Solar photovoltaic panel self-cleaning device
By installing rain sensors on solar photovoltaic panels to drive micro-motors that power winches and rope systems, automatic cleaning of the photovoltaic panels is achieved. This solves the problem of reduced power generation efficiency caused by dust and dirt accumulation, improves power generation efficiency, and extends the life of photovoltaic cells.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-09-25
- Publication Date
- 2026-04-10
AI Technical Summary
Dust and dirt buildup on the surface of solar photovoltaic panels leads to reduced power generation efficiency and shortened lifespan of photovoltaic cells, and existing technologies are insufficient for effective cleaning.
Design a self-cleaning device for solar photovoltaic panels. Utilize a rain sensor to detect rainwater signals, and use a micro-motor to drive a winch and rope system to move a brush up and down on the surface of the photovoltaic panel, thus achieving automatic cleaning.
It improves the power generation efficiency of solar photovoltaic panels, reduces the frequency and hassle of manual cleaning, and extends the lifespan of photovoltaic cells.
Smart Images
Figure CN121841264A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of solar photovoltaic panels, in particular to a self-cleaning device for solar photovoltaic panels. BACKGROUND
[0002] A solar photovoltaic panel is a device that converts solar energy into electrical energy. It is usually composed of multiple solar cells, each of which is made of a semiconductor material such as silicon. When sunlight shines on a solar cell, it generates an electric current and voltage through the photovoltaic effect.
[0003] Solar photovoltaic panels are generally installed outdoors and exposed to the natural environment. Long-term exposure to the natural environment can cause dust, airborne particulate matter, and other dirt to accumulate on the surface of the solar photovoltaic panel. The accumulation of dust and dirt can cause light to be reflected and refracted, preventing some of the light from being absorbed by the photovoltaic cells, which reduces the efficiency of the solar photovoltaic panel and can also cause the surface temperature of the solar photovoltaic panel to rise, which can reduce the lifespan of the photovoltaic cells. SUMMARY
[0004] To this end, the present application provides a self-cleaning device for solar photovoltaic panels to solve the problem of low power generation efficiency caused by the accumulation of dirt on the surface of the solar photovoltaic panel in the prior art.
[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions:
[0006] A self-cleaning device for solar photovoltaic panels, comprising a base, a mounting bracket, and a solar photovoltaic panel, the mounting bracket is fixedly arranged on the base, and the solar photovoltaic panel is fixedly arranged on the mounting bracket at an angle; a hollow frame is installed around the solar photovoltaic panel, two long frames are installed along the length direction of the solar photovoltaic panel, and two short frames are installed along the width direction of the solar photovoltaic panel, a sliding groove is formed on each long frame, a sliding block is arranged in each sliding groove, a brush is movably arranged on the surface of the solar photovoltaic panel along the width direction, and the two ends of the brush are fixedly connected to the two sliding blocks, respectively.
[0007] Two ends of the two short frames are respectively provided with pulleys, the back surface of the solar photovoltaic panel is fixedly provided with a first micro motor and a second micro motor at the upper end and the lower end, a first winch is fixedly installed on the output shaft of the first micro motor, a second winch is fixedly installed on the output shaft of the second micro motor, two ropes are wound on the first winch and the second winch, the two ropes on the first winch are fixedly connected with the upper ends of the two sliding blocks through the two pulleys in the upper end of the short frame, and the two ropes on the second winch are fixedly connected with the lower ends of the two sliding blocks through the two pulleys in the lower end of the short frame.
[0008] A rainwater sensor is fixedly arranged on the solar photovoltaic panel, and a control circuit board is arranged at the center of the back surface of the solar photovoltaic panel, and the rainwater sensor, the first micro motor and the second micro motor are electrically connected with the control circuit board.
[0009] Further, two pulleys are further fixedly arranged in the middle of the two short frames, and the two ropes are fixedly connected with the upper ends or the lower ends of the two sliding blocks through the two pulleys in the middle and the two pulleys at the two ends.
[0010] Further, the first micro motor is fixedly connected with the first winch through a first speed increasing and reducing device, and the second micro motor is fixedly connected with the second winch through a second speed increasing and reducing device.
[0011] Further, the hollow frame is an aluminum alloy hollow square tube.
[0012] Further, the rainwater sensor is a radar type rainwater sensor, a photoelectric type rainwater sensor, a capacitive type rainwater sensor or a sound wave type rainwater sensor.
[0013] Further, a charging battery is further arranged, the charging battery is arranged at the center of the back surface of the solar photovoltaic panel, an input end of the charging battery is electrically connected with the solar photovoltaic panel, and an output end of the charging battery is electrically connected with the control circuit board.
[0014] Further, the charging battery is provided with two charging batteries.
[0015] Further, a distribution box is further arranged, the charging battery and the control circuit board are arranged in the distribution box.
[0016] Compared with the prior art, the application has at least the following beneficial effects:
[0017] This application provides a self-cleaning device for solar photovoltaic panels, including a solar photovoltaic panel with a rain sensor fixedly mounted on it. A hollow frame is installed around the perimeter of the solar photovoltaic panel, with pulleys at each of the four corners of the hollow frame. Sliding grooves are formed on two long frame sections, and sliders are installed within these grooves. Two sliders fix a brush to the surface of the solar photovoltaic panel. A micro-motor, a winch, and a control circuit board are located on the back of the solar photovoltaic panel. A rope is wound around the winch and is fixedly connected to the sliders via pulleys. The self-cleaning device for solar photovoltaic panels provided by this application can automatically control the brush to clean the solar photovoltaic panel during rain, thereby improving power generation efficiency and reducing the hassle of manual cleaning. Attached Figure Description
[0018] To more intuitively illustrate the prior art and this application, several exemplary figures are provided below. It should be understood that the specific shapes and structures shown in the figures should not generally be regarded as limiting conditions for implementing this application; for example, based on the technical concept disclosed in this application and the exemplary figures, those skilled in the art are able to easily make conventional adjustments or further optimizations to the addition / reduction / classification, specific shapes, positional relationships, connection methods, size ratios, etc. of certain units (components).
[0019] Fig. 1 This application provides a first structural schematic diagram of a self-cleaning device for solar photovoltaic panels.
[0020] Fig. 2 A schematic diagram of the surface structure of a solar photovoltaic panel for a self-cleaning device provided in this application;
[0021] Fig. 3 This is a schematic diagram of the second structure of a self-cleaning device for solar photovoltaic panels provided in this application;
[0022] Fig. 4 This is a schematic diagram of the back structure of a solar photovoltaic panel for a self-cleaning device provided in this application.
[0023] Explanation of reference numerals in the attached figures:
[0024] 1. Base; 2. Mounting bracket; 3. Solar photovoltaic panel; 4. Hollow frame; 41. Long frame; 411. Slide groove; 412. Slider; 42. Short frame; 5. Brush; 6. Pulley; 7. First micro motor; 8. Second micro motor; 9. First winch; 10. Second winch; 11. Rain sensor; 12. Distribution box; 13. First speed reduction and torque increase device; 14. Second speed reduction and torque increase device. Detailed Implementation
[0025] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0026] In the description of this application: unless otherwise stated, "a plurality of" means two or more. The terms "first," "second," "third," etc., in this application are intended to distinguish the objects referred to and do not have any special meaning in terms of technical connotation (e.g., they should not be construed as an emphasis on importance or order). Expressions such as "comprising," "including," and "having" also mean "not limited to" (certain units, components, materials, steps, etc.).
[0027] The terms used in this application, such as "upper," "lower," "left," "right," and "middle," are generally used to facilitate intuitive understanding by referring to the accompanying drawings, and are not absolute limitations on the positional relationships in the actual product. Changes in these relative positional relationships, without departing from the technical concept disclosed in this application, should also be considered within the scope of this application.
[0028] Please see Figs. 1 to 4 This application provides a self-cleaning device for solar photovoltaic panels, including a base 1, a mounting frame 2 and a solar photovoltaic panel 3. The mounting frame 2 is fixedly mounted on the base 1, and the solar photovoltaic panel 3 is tilted and fixedly mounted on the mounting frame 2.
[0029] Hollow frames 4 are installed around the solar photovoltaic panel 3. The two hollow frames 4 in the length direction of the solar photovoltaic panel 3 are long frames 41, and the two hollow frames 4 in the width direction of the solar photovoltaic panel 3 are short frames 42. Slide grooves 411 are opened on the two long frames 41, and sliders 412 are set in the slide grooves 411. A brush 5 is movably arranged on the surface of the solar photovoltaic panel 3 in the width direction. The two ends of the brush 5 are fixedly connected to the two sliders 412 respectively.
[0030] Two pulleys 6 are respectively provided at both ends of the two short frame 42 (i.e., inside the four corners of the hollow frame 4). The upper and lower ends of the back of the solar photovoltaic panel 3 are respectively fixedly installed with a first micro motor 7 and a second micro motor 8. A first winch 9 is fixedly installed on the output shaft of the first micro motor 7, and a second winch 10 is fixedly installed on the output shaft of the second micro motor 8. Two ropes are wound on both the first winch 9 and the second winch 10. The two ropes on the first winch 9 are fixedly connected to the upper ends of the two sliders 412 through the two pulleys 6 in the upper short frame 42, and the two ropes on the second winch 10 are fixedly connected to the lower ends of the two sliders 412 through the two pulleys 6 in the lower short frame 42.
[0031] A rain sensor 11 is fixedly installed on the solar photovoltaic panel 3. A control circuit board is located in the center of the back of the solar photovoltaic panel 3. The rain sensor 11, the first micro motor 7, and the second micro motor 8 are all electrically connected to the control circuit board.
[0032] In the self-cleaning device for solar photovoltaic panels provided in this application, two pulleys 6 are fixedly installed in the middle of the two short frames 42. The two ropes pass through the two pulleys 6 in the middle and then through the two pulleys 6 at both ends to be fixedly connected to the upper or lower ends of the two sliders 412 respectively, so as to facilitate the sliding of the ropes in the hollow frame 4.
[0033] The self-cleaning device for solar photovoltaic panels provided in this application also includes a first speed reduction and torque increase device 13 and a second speed reduction and torque increase device 14. The first micro motor 7 is fixedly connected to the first winch 9 through the first speed reduction and torque increase device 13, and the second micro motor 8 is fixedly connected to the second winch 10 through the second speed reduction and torque increase device 14. The basic principle of the speed reduction and torque increase device is to change the speed ratio between the input shaft and the output shaft by using components such as gears, transmission belts or chains.
[0034] In the self-cleaning device for solar photovoltaic panels provided in this application, the hollow frame 4 is preferably an aluminum alloy hollow square tube.
[0035] In the self-cleaning device for solar photovoltaic panels provided in this application, the rain sensor 11 can be a radar-type rain sensor, a photoelectric rain sensor, a capacitive rain sensor, or an acoustic rain sensor. A radar-type rain sensor uses radar technology to detect nearby raindrops by sending and receiving microwave signals. When a raindrop reflects the microwave signal, the sensor can trigger and detect the presence of rainwater. A photoelectric rain sensor uses photosensitive elements (such as photodiodes, photoresistors, etc.) to sense raindrops. When a raindrop contacts or blocks the photoelectric element, the intensity of the photoelectric signal changes, allowing the sensor to detect the presence of rainwater. A capacitive rain sensor uses the principle of capacitance to sense raindrops, detecting falling raindrops by the change in capacitance between two electrodes. When rainwater falls, the capacitance changes, and the sensor can detect this change. An acoustic rain sensor detects raindrops by sending and receiving ultrasonic signals. When an ultrasonic signal encounters a raindrop, an echo is generated, and the sensor can determine the presence of rainwater based on the echo duration.
[0036] The self-cleaning device for solar photovoltaic panels provided in this application also includes a rechargeable battery. The input end of the rechargeable battery is electrically connected to the solar photovoltaic panel 3, and the output end of the rechargeable battery is electrically connected to the control circuit board. In order to ensure that the entire device can work normally for a long time, two rechargeable batteries can be provided.
[0037] In order to protect the control circuit board and the rechargeable battery, the self-cleaning device for solar photovoltaic panels provided in this application places the control circuit board and the rechargeable battery inside the distribution box 12, and installs the distribution box 12 on the back of the solar photovoltaic panel 3.
[0038] The self-cleaning device for solar photovoltaic panels provided in this application collects rainwater signals from the rain sensor 11 and transmits them to the control circuit board. Upon receiving the signal, the control circuit board drives the first micro motor 7 to rotate forward or reverse, and drives the second micro motor 8 to rotate in reverse or forward. The forward or reverse rotation of the micro motors drives the winch to rotate, and the rotation of the winch drives the rope to pull the slider 412 up and down at a constant speed, which in turn drives the brush 5 on the surface of the solar photovoltaic panel 3 to move up and down reciprocally, thereby achieving the self-cleaning purpose of the solar photovoltaic panel, improving power generation efficiency, and saving the trouble of manually cleaning the solar photovoltaic panel 3.
[0039] The technical features of the above embodiments can be combined in any way (as long as there is no contradiction in the combination of these technical features). For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described; these embodiments not explicitly written should also be considered to be within the scope of this specification.
[0040] The present application has been described in a relatively specific and detailed manner above through general descriptions and specific embodiments. It should be understood that, based on the technical concept of the present application, several conventional adjustments or further innovations can be made to these specific embodiments; however, as long as they do not depart from the technical concept of the present application, the technical solutions obtained by these conventional adjustments or further innovations also fall within the protection scope of the claims of the present application.
Claims
1. A self-cleaning device for solar photovoltaic panels, characterized in that, The device includes a base, a mounting frame, and a solar photovoltaic panel. The mounting frame is fixedly mounted on the base, and the solar photovoltaic panel is tilted and fixedly mounted on the mounting frame. Hollow frames are installed around the solar photovoltaic panel. The two hollow frames along the length of the solar photovoltaic panel are long frames, and the two hollow frames along the width of the solar photovoltaic panel are short frames. Each of the two long frames has a groove, and a slider is installed in each groove. A brush is movably installed on the surface of the solar photovoltaic panel along its width, and the two ends of the brush are fixedly connected to the two sliders respectively. Each end of the two short frames is provided with a pulley. A first micro motor and a second micro motor are fixedly installed at the upper and lower ends of the back of the solar photovoltaic panel, respectively. A first winch is fixedly installed on the output shaft of the first micro motor, and a second winch is fixedly installed on the output shaft of the second micro motor. Two ropes are wound on both the first winch and the second winch. The two ropes on the first winch are fixedly connected to the upper ends of the two sliders through the two pulleys in the upper short frame, and the two ropes on the second winch are fixedly connected to the lower ends of the two sliders through the two pulleys in the lower short frame. A rain sensor is fixedly installed on the solar photovoltaic panel, and a control circuit board is located in the center of the back of the solar photovoltaic panel. The rain sensor, the first micro motor, and the second micro motor are all electrically connected to the control circuit board.
2. The self-cleaning device for solar photovoltaic panels according to claim 1, characterized in that, Two pulleys are fixedly installed in the middle of the two short frames. The two ropes pass through the two middle pulleys and then through the two end pulleys respectively to be fixedly connected to the upper or lower ends of the two sliders.
3. The self-cleaning device for solar photovoltaic panels according to claim 1, characterized in that, It also includes a first speed reduction and torque increase device and a second speed reduction and torque increase device. The first micro motor is fixedly connected to the first winch through the first speed reduction and torque increase device, and the second micro motor is fixedly connected to the second winch through the second speed reduction and torque increase device.
4. The self-cleaning device for solar photovoltaic panels according to claim 1, characterized in that, The hollow frame is made of hollow aluminum alloy square tubing.
5. The self-cleaning device for solar photovoltaic panels according to claim 1, characterized in that, The rain sensor can be a radar rain sensor, a photoelectric rain sensor, a capacitive rain sensor, or an acoustic rain sensor.
6. The self-cleaning device for solar photovoltaic panels according to claim 1, characterized in that, It also includes a rechargeable battery, which is installed in the center of the back of the solar photovoltaic panel. The input terminal of the rechargeable battery is electrically connected to the solar photovoltaic panel, and the output terminal of the rechargeable battery is electrically connected to the control circuit board.
7. The self-cleaning device for solar photovoltaic panels according to claim 6, characterized in that, The rechargeable battery has two components.
8. The self-cleaning device for solar photovoltaic panels according to claim 7, characterized in that, It also includes a distribution box, in which the rechargeable battery and the control circuit board are housed.