An automatic cleaning device for photovoltaic panels

Abstract

This invention relates to the field of photovoltaic panel cleaning technology, and more particularly to an automatic photovoltaic panel cleaning device. It includes support rods and a drive assembly respectively disposed on the upper and lower sides of a photovoltaic panel. The drive assembly drives the support rods to reciprocate along a direction parallel to the photovoltaic panel, cooperating with elastic plates disposed on the support rods to scrape the photovoltaic panel. The drive assembly includes a connecting plate, and the end of the support rod is elastically slidably connected to the connecting plate, allowing the support rod to move closer to or away from the photovoltaic panel via a corrugated strip during reciprocating motion. The bottom end of the elastic plate has several scraping portions formed by slits. A sliding sleeve is slidably fitted on the support rod, and the elastic plate is fixedly disposed on the sliding sleeve. A pushing member is hinged between the sliding sleeve and the connecting plate. When the support rod moves from the higher part to the lower part of the corrugated strip, the device removes stubborn impurities, ensuring the cleanliness of the photovoltaic panel surface and guaranteeing its power generation efficiency.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic panel cleaning technology, specifically to an automatic photovoltaic panel cleaning device. Background Technology

[0002] Photovoltaic power generation is a technology that directly converts light energy into electrical energy using the photovoltaic effect at the semiconductor interface. It mainly consists of three parts: solar panels (modules), a controller, and an inverter. Solar cells are connected in series and then encapsulated for protection to form large-area solar cell modules. Combined with components such as power controllers, this forms a photovoltaic power generation device.

[0003] Photovoltaic panels, due to their long-term outdoor exposure, accumulate dust on their surfaces, affecting their power generation efficiency. Therefore, regular cleaning is necessary, either manually or using automated equipment. For example, Chinese utility model patent CN219893280U discloses an easy-to-clean solar panel. This easy-to-clean solar panel includes a supporting main assembly, a water storage and supply assembly, and a rainwater collection assembly. The supporting main assembly includes a support frame, a solar photovoltaic panel, a first electric push rod, and a cleaning section. The solar photovoltaic panel is positioned on top of the support frame, and the cleaning section is located above the solar photovoltaic panel. The first electric push rod is installed on top of the support frame, and its output end is connected to the cleaning section. The water storage and supply assembly supplies water to the cleaning section.

[0004] Although the technical solution provided by the aforementioned patent can clean the surface of photovoltaic panels, the actual cleaning effect is not good. Specifically, the technical solution only uses the cooperation between the first electric push rod 130 and the cleaning part 140 to wipe the surface of the photovoltaic panel, which can only remove floating dust and is not effective in cleaning dust and other impurities adhering to the surface of the photovoltaic panel. Moreover, the cleaning device in this technical solution occupies a large space and is not suitable for scenarios where multiple photovoltaic panels generate electricity together. Summary of the Invention

[0005] The purpose of this invention is to provide an automatic cleaning device for photovoltaic panels to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An automatic cleaning device for photovoltaic panels includes support rods and a drive assembly respectively disposed on the upper and lower sides of the photovoltaic panel. The drive assembly is used to drive the support rods to reciprocate along a direction parallel to the photovoltaic panel, so as to cooperate with the elastic sheet disposed on the support rods to scrape the photovoltaic panel.

[0008] The drive 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 move closer to or further away from the photovoltaic panel through the corrugated strip during reciprocating motion;

[0009] The bottom end of the elastic sheet has several scraping portions formed through the cracks;

[0010] A sliding sleeve is slidably fitted on the support rod, and an elastic sheet is fixedly mounted on the sliding sleeve. A pushing member is hinged between the sliding sleeve and the connecting plate. When the support rod moves from the high position to the low position of the corrugated strip, the bottom end of the elastic sheet abuts against the photovoltaic plate 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 of uniform thickness and a gradient portion integrally disposed at the bottom of the mounting portion, wherein the cross-sectional area of ​​the gradient portion gradually decreases along the direction gradually approaching the photovoltaic panel.

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

[0013] Preferably, a guide rod is fixedly connected to the top end of the connecting plate, a top plate is fixedly connected to the top end of the guide rod, 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 to one end of the top plate, a first hinge seat is fixed to the sliding sleeve, and the pusher is hinged between the first hinge seat and the second hinge seat.

[0015] Preferably, the pusher includes a square ring having two transverse arms and two longitudinal arms, the two longitudinal arms being 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 corrugated strip. The support member includes a support fixedly connected to the support rod and a roller rotatably connected to the support. The roller makes rolling contact with the corrugated surface of the corrugated strip.

[0017] Preferably, the elastic sheet is sandwiched between the sliding sleeve and the pressure plate, and the pressure plate is fixed to the sliding sleeve by fasteners;

[0018] The pressure plate has a positioning protrusion on one side, and the elastic sheet has an elongated positioning hole that matches the positioning protrusion.

[0019] Preferably, the support rod has several rolling grooves, and a roller is rolled inside the rolling grooves by a positioning member. The positioning member includes a stud and a rod and a pressure head respectively fixed at both ends of the stud. The rod is inserted into the inside of the roller, and the end face of the pressure head away from the stud has a hexagonal groove.

[0020] Preferably, the drive assembly includes a reciprocating lead screw and a drive motor, the drive motor being connected to the reciprocating lead screw via a synchronous belt, and the nut on the reciprocating lead screw being fixedly connected to the connecting plate.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] This invention utilizes the elastic sliding connection between the end of the support rod and the connecting plate, combined with the wavy surface of the corrugated strip, to allow the support rod to move back and forth towards or away from the photovoltaic panel while moving linearly. This alters the friction between the elastic sheet and the photovoltaic panel. Subsequently, with the assistance of the pushing component and the sliding sleeve, the reciprocating movement of the support rod towards or away from the photovoltaic panel is converted into the lateral reciprocating movement of the elastic sheet. This allows for deep scraping and dust removal of the photovoltaic panel surface using the edge corner of the scraping part, eliminating stubborn impurities, ensuring the cleanliness of the photovoltaic panel surface, and guaranteeing its power generation efficiency. Attached Figure Description

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

[0024] Figure 2 For the present invention Figure 1 Enlarged structural diagram at point A in the middle;

[0025] Figure 3 For the present invention Figure 1 Enlarged structural diagram at point B;

[0026] Figure 4 This is a partial structural diagram of the present invention;

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

[0028] Figure 6 This is a schematic diagram of the structure of the driving component of the present invention;

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

[0030] Figure 8 This is a schematic diagram of the structure of the elastic sheet and pressure plate of the present invention;

[0031] Figure 9This is a cross-sectional structural schematic diagram of the support rod and sliding sleeve of the present invention;

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

[0033] Figure 11 This is a schematic diagram of the positioning component of the present invention.

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

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Please see Figures 1-11 The present invention provides a technical solution:

[0037] An automatic cleaning device for photovoltaic panels includes support rods 1 and a drive assembly respectively disposed on the upper and lower sides of a photovoltaic panel 100. The purpose of disposing of the support rods 1 and the drive assembly on the upper and lower sides of the photovoltaic panel 100 is to prevent the drive assembly from blocking sunlight, while the photovoltaic panel 100 can block sunlight and rain, thus avoiding long-term exposure of the drive assembly to the sun and extending its service life.

[0038] The drive assembly is used to drive the support rod 1 to reciprocate along 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 and clean the photovoltaic panel 100. Specifically, the photovoltaic panel 100 is rectangular. In this embodiment, the drive rod 1 can be driven to reciprocate along the length direction of the photovoltaic panel 100 or along the width direction of the photovoltaic panel 100, without specific limitation. When the support rod 1 reciprocates, the elastic sheet 13 can scrape and clean the surface of the photovoltaic panel 100 to remove surface dust and other impurities, thus ensuring the power generation efficiency of the photovoltaic panel 100.

[0039] The drive assembly includes a connecting plate 3. 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 drive assembly to the support rod 1 so that the drive assembly can drive the support rod 1 to move. Therefore, the connecting plate 3 can be set in the shape of a thin plate as shown in the figure, thereby reducing the width of the gap 110 between two adjacent photovoltaic panels 100 and increasing the utilization rate of space. For example, the smaller the gap 110 per unit area, the more photovoltaic panels 100 there are and the higher the power generation efficiency.

[0040] The end of the support rod 1 is elastically slidably connected to the connecting plate 3, so that the support rod 1 can move closer to or further away from the photovoltaic panel 100 through the corrugated strip 11 during reciprocating motion. Specifically, the corrugated strip 11 is fixedly connected to the photovoltaic panel 100, and its corrugated surface faces the support rod 1. Moreover, the elastic sliding connection direction between the connecting plate 3 and the support rod 1 is such that the support rod 1 can slide along the direction of approaching or moving away from the photovoltaic panel 100. Furthermore, the support rod 1 is provided with an elastic component 7, which is used to push the support rod 1 closer to the photovoltaic panel 100. Thus, when the support rod 1 is driven by the drive component to move, the support rod 1 will continuously undulate due to the corrugated surface of the corrugated strip 11, that is, continuously approach and move away from the photovoltaic panel 100, so that the elastic sheet 13 is regularly squeezed and relaxed, changing the magnitude of the squeezing force between the elastic sheet 13 and the surface of the photovoltaic panel 100. In the above scheme, the degree of compression 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 is in contact with 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] Furthermore, such as Figure 4As shown, the bottom end of the elastic sheet 13 has a plurality of scraping portions 1304 formed by the slits 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. Thus, when the distance between the support rod 1 and the photovoltaic panel 100 is the smallest under the action of the corrugated strip 11, the plurality of scraping portions 1304 will bend to a certain extent, and each slit 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] A sliding sleeve 2 is slidably mounted on the support rod 1. The sliding direction of the sliding sleeve 2 is consistent with the length direction of the support rod 1. An elastic plate 13 is fixedly mounted on the sliding sleeve 2. A pushing member is hinged between the sliding sleeve 2 and the connecting plate 3. When the support rod 1 moves from the high position 1101 of the corrugated strip 11 to the low position 1102, the bottom end of the elastic plate 13 abuts against the photovoltaic panel 100 and bends. At the same time, the pushing member pushes the sliding sleeve 2 to slide along the support rod 1. Specifically, the aforementioned scraping part 1304 needs to be combined with the sliding of the sliding sleeve 2 to achieve deep dust removal of the photovoltaic panel 100. In detail, under the action of the pushing member, the sliding sleeve 2 can convert the reciprocating motion of the support rod 1 into the lateral reciprocating motion of the elastic plate 13, thereby using the edge corner position of the scraping part 1304 to scrape and remove dust from the surface of the photovoltaic panel 100. Since each scraping part 1304 has four corner positions and there are many scraping parts 1304, the scraping and cleaning effect on the adhering 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 the low-cost replacement of damaged elastic sheets 13.

[0044] The pressure plate 14 is fixed to the sliding sleeve 2 by fasteners 15, which can be bolts; a positioning protrusion 1401 is provided on one side of the pressure plate 14, and an elongated positioning hole 1305 adapted to the positioning protrusion 1401 is provided on the elastic sheet 13; the positioning protrusion 1401 and the elongated positioning hole 1305 can achieve high-precision positioning of the elastic sheet 13, ensuring that the bottom surface of the elastic sheet 13 is parallel to the surface of the photovoltaic panel 100.

[0045] The specific structure of the drive assembly is not specifically limited. 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 via a synchronous belt 21. The nut 20 on the reciprocating screw 18 is fixedly connected to the connecting plate 3.

[0046] like Figures 8-11The support rod 1 has several roller grooves 101. Inside the roller grooves 101, a roller 16 is rolled by a positioning member 17. When the sliding sleeve 2 slides on the support rod 1, the roller 16 will slide in the roller grooves 101 to reduce the friction between the support rod 1 and the sliding sleeve 2 by rolling.

[0047] The positioning component 17 includes a stud 1701 and a rod 1702 and a pressure head 1703 respectively fixed at both ends of the stud 1701. The stud 1701, the rod 1702 and the pressure head 1703 are coaxially arranged. The rod 1702 is inserted into the inside of the roller 16. The end face of the pressure head 1703 away from the stud 1701 has a hexagonal groove 1704 to facilitate the operator to turn the stud 1701.

[0048] In the above scheme, the end of the support rod 1 is elastically slidably connected to the connecting plate 3. With the wavy surface of the corrugated strip 11, the support rod 1 can move back and forth towards or away from the photovoltaic panel 100 while moving linearly. This changes the friction between the elastic sheet 13 and the photovoltaic panel 100. Then, with the help of the pusher 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. This allows the edge corner of the scraping part 1304 to deeply scrape and remove dust from the surface of the photovoltaic panel 100, removing stubborn impurities, ensuring the cleanliness of the photovoltaic panel 100 surface, and ensuring 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 along the direction gradually approaching the photovoltaic panel 100. In this embodiment, the elastic sheet 13 can be made of high-temperature resistant rubber. Because the cross-sectional area of ​​the gradient portion 1302 gradually decreases along the direction gradually approaching the photovoltaic panel 100, the thickness of the bending position of the scraping portion 1304 gradually increases as the support rod 1 gradually moves towards the photovoltaic panel 100, thereby further increasing the compressive force between the scraping portion 1304 and the photovoltaic panel 100.

[0050] The following describes the elastic sliding connection between the end of the support rod 1 and the connecting plate 3.

[0051] In this embodiment, a guide rod 4 is fixedly connected to the top end of the connecting plate 3, and a top plate 6 is fixedly connected to the top end of the guide rod 4. 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 the actual situation, which is not limited here. A second hinge seat 10 is fixed to one end of the top plate 6, and a first hinge seat 9 is fixed to the sliding sleeve 2. The pushing member is hinged between the first hinge seat 9 and the second hinge seat 10. Furthermore, the specific structure of the pushing member is not limited. In some embodiments, it may 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 corrugated strip 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 makes rolling contact with the corrugated surface of the corrugated strip 11. By using rolling contact instead of sliding contact, the friction between the support rod 1 and the corrugated strip 11 can be reduced.

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

Claims

1. An automatic cleaning device for photovoltaic panels, characterized in that, It includes support rods and a drive assembly respectively disposed on the upper and lower sides of the photovoltaic panel. The drive assembly is used to drive the support rods to reciprocate along a direction parallel to the photovoltaic panel, so as to cooperate with the elastic sheet disposed on the support rods to scrape the photovoltaic panel. The drive 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 move closer to or further away from the photovoltaic panel through the corrugated strip during reciprocating motion; The bottom end of the elastic sheet has several scraping portions formed through the cracks; A sliding sleeve is slidably fitted on the support rod, and an elastic sheet is fixedly mounted on the sliding sleeve. A pushing member is hinged between the sliding sleeve and the connecting plate. When the support rod moves from the high position to the low position of the corrugated strip, the bottom end of the elastic sheet abuts against the photovoltaic plate and bends. At the same time, the pushing member pushes the sliding sleeve to slide along the support rod.

2. The automatic photovoltaic panel cleaning device according to claim 1, characterized in that, The elastic sheet includes a mounting portion of uniform thickness and a gradient portion integrally disposed at the bottom of the mounting portion. The cross-sectional area of ​​the gradient portion gradually decreases along the direction that gradually approaches the photovoltaic panel.

3. The automatic photovoltaic panel cleaning device 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 automatic photovoltaic panel cleaning device according to claim 1, characterized in that, A guide rod is fixedly connected to the top of the connecting plate, and a top plate is fixedly connected to the top of the guide rod. 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 to one end of the top plate, a first hinge seat is fixed to the sliding sleeve, and the pusher 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 pusher includes a square ring having two transverse arms and two longitudinal arms, the two longitudinal arms being 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 corrugated strip. The support member includes a support fixedly connected to the support rod and a roller rotatably connected to the support. The roller makes rolling contact with the wave surface of the corrugated strip.

7. The automatic photovoltaic panel cleaning device according to claim 1, characterized in that, The elastic sheet is sandwiched between the sliding sleeve and the pressure plate, and the pressure plate is fixed to the sliding sleeve by fasteners; The pressure plate has a positioning protrusion on one side, and the elastic sheet has an elongated positioning hole that matches the positioning protrusion.

8. The automatic photovoltaic panel cleaning device according to claim 1, characterized in that, The support rod has several rolling grooves, and a roller is rolled inside the rolling grooves by a positioning element. The positioning element includes a stud and a rod and a pressure head fixed at both ends of the stud. The rod is inserted into the inside of the roller, and the end face of the pressure head away from the stud has a hexagonal groove.

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

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