Snow removal device for a photovoltaic module

Abstract

The utility model relates to photovoltaic module technical field discloses a snow removing device of photovoltaic module. The snow removing device includes photovoltaic module (1), flexible sensor (2), temperature and humidity sensor (3), snow quality identification sensor (4) and snow blower (5), the upper surface of photovoltaic module (1) is covered with hydrophilic film (6), and the flexible sensor (2) is installed in hydrophilic film (6), and temperature and humidity sensor (3) and snow quality identification sensor (4) are installed above the photovoltaic panel (11) of photovoltaic module (1) through support, and the snow removing device is installed on the photovoltaic panel upside through support, and snow quality identification sensor (4) is connected temperature and humidity sensor (3), flexible sensor (2) and snow blower (5) respectively. The utility model can improve the snow removing response speed, and improve the comprehensive energy efficiency of photovoltaic module.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic module technology, and specifically to a snow removal device for photovoltaic modules. Background Technology

[0002] In the power generation process of photovoltaic (PV) module systems, shading on the surface of PV modules has a significant impact on their power output. During winter, when energy demand is more pressing, after snowfall, PV modules are covered by snow, making it difficult for sunlight to penetrate the thick snow layer, thus preventing normal power generation even on sunny days. This severely affects the power generation of PV power plants and extends the safety and stability of PV support structures.

[0003] Currently, in the field of photovoltaic power generation operation and maintenance, manual snow removal is usually used to remove snow from the surface of photovoltaic modules. However, due to the large area of ​​photovoltaic fields and their remote locations, the cost of manual maintenance is high. Utility Model Content

[0004] In view of this, the present invention provides a snow removal device for photovoltaic modules to improve snow removal response speed and improve the overall energy efficiency of photovoltaic modules.

[0005] In a first aspect, the present invention provides a snow removal device for a photovoltaic module, the snow removal device comprising a photovoltaic module (1), a flexible sensor (2), a temperature and humidity sensor (3), a snow quality identification sensor (4), and a snow blower (5). The upper surface of the photovoltaic module (1) is covered with a hydrophilic film (6), the flexible sensor (2) is installed inside the hydrophilic film (6), the temperature and humidity sensor (3) and the snow quality identification sensor (4) are installed above the photovoltaic panel (11) of the photovoltaic module (1) by means of a bracket, and the snow blower (5) is installed on the upper side of the photovoltaic panel (11) by means of a bracket. The snow quality identification sensor (4) is connected to the temperature and humidity sensor (3), the flexible sensor (2) and the snow blower (5) respectively.

[0006] The snow removal device provided by this utility model can detect snow accumulation in a timely manner through flexible sensors, temperature and humidity sensors and snow quality recognition sensors, thereby improving snow removal response time. Combined with a snow blower, it can improve snow removal efficiency.

[0007] In one alternative embodiment, the snow removal device includes a heating device that is connected to a flexible sensor (2), a temperature and humidity sensor (3), and a snow quality identification sensor (4).

[0008] In one alternative embodiment, the heating device is integrated into the photovoltaic panel (11), and the heating device is a heating wire.

[0009] In one alternative embodiment, the hydrophilic membrane (6) is a gradient nanostructured hydrophilic membrane with a contact angle of less than 10°.

[0010] In one alternative embodiment, the heating device is integrated within a hydrophilic membrane (6), and the heating device is a graphene composite heating layer.

[0011] The snow removal device provided by this utility model, by setting up a heating device and combining it with a snow blower, can process snow in different states and improve snow blowing efficiency.

[0012] In one alternative embodiment, the temperature and humidity sensor (3) includes a temperature sensor (31) and a humidity sensor (32), the temperature and humidity sensor (3) is connected to the snow quality identification sensor (4), and the temperature sensor (31) is connected to the snow quality identification sensor (4) and the heating device respectively.

[0013] In one alternative embodiment, the snow removal device further includes a main controller, which is connected to the flexible sensor (2), the temperature and humidity sensor (3), the snow quality identification sensor (4), the snow blower (5), and the heating device.

[0014] In one alternative implementation, the minimum detection limit of the flexible sensor (2) is 0.5 Pa.

[0015] In one alternative embodiment, there are at least two snow blowers (5), and when there are two snow blowers (5), the blowers are respectively installed above adjacent corners of the photovoltaic panel (11).

[0016] In one alternative implementation, the snow blower (5) has a horizontal rotation function with a rotation angle of 0-45°.

[0017] This invention can shorten snow removal response time, improve snow removal efficiency, reduce energy consumption ratio, improve overall energy efficiency, and extend the lifespan of photovoltaic modules. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of a snow removal device for a photovoltaic module according to an embodiment of the present utility model;

[0020] Figure 2 This is a schematic diagram of a snow removal device for a photovoltaic module according to an embodiment of the present utility model;

[0021] Figure 3 This is a schematic flowchart of a photovoltaic module snow removal method according to an embodiment of the present utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Photovoltaic module; 2. Flexible sensor; 3. Temperature and humidity sensor; 4. Snow quality recognition sensor; 5. Snow blower; 6. Hydrophilic film; 11. Photovoltaic panel; 12. Base; 13. Front column; 14. Rear column; 15. Universal joint; 16. Crossbeam; 17. Diagonal beam; 18. Plastic wing nut; 19. Tracking bracket; 31. Temperature sensor; 32. Humidity sensor. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0028] According to an embodiment of this utility model, a snow removal device for photovoltaic modules is provided. Please refer to... Figure 1 , Figure 1This is a schematic diagram of a snow removal device for a photovoltaic module according to an embodiment of the present invention. The snow removal device includes a photovoltaic module (1), a flexible sensor (2), a temperature and humidity sensor (3), a snow quality identification sensor (4), and a snow blower (5).

[0029] The upper surface of the photovoltaic module (1) is covered with a hydrophilic film (6), the flexible sensor (2) is installed inside the hydrophilic film (6), the temperature and humidity sensor (3) and the snow quality identification sensor (4) are installed above the photovoltaic panel through a bracket, and the snow blowing device is installed on the side of the photovoltaic panel (11) of the photovoltaic module (1) through a bracket; the snow quality identification sensor (4) is connected to the temperature and humidity sensor (3), the flexible sensor (2) and the snow blowing machine (5) respectively.

[0030] Furthermore, the photovoltaic module (1) also includes a base (12), a front column (13), a rear column (14), a universal joint (15), a crossbeam (16), a diagonal beam (17), and a plastic wing nut (18).

[0031] Specifically, two front columns (13) and two rear columns (14) are mounted on the ground via bases (12). Adjacent front columns (13) and rear columns (14) are connected by a diagonal beam (17) via a universal joint (15). Two diagonal beams (17) are mounted on the two sets of front columns (13) and rear columns (14). Two crossbeams (16) are installed between the two diagonal beams (17) via plastic wing nuts (18). Photovoltaic panels (11) are mounted on the two crossbeams (16). Understandably, the height and angle of the photovoltaic panels (11) are adjusted by adjusting the height of the front columns (13) and rear columns (14).

[0032] According to an embodiment of this utility model, another embodiment of a snow removal device for photovoltaic modules is provided. Please refer to... Figure 2 , Figure 2 This is a schematic diagram of a snow removal device for a photovoltaic module according to another embodiment of the present invention. The photovoltaic module (1) further includes a base (12) and a tracking bracket (19).

[0033] Specifically, two tracking brackets (19) are mounted on the ground via a base (12), and the photovoltaic panel (11) is fixed by the two tracking brackets (19). Understandably, the height and angle of the photovoltaic panel (11) can be adjusted by adjusting the tracking brackets (19).

[0034] A hydrophilic film (6) is covered on the upper surface of the photovoltaic panel (11), and a flexible sensor (2) is installed inside the hydrophilic film (6). A vertical support is installed on one side of the crossbeam (16) connected to the photovoltaic panel (11) in a direction perpendicular to the ground. At a preset height of the vertical support, a horizontal support is installed in a direction horizontal to the ground. The horizontal support is positioned directly above the photovoltaic panel (11) and is horizontal to the photovoltaic panel (11). A temperature and humidity sensor (3) and a snow quality identification sensor (4) are installed on the horizontal support, with the snow quality identification sensor (4) facing the photovoltaic panel (11). A snow blower (5) is installed on the side of the photovoltaic panel (11) via a support, with the snow blower (5) facing the upper surface of the photovoltaic panel (11).

[0035] Among them, the hydrophilic membrane (6) is a gradient nanostructure hydrophilic membrane, with a micro-nano composite structure of 100-500nm built on the surface and a contact angle of less than 10°.

[0036] In one implementation, the hydrophilic membrane (6) is a three-proof composite membrane layer that can meet the conditions of UV protection (UV380 cutoff rate greater than 99%), corrosion protection (salt spray test greater than 3000h) and freeze crack protection (-60℃ low temperature test).

[0037] Among them, the temperature and humidity sensor (3) is used to detect the ambient temperature and ambient humidity.

[0038] In one implementation, the temperature and humidity sensor (3) is a weather station-level temperature and humidity sensor (3).

[0039] In one implementation, the temperature and humidity sensor (3) includes a temperature sensor (31) and a humidity sensor (32) respectively mounted on a horizontal support, which monitor the ambient temperature and ambient humidity within the photovoltaic field area. The temperature sensor (31) has a detection accuracy of ±0.1℃.

[0040] The snow quality sensor (4) is used to identify the type of snow on the photovoltaic panel (11). The snow quality types include dry snow and wet snow, where dry snow is fresh snow.

[0041] Among them, the snow quality identification sensor (4) is the most mature snow quality identification sensor (4) at present. It is mainly based on the technical principles of optics, microwave, thermodynamics and mechanics, and is widely used in meteorology, transportation, ski resorts and photovoltaic power stations.

[0042] In one implementation, the snow quality identification sensor (4) includes a radar snow quality identification sensor (4), an image snow quality identification sensor (4), an infrared snow quality identification sensor (4), etc.

[0043] Among them, the flexible sensor (2) is used to detect the pressure of snow accumulation on the photovoltaic panel (11).

[0044] In one implementation, the flexible sensor (2) is a high-precision flexible sensor (2) with high sensitivity and a minimum detection limit of 0.5P, which is suitable for detecting minute pressure.

[0045] Among them, the snow blower (5) is used to blow away the snow on the photovoltaic panel (11).

[0046] In one implementation, there are at least two snow blowers (5), and when there are two snow blowers (5), they are respectively installed above adjacent corners of the photovoltaic module (1). Figure 1 As shown, Figure 1 Two snow blowers (5) are set in the middle, and the two snow blowers (5) are horizontally set on one side edge of the photovoltaic module (1).

[0047] In one implementation, the snow blower (5) has a horizontal rotation function with a rotation angle of 0-45°. By using two or more snow blowers (5) in conjunction, the snow on the entire area of ​​the photovoltaic panel (11) can be cleared.

[0048] In this implementation, the temperature and humidity sensor (3) identifies the ambient temperature and humidity and transmits the ambient humidity to the snow quality identification sensor (4). The flexible sensor (2) detects the snow pressure. When the temperature and humidity sensor (3) detects that the ambient temperature is greater than the preset temperature and / or the snow pressure of the flexible sensor (2) is greater than the preset pressure, the snow quality identification sensor (4) is controlled to identify the snow quality type of the snow on the photovoltaic panel (11) in combination with the ambient humidity. When the snow quality type is new snow (dry snow), the snow blower (5) is started to blow away the snow on the photovoltaic panel (11).

[0049] For example, when the temperature and humidity sensor (3) detects that the ambient temperature is higher than the preset temperature, it sends a first control signal to the snow quality identification sensor (4) to control the snow quality identification sensor (4) to identify the snow quality type of the snow on the photovoltaic panel (11) in combination with the ambient humidity. When the snow quality identification sensor (4) identifies the snow as fresh snow (dry snow), it sends a second control signal to the snow blower (5) to start the snow blower (5).

[0050] For example, when the snow pressure of the flexible sensor (2) is greater than the preset pressure, a first control signal is sent to the snow quality identification sensor (4) to control the snow quality identification sensor (4) to identify the snow quality type on the photovoltaic panel (11) in combination with the ambient humidity. When the snow quality identification sensor (4) identifies the snow as fresh snow (dry snow), a second control signal is sent to the snow blower (5) to start the snow blower (5).

[0051] In another implementation, the snow removal device of the photovoltaic module (1) also includes a main controller, which is connected to a flexible sensor (2), a temperature and humidity sensor (3), a snow quality identification sensor, and a snow blower (5).

[0052] The main controller is used to control the flexible sensor (2), temperature and humidity sensor (3), snow quality identification sensor and snow blower (5).

[0053] In this implementation, the temperature and humidity sensor (3) identifies the ambient temperature and humidity and transmits them to the main controller. The flexible sensor (2) detects the snow pressure and transmits it to the main controller. When the main controller detects that the ambient temperature is greater than the preset temperature and / or the snow pressure is greater than the preset pressure, the main controller transmits the ambient humidity to the snow quality identification sensor (4) and controls the snow quality identification sensor (4) to identify the snow quality type on the photovoltaic panel (11) in combination with the ambient humidity and transmits the snow quality type to the main controller. When the main controller detects that the snow quality type is new snow (dry snow), it sends a control command to the snow blower (5) and starts the snow blower (5) to blow away the snow on the photovoltaic panel (11).

[0054] According to an embodiment of the present invention, another embodiment of a snow removal device for a photovoltaic module (1) is provided. The snow removal device for the photovoltaic module (1) includes a photovoltaic module (1), a flexible sensor (2), a temperature and humidity sensor (3), a snow quality identification sensor (4), a snow blower (5), and a heating device.

[0055] The upper surface of the photovoltaic module (1) is covered with a hydrophilic film (6). A flexible sensor (2) is installed inside the hydrophilic film (6). A temperature and humidity sensor (3) and a snow quality identification sensor (4) are installed above the photovoltaic panel (11) via a bracket. A snow blowing device is installed on the upper side of the photovoltaic panel (11) via a bracket. The snow quality identification sensor (4) is connected to the temperature and humidity sensor (3), the flexible sensor (2), and the snow blowing machine (5), respectively. A heating device is connected to the flexible sensor (2), the temperature and humidity sensor (3), and the snow quality identification sensor (4), respectively.

[0056] When the temperature and humidity sensor (3) is divided into a temperature sensor (31) and a humidity sensor (32), the temperature and humidity sensor (3) is connected to the snow quality identification sensor (4), and the temperature sensor (31) is connected to the snow quality identification sensor (4) and the heating device respectively.

[0057] The heating device is used to melt and remove snow from the photovoltaic module (1) by heating. The heating device can be a heating film, heating wire, etc.

[0058] In this implementation, the temperature and humidity sensor (3) identifies the ambient temperature and humidity and transmits the ambient humidity to the snow quality identification sensor (4). The flexible sensor (2) detects the snow pressure. When the temperature and humidity sensor (3) detects that the ambient temperature is less than or equal to the preset temperature and / or the snow pressure of the flexible sensor (2) is less than or equal to the preset pressure, the heating device is controlled to heat the snow on the photovoltaic panel (11). When the temperature and humidity sensor (3) detects that the ambient temperature is greater than the preset temperature and / or the snow pressure of the flexible sensor (2) is greater than the preset pressure, the snow quality identification sensor (4) is controlled to identify the snow quality type of the snow on the photovoltaic panel (11) in combination with the ambient humidity. When the snow quality type is new snow (dry snow), the snow blower (5) is started to blow away the snow on the photovoltaic panel (11). When the snow quality type is not new snow (wet snow), the heating device is controlled to heat the snow on the photovoltaic panel (11).

[0059] In one implementation, the heating device is a heating wire, which is integrated into the photovoltaic module (1).

[0060] In one implementation, the heating device is a graphene composite heating layer, which is integrated within the hydrophilic film (6). The graphene composite heating layer enables uniform heating of the photovoltaic panel (11) with a temperature difference of less than ±2℃.

[0061] In another implementation, the snow removal device of the photovoltaic module (1) also includes a main controller, which is connected to a flexible sensor (2), a temperature and humidity sensor (3), a snow quality identification sensor, a snow blower (5), and a heating device.

[0062] The main controller is used to control the flexible sensor (2), temperature and humidity sensor (3), snow quality identification sensor, snow blower (5) and heating device.

[0063] In this implementation, the temperature and humidity sensor (3) identifies the ambient temperature and humidity and transmits them to the main controller, while the flexible sensor (2) detects the snow pressure and transmits it to the main controller.

[0064] When the main controller detects that the ambient temperature is less than or equal to the preset temperature and / or the snow pressure of the flexible sensor (2) is less than or equal to the preset pressure, the main controller controls the heating device to heat the snow on the photovoltaic panel (11); when the main controller detects that the ambient temperature is greater than the preset temperature and / or the snow pressure is greater than the preset pressure, the main controller transmits the ambient humidity to the snow quality identification sensor (4), controls the snow quality identification sensor (4) to identify the snow quality type of the snow on the photovoltaic panel (11) in combination with the ambient humidity, and transmits the snow quality type to the main controller.

[0065] When the main controller detects that the snow type is fresh snow (dry snow), it sends a control command to the snow blower (5) to start the snow blower (5) to blow away the snow on the photovoltaic panel (11); when the main controller detects that the snow type is not fresh snow (wet snow), it sends a control command to the heating device to control the heating device to heat the snow on the photovoltaic panel (11).

[0066] Furthermore, after the heating device heats the snow, the snow quality identification sensor (4) is used to identify the snow.

[0067] According to an embodiment of the present invention, a method for snow removal of a photovoltaic module (1) is provided, applicable to... Figure 1 or Figure 2 Snow removal device for photovoltaic modules. Please refer to [link / reference]. Figure 3 , Figure 3 This is a schematic flowchart of a photovoltaic module snow removal method according to an embodiment of the present utility model.

[0068] Step a1: Use a weather station-level temperature and humidity sensor (3) to detect the ambient temperature and humidity.

[0069] In one implementation, a weather station-level temperature sensor (31) is used to detect the ambient temperature of the photovoltaic field, and a weather station-level humidity sensor (32) is used to detect the ambient humidity of the photovoltaic field. The ambient humidity is then transmitted to a snow quality identification sensor (4). When the ambient temperature is detected to be greater than a preset temperature, step a3 is executed. When the ambient temperature is detected to be less than or equal to the preset temperature, step a4 is executed.

[0070] In another implementation, the main controller controls the weather station-level temperature and humidity sensor (3) to detect the ambient temperature and humidity of the photovoltaic field and transmits the ambient temperature and humidity to the main controller. The main controller transmits the ambient humidity to the snow quality identification sensor (4). When the main controller detects that the ambient temperature is greater than the preset temperature, step a3 is executed. When the ambient temperature is detected to be less than or equal to the preset temperature, step a4 is executed.

[0071] For example, the preset temperature is 0°.

[0072] Step a2: Use a high-precision flexible sensor (2) to detect the snow pressure on the photovoltaic panel (11).

[0073] In one implementation, a high-precision flexible sensor (2) is used to detect the snow pressure on the photovoltaic panel (11). When the snow pressure is detected to be greater than the preset pressure, step a3 is executed. When the snow pressure is detected to be less than or equal to the preset pressure, step a4 is executed.

[0074] In another implementation, a high-precision flexible sensor (2) is controlled by a main controller to detect the snow pressure on the photovoltaic panel (11) and transmit the snow pressure to the main controller. When the main controller detects that the snow pressure is greater than the preset pressure, step a3 is executed. When the snow pressure is detected to be less than or equal to the preset pressure, step a4 is executed.

[0075] For example, the preset pressure is 0.375 kg / m 2 .

[0076] The method for setting the preset pressure is as follows:

[0077] b1, Determination of snow density.

[0078] Snow density varies depending on the type of snow and environmental conditions, and typically falls within the following ranges:

[0079] The density of fresh snow is 50-100 kg / m³. 3 The density of compacted snow is 200-300 kg / m³. 3 The density of wet snow is 300-500 kg / m³. For ease of calculation, we assume the snow is fresh and take the average density of 75 kg / m³. 3 .

[0080] b2, conversion of snow thickness.

[0081] The snow depth is 0.5cm = 0.005m.

[0082] b3, Pressure calculation formula: P=ρ·g·h.

[0083] Where ρ is the snow density (kg / m³) 3 ),but:

[0084] P=75kg / m3×9.81m / s2×0.005mP=75kg / m3×9.81m / s2×0.005mP=3.68PaP=3.68Pa.

[0085] b4, unit conversion.

[0086] 1Pa=1N / m 2 Therefore: 3.68Pa=3.68N / m2

[0087] Further conversion to kg / m 2 (1kg=9.81N): 3.68N / m2÷9.81N / kg≈0.375kg / m23.68N / m2÷9.81N / kg≈0.375kg / m2.

[0088] b5, Results Analysis

[0089] The pressure exerted by 0.5cm thick fresh snow on the high-precision flexible sensor (2) is approximately 0.375kg / m. 2 .

[0090] If the snow density is higher (e.g., wet snow, density 300 kg / m³), 3 Stress will increase significantly:

[0091] P=300×9.81×0.005≈14.7Pa=1.5kg / m2 P=300×9.81×0.005≈14.7Pa=1.5kg / m2.

[0092] Therefore, for 0.5cm thick fresh snow, the pressure sensor reading is approximately 0.375kg / m. 2 For wet or compacted snow, the pressure can reach 1.5 kg / m³. 2 Or higher.

[0093] Step a3: Use the snow quality identification sensor (4) to detect the snow quality type on the photovoltaic panel (11).

[0094] The snow quality types include fresh snow (dry snow), compacted snow, and wet snow.

[0095] In one implementation, a snow quality identification sensor (4) is used in conjunction with environmental humidity monitoring to detect the snow quality type on the photovoltaic panel (11). When the snow quality type is the preset snow quality type, step a5 is executed, and when the snow quality type is not the preset snow quality type, step a4 is executed.

[0096] In another implementation, the main controller controls the snow quality identification sensor (4) to detect the snow quality type on the photovoltaic panel (11) and transmits the snow quality type to the main controller. When the main controller detects that the snow quality type is the preset snow quality type, step a5 is executed. When the snow quality type is not the preset snow quality type, step a4 is executed.

[0097] For example, the preset snow quality type is fresh snow.

[0098] Step a4: Use a heating device to heat the snow on the photovoltaic panel (11).

[0099] In one implementation, snow on the photovoltaic panel (11) is heated using a heating wire on the photovoltaic panel (11) and / or a graphene composite heating layer on a hydrophilic film (6).

[0100] In another implementation, the snow on the photovoltaic panel (11) is heated by a master controller using heating wires on the photovoltaic panel (11) and / or graphene composite heating layer on the hydrophilic film (6).

[0101] Furthermore, the snow quality identification sensor (4) is controlled by the main controller to perform step a3.

[0102] Step a5: Use a snow blower (5) to blow away the snow on the photovoltaic panel (11).

[0103] In one implementation, a snow blower (5) is used to blow away the snow on the photovoltaic panel (11).

[0104] In another implementation, a snow blower (5) is controlled by a master controller to blow away the snow on the photovoltaic panel (11).

[0105] Specifically, this utility model constructs a snow removal reaction device consisting of a main controller, a weather station temperature and humidity sensor, a high-precision flexible sensor, a snow quality identification sensor, and a heating wire. When the high-precision flexible sensor senses a pressure greater than 0.375 kg / m², the snow quality identifier identifies whether it is fresh snow or dry snow, and the ambient temperature is greater than 0 degrees Celsius. The blower is then turned on to blow the snow. If the pressure does not reach 0.375 kg / m², heating is started. If the ambient temperature is less than 0 degrees Celsius, heating is started, and the system determines whether it is fresh snow. If it is, the snow is blown; otherwise, it is heated, allowing the snow to fall off onto the hydrophilic membrane.

[0106] Furthermore, a three-dimensional model of snow thickness-temperature-time was established, and the heating power (0-800W / m) was dynamically adjusted. 2 The snow blowing angle is intelligently adjustable (0-45° adjustable), and predictive control is introduced. It is pre-started in conjunction with weather forecasts and a power generation threshold is set. Active snow removal is only activated when the working efficiency is >15%.

[0107] The device and its optimized solution, through a three-pronged improvement in material innovation, intelligent control, and structural design, have the following advantages:

[0108] 1. Reduce snow removal response time: Reduce the snow removal response time to 1 / 8 of the traditional solution.

[0109] 2. Improve snow removal efficiency: The average snow removal time is less than 15 minutes, while traditional methods require 2-4 hours.

[0110] 3. Reduced energy consumption ratio: Snow removal energy consumption per square meter is <0.05kWh, while traditional electric heating consumes about 0.3kWh.

[0111] 4. Improves light transmittance retention: After 5 years of use, it still maintains >95% of the initial light transmittance.

[0112] 5. Improved overall energy efficiency: Overall energy efficiency is improved by 60%, and maintenance costs are reduced by 75%. It is particularly suitable for photovoltaic power plants in high-latitude regions and high-altitude areas, and is expected to increase winter power generation by 30-50%.

[0113] 6. Extend the lifespan of photovoltaic modules: Key components are designed to last up to 25 years.

[0114] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A snow-removal device for a photovoltaic assembly, characterized in that, The snow removal device includes a photovoltaic module (1), a flexible sensor (2), a temperature and humidity sensor (3), a snow quality identification sensor (4), and a snow blower (5). The upper surface of the photovoltaic module (1) is covered with a hydrophilic membrane (6). The flexible sensor (2) is installed inside the hydrophilic membrane (6). The temperature and humidity sensor (3) and the snow quality identification sensor (4) are installed above the photovoltaic panel (11) of the photovoltaic module (1) by a bracket. The snow blower (5) is installed on the upper side of the photovoltaic panel (11) by a bracket. The snow quality identification sensor (4) is connected to the temperature and humidity sensor (3), the flexible sensor (2), and the snow blower (5) respectively.

2. The snow-removal device for a photovoltaic assembly according to claim 1, characterized in that, The snow removal device includes a heating device, which is connected to the flexible sensor (2), the temperature and humidity sensor (3), and the snow quality identification sensor (4).

3. The snow-removal device for a photovoltaic assembly according to claim 2, characterized in that, The heating device is integrated into the photovoltaic panel (11), and the heating device is a heating wire.

4. The snow-removal device for a photovoltaic assembly of claim 2, wherein, The hydrophilic membrane (6) is a gradient nanostructured hydrophilic membrane with a contact angle of less than 10°.

5. The snow-removal device for a photovoltaic assembly according to claim 4, characterized in that, The heating device is integrated within the hydrophilic membrane (6), and the heating device is a graphene composite heating layer.

6. The snow-removal device for a photovoltaic assembly of claim 2, wherein, The temperature and humidity sensor (3) includes a temperature sensor (31) and a humidity sensor (32). The temperature and humidity sensor (3) is connected to the snow quality identification sensor (4). The temperature sensor (31) is connected to the snow quality identification sensor (4) and the heating device.

7. Snow removal device for a photovoltaic module according to any of claims 2-6, characterized in that, The snow removal device also includes a main controller, which is connected to the flexible sensor (2), the temperature and humidity sensor (3), the snow quality identification sensor (4), the snow blower (5), and the heating device.

8. The snow-removal device for a photovoltaic assembly of claim 1, wherein, The minimum detection limit of the flexible sensor (2) is 0.5 Pa.

9. The snow-removal device for a photovoltaic assembly of claim 1, wherein, There are at least two snow blowers (5). When there are two snow blowers (5), the snow blowers (5) are respectively installed above the adjacent corners of the photovoltaic panel (11).

10. Snow removal device for a photovoltaic module according to any of claims 1 or 9, characterized in that, The snow blower (5) has a horizontal rotation function with a rotation angle of 0-45°.

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