Photovoltaic module mounting structure and method

Abstract

The application provides a photovoltaic module mounting structure and method for connecting a photovoltaic module and a purlin, the photovoltaic module comprising a fixed frame and a photovoltaic panel, the fixed frame comprising a bottom plate, a connecting part and a buckle part, the buckle part being used for mounting the photovoltaic panel, and the connecting part being used for connecting the bottom plate and the buckle part, the purlin comprising a first clamping part, the mounting structure comprising a first connecting piece and a second connecting piece, the first connecting piece being an L-shaped connecting piece, the first connecting piece comprising a first connecting part and a second connecting part connected in a head-to-tail mode, a second clamping part being arranged on the first connecting part, the first clamping part being clamped with the second clamping part, the second connecting piece having a side wall, the side wall penetrating through the bottom plate of the fixed frame, and the second connecting part being clamped with the connecting part of the fixed frame and the side wall, the purlin of the photovoltaic module mounting structure being located at the splicing position of two adjacent fixed frames, the purlin not shielding the photovoltaic panel, and the power generation capacity of the bifacial photovoltaic module being improved.

Description

Technical Field

[0001] This invention belongs to the field of photovoltaic module technology, and more specifically, relates to a photovoltaic module installation structure and method. Background Technology

[0002] Solar photovoltaic (PV) brackets are special brackets designed for placing, installing, and fixing solar panels in a solar photovoltaic power generation system. Currently, the mainstream structure of PV power station brackets is to install and fix three purlin brackets on the back of the solar panels.

[0003] There are some problems with the three-purlin support system during the installation of bifacial solar modules. The middle purlin will block the solar panels. If the middle purlin is removed directly, the support system will affect the stability of the entire system in case of severe weather. If the middle purlin is not removed, it will block the back of the solar panels, thus affecting their power generation. Summary of the Invention

[0004] The purpose of this invention is to provide a photovoltaic module installation structure and method to solve the technical problem that purlins in existing solar photovoltaic brackets obstruct solar panels and affect power generation.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: The first aspect of the present invention provides a photovoltaic module mounting structure for connecting a photovoltaic module and a purlin. The photovoltaic module includes a fixed frame and a photovoltaic panel. The fixed frame includes a base plate, a connecting portion, and a snap-fit ​​portion. The snap-fit ​​portion is used to mount the photovoltaic panel. The connecting portion is used to connect the base plate and the snap-fit ​​portion. The purlin includes a first snap-fit ​​portion. The mounting structure includes a first connector and a second connector.

[0006] The first connector is an L-shaped connector, which includes a first connecting part and a second connecting part that are connected end to end. The first connecting part is provided with a second snap-fit ​​part, which snaps into the second snap-fit ​​part. The second connector has a side wall that passes through the bottom plate of the fixed frame. The second connecting part snaps into the connecting part and the side wall of the fixed frame.

[0007] In one embodiment, the purlin has a U-shaped structure, the purlin includes a first bottom wall and two first side walls connected to and opposite to the first bottom wall, the top of the two first side walls are respectively provided with a first flange facing inward, the first snap-fit ​​portion is the first flange, the first connecting portion is provided with a second flange parallel to the second connecting portion, the second flange is the second snap-fit ​​portion; the connecting portion is provided with a first mounting hole.

[0008] In one embodiment, the second connector includes a U-shaped connector for connecting two adjacent fixed frames. The U-shaped connector includes a second bottom wall and two side walls connected to and opposite to the second bottom wall. Each of the two side walls is provided with a second mounting hole, and the second connecting part is engaged with the first mounting hole and the second mounting hole.

[0009] In one embodiment, the connection between the second bottom wall and the two side walls is an arc-shaped structure.

[0010] In one embodiment, both the first mounting hole and the second mounting hole are rounded rectangular holes.

[0011] In one embodiment, the mounting structure further includes a T-shaped fastener, which includes a straight rod and two side wings perpendicular to the straight rod. Mounting holes are provided on the second bottom wall of the second connector and the first bottom wall of the purlin. The straight rod passes through the mounting holes on the second bottom wall and the first bottom wall. Each side wing rests on the second connecting part of the first connector.

[0012] In one embodiment, the second connector includes an L-shaped connector for connecting and fixing the frame and the purlin located at the edge. The second connector includes the side wall and a third bottom wall perpendicularly connected to the side wall. The third bottom wall is fixedly connected to the first bottom wall by a fastener. A third mounting hole is provided on the side wall, and the second connecting part is engaged in the first mounting hole and the third mounting hole.

[0013] In one embodiment, a fourth mounting hole is provided on the third bottom wall, and an inverted L-shaped bolt is inserted into the fourth mounting hole. The first end of the inverted L-shaped bolt is fixed by a nut, and the second end of the inverted L-shaped bolt rests on the outside of the first flange of the purlin. The inverted L-shaped bolt abuts against the first connecting portion of the first connector.

[0014] In one embodiment, the base plate is provided with mounting holes for the sidewall of the second connector to pass through, the fixed frame is a rectangular structure, and the mounting holes are located on the long side of the fixed frame.

[0015] A second aspect of the present invention provides a photovoltaic module installation method, the photovoltaic module installation method being used to install the photovoltaic module installation structure described above, the installation method comprising:

[0016] Place the adjacent fixed frames of the two photovoltaic modules on both sides of the purlin, and fit the connecting parts of the two fixed frames with the purlin.

[0017] The sidewall of the second connector passes through the bottom plate of the fixed frame so that the second connector encircles the purlin and the connecting portion;

[0018] The first snap-fit ​​portion of the first connector is snapped into the second snap-fit ​​portion of the purlin, and the second connecting portion of the first connector is snapped into the connecting portion of the fixed frame and the side wall of the second connector.

[0019] In one embodiment, the purlin of the photovoltaic module mounting structure is a U-shaped structure. The purlin includes a first bottom wall and two first side walls connected to and opposite to the first bottom wall. The top of the two first side walls is provided with a first flange facing inward. The first snap-fit ​​part is the first flange. The first connecting part is provided with a second flange parallel to the second connecting part. The second flange is the second snap-fit ​​part.

[0020] The step of engaging the first snap-fit ​​portion of the first connector with the second snap-fit ​​portion of the purlin includes engaging the first flange with the second flange.

[0021] In one embodiment, the second connector includes a U-shaped connector, the U-shaped connector including a second bottom wall and two side walls connected to and disposed opposite to the second bottom wall;

[0022] The photovoltaic module mounting structure also includes a T-shaped fastener, which includes a straight rod and two side wings perpendicular to the straight rod. Mounting holes are provided on the second bottom wall of the second connector and the first bottom wall of the purlin.

[0023] The installation method is characterized by: passing the straight rod of the T-shaped fastener through the mounting holes on the second bottom wall and the first bottom wall, and placing each of the side wings on the second connecting part of the first connector.

[0024] The photovoltaic module mounting structure provided by this invention is used for connecting photovoltaic modules and purlins. The photovoltaic module includes a fixed frame and a photovoltaic panel. The fixed frame includes a base plate, a connecting part, and a snap-fit ​​part. The snap-fit ​​part is used to install the photovoltaic panel, and the connecting part is used to connect the base plate and the snap-fit ​​part. The purlin includes two first snap-fit ​​parts. The mounting structure includes a first connector and a second connector. The first connector is an L-shaped connector and includes a first connector and a second connector that are connected end to end. The first connector is provided with a second snap-fit ​​part, and the first snap-fit ​​part snaps into the second snap-fit ​​part. The second connector has a side wall, and the second connector snaps into the connecting part and the side wall of the fixed frame. The purlin of this photovoltaic module mounting structure is located at the splice of two adjacent fixed frames. The purlin does not obstruct the photovoltaic panel, thereby improving the power generation of the bifacial photovoltaic module. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 A schematic diagram of the connection structure between the photovoltaic module and the purlin provided in this embodiment of the invention;

[0027] Figure 2 This is a schematic diagram of the fixed frame structure provided in an embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of the structure of the first connector of the photovoltaic module mounting structure provided in an embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram of the structure of the second connector of the photovoltaic module mounting structure provided in an embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram of the T-shaped fastener of the photovoltaic module mounting structure provided in an embodiment of the present invention;

[0031] Figure 6 This is a schematic diagram of the structure of the second connector of the photovoltaic module mounting structure provided in an embodiment of the present invention;

[0032] Figure 7 A flowchart of a photovoltaic module installation method provided in an embodiment of the present invention. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] In the description of this invention, it should be understood that the terms “comprising” and “having” as used herein, and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0035] Furthermore, in this application, unless otherwise expressly specified and limited, the terms "connection," "linking," "fixing," "installation," etc., should be interpreted broadly. For example, they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise expressly limited, those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0036] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. It should be understood that the term "and / or" as used herein is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone.

[0038] The photovoltaic module installation structure and method provided by the present invention will be described in detail below with reference to specific embodiments.

[0039] Figure 1 This is a schematic diagram of the photovoltaic module mounting structure provided in an embodiment of the present invention, illustrating the connection structure between the photovoltaic module and the purlin. Figure 2 This is a schematic diagram of the fixed frame structure provided in an embodiment of the present invention. Figure 3 This is a schematic diagram of the structure of the first connector of the photovoltaic module mounting structure provided in an embodiment of the present invention. Figure 4 Please refer to the structural diagram of the second connector of the photovoltaic module mounting structure provided in the embodiment of the present invention. Figures 1-4As shown, a first aspect of the present invention provides a photovoltaic module mounting structure for connecting a photovoltaic module 1 and a purlin 2. The photovoltaic module 1 includes a fixed frame 11 and a photovoltaic panel 12. The fixed frame 11 includes a base plate 111, a connecting part 112, and a snap-fit ​​part 113. The snap-fit ​​part 113 is used to install the photovoltaic panel 12, and the connecting part 112 is used to connect the base plate 111 and the snap-fit ​​part 113. The purlin 2 includes a first snap-fit ​​part 21, and the mounting structure includes a first connector 3 and a second connector 4.

[0040] The first connector 3 is an L-shaped connector. The first connector 3 includes a first connecting part 31 and a second connecting part 32 that are connected end to end. The first connecting part 31 is provided with a second snap-fit ​​part 311. The first snap-fit ​​part 311 snaps into the second snap-fit ​​part 311. The second connector 4 has a side wall 41. The side wall 41 passes through the bottom plate 111 of the fixed frame 11. The second connecting part 32 snaps into the connecting part 112 and the side wall 41 of the fixed frame 11.

[0041] The photovoltaic module 1 in this embodiment includes a fixed frame 11 and a photovoltaic panel 12. The photovoltaic panel 12 converts solar energy into electrical energy, and the fixed frame 11 assembles the photovoltaic panel 12 together. Generally, the fixed frame 11 is used to fix the photovoltaic panel 12 on all four sides. In this embodiment, the specific dimensions of the fixed frame 11 are not particularly limited. The snap-fit ​​part 113 of the fixed frame 11 in this embodiment is used to install the photovoltaic panel 12, and the connecting part 112 is used to connect the base plate 111 and the snap-fit ​​part 113. The connecting part 112 is generally provided with a cavity for mounting corner brackets, and adjacent frames are connected by corner brackets.

[0042] When there are multiple photovoltaic modules 1, the purlin is located at the splicing point of two adjacent photovoltaic modules 1. In this embodiment, the purlin 2 includes a first snap-fit ​​part 21. The first connector 3 of the mounting structure is an L-shaped connector. The first connector 3 includes a first connecting part 31 and a second connecting part 32 that are connected end to end. A second snap-fit ​​part 311 is provided on the first connecting part 31. The first snap-fit ​​part 21 and the second snap-fit ​​part 311 are snapped together. In this embodiment, there is no particular limitation on the specific form of the first snap-fit ​​part 21 and the second snap-fit ​​part 311. In this embodiment, the second connector 4 has a side wall 41. The side wall 41 passes through the bottom plate 111 of the fixed frame 11. The second connecting part 32 is snapped together with the connecting part 112 and the side wall 41 of the fixed frame 11. In this embodiment, one side of the connecting part 112 of two adjacent fixed frames 11 is attached to the purlin 2, and the other side of the connecting part 112 is attached to the side wall 41.

[0043] The photovoltaic module mounting structure provided in this embodiment is used to connect the photovoltaic module 1 and the purlin 2. The purlin 2 of this photovoltaic module mounting structure is located at the splicing point of two adjacent fixed frame 11. The purlin 2 does not obstruct the photovoltaic panel 12, thereby improving the power generation of the bifacial photovoltaic module. The first connector 3 is an L-shaped connector, which includes a first connecting part 31 and a second connecting part 32 that connects end to end. The first snap-fit ​​part 21 on the purlin 2 snaps into the second snap-fit ​​part 311 of the first connector 3. The side wall 41 of the second connector 4 passes through the bottom plate 111 of the fixed frame 11, and the second connecting part 32 snaps into the connecting part 112 and the side wall 41 of the fixed frame 11. This photovoltaic module mounting structure is simple and quick to assemble and disassemble.

[0044] In one specific embodiment, please refer to Figure 1 and Figure 2 The purlin 2 has a U-shaped structure and includes a first bottom wall 22 and two first side walls 23 connected to and opposite to the first bottom wall 22. The tops of the two first side walls 23 are respectively provided with inwardly facing first flanges. The first snap-fit ​​portion 21 is the first flange. The first connecting portion 31 is provided with a second flange parallel to the second connecting portion 32, and the second flange is the second snap-fit ​​portion 311. The connecting portion 112 is provided with a first mounting hole. In this embodiment, by providing a first flange on the top of the first side wall 23 of the purlin 2 and a second flange parallel to the second connecting portion 32 on the first connecting portion 31, the first flange and the second flange are snap-fitted together, making the snap-fitting method between the first snap-fit ​​portion 21 and the second snap-fit ​​portion 311 simple.

[0045] Further, please refer to Figures 1-4 The second connector 4 includes a U-shaped connector for connecting two adjacent fixed frames 11. The U-shaped connector includes a second bottom wall 42 and two side walls 41 connected to and opposite to the second bottom wall 42. Each of the two side walls 41 is provided with a second mounting hole 43. The second connecting part 32 is engaged in the first mounting hole and the second mounting hole 43. In this embodiment, the second connector 4 adopts a U-shaped connector. The two side walls 41 of the U-shaped connector and the connecting part 112 of the adjacent fixed frame 11 are engaged by the second connecting part 32 of the first connector 3. In this embodiment, the connecting part 112 is provided with a first mounting hole, and each of the two side walls 41 is provided with a second mounting hole 43. In this embodiment, the second connecting part 32 of the first connector 3 is engaged in the first mounting hole and the second mounting hole 43, making the assembly method simple.

[0046] In one specific embodiment, please refer to Figure 4The connection between the second bottom wall 42 and the two side walls 41 is an arc-shaped structure. In this embodiment, the connection between the second bottom wall 42 and the side walls 41 is an arc-shaped structure, which avoids stress concentration at the connection between the second bottom wall 42 and the side walls 41, improves the strength of the second connector 4, and further improves the service life of the installation structure.

[0047] Furthermore, both the first mounting hole and the second mounting hole 43 are rounded rectangular holes. In this embodiment, the first mounting hole and the second mounting hole 43 are set as rounded rectangular holes, and the shape of the second connecting part 32 of the first connector 3 is adapted to the shape of the first mounting hole and the second mounting hole 43. This mounting structure avoids the problem of the second connecting part 32 of the first connector 3 rotating in the first mounting hole and the second mounting hole 43 during long-term use, causing the second connecting part 32 of the first connector 3 to fall out, thereby improving the service life of the mounting structure.

[0048] Figure 5 Please refer to the structural diagram of the T-shaped fastener of the photovoltaic module mounting structure provided in the embodiment of the present invention. Figures 1-5 In one specific embodiment, the mounting structure further includes a T-shaped fastener 5, which includes a straight rod and two side wings perpendicular to the straight rod. Mounting holes are provided on the second bottom wall 42 of the second connector 4 and the first bottom wall 22 of the purlin 2. The straight rod passes through the mounting holes on the second bottom wall 42 and the first bottom wall 22. Each side wing is respectively mounted on the second connecting part 32 of the first connector 3. For example, when the purlin 2 is installed at an angle to the ground, this embodiment uses a T-shaped fastener 5. The straight rod of the T-shaped fastener 5 passes through the mounting holes on the second bottom wall 42 and the first bottom wall 22. The T-shaped fastener 5 fixes the fixed frame 11 and the photovoltaic panel 12 in the direction of the purlin, avoiding the risk of the fixed frame 11 and the photovoltaic panel 12 sliding off as a whole due to the overall movement of the fixed frame 11 and the photovoltaic panel 12 in the direction of the purlin 2. The straight rod of the T-shaped fastener 5 in this embodiment can also prevent the first flange of the first connecting part 31 of the first connecting member 3 on both sides from coming out of the second flange of the purlin 2, and at the same time prevent the second connecting part 32 of the first connecting member 3 from coming out of the first mounting hole and the second mounting hole 43, which greatly improves the stability of the installation of the fixed frame 11 and the photovoltaic panel 12. This embodiment does not impose any special restrictions on the specific size of the T-shaped fastener 5.

[0049] Figure 6 Please refer to the structural diagram of the second connector of the photovoltaic module mounting structure provided in the embodiment of the present invention. Figures 1-6Furthermore, the second connector 4 includes an L-shaped connector 44, which is used to connect and fix the frame 11 and the purlin 2 located at the edge. The L-shaped connector 44 includes a side wall 41 and a third bottom wall 45 perpendicularly connected to the side wall 41. The third bottom wall 45 is fixedly connected to the first bottom wall 22 by a fastener. A third mounting hole 43 is provided on the side wall 41. The second connecting part 32 is engaged in the first mounting hole and the third mounting hole 43. In this embodiment, the second connector 4 is used to connect and fix the frame 11 and the purlin 2 located at the edge. In this embodiment, an L-shaped connector 44 is used to connect and fix the frame 11 and the purlin 2 located at the edge. The L-shaped connector 44 is simple to manufacture and avoids the material waste caused by using a U-shaped connector. The third bottom wall 45 is fixedly connected to the first bottom wall 22 by a fastener. The fastener fixes the second connector 4 to the purlin 2, thereby fixing the photovoltaic module 12 to the purlin 2. This embodiment does not impose any special restrictions on the specific structure of the fastener; an exemplary fastener may be a common bolt or nut.

[0050] Preferably, a fourth mounting hole is provided on the third bottom wall 45, and an inverted L-shaped bolt 46 is inserted into the fourth mounting hole. The first end of the inverted L-shaped bolt 46 is fixed by a nut, and the second end of the inverted L-shaped bolt 46 rests on the outside of the first flange of the purlin 2. The inverted L-shaped bolt 46 abuts against the first connecting portion 31 of the first connector 3. In this embodiment, the fixing component is an inverted L-shaped bolt 46. The first end of the inverted L-shaped bolt 46 is fixed by a nut, and the second end of the inverted L-shaped bolt 46 rests on the outside of the first flange of the purlin 2. The inverted L-shaped bolt 46 abuts against the first connecting portion 31 of the first connector 3, preventing the first connector 3 from coming off and improving the stability of the installation structure.

[0051] In the above embodiment, the base plate 111 is provided with mounting holes for the sidewall 41 of the second connector 4 to pass through. The fixing frame 11 has a rectangular structure, and the mounting holes are located on the long side of the fixing frame 11. Preferably, the number of mounting holes on the long side of the fixing frame 11 is greater than two. When the long sides of two adjacent photovoltaic modules are fixed, the photovoltaic module 1 is fixed by two or more sets of mounting structures, which greatly improves the stability of the photovoltaic module 12.

[0052] In the above embodiments, the fixed frame 11, the first connector 3 and the second connector 4 can be made of aluminum alloy. Aluminum alloy is lightweight, high-strength, easy to install, and durable.

[0053] The photovoltaic module mounting structure provided in this embodiment of the invention is used to connect photovoltaic modules and purlins. The photovoltaic module includes a fixed frame and a photovoltaic panel. The fixed frame includes a base plate, a connecting part, and a snap-fit ​​part. The snap-fit ​​part is used to install the photovoltaic panel, and the connecting part is used to connect the base plate and the snap-fit ​​part. The purlin includes two first snap-fit ​​parts. The mounting structure includes a first connector and a second connector. The first connector is an L-shaped connector and includes a first connector and a second connector that are connected end to end. The first connector is provided with a second snap-fit ​​part, and the first snap-fit ​​part snaps with the second snap-fit ​​part. The second connector has a side wall, and the second connector snaps with the connecting part and the side wall of the fixed frame. The purlin of this photovoltaic module mounting structure is located at the splice of two adjacent fixed frames. The purlin does not block the solar panel, thereby improving the power generation of the bifacial photovoltaic module.

[0054] Figure 7 For a flowchart of the photovoltaic module installation method provided in the embodiments of the present invention, please refer to [link / reference]. Figures 1-7 A second aspect of this invention provides a photovoltaic module installation method. The photovoltaic module installation method of this embodiment is used in the photovoltaic module installation structure described in the above embodiments. The installation method includes:

[0055] S101. Place the adjacent fixed frames of the two photovoltaic modules on both sides of the purlin, and fit the connecting parts of the two fixed frames with the purlin.

[0056] Specifically, two adjacent photovoltaic modules 1 are placed on both sides of the purlin 2. The fixed frame 11 of one photovoltaic module 1 is placed on the left side of the purlin 2, and the connecting part 112 of the fixed frame 11 is attached to the first side wall of the purlin 2. The fixed frame 11 of the other photovoltaic module 1 is placed on the right side of the purlin 2, and the connecting part 112 of the other fixed frame 11 is attached to the other first side wall of the purlin 2.

[0057] S102. Pass the side wall of the second connector through the bottom plate of the fixed frame so that the second connector surrounds the purlin and the connecting part;

[0058] Specifically, in this embodiment, the second connector 4 is a U-shaped connector. The two sidewalls 41 of the U-shaped connector pass through the bottom plates 111 of the left and right fixed frames 11 respectively, so that the U-shaped connector surrounds the connection part 112 of the purlin 2 and the fixed frame 11. The first mounting hole on the connection part 112 of the fixed frame 11 of one photovoltaic module 1 corresponds to the second mounting hole 43 on one sidewall 41 of the U-shaped connector, and the first mounting hole on the connection part 112 of the fixed frame 11 of the other photovoltaic module 1 corresponds to the second mounting hole 43 on the other sidewall 41 of the U-shaped connector.

[0059] S103. Snap the first snap-fit ​​portion of the first connector to the second snap-fit ​​portion of the purlin, and snap the second connecting portion of the first connector to the connecting portion of the fixed frame and the side wall of the second connector.

[0060] Specifically, the second snap-fit ​​portion 311 of the first connector 3 is snapped into the first snap-fit ​​portion 21 of the purlin 2. Since the first connector 3 in this embodiment is an L-shaped connector, after the second snap-fit ​​portion 311 of the first connector 3 is snapped into the first snap-fit ​​portion 21 of the purlin 2, the second connecting portion 32 of the L-shaped connector is pushed into the first mounting hole on the connecting portion 112 of the fixed frame 11 and the second mounting hole 43 on the side wall 41 of the U-shaped connector, thereby realizing the snap-fit ​​of the second connecting portion 32 with the connecting portion 112 of the fixed frame 11 and the side wall 41 of the U-shaped connector.

[0061] The photovoltaic module installation method of this embodiment can conveniently and quickly fix photovoltaic modules to purlins. The purlins are located between two adjacent photovoltaic modules. After the photovoltaic modules and purlins are installed, the purlins no longer obstruct the photovoltaic panels, which greatly improves the power generation of bifacial photovoltaic modules.

[0062] In one specific embodiment, the purlin 2 of the photovoltaic module mounting structure is a U-shaped structure. The purlin 2 includes a first bottom wall 22 and two first side walls 23 connected to and opposite to the first bottom wall 22. The top of the two first side walls 23 are respectively provided with a first flange facing inward. The first flange is a first snap-fit ​​part 21. The first connecting part 31 is provided with a second flange parallel to the second connecting part 32. The second flange is a second snap-fit ​​part 311.

[0063] The step of engaging the second snap-fit ​​portion 311 of the first connector 3 with the second snap-fit ​​portion 21 of the purlin 2 includes engaging the first flange with the second flange. In this embodiment, both the first snap-fit ​​portion 21 and the second snap-fit ​​portion 311 are flange structures, which are simple to manufacture.

[0064] In one specific embodiment, the installation method further includes:

[0065] S104. Pass the straight rod of the T-shaped fastener through the mounting holes on the second bottom wall and the first bottom wall, and place each of the side wings on the second connecting part of the first connector.

[0066] When the purlin 2 is installed at an angle to the ground, this embodiment uses a T-shaped fastener 5. The straight rod of the T-shaped fastener 5 passes through the mounting holes on the first bottom wall 22 of the purlin 2 and the second bottom wall 42 of the U-shaped connector. The T-shaped fastener 5 fixes the position of the fixed frame 11 and the photovoltaic panel 12 along the direction of the purlin 2, avoiding the risk of the fixed frame 11 and the photovoltaic panel 12 sliding down as a whole due to the movement of the fixed frame 11 and the photovoltaic panel 12 along the direction of the purlin 2. The straight rod of the T-shaped fastener 5 in this embodiment can also prevent the first flange of the first connecting part 31 of the first connector 3 on both sides from coming out of the second flange of the purlin 2, and at the same time prevent the second connecting part 32 of the first connector 3 from coming out of the first mounting hole and the second mounting hole 43, which greatly improves the stability of the installation of the fixed frame 11 and the photovoltaic panel 12.

[0067] The photovoltaic module installation method of this embodiment can conveniently and quickly fix photovoltaic modules to purlins. The purlins are located at the splicing point of two adjacent photovoltaic modules. After the photovoltaic modules and purlins are installed, the purlins no longer obstruct the photovoltaic panels, which greatly improves the power generation of bifacial photovoltaic modules.

[0068] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A photovoltaic module mounting structure for connecting a photovoltaic module and a purlin, the photovoltaic module comprising a fixed frame and a photovoltaic panel, the fixed frame comprising a base plate, a connecting portion and a snap-fit ​​portion, the snap-fit ​​portion for mounting the photovoltaic panel, the connecting portion for connecting the base plate and the snap-fit ​​portion, and the purlin comprising a first snap-fit ​​portion; characterized in that: The mounting structure includes a first connector and a second connector; The first connector is an L-shaped connector, which includes a first connecting part and a second connecting part that are connected end to end. The first connecting part is provided with a second snap-fit ​​part, which snaps into the second snap-fit ​​part. The second connector has a side wall that passes through the bottom plate of the fixed frame. The second connecting part snaps into the connecting part and the side wall of the fixed frame. The purlin has a U-shaped structure. The purlin includes a first bottom wall and two first side walls that are connected to and opposite to the first bottom wall. The top of the two first side walls is provided with a first flange facing inward. The first snap-fit ​​part is the first flange. The first connecting part is provided with a second flange that is parallel to the second connecting part. The second flange is the second snap-fit ​​part. The connecting part is provided with a first mounting hole.

2. The photovoltaic module mounting structure according to claim 1, characterized in that: The second connector includes a U-shaped connector for connecting two adjacent fixed frames. The U-shaped connector includes a second bottom wall and two side walls that are connected to and opposite to the second bottom wall. Each of the two side walls is provided with a second mounting hole. The second connecting part is engaged with the first mounting hole and the second mounting hole.

3. The photovoltaic module mounting structure according to claim 2, characterized in that: The connection between the second bottom wall and the two side walls is an arc-shaped structure.

4. The photovoltaic module mounting structure according to claim 2, characterized in that: Both the first mounting hole and the second mounting hole are rounded rectangular holes.

5. The photovoltaic module mounting structure according to any one of claims 2-4, characterized in that: The mounting structure also includes a T-shaped fastener, which includes a straight rod and two side wings perpendicular to the straight rod. Mounting holes are provided on the second bottom wall of the second connector and the first bottom wall of the purlin. The straight rod passes through the mounting holes on the second bottom wall and the first bottom wall. Each side wing rests on the second connecting part of the first connector.

6. The photovoltaic module mounting structure according to claim 1, characterized in that: The second connector includes an L-shaped connector for connecting and fixing the frame and the purlin located at the edge. The second connector includes the side wall and a third bottom wall perpendicularly connected to the side wall. The third bottom wall is fixedly connected to the first bottom wall by a fastener. A third mounting hole is provided on the side wall, and the second connecting part is engaged in the first mounting hole and the third mounting hole.

7. The photovoltaic module mounting structure according to claim 6, characterized in that: A fourth mounting hole is provided on the third bottom wall, and an inverted L-shaped bolt is inserted into the fourth mounting hole. The first end of the inverted L-shaped bolt is fixed by a nut, and the second end of the inverted L-shaped bolt rests on the outside of the first flange of the purlin. The inverted L-shaped bolt abuts against the first connecting part of the first connector.

8. The photovoltaic module mounting structure according to claim 1, characterized in that: The base plate is provided with mounting holes for the side wall of the second connector to pass through, and the fixed frame is a rectangular structure with the mounting holes located on the long side of the fixed frame.

9. A photovoltaic module installation method, wherein the photovoltaic module installation method is used to install the photovoltaic module installation structure according to claim 1, characterized in that, The installation method includes: Place the adjacent fixed frames of the two photovoltaic modules on both sides of the purlin, and fit the connecting parts of the two fixed frames with the purlin. The sidewall of the second connector passes through the bottom plate of the fixed frame so that the second connector encircles the purlin and the connecting portion; The first snap-fit ​​portion of the first connector is snapped into the second snap-fit ​​portion of the purlin, and the second connecting portion of the first connector is snapped into the connecting portion of the fixed frame and the side wall of the second connector.

10. The photovoltaic module installation method according to claim 9, wherein the purlin of the photovoltaic module installation structure is a U-shaped structure, the purlin includes a first bottom wall and two first side walls connected to and opposite to the first bottom wall, the top of the two first side walls are respectively provided with a first flange facing inward, the first snap-fit ​​part is the first flange, the first connecting part is provided with a second flange parallel to the second connecting part, and the second flange is the second snap-fit ​​part; Its features are, The step of engaging the first snap-fit ​​portion of the first connector with the second snap-fit ​​portion of the purlin includes engaging the first flange with the second flange.

11. The photovoltaic module installation method according to claim 10, wherein the second connector includes a U-shaped connector, the U-shaped connector including a second bottom wall and two side walls connected to and disposed opposite to the second bottom wall; The photovoltaic module mounting structure also includes a T-shaped fastener, which includes a straight rod and two side wings perpendicular to the straight rod. Mounting holes are provided on the second bottom wall of the second connector and the first bottom wall of the purlin. Its features are, The installation method further includes: passing the straight rod of the T-shaped fastener through the mounting holes on the second bottom wall and the first bottom wall, and placing each of the side wings on the second connecting part of the first connector.

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