Photovoltaic system

Abstract

The application discloses a photovoltaic system, which comprises a photovoltaic support, a photovoltaic panel, a stain detection assembly, a cleaning assembly and a controller, wherein the photovoltaic panel is arranged on the photovoltaic support; the stain detection assembly comprises a light source generator and a light signal receiver which are arranged on the photovoltaic support and located at opposite sides of the photovoltaic panel respectively, the light source generator is used for generating a light beam which propagates along the surface of the photovoltaic panel, and the light signal receiver is used for receiving the light beam; the cleaning assembly comprises a rolling brush and a wiping piece which are movably arranged on the photovoltaic support respectively, and the wiping piece is used for reciprocating wiping at a preset position of the photovoltaic panel; the controller is electrically connected with the light signal receiver, the rolling brush and the wiping piece respectively, the controller is used for judging the stain condition of the surface of the photovoltaic panel according to the signal transmitted by the light signal receiver, and selectively controlling the rolling brush or the wiping piece to clean the surface of the photovoltaic panel based on the judgment result. The technical scheme of the application can completely remove stubborn stains on the photovoltaic panel.

Description

Technical Field

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

[0002] Photovoltaic panels are the core equipment for converting solar energy into electricity and are widely used in solar power generation systems. To ensure efficient power generation, the surface of photovoltaic panels must be kept clean. Dust, stains, or other obstructions on the surface of the panels can obstruct effective sunlight, significantly reducing the efficiency of photoelectric conversion. Especially in outdoor environments, where photovoltaic panels are exposed to air for long periods of time, they are prone to accumulation of contaminants such as dust and bird droppings. This contaminant not only reduces power generation performance but can also accelerate equipment aging. Therefore, regular and effective cleaning of the panel surface is essential to ensure the long-term and efficient operation of photovoltaic systems.

[0003] Currently, photovoltaic panel cleaning technology typically uses a combination of water washing and a roller brush. While this method effectively removes general dust and minor stains, it often lacks effectiveness against stubborn stains like bird droppings. Even after roller brush cleaning, these stubborn stains may remain on the panel surface, continuously impacting the panel's power generation efficiency. Therefore, existing cleaning technologies are unable to completely remove stubborn stains, and improvements are urgently needed to enhance cleaning effectiveness and system performance. Summary of the Invention

[0004] The main purpose of the present invention is to provide a photovoltaic system, which aims to solve the technical problem that existing cleaning technologies cannot completely remove stubborn stains on photovoltaic panels.

[0005] To achieve the above-mentioned purpose, the photovoltaic system proposed in the present invention includes a photovoltaic bracket, a photovoltaic panel, a stain detection component, a cleaning component and a controller;

[0006] The photovoltaic panel is arranged on the photovoltaic bracket;

[0007] The stain detection assembly includes a light source generator and a light signal receiver respectively provided on the photovoltaic support and located on opposite sides of the photovoltaic panel, the light source generator is used to generate a light beam propagating along the surface of the photovoltaic panel, and the light signal receiver is used to receive the light beam;

[0008] The cleaning assembly comprises a rolling brush and a wiping member movably provided on the photovoltaic support, and the wiping member is used for reciprocating wiping at a preset position of the photovoltaic panel;

[0009] The controller is electrically connected to the optical signal receiver, the roller brush and the wiping member respectively. The controller is used to judge the stain condition of the photovoltaic panel surface according to the signal transmitted by the optical signal receiver, and selectively control the roller brush or the wiping member to clean the photovoltaic panel surface based on the judgment result.

[0010] Optionally, the photovoltaic bracket includes a support frame, a first strip frame and a second strip frame, and the photovoltaic panel is installed on the support frame;

[0011] The first strip frame and the second strip frame extend in parallel and are respectively arranged on two opposite sides of the support frame;

[0012] The light source generator is provided on the first strip frame, the light source generator extends in the length direction of the first strip frame, and the light emitting area of ​​the light source illuminator covers the entire support frame;

[0013] The optical signal receiver is arranged on the second bar-shaped frame, and the optical signal receiver extends in the length direction of the second bar-shaped frame. The receiving area of ​​the optical signal receiver covers the entire supporting frame.

[0014] Optionally, the light source generator includes a plurality of light emitting units spaced apart along the length direction of the first strip frame, and each of the light emitting units can be independently controlled to be turned on or off;

[0015] The optical signal receiver includes a plurality of receiving units spaced apart along a length direction of the second bar-shaped frame, and the plurality of receiving units correspond one-to-one to the plurality of light-emitting units.

[0016] The controller is electrically connected to each of the receiving units.

[0017] Optionally, the support frame has a length direction and a width direction;

[0018] The rotating shaft of the rolling brush member is parallel to the length direction of the support frame, and the cleaning assembly includes a first walking member provided at one extending end of the rolling brush member, and a second walking member provided at the other extending end of the rolling brush member, the first walking member and the second walking member can respectively abut against two opposite side edges of the support frame, and can move in the width direction of the support frame to drive the rolling brush member to move and clean the surface of the photovoltaic panel;

[0019] The light source generator is arranged on a side of the first moving member facing away from the second moving member, and the optical signal receiver is arranged on a side of the second moving member facing away from the first moving member.

[0020] Optionally, the cleaning assembly includes an upper strip frame and a lower strip frame, two ends of the upper strip frame are respectively fixed to the first walking member and the second walking member, and the lower strip frame is respectively fixed to the first walking member and the second walking member;

[0021] The upper strip frame, the roller brush member and the lower strip frame are arranged at intervals in the width direction of the support frame;

[0022] The wiping member includes a plurality of wiping heads, at least one of which is rotatably disposed on the upper strip frame and located on a side of the upper strip frame close to the support frame, and at least one of which is rotatably disposed on the lower strip frame and located on a side of the lower strip frame close to the support frame.

[0023] Optionally, an upper water inlet channel is formed on the upper strip frame, and a plurality of upper water spray holes are provided on the upper strip frame respectively connected to the upper water inlet channel, and the plurality of upper water spray holes are arranged at intervals in the length direction of the upper strip frame;

[0024] A lower water inlet channel is formed in the lower strip frame, and a plurality of lower water spray holes respectively connected with the lower water inlet channel are provided on the lower strip frame. The plurality of lower water spray holes are arranged at intervals in the length direction of the lower strip frame.

[0025] Optionally, the first walking member includes a first shell and a first driving motor disposed in the first shell, and one of the output shaft of the first driving motor and the end of the rolling brush member passes through the first shell and is connected to the other.

[0026] Optionally, a rotatable abutment wheel is provided on the side wall of the first shell close to the support frame, the rotating shaft of the abutment wheel extends in the thickness direction of the support frame, and the first shell abuts against the side edge of the support frame through the peripheral wall of the abutment wheel.

[0027] Optionally, a rotatable walking wheel is provided on the side wall of the first shell close to the second walking member, the rotating shaft of the walking wheel is parallel to the rotating shaft of the roller brush member, the rotating shaft of the walking wheel is transmission-connected to the output shaft of the first drive motor, and the outer peripheral wall of the walking wheel is connected to the surface of the photovoltaic panel.

[0028] The photovoltaic system of the present invention uses a light source generator and an optical signal receiver to generate and receive a light beam that propagates along the surface of the photovoltaic panel, thereby detecting the surface cleanliness of the panel. If the optical signal receiver fails to receive the light beam, indicating that stubborn stains (such as bird droppings) are blocking the light, the system automatically activates the wiper to perform targeted cleaning of that area. If the light beam propagation is unobstructed, indicating that the surface stains are light or absent, the controller triggers the roller brush to perform a regular, comprehensive cleaning. This combination of intelligent detection and selective cleaning allows the system to flexibly select the appropriate cleaning tool based on the type of stain, ensuring efficient and precise cleaning while avoiding the accumulation of stubborn stains and unnecessary repeated cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0030] Figure 1 This is a schematic structural diagram of an embodiment of a photovoltaic system of the present invention;

[0031] Figure 2 for Figure 1 A structural diagram from another perspective;

[0032] Figure 3 for Figure 1 A partial enlarged view of point A in the middle;

[0033] Figure 4 for Figure 3 Schematic diagram after omitting some structures;

[0034] Figure 5 for Figure 1 A partial enlarged view of point B in the middle;

[0035] Figure 6 for Figure 5 Schematic diagram after omitting some structures.

[0036] Description of Figure Numbers:

[0037] 1. Photovoltaic bracket; 11. Support frame; 12. First strip frame; 13. Second strip frame; 2. Photovoltaic panel; 3. Stain detection component; 31. Light source generator; 311. Light-emitting unit; 32. Optical signal receiver; 321. Receiving unit; 4. Cleaning component; 41. Rolling brush; 42. Wiping member; 421. Wiping head; 43. First moving member; 431. First shell; 432. First drive motor; 433. Abutment wheel; 434. Moving wheel; 44. Second moving member; 45. Upper strip frame; 451. Upper water inlet channel; 452. Upper water spray hole; 46. Lower strip frame; 461. Lower water inlet channel.

[0038] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0040] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), such directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0041] In addition, the descriptions of "first", "second", etc. in the present invention are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, "and / or" in the full text includes three solutions. Taking A and / or B as an example, it includes technical solution A, technical solution B, and technical solution that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, and must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0042] The present invention provides a photovoltaic system.

[0043] In the embodiment of the present invention, Figures 1 to 6As shown, the photovoltaic system includes a photovoltaic bracket 1, a photovoltaic panel 2, a stain detection component 3, a cleaning component 4 and a controller (not shown);

[0044] The photovoltaic panel 2 is arranged on the photovoltaic bracket 1;

[0045] The stain detection component 3 includes a light source generator 31 and a light signal receiver 32, which are respectively provided on the photovoltaic bracket 1 and located on opposite sides of the photovoltaic panel 2. The light source generator 31 is used to generate a light beam propagating along the surface of the photovoltaic panel 2, and the light signal receiver 32 is used to receive the light beam.

[0046] The cleaning assembly 4 includes a rolling brush 41 and a wiping member 42 movably provided on the photovoltaic support 1 , and the wiping member 42 is used for reciprocating wiping at a preset position of the photovoltaic panel 2 ;

[0047] The controller is electrically connected to the optical signal receiver 32, the roller brush 41 and the wiping member 42 respectively. The controller is used to judge the stain condition of the surface of the photovoltaic panel 2 according to the signal transmitted by the optical signal receiver 32, and selectively control the roller brush 41 or the wiping member 42 to clean the surface of the photovoltaic panel 2 based on the judgment result.

[0048] It should be noted that the expression "a light beam propagating along the surface of the photovoltaic panel 2" refers to the light beam emitted by the light source generator 31 propagating parallel or nearly parallel to the surface of the photovoltaic panel 2, rather than perpendicular to the surface of the photovoltaic panel 2. This means that the light beam propagates horizontally or vertically along the entire surface area of ​​the photovoltaic panel 2, and is used to detect whether there are any obstructions (such as dust or stains) on the surface of the photovoltaic panel 2. The rolling brush 41 and the wiping member 42 can be driven to move or rotate by a motor system.

[0049] Specifically, the photovoltaic support 1 is a structure used to support the photovoltaic panel 2. It can take the form of a frame structure, a fixed bracket, or an adjustable support system. The photovoltaic panel 2 is a component that converts solar energy into electrical energy and is composed of multiple photovoltaic panels. The stain detection assembly 3 includes a light source generator 31 and a light signal receiver 32. The light source generator 31 can be a device that generates a light beam, such as a laser generator or LED light source, while the light signal receiver 32 can be a device that receives and detects a light beam, such as a photodiode or a light sensor. The cleaning assembly 4 includes a roller brush 41 and a wiper 42. The roller brush 41 is a rotating brush that can be made of bristles, sponge, or other cleaning materials. The wiper 42 is used to wipe the surface and can be made of fabric, a rubber scraper, or other high-friction material. The controller receives sensor signals and controls the operation of the cleaning assembly 4. It can be a single-chip microcomputer, a PLC (programmable logic controller), or other microcontroller system.

[0050] In this embodiment, the controller determines whether there is any dirt on the surface of the photovoltaic panel 2 by analyzing the signal transmitted by the optical signal receiver 32 (for example, whether the detected light beam is blocked). If the signal indicates that the light beam is blocked, the controller will assume that there is stubborn dirt and trigger the wiper 42 to clean the corresponding location. If the signal is transmitted normally, it means that the surface is relatively clean or only slightly soiled, and the controller will trigger the roller brush 41 to perform regular cleaning. This intelligent selection mechanism triggers different cleaning tools based on the changes in the state of the optical signal.

[0051] It is not difficult to understand that the photovoltaic system of the present invention generates and receives a light beam propagating along the surface of the photovoltaic panel 2 through the light source generator 31 and the light signal receiver 32, and detects the surface cleanliness condition of the photovoltaic panel 2. If the light signal receiver 32 does not receive the light beam, it indicates that stubborn stains (such as bird droppings) are blocking the light, and the system will automatically start the wiping member 42 to perform targeted cleaning on the area. If the propagation of the light beam is not blocked, it means that the surface stains are light or there are no stains. At this time, the controller triggers the roller brush member 41 to perform routine comprehensive cleaning. Through this combination of intelligent detection and selective cleaning, the system can flexibly select the appropriate cleaning tool according to different stain types, ensuring efficient and accurate cleaning, avoiding the residue of stubborn stains and unnecessary repeated cleaning.

[0052] Optionally, the photovoltaic bracket 1 includes a support frame 11, a first strip frame 12 and a second strip frame 13, and the photovoltaic panel 2 is installed on the support frame 11;

[0053] The first strip frame 12 and the second strip frame 13 extend in parallel and are respectively arranged on two opposite sides of the support frame 11;

[0054] The light source generator 31 is provided on the first strip frame 12, and the light source generator 31 extends in the length direction of the first strip frame 12, and the light emitting area of ​​the light source illuminator covers the entire support frame 11;

[0055] The optical signal receiver 32 is disposed on the second bar-shaped frame 13 . The optical signal receiver 32 extends in the length direction of the second bar-shaped frame 13 . The receiving area of ​​the optical signal receiver 32 covers the entire support frame 11 .

[0056] As will be appreciated, the light source generator 31 and optical signal receiver 32 are mounted on the opposing first and second strip frames 12, 13, covering the entire area of ​​the support frame 11. This design achieves comprehensive coverage of the surface of the photovoltaic panel 2, allowing the light beam to detect stains or obstructions anywhere on the panel 2, ensuring accurate and complete detection. Compared to solutions that do not employ this strip frame structure, this embodiment can more accurately detect the presence of stains on the surface of the photovoltaic panel 2 and make timely cleaning decisions, thereby improving detection comprehensiveness and cleaning efficiency.

[0057] Optionally, the light source generator 31 includes a plurality of light emitting units 311 spaced apart along the length direction of the first strip frame 12, and each of the light emitting units 311 can be independently controlled to be turned on or off;

[0058] The optical signal receiver 32 includes a plurality of receiving units 321 spaced apart along the length direction of the second bar-shaped frame 13 , and the plurality of receiving units 321 correspond one-to-one to the plurality of light-emitting units 311 .

[0059] The controller is electrically connected to each of the receiving units 321 .

[0060] Specifically, each light-emitting unit 311 can be an independently controlled light source, such as an LED or laser. These units are spaced apart along the length of the first bar frame 12 and can emit light beams individually or synchronously. The receiving units 321 are components of the optical signal receiver 32. They correspond one-to-one with the light-emitting units 311 and are capable of receiving the light beams emitted by the corresponding light-emitting unit 311. Each receiving unit 321 can also independently detect and transmit the received signal.

[0061] It can be understood that a fixed light beam propagation path is formed between each light-emitting unit 311 and the corresponding receiving unit 321, and the controller can monitor the status of each light beam. If a light beam encounters a stain blockage on the propagation path, the receiving unit 321 will detect the interruption of the light signal, and the controller will determine which specific path is blocked based on the feedback information. This sophisticated detection mechanism allows the system to clean only the area corresponding to the blocked light beam, without the need to indiscriminately clean the entire photovoltaic panel 2. For example, if the light beam on a specific path is blocked, the controller will trigger the wiping member 42 or roller brush member 41 at the corresponding position for local cleaning, without the need to clean the areas covered by other light beam paths. This not only improves the cleaning efficiency, but also saves energy and cleaning resources, and avoids excessive cleaning of the surface of the photovoltaic panel 2.

[0062] Optionally, the support frame 11 has a length direction and a width direction;

[0063] The rotating shaft of the rolling brush member 41 is parallel to the length direction of the support frame 11. The cleaning assembly includes a first walking member 43 provided at one extending end of the rolling brush member 41, and a second walking member 44 provided at the other extending end of the rolling brush member 41. The first walking member 43 and the second walking member 44 can respectively abut against two opposite side edges of the support frame 11 and can move in the width direction of the support frame 11 to drive the rolling brush member 41 to move and clean the surface of the photovoltaic panel 2.

[0064] The light source generator 31 is disposed on a side of the first moving member 43 facing away from the second moving member 44 , and the optical signal receiver 32 is disposed on a side of the second moving member 44 facing away from the first moving member 43 .

[0065] Specifically, the support frame 11 has a length direction and a width direction, and the rotating shaft of the roller brush member 41 is parallel to the length direction of the support frame 11. That is, the roller brush member 41 is arranged along the long side direction of the photovoltaic panel 2, and its rotation is to perform a rotary cleaning operation around an axis parallel to the long side of the photovoltaic panel 2. The two ends of the roller brush member 41 are respectively connected to the first running member 43 and the second running member 44. These running members are located on both sides of the roller brush member 41 and are used to support and push the roller brush member 41 to move in the width direction of the photovoltaic panel 2. The first running member 43 and the second running member 44 are in contact with the opposite side edges of the support frame 11 to ensure that the running members move along the width direction (transverse direction) of the photovoltaic panel 2, so as to drive the roller brush member 41 to cover the entire surface of the photovoltaic panel 2 for cleaning. The running members are connected to the support frame 11 through mechanical devices (such as slide rails and guide wheels) so that their movement in the width direction is smooth and precise.

[0066] It's easy to understand that by aligning the axis of rotation of the roller brush 41 with the length of the photovoltaic panel 2, the roller brush 41 extends in the direction of light beam propagation. This design has the beneficial effect of aligning the direction of the light beam emitted by the light source as the roller brush 41 cleans the surface of the photovoltaic panel 2, thereby preventing the roller brush 41 from blocking or interfering with the light beam during the cleaning process. This allows the system to monitor the cleanliness of the photovoltaic panel 2 in real time during light beam propagation, while simultaneously cleaning the surface of the panel 2 through the rotation of the roller brush 41.

[0067] Optionally, the cleaning assembly 4 includes an upper strip frame 45 and a lower strip frame 46, the two ends of the upper strip frame 45 are respectively fixed to the first walking member 43 and the second walking member 44, and the lower strip frame 46 is respectively fixed to the first walking member 43 and the second walking member 44;

[0068] The upper strip frame 45, the roller brush member 41 and the lower strip frame 46 are arranged at intervals in the width direction of the support frame 11;

[0069] The wiping member 42 includes a plurality of wiping heads 421, at least one of the wiping heads 421 is rotatably provided on the upper strip frame 45 and is located on a side of the upper strip frame 45 close to the support frame 11, and at least one of the wiping heads 421 is rotatably provided on the lower strip frame 46 and is located on a side of the lower strip frame 46 close to the support frame 11.

[0070] In this embodiment, the wiping head 421 can be a rotating cloth, sponge or rubber head, and its rotation is driven by a motor arranged on the corresponding strip frame.

[0071] It can be understood that the upper strip frame 45, the roller brush 41 and the lower strip frame 46 are arranged at intervals in the width direction, and the upper strip frame 45 and the lower strip frame 46 are respectively located on both sides of the roller brush 41, thereby achieving a more efficient multi-level cleaning effect. When the cleaning component 4 moves along the width direction of the photovoltaic panel 2, the front wiping head 421 first cleans the photovoltaic panel 2. If there are still stains on the photovoltaic panel 2 or the cleaning is not thorough, the rear wiping head 421 can wipe it again. In this way, there is no need to move the cleaning component 4 back and forth to ensure that the surface of the photovoltaic panel 2 is completely clean. Since the wiping heads 421 are respectively arranged on both sides of the roller brush 41, this design can complete multiple cleanings in a single movement, avoiding the situation where the roller brush 41 or the wiping member 42 needs to return to the starting point for repeated cleaning after cleaning, thereby improving cleaning efficiency.

[0072] Optionally, an upper water inlet channel 451 is formed on the upper strip frame 45, and a plurality of upper water spray holes 452 are provided on the upper strip frame 45 respectively connected to the upper water inlet channel 451, and the plurality of upper water spray holes 452 are arranged at intervals in the length direction of the upper strip frame 45;

[0073] A lower water inlet channel 461 is formed in the lower strip frame 46 , and a plurality of lower water spray holes are provided on the lower strip frame 46 , respectively connected to the lower water inlet channel 461 . The plurality of lower water spray holes are arranged at intervals in the length direction of the lower strip frame 46 .

[0074] By providing water inlet channels and spray holes in the upper and lower strips 45 and 46, respectively, the surface of the photovoltaic panel 2 can be sprayed with water from multiple angles during the cleaning process. The upper and lower spray holes 452 are spaced apart along the length of the connecting frame, allowing the water flow to cover the entire surface area of ​​the photovoltaic panel 2. As the cleaning assembly 4 moves, the upper and lower spray holes 452 can simultaneously spray water from different directions, effectively softening stubborn stains on the surface of the photovoltaic panel 2 and enabling the subsequent roller brush 41 and wiper 42 to complete the cleaning task more easily.

[0075] Optionally, the first walking member 43 includes a first shell 431 and a first driving motor 432 disposed in the first shell 431 , and one of the output shaft of the first driving motor 432 and the end of the roller brush member 41 passes through the first shell 431 to be connected to the other.

[0076] The installation of the drive motor ensures that the roller brush 41 can move in the width direction while rotating stably, thus maintaining a consistent cleaning effect when cleaning the surface of the photovoltaic panel 2. Compared with traditional designs driven by external transmission devices, this solution simplifies the drive structure by integrating the motor directly into the running element, reducing wear and energy loss between components, and further improving the cleaning efficiency and stability of the system.

[0077] Optionally, a rotatable abutment wheel 433 is provided on the side wall of the first shell 431 close to the support frame 11, and the rotating axis of the abutment wheel 433 extends in the thickness direction of the support frame 11. The first shell 431 abuts against the side edge of the support frame 11 through the peripheral wall of the abutment wheel 433.

[0078] Through the support and guidance of the abutment wheel 433, the walking member can move more smoothly along the width direction of the support frame 11 during the movement process, reducing the friction and resistance that may occur during the movement.

[0079] Optionally, a rotatable walking wheel 434 is provided on the side wall of the first shell 431 close to the second walking member 44, and the rotating shaft of the walking wheel 434 is parallel to the rotating shaft of the roller brush member 41. The rotating shaft of the walking wheel 434 is transmission-connected to the output shaft of the first drive motor 432, and the outer peripheral wall of the walking wheel 434 is connected to the surface of the photovoltaic panel 2.

[0080] The travel wheel 434 is designed to contact the surface of the photovoltaic panel 2 and is driven to rotate by the first drive motor 432, effectively propelling the cleaning assembly 4 across the surface of the photovoltaic panel 2. The rotation axis of the travel wheel 434 is parallel to the rotation axis of the roller brush 41, which means that the movement direction of the cleaning assembly 4 is consistent with the working direction of the roller brush 41, ensuring synchronization and coordination of the cleaning process. In addition, the travel wheel 434 is driven by the drive motor, providing stable movement power for the cleaning assembly 4 during the cleaning process, ensuring that the cleaning operation covers the entire surface of the photovoltaic panel 2.

[0081] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention description and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A photovoltaic system, characterized in that: include: Photovoltaic support (1); A photovoltaic panel (2) is provided on the photovoltaic support (1); A stain detection assembly (3) comprising a light source generator (31) and a light signal receiver (32) respectively arranged on the photovoltaic support (1) and located on opposite sides of the photovoltaic panel (2), wherein the light source generator (31) is used to generate a light beam propagating along the surface of the photovoltaic panel (2), and the light signal receiver (32) is used to receive the light beam; A cleaning assembly (4) comprising a rolling brush (41) and a wiping member (42) movably disposed on the photovoltaic support (1), the wiping member (42) being used for reciprocating wiping at a preset position of the photovoltaic panel (2); a controller electrically connected to the optical signal receiver (32), the rolling brush member (41) and the wiping member (42), respectively, the controller being used to judge the stain condition of the surface of the photovoltaic panel (2) according to the signal transmitted by the optical signal receiver (32), and selectively controlling the rolling brush member (41) or the wiping member (42) to clean the surface of the photovoltaic panel (2) based on the judgment result; The photovoltaic support (1) comprises a support frame (11), a first strip frame (12) and a second strip frame (13), wherein the photovoltaic panel (2) is mounted on the support frame (11); the first strip frame (12) and the second strip frame (13) extend in parallel and are respectively arranged on two opposite sides of the support frame (11); the light source generator (31) is arranged on the first strip frame (12), the light source generator (31) extends in the length direction of the first strip frame (12), and the light emitting area of ​​the light source generator (31) covers the entire support frame (11); the optical signal receiver (32) is arranged on the second strip frame (13), the optical signal receiver (32) extends in the length direction of the second strip frame (13), and the receiving area of ​​the optical signal receiver (32) covers the entire support frame (11); The light source generator (31) comprises a plurality of light-emitting units (311) spaced apart along the length direction of the first strip frame (12), and each of the light-emitting units (311) can be independently controlled to be turned on or off; the optical signal receiver (32) comprises a plurality of receiving units (321) spaced apart along the length direction of the second strip frame (13), and the plurality of receiving units (321) correspond one-to-one to the plurality of light-emitting units (311); and the controller is electrically connected to each of the receiving units (321); The support frame (11) has a length direction and a width direction; the rotating shaft of the roller brush member (41) is parallel to the length direction of the support frame (11); the cleaning assembly (4) comprises a first walking member (43) provided at one extending end of the roller brush member (41), and a second walking member (44) provided at the other extending end of the roller brush member (41); the first walking member (43) and the second walking member (44) can respectively abut against two opposite side edges of the support frame (11) and can move in the width direction of the support frame (11) to drive the roller brush member (41) to move and clean the surface of the photovoltaic panel (2); the light source generator (31) is provided on a side of the first walking member (43) facing away from the second walking member (44); the optical signal receiver (32) is provided on a side of the second walking member (44) facing away from the first walking member (43); The cleaning assembly (4) comprises an upper strip frame (45) and a lower strip frame (46), the two ends of the upper strip frame (45) are respectively fixed on the first walking member (43) and the second walking member (44), and the lower strip frame (46) is respectively fixed on the first walking member (43) and the second walking member (44); the upper strip frame (45), the roller brush member (41) and the lower strip frame (46) are arranged at intervals in the width direction of the support frame (11); the wiping member (42) comprises a plurality of wiping heads (421), at least one of the wiping heads (421) is rotatably provided on the upper strip frame (45) and is located on a side of the upper strip frame (45) close to the support frame (11), and at least one of the wiping heads (421) is rotatably provided on the lower strip frame (46) and is located on a side of the lower strip frame (46) close to the support frame (11); An upper water inlet channel (451) is formed on the upper strip frame (45), and a plurality of upper water spray holes (452) are provided on the upper strip frame (45) and are respectively communicated with the upper water inlet channel (451). The plurality of upper water spray holes (452) are arranged at intervals in the length direction of the upper strip frame (45); a lower water inlet channel (461) is formed in the lower strip frame (46), and a plurality of lower water spray holes are provided on the lower strip frame (46) and are respectively communicated with the lower water inlet channel (461). The plurality of lower water spray holes are arranged at intervals in the length direction of the lower strip frame (46).

2. The photovoltaic system according to claim 1, characterized in that: The first walking member (43) includes a first housing (431) and a first driving motor (432) disposed in the first housing (431); an output shaft of the first driving motor (432) and an end portion of the rolling brush member (41) pass through the first housing (431) and are connected to the other.

3. The photovoltaic system according to claim 2, characterized in that: A rotatable abutment wheel (433) is provided on the side wall of the first shell (431) close to the support frame (11), and the rotating shaft of the abutment wheel (433) extends in the thickness direction of the support frame (11). The first shell (431) abuts against the side edge of the support frame (11) through the peripheral wall of the abutment wheel (433).

4. The photovoltaic system according to claim 2, characterized in that: A rotatable walking wheel (434) is provided on the side wall of the first housing (431) close to the second walking member (44); the rotating shaft of the walking wheel (434) is parallel to the rotating shaft of the rolling brush member (41); the rotating shaft of the walking wheel (434) is transmission-connected to the output shaft of the first drive motor (432); and the outer peripheral wall of the walking wheel (434) is in contact with the surface of the photovoltaic panel (2).

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