Photovoltaic grid and photovoltaic system

Abstract

The utility model discloses a photovoltaic net rack and a photovoltaic system, the photovoltaic net rack comprises a net rack body, the net rack body comprises a plurality of rod pieces and a plurality of node connecting pieces, the node connecting pieces are detachably connected with the rod pieces, and the node connecting pieces are connected with at least two rod pieces; the joint connecting piece comprises a shell, a sleeve and a fixing framework, the rod piece is made of a first composite material, and the shell is made of a second composite material; the first composite material and the second composite material are any one of a whisker composite material, a basalt fiber composite material, a carbon fiber composite material and a glass fiber composite material. In the embodiment of the utility model, the net rack body in the photovoltaic net rack is made of the composite material, the composite material is good in corrosion resistance and salt spray resistance, and the photovoltaic net rack made of the composite material can realize full life cycle service after being installed on an offshore scene, and does not need to be periodically subjected to corrosion prevention and maintenance, so that the corrosion prevention and maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaics, in particular to a photovoltaic grid and a photovoltaic system. Background Art

[0002] When photovoltaic modules are used in offshore applications, the photovoltaic grid is typically constructed using steel trusses and steel grids. To withstand the harsh offshore environment, the grid also requires additional anti-corrosion treatment.

[0003] However, existing photovoltaic grids have poor corrosion resistance. Due to the complex and harsh offshore environment, photovoltaic grids must withstand adverse factors such as wind, waves, and salt spray, making them susceptible to short-term corrosion. Therefore, regular anti-corrosion maintenance is required, which is costly. Utility Model Content

[0004] The utility model provides a photovoltaic grid and a photovoltaic system, aiming to at least solve the technical problem of poor corrosion resistance of the photovoltaic grid in the prior art.

[0005] In a first aspect, an embodiment of the present invention provides a photovoltaic grid, comprising a grid body, wherein the grid body comprises a plurality of rods and a plurality of node connectors, wherein the node connectors are detachably connected to the rods, and the node connectors connect at least two of the rods;

[0006] The node connection member includes a shell, the rod member is made of a first composite material, and the shell is made of a second composite material;

[0007] The first composite material is any one of a whisker composite material, a basalt fiber composite material, a carbon fiber composite material, and a glass fiber composite material; the second composite material is any one of a whisker composite material, a basalt fiber composite material, a carbon fiber composite material, and a glass fiber composite material.

[0008] In the embodiment of the present invention, the grid body of the photovoltaic grid is made of composite material, and the composite material is any one of whisker composite material, basalt fiber composite material, carbon fiber composite material, and glass fiber composite material. The composite material has good corrosion resistance and salt spray resistance. The photovoltaic grid using this composite material can be installed in an offshore scene for the entire life cycle, without the need for regular anti-corrosion maintenance, thereby reducing the cost of anti-corrosion and maintenance, thereby reducing the cost of photovoltaic power stations and improving the economic efficiency of photovoltaic power stations. In addition, the grid body can be installed by pre-assembling in advance and then hoisting the whole body, reducing the workload of offshore construction. In addition, the composite material has a high specific modulus and specific strength. The grid body using this composite material has a strong overall quality after prefabrication and assembly, which is convenient for hoisting and installation, thereby improving construction efficiency.

[0009] Optionally, the node connector further includes at least two sleeves connected to the rods, threaded holes are provided on the sleeves, and the sleeves are embedded in the shell.

[0010] When the sleeve is embedded in the shell, the shell can protect the sleeve and prevent the sleeve from being corroded.

[0011] Optionally, at least two of the sleeves are connected via a fixed frame, and the fixed frame is located inside the shell.

[0012] The fixed frame allows multiple sleeves to be connected together, thereby fixing the sleeves' positions and preventing them from shifting. Furthermore, the fixed frame allows multiple sleeves to be connected together, thereby ensuring a connection between the rods connected to the node connectors, thereby improving the stability of the grid structure.

[0013] Optionally, the shell has an inner cavity, and the sleeve extends into the inner cavity.

[0014] By extending the sleeve into the inner cavity, the length of the sleeve is increased, thereby increasing the connection length and ensuring the connection performance.

[0015] Optionally, the housing is provided with at least two through holes, and the outer wall of the sleeve matches the through holes;

[0016] The sleeve comprises an outer end surface close to the outer surface of the shell, and the outer end surface of the sleeve is lower than or flush with the outer surface of the shell.

[0017] By arranging the outer end surface of the sleeve to be lower than or flush with the outer surface of the shell, the sleeve is prevented from protruding out of the shell, and the sleeve can be prevented from being corroded after the rod is connected to the node connector.

[0018] Optionally, the sleeve and the fixing frame are both made of metal or alloy materials.

[0019] Metal or alloy materials have high strength. When the sleeve and the fixed frame are made of metal or alloy materials, the connection strength with the rod can be guaranteed.

[0020] Optionally, the fixed skeleton includes a plurality of fixed rods, and each of the sleeves is connected to at least one of the fixed rods.

[0021] By arranging that each sleeve is connected to at least one fixing rod, the fixing effect of the sleeve is ensured.

[0022] Optionally, the rod is connected to the sleeve via a connecting component, wherein the connecting component includes a cylinder and a screw, and the screw is screwed to the threaded hole;

[0023] The barrel has a matching hole matching with the screw rod, and the barrel includes a limiting portion, which is located on a side of the matching hole away from the sleeve, and is used to limit the screw rod along the axial direction of the screw rod.

[0024] The connection between the rod and the node connector can be achieved through the connecting component; the position of the screw along its axial direction can be limited by the setting of the limiting part, so that after the screw is installed, the screw has sufficient exposed length to connect with the threaded hole.

[0025] Optionally, the rod has a hollow cavity, the cylinder includes a matching portion, the matching portion extends into the hollow cavity, and the rod is connected to the matching portion via a fastener;

[0026] The cylinder also includes a stopper connected to the matching portion, and the stopper is used to contact the end surface of the rod.

[0027] Optionally, it further comprises at least one supporting structure connected to the bottom of the grid body, wherein the material of the supporting structure is any one of whisker composite material, basalt fiber composite material, carbon fiber composite material and glass fiber composite material.

[0028] The supporting structure has good corrosion resistance and salt spray resistance. The supporting structure using this composite material can serve its entire life cycle after installation in an offshore scene, without the need for regular anti-corrosion maintenance, thereby reducing anti-corrosion and maintenance costs, and thus reducing the cost of photovoltaic power stations.

[0029] Optionally, the support structure includes a support, and the support is detachably connected to the node connector.

[0030] In a second aspect, an embodiment of the present invention provides a photovoltaic system, comprising any one of the photovoltaic grids described above and photovoltaic components installed on the photovoltaic grid.

[0031] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram of the front structure of a photovoltaic grid provided by an embodiment of the present utility model;

[0033] Figure 2 A schematic diagram of the three-dimensional structure of a photovoltaic grid provided in an embodiment of the present utility model;

[0034] Figure 3A schematic diagram of the three-dimensional structure of a node connector provided in an embodiment of the present utility model;

[0035] Figure 4 A schematic cross-sectional view of a node connector provided in an embodiment of the present invention;

[0036] Figure 5 A schematic diagram of the three-dimensional structure of a housing provided in an embodiment of the present utility model;

[0037] Figure 6 A schematic diagram of the top structure of the housing provided in an embodiment of the present utility model;

[0038] Figure 7 A bottom view schematic diagram of the housing provided in an embodiment of the present utility model;

[0039] Figure 8 A schematic diagram of the three-dimensional structure of the fixed frame and the sleeve provided in an embodiment of the utility model;

[0040] Figure 9 A schematic diagram of the front structure of the fixed frame and the sleeve provided in an embodiment of the utility model;

[0041] Figure 10 A schematic diagram of the top view of the fixed frame and sleeve provided in an embodiment of the utility model;

[0042] Figure 11 A schematic diagram of the connection between a node connector and multiple rods provided in an embodiment of the present utility model;

[0043] Figure 12 A schematic structural diagram of a node connector, a connecting member, and a rod member provided in an embodiment of the present utility model;

[0044] Figure 13 A schematic structural diagram of a rod and a connecting component provided in an embodiment of the present utility model;

[0045] Figure 14 A schematic diagram of the connection between the rod and the connecting component provided in an embodiment of the present utility model;

[0046] Figure 15 for Figure 14 Enlarged schematic diagram at point C in the middle;

[0047] Figure 16 A schematic diagram of the three-dimensional structure of the connecting component provided in an embodiment of the present utility model;

[0048] Figure 17 This is a schematic cross-sectional structural diagram of a connecting component provided in an embodiment of the present utility model.

[0049] Reference numerals:

[0050] 1-node connector, 11-shell, 111-inner cavity, 112-through hole, 113-plane, 12-sleeve, 121-threaded hole, 122-outer end face, 123-oblique sleeve, 124-transverse sleeve, 125-vertical sleeve, 13-fixed skeleton, 131-middle fixing rod, 132-edge fixing rod, 2-rod, 21-upper chord, 22-web, 23-lower chord, 24-hollow cavity, 3-support, 4-support rod, 5-support column, 6-support plate, 7-connecting component, 71-cylinder, 711-limiting part, 712-connecting part, 713-matching part, 7131-first mounting hole, 714-stop part, 715-outer ring part, 716-guide surface, 72-screw, 721-external thread, 8-fastener. DETAILED DESCRIPTION

[0051] The following describes exemplary embodiments of the present invention in more detail with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0052] First, refer to Figures 1 to 3 The embodiment of the utility model discloses a photovoltaic grid, including a grid body, the grid body including a plurality of rods 2 and a plurality of node connectors 1, the node connector 1 is detachably connected to the rods 2, and the node connector 1 connects at least two rods 2; the node connector 1 includes a shell 11, the material of the rods 2 is a first composite material, the material of the shell 11 is a second composite material, the first composite material is any one of a whisker composite material, a basalt fiber composite material, a carbon fiber composite material, and a glass fiber composite material, and the second composite material is any one of a whisker composite material, a basalt fiber composite material, a carbon fiber composite material, and a glass fiber composite material.

[0053] This photovoltaic module is particularly useful in offshore applications. The photovoltaic grid also includes at least two purlins arranged on the grid body. The purlins can be connected to the grid body by threaded connections. The purlins are specifically connected to rods 2 in the grid body. Two purlins form a group, and each group of purlins is equipped with multiple photovoltaic modules.

[0054] The grid structure itself has the advantages of low spatial stress, light weight, high rigidity, and good seismic resistance. In addition, the grid structure can be pre-assembled and then hoisted as a whole for installation, reducing the workload of offshore construction.

[0055] Reference Figure 1 and Figure 2The multiple members 2 include multiple upper chords 21, multiple web members 22, and multiple lower chords 23. The multiple upper chords 21 are connected to form an upper structure via multiple node connectors 1, and the multiple lower chords 23 are connected to form a lower structure via multiple node connectors 1. The upper structure is connected to the lower structure via multiple web members 22. The node connectors 1 can be spherical in shape. The shell 11 itself can be a hollow spherical shell.

[0056] The connection between the node connector 1 and the rod 2 can be a threaded connection. Preferably, each node connector 1 is connected to at least three rods 2. The number of rods 2 connected by the node connector 1 is not exactly the same, for example, Figure 1 and Figure 2 , at least one node connection member 1 connects three rods 2, at least one node connection member 1 connects four rods 2, at least one node connection member 1 connects five rods 2, and at least one node connection member 1 connects six rods 2.

[0057] The first composite material may be the same as the second composite material, or may be different from the second composite material. The first composite material is preferably a whisker composite material, and the second composite material is preferably a whisker composite material.

[0058] Currently, photovoltaic grids are typically made of steel, aluminum alloy, and other materials. Hot-dip galvanized steel is often used as a corrosion protection method for steel-based photovoltaic grids. The aforementioned composite materials offer superior performance in all aspects compared to aluminum alloy and hot-dip galvanized steel, and are resistant to corrosion from a variety of acids, alkalis, salts, organic solvents, and peroxides.

[0059] Existing photovoltaic grids have poor corrosion resistance and require regular anti-corrosion maintenance, which results in high anti-corrosion and maintenance costs. In the embodiment of the present invention, the grid body of the photovoltaic grid is made of composite material, and the composite material is any one of whisker composite material, basalt fiber composite material, carbon fiber composite material, and glass fiber composite material. The composite material has good corrosion resistance and salt spray resistance. The photovoltaic grid using this composite material can be installed in an offshore scene and can be used for its entire life cycle without the need for regular anti-corrosion maintenance, thereby reducing anti-corrosion and maintenance costs, and further reducing the cost of photovoltaic power stations and improving the economic efficiency of photovoltaic power stations. In addition, the composite material has a high specific modulus and specific strength. After the grid body using this composite material is prefabricated and assembled, the overall quality is strong, which is convenient for hoisting and installation, thereby improving construction efficiency.

[0060] It should be noted that although the unit price of composite materials is higher than that of steel, the corrosion resistance of composite materials is much higher than that of steel and no additional anti-corrosion measures are required. Steel requires regular anti-corrosion maintenance and the overall economic efficiency is low. When using composite materials, there is no need for regular anti-corrosion maintenance and the overall economic efficiency is high.

[0061] Reference Figure 3 、 Figure 4 、 Figures 8 to 10 The node connector 1 further includes at least two sleeves 12 connected to the rod 2 . The sleeves 12 are provided with threaded holes 121 . The sleeves 12 are embedded in the housing 11 .

[0062] Specifically, the apertures of the threaded holes 121 in at least two sleeves 12 may be the same. The apertures of the threaded holes 121 in at least two sleeves 12 may also be different. The number of sleeves 12 included in the node connector 1 can be set according to actual needs. For example, the number of sleeves 12 included in the node connector 1 can be two to ten. The node connector 1 preferably includes nine sleeves 12. In this case, the node connector 1 can be connected to a maximum of nine rods 2. It should be noted that the multiple sleeves 12 in the node connector 1 can all be connected to the rod 2, or some sleeves 12 can be connected to the rod 2, and some sleeves 12 can not be connected to the rod 2. The thickness of the shell 11 can be set according to actual needs, and is not specifically limited in this embodiment. Refer to Figure 1 The rod 2 is specifically threadedly connected to the sleeve 12 through the connecting member 7. The sleeve 12 can be made of steel. When the sleeve 12 is embedded in the housing 11, the housing 11 can protect the sleeve 12 and prevent the sleeve 12 from being corroded.

[0063] Reference Figure 8 and Figure 9 The plurality of sleeves 12 include a plurality of oblique sleeves 123, a plurality of transverse sleeves 124 and at least one vertical sleeve 125. The axis direction of the vertical sleeve 125 is parallel to the vertical direction. The vertical direction can be referred to as Figure 1 and Figure 9 The direction indicated by the arrow B. The axial direction of the horizontal sleeve 124 is perpendicular to the axial direction of the vertical sleeve 125, and the axial direction of the horizontal sleeve 124 is parallel to the horizontal direction. Figure 1 and Figure 9 The direction indicated by the arrow A in the figure. The axis direction of the inclined sleeve 123 is set at an angle to both the horizontal direction and the vertical direction. Multiple transverse sleeves 124 are distributed at intervals along the circumference of the node connector 1, and multiple inclined sleeves 123 are distributed at intervals along the circumference of the node connector 1.

[0064] Reference Figure 4 、 Figures 8 to 10 At least two sleeves 12 are connected through a fixed frame 13 , and the fixed frame 13 is located inside the shell 11 .

[0065] Specifically, the material of the fixed skeleton 13 can be steel. The sleeve 12 and the fixed skeleton 13 can be connected by welding. By setting the fixed skeleton 13, multiple sleeves 12 can be connected together, thereby fixing the position of the sleeve 12 and preventing the position of the sleeve 12 from shifting. In addition, by setting the fixed skeleton 13, multiple sleeves 12 can be connected together, so that each rod 2 connected to the node connector 1 has a connection relationship, thereby improving the stability of the grid body. In addition, since the fixed skeleton 13 is located inside the shell 11, the shell 11 can protect the fixed skeleton 13 and prevent the fixed skeleton 13 from being corroded.

[0066] The shell 11 can be formed by injection molding. In this case, when preparing the node connector 1 , the plurality of sleeves 12 can be welded to the fixed frame 13 first. After the welding is completed, the shell 11 can be injection molded outside the fixed frame 13 .

[0067] The shell 11 can also be made up of two hemispheres. In this case, when preparing the node connector 1, two hemispheres can be prepared first, and then the sleeve 12 can be assembled on the upper hemisphere. After that, the sleeve 12 is welded to the fixed frame 13, and the remaining sleeve 12 is welded. After welding is completed, the lower hemisphere is assembled and the two hemispheres are bonded together.

[0068] Reference Figure 4 The housing 11 has an inner cavity 111, and the sleeve 12 extends into the inner cavity 111. The length of the sleeve 12 extending into the inner cavity 111 can be set according to actual needs and is not specifically limited in this embodiment. Specifically, the threaded hole 121 in the sleeve 12 extends into the inner cavity 111. By setting the sleeve 12 to extend into the inner cavity 111, the length of the sleeve 12 is increased, thereby increasing the connection length and ensuring the connection performance.

[0069] Reference Figures 4 to 8 At least two through holes 112 are opened on the shell 11, and the outer wall of the sleeve 12 cooperates with the through holes 112; the sleeve 12 includes an outer end surface 122 close to the outer surface of the shell 11, and the outer end surface 122 of the sleeve 12 is lower than or flush with the outer surface of the shell 11.

[0070] Specifically, the number of through holes 112 is equal to the number of sleeves 12. The outer surface of the housing 11 includes a plurality of flat surfaces 113, on which the through holes 112 are formed. The number of flat surfaces 113 is equal to the number of through holes 112. The outer end surface 122 of the sleeve 12 is preferably lower than or flush with the flat surfaces 113. By setting the outer end surface 122 of the sleeve 12 lower than or flush with the outer surface of the housing 11, the sleeve 12 is prevented from protruding outside the housing 11, and corrosion of the sleeve 12 is prevented after the rod 2 is connected to the node connector 1.

[0071] The sleeve 12 and the fixing frame 13 are both made of metal or alloy materials.

[0072] Specifically, the material of the sleeve 12 and the material of the fixed frame 13 are different from the material of the housing 11. The sleeve 12 and the fixed frame 13 are preferably made of steel. Both the sleeve 12 and the fixed frame 13 can be made of Q235B, Q345B, or other similar steel. Steel is highly strong, and when both the sleeve 12 and the fixed frame 13 are made of steel, the connection strength with the rod 2 can be ensured.

[0073] Reference Figures 8 to 10 The fixed skeleton 13 includes a plurality of fixed rods, and each sleeve 12 is connected to at least one fixed rod.

[0074] Specifically, each sleeve 12 is preferably connected to three fixing rods. The multiple fixing rods include multiple intermediate fixing rods 131 and multiple edge fixing rods 132. One end of an intermediate fixing rod 131 is connected to one sleeve 12, and the other end of an intermediate fixing rod 131 is connected to another intermediate fixing rod 131. The ends of an edge fixing rod 132 are respectively connected to two sleeves 12. By arranging each sleeve 12 to be connected to at least one fixing rod, the sleeve 12 is effectively fixed.

[0075] Reference Figures 11 to 17 The rod 2 is connected to the sleeve 12 through the connecting component 7. The connecting component 7 includes a barrel 71 and a screw 72. The screw 72 is screwed to the threaded hole 121. The barrel 71 has a matching hole that matches the screw 72. The barrel 71 includes a limiting portion 711. The limiting portion 711 is located on the side of the matching hole away from the sleeve 12. The limiting portion 711 is used to limit the screw 72 along the axial direction of the screw 72.

[0076] Preferably, each sleeve 12 in the node connector 1 is connected to a connecting member 7. The screw 72 has an external thread 721, which is threadedly connected to the threaded hole 121 via the external thread 721. The mating hole is circular in shape. The mating hole can also be provided with an internal thread, in which case the screw 72 can be threadedly connected via the external thread 721 on the screw 72. The mating hole can also be a plain hole, in which case the barrel 71 and screw 72 can be integrally injection molded.

[0077] The stopper 711 is specifically located on the side of the mating hole that is axially away from the sleeve 12. The stopper 711 can be an annular raised structure. In this case, the stopper 711 has an inner hole with a diameter smaller than that of the mating hole. The stopper 711 contacts a portion of the end of the screw 72 that is away from the sleeve 12. The stopper 711 can be a circular plate-shaped structure. In this case, the stopper 711 blocks the side of the mating hole that is axially away from the sleeve 12, and the entire end of the screw 72 that is away from the sleeve 12 contacts the stopper 711.

[0078] Due to the processing limitations of composite materials, the rod 2 and the node connector 1 cannot be welded. In the embodiment of the present invention, the connection between the rod 2 and the node connector 1 can be achieved through the connecting component 7. In addition, when the screw 72 is installed on the barrel 71, the screw 72 is rotated so that the screw 72 is screwed into the matching hole until the screw 72 contacts the limiter 711. The setting of the limiter 711 can limit the position of the screw 72 along its axial direction, so that after the screw 72 is installed, the screw 72 has a sufficient exposed length to connect with the threaded hole 121.

[0079] Reference Figures 15 to 17 The rod 2 has a hollow cavity 24, the cylinder 71 includes a fitting portion 713, the fitting portion 713 extends into the hollow cavity 24, and the rod 2 is connected to the fitting portion 713 by a fastener 8; the cylinder 71 also includes a stop portion 714 connected to the fitting portion 713, and the stop portion 714 is used to contact the end face of the rod 2.

[0080] Specifically, the hollow cavity 24 can extend through the rod 2 along its length. The fastener 8 can also include a bolt, nut, or the like. The mating portion 713 defines a first mounting hole 7131, and the rod 2 defines a second mounting hole corresponding to the first mounting hole 7131. The first and second mounting holes are configured to allow the bolt to pass through. The bolt's length can be perpendicular to the length of the rod 2.

[0081] The limiting portion 711 can be connected to the mating portion 713 via the connecting portion 712, and the stop portion 714 can be located at the junction of the connecting portion 712 and the mating portion 713. The rod 2 has two end surfaces disposed opposite each other along its length, and the stop portion 714 is configured to contact the end surfaces of the rod 2. During connection of the connecting component 7 to the rod 2, the mating portion 713 is first extended into the hollow cavity 24 until the stop portion 714 contacts the end surface of the rod 2. At this point, the position of the first mounting hole 7131 corresponds to the position of the second mounting hole. The mating portion 713 and the rod 2 are then connected using the fastener 8.

[0082] The cylindrical member 71 also includes an outer ring portion 715 connected to the stop portion 714. The cross-sectional shape of the outer ring portion 715 matches the cross-sectional shape of the outer surface of the rod 2. For example, if the cross-sectional shape of the outer surface of the rod 2 is circular, the cross-sectional shape of the outer ring portion 715 is also circular. In this case, the inner diameter of the outer ring portion 715 is greater than or equal to the outer diameter of the rod 2. When the connecting component 7 is connected to the rod 2, the outer ring portion 715 is located outside the rod 2. The outer ring portion 715 and the end of the mating portion 713 away from the screw 72 are both provided with a guide surface 716. The guide surface 716 can be an inclined surface, a curved surface, etc. The guide surface 716 is used to guide the rod 2 during the installation process of the connecting component 7, thereby facilitating the installation of the rod 2.

[0083] When connecting the rod 2 and the node connector 1 through the connecting component 7, the screw 72 in the connecting component 7 can be screwed to the sleeve 12 in the node connector 1 first, and then the cylinder 71 in the connecting component 7 can be connected to the rod 2 through the fastener 8. The entire grid body can be connected to multiple rods 2 and multiple node connectors 1 in sequence according to the above order, thereby completing the construction of the entire grid body. The installation sequence is simple and efficient, which can speed up the construction of the entire photovoltaic system.

[0084] Reference Figure 1 and Figure 2 The photovoltaic grid provided by the embodiment of the present invention also includes at least one supporting structure connected to the bottom of the grid body, and the material of the supporting structure is any one of whisker composite material, basalt fiber composite material, carbon fiber composite material, and glass fiber composite material.

[0085] Specifically, each support structure includes a support column 5, a plurality of support rods 4 and a plurality of supports 3. The bottom of the support rod 4 is connected to the top of the support column 5 through a support plate 6, and the top of the support rod 4 is connected to the node connector 1 through the support 3. The support rods 4 are arranged at an angle. The number of supports 3 is equal to the number of support rods 4. The number of support rods 4 included in each support structure can be two, three, four, etc. The support structure includes a support 3, and the support 3 is detachably connected to the node connector 1. The support 3 is preferably threadedly connected to the sleeve 12 in the node connector 1.

[0086] When the material of the supporting structure is any one of whisker composite materials, basalt fiber composite materials, carbon fiber composite materials, and glass fiber composite materials, the supporting structure has good corrosion resistance and salt spray resistance. The supporting structure using this composite material can be installed in an offshore scene and can achieve full life cycle service without the need for regular anti-corrosion maintenance, thereby reducing anti-corrosion and maintenance costs, and thus reducing the cost of photovoltaic power stations.

[0087] The installation process of the above-mentioned photovoltaic grid is as follows: first, the support column 5 is positioned and installed according to the design, and the upper chord 21, the web 22, and the lower chord 23 are pre-assembled through the node connector 1 to form the grid body; then the support rod 4 is connected to the support column 5, and the support 3 is connected to the support rod 4; then the grid body is hoisted to the designed position, and the corresponding node connector 1 and the support 3 are connected; finally, the purlins are installed on the grid body to form the photovoltaic grid.

[0088] In a second aspect, the present invention also discloses a photovoltaic system comprising any of the above-mentioned photovoltaic grids and photovoltaic modules mounted on the photovoltaic grid. Purlins are mounted on the main frame of the photovoltaic grid, and the photovoltaic modules are connected to the purlins by bolts.

[0089] Since the photovoltaic system includes the above-mentioned photovoltaic grid, it also has the beneficial effects of the above-mentioned photovoltaic grid, which will not be described in detail here.

[0090] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0091] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the purpose of the present invention and the claims, which are all within the protection of the present invention.

Claims

1. A photovoltaic grid, characterized in that: The grid body comprises a plurality of rods and a plurality of node connectors, wherein the node connectors are detachably connected to the rods, and the node connectors connect at least two of the rods; The node connection member includes a shell, the rod member is made of a first composite material, and the shell is made of a second composite material; The first composite material is any one of a whisker composite material, a basalt fiber composite material, a carbon fiber composite material, and a glass fiber composite material; the second composite material is any one of a whisker composite material, a basalt fiber composite material, a carbon fiber composite material, and a glass fiber composite material.

2. The photovoltaic grid according to claim 1, characterized in that: The node connection member further includes at least two sleeves connected to the rod members, threaded holes are formed on the sleeves, and the sleeves are embedded in the shell.

3. The photovoltaic grid according to claim 2, characterized in that: At least two of the sleeves are connected via a fixed frame, and the fixed frame is located inside the shell.

4. The photovoltaic grid according to claim 2 or 3, characterized in that: The shell has an inner cavity, and the sleeve extends into the inner cavity.

5. The photovoltaic grid according to claim 2 or 3, characterized in that: The housing is provided with at least two through holes, and the outer wall of the sleeve matches the through holes; The sleeve comprises an outer end surface close to the outer surface of the shell, and the outer end surface of the sleeve is lower than or flush with the outer surface of the shell.

6. The photovoltaic grid according to claim 3, characterized in that: The sleeve and the fixing frame are both made of metal or alloy materials.

7. The photovoltaic grid according to claim 3, characterized in that: The fixed frame includes a plurality of fixed rods, and each of the sleeves is connected to at least one of the fixed rods.

8. The photovoltaic grid according to claim 2, characterized in that: The rod is connected to the sleeve via a connecting component, wherein the connecting component includes a cylinder and a screw, and the screw is screwed to the threaded hole; The barrel has a matching hole matching with the screw rod, and the barrel includes a limiting portion, which is located on a side of the matching hole away from the sleeve, and is used to limit the screw rod along the axial direction of the screw rod.

9. The photovoltaic grid according to claim 8, characterized in that: The rod has a hollow cavity, the cylinder includes a matching portion, the matching portion extends into the hollow cavity, and the rod and the matching portion are connected by a fastener; The cylinder also includes a stopper connected to the matching portion, and the stopper is used to contact the end surface of the rod.

10. The photovoltaic grid according to claim 1, characterized in that: It also includes at least one supporting structure connected to the bottom of the grid body, and the material of the supporting structure is any one of whisker composite material, basalt fiber composite material, carbon fiber composite material, and glass fiber composite material.

11. The photovoltaic grid according to claim 10, characterized in that: The supporting structure includes a support, and the support is detachably connected to the node connector.

12. A photovoltaic system, characterized in that: The photovoltaic grid comprises the photovoltaic grid according to any one of claims 1 to 11 and photovoltaic modules installed on the photovoltaic grid.

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