Photovoltaic panel self-cleaning device

Abstract

The utility model discloses a photovoltaic panel self-cleaning device, which comprises a photovoltaic panel, a winding shaft, an unwinding shaft, a winding shaft box and a driving part, and is characterized in that the photovoltaic panel is covered with a thin film which is made of a high-transmittance material; the winding shaft and the unwinding shaft are respectively arranged on two opposite sides of the photovoltaic panel, and two sides of the film are respectively wound on the winding shaft and the unwinding shaft; the reel boxes comprise the first reel box and the second reel box, the first reel box is used for containing the winding shaft, the second reel box is used for containing the unwinding shaft, and the opposite sides of the first reel box and the second reel box are provided with outlets for a film to enter and exit. The driving part is connected with the reel and used for driving the winding shaft to rotate to wind the thin film or driving the unwinding shaft to unwind the thin film. The reel can be automatically controlled, and is high in efficiency and convenient to use, so that the cleaning and light transmission effects of the surface of the photovoltaic panel can be ensured for a long time, the photovoltaic panel keeps good power generation efficiency, and meanwhile, water resources do not need to be consumed for cleaning the photovoltaic panel.

Description

Technical Field

[0001] This specification relates to the technical field of solar photovoltaics, and in particular to a self-cleaning device for photovoltaic panels. Background Art

[0002] After installing photovoltaic panels outdoors, they need to be cleaned regularly, especially in dusty northern regions. Failure to clean the panels promptly can lead to poor light transmission and affect power generation efficiency.

[0003] Conventional methods include manual cleaning, which is suitable for household photovoltaic power generation but is relatively inefficient. Another method involves installing water nozzles on the top of the photovoltaic panels to regularly spray water to clean dust from the panels. This method is suitable for large-scale photovoltaic power generation. However, this method consumes a large amount of water resources, especially for photovoltaic power generation projects installed in deserts, where it is a significant waste of water resources.

[0004] For example, Chinese patent CN116996007A discloses a photovoltaic panel cleaning device, which is connected to a fixed frame of a photovoltaic panel device, and includes: a connecting bracket, a cleaning pipe, a stroke drive mechanism and a cleaning medium storage device; the connecting bracket is arranged on both sides of the fixed frame of the photovoltaic panel device; the connecting bracket is provided with a slide rail component consistent with the inclination angle of the photovoltaic panel of the photovoltaic panel device, and the slide rail component is provided with a slider component adapted thereto; the two ends of the cleaning pipe are respectively connected to the slider components on the corresponding sides; a plurality of cleaning nozzle components are provided on the middle tube body; the stroke drive mechanism can drive the slider component to reciprocate along the slide rail component; the cleaning pipe and the cleaning nozzle component can be driven by the stroke drive mechanism to repeatedly clean the photovoltaic panel; and the photovoltaic panel is targetedly cleaned by a variety of cleaning media in the cleaning medium storage device to ensure the cleaning effect, and the structure is simple, easy to implement, low cost, and more convenient for promotion and application.

[0005] In summary, after photovoltaic panels are installed outdoors, they need to be cleaned regularly, but manual cleaning is inefficient and using a nozzle to clean them wastes water resources. Utility Model Content

[0006] One or more embodiments of this specification provide a photovoltaic panel self-cleaning device for solving the following technical problem: after photovoltaic panels are installed outdoors, they need to be cleaned regularly, but manual cleaning is inefficient and using a nozzle for cleaning wastes water resources.

[0007] One or more embodiments of this specification adopt the following technical solutions:

[0008] The utility model provides a photovoltaic panel self-cleaning device, which includes:

[0009] Photovoltaic panels, with a film covering the top of the photovoltaic panels;

[0010] A take-up reel and a pay-off reel, the take-up reel and the pay-off reel are respectively arranged on opposite sides of the photovoltaic panel, and both sides of the film are respectively wound around the take-up reel and the pay-off reel;

[0011] A reel box, the reel box includes a first reel box and a second reel box, the first reel box is used to accommodate the take-up reel, the second reel box is used to accommodate the pay-off reel, and an outlet for the film to enter and exit is arranged on one side of the first reel box and the second reel box that face each other;

[0012] A driving member, the driving member is connected to the take-up reel and is used to drive the take-up reel to rotate to wind up the film or drive the pay-off reel to unwind the film;

[0013] The film is made of a high-transparency material.

[0014] In some embodiments, a dust-blocking strip for blocking dust is arranged along the width direction at the outlet of the first reel box.

[0015] In some embodiments, the dust-blocking strip is wrapped around the upper edge and / or the lower edge of the outlet and is used to partially block the gap at the outlet.

[0016] In some embodiments, the thickness of the dust-blocking strip is set according to the size of the dust particles to be blocked.

[0017] In some embodiments, a deceleration assembly for regulating the film unwinding speed is arranged along the width direction at the outlet of the second reel box.

[0018] In some embodiments, the deceleration assembly includes a deceleration rubber plate and a pressing plate. The deceleration rubber plate is fixed on the edge of the outlet, and the pressing plate is in clearance fit with the deceleration rubber plate.

[0019] In some embodiments, the surface of the deceleration rubber plate that cooperates with the pressing plate is a wavy surface, and the surface of the pressing plate that cooperates with the deceleration rubber plate is an arc surface.

[0020] In some embodiments, openings are respectively formed on both sides of the pressing plate along the length direction of the film.

[0021] In some embodiments, the deceleration assembly further includes a spring and a pull rod. The spring is used to press the pressing plate to make the pressing plate cooperate with the deceleration rubber plate, and the pull rod is used to pull the pressing plate in a direction away from the deceleration rubber plate.

[0022] In some embodiments, chutes are respectively arranged on both sides of the photovoltaic panel along the width direction, and convex strips are arranged on the reel box and are used to cooperate with the chutes to detachably mount the reel box on both sides of the photovoltaic panel.

[0023] The utility model covers a high-transparency film above a photovoltaic panel to block dust falling on the photovoltaic panel. At the same time, a driving member drives a reel to rotate to drive the film to rotate. The driving member is started regularly to wind the film with dust onto the take-up reel, and at the same time, the clean film in the pay-off reel is re-covered above the photovoltaic panel. The take-up reel and the pay-off reel are respectively accommodated in a first reel box and a second reel box to protect the take-up reel and the pay-off reel from being damaged due to outdoor environmental factors, and at the same time prevent the clean film wound on the pay-off reel from being covered with dust. The reel of the present application can be automatically controlled, with high efficiency and convenient use, so as to ensure the cleanliness and light transmission effect of the surface of the photovoltaic panel for a long time, keep the photovoltaic panel in good power generation efficiency, and at the same time, there is no need to consume water resources to clean the photovoltaic panel. Description of the Drawings

[0024] In order to more clearly illustrate the technical solutions in the embodiments of this specification or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in this specification. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. In the drawings:

[0025] Figure 1 It is a top view schematic diagram of the photovoltaic panel self-cleaning device provided by the embodiment of the present utility model;

[0026] Figure 2 It is a side view schematic diagram of the photovoltaic panel self-cleaning device provided by the embodiment of the present utility model.

[0027] The reference numerals are as follows:

[0028] 1. Film; 2. Photovoltaic panel; 3. Driving member; 4. Second reel box; 41. Pay-off reel; 5. Pressing plate; 6. Deceleration rubber plate; 7. Spring; 8. Pull rod; 9. Dust-proof strip; 10. First reel box; 101. Take-up reel. Detailed Embodiments

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0030] The following description is provided to enable any person skilled in the art to make and use the present application. In the following description, details are set forth for purposes of explanation. It should be understood that those of ordinary skill in the art can recognize that the present application can be implemented without the use of these specific details. In other instances, well-known structures and processes are not elaborated in detail to avoid obscuring the description of the present application with unnecessary details. Therefore, the present application is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.

[0031] For ease of description, in the embodiments of the present application, it is assumed that the photovoltaic panel 2 has a rectangular structure, and the winding shaft 101 and the unwinding shaft 41 are arranged on both sides of the photovoltaic panel 2 along the length direction. It can be understood that the width of the photovoltaic panel 2 is equal to the width of the thin film 1, or the width of the photovoltaic panel 2 is less than the width of the thin film 1, and the lengths of the winding shaft 101 and the unwinding shaft 41 are adapted to the width of the photovoltaic panel 2.

[0032] Reference Figure 1 and Figure 2 The present utility model provides a self-cleaning device for a photovoltaic panel 2, the device comprising: a photovoltaic panel 2, a winding shaft 101 and an unwinding shaft 41, a reel box, and a driving member 3. A thin film 1 is covered above the photovoltaic panel 2, and the thin film 1 is made of a highly light-transmissive material; the winding shaft 101 and the unwinding shaft 41 are respectively arranged on two opposite sides of the photovoltaic panel 2, and two sides of the thin film 1 are respectively wound around the winding shaft 101 and the unwinding shaft 41; the reel box includes a first reel box 10 and a second reel box 4. The first reel box 10 is used for accommodating the winding shaft 101, the second reel box 4 is used for accommodating the unwinding shaft 41, and an outlet for the thin film 1 to enter and exit is provided on one side of the first reel box 10 and the second reel box 4 that face each other; the driving member 3 is connected to the winding shaft 101 and is used for driving the winding shaft 101 to rotate to wind the thin film 1 or driving the unwinding shaft 41 to unwind the thin film 1.

[0033] The present utility model covers a highly light-transmissive thin film 1 above the photovoltaic panel 2 to block dust falling on the photovoltaic panel 2. At the same time, the driving member 3 drives the reel to rotate to drive the thin film 1 to rotate. The driving member 3 is started regularly to wind the thin film 1 with dust into the winding shaft 101, and at the same time, the clean thin film 1 in the unwinding shaft 41 is re-covered above the photovoltaic panel 2. The winding shaft 101 and the unwinding shaft 41 are respectively accommodated in the first reel box 10 and the second reel box 4 to protect the winding shaft 101 and the unwinding shaft 41 from being damaged due to outdoor environmental factors, and at the same time prevent dust from falling on the clean thin film 1 wound on the unwinding shaft 41. The reel of the present application can be automatically controlled, with high efficiency and convenient use, so as to ensure the cleanliness and light-transmitting effect of the surface of the photovoltaic panel 2 for a long time, keep the photovoltaic panel 2 in good power generation efficiency, and at the same time do not require water resources to clean the photovoltaic panel 2.

[0034] Among them, a motor can be used to drive the winding shaft 101 and the unwinding shaft 41 respectively. In order to be more energy-saving and environmentally friendly and reduce the cost of laying additional circuits, the photovoltaic panel 2 can be directly connected to the power supply of the motor. It can be understood that in order to wind the film 1 with dust onto the winding shaft 101 and at the same time cover the clean film 1 in the unwinding shaft 41 above the photovoltaic panel 2 again, the winding shaft 101 and the unwinding shaft 41 rotate simultaneously and the rotation speeds are kept consistent. It is also possible to only use the motor to drive the winding shaft 101 or the unwinding shaft 41, and the other shaft can be driven by the former.

[0035] In some embodiments, a dust-blocking strip 9 for blocking dust is arranged along the width direction at the outlet of the first reel box 10. When winding the film 1 with dust, large particles of dust are blocked outside the reel box to prevent the dust from falling into the structure of the driving member 3, which may cause the driving member 3 to jam. In addition, large particles of dust, fallen leaves, etc. falling on the film 1 will cause a difference between the speed of the film 1 during winding and the predetermined speed, so that the winding and unwinding of the film 1 cannot be synchronized. If the winding speed is less than the unwinding speed, then the film 1 will sag and may touch the surface of the photovoltaic panel 2. The sagging film 1 affects the absorption of sunlight by the photovoltaic panel 2 and may even cause frictional damage to the surface of the photovoltaic panel 2. If the winding speed is greater than the unwinding speed, the film 1 will be taut, stretched and deformed or even damaged, the light transmittance will change, which will affect the absorption of sunlight by the photovoltaic panel 2 and may even cause dust to fall onto the photovoltaic panel 2 from the damaged part.

[0036] In some embodiments, the dust-blocking strip 9 is wrapped around the upper edge and / or the lower edge of the outlet for partially blocking the gap at the outlet. The dust-blocking strip 9 can be made of an elastic material, such as rubber, and at the same time, the surface of the dust-blocking strip 9 needs to be smoothed to avoid scratching the film 1.

[0037] It can be understood that the thickness of the dust-blocking strip 9 is set according to the size of the dust particles to be blocked. The thickness of the gap blocked by the dust-blocking strip 9 allows the film 1 to pass freely, but does not allow the dust particles to be blocked to pass through.

[0038] In some embodiments, a deceleration assembly for regulating the unwinding speed of the film 1 is arranged along the width direction at the outlet of the second reel box 4. The deceleration assembly can ensure the smooth movement of the film 1, especially when the unwinding shaft 41 starts, it can reduce the fluctuation of the film 1 during movement.

[0039] In some embodiments, the deceleration assembly includes a deceleration rubber plate 6 and a pressing plate 5. The deceleration rubber plate 6 is fixed to the edge of the outlet, and the pressing plate 5 is in clearance fit with the deceleration rubber plate 6. The pressing plate 5 and the deceleration rubber plate 6 are strip-shaped, and the strip-shaped pressing plate 5 and deceleration rubber plate 6 clamp the film 1 along the width direction. The film 1 passes through the gap between the pressing plate 5 and the deceleration rubber plate 6, and the film 1 will contact the pressing plate 5 and the deceleration rubber plate 6 during movement, thereby achieving the effect of deceleration.

[0040] In some embodiments, the surface of the deceleration rubber plate 6 that cooperates with the pressing plate 5 is a wavy surface, and the surface of the pressing plate 5 that cooperates with the deceleration rubber plate 6 is an arc surface. The wavy surface can reduce the fluctuation of the film 1 during movement. The arc-shaped smooth surface of the pressing plate 5 can avoid damaging the film 1.

[0041] In some embodiments, openings are respectively formed on both sides of the pressing plate 5 along the length direction of the film 1. The openings on both sides can accommodate the deformation of the pressing plate 5. When the film 1 is suddenly unrolled along the length direction, the film 1 will drive the pressing plate 5 to deform in the advancing direction. Since there are openings in the advancing direction of the pressing plate 5 along the length direction, the pressing plate 5 is relatively easy to deform when driven by the film 1, so that it can avoid the film 1 and will not damage the film 1.

[0042] In some embodiments, the deceleration assembly further includes a spring 7 and a pull rod 8. The spring 7 is used to press against the pressing plate 5 so that the pressing plate 5 cooperates with the deceleration rubber plate 6, and the pull rod 8 is used to pull the pressing plate 5 in the direction away from the deceleration rubber plate 6. When it is necessary to replace the reel in the reel box or remove the film 1, the pull rod 8 can be pulled to pull the pressing plate 5 in the direction away from the deceleration rubber plate 6, and then the film 1 between the pressing plate 5 and the deceleration rubber plate 6 can be taken out.

[0043] In some embodiments, chutes are respectively arranged on both sides of the photovoltaic panel 2 along the width direction, and the reel box is provided with protrusions for cooperating with the chutes to detachably mount the reel box on both sides of the photovoltaic panel 2. The chute and protrusion structures are simple and the cost is low. The reel box is detachable, which is convenient for replacing and repairing the reel and the internal driving member 3 structure.

[0044] In summary, the utility model can achieve the following beneficial effects:

[0045] 1. A high-transparency film 1 is covered above the photovoltaic panel 2 to block the dust falling on the photovoltaic panel 2. At the same time, the driving member 3 drives the reel to rotate to drive the film 1 to rotate. The driving member 3 is started regularly to wind the film 1 with dust into the take-up reel 101, and at the same time, the clean film 1 in the pay-off reel 41 is re-covered above the photovoltaic panel 2. It can ensure the cleanliness of the surface of the photovoltaic panel 2, enable the photovoltaic panel 2 to achieve the maximum power generation efficiency, and at the same time, it is not necessary to consume water resources to clean the photovoltaic panel 2.

[0046] 2. The take-up reel 101 and the pay-off reel 41 are respectively accommodated in the first reel box 10 and the second reel box 4 to protect the take-up reel 101 and the pay-off reel 41 from being damaged due to outdoor environmental factors, and at the same time prevent the clean film 1 wound on the pay-off reel 41 from being covered with dust. The cost is low and it can be used for a long time.

[0047] 3. A deceleration assembly and a dust blocking strip 9 are arranged at the outlet of the reel box, which can ensure the smooth movement of the film 1 and can also block large-particle dust outside the reel box.

[0048] The structure is simple, and it can be directly installed on existing photovoltaic modules. The installation and transformation are easy with low costs. Moreover, it has a high degree of cleaning automation, high efficiency, and is convenient to use.

[0049] The above has introduced in detail a self-cleaning device for a photovoltaic panel 2 provided by an embodiment of the present application. Specific examples are used herein to elaborate on the principle and embodiments of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application. At the same time, for those skilled in the art, according to the idea of the present application, there will be changes in the specific embodiments and application scopes. In summary, the content of this specification should not be construed as a limitation to the present application.

[0050] The above are only one or more embodiments of this specification and are not used to limit this specification. For those skilled in the art, one or more embodiments of this specification can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of one or more embodiments of this specification shall be included within the scope of the claims of this specification.

Claims

1. A self-cleaning device for a photovoltaic panel, characterized in that, Including: A photovoltaic panel (2), with a film (1) covering above the photovoltaic panel (2); A winding shaft (101) and a unwinding shaft (41), the winding shaft (101) and the unwinding shaft (41) are respectively arranged on opposite sides of the photovoltaic panel (2), and two sides of the film (1) are respectively wound around the winding shaft (101) and the unwinding shaft (41); A reel box, the reel box includes a first reel box (10) and a second reel box (4), the first reel box (10) is used to accommodate the winding shaft (101), the second reel box (4) is used to accommodate the unwinding shaft (41), and an outlet for the film (1) to enter and exit is arranged on one side where the first reel box (10) and the second reel box (4) face each other; A driving member (3), the driving member (3) is connected to the winding shaft (101), and is used to drive the winding shaft (101) to rotate to wind the film (1) or drive the unwinding shaft (41) to unwind the film (1); The film (1) is made of a high-transparency material.

2. The self-cleaning device for a photovoltaic panel according to claim 1, wherein A dust-blocking strip (9) for blocking dust is arranged along the width direction at the outlet of the first reel box (10).

3. The self-cleaning device for a photovoltaic panel according to claim 2, characterized in that, The dust-blocking strip (9) wraps around the upper edge and / or the lower edge of the outlet, and is used to partially block the gap at the outlet.

4. A self-cleaning device for a photovoltaic panel according to claim 3, characterized in that, The thickness of the dust-blocking strip (9) is set according to the size of the dust particles to be blocked.

5. The self-cleaning device for a photovoltaic panel according to claim 1, wherein A deceleration assembly for regulating the unwinding speed of the film (1) is arranged along the width direction at the outlet of the second reel box (4).

6. The self-cleaning device for a photovoltaic panel according to claim 5, characterized in that, The deceleration assembly includes a deceleration rubber plate (6) and a pressing plate, the deceleration rubber plate (6) is fixed on the edge of the outlet, and the pressing plate is in clearance fit with the deceleration rubber plate (6).

7. The self-cleaning device for a photovoltaic panel according to claim 6, wherein The surface of the deceleration rubber plate (6) that cooperates with the pressing plate is a wavy surface, and the surface of the pressing plate that cooperates with the deceleration rubber plate (6) is an arc surface.

8. The self-cleaning device for a photovoltaic panel according to claim 7, characterized in that, Openings are respectively formed on both sides of the pressing plate along the length direction of the film (1).

9. The self-cleaning device for a photovoltaic panel according to claim 6, characterized in that, The deceleration assembly further includes a spring (7) and a pull rod (8), the spring (7) is used to press the pressing plate so that the pressing plate cooperates with the deceleration rubber plate (6), and the pull rod (8) is used to pull the pressing plate in a direction away from the deceleration rubber plate (6).

10. A photovoltaic panel self-cleaning device according to any one of claims 1 to 9, characterized in that, Chutes are respectively arranged on both sides of the photovoltaic panel (2) along the width direction, and convex strips are arranged on the reel box, which are used to cooperate with the chutes to detachably install the reel box on both sides of the photovoltaic panel (2).

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