Roof photovoltaic module waterproof structure and construction method thereof

Abstract

The invention discloses a roof photovoltaic module waterproof structure and a construction method thereof, and relates to the technical field of photovoltaic power generation, and the roof photovoltaic module waterproof structure comprises a plurality of longitudinal beams arranged on a roof surface, a plurality of purlines arranged on the longitudinal beams, and a plurality of photovoltaic panels arranged on the purlines. The at least two photovoltaic panels are sequentially arranged in the extending direction of the second edge, each photovoltaic panel is provided with a connecting part and an extending part in the extending direction of the second edge, the extending part of one of any two adjacent photovoltaic panels in the extending direction of the second edge is laminated on the connecting part of the other photovoltaic panel, and the extending part of the other photovoltaic panel is laminated on the connecting part of the other photovoltaic panel in the extending direction of the second edge. Therefore, the gap between any two adjacent photovoltaic panels in the extension direction of the second side is eliminated, the water seepage probability of the gap between any two adjacent photovoltaic panels in the extension direction of the second side is reduced, and the waterproof performance of the roof photovoltaic module is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic power generation, and particularly relates to a waterproof structure for roof photovoltaic modules and a construction method thereof. Background Art

[0002] Distributed photovoltaic power generation has become an important force in energy transformation. Usually, a distributed photovoltaic power station is built on the roof of an enterprise factory building, so that the originally underutilized roof of the enterprise can be effectively utilized, thereby enhancing the industrial value. However, when building a distributed photovoltaic power station on the roof, the roofs with existing photovoltaic power stations often have water seepage problems. Once leakage occurs, it will affect the normal production of the enterprise. Summary of the Invention

[0003] The main object of the present invention is to propose a waterproof structure for roof photovoltaic modules and a construction method thereof, aiming to solve the problem of easy water seepage on the roofs with existing photovoltaic power stations in the prior art.

[0004] To achieve the above object, a waterproof structure for roof photovoltaic modules proposed by the present invention is used for installation on a roof surface. The roof surface includes an adjacent first side and a second side, and includes:

[0005] Longitudinal beams, the number of the longitudinal beams is multiple, each longitudinal beam is arranged on the roof surface, and the extending direction of each longitudinal beam is parallel to the extending direction of the second side. The multiple longitudinal beams are arranged at intervals in sequence along the extending direction of the first side;

[0006] Purlins, the number of the purlins is multiple, each purlin is arranged on the longitudinal beam, and the extending direction of each purlin is parallel to the extending direction of the first side. The multiple purlins are arranged at intervals in sequence along the extending direction of the second side;

[0007] Photovoltaic panels, the number of the photovoltaic panels is multiple, each photovoltaic panel is arranged on the purlin. At least two photovoltaic panels are arranged in sequence along the extending direction of the second side. Each photovoltaic panel is respectively provided with a connecting portion and an extending portion along the extending direction of the second side. For any two adjacent photovoltaic panels along the extending direction of the second side, the extending portion of one photovoltaic panel overlaps and presses on the connecting portion of the other photovoltaic panel.

[0008] In an embodiment, the waterproof structure for roof photovoltaic modules further includes double-sided adhesive strips. The number of the double-sided adhesive strips is multiple. The double-sided adhesive strips are arranged between any two adjacent photovoltaic panels along the extending direction of the second side. One side of the double-sided adhesive strip is connected to the connecting portion of one photovoltaic panel, and the other side of the double-sided adhesive strip is connected to the extending portion of the other photovoltaic panel.

[0009] In one embodiment, the double-sided adhesive strip extends along the extension direction of the second side, and the double-sided adhesive strip is used to seal the gap between any two adjacent photovoltaic panels along the extension direction of the second side.

[0010] In one embodiment, the dimension of the connecting portion in the extension direction of the second side is d1, where 2 cm ≤ d1 ≤ 4 cm;

[0011] And / or, the dimension of the extending portion in the extension direction of the second side is d2, where 2 cm ≤ d2 ≤ 4 cm.

[0012] In one embodiment, at least two of the photovoltaic panels are arranged at intervals in sequence along the extension direction of the first side and form a safety gap, and the dimension of the safety gap in the extension direction of the first side is L, where 2 cm ≤ L ≤ 4 cm.

[0013] In one embodiment, the roof photovoltaic module waterproof structure further includes a U-shaped pressing strip. The U-shaped pressing strip is arranged in the safety gap, and the U-shaped pressing strip is connected to the photovoltaic panels surrounding the safety gap. The opening of the U-shaped pressing strip faces the roof surface, and the side of the U-shaped pressing strip facing away from the roof surface protrudes from the surface of the photovoltaic panel. The U-shaped pressing strip is provided in the same number as and corresponds to the safety gap one by one.

[0014] In one embodiment, the U-shaped pressing strip is connected to the purlin through a sealing compression bolt. The roof photovoltaic module waterproof structure further includes a rubber gasket. The stud of the sealing compression bolt passes through the rubber gasket, and both sides of the rubber gasket are hermetically connected to the head of the sealing compression bolt and the U-shaped pressing strip respectively.

[0015] In one embodiment, the roof photovoltaic module waterproof structure further includes a channel-shaped waterproof groove. The channel-shaped waterproof groove is arranged in the safety gap and is located between the roof surface and the U-shaped pressing strip. The U-shaped pressing strip is connected to the channel-shaped waterproof groove, and the channel-shaped waterproof groove is fixedly connected to the purlin. The channel-shaped waterproof groove is provided in the same number as and corresponds to the safety gap one by one.

[0016] In one embodiment, the roof photovoltaic module waterproof structure further includes a counterweight. The counterweight is provided with a receiving groove, and the groove wall of the receiving groove abuts against the longitudinal beam.

[0017] The present invention also provides a construction method for the roof photovoltaic module waterproof structure. The construction method for the roof photovoltaic module waterproof structure is applied to the above-mentioned roof photovoltaic module waterproof structure, and the construction method for the roof photovoltaic module waterproof structure includes the following steps:

[0018] A plurality of longitudinal beams are arranged at intervals along the extension direction of the first side, and each longitudinal beam is fixedly connected to the roof surface;

[0019] A plurality of purlins are arranged at intervals on the longitudinal beams along the extension direction of the second side, and each purlin is fixedly connected to the longitudinal beam;

[0020] Install the counterweight on the longitudinal beam;

[0021] Arrange a plurality of photovoltaic panels in an array on the purlins and connect them to the purlins. Bond the top surface of the connecting part of one of the two adjacent photovoltaic panels along the extension direction of the second side to the bottom surface of the extending part of the other photovoltaic panel through a double-sided adhesive tape;

[0022] Set a channel-shaped waterproof groove in the safety gap between any two adjacent photovoltaic panels along the extension direction of the first side;

[0023] Set a U-shaped pressing strip in the safety gap between any two adjacent photovoltaic panels along the extension direction of the first side, and connect the U-shaped pressing strip to the two adjacent photovoltaic panels;

[0024] Sheath the rubber gasket on the stud of the sealing and pressing bolt, and connect the U-shaped pressing strip to the purlin through the sealing and pressing bolt; so that both sides of the rubber gasket are hermetically connected to the head of the sealing and pressing bolt and the U-shaped pressing strip respectively.

[0025] The technical solution of the present invention is to respectively set a connecting part and an extending part on each photovoltaic panel along the extension direction of the second side, so that the extending part of one of any two adjacent photovoltaic panels along the extension direction of the second side overlaps the connecting part of the other photovoltaic panel, thereby eliminating the gap between any two adjacent photovoltaic panels along the extension direction of the second side, which is beneficial to reducing the probability of water seepage in the gap between any two adjacent photovoltaic panels along the extension direction of the second side and improving the waterproof performance of the roof photovoltaic module. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0027] Figure 1 It is a schematic diagram of the layout structure of the longitudinal beam and the purlin of the waterproof structure embodiment of the roof photovoltaic module provided by the present invention;

[0028] Figure 2 Schematic diagram of the photovoltaic panel layout structure of the waterproof structure of the roof photovoltaic module provided by the present invention;

[0029] Figure 3 For Figure 2 Partial enlarged view at location A in

[0030] Figure 4 Schematic diagram of the structure of the connection part and the extension part of the waterproof structure of the roof photovoltaic module provided by the present invention before lamination;

[0031] Figure 5 Schematic diagram of the structure of the connection part and the extension part of the waterproof structure of the roof photovoltaic module provided by the present invention after lamination;

[0032] Figure 6 For Figure 5 Partial enlarged view at location B in

[0033] Figure 7 First perspective structure diagram of the U-shaped pressing strip of the waterproof structure of the roof photovoltaic module provided by the present invention;

[0034] Figure 8 Second perspective structure diagram of the U-shaped pressing strip of the waterproof structure of the roof photovoltaic module provided by the present invention;

[0035] Figure 9 Front view of the counterweight of the waterproof structure of the roof photovoltaic module provided by the present invention;

[0036] Figure 10 Top view of the counterweight of the waterproof structure of the roof photovoltaic module provided by the present invention;

[0037] Figure 11 Flow schematic diagram of the first embodiment of the construction method of the waterproof structure of the roof photovoltaic module provided by the present invention.

[0038] Explanation of reference numerals:

[0039] 100, Waterproof structure of roof photovoltaic module; 1, Longitudinal beam; 2, Purlin; 3, Photovoltaic panel; 31, Connection part; 32, Extension part; 4, Double-sided adhesive tape; 5, Safety gap; 6, U-shaped pressing strip; 7, Rubber gasket; 8, Sealing and pressing bolt; 9, J-shaped waterproof groove; 10, Counterweight; 101, Accommodating groove; 11, Pressing block; 12, First bolt; 13, Second bolt; 200, Roof surface; 201, First side; 202, Second side.

[0040] The realization, functional characteristics and advantages of the object of the present invention will be further described with reference to the embodiments and the accompanying drawings. Detailed embodiments

[0041] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0042] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0043] In addition, if there are descriptions such as "first", "second", etc. involved in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where A and B are satisfied simultaneously. In addition, the technical solutions between the embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0044] Distributed photovoltaic power generation has become an important force in energy transformation. Usually, distributed photovoltaic power stations are built on the rooftops of enterprise factories, enabling the effective utilization of the rooftops of enterprises that were not fully utilized before, thereby enhancing the industrial value. However, when building a distributed photovoltaic power station on the roof, the rooftops with existing photovoltaic power stations often have the phenomenon of water seepage. Once leakage occurs, it will affect the normal production of the enterprise.

[0045] Through research by the inventor, it is found that the photovoltaic modules arranged on the roof include a plurality of photovoltaic panels. Each photovoltaic panel is arranged along the extension direction of the first side and the extension direction of the second side of the roof surface. The photovoltaic panels are arranged in sequence along the extension direction of the first side and will form longitudinal gaps, and the photovoltaic panels are arranged in sequence along the extension direction of the second side and form transverse gaps. These longitudinal and transverse gaps are extremely likely to cause water seepage in the photovoltaic modules. Therefore, these longitudinal and transverse gaps need to be properly treated. In the prior art, the waterproofing of the photovoltaic modules is achieved by installing channel purlins in the longitudinal gaps. However, no waterproof measures are taken for the transverse gaps, and there is a potential safety hazard of water seepage in the transverse gaps of the photovoltaic modules.

[0046] In view of the problems existing in the prior art, the present invention proposes a waterproof structure 100 for roof photovoltaic modules.

[0047] Please refer to Figure 1 and Figure 2 , in an embodiment of the present invention, the waterproof structure 100 for roof photovoltaic modules is used to be installed on the roof surface 200, and the roof surface 200 includes an adjacent first side 201 and a second side 202. The waterproof structure 100 for roof photovoltaic modules includes longitudinal beams 1, and the number of longitudinal beams 1 is multiple. Each longitudinal beam 1 is arranged on the roof surface 200, and the extending direction of each longitudinal beam 1 is parallel to the extending direction of the second side 202. The multiple longitudinal beams 1 are arranged at intervals in sequence along the extending direction of the first side 201. Specifically, each longitudinal beam 1 can be fixedly connected to the roof surface 200 through anchor bolts, or can be fixedly connected to the roof surface 200 by welding or other means. The waterproof structure 100 for roof photovoltaic modules further includes purlins 2, and the number of purlins 2 is multiple. Each purlin 2 is arranged on the longitudinal beam 1, and the extending direction of each purlin 2 is parallel to the extending direction of the first side 201. The multiple purlins 2 are arranged at intervals in sequence along the extending direction of the second side 202. Specifically, each purlin 2 can be directly welded on the longitudinal beam 1, or can be connected to the longitudinal beam 1 by bolts. Please refer to Figure 2 , Figure 4 and Figure 5 , the waterproof structure 100 for roof photovoltaic modules further includes photovoltaic panels 3, and the number of photovoltaic panels 3 is multiple. Each photovoltaic panel 3 is arranged on the purlin 2, and at least two photovoltaic panels 3 are arranged in sequence along the extending direction of the second side 202. Specifically, each photovoltaic panel 3 can be fixed on the purlin 2 by bolts, welding or other means. Each photovoltaic panel 3 is further provided with a connecting portion 31 and an extending portion 32 respectively along the extending direction of the second side 202. For any two adjacent photovoltaic panels 3 along the extending direction of the second side 202, the extending portion 32 of one photovoltaic panel 3 is laminated on the connecting portion 31 of the other photovoltaic panel 3.

[0048] In the above embodiment, each photovoltaic panel 3 is provided with a connecting portion 31 and an extending portion 32 respectively along the extending direction of the second side 202, so that for any two adjacent photovoltaic panels 3 along the extending direction of the second side 202, the extending portion 32 of one photovoltaic panel 3 is laminated on the connecting portion 31 of the other photovoltaic panel 3, thereby eliminating the gap between any two adjacent photovoltaic panels 3 along the extending direction of the second side 202, which is beneficial to reducing the water seepage probability of the gap between any two adjacent photovoltaic panels 3 along the extending direction of the second side 202 and improving the waterproof performance of the roof photovoltaic modules.

[0049] As a specific implementation manner of the above embodiment, please refer to Figure 1 , Figure 7 and Figure 8, the waterproof structure 100 of the roof photovoltaic module further includes a pressing block 11. One side of the pressing block 11 is fixed to the photovoltaic panel 3 by a first bolt 12, and the other side of the pressing block 11 is fixed to the purlin 2 by a second bolt 13. The photovoltaic panel 3 is connected to the purlin 2 through the pressing block 11. The pressing block 11, the first bolt 12, and the second bolt 13 are all the same in number as the photovoltaic panel 3 and are arranged in one-to-one correspondence. Please refer to Figure 1 , Figure 4 and Figure 5 , connection parts 31 and extension parts 32 are respectively arranged at both ends of each photovoltaic panel 3 along the extension direction of the second side 202. Among them, the extension part 32 at one end is a thin plate structure in the extension direction towards the roof surface 200. This thin plate structure is integrally formed with the photovoltaic panel 3, and the thickness of this thin plate structure is much smaller than the thickness of the photovoltaic panel 3 in this extension direction. The connection part 31 at the other end is a concave structure in the extension direction towards the roof surface 200, and the concave depth of this concave structure is the same as the thickness of the above-mentioned thin plate structure. Specifically, the thin plate structure of the extension part 32 of one of any two adjacent photovoltaic panels 3 along the extension direction of the second side 202 is laminated in the concave structure of the connection part 31 of the other photovoltaic panel 3, so that the above-mentioned thin plate structure and the concave structure are in interference fit, eliminating the gap between any two adjacent photovoltaic panels 3 along the extension direction of the second side 202, and further reducing the water seepage problem of the gap between any two adjacent photovoltaic panels 3 along the extension direction of the second side 202, thereby improving the waterproof performance of the photovoltaic module.

[0050] Furthermore, please refer to Figures 4 to 6 , the waterproof structure 100 of the roof photovoltaic module further includes a double-sided adhesive tape 4. The number of double-sided adhesive tapes 4 is multiple. A double-sided adhesive tape 4 is arranged between any two adjacent photovoltaic panels 3 along the extension direction of the second side 202. One side of the double-sided adhesive tape 4 is connected to the connection part 31 of one photovoltaic panel 3, and the other side of the double-sided adhesive tape 4 is connected to the extension part 32 of the other photovoltaic panel 3. By arranging a double-sided adhesive tape 4 between any two adjacent photovoltaic panels 3 along the extension direction of the second side 202, the rigid connection between the two adjacent photovoltaic panels 3 is changed into a flexible connection, which can increase the contact pressure and friction force between the connection part 31 and the extension part 32, and prevent relative displacement between the connection part 31 and the extension part 32; in addition, since both sides of the double-sided adhesive tape 4 have colloid, the connection part 31 and the extension part 32 of any two adjacent photovoltaic panels 3 along the extension direction of the second side 202 can be tightly bonded together through the double-sided adhesive tape 4, further preventing relative displacement between the connection part 31 and the extension part 32, which is beneficial to improving the stability between any two adjacent photovoltaic panels 3 along the extension direction of the second side 202.

[0051] Furthermore, please refer to Figure 6, the double-sided adhesive strip 4 extends along the extension direction of the second side 202. The double-sided adhesive strip 4 is used to seal the gap between any two adjacent photovoltaic panels 3 along the extension direction of the second side 202. Thus, while enhancing the stability between any two adjacent photovoltaic panels 3 along the extension direction of the second side 202, the double-sided adhesive strip 4 can also improve the waterproof performance of the gap between any two adjacent photovoltaic panels 3.

[0052] Further, please refer to Figure 4 , the dimension of the connecting portion 31 in the extension direction of the second side 202 is d1, where 2 cm ≤ d1 ≤ 4 cm, and d1 can be 2 cm. In addition, the dimension of the extending portion 32 in the extension direction of the second side 202 is d2, where 2 cm ≤ d2 ≤ 4 cm, and d2 can be 2 cm.

[0053] Further, please refer to Figure 2 and Figure 3 , at least two photovoltaic panels 3 are arranged at intervals in sequence along the extension direction of the first side 201 to form a safety gap 5. The safety gap 5 can provide a free expansion and contraction space for the thermal expansion deformation of any adjacent photovoltaic panels 3 along the extension direction of the first side 201, thereby preventing the photovoltaic panels 3 from being deformed due to the extrusion caused by the thermal expansion deformation of adjacent photovoltaic panels 3, and further being beneficial to improving the safety performance and service life of the photovoltaic panels 3. Specifically, the dimension of the safety gap 5 in the extension direction of the first side 201 is L, where 2 cm ≤ L ≤ 4 cm, and L can be 2 cm.

[0054] Further, please refer to Figure 7 and Figure 8 , the roof photovoltaic module waterproof structure 100 further includes a U-shaped pressing strip 6. The U-shaped pressing strip 6 is arranged in the safety gap 5, and the U-shaped pressing strip 6 is connected to the photovoltaic panels 3 surrounding the safety gap 5. The U-shaped pressing strip 6 and the safety gap 5 are provided in the same number and in one-to-one correspondence. By sealing the safety gap 5 with the U-shaped pressing strip 6, the water seepage problem between any two adjacent photovoltaic panels 3 along the extension direction of the first side 201 can be solved, thereby improving the waterproof performance of any two adjacent photovoltaic panels 3 along the extension direction of the first side 201. Specifically, the opening of the U-shaped pressing strip 6 faces the roof surface 200, and the side of the U-shaped pressing strip 6 facing away from the roof surface 200 protrudes from the surface of the photovoltaic panel 3, which can prompt the flowing water falling on the top surface of the U-shaped pressing strip 6 to disperse and flow away quickly, avoiding the long-term residue of the flowing water on the U-shaped pressing strip 6, preventing the U-shaped pressing strip 6 from sinking into the safety gap 5 due to the long-term large flowing water load and causing water seepage, and thus being beneficial to improving the service life of the U-shaped pressing strip 6 and the sealing effect between the U-shaped pressing strip 6 and the photovoltaic panels 3 surrounding the safety gap 5. The U-shaped pressing strip 6 can adopt a flexible structure, which can enable the photovoltaic panels 3 surrounding the safety gap 5 to expand and contract while meeting the waterproof requirement of the safety gap 5.

[0055] Specifically, the U-shaped pressing strip 6 is connected to the purlin 2 through the sealing and pressing bolt 8. The roof photovoltaic module waterproof structure 100 further includes a rubber gasket 7. The stud of the sealing and pressing bolt 8 passes through the rubber gasket 7, and both sides of the rubber gasket 7 are hermetically connected to the head of the sealing and pressing bolt 8 and the U-shaped pressing strip 6 respectively, which is beneficial to prevent water seepage from occurring in the bolt holes on the U-shaped pressing strip 6.

[0056] Further, please refer to Figure 2 , Figure 3 and Figure 8 , the roof photovoltaic module waterproof structure 100 further includes a channel-shaped waterproof groove 9. The channel-shaped waterproof groove 9 is arranged in the safety gap 5 and is located between the roof surface 200 and the U-shaped pressing strip 6. The U-shaped pressing strip 6 is connected to the channel-shaped waterproof groove 9, and the channel-shaped waterproof groove 9 is fixedly connected to the purlin 2. The number of the channel-shaped waterproof grooves 9 is the same as that of the safety gaps 5 and they are arranged in one-to-one correspondence. By using the U-shaped pressing strip 6 and the channel-shaped waterproof groove 9 in cooperation, it is beneficial to further improve the waterproof performance of the safety gap 5.

[0057] Further, please refer to Figure 9 and Figure 10 , the roof photovoltaic module waterproof structure 100 further includes a counterweight 10. The counterweight 10 is provided with a receiving groove 101, and the groove wall of the receiving groove 101 abuts against the longitudinal beam 1. By means of the counterweight 10, the overall weight of the roof photovoltaic module waterproof structure 100 can be increased, preventing the photovoltaic module from being lifted in strong wind weather, and thus meeting the technical requirements for preventing the photovoltaic module from being wind-lifted.

[0058] Please refer to Figure 11 , Figure 11 which is a schematic flow chart of the first embodiment of the construction method of the roof photovoltaic module waterproof structure provided by the present invention. The present invention also proposes a construction method of the roof photovoltaic module waterproof structure. This construction method of the roof photovoltaic module waterproof structure is applied to the above-mentioned roof photovoltaic module waterproof structure. The specific structure of this roof photovoltaic module waterproof structure refers to the above embodiment. Since this construction method of the roof photovoltaic module waterproof structure adopts all the technical solutions of the above-mentioned all embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated here one by one. The construction method of the roof photovoltaic module waterproof structure includes the following steps:

[0059] S100. Arrange a plurality of longitudinal beams at intervals in sequence along the extension direction of the first side, and each longitudinal beam is fixedly connected to the roof surface;

[0060] Each longitudinal beam can be fixedly connected to the roof surface through anchor bolts or by welding or other means. By setting the longitudinal beam to be fixedly connected to the roof, the connection strength of the photovoltaic panel is ensured.

[0061] S200. A plurality of purlins are arranged on the longitudinal beam at intervals along the extension direction of the second side, and each purlin is fixedly connected to the longitudinal beam;

[0062] Each purlin can be directly welded to the longitudinal beam or connected to the longitudinal beam by bolts. Fixing the purlin to the longitudinal beam further ensures the connection strength of the photovoltaic panels.

[0063] S300. Install counterweights on the longitudinal beam;

[0064] The counterweights can increase the overall weight of the waterproof structure of the rooftop photovoltaic modules, prevent the photovoltaic modules from being lifted in strong wind weather, and thus meet the technical requirements for preventing the photovoltaic modules from being wind-lifted.

[0065] S400. Arrange a plurality of photovoltaic panels in an array on the purlins and connect them to the purlins. Bond the top surface of the connecting part of one of the two adjacent photovoltaic panels along the extension direction of the second side to the bottom surface of the extension part of the other photovoltaic panel through a double-sided adhesive tape;

[0066] By arranging double-sided adhesive tapes between any two adjacent photovoltaic panels along the extension direction of the second side, the rigid connection between the two adjacent photovoltaic panels is transformed into a flexible connection, which can increase the contact pressure and friction force between the connecting part and the extension part, and prevent relative displacement between the connecting part and the extension part; in addition, since both sides of the double-sided adhesive tape have adhesives, the connecting parts and extension parts of any two adjacent photovoltaic panels along the extension direction of the second side can be tightly bonded together through the double-sided adhesive tape, further preventing relative displacement between the connecting part and the extension part, which is beneficial to improving the stability between any two adjacent photovoltaic panels along the extension direction of the second side.

[0067] S500. Set a channel-shaped waterproof trough in the safety gap between any two adjacent photovoltaic panels along the extension direction of the first side;

[0068] The channel-shaped waterproof trough is fixedly connected to the purlin by means of bolts, welding, etc. The number of channel-shaped waterproof troughs is the same as that of the safety gaps and they are arranged in one-to-one correspondence. The waterproof performance of the safety gap can be improved through the channel-shaped waterproof trough.

[0069] S600. Set a U-shaped pressing strip in the safety gap between any two adjacent photovoltaic panels along the extension direction of the first side, and connect the U-shaped pressing strip to the two adjacent photovoltaic panels;

[0070] By sealing the safety gap with the U-shaped pressing strip, the water seepage problem between any two adjacent photovoltaic panels along the extension direction of the first side can be solved, thereby improving the waterproof performance of any two adjacent photovoltaic panels along the extension direction of the first side.

[0071] Slip a rubber gasket over the stud of the sealing compression bolt, and connect the U-shaped bar to the purlin through the sealing compression bolt; so that both sides of the rubber gasket are hermetically connected to the head of the sealing compression bolt and the U-shaped bar respectively.

[0072] The two sides of the rubber gasket are hermetically connected to the head of the sealing compression bolt and the U-shaped bar respectively, which is conducive to preventing water seepage from occurring in the bolt holes on the U-shaped bar.

[0073] The construction method of the waterproof structure of the roof photovoltaic module provided by the present invention is to respectively arrange a connecting part and an extending part along the extending direction of the second side of each photovoltaic panel, so that the extending part of one of any two adjacent photovoltaic panels along the extending direction of the second side overlaps the connecting part of the other photovoltaic panel, thereby eliminating the gap between any two adjacent photovoltaic panels along the extending direction of the second side, which is conducive to reducing the probability of water seepage in the gap between any two adjacent photovoltaic panels along the extending direction of the second side and improving the waterproof performance of the roof photovoltaic module.

[0074] The above are only exemplary embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made under the technical concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A rooftop photovoltaic module waterproof structure, the rooftop photovoltaic module waterproof structure is used to be installed on a roof surface, the roof surface includes a first side and a second side arranged adjacently, characterized in that: include: A longitudinal beam, wherein the number of the longitudinal beams is multiple, each of the longitudinal beams is arranged on the roof surface, the extension direction of each of the longitudinal beams is parallel to the extension direction of the second side, and the multiple longitudinal beams are sequentially spaced apart along the extension direction of the first side; Purlins, wherein there are a plurality of purlins, each of which is arranged on the longitudinal beam, an extending direction of each of the purlins is parallel to an extending direction of the first side, and a plurality of the purlins are arranged in sequence and at intervals along the extending direction of the second side; Photovoltaic panels, the number of which is multiple, each of which is arranged on the purlin, at least two of which are arranged in sequence along the extension direction of the second edge, each of which is respectively provided with a connecting portion and an extending portion along the extension direction of the second edge, and for any two adjacent photovoltaic panels along the extension direction of the second edge, the extending portion of one of the photovoltaic panels is superimposed on the connecting portion of the other photovoltaic panel.

2. The waterproof structure of roof photovoltaic modules according to claim 1, characterized in that: The roof photovoltaic module waterproofing structure also includes a double-sided adhesive strip, and the number of the double-sided adhesive strips is multiple. The double-sided adhesive strips are arranged between any two adjacent photovoltaic panels along the extension direction of the second edge, and one side of the double-sided adhesive strip is connected to the connecting part of one photovoltaic panel, and the other side of the double-sided adhesive strip is connected to the extension part of another photovoltaic panel.

3. The waterproof structure of roof photovoltaic modules according to claim 2, characterized in that: The double-sided adhesive strip extends along the extension direction of the second edge, and is used to seal the gap between any two adjacent photovoltaic panels along the extension direction of the second edge.

4. The waterproof structure of roof photovoltaic modules according to claim 1, characterized in that: The dimension of the connecting portion in the extending direction of the second side is d1, 2cm≤d1≤4cm; And / or, a dimension of the extension portion in the extension direction of the second side is d2, 2cm≤d2≤4cm.

5. The waterproof structure of roof photovoltaic modules according to claim 1, characterized in that: At least two photovoltaic panels are arranged in sequence along the extension direction of the first side and form a safety gap. The size of the safety gap in the extension direction of the first side is L, and 2cm≤L≤4cm.

6. The waterproof structure of roof photovoltaic modules according to claim 5, characterized in that: The roof photovoltaic module waterproofing structure also includes a U-shaped molding, which is arranged in the safety gap and connected to the photovoltaic panels that surround the safety gap. The opening of the U-shaped molding faces the roof surface, and the side of the U-shaped molding facing away from the roof surface protrudes from the surface of the photovoltaic panel. The number of the U-shaped moldings is consistent with that of the safety gaps and they are arranged one-to-one.

7. The waterproof structure of roof photovoltaic modules according to claim 6, characterized in that: The U-shaped pressure strip is connected to the purlin through a sealing compression bolt. The roof photovoltaic module waterproof structure also includes a rubber pad. The stud of the sealing compression bolt passes through the rubber pad. Both sides of the rubber pad are respectively sealed and connected to the head of the sealing compression bolt and the U-shaped pressure strip.

8. The waterproof structure of roof photovoltaic modules according to claim 6, characterized in that: The roof photovoltaic module waterproof structure also includes an "X"-shaped waterproof groove, which is arranged in the safety gap and located between the roof surface and the U-shaped molding. The U-shaped molding is connected to the "X"-shaped waterproof groove, and the "X"-shaped waterproof groove is fixedly connected to the purlin. The number of the "X"-shaped waterproof grooves is consistent with that of the safety gap and they are arranged one-to-one.

9. The waterproof structure of roof photovoltaic assembly according to any one of claims 1 to 8, characterized in that: The roof photovoltaic module waterproof structure also includes a counterweight block, which is provided with a receiving groove, and the groove wall of the receiving groove abuts against the longitudinal beam.

10. A construction method for a waterproof structure of a roof photovoltaic module, characterized in that: The construction method of the roof photovoltaic module waterproof structure is applied to the roof photovoltaic module waterproof structure according to any one of claims 1 to 9, and the construction method of the roof photovoltaic module waterproof structure comprises the following steps: A plurality of longitudinal beams are sequentially arranged at intervals along the extension direction of the first side, and each longitudinal beam is fixedly connected to the roof surface; A plurality of purlins are sequentially arranged at intervals on the longitudinal beam along the extension direction of the second side, and each of the purlins is fixedly connected to the longitudinal beam; Installing the counterweight on the longitudinal beam; Arrange a plurality of photovoltaic panels in an array on the purlin and connect them to the purlin, and bond the top surface of the connecting portion of one of any two adjacent photovoltaic panels along the extension direction of the second side to the bottom surface of the extending portion of the other photovoltaic panel by means of a double-sided adhesive tape; An "X"-shaped waterproof groove is provided in a safety gap between any two adjacent photovoltaic panels along the extension direction of the first side; A U-shaped pressure strip is arranged in a safety gap between any two adjacent photovoltaic panels along the extension direction of the first side, and the U-shaped pressure strip is connected to the two adjacent photovoltaic panels; The rubber pad is sleeved on the stud of the sealing clamping bolt, and the U-shaped pressure strip is connected to the purlin through the sealing clamping bolt; so that the two sides of the rubber pad are respectively sealed and connected to the head of the sealing clamping bolt and the U-shaped pressure strip.

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