Photovoltaic panel temperature adjusting and cleaning system based on cross-seasonal energy storage and use method

Abstract

The invention discloses a photovoltaic panel temperature adjusting and cleaning system based on cross-seasonal energy storage and a use method, and belongs to the technical field of photovoltaic power generation. The system comprises a cross-seasonal energy storage and temperature regulation system connected with a solar photovoltaic panel, wherein a snakelike flow channel is arranged on a back plate of the solar photovoltaic panel; the cross-seasonal energy storage and temperature regulation system comprises water storage bodies, an outlet of one water storage body is connected with an inlet of a water inlet pipeline, an outlet of the water inlet pipeline is connected with a water cooling cabinet, the water cooling cabinet is connected with a water inlet of a snakelike flow channel, a water outlet of the snakelike flow channel is connected with an inlet of a water outlet pipeline, and an outlet of the water outlet pipeline is connected with an inlet of the other water storage body. A cleaning system is arranged on the solar photovoltaic panel, and a water inlet of the cleaning system is connected with an outlet of the cleaning water branch of the water outlet pipeline. Through organic combination of photovoltaic panel temperature adjustment, cleaning and cross-seasonal energy storage technologies, energy consumption can be reduced, temperature adjustment and cleaning functions can be comprehensively optimized, and the overall efficiency and stability of a photovoltaic system are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of photovoltaic power generation, and specifically relates to a photovoltaic panel temperature regulation and cleaning system based on cross-seasonal energy storage and a use method thereof. Background Art

[0002] In the application and development of photovoltaic power generation technology, although it has broad prospects as a clean and renewable energy source, the improvement of system efficiency still faces many challenges. These challenges are mainly concentrated in two aspects: operating temperature management and surface cleaning maintenance of photovoltaic panels.

[0003] The operating temperature of photovoltaic panels is a key factor affecting their photoelectric conversion efficiency. The ideal operating temperature range is usually set between 25-35°C. However, the current photovoltaic system has obvious shortcomings in dealing with seasonal temperature changes. When the temperature is high in summer, photovoltaic panels are prone to overheating, resulting in increased electron-hole pair recombination and decreased photoelectric conversion efficiency; while in winter, low temperatures will increase the internal resistance of the components, which is also not conducive to improving power generation efficiency. Although the existing technology can cool down by forced air cooling or water cooling in high temperatures in summer, it lacks an effective adjustment mechanism in low temperature environments in winter, resulting in the inability of photovoltaic panels to maintain the optimal operating temperature, which in turn affects the overall power generation efficiency. The lack of this seasonal adjustment is an important obstacle to improving the efficiency of photovoltaic systems. The existing temperature adjustment methods usually require additional energy consumption to keep the photovoltaic panels in the optimal temperature range, which not only limits the overall efficiency of the photovoltaic power generation system, but also has a negative impact on the long-term operating costs and economic benefits of the system.

[0004] Dust accumulation on the surface of photovoltaic panels is another factor that seriously affects power generation efficiency. Dust and dirt will block direct sunlight, reduce the effective light received by photovoltaic panels, and thus reduce the efficiency of photoelectric conversion. Although there are many cleaning solutions on the market, such as manual cleaning, automatic brushing and spraying systems, these solutions are often operated separately from the temperature control system, which will lead to unnecessary energy consumption due to lack of synergy, and most of them still rely on manual intervention. This separation design and reliance on manual labor not only increases the maintenance cost of the system, but also reduces management efficiency and increases energy consumption, making it difficult to achieve the optimal overall performance of the photovoltaic system.

[0005] Therefore, how to adjust the temperature of photovoltaic panels so that they can operate within the optimal temperature range in different seasons and combine the temperature control system with the cleaning system has become a key issue in improving the overall efficiency of photovoltaic power generation systems and reducing energy consumption. Summary of the invention

[0006] In order to overcome the shortcomings of the above-mentioned prior art, the purpose of the present invention is to provide a photovoltaic panel temperature regulation and cleaning system based on cross-seasonal energy storage and a method of use, which can achieve efficient management and resource optimization, reduce energy consumption, and comprehensively optimize the temperature regulation and cleaning functions of the system to improve the overall efficiency and stability of the photovoltaic system by organically combining photovoltaic panel temperature regulation, cleaning and cross-seasonal energy storage technology.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] The present invention provides a photovoltaic panel temperature regulation and cleaning system based on cross-seasonal energy storage, including a cross-seasonal energy storage temperature regulation system connected to a solar photovoltaic panel, wherein a serpentine flow channel is arranged on the back plate of the solar photovoltaic panel; the cross-seasonal energy storage temperature regulation system includes a water storage body, wherein the outlet of one water storage body is connected to the inlet of a water inlet pipe, wherein the outlet of the water inlet pipe is connected to a water cooling cabinet, wherein the water cooling cabinet is connected to the water inlet of the serpentine flow channel, wherein the water outlet of the serpentine flow channel is connected to the inlet of a water outlet pipe, wherein the outlet of the water outlet pipe is connected to the inlet of another water storage body;

[0009] The solar photovoltaic panel is provided with a cleaning system, and the water inlet of the cleaning system is connected to the outlet of the cleaning water branch of the water outlet pipe.

[0010] In one embodiment, the water storage body includes a hot water storage body and a cold water storage body, the water inlet pipeline includes a heating water inlet branch, a cooling water inlet branch, and a water inlet main pipeline, and the water outlet pipeline includes a water outlet main pipeline, a cleaning water branch, a cold water outlet branch, and a hot water outlet branch;

[0011] The outlet of the hot water storage body is connected to the inlet of the heating water branch, the outlet of the cold water storage body is connected to the inlet of the cooling water branch, the outlet of the heating water branch and the outlet of the cooling water branch are connected to the inlet of the water inlet main pipeline; the outlet of the water inlet main pipeline is connected to the water cooling cabinet;

[0012] The outlet of the main water outlet pipeline is respectively connected to the inlet of the cleaning water branch, the inlet of the cold water branch, and the inlet of the hot water branch; the outlet of the cleaning water branch is connected to the water inlet of the cleaning system; the outlet of the cold water branch is connected to the cold water storage body, and the outlet of the hot water branch is connected to the hot water storage body.

[0013] In one embodiment, a circulating water pump is provided on the main water inlet pipeline.

[0014] In one embodiment, the water inlet of the serpentine flow channel is located at the bottom end of one side of the solar photovoltaic panel, and the water outlet of the serpentine flow channel is diagonally arranged at the top end of the other side of the solar photovoltaic panel.

[0015] In one embodiment, a plurality of temperature measuring points are arranged on the back plate of the solar photovoltaic panel.

[0016] In one embodiment, the water storage body includes a top cover plate, a water body, an anti-seepage layer, a thermal insulation layer and a soil layer;

[0017] An anti-seepage layer and a heat-insulating layer are arranged in sequence on the periphery and bottom of the water body, and a soil layer is arranged below the heat-insulating layer; the top cover plate is arranged on the top of the water body and on the periphery of the heat-insulating layer and the soil layer.

[0018] In one embodiment, it also includes a circulating water utilization system, which includes a circulating water collecting device, a filtering device and a recovery pipe; the circulating water collecting device is arranged at the bottom end of the solar photovoltaic panel, the outlet of the circulating water collecting device is connected to the inlet of the filtering device, the outlet of the filtering device is connected to the inlet of the recovery pipe, and the outlet of the recovery pipe is connected to a circulating water tank.

[0019] In one embodiment, the flow channel of the circulating water collecting device is an inclined flow channel.

[0020] In one embodiment, the cleaning system includes a spray cleaning device, a slide rail, a mechanical cleaning device, and a dust accumulation detection device;

[0021] The spray cleaning device includes a spray pipe and nozzles evenly distributed on the spray pipe; the spray pipe is arranged on the top of the solar photovoltaic panel; the slide rail is arranged on the top and bottom of the solar photovoltaic panel, the mechanical cleaning device is arranged on one side of the solar photovoltaic panel, and the mechanical cleaning device moves along the slide rail; the dust accumulation detection device is arranged on the other side of the solar photovoltaic panel.

[0022] The present invention also provides a method for using the photovoltaic panel temperature regulation and cleaning system based on cross-seasonal energy storage, comprising the following steps: extracting cooling water or heating water from a water storage body, entering a water cooling cabinet through an inlet pipe for temperature regulation, then entering a serpentine flow channel for cooling or heating, and then flowing the cooled hot water or heated cold water into another water storage body through an outlet pipe; when the degree of dust accumulation on the solar photovoltaic panel affects the illumination, the cleaning system uses cooled hot water or heated cold water for cleaning.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The present invention provides a photovoltaic panel temperature regulation and cleaning system based on cross-seasonal energy storage. The system uses a water storage body to store cold water in winter and hot water in summer, realizes cross-seasonal storage and reuse of energy, and significantly reduces the energy consumption of temperature regulation. By adjusting the temperature of cooling / heating water through a water cooling cabinet and combining with the serpentine flow channel on the back of the photovoltaic panel, the temperature of the photovoltaic panel can be accurately controlled to ensure that it works in the optimal temperature range, thereby improving the power generation efficiency. The system can automatically adjust the working mode according to seasonal changes, used for cooling in summer and for heating in winter, which enhances the adaptability and flexibility of the system. The outlet pipe part in the temperature control system is used as a cleaning water branch to realize the recycling of cleaning water, reduce water resource consumption, and improve the environmental protection and economy of the system. The organic combination of the cleaning system and the temperature control system not only improves the power generation efficiency of the photovoltaic panel, but also extends its service life and reduces maintenance costs. In summary, the integration of the cross-seasonal energy storage temperature control system and the cleaning system realizes the dual control of the temperature and cleanliness of the photovoltaic panel. The two work together to significantly improve the overall efficiency of the photovoltaic power generation system. The cross-seasonal energy storage technology reduces dependence on external energy, while the recycling of cleaning water reduces water resource consumption, achieving the goal of energy conservation and emission reduction.

[0025] Furthermore, through the design of the heating water inlet branch, cooling water inlet branch, water outlet main pipeline and cleaning water branch, the system can flexibly switch the working mode according to the season and demand. Each branch has a clear division of labor, and the water outlet main pipeline can distribute cooling water, hot water or cleaning water as needed, which improves the utilization efficiency of water resources. The circulating water pump provides a stable water flow power for the system, ensuring the continuous circulation of cooling / heating water and maintaining the temperature stability of the photovoltaic panel.

[0026] Furthermore, the design of the serpentine flow channel allows the cooling / heating water to be evenly distributed on the back of the photovoltaic panel, improving the uniformity and efficiency of temperature regulation. Reasonable flow channel layout helps reduce the thermal stress caused by temperature differences in the photovoltaic panel and extend its service life.

[0027] Furthermore, by setting temperature measurement points on the back of the photovoltaic panel, its temperature changes can be monitored in real time, providing accurate data for the automatic adjustment of the system. Based on the data from the temperature measurement points, the system can accurately adjust the temperature of the cooling / heating water to keep the photovoltaic panel in the optimal working range.

[0028] Furthermore, the combined design of the top cover, the impermeable layer, the insulation layer and the soil layer effectively prevents the heat loss of the water body and improves the energy storage efficiency. More preferably, materials such as impermeable geomembranes and high-density polystyrene foam boards can be used, which are environmentally friendly and durable, and reduce maintenance costs.

[0029] Furthermore, through the circulating water collection device, filtering device and recycling pipeline, the recycling of cleaning water is realized, reducing water resource consumption, not only reducing dependence on external water sources, but also reducing wastewater discharge.

[0030] Furthermore, the design of the inclined flow channel enables the cleaning water to flow smoothly into the collection device, thereby improving the recovery efficiency. The inclined flow channel has a certain inclination angle, which also helps prevent debris from clogging the flow channel, thereby ensuring the stable operation of the system.

[0031] Furthermore, the integration of the spray cleaning device, mechanical cleaning device and dust detection device realizes the automatic cleaning of photovoltaic panels and reduces manual intervention. The dust detection device can monitor the degree of dust accumulation on the surface of photovoltaic panels in real time, automatically judge and start the cleaning program, and improve the timeliness and effectiveness of cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of a photovoltaic panel temperature regulation and cleaning system based on cross-seasonal energy storage according to the present invention;

[0033] Figure 2 It is a schematic diagram of the serpentine flow channel and temperature measurement points of the solar photovoltaic panel back plate of the present invention;

[0034] Figure 3 It is a side view of the water collection tank of the present invention;

[0035] Figure 4 It is a schematic diagram of the structure of the water storage body of the present invention.

[0036] Among them: 1-solar photovoltaic panel; 2-spray pipe; 3-nozzle; 4-slide rail; 5-mechanical cleaning device; 6-dust detection device; 7-water collection tank; 8-water cooling cabinet; 9-first water pump; 10-circulating water tank; 11-second water pump; 12-first electromagnetic two-way valve; 13-activated carbon filter; 14-first electromagnetic three-way valve; 15-second electromagnetic two-way valve; 16-third electromagnetic two-way valve; 17-heat storage body; 18 -cold water storage body; 19-fourth electromagnetic two-way valve; 20-fifth electromagnetic two-way valve; 21-second electromagnetic three-way valve; 22-third water pump; 23-third electromagnetic three-way valve; 24-water inlet; 25-water outlet; 26-first temperature measuring point; 27-second temperature measuring point; 28-third temperature measuring point; 29-inclined flow channel; 30-top cover plate; 31-water body; 32-anti-seepage layer; 33-insulation layer; 34-soil layer. DETAILED DESCRIPTION

[0037] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0038] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0039] The present invention is further described in detail below in conjunction with the accompanying drawings:

[0040] The present invention provides a photovoltaic panel temperature regulation and cleaning system based on cross-seasonal energy storage and a method of use. The system mainly includes a cross-seasonal energy storage and temperature regulation system connected to a solar photovoltaic panel 1 and a cleaning system arranged on the solar photovoltaic panel 1. A serpentine flow channel is arranged on the back plate of the solar photovoltaic panel 1, and the cross-seasonal energy storage and temperature regulation system includes two water storage bodies, a circulating water pump, a water inlet pipe, a water cooling cabinet 8, and a water outlet pipe; one water storage body is used to store hot water, and the other water storage body is used to store cold water. The outlet of one water storage body is connected to the water inlet pipe, the circulating water pump, i.e., the third water pump 22, is arranged on the water inlet pipe, the outlet of the water inlet pipe is connected to the water cooling cabinet 8, the water cooling cabinet 8 is connected to the water inlet 24 of the serpentine flow channel, the water outlet 25 of the serpentine flow channel is connected to the inlet of the water outlet pipe, and the outlet of the water outlet pipe is connected to the inlet of another water storage body; and the outlet of the cleaning water branch of the water outlet pipe is connected to the water inlet of the cleaning system.

[0041] A method for using the above-mentioned system is also provided, comprising the following steps: cooling water or heating water is extracted from a water storage body, entering the water cooling cabinet 8 through a water inlet pipe for temperature adjustment, and then entering the serpentine flow channel for cooling or heating, and then the cooled hot water or heated cold water flows into another water storage body through a water outlet pipe; when the degree of dust accumulation on the solar photovoltaic panel 1 affects the illumination, the cleaning system uses cooled hot water or heated cold water for cleaning.

[0042] The system achieves efficient management and resource optimization by organically combining photovoltaic panel temperature regulation, cleaning and cross-season energy storage technology. This system not only solves the shortcomings of existing technologies, but also significantly improves the efficiency and operational stability of photovoltaic power generation systems, helps to overcome the limitations of traditional technologies, and comprehensively improves the overall performance and economic benefits of photovoltaic systems.

[0043] Specifically, Figure 1 As shown, in one embodiment, a photovoltaic panel temperature regulation and cleaning system based on cross-seasonal energy storage includes a cleaning system, a circulating water utilization system and a cross-seasonal energy storage temperature regulation system, the cross-seasonal energy storage temperature regulation system includes a hot water storage body 17 and a cold water storage body 18, the water inlet pipe includes a hot water inlet branch, a cooling water inlet branch, a water inlet main pipe, a circulating water pump, i.e., a third water pump 22, the water outlet pipe includes a water outlet main pipe, a cleaning water branch, a cold water outlet branch, and a hot water outlet branch; a serpentine flow channel is arranged on the back panel of the solar photovoltaic panel 1, and a plurality of temperature measuring points are arranged on the back panel, the circulating water utilization system includes a circulating water collection device, a filtering device and a recovery pipe; the cleaning system includes a spray cleaning device, a slide rail 4, a mechanical cleaning device 5 and a dust accumulation detection device 6.

[0044] The outlet of the hot water storage body 17 is connected to the inlet of the heating water branch, the outlet of the cold water storage body 18 is connected to the inlet of the cooling water branch, and the outlets of the heating water branch and the cooling water branch are connected to the inlet of the water inlet main pipeline; the third water pump 22 is arranged on the water inlet main pipeline, and the outlet of the water inlet main pipeline is connected to the water cooling cabinet 8; the water cooling cabinet 8 is connected to the water inlet 24 of the serpentine flow channel, and the water outlet 25 of the serpentine flow channel is connected to the inlet of the water outlet main pipeline, and the outlet of the water outlet main pipeline is respectively connected to the inlet of the cleaning water branch, the inlet of the cold water branch, and the inlet of the hot water branch; the outlet of the cleaning water branch is connected to the water inlet of the cleaning system; the outlet of the cold water branch is connected to the cold water storage body 18, and the outlet of the hot water branch is connected to the hot water storage body 17. The system includes two water storage bodies—the hot water storage body 17 and the cold water storage body 18. The two water storage bodies are used to store hot water in summer and cold water in winter, respectively. The water storage structure includes a top cover plate 30, a water body 31, an impermeable layer 32, an insulation layer 33 and a soil layer 34 to ensure the insulation effect of the water body and prevent leakage. The outlet of the hot water storage body 17 is connected to the water inlet main pipeline through the heating water inlet branch, and the outlet of the cold water storage body 18 is connected to the water inlet main pipeline through the cooling water inlet branch. A third water pump 22 is installed on the water inlet main pipeline to drive the water flow circulation. The outlet end of the water inlet main pipeline is connected to the water cooling cabinet 8, which adjusts the water temperature according to the season and the temperature requirements of the photovoltaic panel, and then sends the cooling water or heating water into the serpentine flow channel set on the back plate of the photovoltaic panel. The water inlet 24 of the serpentine flow channel is located at the bottom end of one side of the photovoltaic panel 1, and the water outlet 25 is diagonally arranged at the top of the other side of the photovoltaic panel 1 to ensure uniform cooling / heating effect. The water outlet main pipeline collects the water outlet of the serpentine flow channel and divides the water through the cleaning water branch, the cold water outlet branch, and the hot water outlet branch respectively. The cleaning water branch is connected to the cleaning system, while the cold water outlet branch and the hot water outlet branch return water to the cold water storage body 18 and the hot water storage body 17 respectively.

[0045] like Figure 2 As shown, the water inlet 24 of the serpentine flow channel is arranged at the bottom of one side of the solar photovoltaic panel 1, and the water outlet 25 is diagonally arranged at the top of the other side of the photovoltaic panel to achieve uniform distribution of water flow on the back of the photovoltaic panel and efficient heat exchange. In addition, in order to accurately monitor the temperature change of the photovoltaic panel, a number of temperature measuring points are evenly arranged on the other diagonal line of the photovoltaic panel, and the temperature measuring points can provide real-time feedback on the temperature status of the photovoltaic panel.

[0046] like Figure 4 As shown, the water storage body includes a top cover plate 30, a water body 31, an anti-seepage layer 32, an insulation layer 33 and a soil layer 34; specifically, the anti-seepage layer 32 and the insulation layer 33 are arranged in sequence on the periphery and bottom of the water body 31, and the soil layer 34 is arranged below the insulation layer 33; the top cover plate 30 is arranged on the top of the water body 31 and on the periphery of the insulation layer 33 and the soil layer 34.

[0047] The circulating water collection device is arranged at the bottom end of the solar photovoltaic panel 1, the outlet of the circulating water collection device is connected to the inlet of the filtering device, the outlet of the filtering device is connected to the inlet of the recovery pipe, and the outlet of the recovery pipe is connected to the circulating water tank 10. Furthermore, the flow channel of the circulating water collection device is an inclined flow channel 29, and the inclination angle of the inclined flow channel 29 is 10°.

[0048] The spray cleaning device includes a spray pipe 2 and nozzles 3 evenly distributed on the spray pipe 2; the spray pipe 2 is arranged on the top of the solar photovoltaic panel 1; the slide rail 4 is arranged on the top and bottom of the solar photovoltaic panel 1, the mechanical cleaning device 5 is arranged on one side of the solar photovoltaic panel 1, and the mechanical cleaning device 5 moves along the slide rail 4; the dust accumulation detection device 6 is arranged on the other side of the solar photovoltaic panel 1.

[0049] The system integrates a spray cleaning device, a slide rail 4, a mechanical cleaning device 5 and a dust accumulation detection device 6. The spray cleaning device includes a spray pipe 2 and nozzles 3 evenly distributed on the spray pipe, and is arranged on the top of the photovoltaic panel 1. When the dust accumulation detection device 6 detects that the dust accumulation on the surface of the photovoltaic panel reaches a certain level, the system will start the spray cleaning device for preliminary cleaning. The mechanical cleaning device 5 moves along the slide rails 4 arranged at the top and bottom of the photovoltaic panel to perform a more in-depth cleaning operation to ensure that the surface of the photovoltaic panel is smooth and improve the light absorption efficiency. The circulating water collection device is arranged at the bottom of the photovoltaic panel 1, and adopts an inclined flow channel 29 design to collect wastewater during the cleaning process at the optimal inclination angle. The collected wastewater is purified by a filtering device, and after removing impurities, it is sent to the circulating water tank 10 through a recovery pipe for storage for the next cleaning.

[0050] In summary, the system integrates the temperature regulation, cleaning and cross-seasonal energy storage of photovoltaic panels. The system achieves efficient energy utilization and operation management by integrating the temperature regulation, cleaning and cross-seasonal energy storage of photovoltaic panels, thereby significantly improving the overall performance, economic benefits and sustainability of the photovoltaic power generation system.

[0051] In another embodiment, a photovoltaic panel temperature regulation and cleaning system based on cross-seasonal energy storage is provided, which is mainly composed of the following key components: a solar photovoltaic panel 1, a spray cleaning device, a mechanical cleaning device 5, a dust accumulation detection device 6, a circulating water tank 10, a circulating water pump, a plurality of water pumps, a plurality of electromagnetic three-way valves, a plurality of electromagnetic two-way valves, a circulating water collection device, i.e., a water collection tank 7, a filtering device, i.e., an activated carbon filter 13, a water cooling cabinet 8, a serpentine flow channel located on the back plate of the solar photovoltaic panel 1, a cold water storage body 18 and a hot water storage body 17, and related pipelines such as Figure 1 shown.

[0052] The solar photovoltaic panel 1 uses a commercially available crystalline silicon photovoltaic cell panel with a size of 1650mm x 992mm and is installed at a certain angle. Figure 2 The serpentine flow channel on the back plate shown in the figure can effectively adjust the temperature of the photovoltaic panel by passing cooling / heating water. In addition, three temperature measuring points are arranged on the back plate of the solar photovoltaic panel 1, namely the first temperature measuring point 26, the second temperature measuring point 27, and the third temperature measuring point 28. T-type thermocouples are used to measure the temperature at the temperature measuring points to monitor the operating temperature of the photovoltaic panel in real time, so as to adjust the operating parameters of the system proposed by the present invention.

[0053] A spray cleaning device is fixed on the top long side of the solar photovoltaic panel 1. The device consists of a spray pipe 2 and nozzles 3 evenly distributed on the spray pipe 2, which are used to evenly spray cleaning water. A mechanical cleaning device 5 is installed on the short side of either side of the solar photovoltaic panel 1. A slide rail 4 is set along the top long side of the solar photovoltaic panel 1. A flexible sponge or roller brush is installed at the bottom of the mechanical cleaning device 5, which can move along the slide rail 4. Limiting devices are set on both sides of the slide rail 4 to prevent the mechanical cleaning device from accidentally falling. A dust accumulation detection device 6 is installed on the other short side of the solar photovoltaic panel 1. The device is equipped with an optical sensor inside, which can monitor the light intensity on the surface of the component in real time, thereby monitoring the degree of dust accumulation on the surface of the photovoltaic panel in real time, and automatically judging and determining the best cleaning time.

[0054] A circulating water collection device is installed on the bottom long side of the solar photovoltaic panel 1. Figure 3 As shown, the device is in the form of a water collection tank 7, which is used to collect the washing water after the photovoltaic panel is washed. The interior of the circulating water collection device has a certain inclination angle, and its internal inclination angle can be 10°, which can recycle the washing water by gravity. The internal flow channel of the water collection tank 7 is as shown in FIG. Figure 3 As shown in the inclined flow channel 29 in the figure. The tail of the circulating water collection device is connected with a water pipe, and the waste water enters the activated carbon filter 13 through the water pipe for filtration treatment. The outlet of the recovery pipe is connected with a circulating water tank 10. The first electromagnetic two-way valve 12 and the second water pump 11 are sequentially arranged along the water flow direction on the recovery pipe, and then the treated cleaning water is transported to the circulating water tank 10 through the second water pump 11.

[0055] The system is also equipped with several electromagnetic two-way valves and electromagnetic three-way valves for switching between different working modes.

[0056] The outlet of the hot water storage body 17 is connected to the inlet of the heating water branch, and a fourth electromagnetic two-way valve 19 is arranged on the heating water branch. The outlet of the cold water storage body 18 is connected to the inlet of the cooling water branch, and a fifth electromagnetic two-way valve 20 is arranged on the cooling water branch. The outlet of the heating water branch and the outlet of the cooling water branch are connected to the inlet of the water inlet main pipeline through a second electromagnetic three-way valve 21; the third water pump 22 is arranged on the water inlet main pipeline, and the outlet of the water inlet main pipeline is connected to the water cooling cabinet 8; the water cooling cabinet 8 is connected to the water inlet of the serpentine flow channel 24. The water outlet 25 of the serpentine flow channel is connected to the inlet of the water outlet main pipeline. The outlet of the water outlet main pipeline is respectively connected to the inlet of the cleaning water branch, the inlet of the cold water branch, and the inlet of the hot water branch through the first electromagnetic three-way valve 14; the outlet of the cleaning water branch is connected to the water inlet of the cleaning system; the outlet of the cold water branch is connected to the cold water storage body 18, and a third electromagnetic two-way valve 16 is arranged on the cold water branch; the outlet of the hot water branch is connected to the hot water storage body 17, and a second electromagnetic two-way valve 15 is arranged on the hot water branch.

[0057] A third electromagnetic three-way valve 23 is arranged on the water inlet main pipeline, and the third electromagnetic three-way valve 23 is also connected to the circulating water tank 10 . A first water pump 9 is arranged between the connecting pipeline between the third electromagnetic three-way valve 23 and the circulating water tank 10 .

[0058] The hot water storage body 17 in the system is used to store hot water obtained by cooling the photovoltaic panels in summer, and the cold water storage body 18 is used to store cold water obtained by heating the photovoltaic panels in winter. Figure 4 As shown, it is composed of a top cover plate 30, a water body 31, an impermeable layer 32, an insulating layer 33 and a soil layer 34. Specifically, the top cover plate 30 is preferably a high-density polystyrene foam board coated with an impermeable geomembrane, the impermeable layer 32 is preferably made of an impermeable geomembrane material, the insulating layer 33 is preferably a ceramic gravel insulating layer or a high-density polystyrene foam board, or both are used together, and the soil layer 34 uses the local soil as a base.

[0059] More specifically, the material of the above-mentioned anti-seepage geomembrane is preferably polyethylene PE, polyvinyl chloride PVC, ethylene / vinyl acetate copolymer EVA, ECB ethylene vinyl acetate modified asphalt blended geomembrane and the like.

[0060] This embodiment demonstrates the operation process and function realization of the system through the operation modes in different seasons.

[0061] Summer operation mode:

[0062] After the system is started, the circulating water pump draws cooling water from the cold water body 18. The cooling water passes through the fifth electromagnetic two-way valve 20, the second electromagnetic three-way valve 21, the third water pump 22 and the third electromagnetic three-way valve 23, and then flows into the serpentine flow channel of the back panel of the solar photovoltaic panel 1 after the temperature is adjusted by the water cooling cabinet 8. At this time, the third electromagnetic two-way valve 16 and the fifth electromagnetic two-way valve 20 are closed. The system monitors the temperature of the back of the photovoltaic panel in real time by the first temperature measuring point 26, the second temperature measuring point 27, and the third temperature measuring point 28. The average value of the three measuring points is taken as the monitoring basis, and the temperature of the cooling water is adjusted to keep the solar photovoltaic panel 1 within the optimal operating temperature range. The cooling water absorbs the heat of the solar photovoltaic panel 1 to generate hot water, which returns to the hot water storage body 17 to be stored for use in winter.

[0063] When cleaning is required, the system will guide part of the water to the spray cleaning device through the first electromagnetic three-way valve 14 to clean the surface of the solar photovoltaic panel 1. The cleaned water will be processed by the filtering device, i.e., the activated carbon filter 13, and then flow back to the circulating water tank 10. After the spraying is completed, the mechanical cleaning device 5 is started, and the flexible sponge or roller brush can physically wipe the surface of the solar photovoltaic panel 1 along the slide rail 4 to ensure thorough cleaning, especially for stains that are difficult to remove. The movement of the sponge or roller brush is controlled by the limit devices on both sides of the slide rail 4 to prevent the device from detaching from the solar photovoltaic panel 1.

[0064] In addition, when the water in the cold water body 18 is insufficient, the circulating water tank 10 mixes the water with the cold water body 18 through the first water pump 9 and the third electromagnetic three-way valve 23 and passes through the water cooling cabinet 8 to cool the solar photovoltaic panel 1.

[0065] Winter operation mode:

[0066] After the system switches to winter mode, the hot water stored in summer is used to heat the solar photovoltaic panel 1. The hot water flows from the hot water storage body 17 through the fourth electromagnetic two-way valve 19, the second electromagnetic three-way valve 21, the third water pump 22 and the third electromagnetic three-way valve 23, and then flows into the backplane serpentine flow channel of the solar photovoltaic panel 1 after the temperature is adjusted by the water cooling cabinet 8, thereby increasing the working temperature of the solar photovoltaic panel 1. At this time, the second electromagnetic two-way valve 15 and the fourth electromagnetic two-way valve 19 are closed. The system monitors the temperature of the back of the photovoltaic panel in real time by the first temperature measuring point 26, the second temperature measuring point 27, and the third temperature measuring point 28. The average value of the three measuring points is taken as the monitoring basis, and the temperature of the heated water is adjusted to keep the solar photovoltaic panel 1 within the optimal working temperature range. After providing heat to the solar photovoltaic panel 1, the heated water is cooled to produce cold water, which returns to the cold water storage body 18 and is stored for summer use.

[0067] In addition, when the water in the hot water storage body 17 is insufficient, the circulating water tank 10 mixes the water with the hot water storage body 17 through the first water pump 9 and the third electromagnetic three-way valve 23 and passes through the water cooling cabinet 8 to heat the solar photovoltaic panel 1.

[0068] The cleaning frequency is lower in winter, but the system uses a dust detection device 6 to obtain the amount of dust accumulation, and can start the cleaning function when the dust accumulation reaches the set value. The system will guide part of the water to the spray cleaning device through the first electromagnetic three-way valve 14 to clean the surface of the solar photovoltaic panel 1. The cleaned water is filtered by the filter device, i.e., the activated carbon filter 13, and then flows back to the circulating water tank 10. After the spray cleaning is completed, the mechanical cleaning device 5 is started to physically wipe the surface of the solar photovoltaic panel 1 along the slide rail 4 to ensure thorough cleaning, especially for stains that are difficult to remove. The movement of the sponge or roller brush is controlled by the limit devices on both sides of the slide rail 4 to prevent the device from detaching from the solar photovoltaic panel 1.

[0069] Automatic cleaning mode in rainy days:

[0070] The system automatically starts the rainy day mode when rainfall is detected. Rainwater flows over the surface of the solar photovoltaic panel 1 and is captured by the circulating water collection device at the bottom. After being processed by the filtering device, i.e., the activated carbon filter 13, the rainwater enters the circulating water tank 10 for storage through the first electromagnetic two-way valve 12 and the second water pump 11. Subsequently, the mechanical cleaning device 5 is started to physically wipe the surface of the solar photovoltaic panel 1 along the slide rail 4 to ensure thorough cleaning, and to remove stubborn stains in combination with the natural flushing of rainwater. The movement of the roller brush or sponge at the bottom of the mechanical cleaning device 5 is controlled by the limit devices on both sides of the slide rail to prevent the device from detaching from the solar photovoltaic panel 1. The mechanical cleaning device 5 moves along the slide rail 4 to mechanically wipe the solar photovoltaic panel 1.

[0071] At the same time, the system monitors the temperature of the solar photovoltaic panel 1. If it is found that the temperature is too low due to rainfall, the system automatically adjusts the temperature of the water cooling cabinet to maintain the normal working state of the photovoltaic panel.

[0072] This embodiment uses cross-seasonal energy storage technology. The system effectively reduces the temperature of photovoltaic panels in summer and keeps photovoltaic panels warm in winter, ensuring that photovoltaic panels are maintained in optimal working conditions throughout the year, thereby improving power generation efficiency. The system significantly reduces the energy consumption required for temperature regulation by storing cold in summer and heat in winter. The recycling of rainwater and washing water reduces the demand for external water sources and reduces water resource consumption. Intelligent control reduces manual intervention, and the automatic adjustment and dynamic management of the system reduce maintenance costs and extend the service life of photovoltaic panels. Through the above implementation case, its efficiency, economy and environmental protection in practical applications are demonstrated, providing an innovative solution for the optimization of photovoltaic power generation systems.

[0073] This system uses cold storage and heat storage technology to regulate the temperature of photovoltaic panels in different seasons. In summer, the photovoltaic panels are effectively cooled by using the cold water stored in winter to reduce the operating temperature of the photovoltaic panels, thereby improving the power generation efficiency. At the same time, the hot water generated during the cooling process is stored for use in winter. In winter, the hot water stored in summer is used to heat the photovoltaic panels to ensure that they are maintained in the best working state in a low-temperature environment, and the resulting cooling water is stored again for use in summer. Through this cyclic energy storage method, the photovoltaic panels are kept in the best working state in different seasons, effectively reducing the performance loss caused by temperature fluctuations.

[0074] In addition, the system improves the environmental protection and economic efficiency of the cleaning function by efficiently managing water resources. The cleaning water is recycled within the system and can be used again after being collected and filtered. Especially on rainy days, the system can automatically start the cleaning function and collect rainwater, significantly reducing dependence on external water sources and improving water resource utilization efficiency. This design is not only suitable for areas with water shortages, but also enhances the environmental protection and sustainability of the system.

[0075] The proposed system is equipped with a real-time monitoring function, which can automatically adjust the frequency and intensity of cooling, heating and cleaning operations according to the temperature and dust accumulation of the photovoltaic panels. This intelligent control ensures that the photovoltaic panels are always in the best working condition, reduces unnecessary cleaning operations, and reduces manual intervention and maintenance costs.

[0076] In summary, the present invention significantly improves the comprehensive efficiency of the photovoltaic power generation system by integrating temperature regulation, cleaning and cross-seasonal energy storage functions. The design of the system not only simplifies maintenance and operation, but also realizes efficient use of water resources and energy, greatly improving the economic benefits and environmental performance of the system.

[0077] The above contents are only for explaining the technical idea of ​​the present invention and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. A photovoltaic panel temperature regulation and cleaning system based on cross-season energy storage, characterized in that: The invention comprises an inter-seasonal energy storage and temperature control system connected to a solar photovoltaic panel (1), wherein a serpentine flow channel is arranged on the back plate of the solar photovoltaic panel (1); the inter-seasonal energy storage and temperature control system comprises a water storage body, wherein the outlet of one water storage body is connected to the inlet of a water inlet pipe, wherein the outlet of the water inlet pipe is connected to a water cooling cabinet (8), wherein the water cooling cabinet (8) is connected to the water inlet (24) of the serpentine flow channel, wherein the water outlet (25) of the serpentine flow channel is connected to the inlet of a water outlet pipe, wherein the outlet of the water outlet pipe is connected to the inlet of another water storage body; The solar photovoltaic panel (1) is provided with a cleaning system, and the water inlet of the cleaning system is connected to the outlet of the cleaning water branch of the water outlet pipe.

2. The photovoltaic panel temperature regulation and cleaning system based on cross-season energy storage according to claim 1 is characterized in that: The water storage body comprises a hot water storage body (17) and a cold water storage body (18); the water inlet pipeline comprises a heating water inlet branch, a cooling water inlet branch, and a water inlet main pipeline; the water outlet pipeline comprises a water outlet main pipeline, a cleaning water branch, a cold water outlet branch, and a hot water outlet branch; The outlet of the hot water storage body (17) is connected to the inlet of the heating water branch, the outlet of the cold water storage body (18) is connected to the inlet of the cooling water branch, the outlet of the heating water branch and the outlet of the cooling water branch are connected to the inlet of the water inlet main pipeline; the outlet of the water inlet main pipeline is connected to the water cooling cabinet (8); The outlet of the main water outlet pipeline is respectively connected to the inlet of the cleaning water branch, the inlet of the cold water branch, and the inlet of the hot water branch; the outlet of the cleaning water branch is connected to the water inlet of the cleaning system; the outlet of the cold water branch is connected to the cold water storage body (18), and the outlet of the hot water branch is connected to the hot water storage body (17).

3. The photovoltaic panel temperature regulation and cleaning system based on cross-seasonal energy storage according to claim 2 is characterized in that: A circulating water pump is arranged on the main water inlet pipeline.

4. The photovoltaic panel temperature regulation and cleaning system based on cross-seasonal energy storage according to claim 1 is characterized in that: The water inlet (24) of the serpentine flow channel is located at the bottom end of one side of the solar photovoltaic panel (1), and the water outlet (25) of the serpentine flow channel is diagonally arranged at the top end of the other side of the solar photovoltaic panel (1).

5. The photovoltaic panel temperature regulation and cleaning system based on cross-season energy storage according to claim 1 is characterized in that: A plurality of temperature measuring points are arranged on the back plate of the solar photovoltaic panel (1).

6. The photovoltaic panel temperature regulation and cleaning system based on cross-season energy storage according to claim 1 is characterized in that: The water storage body comprises a top cover plate (30), a water body (31), an anti-seepage layer (32), a thermal insulation layer (33) and a soil layer (34); An anti-seepage layer (32) and a thermal insulation layer (33) are sequentially arranged on the periphery and bottom of the water body (31), and a soil layer (34) is arranged below the thermal insulation layer (33); the top cover plate (30) is arranged on the top of the water body (31) and on the periphery of the thermal insulation layer (33) and the soil layer (34).

7. The photovoltaic panel temperature regulation and cleaning system based on cross-season energy storage according to claim 1 is characterized in that: It also includes a circulating water utilization system, which includes a circulating water collection device, a filtering device and a recovery pipe; the circulating water collection device is arranged at the bottom end of the solar photovoltaic panel (1), the outlet of the circulating water collection device is connected to the inlet of the filtering device, the outlet of the filtering device is connected to the inlet of the recovery pipe, and the outlet of the recovery pipe is connected to a circulating water tank (10).

8. The photovoltaic panel temperature regulation and cleaning system based on cross-season energy storage according to claim 7 is characterized in that: The flow channel of the circulating water collecting device is an inclined flow channel (29).

9. The photovoltaic panel temperature regulation and cleaning system for storing energy across seasons according to claim 1, characterized in that: The cleaning system comprises a spray cleaning device, a slide rail (4), a mechanical cleaning device (5) and a dust accumulation detection device (6); The spray cleaning device comprises a spray pipe (2) and nozzles (3) evenly distributed on the spray pipe (2); the spray pipe (2) is arranged on the top of the solar photovoltaic panel (1); the slide rail (4) is arranged on the top and bottom of the solar photovoltaic panel (1); the mechanical cleaning device (5) is arranged on one side of the solar photovoltaic panel (1), and the mechanical cleaning device (5) moves along the slide rail (4); and the dust accumulation detection device (6) is arranged on the other side of the solar photovoltaic panel (1).

10. A method for using the photovoltaic panel temperature regulation and cleaning system based on cross-seasonal energy storage according to any one of claims 1 to 9, characterized in that: The following steps are involved: Cooling water or heating water is drawn from a water storage body, enters a water cooling cabinet (8) through a water inlet pipe for temperature adjustment, and then enters a serpentine flow channel for cooling or heating. The cooled hot water or heated cold water then flows into another water storage body through a water outlet pipe. When the dust accumulation on the solar photovoltaic panel (1) affects the illumination, the cleaning system uses the cooled hot water or heated cold water for cleaning.

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