A slope photovoltaic system and a construction method thereof

Abstract

The application discloses a kind of side slope photovoltaic system and its construction method, mainly solve the problems of side slope instability, low power generation efficiency and no energy storage function in prior art.The system includes prestressed anchor cable, honeycomb lattice beam, concrete pedestal and photovoltaic unit.Among them: lattice beam is poured with self-healing concrete containing bacillus, and the crack repair rate reaches 80%-90%;Solid-state battery and phase change material are built-in in the concrete pedestal, energy storage and heat dissipation are realized;Photovoltaic unit is linked through photonic crystal sensor and piezoelectric ceramic accelerator, and dynamically tracks the solar azimuth angle;Two-way slide rail and high-damping rubber pad are provided at the bottom of the pedestal, which supports precise displacement adjustment and inhibits vibration transmission.ηtotal efficiency model is used for real-time monitoring during construction.The application improves the stability of side slope, power generation efficiency and construction convenience, and is suitable for highway side slope and other scenes.

Description

Technical Field

[0001] This invention belongs to the field of slope protection technology, and in particular relates to a slope photovoltaic system and its construction method. Background Technology

[0002] With the transformation of the global energy structure, solar energy, as a clean and renewable resource, plays a vital role in promoting sustainable development goals. Photovoltaic power generation systems, as an effective way to convert solar energy into electricity, are gradually becoming an important component of the global energy supply. Against this backdrop, photovoltaic slope structures have emerged, representing an innovative attempt to integrate transportation and energy networks. By combining photovoltaic power generation systems with highway slope structures, not only is the utilization efficiency of roadside assets improved, but it also plays a significant role in promoting the green and low-carbon transformation of transportation. The vast land resources provided by highway slopes offer ideal installation sites for the photovoltaic industry, making it possible to produce clean energy without affecting the original land use.

[0003] However, existing photovoltaic slope structures still have a series of problems in design and implementation. First, ensuring the stability of the slope after the photovoltaic panels are loaded is crucial to ensuring the safe application of the entire structure. Inappropriate design and construction may lead to slope instability, affecting the overall safety of the system. In addition, the existing photovoltaic slope structure designs are often quite complex, which not only increases the difficulty of construction but also increases maintenance costs. At the same time, due to complex terrain and possible shading, the power generation efficiency of the photovoltaic system sometimes fails to meet expectations. Especially during rainfall, water accumulation on the slope can cause erosion, further affecting the installation reliability of the photovoltaic system and reducing the possibility of long-term stable operation. The patented photovoltaic panel support structure and device for highway slopes with a lattice beam foundation (CN220798126U) has significant defects under dynamic geological loads. Slope geological deformations such as landslides and frost heave can cause stress concentration at the lattice beam nodes, resulting in cracks under long-term action and affecting structural stability. Meanwhile, traditional rigid nodes cannot adapt to the dynamic loads of the photovoltaic base. When the tilt angle of the solar panels exceeds 5°, the support bolts are prone to loosening, which not only reduces power generation efficiency but may also cause safety problems. The patent for a photovoltaic thermal storage heating device (CN202420652339.9) states that the fixed angle cannot capture the optimal incident angle, resulting in a loss of at least 10%-35% of the average daily power generation. In addition, existing technologies, including the above-mentioned methods, all have problems such as the inability to achieve energy storage, power outages at night or in severe weather, and the failure to correlate the thermal conductivity of the support structure with the temperature of the solar cells, leading to an increase in the actual operating temperature. Summary of the Invention

[0004] The purpose of this invention is to provide a slope photovoltaic system and its construction method, optimize the stability and drainage and waterproof performance of the slope photovoltaic structure, improve the photoelectric conversion efficiency of the slope photovoltaic system, and realize the system's energy storage function and temperature management.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is a slope photovoltaic system, comprising prestressed anchor cables, lattice beams, a concrete base, and photovoltaic units; characterized in that: The anchoring end of the prestressed anchor cable is anchored to the bedrock layer, and the tensioning end is fixed to the lattice beam and prestressed. The lattice beams are arranged in a honeycomb array on the slope surface, and each honeycomb unit has a fixed plate connected by a ball joint at its center. The concrete base is a hollow structure, cast on a lattice beam, including a triangular frame composed of vertical threaded steel bars, with a solid-state battery installed in the middle partition. The photovoltaic unit includes a photovoltaic panel mounted on a concrete base via a connecting base. The connecting base is connected to the front and rear ends of the photovoltaic panel via a front connecting rod and a rear connecting rod, respectively. The rear end is provided with an angle adjustment device with a sliding groove.

[0006] Furthermore, the lattice beam is cast with self-healing concrete, comprising 75-85 parts by weight of limestone, 8-12 parts by weight of loess, 1-3 parts by weight of sodium fluorosilicate, 1-3 parts by weight of iron ore, 1-2 parts by weight of microbial enzyme catalyst, 40-50 parts by weight of aggregate, and bacterial spores, wherein the mass ratio of bacterial spores to microbial enzyme catalyst is 1:2-4.

[0007] Furthermore, the aggregate is river sand, sea sand, or valley sand.

[0008] Furthermore, the angle adjustment device includes a rear fixing block fixed to the rear connecting rod, the rear fixing block being hinged to a sliding rod by a first fixing bolt, the end of the sliding rod being hinged to a rotating device; the top of the rotating device is provided with a sliding groove, and is connected to the photovoltaic panel by a second fixing bolt.

[0009] Furthermore, a piezoelectric ceramic promoter is installed inside the chute, and a photonic crystal sensor is arranged at the edge of the photovoltaic panel; the photonic crystal sensor is connected to the control unit, which calculates the solar azimuth angle by analyzing the diffraction spot pattern and drives the piezoelectric ceramic promoter to adjust the tilt angle of the photovoltaic panel.

[0010] Furthermore, a high-damping rubber pad with a Shore hardness of 50 and a thickness of 15mm is provided between the bottom of the concrete base and the lattice beam.

[0011] Furthermore, during the construction of the photovoltaic system on the slope, a slide rail is installed between the high-damping rubber pad layer and the concrete base. The slide rail is equipped with a spiral top screw with a graduated handle and a step accuracy of 0.5mm. A piezoelectric ceramic fiber array is arranged in the stress area of ​​the slide rail, and the installation deviation status is fed back through a three-color LED indicator.

[0012] Compared with existing technologies, the beneficial effects of this invention are as follows: In terms of slope protection, the prestressed anchor cables and honeycomb lattice beams work synergistically to optimize the internal stress distribution of the soil and rock mass by applying pretension. Combined with the excellent crack repair capability of self-healing concrete (crack repair rate of 80%–90%), slope deformation is effectively suppressed, and the long-term stability of the slope is significantly improved. In terms of photovoltaic power generation systems, photonic crystal sensors integrated into the edge of photovoltaic panels can sense the solar azimuth angle and light intensity in real time, and link with piezoelectric ceramic actuators to achieve high-precision automatic adjustment of the photovoltaic panel tilt angle (adjustment error less than 1°), effectively avoiding light energy loss caused by traditional fixed installations; by constructing a photoelectric conversion efficiency calculation model, temperature changes, solar incident angle deviation, and system losses are comprehensively compensated. When the efficiency deviation exceeds 5%, a maintenance mechanism is automatically triggered to ensure efficient and stable operation of the system. During construction, a bidirectional sliding rail and graduated spiral set screw structure are used to achieve precise displacement adjustment within a range of ±30mm (step accuracy 0.5mm). Combined with a piezoelectric ceramic fiber array and tri-color LED status indicators, single-point adjustment time does not exceed 3 minutes, significantly improving installation efficiency and operational reliability. When light transmittance is insufficient, the tilt angle can be increased to utilize rainwater for surface self-cleaning, dynamically balancing optical capture efficiency and system losses. Furthermore, the system integrates energy storage and heat dissipation functions; solid-state batteries are embedded in the concrete base, solving the problem of nighttime power supply and effectively controlling the operating temperature of the photovoltaic modules. A synergistic vibration reduction mechanism is formed by setting a high-damping rubber pad layer and an elastic locking nut, with the vibration transmission rate increasing only slightly to 0.16, significantly improving the structural stability and operational safety of the system under dynamic load environments. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the cross-section of the photovoltaic structure on the slope; Figure 2 It is a layout diagram of the slope lattice structure; Figure 3 This is a detailed diagram of the flexible connection structure of the slope grid; Figure 4This is a layout diagram of the photovoltaic structure base on the slope; Figure 5 This is a schematic diagram of the concrete base structure for a photovoltaic structure on a slope. Figure 6 This is a structural diagram of photovoltaic panels on a slope; Figure 7 This is a schematic diagram of the connecting components on the back of the photovoltaic panels on the slope. Figure 8 This is a schematic diagram of a photovoltaic panel structure on a slope. Figure 9 This is a comparison chart of the water absorption of the enzyme catalyst samples in this embodiment; Figure 10 This is a diagram of the photonic crystal sensor layout; 1. Photovoltaic panel; 2. Prestressed anchor cable; 3. Drainage ditch; 4. Slope body; 5. Lattice beam; 6. Upper disc; 7. Edge bolt; 8. Anchor head; 9. Fixing disc; 10. Front connecting rod; 11. Front fixing block; 12. Rear connecting rod; 13. Connecting base; 14. Rear fixing block; 15. First fixing bolt; 16. Sliding rod; 17. Sliding groove; 18. Piezoelectric ceramic promoter; 19. Rotating device; 20. Second fixing bolt; 21. Waterproof layer; 22. Front substrate; 23. Battery cell; 24. Rear substrate; 25. Bolt hole; 26. Ball joint; 27. Solid-state battery; 28. Concrete base; 29. ​​Threaded steel bar; 30. High-damping rubber pad; 31. Battery base; 32. Base top plate; 33. Base connecting bolt; 34. Photonic crystal sensor. Detailed Implementation

[0015] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0016] like Figures 1-8 This embodiment provides a slope photovoltaic system, which mainly includes prestressed anchor cables 2, concrete base 28, lattice beams 5, and photovoltaic units.

[0017] In some specific embodiments, the anchoring end of the prestressed anchor cable 2 is reliably anchored within the bedrock layer, while its tensioning end anchor head 8 is fixed to the lattice beam 5 and subjected to pre-tensioning force, thereby realizing a collaborative working mechanism between the prestressed anchor cable 2 and the sliding soil-rock medium. Through this structure, the prestressed anchor cable 2 can effectively regulate the stress redistribution state within the slope soil-rock medium, significantly improving the overall stability and anti-sliding capacity of the slope.

[0018] In some specific embodiments, the lattice beams 5 are arranged on the slope surface and poured with self-healing concrete. The self-healing concrete includes dormant bacterial spores and nutrients necessary for bacterial growth. These bacteria can be activated upon contact with corrosive rainwater that has penetrated the structure. The activated bacteria can generate limestone, thereby locally filling and repairing cracks in the concrete.

[0019] In some specific embodiments, the self-healing concrete comprises 75-85 parts by weight of limestone, 8-12 parts by weight of loess, 1-3 parts by weight of sodium fluorosilicate, 1-3 parts by weight of iron ore, 1-2 parts by weight of microbial enzyme catalyst, 40-50 parts by weight of aggregate, and dormant bacterial spores, wherein the mass ratio of the dormant bacterial spores to the microbial enzyme catalyst is 1:2-4. The self-healing concrete significantly extends the service life of concrete structures and effectively reduces their long-term maintenance costs.

[0020] In some specific embodiments, the aggregate includes natural sand, such as river sand, sea sand, or valley sand.

[0021] In some specific embodiments, the dormant bacterial spores are of Bacillus type, preserved in the form of spores (bacterial dormant bodies), preserved by freeze-drying, using 10% sterile glycerol as the protectant, at a storage temperature of -80 degrees Celsius, and resuscitation by rapid thawing in water at 37 degrees Celsius with a concentration of 7.8 × 10⁻⁶. 8 cfu / cm³, microbial enzyme catalysts such as polyethylene glycol, polyvinyl alcohol derivatives, phytic acid, caramel, carboxymethyl cellulose, phenylethanol, etc., can be used, with a concentration of 3%–6%. Nutrients refer to microbial enzyme catalysts.

[0022] The bacterial strain used in this embodiment is a compound Bacillus preparation, trade name: Wuhan Fengtian Biotechnology Bacillus subtilis type III; any Bacillus strains or compound bacterial agents with the same or similar functions are considered to be within the scope of disclosure of this embodiment.

[0023] Example 1

[0024] The other components of self-healing concrete are 80 parts by weight of limestone, 10 parts by weight of loess, 2 parts by weight of sodium fluorosilicate, 2 parts by weight of iron ore, 1.5 parts by weight of microbial enzyme catalyst, and 45 parts by weight of aggregate; bacterial spores are added according to a mass ratio of 1:3 to microbial enzyme catalyst. The compressive strength recovery rate reaches 80%-90%, and the compressive strength is 24MPa-26MPa.

[0025] Comparative Example 1 No bacterial spores or microbial enzymes were introduced; otherwise, it was the same as in Example 1. The compressive strength recovery rate reached 60%-75%, and the compressive strength was 21-24 MPa.

[0026] like Figure 9 As shown, the mass ratio of bacterial spores to microbial enzyme catalysts used in the self-healing concrete of this application is 1:3. Compared with other ratios, the calcium carbonate crystals generated under this ratio have a 10%–20% smaller particle size and a more uniform and dense crystal distribution, significantly improving the compactness of crack repair; the recovery rate of concrete compressive strength is increased by 15%–20%. Simultaneously, the lower viscosity of the mixture under this ratio facilitates the implementation of microencapsulation processes such as spray drying or microencapsulation, helping to reduce energy consumption during processing. Furthermore, in the weakly alkaline environment (pH 9–11) characteristic of cement-based materials, the bacterial spores can still maintain a survival rate of over 90%, demonstrating excellent environmental adaptability and biological activity stability.

[0027] Example 2

[0028] The other components of self-healing concrete are 85 parts by weight of limestone, 12 parts by weight of loess, 3 parts by weight of sodium fluorosilicate, 3 parts by weight of iron ore, 2 parts by weight of microbial enzyme catalyst, and 50 parts by weight of aggregate; bacterial spores are added at a mass ratio of 1:4 to microbial enzyme catalyst. The compressive strength recovery rate reaches 78%-88%, and the compressive strength is 21MPa-24MPa.

[0029] Example 3

[0030] The other components of self-healing concrete are 75 parts by weight of limestone, 8 parts by weight of loess, 1 part by weight of sodium fluorosilicate, 2 parts by weight of iron ore, 1 part by weight of microbial enzyme catalyst, and 40 parts by weight of aggregate; bacterial spores are added at a mass ratio of 1:2 to microbial enzyme catalyst. The compressive strength recovery rate reaches 77%-87%, and the compressive strength is 22MPa-25MPa.

[0031] In some specific implementations, such as Figures 2 to 3 As shown, the lattice beams 5 are arranged in a honeycomb array. Each lattice beam 5 unit consists of three equilateral triangular frame structures and three crossbeams forming a regular hexagonal geometric configuration. A fixed plate 9 is set at the center of the lattice beam 5. The fixed plate 9 is hinged to the triangular frame through a ball joint 26 to accommodate local displacement and transfer loads. The fixed plate 9 has a through hole at its center for anchoring the tensioning end anchor head 8 of the prestressed anchor cable 2. Bolt holes 25 are arranged around the perimeter of the fixed plate 9. The fixed plate 9 is fixed to the surface of the slope rock and soil through edge bolts 7 to achieve stable support of the overall structure. An upper disc 6 is set on the fixed plate 9 and connected to the fixed plate 9 through edge bolts 7 to prevent rainwater erosion and corrosion failure of the ball joint 26.

[0032] In some specific implementation methods, such as Figure 4-5A concrete base 28 is cast and installed on each lattice beam unit 5. The concrete base 28 adopts a triangular prism-shaped cavity structure design, including a frame and a base top plate 32. The main frame is composed of three vertical threaded steel bars 29, which are arranged in a triangle within the cross-section of the base to enhance its structural strength and stability. The threaded steel bars 29 are used to connect the photovoltaic panel 1 support upwards. A partition is provided in the middle of the threaded steel bar 29 frame. This partition not only serves as reinforcement but also as an installation platform for fixing the solid-state battery 27. The solid-state battery 27 is securely installed on the partition via a battery base 31, ensuring its stability and safety during use. The solid-state battery 27 is electrically connected to the photovoltaic panel 1 for storing photovoltaic energy. This embodiment ensures the integrity of the structure while providing conditions for the integration of electrical equipment.

[0033] In some possible implementations, to address the problem that the prestressed anchor cable 2 structure has insufficient shear resistance and is difficult to effectively resist complex shear stress due to structural limitations, this implementation uses self-healing concrete material with the same formula as the lattice beam 5 to pour the concrete base 28. This not only improves the overall shear strength of the support system but also gives it a self-healing function for cracks. The concrete base 28 is formed by drilling and casting after the prestressed anchor cables 2 are installed. Its planar side length is 20 to 40 cm and its depth is 0.5 to 1 m. Through the synergistic effect with the prestressed anchor cables 2, it significantly enhances the stability of the foundation and effectively prevents damage to the lattice beam 5 caused by excessive tensile and compressive stress due to external loads after the photovoltaic panel 1 is installed.

[0034] In some specific embodiments, a high-damping rubber pad 30 is provided at the connection interface between the lattice beam 5 unit and the concrete base 28. The pad has a Shore hardness of 50, a thickness of 15mm, and is fastened by an elastic locking nut. The flexible deformation of the high-damping rubber pad 30 absorbs and dissipates vibration energy, effectively suppressing structural resonance. At the same time, the elastic locking nut allows for slight displacement while providing the necessary preload, further enhancing the overall damping performance and stability.

[0035] In some specific embodiments, a photovoltaic unit is provided on the top of the concrete base 28; the photovoltaic unit includes a photovoltaic panel 1 support and a photovoltaic panel 1 installed thereon. The photovoltaic panel 1 support is composed of a connecting base 13, a front connecting rod 10, and a rear connecting rod 12. The connecting base 13 has a triangular structure, and each vertex end is fixed to the threaded steel bar 29 inside the concrete base 28 by a base connecting bolt 33, so as to achieve a reliable connection with the main structure. Each end of the connecting base 13 is connected to the photovoltaic panel 1 by two front connecting rods 10 and one rear connecting rod 12: the front connecting rod 10 is connected to the front end of the photovoltaic panel 1 by a front fixing block 11; the rear connecting rod 12 is provided with an angle adjustment device at the connection point with the rear end of the photovoltaic panel 1, which is used to adjust the tilt angle of the photovoltaic panel 1 according to the solar incident angle to optimize the light energy reception efficiency.

[0036] like Figure 6 , Figure 7 As shown, the angle adjustment device includes a rear fixing block 14. One end of the rear fixing block 14 is welded and fixed to the rear connecting rod 12 to form a stable support connection; the other end is hinged to a sliding rod 16 via a first fixing bolt 15, enabling the sliding rod 16 to be rotatably connected. A rotating device 19 is provided at the other end of the sliding rod 16. The bottom end of the rotating device 19 is hinged to the sliding rod 16. A groove 17 extending along the length direction is provided at the top of the rotating device 19 to accommodate the adjustment displacement of the photovoltaic panel 1's mounting end. The rotating device 19 is connected to the groove 17 via a second fixing bolt 20. The top end of the groove 17 is fixed to the photovoltaic panel 1. By tightening or loosening the second fixing bolt 20 and adjusting its position along the groove 17, the rotating device 19 can continuously adjust the mounting angle of the photovoltaic panel 1. After adjustment, the bolt is tightened to fix the structure and ensure operational stability.

[0037] In some specific embodiments, a piezoelectric ceramic promoter 18 is provided inside the chute 17; such as Figure 10 A crystal sensor array consisting of photonic crystal sensors 34 is set at the edge of the photovoltaic panel 1. The crystal sensor array is used to monitor the ambient light intensity and identify the solar azimuth angle by analyzing the diffraction pattern generated by the incident light. The sensor sends the collected light intensity and azimuth data to the control unit. The control unit runs a built-in algorithm to process the data and calculates the target adjustment angle required to make the front of the photovoltaic panel 1 perpendicular to the sun. The control unit then sends a command to the micro piezoelectric ceramic actuator to drive it to perform precise displacement, thereby adjusting the photovoltaic panel 1 to the target angle and realizing fully automatic solar tracking and angle optimization.

[0038] In some specific embodiments, the photovoltaic panel 1 consists of a waterproof layer 21, a front substrate 22, solar cells 23, and a rear substrate 24 from the outside in. The waterproof layer 21 is a transparent metal oxide layer, which prevents water vapor corrosion and ensures the normal operation of the internal photovoltaic modules. The front substrate 22 and the rear substrate 24 are glass sheets, which provide water vapor isolation and allow light transmission for power generation. The solar cells 23 are crystalline silicon solar cells, which have high photoelectric conversion efficiency. The base is designed as a semi-enclosed box structure, replacing the solid base design. The inside of the box is divided into multiple 50mm×50mm honeycomb units, and 10 layers of solid-state batteries 27 (single layer thickness 0.5mm) are stacked in each unit. Polyimide spacers (25μm thick, temperature resistant to 400℃) are used to achieve interlayer insulation. Expanded graphite composite phase change material is injected into the gaps between the battery units to improve the thermal conductivity and enhance heat dissipation performance.

[0039] This embodiment also relates to a precision adjustment system and construction method for installing a concrete base 28. Addressing potential installation deviations between the lattice beams 5 and the concrete base 28, a precise positioning mechanism, including a bidirectional slide rail structure, is embedded between the bottom of the concrete base 28 and the high-damping rubber pad 30 during construction. The slide rail is made of stainless steel, 50mm wide and 200mm long, and coated with a polytetrafluoroethylene (PTFE) wear-resistant layer, reducing its friction coefficient to below 0.05, thus significantly reducing adjustment resistance. Gravity scales with an accuracy of 1mm are provided on both sides of the slide rail, supporting lateral displacement adjustment within a range of ±30mm, sufficient to cover common spacing deviations during construction.

[0040] In some specific implementations, the adjustment mechanism uses a combination of an elastic locking nut and a spiral set screw for linkage with the guide rail; a spiral set screw with a graduated handle is installed on the slide rail, and rotating the handle drives the base to move directionally along the slide rail, with a step adjustment accuracy of up to 0.5mm. The preload is adjustable within a range of ±20%, ensuring both reliable fastening and fine-tuning functionality.

[0041] Furthermore, piezoelectric ceramic fiber array sensors are installed in the key stress areas of the slide rail. Based on the piezoelectric effect, this array converts mechanical deformation into an electrical signal output, thereby achieving mechanical feedback. The system determines the deviation state based on the strength of the piezoelectric signal and provides visual prompts via a three-color LED indicator: a green light illuminates when the deviation is less than 2mm, indicating that the spacing is matched; a yellow light illuminates when the deviation is between 2-5mm, indicating that fine-tuning is needed; and a red light illuminates when the deviation exceeds 5mm, indicating that the adjustment range is exceeded and other compensation measures need to be activated.

[0042] This implementation method significantly improves construction efficiency and precision, enabling single-person operation and single-point adjustment in no more than 3 minutes, a substantial reduction compared to the 15 minutes required by traditional methods. Furthermore, the electrical energy generated by the piezoelectric ceramic fiber array can directly power the LED indicator lights, eliminating the need for an external power source.

[0043] The various embodiments in this specification are described in a related manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0044] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention are included within the scope of protection of the present invention.

Claims

1. A slope photovoltaic system, comprising prestressed anchor cables (2), lattice beams (5), a concrete base (28), and photovoltaic units; characterized in that: The anchoring end of the prestressed anchor cable (2) is anchored to the bedrock layer, and the tensioning end is fixed to the lattice beam (5) and prestressed. The lattice beams (5) are arranged in a honeycomb array on the slope surface, and each honeycomb unit has a fixed plate (9) connected by a ball joint (26) at its center. The fixed plate (9) has a through hole in the center for anchoring the tension end anchor head (8) of the prestressed anchor cable (2); the fixed plate (9) has bolt holes (25) around its periphery, and the fixed plate (9) is fixed to the surface of the slope rock and soil by means of edge bolts (7); the fixed plate (9) is provided with an upper disc (6), which is connected to the fixed plate (9) by means of edge bolts (7); The concrete base (28) is a hollow structure, cast on the lattice beam (5), including a triangular frame composed of vertical threaded steel bars (29), with a solid battery (27) installed in the middle partition. The photovoltaic unit includes a photovoltaic panel (1) installed on a concrete base (28) via a connecting base (13). The connecting base (13) is connected to the front end and the rear end of the photovoltaic panel (1) via a front connecting rod (10) and a rear connecting rod (12), respectively. The rear end is provided with an angle adjustment device with a sliding groove (17).

2. The slope photovoltaic system according to claim 1, characterized in that: The lattice beam (5) is made of self-healing concrete, which includes 75-85 parts by mass of limestone, 8-12 parts by mass of loess, 1-3 parts by mass of sodium fluorosilicate, 1-3 parts by mass of iron ore, 1-2 parts by mass of microbial enzyme catalyst, 40-50 parts by mass of aggregate, and bacterial spores. The mass ratio of bacterial spores to microbial enzyme catalyst is 1:2-4.

3. The slope photovoltaic system according to claim 2, characterized in that: The aggregate is river sand, sea sand, or valley sand.

4. The slope photovoltaic system according to claim 1, characterized in that: The angle adjustment device includes a rear fixing block (14) fixed to the rear connecting rod (12). The rear fixing block (14) is hinged to a slide rod (16) by a first fixing bolt (15). The end of the slide rod (16) is hinged to a rotating device (19). The top of the rotating device (19) is provided with a sliding groove (17) and is connected to the photovoltaic panel (1) by a second fixing bolt (20).

5. The slope photovoltaic system according to claim 4, characterized in that: The groove (17) is equipped with a piezoelectric ceramic promoter (18), and a photonic crystal sensor (34) is arranged on the edge of the photovoltaic panel (1). The photonic crystal sensor (34) is connected to the control unit, and calculates the solar azimuth angle by analyzing the diffraction spot pattern and drives the piezoelectric ceramic promoter (18) to adjust the tilt angle of the photovoltaic panel (1).

6. The slope photovoltaic system according to claim 1, characterized in that: A high-damping rubber pad (30) with a Shore hardness of 50 and a thickness of 15mm is provided between the bottom of the concrete base (28) and the lattice beam (5).

7. The slope photovoltaic system according to claim 6, characterized in that: During the construction of the photovoltaic system on the slope, a slide rail is set between the high-damping rubber pad layer (30) and the concrete base (28). The slide rail is equipped with a spiral top screw with a graduated handle and a step accuracy of 0.5mm. The force-bearing area of ​​the slide rail is arranged with a piezoelectric ceramic fiber array, and the installation deviation status is fed back through a three-color LED indicator.

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