Automatic cleaning device for photovoltaic panel

Abstract

The invention relates to the technical field of photovoltaic panel cleaning, in particular to a photovoltaic panel automatic cleaning device which comprises a supporting rod and a driving assembly which are arranged on the upper side and the lower side of a photovoltaic panel respectively, and the driving assembly is used for driving the supporting rod to reciprocate in the direction parallel to the photovoltaic panel. The support rod is matched with an elastic sheet arranged on the support rod to scrape and wash the photovoltaic panel; the driving assembly comprises a connecting plate, and the end part of the supporting rod is elastically and slidably connected with the connecting plate, so that the supporting rod can be close to or far away from the photovoltaic panel in a reciprocating manner through a wavy strip during reciprocating motion; a plurality of scraping parts are formed at the bottom end of the elastic sheet through cracks; the supporting rod is slidably sleeved with a sliding sleeve, the elastic piece is fixedly arranged on the sliding sleeve, a pushing piece is hinged between the sliding sleeve and the connecting plate, and when the supporting rod moves from the high position portion of the wavy strip to the low position portion of the wavy strip, the elastic piece is fixedly arranged on the sliding sleeve. The device can remove stubborn impurities, guarantee the cleanness of the surface of the photovoltaic panel, and ensure the power generation efficiency of the photovoltaic panel.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic panel cleaning, in particular to an automatic photovoltaic panel cleaning device. Background Art

[0002] Photovoltaic power generation is a technology that uses the photovoltaic effect at the interface of semiconductors to directly convert sunlight into electrical energy. It primarily consists of three components: solar panels (modules), controllers, and inverters. Solar cells are connected in series and then packaged and protected to form large-area solar modules. Combined with components such as power controllers, these form photovoltaic power generation devices.

[0003] Since photovoltaic panels are in outdoor environments for a long time, dust will fall on their surfaces, which affects the power generation efficiency of the photovoltaic panels. Therefore, the photovoltaic panels need to be cleaned regularly, such as by manual flushing or cleaning by automated equipment. For example, the Chinese utility model patent with announcement number CN219893280U discloses a solar panel that is easy to clean. The solar panel that is easy to clean includes a supporting body assembly, a water storage and supply assembly, and a rainwater collection assembly. The supporting body assembly includes a support frame, a solar photovoltaic panel, a first electric push rod, and a cleaning part. The solar photovoltaic panel is arranged on the top of the supporting frame, and the cleaning part is located above the solar photovoltaic panel. The first electric push rod is installed on the top of the supporting frame, and the output rod end of the first electric push rod is connected to the cleaning part; the water storage and supply assembly supplies water to the cleaning part.

[0004] Although the technical solution provided by the above patent can clean the surface of the photovoltaic panel, the actual cleaning effect is not good. Specifically, this technical solution only uses the cooperation between the first electric push rod 130 and the cleaning part 140 to scrub the surface of the photovoltaic panel, which can only clean floating dust, and has poor cleaning effect on impurities such as dust adhering to the surface of the photovoltaic panel; moreover, the cleaning device in this technical solution takes up a large space and is not suitable for scenarios where multiple photovoltaic panels generate electricity together. Summary of the Invention

[0005] The purpose of the present invention is to provide an automatic cleaning device for photovoltaic panels to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A photovoltaic panel automatic cleaning device includes support rods and a drive assembly respectively provided on the upper and lower sides of the photovoltaic panel, wherein the drive assembly is used to drive the support rods to reciprocate in a direction parallel to the photovoltaic panel to cooperate with elastic sheets provided on the support rods to scrape and clean the photovoltaic panel;

[0008] The driving assembly includes a connecting plate, and the end of the support rod is elastically slidably connected to the connecting plate, so that the support rod can reciprocate towards or away from the photovoltaic panel through the wave strip during reciprocating motion;

[0009] The bottom end of the elastic sheet is formed with a plurality of scraping portions through cracks;

[0010] The sliding sleeve on the support rod is provided with a sliding sleeve, the elastic sheet is fixedly arranged on the sliding sleeve, and a pushing member is hinged between the sliding sleeve and the connecting plate. When the support rod moves from the high position of the wave bar to the low position, the bottom end of the elastic sheet abuts against the photovoltaic panel and bends. At the same time, the pushing member pushes the sliding sleeve to slide along the support rod.

[0011] Preferably, the elastic sheet includes a mounting portion with uniform thickness and a gradient portion integrally provided at the bottom of the mounting portion, and the cross-sectional area of the gradient portion gradually decreases as it approaches the photovoltaic panel.

[0012] Preferably, a gap is left between two adjacent photovoltaic panels, and the connecting plate passes through the gap.

[0013] Preferably, the top end of the connecting plate is fixedly connected to a guide rod, the top end of the guide rod is fixedly connected to a top plate, a guide sleeve is slidably sleeved on the guide rod, and an elastic component is provided between the guide sleeve and the top plate;

[0014] A second hinge seat is fixed on one end of the top plate, a first hinge seat is fixed on the sliding sleeve, and the pushing member is hinged between the first hinge seat and the second hinge seat.

[0015] Preferably, the pushing member includes a square ring having two transverse arms and two longitudinal arms, and the two longitudinal arms are rotatably connected to the first hinge seat and the second hinge seat respectively.

[0016] Preferably, a support member is provided between the support rod and the wave strip, and the support member includes a support fixedly connected to the support rod and a roller rotatably connected to the support, and the roller is in rolling contact with the wave surface of the wave strip.

[0017] Preferably, the elastic sheet is sandwiched between the sliding sleeve and the pressing plate, and the pressing plate is fixed to the sliding sleeve by a fastener;

[0018] A positioning protrusion is provided on one side of the pressure plate, and a long strip-shaped positioning hole adapted to the positioning protrusion is opened on the elastic sheet.

[0019] Preferably, a plurality of rolling grooves are provided on the support rod, and a roller is provided inside the rolling groove through a positioning piece, and the positioning piece includes a stud and an insertion rod and a pressure head respectively fixed at both ends of the stud, the insertion rod is inserted into the inside of the roller, and the pressure head is provided with a hexagonal groove on one end face away from the stud.

[0020] Preferably, the driving assembly includes a reciprocating screw and a driving motor, the driving motor is transmission-connected to the reciprocating screw via a synchronous belt, and the nut on the reciprocating screw is fixedly connected to the connecting plate.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The present invention utilizes the elastic sliding connection between the end of the support rod and the connecting plate, and cooperates with the wavy surface of the wave strip, so that the support rod can move back and forth towards or away from the photovoltaic panel while moving in a straight line, thereby changing the friction band between the elastic sheet and the photovoltaic panel. Afterwards, in conjunction with the pushing member and the sliding sleeve, the reciprocating movement of the support rod towards or away from the photovoltaic panel can be converted into the left and right lateral reciprocating movement of the elastic sheet, thereby utilizing the edge corner position of the scraping part to deeply scrape and remove dust on the surface of the photovoltaic panel, remove stubborn impurities, ensure the cleanliness of the surface of the photovoltaic panel, and ensure its power generation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 For the present invention Figure 1 A in the middle is an enlarged structural diagram;

[0025] Figure 3 For the present invention Figure 1 The enlarged structural diagram at B in the middle;

[0026] Figure 4 It is a schematic diagram of the local structure of the present invention;

[0027] Figure 5 This is a schematic structural diagram of the support rod, sliding sleeve, elastic sheet and pressure plate of the present invention;

[0028] Figure 6 It is a structural schematic diagram of the drive assembly of the present invention;

[0029] Figure 7 This is a schematic structural diagram of the connecting plate, guide rod, guide sleeve, top plate, elastic component, and square ring of the present invention;

[0030] Figure 8 It is a structural schematic diagram of the elastic sheet and the pressing plate of the present invention;

[0031] Figure 9Schematic diagram of the cross-sectional structure of the support rod and the sliding sleeve of the present invention;

[0032] Figure 10 It is a structural schematic diagram of the support rod of the present invention;

[0033] Figure 11 It is a structural schematic diagram of the positioning member of the present invention.

[0034] In the figure: 100, photovoltaic panel; 110, gap; 1, support rod; 101, rolling groove; 2, sliding sleeve; 3, connecting plate; 4, guide rod; 5, guide sleeve; 6, top plate; 7, elastic member; 8, square ring; 801, transverse arm; 802, longitudinal arm; 9, first hinge seat; 10, second hinge seat; 11, corrugated strip; 1101, high portion; 1102, low portion; 12, support member; 1201, support seat; 1202, roller; 13. Elastic sheet; 1301. Mounting portion; 1302. Gradient portion; 1303. Crack; 1304. Scraping portion; 1305. Positioning hole; 14. Pressing plate; 1401. Positioning protrusion; 15. Fastener; 16. Roller; 17. Positioning piece; 1701. Stud; 1702. Insert rod; 1703. Press head; 1704. Hexagonal slot; 18. Reciprocating screw; 19. Drive motor; 20. Nut; 21. Synchronous belt. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] See also Figures 1-11 , the present invention provides a technical solution:

[0037] A photovoltaic panel automatic cleaning device includes a support rod 1 and a drive assembly respectively arranged on the upper and lower sides of the photovoltaic panel 100. The support rod 1 and the drive assembly are respectively arranged on the upper and lower sides of the photovoltaic panel 100 to prevent the drive assembly from blocking sunlight. At the same time, the photovoltaic panel 100 can be used to block sunlight and rain, thereby avoiding long-term exposure of the drive assembly to the sun and extending the service life of the drive assembly.

[0038] The driving assembly is used to drive the support rod 1 to reciprocate in a direction parallel to the photovoltaic panel 100, so as to cooperate with the elastic sheet 13 set on the support rod 1 to scrape the photovoltaic panel 100; specifically, the photovoltaic panel 100 is rectangular. In this embodiment, the driving support rod 1 can drive the support rod 1 to reciprocate along the length direction of the photovoltaic panel 100, and can also drive the support rod 1 to reciprocate along the width direction of the photovoltaic panel 100, without specific limitation here; when the support rod 1 reciprocates, the elastic sheet 13 can scrape and clean the surface of the photovoltaic panel 100, remove impurities such as dust on the surface, and ensure the power generation efficiency of the photovoltaic panel 100.

[0039] The driving assembly includes a connecting plate 3, and a gap 110 is left between two adjacent photovoltaic panels 100. The connecting plate 3 passes through the gap 110. In this embodiment, the function of the connecting plate 3 is to transmit the driving force of the driving assembly to the support rod 1, so as to use the driving assembly to drive the support rod 1 to move. Therefore, the connecting plate 3 can be set to a thin plate shape as shown in the figure, so as to reduce the width of the gap 110 between two adjacent photovoltaic panels 100, thereby increasing the utilization rate of the space. For example, within a unit area, the smaller the gap 110, the greater the number of photovoltaic panels 100, and the higher the power generation efficiency.

[0040] The end of the support rod 1 is elastically and slidingly connected to the connecting plate 3, so that the support rod 1 can reciprocate close to or away from the photovoltaic panel 100 through the wave bar 11 during reciprocating motion; specifically, the wave bar 11 is fixedly connected to the photovoltaic panel 100, and its wavy surface faces the support rod 1, and the direction of the elastic sliding connection between the connecting plate 3 and the support rod 1 is: the support rod 1 can slide in the direction of approaching or moving away from the photovoltaic panel 100, and an elastic component 7 is provided on the support rod 1 for pushing the support rod 1 close to the photovoltaic panel 100. Therefore, when the support rod 1 is driven to move by the driving assembly, the support rod 1 will continuously fluctuate due to the wavy surface of the wave bar 11, that is, continuously approaching and moving away from the photovoltaic panel 100, so that the elastic sheet 13 is regularly squeezed and relaxed, thereby changing the size of the squeezing force of the elastic sheet 13 in contact with the surface of the photovoltaic panel 100. In the above scheme, the degree of squeezing and relaxation of the elastic sheet 13 can be adjusted according to the actual situation. For example, when the support rod 1 moves up to the maximum distance from the photovoltaic panel 100, the elastic sheet 13 can be adjusted so that the bottom end just contacts the surface of the photovoltaic panel 100, or the elastic sheet 13 can be adjusted so that the bottom end is partially bent. No specific limitation is made here.

[0041] Further, such as Figure 4As shown, the bottom end of the elastic sheet 13 is formed with a plurality of scraping portions 1304 through the cracks 1202; that is, the bottom of the elastic sheet 13 in this embodiment is not a complete sheet, but is composed of a plurality of scraping portions 1304. In this way, when the distance between the support rod 1 and the photovoltaic panel 100 is minimized under the action of the wave bar 11, the plurality of scraping portions 1304 will bend to a certain extent, and each crack 1202 can scrape the surface of the photovoltaic panel 100 during the movement, which has a good dust removal effect and has a good effect on cleaning dust and other impurities adhering to the surface of the photovoltaic panel 100.

[0042] The support rod 1 is provided with a sliding sleeve 2, the sliding direction of which is consistent with the length direction of the support rod 1. An elastic sheet 13 is fixed to the sliding sleeve 2, and a pusher is hinged between the sliding sleeve 2 and the connecting plate 3. When the support rod 1 moves from the high portion 1101 of the wave bar 11 to the low portion 1102, the bottom end of the elastic sheet 13 abuts against the photovoltaic panel 100 and bends, while the pusher pushes the sliding sleeve 2 to slide along the support rod 1. Specifically, the aforementioned scraping portion 1304 needs to be coupled with the sliding of the sliding sleeve 2 to achieve deep dust removal on the photovoltaic panel 100. Specifically, under the action of the pusher, the sliding sleeve 2 can convert the reciprocating motion of the support rod 1 into the left and right lateral reciprocating motion of the elastic sheet 13, thereby scraping and removing dust from the surface of the photovoltaic panel 100 using the edge corners of the scraping portion 1304. Because each scraping portion 1304 has four corner positions and the number of scraping portions 1304 is large, the scraping and cleaning effect of adhered dust is better.

[0043] The elastic sheet 13 is sandwiched between the sliding sleeve 2 and the pressure plate 14. In this embodiment, there are several elastic sheets 13, and each elastic sheet 13 corresponds to a pressure plate 14. The purpose of this arrangement is to facilitate low-cost replacement of damaged elastic sheets 13.

[0044] The pressure plate 14 is fixed to the sleeve 2 by a fastener 15, which can be a bolt; a positioning protrusion 1401 is provided on one side of the pressure plate 14, and a long strip-shaped positioning hole 1305 is provided on the elastic sheet 13 to match the positioning protrusion 1401; the positioning protrusion 1401 and the long strip-shaped positioning hole 1305 can achieve high-precision positioning of the elastic sheet 13, ensuring that the bottom surface of the elastic sheet 13 remains parallel to the surface of the photovoltaic panel 100.

[0045] There is no specific limitation on the specific structure of the drive assembly. For example, the drive assembly may include a reciprocating screw 18 and a drive motor 19. The drive motor 19 is connected to the reciprocating screw 18 through a synchronous belt 21. The nut 20 on the reciprocating screw 18 is fixedly connected to the connecting plate 3.

[0046] like Figures 8-11A plurality of rolling grooves 101 are provided on the support rod 1, and a roller 16 is provided inside the rolling groove 101 through a positioning member 17 for rolling. When the sleeve 2 slides on the support rod 1, the roller 16 will slide in the rolling groove 101 to reduce the friction between the support rod 1 and the sleeve 2 by rolling.

[0047] The positioning member 17 includes a stud 1701 and an insertion rod 1702 and a pressure head 1703 respectively fixed at both ends of the stud 1701. The stud 1701, the insertion rod 1702 and the pressure head 1703 are coaxially arranged. The insertion rod 1702 is inserted into the interior of the drum 16. A hexagonal groove 1704 is provided on the end face of the pressure head 1703 away from the stud 1701 to facilitate the staff to screw the stud 1701.

[0048] In the above scheme, the end of the support rod 1 is elastically slidably connected to the connecting plate 3, and the wavy surface of the wave bar 11 is used to make the support rod 1 move back and forth towards or away from the photovoltaic panel 100 while moving in a straight line, thereby changing the friction band between the elastic sheet 13 and the photovoltaic panel 100. Afterwards, in combination with the pushing member and the sliding sleeve 2, the reciprocating movement of the support rod 1 towards or away from the photovoltaic panel 100 can be converted into the left and right lateral reciprocating movement of the elastic sheet 13, thereby utilizing the edge corner position of the scraping portion 1304 to deeply scrape and remove dust on the surface of the photovoltaic panel 100, remove stubborn impurities, ensure the cleanliness of the surface of the photovoltaic panel 100, and ensure its power generation efficiency.

[0049] like Figure 8 As shown, the elastic sheet 13 includes a mounting portion 1301 of uniform thickness and a gradient portion 1302 integrally disposed at the bottom of the mounting portion 1301. The cross-sectional area of the gradient portion 1302 gradually decreases as it approaches the photovoltaic panel 100. In this embodiment, the elastic sheet 13 can be made of a high-temperature resistant rubber material. Since the cross-sectional area of the gradient portion 1302 gradually decreases as it approaches the photovoltaic panel 100, as the support rod 1 gradually moves toward the photovoltaic panel 100, the thickness of the curved portion of the scraping portion 1304 gradually increases, thereby further increasing the compressive force between the scraping portion 1304 and the photovoltaic panel 100.

[0050] The elastic sliding connection between the end of the support rod 1 and the connecting plate 3 is described below.

[0051] In this embodiment, the top end of the connecting plate 3 is fixedly connected to a guide rod 4, the top end of the guide rod 4 is fixedly connected to a top plate 6, a guide sleeve 5 is slidably sleeved on the guide rod 4, and an elastic component 7 is provided between the guide sleeve 5 and the top plate 6. The elastic component 7 can be a spring, and its specific model can be adjusted according to actual conditions and is not limited here; a second hinge seat 10 is fixed to one end of the top plate 6, a first hinge seat 9 is fixed to the sliding sleeve 2, and the pusher is hinged between the first hinge seat 9 and the second hinge seat 10. Furthermore, the specific structure of the pusher is not limited. In some embodiments, it can include a square ring 8 as shown in the figure, the square ring 8 has two transverse arms 801 and two longitudinal arms 802, and the two longitudinal arms 802 are rotatably connected to the first hinge seat 9 and the second hinge seat 10 respectively.

[0052] To improve the smoothness and stability of the entire device, a support member 12 is provided between the support rod 1 and the wave bar 11. Specifically, the support member 12 includes a support 1201 fixedly connected to the support rod 1 and a roller 1202 rotatably connected to the support 1201. The roller 1202 is in rolling contact with the wave surface of the wave bar 11. Using rolling contact instead of sliding contact can reduce the friction between the support rod 1 and the wave bar 11.

[0053] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A photovoltaic panel automatic cleaning device, characterized in that: It includes support rods and drive components respectively arranged on the upper and lower sides of the photovoltaic panel, wherein the drive component is used to drive the support rods to reciprocate in a direction parallel to the photovoltaic panel to cooperate with the elastic sheets arranged on the support rods to scrape the photovoltaic panel; The driving assembly includes a connecting plate, and the end of the support rod is elastically slidably connected to the connecting plate, so that the support rod can reciprocate towards or away from the photovoltaic panel through the wave strip during reciprocating motion; The bottom end of the elastic sheet is formed with a plurality of scraping portions through cracks; The sliding sleeve on the support rod is provided with a sliding sleeve, the elastic sheet is fixedly arranged on the sliding sleeve, and a pushing member is hinged between the sliding sleeve and the connecting plate. When the support rod moves from the high position of the wave bar to the low position, the bottom end of the elastic sheet abuts against the photovoltaic panel and bends. At the same time, the pushing member pushes the sliding sleeve to slide along the support rod.

2. The automatic cleaning device for photovoltaic panels according to claim 1, characterized in that: The elastic sheet includes a mounting portion with uniform thickness and a gradient portion integrally provided at the bottom of the mounting portion. The cross-sectional area of the gradient portion gradually decreases as it approaches the photovoltaic panel.

3. The automatic cleaning device for photovoltaic panels according to claim 1, characterized in that: A gap is left between two adjacent photovoltaic panels, and the connecting plate passes through the gap.

4. The photovoltaic panel automatic cleaning device according to claim 1, characterized in that: The top end of the connecting plate is fixedly connected to a guide rod, the top end of the guide rod is fixedly connected to a top plate, a guide sleeve is slidably sleeved on the guide rod, and an elastic component is provided between the guide sleeve and the top plate; A second hinge seat is fixed on one end of the top plate, a first hinge seat is fixed on the sliding sleeve, and the pushing member is hinged between the first hinge seat and the second hinge seat.

5. The automatic photovoltaic panel cleaning device according to claim 4, characterized in that: The pushing member includes a square ring having two transverse arms and two longitudinal arms. The two longitudinal arms are rotatably connected to the first hinge seat and the second hinge seat respectively.

6. The automatic photovoltaic panel cleaning device according to claim 1, characterized in that: A support member is provided between the support rod and the wave strip, and the support member includes a support fixedly connected to the support rod and a roller rotatably connected to the support, and the roller is in rolling contact with the wave surface of the wave strip.

7. The photovoltaic panel automatic cleaning device according to claim 1, characterized in that: The elastic sheet is sandwiched between the sliding sleeve and the pressing plate, and the pressing plate is fixed to the sliding sleeve by a fastener; A positioning protrusion is provided on one side of the pressure plate, and a long strip-shaped positioning hole adapted to the positioning protrusion is opened on the elastic sheet.

8. The photovoltaic panel automatic cleaning device according to claim 1, characterized in that: The support rod is provided with a plurality of rolling grooves, and a roller is arranged inside the rolling groove by rolling through a positioning piece. The positioning piece includes a stud and an insertion rod and a pressure head respectively fixed at both ends of the stud. The insertion rod is inserted into the interior of the roller, and the pressure head is provided with a hexagonal groove on one end face away from the stud.

9. The photovoltaic panel automatic cleaning device according to claim 1, characterized in that: The driving assembly includes a reciprocating screw and a driving motor. The driving motor is connected to the reciprocating screw through a synchronous belt. The nut on the reciprocating screw is fixedly connected to the connecting plate.

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