Method and equipment for automatically cleaning multiple dirt on photovoltaic cell panel

Abstract

The invention discloses a photovoltaic cell panel multi-dirt automatic cleaning method and device. The device comprises two guide rails, a frame, a dust removal mechanism, a cleaning mechanism and two walking driving mechanisms, wherein the dust removal mechanism, the cleaning mechanism and the two walking driving mechanisms are installed on the frame. A plurality of groups of photovoltaic cell panels are fixedly mounted between the two guide rails; the two walking driving mechanisms are installed on the two sides of the frame correspondingly. The cleaning mechanism comprises a plurality of cleaning rollers, each cleaning roller is rotatably mounted on the frame through a rotating shaft of the cleaning roller, and the cleaning rollers can roll on the surface of the photovoltaic cell panel; the dust removal mechanism comprises a dust removal shell, a negative pressure fan and a dust collection bar; the dust removal shell is columnar and perpendicular to the guide rail, a strip-shaped dust suction opening is formed in the bottom of the dust removal shell, and the negative pressure fan is installed at one end in the dust removal shell and used for providing negative pressure at the dust suction opening; the dust collection rod is mounted in the dust collection shell, and the dust collection rod and the inner wall of the dust collection shell serve as the positive electrode and the negative electrode of the electrostatic adsorption electrode correspondingly and are used for adsorbing dust through static electricity.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaic panel cleaning, and in particular to an automatic cleaning device for photovoltaic panels with a lot of dirt. Background Art

[0002] As people pay more and more attention to environmental protection and sustainable development, solar energy as a renewable energy source has gradually become one of the important new energy sources. At present, the main way to use solar energy is photovoltaic power generation, which is also a relatively mature technology. Photovoltaic panels that have been exposed to the outside for a long time will accumulate a lot of dust and even bird droppings or other dirt, which will affect the power generation efficiency, so regular cleaning of photovoltaic panels is a must.

[0003] The common cleaning method is to use a high-pressure water gun, a mop and a special cleaning agent for manual cleaning. When cleaning manually, you need to be extra careful to avoid using hard and sharp objects to directly contact the solar panels, otherwise it may damage the panels and affect their service life. In addition, the existing cleaning method requires the use of a lot of water, which wastes resources and is not suitable for special scenarios, such as photovoltaic power stations built in water-scarce deserts. Summary of the invention

[0004] In order to solve the problems raised in the above background technology, the technical solution adopted by the present invention is:

[0005] An automatic cleaning device for photovoltaic panels with a lot of dirt, comprising two guide rails, a frame, a dust removal mechanism installed on the frame, a cleaning mechanism and two travel drive mechanisms;

[0006] The two guide rails are parallel to each other, and a number of photovoltaic panels are fixedly installed between the two guide rails;

[0007] Two travel drive mechanisms are respectively installed on both sides of the frame, and the two travel drive mechanisms are respectively matched with two guide rails, and the travel drive mechanisms can move along the guide rails, thereby driving the dust removal mechanism and the cleaning mechanism to move on the upper surface of the photovoltaic panel;

[0008] The cleaning mechanism includes a plurality of cleaning rollers, each of which is rotatably mounted on the frame through its rotating shaft, and the cleaning roller can roll on the surface of the photovoltaic panel;

[0009] The dust removal mechanism includes a dust removal shell, a negative pressure fan and a dust suction rod;

[0010] The dust removal housing is columnar and perpendicular to the guide rail, a strip-shaped dust suction port is provided at the bottom of the dust removal housing, and the negative pressure fan is installed at one end of the dust removal housing to provide negative pressure at the dust suction port;

[0011] The dust suction rod is installed inside the dust removal shell, and the dust suction rod and the inner wall of the dust removal shell away from the dust suction port serve as two poles of the electrostatic adsorption electrode respectively, for adsorbing dust by static electricity.

[0012] In some embodiments, any one of the travel drive mechanisms includes a drive motor, a pair of upper travel wheels, a pair of lower travel wheels, an upper wheel frame, a lower wheel frame and a transmission belt;

[0013] A pair of upper running wheels are located above the guide rail and can roll along the upper surface of the guide rail, and a pair of lower running wheels are located below the guide rail and can roll along the lower surface of the guide rail;

[0014] A pair of upper running wheels are symmetrically mounted on both sides of the lower part of the upper wheel frame through their respective rotating shafts, and a pair of lower running wheels are symmetrically mounted on both sides of the upper part of the lower wheel frame through their respective rotating shafts;

[0015] The upper end of the upper wheel frame is connected to the upper part of the frame on the side through a plurality of shock absorbing springs, and the lower end of the lower wheel frame is connected to the lower part of the frame on the side through a plurality of shock absorbing springs;

[0016] The driving motor is installed above the upper wheel frame, and the wheel axles of a pair of upper traveling wheels are both drivingly connected to the output shaft of the driving motor through a transmission belt.

[0017] In some embodiments, for any one of the travel drive mechanisms, it also includes two pairs of middle protection wheels and middle wheel frames;

[0018] The two pairs of center protection wheels are both located outside the guide rail and can roll along the outer side of the guide rail;

[0019] The middle wheel frame is fixedly mounted on the outer side of the upper wheel frame, and the middle wheel frame extends downward to the left and right sides;

[0020] One pair of center protection wheels is symmetrically installed on one side below the center wheel frame through their respective wheel axles, and the other pair of center protection wheels is symmetrically installed on the other side below the center wheel frame through their respective wheel axles.

[0021] In some embodiments, the cleaning mechanism further comprises a liquid storage housing;

[0022] The liquid storage shells are all columnar and perpendicular to the guide rails, and the liquid storage shells are arranged between the dust removal shell and a plurality of cleaning rollers;

[0023] Each of the cleaning rollers is equipped with a corresponding roller motor;

[0024] Cleaning liquid is stored in the liquid storage shell, and a plurality of openable and closable liquid outlets are provided at the bottom of the liquid storage shell, and an openable and closable liquid filling port is also provided at the top of the liquid storage shell.

[0025] In some embodiments, the negative pressure fan is installed on a higher side of the dust removal housing, the dust removal housing is provided with an air outlet on the side, and an openable and closable dust discharge port is provided on the other side;

[0026] In the dust removal housing, a filter screen for filtering dust is also arranged at the front end of the negative pressure fan.

[0027] In some embodiments, for multiple groups of photovoltaic panels in the same row, two guide rails are extended so that the multiple groups of photovoltaic panels in the same row are located between the two guide rails.

[0028] On the other hand, the present invention provides a method for automatically cleaning a photovoltaic panel with a lot of dirt, using the above-mentioned automatic cleaning device for a photovoltaic panel with a lot of dirt, and using the direct current generated by connecting the electric wires to the photovoltaic panel to serve as the working power source for the automatic cleaning device for a photovoltaic panel with a lot of dirt.

[0029] In some embodiments, the photovoltaic panel automatic cleaning device also includes a central control module and a wireless module. When working, the photovoltaic panel cleaning is automatically completed based on the preset program configured in the central control module, or the staff remotely controls the photovoltaic panel through a remote control device in conjunction with the wireless module to complete the cleaning of the photovoltaic panel.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] The photovoltaic panel automatic cleaning method and equipment provided by the present invention perform negative pressure dust removal by using a negative pressure fan, and at the same time, electrostatic dust removal is realized by using a dust collecting rod connected with high voltage direct current and the inner wall of a dust collecting shell. After the dust (including large particles of garbage) is attracted and rolled up by the negative pressure, the electrostatic absorption capacity of the dust collecting rod can be fully utilized, and the two cooperate perfectly with each other, so that the dust removal effect is better and the dust removal efficiency is higher. Moreover, when the dust needs to be discharged, there is no need to set up a vibration device separately. After the dust collecting rod and the inner wall of the dust collecting shell are powered off (at the same time), the vibration force of the negative pressure fan during operation can accelerate the separation of the dust from the dust collecting rod. Finally, in combination with a cleaning mechanism, stubborn adhesions can be cleaned, and the cleaning effect is good, and movable particles, dust and immovable dirt such as bird droppings on the photovoltaic panel can be effectively cleaned. Through the effective coordination of the three processes of negative pressure dust removal, electrostatic dust removal and liquid immersion cleaning, the three functions complement each other, not only the effect is perfect, but also the photovoltaic panels will not be damaged and water resources can be saved; through the travel drive mechanism and the guide rail, the automatic movement of the equipment can be realized and the cleaning can be completed at the same time, and one device can simultaneously complete the cleaning of multiple groups of photovoltaic panels between the two guide rails; when the equipment is working, the direct current generated by photovoltaic power generation can be used on-site to supply DC motor drive and DC electrostatic dust removal without going through an inverter, avoiding the energy consumption and inconvenience of converting AC mains power into DC power, and also avoiding the extra cost of additional rectification and voltage stabilization equipment, and the electromagnetic torque of DC is larger and stronger than that of AC motor drive. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram of a photovoltaic panel multi-dirt automatic cleaning device provided by the present invention;

[0033] Figure 2 for Figure 1 A schematic diagram of another perspective of the structure in the middle;

[0034] Figure 3 for Figure 1 A schematic diagram of another perspective of the structure in the middle;

[0035] Figure 4 It is a schematic diagram of the interior of the dust removal housing;

[0036] Figure 5 is a schematic diagram of a walking drive mechanism;

[0037] Figure 6 Schematic diagram of the liquid storage housing.

[0038] Explanation of the accompanying drawings: 1. Guide rail; 2. Frame; 3. Dust removal mechanism; 4. Cleaning mechanism; 5. Travel drive mechanism; 6. Photovoltaic panel; 31. Dust removal housing; 32. Negative pressure fan; 33. Dust suction rod; 34. Dust suction port; 35. Ash discharge port; 36. Filter; 41. Cleaning roller; 42. Liquid storage housing; 43. Liquid outlet; 51. Drive motor; 52. Upper walking wheel; 53. Lower walking wheel; 54. Upper wheel frame; 55. Lower wheel frame; 56. Conveyor belt; 57. Middle protection wheel; 58. Middle wheel frame; 59. Shock-absorbing spring. DETAILED DESCRIPTION

[0039] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the following further describes how the present invention is implemented in conjunction with the accompanying drawings and specific implementation methods.

[0040] Reference Figure 1-Figure 4 As shown, the present invention provides a photovoltaic panel multi-dirt automatic cleaning device, comprising two guide rails 1, a frame 2, a dust removal mechanism 3 installed on the frame 2, a cleaning mechanism 4 and two travel drive mechanisms 5; the two guide rails 1 are parallel to each other, and a plurality of photovoltaic panels 6 are fixedly installed between the two guide rails 1; the two travel drive mechanisms 5 are respectively installed on both sides of the frame 2, and the two travel drive mechanisms 5 are respectively matched with the two guide rails 1, and the travel drive mechanisms 5 can move along the guide rails 1, thereby driving the dust removal mechanism 3 and the cleaning mechanism 4 to move on the upper surface of the photovoltaic panel 6; the cleaning mechanism 4 includes a plurality of cleaning rollers 41, each of which is provided with a plurality of cleaning rollers 41. The cleaning rollers 41 are rotatably mounted on the frame 2 through their rotating shafts, and the cleaning rollers 41 can roll on the surface of the photovoltaic panel 6; the dust removal mechanism 3 includes a dust removal shell 31, a negative pressure fan 32 and a dust suction rod 33; the dust removal shell 31 is columnar and perpendicular to the guide rail 1, and a strip-shaped dust suction port 34 is provided at the bottom of the dust removal shell 31. The negative pressure fan 32 is installed at one end of the dust removal shell 31 to provide negative pressure at the dust suction port 34; the dust suction rod 33 is installed inside the dust removal shell 31, and the dust suction rod 33 and the inner wall of the dust removal shell 31 away from the dust suction port 34 respectively serve as the two poles of the electrostatic adsorption electrode, which is used to adsorb dust by static electricity.

[0041] The dust suction rod 31 can be branched to form multiple rods that are parallel to each other and have the same polarity to increase the effective adsorption area; the inner wall of the dust removal shell 31, as another pole, can be designed as a corrugated inner wall to further increase the effective adsorption area, thereby significantly improving the electrostatic adsorption effect.

[0042] The present invention utilizes a negative pressure fan 32 to perform negative pressure dust removal, and at the same time utilizes a dust collecting rod 33 and the inner wall of the dust collecting shell to which high voltage direct current is passed, to realize electrostatic dust removal. After the dust (including large particles of garbage) is sucked by negative pressure and rolled into the dust collecting port 34, the electrostatic absorption capacity of the dust collecting rod 33 and the inner wall of the dust collecting shell can be fully utilized. The two cooperate perfectly front and back, and the dust removal effect is better and the dust removal efficiency is higher. Moreover, when the dust needs to be discharged, there is no need to set up a vibration device separately. After the dust collecting rod 33 and the dust collecting shell are powered off (at the same time), the vibration force of the negative pressure fan 32 when working can accelerate the separation of dust from the dust collecting rod 33 and the inner wall of the dust collecting shell.

[0043] Preferably, further referring to Figure 5, for any walking drive mechanism 5, it includes a driving motor 51, a pair of upper walking wheels 52, a pair of lower walking wheels 53, an upper wheel frame 54, a lower wheel frame 55 and a transmission belt 56; the pair of upper walking wheels 52 are located above the guide rail 1 and can roll along the upper surface of the guide rail 1, and the pair of lower walking wheels 53 are located below the guide rail 1 and can roll along the lower surface of the guide rail 1; the pair of upper walking wheels 52 are symmetrically installed on the lower sides of the upper wheel frame 54 through their respective rotating axes, and the pair of lower walking wheels 53 are symmetrically installed on the upper sides of the lower wheel frame 55 through their respective rotating axes; the upper end of the upper wheel frame 54 is connected to the upper part of the frame 2 on this side through a plurality of shock-absorbing springs 59, and the lower end of the lower wheel frame 55 is connected to the lower part of the frame 2 on this side through a plurality of shock-absorbing springs 59; the driving motor 51 is installed above the upper wheel frame 54, and the wheel axles of the pair of upper walking wheels 52 are both connected to the output shaft of the driving motor 51 through a transmission belt 56.

[0044] Furthermore, for any walking drive mechanism 5, it also includes two pairs of center protection wheels 57 and a middle wheel frame 58; the two pairs of center protection wheels 57 are located on the outside of the guide rail 1 and can roll along the outer side of the guide rail 1; the middle wheel frame 58 is fixedly installed on the outside of the upper wheel frame 54, and the middle wheel frame 58 extends to the left and right sides downward; one pair of center protection wheels 57 is symmetrically installed on one side below the middle wheel frame 58 through their respective wheel axles, and the other pair of center protection wheels 57 is symmetrically installed on the other side below the middle wheel frame 58 through their respective wheel axles.

[0045] The present invention can realize automatic movement of the equipment and complete cleaning at the same time by cooperating with the guide rail 1 through the travel drive mechanism 5. In the travel drive mechanism 5, the driving motor 51 provides power, and through the transmission of the transmission belt 56, the upper travel wheel 52 is driven to rotate and move, and the lower travel wheel 53 and the middle protection wheel 57 also passively follow the rotation and move; and a shock-absorbing spring 59 is designed to provide shock absorption when the equipment is running, reducing the hard contact with the photovoltaic panel 6 and causing damage to the surface of the photovoltaic panel 6; and a middle protection wheel 57 on the outside of the guide rail 1 is also designed to ensure stability during walking and avoid derailment.

[0046] Preferably, further reference is made to Figure 6As shown, the cleaning mechanism 4 also includes a liquid storage shell 42; the liquid storage shell 42 is columnar and perpendicular to the guide rail 1, and the liquid storage shell 42 is arranged between the dust removal shell 31 and a plurality of cleaning rollers 41; each cleaning roller 41 is configured with a corresponding roller motor; cleaning liquid is stored in the liquid storage shell 42, and a plurality of openable and closable liquid outlets 43 are provided at the bottom of the liquid storage shell 42, and a openable and closable liquid filling port is also provided at the top of the liquid storage shell 42.

[0047] The cleaning mechanism 4 in the present invention discharges the pre-stored cleaning liquid through the liquid storage shell 42, and combined with the rotating scrubbing of the cleaning roller 41, it can clean the stubborn adhesions, and has a good cleaning effect. It can effectively clean the movable particles, dust, bird droppings and other dirt on the photovoltaic panels without damaging the photovoltaic panels, and saves water resources.

[0048] Preferably, the negative pressure fan 32 is installed on a higher side of the dust removal housing 31, the dust removal housing 31 is provided with an air outlet on this side, and an openable and closable dust discharge port 35 is provided on the other side; in the dust removal housing 31, a filter 36 for filtering dust is also configured at the front end of the negative pressure fan 32. The filter 36 can prevent dust from directly contacting the negative pressure fan 32, thereby increasing the service life of the negative pressure fan 32.

[0049] Preferably, for multiple groups of photovoltaic panels 6 in the same row, two guide rails 1 are extended so that the multiple groups of photovoltaic panels 6 in the same row are located between the two guide rails 1. The present invention uses the guide rails 1 to connect multiple groups of photovoltaic panels 6, so that one device can correspond to multiple photovoltaic arrays, and one device can simultaneously complete the cleaning of multiple groups of photovoltaic panels 6 between two guide rails 1, thereby improving cost performance.

[0050] On the other hand, the present invention provides a method for automatically cleaning a photovoltaic panel with a lot of dirt, using the above-mentioned automatic cleaning device for a photovoltaic panel with a lot of dirt, and using the direct current generated by the photovoltaic panel 6 through the electric wire as the working power supply of the automatic cleaning device for a photovoltaic panel with a lot of dirt. When the device is working, the direct current generated by photovoltaic power generation can be used on-site for driving a DC motor and for DC electrostatic dust removal without going through an inverter, thus avoiding the energy consumption and inconvenience of converting AC mains power into DC power, and also avoiding the extra cost of additional rectification and voltage stabilization equipment, and the electromagnetic torque of DC is larger and stronger than that of AC motor drive.

[0051] Furthermore, the photovoltaic panel multi-contamination automatic cleaning device also includes a central control module and a wireless module. When working, the photovoltaic panel 6 is automatically cleaned based on the preset program configured in the central control module, or the staff remotely controls the photovoltaic panel 6 through a remote control device in conjunction with the wireless module to complete the cleaning of the photovoltaic panel 6.

[0052] In a specific embodiment, before the device is operated, a sufficient amount of cleaning liquid is first added to the liquid storage shell 42. During operation, the dust removal mechanism 3 cooperates with negative pressure dust removal and electrostatic dust removal to suck the dust on the surface of the photovoltaic panel 6 into the dust removal shell; the cleaning mechanism 4 discharges the pre-stored cleaning liquid through the liquid storage shell 42, and cleans the stubborn adhesions in combination with the rotation and scrubbing of the cleaning roller 41. In addition, several dust discharge positions can be preset, such as in the open area between two groups of photovoltaic panels 6. When the walking drive mechanism 5 drives the device as a whole to move to this place, it enters the dust discharge mode, the negative pressure fan 32 and the dust suction rod 33 stop working, and the dust discharge port 35 of the dust removal mechanism 3 is automatically opened, so that the dust inside the dust removal shell 31 is automatically discharged through the dust discharge port 35 and the dust suction port 34; if necessary, it can also be set that in the dust discharge mode, the negative pressure fan 32 is reversed to blow out the dust inside the dust removal shell 31, accelerate the dust discharge, and the vibration force of the negative pressure fan 32 when working can accelerate the separation of dust and the dust removal rod 33.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. An automatic cleaning device for photovoltaic panels with multiple dirt, characterized in that: It comprises two guide rails (1), a frame (2), a dust removal mechanism (3) installed on the frame (2), a cleaning mechanism (4) and two travel drive mechanisms (5); The two guide rails (1) are parallel to each other, and a plurality of groups of photovoltaic panels (6) are fixedly installed between the two guide rails (1); Two travel drive mechanisms (5) are respectively installed on both sides of the frame (2), and the two travel drive mechanisms (5) are respectively matched with two guide rails (1), and the travel drive mechanisms (5) can move along the guide rails (1), thereby driving the dust removal mechanism (3) and the cleaning mechanism (4) to move on the upper surface of the photovoltaic panel (6); The cleaning mechanism (4) comprises a plurality of cleaning rollers (41), each of the cleaning rollers (41) being rotatably mounted on the frame (2) via its rotating shaft, and the cleaning rollers (41) being capable of rolling on the surface of the photovoltaic cell panel (6); The dust removal mechanism (3) comprises a dust removal housing (31), a negative pressure fan (32) and a dust suction rod (33); The dust removal housing (31) is columnar and perpendicular to the guide rail (1); a strip-shaped dust suction port (34) is provided at the bottom of the dust removal housing (31); and the negative pressure fan (32) is installed at one end of the dust removal housing (31) to provide negative pressure at the dust suction port (34); The dust suction rod (33) is installed inside the dust removal shell (31), the dust suction rod (33) and the dust removal shell (31) are far away from the dust suction port (34), and the dust suction rod and the inner wall of the dust removal shell serve as the positive and negative poles of the electrostatic adsorption electrode respectively, for adsorbing dust by electrostatic means.

2. The photovoltaic panel multi-dirt automatic cleaning device according to claim 1 is characterized in that: Any one of the travel drive mechanisms (5) comprises a drive motor (51), a pair of upper travel wheels (52), a pair of lower travel wheels (53), an upper wheel frame (54), a lower wheel frame (55) and a transmission belt (56); A pair of upper running wheels (52) are located above the guide rail (1) and are capable of rolling along the upper surface of the guide rail (1), and a pair of lower running wheels (53) are located below the guide rail (1) and are capable of rolling along the lower surface of the guide rail (1); A pair of upper running wheels (52) are symmetrically mounted on both sides below the upper wheel frame (54) via respective rotating shafts, and a pair of lower running wheels (53) are symmetrically mounted on both sides above the lower wheel frame (55) via respective rotating shafts; The upper end of the upper wheel frame (54) is connected to the upper part of the frame (2) on this side through a plurality of shock absorbing springs (59), and the lower end of the lower wheel frame (55) is connected to the lower part of the frame (2) on this side through a plurality of shock absorbing springs (59); The driving motor (51) is installed above the upper wheel frame (54), and the wheel axles of a pair of upper running wheels (52) are both connected to the output shaft of the driving motor (51) through a transmission belt (56).

3. The photovoltaic panel multi-dirt automatic cleaning device according to claim 2 is characterized in that: Any travel drive mechanism (5) further comprises two pairs of middle protection wheels (57) and middle wheel frames (58); The two pairs of centering protection wheels (57) are both located outside the guide rail (1) and are capable of rolling along the outer side of the guide rail (1); The middle wheel frame (58) is fixedly mounted on the outer side of the upper wheel frame (54), and the middle wheel frame (58) extends downward to the left and right sides; One pair of center protection wheels (57) is symmetrically installed on one side below the center wheel frame (58) through their respective wheel axles, and the other pair of center protection wheels (57) is symmetrically installed on the other side below the center wheel frame (58) through their respective wheel axles.

4. The photovoltaic panel multi-dirt automatic cleaning device according to claim 1, characterized in that: The cleaning mechanism (4) further comprises a liquid storage shell (42); The liquid storage shells (42) are all columnar and perpendicular to the guide rail (1), and the liquid storage shells (42) are arranged between the dust removal shell (31) and a plurality of cleaning rollers (41); Each of the cleaning rollers (41) is equipped with a corresponding roller motor; Cleaning liquid is stored in the liquid storage shell (42), and a plurality of openable and closable liquid outlets (43) are provided at the bottom of the liquid storage shell (42), and a openable and closable liquid filling port is also provided at the top of the liquid storage shell (42).

5. The photovoltaic panel multi-dirt automatic cleaning device according to claim 1, characterized in that: The negative pressure fan (32) is installed on a higher side of the dust removal housing (31), the dust removal housing (31) is provided with an air outlet on this side, and an openable and closable dust discharge port (35) is provided on the other side; In the dust removal housing (31), a filter screen (36) for filtering dust is also arranged at the front end of the negative pressure fan (32).

6. The photovoltaic panel multi-dirt automatic cleaning device according to claim 1, characterized in that: For multiple groups of photovoltaic battery panels (6) in the same row, the two guide rails (1) are extended so that the multiple groups of photovoltaic battery panels (6) in the same row are all located between the two guide rails (1).

7. A method for automatically cleaning a photovoltaic panel with multiple dirt, characterized in that: The photovoltaic panel automatic cleaning device for contaminants as claimed in any one of claims 1 to 6 is used, and the direct current generated by the photovoltaic panel (6) through the electric wire is connected to the photovoltaic panel as the working power supply of the photovoltaic panel automatic cleaning device for contaminants.

8. The method for automatically cleaning a photovoltaic panel with a lot of dirt according to claim 7, characterized in that: The photovoltaic panel multi-dirt automatic cleaning device also includes a central control module and a wireless module. When in operation, the photovoltaic panel (6) is automatically cleaned based on a preset program configured in the central control module, or a staff member performs remote control through a remote control device in conjunction with the wireless module to complete the cleaning of the photovoltaic panel (6).

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