A prefabricated photovoltaic system

Abstract

An embodiment of the present application provides a prefabricated photovoltaic system, which specifically includes: a photovoltaic support that can be deployed and folded; a photovoltaic module fixed to the photovoltaic support; and a tensioning mechanism connected to the photovoltaic support, where the tensioning mechanism is used to limit the deployment angle of the photovoltaic support. The prefabricated photovoltaic system described in the embodiment of the present application is convenient for transportation and has a high installation efficiency.

Description

[0001] Cross - reference to related applications

[0002] This application claims the priority of a Chinese patent application with the application number 202421294100.5, titled "A Prefabricated Photovoltaic System", filed with the Chinese Patent Office on June 6, 2024. The entire content thereof is incorporated herein by reference. Technical field

[0003] This application belongs to the technical field of photovoltaics, and particularly relates to a prefabricated photovoltaic system. Background art

[0004] In traditional photovoltaic power stations, a single photovoltaic array consists of a pile foundation, a support, and photovoltaic modules. The on - site construction sequence of the three is that the pile foundation is constructed first, the support is installed on the qualified pile foundation after acceptance, and after the two are completed to form a component support system, the photovoltaic modules are then installed on the support, thereby forming a photovoltaic power generation unit. The above construction sequence cannot be adjusted, the entire construction process is extremely cumbersome, the construction time of the photovoltaic power generation unit is long, the labor cost is high, and the overall installation efficiency is low. Summary of the invention

[0005] This application aims to provide a prefabricated photovoltaic system to solve the problem of low installation efficiency of existing photovoltaic systems.

[0006] To solve the above - mentioned technical problems, this application is implemented as follows:

[0007] This application discloses a prefabricated photovoltaic system, which specifically includes:

[0008] A photovoltaic support that can be unfolded and folded;

[0009] Photovoltaic modules fixed to the photovoltaic support;

[0010] And a tensioning mechanism connected to the photovoltaic support, which is used to limit the unfolding angle of the photovoltaic support.

[0011] In the embodiment of the present application, the prefabricated photovoltaic system can install the photovoltaic modules on the photovoltaic support before leaving the factory. Then, by folding the photovoltaic support, the whole prefabricated photovoltaic system can be folded, so that the overall volume of the prefabricated photovoltaic system is small, which is convenient for the transportation of the prefabricated photovoltaic system. After transporting the prefabricated photovoltaic system to the installation site, only need to install the photovoltaic support on the installation platform at the installation site to deploy the prefabricated photovoltaic system. The tensioning mechanism can be used to limit the deployment angle between the photovoltaic supports to improve the structural stability of the prefabricated photovoltaic system. In this way, the prefabricated photovoltaic system described in the embodiment of the present application is not only convenient for transportation, but also can greatly shorten the on-site construction time, simplify the manual operation process, and greatly improve the on-site installation efficiency.

[0012] Optionally, a plurality of limiting plates arranged along the first direction are further provided on the photovoltaic support. When the photovoltaic support is deployed to a preset angle, the adjacent limiting plates abut against each other to prevent the photovoltaic support from continuing to deploy, so that the photovoltaic support can be maintained at the preset deployment angle to improve the deployment stability of the prefabricated photovoltaic system.

[0013] Optionally, the photovoltaic support includes a plurality of cross beams arranged at intervals along the first direction. A support unit is arranged between two adjacent cross beams, and the support unit is respectively hinged to the two adjacent cross beams to realize the switching between the deployed state and the folded state.

[0014] Optionally, a toe board is provided at the bottom of the cross beam. When the photovoltaic support is deployed, the toe board is used to prevent the cross beam from flipping. When the photovoltaic support is folded, the adjacent toe boards abut against each other. When the support is in the folded state, the toe boards on two adjacent cross beams abut against each other. To avoid collision between adjacent components and improve the transportation safety of the prefabricated photovoltaic system. Moreover, during the deployment process of the prefabricated photovoltaic system, the toe board can also be used to prevent the cross beam from rolling on the installation platform and improve the assembly efficiency of the prefabricated photovoltaic system.

[0015] Optionally, the toe plate includes a bottom plate extending along the first direction and upturned plates provided at both ends of the bottom plate; the bottom plate is connected to the bottom of the cross beam, the upturned plates extend away from the bottom plate, and the extension direction of the upturned plates forms an angle with the plane where the bottom plate is located, and the value range of the angle is 0-90 degrees. When the photovoltaic support is in the unfolded state, the bottom plate can increase the contact area between the cross beam and the installation platform or the counterweight, so that the cross beam can be prevented from flipping. When the photovoltaic support is in the folded state, the upturned plates on the toe plates at the bottoms of two adjacent cross beams can abut against each other to avoid collision between adjacent components and improve the transportation safety of the prefabricated photovoltaic system.

[0016] Optionally, an anti-roll plate extending outwards is provided on the second hinge. When the support is in the folded state, the anti-roll plate is located between the first support, the second support and the cross beam. Once the assembled photovoltaic system has a tendency of rolling over, the anti-roll plate can abut against the cross beam to prevent the assembled photovoltaic system from continuing to roll over, achieving the purpose of anti-roll and improving the transportation safety of the assembled photovoltaic system.

[0017] Optionally, at least one of the third part and the fourth part of the second hinge is provided with a limiting part. When the photovoltaic support is folded, the third part and the fourth part abut against each other through the limiting part to prevent the assembled photovoltaic system from tipping over.

[0018] Optionally, the longitudinal beam of the first support is the first longitudinal beam, the longitudinal beam of the second support is the second longitudinal beam, and at least one of the first longitudinal beam and the second longitudinal beam has an opening facing away from the photovoltaic module, and the width of the longitudinal beam with the opening is greater than the width of the other longitudinal beam. In this way, in the folded state, the longitudinal beam with the opening and the larger width can accommodate the other longitudinal beam to reduce the volume after folding.

[0019] Optionally, along the first direction, the first longitudinal beam and the second longitudinal beam are arranged in a staggered manner to avoid mutual interference between the first longitudinal beam and the second longitudinal beam in the folded state and reduce the volume of the support after folding.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. Description of the Drawings

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, wherein:

[0022] Figure 1One of the schematic structural diagrams of a prefabricated photovoltaic system in the deployed state described in the embodiments of the present application;

[0023] Figure 2 Another schematic structural diagram of a prefabricated photovoltaic system in the deployed state described in the embodiments of the present application;

[0024] Figure 3 Is Figure 1 An enlarged structural diagram of position A of the prefabricated photovoltaic system described;

[0025] Figure 4 Is Figure 1 An enlarged structural diagram of position B of the prefabricated photovoltaic system described;

[0026] Figure 5 Is Figure 1 A schematic structural diagram of the support unit of the prefabricated photovoltaic system shown;

[0027] Figure 6 Is Figure 5 A schematic structural diagram of the first support in the support unit shown;

[0028] Figure 7 Is Figure 6 A schematic structural diagram of the photovoltaic module installed on the first support shown;

[0029] Figure 8 One of the schematic structural diagrams of a prefabricated photovoltaic system in the folded state described in the embodiments of the present application;

[0030] Figure 9 Another schematic structural diagram of a prefabricated photovoltaic system in the folded state described in the embodiments of the present application;

[0031] Figure 10 Is Figure 9 An enlarged structural diagram of position C of the prefabricated photovoltaic system shown;

[0032] Figure 11 One of the schematic structural diagrams of a prefabricated photovoltaic system in the folded state described in the embodiments of the present application;

[0033] Figure 12 A schematic structural diagram of a cross beam described in the embodiments of the present application;

[0034] Figure 13 A schematic structural diagram of a first hinge in the deployed state described in the embodiments of the present application;

[0035] Figure 14 A schematic structural diagram of a first hinge in the folded state described in the embodiments of the present application;

[0036] Figure 15 is one of the schematic structural diagrams of the first longitudinal beam and the second longitudinal beam of the embodiment of the present application in a folded state;

[0037] Figure 16 is another schematic structural diagram of the first longitudinal beam and the second longitudinal beam of the embodiment of the present application in a folded state;

[0038] Figure 17 is one of the schematic connection diagrams of the cross beam of the embodiment of the present application on the counterweight;

[0039] Figure 18 is another schematic connection diagram of the cross beam of the embodiment of the present application on the counterweight;

[0040] Figure 19 is the third schematic connection diagram of the cross beam of the embodiment of the present application on the counterweight;

[0041] Figure 20 is the schematic structural diagram of another prefabricated photovoltaic system of the embodiment of the present application in a folded state;

[0042] Figure 21 is Figure 20 the enlarged structural schematic diagram of position D of a prefabricated photovoltaic system shown;

[0043] Figure 22 is Figure 20 the structural schematic diagram of the second hinge of a prefabricated photovoltaic system shown in;

[0044] Figure 23 is Figure 10 the structural schematic diagram of the second hinge of a prefabricated photovoltaic system shown in;

[0045] Figure 24 is the layout schematic diagram of a prefabricated photovoltaic system in a container of the embodiment of the present application;

[0046] Figure 25 is Figure 9 the enlarged structural schematic diagram of position E of the prefabricated photovoltaic system shown;

[0047] Reference numerals: 100 - prefabricated photovoltaic system, 1 - support, 10 - cross beam, 101 - toe plate, 1011 - bottom plate, 1012 - upturned plate, 11 - first support, 111 - first longitudinal beam, 112 - first transverse purlin, 12 - second support, 121 - second longitudinal beam, 13 - first hinge, 131 - first part, 132 - second part, 133 - first rotating shaft, 134 - limit plate, 14 - second hinge, 141 - third part, 142 - fourth part, 143 - second rotating shaft, 144 - anti-roll plate, 145 - limit portion, 2 - photovoltaic module, 3 - tensioning mechanism, 4 - counterweight, 40 - embedded part, 41 - fastener, 42 - hoop, 43 - limit groove, 5 - tray. Detailed implementation manners

[0048] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts belong to the scope of protection of this application.

[0049] The terms "first" and "second" in the description and claims of this application may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally means an "or" relationship between the associated objects before and after.

[0050] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is 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 should not be construed as a limitation to the present invention.

[0051] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0052] Referring to Figure 1 , Fig. 1 shows one of the schematic structural diagrams of a prefabricated photovoltaic system according to an embodiment of the present application in an unfolded state. Referring to Figure 2 , Fig. 2 shows another schematic structural diagram of a prefabricated photovoltaic system according to an embodiment of the present application in an unfolded state. Referring to Figure 3 , Fig. 3 shows Figure 1 an enlarged schematic structural diagram of the position A of the prefabricated photovoltaic system described above. Referring to Figure 4 , Fig. 4 shows Figure 1 an enlarged schematic structural diagram of the position B of the prefabricated photovoltaic system described above. Referring to Figure 5 , Fig. 5 shows Figure 1 a schematic structural diagram of the support unit of the prefabricated photovoltaic system shown above. Referring to Figure 6 , Fig. 6 shows Figure 5 a schematic structural diagram of the first support in the support unit shown above. Referring to Figure 7 , Fig. 7 shows Figure 6 a schematic structural diagram of a photovoltaic module installed on the first support shown above. Referring to Figure 8 , Fig. 8 shows one of the schematic structural diagrams of a prefabricated photovoltaic system according to an embodiment of the present application in a folded state. Referring to Figure 9 , Fig. 9 shows another schematic structural diagram of a prefabricated photovoltaic system according to an embodiment of the present application in a folded state. Referring to Figure 10 , Fig. 10 shows Figure 9 an enlarged schematic structural diagram of the position C of the prefabricated photovoltaic system shown above. Referring to Figure 11 , Fig. 11 shows another schematic structural diagram of a prefabricated photovoltaic system according to an embodiment of the present application in a folded state. Referring to Figure 12 , Fig. 12 shows a schematic structural diagram of a cross beam according to an embodiment of the present application. Referring to Figure 13 , Fig. 13 shows a schematic structural diagram of a first hinge in an unfolded state according to an embodiment of the present application. Referring to Figure 14 , Fig. 14 shows a schematic structural diagram of a first hinge in a folded state according to an embodiment of the present application. Referring to Figure 15 , Fig. 15 shows one of the schematic structural diagrams of the first longitudinal beam and the second longitudinal beam in a folded state according to an embodiment of the present application. Referring to Figure 16, showing the second schematic structural diagram of the first longitudinal beam and the second longitudinal beam of the embodiment of the present application in a folded state. Refer to Figure 17 , showing the first schematic connection diagram of the cross beam of the embodiment of the present application on the counterweight. Refer to Figure 18 , showing the second schematic connection diagram of the cross beam of the embodiment of the present application on the counterweight. Refer to Figure 19 , showing the third schematic connection diagram of the cross beam of the embodiment of the present application on the counterweight. Refer to Figure 20 , showing the schematic structural diagram of another prefabricated photovoltaic system of the embodiment of the present application in a folded state. Refer to Figure 21 , showing Figure 20 The enlarged schematic structural diagram of the D position of a prefabricated photovoltaic system shown in Figure 22 , showing Figure 20 The schematic structural diagram of the second hinge in a prefabricated photovoltaic system shown in Figure 23 , showing Figure 10 The schematic structural diagram of the second hinge in a prefabricated photovoltaic system shown in Figure 24 , showing the schematic layout diagram of the prefabricated photovoltaic system in a container in the embodiment of the present application. Refer to Figure 25 , showing Figure 9 The enlarged schematic structural diagram of the E position of the prefabricated photovoltaic system shown in

[0053] Specifically, the prefabricated photovoltaic system may specifically include: a photovoltaic bracket 1, which can be unfolded and folded; a photovoltaic module 2, which is fixed on the photovoltaic bracket 1; and a tensioning mechanism 3, which is connected to the photovoltaic bracket 1 and can be used to limit the unfolding angle of the photovoltaic bracket 1.

[0054] In the embodiment of the present application, the photovoltaic module 2 can be installed on the photovoltaic bracket 1 before the prefabricated photovoltaic system leaves the factory. Then, through the folding of the photovoltaic bracket 1, the whole prefabricated photovoltaic system is folded, so that the overall volume of the prefabricated photovoltaic system is small, which is convenient for the transportation of the prefabricated photovoltaic system. After transporting the prefabricated photovoltaic system to the installation site, only the photovoltaic bracket 1 needs to be installed on the counterweight 4 or the ground at the installation site to unfold the prefabricated photovoltaic system. Under the tensioning force of the tensioning mechanism 3, the prefabricated photovoltaic system can be reliably maintained at the required unfolding angle to improve the structural stability of the prefabricated photovoltaic system. In this way, the prefabricated photovoltaic system described in the embodiment of the present application is not only convenient for transportation, but also can greatly shorten the on-site construction time, simplify the manual operation process, and greatly improve the on-site installation efficiency.

[0055] In a specific application, during the transportation of the pre-installed photovoltaic system, the tensioning mechanism 3 can be stored together with the photovoltaic bracket 1 in a folded state, or can be stored separately, which is not limited in the embodiment of the present application.

[0056] Specifically, after the preinstalled photovoltaic system is installed at the installation site, the folded photovoltaic bracket 1 can be unfolded in sequence. During the unfolding process, the tensioning mechanism 3 installed on the photovoltaic bracket 1 slowly extends as the photovoltaic bracket 1 unfolds. When the photovoltaic bracket 1 is unfolded to a preset angle, the tensioning mechanism 3 has been fully unfolded. At the same time, a tensioning force in the opposite direction is applied to the photovoltaic bracket 1 that continues to unfold, preventing the photovoltaic bracket 1 from continuing to unfold, so that the photovoltaic bracket 1 can be maintained at the preset angle, thereby preventing the photovoltaic bracket 1 from further sinking under the gravity of the photovoltaic component 2.

[0057] like Figure 1 As shown, the photovoltaic bracket 1 specifically includes a first direction ( Figure 1 A plurality of beams 10 are arranged at intervals (in the direction indicated by the arrow in the middle), and a beam 10 is arranged between two adjacent beams 10. Figure 5 The bracket unit shown. Figure 5 As shown, the bracket unit is hinged to two adjacent beams 10 respectively, so that the photovoltaic bracket 1 can switch between the unfolded state and the folded state.

[0058] In practical applications, the photovoltaic assembly 2 can be first fixedly mounted on the bracket unit. Then, the plurality of beams 10 spaced apart along the first direction can be brought together to achieve the folding of the photovoltaic system. After arriving at the installation site, the photovoltaic bracket 1 can be unfolded by expanding the distance between the beams 10.

[0059] Specifically, the number of the bracket units can be set according to actual needs. For example, the number of the bracket units can be 1, 2, 3, 4, 5 or 6, etc., and the embodiment of the present application does not specifically limit the number of the bracket units.

[0060] like Figure 5 As shown, the bracket unit includes a first bracket 11 and a second bracket 12 arranged along the first direction, the first bracket 11 and the second bracket 12 both include a first end and a second end, the first end of the first bracket 11 and the first end of the second bracket 12 are hinged, and the second end of the first bracket 11 and the second end of the second bracket 12 are respectively hinged to two adjacent crossbeams 10; at least one photovoltaic module 2 is connected to each of the first bracket 11 and the second bracket 12. By hinged connection between the first end of the first bracket 11 and the first end of the second bracket 12, and hinged connection between the second end of the first bracket 11, the second end of the second bracket 12 and the crossbeam 10, the entire photovoltaic bracket 1 can be switched between the folded state and the unfolded state.

[0061] In practical applications, the number of photovoltaic modules 2 is multiple, and at least one photovoltaic module 2 is connected to each of the first bracket 11 and the second bracket 12. In the drawings of the embodiments of the present application, only the structural schematic diagrams of 2 photovoltaic modules 2 are installed on each of the first bracket 11 and the second bracket 12 are shown. In practical applications, those skilled in the art can set the number of photovoltaic modules 2 on the first bracket 11 and the second bracket 12 according to actual needs. For example, the number of photovoltaic modules 2 on the first bracket 11 and the second bracket 12 can be 1, 3, 5, etc., and the embodiments of the present application do not limit this.

[0062] As Figure 3 shown, the bracket unit may further include a first hinge 13, and the first hinge 13 is connected between the first end of the first bracket 11 and the first end of the second bracket 12 to realize the hinge between the first bracket 11 and the second bracket 12. The bracket unit may further include a second hinge 14, and the second hinge 14 is connected between the second end of the first bracket 11, the second end of the second bracket 12 and the cross beam 10 to realize the hinge between the first bracket 11, the second bracket 12 and the cross beam 10.

[0063] Specific to the installation site, the first direction may be the east-west direction. After the photovoltaic bracket 1 is unfolded, in order to make the power generation of the photovoltaic module 2 higher, a certain angle needs to be maintained between the photovoltaic module 2 and the horizontal plane of the installation site. Correspondingly, an appropriate angle also needs to be maintained between the first bracket 11 and the second bracket 12.

[0064] Exemplarily, after the photovoltaic bracket 1 is unfolded to the target angle, the angle between the photovoltaic module 2 on the photovoltaic bracket 1 and the installation surface of the installation site can be any one of 5 degrees to 30 degrees. For example, the above angle can be 5 degrees, 10 degrees, 20 degrees or 30 degrees, etc. Correspondingly, in the same bracket unit of the photovoltaic bracket 1, the angle between the first bracket 11 and the second bracket 12 can be any one of 120 degrees to 170 degrees. For example, 120 degrees, 140 degrees, 160 degrees and 170 degrees, etc.

[0065] It should be noted that in specific applications, the above angles can be reasonably selected according to the geographical location of the installation site (such as longitude and latitude, etc.), the climate environment (such as wind load resistance, etc.) and the power generation efficiency of the photovoltaic module 2.

[0066] In an alternative embodiment of the present application, the tensioning mechanism 3 may be disposed between the first bracket 11 and the second bracket 12 in the bracket unit. The tensioning mechanism 3 is respectively connected to the first bracket 11 and the second bracket 12. After the photovoltaic bracket 1 is unfolded, the included angle between the first bracket 11, the second bracket 12 and the tensioning mechanism 3 may be 5° to 30°, so that the power generation of the photovoltaic modules 2 on the first bracket 11 and the second bracket 12 is relatively high.

[0067] For example, the included angle between the first bracket 11, the second bracket 12 and the tensioning mechanism 3 may be 5°, 10°, 18°, 25°, 30°, etc. The embodiments of the present application do not make specific limitations thereto.

[0068] Optionally, the tensioning mechanism 3 may be any one of a steel wire rope, a rigid pull rod, a telescopic rod, and a folding rod. The embodiments of the present application do not make specific limitations to the tensioning mechanism 3.

[0069] Optionally, the tensioning mechanism 3 may be connected to the first bracket 11 and the second bracket 12. For example, it may be connected to the first longitudinal beam 111 of the first bracket 11 and the second longitudinal beam 121 of the second bracket 12. Alternatively, the tensioning mechanism 3 may also be connected to the second hinge member 14 where the first bracket 11 and the second bracket 12 are connected to the cross beam 10, so as to move together with the second hinge member 14 to achieve tensioning in the unfolded state. Alternatively, the tensioning mechanism 3 may also be connected to the purlins of the first bracket 11 and the second bracket 12.

[0070] In some alternative embodiments of the present application, the tensioning mechanism 3 may be connected to the longitudinal beam. The connection position of the tensioning mechanism 3 and the longitudinal beam is the target position. The distance between the target position and the cross beam is the target distance. The ratio of the target distance to the total length of the longitudinal beam is 0 - 2 / 3, so as to further improve the tensioning effect of the tensioning mechanism on the photovoltaic bracket 1, and thus the photovoltaic bracket 1 can be better maintained at the required unfolded angle.

[0071] For example, when the tensioning mechanism 3 is a rigid rod, the rigid rod may include two rotatably connected parts. Among them, one part is connected to the second hinge member 14 where the first bracket 11 is connected to the cross beam 10, and the other part is connected to the second hinge member 14 where the second bracket 12 is connected to the cross beam 10.

[0072] In some alternative embodiments of the present application, a plurality of limiting plates 134 arranged along the first direction are further provided on the photovoltaic bracket. When the photovoltaic bracket 1 is unfolded to a preset angle, adjacent limiting plates 134 abut against each other to prevent the photovoltaic bracket 1 from continuing to unfold, so that the photovoltaic bracket 1 can be maintained at the required unfolded angle, thereby improving the unfolding stability of the prefabricated photovoltaic system.

[0073] Such as Figure 3As shown, the first hinge 13 can be a hinge, and the hinge can include a first rotating shaft 133, and a first part 131 and a second part 132 sleeved on the first rotating shaft 133. The first part 131 is connected to the first end of the first bracket 11 through fasteners such as bolts or screws, and the second part 132 is connected to the first end of the second bracket 12 through fasteners such as bolts or screws.

[0074] As Figure 13 、 Figure 14 shown, limiting plates 134 are provided on both the first part and the second part. As Figure 14 and Figure 25 shown, when the photovoltaic bracket 1 is folded, the adjacent limiting plates 134 of the adjacent bracket units abut against each other. As Figure 13 and Figure 3 shown, when the photovoltaic bracket 1 is unfolded, the limiting plate 134 on the first part 131 abuts against the limiting plate 134 on the second part 132 to prevent the photovoltaic bracket 1 from further unfolding.

[0075] In Figure 15 the shown folded state, the adjacent limiting plates 134 of the adjacent bracket units abut against each other to avoid collision of the photovoltaic modules 2 on the two bracket units and improve the transportation safety of the assembled photovoltaic system. As Figure 13 shown in the unfolded state, in the same first hinge 13, the limiting plate 134 on the first part 131 and the limiting plate 134 on the second part 132 tend to abut against each other to prevent the photovoltaic bracket from further unfolding and avoid poor installation caused by the continuous downward pressure of the first bracket 11 and the second bracket 12 under the gravity of the photovoltaic module 2. In particular, when the tensioning mechanism 3 below fails, the upper limiting plate 134 can continue to ensure that the photovoltaic bracket is at a preset unfolded angle.

[0076] As Figure 13 、 Figure 14 shown, the limiting plate 134 can specifically include an extension plate 1341 and a bending plate 1342. One end of the extension plate 1341 is connected to the first part 131 or the second part 132, and the bending plate 1342 is arranged at the other end of the extension plate 1341; wherein, in the same hinge, the bending plates 1342 on the first part 131 and the second part 132 are arranged oppositely. In this way, when the photovoltaic bracket 1 is folded, the bending plates 1342 on the adjacent limiting plates 134 of the adjacent bracket units can abut against each other. When the photovoltaic bracket 1 is unfolded, in the same hinge, the bending plate 1342 on the first part 131 and the bending plate on the second part can abut against each other to prevent the photovoltaic bracket 1 from further unfolding.

[0077] As Figure 10As shown, a toe board 101 may be provided at the bottom of the cross beam 10. When the photovoltaic support 1 is unfolded, the toe board 101 can also be used to prevent the cross beam 10 from flipping, avoid the cross beam 10 from rolling on the installation platform or on the counterweight, and improve the assembly efficiency of the prefabricated photovoltaic system. When the photovoltaic support 1 is in the folded state, the toe boards 101 of two adjacent cross beams 10 can abut against each other to avoid collision of adjacent components and improve the transportation safety of the prefabricated photovoltaic system.

[0078] As Figure 10 shown, the toe board 101 may include a bottom plate 1011 extending along the first direction and upturned plates 1012 provided at both ends of the bottom plate 1011; the bottom plate 1011 is connected to the bottom of the cross beam 10, and the upturned plates 1012 extend away from the bottom plate, and the extending direction of the upturned plates 1012 has an included angle with the plane where the bottom plate 1011 is located, and the included angle ranges from 0 to 90 degrees.

[0079] In a specific application, the width of the bottom plate 1011 along the first direction may be greater than the width of the cross beam 10 along the first direction. Since the bottom plate 1011 is connected to the bottom of the cross beam 10, when the photovoltaic support 1 is in the unfolded state, the bottom plate 1011 can increase the contact area between the cross beam 10 and the installation platform or the counterweight, and thus can prevent the cross beam 10 from flipping. When the photovoltaic support 1 is in the folded state, the upturned plates 1012 on the toe boards 101 at the bottoms of two adjacent cross beams 10 can abut against each other to avoid collision of adjacent components and improve the transportation safety of the prefabricated photovoltaic system.

[0080] As Figure 4 shown, the second hinge 14 may also be a hinge, and the hinge may include a second rotating shaft 143 and a third part 141 and a fourth part 142 sleeved on the second rotating shaft 143. Among them, the third part 141 is connected to the second end of the first support 11 or the second end of the second support 12 through fasteners such as bolts or screws, and the fourth part 142 is connected to the cross beam 10 through fasteners such as bolts or screws.

[0081] As Figure 10 、 Figure 23 shown, the third part 141 is provided with an anti-rollover plate 144 extending outwards. When the support 1 is in the folded state, the anti-rollover plate 144 is located between the first support 11, the second support 12 and the cross beam 10. Once the assembled photovoltaic system has a tendency to roll over, the anti-rollover plate 144 can abut against the cross beam 10 to avoid the continuous rollover of the assembled photovoltaic system, achieve the purpose of anti-rollover, and improve the transportation safety of the assembled photovoltaic system.

[0082] Or, as Figures 20 to 22As shown, at least one of the third part 141 and the fourth part 142 of the second hinge 14 is provided with a limiting part 145. When the photovoltaic bracket 1 is folded, the third part 141 and the fourth part 142 abut against each other through the limiting part 145 to prevent the assembled photovoltaic system from tipping over.

[0083] Specifically, the limiting part 145 can be Figure 22 as shown, a stepped avoidance structure, or a concave-convex matching structure, etc. The specific structure of the limiting part 145 in the embodiments of the present application may not be limited.

[0084] In some alternative embodiments of the present application, both the first bracket 11 and the second bracket 12 may include at least two longitudinal beams and at least two transverse purlins. The longitudinal beams and the transverse purlins are vertically or cross-connected to form a grid frame, and the photovoltaic module 2 is fixed on the grid frame to achieve stable connection of the photovoltaic module 2 on the first bracket 11 and the second bracket 12.

[0085] As Figure 6 shown, the longitudinal beam on the first bracket 11 is the first longitudinal beam 111, and the transverse purlin on the first bracket 11 is the first transverse purlin 112. The first transverse purlin 112 is connected to the first longitudinal beam 111 through fasteners.

[0086] Exemplarily, as Figure 7 shown, the number of the first longitudinal beams 111 is two, and the number of the first transverse purlins 112 between the two first longitudinal beams 111 is three. The first transverse purlin 112 can be connected to the first longitudinal beam 111 through fasteners such as bolts and screws. The first bracket 11 can be used to install two photovoltaic modules 2, and the frame of each photovoltaic module 2 can be connected to two adjacent first transverse purlins 112 through fasteners.

[0087] Similarly, the longitudinal beam on the second bracket 12 can be the second longitudinal beam 121, and the transverse purlin on the second bracket 12 is the second transverse purlin. The second transverse purlin is connected to the second longitudinal beam 121 through fasteners. The specific structure on the second bracket 12 can refer to Figure 6 the first bracket 11 shown, and will not be elaborated here.

[0088] It should be noted that in actual applications, in addition to the longitudinal beams and transverse purlins on the first bracket 11 and the second bracket 12, other support beams can also be provided between the longitudinal beams and the transverse purlins, and the support beams can also be inclined relative to the longitudinal beams and the transverse purlins.

[0089] Optionally, the first longitudinal beam 111 on the first bracket 11 and the second longitudinal beam 121 on the second bracket 12 can be made of angle steel, rectangular tubes or C-shaped tubes, etc. The materials of the above-mentioned rectangular tubes or C-shaped tubes can include but are not limited to steel, aluminum alloy, composite materials, etc. The specific structures of the first longitudinal beam 111 and the second longitudinal beam 121 in the embodiments of the present application may not be limited.

[0090] In some alternative embodiments of the present application, in order to avoid interference between the first longitudinal beam 111 and the second longitudinal beam 121 in the folded state and reduce the volume of the bracket 1 after folding, the first longitudinal beam 111 and the second longitudinal beam 121 can be arranged offset along the first direction.

[0091] In some other alternative embodiments of the present application, as Figure 15 and Figure 16 shown, along the first direction, the first longitudinal beam 111 and the second longitudinal beam 121 are arranged in alignment; at least one of the first longitudinal beam 111 and the second longitudinal beam 121 has an open end, the open end faces away from the photovoltaic module 2, and the width of the longitudinal beam with the open end is greater than the width of the other longitudinal beam. In this way, in the folded state, the longitudinal beam with the open end and the larger width can accommodate the other longitudinal beam to reduce the volume after folding.

[0092] For example, when the first longitudinal beam 111 and the second longitudinal beam 121 are C-shaped tubes with open ends, the width dimension of the first longitudinal beam 111 needs to be less than the width dimension of the second longitudinal beam 121, or the width dimension of the second longitudinal beam 121 needs to be less than the width dimension of the first longitudinal beam 111. In this way, in the folded state, the first longitudinal beam 111 can be integrally embedded in the second longitudinal beam 121, or the second longitudinal beam 121 can be integrally embedded in the first longitudinal beam 111, reducing the overall volume of the photovoltaic bracket 1 after folding.

[0093] Specifically, extension plates are provided on both the first part 131 and the second part 132 of the first hinge 13. The extension plates can extend into the first longitudinal beam 111 or the second longitudinal beam 121 and are connected to the first longitudinal beam 111 or the second longitudinal beam 121 through fasteners.

[0094] In some alternative embodiments of the present application, the cross beam 10 can be directly connected to the installation platform; among them, the cross beam 10 can be directly installed on the installation platform through fasteners; or, embedded parts can be provided in the installation platform, and the cross beam 10 is connected to the embedded parts through fasteners; or, the prefabricated photovoltaic system can further include a hoop, the hoop bypasses the cross beam 10 and is connected to the installation platform through fasteners. The embodiments of the present application do not specifically limit the connection method of the cross beam 10 on the installation platform.

[0095] In a specific application, directly installing the crossbeam 10 on the installation platform can not only flexibly set the position of the crossbeam 10, but also make the structure of the prefabricated photovoltaic system relatively simple.

[0096] As Figure 1 shown, the prefabricated photovoltaic system may further include: a plurality of counterweights 4, which are arranged at intervals in the first direction on the installation plane. When the photovoltaic bracket 1 is in the unfolded state, both ends of a crossbeam 10 can be respectively installed on a counterweight 4 through fasteners such as screws and bolts. Specifically, the counterweight 4 can be a concrete foundation formed by concrete pouring, and the counterweight 4 can be used to fixedly support the entire prefabricated photovoltaic system.

[0097] As Figure 17 shown, the crossbeam 10 can be directly installed on the counterweight 4 through the fastener 41. Figure 17 The fastener 41 shown can specifically be an expansion screw or the like.

[0098] As Figure 18 shown, an embedded part 40 is arranged in the counterweight 4, and the crossbeam 10 is connected to the embedded part 40 through the fastener 41. When the embedded part 40 is provided, the fastener 41 can be an ordinary bolt, screw or the like.

[0099] Optionally, as Figure 18 shown, the prefabricated photovoltaic system may further include a hoop 42, and the hoop can bypass the crossbeam 10 and be connected to the embedded part 40 through the fastener 41. Since the contact area between the hoop 42 and the crossbeam 10 is relatively large, connecting the crossbeam to the counterweight 4 through the hoop 42 can further increase the connection reliability of the crossbeam 10 on the counterweight 4.

[0100] As Figure 18 shown, the hoop 42 can be installed from the top of the counterweight 4. As Figure 19 shown, the hoop 42 can be installed from the side of the counterweight 4. In practical applications, those skilled in the art can select a suitable installation method according to needs, and the embodiments of the present application do not make special limitations thereto.

[0101] Optionally, the counterweight 4 can be arranged below the crossbeam 10. Along the first direction, among the counterweights 4 at both ends of the prefabricated photovoltaic system (as Figures 17 to 19 shown,), at least one end of the counterweight 4 is provided with a limiting groove 43 for limiting the crossbeam 10. In practical applications, the limiting groove 43 can be provided only on one of the counterweights 4 at both ends along the first direction, or the limiting groove 43 can be provided on both ends of the counterweight 4 at the same time to realize the limitation of the crossbeam 10 along the first direction and improve the installation efficiency of the prefabricated photovoltaic module at the installation site.

[0102] In the embodiments of the present application, in order to facilitate the transportation of the prefabricated photovoltaic system, it is necessary to control the size of the prefabricated photovoltaic system after folding so that the size of the prefabricated photovoltaic system after folding can match the size of the container. For example, the prefabricated photovoltaic system described in the embodiments of the present application can be transported using a 40-foot high-cube container door (width 2340 mm × height 2585 mm × length 12055 mm). Correspondingly, after the folded prefabricated photovoltaic system is placed on the pallet 5, the depth dimension L can be 2400 ± 20 mm, the width dimension W can be 1130 ± 20 mm, and the height dimension H can be 2510 ± 20 mm. The matching relationship between the container size and the size of the folded prefabricated photovoltaic system needs to be aligned one by one, and the width, depth, and height of the size of the folded prefabricated photovoltaic system correspond to the width, depth, and height of the container.

[0103] As Figure 24 shown, 10 prefabricated photovoltaic systems 100 can be placed in a 40-foot high-cube container door. Among them, along the length L1 direction of the container, 5 rows of prefabricated photovoltaic systems 100 can be placed, and along the width W1 direction of the container, 2 columns of prefabricated photovoltaic systems 100 can be placed. Since the size of the length LI of the container is 12055 mm, after leaving a reasonable layout gap, the sum of the depths of 5 rows of prefabricated photovoltaic systems 100 with a depth dimension L of 2400 ± 20 mm basically corresponds to the length dimension of the container. Since the size of the width W1 of the container is 2340 mm, after leaving a reasonable layout gap, the sum of the widths of 2 columns of prefabricated photovoltaic systems 100 with a width dimension W of 1130 ± 20 mm basically corresponds to the width dimension of the container.

[0104] In summary, the prefabricated photovoltaic system described in the embodiments of the present application has at least the following advantages:

[0105] In the embodiments of the present application, the photovoltaic modules can be installed on the photovoltaic brackets before the prefabricated photovoltaic system leaves the factory. Then, through the folding of the photovoltaic brackets, the prefabricated photovoltaic system is integrally folded so that the overall volume of the prefabricated photovoltaic system is small, facilitating the transportation of the prefabricated photovoltaic system. After transporting the prefabricated photovoltaic system to the installation site, it is only necessary to install the photovoltaic brackets on the installation platform at the installation site to deploy the prefabricated photovoltaic system. The tensioning mechanism can be used to limit the deployment angle of the photovoltaic brackets to improve the structural stability of the prefabricated photovoltaic system. In this way, the prefabricated photovoltaic system described in the embodiments of the present application is not only convenient for transportation, but also can greatly shorten the on-site construction time, simplify the manual operation process, and greatly improve the on-site installation efficiency.

[0106] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0107] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A prefabricated photovoltaic system, characterized in that, The prefabricated photovoltaic system specifically includes: A photovoltaic support, which can be deployed and folded; the photovoltaic support includes a plurality of cross beams arranged at intervals in a first direction, and a support unit is arranged between two adjacent cross beams, and the support unit is respectively hinged to the two adjacent cross beams; a toe plate is arranged at the bottom of the cross beam. When the photovoltaic support is deployed, the toe plate is used to prevent the cross beam from flipping, and when the photovoltaic support is folded, two adjacent toe plates abut against each other; Photovoltaic modules, which are fixed to the photovoltaic support; And a tensioning mechanism, which is connected to the photovoltaic support and is used to limit the deployment angle of the photovoltaic support.

2. The prefabricated photovoltaic system according to claim 1, wherein A plurality of limiting plates arranged in the first direction are further arranged on the photovoltaic support. When the photovoltaic support is deployed to a preset angle, adjacent limiting plates abut against each other to prevent the photovoltaic support from continuing to deploy.

3. The prefabricated photovoltaic system according to claim 1, characterized in that The toe plate includes a bottom plate extending in the first direction and upturned plates arranged at both ends of the bottom plate; The bottom plate is connected to the bottom of the cross beam, the upturned plate extends in a direction away from the bottom plate, and the extension direction of the upturned plate forms an angle with the plane where the bottom plate is located, and the value range of the angle is 0-90 degrees.

4. The prefabricated photovoltaic system according to claim 1, characterized in that, The support unit includes a first support and a second support arranged in the first direction. Both the first support and the second support include a first end and a second end. The first end of the first support is hinged to the first end of the second support, and the second end of the first support and the second end of the second support are respectively hinged to two adjacent cross beams; At least one photovoltaic module is connected to each of the first support and the second support.

5. The prefabricated photovoltaic system according to claim 4, wherein The support unit further includes a first hinge, and the first hinge is connected between the first end of the first support and the first end of the second support to realize the hinge between the first support and the second support; The support unit further includes a second hinge, and the second hinge is connected between the second end of the first support, the second end of the second support and the cross beam.

6. The prefabricated photovoltaic system according to claim 5, wherein The first hinge is a hinge, and the hinge includes a first rotating shaft and a first part and a second part sleeved on the first rotating shaft. The first part is connected to the first end of the first support, and the second part is connected to the first end of the second support; Limiting plates are arranged on both the first part and the second part. When the photovoltaic support is folded, adjacent limiting plates of adjacent support units abut against each other. When the photovoltaic support is deployed, the limiting plate on the first part abuts against the limiting plate on the second part to prevent the photovoltaic support from continuing to deploy.

7. The prefabricated photovoltaic system according to claim 6, characterized in that, The limiting plate includes an extension plate and a bent plate. One end of the extension plate is connected to the first part or the second part, and the bent plate is arranged at the other end of the extension plate; wherein, In the same hinge, the bent plates on the first part and the second part are arranged oppositely.

8. The prefabricated photovoltaic system according to claim 5, characterized in that, The second hinge is a hinge, which includes a second rotating shaft, and a third part and a fourth part sleeved on the second rotating shaft. The third part is connected to the second end of the first bracket or the second end of the second bracket, and the fourth part is connected to the cross beam; The third part is provided with a rollover prevention plate extending outwards. When the photovoltaic bracket is folded, the rollover prevention plate is located between the first bracket, the second bracket and the cross beam. Alternatively, at least one of the third part and the fourth part is provided with a limiting part. When the photovoltaic bracket is folded, the third part and the fourth part are in mutual abutment through the limiting part.

9. The prefabricated photovoltaic system according to claim 4, wherein Both the first bracket and the second bracket include at least two longitudinal beams and at least two transverse purlins. The longitudinal beams and the transverse purlins are vertically or cross-connected to form a grid frame, and the photovoltaic module is fixed on the grid frame.

10. The prefabricated photovoltaic system according to claim 9, characterized in that, The longitudinal beam of the first bracket is the first longitudinal beam, and the longitudinal beam of the second bracket is the second longitudinal beam. At least one of the first longitudinal beam and the second longitudinal beam has an opening facing away from the side of the photovoltaic module, and the width of the longitudinal beam with the opening is greater than the width of the other longitudinal beam.

11. The prefabricated photovoltaic system according to claim 9, characterized in that, The positions of the longitudinal beams of the first bracket and the second bracket are arranged in a staggered manner.

12. The prefabricated photovoltaic system according to claim 9, wherein The tensioning mechanism is connected to the longitudinal beam. The connection position of the tensioning mechanism and the longitudinal beam is the target position. The distance between the target position and the cross beam is the target distance. The ratio of the target distance to the total length of the longitudinal beam is: 0-2 / 3.

13. The prefabricated photovoltaic system according to claim 4, wherein the tensioning mechanism is arranged between the first bracket and the second bracket in the bracket unit, and the tensioning mechanism is respectively connected to the first bracket and the second bracket. After the photovoltaic bracket is unfolded, the included angles between the first bracket, the second bracket and the tensioning mechanism are 5° to 30°.

14. The prefabricated photovoltaic system according to claim 1, wherein The cross beam is connected to the installation platform; wherein, The cross beam is directly installed on the installation platform through fasteners; Alternatively, embedded parts are provided in the installation platform, and the cross beam is connected to the embedded parts through the fasteners; Alternatively, the prefabricated photovoltaic system further includes a hoop, and the hoop bypasses the cross beam and is connected to the installation platform through the fasteners.

15. The prefabricated photovoltaic system according to claim 1, characterized in that, Counterweights are further arranged at both ends of the cross beam. The cross beam is connected to the counterweights, and the counterweights are connected to the installation platform; wherein, The cross beam is directly installed on the counterweights through fasteners; Alternatively, embedded parts are provided in the counterweights, and the cross beam is connected to the embedded parts through the fasteners; Alternatively, the prefabricated photovoltaic system further includes a hoop, and the hoop bypasses the cross beam and is connected to the counterweights through the fasteners.

16. The prefabricated photovoltaic system according to claim 1, characterized in that, The cross beam is further provided with counterweights. Along the first direction, among the counterweights at both ends of the prefabricated photovoltaic system, at least one end of the counterweights is provided with a limiting groove for limiting the cross beam.

17. The prefabricated photovoltaic system according to claim 1, wherein The tensioning mechanism is at least one of a steel wire rope, a rigid pull rod, a telescopic rod and a folding rod.

18. The prefabricated photovoltaic system according to claim 1, characterized in that, When the photovoltaic support is folded, the size of the prefabricated photovoltaic system after folding is adapted to the container.

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