Photovoltaic power generation device capable of being rotatably cleaned

Abstract

The photovoltaic power generation device comprises a fixing frame, at least one mounting plate, a photovoltaic plate, a rotation driving mechanism and an infrared sensor, the fixing frame comprises an adjusting plate and a supporting frame, the adjusting plate and the supporting frame are arranged at intervals, the adjusting plate is provided with an opening, and the opening penetrates through the adjusting plate in the wall thickness direction of the adjusting plate; the mounting plate is connected with the adjusting plate and covers the opening; the photovoltaic panel is mounted on the mounting plate and is supported by the mounting plate; the rotation driving mechanism is installed on the adjusting plate and supported by the adjusting plate, the rotation driving mechanism is in driving connection with the installation plate, and the rotation driving mechanism is used for driving the installation plate to rotate so that the two opposite faces of the installation plate can face upwards alternately; the infrared sensor is mounted on the mounting plate, is connected with the rotary driving mechanism, and is used for monitoring accumulated dust on the surface of the photovoltaic panel or the mounting plate. The dust on the photovoltaic panel is automatically monitored, and the photovoltaic panel is rotated and inverted, so that the dust on the surface of the photovoltaic panel is removed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power generation devices, in particular to a rotatable cleaning photovoltaic power generation device. BACKGROUND

[0002] Photovoltaic power generation is the main form of solar energy utilization, but its power generation panel is exposed to the outdoors for a long time, and is easy to adsorb dust, sand and other pollutants, resulting in a decrease in light transmittance and the formation of hot spots, which seriously reduces the power generation efficiency. The traditional and widely used cleaning method is regular manual cleaning. This method requires personnel to use a vacuum cleaner, mop and other tools for operation, which not only consumes a large amount of water resources and human resources, but also has high cost. In addition, for arrays deployed on rooftops, barren mountains or large photovoltaic power stations, cleaning operations are difficult, have poor safety, are inefficient, and may even cause physical damage to the photovoltaic panels during cleaning.

[0003] Therefore, the present application provides a rotatable cleaning photovoltaic power generation device to solve the problem of the need for a large amount of manpower and tools for dust or attached material cleaning of photovoltaic power generation devices, thereby reducing maintenance costs and improving power generation efficiency. SUMMARY

[0004] In order to overcome the shortcomings of the prior art, the purpose of the present application is to provide a rotatable cleaning photovoltaic power generation device that can solve the problems of inconvenient cleaning of photovoltaic power generation devices and resource waste caused by traditional cleaning methods, thereby improving power generation efficiency and reducing maintenance costs.

[0005] The purpose of the present application is achieved by the following technical solutions:

[0006] A rotatable cleaning photovoltaic power generation device, comprising:

[0007] A fixed frame comprising an adjusting plate and a support frame, the adjusting plate and the support frame being arranged at intervals, the adjusting plate having an opening that penetrates the adjusting plate in the wall thickness direction of the adjusting plate;

[0008] At least one mounting plate connected to the adjusting plate and covering the opening;

[0009] A photovoltaic panel mounted on the mounting plate and supported by the mounting plate;

[0010] A rotary drive mechanism mounted on the adjusting plate and supported by the adjusting plate, the rotary drive mechanism being drivingly connected to the mounting plate, the rotary drive mechanism being configured to drive the mounting plate to rotate so that the two opposite surfaces of the mounting plate are alternately upward;

[0011] An infrared sensor is mounted on the mounting plate, electrically connected with the rotating drive mechanism, and used for monitoring dust accumulation on the photovoltaic panel or the surface of the mounting plate.

[0012] Further, the support frame and the adjusting plate are hinged, the support frame is connected with an arc-shaped rack extending along the direction of gravity, the arc-shaped rack has a plurality of meshing teeth distributed along the extension direction of the arc-shaped rack, and the adjusting plate has a gear meshing with the arc-shaped rack, so that the adjusting plate can adjust the angle between the support frame and the adjusting plate along the arc-shaped rack.

[0013] Further, the rotatable cleaning photovoltaic power generation device further comprises a flushing device, the flushing device comprises a frame, at least one first water pipe and at least one spray head, the frame is mounted below the adjusting plate and the support frame, one end of the frame is hinged with the support frame, the other end of the frame is meshed with the arc-shaped rack, so that the frame can move towards or away from the mounting plate along the arc-shaped rack, the first water pipe is mounted on the frame, and the spray head is communicated with the first water pipe and faces the mounting plate.

[0014] Further, the spray head is a rotating spray head.

[0015] Further, the support frame and the frame are connected through a hinge shaft, the hinge shaft is a second water pipe, one end of the first water pipe is communicated with the second water pipe, at least one end of the second water pipe is connected with a sleeve, the sleeve is connected with the support frame and is relatively stationary, one end of the sleeve is communicated with the second water pipe, and the other end of the sleeve is communicated with the external environment, and the sleeve is used for connecting a cleaning source.

[0016] Further, parallel guide rails are arranged on the horizontal opposite sides of the opening and mounted on the adjusting plate, the guide rails extend upwardly and obliquely relative to the horizontal plane, so that the horizontal height of the high end side of the guide rails is greater than that of the low end side of the guide rails, and the guide rails are further connected with brushes, both ends of each brush are slidably connected with one of the guide rails, so that the brush slides to one end of the guide rail under the action of gravity.

[0017] Further, a groove is arranged on the mounting plate, the infrared sensor is arranged in the groove, and the groove is used for accommodating the adhering objects.

[0018] Further, the mounting plate is connected with a photovoltaic panel on each of the opposite sides, a plurality of mounting plates are linearly distributed and collectively arranged on the opening, and each of the mounting plates is connected with a rotating drive mechanism, so that each of the mounting plates can rotate independently.

[0019] Further, the mounting plate is provided with a receiving cavity, which is distributed at one end of the opening, and the rotating drive mechanism is accommodated in the receiving cavity.

[0020] Further, the mounting plate is provided with a reflecting plate, the mounting plate, the frame body and the reflecting plate are sequentially distributed along the direction of gravity, and the reflecting plate is used for reflecting light to the photovoltaic panel close to the reflecting plate.

[0021] Compared with the prior art, the beneficial effects of the present application are that:

[0022] 1. The design based on infrared sensors has the core beneficial effect of realizing the intelligentization and precision of the cleaning process, and significantly improving the power generation efficiency and economy of the system. Traditional cleaning methods often use passive programs with fixed time intervals, which cannot perceive the actual pollution condition, and may cause ineffective cleaning or cleaning not in time. This design monitors the surface of the photovoltaic panel in real time through infrared sensors, and can accurately identify the accumulation degree of dust, snow and other different attachments. Only when the pollution reaches the preset threshold, the cleaning mechanism will be triggered. This design greatly saves water resources and electric energy, avoids unnecessary energy consumption and mechanical wear and tear, and prolongs the service life of the equipment. It ensures that the photovoltaic panel is always in a relatively clean state, maximally reduces the "hot spot effect" and power loss caused by stains, and continuously and stably improves the power generation efficiency. Moreover, this design reduces the dependence on manual inspection, realizes the automatic operation of unattended operation, and is especially suitable for large-scale photovoltaic power stations, remote areas and complex installation environments, greatly reducing the operation and maintenance cost.

[0023] 2. The design based on the rotating drive mechanism synchronously solves the problems of double-sided cleaning and power generation continuity through a single rotating action, and has simple structure and high reliability. The mechanism drives the mounting plate to flip by 180 degrees, so that the front and back functions of the photovoltaic panel can be alternately exchanged: when one side faces up to generate electricity, the other side faces down to be cleaned (such as through a fixed wiper or using gravity to make the dust fall off). This design avoids the idea of additional cleaning module installed on the front of the photovoltaic panel, deeply integrates the cleaning function into the rotating structure itself, greatly simplifies the structure of the overall device, reduces the failure points, and improves the mechanical stability. It avoids the shadow caused by installing cleaning components on the front of the photovoltaic panel, ensuring the complete light reception of the power generation surface. At the same time, this mechanism realizes the seamless connection of "cleaning and generating electricity", because the flipping process is rapid, and at least one side always faces the sky, greatly reducing the power loss caused by traditional stop cleaning, ensuring the continuity and stability of power output, especially suitable for desert or non-adhesive areas. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 A structure diagram of a rotatable cleaning photovoltaic power generation device of the present application;

[0025] Figure 2 A structure diagram of a rotatable cleaning photovoltaic power generation device of the present application; Figure 1 A partial enlarged view A shown in the figure;

[0026] Figure 3 A structure diagram of a rotatable cleaning photovoltaic power generation device of the present application, wherein the photovoltaic panel and the mounting plate are hidden;

[0027] Figure 4 A structure diagram of a rotatable cleaning photovoltaic power generation device of the present application; Figure 3 A partial enlarged view B shown in the figure.

[0028] In the figure: 1, fixed frame; 101, adjusting plate; 111, opening; 102, support frame; 2, mounting plate; 3, photovoltaic panel; 4, rotating drive mechanism; 5, infrared sensor; 6, arc-shaped rack; 7, gear; 8, flushing device; 801, frame body; 802, first water pipe; 803, spray head; 9, hinged shaft; 10, sleeve; 11, guide rail; 12, brush; 13, groove; 14, accommodating cavity; 15, reflector. DETAILED DESCRIPTION

[0029] In the following, the present application will be further described in conjunction with the drawings and specific embodiments, it should be noted that the following described embodiments or technical features between each other or between each technical feature can be any combination to form a new embodiment, without conflict.

[0030] It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or there can be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be an intervening element. As used herein, "vertical", "horizontal", "left", "right", and similar terms are used for explanation purposes only and are not intended to be limiting.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0032] Reference should be made to Figures 1-4The application discloses a rotatable and cleanable photovoltaic power generation device, which comprises a fixing frame 1, at least one mounting plate 2, a photovoltaic panel 3, a rotating driving mechanism 4 and an infrared sensor 5. The fixing frame 1 comprises an adjusting plate 101 and a supporting frame 102, and the adjusting plate 101 and the supporting frame 102 are arranged at intervals. The adjusting plate 101 is provided with an opening 111 which penetrates through the adjusting plate 101 along the wall thickness direction of the adjusting plate 101. The mounting plate 2 is connected with the adjusting plate 101 and covers the opening 111. The photovoltaic panel 3 is mounted on the mounting plate 2 and is supported by the mounting plate 2. The rotating driving mechanism 4 is mounted on the adjusting plate 101 and is supported by the adjusting plate 101. The rotating driving mechanism 4 is drivingly connected with the mounting plate 2 and is used for driving the mounting plate 2 to rotate so that the opposite two surfaces of the mounting plate 2 are alternately upward. The infrared sensor 5 is mounted on the mounting plate 2 and is connected with the rotating driving mechanism 4. The infrared sensor 5 is used for monitoring the dust and other attachments on the surface of the photovoltaic panel 3 or the mounting plate 2.

[0033] The working principle of the application is as follows: The infrared sensor 5 monitors the dust and other attachments on the surface of the photovoltaic panel 3 or the mounting plate 2 in real time. When the detected pollutants reach a set threshold, a signal is sent to the rotating driving mechanism 4. The rotating driving mechanism 4 is then started to drive the mounting plate 2 and the photovoltaic panel 3 thereon to rotate 180 degrees around the shaft, so that the power generation surface originally upward is turned downward, and the cleaning surface is upward. During the rotating process, the downward surface can remove the attachments through an additional cleaning device or gravity. Through periodic rotation, not only the alternating self-cleaning of the two surfaces of the photovoltaic panel 3 is realized, but also the dust accumulation is effectively inhibited, and the continuous operation of the power generation is ensured, thereby significantly improving the power generation efficiency and the maintenance convenience of the photovoltaic system.

[0034] Obviously, based on the design of the infrared sensor 5, the core beneficial effect lies in the intelligentization and precision of the cleaning process, and the power generation efficiency and economy of the system are significantly improved. The traditional cleaning method often adopts a passive program with a fixed time interval, and cannot perceive the actual pollution condition, which may cause ineffective cleaning or cleaning not in time. The design can accurately identify the accumulation degree of dust, snow and other different attachments through real-time monitoring of the surface of the photovoltaic panel 3 by the infrared sensor 5. Only when the pollution reaches the preset threshold, the cleaning mechanism is triggered. The design greatly saves water resources and electric energy, avoids unnecessary energy consumption and mechanical wear and tear, and prolongs the service life of the equipment. The photovoltaic panel 3 is ensured to be in a relatively clean state at all times, the "hot spot effect" and power generation loss caused by stains are minimized, and the power generation efficiency is continuously and stably improved. Moreover, the design reduces the dependence on manual inspection, realizes the automatic operation of unattended operation, is especially suitable for large-scale photovoltaic power stations, remote areas and complex installation environments, and greatly reduces the operation and maintenance cost.

[0035] Based on the design of the rotating driving mechanism 4, the problems of double-sided cleaning and power generation continuity are solved synchronously through a single rotating action, and the structure is simple and reliable. The mechanism drives the installation plate 2 to flip 180 degrees, so that the front and back functions of the photovoltaic panel 3 can be alternately exchanged: when one side is facing up to generate electricity, the other side is facing down to accept cleaning (such as through a fixed scraper or using gravity to make the dust fall off). This design avoids the traditional idea of adding a cleaning module, deeply integrates the cleaning function into the rotating structure itself, greatly simplifies the structure of the overall device, reduces the failure points, and improves the mechanical stability. It avoids the shadow caused by installing cleaning components on the front of the photovoltaic panel 3, ensuring the complete light reception of the power generation surface. At the same time, this mechanism realizes the seamless connection of "cleaning and generating electricity", because the flipping process is rapid, and at least one side is always facing the sky, greatly reducing the power loss caused by traditional cleaning downtime, ensuring the continuity and stability of power output, especially suitable for desert or non-adhesive areas.

[0036] It is worth noting that in the present application, the rotating driving mechanism 4 can be a core power unit composed of a servo motor or a stepper motor combined with a reducer, which ensures that the installation plate 2 can smoothly complete a 180-degree fixed-angle rotation. In addition, to further improve the cleaning effect, a vibration module can be integrated into the rotating driving mechanism 4, such as a simple vibration motor composed of an eccentric wheel and a motor. The logic control of this module works in coordination with the rotating drive: when the infrared sensor triggers the cleaning instruction and the rotating mechanism flips the dust accumulation surface to the downward cleaning station, the control system can simultaneously or delay start the vibration module to generate high-frequency low-amplitude mechanical vibration. The vibration is transmitted to the entire photovoltaic panel 3 through the installation plate 2, which can effectively loosen and shake off stubborn attachments (such as dry bird droppings, viscous tree gum or compacted snow blocks) that have adhesion and are difficult to remove by gravity alone, thereby realizing a performance leap from "passive shedding" to "active removal", greatly enhancing the adaptability and cleaning thoroughness of the self-cleaning system.

[0037] More preferably, the support frame 102 and the adjusting plate 101 are hinged, the support frame 102 is connected with an arc-shaped rack 6, the arc-shaped rack 6 is arranged along the direction of gravity, the arc-shaped rack 6 has a plurality of meshing teeth, the plurality of meshing teeth are sequentially distributed along the extension direction of the arc-shaped rack 6, the adjusting plate 101 has a gear 7, the gear 7 is engaged with the arc-shaped rack 6, so that the adjusting plate 101 can adjust the angle between the support frame 102 and the adjusting plate 101 along the arc-shaped rack 6. In the present application, the support frame 102 and the adjusting plate 101 are hinged and cooperated with the design of the arc-shaped rack 6 and the gear 7, which realizes stepless, accurate and firm adjustment of the inclination angle of the photovoltaic panel 3. The user can rotate the gear 7 to move the different meshing teeth on the arc-shaped rack 6 extending along the direction of gravity, so as to easily and continuously change the included angle between the adjusting plate 101 (and the entire power generation unit thereon) and the support frame 102. This function allows the inclination angle of the photovoltaic panel 3 to be seasonally or even more frequently optimized according to the geographical latitude of the installation site, different seasonal changes and the daily solar elevation angle, so as to ensure that the sunlight is as straight as possible. The panel surface maximizes the light absorption efficiency and the overall power generation throughout the year. Compared with the traditional cumbersome angle fixing method which requires tools or multiple people to cooperate, this design only needs one person to quickly complete the adjustment, the operation is extremely simple, and the operation intensity and time cost are greatly reduced. At the same time, the multi-tooth meshing characteristics of the gear 7 and the rack ensure that strong locking force and structural stability can be obtained at any angle, which can effectively resist external forces such as wind load and snow load, prevent the angle from changing automatically, and ensure the safety and reliability of the power generation device in various harsh weather conditions.

[0038] More preferably, the rotatable and cleanable photovoltaic power generation device further comprises a flushing device 8, which comprises a frame body 801, at least one first water pipe 802 and at least one spray head 803. The frame body 801 is installed directly below the adjusting plate 101 and the support frame 102, one end of the frame body 801 is hinged to the support frame 102, and the other end of the frame body 801 is engaged with the arc-shaped rack 6, so that the frame body 801 can move along the arc-shaped rack 6 to approach or move away from the mounting plate 2. The first water pipe 802 is installed on the frame body 801, and the spray head 803 is in communication with the first water pipe 802 and faces the mounting plate 2. When the infrared sensor detects that the surface of the photovoltaic panel 3 is heavily contaminated, and it is still difficult to clean thoroughly by means of rotation and vibration alone (such as encountering a large amount of dust or sticky dirt), the system will start the flushing program. First, the rotating drive mechanism 4 will act to rotate the photovoltaic panel 3 to a pre-set inclination angle that is most suitable for flushing (for example, close to vertical or turning the originally upward-facing power generation photovoltaic panel 3 by 180 degrees to face the spray head 803). Then, the flushing device 8 works (the frame body 801 is adjusted to the flushing angle during installation or an additional drive mechanism is added for automatic adjustment), and the drive mechanism can drive the frame body 801 to move along the track of the arc-shaped rack 6 towards the mounting plate 2 until it reaches a pre-determined optimal flushing position where the spray head 803 can cover the entire panel surface. Then, the water pump is started, and water is sprayed out of the spray head 803 through the first water pipe 802 at high pressure to accurately flush the surface of the photovoltaic panel 3. After flushing, the frame body 801 can be reset along the arc-shaped rack 6 away from the mounting plate 2 to avoid interference with the rotation of the photovoltaic panel 3.

[0039] This design solves the limitations of single rotation and vibration cleaning mode. High-pressure water jet can effectively flush away all types of attachments such as dust, mud, bird droppings, etc., especially in rainy and muddy or dry and sandy areas, to ensure that the photovoltaic panel 3 is thoroughly cleaned and the maximum power generation efficiency is restored. The movement of the frame body 801 along the arc-shaped rack 6 is the key to the design. It allows the distance between the spray head 803 and the photovoltaic panel 3 to be optimally adjusted according to cleaning needs: closer for higher flushing pressure and greater cleaning strength; farther for larger flushing coverage area to ensure no dead angles. This adaptive ability avoids the problems of insufficient pressure or incomplete coverage that may exist in fixed flushing devices 8, achieving an optimal balance between water consumption and cleaning effect. It is worth noting that the hinged and moving track of the frame body 801 cleverly utilizes the existing support frame 102 and arc-shaped rack 6 structure, without the need for additional complex support and movement systems, making the entire device compact in structure, high in reliability and low in modification cost.

[0040] More preferably, the spray head 803 is a rotary spray head. Fixed spray heads 803 are prone to have flushing dead zones and uneven pressure, leading to over-flushing in some areas and under-flushing in others. Rotary spray heads, by virtue of their continuous rotary motion, can expand their effective flushing range from a fixed point or line to a dynamically scanned sector or circular plane. This means that a single rotary spray head can cover an area much larger than its physical size, ensuring that the water flow can uniformly and without dead zones scan the entire surface of the photovoltaic panel 3, achieving the same or even better cleaning effect under the premise of significantly reducing water consumption per unit area. Compared to a solution that requires multiple fixed spray heads 803 to work simultaneously to achieve full coverage, using fewer rotary spray heads can complete the task, which directly reduces the water pump energy consumption and water resource consumption of the system, in line with the green and environmentally friendly concept of photovoltaic power generation, especially suitable for water-scarce areas. The dynamic impact generated by the rotary spray head is more effective than the static impact of the fixed spray head 803. The water jet continuously impacts the panel surface at a certain angle and frequency, better "cutting" and "peeling" the adherent stains (such as dry mud, bird droppings), thereby achieving a more thorough cleaning effect in a shorter time, further improving the efficiency of the entire automated cleaning process.

[0041] More preferably, the support frame 102 is connected to the frame body 801 through a hinged shaft 9, the hinged shaft 9 being a second water pipe, one end of the first water pipe 802 being in communication with the second water pipe, at least one end of the second water pipe being connected with a sleeve 10, the sleeve 10 being connected to the support frame 102 and being relatively stationary with the support frame 102, one end of the sleeve 10 being in communication with the second water pipe, the other end of the sleeve 10 being in communication with the external environment, the sleeve 10 being used to connect the cleaning source. This design combines the functions of "rotary hinge" and "water supply" in the same component, completely avoiding the need for additional long water supply hoses or complex rotary joints. This greatly simplifies the overall mechanical structure, reduces the number of parts, fundamentally reduces the risk of potential leaks and mechanical failures, and improves the overall reliability and durability of the system. The sleeve 10 is fixedly connected to the stationary support frame 102 and connected to the external water source, while the second water pipe (hinged shaft 9) rotates with the frame body 801. The interface between the two is dynamically sealed by a sealing ring, ensuring that high-pressure water can be continuously and stably supplied to the rotary spray head regardless of the position of the frame body 801 along the arc-shaped rack 6. This design can effectively prevent the water pipe from being exposed to the outdoors for a long time, suffering from ultraviolet aging, extreme temperature changes, wind and rain erosion, or accidental mechanical damage, prolonging the service life of the key components and enhancing the adaptability and stability of the entire device in various harsh environments.

[0042] More preferably, the horizontal opposite sides of the opening 111 are provided with rails 11 parallel to the horizontal and mounted on the adjusting plate 101, the rails 11 extend upwardly inclined relative to the horizontal plane, so that the horizontal height of the high end side of the rails 11 is greater than that of the low end side of the rails 11, and the rails 11 are further connected with brushes 12, the two ends of each brush 12 are respectively connected with one of the rails 11 in sliding connection, so that the brush 12 slides to one end of the rails 11 under the action of gravity. When there is a small amount of dust on the surface of the photovoltaic panel 3, the user can manually adjust the angle between the support frame 102 and the adjusting plate 101 (i.e. rotate the gear 7 to change the inclination of the adjusting plate 101 along the arc-shaped rack 6), thereby changing the inclination direction of the rails 11. This operation enables the brush 12 installed on the rails 11 by gravity to automatically slide from one end to the other end. During the sliding process, the brush 12 completely scrapes the surface of the photovoltaic panel 3, effectively removing loose contaminants such as dust and pollen. This mode relies purely on mechanical structure and gravity driving, without the need for water and electricity consumption, providing the user with a zero-energy, low-cost, easy-to-operate daily maintenance means, greatly improving the practicality and economy of the equipment.

[0043] Notably, when the system is integrated with a solar tracking control system, the brush 12 has the potential for automatic cleaning. The control system drives the adjusting plate 101 to always face the sun, and its angle continuously changes with the sun's trajectory throughout the day. At a certain predetermined angle, the inclination direction of the rails 11 is combined with gravity to drive the brush 12 to automatically slide down. This means that without additional triggering instructions, only the natural angle change generated by daily tracking of the sun can ensure that the brush 12 at least completes one full coverage sliding cleaning. This cleaning based on the tracking function will perfectly integrate power generation and maintenance, achieving all-weather, fully automatic, zero additional energy consumption intelligent operation and maintenance, greatly improving the autonomy and economy of the system.

[0044] More preferably, the mounting plate 2 is provided with a groove 13, and the infrared sensor 5 is arranged in the groove 13, the groove 13 is used for accommodating the adhering matter. The open-mounted sensor is easily affected by rainwater, strong wind or accidental factors (such as single-piece bird droppings), resulting in false judgments. The groove 13 is a protected dust collection area that can stably collect representative falling dust, and its dust accumulation speed is consistent with the entire panel surface and is not easily disturbed by accidental factors. This ensures that the data read by the sensor is continuous, stable and can truly reflect the overall pollution level, greatly reducing the probability of false positives and false negatives.

[0045] More preferably, the opposite two sides of the mounting plate 2 are connected with photovoltaic panels 3, and the mounting plate 2 is provided with multiple mounting plates 2 which are linearly distributed and collectively cover the opening 111, and each mounting plate 2 is connected with a rotary driving mechanism 4 so that each mounting plate 2 can rotate independently. When a certain module needs to be cleaned due to dust accumulation, the control system can drive the mounting plate 2 to rotate so that the back side continues to generate electricity while the front side enters the cleaning state. The modular design significantly enhances the reliability of the system, and a single module failure does not affect the overall operation, and is more convenient to maintain, providing a solution for large photovoltaic power stations.

[0046] More preferably, the lower side of the mounting plate 2 is provided with a light-reflecting plate 15, and the mounting plate 2, the frame body 801 and the light-reflecting plate 15 are sequentially distributed along the direction of gravity, and the light-reflecting plate 15 is used to reflect light to the photovoltaic panel 3 close to the light-reflecting plate 15. The reflected light increases the irradiance of the back photovoltaic panel 3, making full use of environmental light resources. On the other hand, the light-reflecting plate 15 is integrated with the original washing frame body 801, without the need for additional space, and the structure is compact. Especially when multiple mounting plates 2 rotate independently, the back of the photovoltaic panel 3 at different angles can obtain reflected light gain, further amplifying the double-sided power generation advantage, realizing efficient use of scattered light and reflected light, and improving the energy output of the entire photovoltaic system.

[0047] More preferably, the mounting plate 2 is provided with a receiving cavity 14, and the receiving cavity 14 is distributed at one end of the opening 111, and the rotary driving mechanism 4 is accommodated in the receiving cavity 14. This design embeds the motor, reducer and other precision driving components, avoiding rain erosion, dust accumulation or physical collision damage caused by external exposure, greatly prolonging the service life of the equipment. Moreover, the driving mechanism is directly embedded in the mounting plate 2 body, which also shortens the distance between the power output shaft and the rotation center, reduces transmission loss and structural vibration, and makes the mounting plate 2 rotation more accurate and stable. This integrated design not only enhances the reliability of the equipment, but also maintains a simple appearance, suitable for various outdoor photovoltaic installation scenes.

[0048] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0049] In addition, the terms "first", "second", etc. are used only for the purpose of description, and should not be understood as indicating or implying relative importance or an indicated number of technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0050] The above description is merely a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of various changes or replacements within the technical scope disclosed by the present application, and these should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A photovoltaic power generation device that can be rotated and cleaned, characterized in that: include: A fixing frame (1), the fixing frame (1) comprising an adjustment plate (101) and a support frame (102), the adjustment plate (101) and the support frame (102) being arranged at intervals, the adjustment plate (101) having an opening (111), the opening (111) penetrating the adjustment plate (101) along a wall thickness direction of the adjustment plate (101); at least one mounting plate (2), the mounting plate (2) being connected to the adjustment plate (101) and covering the opening (111); A photovoltaic panel (3), the photovoltaic panel (3) being mounted on the mounting plate (2) and supported by the mounting plate (2); a rotary drive mechanism (4), the rotary drive mechanism (4) being mounted on the adjustment plate (101) and supported by the adjustment plate (101), the rotary drive mechanism (4) being drivingly connected to the mounting plate (2), the rotary drive mechanism (4) being used to drive the mounting plate (2) to rotate so that two opposite sides of the mounting plate (2) face upward in rotation; An infrared sensor (5) is mounted on the mounting plate (2), the infrared sensor (5) is electrically connected to the rotary drive mechanism (4), and the infrared sensor (5) is used to monitor dust accumulation on the surface of the photovoltaic panel (3) or the mounting plate (2).

2. A rotatable and cleanable photovoltaic power generation device according to claim 1, characterized in that: The support frame (102) and the adjustment plate (101) are hinged, the support frame (102) is connected with an arc-shaped rack (6), the arc-shaped rack (6) is extended along the direction of gravity, the arc-shaped rack (6) has a plurality of meshing teeth, and the plurality of meshing teeth are distributed in sequence along the extension direction of the arc-shaped rack (6), the adjustment plate (101) has a gear (7), and the gear (7) is meshed with the arc-shaped rack (6), so that the adjustment plate (101) can adjust the angle between the support frame (102) and the adjustment plate (101) along the arc-shaped rack (6).

3. A rotatable and cleanable photovoltaic power generation device according to claim 2, characterized in that: The photovoltaic power generation device capable of rotational cleaning further comprises a flushing device (8), the flushing device (8) comprising a frame (801), at least one first water pipe (802) and at least one nozzle (803), the frame (801) being mounted directly below the adjustment plate (101) and the support frame (102), one end of the frame (801) being hinged to the support frame (102), and the other end of the frame (801) being engaged with the arc-shaped rack (6) so that the frame (801) can move closer to or farther from the mounting plate (2) along the arc-shaped rack (6); the first water pipe (802) being mounted on the frame (801), and the nozzle (803) being connected to the first water pipe (802) and facing the mounting plate (2).

4. A rotatable and cleanable photovoltaic power generation device according to claim 3, characterized in that: The nozzle (803) is a rotating nozzle.

5. The rotatable and cleanable photovoltaic power generation device according to claim 3, characterized in that: The support frame (102) is connected to the frame body (801) via a hinge shaft (9), the hinge shaft (9) is a second water pipe, one end of the first water pipe (802) is connected to the second water pipe, at least one end of the second water pipe is connected to a sleeve (10), the sleeve (10) is connected to the support frame (102) and is relatively stationary with the support frame (102), one end of the sleeve (10) is connected to the second water pipe, and the other end of the sleeve (10) is connected to the external environment, and the sleeve (10) is used to connect to a cleaning source.

6. The rotatable and cleanable photovoltaic power generation device according to claim 2, characterized in that: Guide rails (11) are provided in parallel on two horizontally opposite sides of the opening (111) and are mounted on the adjustment plate (101). The guide rails (11) extend upwardly and obliquely relative to the horizontal plane, so that the horizontal height of the high end side of the guide rail (11) is greater than the horizontal height of the low end side of the guide rail (11). The guide rail (11) is also connected to a brush (12), and the two ends of the brush (12) are respectively slidably connected to one of the guide rails (11), so that the brush (12) slides down to one end of the guide rail (11) under the action of gravity.

7. The rotatable and cleanable photovoltaic power generation device according to claim 1, characterized in that: The mounting plate (2) is provided with a groove (13), the infrared sensor (5) is arranged in the groove (13), and the groove (13) is used to accommodate attachments.

8. The rotatable and cleanable photovoltaic power generation device according to claim 3, characterized in that: Photovoltaic panels (3) are connected to two opposite sides of the mounting plate (2), a plurality of mounting plates (2) are provided, the plurality of mounting plates (2) are linearly distributed and jointly cover the opening (111), and the plurality of mounting plates (2) are each connected to a rotation drive mechanism (4) so ​​that each mounting plate (2) can rotate independently.

9. The rotatable and cleanable photovoltaic power generation device according to claim 1, characterized in that: The mounting plate (2) is provided with a receiving cavity (14), the receiving cavity (14) is distributed at one end of the opening (111), and the rotary drive mechanism (4) is received in the receiving cavity (14).

10. The rotatable and cleanable photovoltaic power generation device according to claim 8, characterized in that: A reflective plate (15) is provided below the mounting plate (2); the mounting plate (2), the frame (801) and the reflective plate (15) are sequentially distributed along the direction of gravity; the reflective plate (15) is used to reflect light onto the photovoltaic panel (3) close to the reflective plate (15).

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