A protection device for photovoltaic solar panels

Abstract

This application discloses a protective device for photovoltaic solar panels, relating to the field of photovoltaic module technology. The device includes a base, a photovoltaic module, and a protective component. The base has a mounting column, and the top of the mounting column is hinged to a mounting plate via a hinge shaft. The photovoltaic module is mounted on the mounting plate. The photovoltaic module includes photovoltaic cells and a photovoltaic frame, with the photovoltaic cells installed within the photovoltaic frame. The protective component includes a housing and a winding roller. The housing is positioned on the photovoltaic frame, and the winding roller is horizontally positioned within the housing, with both ends rotatably connected to the housing. A winding unit is located on one side of the housing, and the output shaft of the winding unit passes through the housing and is coaxially connected to the winding roller. The winding roller is parallel to the hinge shaft, and a shielding cloth is wound onto the winding roller. The inner end of the shielding cloth is fixed to the winding roller, and the outer end of the shielding cloth extends out of the housing through an outlet. A slider is connected to the outer end of the shielding cloth, and the slider is slidably positioned on the photovoltaic frame. This provides reliable protection for the photovoltaic cells.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic module technology, and in particular to a protective device for photovoltaic solar panels. Background Technology

[0002] With the rapid development of the photovoltaic industry, photovoltaic modules have been widely used in various outdoor scenarios. As the core component of photovoltaic power generation, photovoltaic cells are exposed to the outdoor environment for extended periods, making them susceptible to damage from external factors such as heavy rain and dust accumulation. This can lead to problems like damage, short circuits, and aging, directly reducing the power generation efficiency of photovoltaic modules, shortening their lifespan, and ultimately increasing the operation and maintenance costs of photovoltaic systems. Therefore, how to effectively protect photovoltaic cells through specialized protective structures to prevent damage from the external environment has become a critical issue that urgently needs to be addressed in the current research and development of photovoltaic protection equipment.

[0003] Currently, the protective structures for existing photovoltaic solar panels have significant deficiencies in their specialized protective designs for photovoltaic cells, failing to provide comprehensive and reliable protection. Existing protective structures are mostly simple fixed shading or outer casing protection, lacking flexible adjustable shading mechanisms. This prevents them from adapting to weather changes and flexibly switching between shading and normal sunlight exposure. Some structures with shading functions have insufficient outer casing protection, are inconvenient to install, and the shading cloth is prone to shifting and wrinkling, failing to fully cover the photovoltaic cells and provide complete protection. This not only fails to effectively protect the photovoltaic cells but may also lead to damage to the shading cloth, exposing them to harsh environments and further accelerating cell wear. Therefore, these structures cannot meet the actual needs for long-term protection of photovoltaic cells. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0005] This application provides a protective device for a photovoltaic solar panel, including a base, a photovoltaic module, and a protective component. The base has a mounting column, and a mounting plate is hinged to the top of the mounting column via a hinge shaft. The photovoltaic module is mounted on the mounting plate. The photovoltaic module includes photovoltaic cells and a photovoltaic frame, with the photovoltaic cells installed within the photovoltaic frame. The protective component includes a housing and a winding roller. The housing is disposed on the photovoltaic frame, and the winding roller is horizontally disposed within the housing, with both ends of the winding roller rotatably connected to the housing. A winding unit is disposed on one side of the housing, and the output shaft of the winding unit passes through the housing and is coaxially connected to the winding roller. The winding roller is parallel to the hinge shaft, and a shielding cloth is wound onto the winding roller. The inner end of the shielding cloth is fixed to the winding roller, and the outer end of the shielding cloth extends out of the housing through an outlet. A slider is connected to the outer end of the shielding cloth, and the slider is slidably disposed on the photovoltaic frame.

[0006] Optionally, the base is provided with a first driving component, which drives the mounting column to rotate around a vertical axis; the mounting column is provided with a second driving component, which drives the mounting plate to rotate around a horizontal axis.

[0007] Optionally, side strips are provided on both sides of the shielding cloth, and the side strips are made of flexible magnetic material; magnetic strips are provided on both sides of the photovoltaic frame, and the magnetic strips are corresponding to the side strips.

[0008] Optionally, the outer casing is slidably mounted on the photovoltaic frame; two parallel winding rollers are provided inside the outer casing, and there are two winding units outside the casing, with the two winding units corresponding to the winding rollers; two oppositely arranged fabric outlets are provided on the outer casing, with the two fabric outlets corresponding to the shielding fabric on the two winding rollers.

[0009] Optionally, an adjustment component is provided on each side of the photovoltaic frame; the adjustment component includes a counterweight, a pull rope one, a pull rope two, and two pulleys; the counterweight is slidably disposed at the bottom of the photovoltaic frame, and the two pulleys are respectively disposed at both ends of the corresponding side of the photovoltaic frame; the counterweight is slidably disposed at the bottom of the photovoltaic frame; the two ends of the pull rope one are respectively connected to the counterweight and the outer shell, and the two ends of the pull rope two are respectively connected to the counterweight and the outer shell, and the pull rope one and the pull rope two are respectively wound around the two pulleys on the side away from each other; the mass of the counterweight is greater than the mass of the protective component.

[0010] Optionally, the mounting plate is provided with a water supply assembly; the water supply assembly includes a water tank, and two water pumping units are provided on the water tank, with the water pumping units corresponding to the sliders; the input end of the water pumping unit extends into the bottom of the water tank, and the output end of the water tank is connected to the interior of the corresponding slider through a water supply pipe; the slider is hollow inside, and multiple water outlets are provided at the bottom of the slider.

[0011] Optionally, a soft scraper is provided at the bottom of the housing, and the bottom of the soft scraper slides and adheres to the photovoltaic cell.

[0012] Optionally, the length direction of the soft scraper is the same as the axial direction of the winding roller, and the length of the soft scraper is the same as the width of the photovoltaic cell.

[0013] Optionally, the bottom of the outer casing is provided with an inner groove, the side soft strip is disposed in the inner groove, and there is a gap between the inner groove and the shielding cloth wound on the take-up roller.

[0014] Optionally, electromagnetic components are respectively provided on both sides of the photovoltaic frame, and the electromagnetic components are correspondingly provided with the slider; the slider is made of a magnetically conductive material.

[0015] One or more technical solutions provided in this application have at least the following technical effects or advantages: This photovoltaic solar panel protection device consists of a base, photovoltaic modules, and a protective assembly. The mounting column on the base is hinged to a mounting plate via a hinge shaft. The photovoltaic modules, consisting of photovoltaic panels encased in an aluminum alloy frame, are mounted on the mounting plate. The protective assembly includes a housing, a winding roller, and a shielding cloth. The housing is detachably mounted on the photovoltaic frame and staggered from the photovoltaic panels. The winding roller is driven by a bidirectional motor. The outer end of the shielding cloth is connected to a slider, which slides along a groove on the photovoltaic frame to fully cover the photovoltaic panels. This effectively blocks external factors such as rain and dust from corroding the photovoltaic panels, providing reliable protection. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the protective device for the photovoltaic solar power panel of the present invention; Figure 2 This is a schematic diagram of drive component one and drive component two of the protective device for the photovoltaic solar power panel of the present invention; Figure 3 This is a schematic diagram showing the position of the hinge shaft of the protective device for the photovoltaic solar power panel of the present invention; Figure 4 This is a schematic diagram of a protective component structure for the protective device of the photovoltaic solar power panel of the present invention; Figure 5 This is a schematic diagram showing the position of a winding roller in the protective device for photovoltaic solar panels according to the present invention. Figure 6 This is a schematic diagram showing the position of the side flexible strips of the protective device for the photovoltaic solar power panel of the present invention; Figure 7 This is a schematic diagram of the adjustment component structure of the protective device for the photovoltaic solar power panel of the present invention; Figure 8 This is a schematic diagram of another protective component structure of the protective device for the photovoltaic solar power generation panel of the present invention; Figure 9 This is a schematic diagram showing another winding roller position of the protective device for the photovoltaic solar power panel of the present invention; Figure 10 This is a schematic diagram of the water conveyance component structure of the protective device for the photovoltaic solar power generation panel of the present invention; Figure 11 This is a schematic diagram of the slider structure of the protective device for the photovoltaic solar power panel of the present invention; Figure 12 This is a schematic diagram showing the location of the soft scraper in the protective device for the photovoltaic solar panel of the present invention.

[0017] In the picture: 100. Base; 110. Mounting post; 111. Hinge shaft; 120. Mounting plate; 130. Drive assembly one; 131. Drive unit one; 132. Drive gear one; 133. Driven gear one; 140. Drive assembly two; 141. Drive unit two; 142. Drive gear two; 143. Driven gear two; 200. Photovoltaic module; 210. Photovoltaic cell; 220. Photovoltaic frame; 300. Protective components; 310. Housing; 311. Fabric outlet; 312. Soft scraper; 320. Take-up roller; 330. Masking fabric; 331. Side soft strip; 340. Slider; 341. Water outlet; 350. Take-up unit; 400. Adjustment assembly; 410. Counterweight; 420. Pull rope one; 430. Pull rope two; 440. Rope pulley; 500. Water supply assembly; 510. Water tank; 520. Pump unit; 530. Water supply pipe; 600. Electromagnetic components. Detailed Implementation

[0018] To facilitate understanding of the present invention, a more complete description of this application will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the invention. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the present invention may be more thorough and complete.

[0019] It should be noted that the terms "vertical," "horizontal," "up," "down," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0020] 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 invention pertains; the terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0021] Example: Figure 1 As shown, the protective device for the photovoltaic solar panel of this application includes a base 100, a photovoltaic module 200, and a protective component 300.

[0022] The base 100 is provided with a mounting post 110, and the top of the mounting post 110 is hinged to a mounting plate 120 via a hinge shaft 111.

[0023] The base 100 is made of high-strength carbon steel and is integrally cast. The bottom can be pre-drilled with expansion bolt mounting holes (not shown in the figure) to facilitate fixing the entire protective equipment to the ground, roof or other mounting bases, thereby improving the overall stability of the equipment and preventing the equipment from tipping over due to strong winds, heavy rain or other severe weather conditions. The hinge shaft 111 is made of stainless steel and is galvanized for rust prevention, which reduces corrosion during long-term outdoor use and extends the service life of the hinge structure. At the same time, grease can be applied to the hinge to reduce the frictional resistance when the mounting plate 120 rotates and ensure smooth angle adjustment.

[0024] Photovoltaic module 200 is mounted on mounting plate 120.

[0025] The photovoltaic module 200 includes photovoltaic cells 210 and a photovoltaic frame 220, with the photovoltaic cells 210 installed inside the photovoltaic frame 220. The photovoltaic frame 220 is made of aluminum alloy profile, combining lightweight and high strength, effectively wrapping and protecting the edges of the photovoltaic cells 210 to prevent damage from collisions and compression. The photovoltaic cells 210 are made of monocrystalline or polycrystalline silicon, with an anti-reflective coating on the surface, which can improve light absorption and thus improve photovoltaic power generation efficiency. A sealing strip (not shown in the figure) is provided between the photovoltaic cells 210 and the photovoltaic frame 220. The sealing strip is made of silicone material that is resistant to high and low temperatures and aging, effectively preventing rainwater, dust and other impurities from entering the interior of the photovoltaic frame 220, thus avoiding short circuits or aging of the photovoltaic cells 210.

[0026] A drive assembly 130 is provided on the base 100, which drives the mounting column 110 to rotate around the vertical axis.

[0027] A second drive assembly 140 is provided on the mounting column 110, which drives the mounting plate 120 to rotate around a horizontal axis.

[0028] The protective assembly 300 includes a housing 310 and a take-up roller 320.

[0029] The outer casing 310 is mounted on the photovoltaic frame 220, and is offset from the photovoltaic cell 210. The outer casing 310 can be injection molded from ABS engineering plastic, which has the characteristics of impact resistance, aging resistance, and waterproof and dustproof properties, and can effectively protect internal components such as the winding roller 320 and winding unit 350. In this embodiment, the outer casing 310 is detachably connected to the photovoltaic frame 220 by bolts, which facilitates the later inspection and replacement of internal components. At the same time, the size of the outer casing 310 is adapted to the photovoltaic frame 220 to ensure that the photovoltaic cell 210 is not blocked after installation, and the normal power generation of the photovoltaic module 200 is not affected.

[0030] The take-up roller 320 is horizontally mounted inside the housing 310, and both ends of the take-up roller 320 are rotatably connected to the housing 310. The take-up roller 320 can be made of seamless steel pipe with anti-corrosion treatment to prevent rust caused by moisture generated from long-term contact with the shielding cloth 330. Bearings (not shown in the figure) are provided at the connection points between the two ends of the take-up roller 320 and the housing 310. The bearings are sealed bearings, which can reduce the frictional resistance when the take-up roller 320 rotates, and at the same time prevent dust and rainwater from entering the bearing, ensuring smooth rotation of the take-up roller 320 and extending its service life.

[0031] A winding unit 350 is provided on one side of the housing 310, and the output shaft of the winding unit 350 passes through the housing 310 and is coaxially connected to the winding roller 320.

[0032] The winding unit 350 can be a bidirectional motor. This bidirectional motor can be a DC servo motor, which has the advantages of adjustable speed, high torque, and smooth start-stop, enabling precise control of the forward and reverse rotation of the winding roller 320, thereby achieving the stretching and winding of the shielding fabric 330. Simultaneously, the winding unit 350 is equipped with an angle sensor (not shown in the figure), which is electrically connected to the winding unit 350. This angle sensor can detect the rotation angle of the winding roller 320 in real time and feed the signal back to the controller (not shown in the figure), achieving precise control of the rotation angle of the winding roller 320, and thus controlling the stretching and winding of the shielding fabric 330. The winding radius; a sealing gasket (not shown in the figure) is provided between the winding unit 350 and the housing 310. The sealing gasket is made of rubber to prevent rainwater and dust from entering the housing 310 through the gap between the output shaft and the housing 310, thus protecting the winding unit 350 for normal operation; in addition, the winding unit 350 is equipped with a limit switch (not shown in the figure). When the shielding cloth 330 is fully stretched or fully wound, the limit switch triggers a signal to control the bidirectional motor to stop working, preventing motor overload or damage caused by excessive stretching or entanglement of the shielding cloth 330.

[0033] A shielding cloth 330 is wound on the take-up roller 320. The inner end of the shielding cloth 330 is fixed on the take-up roller 320, and the outer end of the shielding cloth 330 extends out of the outer shell 310 through the cloth outlet 311.

[0034] The outer end of the shielding cloth 330 is connected to a slider 340, which is slidably mounted on the photovoltaic frame 220.

[0035] Optionally, the outer end of the shielding cloth 330 can be fixed to the slider 340 by bolts.

[0036] Optionally, the mass of a single slider 340 is set to 100 grams to 200 grams.

[0037] It should be noted that the slider 340 in this embodiment can be made of engineering plastic material, which is lightweight and wear-resistant. The connection between the slider 340 and the shielding cloth 330 is made by sewing and bolting to ensure reliable connection and prevent the shielding cloth 330 from detaching from the slider 340 when stretched. The slider 340 can ensure that the shielding cloth 330 remains flat when stretched, preventing the shielding cloth 330 from shifting or wrinkling, and ensuring comprehensive shielding and protection of the photovoltaic panel 210.

[0038] The take-up roller 320 is arranged parallel to the hinge shaft 111. This arrangement ensures that the direction of movement of the shielding cloth 330 is consistent with the length direction of the photovoltaic panel 210 when it is stretched and wound up, avoiding the shielding cloth 330 from becoming skewed or tangled, and ensuring that the shielding cloth 330 can evenly cover the photovoltaic panel 210, thereby improving the protective effect.

[0039] The shielding cloth 330 can be a tear-resistant, waterproof, and dustproof composite fabric, such as PVC-coated Oxford cloth. This fabric has good tensile strength and weather resistance, effectively blocking rainwater erosion and dust adhesion. At the same time, it is soft, easy to roll up and stretch, and will not wrinkle or break due to long-term rolling. The inner end of the shielding cloth 330 is fixed to the take-up roller 320 by pressure strips and bolts, which is firmly fixed to prevent the shielding cloth 330 from separating from the take-up roller 320 during the rolling or stretching process.

[0040] It should be added that the two ends of the slider 340 can be slidably disposed on both sides of the photovoltaic frame 220 by sliding through the groove (this is only a preferred implementation method, but not the only one). For example, the photovoltaic frame 220 has T-shaped grooves (not shown in the figure) on both sides, and the bottom of the slider 340 is provided with a corresponding T-shaped slide rod (not shown in the figure). The bottom of the T-shaped slide rod can be embedded with a ball, and the T-shaped slide rod is slidably embedded in the T-shaped groove. In addition, the two ends of the T-shaped groove can be provided with slot openings that communicate with the external space of the photovoltaic frame 220. Some dirt in the T-shaped groove can be squeezed out by the T-shaped slide rod through the slot openings. The matching method of the T-shaped groove and the T-shaped slide rod is a common structure in the prior art, and will not be described in detail here.

[0041] The aforementioned combination of the T-shaped groove and the T-shaped slide bar restricts the sliding direction of the slider 340, preventing it from deviating during sliding and improving its stability. The ball bearings embedded at the bottom of the T-shaped slide bar convert sliding friction into rolling friction, significantly reducing the frictional resistance of the slider 340 and ensuring smoother stretching and winding of the shielding cloth 330. The groove opening enables the T-shaped groove to self-clean, preventing dust and debris from accumulating inside and preventing the slider 340 from jamming. It also reduces wear on the groove and slide bar, extending their service life.

[0042] It should be noted that when the slider 340 slides along the length of the photovoltaic frame 220, the width of the shielding cloth 330 is greater than the width of the photovoltaic panel 210, the length of the shielding cloth 330 is greater than the length of the photovoltaic panel 210, and the shielding cloth 330 can cover the photovoltaic panel 210; preferably, when the shielding cloth 330 is stretched to cover the photovoltaic panel 210, the shielding cloth 330 can also cover the T-shaped grooves on both sides of the photovoltaic frame 220.

[0043] The size design of the shielding cloth 330 ensures that it completely covers the photovoltaic panel 210, preventing any area of ​​the photovoltaic panel 210 from being exposed to the external environment, thus achieving comprehensive protection. The design of the shielding cloth 330 covering the T-shaped sliding groove can prevent rainwater, dust and other impurities from entering the T-shaped sliding groove, further protecting the sliding performance of the sliding groove and the sliding rod. At the same time, it prevents impurities from entering the photovoltaic frame 220 through the sliding groove, protecting the normal operation of the photovoltaic panel 210. This preferred solution further improves the protective integrity and practicality of the protective component 300.

[0044] In addition, this solution can also add a controller (not shown in the figure). The controller is electrically connected to drive unit 131, drive unit 2141, winding unit 350, angle sensor, and limit switch to realize automated control of the equipment. The controller can preset the change law of solar azimuth and altitude angles, and automatically control drive unit 131 and drive unit 2141 to adjust the orientation and tilt angle of photovoltaic module 200 to maximize the utilization of solar energy. At the same time, the controller can be connected to a weather sensor (not shown in the figure). When severe weather such as heavy rain is detected, the controller automatically controls the winding unit 350 to work, stretching the shading cloth 330 to protect the photovoltaic panel 210. After the weather improves, the shading cloth 330 is automatically rolled up to ensure that the photovoltaic module 200 generates electricity normally, further improving the intelligence level and practicality of the equipment, and solving the technical defects of existing photovoltaic protection equipment that requires manual operation and has a low level of intelligence.

[0045] The power supply for all electrical components of this device (drive unit 131, drive assembly 140, winding unit 350, controller, angle sensor, limit switch, weather sensor, etc.) originates from the device itself, requiring no external power source. Specifically, it is powered by a matching energy storage battery (not shown in the figure). This energy storage battery is electrically connected to the photovoltaic module 200. The electrical energy generated by the photovoltaic module 200 during operation is processed by the photovoltaic charge / discharge controller (not shown in the figure) (including rectification, voltage regulation, overcharge and over-discharge protection, etc.) and then stably charged into the energy storage battery for storage. When each electrical component needs to operate, the energy storage battery releases electrical energy to supply it, forming a closed-loop power supply system of "photovoltaic power generation, electrical energy processing, battery energy storage, and component power supply." This not only reduces the operating cost of the device and eliminates reliance on external power supply facilities, but also enhances the device's independence and outdoor adaptability, making it particularly suitable for remote outdoor installation scenarios without external power sources.

[0046] To clearly illustrate the above embodiment, as Figure 2 and Figure 3 As shown, in one embodiment of this application, the drive assembly 130 includes a drive unit 131, a drive gear 132, and a driven gear 133.

[0047] The drive unit 131 is mounted on the base 100, and the output shaft of the drive unit 131 is set horizontally.

[0048] It should be noted that the drive unit 131 can be fixed to the mounting base 100 by bolts. The mounting base and the base 100 are integrally formed, which improves the stability of the drive unit 131 during installation and prevents it from shaking during operation. The horizontal setting of the output shaft can ensure that the drive gear 132 and the driven gear 133 are on the same horizontal plane, ensuring that the two mesh tightly and avoiding transmission jamming or gear wear caused by meshing misalignment. At the same time, it is convenient to inspect and maintain the gear transmission structure in the future.

[0049] The drive gear 132 is coaxially mounted on the output shaft of the drive unit 131, and the driven gear 133 is sleeved on the mounting post 110, with the drive gear 132 and the driven gear 133 meshing.

[0050] Among them, the driving gear 132 and the driven gear 133 are meshing helical gears, and the driving unit 131 is a stepper motor.

[0051] The second drive assembly 140 includes a second drive unit 141, a second drive gear 142, and a second driven gear 143.

[0052] Drive unit 2 141 is mounted on mounting post 110, and the output shaft of drive unit 2 141 is set horizontally.

[0053] The second drive gear 142 is coaxially mounted on the output shaft of the second drive unit 141. The top of the second driven gear 143 is connected to the bottom of the mounting plate 120, and the bottom of the second driven gear 143 meshes with the second drive gear 142. The axis of the second driven gear 143 is set horizontally.

[0054] Among them, drive unit 2 141 is a stepper motor.

[0055] Mounting post 110 is hinged to mounting plate 120 via a horizontally arranged hinge shaft 111. The hinge shaft 111 coaxially passes through driven gear 143 and is fixedly connected to driven gear 133, so that the two (hinge shaft 111 and driven gear 133) rotate synchronously under the drive of drive unit 141 and drive gear 142.

[0056] It should be noted that drive unit 131 and drive unit 2 141 can be the same type of stepper motor. The motor is equipped with an angle sensor (not shown in the figure). The angle sensor is electrically connected to the stepper motor and can detect the rotation angle of the mounting column 110 or mounting plate 120 in real time and feed the signal back to the controller (not shown in the figure) to achieve precise control of the rotation angle of the mounting column 110 or mounting plate 120. This facilitates the adjustment of the orientation of the photovoltaic module 200 according to the change of the sun's position and maximizes the reception of solar radiation.

[0057] It should be added that, such as Figure 3 As shown, the driven gear 143 may not be a complete circular gear, and the top of the driven gear 143 may be a flat surface, which may abut against the bottom surface of the mounting plate 120.

[0058] like Figure 6 and Figure 8 As shown, side strips 331 are provided on both sides of the shielding cloth 330.

[0059] Among them, the side soft strip 331 can be made of flexible magnetic material, such as flexible rubber magnetic strip.

[0060] Magnetic strips (not shown in the figure) can be provided on both sides of the photovoltaic frame 220, and the magnetic strips are provided in correspondence with the side soft strips 331.

[0061] The magnetic strip can be a magnetic steel strip.

[0062] It should be noted that the side strips 331 are rolled up inside the housing 310 along with the shielding cloth 330. The two side strips 331 are located on the side of the shielding cloth 330 that is closer to and farther away from the winding unit 350, respectively, and the side strips 331 are located above the photovoltaic frame 220, so that during the stretching of the shielding cloth 330, the side strips 331 that extend out of the housing 310 can fit against the two sides of the photovoltaic frame 220.

[0063] It should be added that the magnetic strip and the side soft strip 331 are magnetically attracted. The magnetic strips on both sides of the photovoltaic frame 220 are located on the side of the photovoltaic frame 220 that is closer to and farther away from the winding unit 350, respectively. The magnetic strips extend along the length of the photovoltaic frame 220. The length of the magnetic strips can be greater than the length of the photovoltaic sheet 210. The magnetic strips can be directly set on the photovoltaic frame 220 or embedded in the surface of the photovoltaic frame 220. The magnetic strips are set parallel to the T-shaped slide groove.

[0064] Optionally, the unit length adsorption force between the side soft strip 331 and the magnetic strip is 0.5 N / cm to 2.0 N / cm, and the overall total adsorption force is controlled between 10 N and 50 N.

[0065] Understandably, the flexible rubber magnetic strip combines flexibility and magnetism, and its soft texture allows it to be smoothly rolled up and stretched along with the shielding cloth 330 without stiffness or breakage during rolling, thus meeting the movement requirements of the shielding cloth 330. Simultaneously, the flexible rubber magnetic strip has excellent weather resistance, adapting to harsh outdoor environments such as high and low temperatures, rain, and snow. It is not prone to aging or deformation, and its lightweight nature does not increase the rolling load on the shielding cloth 330 or the sliding resistance of the slider 340. The magnetic strip's placement allows it to magnetically engage with the side soft strip 331, ensuring that the shielding cloth 330 adheres tightly to the photovoltaic frame 220 after stretching, enhancing the sealing and protection effect. The corresponding placement of the magnetic strip and the side soft strip 331 ensures even distribution of the adsorption force, preventing gaps caused by weak local adsorption, and facilitating precise positioning of the shielding cloth 330, preventing displacement during stretching.

[0066] It should be noted that the protective component 300 in this embodiment is located on one side of the photovoltaic frame 220. When the shielding cloth 330 in the protective component 300 needs to protect the photovoltaic panel 210 (such as at night, in rain or snow), the tilt angle of the photovoltaic frame 220 needs to be controlled by the drive component 130 and the drive component 240 so that the protective component 300 is located on the upper part of the photovoltaic panel 210. At this time, the winding unit 350 is controlled to rotate and release the shielding cloth 330. Under the gravity of the slider 340, the slider 340 drives the shielding cloth 330 to unfold and cover the photovoltaic panel 210.

[0067] Furthermore, such as Figure 7 , Figure 8 and Figure 9 As shown, in another embodiment of this application, the housing 310 is slidably disposed on the photovoltaic frame 220.

[0068] It should be added that the sliding connection between the outer shell 310 and the photovoltaic frame 220 is the same as the sliding connection between the slider 340 and the photovoltaic frame 220. The two ends of the outer shell 310 can be slidably disposed on both sides of the photovoltaic frame 220 by means of sliding grooves and sliding rods. For example, T-shaped sliding grooves are opened on both sides of the photovoltaic frame 220 (not shown in the figure), and T-shaped sliding rods (not shown in the figure) are respectively provided at the bottom of the outer shell 310 and the slider 340. Ball bearings can be embedded at the bottom of the T-shaped sliding rods. The T-shaped sliding rods are slidably embedded in the T-shaped sliding grooves. At this time, the slider 340 and the outer shell 310 are slidably disposed in the same T-shaped sliding grooves. In addition, slot openings communicating with the external space of the photovoltaic frame 220 can be opened at both ends of the T-shaped sliding grooves. Some dirt in the T-shaped sliding grooves can be squeezed out by the T-shaped sliding rods through the slot openings.

[0069] An adjustment component 400 is installed on each side of the photovoltaic frame 220.

[0070] It should be noted that the two adjustment components 400 are located on the photovoltaic frame 220, one near and one far from the winding unit 350, respectively, and the two adjustment components 400 have the same structure.

[0071] Understandably, the symmetrically arranged and structurally consistent adjustment components 400 can achieve synchronous traction at both ends of the housing, ensuring that the housing 310 slides smoothly along the length of the photovoltaic frame 220, avoiding faults such as offset and jamming; at the same time, the consistent structure can improve the versatility of the components, reduce production and maintenance costs, and facilitate mass production and fault diagnosis in the later stage.

[0072] The adjustment assembly 400 includes a counterweight 410, a first pull rope 420, a second pull rope 430, and two pulleys 440.

[0073] The counterweight 410 slides along the length of the photovoltaic frame 220 at the bottom of the photovoltaic frame 220, and two pulleys 440 are respectively set at both ends of the corresponding side of the photovoltaic frame 220.

[0074] The counterweight 410 is slidably mounted at the bottom of the photovoltaic frame 220. It can generate a downward pulling force using its own weight to provide power for the movement of the outer shell 310. At the same time, the sliding setting ensures that the counterweight 410 can move synchronously with the outer shell 310 to achieve dynamic balance. Two pulleys 440 are respectively mounted at both ends of the side of the photovoltaic frame 220. They can change the direction of the force on the pull rope, converting the downward gravity of the counterweight 410 into a pulling force to move the outer shell 310. The pulleys 440 adopt a rolling friction structure, which can reduce the frictional resistance between the pull rope (pull rope one 420, pull rope two 430) and the pulleys 440, reduce the wear of the pull rope, extend the service life of the adjustment component 400, and ensure smooth force transmission.

[0075] The two ends of the pull rope 420 are connected to the counterweight 410 and the outer shell 310 respectively, and the two ends of the pull rope 430 are connected to the counterweight 410 and the outer shell 310 respectively. The pull rope 420 and the pull rope 430 are respectively wound around the two pulleys 440 on the opposite sides.

[0076] Both pull rope 1 (420) and pull rope 2 (430) are stainless steel ropes.

[0077] The connection between pull rope 1 420 and pull rope 2 430 forms a symmetrical traction structure, ensuring that the tension at both ends of the outer shell 310 is consistent in magnitude and direction, thus preventing the outer shell 310 from tilting or jamming during sliding. Pull rope 1 420 and pull rope 2 430 are wound around the opposite side of the rope wheel 440, ensuring that the direction of the pull rope tension is consistent with the sliding direction of the outer shell 310, maximizing the transmission of the weight of the counterweight 410, improving traction efficiency, and at the same time preventing the two pull ropes from tangling together, thus preventing transmission failure.

[0078] It should be added that both the counterweight 410 and the outer casing 310 can be equipped with rope posts. The rope posts extend from the corresponding side of the photovoltaic frame 220, and the corresponding ends of the pull rope 1 420 and pull rope 2 430 are tied to the corresponding rope posts. The pull rope 1 420 and pull rope 2 430 can form a circle, and the two rope wheels 440 are located inside the circle. The pull rope 1 420 and pull rope 2 430 are located on the same vertical plane. The tethering post facilitates the fixing and disassembly of pull rope 1 420 and pull rope 2 430. Simultaneously, the tethering post extends beyond the side of the photovoltaic frame 220, preventing the pull ropes from contacting the photovoltaic frame 220, T-shaped grooves, or other structures, thus preventing wear on the pull ropes or obstructing the normal operation of the sliding structure. Pull rope 1 420 and pull rope 2 430 form a circle with the pulley 440 located within the circle, creating a stable traction closed loop, ensuring stable force transmission and preventing the pull ropes from falling off. Since both are located on the same vertical plane, the direction of the force is consistent, preventing lateral force from causing the outer casing 310 to shift or jam, further improving the transmission stability of the adjustment component 400.

[0079] It should be noted that the counterweight 410 and the bottom surface of the photovoltaic frame 220 can be slidably connected by a damping slide rail (not shown in the figure, but refer to the damping slide rails used in existing sliding doors, drawers, etc.); in addition, the width of the mounting plate 120 can be less than the distance between the two counterweights 410, or the mounting plate 120 can be provided with a slide for the counterweights 410 to slide, so as to avoid the mounting plate 120 from hindering the sliding of the counterweights 410; the specific structure will not be described in detail here.

[0080] The mass of counterweight 410 is greater than the mass of protective component 300.

[0081] Optionally, the mass of the counterweight 410 is 1.2 to 2.0 times the total mass of the protective assembly 300, preferably 1.5 times.

[0082] The housing 310 has two parallel take-up rollers 320 inside, and there are two take-up units 350 outside the housing, with the two take-up units 350 corresponding to the take-up rollers 320.

[0083] The outer casing 310 has two oppositely arranged fabric outlets 311, and the two fabric outlets 311 are correspondingly arranged with the shielding cloths 330 on the two take-up rollers 320.

[0084] It should be noted that in this embodiment, the two sliders 340 can be slidably mounted on the photovoltaic frame 220 through the same T-shaped groove (not shown in the figure). The specific structure will not be described in detail here.

[0085] It is understandable that the flipping of the photovoltaic cell 210 is driven by the coordinated action of drive unit 131 and drive unit 141: drive unit 131 drives the mounting column 110 to rotate around the vertical axis through helical gear meshing, and drive unit 141 drives the mounting plate 120 to flip around the hinge axis 111 (horizontal axis) through gear meshing, thereby driving the photovoltaic module 200 (including photovoltaic cell 210) to achieve adjustment of orientation (horizontal flipping) and tilt angle (vertical flipping).

[0086] The protective component 300 is slidably connected to the photovoltaic frame 220, and its position is adaptively adjusted through symmetrical adjustment components 400 on both sides. The adjustment components 400 are powered by the weight of the counterweight 410, and driven by stainless steel pull ropes 420 and 430 wound around a pulley 440. This drives the outer shell 310 to slide synchronously along the length of the photovoltaic frame 220, ensuring that the protective component 300 is always aligned with the upper position of the photovoltaic panel 210. Specifically, when the photovoltaic panel 210 is flipped, the photovoltaic frame 220 tilts synchronously with the mounting plate 120. At this time, the counterweight 410 slides down due to its own weight (greater than the protective component 300) and generates a downward pulling force. This force is changed by the pull ropes 420 and 430 wound around the pulley 440, causing the outer shell 310 to slide along the T-shaped groove of the photovoltaic frame 220 to the upper position. Because the adjustment components 400 are symmetrically arranged on both sides of the photovoltaic frame 220 and have the same structure, synchronous traction of both ends of the outer shell 310 can be achieved.

[0087] like Figure 10 and Figure 11 As shown, in another embodiment of this application, a water delivery assembly 500 is provided on the mounting plate 120.

[0088] The water supply assembly 500 includes a water tank 510, on which two pumping units 520 are provided, and the pumping units 520 are correspondingly arranged with the slider 340.

[0089] It should be noted that the water tank 510 can be integrally injection molded from PP material, which has the advantages of strong weather resistance, not easy to age, non-toxic and odorless, and can store cleaning water for a long time. It is also lightweight and will not excessively increase the load on the mounting plate 120. The two pumping units 520 and the two sliders 340 are set one-to-one to achieve uniform water delivery to the surface of the photovoltaic panel 210, ensuring uniform cleaning effect. At the same time, it is compatible with the structural design of the double take-up rollers 320 and the double sliders 340, maintaining the coordination of the overall structure of the device.

[0090] The input end of the water pump unit 520 extends into the bottom of the water tank 510, and the output end of the water tank 510 is connected to the corresponding slider 340 through the water supply pipe 530.

[0091] Among them, the pumping unit 520 can be a water pump.

[0092] It should be added that the water pump unit 520 can use a miniature DC submersible pump. This pump is small in size, light in weight, and low in energy consumption, which meets the closed-loop system requirements of the device's own power supply and can be directly powered by the energy storage battery. The miniature DC submersible pump has the advantages of strong self-priming ability, moderate head, and low noise. It can stably pump clean water from the water tank 510, and has excellent waterproof performance, which can adapt to the outdoor humid environment and avoid damage to the pump body caused by rain and dew. At the same time, it has a long service life and is easy to maintain, making it suitable for long-term use of outdoor photovoltaic equipment.

[0093] It should be noted that the water supply pipe 530 is made of high-pressure resistant and corrosion-resistant PU hose, which is soft and flexible, and can adapt to the sliding movement of the slider 340. This prevents the water supply pipe 530 from being pulled or broken when the slider 340 moves. At the same time, the PU hose has good sealing performance, which can prevent water leakage from causing a short circuit in the photovoltaic module 200. The connection between the water supply pipe 530 and the water pump unit 520 and the slider 340 is fixed with a sealing joint to further improve the sealing performance. A water inlet (not shown in the figure) can be opened on the top of the water tank 510, and a sealing plug (not shown in the figure) can be installed on the water inlet. The water tank 510 is located below the photovoltaic frame 220.

[0094] The slider 340 is hollow inside, and multiple water outlets 341 are provided at the bottom of the slider 340.

[0095] It should be added that, such as Figure 11 As shown, the bottom of the slider 340 can be recessed inward in a direction away from the photovoltaic panel 210, so that there is a certain gap between the water outlet 341 and the photovoltaic panel 210, and the water on the photovoltaic panel 210 can flow out more smoothly, avoiding water accumulation on the photovoltaic panel 210.

[0096] Optionally, the outlet 341 can be a circular hole with a diameter of 0.8 mm to 2 mm; or it can be a strip-shaped opening with a width of 0.5 mm to 1.2 mm.

[0097] It should be noted that the hollow design inside the slider 340 forms a water delivery channel, ensuring that cleaning water can flow smoothly from the water pipe 530 into the slider 340, and then be sprayed onto the surface of the photovoltaic cell 210 through the water outlet 341. Multiple water outlets 341 are evenly distributed at the bottom of the slider 340, which can achieve uniform spraying of cleaning water, avoid excessive or insufficient water in some areas, and ensure that every area of ​​the photovoltaic cell 210 surface is fully wetted, laying the foundation for subsequent cleaning. The water outlet 341 can be set as an inclined structure, tilted away from the outer shell 310 to avoid water splashing. At the same time, the orifice size of the water outlet 341 can be adjusted according to the cleaning needs to control the water flow.

[0098] This embodiment utilizes a water pump unit 520 to pressurize and deliver water, combined with a slider 340 to control the water flow. The extension and retraction of the shielding cloth 330 controls the cleaning area. Combined with the tilt angle of the photovoltaic panel 210 and the effect of gravity, the surface of the photovoltaic panel 210 is sprayed, wetted, and rinsed for cleaning. At the same time, relying on the tilt angle of the photovoltaic panel 210 and the gravity of the water flow, the wastewater carrying dust and silt always flows downward along the surface of the photovoltaic panel 210, preventing dirt from flowing back or remaining.

[0099] Specifically, the pumping unit 520 pressurizes the clean water in the water tank 510 and delivers it through the water pipe 530 to the corresponding hollow slider 340 (the slider 340 near the photovoltaic panel 210). Then, multiple water outlets 341 at the bottom of the slider 340 spray the water evenly onto the surface of the photovoltaic panel 210, completing the wetting, loosening, and rinsing of dust and sand. During this process, the extension length of the shielding cloth 330 can be controlled to simultaneously move the slider 340 along the photovoltaic frame 220, thereby changing the spraying position of the water outlets 341 on the photovoltaic panel 210, achieving zoned and segmented cleaning. With the tilted installation angle of the photovoltaic panel 210, the water flows from top to bottom, and the dirt is always discharged downwards with the water flow, leaving no residue and causing no secondary pollution.

[0100] In addition, under the action of the adjustment component 400, the protective component 300 can be positioned at the upper part of the photovoltaic frame 220, and the appropriate slider 340 (the slider 340 close to the photovoltaic panel 210) can be selected according to the orientation of the photovoltaic panel 210 to discharge water, making it more flexible to use; in addition, the photovoltaic panel 210 in a wet state can fit more smoothly and tightly with the shielding cloth 330.

[0101] It should be added that if the photovoltaic cell 210 in the photovoltaic module 200 is lower than the photovoltaic frame 220, then a drain outlet (not shown in the figure) can be opened on the corresponding two sides of the photovoltaic frame 220. This technology is existing technology and will not be described in detail here.

[0102] like Figure 12 As shown, a soft scraper 312 is provided at the bottom of the outer casing 310, and the bottom of the soft scraper 312 slides and adheres to the photovoltaic cell 210.

[0103] It should be added that the soft scraper 312 and the water supply component 500 work together to achieve the cleaning function of the photovoltaic panel 210. After the water supply component 500 sprays cleaning water to wet the dust and stains on the surface of the photovoltaic panel 210, the soft scraper 312 can scrape off the stains as it slides with the outer shell 310, achieving a dual cleaning effect of "spraying water and scraping". The cleaning efficiency is higher and the effect is better. The soft scraper 312 and the bottom of the outer shell 310 are connected by bolts for easy replacement after wear.

[0104] It should be noted that the bottom of the outer casing 310 may be provided with an inner groove, and the side flexible strip 331 is disposed in the inner groove, with a gap between the inner groove and the shielding cloth 330 wound on the take-up roller 320. The inner groove can limit and protect the side flexible strip 331, preventing it from shifting or falling off during the sliding of the outer casing 310 or the winding of the shielding cloth 330; the gap between the inner groove and the shielding cloth 330 on the take-up roller 320 ensures that the shielding cloth 330 is not obstructed by the side flexible strip 331 during winding and stretching, ensuring smooth movement of the shielding cloth 330.

[0105] The length direction of the soft scraper 312 is the same as the axial direction of the take-up roller 320, and the length of the soft scraper 312 is the same as the width of the photovoltaic cell 210. The material of the soft scraper 312 can be silicone or TPU material with a Shore hardness of A30° to A60°.

[0106] Optionally, such as Figure 7 As shown, electromagnetic components 600 are respectively provided on both sides of the photovoltaic frame 220, and the electromagnetic components 600 are correspondingly provided with the slider 340.

[0107] It should be noted that the two electromagnetic components 600 are located on two sides along the length of the photovoltaic frame 220, and the electromagnetic components 600 and the pulley 440 are not on the same plane. See details... Figure 7 .

[0108] The slider 340 is made of a magnetic material, such as magnetic steel.

[0109] Understandably, the mechanical scraping of the soft scraper 312 forms a composite cleaning mode of "spraying and wetting, scraping and removing dirt, and directional sewage discharge". The reciprocating tilt of the photovoltaic panel 210 drives the sliding of the housing 310 adjustment component 400, which in turn drives the soft scraper 312 to reciprocate to scrape the surface of the photovoltaic panel 210. At the same time, the electromagnetic component 600 and the slider 340 are magnetically positioned and matched with the rotation speed of the winding unit 350, so that the shielding cloth 330 always covers the photovoltaic panel 210 throughout the scraping process, which not only prevents sewage from splashing out, but also avoids secondary pollution caused by external dust and debris.

[0110] Specifically, the water supply component 500 first sprays water onto the surface of the photovoltaic panel 210 via the slider 340, wetting and loosening dust, mud, and stubborn stains, reducing adhesion and making them easier to scrape off. The soft scraper 312 closely adheres to the surface of the photovoltaic panel 210, sliding with the outer casing 310 to create a scraping action, directly scraping the moistened stains off the surface of the photovoltaic panel 210. The controller controls the drive component 140 to intermittently change the tilt direction of the photovoltaic panel 210, and the outer casing 310 slides back and forth along the photovoltaic frame 220 under the gravity of the counterweight 410, driving the soft scraper 312 to perform reciprocating scraping. When the electromagnetic component 600 is energized, it generates a magnetic force that attracts the magnetically conductive slider 340, keeping the slider 340 relatively stationary with the photovoltaic frame 220. The rotation speed of the winding unit 350 is precisely matched with the sliding speed of the outer casing 310. The shielding cloth 330 moves synchronously with the outer casing 310 and always completely covers the photovoltaic panel 210, forming a closed cleaning space. At this time, the two sliders 340 are respectively attached to the electromagnetic components 600 on both sides of the photovoltaic panel 210. During this process, the two sliders 340 can be controlled to continuously or alternately release water, thereby creating a water flow between the photovoltaic panel 210 and the shielding cloth 330 (the continuous rotation of the photovoltaic panel 210 and the scraping of the soft scraper 312 keep the water flowing). This water flow can reduce the damage caused to the photovoltaic panel 210 by the soft scraper 312, and at the same time, it can soak and rinse the stains on the photovoltaic panel 210. Combined with the scraping of the soft scraper 312, the cleaning is more thorough, and the pollutants washed off can flow out from the photovoltaic frame 220 under the action of the flowing water.

[0111] To achieve precise matching between the rotational speed of the winding unit 350 and the sliding speed of the outer shell 310, this device adopts position synchronization closed-loop control, the specific implementation method of which is as follows: A displacement sensor or grating sensor is installed on the photovoltaic frame 220 to detect the sliding displacement and sliding speed of the housing 310 along the T-shaped groove in real time. An encoder or angle sensor is installed on the output shaft of the winding unit 350 or the winding roller 320 to detect the rotation angle, linear speed of the winding roller 320 and the release or winding length of the shielding cloth 330 in real time. The controller compares and calculates the sliding speed signal of the housing 310 with the linear speed signal of the take-up roller 320, and adjusts the output speed of the take-up unit 350 in real time according to the preset synchronization coefficient, so that the take-up and unwinding linear speed of the shielding cloth 330 is consistent with the sliding speed of the housing 310. The electromagnetic component 600 magnetically positions the slider 340, ensuring that the shielding cloth 330 remains taut and completely covers the photovoltaic panel 210 during the sliding process of the outer casing 310. This prevents the shielding cloth 330 from becoming loose and accumulating, and also prevents damage from excessive stretching, thus achieving a dynamic and precise match between rotation speed and displacement.

[0112] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A protection device for a photovoltaic solar panel, characterized in that, Includes a base (100), photovoltaic modules (200), and protective components (300); The base (100) is provided with a mounting post (110), and the top of the mounting post (110) is hinged to a mounting plate (120) via a hinge shaft (111). The photovoltaic module (200) is mounted on the mounting plate (120); The photovoltaic module (200) includes a photovoltaic cell (210) and a photovoltaic frame (220), with the photovoltaic cell (210) installed inside the photovoltaic frame (220); The protective assembly (300) includes a housing (310) and a take-up roller (320). The outer casing (310) is disposed on the photovoltaic frame (220), and the winding roller (320) is horizontally disposed inside the outer casing (310), with both ends of the winding roller (320) rotatably connected to the outer casing (310); A winding unit (350) is provided on one side of the housing (310), and the output shaft of the winding unit (350) passes through the housing (310) and is coaxially connected with the winding roller (320); The take-up roller (320) is arranged parallel to the hinge shaft (111), and a shielding cloth (330) is wound on the take-up roller (320). The inner end of the shielding cloth (330) is fixed on the take-up roller (320), and the outer end of the shielding cloth (330) extends out of the outer shell (310) through the cloth outlet (311). The outer end of the shielding cloth (330) is connected to a slider (340), which is slidably mounted on the photovoltaic frame (220).

2. The photovoltaic solar power panel protection apparatus of claim 1, wherein, The base (100) is provided with a drive assembly (130), which drives the mounting column (110) to rotate around the vertical axis; The mounting column (110) is provided with a second driving component (140), which drives the mounting plate (120) to rotate around the horizontal axis.

3. The protective device for photovoltaic solar panels as described in claim 1, characterized in that, The shielding cloth (330) is provided with side soft strips (331) on both sides, and the side soft strips (331) are made of flexible magnetic material; The photovoltaic frame (220) is provided with magnetic strips on both sides, and the magnetic strips are provided in correspondence with the side soft strips (331).

4. The protective device for photovoltaic solar panels as described in claim 1, characterized in that, The outer casing (310) is slidably mounted on the photovoltaic frame (220); The housing (310) is provided with two parallel take-up rollers (320), and there are two take-up units (350) outside the housing, and the two take-up units (350) are arranged corresponding to the take-up rollers (320); The outer casing (310) has two oppositely arranged fabric outlets (311), and the two fabric outlets (311) are correspondingly arranged with the shielding cloths (330) on the two take-up rollers (320).

5. The protective device for photovoltaic solar panels as described in claim 4, characterized in that, An adjustment component (400) is provided on each side of the photovoltaic frame (220). The adjustment assembly (400) includes a counterweight (410), a first pull rope (420), a second pull rope (430), and two pulleys (440). The counterweight (410) is slidably disposed at the bottom of the photovoltaic frame (220), and two pulleys (440) are respectively disposed at the two ends of the corresponding side of the photovoltaic frame (220); The counterweight (410) is slidably disposed at the bottom of the photovoltaic frame (220); The two ends of the first pull rope (420) are connected to the counterweight (410) and the outer shell (310) respectively, and the two ends of the second pull rope (430) are connected to the counterweight (410) and the outer shell (310) respectively. The first pull rope (420) and the second pull rope (430) are respectively wound around the two pulleys (440) on the side away from each other. The mass of the counterweight (410) is greater than the mass of the protective component (300).

6. The protective device for photovoltaic solar panels as described in any one of claims 1 to 5, characterized in that, The mounting plate (120) is provided with a water conveying assembly (500); The water conveying assembly (500) includes a water tank (510), and two pumping units (520) are provided on the water tank (510). The pumping units (520) are correspondingly arranged with the slider (340). The input end of the pump unit (520) extends into the bottom of the water tank (510), and the output end of the water tank (510) is connected to the inside of the corresponding slider (340) through the water supply pipe (530). The slider (340) is hollow inside, and multiple water outlets (341) are provided at the bottom of the slider (340).

7. The protective device for photovoltaic solar panels as described in claim 6, characterized in that, The bottom of the outer casing (310) is provided with a soft scraper (312), and the bottom of the soft scraper (312) slides and adheres to the photovoltaic cell (210).

8. The protective device for photovoltaic solar panels as described in claim 7, characterized in that, The length direction of the soft scraper (312) is the same as the axial direction of the take-up roller (320), and the length of the soft scraper (312) is the same as the width of the photovoltaic cell (210).

9. The protective device for photovoltaic solar panels as described in claim 7, characterized in that, The bottom of the outer shell (310) is provided with an inner groove, and the side soft strip (331) is disposed in the inner groove, and there is a gap between the inner groove and the shielding cloth (330) wound on the take-up roller (320).

10. The protective device for photovoltaic solar panels as described in claim 6, characterized in that, Electromagnetic components (600) are respectively provided on both sides of the photovoltaic frame (220), and the electromagnetic components (600) are correspondingly provided with the slider (340); The slider (340) is made of a magnetic material.

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