Photovoltaic panel cleaning device

Abstract

The invention discloses a photovoltaic panel cleaning device which comprises a moving plate, cleaning cloth is bonded to the moving plate, the end, away from the moving plate, of the cleaning cloth is attached to a photovoltaic panel, the photovoltaic panel cleaning device further comprises a driving assembly and a water supply assembly, the driving assembly can make the moving plate slide on the photovoltaic panel, and the water supply assembly can supply water to the moving plate. The driving assembly comprises a fixing block, a limiting groove is formed in the fixing block, a pair of roller bearings is installed on the opposite groove walls of the limiting groove, and a first lead screw is fixedly connected to the rotating inner rings of the pair of roller bearings. Compared with the prior art, the photovoltaic panel cleaning device has the advantages that dirt such as dust, sand dust, soil and bird secretions on the surface of a photovoltaic panel can be effectively removed, the photovoltaic panel is prevented from being shielded by the dirt, the sunlight absorption rate of the photovoltaic panel is increased, the power generation efficiency is improved, meanwhile, the hot spot effect can be effectively prevented, and the service life of the photovoltaic panel is prolonged. The photovoltaic panel is protected, and long-term stable operation of the photovoltaic panel is ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of photovoltaic panel cleaning devices, and in particular relates to a photovoltaic panel cleaning device. Background Art

[0002] With the continuous growth of global energy demand and the pursuit of clean energy, photovoltaic power generation has attracted widespread attention as a clean and sustainable form of energy. Photovoltaic power generation systems mainly include photovoltaic panels, inverters and other auxiliary facilities. Photovoltaic panels, as the core components of photovoltaic power generation, directly convert solar energy into electrical energy through the photovoltaic effect, and ultimately connect to the grid through inverters or directly provide electricity to users.

[0003] However, in actual applications, various impurities are easily accumulated on the surface of photovoltaic panels, such as dust, sand, soil, bird secretions and other dirt. These dirt will block the surface of the photovoltaic panels and reduce their absorption rate of sunlight. In addition, certain organic or chemical substances may cause hot spot effects, that is, photovoltaic units with low voltages cause local currents to accumulate too much heat, causing local overheating and even damaging photovoltaic panels, further affecting power generation efficiency. In addition, acidic substances in certain impurities may corrode the surface of photovoltaic panels, reducing their ability to operate stably in the long term.

[0004] Therefore, in view of the above technical problems, it is necessary to provide a photovoltaic panel cleaning device.

[0005] The information disclosed in this background technology section is only intended to enhance the understanding of the overall background of the invention and should not be regarded as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the invention

[0006] The purpose of the present invention is to provide a photovoltaic panel cleaning device, which can effectively remove dust, sand, soil, bird secretions and other dirt on the surface of the photovoltaic panel, prevent these dirt from blocking the photovoltaic panel, increase its absorption rate of sunlight, and thus enhance power generation efficiency. At the same time, the device can also effectively prevent the hot spot effect, protect the photovoltaic panel, and ensure that the photovoltaic panel can operate stably for a long time.

[0007] In order to achieve the above-mentioned object, a specific embodiment of the present invention provides a photovoltaic panel cleaning device, comprising a movable plate, a cleaning cloth is bonded to the movable plate, an end of the cleaning cloth away from the movable plate is in contact with the photovoltaic panel, and the photovoltaic panel cleaning device further comprises:

[0008] A driving assembly, wherein the driving assembly enables the movable plate to slide on the photovoltaic panel, the driving assembly comprises a fixed block, a limiting groove is provided on the fixed block, a pair of roller bearings are installed on the opposite groove walls of the limiting groove, a first lead screw is fixedly connected to the rotating inner rings of the pair of roller bearings, a first movable block is meshed and driven on the first lead screw, a first motor is fixedly connected to one end of the first lead screw, and the movable plate is fixedly connected to the first movable block;

[0009] A water supply component, wherein the water supply component comprises a water storage tank, wherein the water storage tank stores water for cleaning the photovoltaic panels.

[0010] In one or more embodiments of the present invention, a placement groove is provided on the lower end surface of the movable plate, and the cleaning cloth is adhered to the bottom wall of the placement groove.

[0011] In one or more embodiments of the present invention, a partition is fixedly connected inside the water tank, a water storage space is formed between the partition and the bottom wall of the water tank, a first water pump is installed on the water tank, and a fourth water pipe and a fifth water pipe are fixedly connected to the first water pump.

[0012] In one or more embodiments of the present invention, a first water pipe is fixedly connected to one side wall of the movable plate, a water storage cavity connected to the first water pipe is opened in the movable plate, a second water pipe is inserted into the first water pipe, a third water pipe is slidably connected to the second water pipe, and the inner diameter of the third water pipe matches the outer diameter of the fifth water pipe.

[0013] In one or more embodiments of the present invention, a first water spray port and a second water spray port are provided on the movable plate, the second water spray port penetrates the bottom wall of the placement slot, and the second water spray port is communicated with the water storage chamber.

[0014] In one or more embodiments of the present invention, a third motor is installed on the movable plate, a second screw is rotatably connected to the third motor, a second movable block is meshed and transmitted on the second screw, a connecting column is integrally formed on the second movable block, and one end of the connecting column away from the second movable block is fixedly connected to the third water conduit.

[0015] In one or more embodiments of the present invention, a mixing box and a second water pump are fixedly connected to the partition, and a sixth water pipe and a seventh water pipe are integrally formed on the second water pump. The sixth water pipe passes through the partition and is inserted into the water storage space, and the seventh water pipe passes through the side wall of the mixing box and is inserted into the mixing box.

[0016] In one or more embodiments of the present invention, the fourth water conduit penetrates the upper panel of the mixing box and is inserted into the mixing box.

[0017] In one or more embodiments of the present invention, a second motor is installed in the water tank, and a rotating rod is rotatably connected to the second motor. The rotating rod passes through the upper panel of the water tank, and an impeller is fixedly connected to one end of the rotating rod away from the second motor.

[0018] In one or more embodiments of the present invention, a heating wire is installed in the mixing box.

[0019] Compared with the prior art, the photovoltaic panel cleaning device of the present invention can effectively remove dust, sand, soil, bird secretions and other dirt on the surface of the photovoltaic panel, prevent these dirt from blocking the photovoltaic panel, improve its absorption rate of sunlight, and thus enhance the power generation efficiency. At the same time, the device can also effectively prevent the hot spot effect, protect the photovoltaic panel, and ensure that the photovoltaic panel can operate stably for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings described below are only some embodiments recorded in the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 This is a schematic structural diagram of a photovoltaic panel cleaning device according to an embodiment of the present invention;

[0022] Figure 2 A partial cross-sectional view of a driving assembly of a photovoltaic panel cleaning device according to an embodiment of the present invention;

[0023] Figure 3 for Figure 2 The structural diagram at A in the middle;

[0024] Figure 4 A cross-sectional view of a moving plate of a photovoltaic panel cleaning device according to an embodiment of the present invention;

[0025] Figure 5 A cross-sectional view of a water storage tank of a photovoltaic panel cleaning device according to an embodiment of the present invention;

[0026] Figure 6 This is a diagram showing the use status of a photovoltaic panel cleaning device in one embodiment of the present invention.

[0027] Description of main reference numerals:

[0028] 1. Pillar; 2. Fixed block; 21. Limiting groove; 22. Roller bearing; 23. First lead screw; 231. First moving block; 3. First motor; 4. Moving plate; 401. Water storage chamber; 402. First water spray port; 403. Second water spray port; 41. Base; 42. First water pipe; 43. Second water pipe; 44. Third water pipe; 5. Water storage tank; 51. First water pump; 511. Fourth water pipe; 512. Fifth water pipe; 52. Mixing box; 521. Pressure tank; 522. Heating wire; 53. Second motor; 531. Rotating rod; 532. Impeller; 54. Second water pump; 541. Sixth water pipe; 542. Seventh water pipe; 55. Water collecting bucket; 56. Partition; 6. Third motor; 61. Second lead screw; 62. Second moving block; 621. Connecting column; 7. Cleaning cloth. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. 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 creative work should fall within the scope of protection of the present invention.

[0030] like Figures 1 to 6 As shown, a photovoltaic panel cleaning device in one embodiment of the present invention includes a moving plate 4, a cleaning cloth 7 is bonded to the moving plate 4, and one end of the cleaning cloth 7 away from the moving plate 4 is in contact with the photovoltaic panel. The photovoltaic panel cleaning device also includes a driving assembly. The driving assembly can move the moving plate 4 on the photovoltaic panel. The driving assembly includes a fixed block 2, a limiting groove 21 is provided on the fixed block 2, a pair of roller bearings 22 are installed on the opposite groove walls of the limiting groove 21, a first lead screw 23 is interference-fitted on the rotating inner ring of the pair of roller bearings 22, a first motor 3 is welded to one end of the first lead screw 23, a first moving block 231 is meshed and driven on the first lead screw 23, and the moving plate 4 is welded to the first moving block 231.

[0031] Specifically, the first motor 3 is provided with an automatic start program, and the first motor 3 is started every morning to drive the first lead screw 23 to rotate. When the first lead screw 23 rotates, because the first moving block 231 is threadedly engaged with the first lead screw 23, the first moving block 231 will move on the first lead screw 23, thereby driving the moving plate 4 to move along the direction of the first lead screw 23, so that the cleaning cloth 7 bonded to the moving plate 4 can clean the dirt on the photovoltaic panel.

[0032] It is worth noting that since the first movable block 231 is engaged on the first screw 23 through a thread, in order to prevent the first movable block 231 from rotating with the first screw 23 when the first screw 23 rotates, the lower end face of the first movable block 231 is attached to the bottom wall of the limiting groove 21. The bottom wall of the limiting groove 21 can limit the rotation of the first movable block 231 so that it can only slide on the bottom wall of the limiting groove 21.

[0033] Preferably, the fixed block 2 is a Teflon fixed block. Teflon hardly adheres to any substance and has excellent non-adhesive properties. The surface is not stained with water or oil. The Teflon coating has a low friction coefficient. When the load slides, the friction coefficient is only between 0.05-0.15. The friction force is extremely low and smoother than ice, which can reduce the friction force between the first moving block 231. In addition, Teflon has excellent wear resistance and excellent anti-aging ability, and has a long service life.

[0034] Since photovoltaic panels are installed outdoors, especially in Baotou, Inner Mongolia, Golmud, Qinghai and other areas in my country, these areas are flat, dry, but windy and sandy. As a result, there is a lot of sand and bird secretions, which will mix together and are difficult to clean with a cleaning cloth alone.

[0035] Further, such as Figures 1 to 6 As shown, the photovoltaic panel cleaning device also includes a water supply component. The water supply component includes a water storage tank 5, and the water storage tank 5 stores water for cleaning the photovoltaic panel. A partition 56 is integrally formed in the water storage tank 5, and a water storage space is formed between the partition 56 and the bottom wall of the water storage tank 5, and water is stored in the water storage space. A first water pump 51 is installed on the water storage tank 5, and a fourth water pipe 511 and a fifth water pipe 512 are welded to the first water pump 51. A first water pipe 42 is welded on one side wall of the movable plate 4, and a water storage cavity 401 connected to the first water pipe 42 is provided in the movable plate 4, a second water pipe 43 is inserted in the first water pipe 42, and a third water pipe 44 is slidably connected to the second water pipe 43, and the inner diameter of the third water pipe 44 matches the outer diameter of the fifth water pipe 512. A placement groove is provided on the lower end surface of the movable plate 4, and the cleaning cloth 7 is bonded to the bottom wall of the placement groove. A second water spray port 403 is also provided on the movable plate 4 . The second water spray port 403 penetrates through the bottom wall of the placement slot, and the second water spray port 403 is communicated with the water storage chamber 401 .

[0036] Specifically, when the first moving block 231 slides to the top in the limiting groove 21, the side wall of the first moving block 231 fits with the top groove wall of the limiting groove 21, and the fifth water pipe 512 is inserted into the third water pipe 44. When the first water pump 51 is started, the water drawn from the water tank 5 by the fourth water pipe 511 can flow from the fifth water pipe 512 into the second water pipe 43, and then into the water storage chamber 401. The water in the water storage chamber 401 flows evenly on the cleaning cloth 7 from the second water spray port 403, so that the cleaning cloth 7 can be moistened. After the first water pump 51 is started for a period of time, it naturally stops running, and the fifth water pipe 512 no longer discharges water. At this time, the first motor 3 is started, and the cleaning cloth 7 moistened with water walks on the photovoltaic panel, so that the mixed dirt on the photovoltaic panel can be cleaned.

[0037] It is worth noting that, in order to increase the power generation, most of the current photovoltaic panels are tilted, and it is difficult for the fifth water pipe 512 to be inserted into the third water pipe 44. In order to solve this problem, Figures 1 to 5 As shown, a third motor 6 is installed on the movable plate 4, and a second lead screw 61 is rotatably connected to the third motor 6. A second movable block 62 is meshed and transmitted on the second lead screw 61. A connecting column 621 is integrally formed on the second movable block 62, and one end of the connecting column 621 away from the second movable block 62 is welded to the third water conduit 44.

[0038] Specifically, in the initial state, the fifth water conduit 512 is inserted into the third water conduit 44. When the cleaning cloth 7 is wetted, the third motor 6 is started first, and as the second lead screw 61 rotates, the second moving block 62 moves on the second lead screw 61 toward the moving plate 4, which can drive the third water conduit 44 to slide on the second water conduit 43 toward the moving plate 4. At this time, the fifth water conduit 512 is separated from the third water conduit 44. Then the first motor 3 is started, and the wetted cleaning cloth 7 cleans the photovoltaic panel.

[0039] After cleaning is completed, the first motor 3 rotates, and the first moving block 231 returns to the initial position, at which time the third water pipe 44 is a distance away from the fifth water pipe 512. The third motor 6 is started and rotates in the opposite direction to the previous action, and the second moving block 62 can slide on the second lead screw 61 in a direction away from the moving plate 4, thereby driving the third water pipe 44 to approach the fifth water pipe 512, and finally sleeved on the fifth water pipe 512. In this way, water leakage can be prevented at the connection between the fifth water pipe 512 and the third water pipe 44.

[0040] It is worth noting that the sliding of the third water pipe 44 on the second water pipe 43 can not only connect with the fifth water pipe 512, but also prevent the second moving block 62 from rotating on the second screw 61, so that the second moving block 62 can move in a straight line on the second screw 61.

[0041] like Figure 5 and Figure 6 As shown, the mixing box 52 and the second water pump 54 are welded on the partition 56, and the sixth water pipe 541 and the seventh water pipe 542 are integrally formed on the second water pump 54. The sixth water pipe 541 penetrates the partition 56 and is inserted into the water storage space, and the seventh water pipe 542 penetrates the side wall of the mixing box 52 and is inserted into the mixing box 52. The fourth water pipe 511 penetrates the upper panel of the mixing box 52 and is inserted into the mixing box 52.

[0042] Specifically, the water in the water storage space is discharged into the mixing box 52 through the second water pump 54. The pressure tank 521 located on the mixing box 52 can inject cleaning liquid into the mixing box 52 to wipe the bird droppings on the photovoltaic panels to prevent the bird droppings from corroding the photovoltaic panels. The cleaning liquid can also enhance the cleaning effect after mixing with the water in the mixing box 52.

[0043] Furthermore, a second motor 53 is installed in the water storage tank 5, and a rotating rod 531 is rotatably connected to the second motor 53. The rotating rod 531 penetrates the upper panel of the water storage tank 5, and an end of the rotating rod 531 away from the second motor 53 is fixedly connected to an impeller 532. After the pressure tank 521 injects cleaning liquid into the mixing box 52, the second motor 53 is started, and the rotating rod 531 can quickly mix the cleaning liquid with the water in the mixing box 52 and stir them evenly. This is more conducive to the cleaning effect of the cleaning cloth 7.

[0044] At the same time, a first water spray port 402 is also provided on the movable plate 4, and the first water spray port 402 penetrates the side wall of the movable plate 4 and is connected to the water storage chamber 401. In the dust storm season, there is a lot of wind and sand on the photovoltaic panel. At this time, the first water pump 51 is started at full power, so that the water storage chamber 401 is quickly filled with water. The water in the water storage chamber 401 will not only flow from the first water spray port 402 to the cleaning cloth 7, but also spray from the first water spray port 402 to the photovoltaic panel, so as to clean the wind and sand on the photovoltaic panel in the first step, and then the cleaning cloth 7 will wipe it again to improve the cleaning effect.

[0045] Furthermore, a heating wire 522 is installed in the mixing box 52. In heavy snow, the snow on the photovoltaic panel covers the photovoltaic panel, which not only blocks the sunlight but also may damage the photovoltaic panel. At this time, the heating wire 522 can heat the water in the mixing box 52, so that the temperature in the entire water storage tank 5 rises, and the water in the water storage space and the water in the mixing box 52 will not freeze. At this time, the first water pump 51 is started, and the hot water sprayed from the first water spray port 402 can melt the snow on the photovoltaic panel to prevent the snow from accumulating on the photovoltaic panel, which can not only ensure the power generation after the weather is clear, but also prevent the snow from damaging the photovoltaic panel.

[0046] like Figure 5As shown, a water collecting bucket 55 is welded on the side wall of the water storage tank 5. The water collecting bucket 55 is L-shaped, one end of the water collecting bucket 55 is in the air, and the other end is in the water storage tank 5. In rainy weather, rainwater can flow from the water collecting bucket 55 into the water storage space of the water storage tank 5 to replenish water. Similarly, manual water can also be poured from the water collecting bucket 55 into the water storage tank 5, which is convenient for operation.

[0047] When in use, the first water pump 51 is started, and the water in the water storage tank 5 is pumped out from the first water spray port 402 and the second water spray port 403, respectively, so that the cleaning cloth 7 and the photovoltaic panel become wet, and then through the reciprocating rotation of the first motor 3, the movable plate 4 can move back and forth on the photovoltaic panel, and the cleaning cloth 7 can clean the dirt on the photovoltaic panel when the movable plate 4 moves. At the same time, the pressure tank 521 installed on the mixing box 52 can add cleaning liquid to the water in the mixing box 52, and can be stirred by the second motor 53 to enhance the cleaning effect on the photovoltaic panel, prevent bird droppings or some organic chemicals from corroding the photovoltaic panel, and avoid the phenomenon of excessive heat accumulation in the local current caused by the photovoltaic unit.

[0048] Compared with the prior art, the photovoltaic panel cleaning device of the present invention can effectively remove dust, sand, soil, bird secretions and other dirt on the surface of the photovoltaic panel, prevent these dirt from blocking the photovoltaic panel, improve its absorption rate of sunlight, and thus enhance the power generation efficiency. At the same time, the device can also effectively prevent the hot spot effect, protect the photovoltaic panel, and ensure that the photovoltaic panel can operate stably for a long time.

[0049] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0050] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A photovoltaic panel cleaning device, characterized in that: The device comprises a movable plate, a cleaning cloth is bonded to the movable plate, an end of the cleaning cloth away from the movable plate is in contact with the photovoltaic panel, and the photovoltaic panel cleaning device further comprises: A driving assembly, wherein the driving assembly enables the movable plate to slide on the photovoltaic panel, the driving assembly comprises a fixed block, a limiting groove is provided on the fixed block, a pair of roller bearings are installed on the opposite groove walls of the limiting groove, a first lead screw is fixedly connected to the rotating inner rings of the pair of roller bearings, a first movable block is meshed and driven on the first lead screw, a first motor is fixedly connected to one end of the first lead screw, and the movable plate is fixedly connected to the first movable block; A water supply component, wherein the water supply component comprises a water storage tank, wherein the water storage tank stores water for cleaning the photovoltaic panels.

2. A photovoltaic panel cleaning device according to claim 1, characterized in that: A placement groove is provided on the lower end surface of the movable plate, and the cleaning cloth is bonded to the bottom wall of the placement groove.

3. A photovoltaic panel cleaning device according to claim 2, characterized in that: A partition is fixedly connected inside the water storage tank, a water storage space is formed between the partition and the bottom wall of the water storage tank, a first water pump is installed on the water storage tank, and a fourth water pipe and a fifth water pipe are fixedly connected to the first water pump.

4. A photovoltaic panel cleaning device according to claim 3, characterized in that: A first water pipe is fixedly connected to one side wall of the movable plate, a water storage cavity connected to the first water pipe is provided in the movable plate, a second water pipe is inserted into the first water pipe, a third water pipe is slidably connected to the second water pipe, and the inner diameter of the third water pipe matches the outer diameter of the fifth water pipe.

5. A photovoltaic panel cleaning device according to claim 4, characterized in that: The movable plate is provided with a first water spray port and a second water spray port, wherein the second water spray port penetrates through the bottom wall of the placement slot, and the second water spray port is communicated with the water storage cavity.

6. A photovoltaic panel cleaning device according to claim 4, characterized in that: A third motor is installed on the movable plate, a second lead screw is rotatably connected to the third motor, a second movable block is meshed and transmitted on the second lead screw, a connecting column is integrally formed on the second movable block, and one end of the connecting column away from the second movable block is fixedly connected to the third water conduit.

7. A photovoltaic panel cleaning device according to claim 3, characterized in that: A mixing box and a second water pump are fixedly connected to the partition, and a sixth water pipe and a seventh water pipe are integrally formed on the second water pump. The sixth water pipe penetrates the partition and is inserted into the water storage space, and the seventh water pipe penetrates the side wall of the mixing box and is inserted into the mixing box.

8. A photovoltaic panel cleaning device according to claim 7, characterized in that: The fourth water conduit passes through the upper panel of the mixing box and is inserted into the mixing box.

9. A photovoltaic panel cleaning device according to claim 8, characterized in that: A second motor is installed in the water tank, and a rotating rod is rotatably connected to the second motor. The rotating rod penetrates the upper panel of the water tank, and an end of the rotating rod away from the second motor is fixedly connected to an impeller.

10. A photovoltaic panel cleaning device according to claim 9, characterized in that: A heating wire is installed in the mixing box.

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