Photovoltaic panel cleaning device and photovoltaic panel assembly

Abstract

The invention discloses a photovoltaic panel cleaning device and a photovoltaic panel assembly, and relates to the technical field of photovoltaic panel cleaning.The photovoltaic panel cleaning device comprises a moving device capable of moving in the extending direction of the high end side of a photovoltaic panel, a hanging mechanism is arranged on the moving device, and a connecting belt capable of moving in a reciprocating mode is hung on the hanging mechanism; the two ends of the connecting belt are each connected with a sweeping device, and the two sweeping devices are kept balanced based on the gravity of the sweeping devices. The cleaning devices are provided with rotatable cleaning parts, and the cleaning parts rotate to clean the photovoltaic panel and drive the two cleaning devices to move in opposite directions. According to the photovoltaic panel cleaning device, the photovoltaic panel can be cleaned at a small time interval, so that the surface of the photovoltaic panel is kept high in cleanliness, and the photovoltaic panel is always in high power generation efficiency.

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 and a photovoltaic panel assembly. Background Art

[0002] Photovoltaic panels are generators that generate direct current (DC) electricity when exposed to sunlight. However, due to their prolonged exposure to sunlight, their surfaces accumulate dust and impurities. This can severely affect the panels' ability to absorb solar energy, reducing their power generation efficiency. Therefore, cleaning the panels is essential to ensure surface cleanliness and, therefore, their power generation efficiency.

[0003] There are two existing cleaning methods: manual cleaning and semi-automated or automated cleaning using cleaning machines. Manual cleaning with tools and scrubbing is labor-intensive. Existing cleaning machines also consume a significant amount of electricity per cleaning session. Therefore, both manual and machine cleaning methods employ a regular cleaning schedule, cleaning the panels at regular intervals. This ensures that cleaning costs are less than the increased power generation revenue from cleaning the panels. However, during these intervals, dust and impurities gradually accumulate on the panels' surfaces. The longer the interval, the more difficult it is to remove the accumulated dust and impurities. Furthermore, the panels' power generation efficiency gradually decreases, making it impossible to maintain a consistently high level of efficiency. Since photovoltaic panels have a finite lifespan, to fully utilize their power generation capabilities throughout their lifespan, it is necessary to ensure that the panels maintain a consistently high power generation efficiency and avoid intervals of low efficiency.

[0004] For example, patents with authorization publication number CN 222423614 U, entitled "A Solar Photovoltaic Panel Cleaning Device," and CN 222519238 U, entitled "Photovoltaic Panel Cleaning Robot and Photovoltaic Power Generation Device," both require high energy consumption and efficiency when cleaning photovoltaic panels. Firstly, they require a high-power generator to operate, and secondly, cleaning photovoltaic panels consumes a significant amount of energy. Consequently, regular cleaning is often employed.

[0005] Therefore, those skilled in the art are in urgent need of producing a photovoltaic panel cleaning device that can clean the photovoltaic panel at smaller intervals, thereby allowing the photovoltaic panel to always maintain a high power generation efficiency. Summary of the Invention

[0006] The present invention aims to provide a photovoltaic panel cleaning device and a photovoltaic panel assembly that consume less power and have a lower power consumption efficiency when cleaning photovoltaic panels. The photovoltaic panels can be cleaned at shorter intervals, thereby maintaining a high degree of cleanliness on the panel surface and maintaining a high power generation efficiency.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A photovoltaic panel cleaning device comprises a movable device that can move along the extension direction of the high end side of the photovoltaic panel, the movable device is provided with a suspension mechanism, a reciprocating connecting belt is suspended on the suspension mechanism, a cleaning device is connected to each of the two ends of the connecting belt, and the two cleaning devices maintain balance based on their own gravity; the cleaning device is provided with a rotatable cleaning part, and the cleaning part rotates to clean the photovoltaic panel and drives the two cleaning devices to move in opposite directions.

[0009] Optionally, the cleaning device includes a first body, and the first body is provided with a first motor;

[0010] The cleaning part includes a roller brush rotatably arranged at the bottom of the first body, and the roller brush is connected to the first motor. When the roller brush rotates, it drives the cleaning device to move and clean the photovoltaic panel; or, the cleaning part includes a disc brush rotatably arranged at the bottom of the first body, and the disc brush is connected to the first motor. When the disc brush rotates, it drives the cleaning device to move and clean the photovoltaic panel.

[0011] Optionally, at least one of the cleaning devices is also provided with a first winding roller and a first winding motor, the end of the connecting belt is connected to the first winding roller, the first winding roller is transmission-connected to the first winding motor, and the high-end side of the photovoltaic panel is also provided with a docking cabin for the mobile device and the cleaning device to dock.

[0012] Optionally, the number of the roller brushes is set to two.

[0013] Optionally, the driving mechanism of the cleaning device is a first motor, the driving mechanism of the moving device is a second motor, and the power supply devices of the first motor and the second motor are both photovoltaic panels.

[0014] Optionally, the moving device includes a second body, which is provided with a walking wheel that moves along the high-end side of the photovoltaic panel, and the suspension mechanism includes a rotating wheel rotatably arranged on the second body, and the rotating wheel and the rotating shaft of the walking wheel are connected through a first transmission mechanism, and the first transmission mechanism includes at least two transmission modes: unidirectional transmission and reverse transmission; the connecting belt is wrapped around the rotating wheel and moves synchronously with the rotating wheel; when the two cleaning devices move in opposite directions, the connecting belt drives the rotating wheel to rotate, and drives the walking wheel to move under the transmission of the first transmission mechanism.

[0015] Optionally, a first power generation photovoltaic panel is provided on the first body, the first motor is connected to the first power generation photovoltaic panel, and also includes a first cleaning mechanism arranged on the left edge and the right edge of the photovoltaic panel. When the cleaning device passes through the first cleaning mechanism, the first power generation photovoltaic panel contacts the first cleaning mechanism to clean the first power generation photovoltaic panel.

[0016] Optionally, a first hollow portion is provided at the bottom of the first body, the roller brush or the disc brush is located in the first hollow portion, the height difference between the lowest side of the roller brush or the disc brush and the lowest side of the first body is less than or equal to a first preset distance, and the external shape of the first body is streamlined for windproofing.

[0017] Optionally, the mobile device includes a second body, on which are rotatably provided running wheels for rolling on the first, second and third surfaces of the high-end side of the photovoltaic panel, and a second power-generating photovoltaic panel and a second motor are provided on the second body, the second power-generating photovoltaic panel is connected to the second motor, and the second motor is transmission-connected to at least one of the running wheels.

[0018] Optionally, a second cleaning mechanism is further provided on the high end side of the photovoltaic panel. When the mobile device passes through the second cleaning mechanism, the second power generation photovoltaic panel contacts the second cleaning mechanism to clean the second power generation photovoltaic panel.

[0019] Optionally, an auxiliary walking portion is further provided at the bottom of the first body.

[0020] The present invention further provides a photovoltaic panel assembly, comprising a photovoltaic panel arranged obliquely, wherein a photovoltaic panel cleaning device is provided on the photovoltaic panel, and the photovoltaic panel cleaning device comprises:

[0021] A mobile device, the mobile device comprising a second body, the second body being rotatably provided with running wheels for rolling on the first surface, the second surface, and the third surface of the high-end side of the photovoltaic panel, the second body being provided with a second power generation photovoltaic panel and a second motor, the second power generation photovoltaic panel being connected to the second motor, and the second motor being transmission-connected to at least one of the running wheels;

[0022] a suspension mechanism, the suspension mechanism comprising a rotating wheel provided on the second body and a connecting belt wound around the rotating wheel;

[0023] At least two cleaning devices, the two cleaning devices are respectively connected to the two ends of the connecting belt, the cleaning device includes a first body, a first motor and a first power generation photovoltaic panel are provided on the first body, the first motor is connected to the first power generation photovoltaic panel, and a roller brush or a disc brush is provided at the bottom of the first body, the roller brush or the disc brush is transmission-connected to the first motor, and when the roller brush or the disc brush rotates, it drives the cleaning device to move;

[0024] A cleaning mechanism, the cleaning mechanism includes a first cleaning mechanism arranged at the left edge and the right edge of the photovoltaic panel, and a second cleaning mechanism arranged at the high end side of the photovoltaic panel, when the cleaning device passes through the first cleaning mechanism, the first power generation photovoltaic panel contacts the first cleaning mechanism to clean the first power generation photovoltaic panel, when the moving device passes through the second cleaning mechanism, the second power generation photovoltaic panel contacts the second cleaning mechanism to clean the second power generation photovoltaic panel.

[0025] In the technical solution of the present invention, a suspension mechanism and a connecting belt are provided, with a cleaning device connected to each end of the connecting belt, so that the downward components of the gravity of the two cleaning devices on the photovoltaic panel cancel each other out. During the cleaning process of the photovoltaic panel, it is only necessary to provide the moving power of the moving device and the rotational power of the cleaning part to overcome the cleaning resistance and the moving resistance. The required electrical energy is relatively small, far less than the increased power generation of the photovoltaic panel due to cleaning. In addition, its power consumption efficiency is low, and the required electrical energy can be replenished in a timely manner. Therefore, the photovoltaic panel can be cleaned at relatively short time intervals, thereby maintaining a high cleanliness of the photovoltaic panel surface and ensuring that the photovoltaic panel always maintains a high power generation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of a first photovoltaic panel cleaning device being installed on a photovoltaic panel;

[0027] Figure 2 for Figure 1 Schematic diagram of the moving device and suspension mechanism;

[0028] Figure 3 for Figure 1 Partial schematic diagram of the moving device and suspension mechanism;

[0029] Figure 4 A schematic diagram of the appearance of a cleaning device;

[0030] Figure 5 A schematic diagram of a cleaning device having a cleaning portion that is a roller brush;

[0031] Figure 6 is a cross-sectional schematic diagram of a cleaning device having a disc brush as a cleaning portion;

[0032] Figure 7 A schematic diagram of a second photovoltaic panel cleaning device being installed on a photovoltaic panel;

[0033] Figure 8 for Figure 7 Schematic diagram of the moving device and suspension mechanism;

[0034] Figure 9 for Figure 7 A schematic cross-sectional view of the mobile device;

[0035] Figure 10 for Figure 7 Schematic diagram of the appearance of the cleaning device;

[0036] Figure 11 A bottom view of a cleaning device having a roller brush as a cleaning portion;

[0037] Figure 12 for Figure 11 A schematic cross-sectional view of the cleaning device;

[0038] Figure 13 is a cross-sectional schematic diagram of a cleaning device having a disc brush as a cleaning portion;

[0039] Figure 14 A schematic diagram of a third photovoltaic panel cleaning device being installed on a photovoltaic panel;

[0040] Figure 15 for Figure 14 Schematic diagram of the moving device, suspension mechanism and cleaning device;

[0041] Figure 16 for Figure 14 Schematic diagram of the moving device, suspension mechanism and cleaning device docked in the docking cabin after the middle connecting belt is retracted;

[0042] Figure 17 for Figure 14 Schematic diagram of the moving device, suspension mechanism and cleaning device cleaning the photovoltaic panels.

[0043] In the figure, 1, photovoltaic panel; 2, moving device; 3, hanging mechanism; 4, cleaning device; 5, cleaning mechanism; 6, docking cabin; 11, fixing device; 12, high-end side; 13, low-end side; 21, second motor; 22, second body; 23, running wheel; 24, second photovoltaic panel; 31, connecting belt; 32, rotating wheel; 33, first shaft; 42, first body; 43, first motor; 44, first photovoltaic panel; 45, second Shaft; 46, auxiliary walking part; 47, first winding motor; 48, first winding roller; 51, first cleaning mechanism; 52, second cleaning mechanism; 111, support leg; 112, fixed frame; 121, first surface; 122, second surface; 123, third surface; 411, roller brush; 412, disc brush; 421, first hollow part; 511, first fixed rod; 512, first roller brush; 521, second fixed rod; 522, second roller brush. DETAILED DESCRIPTION

[0044] See below Figure 1-17 The present invention is described. Figure 1 、 Figure 7 and Figure 14When laying out a photovoltaic panel 1, the panel 1 is laid on a fixture 11. The fixture 11 may include legs 111, to which a fixing frame 112 is connected. The photovoltaic panel 1 is placed on the fixing frame 112 in a longitudinally inclined position. The higher side of the photovoltaic panel 1 is referred to as the high-end side 12, and the lower side is referred to as the low-end side 13. Both the high-end side 12 and the low-end side 13 extend laterally. The photovoltaic panel cleaning device provided by the present invention includes a movable device 2, which is disposed on the high-end side 12 of the photovoltaic panel 1 and is movable in the lateral direction of the photovoltaic panel 1, that is, in the direction in which the high-end side 12 extends. The movable device 2 is provided with a suspension mechanism 3, on which a connecting belt 31 is suspended. The connecting belt 31 is reciprocatable, and a cleaning device 4 is connected at each end of the connecting belt 31. Two cleaning devices 4 are located on the photovoltaic panel 1. Since the connecting belt 31 is reciprocatable, the two cleaning devices 4 can be connected by the connecting belt 31 so as to maintain balance due to their own gravity. That is, under the pulling action of the connecting belt 31, as well as the gravity of the cleaning device 4 itself, the support force of the photovoltaic panel 1, and the friction force, the two cleaning devices 4 can be stationary on the inclined photovoltaic panel 1. The cleaning device 4 itself can move, and a rotatable cleaning part is provided on the cleaning device 4. When the cleaning part rotates, it drives the cleaning device 4 to move and clean the photovoltaic panel 1. The two cleaning devices 4 move in opposite directions. The opposite movement directions here refer to the fact that the longitudinal component speed of one cleaning device 4 relative to the other cleaning device 4 in the plane of the photovoltaic panel 1 is opposite in direction, and the lateral component speeds of the two cleaning devices 4 are the same. That is, relative to the moving device 2, one cleaning device 4 moves upward along the tilt direction of the photovoltaic panel 1, and the other cleaning device 4 moves downward along the tilt direction of the photovoltaic panel 1, so that during the movement of the two cleaning devices 4, the components of their gravity along the plane of the photovoltaic panel 1 always cancel each other out. In this way, during the cleaning process, there is no need to overcome the gravity component of the two cleaning devices 4 to do work, and only a small force needs to be provided to move the cleaning device 4. During the movement of the cleaning device 4, the cleaning part rotates to clean the photovoltaic panel 1, while driving the cleaning device 4 to move.

[0045] The specific working process is as follows: the mobile device 2 moves back and forth along the extension direction of the high-end side 12, from one end to the other, and then turns back, and so on. At the same time, the two cleaning devices 4 move up and down, and when one cleaning device 4 moves to the upper limit position of the high-end side 12, the other cleaning device 4 just moves to the lower limit position of the low-end side 13, and then the cleaning device 4 located on the high-end side moves downward, and the cleaning device 4 located on the low-end side moves upward, and so on. The positions of the mobile device 2 and the cleaning device 4 can be detected and their movement directions can be controlled by setting a position detection device and a controller. When it is detected that the mobile device 2 moves to the left limit position or the right limit position of the photovoltaic panel 1, the mobile device 2 is controlled to move in the opposite direction. When it is detected that the cleaning device 4 moves to the upper limit position or the lower limit position of the photovoltaic panel 1, the cleaning device 4 is controlled to move in the opposite direction. Of course, other existing technologies can also be used to control the movement direction of the mobile device 2 and the cleaning device 4.

[0046] This means that during the photovoltaic panel cleaning process, the photovoltaic panel cleaning device only needs to provide the moving power of the mobile device 2 and the rotational power of the cleaning component of the cleaning device 4 to overcome the movement resistance and cleaning resistance. Due to the small size and light weight of the cleaning device 4 and the mobile device 2, the frictional resistance that the mobile device 2 needs to overcome during movement is small, and the required moving power of the mobile device 2 is also small. In addition, as mentioned above, the gravitational force component of the cleaning device 4 is offset, and the rotational power required by the rotating component of the cleaning device 4 is also small. Therefore, the total driving force required by the photovoltaic panel cleaning device is also small, the electrical energy consumed is low, and the power consumption efficiency is low. This has the following advantages: first, the photovoltaic panel cleaning device has a low power consumption efficiency, and the energy consumed can be replenished in a timely manner. Second, the photovoltaic panel cleaning device consumes a small amount of electrical energy, which is far less than the increased power generated by the photovoltaic panel 1 due to cleaning. Therefore, the photovoltaic panel cleaning device can be powered by a lower-power power source such as an additional photovoltaic panel or other power source. When using a power-generating photovoltaic panel, the power generation efficiency of the power-generating photovoltaic panel is greater than or equal to the power consumption efficiency of the photovoltaic panel cleaning device, so that the electricity generated by the power-generating photovoltaic panel can promptly meet the power consumption requirements of the photovoltaic panel cleaning device. During sunny daytime, the photovoltaic panel cleaning device can continuously clean the photovoltaic panel. In this way, the photovoltaic panel cleaning device can clean the photovoltaic panel at relatively small time intervals (cleaning during the day and stopping cleaning at night), thereby maintaining a high cleanliness of the surface of the photovoltaic panel 1, so that the photovoltaic panel 1 always maintains a high power generation efficiency. Moreover, due to the high cleaning frequency, the binding force of dust and impurities to the photovoltaic panel 1 is also lower, making it easier to clean.

[0047] The moving device 2 may be a ball screw structure, a rack and pinion structure, or a linear module. In this case, the suspension mechanism may be provided on a moving block of the moving device. The moving device 2 may also be provided with a running mechanism, such as running wheels, to drive the entire moving device 2 to move along the high-end side 12 of the photovoltaic panel 1.

[0048] The suspension mechanism 3 may include a rotating wheel 32 mounted on the mobile device 2. The rotating wheel 32 may be fixed to the mobile device 2, with the connecting belt 31 wound around the rotating wheel 32. The contact surfaces between the connecting belt 31 and the rotating wheel 32 are relatively smooth, resulting in minimal friction during relative motion. Preferably, the rotating wheel 32 is rotatably mounted on the mobile device 2.

[0049] Optionally, the cleaning part of the cleaning device 4 can be a roller brush 411 and a disc brush 412.

[0050] The first type is: when the cleaning part is a roller brush 411, see Figure 4 and Figure 5 as well as Figure 10 、 Figure 11 and Figure 12 The cleaning device 4 includes a first body 42, on which a first motor 43 is provided. The cleaning portion includes a roller brush 411 rotatably disposed at the bottom of the first body 42. The roller brush 411 is in transmission connection with the first motor 43. When the roller brush 411 rotates, it drives the cleaning device to move and clean the photovoltaic panel 1. There may be one or more roller brushes 411, and at least one roller brush 411 is in transmission connection with the first motor 43. In this way, the roller brush 411 not only performs the cleaning function but also acts like a running wheel to drive the cleaning device 4 to move. The roller brush 411 can be similar to the roller brush on a sweeping robot.

[0051] The second type is: when the cleaning part is a disc brush 412, see Figure 4 and Figure 6 as well as Figure 10 and Figure 13The cleaning unit includes a disc brush 412 rotatably mounted at the bottom of the first body 42. The disc brush 412 is in transmission connection with the first motor 43. Rotation of the disc brush 412 drives the cleaning device 4. When the disc brush 412 is installed, its axis can be tilted at a predetermined angle relative to the first body 42 in a predetermined direction. As the disc brush 412 rotates, its outer edge contacts the photovoltaic panel 1, generating friction. Because the disc brush 412 is tilted at this angle, it cannot remain stationary. The friction is converted into a force that propels the cleaning device 4 in a linear motion. By varying the forward and reverse rotation of the first motor 43, the cleaning device 4 can be moved up and down. Alternatively, multiple disc brushes 412 can be mounted at the bottom of the first body 42, and their combined motion can be used to achieve linear motion. In this manner, the disc brush 412 not only cleans but also acts like a wheel to propel the cleaning device 4.

[0052] Alternatively, see Figure 14-17 At least one cleaning device 4 is provided with a first winding roller 48 and a first winding motor 47, the end of the connecting belt 31 is connected to the first winding roller 48, and the first winding roller 48 is transmission-connected to the first winding motor 47. The high-end side 12 of the photovoltaic panel 1 is also provided with a docking cabin 6 for the mobile device 2 and the cleaning device 4 to dock.

[0053] The two cleaning devices 4 can both be provided with a first winding roller 48 and a first winding motor 47. The first winding motor 47 can be connected to the first photovoltaic panel 44. The two ends of the connecting belt 31 are respectively connected to the first winding roller 48. Thus, when cleaning is not needed, the connecting belt 31 is recovered by controlling the first winding motor 47 to drive the first winding roller 48 to rotate, so that the connecting belt 31 is wound on the first winding roller 48. Then, see Figure 16 , the moving device 2 drives the two cleaning devices 4 to move to the docking cabin 6 for docking. When cleaning is required, refer to Figure 17 After the moving device 2 drives the two cleaning devices 4 out of the docking cabin 6, the first winding motor 47 is controlled to drive the first winding roller 48 to rotate to release the connecting belt 31. After the release is completed, the first winding motor 47 no longer works, the first winding roller 48 no longer rotates, and the rotating part of the cleaning device 4 rotates to drive the cleaning device 4 to move.

[0054] Alternatively, see Figure 15 The cleaning device 4 preferably has two roller brushes 411, and two first motors 43 can also be provided. The two first motors 43 are respectively connected to the two roller brushes 411. At this time, the first body 42 refers to a structure for fixing the first motor 43 and installing the roller brush 411.

[0055] Optionally, the cleaning device 4 and the moving device 2 can be driven by independent drive mechanisms. The driving mechanism of the cleaning device 4 can be a first motor 43, and the driving mechanism of the moving device 2 can be a second motor 21. The power supply devices of the first motor 43 and the second motor 21 are both photovoltaic panels. A cleaning mechanism 5 for cleaning the photovoltaic panels is also included.

[0056] The first motor 43 can be connected to a photovoltaic panel, which directly powers the first motor 43. The second motor 21 can also be connected to a photovoltaic panel, which directly powers the second motor 21. Of course, the cleaning device 4 and the mobile device 2 can also be equipped with batteries. Excess electricity generated by the photovoltaic panel can be stored in the batteries, allowing the photovoltaic panel cleaning device to be used at night to clean the photovoltaic panel 1. The first motor 43 and the second motor 21 can share a photovoltaic panel, or each can use a separate panel. If the panels are the same photovoltaic panel, the panel can be mounted on the mobile device 2. The first motor 43 can be connected to the panel via a long wire, and the second motor 21 can be connected to the panel via a short wire. Because the photovoltaic panel cleaning device has a low power consumption efficiency, a smaller photovoltaic panel can meet its power needs. The photovoltaic panel cleaning mechanism can clean the panel, maintaining its cleanliness and thereby ensuring its power generation efficiency.

[0057] Optionally, the mobile device 2 may not have an independent driving mechanism, and the movement of the mobile device 2 is driven by the movement of the cleaning device 4. The specific structure is as follows:

[0058] The mobile device 2 includes a second body 22, and the second body 22 is provided with a walking wheel 23 that moves along the high-end side 12 of the photovoltaic panel 1. The suspension mechanism 3 includes a rotating wheel 32 rotatably provided on the second body 22. The rotating wheel 32 and the rotating shaft of the walking wheel 23 are connected by a first transmission mechanism. The first transmission mechanism includes at least two transmission modes: unidirectional transmission and reverse transmission. The first transmission mechanism can also include an intermittent mode, that is, when one moves, the first transmission mechanism does not transmit, and the other does not move. In this way, when the cleaning device 4 moves up and down for cleaning, the mobile device 2 remains stationary for a certain period of time, so that the cleaning device 4 can clean the photovoltaic panel 1 vertically up and down instead of obliquely. Then, the intermittent period ends, the mobile device 2 moves an appropriate distance and enters the intermittent mode again, and the cleaning device 4 cleans vertically up and down again, and so on. The first transmission mechanism can adopt the transmission mechanism of the existing technology, which will not be elaborated here. The connecting belt 31 is wound around the rotating wheel 32 to drive the rotating wheel 32 to move synchronously; when the two cleaning devices 4 move in opposite directions, the connecting belt 31 drives the rotating wheel 32 to rotate, and drives the walking wheel 23 to move under the transmission of the first transmission mechanism.

[0059] The specific sports are as follows: Figure 1 When the cleaning device 4 on the right side moves downward and the cleaning device 4 on the left side moves upward, the connecting belt 31 moves clockwise, thereby driving the rotating wheel 32 to rotate clockwise. At this time, the first transmission mechanism is in the same direction, the running wheel 23 also rotates clockwise, and the mobile device 2 moves to the right. When the cleaning device 4 on the right side moves upward and the cleaning device 4 on the left side moves downward, the connecting belt 31 drives the rotating wheel 32 to rotate counterclockwise, the first transmission mechanism becomes in the reverse direction, the running wheel 23 also rotates clockwise, and the mobile device 2 continues to move to the right, thus completing the movement of the mobile device 2 from left to right. The movement of the mobile device 2 from right to left is similar, and it is only necessary to set the transmission direction of the first transmission mechanism.

[0060] The rotating wheel 32 may be a synchronous wheel, and the corresponding connecting belt 31 may be a synchronous belt; or the rotating wheel 32 may be a V-shaped wheel, and the corresponding connecting belt 31 may be a V-shaped belt, and the V-shaped belt drives the V-shaped wheel to rotate synchronously through friction; or the rotating wheel 32 may be a sprocket, and the connecting belt 31 may be a chain; of course, other structures may also be used to make the rotating wheel 32 and the connecting belt 31 rotate synchronously.

[0061] Optionally, the first body 42 is provided with a first photovoltaic panel 44, a first motor 43 is connected to the first photovoltaic panel 44, and further includes first cleaning mechanisms 51 disposed on the left and right edges of the photovoltaic panel 1. When the cleaning device 4 passes through the first cleaning mechanisms 51, the first photovoltaic panel 44 comes into contact with the first cleaning mechanisms 51 to clean the first photovoltaic panel 44. The first photovoltaic panel 44 can be a conventional photovoltaic panel or a thin-film photovoltaic panel to conform to the streamlined upper surface of the first body 42.

[0062] See also Figure 1 and Figure 7 and Figure 16 The first cleaning mechanism 51 may include a first fixed rod 511 and a rotatable first roller brush 512. When the cleaning device 4 passes through the first cleaning mechanism 51, the first power generation photovoltaic panel 44 contacts the first roller brush 512, and the first roller brush 512 passively rotates to clean the first power generation photovoltaic panel 44.

[0063] Alternatively, see Figure 5 and Figure 6 as well as Figure 11 、 Figure 12 and Figure 13The bottom of the first body 42 is provided with a first hollow portion 421. The roller brush 411 or disc brush 412 is located within the first hollow portion 421. The height difference between the lowest edge of the roller brush 411 or disc brush 412 and the lowest edge of the first body 42 is less than or equal to a first predetermined distance. The first predetermined distance can be determined as needed to ensure that the lowest edge of the first body 42 is slightly higher than the lowest edge of the roller brush 411 or disc brush 412. This ensures that the roller brush 411 or disc brush 412 can contact and clean the photovoltaic panel 1 while minimizing the distance between the lowest edge of the first body 42 and the photovoltaic panel 1. This prevents wind from blowing into the bottom of the first body 42 and overturning the cleaning device 4. The first body 42 can be streamlined to further reduce wind resistance and the risk of the cleaning device 4 being overturned by wind.

[0064] Alternatively, see Figure 2 and Figure 3 as well as Figure 7 、 Figure 8 and Figure 9 The mobile device 2 includes a second body 22, on which are rotatably provided running wheels 23 for rolling on the first surface 121, the second surface 122 and the third surface 123 of the high-end side 12 of the photovoltaic panel 1. A second power generation photovoltaic panel 24 is provided on the second body 22, and the second power generation photovoltaic panel 24 is connected to the second motor 21, and the second motor 21 is transmission-connected to at least one running wheel 23; it also includes a second cleaning mechanism 52 arranged on the high-end side 12 of the photovoltaic panel 1. When the mobile device 2 passes through the second cleaning mechanism 52, the second power generation photovoltaic panel 24 contacts the second cleaning mechanism 52 to clean the second power generation photovoltaic panel 24.

[0065] The second cleaning mechanism 52 may include a second fixed rod 521 and a rotatable second roller brush 522 . When the mobile device 2 passes through the second cleaning mechanism 52 , the second photovoltaic panel 24 contacts the second roller brush 522 , and the second roller brush 522 passively rotates to clean the second photovoltaic panel 24 .

[0066] Movement principle of the moving device 2:

[0067] Because the running wheels 23 of the mobile device 2 are respectively located on the first surface 121, the second surface 122, and the third surface 123 of the high-end side 12 of the photovoltaic panel 1, the mobile device 2 can be prevented from escaping from the high-end side 12. The second motor 21 is in transmission connection with at least one running wheel 23. The running wheel 23 in transmission connection with the second motor 21 primarily drives the movement of the mobile device 2, while the other running wheels 23 assist in the movement of the mobile device 2, thereby enabling the mobile device 2 to move along the high-end side 12. In this way, the running wheels 23 form rolling friction with the first surface 121, the second surface 122, and the third surface 123, thereby reducing the movement resistance of the mobile device 2.

[0068] Alternatively, see Figure 11 The bottom of the first body 42 may also be provided with an auxiliary walking portion 46. Adding the auxiliary walking portion 46 can increase the mobility of the cleaning device 4. The auxiliary walking portion 46 may be a universal wheel, preferably a bull's eye wheel. The auxiliary walking portion 46 may also be a fine-bristled brush disposed at the four corners of the bottom of the first body 42. Since the cleaning device 4 needs to move left and right while moving up and down, driven by the moving device 2, configuring the auxiliary walking portion 46 as a universal wheel facilitates the mobility of the cleaning device 4.

[0069] A preferred embodiment is described below: Figure 1-17 The photovoltaic panel cleaning device includes a mobile device 2, which is disposed on the high-end side 12 of the photovoltaic panel 1. The mobile device 2 includes a second body 22. The second body 22 is preferably streamlined. A second motor 21 and running wheels 23 are provided on the second body 22. The second motor is in transmission connection with at least one running wheel 23, and the running wheels 23 roll laterally on the first surface 121, the second surface 122, and the third surface 123 of the high-end side 12 of the photovoltaic panel 1. The second body 22 is also provided with a second power generation photovoltaic panel 24. When the second body 22 is streamlined, the second power generation photovoltaic panel 24 can be a thin-film power generation photovoltaic panel attached to the outer surface of the second body 22. When the second power generation photovoltaic panel 24 is a traditional power generation photovoltaic panel, the second power generation photovoltaic panel 24 can be substantially parallel to the photovoltaic panel 1. A position detection device and a controller are provided on the mobile device 2. When the controller detects that the mobile device 2 has moved to the left limit position or the right limit position, the controller begins to control the mobile device 2 to move in the opposite direction. Among them, the second power generation photovoltaic panel 24 can directly supply power to the second motor 21. When the second power generation photovoltaic panel 24 receives sunlight to generate electricity, the electricity is transmitted to the second motor 21, the second motor 21 rotates, and the mobile device 2 moves; when the second power generation photovoltaic panel 24 receives insufficient light and cannot generate enough electricity, the second motor 21 stops rotating and the mobile device 2 stops moving. A suspension mechanism 3 is provided on the second body 22. The suspension mechanism 3 may include two rotating wheels 32. The rotating wheel 32 may be a fixed pulley, which is rotatably arranged on the second body 22 through the first axis 33. The rotating wheel 32 may be parallel to the photovoltaic panel 1. A connecting belt 31 is wrapped around the rotating wheel 32, and a cleaning device 4 is connected to each end of the connecting belt 31. The cleaning device 4 includes a first body 42. The external shape of the first body 42 is set to be streamlined, see Figure 4 and Figure 10 , can be truncated cone-shaped, or a similar mountain-shaped wave shape. Figure 5 、 Figure 11 and Figure 12The first body 42 is provided with a first motor 43, which is in transmission connection with the roller brush 411. A first hollow portion 421 is provided at the bottom of the first body 42. The roller brush 411 is located within the first hollow portion 421 and is rotatably mounted on the first body 42 via a second shaft 45. The bottom edge of the first body 42 is slightly higher than the lowest edge of the roller brush 411. An auxiliary walking portion 46 is provided at the bottom of the first body 42. A first photovoltaic panel 44 is provided on the outer surface of the first body 42. The first photovoltaic panel 44 can be a thin-film photovoltaic panel to fit the streamlined shape of the first body 42, allowing it to be attached to the outer surface of the first body 42. The first photovoltaic panel 44 can directly power the first motor 43. When the first photovoltaic panel 44 receives sunlight and generates electricity, the electricity is transmitted to the first motor 43, causing the first motor 43 to rotate, which in turn rotates the roller brush 411, driving the cleaning device 4 to move and clean the photovoltaic panel 1. The two cleaning devices 4 are pulled by the connecting belt 31, so one cleaning device 4 moves upward and the other cleaning device 4 moves downward. The cleaning devices 4 can be provided with position sensors and controllers. When the position sensor and controller detect that the cleaning device 4 has moved to the upper limit position or the lower limit position, the controller controls the cleaning device 4 to move in the opposite direction. In addition, since the moving device 2 moves in the horizontal direction, the moving device 2 will drive the two cleaning devices 4 to move in the horizontal direction while the two cleaning devices 4 move up and down. Figure 1 and Figure 7 The photovoltaic panel 1 is provided with a first cleaning mechanism 51 on both sides. The first cleaning mechanism 51 may include a first fixing rod 511 and a first rolling brush 512. The high-end side 12 of the photovoltaic panel 1 is provided with a second cleaning mechanism 52. The second cleaning mechanism 52 includes a second fixing rod 521 and a second rolling brush 522. When the cleaning device 4 moves past the first cleaning mechanism 51, the first photovoltaic panel 44 comes into contact with the first rolling brush 512, and the first rolling brush 512 cleans the first photovoltaic panel 44. When the moving device 2 moves to the position of the second rolling brush 522, the second photovoltaic panel 24 comes into contact with the second rolling brush 522, and the second rolling brush 522 cleans the second photovoltaic panel 24.

[0070] Another preferred embodiment provided by the present invention is to replace the roller brush 411 of the previous embodiment with a disc brush 412 .

[0071] The present invention also provides a photovoltaic panel assembly, comprising an inclined photovoltaic panel 1, on which a photovoltaic panel cleaning device is disposed. The photovoltaic panel 1 comprises an inclined photovoltaic panel 1, on which a photovoltaic panel cleaning device is disposed. The photovoltaic panel cleaning device comprises: a moving device 2, comprising a second body 22, on which are rotatably provided running wheels 23 for rolling on the first surface 121, the second surface 122, and the third surface 123 of the high-end side 12 of the photovoltaic panel 1; a second power-generating photovoltaic panel 24 and a second motor 21 disposed on the second body 22; the second power-generating photovoltaic panel 24 is connected to the second motor 21, and the second motor 21 is transmission-connected to at least one running wheel 23; and a suspension mechanism 3, comprising a rotating wheel 32 disposed on the second body 22 and a connecting belt 31 wound around the rotating wheel 32. The rotating wheel 32 may be a fixed pulley. At least two cleaning devices 4 are connected to the ends of the connecting belt 31. The cleaning devices 4 include a first body 42, which is equipped with a first motor 43 and a first photovoltaic panel 44. The first motor 43 is connected to the first photovoltaic panel 44. A roller brush 411 or a disc brush 412 is provided at the bottom of the first body 42. The roller brush 411 or the disc brush 412 is in driving connection with the first motor 43. When the roller brush 411 or the disc brush 412 rotates, it drives the cleaning devices 4 to move. The cleaning mechanism 5 includes a first cleaning mechanism 51 disposed on the left and right edges of the photovoltaic panel 1, and a second cleaning mechanism 52 disposed on the high side 12 of the photovoltaic panel 1. When the cleaning device 4 passes the first cleaning mechanism 51, the first photovoltaic panel 44 comes into contact with the first cleaning mechanism 51 to clean the first photovoltaic panel 44. When the moving device 2 passes the second cleaning mechanism 52, the second photovoltaic panel 24 comes into contact with the second cleaning mechanism 52 to clean the second photovoltaic panel 24.

[0072] The above embodiments are merely illustrative of the present invention and are not intended to limit the present invention. Under the concept of the present invention, technical solutions that have not been substantially changed are still within the protection scope of the present invention.

Claims

1. A photovoltaic panel cleaning device, comprising a moving device that can move along the extension direction of the high end side of the photovoltaic panel, characterized in that: The movable device is provided with a suspension mechanism, and a reciprocating connecting belt is suspended on the suspension mechanism. A cleaning device is connected to each end of the connecting belt, and the two cleaning devices maintain balance based on their own gravity; the cleaning device is provided with a rotatable cleaning part, and the cleaning part rotates to clean the photovoltaic panel and drives the two cleaning devices to move in opposite directions.

2. The photovoltaic panel cleaning device according to claim 1, characterized in that: The cleaning device includes a first body, and the first body is provided with a first motor; The cleaning part includes a roller brush rotatably arranged at the bottom of the first body, and the roller brush is connected to the first motor. When the roller brush rotates, it drives the cleaning device to move and clean the photovoltaic panel; or, the cleaning part includes a disc brush rotatably arranged at the bottom of the first body, and the disc brush is connected to the first motor. When the disc brush rotates, it drives the cleaning device to move and clean the photovoltaic panel.

3. The photovoltaic panel cleaning device according to claim 2, characterized in that: At least one of the cleaning devices is also provided with a first winding roller and a first winding motor, the end of the connecting belt is connected to the first winding roller, the first winding roller is transmission-connected to the first winding motor, and the high-end side of the photovoltaic panel is also provided with a docking cabin for the mobile device and the cleaning device to dock.

4. The photovoltaic panel cleaning device according to claim 2, characterized in that: The number of the roller brushes is set to two.

5. The photovoltaic panel cleaning device according to claim 1, wherein: The driving mechanism of the cleaning device is a first motor, the driving mechanism of the moving device is a second motor, and the power supply devices of the first motor and the second motor are both photovoltaic panels.

6. The photovoltaic panel cleaning device according to claim 2, wherein: The moving device includes a second body, which is provided with a walking wheel that moves along the high-end side of the photovoltaic panel. The suspension mechanism includes a rotating wheel rotatably arranged on the second body, and the rotating wheel and the rotating shaft of the walking wheel are connected through a first transmission mechanism. The first transmission mechanism includes at least two transmission modes: unidirectional transmission and reverse transmission; the connecting belt is wrapped around the rotating wheel and moves synchronously with the rotating wheel; when the two cleaning devices move in opposite directions, the connecting belt drives the rotating wheel to rotate, and drives the walking wheel to move under the transmission of the first transmission mechanism.

7. The photovoltaic panel cleaning device according to claim 2, wherein: A first power generation photovoltaic panel is provided on the first body, the first motor is connected to the first power generation photovoltaic panel, and also includes a first cleaning mechanism arranged on the left edge and the right edge of the photovoltaic panel. When the cleaning device passes through the first cleaning mechanism, the first power generation photovoltaic panel contacts the first cleaning mechanism to clean the first power generation photovoltaic panel.

8. The photovoltaic panel cleaning device according to claim 2, wherein: A first hollow portion is provided at the bottom of the first body, the roller brush or the disc brush is located in the first hollow portion, the height difference between the lowest side of the roller brush or the disc brush and the lowest side of the first body is less than or equal to a first preset distance, and the external shape of the first body is streamlined for windproofing.

9. The photovoltaic panel cleaning device according to claim 1, wherein: The mobile device includes a second body, on which are rotatably provided running wheels for rolling on the first, second and third surfaces of the high-end side of the photovoltaic panel, a second power-generating photovoltaic panel and a second motor are provided on the second body, the second power-generating photovoltaic panel is connected to the second motor, and the second motor is transmission-connected to at least one of the running wheels.

10. The photovoltaic panel cleaning device according to claim 9, characterized in that: It also includes a second cleaning mechanism arranged on the high end side of the photovoltaic panel. When the moving device passes through the second cleaning mechanism, the second power generation photovoltaic panel contacts the second cleaning mechanism to clean the second power generation photovoltaic panel.

11. The photovoltaic panel cleaning device according to claim 2, wherein: An auxiliary walking portion is also provided at the bottom of the first body.

12. A photovoltaic panel assembly comprising a photovoltaic panel arranged at an angle, wherein a photovoltaic panel cleaning device is provided on the photovoltaic panel, characterized in that: The photovoltaic panel cleaning device comprises: A mobile device, the mobile device comprising a second body, the second body being rotatably provided with running wheels for rolling on the first surface, the second surface, and the third surface of the high-end side of the photovoltaic panel, the second body being provided with a second power generation photovoltaic panel and a second motor, the second power generation photovoltaic panel being connected to the second motor, and the second motor being transmission-connected to at least one of the running wheels; a suspension mechanism comprising a rotating wheel provided on the second body and a connecting belt wound around the rotating wheel; At least two cleaning devices, the two cleaning devices are respectively connected to the two ends of the connecting belt, the cleaning device includes a first body, a first motor and a first power generation photovoltaic panel are provided on the first body, the first motor is connected to the first power generation photovoltaic panel, and a roller brush or a disc brush is provided at the bottom of the first body, the roller brush or the disc brush is transmission-connected to the first motor, and when the roller brush or the disc brush rotates, it drives the cleaning device to move; A cleaning mechanism, the cleaning mechanism includes a first cleaning mechanism arranged at the left edge and the right edge of the photovoltaic panel, and a second cleaning mechanism arranged at the high end side of the photovoltaic panel, when the cleaning device passes through the first cleaning mechanism, the first power generation photovoltaic panel contacts the first cleaning mechanism to clean the first power generation photovoltaic panel, when the moving device passes through the second cleaning mechanism, the second power generation photovoltaic panel contacts the second cleaning mechanism to clean the second power generation photovoltaic panel.

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