A safety protection device for photovoltaic power generation components

Abstract

The present invention provides a safety protection device for a photovoltaic power generation component, which relates to the field of photovoltaic power generation technology, and includes a mounting base, a lifting groove is arranged on the upper surface of the mounting base, a vertically arranged electric lifting rod group is fixedly connected to the inner bottom surface of the mounting base, a telescopic end of the electric lifting rod group is fixedly connected to a lifting platform, the lifting platform extends from the lifting groove, a photovoltaic kit is arranged on the upper surface of the lifting platform, and two groups of shield assemblies sliding in the left and right directions are symmetrically arranged on the left and right sides of the lifting platform. By arranging a movable shield, the photovoltaic component is exposed to the outside world when the weather is normal, ensuring that the photovoltaic component maintains a high power generation efficiency, and shielding the photovoltaic component when the weather is bad, thereby ensuring the safety of the photovoltaic kit in a bad environment, and reducing the impact on the power generation efficiency of the photovoltaic component while ensuring the safety of the photovoltaic component.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaic power generation, and in particular to a safety protection device for a photovoltaic power generation component. Background Art

[0002] The main component of a solar cell module is a solar cell, also known as a photovoltaic cell or photovoltaic panel. These cells are usually made of silicon material and their working principle is based on the photovoltaic effect, that is, when sunlight shines on the surface of the cell, light energy is converted into electrical energy.

[0003] Photovoltaic modules are usually installed in open environments. When the outdoor environment is relatively harsh, such as heavy rain, hail, etc., the photovoltaic modules are exposed to the outside world and are easily damaged. Existing protection devices for photovoltaic power generation modules, such as a self-protection device for a solar cell module disclosed in CN118214358A, are equipped with a fixed protective cover to protect the photovoltaic panel. The protective cover may affect the light intensity received by the photovoltaic panel, causing the power generation efficiency of the photovoltaic panel to decrease. Summary of the invention

[0004] The present invention provides a safety protection device for a photovoltaic power generation assembly, which is used to solve the defect in the prior art that a photovoltaic panel is arranged in a fixed protection cover for a long time, which affects the working efficiency of the photovoltaic panel.

[0005] On the one hand, the present invention provides a safety protection device for a photovoltaic power generation component, including a mounting base, a lifting groove is arranged on the upper surface of the mounting base, a vertically arranged electric lifting rod group is fixedly connected to the inner bottom surface of the mounting base, the telescopic end of the electric lifting rod group is fixedly connected to a lifting platform, the lifting platform extends out of the lifting groove, a photovoltaic kit is arranged on the upper surface of the lifting platform, and two groups of guard assemblies sliding along the left and right directions are symmetrically arranged on the left and right sides of the lifting platform.

[0006] Preferably, the lifting platform is convex, and an annular groove with an opening facing upward is provided at the step.

[0007] Preferably, the photovoltaic kit includes two mounting frames, which are respectively fixedly connected to the left and right sides of the upper surface of the lifting platform, a center pole is fixedly connected between the two mounting frames, a mounting plate is rotatably connected to the center pole, the photovoltaic panel is mounted on the upper surface of the mounting plate, and an adjustment component is installed on the lower surface of the mounting plate, and the adjustment component is used to adjust the angle between the mounting plate and the ground.

[0008] Preferably, a vertical control groove is provided on the upper surface of the lifting platform, and the adjustment component includes a motor 1, which is installed on the inner bottom surface of the control groove, and the output end of the motor 1 is fixedly connected with a vertically arranged screw rod 1, and a lifting block is threadedly connected on the screw rod 1, and a buffer groove is provided on the upper surface of the lifting block, and a connecting block is slidably connected in the buffer groove along the up and down directions, and a spring 1 is fixedly connected between the lower surface of the connecting block and the inner bottom surface of the buffer groove, and a sliding groove 1 is provided on the lower surface of the mounting plate along the front-to-back direction, and a center rod 2 is slidably connected in the sliding groove 1, and the upper end of the connecting block is rotatably connected to the center rod 2.

[0009] Preferably, a group of front-to-back symmetrical guide grooves and a group of left-to-right symmetrical sliding grooves are provided on the upper surface of the mounting base, the shield assembly includes a protective shield, and a plurality of limit blocks are fixedly connected to the lower surfaces of the front and rear side walls of the protective shield, the limit blocks are slidably connected in the guide grooves along the left and right directions, a driving block is provided on the lower surface of the protective shield, the driving block slides in the left and right directions in the sliding grooves, the lower part of the driving block is threadedly connected to the screw rod 2, a gear 1 is fixedly sleeved on the screw rod 2, two ends of the screw rod 2 are rotatably mounted on the inner mounting frame 2 and the outer mounting frame 2 respectively, the inner mounting frame 2 and the outer mounting frame 2 are fixedly connected to the inner top surface of the mounting base, a motor 2 is also installed on the inner mounting frame 2, the output end of the motor 2 is fixedly connected to the gear 2, and the gear 1 is meshed with the gear 2.

[0010] Preferably, the shield assembly further comprises a rebound shaft, which is mounted on the inner wall of the mounting base, and a protective cloth is wrapped around the rebound shaft, and the other end of the protective cloth is fixedly connected to the protective shield.

[0011] Preferably, a protection control module is also included, and the protection control module includes: A rain storage tank is arranged on the mounting base and is used to collect rainwater or snow water. A liquid level sensor is arranged inside the rain storage tank; A collision monitoring unit for obtaining the frequency of effective impact; Wind speed sensor, used to obtain real-time wind speed; Radiometer, used to obtain actual irradiance value; The control unit is used to control the opening and closing of the shield assembly based on the liquid level of the rain storage tank, the monitoring result of the collision monitoring unit, the detection result of the wind speed sensor and the detection result of the irradiance meter.

[0012] Preferably, the collision monitoring unit comprises: The impact sensor is arranged on the mounting base; A data acquisition subunit, used to acquire monitoring data of the impact sensor, the monitoring data of the impact sensor including the number of data and the collision intensity; A data processing subunit, used to classify the detection data with a collision intensity greater than a preset threshold value as effective impact data, and calculate the frequency of effective impacts; ; Where f is the frequency of effective impact of the impact sensor; M is the total number of effective impact data per unit time, As unit time.

[0013] Preferably, the control unit comprises: A control parameter calculation subunit, used for calculating protection control parameters; ; Where U is the protection control parameter, is the calculation coefficient of precipitation per unit time; is the calculation coefficient of hail weather; is the calculation coefficient of wind load size; is the calculation coefficient of photovoltaic module power generation efficiency; is the liquid level of the rain storage tank at the current detection moment; is the liquid level of the rain storage tank at the last detection time; t is the time from the last detection time to the current detection time; ln is a logarithmic function with e as the base; e is a natural base; T is the operating time of the photovoltaic module; The basis for grading the operation time of photovoltaic modules with respect to the attenuation of the waterproof ability of photovoltaic modules; The calculation coefficient of the operation time of the photovoltaic module for the attenuation of the waterproof ability of the photovoltaic module; is the preset calculation reference value of precipitation per unit time; R is the inner cavity radius of the rain storage tank; is the circumference of a circle; f is the frequency of the effective impact of the impact sensor; is the discrimination threshold of the effective impact frequency of the impact sensor; is the air density; is the resistance coefficient of mounting frame 1; is the wind pressure height variation coefficient; V is the actual wind speed; A is the surface area of ​​the mounting frame; is the standard setting value of the angle between the mounting frame and the ground; sin is the sine function; is the preset calculation reference value of the allowable wind load; lg is a logarithmic function with 10 as the base; n is the calculation coefficient of the operation time of the photovoltaic module for the attenuation of the wind resistance of the photovoltaic module; It is the classification basis for the operation time of photovoltaic modules with respect to the attenuation of wind resistance of photovoltaic modules; E is the actual irradiance value; is the standard light conversion efficiency of photovoltaic modules; The basis for grading the operating time of photovoltaic modules with respect to the attenuation of the light conversion efficiency of photovoltaic modules; The calculation coefficient of the photovoltaic module operation time for the attenuation of the light conversion efficiency of the photovoltaic module; The calculated benchmark value for the power generation efficiency of the preset photovoltaic modules; The parameter judgment subunit is used to determine the opening and closing of the shield assembly according to the protection control parameter. When the protection control parameter is greater than or equal to the preset danger threshold, the shield assembly is controlled to be closed. When the protection control parameter is less than the preset danger threshold, the shield assembly is controlled to be opened.

[0014] Compared with the prior art, the present invention has the following beneficial effects: By setting up movable shields, photovoltaic modules can be exposed to the outside world when the weather is normal, ensuring that the photovoltaic modules maintain a high power generation efficiency. Photovoltaic modules can be shielded in bad weather, thereby ensuring the safety of photovoltaic modules in bad environments and reducing the impact on the power generation efficiency of photovoltaic modules while ensuring the safety of photovoltaic modules. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a main structural schematic diagram of the present invention; Figure 3 yes Figure 2 The enlarged schematic diagram of point B in the middle; Figure 4 yes Figure 2 The enlarged schematic diagram at C in the middle; Figure 5 make Figure 2 Middle AA section view; Figure 6 yes Figure 5 Enlarged schematic diagram at point D in the middle.

[0017] Reference numerals: 1. Mounting base; 2. Lifting slot; 3. Electric lifting rod group; 4. Lifting platform; 5. Mounting frame 1; 6. Center rod 1; 7. Mounting plate; 8. Photovoltaic panel; 9. Control slot; 10. Motor 1; 11. Screw 1; 12. Lifting block; 13. Buffer slot; 14. Connecting block; 15. Spring 1; 16. Sliding slot 1; 17. Center rod 2; 18. Guide slot; 19. Sliding slot 2; 20. Protective cover; 21. Limit block; 22. Drive block; 23. Screw 2; 24. Gear 1; 251. Inner mounting frame 2; 252. Outer mounting frame 2; 26. Motor 2; 27. Gear 2; 28. Rebound shaft; 29. ​​Protective cloth; 30. Annular groove. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions and technical features between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0020] Example 1 An embodiment of the present invention provides a safety protection device for a photovoltaic power generation component, including a mounting base 1, a lifting groove 2 is arranged on the upper surface of the mounting base 1, a vertically arranged electric lifting rod group 3 is fixedly connected to the inner bottom surface of the mounting base 1, a telescopic end of the electric lifting rod group 3 is fixedly connected to a lifting platform 4, the lifting platform 4 extends out from the lifting groove 2, a photovoltaic kit is arranged on the upper surface of the lifting platform 4, and two groups of protective cover assemblies sliding along the left and right directions are symmetrically arranged on the left and right sides of the lifting platform 4.

[0021] Preferably, the lifting platform 4 is convex, and an annular groove 30 with an opening facing upward is provided at the step.

[0022] In this embodiment, the material of the shield component is a transparent material.

[0023] The beneficial effects of the above technical solution are: Under normal weather conditions, the two shield components are kept away from each other, and the photovoltaic kit is exposed to the external environment. At this time, the photovoltaic module can receive direct sunlight, ensuring that the photovoltaic module maintains a high power generation efficiency.

[0024] When the weather conditions worsen, the electric lifting rod group 3 is retracted to allow the lifting platform 4 to descend carrying the photovoltaic kit, and the two shield assemblies are brought close to each other to shield the photovoltaic kit, thereby ensuring the safety of the photovoltaic kit in severe weather. By lowering the photovoltaic kit, the wind-exposed area of ​​the device is reduced, and the overall stability of the device in severe weather is improved. At the same time, by using a transparent and light-transmitting material shield assembly, the photovoltaic kit can still receive part of the sunlight refracted by the shield assembly while being protected by the shield assembly, ensuring that the photovoltaic kit still has a certain power generation capacity in severe weather.

[0025] By setting an annular groove 30 at the intersection of the first platform and the second platform, it is ensured that when the lifting platform 4 is in a high position, external dust and the like will fall into the annular groove after passing through the gap between the lifting platform 4 and the lifting groove 2, thereby preventing dust from entering the interior of the mounting base 1 and ensuring the cleanliness of the interior of the mounting base 1.

[0026] Example 2 On the basis of Example 1, the photovoltaic kit includes two mounting frames 5, which are respectively fixedly connected to the left and right sides of the upper surface of the lifting platform 4, a center rod 6 is fixedly connected between the two mounting frames 5, a mounting plate 7 is rotatably connected to the center rod 6, a photovoltaic panel 8 is mounted on the upper surface of the mounting plate 7, and an adjustment component is installed on the lower surface of the mounting plate 7, and the adjustment component is used to adjust the angle between the mounting plate 7 and the ground.

[0027] Preferably, a vertical control groove 9 is provided on the upper surface of the lifting platform 4, and the adjustment component includes a motor 10, which is installed on the inner bottom surface of the control groove 9, and the output end of the motor 10 is fixedly connected with a vertically arranged screw rod 11, and a lifting block 12 is threadedly connected to the screw rod 11, and a buffer groove 13 is provided on the upper surface of the lifting block 12, and a connecting block 14 is slidably connected in the buffer groove 13 along the up and down directions, and a spring 15 is fixedly connected between the lower surface of the connecting block 14 and the inner bottom surface of the buffer groove 13, and a sliding groove 16 is provided on the lower surface of the mounting plate 7 along the front-to-back direction, and a center rod 2 17 is slidably connected in the sliding groove 16, and the upper end of the connecting block 14 is rotatably connected to the center rod 2 17.

[0028] The beneficial effects of the above technical solution are: The mounting plate 7 is rotatably connected to the center rod 6, and the lifting and lowering of the lifting block 12 is controlled by the motor 10 to control the angle between the mounting plate 7 and the ground, thereby realizing the function of adjusting the light receiving angle of the photovoltaic panel 8, thereby ensuring that the photovoltaic panel 8 maintains a high power generation efficiency. When encountering strong winds, on the one hand, the lifting block 12 can be lowered by active adjustment to reduce the wind-receiving area of ​​the photovoltaic panel 8 to ensure the safety of the photovoltaic panel 8. On the other hand, before active adjustment, after the photovoltaic panel 8 is blown by the wind, the spring 15 will be squeezed through the connecting block 14 to reduce the angle between the photovoltaic panel 8 and the ground, thereby reducing the wind-receiving area of ​​the photovoltaic panel 8, and ensuring the safety of the photovoltaic panel 8 before actively adjusting the installation angle of the photovoltaic panel 8.

[0029] Example 3 On the basis of embodiment 1 or 2, a group of front-to-back symmetrical guide grooves 18 and a group of left-right symmetrical sliding grooves 19 are provided on the upper surface of the mounting base 1. The shield assembly includes a protective cover 20. A plurality of limit blocks 21 are fixedly connected to the lower surfaces of the front and rear side walls of the protective cover 20. The limit blocks 21 are slidably connected in the guide grooves 18 along the left-right direction. A driving block 22 is provided on the lower surface of the protective cover 20. The driving block 22 slides in the left-right direction in the sliding groove 19. The lower part of the driving block 22 is threadedly connected to the screw rod 23. The screw rod 23 is fixedly sleeved with a gear 1 24. The two ends of the screw rod 23 are rotatably mounted on the inner mounting frame 251 and the outer mounting frame 252 respectively. The inner mounting frame 251 and the outer mounting frame 252 are both fixedly connected to the inner top surface of the mounting base 1. A motor 26 is also installed on the inner mounting frame 251. The output end of the motor 26 is fixedly connected to a gear 27. The gear 1 24 is meshed with the gear 27.

[0030] Preferably, the shield assembly further includes a rebound shaft 28 , which is mounted on the inner wall of the mounting base 1 , and a protective cloth 29 is wound around the rebound shaft 28 , and the other end of the protective cloth 29 is fixedly connected to the protective shield 20 .

[0031] In this embodiment, the rebound shaft is a prior art, and its structure refers to a rebound shaft for a mechanical handle disclosed in CN109505937A.

[0032] The beneficial effects of the above technical solution are: When the protective cover 20 is driven to move, the motor 2 26 is started, and the meshing relationship between the gear 1 24 and the gear 2 27 drives the screw 2 23 to rotate, and then the driving block 22 threadedly connected to the screw 23 moves in the left and right directions, thereby driving the protective cover 20 to open or close.

[0033] By fixing the limit block 21 on the lower surface of the front and rear side walls of the protective cover 20, the limit block 21 slides in the guide groove 18, thereby guiding the movement trajectory of the protective cover 20 and improving the connection strength between the protective cover 20 and the mounting base 1, thereby enhancing the ability of the protective cover 20 to withstand severe weather.

[0034] By setting the protective cloth 29, when the two protective covers 20 approach each other, the protective cloth 29 is pulled out from the rebound shaft 28, thereby covering the guide groove 18 and the sliding groove 19, preventing rain, snow, mud and sand and other debris from entering the guide groove 18 and the sliding groove 19 and causing device failure. When the two protective covers 20 move away from each other, the protective cloth 29 is automatically rolled up by the rebound shaft 28, thereby realizing the automation of the recovery of the protective cloth 29, eliminating the need for manual winding and reducing the workload of the staff.

[0035] Example 4 Based on any one of Embodiments 1-3, a protection control module is further included, and the protection control module includes: A rain storage tank is arranged on the mounting base 1 and is used to collect rainwater or snow water. A liquid level sensor is arranged inside the rain storage tank; A collision monitoring unit for obtaining the frequency of effective impact; Wind speed sensor, used to obtain real-time wind speed; Radiometer, used to obtain actual irradiance value; The control unit is used to control the opening and closing of the shield assembly based on the liquid level of the rain storage tank, the monitoring result of the collision monitoring unit, the detection result of the wind speed sensor and the detection result of the irradiance meter.

[0036] Preferably, the collision monitoring unit comprises: The impact sensor is arranged on the mounting base 1; A data acquisition subunit, used to acquire monitoring data of the impact sensor, the monitoring data of the impact sensor including the number of data and the collision intensity; A data processing subunit, used to classify the detection data with a collision intensity greater than a preset threshold value as effective impact data, and calculate the frequency of effective impacts; ; Where f is the frequency of effective impact of the impact sensor; M is the total number of effective impact data per unit time, As unit time.

[0037] 9. A safety protection device for a photovoltaic power generation assembly according to claim 8, characterized in that the control unit comprises: A control parameter calculation subunit, used for calculating protection control parameters; ; Where U is the protection control parameter, is the calculation coefficient of precipitation per unit time; is the calculation coefficient of hail weather; is the calculation coefficient of wind load size; is the calculation coefficient of photovoltaic module power generation efficiency; is the liquid level of the rain storage tank at the current detection moment; is the liquid level of the rain storage tank at the last detection time; t is the time from the last detection time to the current detection time; ln is a logarithmic function with e as the base; e is a natural base; T is the operating time of the photovoltaic module; The basis for grading the operation time of photovoltaic modules with respect to the attenuation of the waterproof ability of photovoltaic modules; The calculation coefficient of the operation time of the photovoltaic module for the attenuation of the waterproof ability of the photovoltaic module; is the preset calculation reference value of precipitation per unit time; R is the inner cavity radius of the rain storage tank; is the circumference of a circle; f is the frequency of the effective impact of the impact sensor; is the discrimination threshold of the effective impact frequency of the impact sensor; is the air density; is the resistance coefficient of mounting frame 1; is the wind pressure height variation coefficient; V is the actual wind speed; A is the surface area of ​​the mounting frame 5; is the standard setting value of the angle formed by the mounting frame 5 and the ground; sin is the sine function; is the preset calculation reference value of the allowable wind load; lg is a logarithmic function with 10 as the base; n is the calculation coefficient of the operation time of the photovoltaic module for the attenuation of the wind resistance of the photovoltaic module; It is the classification basis for the operation time of photovoltaic modules with respect to the attenuation of wind resistance of photovoltaic modules; E is the actual irradiance value; is the standard light conversion efficiency of photovoltaic modules; The basis for grading the operating time of photovoltaic modules with respect to the attenuation of the light conversion efficiency of photovoltaic modules; The calculation coefficient of the photovoltaic module operation time for the attenuation of the light conversion efficiency of the photovoltaic module; The calculated benchmark value for the power generation efficiency of the preset photovoltaic modules; The parameter judgment subunit is used to determine the opening and closing of the shield assembly according to the protection control parameter. When the protection control parameter is greater than or equal to the preset danger threshold, the shield assembly is controlled to be closed. When the protection control parameter is less than the preset danger threshold, the shield assembly is controlled to be opened.

[0038] In this embodiment, the standard light conversion rate of the photovoltaic module is the light conversion rate of the photovoltaic module in the factory state.

[0039] In this embodiment, the precipitation is rainfall or snowfall.

[0040] The beneficial effects of the above technical solution are: By setting up rain storage tanks, collision monitoring units, wind speed sensors and irradiance meters, the current precipitation conditions, wind speed conditions, hail conditions and light conditions can be obtained in turn. By comprehensively considering the current weather conditions, it is determined whether to close the shield assembly, thereby realizing automatic protection of photovoltaic power generation components. No manual control is required, which reduces the workload of staff and improves the timeliness of protection of photovoltaic power generation components.

[0041] By classifying the detection data in the monitoring data of the impact sensor that is greater than a preset threshold as effective impact data, the influence caused by high-frequency, low-intensity impact data is eliminated, thereby improving the practicality and reliability of the frequency of effective impacts output by the collision monitoring unit.

[0042] pass The actual precipitation per unit time is calculated to reflect the intensity of rain or snowfall. The actual precipitation per unit time calculated based on the operating time of the photovoltaic modules can be obtained, so that Get an estimate of the intensity of rain or snowfall by Determine whether there is hail. When hail exists, due to The value of is extremely large, so that the protection control parameter must be greater than or equal to the preset danger threshold, so that the shield assembly can be quickly closed to protect the photovoltaic power generation assembly. The wind load received by the photovoltaic module under theoretical conditions is calculated and then The actual allowable wind load calculation benchmark value based on the operating time of the photovoltaic module is obtained, so that the Get an estimate of the current wind conditions by Calculate the current power generation efficiency of the photovoltaic module, and then By obtaining an evaluation value of the power generation efficiency of the photovoltaic module under the condition of the current irradiance value, and then comprehensively considering the evaluation value of the intensity of rainfall or snowfall, the evaluation value under the current wind conditions and the evaluation value of the power generation efficiency of the photovoltaic module under the current irradiance value, it is possible to judge whether to close the shield assembly according to the impact of the current weather on the photovoltaic module and the current power generation situation of the photovoltaic module, thereby judging whether to close the shield assembly, thereby improving the intelligence of the control of the shield assembly, and improving the power generation efficiency of the photovoltaic power generation module while ensuring the safe use of the photovoltaic power generation module.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A safety protection device for a photovoltaic power generation assembly, characterized in that: The invention comprises a mounting base (1), wherein a lifting groove (2) is arranged on the upper surface of the mounting base (1), a vertically arranged electric lifting rod group (3) is fixedly connected to the inner bottom surface of the mounting base (1), a lifting platform (4) is fixedly connected to the telescopic end of the electric lifting rod group (3), the lifting platform (4) extends out from the lifting groove (2), a photovoltaic kit is arranged on the upper surface of the lifting platform (4), and two groups of shield components sliding in the left and right directions are symmetrically arranged on the left and right sides of the lifting platform (4).

2. A safety protection device for a photovoltaic power generation assembly according to claim 1, characterized in that: The lifting platform (4) is convex, and an annular groove (30) with an opening facing upward is provided at the step.

3. A safety protection device for a photovoltaic power generation assembly according to claim 1, characterized in that: The photovoltaic kit comprises two mounting frames (5), the two mounting frames (5) are respectively fixedly connected to the left and right sides of the upper surface of the lifting platform (4), a center rod (6) is fixedly connected between the two mounting frames (5), a mounting plate (7) is rotatably connected to the center rod (6), a photovoltaic panel (8) is mounted on the upper surface of the mounting plate (7), and an adjustment component is installed on the lower surface of the mounting plate (7), and the adjustment component is used to adjust the angle between the mounting plate (7) and the ground.

4. A safety protection device for a photovoltaic power generation assembly according to claim 3, characterized in that: The upper surface of the lifting platform (4) is provided with a control groove (9) in a vertical direction. The adjustment component comprises a motor (10). The motor (10) is installed on the inner bottom surface of the control groove (9). The output end of the motor (10) is fixedly connected with a vertically arranged screw rod (11). The screw rod (11) is threadedly connected with a lifting block (12). The upper surface of the lifting block (12) is provided with a buffer groove (13). A connecting block (14) is slidably connected in the buffer groove (13) along the up-down direction. A spring (15) is fixedly connected between the lower surface of the connecting block (14) and the inner bottom surface of the buffer groove (13). The lower surface of the mounting plate (7) is provided with a sliding groove (16) along the front-back direction. A center rod (17) is slidably connected in the sliding groove (16). The upper end of the connecting block (14) is rotatably connected with the center rod (17).

5. A safety protection device for a photovoltaic power generation assembly according to claim 1, characterized in that: The upper surface of the mounting base (1) is provided with a group of front-to-rear symmetrical guide grooves (18) and a group of left-to-right symmetrical sliding grooves (19). The shield assembly comprises a shield (20). The lower surfaces of the front and rear side walls of the shield (20) are fixedly connected with a plurality of limit blocks (21). The limit blocks (21) are slidably connected in the guide grooves (18) along the left-right direction. The lower surface of the shield (20) is provided with a driving block (22). The driving block (22) slides in the left-to-right direction in the sliding grooves (19). The lower part of the driving block (22) is threadedly connected to the The screw rod 2 (23) is provided with a fixed sleeve of a gear 1 (24). The two ends of the screw rod 2 (23) are rotatably mounted on the inner mounting frame 2 (251) and the outer mounting frame 2 (252). The inner mounting frame 2 (251) and the outer mounting frame 2 (252) are both fixedly connected to the inner top surface of the mounting base (1). The inner mounting frame 2 (251) is also provided with a motor 2 (26). The output end of the motor 2 (26) is fixedly connected with a gear 2 (27). The gear 1 (24) is meshed with the gear 2 (27).

6. A safety protection device for a photovoltaic power generation assembly according to claim 5, characterized in that: The shield assembly also includes a rebound shaft (28), which is mounted on the inner wall of the mounting base (1), and a protective cloth (29) is wound around the rebound shaft (28), and the other end of the protective cloth (29) is fixedly connected to the protective shield (20).

7. A safety protection device for a photovoltaic power generation assembly according to claim 3, characterized in that: It also includes a protection control module, which includes: A rain storage tank is arranged on the mounting base (1) and is used to collect rainwater or snow water. A liquid level sensor is arranged inside the rain storage tank; A collision monitoring unit for obtaining the frequency of effective impact; Wind speed sensor, used to obtain real-time wind speed; Radiometer, used to obtain actual irradiance value; The control unit is used to control the opening and closing of the shield assembly based on the liquid level of the rain storage tank, the monitoring result of the collision monitoring unit, the detection result of the wind speed sensor and the detection result of the irradiance meter.

8. A safety protection device for a photovoltaic power generation assembly according to claim 3, characterized in that: The collision monitoring unit includes: An impact sensor is arranged on the mounting base (1); A data acquisition subunit, used to acquire monitoring data of the impact sensor, the monitoring data of the impact sensor including the number of data and the collision intensity; A data processing subunit, used to classify the detection data with a collision intensity greater than a preset threshold value as effective impact data, and calculate the frequency of effective impacts; ; Where f is the frequency of effective impact of the impact sensor; M is the total number of effective impact data per unit time, As unit time.

9. A safety protection device for a photovoltaic power generation assembly according to claim 8, characterized in that: The control unit includes: A control parameter calculation subunit, used for calculating protection control parameters; ; Where U is the protection control parameter, is the calculation coefficient of precipitation per unit time; is the calculation coefficient of hail weather; is the calculation coefficient of wind load size; is the calculation coefficient of photovoltaic module power generation efficiency; is the liquid level of the rain storage tank at the current detection moment; is the liquid level of the rain storage tank at the last detection time; t is the time from the last detection time to the current detection time; ln is a logarithmic function with e as the base; e is a natural base; T is the operating time of the photovoltaic module; The basis for grading the operation time of photovoltaic modules with respect to the attenuation of the waterproof ability of photovoltaic modules; The calculation coefficient of the operation time of the photovoltaic module for the attenuation of the waterproof ability of the photovoltaic module; is the preset calculation reference value of precipitation per unit time; R is the inner cavity radius of the rain storage tank; is the circumference of a circle; f is the frequency of the effective impact of the impact sensor; is the discrimination threshold of the effective impact frequency of the impact sensor; is the air density; is the resistance coefficient of mounting frame 1; is the wind pressure height variation coefficient; V is the actual wind speed; A is the surface area of ​​the mounting frame (5); is the standard setting value of the angle formed by the mounting frame 1 (5) and the ground; sin is the sine function; is the preset calculation reference value of the allowable wind load; lg is a logarithmic function with 10 as the base; n is the calculation coefficient of the operation time of the photovoltaic module for the attenuation of the wind resistance of the photovoltaic module; It is the classification basis for the operation time of photovoltaic modules with respect to the attenuation of wind resistance of photovoltaic modules; E is the actual irradiance value; is the standard light conversion efficiency of photovoltaic modules; The basis for grading the operating time of photovoltaic modules with respect to the attenuation of the light conversion efficiency of photovoltaic modules; The calculation coefficient of the photovoltaic module operation time for the attenuation of the light conversion efficiency of the photovoltaic module; The calculated benchmark value for the power generation efficiency of the preset photovoltaic modules; The parameter judgment subunit is used to determine the opening and closing of the shield assembly according to the protection control parameter. When the protection control parameter is greater than or equal to the preset danger threshold, the shield assembly is controlled to be closed. When the protection control parameter is less than the preset danger threshold, the shield assembly is controlled to be opened.

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