Photovoltaic panel cleaning mechanism

Abstract

The utility model provides a photovoltaic panel cleaning mechanism, and belongs to the technical field of photovoltaic cleaning. The photovoltaic panel cleaning mechanism comprises a cleaning mechanism which comprises a spray-washing roller, and the spray-washing roller comprises a hollow rolling shaft, a water spraying hole and a spiral flexible fin; wherein the water spraying holes are formed in the hollow rolling shaft, so that cleaning liquid in the hollow rolling shaft flows out through the water spraying holes; the spiral flexible fins are spirally wound on the outer wall face of the hollow rolling shaft in the axis direction, and the spiral flexible fins deform and are attached to the photovoltaic panel when the spray-washing roller rotates to clean the photovoltaic panel so that at least part of cleaning liquid flowing out of the water spraying holes can be guided to at least one side of the photovoltaic panel in the axis direction of the spray-washing roller. The spiral flexible fins can increase friction force to better remove stains on the surface of the photovoltaic panel, the surface of the photovoltaic panel can be prevented from being scratched, meanwhile, water spraying and the spiral flexible fins are used in cooperation, a better cleaning effect can be achieved with a small amount of water, therefore, water sources are saved, and the photovoltaic panel cleaning device is particularly suitable for the installation environment lacking water.

Description

Technical Field

[0001] This application relates to the field of photovoltaic cleaning technology, and in particular to a photovoltaic panel cleaning mechanism. Background Technology

[0002] The most important component of a solar power system is the solar panel, a device that directly converts solar radiation energy into electrical energy. To maximize the conversion of solar radiation energy, solar panels are typically installed in open areas with long hours of sunshine and ample, unobstructed sunlight. Research has found that western my country, with its abundant sunshine and vast land, is highly suitable for the large-scale construction of solar power plants.

[0003] Solar panels need to be installed directly outdoors, and prolonged use will inevitably lead to the accumulation of sand and dust on their surface. Due to dry weather, limited vegetation cover, and frequent sandstorms, the surface of solar photovoltaic panels is more prone to being covered with a large amount of dust, which seriously affects the efficiency of the solar photovoltaic panels in converting electricity into energy. Existing technologies (such as CN111451237B) generally use water spraying combined with brushing to clean the panels, but the entire process wastes a lot of water, and the brushes can cause significant damage to the photovoltaic panels. Utility Model Content

[0004] One of the technical problems to be solved by this application is to provide a water-saving and clean photovoltaic panel technology so that solar panels (photovoltaic panels) can be used in installation environments, especially those with water shortages, while ensuring their power conversion efficiency.

[0005] To address the aforementioned technical problems, this application provides a photovoltaic panel cleaning mechanism, comprising: a cleaning mechanism including a spray roller, the spray roller comprising: a hollow roller, spray holes, and helical flexible fins; wherein, the spray holes are disposed on the hollow roller to allow cleaning liquid inside the hollow roller to flow out through the spray holes; the helical flexible fins are helically wound around the outer wall of the hollow roller along the axial direction, so as to deform and adhere to the photovoltaic panel when the spray roller rotates to clean the photovoltaic panel, thereby guiding at least a portion of the cleaning liquid flowing out of the spray holes along its axial direction to at least one side of the photovoltaic panel.

[0006] In some embodiments, helical flexible fins are helically wound along the axial direction on the outer wall surface of a hollow roller without water spray holes.

[0007] In some embodiments, the helical flexible fin is a helical flexible silicone fin.

[0008] In some embodiments, the hollow roller includes: a main shaft section, an end shaft section, and a water inlet shaft section; wherein, the two ends of the main shaft section are respectively provided with end shaft sections; the water inlet shaft section is connected to the main shaft section to provide cleaning liquid; a water spray hole is provided on the main shaft section; the outer diameter of the main shaft section is larger than the outer diameter of the end shaft section.

[0009] In some embodiments, the system further includes a drive mechanism for driving the cleaning mechanism to perform linear motion; wherein the spray roller is rotatably mounted on the drive mechanism.

[0010] In some embodiments, the drive mechanism includes: a servo motor, a drive wheel, a driven wheel, a timing belt, a slider, and a guide member; wherein the drive wheel and the driven wheel are arranged opposite each other along the axial direction of the vertical spraying roller; the timing belt is tensioned and connected to the drive wheel and the driven wheel respectively; the servo motor is driven and connected to the drive wheel; the slider is connected to the timing belt; at least one pair of guide members are arranged parallel to each other on both sides of the photovoltaic panel; a slider is slidably mounted on a guide member, and the cleaning mechanism is mounted on the slider.

[0011] In some embodiments, the drive mechanism includes: a servo motor, a lead screw, a lead screw nut, a slider, and a guide member; wherein the lead screw and the lead screw nut are screwed together; the lead screw nut is mounted on the slider; the servo motor is driven by the lead screw; at least one pair of guide members are arranged parallel to each other on both sides of the photovoltaic panel; a slider is slidably mounted on a guide member, and a cleaning mechanism is mounted on the slider.

[0012] In some embodiments, the drive mechanism includes: a servo motor, a gear, a rack, a slider, and a guide; wherein the gear and the rack are meshed; the servo motor is driven by the gear; the guide is arranged parallel to the rack; the slider is slidably mounted on the guide; and a cleaning mechanism is mounted on the slider and the rack.

[0013] In some embodiments, the hollow roller is rotatably mounted on the slider or rack.

[0014] In some embodiments, the cleaning mechanism further includes a jet assembly for jetting air toward the photovoltaic panel.

[0015] In some embodiments, the jet assembly includes: a cavity, a jet nozzle, and an air inlet pipe; wherein the jet nozzle is disposed in the cavity and communicates with the internal space of the cavity; and the air inlet pipe communicates with the internal space of the cavity.

[0016] In some embodiments, the cleaning mechanism further includes: a cover covering the side of the spray roller away from the photovoltaic panel; wherein a spray space is formed between the cover and the spray roller.

[0017] In some embodiments, the photovoltaic panel includes: a battery string, a photovoltaic panel, a photovoltaic backsheet, a first adhesive layer, a second adhesive layer, and a support frame; wherein the photovoltaic panel, the first adhesive layer, the battery string, the second adhesive layer, and the photovoltaic backsheet are stacked sequentially to form a photovoltaic module, and the photovoltaic module is mounted on the support frame.

[0018] Through the above technical solution, the photovoltaic panel cleaning mechanism provided in this application has the following beneficial effects:

[0019] During cleaning operations, the spiral flexible fins of this application not only increase friction to better remove stains from the photovoltaic panel surface, but also prevent scratches on the photovoltaic panel surface, thus avoiding impact on photoelectric conversion efficiency. Furthermore, the high-pressure water jets sprayed from the nozzles and move synchronously with the washing rollers, the high-pressure water jets and spiral flexible fins working together to achieve better cleaning results. The spiral structure of the spiral flexible fins allows the washed-off stains mixed with wastewater to flow along the spiral direction (i.e., the axial direction) to the side of the photovoltaic panel and then to the ground, minimizing the possibility of wastewater flowing down the photovoltaic panel surface to the ground and leaving stains, thereby improving cleaning effectiveness. Simultaneously, the combined use of water spray and spiral flexible fins achieves better cleaning results with less water, thus saving water resources and making it particularly suitable for installation environments with limited water. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of a photovoltaic panel cleaning mechanism disclosed in an embodiment of this application;

[0022] Figure 2 This is a schematic diagram of the spray washing roller structure disclosed in the embodiments of this application;

[0023] Figure 3 This is a partial structural diagram of the spray washing roller disclosed in the embodiments of this application;

[0024] Figure 4 This is a schematic diagram of the jet assembly structure disclosed in an embodiment of this application;

[0025] Figure 5 This is a schematic diagram of the drive mechanism structure disclosed in the embodiments of this application;

[0026] Figure 6 This is a schematic diagram of another structure of the photovoltaic panel cleaning mechanism disclosed in the embodiments of this application.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Cleaning mechanism; 11. Spraying roller; 111. Hollow roller; 1111. Main shaft section; 1112. End shaft section; 1113. Water inlet shaft section; 112. Water spray hole; 113. Spiral flexible fin; 12. Air jet assembly; 121. Cavity; 122. Air jet hole; 123. Air inlet pipe; 13. Cover; 131. Arc plate; 132. End plate; 14. Spraying space; 2. Drive mechanism; 21. Servo motor; 22. Drive wheel; 23. Driven wheel; 24. Synchronous belt; 25. Slider; 26. Guide component; 27. Support column; 28. Mounting plate; 3. Photovoltaic panel; 4. Support frame; 41. Bottom support base; 42. Vertical support beam. Detailed Implementation

[0029] The embodiments of this application will be further described in detail below with reference to the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to illustrate the principles of this application by way of example, but should not be used to limit the scope of this application. This application can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0030] These embodiments are provided to make the application thorough and complete, and to fully express the scope of the application to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, material composition, numerical expressions, and values ​​illustrated in these embodiments should be interpreted as merely exemplary and not as limiting.

[0031] It should be noted that, in the description of this application, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientation or positional relationship, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0032] Furthermore, the terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. "Vertical" is not strictly vertical, but within the permissible margin of error. "Parallel" is not strictly parallel, but within the permissible margin of error. Terms such as "including" or "contains" mean that the element preceding the word encompasses the element listed after it, and do not exclude the possibility of encompassing other elements as well.

[0033] It should also be noted that, in the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application depending on the specific circumstances. When a specific device is described as being located between a first device and a second device, an intermediary device may or may not be present between the specific device and the first or second device.

[0034] All terms used in this application have the same meaning as understood by one of ordinary skill in the art to which this application pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and not as idealized or highly formalized, unless expressly defined herein.

[0035] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0036] like Figures 1 to 6 As shown in the figure, this application embodiment provides a photovoltaic panel cleaning mechanism, including: a cleaning mechanism 1, which includes a spray washing roller 11, the spray washing roller 11 including: a hollow roller 111, a water spray hole 112 and a spiral flexible fin 113; wherein, the water spray hole 112 is provided on the hollow roller 111 so that the cleaning liquid inside the hollow roller 111 can flow out through the water spray hole 112; the spiral flexible fin 113 is spirally wound around the outer wall surface of the hollow roller 111 along the axial direction, so that when the spray washing roller 11 rotates to clean the photovoltaic panel 3, it deforms and adheres to the photovoltaic panel 3 so as to guide at least a portion of the cleaning liquid flowing out of the water spray hole 112 along its axial direction to at least one side of the photovoltaic panel 3.

[0037] In this embodiment, during the cleaning operation, the spiral flexible fins 113 deform to increase their contact area with the photovoltaic panel 3 (i.e., deforming and adhering to the photovoltaic panel 3). This increases friction to better remove dirt from the surface of the photovoltaic panel 3 and prevents scratches on the surface of the photovoltaic panel 3, thus affecting the photoelectric conversion efficiency. Furthermore, high-pressure water jets are sprayed from the spray nozzles 112 and move synchronously with the washing rollers 11. The high-pressure water jets and the spiral flexible fins 113 work together to achieve a better cleaning effect. The spiral flexible fins 113, with their spiral structure, allow the washed dirt and wastewater to flow along the spiral direction (i.e., the axial direction, the left-right direction of the photovoltaic panel 3) to the side of the photovoltaic panel 3 and onto the ground, minimizing the possibility of wastewater flowing down the surface of the photovoltaic panel 3 and leaving stains on the surface, thereby improving the cleaning effect. The synchronous use of the spray nozzles 112 and the spiral flexible fins 113 allows for better cleaning with less water, saving water resources and making it particularly suitable for water-scarce installation environments.

[0038] It is worth noting that this disclosure is also applicable to installation environments with little wind and sand and / or abundant water resources; this application does not limit its own application environment. The positions and spiral directions of different spiral segments of the spiral flexible fin 113 can be the same or different. It allows the washed-off dirt mixed with wastewater to flow along the spiral direction (i.e., the axial direction) to one or both sides of the photovoltaic panel 3 as much as possible. The pitch of different spiral segments of the spiral flexible fin 113 or its radial dimension along the hollow roller 111 can be the same or different, depending on actual needs; this application does not impose any restrictions. The photovoltaic panel 3 here can be a panel already assembled into a module and located on its outer side, or a panel not yet assembled into a module, or other types of panels or support plates suitable for photovoltaics.

[0039] like Figure 2 and Figure 3As shown, in some embodiments, the helical flexible fins 113 are spirally wound along the axial direction on the outer wall surface of the hollow roller 111 without water spray holes 112. The water spray holes 112 are located in the gaps between the helical flexible fins 113, ensuring that the sprayed water is confined within the space formed by the hollow roller 111, the photovoltaic panel 3, and the helical flexible fins 113, and flows as far as possible in the helical direction, rather than flowing directly along the surface of the photovoltaic panel 3. Of course, in other embodiments, the helical flexible fins 113 can also be hollow and have water spray holes 112, and these holes are connected to the interior of the hollow roller 111, thereby enabling the helical flexible fins 113 to also spray water to clean the photovoltaic panel 3. It is worth noting that in this case, the water spray holes 112 on the helical flexible fins 113 are also located as close as possible to one side of the hollow roller 111, so that these water spray holes 112 are located within the space formed by the hollow roller 111, the photovoltaic panel 3, and the helical flexible fins 113, thus ensuring that the sprayed water... The water should flow as much as possible in a spiral direction, rather than flowing directly along the surface of the photovoltaic panel 3. Of course, some of these spray holes 112 can also be set away from the hollow roller 111, so that these spray holes 112 are not located in the space formed by the hollow roller 111, the photovoltaic panel 3 and the spiral flexible fins 113. This can also ensure that the water sprayed out can flow as much as possible in a spiral direction, but a small part will flow directly along the surface of the photovoltaic panel 3. However, since the spray roller 11 will rub against the surface of the photovoltaic panel 3, it is not easy to leave stains, and the cleaning efficiency is good.

[0040] like Figures 1 to 6 As shown, in some embodiments, the helical flexible fin 113 is a helical flexible silicone fin. In this embodiment, silicone material is soft and inexpensive, thereby reducing the cost of using this application. Of course, in other embodiments, the helical flexible fin 113 may also be a helical flexible rubber fin.

[0041] like Figures 1 to 6As shown, in some embodiments, the hollow roller 111 includes: a main shaft section 1111, an end shaft section 1112, and a water inlet shaft section 1113; wherein, the two ends of the main shaft section 1111 are respectively provided with end shaft sections 1112; the water inlet shaft section 1113 communicates with the main shaft section 1111 to provide cleaning liquid; a water spray hole 112 is provided on the main shaft section 1111; the outer diameter of the main shaft section 1111 is larger than the outer diameter of the end shaft section 1112. The larger main shaft section 1111 can hold more water, ensuring that the entire hollow roller 111 can be filled with water to ensure the cleaning effect, while the smaller end shaft section 1112 ensures its mechanical strength, ensuring the structural strength and service life of this application. In practical applications, the end shaft section 1112 can be rotated by either rotatable mounting or driven by a rotary motor. The inlet shaft section 1113 can be installed on the end shaft section 1112. In this case, the end shaft section 1112 with the inlet shaft section 1113 is a hollow structure and communicates with the main shaft section 1111. The end shaft section 1112 without the inlet shaft section 1113 is sealed by a plug, thus closing that end of the main shaft section 1111. Of course, the inlet shaft section 1113 can be installed on two end shaft sections 1112 or on one end shaft section 1112. The inlet shaft section 1113, the end shaft section 1112, and the main shaft section 1111 are preferably coaxially arranged, with the inlet shaft section 1113 rotatably sealed on the end shaft section 1112. Alternatively, the inlet shaft section 1113 can be connected to the water supply component via a rotary joint. In practical applications, the water supply component can be integrated into this application or set separately from this application but connected to the water supply system.

[0042] like Figures 1 to 6 As shown, in some embodiments, the system further includes a drive mechanism 2 for driving the cleaning mechanism 1 to perform linear motion (up and down); wherein the spray roller 11 is rotatably mounted on the drive mechanism 2. In this embodiment, the drive mechanism 2 drives the cleaning mechanism 1 to move in a direction perpendicular to the axis of the hollow roller 111, so that the spray roller 11 sequentially cleans the surface of the photovoltaic panel 3. During the cleaning process, it also rotates, thereby guiding the washed-off dirt mixed with wastewater to at least one side of the photovoltaic panel 3 through the spiral flexible fins 113. Of course, in practical applications, the drive mechanism 2 can realize the linear reciprocating motion of the cleaning mechanism 1, thus allowing for multiple cleaning operations and further improving the cleaning effect.

[0043] 1. For example Figures 1 to 6As shown, in some embodiments, the drive mechanism 2 includes: a servo motor 21, a drive wheel 22, a driven wheel 23, a timing belt 24, a slider 25, and a guide member 26; wherein, the drive wheel 22 and the driven wheel 23 are arranged opposite each other along the axial direction of the vertical spraying roller 11; the timing belt 24 is tensioned and connected to the drive wheel 22 and the driven wheel 23 respectively; the servo motor 21 is driven and connected to the drive wheel 22; the slider 25 is connected to the timing belt 24; at least one pair of guide members 26 are arranged parallel to each other on both sides of the photovoltaic panel 3; a slider 25 is slidably mounted on a guide member 26, and the cleaning mechanism 1 is mounted on the slider 25. Specifically, an end shaft segment 1112 is rotatably mounted on a slider 25. The servo motor 21 can precisely control the moving distance and speed of the cleaning mechanism 1; it works in conjunction with the timing belt 24 to convert the rotational motion of the servo motor into a smooth and controllable translational motion of the cleaning roller system, and can perform precise long-distance movement.

[0044] like Figures 1 to 6 As shown, in some embodiments, unlike the embodiments described above, the drive mechanism 2 includes: a servo motor 21, a lead screw, a lead screw nut, a slider 25, and a guide member 26; wherein, the lead screw and the lead screw nut are screwed together; the lead screw nut is mounted on the slider 25; the servo motor 21 is driven by the lead screw; at least one pair of guide members 26 are arranged parallel to each other on both sides of the photovoltaic panel 3; a slider 25 is slidably mounted on a guide member 26, and the cleaning mechanism 1 is mounted on the slider 25. The lead screw pair operates crisply and smoothly, and is suitable for precise movement over long distances.

[0045] like Figures 1 to 6 As shown, in some embodiments, unlike the embodiments described above, the drive mechanism 2 includes: a servo motor 21, a gear, a rack, a slider 25, and a guide member 26; wherein, the gear and the rack are meshed; the servo motor 21 is driven by the gear; the guide member 26 is arranged parallel to the rack; the slider 25 is slidably mounted on the guide member 26; and the cleaning mechanism 1 is mounted on the slider 25 and the rack.

[0046] like Figures 1 to 6 As shown, in some embodiments, the hollow roller 111 is rotatably mounted on the slider 25 or the rack. In practical applications, the synchronous belt 24, driven by the rotation of the driving pulley 22 and the driven pulley 23, or the lead screw, driven by the rotation of the lead screw, will drive the slider 25, on which the hollow roller 111 is mounted, to move vertically, thereby enabling the cleaning mechanism 1 to perform vertical cleaning operations on the photovoltaic surface 3. The rack, driven by the rotation of the gears, will also reciprocate vertically, but it requires more space.

[0047] like Figures 1 to 6As shown, in some embodiments, the cleaning mechanism 1 further includes a jet assembly 12 for spraying air towards the photovoltaic panel 3. In this embodiment, the jet assembly 12 can be mounted parallel to the front of the spray roller 11. During cleaning, high-pressure air is first used to blow away the floating dust on the surface of the photovoltaic panel 3. After removing the surface dust and grit, the spray roller 11 is used in conjunction with a high-pressure water jet for cleaning. By using gas to remove grit and dust before water and friction cleaning, the cleaning difficulty can be reduced, and the scratching of the photovoltaic panel 3 surface by grit during cleaning with the spray roller 11 can be avoided, thus affecting the photoelectric conversion efficiency. It is worth noting that the air supply assembly can be integrated into this application or separate from this application but connected through an air supply pipe.

[0048] like Figures 1 to 6 As shown, in some embodiments, the jet assembly 12 includes: a cavity 121, a jet nozzle 122, and an air inlet pipe 123; wherein, the jet nozzle 122 is disposed in the cavity 121 and communicates with the internal space of the cavity 121; the air inlet pipe 123 communicates with the internal space of the cavity 121. In this embodiment, high-pressure gas is ejected through the air inlet pipe 123 and then through the jet nozzle 122 to clean the surface of the photovoltaic panel 3. The jet nozzle 122 is preferably a trumpet-shaped structure. Furthermore, multiple jet nozzles 122 are arranged in at least one row along the left-right direction, and the cleaning coverage surface linearly covers the surface of the photovoltaic panel 3 along the left-right direction to ensure its cleaning effect.

[0049] like Figures 1 to 6 As shown, in some embodiments, the cleaning mechanism 1 further includes a cover 13 covering the side of the spray roller 11 away from the photovoltaic panel 3; wherein a spray space 14 is formed between the cover 13 and the spray roller 11. In this embodiment, the cover 13 serves two purposes: first, to prevent high-pressure water jets from splashing everywhere during cleaning operations; and second, to protect the spray roller 11 and provide safety protection.

[0050] like Figures 1 to 6 As shown, in some embodiments, the housing 13 includes an arc-shaped plate 131 and end plates 132 disposed at opposite ends along the axial direction of the arc-shaped plate 131; the housing 13 is mounted on the slider 25 or rack via the end plates 132. Preferably, the jet assembly 12 is mounted on the outer side of the arc-shaped plate 131 and located beside the spray roller 111 (at least one side in the vertical direction). In other embodiments, the arc-shaped plate 131 can be attached to or away from the photovoltaic panel 3. When the arc-shaped plate 131 is attached to the photovoltaic panel 3, the arc-shaped plate 131 can be a silicone plate or a rubber plate, or a flexible pad can be provided at the contact point between the arc-shaped plate 131 and the photovoltaic panel 3.

[0051] like Figures 1 to 6As shown, in some embodiments, the photovoltaic panel 3 includes: a battery string, a photovoltaic panel, a photovoltaic backsheet, a first adhesive layer, a second adhesive layer, and a support frame 4; wherein, the photovoltaic panel, the first adhesive layer, the battery string, the second adhesive layer, and the photovoltaic backsheet are stacked sequentially to form a photovoltaic module, and the photovoltaic module is mounted on the support frame 4. In this embodiment, the photovoltaic panel is a panel facing the sun, so the cleaning mechanism 1 cleans the photovoltaic panel to ensure its cleanliness and thus guarantee battery efficiency; the drive mechanism 2 can be mounted on the support frame 4. Of course, if the photovoltaic panel 3 is a frameless module, the drive mechanism 2 can be mounted on the side of the photovoltaic panel 3.

[0052] like Figures 1 to 6 As shown, in some embodiments, the photovoltaic panel 3 can be mounted parallel, at an angle, or rotatably on the support surface. Further, the support frame 4 includes: a bottom support base 41 and a vertical support beam 42, a support column 27, and a mounting plate 28; wherein the bottom support base 41 is supported on the support surface, one end of the vertical support beam 42 is supported on the bottom support base 41, and the other end of the vertical support beam 42 supports the mounting plate 28; the support column 27 is mounted on the mounting plate 28 to mount the guide member 26; the photovoltaic panel 3 is mounted on the mounting plate 28. When the dimension of the helical flexible fin 113 in the left-right direction is greater than the width dimension of the photovoltaic panel 3, the wastewater discharged from it will flow directly to the outside of the photovoltaic panel 3. When the two ends of the helical flexible fin 113 in the left-right direction are just above the mounting plate 28, the mounting plate 28 preferably has a guide groove to guide the wastewater discharged from the helical flexible fin 113 to the support surface, preventing the wastewater from spreading on the surface of the mounting plate 28 and flowing to the surface of the photovoltaic panel 3 to contaminate the surface, thereby ensuring a cleaning effect. It is worth noting that the mounting plate 28 can be the frame of the photovoltaic panel 3 or mounted on the frame, or it can be a support for mounting the drive mechanism 2 on one side of the frameless photovoltaic panel 3.

[0053] The embodiments of this application have now been described in detail. To avoid obscuring the concept of this application, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0054] While specific embodiments of this application have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of this application. Those skilled in the art should understand that modifications can be made to the above embodiments or equivalent substitutions can be made to some technical features without departing from the scope and spirit of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any manner.

Claims

1. A photovoltaic panel cleaning mechanism, characterized in that, include: The cleaning mechanism (1) includes a spray roller (11), which includes a hollow roller (111), a water spray hole (112) and a spiral flexible fin (113). The water spray hole (112) is provided on the hollow roller (111) so that the cleaning liquid inside the hollow roller (111) can flow out through the water spray hole (112); the spiral flexible fin (113) is spirally wound around the outer wall of the hollow roller (111) along the axial direction, so that when the washing roller (11) rotates to clean the photovoltaic panel (3), it deforms and fits the photovoltaic panel (3) so that at least part of the cleaning liquid flowing out of the water spray hole (112) is guided along its axial direction to at least one side of the photovoltaic panel (3).

2. The photovoltaic panel cleaning mechanism according to claim 1, characterized in that: The helical flexible fins (113) are helically wound along the axial direction on the outer wall surface of the hollow roller (111) where the water spray holes (112) are not provided; and / or, The spiral flexible fin (113) is a spiral flexible silicone fin.

3. The photovoltaic panel cleaning mechanism according to claim 1, characterized in that, The hollow roller (111) includes: Main shaft section (1111), end shaft section (1112), and water inlet shaft section (1113); The main shaft section (1111) has end shaft sections (1112) at both ends; the water inlet shaft section (1113) is connected to the main shaft section (1111) to provide cleaning liquid; the water spray hole (112) is located on the main shaft section (1111); the outer diameter of the main shaft section (1111) is larger than the outer diameter of the end shaft section (1112).

4. The photovoltaic panel cleaning mechanism according to claim 1, characterized in that, Also includes: A drive mechanism (2) for driving the cleaning mechanism (1) to perform linear motion; wherein the spraying roller (11) is rotatably mounted on the drive mechanism (2).

5. The photovoltaic panel cleaning mechanism according to claim 4, characterized in that, The drive mechanism (2) includes: The system comprises a servo motor (21), a drive wheel (22), a driven wheel (23), a timing belt (24), a slider (25), and a guide member (26); wherein the drive wheel (22) and the driven wheel (23) are arranged opposite each other along a direction perpendicular to the axis of the spray washing roller (11); the timing belt (24) is tensioned and connected to the drive wheel (22) and the driven wheel (23) respectively; the servo motor (21) is driven and connected to the drive wheel (22); the slider (25) is connected to the timing belt (24); at least one pair of guide members (26) are arranged parallel to each other on both sides of the photovoltaic panel (3); one slider (25) is slidably mounted on one guide member (26), and the cleaning mechanism (1) is mounted on the slider (25); or, A servo motor (21), a lead screw, a lead screw nut, a slider (25), and a guide (26); wherein the lead screw and the lead screw nut are screwed together; the lead screw nut is mounted on the slider (25); the servo motor (21) is driven by the lead screw; at least one pair of guides (26) are arranged parallel to each other on both sides of the photovoltaic panel (3); one slider (25) is slidably mounted on one guide (26), and the cleaning mechanism (1) is mounted on the slider (25); or, The system comprises a servo motor (21), a gear, a rack, a slider (25), and a guide (26); wherein the gear and the rack are meshed; the servo motor (21) is driven by the gear; the guide (26) is arranged parallel to the rack; the slider (25) is slidably mounted on the guide (26); and the cleaning mechanism (1) is mounted on the slider (25) and the rack.

6. The photovoltaic panel cleaning mechanism according to claim 5, characterized in that: The hollow roller (111) is rotatably mounted on the slider (25) or the rack.

7. The photovoltaic panel cleaning mechanism according to claim 1, characterized in that, The cleaning mechanism (1) also includes: A jet assembly (12) for jetting air toward the photovoltaic panel (3).

8. The photovoltaic panel cleaning mechanism according to claim 7, characterized in that, The jet assembly (12) includes: Cavity (121), jet port (122), and air intake pipe (123); The jet hole (122) is located in the cavity (121) and communicates with the internal space of the cavity (121); the air inlet pipe (123) communicates with the internal space of the cavity (121).

9. The photovoltaic panel cleaning mechanism according to any one of claims 1-8, characterized in that, The cleaning mechanism (1) also includes: A cover (13) is installed on the side of the spray washing roller (11) away from the photovoltaic panel (3); A spraying space (14) is formed between the cover (13) and the spraying roller (11).

10. The photovoltaic panel cleaning mechanism according to claim 9, characterized in that, The photovoltaic panel (3) includes: Battery string, photovoltaic panel, photovoltaic backsheet, first adhesive layer, second adhesive layer and support frame (4); The photovoltaic panel, the first adhesive layer, the battery string, the second adhesive layer, and the photovoltaic backsheet are stacked in sequence to form a photovoltaic module, and the photovoltaic module is installed on the support frame (4).

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