A self-cleaning device for solar panels of a distributed photovoltaic power station

Abstract

The present invention relates to the technical field of photovoltaic power generation, and discloses a self-cleaning device for solar panels of a distributed photovoltaic power station, including: a support frame and a cleaning mechanism; the support frame is used to fix the solar panel, and the cleaning mechanism is arranged at the upper end of the support frame; the cleaning mechanism includes a protective housing, a cleaning brush, a traction component, a connecting component, a rinsing component and a water supply component; the protective housing is fixed at the upper end of the support frame, and the side facing the solar panel is an open structure. By setting the rinsing component, after the cleaning brush returns to the protective housing, the squeezing action is driven by the linkage of the conveyor belt, and the stains adsorbed on the cleaning part of the water-absorbing sponge are squeezed out and discharged through the drainage groove. By simulating the rinsing method of a real mop, the cleaning brush can be automatically rinsed, solving the problem of secondary pollution of residues.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic power generation, and more specifically, it relates to a self-cleaning device for solar panels of a distributed photovoltaic power station. Background Art

[0002] A distributed photovoltaic power station is a small-scale power generation system that utilizes decentralized resources and is usually deployed near the user side and connected to a power grid with a voltage level below 35 kV. This system directly converts solar energy into electrical energy through photovoltaic modules and is widely used in scenarios such as building rooftops and needs to supply power in coordination with the public power grid. Since solar panels are exposed to the outdoor environment for a long time, dust and pollutants accumulated on the surface will significantly reduce the photoelectric conversion efficiency. Therefore, regular cleaning and maintenance are required to ensure the power generation performance.

[0003] Currently, most mainstream cleaning devices use mechanical scraping methods. For example, in the prior art, the publication number is CN117978071A, which discloses a self-cleaning device for solar panels of a distributed photovoltaic power station. It scrapes and cleans the surface of the solar panel through a cleaning brush driven by wind power. Although it reduces energy consumption, there are obvious defects: after the cleaning brush directly contacts the panel surface, it adsorbs and residues pollutants, resulting in secondary pollution during subsequent cleaning; and it is difficult to effectively remove stubborn adsorbed substances on the panel surface (such as adhered dust, bird droppings, etc.) only by dry scraping, and the cleaning effect is limited. Therefore, it is urgent to design a photovoltaic panel cleaning device with both self-cleaning function and high cleaning ability to solve the problems of residual pollution and incomplete cleaning. Summary of the Invention

[0004] The purpose of the present invention is to provide a self-cleaning device for solar panels of a distributed photovoltaic power station to solve the above-mentioned technical problems.

[0005] The present invention solves the above-mentioned existing technical problems through the following technical solutions:

[0006] The present invention provides a self-cleaning device for solar panels of a distributed photovoltaic power station, including: a support frame and a cleaning mechanism;

[0007] The support frame is used to fix the solar panel, and the cleaning mechanism is arranged at the upper end of the support frame;

[0008] The cleaning mechanism includes a protective housing, a cleaning brush, a traction component, a connecting component, a rinsing component, and a water supply component;

[0009] The protective housing is fixed at the upper end of the support frame, and the side facing the solar panel is an open structure;

[0010] The cleaning brush is connected to the traction component through the connecting component, and the traction component drives the cleaning brush to move between the rinsing area of the protective housing and the top surface of the solar panel;

[0011] The rinsing component is arranged inside the protective housing and is used for squeezing and cleaning the cleaning brush that returns to the rinsing area;

[0012] The water supply component is communicated with the clean water storage area of the protective housing and is used for supplementing the cleaning water.

[0013] Preferably, the traction component includes a traction motor, upper and lower rotating shafts arranged in parallel, belt pulleys and a transmission belt; the traction motor drives the upper rotating shaft and realizes linkage with the lower rotating shaft through the belt pulleys and the transmission belt;

[0014] The connecting component includes a connecting plate detachably connected to the transmission belt and a sliding shaft, and the sliding shaft is connected to the cleaning brush through a limiting guide groove.

[0015] Preferably, the connecting component further includes a fixing member, and the fixing member includes a movable clamping member and a return spring; the movable clamping member is elastically connected to the connecting plate through the return spring, and a clamping groove adapted to the movable clamping member is provided on the top surface of the transmission belt to realize automatic disconnection when the cleaning brush reaches the rinsing area.

[0016] Preferably, the rinsing component includes a pressing plate, a driving body and a cooperating connecting body; the driving body is connected to the transmission belt, and the cooperating connecting body drives the pressing plate to translate and lift through a movable guide groove for performing a water absorption and extrusion cyclic cleaning on the cleaning brush.

[0017] Preferably, a side of the pressing plate close to the cleaning brush is provided with uniformly distributed pressing protrusions, and a drainage groove is provided at the bottom of the rinsing area.

[0018] Preferably, the water supply component includes a water storage tank, a water level monitoring member and a water supply pump; the water level monitoring member monitors the water level in the clean water storage area in real time, and the water supply pump automatically supplements clean water according to the water level signal.

[0019] Preferably, a drainage groove and a water collecting groove opening are provided on the top surface of the protective housing, and the water collecting groove opening is communicated with the clean water storage area.

[0020] Preferably, the cleaning brush includes a rigid support part and a water absorption sponge cleaning part, and its length matches the transverse dimension of the solar panel.

[0021] Preferably, a support spring is provided inside the protective housing for providing a reset elastic force to the pressing plate.

[0022] Preferably, when multiple solar panels are arranged side by side, the traction components of each cleaning mechanism are synchronously driven through a linkage structure and share the same water supply component.

[0023] The beneficial effects of the present invention are as follows:

[0024] By providing a rinsing component, after the cleaning brush returns to the protective housing, a squeezing action is driven through linkage by a transmission belt to squeeze out the stains adsorbed on the water-absorbing sponge cleaning part and discharge them through a drainage groove. By simulating the rinsing method of a real mop, the cleaning brush can be automatically rinsed, solving the problem of secondary pollution by residues. At the same time, the combination of the wet state of the cleaning brush and the reciprocating scraping driven by the traction component, through the synergistic effect of water immersion softening and mechanical friction, effectively peels off stubbornly adsorbed substances. The storage design of the protective housing and the rainwater recycling function of the water supply component further ensure the environmental durability and cleaning continuity of the cleaning brush, achieving a dual optimization of efficient self-cleaning and extended equipment life. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 FIG. is a schematic structural diagram of a self-cleaning device for solar panels of a distributed photovoltaic power station provided by the present invention;

[0026] Figure 2 FIG. is a schematic structural diagram of a cleaning mechanism in a self-cleaning device for solar panels of a distributed photovoltaic power station provided by the present invention;

[0027] Figure 3 FIG. is a schematic structural diagram between a support frame and a traction component in a self-cleaning device for solar panels of a distributed photovoltaic power station provided by the present invention;

[0028] Figure 4 FIG. is a schematic structural diagram of a traction component in a self-cleaning device for solar panels of a distributed photovoltaic power station provided by the present invention;

[0029] Figure 5 FIG. is a schematic structural diagram between a connecting component, a transmission belt and a protective housing in a self-cleaning device for solar panels of a distributed photovoltaic power station provided by the present invention;

[0030] Figure 6 FIG. is a schematic structural diagram between a connecting component, a transmission belt and a cleaning brush in a self-cleaning device for solar panels of a distributed photovoltaic power station provided by the present invention;

[0031] Figure 7 FIG. is a sectional view of a partial position of a connecting component in a self-cleaning device for solar panels of a distributed photovoltaic power station provided by the present invention;

[0032] Figure 8 FIG. is a schematic structural diagram of a rinsing component in a self-cleaning device for solar panels of a distributed photovoltaic power station provided by the present invention;

[0033] Figure 9 FIG. is a schematic structural diagram of a partial position between a rinsing component and a protective housing in a self-cleaning device for solar panels of a distributed photovoltaic power station provided by the present invention;

[0034] Figure 10It is a schematic structural diagram of a protective housing in a self-cleaning device for solar panels of a distributed photovoltaic power station provided by the present invention;

[0035] Figure 11 It is a schematic structural diagram between the protective housing and the water supply component in a self-cleaning device for solar panels of a distributed photovoltaic power station provided by the present invention;

[0036] Figure 12 It is a front schematic diagram of the second embodiment of a self-cleaning device for solar panels of a distributed photovoltaic power station provided by the present invention;

[0037] Figure 13 It is a back schematic diagram of the second embodiment of a self-cleaning device for solar panels of a distributed photovoltaic power station provided by the present invention.

[0038] In the figure: 1, support frame; 2, solar panel; 3, cleaning mechanism; 31, protective housing; 311, clean water storage area; 312, rinsing area; 32, cleaning brush; 33, traction component; 331, traction motor; 332, rotating shaft; 333, belt pulley; 334, transmission belt; 34, connecting component; 341, connecting plate; 342, movable plate; 343, contact block; 344, fixing part; 3441, movable clamping part; 3442, return spring; 3443, clamping groove; 345, limiting guide groove; 346, connecting spring; 347, sliding shaft; 35, rinsing component; 351, extrusion plate; 352, driving body; 353, mating connecting body; 354, supporting spring; 355, movable guide groove; 356, positioning groove body; 357, upward movement groove; 358, drainage groove; 359, extrusion protrusion; 3510, movable shaft; 36, water supply component; 361, water storage tank; 362, water level monitoring part; 363, water supply pump; 37, drainage groove; 38, water collection tank opening; 39, drain pipe. Detailed implementation manners

[0039] Now, the subject matter described herein will be discussed with reference to example embodiments. It should be understood that discussing these embodiments is only to enable those skilled in the art to better understand and thus implement the subject matter described herein. Without departing from the protection scope of the content of this specification, changes can be made to the functions and arrangements of the elements discussed. Each example can omit, substitute, or add various processes or components as needed. Additionally, the features described relative to some examples can also be combined in other examples.

[0040] Embodiment 1

[0041] Please refer to Figure 1 and Figure 2, a self-cleaning device for solar panels of a distributed photovoltaic power station, comprising: a support frame 1 and a cleaning mechanism 3. The support frame 1 is used to support the solar panel 2, and the cleaning mechanism 3 is connected to the upper end of the support frame 1 and is used to automatically clean the top surface of the solar panel 2. Among them, the cleaning mechanism 3 includes a protective housing 31, a cleaning brush 32, a traction component 33, a connecting component 34, a rinsing component 35 and a water supply component 36. The protective housing 31 is fixedly installed at the upper end of the support frame 1, and the side facing the upper end of the solar panel 2 is in an open state, enabling the cleaning brush 32 to move from inside the protective housing 31 to the top surface of the solar panel 2. The cleaning brush 32 is arranged in the rinsing area 312 and is used to scrape and clean the top surface of the solar panel 2. When not in use, the cleaning brush 32 retracts into the rinsing area 312, and the protective housing 31 protects it, avoiding long-term exposure to the external environment and preventing aging and damage. The cleaning brush 32 includes a support part and a cleaning part. The cleaning part is fixed to the bottom of the support part. The cleaning part is a water-absorbing material, which can be a water-absorbing sponge, and the support part is made of a material with greater hardness, such as stainless steel. The length of the cleaning brush 32 is adapted to the lateral length of the photovoltaic panel. The traction component 33 is connected to the cleaning brush 32 through the connecting component 34. The rinsing component 35 is arranged on the inner bottom wall of the protective housing 31, and it divides the inner bottom wall of the protective housing 31 into a clean water storage area 311 and a rinsing area 312. The rinsing component 35 is used to rinse the cleaning brush 32 after the cleaning operation. The water supply component 36 is connected to the clean water storage area 311 and is used to replenish clean water to the clean water storage area 311.

[0042] The usage process of the above self-cleaning device is as follows: When cleaning the top surface of the solar panel 2, the cleaning brush 32 is driven by the traction component 33 to move obliquely upward from the rinsing area 312 first. After the cleaning brush 32 reaches the opening position of the protective housing 31, its bottom is flush with the top surface of the solar panel 2, so that the cleaning brush 32 is in the posture to be cleaned. Then, the cleaning brush 32 is continuously driven by the traction component 33 to slide linearly along the top surface of the solar panel 2. Since the cleaning brush 32 is in a wet state, when its bottom contacts the top surface of the solar panel 2, the top surface can be washed and scraped simultaneously. By driving the cleaning brush 32 to slide linearly back and forth on the top surface of the solar panel 2 by the traction component 33, the top surface of the solar panel 2 can be comprehensively cleaned. And by the way of scraping and washing between the cleaning brush 32 and the solar panel 2, dust with smaller particles can be first sucked into the cleaning brush 32. For adsorbents with stronger adsorption force, through repeated washing and scraping friction, they are first softened and then separated from the top surface of the solar panel 2 under the scraping action of the cleaning brush 32. Therefore, compared with the traditional direct dry scraping method, the cleaning effect of the present invention is better and no secondary pollution will be caused. In addition, according to the actual cleaning requirements, the number of reciprocations of the single cleaning operation of the cleaning brush 32 on the top surface of the solar panel 2 can be set. For example, if it is set that the cleaning brush 32 needs to be rinsed after reciprocating twice, then after the cleaning brush 32 completes two reciprocating motions on both sides, the cleaning brush 32 is driven by the traction component 33 to return to the rinsing area 312 to start the rinsing operation on it.

[0043] When rinsing the cleaning brush, the traction component 33 moves to actively release its connection with the connecting component 34 and simultaneously establish a connection with the rinsing component 35. The rinsing component 35 is driven to move alone by the traction component 33, while the connecting component 34 and the rinsing component 35 no longer move. The traction component 33 first drives the rinsing component 35 to perform a translational motion to make it close to the cleaning brush 32, then performs an upward motion to make the clean water in the clean water storage area 311 enter the rinsing area 312 from the lower end of the rinsing component 35, and finally drives the rinsing component 35 to perform a translational motion to make the rinsing component 35 squeeze the cleaning brush 32 after sucking in clean water. For the squeezed cleaning brush 32, the adsorbed substances inside it are discharged out of the rinsing area 312 together with the sewage, so as to realize the automatic rinsing function of the cleaning brush 32, keep the cleaning brush 32 in a relatively clean state, and avoid causing secondary pollution to the top surface of the solar panel 2 during the next cleaning operation.

[0044] Specifically, please refer to Figure 3 and Figure 4In order to enable the cleaning brush 32 to move freely from the protective shell 31 to the top surface of the solar panel, the present invention provides a traction component 33 and a connecting component 34 for use together, specifically: the traction component 33 includes a traction motor 331 and two rotating shafts 332, the traction motor 331 is fixedly installed on the upper end of the support frame 1, and the two rotating shafts 332 are rotatably installed on the upper and lower ends of the support frame 1, and the two rotating shafts 332 remain parallel, the rotating end of the traction motor 331 is fixed to the end of the rotating shaft 332 located at the upper end of the support frame 1, and both ends of the two rotating shafts 332 are fixedly covered with a transmission pulley 333, and the two transmission pulleys 333 located on the same side and on the two rotating shafts 332 are connected by a transmission belt 334.

[0045] Please refer to Figures 5 to 7 There are two connecting parts 34, which are symmetrically arranged on both sides of the protective shell 31 and correspond to the two transmission belts 334 one by one. The connecting parts 34 include a connecting plate 341, a movable plate 342, a contact block 343, a fixing member 344 and two limiting guide grooves 345. The bottom end of the connecting plate 341 is detachably fixed to the top surface of the transmission belt 334 through the fixing member 344, and the movable plate 342 is slidably mounted on the outer side of the connecting plate 341. A connecting spring 346 is fixedly installed between the inner top wall of the movable plate 342 and the upper end of the movable plate 342. Two limiting guide grooves 345 are arranged on both sides corresponding to the protective shell 31 and the two connecting parts 34. Sliding shafts 347 are fixedly installed at both ends of the cleaning brush 32. After one end of the sliding shaft 347 slides through the limiting guide groove 345, it is fixedly connected to one side of the movable plate 342. The contact block 343 is fixedly installed on the top surface of the transmission belt 334, and one side of it is in contact with the connecting plate 341. When the cleaning brush 32 reaches the preset rinsing area 312 position, the fixing part 344 and the transmission belt 334 are in a separated state, and the rinsing part 35 is connected to the transmission belt 334.

[0046] When the traction component 33 drives the cleaning brush 32 to move, assuming that the cleaning brush 32 is in the rinsing area 312, at this time, the traction motor 331 rotates forwardly, which can drive the rotating shaft 332 connected thereto to rotate. Under the transmission action of the transmission pulley 333 and the transmission belt 334, the two rotating shafts 332 and the four transmission pulleys 333 can rotate synchronously, and finally the two transmission belts 334 can move synchronously, and the contact block 343 moves with the transmission belt 334, which can push the connecting plate 341 and the movable plate 342 to move together. At the same time, the sliding shaft 347 on one side of the movable plate 342 first slides in the upward movement section of the limiting guide groove 345, which can generate an upward force on the movable plate 342, so that the movable plate 342 can gradually move upward in the process of following the translation of the transmission belt 334, and at the same time, it is reset with the help of the connecting spring 346, which also generates an upward force on the movable plate 342. When the cleaning brush 32 reaches the lower end position of the top surface of the solar panel 2, the cleaning brush 32 can be driven to slide back to the top surface of the solar panel 2 by the reverse rotation of the traction motor 331.

[0047] The traction component 33 provided in the present invention is connected to the cleaning brush 32 through the connecting component 34, so that the cleaning brush 32 can move freely between the rinsing area 312 and the top surface of the solar panel 2. On the one hand, when cleaning is not performed, the cleaning brush 32 can be driven to the rinsing area 312 for storage, which is beneficial to avoid the cleaning brush 32 being directly exposed to the external environment and being easily damaged by aging. On the other hand, after the cleaning brush 32 is returned to the rinsing area 312, it is convenient for the rinsing component 35 to perform a rinsing operation on it. In addition, the connecting component 34 is set to be movable, not only to meet the upward movement requirements of the cleaning brush 32, but also when the cleaning brush 32 slides to clean the top surface of the solar panel 2, if it encounters an adsorbent with greater hardness, it can move upward through the movable plate 342, driving the cleaning brush 32 to move upward synchronously, so that the cleaning brush 32 can pass through the adsorbent smoothly, thereby avoiding the problem that the cleaning brush 32 is blocked by the adsorbent and difficult to move.

[0048] Please refer to Figure 7, in order to automatically disconnect the connection between the connecting component 34 and the traction component 33 after the cleaning brush 32 reaches the preset position in the rinsing area 312, the present invention designs a fixing component 344, specifically: the fixing component 344 includes a movable clamping component 3441, the movable clamping component 3441 is slidably installed at the bottom end of the connecting plate 341, a return spring 3442 is fixedly installed between the top end of the movable clamping component 3441 and the connecting plate 341, the top end of the movable clamping component 3441 is in contact with the bottom end of the movable plate 342, and a clamping groove 3443 adapted to the movable clamping component 3441 is provided on the top surface of the transmission belt 334. When the return spring 3442 is not compressed, the lower end of the movable clamping component 3441 is clamped in the clamping groove 3443.

[0049] During the process of the cleaning brush 32 returning from the opening of the protective housing 31 to the rinsing area 312, the sliding shaft 347 on one side of the movable plate 342 first slides along the translation section of the limit guide groove 345, and the movable plate 342 performs translational sliding. When the sliding shaft 347 on one side of the movable plate 342 slides into the upward movement section of the limit guide groove 345, the sliding shaft 347 receives a downward acting force, thereby driving the movable plate 342 to move downward and squeezing the connecting spring 346 to contract. When the sliding shaft 347 on one side of the movable plate 342 is about to slide to the end of the downward movement section of the limit guide groove 345, the movable plate 342 begins to contact the top end of the movable clamping component 3441 and squeezes the movable clamping component 3441 to move downward, which can separate the bottom end of the movable clamping component 3441 from the clamping groove 3443. When the sliding shaft 347 on one side of the movable plate 342 completely reaches the end of the downward movement section of the limit guide groove 345, it can drive the bottom end of the movable clamping component 3441 to be completely separated from the clamping groove 3443. At this time, the bottom end of the connecting plate 341 and the top surface of the transmission belt 334 are disconnected, and the traction component 33 is separated from the connecting component 34. When the traction component 33 moves the cleaning brush 32 to the outside of the protective housing 31, although the connecting plate 341 is not yet connected to the transmission belt 334 at this time, the connecting plate 341 can be driven to move through the contact block 343. During this process, as the movable plate 342 gradually moves upward, the movable clamping component 3441 can finally be clamped with the clamping groove 3443 again, establishing a stable connection relationship between the connecting plate 341 and the transmission belt 334; it can be seen that the fixing component 344 provided by the present invention can synchronously release the connection relationship between the connecting plate 341 and the transmission belt 334 when the cleaning brush 32 reaches the preset rinsing area 312 position, enabling the transmission belt 334 to drive the rinsing component 35 to move alone without manual active control or active device switching, so that the connection state between the connecting component 34 and the traction component 33 can synchronously adapt to the position switching of the cleaning brush 32.

[0050] Please refer to Figures 8 to 10, in order to realize the automatic rinsing function of the cleaning brush 32 returned to the rinsing area 312, a way of designing the rinsing component 35 in the present invention is as follows: The rinsing component 35 includes a pressing plate 351, two driving bodies 352 and two mating connecting bodies 353. The pressing plate 351 is slidably arranged between the inner bottom walls of the protective housing 31. Two support springs 354 are fixedly installed between the pressing plate 351 and the inner side walls of the protective housing 31. The two support springs 354 are symmetrically distributed at both ends of the pressing plate 351. Two driving bodies 352 are correspondingly installed on the top surfaces of the two transmission belts 334. Through holes 355 and non-through positioning grooves 356 are provided on both sides of the protective housing 31 close to the driving bodies 352. The positioning grooves 356 have the same shape, and the positioning grooves 356 are located directly below the through holes 355. The two mating connecting bodies 353 are respectively located on both sides of the protective housing 31. The two mating connecting bodies 353 correspond to the two driving bodies 352 one by one. Moving shafts 3510 are fixedly installed at both ends of the cleaning brush 32. After one end of the moving shaft 3510 slidably penetrates through the through hole 355, it is fixed to one side of the mating connecting body 353. Through the sliding fit between the mating connecting body 353 and the positioning groove 356, the mating connecting body 353 can be limited, so that when it is subjected to a horizontal force, the mating connecting body 353 can be prevented from rotating. An upward movement groove 357 adapted to the driving body 352 is provided at the lower end of the mating connecting body 353. A drainage groove 358 is provided on the inner bottom wall of the rinsing area 312.

[0051] When the above-mentioned rinsing component 35 is in use and during the initial cleaning operation, since the cleaning brush 32 is in the rinsing area 312 and is in a relatively dry state, it is necessary to first supplement a certain amount of clean water into the cleaning brush 32. At this time, the connecting component 34 has been separated from the traction component 33, and the driving body 352 is also engaged with the mating connecting body 353, connecting the traction component 33 with the rinsing component 35. By continuously rotating the traction motor 331 forward, the drive belt 334 drives the driving body 352 to move. Under the thrust of the driving body 352, the mating connecting body 353 can drive the pressing plate 351 to move closer to the cleaning brush 32, stretching the support spring 354. When the moving shaft 3510 on one side of the mating connecting body 353 slides to the upward moving section of the moving guide groove 355, the mating connecting body 353 receives an upward force and can move upward synchronously, thereby driving the pressing plate 351 to move upward, separating the bottom of the pressing plate 351 from the inner bottom wall of the protective housing 31. Then, the clean water in the clean water storage area 311 can flow into the rinsing area 312 and is finally sucked by the cleaning brush 32. After that, when the moving shaft 3510 on one side of the mating connecting body 353 reaches the highest point of the moving guide groove 355, by rotating the traction motor 331 in the reverse direction, the mating connecting body 353 can be driven to move back to its original position, causing the pressing plate 351 to move downward and contact the inner bottom wall of the protective housing 31, stopping the clean water from entering the rinsing area 312. Then, by continuously rotating the traction motor 331, the drive belt 334 can drive the connecting component 34 and the cleaning brush 32 to move together, thereby completing the cleaning operation on the top surface of the solar panel 2;

[0052] When it is necessary to rinse the cleaning plate, after the cleaning brush 32 returns to the rinsing area 312, repeat the above operation to make the clean water enter the rinsing area 312 first and be absorbed by the cleaning brush 32. The difference is that when the moving shaft 3510 on one side of the mating connecting body 353 slides to the translation section of the moving guide groove 355, the traction motor 331 will continue to rotate, causing the mating connecting body 353 to move downward first. The bottom of the pressing plate 351 contacts the bottom wall of the protective housing 31, and the clean water no longer enters the rinsing area 312. Subsequently, the pressing plate 351 gradually approaches the cleaning brush 32 and generates a squeezing force on it, squeezing out the dust adsorbed in the cleaning brush 32 together with the sewage. The squeezed sewage directly drains out of the rinsing area 312 through the drain groove 358. Then, by the reverse movement of the traction motor 331, the mating connecting body 353 is driven to move to the highest point of the moving guide groove 355 again, allowing the clean water to flow into the rinsing area 312 again and be absorbed by the cleaning brush 32. Then, the traction motor 331 rotates forward again, causing the pressing plate 351 to squeeze the cleaning brush 32 again. By repeating this operation several times, the cleaning brush 32 can be rinsed clean, and then the cleaning brush 32 can be driven to continue cleaning the top surface of the solar panel 2.

[0053] The rinsing component 35 provided in the present invention, in cooperation with the traction component 33, can achieve the automatic rinsing function of the cleaning brush 32. By first making the cleaning brush 32 suck in clean water and then squeezing the cleaning brush 32 to squeeze out the water it absorbs together with dust, in a way that simulates the real mopping and rinsing method, it can effectively clean the dust in the cleaning brush 32. By controlling the traction motor 331 to repeatedly switch the rotation direction, the repeated squeezing and rinsing operation of the cleaning brush 32 can be achieved. It can be seen that the traction component 33 provided in the present invention is not only used to drive the cleaning brush 32 to perform cleaning operations, but also, in cooperation with the rinsing component 35, can achieve the automatic rinsing function of the cleaning brush 32.

[0054] Please refer to Figure 11 , it should be noted that, as a further optimization method of the above solution, a number of evenly distributed extrusion protrusions 359 can be provided on the side of the extrusion plate 351 close to the cleaning brush 32. The extrusion protrusions 359 are used to extrude the cleaning brush 32, so that the side of the extrusion plate 351 does not directly contact the cleaning brush 32. On the one hand, the extrusion force is in a concentrated end-point type, improving the extrusion effect. On the other hand, a gap is left between the side of the extrusion plate 351 and the cleaning brush 32 to avoid the negative pressure generated from making it difficult to separate the two.

[0055] Please refer to Figures 1 to 2 , in order to timely supplement clean water into the clean water storage area 311, the present invention provides a water supply component 36. Specifically: the water supply component 36 includes a water storage tank 361 and a water level monitoring member 362. The water storage tank 361 is fixedly installed on one side of the support frame 1. The water level monitoring member 362 can be a water level sensor, which is used to monitor the water level situation in the clean water storage area 311. The water storage tank 361 is connected to the clean water storage area 311 through a water supply pump 363. The water level monitoring member 362 is installed on the inner wall of the clean water storage area 311; after the water level monitoring member 362 monitors that the water in the clean water storage area 311 is lower than the preset amount, it sends a signal to the external control system, and the external control system starts to control the water supply pump 363 to start, pumping out the water in the water storage tank 361 and transporting it to the clean water storage area 311 to achieve the automatic replenishment function of clean water.

[0056] Please refer to Figure 2 , it should be noted that, as a further optimization method of the above solution, a number of evenly distributed drainage grooves 37 are provided on the top surface of the protective housing 31. A water collecting groove opening 38 is provided on the top surface of the protective housing 31. The water collecting groove opening 38 is located above the clean water storage area 311. The water collecting groove opening 38 is communicated with the ends of a number of drainage grooves 37. A drain pipe 39 communicated with the clean water storage area 311 is installed on one side of the protective housing 31. The other end of the drain pipe 39 is communicated with one side of the water storage tank 361;

[0057] When it is rainy, the external rainwater can flow into the water collection tank opening 38 through the drainage groove 37 and then directly fall into the clean water storage area 311, realizing the function of automatic rainwater collection. When the clean water in the clean water storage area 311 exceeds the preset amount, the excess clean water will directly flow into the water storage tank 361 through the drain pipe 39.

[0058] Embodiment 2

[0059] Please refer to Figure 12 and Figure 13 When the photovoltaic power generation system is composed of multiple solar panels 2 arranged side by side, it is necessary to clean the solar panels 2 simultaneously at this time. Therefore, in order to adapt to this usage scenario, the present invention further improves the above solution. The difference from Embodiment 1 is that a cleaning mechanism 3 is correspondingly arranged at the upper end of each solar panel 2, and the cleaning mechanism 3 in the middle is driven by a traction component 33, while the cleaning mechanisms 3 on both sides are driven by the traction component 33 in the middle cleaning mechanism 3, that is, the connecting components 34 in the cleaning mechanisms 3 on both sides are connected to the connecting components 34 in the middle cleaning mechanism 3. In this way, the driving source can be saved and the power consumption can be reduced. In addition, the cleaning mechanisms 3 on both sides share a water supply component 36 with the cleaning mechanism 3 in the middle.

[0060] The above describes the embodiments of the specific implementation manner, but this embodiment is not limited to the above specific implementation manner. The above specific implementation manner is only illustrative and not restrictive. Under the inspiration of this embodiment, those of ordinary skill in the art can also make many forms, all of which fall within the protection scope of this embodiment.

Claims

1. A self-cleaning device for a solar panel of a distributed photovoltaic power station, characterized in that, Comprising: A support frame and a cleaning mechanism; The support frame is used to fix the solar panel, and the cleaning mechanism is arranged at the upper end of the support frame; The cleaning mechanism includes a protective housing, a cleaning brush, a traction component, a connecting component, a rinsing component and a water supply component; The protective housing is fixed at the upper end of the support frame, and its side facing the solar panel is an open structure; The cleaning brush is connected to the traction component through the connecting component, and the traction component drives the cleaning brush to move between the rinsing area of the protective housing and the top surface of the solar panel; The rinsing component is arranged inside the protective housing and is used to squeeze and clean the cleaning brush returning to the rinsing area; The water supply component is communicated with the clean water storage area of the protective housing and is used to supplement the cleaning water; The traction component includes a traction motor, upper and lower rotating shafts arranged in parallel, belt pulleys and a transmission belt; the traction motor drives the upper rotating shaft and realizes linkage with the lower rotating shaft through the belt pulleys and the transmission belt; The connecting component includes a connecting plate detachably connected to the transmission belt and a sliding shaft, and the sliding shaft is connected to the cleaning brush through a limit guide groove; The connecting component further includes a fixing member, and the fixing member includes a movable clamping member and a return spring; the movable clamping member is elastically connected to the connecting plate through the return spring, and a clamping groove adapted to the movable clamping member is arranged on the top surface of the transmission belt, so as to automatically disconnect the connection when the cleaning brush reaches the rinsing area; The rinsing component includes a pressing plate, a driving body and a cooperating connecting body; the driving body is connected to the transmission belt, and the cooperating connecting body drives the pressing plate to translate and lift through a movable guide groove, so as to perform a water absorption and extrusion cyclic cleaning on the cleaning brush.

2. The self-cleaning device according to claim 1, wherein Uniformly distributed extrusion protrusions are arranged on one side of the pressing plate close to the cleaning brush, and a drainage groove is arranged at the bottom of the rinsing area.

3. The self-cleaning device according to claim 1, characterized in that, The water supply component includes a water storage tank, a water level monitoring member and a water supply pump; the water level monitoring member monitors the water level of the clean water storage area in real time, and the water supply pump automatically supplements clean water according to the water level signal.

4. The self-cleaning device according to claim 3, characterized in that, A drainage groove and a water collecting tank opening are arranged on the top surface of the protective housing, and the water collecting tank opening is communicated with the clean water storage area.

5. The self-cleaning device according to claim 1, wherein The cleaning brush includes a rigid support part and a water-absorbing sponge cleaning part, and its length matches the lateral dimension of the solar panel.

6. The self-cleaning device according to any one of claims 1-5, characterized in that, A support spring is arranged inside the protective housing and is used to provide a return elastic force for the pressing plate.

7. The self-cleaning device according to claim 1, wherein When multiple solar panels are arranged side by side, the traction components of each cleaning mechanism are synchronously driven through a linkage structure and share the same water supply component.

Images