WO2016006246A1

WO2016006246A1 - Solar panel cleaning system

Info

Publication number: WO2016006246A1
Application number: PCT/JP2015/003449
Authority: WO
Inventors: 忠夫古館
Original assignee: ジョイボンド株式会社
Priority date: 2014-07-08
Filing date: 2015-07-08
Publication date: 2016-01-14
Also published as: JP5837963B1; JP2016016364A

Abstract

A solar panel cleaning system (1) having a configuration comprising: rails (12) provided along solar panels (P); a travel device (20) that is driven by an electric motor (23) and moves upon the rails (12); support shafts (31) provided in the travel device (20) at an angle of less than 90° but not including 0°, relative to the travel direction of the travel device (20); cleaning tools (30) comprising a sponge formed into a cylindrical shape, not rotating independently, but rotatably supported by the support shafts (31) so as to rotate upon contact with the solar panels (P) during movement of the travel device (20); and a control device (24) that operates the electric motor (23) and causes the travel device (20) to move, only when rain is falling.

Description

Solar panel cleaning system

The present invention relates to a solar panel cleaning system for cleaning the surface of a solar panel.

Since a solar panel (solar cell panel) formed by arranging a plurality of solar cells in a panel shape is installed outdoors, contaminants such as sand and dust easily adhere to the panel surface. If a contaminant adheres to the surface of the solar panel, the contaminant blocks or diffusely reflects sunlight, which significantly reduces the power generation efficiency of the solar panel. Therefore, a system for cleaning the surface of the solar panel is required.

For example, Patent Document 1 discloses that a carriage which is moved along a solar panel is provided with a brush which is rotationally driven by a motor, and the brush is used to clean the surface of the solar panel while supplying water to the surface of the solar panel. A solar panel cleaning system configured to be described is described.

JP, 2004-186632, A

However, since the above-mentioned conventional solar panel cleaning system performs cleaning while supplying water to the surface of the solar panel, equipment that constitutes a water source such as a water sprinkling pipe, a water supply pipe, and an on-off valve is installed in the system. Needs, and there is a problem that the structure becomes complicated.

In particular, in the case of a large mega solar system constructed by installing a large number of solar panels on a large site, a large amount of water is required for the cleaning, but the amount required for the surface of all solar panels It was difficult to set up a water source so that it could supply water.

The object of the present invention is to solve such a point, and the object is to provide a solar panel having a simple structure without providing a water source for supplying water to the surface of the solar panel. An object of the present invention is to provide a solar panel cleaning system capable of cleaning the surface.

A solar panel cleaning system according to the present invention is a solar panel cleaning system for cleaning a surface of a solar panel, comprising: a rail provided along the solar panel; and a moving body driven by a driving source to move on the rail The support is formed into a cylindrical body by a support shaft provided at an angle of less than 90 degrees not including 0 degrees with respect to the movement direction of the movement body, and a sponge, and does not rotate by itself, the movement The cleaning tool is rotatably supported by the support shaft so as to rotate in contact with the solar panel when moving the body, and operates the driving source to move the movable body only when it is raining And control means for

In the solar panel cleaning system according to the present invention, in the above configuration, the control unit is provided with a raindrop sensor capable of detecting the amount of rainfall, and when the amount of rainfall detected by the raindrop sensor exceeds a predetermined amount It is preferable to be configured to determine that it is falling.

In the solar panel cleaning system according to the present invention, in the above configuration, the movable body includes a pair of support slits extending in a direction toward or away from the solar panel, and the support slits correspond to both ends of the support shaft. It is preferable that the cleaning tool be tiltable in accordance with the tilt of the solar panel by being movably supported along the support slit.

In the solar panel cleaning system according to the present invention, in the above configuration, a plurality of standby homes disposed offset from the solar panel are provided in the middle of the rail, and the control means is provided with rain during operation of the movable body. It is preferable that the mobile unit be stopped at the nearest stand-by home when it has stopped.

In the solar panel cleaning system according to the present invention, in the above-described configuration, it is preferable that a brush that protrudes radially outward from an outer peripheral surface of the cleaning tool is provided at both axial ends of the cleaning tool.

ADVANTAGE OF THE INVENTION According to this invention, the solar panel washing | cleaning system which can wash | clean the surface of a solar panel by simple structure can be provided, without providing the installation for supplying water to the surface of a solar panel.

FIG. 1 is a plan view of a solar panel cleaning system according to an embodiment of the present invention. FIG. 2 is a cross-sectional view taken along the line AA in FIG. FIG. 3 is a cross-sectional view taken along the line B-B in FIG. (A)-(e) is a figure which shows the modification of the washing | cleaning tool shown in FIG. 1, respectively. In a mega solar system provided with a plurality of rows of solar panels, it is an explanatory view showing a configuration in which a mobile is driven by a switchback method. In the mega solar system provided with a plurality of rows of solar panels, it is an explanatory view showing a configuration in which the moving body is driven in a loop system. It is a perspective view which shows the structure of the movement apparatus used by the loop system shown in FIG. FIG. 8 is a cross-sectional view taken along line CC in FIG. 7; (A), (b) is explanatory drawing which shows a mode that the washing | cleaning tool shown in FIG. 8 follows the surface of a solar panel, and inclines, respectively.

Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

A solar panel cleaning system 1 according to an embodiment of the present invention shown in FIG. 1 cleans the surface of a solar panel P, that is, cleans away contaminants such as sand and dust adhering to the surface of the solar panel P to be a solar panel. It is for preventing the decline of P's power generation capacity. This solar panel cleaning system 1 operates only when it is raining, and cleaning can be performed without providing facilities for securing water for cleaning by performing cleaning using rain water as a water source Do.

This solar panel cleaning system 1 can be used, for example, for cleaning a mega solar system constructed by arranging a large number of solar panels P in a large number of rows and arranging them. In this case, on the ground of the installation space, a support 10 made of, for example, aluminum alloy is installed, and a large number of solar panels P are mounted on the mounting frame 11 provided on the support 10. It is attached side by side in a straight line with an inclined posture toward the. In addition, in the installation space, a plurality of supports 10 are arranged in multiple rows, and a large number of solar panels P are attached to each support 10 to form a mega solar system consisting of multiple rows of solar panels. Be built.

The solar panel cleaning system 1 includes rails 12 extending along the array direction of the solar panels P. In the case shown, the rail 12 is integrally formed with the support 10. The rails 12 are disposed on the upper side and the lower side of the solar panel P in the inclination direction, and the solar panel P is disposed between the pair of upper and lower rails 12.

A moving device 20 as a moving body is disposed on the rail 12 so as to be movable along the rail 12. The moving device 20 has a frame body 21 on which four wheels 22 are rotatably mounted. The moving device 20 can travel along the rails 12 with the wheels 22 to move the upper side of the solar panel P along the solar panel P. One of the wheels 22 is a drive wheel in which an electric motor (drive source) 23 is installed, and the moving device 20 is driven by the electric motor 23 by the wheel 22 as a drive wheel. It can move.

Although the power supply of the electric motor 23 is not shown in detail, it may be a combination of a trolley power supply and a battery. That is, the electric power generated by the solar panel P is stored in the battery, and the electric power of the battery is supplied to the moving device 20, that is, the electric motor 23 through the trolley (overhead wire) installed along the rail 12. Can. With such a configuration, the configuration of power supply to the mobile device 20 can be simplified, and the installation cost of the solar panel cleaning system 1 can be reduced.

A control device (control means) 24 is connected to the electric motor 23. The controller 24 controls the operation of the electric motor 23. The control device 24 can be configured to include a microcomputer including a drive circuit of the electric motor 23, a CPU, a memory, and the like.

The controller 24 operates the electric motor 23 only when it is raining, and controls the moving device 20 to move along the rails. Further, when the rain stops, the control device 24 stops the operation of the electric motor 23 and stops the moving device 20 at a predetermined position. Thus, the control device 24 is configured to operate the electric motor 23 to clean the solar panel P only when it is raining.

In order to determine whether it is raining or stopping, the control device 24 can be configured to connect a raindrop sensor 25 that detects the amount of rainfall. As the raindrop sensor 25, various types such as an ultrasonic type or an optical type can be used as long as it can detect the amount of rainfall. The control device 24 determines that it is raining when the amount of rainfall detected by the raindrop sensor 25 is equal to or greater than a predetermined amount, and the amount of rainfall detected by the raindrop sensor 25 is less than the predetermined amount. It is configured to judge that the rain has stopped.

By having the raindrop sensor 25, the solar panel cleaning system 1 can be operated when the rainfall amount is suitable for cleaning, so the surface of the solar panel P is more effective under sufficient rainfall. Can be cleaned.

As described above, in the solar panel cleaning system 1, the moving device 20 operates only when it is raining, and the surface of the solar panel P is cleaned. At this time, rainwater poured onto the surface of the solar panel P is used as a water source for cleaning. Thus, the moving device 20 is operated only when it is raining, and the surface of the solar panel P is cleaned using rain water as a water source. Therefore, the water source for supplying water to the surface of the solar panel P is used. The configuration of the solar panel cleaning system 1 can be simplified without requiring installation.

The moving device 20 is provided with a cleaning tool 30. The cleaning tool 30 is a sponge roll formed into a cylindrical body by a sponge, and is fixed to the support shaft 31 at its axial center. In the case of illustration, the case where four cleaning tools 30 are arranged in one moving device 20 at intervals in the moving direction of the moving device 20 is shown.

Both ends in the longitudinal direction of the support shaft 31 respectively project from the end face in the longitudinal direction of the cleaning tool 30 and are rotatably supported by the frame body 21 of the moving device 20 at the both ends in the longitudinal direction. Thus, the cleaning tool 30 is supported by the support shaft 31 on the moving device 20 so as to be freely rotatable about the axial center of the support shaft 31. Further, the support shaft 31 is parallel to the surface of the solar panel P, and is inclined at an angle of less than 90 degrees not including 0 degrees with respect to the moving direction of the moving device 20 along the rails 12. In the case shown in FIG. 1, the support shaft 31 of the leftmost cleaning tool 30 and the support shaft 31 of the third cleaning tool 30 from the left in FIG. 1 are inclined in the same direction at the same angle, and the second cleaning from the left The spindle 31 of the tool 30 and the spindle 31 of the rightmost cleaning tool 30 face the opposite side of the leftmost cleaning tool 30 and the third support tool 31 from the left at the same angle. In the same direction.

The distance between the support shaft 31 and the solar panel P is set to be smaller than the radius of the cleaning tool 30. Thereby, the outer peripheral surface of the cleaning tool 30 is in contact with the surface of the solar panel P in a state of being pressed with a predetermined pressure. Therefore, as shown in FIG. 3, the contact part with the solar panel P of the outer peripheral surface of the cleaning tool 30 deform | transforms so that it may become a flat surface along the surface of the solar panel P, and is dented in circular arc shape.

The cleaning tool 30 does not rotate by itself, and rotates in contact with the solar panel P when the moving device 20 moves. That is, the moving device 20 is not provided with a drive source such as an electric motor, an air motor, or a hydraulic motor for driving the cleaning tool 30 to rotate. The cleaning tool 30 moves on the surface of the solar panel P along with the movement of the moving device 20 due to the frictional contact that the outer peripheral surface of the cleaning device 30 moves along the solar panel P with the surface of the solar panel P. Rotate.

Here, since the cleaning tool 30 is formed of a sponge having a large number of small and irregularly shaped air gaps, the arc concaved portion in contact with the surface of the solar panel P is less deformed as it is rotated. In the process of moving, it does not repel uniformly, it will repel irregularly. Therefore, the outer peripheral surface of the cleaning tool 30 produces minute vibrations of irregular amplitude with respect to the surface of the solar panel P. By this vibration, the cleaning tool 30 can effectively remove the dirt on the surface of the solar panel P.

In addition, since the support shaft 31 serving as the rotation axis of the cleaning tool 30 is inclined at an angle of less than 90 degrees not including 0 degrees with respect to the moving direction of the moving device 20 along the rail 12, the cleaning tool 30 In this case, the contact portion with the surface of the solar panel P rotates while causing a sliding displacement with respect to the surface of the solar panel P. That is, the cleaning tool 30 rotates while generating rubbing resistance with respect to the surface of the solar panel P, and can effectively clean the surface of the solar panel P while rubbing it on the outer peripheral surface thereof.

In addition, the above-mentioned inclination angle of each spindle 31 is variously changed in the range of less than 90 degrees which does not include 0 degree so that abrasion resistance to the surface of solar panel P of cleaning implement 30 may become a desired degree. Can.

As described above, the solar panel cleaning system 1 of the present invention is not equipped with a water source facility for supplying water for cleaning, and operates only when it is raining, and uses rainwater as a water source for cleaning. As described above, since the cleaning tool 30 is configured to exert a high cleaning effect by rubbing the surface of the solar panel P with minute vibrations as described above, even in the cleaning using rain water, The dirt on the surface of the solar panel P can be effectively cleaned.

In addition, according to the manufacturer's specifications, etc., it is generally considered that the solar panel P should be washed about two to three times a year, so the configuration is such that the washing is performed only when it is raining. Also, the surface of the solar panel P can be maintained in a cleaned state to obtain a desired power generation efficiency throughout the year. In addition, when it rains, the amount of solar power that falls on the solar panel P decreases, and the amount of power generation of the solar panel P decreases. Therefore, cleaning when it is raining interferes with that amount of power generation. Cleaning can be performed without Furthermore, the surface temperature of the solar panel P becomes high under the sun and if the surface is exposed to water for cleaning, the surface of the solar panel P may be cracked and damaged, but the surface temperature of the solar panel P when it is raining Of the solar panel P is prevented from being damaged by the water being applied.

Although rainwater contains some atmospheric pollutants due to the surrounding environment, it is basically distilled water and does not contain minerals such as calcium and silicate substances, so the rainwater evaporates on the surface of solar panel P. However, crystals of mineral do not adhere to the surface. On the other hand, when washing is performed using tap water or ground water, when it evaporates on the surface of the solar panel P, crystals of mineral components are accumulated to form a blister, which is difficult to remove from the surface And the efficiency of the solar panel P will be reduced. Therefore, as in the solar panel cleaning system 1 of the present invention, by performing cleaning using rain water as a water source, adhesion of water droplets and the like to the surface of the solar panel P is prevented, and desired generation of power It can be maintained in a state where efficiency can be obtained.

Also, in areas where the air is polluted, acid rain is caused by sulfur oxides (SOx), nitrogen oxides (NOx), hydrogen chloride (HCl), etc. being contained in the air, and this acid rain is a solar panel. There is a possibility that the surface of P and metal parts may be corroded, but if further cleaning with ground water is performed in this state, many contaminants will be added again, and the corrosion will be further aggravated. On the other hand, in the present invention, since rain water is used as a water source for cleaning, the influence of acid rain on corrosion and the like can be minimized.

Furthermore, in the solar panel cleaning system 1 of the present invention, the cleaning tool 30 is configured to rotate in contact with the solar panel P when moving the moving device 20 to clean the surface of the solar panel P. A drive source such as an electric motor for rotationally driving the motor 30, air, oil pressure, etc. and equipment for driving the same are not necessary. Therefore, the solar panel cleaning system 1 can be constructed with a simple configuration of only the power supply equipment for the electric motor 23 for moving the moving device 20 and the installation of the rail 12 for guiding the moving device 20. Therefore, the configuration of the solar panel cleaning system 1 can be simplified and the installation cost can be reduced.

The cleaning tool 30 can have a configuration in which the brushes 32 are provided at both axial ends. It is preferable that the brush 32 be formed to have a long haired leg and to protrude radially outward from the outer peripheral surface of the cleaning tool 30. The brush 32 is arranged to be in contact with the upper and lower edge portions of the mounting frame 11 to which the solar panel P is attached. By providing such a brush 32, when the moving device 20 moves, foreign particles such as sand and dust accumulated on the mounting frame 11 to which the solar panel P is attached can be swept away by the brush 32. Thereby, the fall of the power generation efficiency of solar panel P by adhesion of the foreign substance concerned can be prevented.

As shown in FIGS. 4 (a) to 4 (e), the cleaning tool can be configured to have a cut 33 in the outer peripheral surface thereof. In FIG. 4, for convenience, only one break 33 is denoted by a reference numeral.

For example, as shown in FIG. 4A, a plurality of cuts 33 extending straight along the support shaft 31 can be provided at equal intervals in the circumferential direction on the outer peripheral surface of the cleaning tool 30. These cuts 33 extend from one end of the cleaning tool 30 in the axial direction to the other end, and divide the outer peripheral surface of the cleaning tool 30 into a plurality of parts in the circumferential direction. The number or pitch of the cuts 33 can be changed as appropriate.

The cut 33 provided on the outer peripheral surface of the cleaning tool 30 is not limited to one extending straight along the support shaft 31 but may be, for example, a ring-shaped cut 33 provided to cross the axial direction of the support shaft 31 You can also. FIG. 4B shows a case where a plurality of ring-shaped cuts 33 are provided in parallel with each other at intervals in the axial direction of the cleaning tool 30. Also in this case, the number or pitch of the cuts 33 can be changed as appropriate.

In addition, the cut 33 provided on the outer peripheral surface of the cleaning tool 30 can also extend helically around the support shaft 31 as shown in FIG. 4C, for example. The pitch of the spiral can be varied.

Furthermore, the ring-shaped cut 33 and the spiral cut 33 may be provided in combination with the cut 33 extending straight along the support shaft 31, as shown in FIGS. 4 (d) and 4 (e).

By providing such a cut 33 on the outer peripheral surface of the cleaning tool 30, the range of the relief movement at the contact portion with the outer peripheral surface of the solar panel P of the cleaning tool 30 is increased and the edge effect at the portion of the cut 33 is obtained. The cleaning effect of the cleaning tool 30 can be further enhanced. Therefore, washing using rainwater as a water source can be performed more effectively.

In the mega solar system in which the solar panels P are arranged in a plurality of rows, a configuration is required to move the moving device 20 to the rails 12 corresponding to the solar panels P in each row. FIG. 5 shows a configuration in which the moving device 20 is moved to the rails 12 of each row by the switchback method. The switchback method is preferably applied to relatively small area mega solar systems.

In the switchback method, the end of the rail 12 of each row and the beginning of the rail 12 of the next row are connected via the switch unit 40. The moving device 20 moves to the end of the rail 12 of each row, and reverses the operating direction of the electric motor 23 at the end to reverse the moving direction. The switch unit 40 switches the moving path of the moving device 20 to the side of the next rail 12. This allows the moving device 20 to move towards the next row of rails 12. Similar to the mountain railway's switchback method, by repeating the switchback at the end of each rail 12, the moving device 20 may move the rails 12 of each row in order while alternately reversing its moving direction to the left and right. it can.

In this case, the switch unit 40 connecting the ends of the rails 12 can be configured as the standby home 40. The control device 24 causes the mobile device 20 to stop at the nearest standby home 40 when it stops raining while the mobile device 20 is in operation. Since the standby home 40 is provided offset from the solar panel P, when the mobile device 20 is stopped by the standby home 40, when the solar panel P generates electric power in fine weather or the like, the solar panel is moved by the mobile device 20. P's power generation will not be hindered. Then, when it is raining again, the electric motor 23 is operated by the control device 24, and the operation of the moving device 20 is restarted with the standby home 40 as a starting point.

As described above, when the rain stops during cleaning, by stopping the moving device 20 at the standby home 40 shifted from the top of the solar panel P, the sunlight hitting the solar panel P is blocked by the moving device 20 and the solar It is possible to prevent the power generation efficiency of the panel P from being reduced.

The connection of the rails 12 in each row is not limited to the switchback method, and may be a loop method shown in FIG. The loop scheme is preferably applied to relatively large area mega solar systems.

In the loop system, the end of the rail 12 of each row and the beginning of the rail 12 of the next row are connected in series by the curved rail portion 41. The moving device 20 can sequentially move the rails 12 of each row without reversing the operating direction of the electric motor 23.

FIG. 6 shows the case where the rails 12 of each row are connected to form two courses (loops) so that two moving devices 20 can be operated simultaneously. Thus, the cleaning time can be halved by configuring the two moving devices 20 to operate simultaneously. In order to operate two or more moving devices 20 simultaneously, the rails 12 of each row may be connected by being divided into two or more courses. In any case, the movement pattern of each moving device 20 is controlled so that the moving devices 20 do not contact each other in the curved rail portion 41.

Although not shown in the drawings, each course is configured as a course that circulates in a loop by connecting the end of the lowermost rail 12 of the loop in series to the beginning of the uppermost rail 12 of the loop. Ru.

In the loop system shown in FIG. 6, since there is no turning point of the moving device 20, the tilt angle of the solar panel P with respect to the moving device 20 changes in the opposite direction each time the row is moved. Therefore, in order to bring the entire outer peripheral surface of the cleaning tool 30 into contact with the surface of the solar panel P in each row, the moving device 20 used in the loop system requires an angle changing mechanism of the cleaning tool 30.

FIG. 7 shows an example of the mobile device 20 used in the loop system. In addition, in FIG. 7, the same code | symbol is attached | subjected to the member corresponding to the member mentioned above, and description for the second time is abbreviate | omitted.

The moving device 20 shown in FIG. 7 includes two cleaning tools 30. The inclination angles with respect to the moving direction of the moving device 20 of the support shaft 31 supporting these cleaning tools 30 are opposite to each other and the same angle. In order to support the cleaning tools 30 in a tiltable manner, the frame body 21 of the moving device 20 is provided with four support slits 50 corresponding to the respective cleaning tools 30. In the case shown, these support slits 50 are sectioned and formed between two columns 51 arranged so as to be slightly wider than the diameter of the support shaft 31, in the direction of approaching and separating the solar panel P. It extends. The support slit 50 is not limited to the space between the columns 51, and a part of a plate or the like may be cut out in a slit shape.

Both ends in the longitudinal direction of the support shaft 31 for supporting the cleaning tool 30 are respectively disposed in the corresponding support slits 50. The support shaft 31 is supported by the support slit 50 so as to be freely movable and rotatable in the vertical direction, that is, in a direction approaching or away from the solar panel P. Therefore, the cleaning tool 30 is freely rotatable with respect to the moving device 20 and can be tilted in accordance with the tilt of the solar panel P. In the solar panel cleaning system 1 of the present invention, the cleaning tool 30 has a simple structure that is only supported by the support shaft 31 so as to be freely rotatable, without providing a drive source or the like. The mechanism can be easily configured with a simple mechanism.

With such a configuration, when the moving device 20 moves on the solar panel P from the left to the right, as shown in FIG. It inclines so as to descend, and the entire outer peripheral surface is in contact with the surface of the solar panel P. On the other hand, when the moving device 20 moves to the next row of solar panels P and moves on the solar panels P from the right to the left, as shown in FIG. It inclines so that the lower left side may go down to movement device 20, and it will be in the posture where the whole peripheral face contacts the surface of solar panel P. Thus, even if the angle of the solar panel P with respect to the moving device 20 changes with the movement of the moving device 20, the entire surface of the outer peripheral surface is brought into contact with the surface of the solar panel P by tilting the cleaning tool 30. Thus, the surface of the solar panel P can be reliably cleaned.

In the moving device 20 shown in FIG. 7, since the cleaning tool 30 is supported so as to be movable up and down along the support slit 50, the pressing pressure of the cleaning tool 30 against the surface of the solar panel P is the weight of the cleaning tool 30. It will be added by the weight of the support shaft 31. Adjustment of the pressing pressure of the cleaning tool 30 against the surface of the solar panel P can be performed by changing the thickness of the support shaft 31 or changing its weight. Moreover, adjustment of the pressing pressure to the surface of the solar panel P of the cleaning tool 30 can also be performed using elastic bodies, such as a spring which biases the spindle 31 toward the solar panel P side.

In the moving device 20 shown in FIG. 7, the electric motor 23 as a drive source is disposed on the top plate 52 supported by the upper end of the support 51. Further, a pulley 53 is fixed to the output shaft of the electric motor 23, and the output of the electric motor 23 is transmitted to the wheels (driving wheels) 22 via a belt 54 wound around the pulley 53. Also in this case, a configuration using a trolley power supply and a battery as the power supply of the electric motor 23 can be employed.

It is needless to say that the present invention is not limited to the above embodiment, and various modifications can be made without departing from the scope of the invention.

For example, the solar panel cleaning system 1 of the present invention can be applied not only to cleaning of a mega solar system, but also to cleaning of a solar panel P installed on a roof of a house, for example.

In addition, as long as the rail 12 is configured to move the moving device 20 along the solar panel P, various configurations can be adopted such as, for example, a configuration provided separately from the support base 10. .

Furthermore, the standby home 40 is not limited to the switch unit 40 in the configuration of the switchback method shown in FIG. 5, for example, at a position shifted from above the solar panel P, such as setting the curved rail portion 41 in the loop system as the standby home. If provided, they can be installed at various positions.

Reference Signs List 1 solar panel cleaning system 10 support base 11 mounting frame 12 rail 20 moving device (moving body)
21 frame body 22 wheels 23 electric motor (drive source)
24 Control device (control means)
25 Raindrop sensor 30 Cleaning tool 31 Support shaft 32 Brush 33 Break 40 Switch part (standby home)
41 Curved rail (standby home)
50 support slit 51 post 52 top plate 53 pulley 54 belt P solar panel

Claims

A solar panel cleaning system for cleaning the surface of a solar panel,
A rail provided along the solar panel;
A movable body driven by a drive source to move on the rail;
A pivot installed on the movable body at an angle of less than 90 degrees not including 0 degrees with respect to the moving direction of the movable body;
A cleaning tool which is formed into a cylindrical body by a sponge, is not rotated by itself, and is rotatably supported by the support shaft so as to rotate in contact with the solar panel when the movable body is moved;
A control means for operating the drive source to move the movable body only when it is raining.
A raindrop sensor is provided which can detect the amount of rainfall, and the control means determines that it is raining when the amount of rainfall detected by the raindrop sensor exceeds a predetermined amount. The solar panel cleaning system according to 1.
The movable body includes a pair of support slits extending in a direction toward and away from the solar panel, and both ends of the support shaft are supported by the corresponding support slits so as to be movable along the support slits. The solar panel cleaning system according to claim 1 or 2, wherein the cleaning tool is tiltable in accordance with the inclination of the solar panel.
In the middle of the rail, there are provided a plurality of standby homes which are disposed offset from the solar panel,
The solar panel according to any one of claims 1 to 3, wherein the control means causes the nearest stand-by home to stop the moving body when rain stops during operation of the moving body. Cleaning system.
The solar panel cleaning system according to any one of claims 1 to 4, wherein brushes are provided at both axial ends of the cleaning tool and project radially outward from the outer peripheral surface of the cleaning tool.