KR20190117927A - An automatic Cleaning system of Solarcell module - Google Patents

Abstract

The present invention relates to an automatic washing system for a photovoltaic module. More specifically, the automatic washing system for a photovoltaic module comprising: first and second moving bodies installed on the ground at a predetermined height upward, installed to be spaced apart at a predetermined distance from both left and right sides, and consisting of structures integrally formed with each other; a washing water storage and supply unit provided on any one or both sides of the first and second moving bodies to supply a washing agent required for washing a photovoltaic module according to control of a central control unit mounted on the first or the second moving body; a central control unit for storing various control programs and a battery provided on any one or both sides of the first and second moving bodies to be charged by an external power source or a charging photovoltaic module; one or more moving means provided on the bottom of the first and second moving bodies to move the first and second moving bodies while rotating according to a control command of the central control unit; a washing unit provided on a suspension member for connecting upper ends of the first and second moving bodies to wash the surface of a photovoltaic module by using the washing water supplied from the washing water storage and supply unit in a state where the first and second moving bodies are moved to both left and right sides of the photovoltaic module according to control of the central control unit; and a moving rail having a moving means mounted to wash surfaces of a plurality of photovoltaic modules while the first and second moving bodies move between the photovoltaic modules through the moving means rotated according to the control of the central control unit, and installed on the bottom surface of a photovoltaic power plant to provide continuous moving paths.

Description

Solar module automatic washing system {An automatic Cleaning system of Solarcell module}

The present invention relates to a solar module automatic washing system, and more particularly, in the photovoltaic power station in which a plurality of photovoltaic modules are installed, each of the photovoltaic modules is moved unattended by a program set therein to accumulate dust or foreign matters. The present invention relates to a photovoltaic module automatic cleaning system configured to automatically clean a module surface.

In order to reduce the use of fossil energy, including petroleum, due to the increase in global warming and air pollution, commercialization is in earnest in various fields as interest in the development and use of renewable energy is increasing in various countries around the world.

Among the renewable energy sectors, in particular, the photovoltaic power generation sector is actively developing technologies and commercialization.

Photovoltaic power generation is a clean technology that can produce electricity infinitely from sunlight, and is commercialized most actively in major countries such as Europe as well as in Korea because there is no air pollution.

The main facilities of the photovoltaic power plant include a solar module that receives electricity from sunlight and produces electricity by the photovoltaic effect, an inverter that converts the direct current electricity produced by the solar module into alternating current (AC), and produced electricity. A storage battery for storing the solar cell, a solar panel support structure fixedly installed at a predetermined height from the ground to easily receive the solar light on the solar module, and a control panel for controlling electricity storage, distribution, and supply of electricity produced by the solar module. And, there is basically provided a management server for managing the control panel in order to manage and maintain the photovoltaic power generation facilities at a remote location.

In general, a photovoltaic power plant can realize economic profit only when a certain amount of photovoltaic modules are installed, so that a plurality of photovoltaic modules are installed in series and connected in series in a required unit capacity while occupying a very large space. .

Since a plurality of photovoltaic modules installed in such a photovoltaic power plant produces more electricity as the amount of light incident on the surface of the photovoltaic power plant increases, the photovoltaic module is installed in a structure that can increase the light receiving efficiency of the photovoltaic solar cells according to the altitude angle of the sun.

However, since the photovoltaic module of the photovoltaic power station is kept exposed to the outside of the four seasons, it is affected by the amount of electricity produced according to the external weather conditions. If the temperature rises too high, the resistance flows inside the solar cell to increase the power loss, and another factor is that various dust or foreign substances stick to the surface of the solar module to reduce the light receiving efficiency of the solar power production It lowers the efficiency.

In order to solve these problems, a photovoltaic cooling and cleaning system for cleaning various foreign substances adhering to the surface of the solar module while preventing the overheating of the solar module of the photovoltaic power plant installed in the open field is devised in various forms. have.

In particular, a large number of cleaning systems have been conventionally proposed to clean the surface by using a separate cleaning member while spraying cooling water on the surface of the solar module using the washing water or cooling water at high pressure. have.

Looking at a conventional embodiment of washing the solar module using the washing water, Korean Patent Publication No. 10-2013-88345 (published: 2013.08.08, Name of the invention: washing and cooling system of the photovoltaic device) Has been created.

The conventional washing and cooling system of the solar power generation device is provided with a tank for storing the cooling water on one side of the solar module, the cooling water supply pipe is installed on each of the solar modules in the cooling water storage tank, the solar module The lower side of the cooling module is installed to collect the coolant to reuse the cooling water used to clean the solar module, and the cooling water supply is made of a structure in which a cooling water supply pipe connected to the cooling water storage tank is installed.

Therefore, although it is configured to improve the use efficiency of the cooling water by recovering and reusing the used cooling water, the structure construction and the cooling water supply pipe for installing the cooling water supply pipe at the upper and lower parts of each solar module installed in a plurality of photovoltaic power plants are added. It takes a lot of material costs, it is necessary to install the washing water storage tanks in many places, and each of the washing water storage tanks, such as the need to replenish the washing water had a variety of inconvenient work additionally difficult.

In another conventional embodiment, there is a 'photovoltaic power generation apparatus including a washing device' of Korean Patent Registration No. 10-1328471 (Registration Date: 2013.11.06).

The conventional photovoltaic device including a washing device is also provided on each of the photovoltaic module support frames, which are installed in a plurality of photovoltaic power plants, similarly to the conventional 'washing and cooling system of the photovoltaic device.' In order to install the cleaning device on all solar modules, the installation structure of each solar cell support frame is complicated, and the driving unit, the brush, and the compressed air provided in each cleaning device are provided. Complicated configuration of peripheral devices, and complicated installation of cleaning devices on supporting frames of all solar cells increases the installation cost of photovoltaic power plants and causes many difficulties in maintaining and managing the cleaning devices installed in each solar cell. There was a problem.

As described above, since the solar module and the solar cell cleaning device installed in the conventional solar power plant have a structure or a structure that can be individually washed for each solar module, the number of solar module installation devices must be installed so that the solar In addition to the basic equipment of the optical module, the installation cost for the cleaning device was enormous, and it was difficult to install the cleaning device on each solar module in a large-scale photovoltaic power plant.

In addition, when each washing apparatus is installed in each solar module, it is difficult to maintain and manage a number of washing apparatuses and incur a lot of maintenance costs.

-Patent Publication No. 10-2013-88345 (published: 2013.08.08, Title of the invention: washing and cooling system of photovoltaic device) -Patent Registration No. 10-1328471 (Registration date: 2013.11.06, Name of the invention: Photovoltaic power generation device including washing device) -Patent Registration No. 10-1340039 (Registration date: December 4, 2013, Title of the invention: Photovoltaic power generation system with a solar module cleaning device)

The present invention has been made to overcome the disadvantages of the conventional solar module cleaning device installed in the solar power plant, one cleaning system to each solar module instead of the individual cleaning device provided in each solar module Solar module automatic cleaning system that makes it possible to clean the surface of the photovoltaic module while moving, which does not complicate the composition of the photovoltaic module and the support module. Its purpose is to provide it.

In addition, the present invention is configured to be able to wash a plurality of solar modules using a single washing system, so as to reduce the construction and maintenance cost of the entire photovoltaic power plant, grasp the degree of contamination of the solar module in real time It is another object of the present invention to provide a solar module automatic cleaning system that can be configured to be washed to maintain the maximum photovoltaic efficiency.

In order to achieve the above object, the automatic washing system of the solar module according to the present invention is installed at a predetermined height upward from the ground, and is installed at a predetermined distance from both left and right sides, and is composed of structures integrated with each other. ; Washing water storage and supply unit which is provided on any one or both of the first and second mobile body to supply a cleaning agent for cleaning the solar module under the control of the central control unit mounted on the first or second mobile body; A central control unit which is connected to an external power source and stores a battery and various control programs provided on one or both sides of the first and second moving bodies so as to be charged and operated by the power supplied from the battery; At least one moving means provided at a bottom of the first and second moving bodies to receive the power from the battery and move the first and second moving bodies while rotating according to a control command of the central controller; Under the control of the central controller, the first and second movable bodies move to the left and right sides of the photovoltaic module to wash the surface of the photovoltaic module using the washing water supplied from the washing water storage and supply unit. A washing unit provided in the suspension member interconnecting the upper ends of the second moving bodies; A zone in which the moving means is set so that the first and second moving bodies may move between the plurality of solar modules through the rotation of the moving means rotated under the control of the central control unit and automatically wash the surface of the plurality of solar modules. It comprises a; moving rail which is installed on the bottom surface of the photovoltaic power plant to provide a path capable of continuous movement within.

In particular, when the first and second moving bodies are moved along the moving rail, the cleaning operation is stopped and the first and second moving bodies are stopped when the solar modules in the set area are completed or the battery is discharged below the reference value. The mobile charging station is provided at one end of the mobile rail to automatically return to the home position to charge the discharged battery.

In addition, the cleaning agent supply unit, the washing water supply tank for supplying a predetermined amount of the washing water, and the washing water supply pump for forcibly supplying the washing water stored in the washing water reservoir to the washing unit provided on the bottom surface of the suspension member under the control of the central control unit, and the washing water Diluted to a certain ratio in the wash water stored in the storage bin is provided separately on one side of the wash water reservoir to improve the washing efficiency of the solar module detergent storage tank is configured to automatically supply detergent into the wash water reservoir, and the solar module washed with the wash water It is sprayed on the surface of the coating liquid is stored in the interior to prevent the adhesion of foreign matters and improve the photovoltaic efficiency, the coating liquid storage container is provided separately on one side of the wash water reservoir to spray the coating liquid by a separate coating liquid spray pump; Consists of the configuration.

In addition, the first moving body and the second moving body is provided with a lifting support in a structure capable of lifting each of the front and rear ends, the front and rear ends of each moving body so that the suspension member coupled to the upper surface of the lifting support has the same inclination as the solar module. The suspension support is configured to be different from each other, the suspension support so that the lifting support is raised and lowered according to whether the real-time measured interval data between the suspension member and the photovoltaic module corresponds to the set reference interval. The member and the solar module consists of a configuration provided with a distance sensing means on one side or both sides.

In addition, any one or more of the plurality of photovoltaic modules is provided with a pollution sensor on the surface of the solar module to measure the degree of contamination of the surface of the solar module, by receiving the signal of the pollution detection sensor in real time The solar communication module is configured to have a wireless communication module which communicates with the solar module and the central control unit so as to receive the signal generated by the pollution sensor wirelessly to determine whether the solar module is cleaned according to the control.

The washing unit includes one or more lines of washing water distribution pipes installed in the left and right width directions of the suspension member, a plurality of washing water spray nozzles provided at the washing water distribution pipes at predetermined intervals, and an embodiment in which the washing water is sprayed from the washing water spray nozzles. A water removal wiper installed on one side or both sides of the washing water distribution pipe to remove water on the surface of the optical module, and a water removal member installed on one side of the water removal wiper to remove water remaining in the solar module; And a coating liquid spraying means installed at one side of the washing water distribution pipe and spraying the coating liquid stored in the coating liquid storage tank to the surface of the solar module from which water is removed under the control of the central controller.

The central control unit may include a moving unit provided under each moving unit, a failure monitoring unit for determining in real time whether each unit is operated by the washing unit provided in the suspension member, and determining whether there is a failure, and according to a signal of the failure monitoring unit. When it is determined that a failure occurs in a specific part, a failure alarm unit for wirelessly notifying the details of the failure to the registered administrator; consists of a configuration provided.

In the automatic cleaning system of the solar module according to the present invention having the above configuration and structure, when the pollution degree on the surface of the solar module is grasped by a pollution detection sensor in real time or more, the first and second moving bodies are identified. It automatically moves along the moving rail and automatically cleans the surface of the photovoltaic module in the set area and then returns to the home to keep the photovoltaic efficiency to the maximum to minimize the economic loss caused by the reduction of power generation. To help.

In particular, even if the solar modules are cleaned through a separate facility management company after the installation of the solar power plant, the cleaning can be performed at a predetermined time period. Although there was a problem that the power generation efficiency is reduced, the present invention is automatically cleaned according to the pollution state of the surface of the solar module in real time, so that it is possible to maintain the power production efficiency steadily to the maximum to prevent the economic profitability of power generation companies from deteriorating. Do it.

1 is a schematic view of the main configuration of a solar module automatic washing system according to the present invention,
2 is a main block diagram of a solar module automatic washing system according to the present invention,
Figure 3 is an external perspective view according to an embodiment of the mobile body applied to the automatic solar module cleaning system according to the present invention,
Figure 4 is a rear view of the suspension member applied to the automatic solar module cleaning system according to the present invention,
Figure 5 is a block diagram of the main configuration of the central control unit applied to the automatic solar module cleaning system according to the present invention,
6 and 7 is a state diagram used in the solar module automatic washing system according to the present invention.

The solar module automatic washing system according to the present invention installs a moving rail between each solar module on the road surface of a photovoltaic power station in which a plurality of solar modules are installed at predetermined intervals, and moves along each of the moving rails. It consists of a pair of moving bodies to wash the module, the movable body can automatically clean the plurality of solar modules in sequence while moving along the moving rail to identify the contamination state of the solar module automatically according to the set program Provides an unattended cleaning system configured to

In addition, the present invention is unattended and automatically move the battery is equipped with a mobile body for cleaning the foreign matter accumulated on the surface of each solar module, or when the washing water required for cleaning is automatically returned to the groove to refill the filling or washing water One end of the moving rail is made of a configuration provided with a home station having a washing water storage and a charging part to be made.

In particular, the movable body is washed while moving to the unmanned system, the first and second movable bodies provided to the left and right sides of the solar module is moved in the vertical direction of the photovoltaic module in a state where the cleaning unit is located in the upper portion of the installed solar module It is built to be washable.

On the other hand, in the detailed description of the present invention, the directional terminology used to describe the direction in which the moving body moves to clean the solar module is expressed as upward and downward or upward and downward depending on the installation direction of the solar module.

That is, since the solar module is installed in a state inclined at a certain angle in accordance with the altitude of the sun, since one side is positioned higher in the ground than the other side, the higher side in the ground is expressed upward or upward, and from the ground The lower side is described by expressing it downward or downward.

Hereinafter, the solar module automatic cleaning system 500 according to the present invention will be described in more detail with reference to the accompanying drawings.

1 is a schematic view showing the overall configuration of a solar module automatic washing system 500 according to the present invention in a plan view, Figure 2 is a simplified block diagram showing the overall configuration of the present invention.

1 and 2 will be described in more detail with respect to the overall configuration of the solar module automatic washing system 500 according to the present invention.

As shown in FIG. 1, the solar module automatic washing system 500 according to the present invention is installed in a solar power plant P installed with a plurality of solar modules S1 to Sn maintained at predetermined intervals. It is configured to operate, one or more home station 100 is installed on one side of the photovoltaic power plant (P) in which a plurality of solar modules (S1 ~ Sn) is installed, a plurality of the home station 100 from the viewpoint Moving rail 200 is installed to maintain a constant distance to the front and both sides of the solar module (S1 ~ Sn), and is mounted on the moving rail 200 to wash each of the plurality of solar modules (S1 ~ Sn) The moving body 300 is comprised.

At least one home station (Home station) 100 is provided with a washing water replenishing unit 110 for replenishing the washing water approaching the moving body 300, and a battery charging unit 120 that can charge the discharged battery do.

The washing water replenishing unit 110, the washing water storage container 112, the washing water storage unit 112 is stored a predetermined amount or more, and the inlet of the washing water storage container provided in the mobile body close to the outlet of the washing water storage container 112 when the water outlet is in contact with the outlet Opening the washing water to be automatically supplied to the washing water reservoir and a predetermined amount of water is supplied to the washing water reservoir is made of a configuration that includes a washing water supply means 114 for automatically blocking the washing water supply when the water level is higher than the reference level.

In addition, the battery charger 120 includes a power connection terminal for connecting the power supply to the power supply terminal is connected to the ballast and the battery-side power terminal to be charged by the commercial power is lowered to the voltage required for charging the battery is introduced This configuration is made by those skilled in the art by a conventionally known means, so a detailed description thereof will be omitted.

And, starting from the home station is provided with a plurality of solar modules in front and both sides of the moving rail 200 to provide a continuous movement path of the moving body 300 is the main rail 210 necessary for the movement of the moving body 300 And, when cleaning each solar module is composed of an auxiliary rail 220 to enter the mobile unit 300 toward each solar module, the intersection provided with the mail rail and the auxiliary rail is provided at the bottom of the moving body It is preferably configured to allow for a smooth redirection of the means.

In addition, the moving rail 200 may be installed on the ground or in the air spaced a certain distance from the ground, it is possible to move the movable body 300 is composed of various types of rails according to the type and type of the moving means. Is configured to.

In addition, the moving body 300, which sequentially moves along the moving rails 200 and sequentially washes the plurality of solar modules S1 to Sn, according to a command of a set control program, is supported by the left and right moving rails, respectively. The first movable body 310 and the second movable body 330 so that the first movable body 310 and the second movable body 330 are mutually integrated structure by the suspension member 350 that interconnects both upper ends Is made of.

A pair of first moving body 310 and the second moving body 360 is provided with a plurality of cleaning means for cleaning the solar modules (S1 ~ Sn), an embodiment shown in the block diagram of FIG. In the first moving body 310, the moving means 320, the lifting support 330, the washing water storage and supply unit 340, the central control unit 350 is provided, the second moving body 360, the moving means 320 , The lifting support 330, the battery 370 is composed of a configuration provided.

In addition, the suspension member 400 is disposed across both upper ends of the first movable body 310 and the second movable body 330 so that the first movable body 310 and the second movable body 330 are integrally formed, and the suspended body is integrated. The member 400 is provided with washing means 410 necessary for washing the solar modules S1 to Sn, and maintains a proper distance from the surface of the solar modules S1 to Sn and recognizes the solar module during movement. The sensing unit 460 is provided.

On the other hand, the surface or one side of the photovoltaic module (S1) as a reference among the plurality of photovoltaic modules (S1 ~ Sn) constituting the photovoltaic power plant (hereinafter, referred to collectively as a pollutant) ) And the contamination detection sensor 450 to determine the cleaning time and the suspension member is positioned above the photovoltaic module in order to maintain an appropriate interval between the surface of the photovoltaic module and the suspension member. The sensor recognition unit 470 is provided on one side of the surface of the solar module so as to detect a signal of the sensing unit 460 provided on the hanging member side.

On the other hand, Figure 3 shows an external perspective view according to an embodiment of the moving body 300 applied to the present invention.

That is, the movable body 300 is a suspension member 400 connecting the first movable body 310 and the second movable body 360 and the first movable body 310 and the second movable body 360 which are separated into two left and right sides. It is composed of a variety of accessories for cleaning the solar module is configured, respectively, the first moving body 310 and the second moving body 360 is provided with accessories necessary for cleaning, the suspension member 400 for cleaning It consists of a configuration provided with the necessary washing means directly.

Therefore, hereinafter, a description will be given of an exemplary embodiment in which specific cleaning means are installed in the first moving body 310, the second moving body 360, and the suspension member 400, respectively, but provided in the first moving body 310 as necessary. A configuration may be installed in the second movable body 360, and conversely, a configuration provided in the second movable body 360 may be provided in the first movable body 310.

The detailed configuration of the movable body 300 applied to the present invention will be described in more detail with reference to FIG. 3.

As shown in FIG. 3, the first movable body 310 and the second movable body 360 are vertically installed on the left and right sides of one suspension member 400, and the first movable body 310 and the second movable body ( The lower end of the 360 is provided with a plurality of moving means 320 are each configured to move a pair of moving objects on the moving rail, a plurality of moving means 320 is mounted on the moving rail installed on the bottom of the solar power plant When the rotational force is set by receiving the rotational force of the driving means 325 such as a step motor separately provided in the set state, the rotation is performed by the first moving body 310 and the second moving body 360 and the suspension along the moving rail. It is configured to be able to move the member 400.

In addition, the first movable body 310 is provided with a wash water storage and supply unit 340, the wash water storage and supply unit 340 is a wash water storage container 341 and a washing water storage container 341, the washing water storage capacity of a predetermined amount; A coating solution storage container 343 and a coating liquid storage container 343, which is provided at one side of the solar module and stores the coating solution for cleaning the surface of the photovoltaic module, are diluted in the washing water filled in the washing water storage container 341, and the cleaning of the contaminants on the surface of the solar module is quick and clean. It is made of a configuration provided with a detergent reservoir 345 provided on the upper side of the washing water reservoir to be made.

The washing water and the coating liquid provided in the coating liquid storage container 343 provided in the washing water storage container 341 are configured to supply a predetermined amount for washing and coating by a separate supply pump (not shown).

In addition, one side of the first moving body 310 includes a program and a control device for moving and cleaning the solar module and controlling each part, which are necessary for washing the solar module, and the upper and lowering support 330 or suspension described below. The central control unit 350 is coupled to one end of the member 400.

In addition, the second movable body 360 installed on the opposite side corresponding to the first movable body 310 is connected to an external commercial power source to be charged or electricity produced by the solar module installed on the upper surface of the suspension member 400 to be described later. A charge / dischargeable battery 370 configured to perform self-charging is installed.

On the other hand, the lifting support 330 which is provided at the front and rear ends of the first moving body 310 and the second moving body 360, respectively, is made of a structure capable of height adjustment up and down, separately provided in the lifting drive means (335) It is configured to be possible to adjust the height, the lifting drive means 335 is preferably configured to operate independently of each other under the control of the central control unit 350.

In addition, a solar cell for charging which can supply power to the battery 370 by producing its own power on the outer upper surface of the suspension member 400 installed between the first moving body 310 and the second moving body 360. 375 is installed to allow movement of the movable body 300 and washing of the solar module without an external power supply, and the first movable body 310 or the second movable body 360 is disposed on the bottom of the suspension member 400. It consists of a configuration provided with a washing means 410 for washing the surface of the photovoltaic module using the washing water supplied from, the detailed configuration of the washing means 410 will be described later.

In addition, the sensing member 460 is provided at one side of the suspension member 400 to recognize the solar module to be washed and to maintain an appropriate distance from the solar module surface when the solar module is washed. The signal is transmitted to the central control unit 350 so that an operation necessary for cleaning may be performed at each site receiving the signal of the central control unit.

4 illustrates a rear view of the suspension member 400, and a bottom surface of the suspension member 400 moves to the left and right sides of the photovoltaic module according to the control command of the central controller 350 described above. The washing means 410 is provided across the upper portion of the 310 and the second movable body 360 to perform the washing while moving upward or downward along the slope of the solar module.

In the main configuration of the washing means 410, at least one washing water distribution pipe 411 is installed at the center in the left and right lengthwise direction of the suspension member 400, and the washing water distribution pipe 411 has a plurality of washing water at a predetermined left and right intervals. The spray nozzle 412 is installed and is configured to be sprayed to the surface of the solar module through the washing water spray nozzle 412 supplied to the washing water distribution pipe 411.

In addition, one side of the washing water distribution pipe 441 is sprayed on the surface of the photovoltaic module made of water washing the coating liquid supplied from the coating liquid storage tank provided on one side of the washing water storage tank of the first moving body to prevent contaminants from being easily attached. The coating liquid distribution pipe 413 is provided, and the coating liquid distribution pipe 413 has a plurality of coating liquid spray nozzles 414 formed at a predetermined interval so that the coating liquid supplied to the coating liquid distribution pipe 413 is sprayed in a fine particle state. It is configured to form a coating layer on the surface of the solar module.

In addition, the left and right sides of the washing water distribution pipe 411 is provided with a rotatable cylindrical brush 415 is configured to be rotated at a constant speed by receiving the rotational force of the drive motor 416 installed on one side, the drive motor ( The rotation operation of the 416 is made to rotate in accordance with the control command of the central control unit 350.

Cylindrical brush 415 is installed to the left and right sides of the washing water distribution pipe 411 is along the washing water distribution pipe 411 according to the direction in which the suspension member 400 moves in either direction of the upper or lower portion of the solar module. Only one brush that follows is rotated, and the other brush that precedes the washing water distribution pipe 411 is configured to stop, so that the surface of the photovoltaic module can be smoothly cleaned through selective rotation.

That is, after spraying the washing water on the surface of the solar module in the preceding washing water distribution pipe 411 according to the direction of movement of the suspension member 400, while the trailing brush rotates in contact with the surface of the solar module on which the washing water is buried. And the lower brush preceding the washing water distribution pipe 411 passes through the surface of the photovoltaic module that is not sprayed with the washing water, so that the suspended brush is stopped and the suspension member 400 moves in the opposite (upward) direction. In this case, the stationary brush located below the washing water distribution pipe 411 is rotated, and the upper brush, which has been rotated before, is stopped, and the washing brush is sprayed on the surface of the solar module first, and then the trailing brush is rotated. While cleaning the surface of the solar module is configured.

Then, the wiper 417 for wiping the moisture on the surface of the photovoltaic module in the outer direction of the rotary brush 415 is provided in a straight shape in the left and right length direction of the suspension member 400, so that the brush 415 rotates. It is configured to remove water from the surface of the solar module is washed, the water removal means 418 for completely removing the water on the surface of the solar module in the direction of the wiper 417 is further provided.

The wiper 417 is made of a plastic synthetic resin, rubber or the like is preferably made of a material having excellent moisture removal ability and durability without generating a scratch on the surface of the solar module when friction with the solar module surface, The water removal means 418 is made of an absorbent material having excellent water removal ability such as synthetic fiber, cotton, and sponge, and completely removes water remaining in contact with the surface of the solar module from which water is first removed by the wiper 417. It is configured to remove to prevent airborne contaminants from sticking to the solar module surface.

On the other hand, Figure 5 is a simple block diagram of the main configuration of the central control unit 500 for controlling the solar module automatic washing system 600 according to the present invention as a whole.

The central control unit 500 has a configuration in which a predetermined microcomputer is provided to control each part according to a signal of a program and a sensor for which the entire apparatus is operated.

Main components of the central control unit 500 include control of each part such as the number of solar modules within the area to be cleaned in the photovoltaic power plant, the path information of the moving rail for moving the moving body, and the washing information of the solar module. The control unit is programmed and stored in the memory unit 510 and a communication unit 512 for transmitting and receiving necessary information such as washing information and fault information to a remote administrator via a public Internet network.

In addition, when the washing water is exhausted or the power of the battery falls below the reference value while the mobile unit 300 moves to wash the solar module, the washing operation of the solar module is stopped and forced to the home station 100. The home return control unit 514 controls to return to the fault, and the fault monitoring unit 516 and the fault monitoring unit 516 to detect a fault occurrence alarm signal in real time to monitor the operation state of each device. The failure generation alarm unit 518 that is generated is made of a configuration that is further provided.

In addition, the charging and discharging solar module provided on the upper surface of the suspension member 400 and the management of the charging and discharging state of the current and voltage of the battery 370 that supplies power to generate the power required for the operation and cleaning of each device The battery charge management unit 520 for monitoring and managing the storage of the power produced through the battery 370, and the mobile unit 300 moves to the position where the photovoltaic module to be washed is installed to the upper photovoltaic module The solar module detection and gap control unit 530 is provided to detect the solar module so that the suspension member is positioned and determine whether the gap between the solar module and the bottom of the suspension member is maintained at an appropriate interval. Consists of the configuration.

 In addition, the wash water storage and supply unit 340 in real time to monitor the wash water stored in the water level below the reference level, the wash water monitoring unit 540 for generating a wash water supply signal and the reference water level by monitoring the appropriate level of the coating liquid stored in the coating solution reservoir In the following case, the coating solution monitoring unit 550 is configured to generate a signal so as to replenish the coating solution.

In addition, a plurality of moving parts driving control unit 560 is provided at the lower end of the first moving body 310 and the second moving body 360 to control the driving of the moving means 320 that is responsible for the movement of each moving body (310,360) and Washing water distribution pipe in the washing water storage and supply unit 340 to wash the solar module by supplying the washing water to the washing means 410 provided on the bottom surface of the hanging member 400 in accordance with the movement of the suspension member 400 ( 411 is provided with a washing water supply control unit 570 for controlling the washing water supply.

In addition, when the washing water is supplied to the central control unit 500 under the control of the washing water supply control unit 570 and sprayed onto the surface of the solar module, the rotary brush is rotated to wash various contaminants adhered to the solar module surface. The brush motion control unit 580 for controlling the rotation of the brush so as to extend the height of the suspension member by individually or simultaneously controlling the plurality of lifting support 330, which is installed vertically at the front and rear ends of each moving body and configured to adjust the height, respectively. The lifting support lifting control unit 590 for adjusting is made of a configuration provided.

The washing water monitoring unit 540 and the coating liquid monitoring unit 550 receive signals from the water level sensors 545 and 555 provided in the washing water storage container 341 and the coating liquid storage container 343, respectively, to monitor the level of the washing water and the level of the coating liquid. The moving means drive control unit 560 controls the speed, the rotation speed, and the rotational direction of the rotation motor 325 for directly controlling the rotation of the moving means 320. ) Is moved by the set distance.

In addition, the washing water supply control unit 570 controls the operation of the washing water supply pump provided on one side of the washing water storage container and the coating liquid supply pump provided on one side of the coating liquid storage container to supply the washing water and the coating liquid with the washing means provided on the suspension member 400. It is configured to be adjustable.

In addition, the brush motion control unit 580 to control the rotational speed and the rotation direction of the rotary brush 415 is provided with at least one washing means 410 to wash the surface of the solar module in accordance with the washing water spray It is composed.

On the other hand, Figure 6 and Figure 7 schematically shows the use state for washing the solar module (S1) in one embodiment of the moving body 300 in the solar module automatic washing system according to the present invention.

As shown in FIG. 6, in the solar module automatic washing system according to the present invention, the movable body 300, that is, the first movable body 310 and the second movable body 360, which are integrally formed with the suspension member 400, move. While moving along the rail 200 and reaching the photovoltaic module S1 to be cleaned, the moving means 320 which has been moved in the straight direction is controlled by the moving means drive control unit 560 so that the mail rail and the auxiliary rail After the vehicle is stopped at the intersection crossing, the vehicle is turned at right angles to the solar module, and then the first moving body 310 and the second moving body 360 move to the auxiliary rails 220 provided on both the left and right sides of the solar module. The member 400 is positioned above the lower side of the solar module S1.

In the state where the suspension member 400 is positioned on the lower side of the solar module S1, the sensing unit 460 provided on the suspension member is connected to the solar module through the sensor recognition unit 470 provided on the solar module side. The position and the gap are sensed, and the signal detected by the sensing unit is provided on the solar module surface and the bottom surface of the hanging member according to the control of the solar module sensing and gap adjusting unit 530 provided in the central controller 500. Appropriate spacing is maintained between the cleaning means.

After determining whether the distance between the photovoltaic module surface and the bottom of the hanging member is determined based on the signal detected by the sensing unit 460 is within the reference interval set by the program, the lift support lifting control unit The height of the suspension member 500 is automatically adjusted through the height control of the lifting support 330 by operating the lifting driving means through 590.

Of course, the suspension member 400 is set to a predetermined slope to have a slope corresponding to the installation angle of the photovoltaic module (S1), from the lower side of the photovoltaic module (S1) to the upper or lower side of the solar module. During the moving process, the washing operation is performed along the upper surface of the solar module while vertical movement is performed while the predetermined slope is maintained by the real-time detection signal of the sensing unit 460 and the control command of the solar module detection and spacing controller 530. Will be done.

After the washing of one solar module is completed, the first moving body 310 and the second moving body 360 are exited to the main rail 210 again, and the movement of the moving means 320 is performed after a predetermined distance. The movable body moved along the main rail 210 by a predetermined distance is stopped at the front of the solar module to be washed next according to the control signal of the solar module sensing and gap adjusting unit 530 and is provided at the bottom of each movable body. After the moving means 320 is turned at a right angle of 90 degrees and moves along the auxiliary rail 220, the basic cleaning requirements such as the position and height of the suspension member 400 are automatically checked, and then the lifting and lowering operation of the suspension member is supplied. While the back is made sequentially or simultaneously, the washing operation of the solar module is performed.

On the other hand, during the cleaning of the solar module surface while moving along the moving rail, when the wash water of the wash water reservoir falls below the reference level, or the voltage (current) of the battery falls below the reference voltage (current) the moving body is the central control unit According to the control command of the stop the washing operation and return to the home station to replenish the exhausted washing water or to charge the discharged battery is automatically performed.

That is, the washing water reservoir is provided with a water level sensor for detecting a full state and a low water state, so that when the washing water falls below the low water position during the washing, the water level sensor is detected. The signal is transmitted to the central control unit, and when the central control unit stops all cleaning-related control commands and issues the home station return command, the vehicle drive control unit sends a signal to the moving means to move the moving object from the auxiliary rail to the main rail, and then By determining the position and controlling the rotational direction of the moving means through the moving means drive control unit so that the moving body can be moved toward the home station is controlled to return the moving body to the home station.

When the moving object is moved to the set position of the home station, the washing water supply pipe of the washing water reservoir provided in the first moving unit is connected to the washing water supplement portion of the home station to replenish the washing water or charge the discharged battery (FIG. 1). Reference).

At this time, the washing water supply pipe 342 provided at one side of the washing water storage container 341 is fitted into the washing water supplying means 114 provided at the washing water storage container 112, and the inner water channel of the washing water supply opening, which was closed, is opened to the washing water storage container 112. The stored washing water is filled into the washing water storage container 341 and filled, and the washing water flowing into the washing water storage container 341 is coupled to the washing water supply means 114 by moving the moving object when the washing water reaches the full water level by the water level sensor. The washing water supply pipe 342 is separated to complete the washing water supply.

In addition, when the discharged battery 370 is charged, the connection terminal 375 provided on one side of the battery, that is, the outer side of the lifting support is automatically connected to the charging terminal of the battery charger 120 side provided in the home station, thereby charging is performed. When the voltage of the battery rises above the set reference level, the moving object moves again under the control of the central controller, and the connection terminal is disconnected from the charging terminal, thereby completing the charging.

As described above, in the solar module automatic washing system according to the present invention, after a pair of moving bodies moves around a plurality of solar modules, a suspension member is positioned above the solar module to move upward and downward in the solar module. In the washing water is sprayed on the solar module, using the cleaning means provided on the bottom surface of the suspension member to be washed on the surface of the solar module.

In addition, after the cleaning of one solar module is completed, the cleaning operation of the solar modules is performed one by one while sequentially moving back to the surrounding solar modules, which is provided on the surface of the reference solar module (S1) within the area set as the washing area. It is configured to automatically wash through the pollution detection signal of the pollution detection sensor.

In addition, when the wash water stored in the wash water reservoir provided in the mobile body is exhausted or the power of the battery falls below the reference value, the mobile body is automatically configured to return to the home station by the control command of the central control unit so that the necessary washing water replenishment or battery charging work is performed. do.

In the above detailed description of the present invention, a configuration and an operation process of a system for cleaning a solar module with respect to an embodiment of the accompanying drawings have been described, but those skilled in the art can make various modifications within the scope of the technical idea of the present invention. will be.

100: home station 110: washing water supplement
112: wash water storage 114: washing water supply means
120: battery charger
200: moving rail 210: main rail
220: auxiliary rail
300: moving body 310: first moving body
320: moving means 325: rotating motor
330: lifting support 335: lifting driving means
340: washing water storage and supply unit 341: washing water storage container
343: coating liquid storage container 345: detergent storage container
350: central control unit 360: second moving body
370: battery 375: connection terminal
380: sensing unit
400: suspension member 405: charging solar module
410: washing means 411: washing water distribution pipe
412: spray nozzle 413: coating liquid distribution pipe
414: injection nozzle 415: rotating brush
416: rotary motor 417: wiper
418: water removal means
450: pollution detection sensor 460: sensing unit
470: sensor recognition unit
500: central control unit 510: memory unit
512 communication unit 514 home return control unit
516: failure monitoring unit 518: failure occurrence alarm unit
520: Battery charge management unit 530: Solar module detection and interval control unit
540: washing water monitoring unit 545: water level sensor
550: coating liquid monitoring unit 555: water level sensor
560: driving means control unit 570: washing water supply control unit
580: brush motion control unit 590: lifting support lifting control unit
600: PV module automatic washing system
S1 ~ Sn: Solar Module P: Solar Power Plant

Claims (7)

First and second movable bodies installed at a predetermined height upwards from the ground and connected to each other by a suspension member in a state in which they are installed at a predetermined distance from both sides;
Washing water storage and supply unit which is provided on any one or both of the first and second mobile body to supply a cleaning agent for cleaning the solar module under the control of the central control unit mounted on the first or second mobile body;
A central control unit connected to an external power source or a battery mounted on the first moving body or the second moving body to perform charging, and having a control program for controlling the whole of the apparatus;
At least one moving means provided at a bottom of the first and second moving bodies to receive the power from the battery and move the first and second moving bodies while rotating according to a control command of the central controller;
Under the control of the central controller, the first and second movable bodies move to the left and right sides of the photovoltaic module to wash the surface of the photovoltaic module using the washing water supplied from the washing water storage and supply unit. A washing unit provided in the suspension member interconnecting the upper ends of the second moving bodies;
The mobile means is rotated under the control of the central control unit is seated on the upper surface of the solar power plant so that the first and second mobile body can be moved between the plurality of solar modules to automatically clean the surface of the solar module. Mobile rail installed in the; Automatic cleaning system for a solar module comprising a. The method of claim 1,
At one end of the mobile rail, when the first and second mobile bodies are moved along the mobile rail, the washing of the solar modules in the set area is completed or the battery is discharged below the reference value during the cleaning. A home station which stops the washing operation and automatically returns the first and second moving bodies to recharge the discharged battery or to replenish the washing water when the temperature decreases below the reference value. Module automatic cleaning system. The method of claim 1,
The solar module is installed on the upper surface of the suspension member,
The electricity produced by the photovoltaic module is configured to be stored in a battery provided in the first body or the second body of the photovoltaic module, characterized in that the photovoltaic module is cleaned using the produced power. Automatic cleaning system. The method according to claim 2 or 3,
The cleaner supply unit,
Washing water storage passage for supplying a certain amount of washing water,
A washing water supply pump for forcibly supplying the washing water stored in the washing water storage container to the washing unit provided on the bottom surface of the suspension member under the control of the central control unit;
A detergent storage container, which is separately provided at one side of the washing water storage container so as to be diluted in a predetermined ratio with the washing water stored in the washing water storage container, so that detergent is automatically supplied into the washing water storage container;
Sprayed on the surface of the photovoltaic module washed with washing water to prevent the adhesion of foreign substances and to improve the solar light receiving efficiency, the coating liquid is stored inside so as to spray the coating liquid by a separate coating liquid spray pump separately on one side of the washing water reservoir Coating liquid storage container provided; Automatic cleaning system of a solar module, characterized in that consisting of a configuration. The method of claim 4, wherein
Front and rear ends of the first moving body and the second moving body are provided with a lifting support for adjusting the height of the suspension member while the lifting operation is made independently under the control of the central control unit.
The suspension member positioned above the photovoltaic module measures the distance between the photovoltaic module and the suspension member in real time so as to maintain the upper surface of the photovoltaic module and the set reference interval, and transmits the result to the central controller. Distance sensing means for raising and lowering the support is provided on any one or both sides of the hanging member and the solar module,
At least one of the plurality of photovoltaic modules is further provided with a pollution detection sensor on the reference photovoltaic module surface to measure the degree of contamination of the photovoltaic module surface,
The solar module and the automatic control system of the solar module, characterized in that the solar module and the central control unit further comprises a wireless communication module is installed so that the wireless communication between the solar module and the pollution detection sensor is provided. The method of claim 4, wherein
The washing unit,
1 or more lines of washing water distribution pipe installed in the width direction of the suspension member,
A plurality of washing water spray nozzles provided at predetermined intervals in the washing water distribution pipe;
A water removal wiper installed at one side or both sides of the washing water distribution pipe to remove water from the surface of the solar module to which the washing water is sprayed from the washing water spray nozzle;
A moisture removal member installed at one side of the moisture removal wiper and removing moisture remaining in the solar module;
And a coating liquid spraying means installed at one side of the washing water distribution pipe and spraying the coating liquid stored in the coating liquid storage tank to the surface of the solar module from which water is removed under the control of the central controller. Automatic cleaning system of optical module.
The method of claim 6,
The central control unit includes a fault monitoring unit for determining whether or not the movement means provided in the lower portion of each moving body and the operation of the washing unit provided in the hanging member in real time to determine whether there is a failure;
According to an aspect of the present invention, a fault alarm unit for generating a signal to wirelessly notify a registered administrator of a fault when it is determined that a fault occurs in a specific part according to a signal of the fault monitoring unit is provided. Automatic cleaning system of optical module.

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