Photovoltaic fixed assembly and photovoltaic system

Abstract

The application discloses a photovoltaic fixed assembly and a photovoltaic system, and belongs to the photovoltaic equipment field, which comprises a photovoltaic support, the photovoltaic support is used for obliquely installing a plurality of photovoltaic panels, a plurality of connecting blocks, each connecting block is arranged on the upper edge and the lower edge of the photovoltaic panel, wherein the connecting block on the upper edge of the photovoltaic panel is hinged on the photovoltaic support, a plurality of elastic telescopic assemblies, the connecting block on the lower edge of the photovoltaic panel is connected with one elastic telescopic assembly, one end of the elastic telescopic assembly is hinged on the connecting block on the lower edge of the photovoltaic panel, and the other end is hinged on the photovoltaic support, the elastic telescopic assembly is used for automatically elongating to make the photovoltaic panel rotate along the upper edge after the photovoltaic panel is subjected to a preset back thrust, and automatically restoring the photovoltaic panel to the initial inclined state after the back thrust disappears. The application improves the wind resistance of the photovoltaic fixed assembly.

Description

Technical Field

[0001] This invention belongs to the field of photovoltaic equipment, specifically relating to a photovoltaic fixed component and a photovoltaic system. Background Technology

[0002] Photovoltaic modules are exposed to the natural environment for extended periods, and strong winds are one of the main external forces causing damage and failure. Wind loads can not only cause modules to deform, crack, or even detach, but also threaten the safety of the support structure, foundation, and the entire power station through cascading forces. Therefore, deploying wind-resistant structures is a prerequisite for ensuring the safe and stable operation of photovoltaic systems under extreme weather conditions, and is of fundamental significance for preventing safety accidents and extending the system's lifespan.

[0003] Currently, existing wind-resistant structures typically employ the following three methods:

[0004] Firstly, high-strength materials are used, frame height is optimized, gaskets are added, and bolt connection methods are improved to enhance the wind resistance of photovoltaic modules;

[0005] Secondly, windbreaks are deployed separately to reduce the amount of strong winds acting on the photovoltaic modules;

[0006] Third, adjust the tilt angle of the photovoltaic modules to reduce the impact area of ​​strong winds and improve wind resistance.

[0007] However, the above three methods have the following problems in practical applications:

[0008] 1. The first method requires workers to strictly follow the design standards for installation, which is more difficult to carry out, and the high-strength materials will increase the installation cost of photovoltaic modules;

[0009] 2. When deploying windbreaks, a more stable installation structure is required because the windbreaks are directly subjected to the impact of strong winds, which increases the difficulty of construction;

[0010] 3. Currently, the tilt angle of photovoltaic modules is mainly adjusted by adjusting the height of the support frame or rotating the photovoltaic panel. However, both of these adjustment methods require the addition of motors or lifting rods, as well as the deployment of sensors to detect wind speed, which increases the installation cost of photovoltaic modules. Furthermore, the tilt angle adjustment speed is relatively slow and cannot cope with rapid changes in wind speed.

[0011] Therefore, existing technologies suffer from the problems of high difficulty and high cost in reinforcement construction. Summary of the Invention

[0012] The purpose of this invention is to provide a photovoltaic fixed module and photovoltaic system to solve the problems of high difficulty and high cost in reinforcement construction of existing technologies.

[0013] To achieve the above objectives, the present invention adopts the following technical solution:

[0014] In a first aspect, the present invention provides a photovoltaic fixed module, comprising:

[0015] Photovoltaic support frame, which is used for tilting and installing multiple photovoltaic panels;

[0016] A plurality of connecting blocks are deployed on the upper and lower edges of a photovoltaic panel, wherein the connecting blocks on the upper edge of the photovoltaic panel are hinged to a photovoltaic support.

[0017] Multiple sets of elastic telescopic components are provided, and each connecting block on the lower edge of the photovoltaic panel is connected to a set of elastic telescopic components; one end of the elastic telescopic component is hinged to the connecting block on the lower edge of the photovoltaic panel, and the other end is hinged to the photovoltaic support; the elastic telescopic component is used to automatically extend when the photovoltaic panel is subjected to a back thrust reaching a preset thrust so that the photovoltaic panel rotates along the upper edge, and to automatically restore the photovoltaic panel to the initial tilt state after the back thrust disappears.

[0018] Preferably, the photovoltaic panel includes: a main body and an outer frame disposed on the main body, wherein the bottom of the outer frame is provided with a folded edge.

[0019] Preferably, the connecting block comprises two C-shaped blocks arranged opposite each other;

[0020] One of the C-shaped blocks is clamped on the outer frame, and a slot is provided on the end face of one of the C-shaped blocks. A locking bolt is inserted into one of the C-shaped blocks, and one end of the locking bolt extends into the slot.

[0021] Another C-block is held on the folded edge, and the end of another C-block is inserted into the slot. The locking bolt is screwed onto the end face of another C-block, and the middle of the other C-block is provided with a mounting groove.

[0022] Preferably, the photovoltaic support includes multiple inclined longitudinal beams, each longitudinal beam having a vertical pole connected to both ends, and multiple horizontal beams on the longitudinal beams, with at least two horizontal beams under each photovoltaic panel;

[0023] A T-shaped connector is hinged in the mounting groove of the connecting block located on the edge of the photovoltaic panel, and the T-shaped connector is fixed to the crossbeam near the edge of the photovoltaic panel;

[0024] One end of the elastic telescopic component is hinged in the mounting groove of the connecting block located on the lower edge of the photovoltaic panel, and the other end of the elastic telescopic component is connected to the crossbeam near the lower edge of the photovoltaic panel.

[0025] Preferably, each set of elastic telescopic components includes: a sleeve and a connecting rod inserted into the sleeve, a first spring is sleeved on the connecting rod located in the sleeve, and a limiting part is provided on the inner end of the connecting rod, and the outer end of the connecting rod is hinged to the corresponding connecting block.

[0026] Preferably, the sleeve is provided with a reset buffer structure for slowly restoring the photovoltaic panel to its initial tilt state after the back thrust disappears. The reset buffer structure includes a tube connected to the inner end of the connecting rod, a piston sleeved on the tube, a through hole on the tube, an inner tube and a T-shaped plug inserted inside the tube, a first notch at one end of the inner tube, the through hole located within the first notch, the outer diameter of the head of the plug matching the inner diameter of the tube, a plurality of second notches along the circumferential direction of the head of the plug, the outer diameter of the rod of the plug matching the inner diameter of the inner tube, the rod of the plug inserted into the other end of the inner tube, a plurality of grooves on the inner wall of the inner tube, each groove extending axially along the inner tube and penetrating the other end face of the inner tube, the depth of the groove gradually decreasing along the direction close to the other end face of the inner tube.

[0027] Preferably, the side of the groove on the axial direction of the inner tube is a wedge-shaped surface or a stepped surface.

[0028] Preferably, the inside of the tube is provided with a protrusion, the other end of the inner tube abuts against the protrusion, and the tube is also provided with a second spring for resetting the plug.

[0029] Secondly, the present invention also provides a photovoltaic system, the system comprising:

[0030] Several photovoltaic panels;

[0031] Multiple sets of fixed photovoltaic modules, with multiple photovoltaic panels installed at an angle on the photovoltaic bracket of each set of fixed photovoltaic modules;

[0032] A number of support piles are cast into the ground, and the photovoltaic brackets of the photovoltaic fixed components are installed on the support piles.

[0033] The beneficial effects of this invention are:

[0034] 1. This invention utilizes connecting blocks to mount photovoltaic panels onto photovoltaic brackets. The connecting blocks on the upper edge of the photovoltaic panel are hinged to the photovoltaic brackets, allowing the photovoltaic panel to rotate around one side of the upper edge. Furthermore, an elastic telescopic component is connected to the connecting blocks on the lower edge of the photovoltaic panel. This elastic component has a certain elasticity, which presses the photovoltaic panel firmly onto the photovoltaic brackets. When the rear side of the photovoltaic panel is subjected to a thrust (reverse thrust), the elastic telescopic component can quickly extend, causing the photovoltaic panel to rotate around one side of the upper edge. This reduces the tilt angle of the photovoltaic panel, decreases its windward area, and reduces the impact force. Because some wind flows out through the gaps created by the rotating photovoltaic panel, the amount of wind directed to the lower photovoltaic panel is reduced, further reducing the impact force on the lower photovoltaic panel and improving the wind resistance of the photovoltaic mounting system.

[0035] 2. When the back thrust on the photovoltaic panel disappears or is less than the preset thrust, the photovoltaic panel can automatically return to its initial tilt state under the action of the elastic telescopic component, ensuring the normal operation of the photovoltaic panel. Attached Figure Description

[0036] The accompanying drawings are provided to further illustrate embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. In the drawings:

[0037] Figure 1 This is a schematic diagram of the overall structure of a photovoltaic fixed module provided in one embodiment of the present invention;

[0038] Figure 2 This is a cross-sectional schematic diagram of a photovoltaic panel after assembling the connecting block, according to one embodiment of the present invention;

[0039] Figure 3 This is a schematic diagram of the overall structure of the connecting block provided in one embodiment of the present invention;

[0040] Figure 4 This is a schematic diagram of the internal structure of an elastic telescopic component provided in one embodiment of the present invention;

[0041] Figure 5 yes Figure 4 Enlarged view of part A in the structure shown;

[0042] Figure 6 This is a schematic diagram of the inner tube provided in one embodiment of the present invention;

[0043] Figure 7 This is a schematic diagram of the structure of a plug provided in one embodiment of the present invention;

[0044] Figure 8 This is a schematic diagram of the layout of a photovoltaic system provided in one embodiment of the present invention.

[0045] Explanation of reference numerals in the attached figures:

[0046] 1. Main body; 2. Outer frame; 3. Folded edge; 4. C-block; 5. Slot; 6. Locking bolt; 7. Mounting groove; 8. Longitudinal beam; 9. Upright pole; 10. Crossbeam; 11. Reinforcing rod; 12. T-shaped connector; 13. Sleeve; 14. Connecting rod; 15. First spring; 16. Limiting part; 17. Tube body; 18. Piston; 19. Through hole; 20. Inner tube; 21. Plug; 22. First notch; 23. Second notch; 24. Groove; 25. Protrusion; 26. Second spring; 27. Support pile. Detailed Implementation

[0047] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the present invention will be briefly introduced below in conjunction with the accompanying drawings and descriptions of the embodiments or the prior art. Obviously, the following description of the structure of the accompanying drawings is only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. It should be noted that the description of these embodiments is for the purpose of helping to understand the present invention, but does not constitute a limitation of the present invention.

[0048] Example 1

[0049] Figure 1 This is a schematic diagram of the overall structure of a photovoltaic fixed module provided in one embodiment of the present invention. Figure 1 As shown, this embodiment provides a photovoltaic fixed component, including: a photovoltaic bracket, several connecting blocks, and multiple sets of elastic telescopic components.

[0050] In this embodiment, the photovoltaic support structure consists of columns, crossbeams 10, and longitudinal beams 8. The photovoltaic support structure includes eight columns arranged in two rows, front and back. The height of the columns in the front row is less than that of the columns in the back row. Both ends of the longitudinal beams 8 are fixed to the front and back columns, resulting in four longitudinal beams 8, all of which are inclined. Because the longitudinal beams 8 are inclined, the photovoltaic panels on the photovoltaic support structure are also inclined. To improve support strength and stability, each column is connected to an inclined reinforcing rod 11. One end of the reinforcing rod 11 is fixed to the bottom of the column, and the other end is fixed to the middle of the longitudinal beam 8.

[0051] Multiple crossbeams 10 are installed on the longitudinal beam 8. A photovoltaic panel is installed on two crossbeams 10, meaning that there are two crossbeams 10 below a photovoltaic panel. A row of photovoltaic panels is deployed on the two crossbeams 10, and the number of photovoltaic panels in a row is four to six. In this embodiment, two rows of photovoltaic panels are deployed on the photovoltaic support, so the photovoltaic support has a total of four crossbeams 10. In this embodiment, the crossbeams 10, longitudinal beams 8, and columns are all connected by bolts.

[0052] In this embodiment, three to four connecting blocks are installed on each photovoltaic panel, with connecting blocks installed on both the upper and lower edges of the photovoltaic panel. The upper edge of the photovoltaic panel in this embodiment refers to the side of the photovoltaic panel that is higher up, and the lower edge refers to the side of the photovoltaic panel that is lower down. Two or three connecting blocks are installed on the upper edge of the photovoltaic panel, and one or two connecting blocks are installed on the lower edge. The number of connecting blocks in this embodiment can be flexibly selected according to actual needs. For example, when the environment where the photovoltaic panel is located frequently experiences strong winds of a high intensity, three connecting blocks are installed on the upper edge and two connecting blocks are installed on the lower edge; when the environment where the photovoltaic panel is located occasionally experiences strong winds of a relatively low intensity, two connecting blocks are installed on the upper edge and one connecting block is installed on the lower edge.

[0053] In this embodiment, the connecting block on the upper edge of the photovoltaic panel is hinged to the photovoltaic bracket, allowing the photovoltaic panel to rotate around one side of the upper edge. The connecting blocks on the lower edge of the photovoltaic panel are all connected to a set of elastic telescopic components. One end of the elastic telescopic component is hinged to the connecting block on the lower edge of the photovoltaic panel, and the other end is hinged to the photovoltaic bracket. The elastic telescopic component is used to automatically extend when the photovoltaic panel is subjected to a back thrust reaching a preset thrust, so that the photovoltaic panel can rotate along the upper edge, and to automatically return the photovoltaic panel to its initial tilt state after the back thrust disappears.

[0054] In this embodiment, the wind blowing from behind the photovoltaic panel acts directly on the rear side of the photovoltaic panel. At this time, the impact force on the photovoltaic panel is entirely borne by the connectors (such as bolts in the prior art and the connecting blocks in this embodiment). If the impact force is too large, it will cause the connectors to fail, which will lead to the photovoltaic panel falling off (usually the impact force generated by the wind blowing from the front is borne by the crossbeam 10 and the longitudinal beam 8, and the connectors are not prone to failure). Therefore, in this embodiment, an elastic telescopic component is connected to the connecting block on the lower edge of the photovoltaic panel. The elastic telescopic component has a certain elasticity, which presses the photovoltaic panel tightly onto the photovoltaic bracket. When the rear side of the photovoltaic panel is subjected to a thrust (back thrust), the elastic telescopic component can quickly extend, causing the photovoltaic panel to rotate around the upper edge. At this time, the tilt angle of the photovoltaic panel is reduced, the windward area of ​​the photovoltaic panel is reduced, and the impact force is reduced. Since some wind flows out from the gap of the photovoltaic panel after rotation, the amount of wind guided to the photovoltaic panel below is reduced, which also reduces the impact force on the photovoltaic panel below, improving the wind resistance of the photovoltaic fixing component. Secondly, when the back thrust on the photovoltaic panel disappears or is less than the preset thrust, the photovoltaic panel can automatically return to the initial tilt state under the action of the elastic telescopic component, ensuring the normal operation of the photovoltaic panel.

[0055] As a further optimization of this embodiment, the photovoltaic panel of this embodiment includes: a main body 1 and an outer frame 2 disposed on the main body 1. The bottom of the outer frame 2 is provided with a folded edge 3. The outer frame 2 of this embodiment is made of high-strength material, so that the photovoltaic panel has high wind resistance.

[0056] As a further optimization of this embodiment, in order to make the connecting block have high installation stability and ease of installation, the connecting block includes two C-shaped blocks 4 arranged opposite to each other;

[0057] One of the C-shaped blocks 4 is clamped on the outer frame 2, and a slot 5 is provided on the end face of one of the C-shaped blocks 4. A locking bolt 6 is inserted into one of the C-shaped blocks 4, and one end of the locking bolt 6 extends into the slot 5.

[0058] Another C-block 4 is clamped on the folded edge 3, and the end of another C-block 4 is inserted into the slot 5. The locking bolt 6 is screwed onto the end face of another C-block 4, and the middle of the other C-block 4 is provided with a mounting groove 7.

[0059] During installation, loosen the locking bolt 6 to separate the two C-blocks 4, then insert the two C-blocks 4 into the outer frame 2 and the folded edge 3 respectively, and then tighten the locking bolt 6. The two C-blocks 4 will then close together to form an L-shaped clamping area, firmly holding the outer frame 2 of the photovoltaic panel. Therefore, the connecting block of this embodiment has high installation stability and good installation convenience.

[0060] In this embodiment, a T-shaped connector 12 is hinged in the mounting groove 7 of the connecting block located on the upper edge of the photovoltaic panel, and the T-shaped connector 12 is fixed on the crossbeam 10 near the upper edge of the photovoltaic panel; one end of the elastic telescopic component is hinged in the mounting groove 7 of the connecting block located on the lower edge of the photovoltaic panel, and the other end of the elastic telescopic component is connected to the crossbeam 10 near the lower edge of the photovoltaic panel.

[0061] In this embodiment, each set of elastic telescopic components includes: a sleeve 13 and a connecting rod 14 inserted in the sleeve 13. A first spring 15 is sleeved on the connecting rod 14 located in the sleeve 13, and a limiting part 16 is provided on the inner end of the connecting rod 14. The outer end of the connecting rod 14 is hinged to the corresponding connecting block.

[0062] When the photovoltaic panel is subjected to a back thrust that reaches the preset thrust, the connecting rod 14 extends out from the sleeve 13, at which point the first spring 15 is compressed; at the same time, the photovoltaic panel rotates along the upper edge to reduce the tilt angle; when the back thrust on the photovoltaic panel disappears or is less than the preset thrust, the first spring 15, under the action of elastic potential energy, causes the connecting rod 14 to retract into the sleeve 13, at which point the photovoltaic panel rotates in the opposite direction to reset the photovoltaic panel.

[0063] In this embodiment, during windy weather, the wind direction is not fixed, and there will be alternating back winds (blowing from the rear of the photovoltaic panel to the front) and front winds (blowing from the front of the photovoltaic panel to the rear). In such continuous windy weather, after the photovoltaic panel is subjected to a back wind, it rotates to reduce its tilt angle and reduce the impact force generated by the back wind. When the back wind disappears, the front wind acts on the photovoltaic panel, causing it to quickly reset. However, in weather with alternating back and front winds, the photovoltaic panel will experience continuous and significant shaking, which can easily damage it. Furthermore, when the impact force generated by the front wind is too large, the photovoltaic panel will reset too quickly, causing it to collide with the crossbeam 10, which can further increase the risk of damage.

[0064] To address the aforementioned issues, the sleeve 13 in this embodiment is equipped with a reset buffer structure to allow the photovoltaic panel to slowly return to its initial tilted state after the back thrust disappears. Specifically, the average speed of the photovoltaic panel rotating in the forward direction is much greater than the average speed rotating in the reverse direction. The reset buffer structure includes a tube 17 connected to the inner end of the connecting rod 14, such as... Figure 4 and Figure 5 As shown, the inner end of the connecting pipe is screwed into the pipe body 17, and the limiting part 16 can be set on the pipe body 17.

[0065] A piston 18 is fitted over the outer sleeve of the tube body 17. The tube body 17 has a through hole 19. An inner tube 20 and a T-shaped plug 21 are inserted inside the tube body 17. One end of the inner tube 20 has a first notch 22, and the through hole 19 is located within the first notch 22. The outer diameter of the head of the plug 21 matches the inner diameter of the tube body 17. The head of the plug 21 has multiple second notches 23 along its circumference. Figure 6 As shown, the outer diameter of the rod of the plug 21 is adapted to the inner diameter of the inner tube 20. The rod of the plug 21 is inserted into the other end of the inner tube 20. The inner wall of the inner tube 20 is provided with multiple grooves 24, each groove 24 extending axially along the inner tube 20 and penetrating the other end face of the inner tube 20. The depth of the groove 24 gradually decreases along the direction close to the other end face of the inner tube 20. In this embodiment, the side of the groove 24 along the axial direction of the inner tube 20 is a wedge-shaped surface or a stepped surface, such as... Figure 7 As shown.

[0066] In this embodiment, the piston 18 is adapted to the inner diameter of the sleeve 13. Figure 4In the middle, piston 18 is at the far right, and connecting rod 14 is fully retracted into sleeve 13, with the photovoltaic panel at its maximum tilt angle. When the photovoltaic panel rotates under force, connecting rod 14 moves to the left. At this time, piston 18 divides the sleeve 13 into two spaces, which are connected by inner tube 20. As piston 18 continues to move to the left, the pressure in the left space increases, and airflow from left to right is generated in inner tube 20 (the greater the back thrust on the photovoltaic panel, the faster the airflow). After being impacted by the airflow, plug 21 moves to the right, and the rod of plug 21 gradually moves out of inner tube 20. The gap in the channel formed by groove 24 increases, that is, the flow area of ​​inner tube 20 increases. At this time, air in the left space can quickly flow into the right space, and connecting rod 14 will quickly extend, causing the tilt angle of the photovoltaic panel to decrease rapidly, thereby quickly reducing the windward area of ​​the photovoltaic panel.

[0067] When the reverse thrust on the photovoltaic panel disappears or is less than the preset thrust, the connecting rod 14 moves to the right under the elastic force of the first spring 15. At this time, the pressure in the right space increases and the pressure in the left space decreases. An airflow from right to left is generated in the inner tube 20. After being impacted by the airflow, the plug 21 moves to the left and the rod of the plug 21 is inserted into the inner tube 20. At this time, the gap of the channel formed by the groove 24 decreases, that is, the flow area of ​​the inner tube 20 decreases, and the airflow flows slowly from right to left. At this time, the extension and retraction speed of the connecting rod 14 is low, that is, the reverse rotation speed of the photovoltaic panel is low.

[0068] When the photovoltaic panel is impacted by a frontal wind, the connecting rod 14 experiences a greater thrust, resulting in greater pressure in the right-side space. This pressure generates a thrust at the head of the plug 21. The greater the pressure, the greater the thrust, causing the plug 21 to move to its extreme position to the left. At this point, the gap in the channel formed by the trough 24 is very small, and the flow area of ​​the inner tube 20 is also very small, resulting in only a small airflow to the left. Consequently, the reverse rotation speed of the photovoltaic panel is very small, preventing it from immediately returning to its original position. Therefore, under weather conditions with alternating frontal and rearal winds, after the photovoltaic panel rotates forward, it will only sway within a very small range, making it less prone to damage.

[0069] As a further optimization of this embodiment, when the plug 21 is pushed to the left, the plug 21 moves to the left limit position. When the plug 21 is only subjected to the elastic force of the first spring 15, the airflow velocity in the inner tube 20 is still at its minimum, which will result in a slow reset speed under normal conditions. In order to solve this problem, a protrusion 25 is provided on the inside of the tube body 17, and the other end of the inner tube 20 abuts against the protrusion 25. A second spring 26 is also provided in the tube body 17 for resetting the plug 21.

[0070] In this embodiment, the protrusion 25 is used to limit the inner tube 20, preventing it from moving within the tube body 17. One end of the second spring 26 is fixedly connected to the head of the plug 21, and the other end is fixedly connected to the inner wall of the tube body 17. After the plug 21 moves to the left, it stretches the second spring 26. When the photovoltaic panel rotates forward, the pressure in the space on the right side decreases or disappears after the impact force of the front wind decreases, the leftward thrust on the pusher decreases, and under the action of the second spring 26, the plug 21 moves to the right, increasing the gap in the channel formed by the groove 24, increasing the flow area of ​​the inner tube 20, increasing the airflow velocity from right to left, accelerating the contraction speed of the connecting rod 14, and allowing the photovoltaic panel to rotate back to its normal reverse position.

[0071] Example 2

[0072] Figure 8 This is a schematic diagram of the layout of a photovoltaic system provided in one embodiment of the present invention. Figure 8 As shown, this embodiment provides a photovoltaic system, which includes: a plurality of photovoltaic panels, a plurality of photovoltaic fixed components as described in Embodiment 1, and a plurality of support piles 27.

[0073] Each photovoltaic fixed component has multiple photovoltaic panels installed at an angle on its photovoltaic support frame. The support pile 27 is cast into the ground, and the photovoltaic support frame of the photovoltaic fixed component is installed on the support pile 27.

[0074] The photovoltaic system in this embodiment has better wind resistance.

[0075] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A photovoltaic fixed module, characterized in that, include: Photovoltaic support frame, which is used for tilting and installing multiple photovoltaic panels; A plurality of connecting blocks are deployed on the upper and lower edges of a photovoltaic panel, wherein the connecting blocks on the upper edge of the photovoltaic panel are hinged to a photovoltaic support. Multiple sets of elastic telescopic components are provided, and each connecting block on the lower edge of the photovoltaic panel is connected to a set of elastic telescopic components; one end of the elastic telescopic component is hinged to the connecting block on the lower edge of the photovoltaic panel, and the other end is hinged to the photovoltaic support; the elastic telescopic component is used to automatically extend when the photovoltaic panel is subjected to a back thrust reaching a preset thrust so that the photovoltaic panel rotates along the upper edge, and to automatically return the photovoltaic panel to the initial tilt state after the back thrust disappears. Each set of elastic telescopic components includes: a sleeve (13) and a connecting rod (14) inserted in the sleeve (13). A first spring (15) is sleeved on the connecting rod (14) located in the sleeve (13), and a limiting part (16) is provided on the inner end of the connecting rod (14). The outer end of the connecting rod (14) is hinged to the corresponding connecting block. The sleeve (13) is provided with a reset buffer structure for the photovoltaic panel to slowly return to its initial tilt state after the back thrust disappears. The reset buffer structure includes a tube (17) connected to the inner end of the connecting rod (14). A piston (18) is sleeved on the tube (17). A through hole (19) is provided on the tube (17). An inner tube (20) and a T-shaped plug (21) are inserted into the tube (17). A first notch (22) is provided at one end of the inner tube (20). The through hole (19) is located in the first notch (22). The plug (21) has a first notch (22) at one end. The outer diameter of the head is adapted to the inner diameter of the tube (17). The head of the plug (21) is provided with a plurality of second notches (23) along the circumferential direction. The outer diameter of the rod of the plug (21) is adapted to the inner diameter of the inner tube (20). The rod of the plug (21) is inserted into the other end of the inner tube (20). The inner wall of the inner tube (20) is provided with a plurality of grooves (24). Each groove (24) extends along the axial direction of the inner tube (20) and penetrates the other end face of the inner tube (20). The depth of the groove (24) gradually becomes shallower along the direction close to the other end face of the inner tube (20).

2. The photovoltaic fixed module according to claim 1, characterized in that, The photovoltaic panel includes a main body (1) and an outer frame (2) disposed on the main body (1), wherein the bottom of the outer frame (2) is provided with a folded edge (3).

3. The photovoltaic fixed module according to claim 2, characterized in that, The connecting block includes two C-shaped blocks (4) arranged opposite to each other; One of the C-shaped blocks (4) is clamped on the outer frame (2), and a slot (5) is provided on the end face of one of the C-shaped blocks (4), and a locking bolt (6) is inserted into one of the C-shaped blocks (4), one end of the locking bolt (6) extending into the slot (5); Another C-block (4) is held on the folded edge (3), and the end of another C-block (4) is inserted into the slot (5). The locking bolt (6) is screwed onto the end face of another C-block (4), and the middle of the other C-block (4) is provided with a mounting groove (7).

4. The photovoltaic fixed module according to claim 3, characterized in that, The photovoltaic support includes multiple inclined longitudinal beams (8), each longitudinal beam (8) is connected to a pole (9) at both ends, and multiple crossbeams (10) are provided on the longitudinal beams (8), with at least two crossbeams (10) under each photovoltaic panel. A T-shaped connector (12) is hinged in the mounting groove (7) of the connecting block located on the edge of the photovoltaic panel, and the T-shaped connector (12) is fixed on the crossbeam (10) near the edge of the photovoltaic panel; One end of the elastic telescopic component is hinged in the mounting groove (7) of the connecting block located on the lower edge of the photovoltaic panel, and the other end of the elastic telescopic component is connected to the crossbeam (10) near the lower edge of the photovoltaic panel.

5. The photovoltaic fixed module according to claim 1, characterized in that, The side of the groove (24) on the axial direction of the inner tube (20) is a wedge-shaped surface or a stepped surface.

6. The photovoltaic fixed module according to claim 1, characterized in that, The tube body (17) has a protrusion (25) inside, and the other end of the inner tube (20) abuts against the protrusion (25). The tube body (17) also has a second spring (26) for resetting the plug (21).

7. A photovoltaic system, characterized in that, The system includes: Several photovoltaic panels; Multiple sets of photovoltaic fixed components as described in any one of claims 1-6, wherein multiple photovoltaic panels are obliquely installed on the photovoltaic bracket of each set of photovoltaic fixed components; A number of support piles (27) are cast on the ground, and the photovoltaic brackets of the photovoltaic fixed components are installed on the support piles (27).

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