Solar photovoltaic panel with a self-cleaning system for the panel surface

Abstract

The application discloses a solar photovoltaic panel surface self-cleaning system and relates to the technical field of solar photovoltaic panels. The technical problem that the accumulated snow is not removed by using the photovoltaic panel self-heating mode in stages is solved. According to the pressure data parameters, the surface heating temperature of the photovoltaic panel is controlled, the heating temperature reaches the specified value set, the pressure data is compared with the interval data in the combined interval, the corresponding trend factor is extracted, the heating temperature of different spliced panels is changed according to the trend factor, the spliced panels in different pressure states are heated by using different heating temperatures, the accumulated snow is quickly melted, and the overall removal effect of the accumulated snow is improved. When the accumulated snow accumulates to the lowermost spliced panel, the hydraulic rod and the waterproof motor are directly controlled by using the control terminal, and the transmission assembly removes the accumulated snow on the outer surface of the light panel, so that the accumulated snow removal effect of the outer surface of the light panel is improved.

Description

Technical Field

[0001] This invention belongs to the field of solar photovoltaic panel technology, specifically a self-cleaning system for solar photovoltaic panels. Background Technology

[0002] Solar cells, also known as "solar chips" or "photovoltaic cells," are thin photovoltaic semiconductor wafers that generate electricity directly using sunlight.

[0003] Patent application CN113649322A provides a drone cleaning system for photovoltaic panels, including a photovoltaic power station, a power detection device, a control backend, and a drone. The photovoltaic power station, power detection device, control backend, and drone are connected via a communication device. This drone cleaning system for photovoltaic panels comprehensively assesses photovoltaic panels with abnormal power generation, accurately determining whether the abnormal power generation is indeed due to the need for cleaning the panel surface. If the assessment indicates that the abnormal power generation of the photovoltaic panel does indeed require cleaning, the drone cleans the panel surface according to the cleaning instructions sent by the control backend, replacing traditional manual cleaning methods and improving the cleaning efficiency of photovoltaic panels.

[0004] Based on the aforementioned patent, the photovoltaic panels are cleaned using rainwater washing, which saves a significant amount of manpower compared to the original manual cleaning method. However, in severe rainy and snowy weather, it is difficult to clean the snow accumulated on the outer surface of the photovoltaic panels. Using rainwater cleaning can sometimes lead to ice formation on the outer surface of the photovoltaic panels. If a phased temperature heating method is used to heat the surface of the photovoltaic panels, the rain and snow accumulated on the outer surface of the photovoltaic panels can be effectively removed. Summary of the Invention

[0005] The present invention aims to at least solve one of the technical problems existing in the prior art; to this end, the present invention proposes a self-cleaning system for solar photovoltaic panels to solve the technical problem of not using a phased heating method for the photovoltaic panels to remove snow.

[0006] To achieve the above objectives, an embodiment of the first aspect of the present invention provides a self-cleaning system for solar photovoltaic panels, comprising a preset parameter input terminal, a pressure data acquisition terminal, and a processing center; The processing center includes a preset parameter processing unit, a storage unit, a pressure data processing unit, a threshold unit, and a total control parameter processing unit; The preset parameter input terminal is used to input preset parameters and transmit the input preset parameters to the processing center. The preset parameters include panel pressure parameters and heating temperature parameters. The preset parameter processing unit merges the panel pressure parameters and heating temperature parameters at different stages, combines the pressure parameters belonging to the same trend factor, and transmits the combined range to the storage unit for storage. The pressure data acquisition end is used to acquire pressure data on the surface of the photovoltaic panel and transmit the acquired pressure data to the pressure data processing unit. The photovoltaic panel is composed of multiple splicing panels. The pressure data processing unit is used to process the received pressure data, compare different pressure data with the thresholds set in the threshold unit in turn, generate control signals based on the comparison results, and transmit the control signals to the control terminal. The processed pressure data is converted into data to be processed, and the data to be processed is transmitted to the overall control parameter processing unit. The overall control parameter processing unit will acquire the data to be processed, and adjust the heating temperature of different splicing panels to different degrees according to the different data to be processed. The adjusted heating temperature parameters will be transmitted to the control terminal, and the control terminal will perform different temperature heating treatments on different splicing panels according to the heating temperature parameters.

[0007] Preferably, each of the multiple sets of splicing panels is provided with a corresponding panel mark, which is represented by the number j. Different panels correspond to different panel marks j, and the bottommost panel mark j contains the number 0, while the panel marks j that are not at the bottommost level do not contain the number 0. The acquired pressure data is marked as YL. j .

[0008] Preferably, the preset parameter processing unit performs the combined processing of panel pressure parameters and heating temperature parameters at different stages in the following manner: Label the panel pressure parameter as YL i The heating temperature parameter is marked as WD. i , where i represents the parameters for different stages; use Multiple sets of different trend factors K were obtained. i Those belonging to the same trend factor K i The panel pressure parameters are merged into a combined range, and the corresponding trend factor K is used. i It is merged with the combined interval and transferred to the storage unit for storage.

[0009] Preferably, the pressure data processing unit processes the received pressure data YL j The specific method for processing is as follows: When YL j When Y1 is greater than or equal to Y1, a control signal is directly generated, and this pressure data YL is simultaneously transmitted. j Set as data to be processed YLj Y1 is the built-in threshold of the threshold unit. The control signal is transmitted to the control terminal. The control terminal heats the heating wire set on the photovoltaic panel according to the received control signal. The heating temperature is set to a specified value, which is set by external personnel. When YL j When Y < Y1, no signal is generated.

[0010] Preferably, the overall control parameter processing unit processes the data YL to be processed. j The specific method for changing the heating temperature of different splicing panels is as follows: Data to be processed YL j The data YL to be processed is obtained by comparing it with the combined range stored inside the storage unit. j Trend factor K of the corresponding combination interval i ; Using YL j ×K i =JR j The heating temperature JR is obtained j and heating temperature JR j The data is transmitted to the control terminal, which adjusts the temperature of the specified splicing panel according to the marker j, thereby adjusting the heating temperature set to the specified value to JR. j ; Data to be processed YL j The internal panel mark j is extracted, and it is detected whether the digit 0 exists in panel mark j. If the corresponding digit 0 exists, a cleanup signal is generated and transmitted to the control terminal. If the corresponding digit 0 does not exist, no signal is generated.

[0011] Preferably, the system also includes a waterproof motor and a hydraulic rod. When the control terminal receives the corresponding cleaning signal, it controls the hydraulic rod and the waterproof motor to make them work. At the same time, it compares the interval duration of the cleaning signals. When the interval duration of the received cleaning signals is less than or equal to seconds, it continuously controls the hydraulic rod and the waterproof motor. When the interval duration of the received cleaning signals is greater than seconds, it resets the hydraulic rod and stops controlling the waterproof motor.

[0012] Preferably, it also includes a base plate, with side blocks provided at the two corners of the upper end of the base plate, and a smooth plate being driven between the two sets of side blocks. The waterproof motor is located at the middle of one side edge of the lower end of the smooth plate, and a transmission gear column is provided at the output end of the waterproof motor. A front sliding groove is provided at the front end of the smooth plate, and front sliders are slidably provided on both sides inside the front sliding groove. A scraping inclined plate is provided at the outer end of the front slider, and a number of cleaning filaments are provided on the lower end surface of the scraping inclined plate. The cleaning filaments are used to clean the snow accumulated on the outer surface of the smooth plate. Each of the two adjacent sets of front sliders has a defined side plate staggered on its opposite side, and each of the two adjacent sets of defined side plates has a meshing tooth pattern on its opposite side. The transmission gear column is meshed with the defined side plate through the meshing tooth pattern. The hydraulic rod is located at the middle of the lower end of the light plate, and the hydraulic rod is used to change the angle of the light plate.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: Trend factors corresponding to different panel pressure parameters are determined in advance according to preset parameters, and the trend factors and combination intervals are stored. Subsequently, pressure data on the surface of the photovoltaic panel is acquired through a pressure data acquisition terminal. Based on the parameters of the pressure data, the surface heating temperature of the photovoltaic panel is controlled to reach the set specified value. The pressure data of different splicing panels is then reprocessed, comparing the pressure data with the interval data within the combination interval, and extracting the corresponding trend factors. Based on the trend factors, the heating temperature of different splicing panels is changed, and different heating temperatures are used for splicing panels under different pressure states to quickly melt the snow and improve the overall snow removal effect. When the snow accumulates to the bottom layer of the splicing panel, the hydraulic rod and waterproof motor are directly controlled through the control terminal, driving the internal transmission mechanism to move. The transmission component then removes the snow from the outer surface of the photovoltaic panel, thereby improving the overall snow removal effect on the outer surface of the entire photovoltaic panel. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the principle framework of the present invention; Figure 2 This is a schematic diagram of the overall structure of the present invention; Figure 3 For the present invention Figure 2 Enlarged view of the internal structure of region A in the middle; Figure 4 This is a plan view of the internal structure of the light plate of the present invention; Figure 5 This is a plan view of the overall structure of the present invention; Reference numerals: 1. Base plate; 2. Plain plate; 3. Side block; 4. Waterproof motor; 41. Transmission gear column; 5. Front slide groove; 51. Front slider; 511. Limiting side plate; 52. Scraping slant plate; 53. Cleaning wire; 6. Hydraulic rod. Detailed Implementation

[0015] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0016] Please see Figure 1 This application provides a self-cleaning system for solar photovoltaic panels, including a preset parameter input terminal, a pressure data acquisition terminal, a processing center, and a control terminal; The preset parameter input terminal and the pressure data acquisition output terminal shown are both electrically connected to the processing center input terminal, and the processing center output terminal is electrically connected to the control terminal input terminal. The processing center includes a preset parameter processing unit, the output of which is electrically connected to the input of a storage unit, the storage unit is bidirectionally connected to the overall control parameter processing unit, the pressure data processing unit is bidirectionally connected to the threshold unit, and the output of the pressure data processing unit is electrically connected to the input of the overall control parameter processing unit. The preset parameter input terminal is used to input preset parameters and transmit the input preset parameters to the processing center. The preset parameters include panel pressure parameters and heating temperature parameters. The panel pressure parameters can be understood as the gravity parameters of snow accumulation on the surface of the photovoltaic panel, and the heating temperature parameters are the heating parameters of the outer surface of the panel. Each set of pressure parameters corresponds to a set of heating temperature parameters, and the panel pressure parameters and heating temperature parameters are related. The preset parameter processing unit merges the panel pressure parameters and heating temperature parameters at different stages, combines pressure parameters belonging to the same trend factor, and transmits the combined range to the storage unit for storage. The specific method of merging is as follows: Label the panel pressure parameter as YL i The heating temperature parameter is marked as WD. i , where i represents the parameters for different stages; use Multiple sets of different trend factors K were obtained. i Those belonging to the same trend factor K i The panel pressure parameters are merged into a combined range, and the corresponding trend factor K is used. iIt is merged with the combined interval and transferred to the storage unit for storage.

[0017] The pressure data acquisition terminal is used to acquire pressure data from the surface of the photovoltaic panel and transmit the acquired pressure data to the pressure data processing unit. The photovoltaic panel is composed of multiple sets of spliced ​​panels. Each set of spliced ​​panels is equipped with a corresponding pressure sensor to acquire pressure data. Each set of spliced ​​panels is equipped with a corresponding panel mark, represented as j. Different panels correspond to different panel marks j, and the bottommost panel mark j contains the number 0. Panel marks j that are not at the bottommost level do not contain the number 0. The acquired pressure data is marked as YL. j ; The pressure data processing unit is used to process the received pressure data YL j Processing is performed, sequentially converting different pressure data YL j The comparison is performed with the threshold value set within the threshold unit. A control signal is generated based on the comparison result and transmitted to the control terminal. The specific method of comparison is as follows: When YL j When Y1 is greater than or equal to Y1, a control signal is directly generated, and this pressure data YL is simultaneously transmitted. j Set as data to be processed YL j Y1 is the built-in threshold of the threshold unit. The control signal is transmitted to the control terminal. The control terminal heats the heating wires on the photovoltaic panel according to the received control signal. The heating temperature is set to a specified value, which is set by external personnel. If the pressure data of one group of photovoltaic panels exceeds Y1, the heating temperature of all photovoltaic panels is adjusted to the specified value to heat the snow accumulated on the surface of the photovoltaic panels. However, some photovoltaic panels may not have snow on their surface. These photovoltaic panels also need to be heated to the specified value to prevent snow accumulation. When YL j When Y < Y1, no signal is generated.

[0018] The overall control parameter processing unit will acquire the data YL to be processed. j According to the data YL to be processed j Depending on the differences, the heating temperature of different splicing panels is adjusted to varying degrees until the corresponding splicing panel's data YL to be processed is reached. j If the temperature drops below the internal threshold Y1, the corresponding heating temperature will be changed to a specified value. The specific methods by which the overall control parameter processing unit changes the heating temperature to different degrees are as follows: Data to be processed YL j The data YL to be processed is obtained by comparing it with the combined range stored inside the storage unit. jTrend factor K of the corresponding combination interval i ; Using YL j ×K i =JR j The heating temperature JR is obtained j and heating temperature JR j The data is transmitted to the control terminal, which adjusts the temperature of the specified splicing panel according to the marker j, thereby adjusting the heating temperature set to the specified value to JR. j (Adjust heating temperature to JR) j Then, the snow on the surface of the photovoltaic panel can be fully melted, and the snow will slide off onto the bottom panel or directly onto the ground. Data to be processed YL j The internal panel mark j is extracted, and it is detected whether the digit 0 exists in panel mark j. If the corresponding digit 0 exists, a cleanup signal is generated and transmitted to the control terminal. If the corresponding digit 0 does not exist, no signal is generated.

[0019] When the control terminal receives the corresponding cleaning signal, it controls the hydraulic rod 6 and the waterproof motor 4 to make them work. It compares the interval duration of the cleaning signal. When the interval duration of the received cleaning signal is less than or equal to 5 seconds, it continuously controls the hydraulic rod 6 and the waterproof motor 4. When the interval duration of the received cleaning signal is greater than 5 seconds, it resets the hydraulic rod 6 and stops controlling the waterproof motor 4.

[0020] Please see Figure 2 It also includes a base plate 1, with side blocks 3 at the upper corners of the base plate 1, and a light plate 2 driven between the two sets of side blocks 3. A waterproof motor 4 is installed at the lower middle of the light plate 2, and a transmission gear column 41 is installed at the output end of the waterproof motor 4. A front sliding groove 5 is opened at the front end of the light plate 2, and front sliders 51 are slidably installed on both sides inside the front sliding groove 5. A scraping inclined plate 52 is installed at the outer end of the front slider 51, and several cleaning wires 53 are installed on the lower end surface of the scraping inclined plate 52. Please see Figure 3 as well as Figure 4 Each of the two adjacent sets of front sliders 51 has a defined side plate 511 staggered on its opposite side, and each of the two adjacent sets of defined side plates 511 has a meshing tooth pattern on its opposite side. The transmission gear column 41 is meshed with the defined side plate 511 through the meshing tooth pattern. Specifically, as one embodiment of the present invention, when the circuit switch of the waterproof motor 4 is turned on, the transmission gear column 41 is driven to rotate. Since the transmission gear column 41 is meshed with the limiting side plate 511, the transmission gear column 41 drives the two adjacent limiting side plates 511 to move closer together during the rotation. During the movement, the scraping inclined plate 52 moves on the upper surface of the smooth plate 2, and the cleaning wire 53 cleans the snow accumulated on the upper surface of the smooth plate 2. Please see Figure 5 A hydraulic rod 6 is provided between the lower middle part of the light plate 2 and the base plate 1; Specifically, as one embodiment of the present invention, after the hydraulic rod 6 is switched on, it begins to extend and retract. At the same time, through the sliding action of the corresponding adapter slider and the adapter groove, the light plate 2 is driven to rotate. When the light plate 2 rotates, it facilitates the snow to slide off, thereby improving the overall snow removal effect.

[0021] The data in the above formula are all calculated by removing the dimensions and taking the numerical values. The formula is the closest to the real situation obtained by software simulation of a large amount of collected data. The preset parameters and preset thresholds in the formula are set by those skilled in the art according to the actual situation or obtained through simulation of a large amount of data.

[0022] The working principle of this invention is as follows: Trend factors corresponding to different panel pressure parameters are pre-determined based on preset parameters, and the trend factors and combination intervals are stored. Subsequently, pressure data on the surface of the photovoltaic panel is acquired via a pressure data acquisition terminal. Based on the parameters of the pressure data, the surface heating temperature of the photovoltaic panel is controlled to reach the set specified value. The pressure data of different splicing panels is then further processed, comparing the pressure data with the interval data within the combination interval, and extracting the corresponding trend factors. Based on the trend factors, the heating temperature of different splicing panels is changed, using different heating temperatures for splicing panels under different pressure states to quickly melt the snow and improve the overall snow removal effect. When the snow accumulates to the bottom layer of the splicing panel, the hydraulic rod 6 and waterproof motor 4 are directly controlled via the control terminal, driving the internal transmission mechanism to remove the snow from the outer surface of the photovoltaic panel 2, thereby improving the overall snow removal effect on the outer surface of the photovoltaic panel 2.

[0023] The above embodiments are only used to illustrate the technical methods of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical methods of the present invention without departing from the spirit and scope of the technical methods of the present invention.

Claims

1. A self-cleaning system for solar photovoltaic panels, characterized in that, This includes a preset parameter input terminal, a pressure data acquisition terminal, and a processing center; The processing center includes a preset parameter processing unit, a storage unit, a pressure data processing unit, a threshold unit, and a total control parameter processing unit; The preset parameter input terminal is used to input preset parameters and transmit the input preset parameters to the processing center. The preset parameters include panel pressure parameters and heating temperature parameters. The preset parameter processing unit merges the panel pressure parameters and heating temperature parameters at different stages, combines the pressure parameters belonging to the same trend factor, and transmits the combined range to the storage unit for storage. The pressure data acquisition end is used to acquire pressure data on the surface of the photovoltaic panel and transmit the acquired pressure data to the pressure data processing unit. The photovoltaic panel is composed of multiple splicing panels. The pressure data processing unit is used to process the received pressure data, compare different pressure data with the thresholds set in the threshold unit in turn, generate control signals based on the comparison results, and transmit the control signals to the control terminal. The processed pressure data is converted into data to be processed, and the data to be processed is transmitted to the overall control parameter processing unit. The overall control parameter processing unit acquires the data to be processed, and adjusts the heating temperature of different splicing panels to varying degrees according to the different data. The adjusted heating temperature parameters are then transmitted to the control terminal. The control terminal applies different heating treatments to the different splicing panels based on these parameters. Specifically: Data to be processed YL j The data YL to be processed is obtained by comparing it with the combined range stored inside the storage unit. j Trend factor K of the corresponding combination interval i ; Using YL j ×K i =JR j The heating temperature JR is obtained j and heating temperature JR j The data is transmitted to the control terminal, which adjusts the temperature of the specified splicing panel according to the marker j, thereby adjusting the heating temperature set to the specified value to JR. j ; Data to be processed YL j The internal panel mark j is extracted, and it is detected whether the digit 0 exists in panel mark j. If the corresponding digit 0 exists, a cleanup signal is generated and transmitted to the control terminal. If the corresponding digit 0 does not exist, no signal is generated.

2. The self-cleaning system for solar photovoltaic panels according to claim 1, characterized in that, Each of the multiple sets of splicing panels is equipped with a corresponding panel mark, which is represented by the number j. Different panels correspond to different panel marks j. The bottommost panel mark j contains the number 0, while panel marks j that are not at the bottommost level do not contain the number 0. The acquired pressure data is marked as YL. j .

3. The self-cleaning system for solar photovoltaic panels according to claim 2, characterized in that, The preset parameter processing unit processes the panel pressure parameters and heating temperature parameters at different stages in the following way: Label the panel pressure parameter as YL i The heating temperature parameter is marked as WD. i , where i represents the parameters for different stages; use Multiple sets of different trend factors K were obtained. i Those belonging to the same trend factor K i The panel pressure parameters are merged into a combined range, and the corresponding trend factor K is used. i It is merged with the combined interval and transferred to the storage unit for storage.

4. The self-cleaning system for solar photovoltaic panels according to claim 3, characterized in that, The pressure data processing unit processes the received pressure data YL. j The specific method for processing is as follows: When YL j When Y1 is greater than or equal to Y1, a control signal is directly generated, and this pressure data YL is simultaneously transmitted. j Set as data to be processed YL j Y1 is the built-in threshold of the threshold unit. The control signal is transmitted to the control terminal. The control terminal heats the heating wire set on the photovoltaic panel according to the received control signal. The heating temperature is set to a specified value, which is set by external personnel. When YL j When Y < Y1, no signal is generated.

5. The self-cleaning system for solar photovoltaic panels according to claim 4, characterized in that, It also includes a waterproof motor and a hydraulic rod. When the control terminal receives the corresponding cleaning signal, it controls the hydraulic rod and the waterproof motor to make them work. At the same time, it compares the interval duration of the cleaning signal. When the interval duration of the received cleaning signal is less than or equal to seconds, it continuously controls the hydraulic rod and the waterproof motor. When the interval duration of the received cleaning signal is greater than seconds, it resets the hydraulic rod and stops controlling the waterproof motor.

6. The self-cleaning system for solar photovoltaic panels according to claim 5, characterized in that, It also includes a base plate, with side blocks at the upper corners of the base plate. A smooth plate is driven between the two sets of side blocks. The waterproof motor is located at the middle of one side edge of the lower end of the smooth plate. A transmission gear column is provided at the output end of the waterproof motor. A front sliding groove is provided at the front end of the smooth plate. Front sliders are slidably arranged on both sides inside the front sliding groove. A scraping inclined plate is provided at the outer end of the front slider. Several cleaning wires are provided on the lower end surface of the scraping inclined plate. The cleaning wires are used to clean the snow on the outer surface of the smooth plate. Each of the two adjacent sets of front sliders has a defined side plate staggered on its opposite side, and each of the two adjacent sets of defined side plates has a meshing tooth pattern on its opposite side. The transmission gear column is meshed with the defined side plate through the meshing tooth pattern. The hydraulic rod is located at the middle of the lower end of the light plate, and the hydraulic rod is used to change the angle of the light plate.

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