Photovoltaic system

Abstract

The invention discloses a photovoltaic system, which comprises a photovoltaic support, a photovoltaic panel, a stain detection assembly, a cleaning assembly and a controller, and is characterized in that 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 on the two opposite sides of the photovoltaic panel respectively, the light source generator is used for generating light beams propagating along the surface of the photovoltaic panel, and the light signal receiver is used for receiving the light beams; the cleaning assembly comprises a rolling brush piece and a wiping piece which are movably arranged on the photovoltaic support, and the wiping piece is used for wiping the preset position of the photovoltaic panel in a reciprocating mode. The controller is electrically connected with the optical signal receiver, the rolling brush piece and the wiping piece, and the controller is used for judging the stain condition of the surface of the photovoltaic panel according to the signal transmitted by the optical signal receiver and selectively controlling the rolling brush piece or the wiping piece to clean the surface of the photovoltaic panel based on the judgment result. According to the technical scheme, stubborn stains on the photovoltaic panel can be thoroughly removed.

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 core devices that convert solar energy into electrical energy and are widely used in solar power generation systems. To ensure the power generation efficiency of photovoltaic panels, their surfaces must be kept clean. Because if dust, stains or other obstructions are attached to the surface of photovoltaic panels, it will hinder the effective exposure of sunlight, resulting in a significant decrease in photoelectric conversion efficiency. Especially in outdoor environments, photovoltaic panels are exposed to the air for a long time, and dust, bird droppings and other dirt are easily accumulated. These dirt will not only reduce the power generation performance, but also accelerate the aging of the equipment. Therefore, regular and effective cleaning of the surface of photovoltaic panels is a necessary measure to ensure the long-term and efficient operation of photovoltaic systems.

[0003] At present, the cleaning technology of photovoltaic panels usually adopts the method of water washing combined with roller brush. Although this method can effectively remove general dust and minor stains, the cleaning effect is often not ideal for stubborn stains such as bird droppings. After roller brush cleaning, these stubborn stains may still remain on the surface of the photovoltaic panel, continuing to affect the power generation efficiency of the photovoltaic panel. In summary, the existing cleaning technology has the problem of being unable to completely remove stubborn stains, and it is urgent to improve on this basis to improve the cleaning effect and system performance. Summary of the invention

[0004] The main purpose of the present invention is to provide a photovoltaic system, aiming to solve the technical problem that the existing cleaning technology cannot completely remove the stubborn stains on the 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; The photovoltaic panel is arranged on the photovoltaic support; The stain detection assembly comprises a light source generator and a light signal receiver respectively arranged 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; The cleaning assembly comprises a rolling brush and a wiping member which are respectively movably arranged on the photovoltaic support, and the wiping member is used for reciprocating wiping at a preset position of the photovoltaic panel; The controller is electrically connected to the optical signal receiver, the rolling brush and the wiping member respectively, and 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 rolling brush or the wiping member to clean the photovoltaic panel surface based on the judgment result.

[0006] Optionally, the photovoltaic support comprises a support frame, a first strip frame and a second strip frame, and the photovoltaic panel is installed on the support frame; The first strip frame and the second strip frame extend in parallel and are respectively arranged on two opposite sides of the support frame; The light source generator is arranged 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 emitter covers the entire support frame; 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, and the receiving area of ​​the optical signal receiver covers the entire supporting frame.

[0007] 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; The optical signal receiver includes a plurality of receiving units arranged at intervals along the length direction of the second bar-shaped frame, and the plurality of receiving units correspond to the plurality of light-emitting units one by one.

[0008] The controller is electrically connected to each of the receiving units.

[0009] Optionally, the support frame has a length direction and a width direction; The rotating shaft of the roller brush 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 roller brush, and a second walking member provided at the other extending end of the roller brush, 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 roller brush to move and clean the surface of the photovoltaic panel; 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.

[0010] Optionally, the cleaning assembly comprises 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; The upper strip frame, the rolling brush member and the lower strip frame are arranged at intervals in the width direction of the support frame; 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.

[0011] Optionally, an upper water inlet channel is formed on the upper bar frame, and a plurality of upper water spray holes respectively connected to the upper water inlet channel are provided on the upper bar frame, and the plurality of upper water spray holes are arranged at intervals in the length direction of the upper bar frame; 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, and the plurality of lower water spray holes are arranged at intervals in the length direction of the lower strip frame.

[0012] Optionally, the first walking member includes a first shell and a first driving motor disposed in the first shell, and one of an output shaft of the first driving motor and an end of the rolling brush member passes through the first shell and is connected to the other.

[0013] 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.

[0014] 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 drivingly connected to the output shaft of the first driving motor, and the outer peripheral wall of the walking wheel is connected to the surface of the photovoltaic panel.

[0015] The photovoltaic system of the present invention generates and receives a light beam propagating along the surface of the photovoltaic panel through a light source generator and a light signal receiver to detect the surface cleanliness of the photovoltaic panel. If the light signal receiver 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 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 to perform conventional comprehensive cleaning. Through this combination of intelligent detection and selective cleaning, the system can flexibly select appropriate cleaning tools according to different stain types, ensure efficient and accurate cleaning, and avoid the residue of stubborn stains and unnecessary repeated cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 creative work.

[0017] Figure 1 It is a structural schematic diagram of an embodiment of a photovoltaic system of the present invention; Figure 2 for Figure 1 A structural diagram from another perspective; Figure 3 for Figure 1 A partial enlarged view of the middle A; Figure 4 for Figure 3 Schematic diagram after omitting some structures; Figure 5 for Figure 1 A partial enlarged view of point B in the middle; Figure 6 for Figure 5 Schematic diagram after some structures are omitted.

[0018] Description of Figure Numbers: 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. Roller brush; 42. Wiping component; 421. Wiping head; 43. First walking component; 431. First shell; 432. First driving motor; 433. Abutment wheel; 434. Walking wheel; 44. Second walking component; 45. Upper strip frame; 451. Upper water inlet channel; 452. Upper water spray hole; 46. Lower strip frame; 461. Lower water inlet channel.

[0019] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0022] In addition, the descriptions of "first", "second", etc. in the present invention are only used 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, which must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0023] The present invention provides a photovoltaic system.

[0024] In the embodiment of the present invention, Figures 1 to 6 As shown, the photovoltaic system includes a photovoltaic support 1, a photovoltaic panel 2, a stain detection component 3, a cleaning component 4 and a controller (not shown); The photovoltaic panel 2 is arranged on the photovoltaic bracket 1; The stain detection component 3 includes a light source generator 31 and a light signal receiver 32 respectively arranged on the photovoltaic bracket 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; The cleaning assembly 4 comprises a rolling brush 41 and a wiping member 42 which are movably arranged on the photovoltaic support 1, respectively, and the wiping member 42 is used for reciprocating wiping at a preset position of the photovoltaic panel 2; The controller is electrically connected to the optical signal receiver 32, the roller brush 41 and the wiping member 42 respectively, and is used to judge the stain condition on 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.

[0025] It should be noted that the expression "light beam propagating along the surface of the photovoltaic panel 2" means that the light beam emitted by the light source generator 31 propagates 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 is an obstruction (such as dust or stains) on the surface of the photovoltaic panel 2. The rolling brush member 41 and the wiping member 42 can be driven to move or rotate by the motor system respectively.

[0026] Specifically, the photovoltaic support 1 is a structure for supporting the photovoltaic panel 2, which can be in the form of a frame structure, a fixed support or an adjustable angle support system. The photovoltaic panel 2 refers to a component that converts solar energy into electrical energy, which is composed of a plurality of photovoltaic panels. The stain detection component 3 includes a light source generator 31 and a light signal receiver 32. The light source generator 31 can be a device that can generate a light beam, such as a laser generator, an LED light source, etc., and the light signal receiver 32 can be a device that can receive and detect a light beam, such as a photodiode, a light sensor, etc. The cleaning component 4 includes a roller brush 41 and a wiper 42. The roller brush 41 is a brush that can rotate and can be composed of bristles, sponges or other cleaning materials; the wiper 42 is used to wipe the surface and can be a fabric material, a rubber scraper or a material with high friction. The controller is a device for receiving a sensor signal and controlling the action of the cleaning component 4, which can be a single-chip microcomputer, a PLC (programmable logic controller) or other microcontroller systems.

[0027] In this embodiment, the controller determines whether there is stain 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 shows that the light beam is blocked, the controller will consider that there is stubborn stain and trigger the wiping member 42 to clean at the corresponding position; if the signal is transmitted normally, it means that the surface is relatively clean or only slightly stained, and the controller will trigger the rolling brush member 41 to perform regular cleaning. This intelligent selection mechanism triggers different cleaning tools by the state change of the light signal.

[0028] 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 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 conventional comprehensive cleaning. Through this combination of intelligent detection and selective cleaning, the system can flexibly select suitable cleaning tools according to different types of stains, ensure efficient and accurate cleaning, and avoid the residue of stubborn stains and unnecessary repeated cleaning.

[0029] 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; 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 disposed 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 emitter covers the entire support frame 11; 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 .

[0030] It can be understood that the light source generator 31 and the light signal receiver 32 are installed on the first and second strip frames 12 and 13 relative to each other, and cover the entire support frame 11 area. This design achieves full coverage of the surface of the photovoltaic panel 2, so that the light beam can detect stains or obstructions on any part of the photovoltaic panel 2, ensuring the accuracy and integrity of the detection. Compared with the solution that does not adopt this strip frame structure, this embodiment can more accurately detect whether there are stains on the surface of the photovoltaic panel 2, and make cleaning judgments in a timely manner, thereby improving the comprehensiveness of the detection and the cleaning efficiency.

[0031] 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; 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 .

[0032] The controller is electrically connected to each of the receiving units 321 .

[0033] Specifically, each light emitting unit 311 may be an independently controlled light source, such as an LED, a laser, etc., which are arranged at intervals along the length direction of the first strip frame 12, and can emit light beams individually or synchronously. The receiving unit 321 refers to a component of the optical signal receiver 32, which corresponds to the light emitting unit 311 one by one, and can receive the light beam emitted from the corresponding light emitting unit 311, and each receiving unit 321 can also independently detect and transmit the received signal.

[0034] 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 obstruction 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 a light beam on a specific path is blocked, the controller will trigger the wiping member 42 or the roller brush member 41 at the corresponding position for local cleaning without cleaning 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.

[0035] Optionally, 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, and the cleaning assembly includes 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 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 .

[0036] 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 to say, the roller brush member 41 is arranged along the long side direction of the photovoltaic panel 2, and its rotation is to perform a rotating 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 walking member 43 and the second walking member 44, which 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 walking member 43 and the second walking member 44 are in contact with the opposite side edges of the support frame 11 to ensure that the walking member moves along the width direction (laterally) of the photovoltaic panel 2 to drive the roller brush member 41 to cover the entire surface of the photovoltaic panel 2 for cleaning. The walking member is connected to the support frame 11 through a mechanical device (such as a slide rail, a guide wheel) so that its movement in the width direction is smooth and accurate.

[0037] It is not difficult to understand that the rotation axis of the roller brush 41 is parallel to the length direction of the photovoltaic panel 2, that is, the roller brush 41 extends along the propagation direction of the light beam. The beneficial effect of this design is that when the roller brush 41 cleans the surface of the photovoltaic panel 2, its extension direction is consistent with the propagation direction of the light beam emitted by the light source, thereby avoiding the roller brush 41 blocking and interfering with the light beam during the cleaning process. In this way, the system can detect the cleaning status of the photovoltaic panel 2 in real time during the propagation of the light beam, and at the same time clean the surface of the photovoltaic panel 2 through the rotation of the roller brush 41.

[0038] Optionally, the cleaning assembly 4 includes an upper strip frame 45 and a lower strip frame 46, 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; 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 includes a plurality of wiping heads 421, at least one of the wiping heads 421 is rotatably disposed 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 disposed on the lower strip frame 46 and is located on a side of the lower strip frame 46 close to the support frame 11.

[0039] In this embodiment, the wiping head 421 can be a rotating cloth piece, a sponge or a rubber head, and its rotation is driven by a motor arranged on a corresponding strip frame.

[0040] 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, so as to achieve 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, so that the surface of the photovoltaic panel 2 can be ensured to be completely clean without moving the cleaning component 4 back and forth. Since the wiping heads 421 are respectively arranged on both sides of the roller brush 41, such a 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 the cleaning efficiency.

[0041] 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; A lower water inlet channel 461 is formed in the lower strip frame 46 , and a plurality of lower water spray holes respectively connected to the lower water inlet channel 461 are provided on the lower strip frame 46 . The plurality of lower water spray holes are arranged at intervals in the length direction of the lower strip frame 46 .

[0042] By respectively providing a water inlet channel and a water spray hole in the upper strip frame 45 and the lower strip frame 46, it is possible to spray water at multiple angles on the surface of the photovoltaic panel 2 during the cleaning process. The upper water spray hole 452 and the lower water spray hole are arranged at intervals along the length direction of the connecting frame, and such a design enables the water flow to cover the entire surface area of ​​the photovoltaic panel 2. During the movement of the cleaning component 4, the upper water spray hole 452 and the lower water spray hole can spray water from different directions at the same time, effectively softening the stubborn stains on the surface of the photovoltaic panel 2, so that the subsequent rolling brush 41 and wiping member 42 can complete the cleaning work more easily.

[0043] 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 rolling brush member 41 passes through the first shell 431 to be connected to the other.

[0044] The installation of the drive motor ensures that the roller brush 41 can rotate stably while moving in the width direction, thereby maintaining a consistent cleaning effect when cleaning the surface of the photovoltaic panel 2. Compared with the traditional design driven by an external transmission device, this solution simplifies the drive structure by directly integrating the motor into the walking part, reduces wear and energy loss between components, and further improves the cleaning efficiency and stability of the system.

[0045] 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.

[0046] 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, reducing the friction and resistance that may occur during the movement.

[0047] Optionally, a rotatable walking wheel 434 is provided on the side wall of the first shell 431 close to the second walking member 44, 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 driving motor 432, and the outer peripheral wall of the walking wheel 434 is connected to the surface of the photovoltaic panel 2.

[0048] The walking wheel 434 is designed to contact the surface of the photovoltaic panel 2, and the first drive motor 432 is used to drive the walking wheel 434 to rotate, which can effectively push the cleaning component 4 to move on the surface of the photovoltaic panel 2. The rotating shaft of the walking wheel 434 is parallel to the rotating shaft of the roller brush member 41, which means that the movement direction of the cleaning component 4 is consistent with the working direction of the roller brush member 41, ensuring the synchronization and coordination of the cleaning process. In addition, the walking wheel 434 is driven by the drive motor, which can provide stable moving power for the cleaning component 4 during the cleaning process, so that the cleaning operation covers the entire surface of the photovoltaic panel 2.

[0049] 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 changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied 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 arranged on the photovoltaic support (1); A stain detection component (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 member (41) and a wiping member (42) which are respectively movably arranged on the photovoltaic support (1), wherein the wiping member (42) is used for reciprocating wiping at a preset position of the photovoltaic panel (2); A controller is electrically connected to the optical signal receiver (32), the rolling brush member (41) and the wiping member (42), respectively, and 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 rolling brush member (41) or the wiping member (42) to clean the surface of the photovoltaic panel (2) based on the judgment result.

2. The photovoltaic system according to claim 1, characterized in that: The photovoltaic support (1) comprises a support frame (11), a first strip frame (12) and a second strip frame (13), and 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 illuminator 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).

3. The photovoltaic system according to claim 2, characterized in that: The light source generator (31) comprises a plurality of light emitting units (311) arranged at intervals 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) arranged at intervals 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). The controller is electrically connected to each of the receiving units (321).

4. The photovoltaic system according to claim 2, characterized in that: The support frame (11) has a length direction and a width direction; The rotating shaft of the rolling brush member (41) is parallel to the length direction of the support frame (11), and the cleaning assembly comprises 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); The light source generator (31) is arranged on a side of the first moving member (43) facing away from the second moving member (44), and the optical signal receiver (32) is arranged on a side of the second moving member (44) facing away from the first moving member (43).

5. The photovoltaic system according to claim 4, characterized in that: 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 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); The upper strip frame (45), the rolling 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) being rotatably disposed on the upper strip frame (45) and being 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) being rotatably disposed on the lower strip frame (46) and being located on a side of the lower strip frame (46) close to the support frame (11).

6. The photovoltaic system according to claim 5, characterized in that: 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); A lower water inlet channel (461) is formed in the lower strip frame (46), and a plurality of lower water spray holes respectively connected to the lower water inlet channel (461) are provided on the lower strip frame (46), and the plurality of lower water spray holes are arranged at intervals in the length direction of the lower strip frame (46).

7. The photovoltaic system according to claim 4, characterized in that: The first walking member (43) comprises 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 of the rolling brush member (41) pass through the first housing (431) and are connected to the other.

8. The photovoltaic system according to claim 7, 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); the rotation axis of the abutment wheel (433) extends in the thickness direction of the support frame (11); and the first shell (431) abuts against the side edge of the support frame (11) through the peripheral wall of the abutment wheel (433).

9. The photovoltaic system according to claim 7, 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 drivingly connected to the output shaft of the first driving 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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