Photovoltaic system cleaning device

Abstract

The invention discloses a photovoltaic system cleaning device which comprises a photovoltaic panel unit and a support, the photovoltaic panel unit is borne on the support, the cleaning device comprises a cleaning frame, the cleaning frame is installed on the photovoltaic panel unit in a sliding mode and moves and operates along the photovoltaic panel unit, the cleaning frame is provided with a cleaning unit used for cleaning the photovoltaic panel unit, and the photovoltaic panel unit is arranged on the cleaning unit. The cleaning frame is further provided with a connecting assembly which continuously presses the cleaning unit downwards to enhance the friction force between the cleaning unit and the photovoltaic panel unit. The cleaning device has the advantages of simple structure, cost reduction and good cleaning effect.

Description

Technical Field

[0001] This invention relates to the field of solar photovoltaic power generation technology, and in particular to a photovoltaic system cleaning device. Background Technology

[0002] Solar energy is the energy produced by the continuous nuclear fusion reactions inside or on the surface of the sun, particularly in sunspots. Solar energy boasts advantages such as abundant resources, long lifespan, wide distribution, safety, cleanliness, and reliable technology. Because it can be converted into various other forms of energy, its applications are extremely broad. Obtaining electricity from solar energy requires photovoltaic conversion using solar cells.

[0003] Currently, many industrial and commercial rooftops are equipped with photovoltaic (PV) power generation systems. These systems require regular cleaning to remove surface dust and dirt to prevent impact on their power output. Existing cleaning robots, with one robot cleaning the entire PV module coverage area, take 3 to 5 days for a single cleaning cycle, which is very inefficient. Traditional cleaning methods are infrequent (cleaning only once every few months), and the longer the cleaning interval, the more dust and dirt accumulate, leading to a greater reduction in PV module power output (in some areas, power output decreased by 50% or more a month after cleaning). Furthermore, the longer the cleaning interval, the more difficult it is to remove dust and dirt. Therefore, ensuring thorough cleaning requires a higher level of robot intelligence, resulting in higher prices (ranging from several thousand to tens of thousands of yuan per robot). Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a photovoltaic system cleaning device that is simple in structure, reduces costs, and has a good cleaning effect.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A photovoltaic system cleaning device is disclosed. The photovoltaic system includes a photovoltaic panel unit and a support frame. The photovoltaic panel unit is supported on the support frame. The cleaning device includes a cleaning frame that slides on the photovoltaic panel unit and moves along the photovoltaic panel unit. The cleaning frame is provided with a cleaning unit for cleaning the photovoltaic panel unit. The cleaning frame is also provided with a connecting component that continuously presses the cleaning unit downward to enhance the friction between the cleaning unit and the photovoltaic panel unit.

[0006] As a further improvement to the above technical solution: The cleaning unit includes at least one brush head, each of which is arranged along the length of the cleaning frame and connected to the cleaning frame via a connecting component.

[0007] The connecting assembly includes a guide rod bracket, a guide rod, and an elastic element. The guide rod bracket is fixedly mounted on the cleaning rack, the guide rod passes through the guide rod bracket, and the lower end of the guide rod extends out of the guide rod bracket and connects to the brush head. The elastic element is disposed on the guide rod and continuously forces the guide rod to move downward along the guide rod bracket.

[0008] The elastic element includes a tension spring, the upper end of the guide rod extends out of the guide rod bracket, the tension spring is sleeved on the upper end of the guide rod, and one end of the tension spring is connected to the guide rod and the other end is connected to the guide rod bracket.

[0009] The connecting assembly includes a guide rod bracket, a guide rod, and an elastic element. The guide rod bracket is fixedly mounted on the cleaning frame, the guide rod passes through the guide rod bracket, and the lower end of the guide rod extends out of the guide rod bracket and connects to the brush head. The elastic element is disposed on the brush head and abuts against the bottom of the cleaning frame. The elastic element forces the guide rod to move downward along the guide rod bracket.

[0010] The elastic element includes a base plate, two connecting rods, two coil springs, and a top plate. The base plate is fixedly mounted on the top of the brush head. The two connecting rods are movably hinged between the base plate and the top plate, and the top plate abuts against the cleaning frame. The two coil springs are distributed on the two connecting rods and force the connecting rods to extend so that the top plate moves upward.

[0011] The elastic element includes a tension spring, a base plate, two connecting rods, and a top plate. The base plate is fixedly mounted on the top of the brush head. The two connecting rods are movably hinged between the base plate and the top plate, and the top plate abuts against the cleaning frame. The tension spring is connected between the two connecting rods and forces the two connecting rods to extend so that the top plate moves upward.

[0012] The connecting assembly includes a guide rod and an elastic element. The guide rod passes through the cleaning frame, and its lower end is connected to the brush head. The elastic element is disposed on the guide rod and abuts against the brush head, and the elastic element forces the guide rod to move downward.

[0013] The elastic element includes a spring, which is sleeved on the guide rod and forces the guide rod to move downward.

[0014] The cleaning unit includes at least one brush head, each of which is arranged along the length of the cleaning frame and connected to the cleaning frame via an elastic element.

[0015] The elastic element includes a spring, with its upper end connected to the bottom of the cleaning rack and its other end connected to a brush head.

[0016] The elastic element includes a spring rod, the upper end of which is connected to the bottom of the cleaning rack, and the other end of which is connected to a brush head.

[0017] The photovoltaic panel unit includes multiple photovoltaic panels, which are arranged in a horizontal and vertical row on the support. The length direction of the photovoltaic panel is defined as the horizontal direction and the width direction of the photovoltaic panel is defined as the vertical direction. The cleaning rack moves in the horizontal or vertical direction for operation.

[0018] The cleaning rack is equipped with rollers that slide in connection with the photovoltaic panel, and a water spray pipe is also installed on the cleaning rack.

[0019] The cleaning rack is equipped with cleaning units at both the front and rear ends, and the water spray pipe is located between the two cleaning units.

[0020] The cleaning rack is equipped with water spray pipes at both the front and rear ends, and the cleaning unit is located between the two water spray pipes.

[0021] Compared with the prior art, the advantages of the present invention are as follows: This invention uses a cleaning rack that moves back and forth in a simple linear motion on the photovoltaic panel unit to perform the cleaning operation. The cleaning unit cleans the photovoltaic panel unit, which greatly simplifies the structure of the cleaning device and reduces costs. By setting up connecting components to continuously apply downward pressure to the cleaning unit, the friction between the cleaning unit and the photovoltaic panel unit is enhanced, thereby improving the cleaning ability of the cleaning unit. Attached Figure Description

[0022] Figure 1 This is a schematic diagram (three-dimensional view) of the overall structure of Embodiment 1 of the present invention.

[0023] Figure 2 This is a schematic diagram (front view) of the overall structure of Embodiment 1 of the present invention.

[0024] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0025] Figure 4 This is a schematic diagram of the cleaning rack structure in Embodiment 2 of the present invention.

[0026] Figure 5 This is a schematic diagram (three-dimensional view) of the overall structure of Embodiment 3 of the present invention.

[0027] Figure 6 This is a schematic diagram (front view) of the overall structure of Embodiment 4 of the present invention.

[0028] Figure 7 yes Figure 6 Enlarged view of section B in the middle.

[0029] Figure 8 This is a schematic diagram of the elastic element structure of Embodiment 4 of the present invention.

[0030] Figure 9 This is a schematic diagram of the elastic element structure of Embodiment 5 of the present invention.

[0031] Figure 10 This is a schematic diagram (top view) of the overall structure of Embodiment 6 of the present invention.

[0032] Figure 11This is a schematic diagram of the elastic element structure of Embodiment 7 of the present invention.

[0033] Figure 12 This is a schematic diagram of the elastic element structure of Embodiment 8 of the present invention.

[0034] The labels in the diagram represent: 1. Photovoltaic panel unit; 11. Photovoltaic panel; 2. Bracket; 3. Cleaning rack; 31. Roller; 32. Water spray pipe; 4. Cleaning unit; 41. Brush head; 5. Connecting assembly; 51. Guide rod bracket; 52. Guide rod; 53. Elastic element; 531. Tension spring; 532. Base plate; 533. Connecting rod; 534. Coil spring; 535. Top plate; 536. Spring; 537. Elastic rod. Detailed Implementation

[0035] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] Example 1: like Figures 1 to 3 As shown, a first embodiment of the photovoltaic system cleaning device of the present invention is as follows: Figure 1 and Figure 2 As shown, the photovoltaic system cleaning device of this embodiment includes a photovoltaic panel unit 1 and a support 2. The photovoltaic panel unit 1 is supported on the support 2. The cleaning device includes a cleaning frame 3, which slides on the photovoltaic panel unit 1 and moves along the photovoltaic panel unit 1. The cleaning frame 3 is provided with a cleaning unit 4 for cleaning the photovoltaic panel unit 1. The cleaning frame 3 is also provided with a connecting component 5 that continuously presses the cleaning unit 4 downward to enhance the friction between the cleaning unit 4 and the photovoltaic panel unit 1. This invention uses the cleaning frame 3 to perform simple linear reciprocating motion on the photovoltaic panel unit 1 for movement. The cleaning unit 4 cleans the photovoltaic panel unit 1, which greatly simplifies the structure of the cleaning device and reduces costs. By setting the connecting component 5 to continuously apply downward pressure to the cleaning unit 4, the friction between the cleaning unit 4 and the photovoltaic panel unit 1 is enhanced, thereby improving the cleaning ability of the cleaning unit 4.

[0037] In this embodiment, the cleaning unit 4 includes at least one brush head 41, which is arranged along the length of the cleaning frame 3 and connected to the cleaning frame 3 via a connecting component 5. Due to production quality and installation accuracy issues, the panels composed of each photovoltaic panel unit 1 are not flat. By setting multiple brush heads 41 to clean independently, the problem of incomplete cleaning caused by uneven panels is reduced. Its structure is simple and ingeniously designed.

[0038] In this embodiment, the connecting component 5 includes a guide rod bracket 51, a guide rod 52, and an elastic element 53. The guide rod bracket 51 is fixedly mounted on the cleaning frame 3. The guide rod 52 passes through the guide rod bracket 51, with its lower end extending out of the guide rod bracket 51 and connecting to the brush head 41. The elastic element 53 is disposed on the guide rod 52 and continuously forces the guide rod 52 to move downward along the guide rod bracket 51. In this structure, the guide rod bracket 51 is U-shaped, which allows the guide rod 52 to move more smoothly within the guide rod bracket 2. The elastic element 53 applies downward pressure to the guide rod 52, continuously pressing the brush head 41 against the photovoltaic panel unit 1 to increase friction. Its structure is simple and ingeniously designed.

[0039] In this embodiment, the elastic element 53 includes a tension spring 531. The upper end of the guide rod 52 extends out of the guide rod bracket 51. The tension spring 531 is sleeved on the upper end of the guide rod 52, with one end connected to the guide rod 52 and the other end connected to the guide rod bracket 51. In this structure, the elastic tension of the tension spring 531 drives the guide rod 52 to move downward, thereby keeping the brush head 41 in close contact with the photovoltaic panel unit 1, ensuring the cleaning effect.

[0040] In this embodiment, the photovoltaic panel unit 1 includes multiple photovoltaic panels 11, which are arranged in a horizontal and vertical row on the support 2. The length direction of the photovoltaic panel 11 is defined as the horizontal direction and the width direction of the photovoltaic panel 11 is defined as the vertical direction. The cleaning rack 3 moves and operates in the horizontal direction.

[0041] In this embodiment, the cleaning rack 3 is equipped with rollers 31 that are slidably connected to the photovoltaic panel 11, and the cleaning rack 3 is also equipped with a water spray pipe 32. In this structure, the rollers 31 facilitate movement, and the water spray pipe 32 is provided for rinsing and cleaning. Together with the brush head 41, the cleaning effect is better.

[0042] In this embodiment, cleaning units 4 are provided at both the front and rear ends of the cleaning rack 3, and a water spray pipe 32 is positioned between the two cleaning units 4. This structure, with two sets of cleaning units 4, achieves better cleaning results.

[0043] Example 2: like Figure 4 As shown, the second embodiment of the photovoltaic system cleaning device of the present invention is basically the same as that of embodiment 1, except that: In this embodiment, the connecting component 5 includes a guide rod 52 and an elastic element 53. The guide rod 52 passes through the cleaning frame 3, and its lower end is connected to the brush head 41. The elastic element 53 is disposed on the guide rod 52 and abuts against the brush head 41. The elastic element 53 forces the guide rod 52 to move downward. The elastic element 53 includes a spring 536, which is sleeved on the guide rod 52 and forces the guide rod 52 to move downward. In this structure, the guide rod 52 is configured as a bolt, and the spring 536 is sleeved on the bolt. Both ends abut against the cleaning frame 3 and the brush head 41, respectively. The elastic potential energy released by the spring 536 forces the bolt to move downward, thereby tightly fitting the brush head 41 with the photovoltaic panel unit 1 and ensuring the cleaning effect. Its design is ingenious.

[0044] Example 3: like Figure 5 As shown, the third embodiment of the photovoltaic system cleaning device of the present invention is basically the same as that of embodiment 1, except that: In this embodiment, water spray pipes 32 are provided at both the front and rear ends of the cleaning frame 3, and the cleaning unit 4 is located between the two water spray pipes 32. With this arrangement, the water spray pipe 32 at the rear end can flush away the wastewater generated by the water spray pipe 32 at the front end, further improving the cleaning effect.

[0045] Example 4: like Figures 6 to 8 As shown, the fourth embodiment of the photovoltaic system cleaning device of the present invention is basically the same as that of embodiment 1, except that: In this embodiment, the connecting component 5 includes a guide rod bracket 51, a guide rod 52, and an elastic element 53. The guide rod bracket 51 is fixedly mounted on the cleaning frame 3. The guide rod 52 passes through the guide rod bracket 51, and the lower end of the guide rod 52 extends out of the guide rod bracket 51 and connects to the brush head 51. The elastic element 53 is disposed on the brush head 41 and abuts against the bottom of the cleaning frame 3. The elastic element 53 forces the guide rod 52 to move downward along the guide rod bracket 51. The elastic element 53 includes a base plate 532, two connecting rods 533, two coil springs 534, and a top plate 535. The base plate 532 is fixedly mounted on the top of the brush head 51. The two connecting rods 533 are movably hinged between the base plate 532 and the top plate 535, and the top plate 535 abuts against the cleaning frame 3. The two coil springs 534 are distributed on the two connecting rods 533 and force the connecting rods 533 to extend so that the top plate 535 moves upward. In this structure, the connecting rod 533 extends under the action of the coil spring 534, applying an upward force to the top plate 535. Under the reaction force, the brush head 41 moves downward, thereby keeping the brush head 41 in close contact with the photovoltaic panel unit 1. Its structure is simple and its design is ingenious.

[0046] Example 5: like Figure 9 As shown, the fifth embodiment of the photovoltaic system cleaning device of the present invention is basically the same as that of embodiment 3, except that: In this embodiment, the elastic element 53 includes a tension spring 531, a base plate 532, two connecting rods 533, and a top plate 535. The base plate 532 is fixedly mounted on the top of the brush head 51. The two connecting rods 533 are movably hinged between the base plate 532 and the top plate 535, and the top plate 535 abuts against the cleaning frame 3. The tension spring 531 connects between the two connecting rods 533 and forces the two connecting rods 533 to extend so that the top plate 535 moves upward. In this structure, the connecting rods 533 extend upward under the action of the tension spring 531, applying an upward force to the top plate 535. Under the action of the reaction force, the brush head 41 moves downward, thereby keeping the brush head 41 in close contact with the photovoltaic panel unit 1 and enhancing the friction. Its design is ingenious.

[0047] Example 6: like Figure 10 As shown, the sixth embodiment of the photovoltaic system cleaning device of the present invention is basically the same as that of embodiment 1, except that: In this embodiment, the cleaning rack 3 moves longitudinally. In the specific implementation process, taking into account the size of the water spray rack 3 and the length and width of the photovoltaic panel unit 1, the smallest size water spray rack 3 is selected to ensure that the water spray rack 3 can cover the entire photovoltaic panel unit 1 during its linear movement, and the moving direction of the water spray rack 3 is determined accordingly.

[0048] Example 7: like Figure 11 As shown, the seventh embodiment of the photovoltaic system cleaning device of the present invention is basically the same as that of embodiment 1, except that: In this embodiment, the cleaning unit 4 includes at least one brush head 41. Each brush head 41 is arranged along the length of the cleaning frame 3 and connected to the cleaning frame 3 via an elastic element 53. The elastic element 53 includes a spring 536, with its upper end connected to the bottom of the cleaning frame 3 and its other end connected to the brush head 41. In this structure, the brush head 41 is connected to the cleaning frame 3 by the spring 536, which can continuously apply downward pressure to enhance the friction between the brush head 41 and the photovoltaic panel unit 1. Furthermore, when passing through uneven areas on the photovoltaic panel unit 1, the spring 536 can adaptively bend to ensure that the brush head 41 passes smoothly.

[0049] Example 8: like Figure 12 As shown, the eighth embodiment of the photovoltaic system cleaning device of the present invention is basically the same as that of embodiment 7, except that: In this embodiment, the elastic element 53 includes a spring rod 537, the upper end of which is connected to the bottom of the cleaning frame 3, and the other end is connected to a brush head 41. In this structure, the brush head 41 is connected to the cleaning frame 3 by the spring rod 537, which can continuously apply downward pressure to enhance the friction between the brush head 41 and the photovoltaic panel unit 1. When passing through uneven areas on the photovoltaic panel unit 1, the spring rod 537 can adaptively bend to ensure that the brush head 41 passes smoothly.

[0050] While the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the invention. Any person skilled in the art can make many possible variations and modifications to the technical solutions of the present invention, or modify them into equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the scope of the present invention, should fall within the protection scope of the present invention.

Claims

1. A photovoltaic system cleaning device, the photovoltaic system comprising a photovoltaic panel unit (1) and a support (2), the photovoltaic panel unit (1) being supported on the support (2), characterized in that: The cleaning device includes a cleaning frame (3), which is slidably mounted on the photovoltaic panel unit (1) and moves along the photovoltaic panel unit (1). The cleaning frame (3) is provided with a cleaning unit (4) for cleaning the photovoltaic panel unit (1). The cleaning frame (3) is also provided with a connecting component (5) that continuously presses the cleaning unit (4) downward to enhance the friction between the cleaning unit (4) and the photovoltaic panel unit (1).

2. The photovoltaic system cleaning device according to claim 1, characterized in that: The cleaning unit (4) includes at least one brush head (41), each of which is arranged along the length of the cleaning frame (3) and connected to the cleaning frame (3) via a connecting component (5).

3. The photovoltaic system cleaning device according to claim 2, characterized in that: The connecting assembly (5) includes a guide rod bracket (51), a guide rod (52), and an elastic element (53). The guide rod bracket (51) is fixed on the cleaning frame (3). The guide rod (52) passes through the guide rod bracket (51). The lower end of the guide rod (52) extends out of the guide rod bracket (41) and connects to the brush head (41). The elastic element (53) is disposed on the guide rod (52) and continuously forces the guide rod (52) to move downward along the guide rod bracket (51).

4. The photovoltaic system cleaning device according to claim 3, characterized in that: The elastic element (53) includes a tension spring (531), the upper end of the guide rod (52) extends out of the guide rod bracket (51), the tension spring (531) is sleeved on the upper end of the guide rod (52), and one end of it is connected to the guide rod (52) and the other end is connected to the guide rod bracket (51).

5. The photovoltaic system cleaning device according to claim 2, characterized in that: The connecting assembly (5) includes a guide rod bracket (51), a guide rod (52), and an elastic element (53). The guide rod bracket (51) is fixed on the cleaning frame (3). The guide rod (52) passes through the guide rod bracket (51). The lower end of the guide rod (52) extends out of the guide rod bracket (51) and connects with the brush head (41). The elastic element (53) is disposed on the brush head (41) and abuts against the bottom of the cleaning frame (3). The elastic element (53) forces the guide rod (52) to move downward along the guide rod bracket (51).

6. The photovoltaic system cleaning device according to claim 5, characterized in that: The elastic element (53) includes a base plate (532), two connecting rods (533), two coil springs (534), and a top plate (535). The base plate (532) is fixedly mounted on the top of the brush head (41). The two connecting rods (533) are movably hinged between the base plate (532) and the top plate (535), and the top plate (535) abuts against the cleaning frame (3). The two coil springs (534) are distributed on the two connecting rods (533) and force the connecting rods (533) to stretch so that the top plate (535) moves upward.

7. The photovoltaic system cleaning device according to claim 5, characterized in that: The elastic element (53) includes a tension spring (531), a base plate (532), two connecting rods (533) and a top plate (535). The base plate (532) is fixedly mounted on the top of the brush head (41). The two connecting rods (533) are movably hinged between the base plate (532) and the top plate (535), and the top plate (535) abuts against the cleaning frame (3). The tension spring (531) is connected between the two connecting rods (533) and forces the two connecting rods (533) to extend so that the top plate (535) moves upward.

8. The photovoltaic system cleaning device according to claim 2, characterized in that: The connecting assembly (5) includes a guide rod (52) and an elastic element (53). The guide rod (52) is mounted on the cleaning frame (3). The lower end of the guide rod (52) is connected to the brush head (41). The elastic element (53) is mounted on the guide rod (52) and abuts against the brush head (41). The elastic element (53) forces the guide rod (52) to move downward.

9. The photovoltaic system cleaning device according to claim 8, characterized in that: The elastic element (53) includes a spring (536) which is sleeved on the guide rod (52) and forces the guide rod (52) to move downward.

10. The photovoltaic system cleaning device according to claim 1, characterized in that: The cleaning unit (4) includes at least one brush head (41), each of the brush heads (41) being arranged along the length of the cleaning frame (3) and connected to the cleaning frame (3) via an elastic element (53).

11. The photovoltaic system cleaning device according to claim 10, characterized in that: The elastic element (53) includes a spring (536), the upper end of which is connected to the bottom of the cleaning rack (3) and the other end is connected to a brush head (41).

12. The photovoltaic system cleaning device according to claim 10, characterized in that: The elastic element (53) includes a spring rod (537), the upper end of which is connected to the bottom of the cleaning rack (3), and the other end is connected to a brush head (41).

13. The photovoltaic system cleaning device according to any one of claims 1 to 12, characterized in that: The photovoltaic panel unit (1) includes multiple photovoltaic panels (11), each of which is arranged in a horizontal and vertical row on the support (2). The length direction of the photovoltaic panel (11) is defined as the horizontal direction and the width direction of the photovoltaic panel (11) is defined as the vertical direction. The cleaning rack (3) moves along the horizontal or vertical direction.

14. The photovoltaic system cleaning device according to claim 13, characterized in that: The cleaning rack (3) is equipped with rollers (31) that are slidably connected to the photovoltaic panel (11), and the cleaning rack (3) is also equipped with a water spray pipe (32).

15. The photovoltaic system cleaning device according to claim 14, characterized in that: The cleaning rack (3) is equipped with cleaning units (4) at both the front and rear ends, and the water spray pipe (32) is located between the two cleaning units (4).

16. The photovoltaic system cleaning device according to claim 15, characterized in that: The cleaning rack (3) is equipped with water spray pipes (32) at both the front and rear ends, and the cleaning unit (4) is located between the two water spray pipes (32).

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