A drone cleaning device and photovoltaic system

Abstract

This utility model discloses a drone cleaning device and a photovoltaic system, relating to the field of photovoltaic equipment technology. The drone cleaning device includes a drone and a spraying device; the spraying device includes a spray bar and multiple nozzles mounted on the spray bar, with the nozzles arranged sequentially along the extension direction of the spray bar, which is connected to the drone; in the drone's forward direction, the spray bar gradually deviates backward from one end to the other in its extension direction. During the cleaning of the photovoltaic module array, in the drone's forward direction, with the end of the spray bar near the upper part of the photovoltaic module array in front and the end near the lower part of the photovoltaic module array behind, each nozzle is controlled to spray and scour different positions of the photovoltaic module array. The upper part of the photovoltaic module array is cleaned first, followed by the lower part. Simultaneously, the wastewater flowing from the upper part of the photovoltaic module array to the lower part can be flushed away, improving the overall cleaning effect of the photovoltaic module array.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic equipment technology, and in particular to a drone cleaning device and photovoltaic system. Background Technology

[0002] In some existing technologies for cleaning photovoltaic modules using drones, a spray system is fixed to the drone frame to clean the photovoltaic module array, with the spray system perpendicular to the drone's direction of travel.

[0003] However, since the top surface of the photovoltaic module array is tilted, after the spray system sprays the photovoltaic module array, the cleaning liquid used to clean the upper part of the photovoltaic module array will flow to the lower part. When the cleaning wastewater from the upper part flows down, it will affect the cleaning of the lower part of the module array, resulting in poor overall cleaning effect.

[0004] Therefore, how to improve the cleaning effect is a technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a drone cleaning device and photovoltaic system that can improve the cleaning effect on photovoltaic module arrays.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A drone cleaning device includes a drone and a spraying device; the spraying device includes a spray bar and a plurality of nozzles disposed on the spray bar, the plurality of nozzles being arranged sequentially along the extension direction of the spray bar, the spray bar being connected to the drone; wherein, in the forward direction of the drone, the spray bar gradually deviates backward from one end to the other in its extension direction.

[0008] Preferably, the device further includes an adjustment device, through which the UAV is connected to the spray bar, and the adjustment device can drive the spray bar to swing to adjust the angle of the spray bar relative to a preset axis, the preset axis being parallel to the forward direction.

[0009] Preferably, the adjustment device includes a base, a first connecting rod, and a second connecting rod. The base is fixed to the UAV. The first connecting rod and the second connecting rod are both hinged between the base and the spray bar. The first connecting rod and the second connecting rod are arranged sequentially along the extension direction of the spray bar, and at least one of the first connecting rod and the second connecting rod is a telescopic rod.

[0010] Preferably, in the forward direction of the drone, the first connecting rod is connected to the spray bar at a forward position, and the second connecting rod is connected to the spray bar at a rearward position; the first connecting rod is a fixed-length rod, and the second connecting rod is a telescopic rod.

[0011] Preferably, the telescopic rod is an electric push rod, which is electrically connected to the battery in the drone.

[0012] Preferably, the base is fixedly connected to the frame below the drone; under the adjustment of the adjustment device, the spray bar has at least one stopping position, in which the spray bar and the nozzle are located in the middle of the frame.

[0013] Preferably, the spray bar is a straight bar, and the spray bar is connected to the lower part of the drone at the middle of its extension direction.

[0014] Preferably, the spraying device further includes a water tank disposed in the drone and a water pump assembly disposed on the base, the water pump assembly being connected between the water tank and the spray bar, and the water pump assembly being electrically connected to the battery in the drone.

[0015] Preferably, the nozzle is a fan-shaped nozzle, and the spray patterns of adjacent nozzles at least partially overlap; in the direction of travel of the UAV, the nozzle faces forward and downward.

[0016] A photovoltaic system includes the aforementioned drone cleaning device and a photovoltaic module array; the photovoltaic module array includes a plurality of photovoltaic modules arranged sequentially along a first direction, the top surface of the photovoltaic module array being inclined relative to the vertical direction; the drone cleaning device is located above the photovoltaic module array and moves along the first direction from one end of the photovoltaic module array to the other end, and in the drone's moving direction, the side of the spray bar closest to the upper part of the top surface of the photovoltaic module array is in front, and the side closest to the lower part of the top surface of the photovoltaic module array is behind.

[0017] The drone cleaning device provided by this utility model includes a drone and a spraying device; the spraying device includes a spray bar and multiple nozzles disposed on the spray bar, the multiple nozzles being arranged sequentially along the extension direction of the spray bar, and the spray bar being connected to the drone; wherein, in the forward direction of the drone, the spray bar gradually deviates backward from one end to the other in its extension direction.

[0018] During the cleaning process of photovoltaic module array, in the forward direction of the drone, the end of the spray boom closer to the top of the photovoltaic module array is in front and the end closer to the bottom of the photovoltaic module array is behind. Each nozzle is controlled to spray and wash different positions of the photovoltaic module array. At this time, the top of the photovoltaic module array is cleaned first and the bottom is cleaned later. At the same time as the bottom is cleaned, the sewage flowing from the top of the photovoltaic module array to the bottom of the photovoltaic module array can be flushed away, which can improve the overall cleaning effect of the photovoltaic module array. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0020] Figure 1 This is a top view of the drone cleaning device provided in the embodiment of this utility model;

[0021] Figure 2 This is a side view of the drone cleaning device provided in the embodiment of this utility model;

[0022] Figure 3 This is a side view of the embodiment provided by this utility model after the electric push rod has retracted;

[0023] Figure 4 This is a top view of another embodiment of the drone cleaning device provided by this utility model.

[0024] Figure label:

[0025] Photovoltaic module array 1;

[0026] Sprinkler device 2, spray bar 21, nozzle 22, water pump assembly 23, suction pipe 24, outlet pipe 25;

[0027] Drone 3, Frame 31;

[0028] Base 4, base support plate 41;

[0029] Adjustment device 5, first connecting rod 51, second connecting rod 52, double-headed universal joint chuck 53, connecting seat 54;

[0030] Direction of travel: X. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] The core of this invention is to provide a drone cleaning device and a photovoltaic system, which can improve the cleaning effect on photovoltaic module arrays.

[0033] For a specific embodiment of the drone cleaning device provided by this utility model, please refer to Embodiment 1. Figures 1 to 3This includes drone 3 and spraying device 2.

[0034] like Figure 2 As shown, the spraying device 2 includes a spray bar 21 and multiple nozzles 22 mounted on the spray bar 21, which are either fixedly connected or the nozzles 22 are connected to the spray bar 21 with adjustable angles. The multiple nozzles 22 are arranged sequentially along the extension direction of the spray bar 21. The spray bar 21 is connected to the drone 3, specifically below the drone 3.

[0035] In the forward direction X of the drone 3, the spray boom 21 gradually deviates backward from one end to the other in its extension direction, such as... Figure 1 and Figure 3 As shown, along the direction from end A to end B on the spray bar 21, each part gradually deviates backward, with end A at the front and end B at the back.

[0036] like Figure 1 and Figure 2 As shown, during the cleaning process of the photovoltaic module array 1, in the forward direction X of the drone 3, with the end of the spray boom 21 closest to the upper part of the photovoltaic module array 1 (end A) in front and the end closest to the lower part of the photovoltaic module array 1 (end B) behind, each nozzle 22 is controlled to spray and rinse different positions of the photovoltaic module array 1. The spray water line is referenced by the dotted line. At this time, the upper part of the photovoltaic module array 1 is cleaned first, and the trajectory of the dirty water flow is referenced by the dotted line. Figure 1 The dotted arrow in the image indicates that the lower end of the photovoltaic module array 1 is being cleaned. At the same time, the cleaning of the lower end can also flush away the wastewater flowing from the upper end of the photovoltaic module array 1 to the lower end, thereby improving the overall cleaning effect of the photovoltaic module array 1.

[0037] In some embodiments, the forward direction X of the drone 3 can be determined, so that the spray bar 21 gradually deviates backward from one end to the other in its extension direction relative to the drone 3; or, a rotating device is provided between the spray bar 21 and the drone 3, so that the front and rear positions of the spray bar 21 in the extension direction can be adaptively adjusted according to the change of the forward direction X of the drone 3.

[0038] To balance the cleaning effect in the height direction, such as Figure 2 and Figure 3 As shown, the drone cleaning device also includes an adjustment device 5. The drone 3 is connected to the spray bar 21 through the adjustment device 5, and the adjustment device 5 can drive the spray bar 21 to swing, so as to adjust the angle of the spray bar 21 relative to a preset axis, which is parallel to the forward direction X of the drone 3.

[0039] like Figure 2As shown, before or during the cleaning process by the drone 3, the adjusting device 5 adjusts the angle of the spray bar 21 so that the spray bar 21 is approximately parallel to the top surface of the photovoltaic module array 1, and the distance between each nozzle 22 on the spray bar 21 and the photovoltaic module array 1 directly below it is approximately the same. Specifically, the distance between all nozzles 22 on the spray bar 21 and the surface of the photovoltaic module to be cleaned is at the same set cleaning height, thereby ensuring that the cleaning fluid covers the photovoltaic module array 1 evenly, improving the uniformity of cleaning, and allowing the spray bar 21 to clean at the optimal angle. This reduces water consumption while improving cleaning effect and efficiency. Specifically, during the cleaning process, the spray nozzles of each nozzle 22 can be located on the same side of the spray bar 21 and the distance between them can be the same.

[0040] In some embodiments, such as Figures 2 to 3 As shown, the adjustment device 5 includes a base 4, a first connecting rod 51, and a second connecting rod 52. The base 4 is fixed to the drone 3, and both the first connecting rod 51 and the second connecting rod 52 are hinged between the base 4 and the spray bar 21. The first connecting rod 51 and the second connecting rod 52 are arranged sequentially along the extension direction of the spray bar 21, and at least one of the first connecting rod 51 and the second connecting rod 52 is a telescopic rod. In this case, the height of the spray bar 21 at different positions can be adjusted by extending and retracting the telescopic rod. Of course, in other embodiments, the adjustment device can use a rotary motor, and the spray bar 21 can be connected to the output end of the rotary motor to achieve swing adjustment.

[0041] In some embodiments, such as Figure 2 As shown, in the forward direction X of the UAV 3, the first link 51 is connected to the spray boom 21 at a forward position, and the second link 52 is connected to the spray boom 21 at a rearward position. The first link 51 is a fixed-length link, and the second link 52 is a telescopic link.

[0042] At this time, in a non-operational state, such as Figure 3 As shown, the second link 52 is adjusted based on the fixed length of the first link 51, for example, making the second link 52 the same length as the first link 51, so that the spray boom 21 is in a horizontal state. Furthermore, after the drone 3 lands, the spray boom 21 can remain in this state; in the operating state, such as... Figure 2 As shown, the length of the second connecting rod 52 can be adjusted individually. Specifically, the second connecting rod 52 is extended so that one end of the spray rod 21 near the second connecting rod 52 moves down and the other end moves up, so that the spray rod 21 is roughly parallel to the top surface of the photovoltaic module array 1, which is convenient for adjustment.

[0043] In some embodiments, the telescopic rod is an electrically operated actuator, which is electrically connected to the battery in the drone 3, allowing for direct adjustment of the telescopic rod's length using the drone 3's battery. Of course, in other embodiments, the telescopic rod can also be a hydraulically operated telescopic rod, or a manually adjustable telescopic rod.

[0044] In some embodiments, such as Figure 4 As shown, one end of the first connecting rod 51 and the second connecting rod 52 are respectively pivotally connected to the base 4 via connecting shafts. Specifically, the connecting shafts can be parallel to the forward direction X of the UAV 3 or perpendicular to the extension direction of the spray boom 21. For example, two connecting seats 54 are fixed to the bottom surface of the base 4, and the top ends of the first connecting rod 51 and the second connecting rod 52 are respectively pivotally connected to the corresponding connecting seats 54 via bolts. The other ends of the first connecting rod 51 and the second connecting rod 52 are respectively rotatably connected to the spray boom 21 via universal joints. For example, the lower ends of the first connecting rod 51 and the second connecting rod 52 are respectively connected to the spray boom 21 via corresponding double-headed universal joint clamps 53.

[0045] In some embodiments, the adjustment device 5 can adjust the angle of the spray boom 21 under the control of the application on the drone; or the angle of the spray boom 21 can be adjusted manually, for example, by manually adjusting the length of the telescopic boom.

[0046] In some embodiments, to avoid the spray boom 21 and nozzle 22 affecting the landing of the drone 3, such as Figure 3 As shown, the base 4 is fixedly connected to the frame 31 below the drone 3. Under the adjustment of the adjustment device 5, the spray bar 21 has at least one resting position. In the resting position, the spray bar 21 and the nozzle 22 are located in the middle of the frame 31. In addition, the spray bar 21 can also be parallel to the bottom surface of the drone 3 or parallel to the landing surface under the drone 3, so as to avoid the spray bar 21 and the nozzle 22 hitting the landing surface under the frame 31 when the frame 31 lands, and will not interfere with the normal landing and stopping of the drone 3, thus ensuring the safety of take-off and landing.

[0047] In some embodiments, such as Figure 1 As shown, the spray bar 21 is a straight bar, with a simple structure and easy processing; in other embodiments, such as Figure 4 As shown, the spray bar 21 can also be a bent bar, or it can also be an arc-shaped bar.

[0048] In some embodiments, such as Figure 1 As shown, the spray boom 21 is connected at its center along its extension direction to the lower part of the drone 3 and the base 4. This ensures that the drone 3 provides a uniform pulling force to the spray boom 21, improving the stability of the drone 3's operation. Furthermore, the spray boom 21's location below the drone 3 prevents the cleaning fluid sprayed from the nozzle 22 from hitting the drone 3, reducing interference with the drone 3's forward movement. In other embodiments, the spray boom 21 may also be connected to the front or top of the drone 3.

[0049] In some embodiments, such as Figure 1 As shown, the center of the spray boom 21 is located below the center of the UAV 3, facilitating accurate assembly of the spray boom 21 at a selected tilt angle relative to the forward direction X. Figure 1As shown, a preset reference plane S perpendicular to the forward direction X of the UAV 3 is selected as the assembly reference. The preset reference plane S passes through the center of the UAV 3, and can be a virtual surface or a solid structural surface on the UAV 3. The selected tilt angle is d. During assembly, the spray bar 21 is assembled with the preset reference plane S at an angle d relative to the preset reference plane S. d is less than 90° and can be between 10° and 45°, such as 15°, 30°, etc.

[0050] In some embodiments, such as Figure 3 As shown, the base 4 is fixed with multiple base support plates 41, which are specifically bolted together. The base support plates 41 are fixedly connected to the frame 31, thereby improving the reliability of the connection between the base 4 and the frame 31 through multiple connections.

[0051] In spray device 2, such as Figure 2 and Figure 3 As shown, the spraying device 2 also includes a water tank located in the drone 3 and a water pump assembly 23 located on the base 4. The water pump assembly 23 is connected between the water tank and the spray bar 21. Specifically, the water pump assembly 23 is connected to the water tank via a suction pipe 24 and to the spray bar 21 via a discharge pipe 25. The water pump assembly 23 is electrically connected to the battery in the drone 3, thereby enabling the battery in the drone 3 to drive the water pump assembly 23, allowing the water pump assembly 23 to obtain cleaning fluid from the water tank and supply it to each nozzle 22 through the inner cavity of the spray bar 21. Furthermore, the base 4 can support the water pump assembly 23, facilitating its assembly and maintenance.

[0052] In some embodiments, the nozzle 22 is a fan-shaped nozzle, which has a good flow stabilization effect.

[0053] In some embodiments, the spray patterns of adjacent nozzles 22 at least partially overlap to ensure adequate spraying.

[0054] In some embodiments, each nozzle 22 is evenly arranged on the spray bar 21 for easy assembly.

[0055] In some embodiments, in the forward direction X, the nozzle 22 faces forward and downward, such as... Figure 1 and Figure 2 As shown, the cleaning fluid provided by the nozzle 22 is sprayed at an angle onto the photovoltaic module array 1, with the cleaning fluid and the top surface of the photovoltaic module array 1 having an angle. For example, the angle between the falling direction of the cleaning fluid on the top surface of the photovoltaic module array 1 and the top surface of the photovoltaic module array 1 is between 60° and 75°, ensuring that the cleaning fluid is sprayed onto the surface of the photovoltaic module array 1 with the best impact force, resulting in a good cleaning effect.

[0056] In some embodiments, the pump assembly 23 is a high-pressure plunger pump assembly with good power performance.

[0057] In some embodiments, the water pump assembly 23 is fixed to the base 4 by bolts, specifically fixed to the top of the base 4.

[0058] In this embodiment, the working principle of the drone cleaning device includes: the drone 3 starts up and runs to one end of the photovoltaic module array 1, for example... Figure 1 On the right side of the example, at this time, the front end of the spray bar 21 ( Figure 1 The middle A end is located directly above the top of photovoltaic module array 1, and the rearmost end is located directly above the bottom of photovoltaic module array 1. Figure 1 (B-end) The flight control system of UAV 3 controls UAV 3 to maintain a 1-meter height distance from photovoltaic module array 1. The battery of UAV 3 powers the second linkage 52, which is an electric push rod. When the electric push rod extends, it causes the spray boom 21 to... Figure 3 The horizontal state in the middle is moved to Figure 2 The installation angle of the drone 3 is parallel to that of the photovoltaic module array 1, ensuring that each nozzle 22 maintains a height difference of 300 to 500 mm from the top surface of the photovoltaic module array 1. Powered by the drone 3's battery, the water pump assembly 23 draws water from the drone 3's water tank, which is then sprayed onto the top surface of the photovoltaic module array 1 through the spray bar 21 and nozzles 22, forming a linear water jet. This provides effective cleaning height and redundant spray width. As the drone 3 flies from one end of the photovoltaic module array 1 to the other, it completes 100% full-area, high-efficiency cleaning. After the cleaning operation is completed, as... Figure 3 As shown, the electric push rod retracts, restoring the spray boom 21 to a horizontal position, ensuring the safe landing of the drone 3.

[0059] By applying the drone cleaning device in this embodiment, it can be ensured that when the drone 3 sprays and cleans the photovoltaic module array 1 along the forward direction X, the dirt that falls from the top of the photovoltaic module array 1 to the bottom can be washed away by the newly sprayed cleaning liquid. This allows the photovoltaic module array 1 to be cleaned at the optimal angle, improving the overall cleaning efficiency and effect. At the same time, since the height of the spray bar 21 at different positions can be adjusted by the adjustment device 5, so that the spray bar 21 is parallel to the top surface of the photovoltaic module array 1, each nozzle 22 cleans at the optimal cleaning height, solving the problems of uneven cleaning coverage after cleaning by the drone 3 and the failure to achieve the best cleaning effect due to the limitation of the spray height.

[0060] In addition to the aforementioned drone cleaning device, this utility model also provides a photovoltaic system, which includes a drone cleaning device. Specifically, the drone cleaning device can be the drone cleaning device provided in any of the above embodiments, and the beneficial effects can be referred to the above embodiments accordingly.

[0061] like Figure 1As shown, the photovoltaic system also includes a photovoltaic module array 1. The photovoltaic module array 1 includes multiple photovoltaic modules arranged sequentially along a first direction, and the top surface of the photovoltaic module array 1 is inclined relative to the vertical direction. The drone cleaning device is located above the photovoltaic module array 1 and travels along the photovoltaic module array 1 from one end to the other in the first direction. In the forward direction X of the drone 3, the spray bar 21 is positioned with the side closer to the upper top surface of the photovoltaic module array 1 (end A) in front and the side closer to the lower top surface of the photovoltaic module array 1 (end B) behind.

[0062] It should be noted that when an element is referred to as "fixing" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as "connecting" another element, it can be directly connected to the other element or there may be an intervening element. Furthermore, in the description of this utility model, unless otherwise stated, "multiple," "multiple roots," and "multiple groups" mean two or more.

[0063] The terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0064] 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 is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0065] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0066] The above provides a detailed description of the drone cleaning device and photovoltaic system provided by this utility model. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A drone cleaning device, characterized in that, Including drones (3) and spraying devices (2); The spraying device (2) includes a spray bar (21) and a plurality of nozzles (22) disposed on the spray bar (21). The plurality of nozzles (22) are arranged sequentially along the extension direction of the spray bar (21). The spray bar (21) is connected to the UAV (3). In the forward direction (X) of the UAV (3), the spray bar (21) gradually deviates backward from one end to the other in its extension direction.

2. The drone cleaning device according to claim 1, characterized in that, It also includes an adjustment device (5), through which the drone (3) is connected to the spray bar (21), and the adjustment device (5) can drive the spray bar (21) to swing to adjust the angle of the spray bar (21) relative to a preset axis, which is parallel to the forward direction (X).

3. The drone cleaning device according to claim 2, characterized in that, The adjustment device (5) includes a base (4), a first connecting rod (51) and a second connecting rod (52). The base (4) is fixed to the UAV (3). The first connecting rod (51) and the second connecting rod (52) are both hinged between the base (4) and the spray bar (21). The first connecting rod (51) and the second connecting rod (52) are arranged sequentially along the extension direction of the spray bar (21), and at least one of the first connecting rod (51) and the second connecting rod (52) is a telescopic rod.

4. The drone cleaning device according to claim 3, characterized in that, In the forward direction (X) of the UAV (3), the first link (51) is connected to the spray bar (21) at a forward position, and the second link (52) is connected to the spray bar (21) at a rearward position; the first link (51) is a fixed length link, and the second link (52) is a telescopic link.

5. The drone cleaning device according to claim 3, characterized in that, The telescopic rod is an electric push rod, which is electrically connected to the battery in the UAV (3).

6. The drone cleaning device according to claim 3, characterized in that, The base (4) is fixedly connected to the frame (31) below the drone (3); under the adjustment of the adjustment device (5), the spray bar (21) includes at least one stopping position, in which the spray bar (21) and the nozzle (22) are located in the middle of the frame (31).

7. The drone cleaning device according to any one of claims 1 to 6, characterized in that, The spray bar (21) is a straight bar, and the spray bar (21) is connected to the lower part of the UAV (3) in the middle of its extension direction.

8. The drone cleaning device according to any one of claims 1 to 6, characterized in that, The spraying device (2) also includes a water tank in the drone (3) and a water pump assembly (23) on the base (4). The water pump assembly (23) is connected between the water tank and the spray bar (21) and is electrically connected to the battery in the drone (3).

9. The drone cleaning device according to any one of claims 1 to 6, characterized in that, The nozzle (22) is a fan-shaped nozzle, and the spray patterns of adjacent nozzles (22) at least partially overlap; in the forward direction (X) of the UAV (3), the nozzle (22) faces forward and downward.

10. A photovoltaic system, characterized in that, The drone cleaning device according to any one of claims 1 to 9 further includes a photovoltaic module array (1). The photovoltaic module array (1) includes multiple photovoltaic modules arranged sequentially along a first direction, and the top surface of the photovoltaic module array (1) is inclined relative to the vertical direction. The drone cleaning device is located above the photovoltaic module array (1) and moves from one end of the photovoltaic module array (1) to the other end along the first direction. In the forward direction (X) of the drone (3), the spray bar (21) is in front of the upper part of the top surface of the photovoltaic module array (1) and behind the lower part of the top surface of the photovoltaic module array (1).

Images