A solar photovoltaic panel for a photovoltaic power station
By driving the solar panels to turn over and cleaning up dust by combining bellows and dust rollers, the impact of sandstorms in desert areas on photovoltaic power plants is solved, improving power generation efficiency and extending equipment life.
Patent Information
- Application Number
- CN202310027418.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-01-09
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2043-01-09
AI Technical Summary
Sandstorms in desert areas cause solar power panels to cover wind and sand, affecting power generation efficiency, and it is difficult for the existing technology to effectively clean up delicate sand and dust.
A solar photovoltaic panel of a photovoltaic power station was designed to drive the solar panels to turn over by motors and use gravity to clean up dust. Combined with the combination of bellows and dust rollers, automatic cleaning is achieved.
Effectively clean up dust on solar panels, improve power generation efficiency, extend equipment life, and enhance resistance to bad weather.
Smart Images

Figure CN115940762B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of photovoltaic equipment, in particular to a solar photovoltaic panel in a photovoltaic power station. Background Art
[0002] At present, deserts are often used as ideal locations for photovoltaic power stations due to their cheap land rental and abundant sunlight resources. The only drawback is that some deserts are prone to regular geological disasters such as sandstorms, and wind and sand cover the solar panels, causing the power generation effect to deteriorate or even interrupt power generation. Although some solar panels are set at an angle to allow some sand and dust to fall, the effect is not ideal. Since the sand in the desert is relatively fine and soft, it is easy to stubbornly adhere to the solar panels, and the effect of self-cleaning through gravity is limited. Summary of the Invention
[0003] In view of the problems in the prior art, the present invention provides a solar photovoltaic panel for a photovoltaic power station.
[0004] The technical solution adopted by the present invention to solve its technical problems is: a photovoltaic power station solar photovoltaic panel, including a support frame, a support leg is installed around the bottom end of the support frame, and a reinforcing rod is fixedly connected between the support legs. A solar panel is provided inside the support frame, and a connecting shaft is connected between the solar panel and the support frame. A first reducer is installed on one side of the support frame, and the first reducer drives one of the connecting shafts. A first motor is installed on one side of the first reducer, and the first motor is connected to the input end of the first reducer.
[0005] Specifically, the connecting shaft is rotatably connected to the support frame, and the connecting shaft is fixedly connected to the solar panel. The first motor increases the rotational torque through the first reduction gearbox to drive the solar panel to deflect and flip.
[0006] Specifically, the bottom side of the support frame is fixedly connected with a plurality of pin sleeves, and the inside of the pin sleeve is slidably connected with a latch, and the latch is semicircular on the side facing the solar panel, and a slide is slidably connected between the two pin sleeves on the same side, and the bottom end of the support frame is fixedly connected with a rod sleeve, and the slide is slidably connected to the rod sleeve, and a frustum-shaped protrusion is provided on the slide, and a fixing bar is provided on one side of the latch, and the fixing bar is fixedly connected to the bottom side of the support frame, and a limiting rod is fixedly connected to the latch, and the limiting rod is slidably connected to the fixing bar, and a first spring is wound on the limiting rod, and the first spring is in contact between the latch and the fixing bar, and the plurality of latches work together to limit the solar panel.
[0007] Specifically, the bottom end of the support frame is rotatably connected to the first rotating shaft, and both ends of the first rotating shaft are fixedly connected to a first gear. One end of the skateboard is fixedly connected to a gear rod, and the first gear and the gear rod are meshed. The bottom end of the support frame is installed with a second reducer and a second motor, the second reducer drives the first rotating shaft, and the second motor drives the second reducer.
[0008] Specifically, a track bar is fixedly connected to the bottom end of each side of the support frame, a mounting plate is fixedly connected between the ends of the two track bars, a movable plate is slidably connected between the two track bars, the internal rotation of the track bar is connected to a first screw rod, the first screw rod is threadedly connected to the mounting plate, and the end of the first screw rod is fixedly connected to a first bevel gear.
[0009] Specifically, the internal rotation of the mounting plate is connected to a second rotating shaft, and the two ends of the second rotating shaft are respectively fixedly connected to a second bevel tooth, the second bevel tooth and the first bevel tooth are meshed with each other, and a third reducer and a third motor are installed on the mounting plate, and the third motor drives the second rotating shaft to rotate through the third reducer, and the rotation directions of the two first screw rods are opposite.
[0010] Specifically, a bellows is installed on the movable plate, a blower is installed at the bottom end of the bellows, and a plurality of air outlets are provided at the top end of the bellows, and the plurality of air outlets are arranged linearly.
[0011] Specifically, two second limiting shafts are provided at the top of the bellows, a plurality of third connecting rods are rotatably connected between the two second limiting shafts, a plurality of duster rollers are slidably connected to the second limiting shaft, the duster rollers are in contact with the bottom side of the solar panel, a second connecting rod is rotatably connected to the second limiting shaft, a first connecting rod is provided at the bottom end of the second connecting rod, a first limiting shaft is provided between the first connecting rod and the second connecting rod, the first limiting shaft is fixedly connected to the first connecting rod, and a torsion spring is wound around the first limiting shaft.
[0012] Specifically, one end of the torsion spring is fixedly connected to the second limiting shaft and the other end is fixedly connected to the second connecting rod. The bottom end of the first connecting rod is rotatably connected to a fixed block, and the fixed block is fixedly connected to both sides of the bellows.
[0013] The beneficial effects of the present invention are:
[0014] (1) The photovoltaic power station solar panel of the present invention is conveniently driven by a first motor to deflect and turn over the solar panel, so that the power-generating and dusty side is directly parallel to the ground, and gravity is used to clear most of the wind and sand.
[0015] (2) The solar photovoltaic panel of a photovoltaic power station described in the present invention mainly has a plurality of pins that limit the position of the solar panel, so that the solar panel can be stabilized during normal power generation and when turned over to clean dust, and can effectively resist and cope with severe weather.
[0016] (3) The photovoltaic panel of a photovoltaic power station described in the present invention has a thin layer of dust on its power generation side that affects the power generation efficiency after the solar panel is turned over. The third motor is started to drive the movable panel to move. The bellows blows the bottom side of the solar panel during movement. Then, multiple dust rollers contact and roll to clean the solar panel. The two cooperate with each other, thereby greatly improving the cleaning effect of the solar panel. The bellows and dust rollers are always protected by the solar panel, reducing wind and sun exposure, greatly extending the service life, and can extend the service life of the solar panel. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The present invention will be further described below with reference to the accompanying drawings and examples.
[0018] Figure 1 A schematic diagram of the overall structure of a preferred embodiment of a solar photovoltaic panel in a photovoltaic power station provided by the present invention;
[0019] Figure 2 Schematic diagram of flipping over a solar panel;
[0020] Figure 3 for Figure 1 The structural diagram of the first motor and the first reduction gearbox shown;
[0021] Figure 4 for Figure 3 The schematic diagram of the structure of the slide plate, latch and its accessories shown;
[0022] Figure 5 for Figure 1 The schematic diagram of the structure of the track bar and the mounting plate and their accessories shown;
[0023] Figure 6 for Figure 5 The schematic diagram of the structure of the bellows and its accessories shown;
[0024] Figure 7 for Figure 6 The schematic diagram of the structure of the duster roller and its accessories shown;
[0025] Figure 8 Schematic diagram of the structure without solar panels.
[0026] Figure: 1, support frame; 2, solar panel; 3, support leg; 4, reinforcement rod; 5, connecting shaft; 6, first reduction gearbox; 7, first motor; 8, slide plate; 9, rod sleeve; 10, latch; 11, pin sleeve; 12, bump; 13, fixing bar; 14, limit rod; 15, first spring; 16, gear rod; 17, first rotating shaft; 18, first gear; 19, second reduction gearbox; 20, second motor; 21, track bar ; 22. Mounting plate; 23. Movable plate; 24. First screw rod; 25. First bevel gear; 26. Second rotating shaft; 27. Second bevel gear; 28. Third reduction gearbox; 29. Third motor; 30. Bellows; 31. Fan; 32. Air outlet; 33. First connecting rod; 34. Second connecting rod; 35. First limiting shaft; 36. Torsion spring; 37. Second limiting shaft; 38. Third connecting rod; 39. Duster roller; 40. Fixed block. DETAILED DESCRIPTION
[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.
[0028] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.
[0029] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.
[0030] like Figure 1 - Figure 8As shown, a photovoltaic power station solar photovoltaic panel according to the present invention includes a support frame 1, wherein a support leg 3 is respectively installed around the bottom end of the support frame 1, and a reinforcing rod 4 is fixedly connected between the support legs 3. A solar panel 2 is arranged inside the support frame 1, and a connecting shaft 5 is connected between the solar panel 2 and the support frame 1. A first reduction gearbox 6 is installed on one side of the support frame 1, and the first reduction gearbox 6 drives one of the connecting shafts 5. A first motor 7 is installed on one side of the first reduction gearbox 6, and the first motor 7 is connected to the input end of the first reduction gearbox 6. The connecting shaft 5 is rotatably connected to the support frame 1, and the connecting shaft 5 is fixedly connected to the solar panel 2. The first motor 7 increases the torque through the first reduction gearbox 6 to drive the solar panel 2 to deflect and flip over; when it is necessary to clean the dust on the solar panel 2, it is first necessary to release the limiting protection function of the multiple latches 10, and then start the first motor 7. The first motor 7 drives the connecting shaft 5 to rotate through the first reduction gearbox 6, thereby driving the solar panel 2 to rotate and flip over. After flipping over, the dust accumulated on the solar panel 2 falls directly, and most of the dust is cleaned up by gravity.
[0031] Specifically, the bottom side of the support frame 1 is fixedly connected with a plurality of pin sleeves 11, and the interior of the pin sleeve 11 is slidably connected with a latch 10, and the latch 10 is semicircular on the side facing the solar panel 2. A slide plate 8 is slidably connected between the two pin sleeves 11 on the same side, and the bottom end of the support frame 1 is fixedly connected with a rod sleeve 9, and the slide plate 8 is slidably connected to the rod sleeve 9. A frustum-shaped protrusion 12 is provided on the slide plate 8, and a fixing bar 13 is provided on one side of the latch 10, and the fixing bar 13 is fixedly connected to the bottom side of the support frame 1. A limit rod 14 is fixedly connected to the latch 10, and the limit rod 14 slides The first gear 18 is fixedly connected to the first rotating shaft 17, and the first gear 18 is meshed with the gear rod 16. The bottom end of the support frame 1 is provided with a second reduction gear 19 and a second motor 20. The second reduction gear 19 drives the first rotating shaft 17, and the first gear 18 is meshed with the gear rod 16. The second motor 20 drives the second reduction gearbox 19; when operating to release the limit protection of the latch 10, it is only necessary to start the second motor 20, and the second motor 20 drives the first shaft 17 to rotate through the second reduction gearbox 19, and the first shaft 17 drives the first gears 18 at both ends, and the first gears 18 engage the gear rod 16 and pull the slide 8, and the slide 8 drags the protrusion 12 to act on the latch 10, and the protrusion 12 resists the latch 10, so that the latch 10 moves toward the fixing bar 13, and then the plurality of latches 10 are recessed into the support frame 1. The bottom end no longer plays a limiting role on the solar panel 2. After the solar panel 2 is turned over, when the latch 10 needs to be reset, it is only necessary to move the slide plate 8 to reset it to the initial state. The first spring 15 pushes the latch 10 to be re-extended during the reset and plays the limiting role again. When the solar panel 2 is generating electricity normally, the latch 10 can stabilize the solar panel 2. When the solar panel 2 is turned over to unload dust, the latch 10 is repeatedly extended and plays the role of temporary fixation again. Later, when the dusting roller 39 and the bellows 30 act on the solar panel 2, they play a role in suppressing shaking.
[0032] Specifically, the bottom ends of both sides of the support frame 1 are respectively fixedly connected with a track bar 21, a mounting plate 22 is fixedly connected between the ends of the two track bars 21, and a movable plate 23 is slidably connected between the two track bars 21. The internal rotation of the track bar 21 is connected to a first screw rod 24, the first screw rod 24 is threadedly connected to the mounting plate 22, the end of the first screw rod 24 is fixedly connected to a first bevel gear 25, the internal rotation of the mounting plate 22 is connected to a second rotating shaft 26, and the two ends of the second rotating shaft 26 are respectively fixedly connected with a second bevel gear 27, the second bevel gear 27 is meshed with the first bevel gear 25, and a third reduction gear box 28 and a third motor 29 are installed on the mounting plate 22. The third motor 29 drives the second rotating shaft 26 to rotate through the third reduction gearbox 28, and the two first screw rods 24 rotate in opposite directions. After most of the dust on the solar panel 2 is removed, in order to improve the surface cleanliness of the solar panel 2, the third motor 29 can be started. The third motor 29 drives the second rotating shaft 26 to rotate through the third reduction gearbox 28. After the first bevel teeth 25 and the second bevel teeth 27 are engaged with each other, the two first screw rods 24 rotate synchronously, thereby simultaneously pushing the movable plate 23 to move along the track bar 21. The bellows 30 is installed on the movable plate 23, that is, pushing the bellows 30 to move back and forth at the bottom end of the solar panel 2 to complete the cleaning operation.
[0033] Specifically, a bellows 30 is installed on the movable plate 23, a blower 31 is installed at the bottom end of the bellows 30, and a plurality of air outlets 32 are provided at the top end of the bellows 30, and the plurality of air outlets 32 are arranged linearly; when the blower 31 is started, wind is transmitted into the interior of the bellows 30, and then discharged from the contact with the solar panel 2 by each air outlet 32, and the floating dust is blown away by the wind.
[0034] Specifically, two second limiting shafts 37 are provided at the top of the bellows 30, and a plurality of third connecting rods 38 are rotatably connected between the two second limiting shafts 37, and a plurality of duster rollers 39 are slidably connected to the second limiting shaft 37, and the duster rollers 39 are in contact with the bottom side of the solar panel 2, and the second connecting rod 34 is rotatably connected to the second limiting shaft 37, and the bottom end of the second connecting rod 34 is provided with a first connecting rod 33, and a first limiting shaft 35 is provided between the first connecting rod 33 and the second connecting rod 34, and the first limiting shaft 35 is fixedly connected to the first connecting rod 33, and a torsion spring 36 is wound around the first limiting shaft 35, and one end of the torsion spring 36 is fixedly connected to the second limiting shaft 37 and the other end is fixedly connected to the second connecting rod 34, and the bottom end of the first connecting rod 33 is rotatably connected to the fixed block 40, so The fixed block 40 is fixedly connected to both sides of the bellows 30; the movement of the bellows 30 drives multiple groups of the first connecting rod 33, the second connecting rod 34 and the third connecting rod 38 to move, thereby driving the two second limiting shafts 37 to shift positions, and each of the duster rollers 39 and the side wall of the solar panel 2 rolls to dust off, and cooperates with air blowing to completely clean up the floating dust and improve the cleanliness of the solar panel 2. The first limiting shaft 35 and the torsion spring 36 are reset between the first connecting rod 33 and the second connecting rod 34, so that the first connecting rod 33 and the second connecting rod 34 are always in the expanded position, so that the duster roller 39 has a movable buffering effect within a certain range, and always maintains effective contact with the solar panel 2.
[0035] When the present invention is in use, when it is necessary to clean the dust on the solar panel 2, it is first necessary to release the limiting protection of the multiple latches 10, and then start the first motor 7. The first motor 7 drives the connecting shaft 5 to rotate through the first reduction gear 6, thereby driving the solar panel 2 to rotate and turn over. After turning over, the dust accumulated on the solar panel 2 falls directly, and most of the dust is cleaned up by gravity; when operating to release the limiting protection of the latch 10, it is only necessary to start the second motor 20. The second motor 20 drives the first rotating shaft 17 to rotate through the second reduction gear 19. The first rotating shaft 17 drives the first gears 18 at both ends. The first gear 18 engages the gear rod 16 and pulls the slide plate 8, and the slide plate 8 drags The protrusion 12 acts on the latch 10, and the protrusion 12 resists the latch 10, causing the latch 10 to move toward the fixing bar 13, so that the multiple latches 10 are recessed into the bottom end of the supporting frame 1 and no longer play a limiting role on the solar panel 2. After the solar panel 2 is turned over, when the latch 10 needs to be reset, it is only necessary to move the slide plate 8 to reset to the initial state, and the first spring 15 pushes the latch 10 to extend again during the reset, and play the limiting role again; when the solar panel 2 is generating electricity normally, the latch 10 can stabilize the solar panel 2. When the solar panel 2 is turned over to unload dust, the latch 10 is repeatedly extended to play a temporary fixing role again. Later, the dusting roller 39 and the bellows 30 act on the solar panel 2, it plays a role in suppressing shaking; after the solar panel 2 has removed most of the dust, in order to improve the surface cleanliness of the solar panel 2, the third motor 29 can be started, and the third motor 29 drives the second rotating shaft 26 to rotate through the third reduction gear 28. After the first bevel gear 25 and the second bevel gear 27 are engaged with each other, the two first screw rods 24 rotate synchronously, thereby simultaneously pushing the movable plate 23 to move along the track bar 21, and the bellows 30 is installed on the movable plate 23, that is, pushing the bellows 30 to move back and forth at the bottom end of the solar panel 2 to complete the cleaning operation; starting the fan 31, the wind force is transmitted to the inside of the bellows 30, and then discharged from each air outlet 32 and the solar panel 2 Contact, blowing the dust by wind; the movement of the bellows 30 drives multiple groups of first connecting rods 33, second connecting rods 34 and third connecting rods 38 to move, thereby driving the two second limiting shafts 37 to shift positions, and each duster roller 39 rolls with the side wall of the solar panel 2 to shake off the dust, and cooperates with the air blowing to completely clean up the dust and improve the cleanliness of the solar panel 2. The first limiting shaft 35 and the torsion spring 36 are reset between the first connecting rod 33 and the second connecting rod 34, so that the first connecting rod 33 and the second connecting rod 34 are always in the expanded position, so that the duster roller 39 has a movable buffering effect within a certain range, and keeps in effective contact with the solar panel 2 at all times.
[0036] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.
[0037] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.
Claims
1. A solar photovoltaic panel for a photovoltaic power station, characterized in that: The invention comprises a support frame (1), wherein a support leg (3) is respectively installed around the bottom end of the support frame (1), and a reinforcing rod (4) is fixedly connected between the support legs (3); a solar panel (2) is provided inside the support frame (1), and a connecting shaft (5) is connected between the solar panel (2) and the support frame (1); a first reduction gearbox (6) is installed on one side of the support frame (1), and the first reduction gearbox (6) drives one of the connecting shafts (5); a first motor (7) is installed on one side of the first reduction gearbox (6), and the first motor (7) is connected to the input end of the first reduction gearbox (6); the connecting shaft (5) is rotatably connected to the support frame (1), and the connecting shaft (5) is fixedly connected to the support frame (1). The solar panel (2) is connected to the first motor (7) through the first reduction gearbox (6) to increase the torque and drive the solar panel (2) to deflect and flip; the bottom side of the support frame (1) is fixedly connected to a plurality of pin sleeves (11), the interior of the pin sleeves (11) is slidably connected to a latch (10), the latch (10) is semicircular on the side facing the solar panel (2), a slide plate (8) is slidably connected between the two pin sleeves (11) on the same side, the bottom end of the support frame (1) is fixedly connected to a rod sleeve (9), the slide plate (8) is slidably connected to the rod sleeve (9), a frustum-shaped protrusion (12) is provided on the slide plate (8), a fixing bar (13) is provided on one side of the latch (10), and the fixing bar ( 13) is fixedly connected to the bottom side of the support frame (1), the latch (10) is fixedly connected to a limiting rod (14), the limiting rod (14) is slidably connected to the fixing bar (13), a first spring (15) is wound around the limiting rod (14), the first spring (15) is in contact between the latch (10) and the fixing bar (13), and a plurality of the latches (10) work together to limit the solar panel (2); the bottom end of the support frame (1) is rotatably connected to a first rotating shaft (17), both ends of the first rotating shaft (17) are fixedly connected to a first gear (18), one end of the slide plate (8) is fixedly connected to a gear rod (16), the first gear (18) and the gear rod (16) are meshed, A second reduction gearbox (19) and a second motor (20) are installed at the bottom end of the support frame (1), the second reduction gearbox (19) drives the first rotating shaft (17), and the second motor (20) drives the second reduction gearbox (19); a track bar (21) is fixedly connected to the bottom ends of both sides of the support frame (1), a mounting plate (22) is fixedly connected between the ends of the two track bars (21), a movable plate (23) is slidably connected between the two track bars (21), a first screw rod (24) is rotatably connected inside the track bar (21), the first screw rod (24) is threadedly connected to the mounting plate (22), and a first bevel gear (25) is fixedly connected to the end of the first screw rod (24);The interior of the mounting plate (22) is rotatably connected to a second rotating shaft (26), and the two ends of the second rotating shaft (26) are respectively fixedly connected to a second bevel gear (27), and the second bevel gear (27) and the first bevel gear (25) are meshed. A third reduction gear box (28) and a third motor (29) are installed on the mounting plate (22), and the third motor (29) drives the second rotating shaft (26) to rotate through the third reduction gear box (28). The rotation directions of the two first screw rods (24) are opposite. A bellows (30) is installed on the movable plate (23), and a fan (31) is installed at the bottom end of the bellows (30). A plurality of air outlets (32) are provided at the top end of the bellows (30), and the plurality of air outlets (32) are linearly arranged.
2. A photovoltaic power station solar photovoltaic panel according to claim 1, characterized in that: Two second limiting shafts (37) are provided at the top of the bellows (30), and a plurality of third connecting rods (38) are rotatably connected between the two second limiting shafts (37). A plurality of duster rollers (39) are slidably connected to the second limiting shaft (37), and the duster rollers (39) are in contact with the bottom side of the solar panel (2). A second connecting rod (34) is rotatably connected to the second limiting shaft (37), and a first connecting rod (33) is provided at the bottom end of the second connecting rod (34). A first limiting shaft (35) is provided between the first connecting rod (33) and the second connecting rod (34), and the first limiting shaft (35) is fixedly connected to the first connecting rod (33). A torsion spring (36) is wound around the first limiting shaft (35).
3. A photovoltaic power station solar photovoltaic panel according to claim 2, characterized in that: One end of the torsion spring (36) is fixedly connected to the second limiting shaft (37) and the other end is fixedly connected to the second connecting rod (34). The bottom end of the first connecting rod (33) is rotatably connected to a fixed block (40). The fixed block (40) is fixedly connected to both sides of the bellows (30).
Citation Information
Patent Citations
Solar photovoltaic panel cleaning device and cleaning method thereof
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Household photovoltaic power generation control equipment
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