the side of the main body portion 11 facing the photovoltaic module 90, the receiving portion 13 is provided with a receiving groove 131 for receiving the connector 93 of the photovoltaic module 90, so as to limit the connector 93, which is conducive to making the wiring of the photovoltaic roofing system more uniform, and improving the aesthetic and electrical safety of the photovoltaic roofing system. Specifically, the junction box 92 is located on the back of the photovoltaic module 90, that is, on the side of the photovoltaic panel 91 of the photovoltaic module 90 facing the substrate 10, and the connector 93 is drawn out from the junction box 92, so as to connect and conduct between each photovoltaic module 90.

[0063] Further, referring to Figure 6 and Figure 11 , the receiving portion 13 further has a baffle 132 extending from the groove wall of the receiving groove 131 into the receiving groove 131, so as to shield the opening of the receiving groove 131 and keep the cable of the connector 93 in the receiving groove 131. That is, the cable of the connector 93 can bypass the baffle 132 to put the connector 93 into the receiving groove 131. Further, the baffle 132 can stop the connector 93 and the cable in the receiving groove 131, which is conducive to avoiding the connector 93 and the cable being pulled out of the receiving groove 131 due to external force during construction. That is, the connector 93 and the cable can be kept in the receiving groove 131 or move along the extension direction of the receiving groove 131, thereby making the wiring of the photovoltaic roofing system more uniform, and further avoiding the unconnected connector 93 from contacting metal and causing safety hazards.

[0064] In at least one embodiment, referring to Figure 11 , the receiving portion 13 comprises two baffles 132. Specifically, the two baffles 132 respectively extend from the oppositely arranged groove walls into the receiving groove 131, which can reliably keep the connector 93 and the cable in the receiving groove 131, and also make the cable more conveniently bypass the two baffles 132, thereby improving the installation efficiency of the photovoltaic roofing system.

[0065] In some embodiments, referring to Figure 7 and Figure 12 , the substrate 10 is provided with a connecting rib 14 at each end along the second direction, the connecting rib 14 is located on the side of the main body portion 11 facing the photovoltaic module 90, and the connecting rib 14 is adapted to connect adjacent two substrates 10. It should be understood that the adjacent two connecting ribs 14 of the adjacent two substrates 10 can be directly connected and fixed to each other, or can be fixed by other parts, such as clamps, fasteners, etc.

[0066] In at least one embodiment, the photovoltaic roofing system further comprises a connecting piece 30, the connecting piece 30 is capable of covering two connecting ribs 14 on two adjacent substrates 10, thereby playing a role of connecting the substrates 10. In at least one embodiment, the connecting piece 30 adopts a full-length design, thereby covering the gap between the two adjacent substrates 10, improving the waterproof performance of the photovoltaic roofing system.

[0067] In some embodiments, referring to Figure 7 and Figure 12 , the connecting rib 14 is bent and extended from the main body part 11 to define an auxiliary cavity 141 between the connecting rib 14 and the main body part 11. The photovoltaic roofing system further comprises a cushion block 40, referring to Figure 7 . At least part of the cushion block 40 is accommodated in the auxiliary cavity 141, so that the connecting rib 14 is clamped between the connecting piece 30 and the cushion block 40, and the cushion block 40 is arranged opposite to the connecting piece 30 along the first direction, so that the cushion block 40 and the connecting piece 30 are suitable for being fixedly connected by the fastener. It should be understood that the cushion block 40 is filled in the auxiliary cavity 141, thereby playing a supporting role on the connecting rib 14, thereby improving the structural strength of the connecting rib 14, facilitating the construction personnel to step on, and leaving a maintenance channel for later maintenance operation.

[0068] Further, referring to Figure 7 , the connecting rib 14 is clamped between the connecting piece 30 and the cushion block 40, thereby facilitating to improve the connection strength and connection reliability between the connecting rib 14, the cushion block 40 and the connecting piece 30. In addition, the photovoltaic roofing system further has a second fastener 82, the second fastener 82 is suitable for sequentially penetrating the connecting piece 30 and the cushion block 40, so as to fixedly connect the connecting piece 30, the connecting rib 14 and the cushion block 40, thereby improving the connection strength and connection reliability therebetween.

[0069] It is worth mentioning that the second fastener 82 only penetrates the connecting piece 30 and the cushion block 40, thereby facilitating to avoid damaging the connecting rib 14, on the basis of ensuring that the connecting piece 30, the connecting rib 14 and the cushion block 40 are reliably connected and fixed, the structural strength of the connecting rib 14 is also improved, thereby facilitating to avoid hidden troubles such as cracks of the connecting rib 14 with relatively narrow size due to punching. It should be understood that the second fastener 82 can also sequentially penetrate the connecting piece 30, the connecting rib 14 and the cushion block 40 according to actual conditions, which is not specifically limited in the present application.

[0070] In at least one embodiment, referring to Figure 13 , the connecting rib 14 comprises a first folded section 142 and a second folded section 143, the first folded section 142 is bent and extended from the main body part 11 to form the auxiliary cavity 141, and the second folded section 143 is connected to the first folded section 142 and bent and extended towards the first folded section 142, thereby facilitating to make the structure of the connecting rib 14 more compact.

[0071] Further, referring to Figure 15 The cushion block 40 comprises a filling portion 41 and an extending portion 42. The filling portion 41 is adapted to be accommodated in the auxiliary cavity 141, so as to support the first folded section 142 of the connecting rib 14. The filling portion 41 is provided with a connecting groove 411, which is adapted to be hooked with the second folded section 143 of the connecting rib 14, so as to fix the cushion block 40 and the connecting rib 14, and to improve the connecting strength and reliability of the cushion block 40 and the connecting rib 14. The extending portion 42 is connected to the filling portion 41, so as to extend out of the auxiliary cavity 141, and to be oppositely arranged with at least part of the connecting member 30 along the first direction.

[0072] Further, referring to Figure 16 The connecting member 30 comprises a middle section 31, a top section 32 and an extending section 33. Under the condition that the connecting member 30 is installed on the substrate 10, the middle section 31 is filled between two adjacent connecting ribs 14, so as to support the whole connecting member 30, and to avoid the stress of the connecting member 30 being completely applied to the connecting rib 14 and the cushion block 40, that is, to make the stress more dispersed, and to improve the anti-treading performance of the photovoltaic roofing system. The top section 32 is revolved and extended from the end of the middle section 31 away from the substrate 10, so as to cover the first folded section 142 of the two adjacent connecting ribs 14, so that the first folded section 142 is clamped between the top section 32 of the connecting member 30 and the filling portion 41 of the cushion block 40, and the two adjacent substrates 10 are reliably connected through the connecting member 30 and the cushion block 40. The extending section 33 is connected to the top section 32, and oppositely arranged with the extending portion 42 of the cushion block 40 along the first direction, so that the extending section 33 and the extending portion 42 are adapted to be connected and fixed through the second fastener 82.

[0073] In some embodiments, referring to Figure 5 and Figure 17 The photovoltaic roofing system further comprises a covering member 50, which covers the connecting rib 14 on the substrate 10, so that the connecting rib 14 is clamped between the covering member 50 and the cushion block 40, and the covering member 50 and the cushion block 40 are adapted to be connected and fixed through the second fastener 82. Specifically, the structure of the covering member 50 is similar to half of the connecting member 30, so as to cover the single connecting rib 14 located at the edge, to protect the connecting rib 14, and to improve the aesthetic appearance of the photovoltaic roofing system.

[0074] In some embodiments, referring to Figure 5 and Figure 8, the photovoltaic roof system further comprises a waterproof plate 61, the waterproof plate 61 is overlapped between the connecting rib 14 and the mounting part 12, under the condition that the cushion block 40 and the connecting piece 30 are connected and fixed by the second fastener 82, the waterproof plate 61 can shield the second fastener 82, which is conducive to avoiding the erosion of rainwater to the second fastener 82, and can improve the reliability of the second fastener 82 in connecting and fixing the connecting piece 30 and the cushion block 40, and the reliability of the second fastener 82 in connecting and fixing the covering piece 50 and the cushion block 40, and is also conducive to prolonging the service life of the second fastener 82 and the photovoltaic roof system.

[0075] In at least one embodiment, with reference to Figure 8 , the mounting part 12 further comprises a boss 125, the boss 125 extends from the side of the supporting table 123 to the direction where the connecting rib 14 is located, the side of the connecting piece 30 facing the supporting table 123 is provided with a notch 321, one end of the waterproof plate 61 can be supported on the boss 125, and the other end of the waterproof plate 61 can be placed at the notch 321 of the connecting piece 30, so that the waterproof plate 61 is erected above the second fastener 82, and the second fastener 82 is shielded. It is worth mentioning that, with reference to Figure 16 , by providing the notch 321 on the connecting piece 30, the upper surface of the waterproof plate 61 and the upper surface of the top section 32 of the connecting piece 30 are flush, so as to form a flat channel, which is convenient for the construction personnel to step on, and is also conducive to improving the aesthetic appearance of the photovoltaic roof system.

[0076] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.

Claims

1. A photovoltaic roofing system, characterized by, The photovoltaic roof system comprises a substrate and a mounting member. The substrate comprises a main body and a mounting portion, the main body is adapted to be mounted on a building surface, and the mounting portion is located on a side of the main body facing the photovoltaic module along a first direction. The mounting member is adapted to support the photovoltaic module, so that the photovoltaic module and the substrate are spaced apart along the first direction.

2. The photovoltaic roofing system of claim 1, wherein, The mounting portion of the substrate is provided with a hooking section, which is bent and extends from the main body towards the photovoltaic module, so as to be fixed to the fixing portion of the mounting member.

3. The photovoltaic roofing system of claim 2, wherein, The fixing portion of the mounting member is provided with a hook groove, which is adapted to be hooked with the hooking section, so that the mounting member and the substrate are fixed.

4. The photovoltaic roofing system of claim 2, wherein, The mounting portion further comprises two limiting sections, which extend from the main body towards the photovoltaic module and are spaced apart along the second direction, so as to define a limiting groove between the two limiting sections, which is adapted to accommodate the fixing portion of the mounting member.

5. The photovoltaic roofing system of claim 2, wherein, The mounting portion further comprises a supporting platform, which is located on a side of the main body facing the photovoltaic module along the first direction.

6. The photovoltaic roofing system of claim 1, wherein, The substrate further comprises a receiving portion, which is located on a side of the main body facing the photovoltaic module.

7. The photovoltaic roofing system of claim 1, wherein, The substrate is provided with a connecting rib at each end along the second direction.

8. The photovoltaic roofing system of claim 7, wherein, The photovoltaic roof system further comprises a connecting member, which is adapted to cover two connecting ribs on adjacent two substrates, so as to connect the adjacent two substrates.

9. The photovoltaic roofing system of claim 8, wherein, The connecting rib is bent and extends from the main body, so as to define an auxiliary cavity between the connecting rib and the main body. The photovoltaic roof system further comprises a pad, at least a part of which is accommodated in the auxiliary cavity, so that the connecting rib is clamped between the connecting member and the pad.

10. The photovoltaic roofing system of claim 9, wherein, The connecting rib comprises a first bent section and a second bent section, the first bent section is bent from the main body to form the auxiliary cavity, and the second bent section is connected to the first bent section and extends towards the first bent section; The cushion block comprises a filling part and an extending part, the filling part is adapted to be accommodated in the auxiliary cavity, the filling part is provided with a connecting groove, the connecting groove is adapted to be connected with the second bent section of the connecting rib, so that the cushion block and the connecting rib are fixedly connected, and the extending part is connected to the filling part and extends out of the auxiliary cavity; The connecting piece comprises a middle section, a top section and an extending section, under the condition that the connecting piece is installed on the base plate, the middle section is filled between two adjacent connecting ribs, the top section extends from one end of the middle section away from the base plate and covers the first bent sections of the two adjacent connecting ribs, and the extending section is connected to the top section and is arranged opposite to the extending part of the cushion block in a first direction, so that the extending section and the extending part are adapted to be connected and fixed by a fastener.

11. The photovoltaic roofing system of claim 7, wherein, The photovoltaic roof system further comprises a covering piece, the covering piece covers the connecting rib on the base plate.

12. The photovoltaic roofing system of claim 7, wherein, The photovoltaic roof system further comprises a waterproof plate, the waterproof plate is lapped between the connecting rib and the mounting part.

13. The photovoltaic roofing system of any of claims 1-12, wherein, The clamping part of the mounting piece has a clamping cavity with an opening facing the photovoltaic module, the clamping cavity is adapted to accommodate the edge of the photovoltaic module; the photovoltaic roof system further comprises a cushion strip, the cushion strip is adapted to be accommodated in the clamping cavity to be spaced between the clamping part and the photovoltaic module.

14. The photovoltaic roofing system of any of claims 1-12, wherein, The photovoltaic roof system further comprises a waterproof cap, under the condition that the mounting piece, the photovoltaic module and the base plate are sequentially penetrated by the fastener to be connected and fixed, the waterproof cap is adapted to cover the head of the fastener to shield the fastener.

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