Photovoltaic module cleaning system

Abstract

The invention discloses a photovoltaic module cleaning system, and relates to the technical field of photovoltaic module production. The photovoltaic module cleaning system comprises a cleaning module, a first controller, a detection unit and a second controller. The first controller is in signal connection with the cleaning module and can send a first control signal to the cleaning module according to a working condition signal of the upstream controller, and the cleaning module cleans the photovoltaic module according to the first control signal; the detection unit is arranged on the cleaning module and used for detecting working condition data of the cleaning module under the first control signal; the second controller has a preset threshold value, the second controller is in signal connection with the detection unit and the first controller, the second controller obtains deviation data obtained by comparing the working condition data with the preset threshold value according to the working condition data, and the second controller sends a second control signal to the first controller according to the deviation data; the first controller generates and sends a third control signal to the cleaning module according to the second control signal, and the cleaning module cleans the photovoltaic module according to the third control signal.

Description

Technical Field

[0001] The present application relates to the technical field of photovoltaic module production, and in particular to a photovoltaic module cleaning system. Background Art

[0002] The photovoltaic industry is one of the new energy industries that has developed rapidly in recent years. Every link in its production process directly affects the final quality and performance of the product. The silicon wafer cleaning process is a key step. It removes impurities and pollutants on the surface of the silicon wafer to ensure the smooth operation of subsequent production links and product quality.

[0003] In the prior art, the silicon wafer cleaning process is usually equipped with cleaning equipment, but the cleaning process lacks precise control, which affects the cleaning effect. At the same time, it consumes a lot of energy, increases production costs, and affects environmental protection.

[0004] Therefore, the above problems need to be solved urgently. Summary of the invention

[0005] The purpose of the embodiments of the present application is to provide a photovoltaic module cleaning system to solve the problem that the cleaning equipment used in the silicon wafer cleaning process in the prior art lacks precise control over its cleaning time and cleaning process, which affects the cleaning effect, consumes a lot of energy, increases production costs, and affects environmental protection.

[0006] In order to solve the above technical problems, the embodiments of the present application provide the following technical solutions:

[0007] The present application provides a photovoltaic module cleaning system, comprising:

[0008] A cleaning module, the cleaning module is used to clean photovoltaic modules;

[0009] A first controller, the first controller is connected to the cleaning module signal, and can send a first control signal to the cleaning module according to the working condition signal of the upstream controller, and the cleaning module cleans the photovoltaic module according to the first control signal;

[0010] A detection unit, which is arranged at the cleaning module and is used to detect working condition data of the cleaning module under the first control signal;

[0011] a second controller, wherein the second controller has a preset threshold value, the second controller is connected to the detection unit and the first controller by signal, the second controller obtains deviation data of the operating condition data compared with the preset threshold value according to the operating condition data, and the second controller sends a second control signal to the first controller according to the deviation data;

[0012] The first controller generates and sends a third control signal to the cleaning module according to the second control signal, and the cleaning module cleans the photovoltaic component according to the third control signal.

[0013] In some embodiments, the aforementioned photovoltaic module cleaning system further includes: a touch display unit, which is signal-connected to the second controller and the first controller; the touch display unit has at least a first mode and a second mode. In the first mode, the touch display unit displays and records the operating condition data and deviation data obtained by the second controller. In the second mode, the touch display unit can send a fourth control signal that can cover the second control signal to the first controller. The first controller generates and sends a fifth control signal to the cleaning module according to the fourth control signal. The cleaning module cleans the photovoltaic module according to the fifth control signal.

[0014] In some embodiments, the aforementioned photovoltaic module cleaning system, wherein the cleaning module includes: a conveying unit, the conveying unit is signal-connected to the first controller, the conveying unit is provided with at least two sensors at intervals on the extension path to divide the conveying unit into at least three conveying sections; the operating condition data includes the conveying speed of each conveying section, the preset threshold includes the conveying speed threshold, the deviation data includes the conveying speed deviation value of the conveying speed of each conveying section compared with the conveying speed threshold, and the second controller sends a second control signal to the first controller according to the conveying speed deviation value.

[0015] In some embodiments, the aforementioned photovoltaic module cleaning system, wherein the cleaning module also includes: a roller brush unit, a spray unit and a drying unit, the roller brush unit, the spray unit and the drying unit are connected to the first controller signal, and are respectively used for roller brushing, spray cleaning and purge drying; there are two sensors to divide the conveying unit into three conveying sections, and the three conveying sections correspond to the roller brush unit, the spray unit and the drying unit respectively; the operating condition data also includes the motor parameters of the roller brush unit, the spray parameters of the spray unit and the purge parameters of the drying unit, the preset thresholds include the motor parameter threshold, the spray parameter threshold and the purge parameter threshold, and the deviation data include the motor parameter deviation value compared with the motor parameter threshold, the spray parameter deviation value compared with the spray parameter threshold, and the purge parameter deviation value compared with the purge parameter threshold.

[0016] In some embodiments, the aforementioned photovoltaic module cleaning system, wherein the spray parameters include nozzle pressure and cleaning liquid flow rate, the spray parameter threshold includes nozzle pressure threshold and cleaning liquid flow rate threshold, the deviation data includes nozzle pressure deviation value compared with nozzle pressure threshold, cleaning liquid flow rate and cleaning liquid flow rate deviation value compared with cleaning liquid flow rate threshold; purge parameters include hot air temperature and purge pressure, the purge parameter threshold includes hot air temperature threshold and purge pressure threshold, the deviation data includes hot air temperature deviation value compared with hot air temperature threshold, purge pressure and purge pressure deviation value compared with purge pressure threshold.

[0017] In some embodiments, the aforementioned photovoltaic component cleaning system further includes: a monitoring unit, which is disposed on the conveying unit and connected to the touch display unit, and the monitoring unit can obtain the real-time position information of the photovoltaic component on the conveying unit and send it to the touch display unit for display and recording.

[0018] In some embodiments, the aforementioned photovoltaic module cleaning system further includes: a delay unit, which is connected to the second controller signal, and the delay unit sends a sixth control signal to the first controller before the second controller sends the second control signal to the first controller based on the deviation data obtained by the second control unit, and the first controller generates and sends a seventh control signal to the conveying unit based on the sixth control signal to stop the conveying unit.

[0019] In some embodiments, the aforementioned photovoltaic module cleaning system, wherein the cleaning module also includes: a waste liquid recovery pipeline, the waste liquid recovery pipeline includes a first pipeline and a second pipeline, the two ends of the first pipeline are respectively connected to the spray unit input end and the waste liquid recovery device input end, the waste liquid recovery device can process the waste liquid output from the spray unit output end, and the second pipeline is respectively connected to the waste liquid recovery device output end and the spray unit input end.

[0020] In some embodiments, the aforementioned photovoltaic component cleaning system, wherein the cleaning module further includes: a filtering unit, the filtering unit includes a first filter element and a second filter element, the first filter element is arranged on the second pipeline, and the second filter element is arranged on the liquid supply pipeline connected to the input end of the spray unit.

[0021] In some embodiments, the aforementioned photovoltaic component cleaning system further includes: an alarm unit, the alarm unit is connected to the second controller signal, the alarm unit has a preset alarm threshold, and if the deviation data is greater than the preset alarm threshold, the alarm unit alarms.

[0022] Through the above technical solution, the photovoltaic module cleaning system of the present application has at least the following advantages:

[0023] The present application provides a photovoltaic module cleaning system, including a cleaning module, a first controller, a detection unit and a second controller; the cleaning module is used to clean the photovoltaic module; the first controller is connected to the cleaning module signal, and can send a first control signal to the cleaning module according to the working condition signal of the upstream controller, and the cleaning module cleans the photovoltaic module according to the first control signal; the detection unit is set in the cleaning module, and is used to detect the working condition data of the cleaning module under the first control signal; the second controller has a preset threshold, the second controller is connected to the detection unit and the first controller signal, the second controller obtains the deviation data of the working condition data compared with the preset threshold according to the working condition data, and the second controller sends a second control signal to the first controller according to the deviation data; wherein the first controller generates and sends a third control signal to the cleaning module according to the second control signal, and the cleaning module cleans the photovoltaic module according to the third control signal. The present application realizes precise control of the cleaning module during the cleaning operation through the setting of the first controller, the detection unit and the second controller, obtains the working condition data of the first control signal sent by the cleaning module in the first controller through the detection unit, and makes the second controller send the second control signal to the first controller based on the deviation between the working condition data and the preset threshold, and realizes the feedback loop of system control. And the first controller sends a third control signal to the cleaning module according to the second control signal, and the cleaning module receives the third control signal to clean the photovoltaic module with the second parameter, thereby realizing the closed-loop control of the system. Then, through the photovoltaic module cleaning system of the present application, the cleaning module can realize the precise closed-loop control with feedback loop, and obtain the working condition data through the detection unit in real time, and intelligently control and adjust the cleaning module to operate under appropriate parameters, thereby ensuring the cleaning effect and realizing the energy efficiency management of the system, thereby realizing energy consumption control, thereby reducing production costs and benefiting environmental protection. Through the application of the present application, the cleaning equipment used in the silicon wafer cleaning process in the prior art is solved because of the lack of precise control of its cleaning time and cleaning process, which affects the cleaning effect, consumes a lot of energy, increases production costs, and affects environmental protection.

[0024] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present application in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 A schematic diagram of the structure of a photovoltaic module cleaning system provided in an embodiment of the present application is shown;

[0027] Figure 2 A schematic diagram of the structure of a cleaning module of a photovoltaic module cleaning system provided in an embodiment of the present application is shown;

[0028] Figure 3 The structural diagram of a spray unit of a photovoltaic module cleaning system provided in an embodiment of the present application is schematically shown.

[0029] Description of reference numerals:

[0030] 1. Cleaning module; 11. Conveying unit; 12. Roller brush unit; 13. Spraying unit; 14. Drying unit; 15. Waste liquid recovery pipeline; 16. Waste liquid recovery device; 17. Filter unit; 111. Conveying section; 131. Liquid supply pipeline; 151. First pipeline; 152. Second pipeline; 171. First filter element; 172. Second filter element;

[0031] 2. First controller; 3. Detection unit; 4. Second controller; 5. Touch display unit; 6. Monitoring unit; 7. Delay unit; 8. Alarm unit.

[0032] Implementation of tool parts

[0033] The following is a further detailed description of the embodiments of the present disclosure in conjunction with the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to exemplarily illustrate the principles of the present disclosure, but cannot be used to limit the scope of the present disclosure. The present disclosure can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

[0034] The present disclosure provides these embodiments to make the present disclosure thorough and complete, and to fully express the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specified, the relative arrangement of the components and steps, the composition of the materials, the numerical expressions and the numerical values ​​described in these embodiments should be interpreted as merely exemplary, rather than as limiting.

[0035] It should be noted that, in the description of the present disclosure, unless otherwise specified, the meaning of "multiple" is greater than or equal to two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0036] In addition, the words "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. "Vertical" does not mean vertical in the strict sense, but is within the tolerance range. "Parallel" does not mean parallel in the strict sense, but is within the tolerance range. "Include" or "comprising" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements.

[0037] It should also be noted that in the description of the present disclosure, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or a component connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to the specific situation. When a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0038] All terms used in the present disclosure have the same meanings as those understood by those of ordinary skill in the art to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, for example, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined as such herein.

[0039] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0040] like Figure 1 As shown, the present application provides a photovoltaic component cleaning system, including a cleaning module 1, a first controller 2, a detection unit 3 and a second controller 4; the cleaning module 1 is used to clean the photovoltaic component; the first controller 2 is signal-connected to the cleaning module 1, and can send a first control signal to the cleaning module 1 according to the working condition signal of the upstream controller, and the cleaning module 1 cleans the photovoltaic component according to the first control signal; the detection unit 3 is arranged in the cleaning module 1, and is used to detect the working condition data of the cleaning module 1 under the first control signal; the second controller 4 has a preset threshold, the second controller 4 is signal-connected to the detection unit 3 and the first controller 2, the second controller 4 obtains deviation data of the working condition data compared with the preset threshold according to the working condition data, and the second controller 4 sends a second control signal to the first controller 2 according to the deviation data; wherein, the first controller 2 generates and sends a third control signal to the cleaning module 1 according to the second control signal, and the cleaning module 1 cleans the photovoltaic component according to the third control signal.

[0041] Specifically, in the production process of photovoltaic modules, in order to meet production needs, it is necessary to achieve appropriate cleaning effects and cleaning efficiency. The cleaning module 1 in this application includes but is not limited to cleaning process units such as roller brushes, robot brushing, ultrasonic cleaning, dry cleaning, spraying, and drying. The specific configuration is based on the actual needs of the photovoltaic module cleaning system.

[0042] The present application obtains the operating data of the first control signal sent by the cleaning module 1 to the first controller 2 through the detection unit 3. The operating data includes but is not limited to the conveying speed of the photovoltaic components in the cleaning module 1, the output power of the roller brush motor, the nozzle pressure, the cleaning medium concentration, the dry hot air temperature, the purge pressure, etc. The detection unit 3 can be one or more, without specific limitation, and can be set according to the corresponding operating data to be detected.

[0043] The present application realizes precise control of the cleaning module 1 during the cleaning operation by setting up the first controller 2, the detection unit 3 and the second controller 4, obtains the working condition data through the detection unit 3, and enables the second controller 4 to send a second control signal to the first controller 2 based on the deviation between the working condition data and the preset threshold value, thereby realizing the feedback loop of the system control. In addition, the first controller 2 sends a third control signal to the cleaning module 1 according to the second control signal, and the cleaning module 1 receives the third control signal and cleans the photovoltaic module with the second parameter, thereby realizing the closed-loop control of the system. Then, the photovoltaic module cleaning system of the present application can realize the precise closed-loop control with a feedback loop for the cleaning module 1, obtains the working condition data through the detection unit 3 in real time, and intelligently controls and adjusts the cleaning module 1 to operate under appropriate parameters, thereby ensuring the cleaning effect and realizing the energy efficiency management of the system, thereby realizing energy consumption control, thereby reducing production costs and benefiting environmental protection.

[0044] In one embodiment of the present application, after the photovoltaic module is output from the upstream process of the cleaning machine, when it passes through the upstream process end sensor, the upstream controller sends a signal to the first controller 2. After receiving the signal sent by the upstream controller, the first controller 2 sends a receiving signal to the upstream process. The first controller 2 sends a first control signal to the DC motor of the roller brush process unit in the cleaning module and the inverter of the first segment of the corresponding conveying process unit. The roller brush process unit and the corresponding conveying process unit start working. The brush of the roller brush process unit moves to sweep the upper and lower surfaces of the photovoltaic module during the conveying process. When passing the end of the first segment, the first controller 2 controls the solenoid valve of the spray process unit to open, and controls the inverter of the second segment of the conveying process unit corresponding to the spray process unit to operate. When passing the end of the second segment, the nozzle of the spray process unit sprays the cleaning medium to clean the upper and lower surfaces of the photovoltaic module. When passing the end of the second segment, the first controller 2 controls the purge solenoid valve of the drying process unit to open, and controls the inverter of the third segment of the conveying process unit corresponding to the drying process unit to operate. During the conveying process, hot air drying and air flow blowing are carried out in the drying process unit. During the conveying process unit, the photovoltaic components respectively undergo the rolling brush process unit, the spraying process unit and the drying process unit. The detection unit 3 obtains the working condition data in the process. The second controller 4 obtains the deviation data compared with the preset threshold value according to the working condition data, and generates a second control signal to the first controller 2 according to the deviation data to eliminate the deviation occurring in the cleaning process, forming a precise closed-loop control with a feedback loop, so that the cleaning operation of the photovoltaic components is carried out under the preset working conditions with good cleaning efficiency and cleaning effect. After receiving the second control signal, the first controller 2 generates and sends the third control signal to re-control any unit that produces the deviation, and completes the cleaning of the photovoltaic components and conveys them to the downstream process.

[0045] The present application provides a photovoltaic module cleaning system, including a cleaning module 1, a first controller 2, a detection unit 3 and a second controller 4; the cleaning module 1 is used to clean the photovoltaic module; the first controller 2 is signal-connected to the cleaning module 1, and can send a first control signal to the cleaning module 1 according to the working condition signal of the upstream controller, and the cleaning module 1 cleans the photovoltaic module according to the first control signal; the detection unit 3 is arranged in the cleaning module 1, and is used to detect the working condition data of the cleaning module 1 under the first control signal; the second controller 4 has a preset threshold, the second controller 4 is signal-connected to the detection unit 3 and the first controller 2, the second controller 4 obtains deviation data of the working condition data compared with the preset threshold according to the working condition data, and the second controller 4 sends a second control signal to the first controller 2 according to the deviation data; wherein, the first controller 2 generates and sends a third control signal to the cleaning module 1 according to the second control signal, and the cleaning module 1 cleans the photovoltaic module according to the third control signal. The present application realizes precise control of the cleaning module 1 during the cleaning operation by setting the first controller 2, the detection unit 3 and the second controller 4. The detection unit 3 obtains the working condition data of the first control signal sent by the cleaning module 1 to the first controller 2, and the second controller 4 is based on the deviation between the working condition data and the preset threshold value, and sends the second control signal to the first controller 2 according to the deviation data, thereby realizing the feedback loop of the system control. And the first controller 2 sends a third control signal to the cleaning module 1 according to the second control signal, and the cleaning module 1 receives the third control signal to clean the photovoltaic module with the second parameter, thereby realizing the closed-loop control of the system, and then the photovoltaic module cleaning system of the present application can realize the precise closed-loop control with feedback loop for the cleaning module 1, and obtains the working condition data through the detection unit 3 in real time, and intelligently controls and adjusts the cleaning module 1 to run under appropriate parameters, thereby ensuring the cleaning effect and realizing the energy efficiency management of the system, thereby realizing energy consumption control, thereby reducing production costs and benefiting environmental protection. Through the application of the present application, the cleaning equipment used in the silicon wafer cleaning process in the prior art is solved because of the lack of precise control of its cleaning time and cleaning process, which affects the cleaning effect, consumes a lot of energy, increases production costs, and affects environmental protection.

[0046] like Figure 1 As shown, in some embodiments, it also includes: a touch display unit 5, which is signal-connected to the second controller 4 and the first controller 2; the touch display unit 5 has at least a first mode and a second mode. In the first mode, the touch display unit 5 displays and records the operating data and deviation data obtained by the second controller 4. In the second mode, the touch display unit 5 can send a fourth control signal that can cover the second control signal to the first controller 2. The first controller 2 generates and sends a fifth control signal to the cleaning module 1 according to the fourth control signal. The cleaning module 1 cleans the photovoltaic components according to the fifth control signal.

[0047] Specifically, in order to realize real-time monitoring of the conveying and cleaning process and statistical reading of subsequent cleaning records, and at the same time facilitate the overall scheduling and control of the photovoltaic module cleaning system, the present application is provided with a touch display unit 5, which can be a device that can realize touch and display functions and integrates a display module, an upper computer (Upper Computer), an MES (Manufacturing Execution System), an EMS (Energy Management System), etc., and can realize the overall scheduling, process management, parameter control, etc. of the photovoltaic module cleaning system.

[0048] In the present application, the touch unit has at least a first mode and a second mode to cope with different usage demand scenarios. In the first mode, the touch display unit 5 displays and records the working condition data and deviation data obtained by the second controller 4. In this mode, the touch display unit 5 is used to monitor the system status and parameters, and does not directly intervene in the control logic. In the second mode, the touch display unit 5 can send a fourth control signal that can cover the second control signal to the first controller 2, and the first controller 2 produces and sends a fifth control signal to the cleaning module 1 according to the fourth control signal. The cleaning module 1 cleans the photovoltaic module according to the fifth control signal. In this mode, the touch display unit 5 can realize the regulation of the photovoltaic module cleaning system through the operation of the operator. The present application can set a verification program between the first mode and the second mode to avoid erroneous control caused by the operator's accidental touch. In addition, the touch display unit 5 of the present application is not limited to the first mode and the second mode, and a variety of different modes can be set. For example, a sentinel mode can be set for the touch display unit 5, which can monitor and alarm at any time while meeting the monitoring and recording functions; a multi-level authority mode can also be set for the touch display unit 5 to ensure safety and stability in the production process. An adaptive adjustment mode can also be set for the touch display unit 5. For example, when the operating condition data differs greatly from the preset threshold, a segmented adjustment control strategy can be adopted to make the operating condition data gradually meet the preset threshold requirements through several adjustments, so as to improve the smoothness of the adjustment and production safety. The above examples are only a partial enumeration of the modes of the touch display unit 5. The specific configuration is adjusted according to actual production needs and is not limited here.

[0049] In some embodiments, the cleaning module 1 includes: a conveying unit 11, the conveying unit 11 is signal-connected to the first controller 2, and the conveying unit 11 is provided with at least two sensors at intervals on the extension path to divide the conveying unit 11 into at least three conveying sections 111; the operating condition data includes the conveying speed of each conveying section 111, the preset threshold includes the conveying speed threshold, the deviation data includes the conveying speed deviation value of the conveying speed of each conveying section 111 compared with the conveying speed threshold, and the second controller 4 sends a second control signal to the first controller 2 according to the conveying speed deviation value.

[0050] Specifically, the cleaning module 1 of the present application includes a conveying unit 11, which can be in the form of a conveyor belt or a conveying roller group, etc., which can realize the transmission of photovoltaic components. The conveying unit 11 is provided with at least two sensors at intervals on its extension path to divide the conveying unit 11 into at least three conveying sections 111. The at least three conveying sections 111 can be continuous, or a structure that can realize the connection and transmission function of the photovoltaic components can be provided between the transmission sections, without specific limitations. The present application sets at least three conveying sections 111 to correspond to the cleaning process units in different cleaning modules, such as roller brushes, robot brushes, ultrasonic cleaning, dry cleaning, spraying, drying and other different cleaning process units. The specific configuration depends on the actual needs of the system. The sensor is set between two adjacent conveying sections 111. On the one hand, it can enable the photovoltaic component cleaning system to obtain the position information of the photovoltaic component. On the other hand, the position setting of the sensor facilitates the first controller 2 to control different cleaning process units.

[0051] In the present application, the detection unit 3 can detect the conveying speed of each conveying section 111, and the preset threshold includes a conveying speed threshold. In the actual cleaning operation of the photovoltaic module, considering that different cleaning process units have different operation times required to achieve their corresponding cleaning effects, different cleaning process units need to have different speeds of the conveying sections 111. The preset thresholds in the present application include conveying speed thresholds, that is, different conveying speed threshold limits that meet the cleaning effect are set corresponding to different cleaning process units. The conveying speeds of different conveying sections 111 are obtained according to the detection unit 3 to obtain the conveying speed deviation value compared with the preset conveying speed threshold. The second controller 4 sends a second control signal to the first controller 2 to keep the conveying speeds of different conveying sections 111 within the preset conveying speed threshold, thereby achieving stable and efficient cleaning operations.

[0052] In some embodiments, the cleaning module 1 also includes: a roller brush unit 12, a spray unit 13 and a drying unit 14, which are connected to the first controller 2 by signal and are used for rolling brushing, spray cleaning and purging drying respectively; there are two sensors to divide the conveying unit 11 into three conveying sections 111, and the three conveying sections 111 correspond to the roller brush unit 12, the spray unit 13 and the drying unit 14 respectively; the operating condition data also includes the motor parameters of the roller brush unit 12, the spray parameters of the spray unit 13 and the purging parameters of the drying unit 14, the preset thresholds include the motor parameter threshold, the spray parameter threshold and the purging parameter threshold, and the deviation data include the motor parameter deviation value compared with the motor parameter threshold, the spray parameter deviation value compared with the spray parameter threshold, and the purging parameter deviation value compared with the purging parameter threshold.

[0053] Specifically, the cleaning module 1 of the present application further includes a roller brush unit 12 , a spray unit 13 and a drying unit 14 , and the roller brush unit 12 , the spray unit 13 and the drying unit 14 correspond to three conveying sections 111 , respectively. In one embodiment, the first controller 2 sends a first control signal to the DC motor of the roller brush unit 12 in the cleaning module and the inverter of the corresponding conveying section 111, respectively, so that the roller brush unit 12 and the conveying section 111 start working, and the brush of the roller brush unit 12 moves to sweep the upper and lower surfaces of the photovoltaic module during the conveying process. When passing the end of the conveying section 111 corresponding to the roller brush unit 12, the first controller 2 controls the solenoid valve of the spray unit 13 to open, and controls the inverter of the conveying section 111 corresponding to the spray unit 13 to operate. During the conveying process, the nozzle of the spray unit 13 sprays a cleaning medium to clean the upper and lower surfaces of the photovoltaic module. When passing the end of the conveying section 111 corresponding to the spray unit 13, the first controller 2 controls the purge solenoid valve of the drying unit 14 to open, and controls the inverter of the conveying section 111 corresponding to the drying unit 14 to operate. During the conveying process, hot air drying and airflow blowing are performed in the drying unit 14, and the photovoltaic module undergoes the processes of the roller brush unit 12, the spray unit 13 and the drying unit 14 respectively under the conveyance of the conveying unit 11.

[0054] In order to ensure the cleaning effect and efficiency of photovoltaic modules, while reducing production costs and saving energy, the detection unit 3 of the present application detects and collects the working condition data of the motor parameters of the roller brush unit 12, the spray parameters of the spray unit 13 and the purge parameters of the drying unit 14. Correspondingly, the preset thresholds of the second controller 4 include the motor parameter threshold, the spray parameter threshold and the purge parameter threshold, and the deviation data include the motor parameter deviation value compared with the motor parameter threshold, the spray parameter deviation value compared with the spray parameter threshold, and the purge parameter deviation value compared with the purge parameter threshold. The second controller 4 obtains the deviation data compared with the preset threshold according to the working condition data, and generates a second control signal to the first controller 2 according to the deviation data to eliminate the deviation in the cleaning process, forming a precise closed-loop control with a feedback loop, so that the cleaning operation of the photovoltaic module is carried out under the preset working conditions with good cleaning efficiency and cleaning effect.

[0055] In some embodiments, the spray parameters include nozzle pressure and cleaning liquid flow rate, the spray parameter threshold includes nozzle pressure threshold and cleaning liquid flow rate threshold, the deviation data includes nozzle pressure deviation value compared with nozzle pressure threshold, cleaning liquid flow rate and cleaning liquid flow rate deviation value compared with cleaning liquid flow rate threshold; the purge parameters include hot air temperature and purge pressure, the purge parameter threshold includes hot air temperature threshold and purge pressure threshold, the deviation data includes hot air temperature deviation value compared with hot air temperature threshold, purge pressure and purge pressure deviation value compared with purge pressure threshold.

[0056] Specifically, in order to ensure the cleaning effect and efficiency of photovoltaic components, while reducing production costs and saving energy, the detection unit 3 of the present application acquires operating condition data of parameter information of nozzle pressure, cleaning liquid flow, hot air temperature and purge pressure, and the deviation data includes a nozzle pressure deviation value compared with the nozzle pressure threshold, a cleaning liquid flow deviation value compared with the cleaning liquid flow threshold, a hot air temperature deviation value compared with the hot air temperature threshold, and a purge pressure deviation value compared with the purge pressure threshold. The second controller 4 sends a second control signal to the first controller 2 according to the above-mentioned acquired deviation data, thereby realizing a feedback loop of system control. The first controller 2 sends a third control signal to the cleaning module 1 according to the second control signal. The cleaning module 1 receives the third control signal and cleans the photovoltaic components with the second parameters to eliminate the deviation occurring during the cleaning process, thereby forming a precise closed-loop control with a feedback loop, so that the cleaning operation of the photovoltaic components is carried out under preset operating conditions with good cleaning efficiency and cleaning effect, thereby realizing energy saving and cost reduction.

[0057] In some embodiments, it also includes: a monitoring unit 6, which is arranged on the conveying unit 11 and connected to the touch display unit 5. The monitoring unit 6 can obtain the real-time position information of the photovoltaic components on the conveying unit 11 and send it to the touch display unit 5 for display and recording.

[0058] Specifically, in order to ensure the accuracy of the cleaning operation of the cleaning module 1 and avoid the system idling when there is no photovoltaic component in the conveying unit 11, affecting the system safety, and at the same time enable the operator to realize real-time monitoring of the conveying cleaning process and statistical reading of subsequent cleaning records through the touch display unit 5 provided in the present application, the present application also provides a monitoring unit 6, which can be a laser radar element, a camera element, etc., which is arranged on both sides or near the conveying unit 11 to obtain the real-time position information of the photovoltaic component on the conveying unit 11 and send it to the touch display unit 5 for display and recording.

[0059] In some embodiments, it also includes: a delay unit 7, which is signal-connected to the second controller 4. The delay unit 7 sends a sixth control signal to the first controller 2 before the second controller 4 sends a second control signal to the first controller 2 based on the deviation data obtained by the second control unit. The first controller 2 generates and sends a seventh control signal to the conveying unit 11 based on the sixth control signal to stop the conveying unit 11.

[0060] Specifically, the present application takes into account that after the second controller 4 processes the working condition data provided by the detection unit 3 and obtains the deviation data according to the working condition data, it takes time to readjust the cleaning module 1, and takes into account that if the conveying unit 11 maintains the original conveying speed that deviates from the preset threshold to transmit the photovoltaic components, it will cause some photovoltaic components to fail to complete the cleaning condition of the cleaning module 1 under the third control signal of the first control unit, thereby affecting the cleaning effect of some photovoltaic components. The present application is provided with a delay unit 7 for the photovoltaic component cleaning system, so that before the second controller 4 sends the second control signal to the first controller 2, the sixth control signal is first sent to the first controller 2, so that the first controller 2 generates and sends the seventh control signal according to the sixth control signal to stop the conveying unit 11, so that the photovoltaic components that are still in the cleaning module 1 after the time range of the delay unit 7 ends can complete the cleaning operation under the cleaning condition in which the deviation is eliminated after the second controller 4 controls, thereby ensuring the cleaning effect. The time range of the delay unit 7 is set to a shorter time, which is set according to actual needs, and can ensure the normal production rhythm of the photovoltaic component cleaning operation.

[0061] In some embodiments, the cleaning module 1 also includes: a waste liquid recovery pipeline 15, the waste liquid recovery pipeline 15 includes a first pipeline 151 and a second pipeline 152, the two ends of the first pipeline 151 are respectively connected to the input end of the spray unit 13 and the input end of the waste liquid recovery device 16, the waste liquid recovery device 16 can process the waste liquid output from the output end of the spray unit 13, and the second pipeline 152 is respectively connected to the output end of the waste liquid recovery device 16 and the input end of the spray unit 13.

[0062] Specifically, for the sake of environmental protection and water resource reuse, the cleaning module 1 of the present application also includes a waste liquid recovery pipeline 15, which includes a first pipeline 151 and a second pipeline 152 to connect the spray unit 13 with the waste liquid recovery device 16 and form a cycle. The waste liquid generated after the spray unit 13 sprays the photovoltaic module flows into the waste liquid recovery device 16 through the first pipeline 151. After the waste liquid is treated in the waste liquid recovery device 16, the treated cleaning medium that meets the cleaning process standards is transported back to the spray unit 13 through the second pipeline 152 for reuse.

[0063] In some embodiments, the cleaning module 1 further includes: a filter unit 17 , the filter unit 17 includes a first filter element 171 and a second filter element 172 , the first filter element 171 is disposed on the second pipeline 152 , and the second filter element 172 is disposed on the liquid supply pipeline 131 connected to the input end of the spray unit 13 .

[0064] Specifically, in order to ensure that both the cleaning medium in the liquid supply pipeline 131 that supplies liquid to the spray unit 13 and the cleaning medium processed by the waste liquid recovery device 16 can meet the requirements for cleaning the photovoltaic components, avoid the occurrence of pollution, and ensure the cleaning effect, the cleaning module 1 of the present application also includes a filter unit 17, and the filter unit 17 includes a first filter element 171 and a second filter element 172. The first filter element 171 is arranged on the second pipeline 152, and the second filter element 172 is arranged on the liquid supply pipeline 131 connected to the input end of the spray unit 13. The first filter element 171 and the second filter element 172 can select filter elements such as basket filters and bag filters. There is no specific limitation. The model and size of the first filter element 171 and the second filter element 172 can match the second pipeline 152 and the liquid supply pipeline 131 respectively.

[0065] In some embodiments, it also includes: an alarm unit 8, which is connected to the second controller 4 by signal. The alarm unit 8 has a preset alarm threshold. If the deviation data is greater than the preset alarm threshold, the alarm unit 8 will alarm.

[0066] Specifically, the present application is also provided with an alarm unit 8, and the alarm unit 8 is provided with a preset alarm threshold. When the deviation data obtained by the second controller 4 based on the working condition data obtained by the detection unit 3 is greater than the preset alarm threshold, it can be judged that an abnormality has occurred in the cleaning operation of the cleaning module 1 of the photovoltaic component cleaning system. For example, when the deviation of the spray pressure in the deviation data is greater than the setting of the spray pressure in the preset alarm threshold, it can be preliminarily judged that an abnormality has occurred in the spraying operation of the spray unit 13, or when the deviation of the hot air temperature in the deviation data is greater than the setting of the hot air temperature in the preset alarm threshold, it can be preliminarily judged that an abnormality has occurred in the drying operation of the drying unit 14. At this time, the alarm unit 8 alarms and notifies the on-site operation and maintenance personnel to take procedural processing measures to ensure the safe and stable production of photovoltaic components.

[0067] So far, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0068] Although some specific embodiments of the present disclosure have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present disclosure. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict.

Claims

1. A photovoltaic module cleaning system, characterized in that: include: A cleaning module (1), the cleaning module (1) being used for cleaning photovoltaic modules; A first controller (2), the first controller (2) being connected to the cleaning module (1) by signal, and capable of sending a first control signal to the cleaning module (1) according to an operating condition signal of an upstream controller, wherein the cleaning module (1) cleans the photovoltaic module according to the first control signal; a detection unit (3), the detection unit (3) being arranged on the cleaning module (1) and being used for detecting operating data of the cleaning module (1) under the first control signal; a second controller (4), the second controller (4) having a preset threshold value, the second controller (4) being signal-connected to the detection unit (3) and the first controller (2), the second controller (4) acquiring deviation data between the operating condition data and the preset threshold value according to the operating condition data, and the second controller (4) sending a second control signal to the first controller (2) according to the deviation data; The first controller (2) generates a third control signal according to the second control signal and sends it to the cleaning module (1), and the cleaning module (1) cleans the photovoltaic component according to the third control signal.

2. The photovoltaic module cleaning system according to claim 1, characterized in that: Also includes: A touch display unit (5), the touch unit being connected to the second controller (4) and the first controller (2) by signals; The touch display unit (5) has at least a first mode and a second mode. In the first mode, the touch display unit (5) displays and records the operating condition data and the deviation data acquired by the second controller (4). In the second mode, the touch display unit (5) can send a fourth control signal that can cover the second control signal to the first controller (2). The first controller (2) generates and sends a fifth control signal to the cleaning module (1) based on the fourth control signal. The cleaning module (1) cleans the photovoltaic module based on the fifth control signal.

3. The photovoltaic module cleaning system according to claim 2, characterized in that: The cleaning module (1) comprises: A conveying unit (11), the conveying unit (11) being connected to the first controller (2) by signal, the conveying unit (11) being provided with at least two sensors spaced apart on an extension path thereof so as to divide the conveying unit (11) into at least three conveying sections (111); The operating condition data includes a conveying speed of each of the conveying sections (111), the preset threshold includes a conveying speed threshold, the deviation data includes a conveying speed deviation value between the conveying speed of each of the conveying sections (111) and the conveying speed threshold, and the second controller (4) sends a second control signal to the first controller (2) according to the conveying speed deviation value.

4. The photovoltaic module cleaning system according to claim 3, characterized in that: The cleaning module (1) further comprises: A rolling brush unit (12), a spray unit (13) and a drying unit (14), wherein the rolling brush unit (12), the spray unit (13) and the drying unit (14) are connected to the first controller (2) by signals and are used for rolling brushing, spray cleaning and blowing drying respectively; There are two sensors to divide the conveying unit (11) into three conveying sections (111), and the three conveying sections (111) correspond to the roller brush unit (12), the spray unit (13) and the drying unit (14) respectively; The operating condition data also includes motor parameters of the roller brush unit (12), spray parameters of the spray unit (13) and purge parameters of the drying unit (14); the preset thresholds include motor parameter thresholds, spray parameter thresholds and purge parameter thresholds; the deviation data includes motor parameter deviation values ​​compared between the motor parameters and the motor parameter thresholds, spray parameter deviation values ​​compared between the spray parameters and the spray parameter thresholds, and purge parameter deviation values ​​compared between the purge parameters and the purge parameter thresholds.

5. The photovoltaic module cleaning system according to claim 4, characterized in that: The spray parameters include nozzle pressure and cleaning liquid flow rate, the spray parameter thresholds include nozzle pressure thresholds and cleaning liquid flow rate thresholds, and the deviation data include nozzle pressure deviation values ​​compared between nozzle pressure and nozzle pressure thresholds, and cleaning liquid flow rate deviation values ​​compared between cleaning liquid flow rate and cleaning liquid flow rate thresholds; The purge parameters include hot air temperature and purge pressure, the purge parameter thresholds include hot air temperature thresholds and purge pressure thresholds, and the deviation data include a hot air temperature deviation value compared with the hot air temperature threshold, and a purge pressure deviation value compared with the purge pressure threshold.

6. The photovoltaic module cleaning system according to claim 5, characterized in that: Also includes: A monitoring unit (6), wherein the monitoring unit (6) is arranged on the conveying unit (11) and connected to the touch display unit (5), and the monitoring unit (6) is capable of acquiring real-time position information of the photovoltaic assembly on the conveying unit (11) and sending the real-time position information to the touch display unit (5) for display and recording.

7. The photovoltaic module cleaning system according to any one of claims 3 to 6, characterized in that: Also includes: A delay unit (7), the delay unit (7) being connected to the second controller (4) by signal, the delay unit (7) sending a sixth control signal to the first controller (2) before the second controller (4) sends a second control signal to the first controller (2) based on the deviation data acquired by the second control unit, and the first controller (2) generating and sending a seventh control signal to the conveying unit (11) based on the sixth control signal to stop the conveying unit (11).

8. The photovoltaic module cleaning system according to claim 4, characterized in that: The cleaning module (1) further comprises: A waste liquid recovery pipeline (15), the waste liquid recovery pipeline (15) comprising a first pipeline (151) and a second pipeline (152), the first pipeline (151) having two ends respectively connected to an input end of the spray unit (13) and an input end of a waste liquid recovery device (16), the waste liquid recovery device (16) being capable of processing waste liquid output from an output end of the spray unit (13), and the second pipeline (152) being respectively connected to the output end of the waste liquid recovery device (16) and the input end of the spray unit (13).

9. The photovoltaic module cleaning system according to claim 8, characterized in that: The cleaning module (1) further comprises: A filter unit (17), the filter unit (17) comprising a first filter element (171) and a second filter element (172), the first filter element (171) being arranged on the second pipeline (152), and the second filter element (172) being arranged on a liquid supply pipeline (131) connected to an input end of the spray unit (13).

10. The photovoltaic module cleaning system according to claim 1, characterized in that: Also includes: An alarm unit (8), the alarm unit (8) being connected to the second controller (4) by signal, the alarm unit (8) having a preset alarm threshold, and the alarm unit (8) giving an alarm if the deviation data is greater than the preset alarm threshold.

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