Automatic cleaning device for power generation panel of photovoltaic power generation equipment

Abstract

The utility model discloses an automatic cleaning device for a power generation panel of photovoltaic power generation equipment, which comprises the power generation panel, a transverse frame and machine heads arranged at the left end and the right end of the transverse frame, walking mechanisms capable of moving on the power generation panel are arranged on the two machine heads, a PCB (printed circuit board) mainboard is accommodated in one machine head, and the other machine head is arranged on the other machine head. Edge detection mechanisms are arranged at the front end and the rear end of the power generation plate, each edge detection mechanism comprises a mounting plate, a first optoelectronic switch and a second optoelectronic switch, the first optoelectronic switches and the second optoelectronic switches are arranged on the mounting plate at intervals, the first optoelectronic switches and the second optoelectronic switches are coaxially arranged, and the distance between the first optoelectronic switches and the second optoelectronic switches is larger than the distance between the adjacent power generation plates; the walking mechanism, the first optoelectronic switch and the second optoelectronic switch are all controlled by the PCB main board, when the first optoelectronic switch and the second optoelectronic switch do not detect signals, the walking mechanism stops moving, according to the design scheme, the problem that the cleaning robot stops mistakenly is solved, and the cleaning robot is convenient to use. And therefore, the cleaning effect on the power generation panel can be ensured.

Description

Technical Field

[0001] This utility model belongs to the field of photovoltaic power generation equipment maintenance technology, specifically an automatic cleaning device for photovoltaic power generation equipment panels. Background Technology

[0002] Photovoltaic panels are devices that convert sunlight into electricity. They are widely used globally to reduce dependence on fossil fuels, provide renewable energy, and reduce environmental pollution. However, the surface of photovoltaic panels is prone to dust and dirt accumulation and requires regular cleaning.

[0003] For example, Chinese patent CN106000955B discloses a solar panel cleaning robot. It includes a basic frame, brushes, an electrical control box, and an intelligent control system. This invention provides a solar panel cleaning robot suitable for the current state of solar energy and has broad market potential. However, in practical use, it has been found that the solar panel cleaning robot relies on limit switches to identify whether it has reached the edge of the solar panel array during the cleaning process. Because there is a certain gap between adjacent solar panels, the limit switches are prone to false sensing, causing the cleaning robot to stop unnecessarily as it moves along the solar panel array, thus affecting the cleaning effect. Utility Model Content

[0004] The purpose of this utility model is to provide an automatic cleaning device for photovoltaic power generation equipment in order to solve the problems mentioned above.

[0005] The technical solution adopted by this utility model is as follows: An automatic cleaning device for photovoltaic power generation panels includes a power generation panel, a cross frame, and machine heads installed at the left and right ends of the cross frame. Each machine head is equipped with a walking mechanism that can move on the power generation panel. One of the machine heads houses a PCB motherboard and has edge detection mechanisms at its front and rear ends. The edge detection mechanism includes a mounting plate and a first photoelectric switch and a second photoelectric switch spaced apart on the mounting plate. The first and second photoelectric switches are coaxially arranged, and the distance between them is greater than the distance between adjacent power generation panels. The walking mechanism, the first photoelectric switch, and the second photoelectric switch are all controlled by the PCB motherboard. When neither the first nor the second photoelectric switch detects a signal, the walking mechanism stops moving.

[0006] In a preferred embodiment, the mounting plate is screwed onto the outer wall of the machine head. The horizontal portion of the mounting plate is provided with two oblong holes that allow the first photoelectric switch and the second photoelectric switch to pass through, respectively. The housings of the first photoelectric switch and the second photoelectric switch are provided with external threads. A locking nut located below the oblong hole is threaded onto the external thread. The width of the locking nut is greater than the width of the oblong hole.

[0007] In a preferred embodiment, the walking mechanism includes four walking wheels and guide wheels. The four walking wheels are arranged in pairs on both sides of the bottom of the two machine heads. The four walking wheels are all located on the top wall of the generator plate. Each of the two machine heads is equipped with a stepper motor connected to the walking wheels. The four guide wheels are movably arranged in pairs on the two machine heads. The four guide wheels are located in pairs on the outer wall of the left and right ends of the generator plate.

[0008] In a preferred embodiment, two rinsing pipes are symmetrically arranged below the crossbeam. Each of the two rinsing pipes is provided with a plurality of self-rotating spray washing components spaced apart along its length. The self-rotating spray washing components on the two rinsing pipes are inclined downward and arranged in opposite directions.

[0009] In a preferred embodiment, the self-rotating spray washing assembly includes a rotary joint, a connecting pipe, and a plurality of spray washing pipes circumferentially disposed on the outer wall of the connecting pipe. The fixed part of the rotary joint is connected to the flushing pipe, and the rotating part of the rotary joint is connected to the flushing pipe. The spray washing pipe has a plurality of outwardly inclined spray nozzles at intervals.

[0010] In a preferred embodiment, a booster water pump is provided inside one of the machine heads, the outlet of the booster water pump is connected to the flushing pipe, and the inlet of the booster water pump is provided with a water supply connector extending out of the machine head.

[0011] In a preferred embodiment, a roller brush is also provided below the crossbeam and attached to the upper surface of the generator plate. The roller brush is located below the gap between the two flushing pipes, and the two ends of the roller brush are rotated to the opposite ends of the two machine heads. One of the machine heads is equipped with a motor and a reducer. The output end of the motor is connected to the input end of the reducer, and the output end of the reducer is connected to one end of the roller brush.

[0012] In a preferred embodiment, a solar power generation module is also provided on the crossbeam.

[0013] In a preferred embodiment, one of the heads is further provided with control buttons, a wireless transceiver electrically connected to the PCB motherboard, and several transmission interfaces.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0015] 1. In this utility model, two photoelectric switches with a spacing greater than that between adjacent photovoltaic panels are designed. During the cleaning process of the cleaning robot moving and cleaning within the range of the photovoltaic panel array, at least one photoelectric switch can be guaranteed to receive the signal returned by the photovoltaic panel. When the edge detection mechanism of the cleaning robot exceeds the range of the photovoltaic panel array, neither of the two photoelectric switches can receive the signal returned by the photovoltaic panel, and the robot will automatically stop moving. This will prevent the cleaning robot from stopping erroneously, reduce manual intervention, and improve the efficiency of cleaning photovoltaic panels for customers to a certain extent.

[0016] 2. In this utility model, multiple self-rotating nozzle structures are designed on the rinsing part of the cleaning device. During the rinsing process, the nozzle structures can rotate automatically, thereby ensuring the uniformity of spraying the power generation panel and improving the subsequent cleaning effect. Moreover, during the rotation, a certain amount of wind force can be generated, which can blow away some small hard objects such as small pebbles, so that they will not affect the power generation panel itself during subsequent cleaning. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the entire utility model;

[0018] Figure 2 This is a simplified frontal planar view of the overall structure of this utility model;

[0019] Figure 3 for Figure 1 A simplified diagram of the enlarged structure at point A in the middle;

[0020] Figure 4 This is a simplified three-dimensional structural diagram of the self-rotating spray washing component in this utility model;

[0021] Figure 5 This is a simplified schematic diagram of the partial cross-sectional planar structure of this utility model.

[0022] The markings in the diagram are: 1-Head unit, 2-Transmission interface, 3-Solar power generation module, 4-Guide wheel, 5-Water supply connector, 6-Horizontal frame, 7-Wireless transceiver, 8-Power generation board, 9-Walking wheel, 10-Flushing pipe, 11-Self-rotating spray washing assembly, 111-Rotary joint, 112-Connecting pipe, 113-Spray washing pipe, 114-Spray washing nozzle, 12-Roller brush, 13-First photoelectric switch, 14-Mounting plate, 15-Second photoelectric switch, 16-Locking nut, 17-Oval hole, 18-Reducer, 19-Booster water pump, 20-Motor, 21-PCB motherboard. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0024] Reference Figure 1-5 An automatic cleaning device for photovoltaic power generation panels includes a photovoltaic panel 8, a crossbeam 6, and two machine heads 1 installed at the left and right ends of the crossbeam 6. Each machine head 1 is equipped with a walking mechanism that can move on the photovoltaic panel 8. One machine head 1 houses a PCB motherboard 21 and has edge detection mechanisms at its front and rear ends. The edge detection mechanism includes a mounting plate 14 and a first photoelectric switch 13 and a second photoelectric switch 15 spaced apart on the mounting plate 14. The first photoelectric switch 13 and the second photoelectric switch 15 are coaxially arranged, and the distance between them is greater than the distance between adjacent photovoltaic panels 8. The walking mechanism, the first photoelectric switch 13, and the second photoelectric switch 15 are all controlled by the PCB motherboard 21. When the first photoelectric switch 13 and the second photoelectric switch 15 are moved on the photovoltaic panel 8, the device will automatically clean the photovoltaic panel 8. When neither of the second photoelectric switches 15 detects a signal, the walking mechanism stops moving. Two photoelectric switches with a spacing greater than that between adjacent power generation panels 8 are designed. During the cleaning process of the cleaning robot moving and cleaning within the array of power generation panels 8, at least one photoelectric switch can be guaranteed to receive a signal returned by the power generation panels 8. When the edge detection mechanism of the cleaning robot exceeds the array range of power generation panels 8, neither of the two first photoelectric switches 13 nor the second photoelectric switch 15 will receive a signal returned by the power generation panels 8, and the robot will automatically stop moving. This prevents misjudgment that could cause the photovoltaic panel cleaning robot to stop working or work in reverse, reduces manual intervention, and improves the efficiency of cleaning power generation panels 8 for customers to a certain extent.

[0025] The spacing between the first photoelectric switch 13 and the second photoelectric switch 15 is preferably 1.5cm to 2.5cm larger than the spacing between adjacent power generation boards 8, but is not limited here.

[0026] In this embodiment, the mounting plate 14 is attached to the outer wall of the head 1 by screws. The horizontal portion of the mounting plate 14 has two spaced-apart oblong holes 17, each allowing the first photoelectric switch 13 and the second photoelectric switch 15 to pass through. Both the first and second photoelectric switches 13 and 15 have external threads on their housings, with locking nuts 16 threaded onto these threads and located below the oblong holes 17. The width of the locking nuts 16 is greater than the width of the oblong holes 17, allowing the spacing between the first and second photoelectric switches 13 and 15 to be adjusted according to the spacing between different generator plates 8, thereby improving overall applicability. When adjusting the spacing, simply loosen the locking nuts 16, and the first and second photoelectric switches 13 and 15 can move and adjust along the oblong holes 17. After adjustment, tighten the locking nuts 16. A scale (not shown in the figure) can be designed on one side of the oblong holes 17 on the horizontal portion of the mounting plate 14 to facilitate finding the designated position.

[0027] In this embodiment, the walking mechanism includes four walking wheels 9 and guide wheels 4. The four walking wheels 9 are arranged in pairs on both sides of the bottom of the two machine heads 1, and are located on the top wall of the power generation plate 8. Each of the two machine heads 1 is equipped with a stepper motor (not shown) connected to the walking wheels 9. The four guide wheels 4 are movably mounted in pairs on the two machine heads 1, located on the outer walls of the left and right ends of the power generation plate 8. The stepper motors can drive the walking wheels 9 to rotate, allowing them to move on the power generation plate 8. The guide wheels 4 help limit the movement position of the cleaning robot, preventing it from falling off the power generation plate 8. Since the rotation angle of the stepper motor is proportional to the number of pulses, the position can be controlled very precisely. The walking wheels 9 are fitted with anti-slip tires.

[0028] In this embodiment, two rinsing pipes 10 are symmetrically arranged below the crossbeam 6. Each rinsing pipe 10 has multiple self-rotating spray washing components 11 spaced apart along its length. The self-rotating spray washing components 11 on the two rinsing pipes 10 are inclined downwards and arranged opposite each other. Each self-rotating spray washing component 11 includes a rotary joint 111, a connecting pipe 112, and multiple spray washing pipes 113 circumferentially arranged on the outer wall of the connecting pipe 112. The fixing part of the rotary joint 111 is connected to the rinsing pipe 10, and the rotating part of the rotary joint 111 is connected to the rinsing pipe 10. Multiple outwardly inclined spray washing pipes are spaced apart on the spray washing pipes 113. The nozzle 114 is designed with multiple self-rotating spray cleaning components 11 on the flushing pipe 10 of the cleaning device. During the flushing process, when the water flows out through the spray nozzle 114, the water sprayed from the spray nozzle 114 will provide a reaction force to the spray pipe 113 under the pressure of the angle of the spray nozzle 114 and the water pressure, which will drive the spray pipe 113 to rotate. This can ensure the uniformity of spray cleaning of the generator plate 8 and improve the subsequent cleaning effect. Moreover, during the rotation, a certain amount of wind can be generated, which can blow away some small hard objects such as small stones, so that they will not affect the generator plate itself during subsequent cleaning.

[0029] Preferably, the atomizing nozzle 32 has an inclination angle of 45° to 60°, and there are two spray pipes 113, but this is not limited here; there may also be three or more.

[0030] In this embodiment, a vehicle is installed inside one of the machine heads 1. The outlet of the booster water pump 19 is connected to the flushing pipe 10, and the inlet of the booster water pump 19 is provided with a water supply connector 5 extending out of the machine head 1. The water supply connector 5 can be connected to an external water supply system (not shown in the figure). The external water supply system includes a water tank, hoses, etc. The booster water pump 19 draws water from the water supply system into the flushing pipe 10, and then sprays it out through the self-rotating spray washing assembly 11 for cleaning. In some embodiments, a water tank connected to the booster water pump 19 and the water supply connector 5 can also be reserved inside the machine head 1. Before use, cleaning water can be added to the reserved water tank.

[0031] An electric three-way valve (not shown in the figure) is designed between the booster water pump 19 and the two sets of flushing pipes 10. The connection between one set of flushing pipes 10 and the booster water pump 19 is adjusted according to the direction of movement of the cleaning device.

[0032] In this embodiment, a roller brush 12 is also provided below the cross frame 6, which is in contact with the upper surface of the generator plate 8. The roller brush 12 is located below the gap between the two flushing pipes 10. The two ends of the roller brush 12 are rotated to the opposite ends of the two machine heads 1. One of the machine heads 1 is equipped with a motor 20 and a reducer 18. The output end of the motor 20 is connected to the input end of the reducer 18, and the output end of the reducer 18 is connected to one end of the roller brush 12. After spraying, the roller brush 12 is driven to rotate by the motor 20, so that the generator plate 8 can be automatically cleaned by the roller brush 12. At the same time, the reducer 18 is designed to match the speed and transmit the torque, so as to ensure the rotation effect of the roller brush 12.

[0033] In this embodiment, a solar power generation module 3 is also provided on the cross frame 6. The solar power generation module 3 includes a solar panel, an inverter, a transmission line, etc., which are existing technologies and will not be described in detail here. A battery (not shown in the figure) is also provided in the cross frame 6 or the head unit 1, which is electrically connected to the solar power generation module 3 and the PCB motherboard 21. The solar power generation module 3 can provide power to the cleaning equipment. Of course, an external power source can also be used to provide power to the cleaning equipment.

[0034] In this embodiment, one of the machine heads 1 is also equipped with a control button, a wireless transceiver 7 electrically connected to the PCB motherboard 21, and several transmission interfaces 2. The designed transmission interfaces 2 can be connected to an external power supply or a control handle (not shown in the figure). The wireless transceiver 7 can be an antenna, Bluetooth, etc., and can be wirelessly connected to an external control terminal (such as a mobile phone, computer, etc.) to realize wireless control of the cleaning device.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic cleaning device for photovoltaic power generation panels, characterized in that, The utility model provides a kind of solar panel cleaning machine, including power generation plate (8), cross frame (6) and the head (1) of being installed in the left and right ends of cross frame (6), two the head (1) is equipped with walking mechanism on the power generation plate (8) can be moved, one of the head (1) is housed in PCB mainboard (21), and edge detection mechanism is provided at its front and back end, the edge detection mechanism includes mounting plate (14) and first photoelectric switch (13) and second photoelectric switch (15) spaced apart on mounting plate (14), first photoelectric switch (13) and second photoelectric switch (15) are coaxially arranged, and the interval of two is greater than the interval between adjacent power generation plate (8), walking mechanism, first photoelectric switch (13) and second photoelectric switch (15) are all controlled to PCB mainboard (21), when first photoelectric switch (13) and second photoelectric switch (15) are not detected signal, then walking mechanism stops movement.

2. The apparatus according to claim 1, wherein the apparatus is characterized by: The mounting plate (14) is locked on the outer wall of the head (1) by screw, the horizontal part of the mounting plate (14) is spaced apart to have two waist-shaped holes (17) that the first photoelectric switch (13) and the second photoelectric switch (15) pass through respectively, the outer shell of the first photoelectric switch (13) and the second photoelectric switch (15) is provided with external threads, the external threads are threadedly connected with the locking nut (16) below the waist-shaped hole (17), and the width of the locking nut (16) is greater than the width of the waist-shaped hole (17).

3. The apparatus according to claim 1, wherein the apparatus is characterized by: a plurality of the cleaning members; a plurality of the driving members; and a plurality of the driving units, each of the driving units being connected to the driving members of the cleaning members in the same row. The walking mechanism includes four walking wheels (9) and guide wheels (4), the four walking wheels (9) are arranged on the bottom of the two heads (1) in pairs, the four walking wheels (9) are located on the top wall of the power generation plate (8), the two heads (1) are provided with a stepping motor connected with the walking wheel (9), and the four guide wheels (4) are movably arranged on the two heads (1) in pairs.

4. The automatic cleaning device for photovoltaic power generation panels as described in claim 1, characterized in that: Two flush pipes (10) are symmetrically arranged below the cross frame (6), a plurality of self-rotating spray assemblies (11) are spaced apart on the two flush pipes (10) along the length direction, and the self-rotating spray assemblies (11) on the two flush pipes (10) are downwardly inclined and oppositely arranged.

5. The apparatus according to claim 4, wherein: the cleaning member is a brush having a plurality of bristles; and the cleaning member is arranged to be moved in a direction perpendicular to the surface of the panel. 5 The self-rotating spray assembly (11) includes a rotary joint (111), a connecting pipe (112), and a plurality of spray pipes (113) circumferentially arranged on the outer wall of the connecting pipe (112), the fixed part of the rotary joint (111) is connected with the flush pipe (10), the rotating part of the rotary joint (111) is connected with the flush pipe (10), and the spray pipe (113) is provided with a plurality of outwardly inclined spray ports (114) at intervals.

6. The apparatus according to claim 4, wherein the apparatus is characterized by: a plurality of the cleaning members; and a plurality of the driving members, each of which is connected to one of the cleaning members and is configured to drive the cleaning member to rotate around the axis of rotation. One of the heads (1) is provided with a booster water pump (19), the outlet of the booster water pump (19) is connected with the flush pipe (10), and the inlet of the booster water pump (19) is provided with a water replenishing connector (5) extending out of the head (1).

7. The apparatus according to claim 4, wherein: the cleaning member is a brush. The lower part of the transverse frame (6) is provided with a roller brush (12) which is attached to the upper surface of the power generation plate (8), and is located below the gap between the two flushing pipes (10), and the two ends of the roller brush (12) are rotatably connected to the opposite ends of the two machine heads (1), and one of the machine heads (1) is internally provided with a motor (20) and a speed reducer (18), the output end of the motor (20) is connected to the input end of the speed reducer (18), and the output end of the speed reducer (18) is connected to one end of the roller brush (12).

8. The apparatus according to claim 1, wherein: the apparatus is characterized by: a plurality of cleaning elements; and a plurality of cleaning element actuators, each of the plurality of cleaning element actuators being coupled to one of the plurality of cleaning elements. The transverse frame (6) is further provided with a solar power generation module (3).

9. The apparatus of claim 1, wherein: the apparatus further comprises a cleaning device for cleaning the panel. One of the machine heads (1) is further provided with a control button, a wireless transceiver (7) and a plurality of transmission interfaces (2) which are electrically connected to the PCB mainboard (21).

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