Cleaning device for photovoltaic panel

Abstract

The invention provides a photovoltaic panel cleaning device, and relates to the technical field of photovoltaic panel cleaning. In order to solve the problems that in the prior art, a cleaning device is complex in structure and large in energy consumption, the cleaning device comprises a fixed frame, a walking system and a spraying system, the walking system and the spraying system are connected with the fixed frame, and the walking system is used for being in rolling connection with a photovoltaic panel and walking along the edge of the photovoltaic panel; the fixing frame is used for fixing the walking system and the spraying system. The spraying system is provided with a spraying hole, the included angle between the central axis of the spraying hole and the walking direction of the walking system is a first preset angle, and the spraying system can drive the walking system to walk according to the component force of the reverse acting force generated by spraying in the walking direction. And a motor is not required to drive the cleaning device.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic panel cleaning, and in particular to a photovoltaic panel cleaning device. Background Art

[0002] "Fish-solar complementarity" refers to the integration of fish farming and photovoltaic power generation. PV arrays are installed above fish ponds, while fish and shrimp are farmed in the waters below. This creates a new power generation model: "power generation above, fish farming below." During use, photovoltaic panels accumulate dust and other debris, affecting their light transmission and hindering the photoelectric effect, thereby reducing power generation efficiency. Furthermore, high summer temperatures create dust on the panels, making it difficult to dissipate heat. When temperatures exceed 40°C, not only does the panel's power generation efficiency decline, but its lifespan is also significantly shortened.

[0003] Patent publication number CN116317912A discloses a self-cleaning device for photovoltaic panels, comprising a first slide rail and a second slide rail on opposite side walls of the photovoltaic panel, a cleaning portion being provided between the first slide rail and the second slide rail, the cleaning portion being transmission-connected to a drive portion, the drive portion comprising a motor. The drive portion drives the cleaning portion to slide along the slide rails to clean the photovoltaic panel. Although the cleaning device of this invention is capable of automatic cleaning, the structure of the cleaning device is complex and the weight is relatively large. Installing the cleaning device on the photovoltaic panel may exceed the load-bearing capacity of the photovoltaic panel bracket, and long-term use will lead to problems such as bracket deformation and photovoltaic panel damage.

[0004] Therefore, developing a photovoltaic panel cleaning device has important practical application value for solving the problems in the prior art. Summary of the Invention

[0005] In view of the problems of complex structure and heavy weight of photovoltaic panel cleaning devices in the prior art, the present invention proposes a photovoltaic panel cleaning device, which specifically includes the following contents: A photovoltaic panel cleaning device includes a fixed frame, a traveling system and a spraying system; The walking system and the spraying system are connected to the fixed frame, the walking system is used to be connected to the photovoltaic panel in a rolling manner and to walk along the edge of the photovoltaic panel, and the fixed frame is used to fix the walking system and the spraying system; The spraying system is installed on the fixed frame, and a spraying hole is provided on the spraying system. The angle between the central axis of the spraying hole and the walking direction of the walking system is a first preset angle. The spraying system is used to spray the cleaning liquid onto the photovoltaic panel; the spraying system is also used to drive the walking system to move according to the component of the reverse force generated by the spraying in the walking direction; wherein, the setting of the first preset angle satisfies that the component of the reverse force in the walking direction can drive the walking system to move.

[0006] Furthermore, the walking system includes an adjustment unit and a rolling unit, the adjustment unit is connected to the rolling unit, the rolling unit is arranged on both sides of the photovoltaic panel, and the adjustment unit is used to adjust the rolling unit so that the rolling unit is rollingly connected to the photovoltaic panel.

[0007] Furthermore, the adjustment unit includes a spring, a threaded tube and a knob, the threaded tube is rotatably connected to the fixed frame, and the spring is nested in the threaded tube, wherein the first end of the spring extends out of the threaded tube and is connected to the rolling unit, and the knob is arranged at the top end of the threaded tube, and the knob is used to drive the threaded tube to rotate so that the threaded tube is screwed into the fixed frame.

[0008] Furthermore, the rolling unit includes a rolling wheel, a bearing and a wheel frame, the rolling wheel is connected to the wheel frame through the bearing, and the wheel frame is connected to the first end of the spring.

[0009] Furthermore, the spraying system also includes a spraying pipe and a water pipe. Threaded connectors are provided at both ends of the spraying pipe. A spraying hole is provided on the surface of the spraying pipe. The threaded connector is used to connect the water pipe. The spraying pipe sprays the water input by the water pipe through the spraying hole.

[0010] Furthermore, the walking system also includes a guide roller, which is arranged inside the fixed frame. The guide roller is used to stick to the edge of the photovoltaic panel and roll along the edge of the photovoltaic panel.

[0011] Furthermore, the walking system also includes a trough structure, the rolling unit is arranged inside the trough structure, the bottom of the trough structure is connected to the fixed frame, and two side surfaces of the trough structure are provided with split openings.

[0012] Furthermore, the cleaning device also includes a control system and a water pump. The control system is arranged inside the fixed frame, the water pump is installed in the fish pond and connected to the water pipe, and the control system is connected to the water pump. The control system is used to control the working state of the water pump.

[0013] Furthermore, the control system includes a control box, a circuit board and an operation panel. The circuit board is installed inside the control box. The circuit board is electrically connected to the operation panel and the water pump. The operation panel is used to output control instructions according to external operations, and the circuit board is used to control the working state of the water pump according to the control instructions.

[0014] Furthermore, the fixing frame includes a U-shaped fixing plate, and the U-shaped fixing plate is used to fix the walking system and the spraying system.

[0015] Compared with the prior art, the present invention has the following beneficial effects: Firstly, the cleaning device in the present invention includes a fixed frame, a walking system and a spraying system. The walking system and the spraying system are connected to the fixed frame. The walking system is used to be connected to the photovoltaic panel card in a rolling manner and to walk along the edge of the photovoltaic panel. The fixed frame is used to fix the walking system and the spraying system. A spraying hole is provided on the spraying system. Since the angle between the central axis of the spraying hole and the walking direction of the walking system is a first preset angle, wherein the setting of the first preset angle satisfies the requirement that the component of the reverse force in the walking direction can drive the walking system to walk, so that the reverse force generated by the spraying system when spraying generates a component in the walking direction to drive the walking system to walk. Compared with the cleaning device driven by a motor in the prior art, the cleaning device provided by the present invention has a simple structure and is light in weight. When installed on a photovoltaic panel for use, it will not cause damage to the photovoltaic panel bracket. Secondly, the walking system includes an adjustment unit and a rolling unit. The adjustment unit is connected to the rolling unit. The rolling units are arranged on both sides of the photovoltaic panel. The adjustment unit adjusts the rolling unit to make the rolling unit rollingly connected to the photovoltaic panel. Due to the rolling connection between the rolling unit and the photovoltaic panel, the walking unit can move easily on the surface of the photovoltaic panel, which is conducive to the component force generated by the reverse force generated by the spraying system when spraying in the walking direction to drive the walking system to move; Third, the travel system also includes guide rollers, which are mounted inside the fixed frame and are designed to adhere closely to and roll along the edges of the photovoltaic panels. When the reverse force generated by the spraying system generates a force component in the travel direction, driving the travel system, external environmental factors can interfere with the spraying direction, thereby changing the travel direction. To avoid external interference, guide rollers are added to ensure that the cleaning device moves along the edges of the photovoltaic panels, ensuring a consistent travel direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a schematic structural diagram of a photovoltaic panel cleaning device provided by an embodiment of the present invention; Figure 2 1 is a schematic structural diagram of another photovoltaic panel cleaning device provided by an embodiment of the present invention; Figure 3is a cross-sectional view of a cleaning device provided by an embodiment of the present invention; Figure 4 Schematic diagram of the structure of the walking system provided by an embodiment of the present invention; Figure 5 is a side view of the cleaning device provided by an embodiment of the present invention when in use; Figure 6 is a front view of a cleaning device provided by an embodiment of the present invention; Figure 7 1 is a schematic structural diagram of another photovoltaic panel cleaning device provided by an embodiment of the present invention; Figure 8 This is a diagram of the use status of the cleaning device provided by an embodiment of the present invention.

[0018] (Reference Symbols: 1. Fixed frame; 2. Travel system; 3. Spraying system; 31. Spray hole; 21. Spring; 22. Threaded pipe; 23. Knob; 24. Roller; 25. Bearing; 26. Wheel carrier; 27. Guide roller; 28. Grooved structure; 29. ​​Limiting ring; 281. Splitting port; 32. Spraying pipe; 33. Threaded connector; 4. Control system; 5. Water pump; 6. Water pipe; 10. Photovoltaic panel. DETAILED DESCRIPTION To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention are described clearly and completely below. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0019] The specific embodiments of the present invention are described below.

[0020] The cleaning device in the prior art adopts a structure of a slide rail, a cleaning part and a driving part that is transmission-connected to the cleaning part. The driving part drives the cleaning part to slide along the slide rail for cleaning, which results in a complex structure of the cleaning device and high energy consumption. The cleaning device provided by the present invention includes a fixed frame, a walking system and a spraying system. The walking system and the spraying system are connected to the fixed frame. The walking system is used to be rollingly connected to the photovoltaic panel and to walk along the edge of the photovoltaic panel. The fixed frame is used to fix the walking system and the spraying system. A spraying hole is provided on the spraying system. Since the angle between the central axis of the spraying hole and the walking direction of the walking system is a first preset angle, the reverse force generated by the spraying system when spraying generates a component force in the walking direction to drive the walking system to move, wherein the setting of the first preset angle satisfies that the component force of the reverse force in the walking direction can drive the walking system to move. The cleaning device provided by the present invention has a simple structure and is easy to use.

[0021] Example 1 Figure 1 FIG. 1 is a schematic structural diagram of a photovoltaic panel cleaning device provided by an embodiment of the present invention. Figure 1 As shown, the photovoltaic panel cleaning device includes a fixed frame 1, a traveling system 2, and a spraying system 3. The traveling system 2 and the spraying system 3 are connected to the fixed frame 1. The traveling system 2 is used to roll with the photovoltaic panel and travel along the edge of the photovoltaic panel. The fixed frame 1 is used to fix the traveling system 2 and the spraying system 3. The spraying system 3 is mounted on the fixed frame 1. The spraying system 3 is provided with a spraying hole 31. The central axis of the spraying hole 31 forms an angle with the travel direction x of the traveling system 2 at a first predetermined angle. The spraying system 3 is used to spray the cleaning liquid onto the photovoltaic panel. The spraying system 3 is also used to drive the traveling system 2 to move based on the component of the reverse force generated by the spraying in the travel direction.

[0022] In the embodiment of the present invention, the fixed frame 1 is a structural framework used to support, position, and restrain objects. Its stable structure provides rigid support for the components and equipment it carries. The fixed frame 1 serves as the main framework of the cleaning device, supporting various functional components and providing a mounting base for the travel system 2 and spray system 3. The travel system 2 is the structure responsible for achieving mobility. For example, the travel structure includes a wheel-like component and a structure that supports and positions the wheel-like component. The spray system 3 is an equipment system that sprays liquid onto a target area through a specific device. The spray holes 31 are key structures that form the spray pattern in the spray system. The shape, number, and distribution of the spray holes 31 directly determine the effectiveness of the liquid spray. For example, the angle between the central axis of the spray holes 31 and the travel direction x of the travel system 2 is a first preset angle. The first preset angle is set to ensure that the component of the reaction force in the travel direction can drive the travel system. For example, the first preset angle is less than 90°, so that the reaction force generated by spraying through the spray holes 31 can generate a component in the travel direction x.

[0023] In this embodiment of the present invention, the travel system 2 is rollably connected to both sides of the photovoltaic panel, and the spray system 3 sprays liquid onto the panel through spray holes 31. Because the reverse force generated by the spraying through the spray holes 31 can generate a force component in the travel direction x, this reverse force in the travel direction x can drive the travel system 2 to move along the edge of the photovoltaic panel. Exemplarily, the spray holes 31 include a first spray hole and a second spray hole. The central axis of the first spray hole forms a first predetermined angle with the travel direction x of the travel system, and the central axis of the second spray hole forms a first predetermined angle with the direction opposite to the travel direction x of the travel system. The spray holes are equipped with a switch mechanism. When the travel system moves along the edge of the photovoltaic panel and contacts the photovoltaic panel support, the switch mechanism on the spray holes is triggered, closing the first spray hole and opening the second spray hole. The travel system then moves in the opposite direction of the x direction, thereby achieving reciprocating movement of the cleaning device. Compared to the motor-driven method used in the prior art, this significantly reduces energy consumption.

[0024] The cleaning device of the technical solution of this embodiment includes a fixed frame, a traveling system, and a spraying system. The traveling system and the spraying system are connected to the fixed frame. The traveling system is used to roll with the photovoltaic panel and travel along the edge of the photovoltaic panel. The fixed frame is used to fix the traveling system and the spraying system. The spraying system is provided with a spray hole. Because the angle between the central axis of the spray hole and the travel direction of the traveling system is a first preset angle, the reverse force generated by the spraying system during spraying generates a component force in the travel direction to drive the traveling system. Compared with the cleaning devices driven by motors in the prior art, the cleaning device provided by the present invention is simple in structure and lightweight, and will not cause damage to the photovoltaic panel support.

[0025] Example 2 Based on the above embodiment, the embodiment of the present invention introduces the structure of the walking system 2 in detail. Figure 2 FIG. 1 is a schematic structural diagram of another photovoltaic panel cleaning device provided by an embodiment of the present invention. Figure 2 As shown, the walking system 2 includes an adjusting unit and a rolling unit. The adjusting unit is connected to the rolling unit. The rolling units are arranged on both sides of the photovoltaic panel. The adjusting unit is used to adjust the rolling unit so that the rolling unit is rollingly connected to the photovoltaic panel.

[0026] In an embodiment of the present invention, the adjustment unit is a unit that adjusts the rolling connection between the rolling unit and the photovoltaic panel to tighten or loosen the rolling unit and the photovoltaic panel. The rolling unit is a unit that achieves movement, rotation, and other actions of an object through rolling friction. The rolling units are symmetrically arranged on the upper and lower sides of the photovoltaic panel, and the adjustment unit adjusts the rolling units to tighten the photovoltaic panel. Due to the rolling connection between the rolling unit and the photovoltaic panel, the walking unit can move easily on the surface of the photovoltaic panel, which facilitates the component force generated by the reverse force generated by the spraying system during spraying, in the walking direction, to drive the walking system.

[0027] Figure 3 : is a cross-sectional view of a cleaning device provided by an embodiment of the present invention, as shown in FIG. Figure 2 and Figure 3 As shown, the adjustment unit includes a spring 21, a threaded tube 22 and a knob 23. The threaded tube 22 is rotatably connected to the fixed frame 1, and the spring 21 is nested in the threaded tube 22. The first end of the spring 21 extends out of the threaded tube 22 and is connected to the rolling unit. The knob 23 is set at the top of the threaded tube 22. The knob 23 is used to drive the threaded tube 22 to rotate so that the threaded tube 22 is screwed into the fixed frame 1.

[0028] In this embodiment of the present invention, the threaded tube 22 is hollow and has a threaded outer wall. The knob 23 is threadedly connected to the threaded tube 22. A spring 21 is nested within the threaded tube 22. One end extending from the threaded tube 22 is fixedly connected to the rolling unit, and the other end is connected to the inner wall of the threaded tube 22. When the knob 23 is turned, the threaded tube 22 rotates, causing the threaded tube 22 to move axially, compressing or stretching the spring 21. When the spring 21 is compressed, the rolling unit is locked to the photovoltaic panel. When the spring 21 is stretched, the rolling unit is released from the photovoltaic panel.

[0029] On the basis of the above embodiment, a limiting ring is provided at the bottom end of the threaded tube 22 . Figure 4 Schematic diagram of the structure of the walking system provided by the embodiment of the present invention. Figure 4 As shown, the stop ring 29 is an annular structure used to limit the position of components, form or prevent them from falling off. By being fixed to components such as shafts and pipes, it has the function of positioning, blocking or limiting. For example, the stop ring 29 cooperates with the fixed frame 1 to prevent the threaded pipe from being over-screwed.

[0030] Continue to refer Figure 2 and Figure 3 The rolling unit includes a rolling wheel 24 , a bearing 25 and a wheel frame 26 . The rolling wheel 24 is connected to the wheel frame 26 through the bearing 25 , and the wheel frame 26 is connected to the first end of the spring 21 .

[0031] In this embodiment of the present invention, the rolling wheel 24 is a component that enables movement of components, achieving movement through rolling friction. The wheel surface of the rolling wheel is made of wear-resistant rubber, which increases friction between the wheel surface and the photovoltaic panel surface. The bearing 25 is a fundamental component used to reduce friction and support rotating or moving components. The bearing 25 reduces frictional resistance during mechanical movement through rolling or sliding contact. The wheel carrier 26 is a key component that supports and secures the rolling wheel. It can restrict the direction of movement by fixing the mounting angle and position of the rolling wheel. The rolling wheel 24 is connected to the wheel carrier 26 via the bearing 25. The wheel carrier 26 is connected to the first end of the spring 21. Referring to the above embodiment, when the knob is turned, when the spring 21 is compressed, the wheel carrier 26 drives the rolling wheel 24 to press against the photovoltaic panel, locking the rolling wheels on either side of the panel. When the spring 21 is stretched, the wheel carrier 26 drives the rolling wheel 24 away from the photovoltaic panel, releasing the rolling wheels on either side of the panel.

[0032] Continue to refer Figure 2 and Figure 3 The walking system 2 further includes a trough structure 28 , the rolling unit is arranged inside the trough structure 28 , the bottom of the trough structure 28 is connected to the fixed frame 1 , wherein two side surfaces of the trough structure 28 are provided with split openings 281 .

[0033] In an embodiment of the present invention, the trough structure 28 is a rectangular trough. The bottom of the trough structure 28 is connected to the fixed frame 1. The top of the trough structure 28 is open. The side walls of the trough structure 28 are perpendicular to the bottom. The two side walls of the trough structure 28 provide lateral limits for the rolling wheel to prevent the rolling wheel from deviating from its trajectory during movement. Split openings 281 are provided on the two sides of the trough structure 28 parallel to the rotating shaft of the rolling wheel 24. The split openings 281 are used for water leakage. For example, when the cleaning device sprays water into the trough structure during the cleaning process, long-term accumulation of water may cause bearing corrosion and increase rolling resistance. If dust and impurities are mixed in the accumulated water and adhere to the gap between the rolling wheels, the rolling wheels will wear faster, which is not conducive to the long-term use of the cleaning device. In view of the above problems, by providing split openings 281 on the sides of the trough structure 28, the water in the trough body can be discharged in time to ensure the safe and stable operation of the cleaning device.

[0034] Continue to refer Figure 2 The walking system 2 further includes a guide roller 27, which is arranged inside the fixed frame 1. Figure 5 This is a side view of the cleaning device provided by an embodiment of the present invention when in use. Figure 6 : is a front view of a cleaning device provided by an embodiment of the present invention, as shown in FIG. Figure 5 and Figure 6As shown, the guide rollers 27 are used to adhere to and roll along the edges of the photovoltaic panels 10. The fixed frame 1 includes a U-shaped fixing plate, which is used to fix the travel system 2 and the spraying system 3. The U-shaped fixing plate is U-shaped with a side opening and is made of high-strength aluminum alloy, which has the advantages of being lightweight and corrosion-resistant.

[0035] In an embodiment of the present invention, the guide roller 27 is a rolling component used to guide or limit the direction of movement of an object. The guide roller 27 is arranged inside the U-shaped fixing plate, on the side opposite to the opening of the U-shaped fixing plate. The rolling unit includes two rolling wheels, which are respectively located at the upper and lower ends of one side of the opening of the U-shaped fixing plate. Before the cleaning device cleans the photovoltaic panel, the photovoltaic panel is placed at the opening of the U-shaped fixing plate to ensure that the edge of the photovoltaic panel is in contact with the guide roller 27, thereby ensuring the certainty of the moving direction. At the same time, the photovoltaic panel is located between the two rolling wheels 24, and the threaded tube 22 is driven by turning the knob 23, thereby compressing the spring 21 to ensure that the two rolling wheels 24 are clamped to the photovoltaic panel.

[0036] Example 3 Based on the above embodiment, this embodiment introduces the structure of the spraying system 3 in detail. Figure 7 FIG. 1 is a schematic structural diagram of another photovoltaic panel cleaning device provided by an embodiment of the present invention. Figure 7 As shown, the spraying system 3 also includes a spraying pipe 32 and a water pipe (not shown). Threaded connectors 33 are provided at both ends of the spraying pipe 32. The surface of the spraying pipe 32 is provided with a spraying hole 31. The threaded connector 33 is used to connect to the water pipe. The spraying pipe 32 sprays water input from the water pipe through the spraying hole 31.

[0037] In this embodiment of the present invention, the spray pipe 32 is a tubular device used for directional transport and spraying of liquid. A water pipe is a conduit for transporting water. For example, a plastic hose can be used, and there are no restrictions on the type of water pipe. In the application of fish-solar hybrid power generation, the water pipe can transport water from the fish pond to the spray pipe 32. The threaded connector 33 allows for a detachable connection, connecting the water pipe to the spray pipe, providing a reliable connection and easy assembly and disassembly.

[0038] With reference to the above embodiment, since the angle between the central axis of the spray hole 31 and the travel direction x of the traveling system 2 is a first preset angle, wherein the first preset angle is less than 90°, the reverse force generated by spraying through the spray hole 31 can generate a force component in the travel direction x. When the rolling wheel 24 is clamped to the photovoltaic panel and the guide roller 27 contacts the edge of the photovoltaic panel, the spraying system begins to operate. At this time, the reverse force in the travel direction x can drive the traveling system 2 to travel along the edge of the photovoltaic panel. By setting the angle between the central axis of the spray hole 31 and the travel direction x of the traveling system 2, the cleaning device can be moved clockwise or counterclockwise.

[0039] The spraying surface of the spraying pipe 32 is designed to be a curved surface, with a number of spray holes evenly distributed at the lower part. The curved spraying surface has a wide coverage area and cleans more evenly.

[0040] For example, a plurality of cleaning devices may be arranged at the edge of the photovoltaic panel to clean the photovoltaic panel at the same time. Figure 8 This is a diagram showing the use status of the cleaning device provided by an embodiment of the present invention. Figure 8 As shown, two cleaning devices are used to clean the photovoltaic panels at the same time. The two cleaning devices are located on opposite sides of the photovoltaic panels. The moving directions of the two cleaning devices can be set to be consistent. Compared with using one cleaning device, the cleaning time is shortened and the work efficiency is improved.

[0041] Continue to refer Figure 7 and Figure 8 The cleaning device also includes a control system 4 and a water pump 5. The control system 4 is arranged inside the fixed frame 1, the water pump 5 is installed in the fish pond and connected to the water pipe 6. The control system 4 is connected to the water pump 5, and the control system 4 is used to control the working state of the water pump 5.

[0042] In the embodiment of the present invention, the control system 4 performs data storage, data transmission, logical operation and other data processing, and can make the controlled object operate according to the expected rules by collecting, processing and outputting information. Figure 7 As shown, the control system 4 is arranged inside the fixed frame 1 and is fixedly connected to the fixed frame 1. Two mutually redundant control systems 4 can be arranged. Figure 8 As shown, a water pump 5 is installed in the fish pond and connected to a water pipe 6. A control system 4 is connected to the water pump 5. When the control system 4 outputs a start signal, the water pump 5 starts according to the received start signal and pumps water from the fish pond into the spray pipe 32 through the water pipe 6. The spray pipe 32 sprays the water onto the photovoltaic panel through the spray hole 31.

[0043] Specifically, the control system 4 includes a control box, a circuit board and an operation panel. The circuit board is installed inside the control box and is electrically connected to the operation panel and the water pump. The operation panel is used to output control instructions according to external operations, and the circuit board is used to control the working state of the water pump according to the control instructions.

[0044] In an embodiment of the present invention, the control box is a box structure that integrates electrical components, wiring terminals and other components, and can centrally accommodate complex electrical circuits and control components. A controller is integrated on the circuit board inside the control box to realize the collection, processing and output of information. The operation panel can be set on the outside of the control box to facilitate the use of the operator. Exemplarily, when the operation panel receives a start instruction input by the operator, for example, the instruction can be input through buttons, knobs, touch screens and other operations. The operation panel outputs a first control instruction according to the input start instruction, and the controller in the circuit board controls the start of the water pump according to the first control instruction. When the operation panel receives a stop instruction input by the operator, the operation panel outputs a second control instruction according to the input stop instruction, and the controller in the circuit board controls the stop of the water pump according to the second control instruction.

[0045] The control system also includes a battery. Under normal working conditions, the control system is powered by an external power supply. When the external power supply fails, the battery powers the control system to maintain normal operation of the system and support offline work.

[0046] In an embodiment of the present invention, before the cleaning device cleans the photovoltaic panel, the panel is placed in the opening of the U-shaped fixing plate, ensuring that the edge of the panel contacts the guide roller 27. Simultaneously, the panel is positioned between two rollers 24. By turning the knob 23, the threaded tube 22 is driven, thereby compressing the spring 21 and ensuring that the two rollers 24 are locked to the panel. While the cleaning device is cleaning the photovoltaic panel, the operating panel receives a start command input by the operator. The operating panel outputs a first control command based on the input start command, and the controller on the circuit board controls the water pump 5 to start according to the first control command. The water pump 5 pumps water from the fish pond through the water pipe 6 into the spray pipe 32, which sprays the water onto the photovoltaic panel through the spray hole 31. Because the reverse force generated by the spraying through the spray hole 31 can generate a force component in the travel direction x, the reverse force in the travel direction x can drive the travel system 2 to move along the edge of the photovoltaic panel. Compared to the motor-driven cleaning devices of the prior art, the cleaning device provided by the present invention has a simple structure and is relatively lightweight. The cleaning device provided by the present invention also has high adaptability and allows for quick assembly and disassembly. Furthermore, centralized photovoltaic power plants occupy vast areas, and the cleaning device provided by this embodiment is easily disassembled. After cleaning one group, it can be quickly disassembled and reassembled to the next group, improving work efficiency. The cleaning device provided by this embodiment of the present invention has high practical value.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the technical solutions of the embodiments of the present invention.

Claims

1. A photovoltaic panel cleaning device, characterized in that: Including fixed frame, walking system and spraying system; The walking system and the spraying system are connected to the fixed frame, the walking system is used to be connected to the photovoltaic panel in a rolling manner and to walk along the edge of the photovoltaic panel, and the fixed frame is used to fix the walking system and the spraying system; The spraying system is installed on the fixed frame, and a spraying hole is provided on the spraying system. The angle between the central axis of the spraying hole and the walking direction of the walking system is a first preset angle. The spraying system is used to spray the cleaning liquid onto the photovoltaic panel; the spraying system is also used to drive the walking system to move according to the component of the reverse force generated by the spraying in the walking direction; wherein, the setting of the first preset angle satisfies that the component of the reverse force in the walking direction can drive the walking system to move.

2. The photovoltaic panel cleaning device according to claim 1, characterized in that: The walking system includes an adjustment unit and a rolling unit. The adjustment unit is connected to the rolling unit. The rolling units are arranged on both sides of the photovoltaic panel. The adjustment unit is used to adjust the rolling unit so that the rolling unit is connected to the photovoltaic panel in a rolling manner.

3. The photovoltaic panel cleaning device according to claim 2, characterized in that: The adjusting unit includes a spring, a threaded tube and a knob. The threaded tube is rotatably connected to the fixed frame, and the spring is nested in the threaded tube. The first end of the spring extends out of the threaded tube and is connected to the rolling unit. The knob is arranged at the top end of the threaded tube. The knob is used to drive the threaded tube to rotate so that the threaded tube is screwed into the fixed frame.

4. The photovoltaic panel cleaning device according to claim 3, characterized in that: The rolling unit includes a rolling wheel, a bearing and a wheel frame. The rolling wheel is connected to the wheel frame through the bearing, and the wheel frame is connected to the first end of the spring.

5. The photovoltaic panel cleaning device according to claim 1, characterized in that: The spraying system also includes a spraying pipe and a water pipe. Threaded connectors are provided at both ends of the spraying pipe. A spraying hole is provided on the surface of the spraying pipe. The threaded connector is used to connect the water pipe. The spraying pipe sprays the water input by the water pipe through the spraying hole.

6. The photovoltaic panel cleaning device according to claim 2, characterized in that: The walking system further includes a guide roller, which is arranged inside the fixed frame and is used to cling to the edge of the photovoltaic panel and roll along the edge of the photovoltaic panel.

7. The photovoltaic panel cleaning device according to claim 2, characterized in that: The walking system further comprises a trough structure, the rolling unit is arranged inside the trough structure, the bottom of the trough structure is connected to the fixed frame, wherein two side surfaces of the trough structure are provided with split openings.

8. The photovoltaic panel cleaning device according to claim 4, characterized in that: The cleaning device also includes a control system and a water pump. The control system is arranged inside the fixed frame. The water pump is installed in the fish pond and connected to the water pipe. The control system is connected to the water pump and is used to control the working state of the water pump.

9. The photovoltaic panel cleaning device according to claim 8, characterized in that: The control system includes a control box, a circuit board and an operation panel. The circuit board is installed inside the control box and is electrically connected to the operation panel and the water pump. The operation panel is used to output control instructions according to external operations, and the circuit board is used to control the working state of the water pump according to the control instructions.

10. The photovoltaic panel cleaning device according to claim 1, characterized in that: The fixing frame includes a U-shaped fixing plate, and the U-shaped fixing plate is used to fix the walking system and the spraying system.

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