Photovoltaic module fixing device and photovoltaic roof system thereof

Abstract

The utility model discloses a photovoltaic module fixing device and a photovoltaic roof system thereof, and the device comprises a fixing assembly which comprises a fixing main body which is provided with an accommodation space which enables the fixing assembly to accommodate a metal rib; the supporting assembly comprises a supporting seat, the supporting seat is provided with a first supporting surface, one side of the supporting seat is detachably connected to the fixing main body, so that the fixing main body and the first supporting surface are attached to each other to support the supporting seat, and the other side of the supporting seat is detachably connected with a photovoltaic assembly; the supporting seat supports the photovoltaic module along a first direction. By increasing the contact area between the fixing device and the photovoltaic module, stress concentration is effectively avoided when the photovoltaic module is treaded, and the metal roof is fully paved with the photovoltaic module.

Description

Technical Field

[0001] This application relates to the field of photovoltaic technology, and in particular to a mounting device for a photovoltaic module and a photovoltaic roofing system thereof. Background Technology

[0002] Building Integrated Photovoltaics (BIPV) integrates photovoltaic modules as building components or materials, making them part of the building while also generating electricity. BIPV avoids occupying excessive land resources, which is especially important for urban buildings where land is expensive. BIPV converts solar energy into electricity, which can reduce overall outdoor temperature and also play a role in peak shaving for the power grid, thus contributing to building energy conservation.

[0003] In related technologies, the traditional installation method uses a guide rail bracket support system. By laying guide rail brackets parallel to each other at predetermined intervals under the photovoltaic modules, the photovoltaic modules are erected and fixed.

[0004] However, the inventors realized that in actual use, fixing photovoltaic modules with guide rail brackets results in a small contact area between the photovoltaic modules and the guide rail brackets, which limits the weight that the photovoltaic modules can bear. This makes it impossible for the photovoltaic modules to be stepped on. Once stepped on, the photovoltaic modules will break due to stress concentration. This necessitates leaving a maintenance passage for maintenance personnel to walk on, which means that the roof cannot be fully covered with photovoltaic modules, thus affecting the final power generation of the photovoltaic modules. Summary of the Invention

[0005] This application provides one or more embodiments of a photovoltaic module fixing device and a photovoltaic roofing system thereof. A plurality of fixing devices are provided to fix the photovoltaic module to the metal roof. By increasing the contact area between the fixing devices and the photovoltaic module, stress concentration-induced breakage of the photovoltaic module is effectively avoided when it is stepped on, so that the photovoltaic module can be covered with the metal roof and the power generation of the photovoltaic module is increased.

[0006] In a first aspect, a fixing device for a photovoltaic module includes: a fixing component including a fixing body, the fixing body having a receiving space, the receiving space allowing the fixing component to receive metal ribs; and a supporting component including a supporting base, the supporting base having a first supporting surface, one side of the supporting base being detachably connected to the fixing body such that the fixing body and the first supporting surface are in contact to support the supporting base, and the other side of the supporting base being detachably connected to a photovoltaic module, the supporting base supporting the photovoltaic module along a first direction.

[0007] In one embodiment, the fixing body includes a fixing segment, a pair of positioning segments and a pair of connecting segments, the fixing segment being integrally connected to the upper end of each of the connecting segments, and each of the positioning segments extending backward along a second direction from the lower end of each of the connecting segments.

[0008] In one embodiment, the support component further includes a pressure block disposed on the upper surface of the photovoltaic module along a first direction, and a clamping space is formed between the pressure block and the support base to clamp the photovoltaic module.

[0009] In one embodiment, the support base includes a pair of support arms and a bent section. Each support arm extends from both sides of the first support surface toward the photovoltaic module, and each bent section bends downward in a rotary manner from the upper end of the support arm, such that the top of the bent section forms a positioning surface, which supports the photovoltaic module along a first direction.

[0010] In one embodiment, the support assembly further includes a locking member, wherein each of the bent segments forms a receiving groove with each of the support arms, the locking member including an extension segment and a pair of insert segments, the pair of insert segments being fixedly connected to both ends of the extension segment, and each of the insert segments being rotatably bent upward relative to the extension segment to be inserted into the receiving groove and support the positioning surface.

[0011] In one embodiment, the support assembly further includes a buffer disposed between the positioning surface of the support base and the lower surface of the photovoltaic module.

[0012] In one embodiment, the pressure block is provided with a mounting groove adapted to install a flexible member, the flexible member being disposed between the pressure block and the upper surface of the photovoltaic module, the flexible member being provided with a serrated surface, the serrated surface being disposed on the side of the flexible member closer to the photovoltaic module.

[0013] In one embodiment, the fixing body has a U-shaped structure, and the opening of the fixing body faces the metal rib.

[0014] In one embodiment, the fixing assembly further includes: a first fastener and a second fastener. The positioning segment has a first through hole, and the two sides of the metal rib have first threaded holes. The first fastener passes through the first through hole and engages with the first threaded holes to install the positioning segment on both sides of the metal rib. The first support surface of the support base has a second through hole, and the first fixing surface of the fixing body has a second threaded hole. The second fastener passes through the second through hole and engages with the thread in the second threaded hole to install the support base on the fixing body. The support assembly also includes a third fastener. The pressure block has a third through hole, and the locking member has a third threaded hole. The third fastener passes through the third through hole, so that the third fastener engages with the thread in the third threaded hole to connect the pressure block and the locking member to clamp the photovoltaic module.

[0015] On the other hand, a photovoltaic roofing system includes a fixing device, a metal roof, metal ribs formed by the cooperation of adjacent metal roofs, and photovoltaic modules. The fixing device cooperates with the metal ribs and is installed on the metal roof. The photovoltaic modules are installed on the metal roof through the fixing device.

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

[0017] (1) The first fixing surface of the fixed body and the first supporting surface of the support base are in close contact with each other, which increases the contact area between the two, reduces local stress concentration, improves the overall structure's support stiffness for the photovoltaic module, and prevents the photovoltaic module from breaking due to being stepped on.

[0018] (2) Multiple fixing devices are set up to support multiple positions of the photovoltaic module, improve the load-bearing capacity of the photovoltaic module, facilitate the staff to walk on the photovoltaic module, thereby carrying out installation and maintenance, reduce the space left for operation and maintenance channels, increase the installation area of ​​the photovoltaic module, and increase the power generation. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings of the embodiments will be briefly introduced below. Obviously, the drawings described below only involve some embodiments of this application and are not intended to limit this application.

[0020] Figure 1 An exploded view of a photovoltaic roofing system according to some embodiments of this application.

[0021] Figure 2 This is a first-view structural schematic diagram of a photovoltaic roofing system according to some embodiments of this application.

[0022] Figure 3 This is a structural schematic diagram from another perspective of a photovoltaic roofing system according to some embodiments of this application.

[0023] Figure 4 This is a schematic diagram of the structure of a pressure block according to some embodiments of this application.

[0024] Figure 5 This is a structural schematic diagram of a photovoltaic roof system according to some embodiments of this application.

[0025] Figure 6 This is a structural schematic diagram of a support base according to some embodiments of this application.

[0026] Figure 7 This is a schematic diagram of the structure of a fixing component according to some embodiments of this application.

[0027] Figure 8 This is a schematic diagram of the structure of a locking member according to some embodiments of this application.

[0028] Figure 9 This is a first-view structural schematic diagram of a photovoltaic roofing system according to some other embodiments of this application.

[0029] Figure 10 This is a structural schematic diagram from another perspective of a photovoltaic roofing system according to some other embodiments of this application.

[0030] In the diagram: 1. Fixing device; 10. Fixing component; 11. Fixing body; 111. Accommodating space; 112. First fixing surface; 113. Positioning section; 114. Connecting section; 115. Fixing section; 12. First fastener; 13. Second fastener; 14. Second fixing base; 141. Extension; 15. Second buffer; 20. Support component; 21. Support seat; 211. First support surface; 212. Support arm; 213. Bending section; 2131. Positioning surface; 2132. Accommodating groove; 22. Pressure block; 221. Clamping space; 222. Mounting groove; 23. Locking component; 231. Extension section; 232. Embedding section; 24. Buffer; 25. Flexible component; 251. Serrated surface; 26. Third fastener; 3. Metal roof; 31. Metal rib; 4. Photovoltaic module; 5. Photovoltaic roofing system. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings showing multiple embodiments according to this application. It should be understood that the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments described in this application without creative effort will fall within the scope of protection of this application.

[0032] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit this application; the terms "comprising," "including," "having," "containing," etc., in the description, claims, and accompanying drawings of this application are open-ended terms. Therefore, "comprising," "including," or "having" refers to, for example, a method or apparatus having one or more steps or elements, but is not limited to having only these one or more elements. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, rather than to describe a specific order or hierarchy.

[0033] One or more embodiments of this application disclose a mounting device for photovoltaic modules. (Refer to...) Figure 2 The fixing device 1 includes a fixing component 10 and a support component 20. The fixing component 10 includes a fixing body 11, which has a receiving space 111 and a first fixing surface 112. The receiving space 111 is formed between the first fixing surface 112 and the metal rib 31, so that the fixing component 10 can receive the metal rib 31. The first fixing surface 112 is arranged opposite to the photovoltaic module 4 along a first direction. The support component 20 includes a support base 21, which has a first support surface 211. One side of the support base 21 is detachably connected to the fixing body 11, so that the first support surface 211 and the first fixing surface 112 fit together, so that the fixing body 11 can support the support base 21 surface to surface. The photovoltaic module 4 is detachably connected to the other side of the support base 21, and the support base 21 supports the photovoltaic module 4 along the first direction. By setting up several fixing devices 1, the photovoltaic module 4 is fixed to the metal roof 3. By increasing the contact area between the fixing device 1 and the photovoltaic module 4, the photovoltaic module 4 can effectively avoid stress concentration and breakage when stepped on, so that the photovoltaic module 4 can be covered to the entire metal roof 3, thereby increasing the power generation of the photovoltaic module.

[0034] In some embodiments, such as Figure 7As shown, the fixing body 11 includes a pair of positioning sections 113, a pair of connecting sections 114, and a fixing section 115. The fixing section 115 is integrally connected to the upper end of each connecting section 114. Each positioning section 113 extends from the lower end of each connecting section 114 in the opposite direction. The positioning section 113 abuts against the metal roof 3, thereby installing the fixing body 11 on the metal roof. The two positioning sections 113 are set on both sides of the metal rib 31 to form a slot-type limiting structure, which prevents the fixing body 11 from shifting and makes it easier for construction personnel to determine the installation position of the fixing body 11. The positioning section 113 and the metal roof 3 are attached to each other surface to surface, which increases the contact area between the two and can enhance the overall wind resistance by utilizing the rigidity of the roof itself, which is especially suitable for installation environments where the metal roof 3 is relatively thin.

[0035] It is worth mentioning that the connecting section 114 and the fixing section 115 form a receiving space 111, in which the metal rib 31 is accommodated, thereby forming a rigid whole to prevent deformation. At the same time, the receiving space 111 can be adapted to metal ribs 31 of any shape, without the need to set up a separate fixing component 10 for different metal ribs 31, thus improving the versatility of the fixing device 1. Furthermore, there is a gap between the receiving space 111 and the metal rib 31. When the temperature difference is large, the metal rib 31 will undergo thermal expansion and contraction. Therefore, the gap between the receiving space 111 and the metal rib 31 can effectively prevent and restrict the thermal expansion and contraction of the metal rib 31. Moreover, the fixing component 10 can also be installed on the curved metal roof 3, making it more widely applicable.

[0036] In some embodiments, the first direction is the vertical direction, and the second opposite direction is the horizontal direction perpendicular to the first direction.

[0037] In some embodiments, such as Figure 2 As shown, the support component 20 further includes a pressure block 22, which is disposed on the upper surface of the photovoltaic module 4 along the first direction. A clamping space 221 is formed between the pressure block 22 and the support base 21. The pressure block 22 can move back and forth along the first direction to get closer to the support base 21, thereby clamping the photovoltaic module 4 and fixing the photovoltaic module 4.

[0038] In some embodiments, such as Figure 6As shown, the support base 21 includes a pair of support arms 212 and a bending section 213. Each support arm 212 extends from both sides of the first support surface 211 toward the photovoltaic module 4. Each bending section 213 bends downwards from the upper end of the support arm 212 in a rotary manner, so that the top of the bending section 213 forms a positioning surface 2131. The positioning surface 2131 can support the photovoltaic module 4 along the first direction. There are two positioning surfaces 2131, which can increase the contact area between the photovoltaic module 4 and the support base 21. This effectively avoids stress concentration that could cause the photovoltaic module 4 to break when maintenance personnel step on it. In other words, maintenance personnel can walk on the photovoltaic module 4 to perform maintenance, which can reduce the need for maintenance passages, increase the installation area of ​​the photovoltaic module 4, and thus increase the power generation of the photovoltaic module 4.

[0039] In some embodiments, the support component 20 further includes a locking element 23, such as Figure 6 As shown, receiving grooves 2132 are formed between each bent section 213 and each support arm 212, such as Figure 8 As shown, the locking member 23 includes an extension section 231 and a pair of insert sections 232. The pair of insert sections 232 are fixedly connected to both ends of the extension section 231. Each insert section 232 is bent upward in a rotary manner relative to the extension section 231 to be inserted into the receiving groove 2132. On the one hand, it restricts the installation position of the locking member 23, and on the other hand, it can support the support arm 212, effectively preventing the two support arms 212 from deforming and moving closer to each other due to the long-term force on the support base 21. Furthermore, the insert section 232 of the locking member 23 supports the positioning surface 2131 along the first direction to increase the strength of the support base 21.

[0040] In some embodiments, such as Figure 1 and Figure 2 As shown, the support assembly 20 also includes a buffer 24. The buffer 24 is located between the positioning surface 2131 of the support base 21 and the lower surface of the photovoltaic module 4. If the support base 21 and the photovoltaic module 4 are in direct contact, stress concentration will occur due to the rigidity of the materials. Therefore, the two are abutted against each other by the buffer 24. The buffer 24 can absorb stress through elastic deformation, thereby effectively reducing the possibility of the photovoltaic module 4 breaking when maintenance personnel step on it.

[0041] In some embodiments, such as Figure 4As shown, the pressure block 22 has a mounting groove 222, which is suitable for mounting a flexible component 25. The flexible component 25 is located between the pressure block 22 and the upper surface of the photovoltaic module 4. The flexible component 25 is made of elastic material, such as silicone or rubber, which can adapt to minor unevenness on the upper surface of the photovoltaic module 4. For example, air bubbles in the encapsulation film can cause unevenness on the surface of the photovoltaic module 4. The flexible component 25 fills the gap between the pressure block 22 and the photovoltaic module 4, ensuring a tight fit and improving installation accuracy. Moreover, the flexible component 25 can undergo elastic deformation, thereby absorbing vibration, reducing high-frequency collisions between the pressure block 22 and the photovoltaic module 4, reducing the risk of loosening due to fatigue wear, and extending the service life of the photovoltaic module 4. It is worth mentioning that the flexible component 25 has a serrated surface 251, which is located on the side of the flexible component 25 closest to the photovoltaic module 4. This increases the friction between the pressure block 22 and the photovoltaic module 4, preventing relative sliding between them and improving the stability of the fixing device 1.

[0042] In some embodiments, the flexible element 25 is mounted on the pressure block 22 via the mounting groove 222, which reduces the need for additional fasteners, reduces the overall weight of the pressure block 22, and facilitates the installation and replacement of the flexible element 25.

[0043] In some embodiments, such as Figure 1 As shown, the fixing body 11 has a U-shaped structure, and the opening of the fixing body 11 faces the metal rib 31, thereby forming a receiving space 111, so that the metal rib 31 can be surrounded by the receiving space 111, effectively preventing positional interference between the fixing body 11 and the metal rib 31, and the receiving space 111 does not restrict the cross-sectional shape of the metal rib 31, so that the fixing device 1 can be adapted to more metal roofs 3.

[0044] In some embodiments, the fixing assembly 10 further includes: a first fastener 12 and a second fastener 13, a positioning segment 113 having a first through hole, and the metal rib 31 having first threaded holes on both sides, the first fastener 12 passing through the first through hole and engaging with the first threaded holes to install the positioning segment 113 on both sides of the metal rib 31, the first support surface 211 of the support base 21 having a second through hole, and the first fixing surface 112 of the fixing body 11 having a second threaded hole, the second fastener 13 passing through the second through hole and engaging with the threads in the second threaded hole to install the support base 21 on the fixing body 11; the support assembly 20 further includes a third fastener 26, a pressure block 22 having a third through hole, and a locking member 23 having a third threaded hole, the third fastener 26 passing through the third through hole so that the third fastener 26 engages with the threads in the third threaded hole to connect the pressure block 22 and the locking member 23 to clamp the photovoltaic module 4.

[0045] In some embodiments, compared to permanent connections such as welding and riveting, fasteners allow for easy disassembly and adjustment, facilitating maintenance or reuse. Moreover, fasteners are inexpensive and readily available, reducing installation costs.

[0046] This application also provides another solution for fixing device 1, such as Figure 9 As shown, the fixing device 1 includes a second fixing base 14, which is fixed on the metal roof 3. The second fixing base 14 is provided with a pair of extensions 141, and the extensions 141 are provided with through holes for fixing. Fasteners pass through the through holes and cooperate with the threaded holes on the metal roof 3, thereby fixing the second fixing base 14 on the metal roof 3.

[0047] In some embodiments, the second fixed base 14 is further provided with a groove for installing the second buffer 15, so that the second buffer 15 is detachably installed between the second fixed base 14 and the photovoltaic module 4, and the second buffer 15 is provided with a second serrated surface, which can increase the friction between the photovoltaic module 4 and the second buffer 15 and prevent the photovoltaic module 4 from sliding.

[0048] In some embodiments, such as Figure 9 As shown, the other side of the photovoltaic module 4 is in contact with the pressure block 22 to fix the photovoltaic module 4 on the second fixing base 14. It is worth mentioning that the second fixing base 14 is provided with an installation space for installing fasteners. The fasteners are bolts, and the head of the bolt is inserted into the installation space and can abut against the installation space to prevent the bolt from coming out of the installation space. The screw extends out of the second fixing base 14 in the first direction and passes through the pressure block 22, so that one side of the pressure block 22 abuts against the upper surface of the photovoltaic module 4. The other side of the pressure block 22 is locked with a nut to complete the fixing.

[0049] In some embodiments, such as Figure 10 As shown, a flexible element 25 is provided on the side of the pressure block 22 near the photovoltaic module 4. The pressure block 22 has a mounting groove 222, and the flexible element 25 is mounted on the pressure block 22 through the mounting groove 222. The flexible element 25 has a serrated surface 251, which is located on the side of the flexible element 25 near the photovoltaic module 4. The serrated surface 251 can increase the friction between the pressure block 22 and the photovoltaic module 4, and prevent relative sliding between the pressure block 22 and the photovoltaic module 4, thereby improving the stability of the fixing device 1.

[0050] In some embodiments, the fixing device 1 is made of aluminum alloy or stainless steel, which not only ensures strength but also reduces the overall weight of the fixing device 1, preventing the metal roof 3 from deforming due to excessive load. In addition, aluminum alloy has good corrosion resistance, preventing the fixing device 1 from loosening and falling off after long-term use.

[0051] According to a second aspect of this application, a photovoltaic roofing system 5 is also disclosed. (Refer to...) Figure 1 and Figure 5 The photovoltaic roof system 5 includes a fixing device 1, a metal roof 3, a metal rib 31 formed by the cooperation of adjacent metal roofs 3, and a photovoltaic module 4. The fixing device 1 and the metal rib 31 cooperate with each other and are installed on the metal roof 3. The photovoltaic module 4 is installed on the metal roof 3 through the fixing device 1.

[0052] In other embodiments, the photovoltaic module 4, the fixing device 1, and the metal panel 3 are integrated under stress, which can effectively improve the structural stability of the photovoltaic roof system 5. It is worth mentioning that the photovoltaic module 4 is a double-glass module, and there are no frames around its perimeter, which can further reduce the installation cost of the photovoltaic roof system 5.

[0053] In other embodiments, multiple fixing devices 1 can be installed on a single photovoltaic module 4, such as 4, 6, or 8. The number of fixing devices 1 is not limited here. The installation direction of the fixing devices 1 can be along the long side of the photovoltaic module 4, or along the short side of the photovoltaic module 4. Alternatively, the fixing devices 1 can be arranged along the entire length, that is, the fixing devices 1 can be arranged in a continuous and uninterrupted manner to avoid connection nodes or weak points caused by segmented installation. The direction can be determined according to the actual installation environment and is not limited here.

[0054] 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 fixing device for photovoltaic modules, characterized in that, include: A fixing component includes a fixing body, the fixing body having a receiving space, the receiving space allowing the fixing component to receive a metal rib; A support assembly includes a support base with a first support surface. One side of the support base is detachably connected to the fixing body, such that the fixing body and the first support surface fit together to support the support base. The other side of the support base is detachably connected to a photovoltaic module, and the support base supports the photovoltaic module along a first direction.

2. The fixing device as described in claim 1, characterized in that, The fixing body includes a fixing segment, a pair of positioning segments, a pair of connecting segments, and a fixing segment. The fixing segment is integrally connected to the upper end of each of the connecting segments, and each of the positioning segments extends backward along the second direction from the lower end of each of the connecting segments.

3. The fixing device as described in claim 2, characterized in that, The support component further includes a pressure block, which is disposed on the upper surface of the photovoltaic module along a first direction, and a clamping space is formed between the pressure block and the support base to clamp the photovoltaic module.

4. The fixing device as described in claim 3, characterized in that, The support base includes a pair of support arms and a bent section. Each support arm extends from both sides of the first support surface toward the photovoltaic module. Each bent section bends downward in a rotary manner from the upper end of the support arm, so that the top of the bent section forms a positioning surface, which supports the photovoltaic module along the first direction.

5. The fixing device as described in claim 4, characterized in that, The support assembly further includes a locking member, wherein each of the bent sections forms a receiving groove with each of the support arms, the locking member includes an extension section and a pair of insert sections, the pair of insert sections being fixedly connected to both ends of the extension section respectively, and each of the insert sections is bent upward in a rotary manner relative to the extension section to be inserted into the receiving groove and support the positioning surface.

6. The fixing device as described in claim 5, characterized in that, The support assembly also includes a buffer element, which is disposed between the positioning surface of the support base and the lower surface of the photovoltaic module.

7. The fixing device as described in claim 6, characterized in that, The pressure block is provided with an installation groove, which is suitable for installing a flexible component. The flexible component is located between the pressure block and the upper surface of the photovoltaic module. The flexible component is provided with a serrated surface, which is located on the side of the flexible component closer to the photovoltaic module.

8. The fixing device as described in claim 2, characterized in that, The fixing body has a U-shaped structure, and the opening of the fixing body faces the metal rib.

9. The fixing device as described in claim 7, characterized in that, The fixing component further includes: a first fastener and a second fastener. The positioning segment is provided with a first through hole, and the two sides of the metal rib are provided with first threaded holes. The first fastener passes through the first through hole and engages with the first threaded holes to install the positioning segment on both sides of the metal rib. The first support surface of the support base is provided with a second through hole, and the first fixing surface of the fixing body is provided with a second threaded hole. The second fastener passes through the second through hole and engages with the threads in the second threaded hole to install the support base on the fixing body. The support assembly also includes a third fastener. The pressure block has a third through hole, and the locking member has a third threaded hole. The third fastener passes through the third through hole, so that the third fastener and the thread in the third threaded hole engage with each other, connecting the pressure block and the locking member to clamp the photovoltaic module.

10. A photovoltaic roofing system, characterized in that, It includes a fixing device as described in any one of claims 1 to 9, a metal roof, a metal rib formed by the cooperation of adjacent metal roofs, and a photovoltaic module, wherein the fixing device cooperates with the metal rib and is installed on the metal roof, and the photovoltaic module is installed on the metal roof through the fixing device.

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