Self-cleaning device for solar panel of distributed photovoltaic power station

Abstract

The invention relates to the technical field of photovoltaic power generation, and discloses a distributed photovoltaic power station solar panel self-cleaning device which comprises a supporting frame and a cleaning mechanism. The supporting frame is used for fixing a solar panel, and the cleaning mechanism is arranged at the upper end of the supporting frame; the cleaning mechanism comprises a protective shell, a cleaning brush, a traction part, a connecting part, a rinsing part and a water supply part; and the protective shell is fixed at the upper end of the support frame, and one side of the protective shell facing the solar panel is of an open structure. By arranging the rinsing component, after the cleaning brush returns to the protective shell, the transmission belt is used for driving the squeezing action in a linkage mode, stains adsorbed to the water absorption sponge cleaning part are squeezed out and discharged through the drainage groove, the rinsing mode of a real mop is simulated, the cleaning brush can be automatically rinsed, and the problem of secondary pollution of residues is solved.

Description

Technical Field

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

[0002] Distributed photovoltaic power stations are small-scale power generation systems that use decentralized resources. They are 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 electricity through photovoltaic modules. It is widely used in scenarios such as building roofs and needs to be powered by the public power grid. Since solar panels are exposed to the outdoor environment for a long time, the dust and pollutants accumulated on the surface will significantly reduce the photoelectric conversion efficiency, so regular cleaning and maintenance are required to ensure power generation performance.

[0003] At present, most mainstream cleaning devices use mechanical scraping. For example, in the prior art, the publication number CN117978071A discloses a self-cleaning device for solar panels in distributed photovoltaic power stations. It scrapes and cleans the surface of the solar panel by a wind-driven cleaning brush. Although it reduces energy consumption, it has obvious defects: the cleaning brush directly contacts the panel surface and adsorbs residual pollutants, resulting in secondary pollution during subsequent cleaning; and it is difficult to effectively remove stubborn adsorbents on the panel surface (such as sticky dust, bird droppings, etc.) by dry scraping alone, and the cleaning effect is limited. Therefore, it is urgent to design a photovoltaic panel cleaning device with both self-cleaning function and efficient 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 in a distributed photovoltaic power station to solve the above-mentioned technical problems.

[0005] The present invention solves the above-mentioned 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, comprising: 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 comprises a protective shell, a cleaning brush, a traction component, a connecting component, a rinsing component and a water supply component;

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

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

[0011] The rinsing component is arranged inside the protective shell and is used to squeeze and clean the cleaning brush returned to the rinsing area;

[0012] The water supply component is communicated with the clean water storage area of ​​the protective shell for replenishing cleaning water.

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

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

[0015] Preferably, the connecting component also includes a fixing part, which includes a movable clamp and a reset spring; the movable clamp is elastically connected to the connecting plate through the reset spring, and the top surface of the transmission belt is provided with a clamping groove adapted to the movable clamp, so that the cleaning brush can automatically disconnect when it reaches the rinsing area.

[0016] Preferably, the rinsing component includes an extrusion plate, a driving body and a matching connector; the driving body is connected to a transmission belt, and the matching connector drives the extrusion plate to translate and rise and fall through a movable guide groove, so as to absorb water, squeeze and circulate the cleaning brush for cleaning.

[0017] Preferably, a side of the extrusion plate close to the cleaning brush is provided with evenly distributed extrusion 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 component and a water supply pump; the water level monitoring component monitors the water level of the clean water storage area in real time, and the water supply pump automatically replenishes clean water according to the water level signal.

[0019] Preferably, the top surface of the protective shell is provided with a drainage groove and a water collecting trough opening, and the water collecting trough opening is connected to the clean water storage area.

[0020] Preferably, the cleaning brush comprises a rigid support portion and a water-absorbing sponge cleaning portion, and the length of the cleaning brush matches the lateral dimension of the solar panel.

[0021] Preferably, a support spring is provided in the protective shell to provide a restoring elastic force to the extrusion 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:

[0024] The present invention provides a rinsing component, which uses a transmission belt to drive the extrusion action after the cleaning brush returns to the protective shell, so that the stains adsorbed on the cleaning part of the absorbent sponge are squeezed out and discharged through the drain groove. By simulating the rinsing method of a real mop, the cleaning brush can be automatically rinsed, thereby solving the problem of secondary contamination of residues. At the same time, the wet state of the cleaning brush is combined with the reciprocating scraping driven by the traction component, and the stubborn adsorbed matter is effectively peeled off through the synergistic effect of water immersion softening and mechanical friction. The storage design of the protective shell and the rainwater recovery function of the water supply component further ensure the environmental durability and cleaning continuity of the cleaning brush, thereby achieving the dual optimization of efficient self-cleaning and increased equipment life. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0026] Figure 2 It is a structural schematic 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 It is a structural schematic diagram of 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 It is a structural schematic diagram of a supporting and traction component in a self-cleaning device for solar panels of a distributed photovoltaic power station provided by the present invention;

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

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

[0031] Figure 7 It is a cross-sectional view of the local position of the connecting components in a self-cleaning device for solar panels of a distributed photovoltaic power station provided by the present invention;

[0032] Figure 8 It is a structural schematic 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] Fig. 9 It is a structural schematic diagram of the local position of the washing component and the protective shell in a self-cleaning device for solar panels of a distributed photovoltaic power station provided by the present invention;

[0034] Fig.10It is a structural schematic 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] Fig.11 It is a structural schematic diagram of a protective housing and a water supply component in a self-cleaning device for solar panels of a distributed photovoltaic power station provided by the present invention;

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

[0037] Fig.13 It is a schematic back view of a second embodiment of a self-cleaning device for solar panels in 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 shell; 311, clean water storage area; 312, rinse area; 32, cleaning brush; 33, traction component; 331, traction motor; 332, rotating shaft; 333, drive pulley; 334, drive belt; 34, connecting component; 341, connecting plate; 342, movable plate; 343, contact block; 344, fixing part; 3441, movable clamp; 3442, reset spring; 3443, clamping slot; 345, limit Positioning guide groove; 346, connecting spring; 347, sliding shaft; 35, washing component; 351, extrusion plate; 352, driving body; 353, matching connecting body; 354, supporting spring; 355, movable guide groove; 356, positioning groove body; 357, upward groove; 358, drainage groove; 359, extrusion protrusion; 3510, movable shaft; 36, water supply component; 361, water storage tank; 362, water level monitoring component; 363, water supply pump; 37, drainage groove; 38, water collection groove mouth; 39, drainage pipe. DETAILED DESCRIPTION

[0039] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that the discussion of these embodiments is only to enable those skilled in the art to better understand and implement the subject matter described herein, and the functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the contents of this specification. Each example may omit, replace or add various processes or components as needed. In addition, the features described relative to some examples may 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 provide support for the solar panel 2, 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; wherein the cleaning mechanism 3 comprises a protective shell 31, a cleaning brush 32, a traction component 33, a connecting component 34, a rinse component 35 and a water supply component 36; the protective shell 31 is fixedly mounted on the upper end of the support frame 1, and its side facing the upper end of the solar panel 2 is in an open state, so that the cleaning brush 32 can move from the protective shell 31 to the top surface of the solar panel 2; the cleaning brush 32 is arranged in the rinse area 312, and is used to scrape and clean the top surface of the solar panel 2, and the cleaning brush 32 is retracted in the rinse area 312 when not in use, with the help of The protective shell 31 protects it to avoid long-term exposure to the external environment and aging damage; the cleaning brush 32 includes a supporting part and a cleaning part, the cleaning part is fixed to the bottom of the supporting part, the cleaning part is a water-absorbing material, the water-absorbing material can be a water-absorbing sponge, and the supporting part is 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, and the rinsing component 35 is arranged on the inner bottom wall of the protective shell 31, which divides the inner bottom wall of the protective shell 31 into a clean water storage area 311 and a rinsing area 312, and the rinsing component 35 is used to rinse the cleaning brush 32 after the cleaning operation is completed; the water supply component 36 is connected to the clean water storage area 311, and it is used to replenish clean water to the clean water storage area 311.

[0042] The use process of the above-mentioned 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 first move obliquely upward from the rinsing area 312. After the cleaning brush 32 reaches the opening position of the protective shell 31, its bottom is flush with the top surface of the solar panel 2, so that the cleaning brush 32 is in a posture to be cleaned. After that, the cleaning brush 32 is continued to be driven by the traction component 33 to slide in a straight line 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 at the same time. The cleaning brush 32 is driven by the traction component 33 to slide back and forth in a straight line on the top surface of the solar panel 2, so that the top surface of the solar panel 2 can be fully cleaned. The contact scraping and water washing method between the solar panels 2 can first suck the dust with smaller particles into the cleaning brush 32. For the adsorbent with stronger adsorption force, it is softened by repeated water washing and scraping friction, 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 will not cause secondary pollution. In addition, the number of reciprocating times of the cleaning brush 32 on the top surface of the solar panel 2 in a single cleaning operation can be set according to actual cleaning needs. For example, the cleaning brush 32 can be set to be rinsed after two reciprocating movements. Then, after the cleaning brush 32 completes the reciprocating movement 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.

[0043] When the cleaning brush is rinsed, the traction component 33 is activated to actively release the connection with the connecting component 34 and establish a connection with the rinsing component 35 at the same time. The traction component 33 drives the rinsing component 35 to move alone, while the connecting component 34 and the rinsing component 35 are no longer activated. The traction component 33 first drives the rinsing component 35 to move horizontally to make it close to the cleaning brush 32, and then moves upward 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. Finally, the rinsing component 35 is driven to move horizontally to squeeze the cleaning brush 32 after sucking in the clean water. The internal adsorbed matter of the squeezed cleaning brush 32 is discharged to the outside of the rinsing area 312 along with the sewage, so as to realize the automatic rinsing function of the cleaning brush 32, so that the cleaning brush 32 can be kept in a relatively clean state, and secondary pollution to the top surface of the solar panel 2 can be avoided during the next cleaning operation.

[0044] For details, 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 7In order to achieve automatic disconnection between the connecting component 34 and the traction component 33 after the cleaning brush 32 reaches the preset position of the rinsing area 312, the present invention designs a fixing member 344, specifically: the fixing member 344 includes a movable clamping member 3441, the movable clamping member 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 member 3441 and the connecting plate 341, the top end of the movable clamping member 3441 is fitted with the bottom end of the movable plate 342, and the top surface of the transmission belt 334 is provided with a card slot 3443 adapted to the movable clamping member 3441, and when the return spring 3442 is not compressed, the lower end of the movable clamping member 3441 is clamped in the card slot 3443.

[0049] When the cleaning brush 32 returns to the washing area 312 from the opening of the protective shell 31, the sliding shaft 347 on one side of the movable plate 342 first slides along the translation section of the limiting guide groove 345, and the movable plate 342 slides translationally. When the sliding shaft 347 on one side of the movable plate 342 slides into the upward section of the limiting guide groove 345, the sliding shaft 347 is subjected to a downward force, thereby driving the movable plate 342 to move downward and squeezing the connecting spring 346 to contract. When the sliding shaft 347 of the movable plate 342 is about to slide to the end of the downward movement section of the limiting guide groove 345, the movable plate 342 begins to contact the top of the movable clamping member 3441 and squeezes the movable clamping member 3441 to move downward, so that the bottom end of the movable clamping member 3441 is separated 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 limiting guide groove 345, the bottom end of the movable clamping member 3441 can be driven to completely separate from the clamping groove 3443. At this time, the connecting plate 341 The bottom end is disconnected from the top surface of the transmission belt 334, and the traction component 33 is separated from the connecting component 34. When the cleaning brush 32 of the traction component 33 moves to the outside of the protective shell 31, although the connecting plate 341 has not yet established a connection with the transmission belt 334, the connecting plate 341 can be driven to move through the contact block 343. In this process, as the movable plate 342 gradually moves upward, the movable clamping member 3441 can finally be clamped with the clamping slot 3443 again, so that a stable connection relationship is established between the connecting plate 341 and the transmission belt 334. It can be seen that the fixing member 344 provided in 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, so that the transmission belt 334 can drive the rinsing component 35 to move alone, without the need for active human 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 10In order to realize the automatic rinsing function of the cleaning brush 32 returned to the rinsing area 312, the present invention designs a way of designing a rinsing component 35, specifically: the rinsing component 35 includes a squeezing plate 351, two driving bodies 352 and two matching connecting bodies 353, the squeezing plate 351 is slidably arranged between the inner bottom wall of the protective shell 31, and two supporting springs 354 are fixedly installed between the squeezing plate 351 and the inner side wall of the protective shell 31, and the two supporting springs 354 are symmetrically distributed at both ends of the squeezing plate 351, and two driving bodies 352 are added and installed on the top surfaces of the two transmission belts 334 respectively, and the protective shell 31 is close to The driving body 352 is provided with a through movable guide groove 355 and a non-through positioning groove body 356 on both sides, and the positioning groove body 356 has the same shape as the positioning groove body 356 , and the positioning groove body 356 is located directly below the movable guide groove 355, the two matching connectors 353 are respectively located on both sides of the protective shell 31, and the two matching connectors 353 correspond to the two driving bodies 352 in a one-to-one manner. A movable shaft 3510 is fixedly installed at both ends of the cleaning brush 32. After one end of the movable shaft 3510 slides through the movable guide groove 355, it is fixed to one side of the matching connector 353. Through the matching sliding between the matching connector 353 and the positioning groove body 356, the matching connector 353 can be limited, so that when it is subjected to a horizontal force, the matching connector 353 can be prevented from rotating. The lower end of the matching connector 353 is provided with an upward moving groove 357 adapted to the driving body 352, and the inner bottom wall of the washing area 312 is provided with a drainage groove 358.

[0051] When the above-mentioned rinsing component 35 is in use, during the initial cleaning operation, since the cleaning brush 32 is in the rinsing area 312, it is in a relatively dry state. Therefore, it is necessary to first add a certain amount of clean water to 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 matching connecting body 353, so that the traction component 33 is connected to the rinsing component 35, and the traction motor 331 continues to rotate forward, so that the transmission belt 334 drives the driving body 352 to move, and the matching connecting body 353 is subjected to the thrust of the driving body 352, which can drive the extrusion plate 351 to move close to the cleaning brush 32 and stretch the support spring 354. When the movable shaft 3510 on one side of the matching connecting body 353 slides to the upward movement section of the movable guide groove 355, the matching connecting body 3 53 is subjected to an upward force, so that the matching connector 353 can be synchronously moved upward, thereby driving the extrusion plate 351 to move upward, so that its bottom is separated from the inner bottom wall of the protective shell 31, and the clean water in the clean water storage area 311 can flow into the rinse area 312 and finally be sucked by the cleaning brush 32. Afterwards, when the movable shaft 3510 on one side of the matching connector 353 reaches the highest point of the movable guide groove 355, the traction motor 331 rotates in the opposite direction, which can drive the matching connector 353 to move and reset, so that the extrusion plate 351 can move downward and contact the inner bottom wall of the protective shell 31, so that the clean water stops entering the rinse area 312, and then the traction motor 331 continues to rotate, so that the transmission belt 334 can drive the connecting component 34 and the cleaning brush 32 to move together, thereby completing the cleaning operation of the top surface of the solar panel 2;

[0052] When it is necessary to rinse the cleaning plate, the cleaning brush 32 returns to the rinsing area 312 and repeats the above operation, so that the clean water first enters the rinsing area 312 and is absorbed by the cleaning brush 32. The difference is that when the movable shaft 3510 on one side of the matching connector 353 slides to the translation section of the movable guide groove 355, the traction motor 331 will continue to rotate, so that the matching connector 353 moves down first, the bottom of the squeezing plate 351 contacts the bottom wall of the protective shell 31, and the clean water no longer enters the rinsing area 312. Then the squeezing plate 351 gradually approaches the cleaning brush 32 and exerts a squeezing force on it, so that the cleaning brush can be The dust absorbed in 32 is squeezed out together with the sewage, and the squeezed sewage is directly discharged from the rinsing area 312 through the drain groove 358, and then the traction motor 331 moves in the reverse direction, driving the matching connector 353 to move again to the highest point of the movable guide groove 355, so that the clean water flows into the rinsing area 312 again and is absorbed by the cleaning brush 32, and then the traction motor 331 rotates forward again, so that the squeezing plate 351 squeezes the cleaning brush 32 again, and the operation is repeated several times, the cleaning brush 32 can be rinsed clean, and then the cleaning brush 32 can continue to be driven to clean the top surface of the solar panel 2.

[0053] The rinsing component 35 provided in the present invention can realize the automatic rinsing function of the cleaning brush 32 by being used in conjunction with the traction component 33. The method of first allowing the cleaning brush 32 to absorb clean water and then squeezing the cleaning brush 32 to squeeze out the absorbed water together with the dust simulates the actual dragging and rinsing method, and can effectively clean out the dust in the cleaning brush 32. By controlling the traction motor 331 to repeatedly switch the rotation direction, the cleaning brush 32 can be repeatedly squeezed and rinsed. 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 used in conjunction with the rinsing component 35, it can also realize the automatic rinsing function of the cleaning brush 32.

[0054] Please refer to Fig.11 It should be noted that, as a further optimization method of the above-mentioned scheme, a plurality 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 squeeze the cleaning brush 32 so that the side of the extrusion plate 351 will not directly contact the cleaning brush 32. On the one hand, the extrusion force is concentrated in an end-point type to improve 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 difficulty in separating the two due to the negative pressure generated.

[0055] Please refer to Figure 1 to Figure 2 In order to replenish clean water into the clean water storage area 311 in time, the present invention is provided with a water supply component 36, specifically: the water supply component 36 includes a water tank 361 and a water level monitoring component 362, the water tank 361 is fixedly installed on one side of the support frame 1, the water level monitoring component 362 can be a water level sensor, which is used to monitor the water level in the clean water storage area 311, the water tank 361 and the clean water storage area 311 are connected through a water supply pump 363, and the water level monitoring component 362 is installed on the inner wall of the clean water storage area 311; after the water level monitoring component 362 detects that the water in the clean water storage area 311 is lower than the preset amount, a signal is sent to the external control system, and the external control system starts to control the water supply pump 363 to start, pump out the water in the water tank 361 and transport it to the clean water storage area 311, so as to realize the automatic replenishment function of clean water.

[0056] Please refer to Figure 2 It should be noted that, as a further optimization of the above scheme, a plurality of evenly distributed drainage grooves 37 are provided on the top surface of the protective shell 31, a water collecting groove opening 38 is provided on the top surface of the protective shell 31, the water collecting groove opening 38 is located above the clean water storage area 311, the water collecting groove opening 38 is connected with the ends of the plurality of drainage grooves 37, a drainage pipe 39 connected with the clean water storage area 311 is installed on one side of the protective shell 31, and the other end of the drainage pipe 39 is connected with one side of the water storage tank 361;

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

[0058] Embodiment 2

[0059] Please refer to Fig.12 and Fig.13 When the photovoltaic power generation system is composed of multiple solar panels 2 arranged side by side, the solar panels 2 need to be cleaned at the same time. Therefore, in order to adapt to this usage scenario, the present invention further improves the above scheme. The difference from the first embodiment is that: a cleaning mechanism 3 is correspondingly arranged at the upper end of each solar panel 2, and the cleaning mechanism 3 located in the middle is driven by a traction component 33, and 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, which can save the driving source and reduce the power consumption. In addition, the cleaning mechanisms 3 on both sides also share a water supply component 36 with the cleaning mechanism 3 in the middle.

[0060] An example of the present specific implementation mode is described above, but the present embodiment is not limited to the above-mentioned specific implementation mode, which is merely illustrative and not restrictive. A person skilled in the art may make many forms inspired by the present embodiment, all of which are protected by the present embodiment.

Claims

1. A self-cleaning device for solar panels of a distributed photovoltaic power station, characterized in that: include: Support frame and 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 comprises a protective shell, a cleaning brush, a traction component, a connecting component, a rinsing component and a water supply component; The protective shell is fixed to the upper end of the support frame, and the side thereof facing the solar panel is an open structure; The cleaning brush is connected to the traction component through a connecting component, and the traction component drives the cleaning brush to move between the washing area of ​​the protective shell and the top surface of the solar panel; The rinsing component is arranged inside the protective shell and is used to squeeze and clean the cleaning brush returned to the rinsing area; The water supply component is communicated with the clean water storage area of ​​the protective shell for replenishing cleaning water.

2. The self-cleaning device according to claim 1, characterized in that: The traction component includes a traction motor, upper and lower rotating shafts arranged in parallel, a transmission pulley and a transmission belt; the traction motor drives the upper rotating shaft and realizes linkage with the lower rotating shaft through the transmission pulley and the transmission belt; The connecting component comprises a connecting plate and a sliding shaft which are detachably connected to the transmission belt, and the sliding shaft is connected to the cleaning brush via a limiting guide groove.

3. The self-cleaning device according to claim 2, characterized in that: The connecting component is a fixing component, and the connecting component also includes a fixing component, and the fixing component includes a movable clamping component and a reset spring; the movable clamping component is elastically connected to the connecting plate through the reset spring, and the top surface of the transmission belt is provided with a clamping groove adapted to the movable clamping component, so that the cleaning brush can automatically disconnect when it reaches the rinsing area.

4. The self-cleaning device according to claim 1, characterized in that: The rinsing component includes an extrusion plate, a driving body and a matching connecting body; the driving body is connected to the transmission belt, and the matching connecting body drives the extrusion plate to translate and rise and fall through a movable guide groove, so as to absorb water, squeeze and circulate the cleaning brush for cleaning.

5. The self-cleaning device according to claim 4, characterized in that: The side of the extrusion plate close to the cleaning brush is provided with evenly distributed extrusion protrusions, and the bottom of the rinsing area is provided with a drainage groove.

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

7. The self-cleaning device according to claim 6, characterized in that: The top surface of the protective shell is provided with a drainage groove and a water collecting groove opening, and the water collecting groove opening is communicated with the clean water storage area.

8. The self-cleaning device according to claim 1, characterized in that: The cleaning brush comprises a rigid supporting portion and a water-absorbing sponge cleaning portion, and the length of the cleaning brush matches the lateral dimension of the solar panel.

9. The self-cleaning device according to any one of claims 1 to 8, characterized in that: A supporting spring is arranged in the protective shell to provide a restoring elastic force to the extrusion plate.

10. The self-cleaning device according to claim 1, characterized in that: 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