Photovoltaic module mounting structure and photovoltaic roof system

Abstract

The utility model discloses a photovoltaic assembly installation structure and a photovoltaic roof system, the photovoltaic assembly installation structure comprises a photovoltaic assembly and a connecting frame, the connecting frame comprises a first connecting part and a second connecting part which are oppositely arranged, the first connecting part is bonded with the photovoltaic assembly, and the second connecting part is used for being bonded with a roof board in a roof structure; the second connecting part comprises two connecting sections, an opening is formed between the two connecting sections, the end, close to the opening, of each connecting section is connected with a bent part extending towards the first connecting part, and the end, away from the opening, of each connecting section is connected with the first connecting part through a side part; an avoiding space extending to the opening is formed between the two bent parts in each connecting frame, and the avoiding space in at least one connecting frame is used for containing a protruding structure in the roof structure. According to the embodiment of the utility model, the wind uplift resistance of the photovoltaic roof system comprising the photovoltaic assembly mounting structure can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic, in particular to a photovoltaic module installation structure and a photovoltaic roof system. Background Art

[0002] In the implementation of photovoltaic power generation, in order to save installation space, photovoltaic modules are often installed on the roof.

[0003] In the related art, the method of installing photovoltaic modules on the roof is usually as follows: first, install fixtures on the roof, then install rails on the fixtures, and install photovoltaic modules on the rails.

[0004] In the photovoltaic roof system formed after the above photovoltaic modules are installed on the roof, the fixtures are clamped on the roof. However, the fixtures are easily detached from the roof, resulting in poor wind uplift resistance of the photovoltaic roof system. Summary of the Utility Model

[0005] The utility model provides a photovoltaic module installation structure and a photovoltaic roof system, aiming to at least solve the problem of poor wind uplift resistance of the photovoltaic roof system in the prior art.

[0006] In a first aspect, an embodiment of the utility model provides a photovoltaic module installation structure, including a photovoltaic module and a connecting frame. The connecting frame includes a first connecting portion and a second connecting portion arranged opposite to each other. The first connecting portion is bonded to the photovoltaic module, and the second connecting portion is used to be bonded to a roof panel in a roof structure.

[0007] The second connecting portion includes two connecting segments, an opening is formed between the two connecting segments, a bending portion extending towards the first connecting portion is connected to one end of the connecting segment close to the opening, and the other end of the connecting segment away from the opening is connected to the first connecting portion through a side portion.

[0008] An avoidance space extending to the opening is formed between the two bending portions in the connecting frame, and at least one avoidance space in the connecting frame is used to accommodate a protruding structure in the roof structure, and the protruding structure protrudes from a roof bonding surface in the roof panel for bonding with the second connecting portion.

[0009] Optionally, a first protrusion is provided on a surface of the connecting segment facing away from the first connecting portion.

[0010] The connecting segment is bonded to the roof bonding surface through glue, and the thickness of the glue between the connecting segment and the roof bonding surface is greater than or equal to the height of the first protrusion.

[0011] Optionally, along the width direction of the connecting frame, the size of the first protrusion is smaller than the width of the connecting segment.

[0012] The number of the first protrusions provided on the connection section is multiple, and the multiple first protrusions are scattered along the length direction of the connection frame, or the first protrusions are strip-shaped, and the length direction of the first protrusions is parallel to the length direction of the connection frame.

[0013] Optionally, a second protrusion is provided on the first connection portion, and the second protrusion is used for positioning the side of the photovoltaic module;

[0014] The second protrusion higher than the top surface of the first connection portion is further used for limiting the side of the photovoltaic module.

[0015] Optionally, the first connection portion has a glue receiving groove, and the notch of the glue receiving groove faces away from the second connection portion;

[0016] The second protrusion is located in the glue receiving groove.

[0017] Optionally, one connection frame is bonded to a plurality of the photovoltaic modules.

[0018] Optionally, the angle between the bending portion and the connection section is greater than 0° and less than 90°.

[0019] Optionally, a hem is connected to the end of the bending portion away from the connection section;

[0020] The hem fits the surface of the bending portion close to the connection section.

[0021] Optionally, the end of the first connection portion is connected to the side portion through a first fillet;

[0022] The radius of the first fillet is greater than or equal to 3 times the wall thickness of the first connection portion and less than or equal to 6 times the wall thickness of the first connection portion.

[0023] Optionally, the connection frame further includes a reinforcing rib, one end of the reinforcing rib is connected to the first connection portion, and the other end of the reinforcing rib is connected to the side portion.

[0024] In a second aspect, an embodiment of the present invention provides a photovoltaic roofing system, including a roofing structure and the photovoltaic module mounting structure as described above, and the roofing structure includes a roof panel.

[0025] Optionally, the roof panel has a roofing bonding surface bonded to the connection frame in the photovoltaic module mounting structure; the roof panel includes a bottom plate portion and a convex portion, and the roofing bonding surface is the top plane of the convex portion, or the roof panel includes a bottom plate portion, and the roofing bonding surface is the top plane of the bottom plate portion;

[0026] The roof structure includes at least one protruding structure protruding from the roof bonding surface; the protruding structure includes the edge-locking structure in the roof panel and / or the corner part of the middle convex part of the corner type in the roof panel protruding from the roof bonding surface; alternatively, the roof structure further includes fasteners and roof purlins, the roof panel is connected to the roof purlins through the fasteners, and the protruding structure is the head of the fasteners.

[0027] Optionally, the length direction of the connecting frame is parallel to the extending direction of the roof panel;

[0028] Along the extending direction of the roof panel, on one roof panel, the connecting frame is a whole piece, or the connecting frame is divided into multiple segments.

[0029] In the embodiment of the present invention, the photovoltaic module is bonded to the roof panel through the connecting frame. The bonding between the connecting frame and the photovoltaic module and the roof panel is surface bonding, which can increase the bonding area between the connecting frame and the photovoltaic module and the roof panel, making it difficult for the photovoltaic module to break away from the connecting frame and the connecting frame to break away from the roof panel, thereby improving the wind uplift resistance of the photovoltaic roof system including the photovoltaic module installation structure.

[0030] In addition, when the connecting frame only has an opening between two connecting segments, after the connecting frame is bonded to the roof panel, the opening is sealed, and the connecting frame and the roof panel enclose a circumferentially closed cavity, which can improve the overall strength of the connecting frame and the roof panel and further enhance the wind uplift resistance of the photovoltaic roof system including the photovoltaic module installation structure. In addition, through the setting of the bending part, the strength of the connecting frame can be enhanced and the deformation of the connecting frame can be reduced. In addition, compared with the method of installing the photovoltaic module through components such as clamps, rails, pressing blocks, bolts, nuts, and gaskets, in this embodiment, the photovoltaic module can be fixed through the connecting frame and glue, with a simple structure, fewer components, and lower costs.

[0031] The above description is only an overview of the technical solution of the present invention. In order to understand the technical means of the present invention more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention are hereinafter specifically exemplified. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 Structural schematic diagram of the photovoltaic module installation structure and the roof structure provided by the embodiment of the present invention Figure 1 ;

[0033] Figure 2 Exploded structural schematic diagram of the photovoltaic module installation structure and the roof structure provided by the embodiment of the present invention;

[0034] Figure 3Structural schematic of the photovoltaic module installation structure and the roof structure provided by the embodiment of the present utility model Figure 2 ;

[0035] Figure 4 Structural schematic of the photovoltaic module installation structure and the roof structure provided by the embodiment of the present utility model Figure 3 ;

[0036] Figure 5 Structural schematic of the photovoltaic module installation structure and the roof structure provided by the embodiment of the present utility model Figure 4 ;

[0037] Figure 6 Structural schematic of the photovoltaic module installation structure and the roof structure provided by the embodiment of the present utility model Figure 5 ;

[0038] Figure 7 Structural schematic of the photovoltaic module installation structure and the roof structure provided by the embodiment of the present utility model Figure 6 ;

[0039] Figure 8 Structural schematic of the photovoltaic module installation structure and the roof structure provided by the embodiment of the present utility model Figure 7 ;

[0040] Figure 9 Structural schematic of the connecting frame in the photovoltaic module installation structure provided by the embodiment of the present utility model Figure 1 ;

[0041] Figure 10 Structural schematic of the connecting frame in the photovoltaic module installation structure provided by the embodiment of the present utility model Figure 2 ;

[0042] Figure 11 Structural schematic of the connecting frame in the photovoltaic module installation structure provided by the embodiment of the present utility model Figure 3 ;

[0043] Figure 12 Front three-dimensional schematic diagram of the connecting frame in the photovoltaic module installation structure provided by the embodiment of the present utility model;

[0044] Figure 13 is Figure 12 Enlarged schematic diagram of part A in

[0045] Figure 14 Structural schematic diagram of the local flanging in the connecting frame of the photovoltaic module installation structure provided by the embodiment of the present utility model;

[0046] Figure 15 Back three-dimensional schematic diagram of the connecting frame in the photovoltaic module installation structure provided by the embodiment of the present utility model;

[0047] Figure 16 is Figure 15 an enlarged schematic view of part B in

[0048] Figure 17 a schematic structural view of a roof panel in the photovoltaic roof system provided by an embodiment of the present utility model;

[0049] Figure 18 a three-dimensional schematic view of multiple roof panels in the photovoltaic roof system provided by an embodiment of the present utility model;

[0050] Figure 19 a three-dimensional schematic view of a roof panel and a connecting frame in the photovoltaic roof system provided by an embodiment of the present utility model;

[0051] Figure 20 a three-dimensional schematic view of a roof panel, a connecting frame and a photovoltaic module in the photovoltaic roof system provided by an embodiment of the present utility model;

[0052] Figure 21 is Figure 20 an enlarged schematic view of part C in

[0053] Reference numerals:

[0054] 1 - Photovoltaic module, 2 - Connecting frame, 201 - First connecting part, 2011 - Glue receiving groove, 2012 - Top surface, 202 - Second connecting part, 2021 - Connecting section, 203 - Side part, 204 - Bending part, 205 - Opening, 206 - First protrusion, 207 - Second protrusion, 2071 - Convex hull, 2072 - Local flanging, 208 - Flange, 209 - First fillet, 210 - Reinforcing rib, 211 - Avoidance space, 3 - Roof panel, 301 - Bottom plate part, 302 - Convex part, 3021 - Semi - trapezoidal convex part, 3022 - JiaoChi - type middle convex part, 3023 - Trapezoidal convex part, 303 - Edge - locking structure, 304 - Roof bonding surface, 4 - Fastener, 5 - Roof purlin, 6 - Side support, 7 - Glue. Detailed implementation manners

[0055] Next, the exemplary embodiments of the present utility model will be described in more detail with reference to the accompanying drawings. Although the exemplary embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided so that the present utility model can be more thoroughly understood and the scope of the present utility model can be completely conveyed to those skilled in the art.

[0056] In a first aspect, referring to Figures 1 to 11, an embodiment of the present utility model discloses a photovoltaic module installation structure, which includes a photovoltaic module 1 and a connecting frame 2. The connecting frame 2 includes a first connecting portion 201 and a second connecting portion 202 arranged opposite to each other. The first connecting portion 201 is bonded to the photovoltaic module 1, and the second connecting portion 202 is used to be bonded to a roof panel 3 in a roof structure; the second connecting portion 202 includes two connecting segments 2021, an opening 205 is formed between the two connecting segments 2021, a bending portion 204 extending towards the first connecting portion 201 is connected to one end of the connecting segment 2021 close to the opening 205, and one end of the connecting segment 2021 far from the opening 205 is connected to the first connecting portion 201 through a side portion 203; an avoidance space 211 extending to the opening 205 is formed between the two bending portions 204 in the connecting frame 2, and the avoidance space 211 in at least one connecting frame 2 is used to accommodate a protruding structure in the roof structure, and the protruding structure protrudes from a roof bonding surface 304 in the roof panel 3 for bonding with the second connecting portion 202.

[0057] Among them, the photovoltaic module 1 is preferably a frameless photovoltaic module to prevent dust accumulation on the photovoltaic module. The photovoltaic module 1 has an opposite light-receiving surface and a backlight surface. The light-receiving surface is the side of the photovoltaic module that absorbs sunlight, that is, the front side of the photovoltaic module, and the backlight surface is the back side of the photovoltaic module. When the photovoltaic module 1 is a frameless photovoltaic module, the backlight surface of the photovoltaic module 1 is directly bonded to the connecting frame 2. The material of the connecting frame 2 can be steel, aluminum alloy, fiber-reinforced composite material, etc. The function of the connecting frame 2 is to provide an adhesive surface for the photovoltaic module 1. One connecting frame 2 is bonded to multiple photovoltaic modules 1. For example, one connecting frame 2 can be bonded to 2, 3, 4, 5, etc. photovoltaic modules 1. In other embodiments, one connecting frame 2 can also be bonded to one photovoltaic module 1.

[0058] Refer to Figure 18 , the roof structure includes multiple roof panels 3, and the multiple roof panels 3 in the roof structure are arranged along the width direction of the roof panel 3. When the connecting frame 2 is bonded to the roof panel 3, the width direction of the connecting frame 2 is parallel to the width direction of the roof panel 3. One connecting frame 2 can be bonded to two adjacent roof panels 3, and one connecting frame 2 can also be bonded to a single roof panel 3.

[0059] The second connecting portion 202 is specifically used to be bonded to the roof bonding surface 304 in the roof panel 3. The two connecting segments 2021 in the second connecting portion 202 are respectively bonded to the two roof bonding surfaces 304, and the two roof bonding surfaces 304 are respectively located on both sides of the protruding structure along the width direction of the roof panel 3. When one connecting frame 2 is bonded to two adjacent roof panels 3, the two roof bonding surfaces 304 are respectively the surfaces on the two adjacent roof panels 3.

[0060] The bent portion 204 is arranged at an angle with the connecting section 2021. The angle between the bent portion 204 and the connecting section 2021 can be a right angle or an acute angle. Along the height direction of the connecting frame 2, the height of the bent portion 204 is less than the height of the side portion 203. Preferably, the height of the bent portion 204 is less than half of the height of the side portion 203.

[0061] The connecting frame 2 itself has a cavity penetrating along its length direction, and the opening 205 communicates with the cavity. Preferably, the connecting frame 2 has only one opening 205 located between the two connecting sections 2021 to ensure the structural strength of the connecting frame 2. The avoidance space 211 can specifically refer to Figure 9 the area shown by the dashed box in. The protruding structures in the roof structure are arranged at intervals along the width direction of the roof panel 3. This photovoltaic module mounting structure includes a plurality of connecting frames 2. Referring to Figures 1 to 7 when some of the connecting frames 2 are bonded to the roof panel 3, the protruding structures in the roof structure are received in the avoidance space 211 in the connecting frame 2. Referring to Figure 8 when some of the connecting frames 2 are bonded to the roof panel 3, the protruding structures in the roof structure are not received in the avoidance space 211 in the connecting frame 2.

[0062] When the photovoltaic module 1 is fixed to the roof panel 3 through the connecting frame 2, first bond the connecting frame 2 to the roof panel 3, and then bond the photovoltaic module 1 to the first connecting portion 201 in the connecting frame 2. When the connecting frame 2 is bonded to the roof panel 3, the protruding structure passes through the opening 205 and extends into the avoidance space 211, so that the second connecting portion 202 in the connecting frame 2 can be bonded to the roof bonding surface 304 in the roof panel 3.

[0063] The photovoltaic module 1 is bonded to the first connecting portion 201 through the adhesive 7, and the roof bonding surface 304 is bonded to the connecting section 2021 through the adhesive 7. When the connecting frame 2 is bonded to the roof panel 3, it is necessary to first apply a glue line on the roof bonding surface 304. When applying the glue line, it can be applied continuously or in sections. When the photovoltaic module 1 is bonded to the connecting frame 2, it is necessary to first apply a glue line on the first connecting portion 201. When applying the glue line, it can be applied continuously or in sections. Under the condition of ensuring the bonding strength, the way of applying the glue in sections can reduce the glue cost.

[0064] Before applying the glue line on the roof bonding surface 304, the roof bonding surface 304 can be cleaned first, and then a primer is coated on the roof bonding surface 304. The primer is used to enhance the adhesion of the roof bonding surface 304, so as to enhance the bonding strength between the connecting frame 2 and the roof panel 3. It should be noted that for the painted roof panel 3, the paint at the roof bonding surface 304 needs to be removed first before cleaning the roof bonding surface 304, and the roof panel 3 is repainted after the connecting frame 2 is bonded to the roof panel 3.

[0065] In the related art, the installation of the photovoltaic module 1 is realized through components such as clamps, guide rails, pressing blocks, bolts, nuts, and gaskets. The clamps are clamped on the roof surface, which is likely to damage the roof surface. In this embodiment, the connecting frame 2 is only bonded to the roof panel 3 by the adhesive 7, and it is not easy to damage the coating and the matrix of the roof panel 3.

[0066] In the related art, when the installation of the photovoltaic module 1 is realized through components such as clamps, guide rails, pressing blocks, bolts, nuts, and gaskets, the fixing points of the photovoltaic module 1 are distributed in a point-like manner, and the wind uplift resistance performance of the photovoltaic roof system is poor. In the related art, due to the existence of the protruding structure, when the photovoltaic module 1 is directly bonded to the roof panel 3, the photovoltaic module 1 is in line contact with the protruding structure, which is difficult to bond, and even if bonded, the bonding area between the photovoltaic module 1 and the roof panel 3 is small. In this embodiment, the photovoltaic module 1 is bonded to the roof panel 3 through the connecting frame 2. The bonding between the connecting frame 2 and the photovoltaic module 1 and the roof panel 3 is surface bonding, which can increase the bonding area between the connecting frame 2 and the photovoltaic module 1 and the roof panel 3, making it difficult for the photovoltaic module 1 to break away from the connecting frame 2 and the connecting frame 2 to break away from the roof panel 3, thereby improving the wind uplift resistance performance of the photovoltaic roof system including the photovoltaic module installation structure.

[0067] In addition, when the connecting frame 2 only has the opening 205 located between the two connecting sections 2021, after the connecting frame 2 is bonded to the roof panel 3, the opening 205 is sealed, and the connecting frame 2 and the roof panel 3 enclose a circumferentially closed cavity, which can enhance the overall strength of the connecting frame 2 and the roof panel 3 and further improve the wind uplift resistance performance of the photovoltaic roof system including the photovoltaic module installation structure. In addition, through the setting of the bending portion 204, the strength of the connecting frame 2 can be enhanced and the deformation of the connecting frame 2 can be reduced. In addition, compared with the method of installing the photovoltaic module through components such as clamps, guide rails, pressing blocks, bolts, nuts, and gaskets, in this embodiment, the fixing of the photovoltaic module 1 can be realized only through the connecting frame 2 and the adhesive 7, with a simple structure, fewer components, lower cost, and high construction efficiency.

[0068] When the connecting frame 2 is bonded to the roof panel 3 and the protruding structure in the roof structure is accommodated in the avoidance space 211 of the connecting frame 2, the protruding structure is located below the first connecting portion 201 and between the two side portions 203. At this time, the connecting frame 2 can play a protective role for the protruding structure. When the connecting frame 2 is bonded to the roof panel 3 and the protruding structure in the roof structure is accommodated in the avoidance space 211 of the connecting frame 2, the connecting frame 2 can specifically enhance the strength of the area near the protruding structure in the roof structure.

[0069] In some embodiments, a first protrusion 206 is provided on the surface of the connecting section 2021 facing away from the first connecting portion 201; the thickness of the adhesive 7 between the connecting section 2021 and the roof bonding surface 304 is greater than or equal to the height of the first protrusion 206.

[0070] Among them, the first protrusion 206 can be in a dot structure, a block structure, a strip shape, etc. The first protrusion 206 can be adhered to the roof bonding surface 304 through the glue 7. At this time, the thickness of the glue 7 between the connecting section 2021 and the roof bonding surface 304 is greater than the height of the first protrusion 206. In this embodiment, through the setting of the first protrusion 206, the thickness of the glue 7 between the connecting section 2021 and the roof bonding surface 304 can be ensured, so as to ensure the bonding strength between the connecting frame 2 and the roof panel 3.

[0071] In some embodiments, along the width direction of the connecting frame 2, the size of the first protrusion 206 is smaller than the width of the connecting section 2021; referring to Figure 15 and Figure 16 , the number of the first protrusions 206 provided on one connecting section 2021 is multiple, and the multiple first protrusions 206 are distributed in a scattered dot shape along the length direction of the connecting frame 2, or, referring to Figure 10 , the first protrusion 206 is in a strip shape, and the length direction of the first protrusion 206 is parallel to the length direction of the connecting frame 2.

[0072] Among them, the width direction of the connecting frame 2 can be referred to the direction shown by the D arrow in Figure 9 , and the length direction of the connecting frame 2 can be referred to the direction shown by the E arrow in Figure 12 , Figure 15 , Figure 19 . When the number of the first protrusions 206 provided on one connecting section 2021 is multiple, the first protrusions 206 are located in the middle of the connecting section 2021 along its width direction. The shape of the cross section of the first protrusion 206 can be circular, square, polygonal, etc., and the cross section of the first protrusion 206 is also the section of the first protrusion 206 perpendicular to the height direction of the connecting frame 2. When the multiple first protrusions 206 are distributed in a scattered dot shape along the length direction of the connecting frame 2, it is beneficial to reduce the cost and ensure the bonding area between the connecting frame 2 and the roof panel 3.

[0073] When the first protrusion 206 is in a strip shape, the shape of the cross section of the first protrusion 206 perpendicular to the length direction of the connecting frame 2 can be square, trapezoidal, arc-shaped, etc. The first protrusion 206 can be provided at the end of the connecting section 2021. When the material of the connecting frame 2 is aluminum alloy or fiber reinforced composite material, the connecting frame 2 is usually formed by pultrusion. When the first protrusion 206 is in a strip shape, it is beneficial to the pultrusion molding of the connecting frame 2.

[0074] In some embodiments, referring to Figures 3 to 4 , Figures 9 to 14 , Figure 21 , a second protrusion 207 is provided on the first connecting portion 201. The second protrusion 207 is used for positioning the side of the photovoltaic module 1, and the second protrusion 207 higher than the top surface 2012 of the first connecting portion 201 is also used for limiting the side of the photovoltaic module 1.

[0075] When the second protrusion 207 functions as a positioning member, it is specifically used for positioning the side of the photovoltaic module 1 along the length direction of the connecting frame 2. When the second protrusion 207 functions as a limiting member, it is specifically used for limiting the side of the photovoltaic module 1 along the length direction of the connecting frame 2. The number of the second protrusions 207 provided on one first connecting portion 201 may be multiple, and the multiple second protrusions 207 are arranged at intervals along the length direction of the connecting frame 2, and the photovoltaic module 1 is located between two adjacent second protrusions 207.

[0076] On the one hand, when the photovoltaic module 1 is bonded to the connecting frame 2, the second protrusion 207 functions to position the side of the photovoltaic module 1, so as to facilitate the layout of the photovoltaic module 1; on the other hand, when the second protrusion 207 is higher than the top surface 2012 of the first connecting portion 201, the second protrusion 207 is also used for limiting the side of the photovoltaic module 1. At this time, the second protrusion 207 can prevent the photovoltaic module 1 from sliding down; on the other hand, when the second protrusion 207 is higher than the light-receiving surface of the photovoltaic module 1, the second protrusion 207 also functions as a lightning protection lightning arrester.

[0077] As an example, each second protrusion 207 is a convex hull 2071, and the convex hull 2071 is provided on the bottom wall of the glue-containing groove 2011. The cross-sectional shape of the convex hull 2071 can be circular, square, polygonal, etc. The cross-section of the convex hull 2071 is also the section of the convex hull 2071 perpendicular to the height direction of the connecting frame 2. Figure 3 The convex hull 2071 shown in is higher than the light-receiving surface of the photovoltaic module 1. At this time, the convex hull 2071 is used for positioning and limiting the photovoltaic module 1, and also functions as a lightning protection lightning arrester.

[0078] As another example, referring to Figure 4 and Figure 14 , each second protrusion 207 is a local flanging 2072. The glue-containing groove 2011 is surrounded by a glue-containing bottom plate and two glue-containing side plates. When the local flanging 2072 is formed, a "C"-shaped slit can be first cut at the edge of a specific area of the glue-containing bottom plate to separate the specific area from the main body part, and then the specific area is folded upward to form the local flanging 2072. After the local flanging 2072 is formed, the specific area of the original glue-containing bottom plate becomes a notch, and the notch is preferably located below the photovoltaic module 1. Figure 4 and Figure 14 The local flanging 2072 shown in is higher than the light-receiving surface of the photovoltaic module 1. At this time, the local flanging 2072 is used for positioning and limiting the photovoltaic module 1, and also functions as a lightning protection lightning arrester.

[0079] In some embodiments, the first connecting portion 201 has a glue-containing groove 2011, and the notch of the glue-containing groove 2011 faces away from the second connecting portion 202; the second protrusion 207 is located in the glue-containing groove 2011.

[0080] The glue storage groove 2011 is used to store glue 7. Along the width direction of the connecting frame 2, the size of the second protrusion 207 is smaller than the width of the glue storage groove 2011. Along the width direction of the connecting frame 2, the size of the second protrusion 207 is preferably half the width of the glue storage groove 2011. The glue storage groove 2011 can store a certain thickness of glue 7, so as to ensure the thickness of the glue 7 for bonding the photovoltaic module 1 and the connecting frame 2, so as to ensure the bonding strength between the photovoltaic module 1 and the connecting frame 2.

[0081] In some embodiments, the roof panel 3 has a roof bonding surface 304 bonded to the connecting frame 2 in the photovoltaic module mounting structure; the roof panel 3 includes a bottom plate portion 301 and a convex portion 302, and the roof bonding surface 304 is the top plane of the convex portion 302, or, the roof panel 3 includes a bottom plate portion 301, and the roof bonding surface 304 is the top plane of the bottom plate portion 301; the roof structure includes at least one protruding structure protruding from the roof bonding surface 304; the protruding structure includes a locking structure 303 in the roof panel 3 and / or a corner of the protruding roof bonding surface 304 in the corner-type middle convex portion 3022 in the roof panel 3; or, the roof structure also includes a fastener 4 and a roof purlin 5, the roof panel 3 is connected to the roof purlin 5 through the fastener 4, and the protruding structure is the head of the fastener 4.

[0082] The convex portion 302 protrudes upward from the bottom plate portion 301, and the convex portion 302 is divided into a semi-trapezoidal convex portion 3021, an angular intermediate convex portion 3022, a trapezoidal convex portion 3023, etc. The roof panel 3 has a locking edge structure 303 at both ends along its width direction, and two adjacent roof panels 3 are buckled together through adjacent locking edge structures 303. The locking edge structure 303 can be a vertical hook-shaped locking edge, a vertical arc locking edge, etc. Figures 1 to 4 , Figure 17 , Figure 21 The locking structure 303 shown in FIG. 1 is a vertical hook-shaped locking structure. Figure 6 The locking structure 303 shown in FIG. 3 is a vertical arc locking structure.

[0083] Reference Figure 1 and Figure 17 The roof panel 3 includes a bottom plate portion 301, a semi-trapezoidal convex portion 3021 and an upright hook-shaped locking edge, and two adjacent semi-trapezoidal convex portions 3021 in two adjacent roof panels 3 are assembled into a complete trapezoid. The roof structure also includes an edge support 6, and the edge support 6 is adjacent to the roof purlin 5. The edge support 6 is a boat-shaped support, and a connecting piece is provided on the top of the edge support 6, and the upright hook-shaped locking edge is connected to the connecting piece of the edge support 6.

[0084] Reference Figure 5, the roof panel 3 includes a corrugated middle convex portion 3022. The corrugated middle convex portion 3022 is located between the two ends of the roof panel 3 along its width direction. The corrugated middle convex portion 3022 includes a trapezoidal portion and a corner portion provided at the top of the trapezoidal portion. The roof bonding surface 304 is the top plane of the trapezoidal portion in the corrugated middle convex portion 3022, and the shape of the corner portion can be a quadrilateral.

[0085] Refer to Figure 6 , when the edge-locking structure 303 in the roof panel 3 is a vertical circular arc edge-locking, the roof panel 3 includes a bottom plate portion 301 and does not include a convex portion 302. At this time, the roof bonding surface 304 is the top plane of the bottom plate portion 301. After the connecting frame 2 is bonded to the roof panel 3, the vertical circular arc edge-locking extends into the connecting frame 2.

[0086] Refer to Figure 7 and Figure 8 , the roof panel 3 includes a plurality of trapezoidal convex portions 3023. The fastener 4 passes through some of the trapezoidal convex portions 3023 and is connected to the roof purlin 5. The fastener 4 can be a self-tapping screw. Figure 7 In Figure 8 In

[0087] In this embodiment, for different types of roof structures, a general connecting frame 2 can be adopted. The structure of the general connecting frame 2 can be Figure 9 the structure shown. This general connecting frame 2 can be adapted to roof structures including different types of protruding structures.

[0088] In some embodiments, for different types of roof structures, different connecting frames 2 can also be adopted. For example, for the roof panel 3 including a vertical hook-shaped edge-locking, Figure 11 the connecting frame 2 shown can be adopted. At this time, the included angle between the bending portion 204 and the connecting section 2021 of the connecting frame 2 is a right angle. The edge-locking structure 303 of the roof panel 3 is a vertical hook-shaped edge-locking, and the two match each other. The bending portion 204 of the connecting frame 2 can play a further strengthening role in the edge-locking structure 303, increasing the connection strength of the edge-locking structure 303, and can also play a protective role such as preventing rainwater and hail for the edge-locking structure 303. For the roof panel 3 including the corrugated middle convex portion 3022, Figure 9 the connecting frame 2 shown can be adopted, which can further increase the strength of the corrugated middle convex portion 3022.

[0089] In some embodiments, the included angle between the bending portion 204 and the connecting section 2021 is greater than 0° and less than 90°. Among them, the included angle between the bending portion 204 and the connecting section 2021 can refer to Figure 9As shown in the figure, the angle α between the bending part 204 and the connecting section 2021 can be 30°, 45°, 50°, 60°, 65°, 70°, etc.

[0090] Preferably, the angle between the bending part 204 and the connecting section 2021 is similar to the angle between the bottom hypotenuse of the corner part in the angle-purlin type middle convex part 3022 and the roof adhesive surface 304. For example, the difference in angles can be less than or equal to 5°. Along the width direction of the connecting frame 2, the width of the opening 205 is less than the maximum width of the corner part in the angle-purlin type middle convex part 3022. Refer to Figure 5 , when the inclined bending part 204 cooperates with the corner part in the angle-purlin type middle convex part 3022, the wind uplift resistance performance of the photovoltaic roof system can be further improved.

[0091] In some embodiments, the angle between the bending part 204 and the connecting section 2021 is 90°. In this embodiment, the connecting frame 2 is adapted to the roof panel 3 including an upright hook-shaped edge lock. When the connecting frame 2 is adhered to the roof panel 3 including an upright hook-shaped edge lock, the upright hook-shaped edge lock is located between the two bending parts 204 and is adjacent to the bending part 204. When the glue 7 between the connecting section 2021 and the roof adhesive surface 304 overflows to the bending part 204, part of the bending part 204 is adhered to the bottom of the upright hook-shaped edge lock through the glue 7, which can increase the adhesive area between the connecting frame 2 and the roof panel 3 and improve the strength at the upright hook-shaped edge lock.

[0092] In some embodiments, a folded edge 208 is connected to the end of the bending part 204 away from the connecting section 2021; the folded edge 208 fits the surface of the bending part 204 close to the connecting section 2021. Among them, along the extending direction of the bending part 204, the size of the folded edge 208 is smaller than that of the bending part 204. When the material of the connecting frame 2 is steel, there is a risk of rusting. When rusting occurs, it usually starts to rust at the folded edge 208 first, and then rusts down through the bending part 204 to the connecting section 2021. In this embodiment, through the settings of the folded edge 208 and the bending part 204, the path of rusting to the connecting section 2021 can be extended, the rusting speed of the connecting section 2021 can be delayed, and thus the service life of the connecting frame 2 can be extended.

[0093] In some embodiments, the end of the first connecting part 201 is connected to the side part 203 through a first rounded corner 209; the radius of the first rounded corner 209 is greater than or equal to 3 times the wall thickness of the first connecting part 201 and less than or equal to 6 times the wall thickness of the first connecting part 201.

[0094] Among them, the radius of the first rounded corner 209 is preferably greater than or equal to 4 times the wall thickness of the first connecting portion 201 and less than or equal to 6 times the wall thickness of the first connecting portion 201. One end of the connecting section 2021 away from the bending portion 204 is connected to the side portion 203 through a second rounded corner, and the radius of the second rounded corner is smaller than the radius of the first rounded corner. If there is no rounded corner at the end of the first connecting portion 201, when the connecting frame 2 is tilted, it will cause stress concentration in the photovoltaic module 1 and easily cause the photovoltaic module 1 to break. In this embodiment, when the end of the first connecting portion 201 is connected to the side portion 203 through the first rounded corner 209 and the radius of the first rounded corner 209 is within the above range, the radius of the first rounded corner 209 is relatively large, which can avoid stress concentration in the photovoltaic module 1 caused by the tilt of the connecting frame 2.

[0095] In some embodiments, referring to Figure 10 , the connecting frame 2 further includes a reinforcing rib 210. One end of the reinforcing rib 210 is connected to the first connecting portion 201, and the other end of the reinforcing rib 210 is connected to the side portion 203.

[0096] Among them, when the material of the connecting frame 2 is aluminum alloy or fiber-reinforced composite material, the reinforcing rib 210 can be provided. When the material of the connecting frame 2 is steel, the reinforcing rib 210 can be not provided. The end of the reinforcing rib 210 away from the side portion 203 specifically extends below the glue-containing groove 2011. Two reinforcing ribs 210 can be provided on one connecting frame 2, and the two reinforcing ribs 210 can be symmetrically arranged. Through the arrangement of the reinforcing rib 210, the strength of the connecting frame 2 can be enhanced, and the reliability of the connecting frame 2 under strong wind, typhoon and other conditions can be improved.

[0097] In a second aspect, an embodiment of the present invention discloses a photovoltaic roofing system, including a roofing structure and the photovoltaic module mounting structure provided in the first aspect. The roofing structure includes a roofing panel 3.

[0098] Referring to Figure 20 , a heat dissipation channel is formed among the photovoltaic module 1, two adjacent connecting frames 2, and the roofing panel 3. The heat dissipation channel utilizes the principle of air convection to achieve the effects of ventilation and heat dissipation. The heat generated by the photovoltaic module 1 can be directly discharged through the heat dissipation channel, which can reduce the temperature of the photovoltaic module 1 and improve the power generation efficiency of the photovoltaic module 1. The heat dissipation channel is circumferentially closed, which can further improve the wind uplift resistance performance of the photovoltaic roofing system.

[0099] In some embodiments, referring to Figure 19 , the length direction of the connecting frame 2 is parallel to the extending direction of the roofing panel 3; along the extending direction of the roofing panel 3, on one roofing panel 3, the connecting frame 2 is a whole piece, or the connecting frame 2 is divided into multiple sections.

[0100] Wherein, when the connecting frame 2 is an integral piece, the length of the connecting frame 2 is less than or equal to the length of the roof panel 3, and one connecting frame 2 is bonded to a plurality of photovoltaic modules. When the connecting frame 2 is divided into multiple segments, each segment can be bonded to a photovoltaic module 1. When the connecting frame 2 is an integral piece, the installation of the connecting frame 2 is simple. When the connecting frame 2 is an integral piece, it is beneficial to reduce costs.

[0101] It should be noted that in this text, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including that element.

[0102] The embodiments of the present invention have been described above in conjunction with the accompanying drawings. However, the present invention is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present invention, those of ordinary skill in the art can also make many forms without departing from the spirit and scope protected by the present invention and the claims. These all fall within the protection scope of the present invention.

Claims

1. A photovoltaic module installation structure, characterized in that: It comprises a photovoltaic assembly and a connecting frame, wherein the connecting frame comprises a first connecting portion and a second connecting portion which are arranged opposite to each other, wherein the first connecting portion is bonded to the photovoltaic assembly, and the second connecting portion is used to bond to a roof panel in a roof structure; The second connecting portion includes two connecting segments, an opening is formed between the two connecting segments, one end of the connecting segment close to the opening is connected to a bent portion extending toward the first connecting portion, and one end of the connecting segment away from the opening is connected to the first connecting portion through a side portion; An escape space extending to the opening is formed between the two bent portions in the connecting frame, and the escape space in at least one of the connecting frames is used to accommodate a protruding structure in the roof structure, wherein the protruding structure protrudes from a roof bonding surface in the roof panel for bonding to the second connecting portion.

2. The photovoltaic module installation structure according to claim 1, characterized in that: A first protrusion is provided on the surface of the connecting section facing away from the first connecting portion; The connecting section is bonded to the roof bonding surface by glue, and the thickness of the glue between the connecting section and the roof bonding surface is greater than or equal to the height of the first protrusion.

3. The photovoltaic module installation structure according to claim 2, characterized in that: Along the width direction of the connecting frame, the size of the first protrusion is smaller than the width of the connecting section; There are multiple first protrusions arranged on the connecting section, and the multiple first protrusions are distributed in a scattered manner along the length direction of the connecting frame, or the first protrusions are in a strip shape, and the length direction of the first protrusions is parallel to the length direction of the connecting frame.

4. The photovoltaic module installation structure according to claim 1, characterized in that: A second protrusion is provided on the first connecting portion, and the second protrusion is used for positioning the side of the photovoltaic component; The second protrusion higher than the top surface of the first connecting portion is also used to limit the side edge of the photovoltaic component.

5. The photovoltaic module installation structure according to claim 4, characterized in that: The first connecting portion has a glue containing groove, and the notch of the glue containing groove is away from the second connecting portion; The second protrusion is located in the glue containing groove.

6. The photovoltaic module installation structure according to claim 1, characterized in that: A connecting frame is bonded to a plurality of photovoltaic components.

7. The photovoltaic module installation structure according to claim 1, characterized in that: The bending The angle between the portion and the connecting section is greater than 0° and less than 90°.

8. The photovoltaic module installation structure according to claim 1, characterized in that: One end of the bending portion away from the connecting section is connected with a folded edge; The folded edge is in contact with a surface of the bent portion close to the connecting section.

9. The photovoltaic module installation structure according to claim 1, characterized in that: The end of the first connecting portion is connected to the side portion through a first fillet; The radius of the first fillet is greater than or equal to 3 times the wall thickness of the first connecting portion and less than or equal to 6 times the wall thickness of the first connecting portion.

10. The photovoltaic module installation structure according to claim 1, characterized in that: The connecting frame further comprises a reinforcing rib, one end of which is connected to the first connecting portion, and the other end of which is connected to the side portion.

11. A photovoltaic roof system, characterized in that: It comprises a roof structure and the photovoltaic module installation structure according to any one of claims 1 to 10, wherein the roof structure comprises a roof panel.

12. The photovoltaic roof system according to claim 11, characterized in that: The roof panel has a roof bonding surface bonded to the connecting frame in the photovoltaic module mounting structure; the roof panel includes a bottom plate portion and a convex portion, and the roof bonding surface is the top plane of the convex portion, or the roof panel includes a bottom plate portion, and the roof bonding surface is the top plane of the bottom plate portion; The roof structure includes at least one protruding structure protruding from the roof bonding surface; The protruding structure includes a locking structure in the roof panel and / or a corner portion of an angle-type middle protrusion in the roof panel that protrudes from the roof bonding surface; or, the roof structure also includes a fastener and a roof purlin, the roof panel is connected to the roof purlin via the fastener, and the protruding structure is the head of the fastener.

13. The photovoltaic roof system according to claim 11, characterized in that: The length direction of the connecting frame is parallel to the extension direction of the roof panel; Along the extension direction of the roof panel, on one of the roof panels, the connecting frame is a whole strip, or the connecting frame is divided into multiple sections.

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