Device for cleaning photovoltaic panel

Abstract

According to the device for cleaning the photovoltaic panel, ice and snow are cleaned through the cleaning device provided with the scraper and the nozzle with the heating wire, the cleaning device is further provided with the brush provided with the hose and the spring, and the brush has certain flexibility when moving on the photovoltaic panel, so that the photovoltaic panel can be cleaned conveniently. A gap at the connection part of the photovoltaic panel can be cleaned, and the transmission device which rotates intermittently can be stopped for a certain period of time, so that a spray head heats and melts ice and snow to clean the ice and snow; by the adoption of the technical scheme, the ice and snow cleaning effect and cleaning efficiency on the photovoltaic panels are effectively improved, and gaps between the photovoltaic panels or concave positions of the photovoltaic panels are effectively cleaned.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic power generation cleaning devices, in particular to a device for cleaning photovoltaic panels. Background Art

[0002] Photovoltaic panels, also known as solar panels or solar panels, are devices that convert sunlight into electrical energy. They are the core component of solar power generation systems. Photovoltaic panels are renewable, clean, and environmentally friendly, and they do not produce emissions, noise, or volatile hazardous substances. Photovoltaic panels are usually installed on roofs, ground, or other suitable areas to maximize the use of sunlight resources. Photovoltaic panels are mainly composed of multiple solar cells, which are semiconductor devices that use the photoelectric effect to directly convert sunlight into electrical energy. These solar cells are connected together by connectors or welding to form a whole, forming a photovoltaic panel.

[0003] The Chinese invention patent with application number CN202110985326.4 discloses a self-cleaning solar panel, including a photovoltaic panel and a lamp post. Slideways are fixedly installed on both sides of the photovoltaic panel. A memory alloy spring is provided directly below the slider. A cleaning rod is provided above the surface of the photovoltaic panel. When the ambient temperature is higher than the critical point of the memory alloy spring, the memory alloy spring will contract, thereby driving the cleaning rod to complete the cleaning work on the surface of the photovoltaic panel. In this way, the photovoltaic panel can be cleaned at least twice a day when the weather is clear.

[0004] However, most photovoltaic panels are installed in places with sufficient sunlight. The northern part of my country has relatively sufficient sunlight, but the low temperature in winter makes it easy to freeze or snow, which will seriously affect the power generation efficiency of the photovoltaic panels. At this time, the above-mentioned cleaning method using plot rods and memory alloy springs will be less effective, or even lose its effect due to the obstruction of ice and snow, making it difficult to clean; and the photovoltaic panel connections are difficult to clean. Utility Model Content

[0005] The purpose of the utility model is to address the deficiencies in the above-mentioned technology and to propose a device for cleaning photovoltaic panels, aiming to solve the problem that ice and snow on the above-mentioned photovoltaic panels are difficult to clean and the gaps in the photovoltaic panels are difficult to clean.

[0006] The utility model provides a device for cleaning a photovoltaic panel, comprising a photovoltaic panel, a cleaning device for removing ice and snow and cleaning gaps on the photovoltaic panel, and a transmission device for controlling the cleaning device to move intermittently on the photovoltaic panel, the transmission device being arranged on an installation frame of the photovoltaic panel, the cleaning device being fixed on the transmission device, and the cleaning device being located on the upper surface of the photovoltaic panel.

[0007] Preferably, the cleaning device comprises a mounting plate, a scraper, a nozzle and an electric heating wire, wherein the scraper and the nozzle are mounted on the mounting plate, and the electric heating wire is located at the air inlet of the nozzle. The cleaning device also comprises a fixing sleeve, a hose, a brush, a spring, a fixing rod and a cotton cloth, wherein the fixing sleeve is fixedly connected to the mounting plate, one end of the hose is fixedly connected to the fixing sleeve, the other end of the hose is detachably connected to the brush, and the spring is arranged in the hose. A soft rubber strip is connected to the side of the scraper close to the photovoltaic panel. The nozzle heated by the electric heating wire sprays out a heat generator to melt the ice and snow, and is further cleaned with a scraper, a brush and a cotton cloth.

[0008] Preferably, the transmission device includes a rack, a gear and a limit sleeve, the limit sleeve is fixed to one end of the photovoltaic panel mounting frame, the rack is slidably inserted into the limit sleeve, the upper part of the rack is fixedly connected to the cleaning device, the gear is arranged at one end of the rack close to the limit sleeve, and the gear meshes with the teeth of the rack, so that the cleaning device can slide on the photovoltaic panel.

[0009] Preferably, the transmission device further comprises a driving wheel, a limiting wheel, a special-shaped driven wheel, a clamping strip, a clamping slot and a reversible motor, and a base for supporting the transmission device, the center of the driving wheel is fixedly connected to the output end of the reversible motor, the limiting wheel is fixedly connected to the driving wheel, the limiting wheel limits the position of the special-shaped driven wheel, the clamping strip is fixedly connected to the four points of the driving wheel, a plurality of clamping slots are evenly spaced on the special-shaped driven wheel, and the clamping strip and the clamping slot are meshed. The center of the special-shaped driven wheel is fixedly connected to the center of the gear, the edge of the special-shaped driven wheel is arc-shaped, the arc meshes with the edge of the limiting wheel, and the diameter of the limiting wheel is smaller than the diameter of the driving wheel. The intermittent sliding of the cleaning device on the photovoltaic panel is realized.

[0010] Preferably, one end of the mounting plate away from the transmission device is rotatably connected to a pulley, and the pulley is slidably matched with a slide rail fixedly connected to the photovoltaic panel mounting frame, thereby improving the stability of the removal device moving on the photovoltaic panel.

[0011] Preferably, the top end of the brush is connected to the hose by interference fit.

[0012] Compared with the prior art, it has the following beneficial effects:

[0013] The utility model provides a device for cleaning photovoltaic panels, which cleans ice and snow by arranging a cleaning device equipped with a scraper and a nozzle with a heating wire. The cleaning device is also provided with a brush equipped with a hose and a spring. The brush has a certain elasticity when moving on the photovoltaic panel, and can clean the gaps at the connection of the photovoltaic panel. The intermittently rotating transmission device can pause for a certain period of time to allow the nozzle to heat and melt the ice and snow for cleaning. The above technical scheme is adopted to effectively improve the cleaning effect and cleaning efficiency of ice and snow on the photovoltaic panel, and effectively clean the gaps between the photovoltaic panels or the depressions of the photovoltaic panels. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only preferred embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 It is a schematic diagram of a device for cleaning photovoltaic panels according to the utility model;

[0016] Figure 2 A schematic diagram of a cleaning device for cleaning photovoltaic panels of the utility model;

[0017] Figure 3 This is a schematic diagram of a transmission device of a device for cleaning photovoltaic panels according to the utility model;

[0018] Figure 4 This is a schematic diagram of a pulley and a slide rail of a device for cleaning photovoltaic panels according to the utility model;

[0019] Figure 5 The utility model is a schematic diagram of an infrared bulb of a device for cleaning photovoltaic panels.

[0020] In the figure, 1-photovoltaic panel; 2-cleaning device; 21-mounting plate; 221-scraper; 222-nozzle; 223-heating wire; 231-fixing sleeve; 232-hose; 233-brush; 234-spring; 235-fixing rod; 236-cotton cloth; 3-transmission device; 31-toothed ring; 32-gear; 33-limiting sleeve; 34-driving wheel; 35-limiting wheel; 36-special-shaped driven wheel; 37-card strip; 38-card slot; 39-reversible motor; 4-base; 5-pulley; 6-slide rail. DETAILED DESCRIPTION

[0021] In order to make it easier to understand the structure of the present invention and the functional features and advantages that can be achieved, the preferred embodiments of the present invention are described in detail with reference to the drawings as follows:

[0022] Example:

[0023] like Figures 1 to 5As shown, the utility model provides a device for cleaning a photovoltaic panel, comprising a photovoltaic panel 1, and a cleaning device 2 for removing ice and snow and cleaning gaps of the photovoltaic panel 1, and a transmission device 3 for controlling the cleaning device 2 to intermittently move on the photovoltaic panel 1, the transmission device 3 is arranged on the mounting frame of the photovoltaic panel 1, the cleaning device 2 is fixed on the transmission device 3, and the cleaning device 2 is located on the upper surface of the photovoltaic panel 1. The cleaning device 2 comprises a mounting plate 21, a scraper 221, a nozzle 222 and a heating wire 223, the scraper 221 and the nozzle 222 are mounted on the mounting plate 21, and the heating wire 223 is located at the air inlet of the nozzle 222. The cleaning device 2 further includes a fixing sleeve 231, a hose 232, a brush 233, a spring 234, a fixing rod 235 and a cotton cloth 236. The fixing sleeve 231 is fixedly connected to the mounting plate 21, one end of the hose 232 is fixedly connected to the fixing sleeve 231, the other end of the hose 232 is detachably connected to the brush 233, and the spring 234 is arranged in the hose 232. A soft rubber strip is connected to the side of the scraper 221 close to the photovoltaic panel 1. The top end of the brush 233 is connected to the hose 232 by interference fit.

[0024] Driven by the transmission device 3, the scraper 221 first cleans the ice and snow on the surface of the photovoltaic panel 1, mainly snow. Ice on the photovoltaic panel generally occurs after rain or sleet. The part where the scraper 221 contacts the photovoltaic panel 1 is a soft rubber strip, which reduces the probability of scratching the photovoltaic panel 1. After the scraper 221 scrapes, the nozzle 222 sprays gas heated by the electric heating wire 223 to melt the ice. The photovoltaic panel 1 cannot be heated quickly, otherwise cracks are likely to occur. Especially in winter, when cleaning ice and snow on the photovoltaic panel 1, it is best to control the temperature within 45 degrees. If the temperature is too high, the difference between cold and hot will be too large, and the photovoltaic panel 1 will burst. The gas temperature will have a certain loss during the spraying process, and the photovoltaic panel 1 is slowly heated. Heat. In addition, the thickness of the heating wire 223 will affect the heating efficiency. By selecting a suitable heating wire according to the actual situation, the temperature can be controlled without frequent replacement. The transmission device 3 that can be intermittently paused further improves the melting efficiency of ice and snow. Then the photovoltaic panel 1 is cleaned by the brush 233 and the cotton cloth 236. In order to prevent the brush 233 and the cotton cloth 236 from freezing and scratching the photovoltaic panel 1, one or more scrapers 221 can be added in front of the brush 233. Similarly, a soft rubber strip is arranged at the contact end of the scraper 221 and the photovoltaic panel 1 to scrape off the melted water in front of the brush 233 as much as possible to reduce the probability of the brush 223 and the cotton cloth 236 freezing. The hot air ejected from the nozzle 223 will also reduce the probability of the brush 223 and the cotton cloth 236 freezing. The fixing sleeve fixed on the lower surface of the mounting plate 21 is used to fix the hose 232. The hose 232 may bend during the movement of the cleaning device 2. The hose 232 is made of a colloid material. A spring 234 is installed in the hose 232 to support the hose 232 to a certain extent. If the support strength is not enough, a fixing rod can be added inside the spring 234. The fixing rod is fixedly connected to the fixing sleeve 231, and the length of the fixing rod is less than the length of the spring 234 in the natural state. The brush 233 is connected to the hose 232 by an interference fit, which effectively prevents the joint of the brush from sliding in the hose 232, or the joint of the brush 233 is a threaded sleeve, and the brush 233 is threadedly connected to the hose 232. When the brush 233 and the hose 232 droop naturally, the brush 233 contacts the gap on the photovoltaic panel 1, and the surface of the photovoltaic panel 1 will rise relative to the gap, the brush 233 is squeezed upward, the hose 232 is bent or deformed to a certain extent, and the spring 234 is squeezed to contract. When the spring 234 contracts, it can provide a certain support to the hose 232 in the horizontal direction, so that the hose 232 does not deform too much, and the bending of the hose 232 can be restored when the cleaning work is finished, reducing the probability of plastic deformation of the hose 232 and improving the use efficiency. The cotton cloth 236 is a cotton cloth with a sponge layer wrapped inside. Since the cleaning device 2 reciprocates on the photovoltaic panel 1, the scraper 221 and the brush 233 can be symmetrically arranged in two groups.

[0025] The air inlet of the nozzle 222 sucks in the air passing through the heating wire 223 and blows it out from the nozzle 222 through the rotating wheel. For the temperature control of the nozzle 222, a temperature sensor and a controller are used for feedback control: the feedback control of the temperature of the heating wire 223 can be achieved by using a temperature sensor and a controller. The sensor can monitor the temperature of the heating wire 223 in real time and feed back the temperature signal to the controller. The controller controls the current input of the heating wire 223 according to the preset temperature value and the temperature value fed back by the sensor in real time, so as to ensure that the heat output by the heating wire can be stably maintained within the required range. When there is no ice and snow, the nozzle 222 and the heating wire 223 do not need to be operated.

[0026] As another example, Figure 1 and Figure 3 As shown, the transmission device 3 of the present application includes a toothed ring 31, a gear 32 and a limiting sleeve 33. The limiting sleeve 33 is fixed to one end of the mounting frame of the photovoltaic panel 1, the toothed ring 31 is slidably arranged in the limiting sleeve 33, the upper part of the toothed ring 31 is fixedly connected to the cleaning device 2, the gear 32 is arranged at one end of the toothed ring 31 close to the limiting sleeve 33, and the gear 32 is meshed with the teeth of the toothed ring 31. The cleaning device slides on the photovoltaic panel. The transmission device 3 also includes a driving wheel 34, a limiting wheel 35, a special-shaped driven wheel 36, a clamping strip 37, a clamping slot 38 and a reversible motor 39, and a base 4 for supporting the transmission device. The center of the driving wheel 34 is fixedly connected to the output end of the reversible motor 39, the limiting wheel 35 is fixedly connected to the driving wheel 34, the limiting wheel 35 limits the position of the special-shaped driven wheel 36, the clamping strip 37 is fixedly connected to the quarter point of the driving wheel 34, a plurality of clamping slots 38 are evenly spaced on the special-shaped driven wheel 36, the clamping strip 37 and the clamping slot 38 are meshed, and the center of the special-shaped driven wheel 36 is fixedly connected to the center of the gear 32. The side of the special-shaped driven wheel 36 is arc-shaped, the arc meshes with the side of the limiting wheel 35, and the diameter of the limiting wheel 35 is smaller than the diameter of the driving wheel 34.

[0027] The upper part of the gear ring 31 is fixedly connected to the cleaning device 2. One end of the gear ring 31 is rotatably connected to the mounting frame of the photovoltaic panel 1 through the gear 32, and the other end is connected by rotating a rotating wheel set on the mounting frame of the photovoltaic panel 1. When the gear ring 31 moves, the cleaning device 2 moves accordingly. The limiting sleeve 33 limits the position of the upper part of the gear ring 31 and supports the gear ring 31. One side of the center of the gear 32 is rotatably connected to the mounting frame of the photovoltaic panel 1, and the gear 32 is meshed with the gear ring 31. When the gear 32 rotates, the meshed gear ring 31 moves linearly in the limiting sleeve 33 and drives the cleaning device 2 to move linearly. The lower end surface of the limiting sleeve 33 in contact with the teeth of the gear ring 31 is an arc plate, which reduces the friction between the limiting sleeve 33 and the teeth of the gear ring 31. When the reversible motor 39 is running, the driving wheel 34 is rotated, the limiting wheel 35 rotates accordingly, and the clamping strip 37 also rotates accordingly. When the clamping strip 37 is clamped into the clamping slot 38 of the special-shaped driven wheel 36, the special-shaped driven wheel 36 is rotated with the rotation of the clamping strip 37, and the gear 32 is driven to rotate, and the gear ring 31 is further driven to move. When the clamping strip 37 is rotated out of the clamping slot 38, the driving wheel 34 is disengaged from the special-shaped driven wheel 36, and the special-shaped driven wheel 36 no longer rotates, that is, the gear 32 no longer rotates, and the gear ring 31 stops moving, so that the removal device 2 stops moving. When the clamping strip 37 rotates to the clamping slot 38 again, the above-mentioned action is repeated, so that the removal device 2 can be moved and stopped intermittently. During the stopping process, the nozzle continues to output gas to the ice and snow, which accelerates the melting of ice and snow and improves the efficiency of ice and snow removal. The reversible motor 39 is electrically connected to the control console of the photovoltaic panel 1 through a cable. The number of forward and reverse revolutions of the reversible motor 39 can be set in advance, or a collision detection sensor can be fixedly connected to the end of the photovoltaic panel 1 away from the gear 32, and the limit sleeve 33 is connected to the collision detection sensor near the end of the gear ring 31 or the side of the cleaning device 2. When the end of the gear ring 31 hits the collision detection sensor, the collision detection sensor sends a signal to the control console, and the control console controls the reversible motor 39 to reverse. When the cleaning device 2 hits the collision detection sensor, the reversible motor 39 stops rotating. The special-shaped driven wheel 36 is a circle cut from four symmetrical circles. The number and spacing of the slots 38 can be adjusted according to the pause time required for actual use. The number and spacing of different slots 38 correspond to the diameters of the driving wheel 34 and the limit wheel 35 of different diameters.

[0028] As another example, Figure 4 As shown, the end of the mounting plate 21 of the present application away from the transmission device 3 is rotatably connected to a pulley 5, and the pulley 5 is slidably matched with a slide rail 6 fixedly connected to the mounting frame of the photovoltaic panel 1. The pulley 5 slides on the slide rail 6, which can play a certain supporting role on the mounting plate 21, reduce the friction caused by gravity between the mounting plate 21 and the cleaning device 2 to a certain extent, reduce the force pressure at the connection between the mounting plate 21 and the cleaning device 2 and the gear ring 31, and extend the service life.

[0029] As another embodiment, a plurality of infrared bulbs are arranged and installed on the upper surface of the cleaning device 2. The infrared bulbs can emit light and generate heat. At the same time, the heating temperature of the infrared bulbs will not heat the photovoltaic panel 1 too strongly, causing the photovoltaic panel 1 to be suddenly subjected to uneven heat and cold and produce cracks. Infrared rays are one of the spectrums absorbed by the photovoltaic panel 1. When irradiated with infrared rays, the surface of the photovoltaic panel 1 heats up, making the movement of electrons inside the photovoltaic panel 1 more active. On the one hand, it is beneficial to remove ice and snow, and on the other hand, it improves the operating efficiency of the photovoltaic panel 1.

[0030] The working principle of the device for cleaning photovoltaic panels in the present application is as follows: the surface ice and snow and dust in the gaps of the photovoltaic panel 1 are cleaned by setting a cleaning device 2 and an intermittent transmission device 3. When the ice and snow on the photovoltaic panel 1 need to be cleaned, the reversible motor 39 is turned on to drive the driving wheel 34 to rotate, and the clamping strip 37 on the driving wheel 34 rotates accordingly. When the clamping strip 37 fits with the clamping slot 38, the clamping strip 37 is disengaged from the clamping slot 38 after the special-shaped driven wheel 36 is turned, and the gear 32 fixedly connected to the special-shaped driven wheel 36 rotates intermittently, driving the gear ring 31 to move intermittently, thereby driving the cleaning device 2 to move intermittently. For cleaning of ice and snow, a nozzle 222 with an electric heating wire 223 is used to heat the ice and snow. When the nozzle 222 is intermittently stopped, the melting time of the ice and snow is increased, thereby improving the melting efficiency of the ice and snow. In actual use, the transmission device 3 drives the cleaning device 2 to move, and the scraper 221 first cleans the ice and snow on the surface of the photovoltaic panel 1, and the nozzle 222 behind the scraper 221 melts the ice and snow, and then the brush 233 and the cotton cloth 236 are used for further cleaning, so as to realize the cleaning of the ice and snow on the surface of the photovoltaic panel 1. For cleaning of the uneven surface and the gaps at the connection of the photovoltaic panel 1, a retractable brush 233 is used. When the cleaning device 2 moves, the brush 233 moves accordingly. Since the hose 232 is connected to the brush 233, the hose 232 can be bent to a certain extent according to the uneven surface of the photovoltaic panel 1. In order to prevent the hose 232 from being excessively bent and unable to be effectively cleaned, a spring 234 is added to the hose 232 to realize the cleaning of the gaps or concave surfaces of the photovoltaic panel 1.

[0031] The above are only preferred embodiments of the present invention, and do not limit the present invention in any form. Any technician familiar with the field can make many possible changes and modifications to the technical solution of the present invention by using the above technical content without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any changes, modifications, equivalent changes and modifications made to the above embodiments based on the technology of the present invention without departing from the content of the technical solution of the present invention belong to the protection scope of the present technical solution.

Claims

1. A device for cleaning photovoltaic panels, characterized in that , comprising a photovoltaic panel (1), a cleaning device (2) for removing ice and snow and clearing gaps on the photovoltaic panel (1), and a transmission device (3) for controlling the cleaning device (2) to move intermittently on the photovoltaic panel (1), wherein the transmission device (3) is arranged on the mounting frame of the photovoltaic panel (1), the cleaning device (2) is fixed on the transmission device (3), and the cleaning device (2) is located on the upper surface of the photovoltaic panel (1).

2. A device for cleaning photovoltaic panels according to claim 1, characterized in that: The cleaning device (2) comprises a mounting plate (21), a scraper (221), a nozzle (222) and a heating wire (223); the scraper (221) and the nozzle (222) are mounted on the mounting plate (21); and the heating wire (223) is located at the air inlet of the nozzle (222).

3. A device for cleaning photovoltaic panels according to claim 2, characterized in that: The cleaning device (2) further comprises a fixing sleeve (231), a hose (232), a brush (233), a spring (234), a fixing rod (235) and a cotton cloth (236); the fixing sleeve (231) is fixedly connected to the mounting plate (21); one end of the hose (232) is fixedly connected to the fixing sleeve (231); the other end of the hose (232) is detachably connected to the brush (233); and the spring (234) is arranged in the hose (232).

4. The device for cleaning photovoltaic panels according to claim 1, characterized in that: The transmission device (3) comprises a toothed ring (31), a gear (32) and a limiting sleeve (33); the limiting sleeve (33) is fixed to one end of the mounting frame of the photovoltaic panel (1); the toothed ring (31) is slidably inserted into the limiting sleeve (33); the upper portion of the toothed ring (31) is fixedly connected to the cleaning device (2); the gear (32) is arranged at one end of the toothed ring (31) close to the limiting sleeve (33); and the gear (32) meshes with the teeth of the toothed ring (31).

5. The device for cleaning photovoltaic panels according to claim 4, characterized in that: The transmission device (3) further comprises a driving wheel (34), a limiting wheel (35), a special-shaped driven wheel (36), a clamping strip (37), a clamping slot (38) and a reversible motor (39), and a base (4) for supporting the transmission device, wherein the center of the driving wheel (34) is fixedly connected to the output end of the reversible motor (39), the limiting wheel (35) is fixedly connected to the driving wheel (34), the limiting wheel (35) limits the position of the special-shaped driven wheel (36), the clamping strip (37) is fixedly connected to the four points of the driving wheel (34), a plurality of the clamping slots (38) are evenly spaced on the special-shaped driven wheel (36), the clamping strip (37) is meshed with the clamping slots (38), and the center of the special-shaped driven wheel (36) is fixedly connected to the center of the gear (32).

6. The device for cleaning photovoltaic panels according to claim 5, characterized in that: The edge of the special-shaped driven wheel (36) is arc-shaped, and the arc is meshed with the edge of the limiting wheel (35), and the diameter of the limiting wheel (35) is smaller than the diameter of the driving wheel (34).

7. The device for cleaning photovoltaic panels according to claim 2, characterized in that: A soft rubber strip is connected to one side of the scraper (221) close to the photovoltaic panel (1).

8. The device for cleaning photovoltaic panels according to claim 2, characterized in that: One end of the mounting plate (21) away from the transmission device (3) is rotatably connected to a pulley (5), and the pulley (5) is slidably matched with a slide rail (6) fixedly connected to the mounting frame of the photovoltaic panel (1).

9. The device for cleaning photovoltaic panels according to claim 3, characterized in that: The top end of the brush (233) is connected to the hose (232) by interference fit.

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