Self-cleaning equipment for photovoltaic power generation panel

Abstract

The invention discloses photovoltaic power generation panel self-cleaning equipment which comprises a photovoltaic module frame, a dustproof film, a film driving mechanism, a film cleaning mechanism and a photovoltaic panel fog and water removing mechanism. The photovoltaic module frame comprises a bottom plate, a rear side plate, a front side plate and a top inclined plate; the film driving mechanism comprises a guide roller combination and a driving roller combination; the membrane cleaning mechanism comprises a cleaning pump and a cleaning membrane piece; the photovoltaic panel fog and water removing mechanism comprises a photovoltaic surface scraping strip and a scraping strip back-and-forth pulling motor, and a layer of water absorbing sponge is arranged at the bottom of the photovoltaic surface scraping strip. The surface of the photovoltaic panel does not need to be cleaned, cleaning is convenient, automatic cleaning is achieved, the photovoltaic panel below the dustproof film is in a sealed state, water vapor agglutination can occur, and air water drops or fog layers can be discharged through the photovoltaic panel fog water removing mechanism at regular intervals, so that the surface glossiness of the photovoltaic panel is improved, and the light absorptivity is improved.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaic cleaning, and in particular to a self-cleaning device for a photovoltaic power generation panel. Background Art

[0002] Since photovoltaic panels need to be set up outdoors for a long time, the surface of the panels will be covered with dust, dirt, bird droppings, pollen, sand or other pollutants. These substances will block or scatter part of the incident sunlight, reduce the effective light reaching the photovoltaic panels, and thus reduce the conversion efficiency and power generation performance of the photovoltaic panels. Therefore, the panels need to be cleaned regularly. The commonly used cleaning method is to use the sealing of the panels themselves for workers to directly flush the panels with a water gun. However, this cleaning method is troublesome for cleaning battery components, and it is troublesome to recover the water after flushing, which will cause a lot of water waste. Moreover, for photovoltaic bases laid over a large area, water pipes need to be arranged and cannot be dragged. The arranged water pipes need to be equipped with water supply interfaces next to each or every few adjacent photovoltaic racks for cleaning. It is very time-consuming and troublesome for people to shuttle back and forth in the official service base to clean, and the operation is also troublesome. If the cleaning is not done properly, the surface of the photovoltaic panels will be damaged. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems in the related art to a certain extent. To this end, one purpose of the present invention is to provide a photovoltaic panel self-cleaning device, which solves the problems of manual cleaning of photovoltaic panels, easy damage to photovoltaic panels during cleaning, and water cleaning waste.

[0004] A photovoltaic panel self-cleaning device according to the present invention comprises a photovoltaic component frame, a dustproof film and a film driving mechanism, a film cleaning mechanism and a photovoltaic panel demisting water mechanism;

[0005] The photovoltaic component rack comprises a bottom plate, a rear side plate, a front side plate and a top inclined plate, the rear side edge and the front side edge of the bottom plate are respectively vertically connected with the rear side plate and the front side plate, the rear side edge and the front side edge of the top inclined plate are respectively connected with the top edge of the rear side plate and the front side plate, a cleaning liquid cavity is provided in the bottom plate, a cavity is provided in the rear side plate and the front side plate, an inner concave square groove is provided on the upper surface of the top inclined plate, a photovoltaic component panel is provided at the bottom of the inner concave square groove, and the cavities of the rear side plate and the front side plate are both connected with the inner concave square groove;

[0006] The film driving mechanism includes a guide roller assembly and a drive roller assembly. Guide rollers are provided inside the connection positions between the bottom plate and the rear side plate, the bottom plate and the front side plate, and the rear side plate and the top inclined plate. A drive roller assembly is provided inside the connection position between the front side plate and the top inclined plate. The dustproof film is a conveyor belt-type dustproof film. The dustproof film bypasses the guide rollers at three locations and passes through the drive roller assembly. The dustproof film passes through the concave square groove and the two sides of the dustproof film extend to the two side walls of the concave square groove so as to completely cover the photovoltaic module panel. The upper and lower side walls in the concave square groove are provided with two support bars below the dustproof film.

[0007] The membrane cleaning mechanism includes a cleaning pump and a cleaning membrane member, the cleaning membrane member includes a cleaning liquid box and cleaning nozzles arranged in a matrix on one side of the cleaning liquid box, the water inlet pipe of the cleaning pump is inserted into the cleaning liquid cavity in the bottom plate, the water outlet pipe of the cleaning pump is inserted from the side wall of the front side plate to the inside and connected to the cleaning liquid box, the dustproof membrane is led out from the driving roller assembly and then passes vertically downward from the front side of the cleaning nozzle and then enters the cleaning liquid cavity through the guide roller, and the cleaning pump is installed on the outer upper surface of the bottom plate;

[0008] The photovoltaic panel defogger mechanism includes a photovoltaic surface scraper and a scraper strip pulling motor back and forth. Limiting strip grooves are symmetrically provided on the two side walls of the concave square groove and limiting rods are provided in the limiting strip grooves. Both ends of the photovoltaic surface scraper are movably sleeved on the limiting rods. A rope pulling sleeve disk is sleeved on the rotating shaft of the scraper strip pulling motor back and forth. The pulling rope is connected from the middle position of the front side of the photovoltaic surface scraper, and then wrapped around the rope pulling sleeve disk for one circle and then connected to the middle position of the rear side of the photovoltaic surface scraper. Rope guiding rollers are provided in the top inclined plate near the rear side and the front side to guide the pulling rope. The pulling rope is connected to the front and rear sides of the photovoltaic surface scraper by two forked ropes. A layer of absorbent sponge is provided at the bottom of the photovoltaic surface scraper.

[0009] In some embodiments of the present invention, the dust-proof film is provided with a membrane clamping assembly at the top of the membrane movable groove extending into the side walls on both sides of the concave square groove. The membrane clamping assembly includes a pressure strip and a plurality of downward pressing cylinders. The plurality of downward pressing cylinders are installed at equal intervals on the top of the membrane movable groove and the cylinder shafts of the downward pressing cylinders are fixed on the pressure strip.

[0010] In some other embodiments of the present invention, frosted strips are provided on the upper and lower surfaces of both sides of the dustproof film, and the frosted strips are located in the active grooves of the film and do not block the upper surface of the photovoltaic module panel.

[0011] In some other embodiments of the present invention, the driving roller assembly includes a first driving roller group and a second driving roller group, the first driving roller group includes two first driving rods and two first driving motors, both ends of the two first driving rods are sleeved with first driving rollers, and the same end of the two first driving rods is provided with a first synchronous motor, and the second driving roller group includes two second driving rods and two second driving motors, both ends of the two second driving rods are sleeved with second driving rollers, and the same end of the two second driving rods is provided with a second synchronous motor;

[0012] The frosting strips on both sides of the dustproof film first pass through two opposite sets of first driving rollers, and then pass through two opposite sets of second driving rollers. Both the two sets of first driving rollers and the two sets of second driving rollers have an extrusion driving effect on the frosting strips.

[0013] In some other embodiments of the present invention, a partition plate is provided in the cavity of the front side plate, and the partition plate separates the liquid in the cleaning liquid cavity of the bottom plate from the liquid in the cavity of the front side plate. A filter screen is provided at the lower half of the partition plate, and the top of the partition plate extends to the rear position of the bottom of the driving roller combination. The partition plate is provided with a membrane perforation at the same horizontal position as the bottom of the cleaning liquid box, and the dust-proof film passes through the membrane perforation from the front side of the partition plate through the guide roller and is guided to the rear side of the partition plate, and finally enters the cleaning liquid cavity through the guide roller.

[0014] In other embodiments of the present invention, the base plate is provided with a water inlet pipe and a water outlet pipe on the two side walls of the front side, which are inserted into the bottom of the cavity on the front side of the partition plate, and the water inlet pipes and the water outlet pipes between adjacent photovoltaic component racks are connected in sequence through hoses.

[0015] In some other embodiments of the present invention, the height of the cavity in the rear side plate is not less than the length of the concave square groove.

[0016] In some other embodiments of the present invention, the cleaning nozzle is a diffusion nozzle, and the diffusion nozzle sprays water in a trumpet shape.

[0017] In other embodiments of the present invention, the dustproof film is a light-transmitting film resistant to light aging, and the light transmittance is above 95%.

[0018] In the present invention, a dustproof film is provided above the photovoltaic panel to block pollutants such as dust and sand. The dustproof film is rotated regularly for cleaning, and the clean dustproof film is re-laid on the photovoltaic panel. There is no need to clean the surface of the photovoltaic panel, and the cleaning is convenient. No manual cleaning is required, and automatic cleaning is available. The photovoltaic panel under the dustproof film is in a sealed state, and water vapor condenses. The photovoltaic panel demisting mechanism is used regularly to remove water droplets or fog layers to increase the surface gloss of the photovoltaic panel and improve the light absorption rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 This is a schematic structural diagram of a photovoltaic panel self-cleaning device proposed by the present invention.

[0021] Figure 2 for Figure 1 Enlarged structural diagram at A in the middle.

[0022] Figure 3 This is a schematic diagram of the cross-sectional structure of a photovoltaic panel self-cleaning device proposed by the present invention.

[0023] Figure 4 This is a schematic structural diagram of the photovoltaic panel demisting water mechanism proposed in the present invention.

[0024] Figure 5 This is a schematic cross-sectional structure diagram of the location of the photovoltaic panel demisting water mechanism proposed by the present invention.

[0025] Figure 6 This is a schematic structural diagram of the driving roller assembly proposed in the present invention.

[0026] Figure 7 This is a schematic diagram of the structure of the dust-proof film proposed by the present invention.

[0027] In the figure: 1. Photovoltaic module rack; 11. Water inlet pipe; 12. Water outlet pipe; 2. Cleaning pump; 21. Cleaning nozzle; 211. Cleaning nozzle; 3. Dust-proof film; 30. Support bar; 300. Frosting strip; 31. First drive roller; 311. First synchronous motor; 312. First drive rod; 32. Second drive roller; 321. Second synchronous motor; 4. Photovoltaic module board; 5. Photovoltaic surface scraper; 50. Water-absorbing sponge; 51. Limit rod; 52. Rope pull sleeve; 521. Scraper strip pulls the motor back and forth; 6. Pressure strip; 61. Down-pressing cylinder; 7. Cleaning liquid chamber. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0029] like Figure 1-7 As shown, a photovoltaic panel self-cleaning device includes a photovoltaic component frame 1, a dustproof film 3 and a film driving mechanism, a film cleaning mechanism and a photovoltaic panel demisting water mechanism;

[0030] The photovoltaic component rack includes a bottom plate, a rear side plate, a front side plate and a top inclined plate. The rear side and front side of the bottom plate are respectively vertically connected with the rear side plate and the front side plate. The rear side and front side of the top inclined plate are respectively connected with the top edges of the rear side plate and the front side plate. A cleaning liquid cavity 7 is provided in the bottom plate, and cavities are provided in the rear side plate and the front side plate. An inner concave square groove is provided on the upper surface of the top inclined plate, and a photovoltaic component panel 3 is provided at the bottom of the inner concave square groove. The cavities of the rear side plate and the front side plate are both connected to the inner concave square groove.

[0031] The bottom plate, rear side plate and front side plate are all thick plates with cavities, and detachable sealing covers are provided on the bottom plate, rear side plate and front side plate for later maintenance.

[0032] The film driving mechanism includes a guide roller assembly and a driving roller assembly. Guide rollers are provided inside the connection positions between the bottom plate and the rear side plate, the bottom plate and the front side plate, and the rear side plate and the top inclined plate. A driving roller assembly is provided inside the connection position between the front side plate and the top inclined plate. The dustproof film 3 is a conveyor belt-type dustproof film 3. The dustproof film 3 bypasses the guide rollers at three locations and passes through the driving roller assembly. The dustproof film 3 passes through the concave square groove and the two sides of the dustproof film 3 extend to the two side walls of the concave square groove so as to completely cover the photovoltaic module panel 3. The upper and lower side walls in the concave square groove are provided with two support bars 30 below the dustproof film 3.

[0033] The dust-proof membrane is turned by setting guide rollers at the corners. As shown in the figure, two guide rollers are set at the junction of the rear side plate and the top inclined plate for guidance, and one is set between the bottom plate and the rear side plate, and between the bottom plate and the front side plate (if a partition plate is set, the position of the partition plate is moved to use two). The dust-proof membrane is in the middle layer position in the cleaning liquid chamber 7 so that the cleaning liquid can submerge the dust-proof membrane and soak the dust-proof membrane for a short time to separate the dust that needs to be cleaned. When the dust-proof membrane is in the cavity in the rear side plate, it has a drainage effect. During operation, the dry and clean dust-proof membrane enters the concave square groove to replace the contaminated dust-proof membrane 3 segment.

[0034] The membrane cleaning mechanism includes a cleaning pump 2 and a cleaning membrane member, the cleaning membrane member includes a cleaning liquid box 21 and cleaning nozzles 211 distributed in a matrix on one side of the cleaning liquid box 21, the water inlet pipe of the cleaning pump 2 is inserted into the cleaning liquid cavity 7 in the bottom plate, the water outlet pipe of the cleaning pump 2 is inserted from the side wall of the front side plate to the inside and connected to the cleaning liquid box 21, the dustproof membrane 3 is led out from the driving roller assembly and then passes vertically downward from the front side of the cleaning nozzle 211 and then enters the cleaning liquid cavity 7 through the guide roller, and the cleaning pump 2 is installed on the outer upper surface of the bottom plate;

[0035] The bottom of the support bar 30 is not higher than the upper surface of the photovoltaic surface scraping strip 5 by 2-3 mm, and the support bar 30 will not be touched when pulled.

[0036] When cleaning is required, the dustproof film 3 is slowly rotated, and the surface of the dustproof film 3 is washed when passing the cleaning nozzle 211 to clean the dust, and then enters the cleaning liquid chamber 7 for immersion.

[0037] All electrical appliances above are powered by photovoltaic panels, and a control system is also provided, which centrally controls a row of photovoltaic panels and 1 electrical appliance.

[0038] The photovoltaic panel defogger mechanism includes a photovoltaic surface scraper 5 and a scraper strip pulling motor 521. Limiting strip grooves are symmetrically provided on the two side walls of the concave square groove, and limiting rods 51 are provided in the limiting strip grooves. The two ends of the photovoltaic surface scraper 5 are movably sleeved on the limiting rods 51. A rope pulling sleeve disk 52 is sleeved on the rotating shaft of the scraper strip pulling motor 521. The pull rope is connected from the middle position of the front side of the photovoltaic surface scraper 5, and then wrapped around the rope pulling sleeve disk 52 for a circle and then connected to the middle position of the rear side of the photovoltaic surface scraper 5. Rope guiding rollers are provided in the top inclined plate near the rear side and the front side to guide the pull rope. The pull rope is connected to the front and rear sides of the photovoltaic surface scraper 5 by two forked ropes. A layer of absorbent sponge 50 is provided at the bottom of the photovoltaic surface scraper 5.

[0039] The scraper strip pulls the motor 521 back and forth to rotate back and forth in a fixed circle, thereby moving the photovoltaic surface scraper strip 5 back and forth to scrape the surface of the photovoltaic panel and remove the water mist (the absorbent sponge 50 absorbs water).

[0040] The drive roller assembly and the scraper strip back and forth pulling motor 521 are arranged in a waterproof position.

[0041] The dust-proof membrane 3 is provided with a membrane clamping assembly at the top of the membrane movable groove extending to the side walls on both sides of the concave square groove. The membrane clamping assembly includes a pressure strip 6 and multiple downward pressing cylinders 61. The multiple downward pressing cylinders 61 are installed at equal intervals on the top of the membrane movable groove and the cylinder axes of the downward pressing cylinders 61 are fixed on the pressure strip 6.

[0042] When cleaning is completed and the fixed-length dust-proof film 3 is operated, the pressing cylinder 61 presses down the pressure strip 6 to seal the edge of the dust-proof film 3. When the dust-proof film 3 is operated, the pressure strip 6 is pulled up. Moreover, when the edge of the dust-proof film 3 is pressed, rainwater can only flow up and down the dust-proof film, and will not flow under the dust-proof film 3, and flow along the dust-proof film 3 to the cavity of the front side plate.

[0043] The upper and lower surfaces of both sides of the dustproof film 3 are provided with frosted strips 300, which are in the film activity groove and do not block the upper surface of the photovoltaic module board 4. The dustproof film 3 will not pull out the pressure strip 6 when pressed firmly and hit by rain.

[0044] The driving roller assembly includes a first driving roller group and a second driving roller group, the first driving roller group includes two first driving rods 312 and two first driving motors 311, both ends of the two first driving rods 312 are sleeved with first driving rollers 31, and the same end of the two first driving rods 312 is provided with a first synchronous motor 311, the second driving roller group includes two second driving rods and two second driving motors 321, both ends of the two second driving rods are sleeved with second driving rollers 32, and the same end of the two second driving rods is provided with a second synchronous motor 321;

[0045] The frosting strips 300 on both sides of the dustproof film 3 first pass through two opposite sets of first driving rollers 31, and then pass through two opposite sets of second driving rollers 32. Both the two sets of first driving rollers 31 and the two sets of second driving rollers 32 have an extrusion driving effect on the frosting strips 300.

[0046] The sanding strip 300 helps to drive the two sets of first driving rollers 31 and the two sets of the second driving rollers 32, and no driving roller is arranged in the middle, which facilitates the flow of water (rainwater passes through the driving rod position).

[0047] A partition is provided in the cavity of the front side plate, and the partition separates the liquid in the cleaning liquid cavity 7 of the bottom plate from the liquid in the cavity of the front side plate. A filter screen 80 is provided at the lower half of the partition. The top of the partition extends to the rear position of the bottom of the driving roller combination. The partition is provided with a membrane perforation at the same horizontal position as the bottom of the cleaning liquid box 21. The dustproof membrane 3 passes through the membrane perforation from the front side of the partition through the guide roller and is guided to the rear side of the partition plate, and finally enters the cleaning liquid cavity 7 through the guide roller.

[0048] During the flushing process, dust will fall down. When the dust-proof film is lightly cleaned, it will adhere to the dust-proof film 3 again. The cleaning liquid will be separated. The dust content at the immersion position is low and the adhesion amount will be very small.

[0049] The two side walls of the bottom plate are respectively provided with a water inlet pipe 11 and a water outlet pipe 12 which are inserted into the bottom of the cavity on the front side of the partition plate. The water inlet pipes 11 and the water outlet pipes 12 between adjacent photovoltaic component racks 1 are connected in sequence through hoses.

[0050] Centralized control is performed on one row, and the water discharged into each cleaning liquid cavity 7 is basically similar. After the cleaning is completed, soak for 10-20 minutes and then drain the water to prevent the soaking time from being too long.

[0051] The height of the cavity in the rear side plate is not less than the length of the inner concave square groove. Ensure that the vertical length is enough for replacement. Vertical placement will be more conducive to the dust on the membrane to flow down and be cleaner.

[0052] The cleaning nozzle 21 is a diffuser nozzle, which sprays water in a trumpet shape, spraying evenly and cleaning more thoroughly.

[0053] The dustproof film 3 is a light-resistant and aging-resistant translucent film with a light transmittance of more than 95%. It is similar to a plastic film, can be bent, has a thickness of 3-5mm, is 3-5 times thicker than a greenhouse film, but has a higher light transmittance. It is similar to a mobile phone film, but has sun-resistant or light-resistant materials added to the surface or inside, and is relatively soft.

[0054] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A photovoltaic panel self-cleaning device, characterized in that: It comprises a photovoltaic component frame (1), a dustproof film (3), a film driving mechanism, a film cleaning mechanism and a photovoltaic panel demisting water mechanism; The photovoltaic component frame comprises a bottom plate, a rear side plate, a front side plate and a top inclined plate, the rear side edge and the front side edge of the bottom plate are respectively vertically connected with the rear side plate and the front side plate, the rear side edge and the front side edge of the top inclined plate are respectively connected with the top edge of the rear side plate and the front side plate, the bottom plate is provided with a cleaning liquid cavity (7), the rear side plate and the front side plate are provided with cavities, the upper surface of the top inclined plate is provided with an inner concave square groove, the bottom of the inner concave square groove is provided with a photovoltaic component plate (3), and the cavities of the rear side plate and the front side plate are both connected with the inner concave square groove; The film driving mechanism comprises a guide roller assembly and a drive roller assembly. Guide rollers are arranged inside the connection positions between the bottom plate and the rear side plate, the bottom plate and the front side plate, and the rear side plate and the top inclined plate. A drive roller assembly is arranged inside the connection position between the front side plate and the top inclined plate. The dustproof film (3) is a conveyor belt-type dustproof film (3). The dustproof film (3) passes over the guide rollers at three locations and passes through the drive roller assembly. The dustproof film (3) passes through the concave square groove and the two sides of the dustproof film (3) extend into the two side walls of the concave square groove so as to completely cover the photovoltaic module panel (3). The upper and lower side walls of the concave square groove are provided with two support bars (30) below the dustproof film (3). The membrane cleaning mechanism comprises a cleaning pump (2) and a cleaning membrane member, the cleaning membrane member comprises a cleaning liquid box (21) and cleaning nozzles (211) arranged in a matrix on one side of the cleaning liquid box (21), the water inlet pipe of the cleaning pump (2) is inserted into the cleaning liquid cavity (7) in the bottom plate, the water outlet pipe of the cleaning pump (2) is inserted from the side wall of the front side plate to the inside and connected to the cleaning liquid box (21), the dustproof membrane (3) is led out from the driving roller assembly, passes vertically downward from the front side of the cleaning nozzle (211), and then enters the cleaning liquid cavity (7) through the guide roller, and the cleaning pump (2) is installed on the outer upper surface of the bottom plate; The photovoltaic panel demisting water mechanism comprises a photovoltaic surface scraper (5) and a scraper strip back and forth pulling motor (521), limit strip grooves are symmetrically provided on the two side walls of the inner concave square groove, and limit rods (51) are provided in the limit strip grooves, and the two ends of the photovoltaic surface scraper (5) are movably sleeved on the limit rods (51), and a rope pull sleeve disk (52) is sleeved on the rotating shaft of the scraper strip back and forth pulling motor (521), and the pull rope is connected from the middle position of the front side of the photovoltaic surface scraper (5) and then wound around the rope pull sleeve disk (52) for one circle and then connected to the middle position of the rear side of the photovoltaic surface scraper (5), and rope guide rollers are provided in the top inclined plate near the rear side and the front side to guide the pull rope, and the pull rope is connected to the front and rear sides of the photovoltaic surface scraper (5) by two forked ropes, and a layer of water-absorbing sponge (50) is provided at the bottom of the photovoltaic surface scraper (5).

2. A photovoltaic panel self-cleaning device according to claim 1, characterized in that: The dustproof film (3) is provided with a film clamping assembly at the top of the film movable groove extending to the side walls on both sides of the concave square groove. The film clamping assembly includes a pressure strip (6) and a plurality of downward pressure cylinders (61). The plurality of downward pressure cylinders (61) are installed at equal intervals on the top of the film movable groove and the cylinder shafts of the downward pressure cylinders (61) are fixed on the pressure strip (6).

3. A photovoltaic panel self-cleaning device according to claim 2, characterized in that: Frosted strips (300) are provided on the upper and lower surfaces of both sides of the dustproof film (3); the frosted strips (300) are located in the active grooves of the film and do not block the upper surface of the photovoltaic module board (4).

4. A photovoltaic panel self-cleaning device according to claim 4, characterized in that: The driving roller assembly comprises a first driving roller group and a second driving roller group, the first driving roller group comprises two first driving rods (312) and two first driving motors (311), both ends of the two first driving rods (312) are sleeved with first driving rollers (31), and the same end of the two first driving rods (312) is provided with a first synchronous motor (311), the second driving roller group comprises two second driving rods and two second driving motors (321), both ends of the two second driving rods are sleeved with second driving rollers (32), and the same end of the two second driving rods is provided with a second synchronous motor (321); The frosting strips (300) on both sides of the dustproof film (3) first pass through two opposite sets of first driving rollers (31), and then pass through two opposite sets of second driving rollers (32). Both the two sets of first driving rollers (31) and the two sets of second driving rollers (32) have an extrusion driving effect on the frosting strips (300).

5. The photovoltaic panel self-cleaning device according to claim 1, characterized in that: A partition is provided in the cavity of the front side plate, and the partition separates the liquid in the cleaning liquid cavity (7) of the bottom plate from the liquid in the cavity of the front side plate. A filter screen (80) is provided at the lower half of the partition. The top of the partition extends to the rear side of the bottom of the driving roller assembly. The partition is provided with a membrane perforation at the same horizontal position as the bottom of the cleaning liquid box (21). The dustproof membrane (3) passes through the membrane perforation from the front side of the partition through the guide roller and is then guided to the rear side of the partition, and finally enters the cleaning liquid cavity (7) through the guide roller.

6. A photovoltaic panel self-cleaning device according to claim 5, characterized in that: The bottom plate is provided with a water inlet pipe (11) and a water outlet pipe (12) on the two side walls of the front side, respectively, which are inserted into the bottom of the cavity on the front side of the partition plate, and the water inlet pipes (11) and the water outlet pipes (12) between adjacent photovoltaic component racks (1) are connected in sequence through hoses.

7. The photovoltaic panel self-cleaning device according to claim 1, characterized in that: The height of the cavity in the rear side plate is not less than the length of the inner concave square groove.

8. The photovoltaic panel self-cleaning device according to claim 1, characterized in that: The cleaning nozzle (21) is a diffusion nozzle, and the diffusion nozzle sprays water in a trumpet shape.

9. The photovoltaic panel self-cleaning device according to claim 1, characterized in that: The dustproof film (3) is a light-transmitting film that is resistant to light aging and has a light transmittance of more than 95%.

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