Automatic adjusting valley and expanding capacity photovoltaic power generation device

Abstract

The utility model provides a kind of automatic valley expansion type photovoltaic power generation device, belong to photovoltaic power generation technical field, to solve the problem that existing fixed adjustable photovoltaic module support needs manual adjustment and cannot realize capacity expansion valley problem.The device includes: multiple precast piles;Fixed support on precast pile, first photovoltaic module with inclination angle is arranged thereon;First movable support is movably connected with fixed support and located at the front side of fixed support, second photovoltaic module with inclination angle is arranged thereon;Second movable support is located below fixed support, third photovoltaic module is arranged thereon;Support mechanism is connected with fixed support, comprising: first electric cylinder, connected with fixed support;Stop block, connected with the end of push-pull rod of first electric cylinder;Movable rod, one end is connected with stop block, and the other end is slidably connected with first movable support;Support rod is connected with movable rod, and support rod is connected with second movable support.The device automatically adjusts angle and capacity expansion valley.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic power generation technology, and in particular to an automatic valley-shaving capacity expansion photovoltaic power generation device. Background Technology

[0002] Solar energy, as an important renewable energy source, is primarily utilized through photovoltaic (PV) power generation, which efficiently converts solar radiation into electricity, offering advantages such as zero emissions, abundant resources, and wide distribution. Currently, most PV power plants, especially in northern regions, employ fixed support structures to mount PV modules. While these fixed support structures are simple to install and relatively inexpensive, their main drawback is the inability to adjust the angle according to changes in solar altitude and sunshine duration, resulting in significant peaks and troughs in the system's daily power generation curve. During seasons with significant variations in sunshine conditions, fixed-support PV systems are also prone to power loss, particularly during peak-valley load transitions, where the system's power generation cannot meet the dynamic adjustment needs of the grid, reducing the power generation efficiency and economic benefits of the PV power plant. Furthermore, fixed-support PV systems struggle to cope with seasonal changes in sunshine angle, leading to significant differences in PV power generation between summer and winter, further limiting the stability of the PV power plant's annual power generation and optimizing its profitability. As the proportion of PV power generation in the energy structure increases, achieving flexible adjustment of the power generation array while ensuring the system's structural safety and stability has become a crucial issue for improving the economic efficiency and application value of PV systems.

[0003] Existing technology uses fixed adjustable photovoltaic (PV) brackets to improve power generation efficiency. The bracket tilt angle is typically designed between approximately 15° and 65°, with manual adjustment increments in 10° increments. This adjustment ensures that sunlight is incident on the PV array as perpendicularly as possible, maximizing power generation. It also allows the solar panels to follow the direction of sunlight, thus better absorbing light and improving photoelectric conversion efficiency. Compared to fixed installations, fixed adjustable PV brackets significantly improve power generation efficiency.

[0004] However, the existing fixed adjustable supports require manual adjustment, which is done four times a year, in order to increase power generation. Furthermore, the fixed adjustable supports have a fixed installation capacity and cannot achieve the function of increasing capacity and adjusting off-peak hours. Utility Model Content

[0005] The technical problem this invention aims to solve is that existing fixed adjustable photovoltaic module supports require manual adjustment and cannot achieve capacity expansion and valley-level regulation. It provides an automatic valley-level regulation and capacity expansion photovoltaic power generation device. This device has a reasonable structure and can automatically and flexibly adjust the angle of photovoltaic modules, optimize peak and valley power generation, and compensate for seasonal power consumption. It can not only effectively improve the power generation fluctuations and seasonal losses in fixed-support photovoltaic systems, but also enhance the overall power generation efficiency and economic benefits of the photovoltaic system, thus possessing significant technical importance and broad practical application value.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows: An automatic valley-shaving capacity expansion photovoltaic power generation device includes: Multiple precast piles; A fixed bracket located on the precast pile, wherein a first photovoltaic module with an inclined angle is mounted on the fixed bracket; A first movable bracket is movably connected to the fixed bracket and located in front of the fixed bracket, and a second photovoltaic module with an inclined angle is disposed on the first movable bracket; A second movable bracket is located below the fixed bracket, and a third photovoltaic module is mounted on the second movable bracket; The support mechanism connected to the fixed bracket includes: The first electric cylinder is connected to the fixed bracket; The stop block is connected to the end of the push-pull rod of the first electric cylinder; The movable rod has one end connected to the stop block and the other end slidably connected to the first movable bracket; A support rod connected to the movable rod, the support rod being connected to the second movable bracket.

[0007] Optionally, the support rod is connected to the movable rod via a fixed plate.

[0008] Optionally, the support mechanism further includes a support rail connected to the fixed bracket, wherein the movable rod is located within the support rail.

[0009] Optionally, the movable rod is slidably connected to the first movable bracket via a sliding wheel; The sliding wheel includes a connecting plate, a clamping plate, and a roller. One end of the connecting plate is connected to the movable rod, and the other end is connected to the clamping plate. The roller is located inside the clamping plate. The clamping plate engages with the first movable bracket, and the roller is tactilely connected to the first movable bracket.

[0010] Optionally, the fixing bracket includes: Multiple vertical support components are fixedly connected to multiple precast piles in a one-to-one correspondence. The upper end of each vertical support component is inclined. Each vertical support component is connected to the first movable bracket, the first electric cylinder, and the support rail. The first support strip located at the upper end of the vertical support assembly; Multiple first steel strand cable locking mechanisms are arranged in parallel and span across the upper ends of multiple first support purlins. The first photovoltaic module is fixed on the first steel strand cable locking mechanism.

[0011] Optionally, the vertical support assembly includes: Inclined purlins, first vertical purlins, second vertical purlins, and third vertical purlins located on the same plane; The upper height of the inclined purlin and the first vertical purlin gradually decreases to form an inclined angle. The first supporting purlin is connected to the upper ends of the inclined purlin and the first vertical purlin. The first electric cylinder and the supporting rail are fixed on the inclined purlin and the first vertical purlin. The second and third vertical purlins are located on both sides of the precast pile. The inclined purlin, the first vertical purlin, the second vertical purlin, and the third vertical purlin are fixed to the precast pile by clamps; the lower end of the first movable bracket is movably connected to the clamps.

[0012] Optionally, the first movable support includes: The lower ends of the first and second movable purlins are respectively movably connected to the clamp via triangular connectors; The second support strip connects the upper ends of the first and second movable strips; Multiple second steel strand cable locking mechanisms are arranged in parallel and span across the upper ends of multiple second support purlins, and the second photovoltaic module is fixed on the second steel strand cable locking mechanism; The card plate engages with the first movable slat, and the roller is in rolling connection with the first movable slat.

[0013] Optionally, the second movable support includes: The first transverse purlin is connected at both ends to the movable rods in the two support mechanisms; The second transverse purlin, which is parallel to the first transverse purlin, is connected at both ends to the movable rods in the two support mechanisms. An angle adjustment mechanism is provided on the first transverse purlin; Hinge components are provided on the second transverse purlin; One end of the third photovoltaic module is connected to the angle adjustment mechanism, and the other end is connected to the hinge component.

[0014] Optionally, the angle adjustment mechanism includes: The second electric cylinder is connected to the first transverse purlin. A support plate located above the second electric cylinder, the first end of which is movably connected to the second electric cylinder vertically; The movable plate is movably connected to the second end of the support plate; the third photovoltaic module is connected to the movable plate.

[0015] Optionally, the movable plate is movably connected to the second end of the support plate via a connecting shaft.

[0016] The above-described solution of this utility model has at least the following beneficial effects: (1) High space utilization and increased power generation: The first photovoltaic module on the fixed support, the second photovoltaic module on the first movable support, and the third photovoltaic module on the second movable support make full use of the space below and in front of the traditional fixed photovoltaic system. The support mechanism can flexibly adjust the position and tilt angle of the photovoltaic modules to increase the overall power generation of the photovoltaic power generation system.

[0017] (2) High structural safety: The device has a reasonable structure and the components are easy to construct and maintain. It uses flexible steel strand cable support, which not only disperses the concentrated load of the device, but also reduces the weight of the fixed support, thus ensuring the safety of the photovoltaic power generation system.

[0018] (3) Power generation curve optimization: By moving the front photovoltaic modules and adjusting the tilt angle of the expanded photovoltaic modules below, the peak and valley power generation characteristics and seasonal power generation curves are effectively improved, so as to achieve a balanced increase in power generation and improve the overall economic benefits of the photovoltaic power station.

[0019] (4) Wide range of applications: The device has a flexible structural design and is suitable for various scenarios of fixed photovoltaic systems. It can be automatically adjusted according to land conditions and peak and valley demand of the power grid, providing technical support for the seasonal and peak and valley power generation optimization of photovoltaic power plants. Attached Figure Description

[0020] Figure 1 This is a condensed perspective view of an automatic valley-shaving capacity-expanding photovoltaic power generation system device according to this utility model; Figure 2 This is an unfolded perspective view of an automatic valley-shaving capacity-expanding photovoltaic power generation system device according to this utility model; Figure 3 This is a contracted side view of the automatic valley-shaving capacity-expanding photovoltaic power generation system device of this utility model; Figure 4 This is an unfolded side view of the automatic valley-shaving capacity expansion photovoltaic power generation system device of this utility model; Figure 5 This is a side view of the unfolded tilt angle adjustment of the automatic valley-shaving capacity expansion photovoltaic power generation system device of this utility model; Figure 6 This is a schematic diagram of the retractable support of the automatic valley-shaving capacity-expanding photovoltaic power generation system device of this utility model; Figure 7 This is a schematic diagram of the unfolded support frame of the automatic valley-shaving capacity expansion photovoltaic power generation system device of this utility model; Figure 8 yes Figure 5 Enlarged view of A in the middle; Figure 9 yes Figure 7Enlarged view of B in the middle; Figure 10 yes Figure 7 Enlarged view of C; Figure 11 yes Figure 7 Enlarged view of D; Figure 12 This is a schematic diagram of the pulley structure.

[0021] Figure label: 1-Precast pile; 2-Support mechanism; 201-First electric cylinder; 202-Stop block; 203-Modible rod; 204-Support rod; 205-Fixing plate; 206-Support rail; 207-Sliding wheel; 2071-Connecting plate; 2072-Clamping plate; 2073-Roller; 3-First photovoltaic module; 4-Second photovoltaic module; 5-Third photovoltaic module; 6-First supporting purlin; 7-First steel strand cable locking mechanism; 8-Inclined purlin; 9-First vertical purlin; 10-Second vertical purlin; 11- 12-Clamping hoop; 13-First movable purlin; 14-Second movable purlin; 15-Triangular connector; 16-Second supporting purlin; 17-Second steel strand cable locking mechanism; 18-First transverse purlin; 19-Second transverse purlin; 20-Hinge component; 21-Second electric cylinder; 22-Support plate; 23-Modible plate; 24-Connecting shaft; 25-Crossbeam; 26-Fastening edge pressure block component; 27-Fastening middle pressure block component; 28-Fastening bolt; 29-Purlin support; 30-Bottom clamping hoop. Detailed Implementation

[0022] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0023] like Figures 1 to 7 As shown, an embodiment of this utility model proposes an automatic valley-shaving capacity expansion photovoltaic power generation device, comprising: Multiple precast piles 1; A fixed bracket is located on the precast pile 1, and a first photovoltaic module 3 with an inclined angle is installed on the fixed bracket; A first movable bracket is movably connected to the fixed bracket and located in front of the fixed bracket, and a second photovoltaic module 4 with an inclined angle is provided on the first movable bracket; The second movable bracket is located below the fixed bracket, and the third photovoltaic module 5 is mounted on the second movable bracket; The support mechanism 2 connected to the fixed bracket, such as Figure 11 As shown, the support mechanism 2 includes: The first electric cylinder 201 is connected to the fixed bracket; The stop block 202 is connected to the end of the push-pull rod of the first electric cylinder 201; The movable rod 203 is connected at one end to the stop block 202 and at the other end to the first movable bracket; A support rod 204 is connected to the movable rod 203, and the support rod 204 is connected to the second movable bracket.

[0024] When the photovoltaic power generation system is in a peak-valley period, the displacement of the first electric cylinder 201 in the support mechanism 2 moves the second photovoltaic module 4, which is fixed above the front side of the bracket, to the front side of the fixed bracket. At the same time, the third photovoltaic module 5 (the third photovoltaic module 5 on the second movable bracket), which is fixed to the plane formed by the stop block 202, the movable rod 203, and the support rod 204, moves from below the two rows of photovoltaic modules above to a position slightly below the original front second photovoltaic module 4, in order to compensate for the low power generation of the photovoltaic power generation system during peak-valley periods.

[0025] A row of first photovoltaic modules 3 with a fixed tilt angle is arranged on the upper rear side of the overall support frame, while a row of second photovoltaic modules 4 with an adjustable tilt angle, which can be flexibly moved to the front of the fixed support frame, is arranged on the upper front side of the support frame to adjust the power generation of the photovoltaic power generation system during peak and valley periods. Below the two rows of photovoltaic modules, a row of third photovoltaic modules 5 with a finely adjustable tilt angle is arranged. When the second photovoltaic modules 4 on the upper front side move to the front of the fixed support frame, the third photovoltaic modules 5 below move to a position slightly below the previous position of the second photovoltaic modules 4 on the front side of the support frame, automatically filling the empty space, thereby expanding the capacity of the photovoltaic power generation system and increasing the overall power generation.

[0026] For example, the support rod 204 is connected to the movable rod 203 via a fixing piece 205.

[0027] To ensure the stability of the movable rod 203, the support mechanism 2 further includes a support rail 206 connected to the fixed bracket, wherein the movable rod 203 is located within the support rail 206 and can reciprocate within the support rail 206.

[0028] For example, the movable rod 203 is slidably connected to the first movable bracket via a sliding wheel 207; like Figure 12As shown, the sliding wheel 207 includes a connecting plate 2071, a clamping plate 2072, and a roller 2073. One end of the connecting plate 2071 is connected to the movable rod 203, and the other end is connected to the clamping plate 2072. The roller 2073 is located inside the clamping plate 2072, which engages with the first movable bracket. The roller 2073 is in a rolling connection with the first movable bracket. When the movable rod 203 moves, it can drive the connecting plate 2071 to move, thereby causing the roller 2073 to roll on the first movable bracket and push the first movable bracket forward and downward, thus changing the tilt angle of the second photovoltaic module 4.

[0029] For example, the fixing bracket includes: Multiple vertical support components are fixedly connected to multiple precast piles 1 in a one-to-one correspondence. The upper end of each vertical support component is inclined. The vertical support component is connected to the first movable bracket, the first electric cylinder 201 and the support rail 206. The first support strip 6 is located at the upper end of the vertical support assembly; Multiple first steel strand cable locking mechanisms 7 are arranged in parallel and span across the upper ends of multiple first support purlins 6. The first photovoltaic module 3 is fixed on the first steel strand cable locking mechanism 7.

[0030] The first photovoltaic module 3 is fixed to the first steel strand cable zipper mechanism 7 by fastening the side pressure block component 26 and the middle pressure block component 27; the first steel strand cable zipper mechanism 7 is connected to the first support strips 6 on both sides by fastening bolts 28.

[0031] For example, the vertical support component includes: Inclined purlin 8, first vertical purlin 9, second vertical purlin 10, and third vertical purlin 11 located on the same plane; The upper ends of the inclined purlin 8 and the first vertical purlin 9 gradually decrease in height to form an inclined angle. The first supporting purlin 6 is connected to the upper ends of the inclined purlin 8 and the first vertical purlin 9. The first electric cylinder 201 and the supporting rail 206 are fixed on the inclined purlin 8 and the first vertical purlin 9. The second vertical purlin 10 and the third vertical purlin 11 are located on both sides of the precast pile 1. The inclined purlin 8, the first vertical purlin 9, the second vertical purlin 10, and the third vertical purlin 11 are fixed to the precast pile 1 by clamp 1; the lower end of the first movable bracket is movably connected to clamp 12. Clamp 1 is a pair of clamps.

[0032] To improve the stability of the fixed support, a crossbeam 25 is provided at the upper end of the precast pile 1. The crossbeam 25 fixes the inclined purlin 8, the first vertical purlin 9, the second vertical purlin 10, and the third vertical purlin 11 on a plane.

[0033] The precast pile 1 is provided with a bottom clamp 30 at its lower part to further improve the stability of the support.

[0034] For example, the first movable support includes: The lower ends of the first movable purlin 13 and the second movable purlin 14 are respectively movably connected to the clamp 12 via triangular connectors 15; The second support strip 16 connects the upper ends of the first movable strip 13 and the second movable strip 14; Multiple second steel strand cable locking mechanisms 17 are arranged in parallel and span across the upper ends of multiple second support purlins 16, and the second photovoltaic module 4 is fixed on the second steel strand cable locking mechanism 17; The card plate 2072 engages with the first movable slat 13, and the roller 2073 is rotatably connected to the first movable slat 13.

[0035] When the movable rod 203 of the support mechanism 2 moves, it drives the roller 2073 to roll on the first movable slat 13 and pushes the first movable slat 13 and the second movable slat 14 to move synchronously, thereby adjusting the angle and position of the second photovoltaic module 4.

[0036] The second photovoltaic module 4 is fixed to the second steel strand cable zipper mechanism 17 by fastening the side pressure block component 26 and the middle pressure block component 27; the second steel strand cable zipper mechanism 17 is connected to the second support strips 16 on both sides by fastening bolts 28.

[0037] For example, such as Figures 8 to 10 As shown, the second movable support includes: The first transverse purlin 18 is connected at both ends to the movable rods 203 in the two support mechanisms 2 respectively; The second transverse purlin 19, which is parallel to the first transverse purlin 18, is connected at both ends to the movable rods 203 in the two support mechanisms 2; the two ends of the first transverse purlin 18 and the second transverse purlin 19 are connected to the movable rods 203 through purlin supports 29 respectively. An angle adjustment mechanism is provided on the first transverse purlin 18; Hinge member 20 is provided on the second transverse purlin 19; One end of the third photovoltaic module 5 is connected to the angle adjustment mechanism, and the other end is connected to the hinge component 20.

[0038] Below the two rows of photovoltaic modules, a third photovoltaic module 5 with a finely adjustable tilt angle is added. When the second photovoltaic module 4 on the front side is adjusted to the front of the fixed bracket, the third photovoltaic module 5 below the two rows of photovoltaic modules is used to finely adjust the tilt angle of the photovoltaic modules through the angle adjustment mechanism. While supplementing the low power generation of the photovoltaic power generation system during peak and valley periods, it can effectively improve the seasonal power loss of the photovoltaic power generation system.

[0039] Specifically, the angle adjustment mechanism includes: The second electric cylinder 21 is connected to the first transverse purlin 18; A support plate 22 is located above the second electric cylinder 21, and the first end of the support plate 22 is movably connected to the second electric cylinder 21. The movable plate 23 is movably connected to the second end of the support plate 22; the third photovoltaic module 5 is connected to the movable plate 23.

[0040] When the support mechanism 2 moves the third photovoltaic module 5 to a position slightly below the original front second photovoltaic module 4, the second electric cylinder 21 pushes the support plate 22 upward, causing the movable plate 23 to move in a plane, thereby finely adjusting the tilt angle of the third photovoltaic module 5.

[0041] For example, the movable plate 23 is movably connected to the second end of the support plate 22 via a connecting shaft 24.

[0042] The combined movement of the third photovoltaic module 5, the support mechanism 2, and the angle adjustment mechanism can automatically adjust the power generation array structure during the peak-valley switching period of the power grid load, realizing the dual functions of "valley regulation and capacity expansion", effectively reducing the difference in peak and valley sunshine periods, improving the peak-valley characteristics of the power generation curve and seasonal power generation fluctuations, and providing technical support for the economic efficiency and power generation efficiency of the photovoltaic system.

[0043] This invention relates to an automatic valley-shaving capacity expansion photovoltaic power generation system, designed to address the shortcomings of existing fixed-tilt photovoltaic power generation systems in terms of low peak-valley power generation and seasonal power loss. Existing fixed photovoltaic support systems often exhibit significant peaks and troughs in their daily power generation curves, particularly during peak-valley periods and seasonal variations in solar radiation, resulting in substantial power loss and reduced overall economic efficiency of the photovoltaic power plant. This invention's automatic valley-shaving capacity expansion photovoltaic power generation system features a rational structure and automatic, flexible adjustment capabilities, increasing power generation during peak-valley periods and mitigating seasonal power loss. By fully utilizing the space beneath and in front of the fixed photovoltaic system, the system achieves automatic and flexible adjustment of the photovoltaic modules. Combined with flexible steel strand cable support, it reduces the load on the support structure, optimizes the daily and seasonal power generation curves of the photovoltaic system, significantly increases power generation during off-peak periods, and mitigates seasonal power loss, providing a practical and feasible technical solution for improving the overall economic benefits of photovoltaic power plants.

[0044] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. An automatic valley-shaving capacity expansion photovoltaic power generation device, characterized in that, include: Multiple precast piles (1); A fixed bracket located on the precast pile (1), on which a first photovoltaic module (3) with an inclined angle is installed. A first movable bracket is movably connected to the fixed bracket and located in front of the fixed bracket, and a second photovoltaic module (4) with an inclined angle is provided on the first movable bracket. A second movable bracket located below the fixed bracket, on which a third photovoltaic module (5) is mounted; The support mechanism (2) connected to the fixed bracket includes: The first electric cylinder (201) is connected to the fixed bracket; The stop block (202) is connected to the end of the push-pull rod of the first electric cylinder (201); The movable rod (203) is connected at one end to the stop block (202) and at the other end to the first movable bracket; A support rod (204) is connected to the movable rod (203), and the support rod (204) is connected to the second movable bracket.

2. The automatic valley-shaving capacity expansion photovoltaic power generation device according to claim 1, characterized in that, The support rod (204) is connected to the movable rod (203) via a fixing plate (205).

3. The automatic valley-shaving capacity expansion photovoltaic power generation device according to claim 2, characterized in that, The support mechanism (2) further includes a support rail (206) connected to the fixed bracket, and the movable rod (203) is located within the support rail (206).

4. The automatic valley-shaving capacity expansion photovoltaic power generation device according to claim 3, characterized in that, The movable rod (203) is slidably connected to the first movable bracket via a sliding wheel (207); The sliding wheel (207) includes a connecting plate (2071), a clamping plate (2072), and a roller (2073). One end of the connecting plate (2071) is connected to the movable rod (203), and the other end is connected to the clamping plate (2072). The roller (2073) is located inside the clamping plate (2072). The clamping plate (2072) is engaged with the first movable bracket, and the roller (2073) is tactilely connected to the first movable bracket.

5. The automatic valley-shaving capacity expansion photovoltaic power generation device according to claim 4, characterized in that, The fixing bracket includes: Multiple vertical support components are fixedly connected to multiple precast piles (1) one by one, and the upper end of each vertical support component is inclined; the vertical support component is connected to the first movable bracket, the first electric cylinder (201) and the support rail (206); The first support strip (6) is located at the upper end of the vertical support assembly. Multiple first steel strand zipper mechanisms (7) are arranged in parallel and span across the upper ends of multiple first support purlins (6). The first photovoltaic module (3) is fixed on the first steel strand zipper mechanism (7).

6. The automatic valley-shaving capacity expansion photovoltaic power generation device according to claim 5, characterized in that, The vertical support component includes: Inclined purlin (8), first vertical purlin (9), second vertical purlin (10), and third vertical purlin (11) located on the same plane; The upper height of the inclined purlin (8) and the first vertical purlin (9) gradually decreases to form an inclined angle. The first supporting purlin (6) is connected to the upper ends of the inclined purlin (8) and the first vertical purlin (9). The first electric cylinder (201) and the supporting rail (206) are fixed on the inclined purlin (8) and the first vertical purlin (9). The second vertical purlin (10) and the third vertical purlin (11) are located on both sides of the precast pile (1). The inclined purlin (8), the first vertical purlin (9), the second vertical purlin (10), and the third vertical purlin (11) are fixed on the precast pile (1) by clamps (12); the lower end of the first movable bracket is movably connected to the clamps (12).

7. The automatic valley-shaving capacity expansion photovoltaic power generation device according to claim 6, characterized in that, The first movable support includes: The first movable purlin (13) and the second movable purlin (14) are respectively connected to the clamp (12) by a triangular connector (15). The second support strip (16) connects the upper ends of the first movable strip (13) and the second movable strip (14); Multiple second steel strand cable locking mechanisms (17) are arranged in parallel and span across the upper ends of multiple second support purlins (16), and the second photovoltaic module (4) is fixed on the second steel strand cable locking mechanism (17); The card plate (2072) engages with the first movable slat (13), and the roller (2073) is tumbledly connected to the first movable slat (13).

8. The automatic valley-shaving capacity expansion photovoltaic power generation device according to claim 7, characterized in that, The second movable support includes: The first transverse purlin (18) is connected at both ends to the movable rods (203) in the two support mechanisms (2); The second transverse purlin (19) is arranged parallel to the first transverse purlin (18), and its two ends are respectively connected to the movable rods (203) in the two support mechanisms (2); An angle adjustment mechanism is provided on the first transverse purlin (18); A hinge component (20) is provided on the second transverse purlin (19); One end of the third photovoltaic module (5) is connected to the angle adjustment mechanism, and the other end is connected to the hinge component (20).

9. The automatic valley-shaving capacity expansion photovoltaic power generation device according to claim 8, characterized in that, The angle adjustment mechanism includes: The second electric cylinder (21) is connected to the first transverse purlin (18); A support plate (22) is located above the second electric cylinder (21), and the first end of the support plate (22) is movably connected to the second electric cylinder (21) in a vertical position; The movable plate (23) is movably connected to the second end of the support plate (22); the third photovoltaic module (5) is connected to the movable plate (23).

10. The automatic valley-shaving capacity expansion photovoltaic power generation device according to claim 9, characterized in that, The movable plate (23) is movably connected to the second end of the support plate (22) via a connecting shaft (24).

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