Photovoltaic panel installation structure, structure assembly method and photovoltaic roof

Abstract

The present invention discloses a photovoltaic panel installation structure, an assembly method of the structure and a photovoltaic roof, and relates to the technical field of photovoltaic equipment, including multiple installation panels and a mounting seat, the multiple installation panels are spliced ​​with each other, the mounting seat supports the docking positions of two adjacent installation panels, and two sides of the installation panel are respectively provided with a docking mother mouth and a docking son mouth, the docking son mouth includes a son mouth upright locking edge portion, a son mouth bending portion and a son mouth overlapping portion, the starting end of the son mouth overlapping portion is folded from the son mouth bending portion and overlaps with the son mouth bending portion and the son mouth upright locking edge portion, and the end of the son mouth overlapping portion extends downward to form a son mouth locking portion, the docking mother mouths of the adjacent installation panels are attached to the son mouth upright locking edge portion, the son mouth bending portion and the son mouth overlapping portion, the docking son mouth and the docking mother mouth are wrapped with each other to form a sealed connection, and the son mouth locking portion is connected to the mounting seat. The scheme has a simple structure and can provide sufficient supporting force to meet the stability of the installation support of the photovoltaic panel.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic equipment, and in particular to a photovoltaic panel installation structure, an assembly method of the installation structure, and a photovoltaic roof formed by photovoltaic panels arranged on the installation structure. Background Art

[0002] Photovoltaic panels are a type of power generation device that uses solar energy to convert into electrical energy. Its working principle is based on the photoelectric effect. Solar cells convert sunlight into direct current, and then the inverter converts the direct current into alternating current for power supply. Photovoltaic panels themselves do not generate electromagnetic radiation, so they will not cause harm to the human body or pollute the surrounding environment. In order to meet the installation requirements of photovoltaic panels, the existing technology installs photovoltaic panels on the roof of the house, which can facilitate the installation and maintenance of photovoltaic panels and reduce the installation cost of photovoltaic panels.

[0003] In the prior art, a Chinese invention patent with publication number CN117375495A provides an assembled photovoltaic roof, including vertical bars, the number of which is two, the bottoms of the two vertical bars are fixedly installed with support frames, the inner walls of the vertical bars are fixedly installed with multiple cross bars, the tops of the cross bars are fixedly installed with multiple L-shaped fixed blocks, one side of the L-shaped fixed block is fixedly installed with a limited block, the inside of the L-shaped fixed block is movably installed with a photovoltaic panel, both ends of the vertical bars are fixedly installed with support blocks, and the bottom of the vertical bars is fixedly installed with a U-shaped block. In the invention, by setting structures such as a rotating block and a pressing plate, the operator presses the pressing plate, which will cause the rotating block to flip with the rotating rod as the axis, and then the operator puts the photovoltaic panel into the inside of the L-shaped fixed block. Through the cooperation of the rotating block and the pressing plate, the operator is more convenient during installation, saves a lot of manpower, and also improves the installation efficiency. However, the roof structure provided by the patent is relatively complex. When there are many photovoltaic panels installed on it, the supporting force of the roof structure will be insufficient. Therefore, it is necessary to provide a photovoltaic panel installation structure with high structural strength and good wind resistance. Summary of the invention

[0004] The purpose of the present invention is to provide a photovoltaic panel installation structure, an assembly method of the structure and a photovoltaic roof in view of the deficiencies in the prior art.

[0005] A photovoltaic panel installation structure comprises a plurality of installation panels and a mounting seat, wherein the plurality of installation panels are spliced ​​with each other, and the mounting seat supports and fixes the docking positions of two adjacent installation panels, and a docking female port and a docking male port are respectively arranged on both sides of the installation panel, and the docking female ports on the two adjacent installation panels are connected with the docking male port, and the docking male port comprises a male port upright locking edge portion, a male port bending portion and a male port overlapping portion, and the starting end of the male port overlapping portion is folded from the male port bending portion and overlaps with the male port bending portion and the male port upright locking edge portion, and the end of the male port overlapping portion extends downward in parallel with the male port upright locking edge portion to form a male port locking portion, and the docking female ports of the adjacent installation panels are attached to the male port upright locking edge portion, the male port bending portion and the male port overlapping portion, and the docking male port and the docking female port are wrapped around each other to form a sealed connection, and the male port locking portion is connected to the mounting seat.

[0006] Furthermore, the docking mother mouth includes a mother mouth upright lock edge portion, a mother mouth first bend portion and a mother mouth second bend portion, the mother mouth upright lock edge portion and the mother mouth first bend portion are both arranged in close contact with the overlapping portion of the sub-mouth, and the mother mouth second bend portion is arranged between the sub-mouth bend portion and the sub-mouth upright lock edge portion.

[0007] Furthermore, a bending area is provided at the connection position between the sub-mouth overlapping portion and the sub-mouth bending portion, and the bending area is an extended bend of 180°.

[0008] Furthermore, a return bend is provided at the end of the second bend of the female port, and the return bend is an extended bend of 180°, and the bending radius of the bending area and the return bend is not less than the material thickness of a mounting panel.

[0009] Furthermore, a reinforcement groove is provided on the installation panel.

[0010] Furthermore, an inverted U-shaped installation slot is provided on the installation seat, and the sub-mouth locking portion is provided in an S shape, and the sub-mouth locking portion is slidably embedded in the installation slot.

[0011] Furthermore, the positions of the docking female port and the docking male port on the installation panel are higher than the height of the installation panel, and the cross-sections of the installation panel, the docking female port and the docking male port form a structure with a concave middle portion.

[0012] Furthermore, the installation panel and the docking female port and docking male port thereon are an integrally formed structure.

[0013] The assembly method of the mounting structure includes the following methods:

[0014] S1: Lay a single installation panel on the roof, with the docking joint of the installation panel facing the laying direction;

[0015] S2: Sliding and embedding the locking part of the joint joint into the mounting groove of the mounting seat on the roof, and then fixing the mounting seat to the roof purlin;

[0016] S3: Lay the next installation panel on the roof, so that the butt joint of the first installation panel is butted with the butt joint of the second installation panel, and the upright locking edge of the joint and the first bending portion of the joint are both in contact with the overlapping portion of the butt joint;

[0017] S4: bend the second bending portion of the female opening to fit it to the bending portion of the female opening;

[0018] S5: Synchronously bend the bent portion of the sub-mouth and the first bent portion of the female mouth, so that the first bent portion of the female mouth is attached to the upright locking edge portion of the sub-mouth;

[0019] S6: welding the gap between the butt joint and the butt joint;

[0020] S7: Repeat steps S2-S6 to continue arranging the installation panel.

[0021] A photovoltaic roof comprises a plurality of photovoltaic panels, which are arranged on the above-mentioned mounting structure. The width of the photovoltaic panels is the same as the interval between a docking female opening and a docking male opening on the mounting panel. The photovoltaic panels are embedded between the docking female opening and the docking male opening. The docking female opening, the docking male opening, the mounting panel and the photovoltaic panels form a cavity.

[0022] The advantages of the present invention compared with the prior art are:

[0023] First, in this scheme, a docking female port and a docking male port are respectively provided on both sides of the installation panel, and the docking female ports on two adjacent installation panels are connected to the docking male ports, and the splicing of multiple installation panels is realized through the mutual cooperation of the docking female port and the docking male port, and the docking male port includes a male port upright locking edge portion, a male port bending portion and a male port overlapping portion, and the starting end of the male port overlapping portion is folded from the male port bending portion and overlaps with the male port bending portion and the male port upright locking edge portion, and the end of the male port overlapping portion extends downward in parallel with the male port upright locking edge portion to form a male port locking portion, and the docking female ports of the installation panels at adjacent positions are attached to the male port upright locking edge portion, the male port bending portion and the male port overlapping portion, and the docking male port and the docking female port are wrapped around each other to form a sealed connection, and the male port locking portion is connected to the mounting seat.

[0024] Second: This solution sets a bending area at the connection position of the overlapping part of the sub-mouth and the bending part of the sub-mouth, and a return part is set at the end of the second bending part of the mother mouth. The bending area and the return part in this solution are both extended and bent by 180°, and the bending curvature radius of the bending area and the return part is not less than the material thickness of one installation panel, thereby improving the connection stability between the docking mother mouth and the docking sub-mouth and preventing the bending area and the return part of the installation panel from breaking.

[0025] Third: In this solution, the width of the photovoltaic panel is the same as the interval between the docking female port and the docking male port on the installation panel. The photovoltaic panel is embedded between the docking female port and the docking male port, and the docking female port, the docking male port, the installation panel and the photovoltaic panel form a cavity; when in use, the circuit of the photovoltaic panel can be passed through the formed cavity, and the cavity formed by the docking female port, the docking male port, the installation panel and the photovoltaic panel is used to shield and protect the connection circuit of the photovoltaic panel, thereby improving the service life of the circuit and the structural integrity of the photovoltaic roof; in addition, the cavity formed by the docking female port, the docking male port, the installation panel and the photovoltaic panel can also be used to discharge accumulated water, and the accumulated water can be discharged in time through the cavity, thereby preventing the weight of the accumulated water from crushing the photovoltaic roof; in this solution, the docking position of two adjacent installation panels can form a sealed connection through the mutual wrapping of the docking female port and the docking male port, which can not only meet the stable support for the photovoltaic panel but also better ensure the sealing and waterproof performance of the roof. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of the photovoltaic roof;

[0027] Figure 2 It is a structural schematic diagram of the installation structure of the photovoltaic panel;

[0028] Figure 3 It is a structural schematic diagram of the docking female port and the docking male port on two adjacent installation panels;

[0029] Figure 4 for Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0030] Figure 5 This is the main view of the installation panel;

[0031] Figure 6 for Figure 5 A schematic diagram of the enlarged structure at B in the middle;

[0032] Figure 7 for Figure 5 Schematic diagram of the enlarged structure at C in the middle;

[0033] Figure 8 This is a schematic diagram of the installation structure during assembly. Figure 1 :

[0034] Fig. 9 This is a schematic diagram of the installation structure during assembly. Figure 2 :

[0035] Fig.10 This is a schematic diagram of the installation structure during assembly. Figure 3 :

[0036] Fig.11 This is a schematic diagram of the installation structure during assembly. Figure 4 :

[0037] Fig.12 This is the main view of the photovoltaic roof.

[0038] Figure markings: installation panel 1, reinforcement groove 11, installation seat 2, installation slide groove 21, docking female mouth 3, female mouth upright locking edge portion 31, female mouth first bending portion 32, female mouth second bending portion 33, docking sub-mouth 4, sub-mouth upright locking edge portion 41, sub-mouth bending portion 42, sub-mouth overlapping portion 43, sub-mouth locking portion 44, photovoltaic panel 5. DETAILED DESCRIPTION

[0039] Combined with Figure 1-12 As shown, a photovoltaic panel installation structure includes multiple installation panels 1 and installation seats 2. The multiple installation panels 1 are spliced ​​with each other, and the installation seats 2 support the docking positions of two adjacent installation panels 1. The installation structure in this scheme can be used for roof construction, and can provide sufficient supporting strength to meet the installation of photovoltaic panels 5. It can also be used as a high-strength roof surface structure, which can make the steel structure roof have better mechanical properties and wind-resistant performance. The stamped installation seat 2 of this scheme is fixedly set on the purlin of the roof to ensure that the installation seat 2 can provide sufficient supporting force and wind-resistant ability.

[0040] Preferably, docking female ports 3 and docking male ports 4 are respectively provided on both sides of the installation panel 1, and the docking female ports 3 on two adjacent installation panels 1 are connected to the docking male ports 4, and the splicing of multiple installation panels 1 is achieved through the mutual cooperation of the docking female ports 3 and the docking male ports 4.

[0041] like Figure 3-4 As shown, the docking sub-mouth 4 includes a sub-mouth upright locking edge portion 41, a sub-mouth bending portion 42 and a sub-mouth overlapping portion 43, the starting end of the sub-mouth overlapping portion 43 is folded from the sub-mouth bending portion 42 and overlaps the sub-mouth bending portion 42 and the sub-mouth upright locking edge portion 41, and the end of the sub-mouth overlapping portion 43 extends downward in parallel to the sub-mouth upright locking edge portion 41 to form a sub-mouth locking portion 44, the docking female port 3 of the mounting panel 1 at the adjacent position is attached to the sub-mouth upright locking edge portion 41, the sub-mouth bending portion 42 and the sub-mouth overlapping portion 43, the docking sub-mouth 4 and the docking female port 3 are wrapped with each other to form a sealed connection, and the sub-mouth locking portion 44 is connected to the mounting seat 2;

[0042] Before the docking sub-mouth 4 is assembled, the upright locking edge portion 41 and the sub-mouth bending portion 42 form a right angle, and the sub-mouth overlapping portion 43 is tightly fitted with the upright locking edge portion 41 and the sub-mouth bending portion 42, so as to facilitate the assembly of the docking sub-mouth 4 and the docking female mouth 3.

[0043] The docking female port 3 comprises a female port upright lock edge portion 31, a female port first bending portion 32 and a female port second bending portion 33. The female port upright lock edge portion 31 and the female port first bending portion 32 are both arranged in contact with the sub-port overlapping portion 43, and the female port second bending portion 33 is arranged between the sub-port bending portion 42 and the sub-port upright lock edge portion 41;

[0044] Before assembling the docking female port 3, a right angle is formed between the female port upright locking edge portion 31 and the female port first bending portion 32, and a right angle is formed between the female port first bending portion 32 and the female port second bending portion 33, so as to facilitate the assembly of the docking sub-port 4 and the docking female port 3.

[0045] Preferably, a bending area is provided at the connection position between the overlapping portion 43 of the sub-mouth and the bending portion 42 of the sub-mouth, and a return portion is provided at the end of the second bending portion 33 of the mother mouth. The bending area and the return portion in this scheme are both extended and bent by 180°, and the bending curvature radius of the bending area and the return portion is not less than the material thickness of one installation panel 1, thereby improving the connection stability between the docking mother mouth 3 and the docking sub-mouth 4 and preventing the bending area and the return portion of the installation panel 1 from breaking.

[0046] Preferably, a reinforcement groove 11 is provided on the mounting panel 1 , so as to increase the supporting strength and rigidity of the mounting panel 1 , and further improve the installation stability of the photovoltaic panel 5 .

[0047] Preferably, the mounting seat 2 is provided with an inverted U-shaped mounting slot 21, the sub-mouth locking portion 44 is provided in an S-shape, and the sub-mouth locking portion 44 is slidably embedded in the mounting slot 21. The sub-mouth locking portion 44 and the mounting slot 21 cooperate to achieve a sliding connection for fixing the mounting panel 1, and the sliding amount is not limited, thereby ensuring the normal thermal expansion and contraction performance of the mounting panel 1 on the roof, and preventing the connection from being torn due to the thermal expansion and contraction of the mounting panel 1. This further improves the installation safety and durability of the photovoltaic panel 5.

[0048] Preferably, the positions of the docking female port 3 and the docking male port 4 on the mounting panel 1 are higher than the height of the mounting panel 1, and the cross-sections of the mounting panel 1, the docking female port 3 and the docking male port 4 form a structure with a concave middle portion, and the concave middle portion structure can improve the supporting strength and rigidity of the mounting panel 1, while also forming a cavity for drainage or guidance, wherein the highest position of the docking female port 3 and the docking male port 4 and the lowest position of the mounting panel 1 are spaced at a height of 50-100mm, preferably set to 80mm, thereby further improving the structural strength and setting stability of the mounting panel 1.

[0049] The material of the installation panel and the fixing seat in this solution is a metal sheet. The metal installation panel is connected to the roof purlin through the fixing seat. The sub-mouth locking part of the installation panel is slidably embedded in the installation slide groove of the mounting seat, and then the mounting seat is fixed; therefore, the metal installation panel can arbitrarily expand and contract with heat and cold on the roof. This is the fundamental reason why the influence of the thermal expansion and contraction performance of the installation panel 1 after splicing on the deformation of the metal roof can be completely eliminated; that is, the connection between the installation panel 1 and the mounting seat 2 will not be torn due to the influence of thermal expansion and contraction. It is beneficial to improve the durability and safety performance of the roof, and can be better used for the installation support of the photovoltaic panel 5.

[0050] The mounting panel 1 in this solution and the docking female port 3 and the docking male port 4 thereon are an integrated structure, so that the structural strength of the mounting panel 1 can be improved; the mounting panel 1 in this solution can be selected to have a width of 200mm-700mm, preferably 500mm, and its specific width can be set according to the width of the photovoltaic panel 5, so that the mounting panel 1 can be stably matched with the photovoltaic panel 5; the thickness of the metal mounting panel 1 is 0.5mm~1.0mm, preferably 0.6mm; the thickness of the mounting seat is 1.0~2.5mm, preferably 1.5mm. In this way, the supporting strength and structural stability of the mounting panel 1 can be guaranteed, and the installation and setting of the photovoltaic panel 5 can be better realized.

[0051] The one-piece mounting panel 1 adopted in this solution completely breaks the limitation of the current stainless steel roof welding technology. It is no longer limited to the thickness of the sub-mouth locking part 44 of the sliding support in the prior art must be less than 0.2 mm, but the thickness of the sliding piece is the same as the thickness of the metal roof panel; it also breaks the limitation of the sliding piece length of the sliding support in the prior art, but the length of the sliding piece is the same as the length of the roof panel. This greatly improves the mechanical properties of the roof panel formed by splicing the mounting panel 1, such as the wind-proof performance will be completely improved.

[0052] It should be clarified that in the present solution, the docking sub-mouth 4 on the installation panel 1 is folded to form a sub-mouth overlapping portion 43, so as to increase the structural stability when it is assembled with the docking female port 3 of the adjacent installation panel 1. At the same time, the sub-mouth overlapping portion 43 extends downward to form a sub-mouth locking portion 44. The sub-mouth locking portion 44 cooperates with the installation seat 2 to realize the connection between the installation panel 1 and the roof, thereby further improving the structural strength.

[0053] Combined with Figure 8-11 As shown, the assembly method of the installation structure comprises the following steps:

[0054] S1: Figure 8 As shown, a single installation panel 1 is laid on the roof, and the docking port 4 of the installation panel 1 is arranged toward the laying direction;

[0055] S2: Fig. 9 As shown, the mounting seat 2 is fixed on the roof, and the locking portion 44 of the docking mouth 4 is buckled into the mounting slot 21; then the mounting seat 2 is fixed to the roof purlin.

[0056] S3: Fig.10 As shown, the next installation panel 1 is laid on the roof, the docking sub-mouth 4 of the first installation panel 1 is docked with the docking female mouth 3 of the second installation panel 1, and the female mouth upright lock edge portion 31 and the female mouth first bending portion 32 are both in contact with the sub-mouth overlapping portion 43;

[0057] S4: bend the second bending portion 33 of the mother opening to make it fit to the bending portion 42 of the child opening;

[0058] S5: Fig.11 As shown, the sub-mouth bending portion 42 and the female mouth first bending portion 32 are synchronously bent, so that the female mouth first bending portion 32 is attached to the sub-mouth upright locking edge portion 41;

[0059] S6: welding the gap between the butt joint 4 and the butt joint 3;

[0060] S7: Repeat steps S2-S6 for subsequent deployment.

[0061] Alternatively, in this solution, dedicated automatic resistance welding equipment is used to perform full-length resistance welding on the gap between the butt joint 4 and the butt joint 3 .

[0062] Alternatively, in the present solution, in steps S4 and S5, the butt joint 4 and the butt joint 3 can be vertically locked at 360 degrees by an automatic locking device.

[0063] A photovoltaic roof, such as Figure 1 As shown, it includes a plurality of photovoltaic panels 5, and the plurality of photovoltaic panels 5 are arranged on the above-mentioned mounting structure. The width of the photovoltaic panel 5 is the same as the interval between the docking female port 3 and the docking male port 4 on the mounting panel 1, and the photovoltaic panel 5 is embedded between the docking female port 3 and the docking male port 4. Fig.12 As shown, the docking female port 3, the docking male port 4, the mounting panel 1 and the photovoltaic panel 5 form a cavity;

[0064] When in use, the circuit of the photovoltaic panel 5 can be passed through the formed cavity, and the cavity formed by the docking female port 3, the docking male port 4, the installation panel 1 and the photovoltaic panel 5 is used to shield and protect the connection circuit of the photovoltaic panel 5, thereby improving the service life of the circuit and the structural integrity of the photovoltaic roof;

[0065] In addition, the cavity formed by the docking female port 3, the docking male port 4, the installation panel 1 and the photovoltaic panel 5 can also be used to discharge the accumulated water. The accumulated water can be discharged in time through the cavity, thereby preventing the weight of the accumulated water from crushing the photovoltaic roof;

[0066] In this solution, the docking positions of two adjacent installation panels 1 can form a sealed connection through the mutual wrapping of the docking female port 3 and the docking male port 4, which can not only provide stable support for the photovoltaic panel 5 but also ensure the sealing and waterproof performance of the roof.

[0067] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0068] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0069] In the description of the present invention, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0070] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A photovoltaic panel mounting structure, comprising a plurality of mounting panels (1) and a mounting seat (2), wherein the plurality of mounting panels (1) are spliced ​​together, and the mounting seat (2) supports the butt joint positions of two adjacent mounting panels (1). It is characterized in that The mounting panel (1) is provided with a docking female opening (3) and a docking male opening (4) on both sides, respectively. The docking female openings (3) on two adjacent mounting panels (1) are connected to the docking male openings (4). The docking male openings (4) comprise a male opening upright locking edge portion (41), a male opening bent portion (42) and a male opening overlapping portion (43). The starting end of the male opening overlapping portion (43) is folded from the male opening bent portion (42) to overlap with the male opening bent portion (42) and the male opening upright locking edge portion (41), and the end of the male opening overlapping portion (43) extends downwardly parallel to the male opening upright locking edge portion (41) to form a male opening locking portion (44). The docking female openings (3) of the mounting panels (1) at adjacent positions are attached to the male opening upright locking edge portion (41), the male opening bent portion (42) and the male opening overlapping portion (43). The docking male openings (4) and the docking female openings (3) are mutually enclosed. The sub-mouth locking portion (44) is connected to the mounting seat (2); the docking female mouth (3) comprises a female mouth upright lock edge portion (31), a female mouth first bend portion (32) and a female mouth second bend portion (33); the female mouth upright lock edge portion (31) and the female mouth first bend portion (32) are both arranged in close contact with the sub-mouth overlapping portion (43); the female mouth second bend portion (33) is arranged between the sub-mouth bend portion (42) and the sub-mouth upright lock edge portion (41); a bending area is arranged at the connection position between the sub-mouth overlapping portion (43) and the sub-mouth bend portion (42), and the bending area is an extended bend of 180 degrees; a return bend portion is arranged at the end of the female mouth second bend portion (33), and the return bend portion is an extended bend of 180 degrees, and the bending radius of the bending area and the return bend portion is not less than the material thickness of one mounting panel (1).

2. The mounting structure according to claim 1, It is characterized in that The installation panel (1) is provided with a reinforcement groove (11).

3. The mounting structure according to claim 1, It is characterized in that An inverted U-shaped mounting slot (21) is provided on the mounting seat (2); the sub-mouth locking portion (44) is arranged in an S shape; the sub-mouth locking portion (44) is slidably embedded in the mounting slot (21).

4. The mounting structure according to claim 1, It is characterized in that The positions of the docking female opening (3) and the docking male opening (4) on the installation panel (1) are higher than the height of the installation panel (1); and the cross-sections of the installation panel (1), the docking female opening (3) and the docking male opening (4) form a structure with a concave middle portion.

5. The mounting structure according to claim 1, It is characterized in that The installation panel (1) and the docking female port (3) and the docking male port (4) thereon are an integrally formed structure.

6. An assembly method based on the mounting structure according to any one of claims 1 to 5, It is characterized in that The following methods are included: S1: laying a single installation panel (1) on the roof, with the docking port (4) of the installation panel (1) arranged in a direction facing the laying direction; S2: Sliding and embedding the sub-mouth locking portion (44) on the docking sub-mouth (4) into the mounting groove (21) of the mounting seat on the roof, and then fixing the mounting seat (2) to the roof purlin; S3: Lay the next installation panel (1) on the roof, so that the docking male opening (4) of the first installation panel (1) and the docking female opening (3) of the second installation panel (1) are docked with each other, and the female opening upright locking edge portion (31) and the female opening first bending portion (32) are both in contact with the male opening overlapping portion (43); S4: bending the second bending portion (33) of the female opening to make it fit to the bending portion (42) of the female opening; S5: Synchronously bend the sub-mouth bending portion (42) and the female mouth first bending portion (32) so that the female mouth first bending portion (32) fits onto the sub-mouth upright locking edge portion (41); S6: welding the gap between the butt joint (4) and the butt joint (3); S7: Repeat steps S2-S6 to continue arranging the installation panel (1).

7. A photovoltaic roof, comprising a plurality of photovoltaic panels, It is characterized in that A plurality of photovoltaic panels (5) are arranged on a mounting structure as described in any one of claims 1 to 5, the width of the photovoltaic panel (5) is the same as the interval between the docking female opening (3) and the docking male opening (4) on the mounting panel (1), the photovoltaic panel (5) is embedded between the docking female opening (3) and the docking male opening (4), and the docking female opening (3), the docking male opening (4), the mounting panel (1) and the photovoltaic panel (5) form a cavity.

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