Water-free cleaning system for photovoltaic panel and use method of water-free cleaning system

Abstract

The invention discloses a photovoltaic panel waterless cleaning system and a using method. The photovoltaic panel waterless cleaning system comprises a photovoltaic panel body, a transparent conductive film, a vibration assembly and a draught fan. The transparent conductive film is arranged on the surface of the photovoltaic panel body, and the edge of the transparent conductive film is provided with an electrode assembly; the electrode assembly is connected with a direct-current power supply assembly; the vibration assembly is arranged on the photovoltaic panel body, the draught fan is arranged close to the photovoltaic panel body, the cleaning system systematically solves the core pain points of water consumption, low efficiency, high cost and secondary pollution in a traditional cleaning technology through the multi-mode cooperative technology of electrostatic adsorption, vibration stripping and negative pressure collection and the intelligent adjustment design, and the cleaning effect is good. The system adopts a technical framework with no water, low energy consumption and long service life, and provides an efficient and reliable cleaning solution for an arid region and a distributed photovoltaic system.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of photovoltaic operation and maintenance, and relates to a photovoltaic panel waterless cleaning system and a use method. BACKGROUND

[0002] Under the drive of global energy transformation and the "double carbon" target, photovoltaic power generation has become one of the fastest growing renewable energy sources. As of 2023, the global installed capacity of photovoltaic power has exceeded 1.2 TW. Among them, the desert, Gobi and other arid regions have become the focus of large-scale photovoltaic power station construction due to the rich light resources. However, photovoltaic power stations in arid regions face a core contradiction: the environmental characteristics of high light intensity and low air humidity, which not only guarantee the power generation efficiency, but also exacerbate the accumulation of dirt on the surface of photovoltaic panels. Traditional cleaning technologies are difficult to adapt to the special needs of these regions due to water consumption, low efficiency or high cost.

[0003] The dirt problem of photovoltaic power stations directly affects the power generation efficiency and investment return. Studies have shown that when the surface of the photovoltaic panel is covered with 5% dirt, the power generation loss can reach 10%-15%; if it is not cleaned for a long time, the adhesion of dirt will grow exponentially with time, eventually leading to hot spot effect or glass surface corrosion, shortening the service life of photovoltaic panels. Therefore, cleaning technology is a key link in the operation and maintenance of photovoltaic power stations, and is directly related to the competitiveness of the power generation cost.

[0004] The cleaning of photovoltaic power stations in arid regions faces the dual challenges of "no water available" and "high-efficiency cleaning". These regions have an annual precipitation of <200 mm, and the cost of underground water is high, while traditional cleaning technologies are highly dependent on water resources, leading to a sharp increase in operation and maintenance costs. For example, traditional water washing method consumes a large amount of clean water, 10-20 tons per MW of power station per year, and the water stains left after cleaning will form a vicious cycle of "dirt-water stains-dust", and after the evaporation of water stains, dust is more likely to adhere; dry brushing (such as brushes and rollers) does not require water, but the hard bristles can scratch the glass surface of the photovoltaic panel, causing a decrease in light transmittance and accelerating the adhesion of dirt; high-pressure air flow cleaning (such as compressed air) blows away dirt through high-speed air flow, but the energy consumption is extremely high (>100 kWh / MW per cleaning), and air flow disturbance can cause secondary dust pollution (PM2.5 concentration increases by 3-5 times), which in turn aggravates dirt accumulation; self-cleaning coating (such as super-hydrophobic coating) can reduce dirt adhesion through "lotus effect", but its service life is short (<2 years due to UV aging), and the photocatalytic material (such as TiO2) needs to be excited by UV light to decompose organic dirt, which in turn accelerates the failure of the coating in desert areas (UV intensity >800 W / m 2 ), and the preparation cost of photocatalytic material is high (such as coating with noble metal doping >50 dollars / m 2 ), making it difficult to be applied on a large scale.

[0005] In summary, the existing cleaning technology has the contradiction of "water consumption-low efficiency-high cost-secondary pollution", which cannot meet the cleaning demand of water-free, high efficiency, long service life and low cost of photovoltaic power station in arid areas. This technical bottleneck not only limits the promotion of photovoltaic power generation in water-deficient areas, but also aggravates the imbalance of global energy transformation. Therefore, developing a water-free, intelligent, low-energy-consumption and long-service-life photovoltaic panel cleaning technology has become a key breakthrough for the development of photovoltaic industry in arid areas. SUMMARY

[0006] In view of the problems in the prior art, the present application provides a water-free photovoltaic panel cleaning system and a use method, thereby solving the technical problems of water consumption, low efficiency, high cost and secondary pollution existing in the prior art cleaning technology.

[0007] The present application is realized by the following technical solutions: A water-free photovoltaic panel cleaning system, comprising a photovoltaic panel body, a transparent conductive film, a vibration assembly and a fan. The transparent conductive film is arranged on the surface of the photovoltaic panel body, and the edge of the transparent conductive film is provided with an electrode assembly; a direct current power supply assembly is connected to the electrode assembly. The vibration assembly is arranged on the photovoltaic panel body, and the fan is arranged close to the photovoltaic panel body.

[0008] Preferably, the electrode assembly comprises a plurality of electrodes arranged at intervals, and the plurality of electrodes are connected to the direct current power supply assembly.

[0009] Preferably, the plurality of electrodes are alternately connected to the direct current power supply assembly to form positive and negative alternating electrodes.

[0010] Preferably, the electrode is a strip electrode, and the width of the strip electrode is 1-2 mm.

[0011] Preferably, the interval distance between the plurality of electrodes is 3-7 cm.

[0012] Preferably, the water-free photovoltaic panel cleaning system further comprises an image acquisition assembly and a control unit arranged in communication, and the control unit is connected to the vibration assembly.

[0013] Preferably, a dust collecting assembly is arranged in the downwind direction of the fan.

[0014] Preferably, a pressure sensor is arranged at the bottom of the dust collecting assembly.

[0015] The use method of the above-mentioned water-free photovoltaic panel cleaning system comprises the following steps: The electrode assembly is powered by a direct current power supply assembly, and an electric field is generated on the transparent conductive film to achieve preliminary removal of floating dust; the vibration assembly and the fan are started to achieve deep cleaning and centralized processing of residual dirt.

[0016] The use method of the above-mentioned waterless cleaning system for photovoltaic panels is characterized in that when the image acquisition assembly identifies that the dirt type is sand dust, the control unit controls the vibration frequency of the vibration assembly to be 20-40 kHz; when the image acquisition assembly identifies that the dirt type is clay or animal excrement, the control unit controls the vibration frequency of the vibration assembly to be 40-50 kHz.

[0017] Compared with the prior art, the present application has the following beneficial technical effects: The present application discloses a waterless cleaning system for photovoltaic panels. First, a pulse voltage is applied to the electrode assembly at the edge of the transparent conductive film to establish an alternating positive and negative electric field, and the dust is charged and adsorbed on the film surface after ionizing the air, without using water, thereby completely avoiding the water consumption problem of traditional water washing. Second, for residual dirt, the vibration assembly can apply high-frequency vibration to generate shear stress to strip the dirt, and the fan is used to achieve complete removal of the dirt. The waterless cleaning system for photovoltaic panels provided by the present application uses a multi-modal cooperative technology of "electrostatic adsorption-vibration stripping-negative pressure collection" and intelligent adjustment design to systematically solve the core pain points of "water consumption, low efficiency, high cost, and secondary pollution" in traditional cleaning technology. The system has a waterless, low-energy-consumption, and long-life technical architecture, and provides an efficient and reliable cleaning solution for arid regions and distributed photovoltaic systems.

[0018] Further, the electrode assembly includes a plurality of electrodes arranged at intervals, and the plurality of electrodes are connected to the direct current power supply assembly. The plurality of electrodes are arranged at intervals to form a uniform electric field at the edge of the transparent conductive film, thereby avoiding the problem of electric field concentration or attenuation caused by a single electrode. The connection of the plurality of electrodes can reduce the overall resistance and improve the current conduction efficiency, so that the dust charging is more uniform and the adsorption efficiency is improved.

[0019] Further, the plurality of electrodes are alternately connected to the direct current power supply assembly to form alternating positive and negative electrodes. Further, the electrode is a strip electrode, and the width of the strip electrode is 1-2 mm. The narrow strip electrode significantly reduces the shading of the surface of the photovoltaic panel, and at the same time, the adsorption force on the dust is enhanced by concentrating the electric field. Compared with a wide electrode, the narrow strip electrode maximizes the photovoltaic panel power generation efficiency while ensuring the adsorption efficiency.

[0020] Further, the interval distance between the plurality of electrodes is 3-7 cm. The interval distance of 3-7 cm balances the electric field coverage range and energy consumption. If the interval distance is too small, the number of electrodes will increase and the cost will rise. If the interval distance is too large, the electric field will attenuate and the adsorption efficiency will decrease. Experimental verification shows that the electric field coverage uniformity is best when the interval distance is 5 cm.

[0021] Further, the photovoltaic panel waterless cleaning system further comprises a communication configured image acquisition component and a control unit, the control unit is connected with the vibration component, the image acquisition component and the control unit are used to identify the dirt type in real time, the control unit dynamically adjusts the vibration frequency, realizes on-demand cleaning, compared with fixed frequency vibration, the intelligent adjustment effectively improves the stripping efficiency, reduces the energy consumption, and avoids equipment loss caused by excessive vibration.

[0022] Further, a dust collection component is arranged in the downwind direction of the fan, the negative pressure airflow generated by the fan directly guides the stripped dirt to the dust collection component, so that the dirt is prevented from spreading in the air or secondary settlement.

[0023] Further, a pressure sensor is arranged at the bottom of the dust collection component, the dust collection amount is monitored in real time through the pressure sensor, on-demand replacement of the filter bag is realized, the cost of manual inspection is avoided, and the operation and maintenance efficiency is improved.

[0024] In addition, the application also discloses a use method of the photovoltaic panel waterless cleaning system.

[0025] Further, when the image acquisition component identifies that the dirt type is sand dust, the control unit controls the vibration frequency of the vibration component to be 20-40 kHz; when the image acquisition component identifies that the dirt type is clay or animal excrement, the control unit controls the vibration frequency of the vibration component to be 40-50 kHz, the optimal stripping frequency is matched according to the adhesion characteristics of different dirt, sand dust adopts low-frequency vibration of 20-40 kHz, the amplitude is small, and energy waste caused by high-frequency vibration is avoided; clay or excrement adopts high-frequency vibration of 40-50 kHz, high amplitude can be generated, the stripping force is strong, and effective cleaning of high-adhesion dirt is ensured, compared with fixed frequency, dynamic adjustment improves the stripping efficiency and reduces the energy consumption. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some of the embodiments of the application, and therefore should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0027] Figure 1 It is a structural schematic diagram of the photovoltaic panel waterless cleaning system in the application.

[0028] Wherein: 1, photovoltaic panel body, 2, transparent conductive film, 3, electrode, 4, vibration assembly, 5, fan, 6, dust collection assembly. DETAILED DESCRIPTION

[0029] To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor are within the scope of protection of the present application.

[0031] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0032] In the description of the embodiments of the present application, it should be noted that if the terms "upper", "lower", "horizontal", "inner" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present application is used, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0033] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0034] In the description of the embodiments of the present application, it also needs to be explained that, unless otherwise explicitly specified and limited, if the terms "arrange", "install", "connect", "connect" appear, they should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] The present application will be further described in detail below in combination with the drawings: Embodiment 1 As Figure 1 shown, the present application discloses a kind of photovoltaic panel waterless cleaning system, including photovoltaic panel body 1, transparent conductive film 2, vibration component 4 and fan 5; The transparent conductive film 2 is arranged on the surface of the photovoltaic panel body 1, and the edge of the transparent conductive film 2 is provided with an electrode assembly;A direct-current power supply assembly is connected to the electrode assembly. The vibration component 4 is arranged on the photovoltaic panel body 1, and the fan 5 is arranged close to the photovoltaic panel body 1.

[0036] In a preferred embodiment, the electrode assembly includes a plurality of electrodes 3 arranged at intervals, and the plurality of electrodes 3 are connected to the direct-current power supply assembly.

[0037] In a further preferred embodiment, the plurality of electrodes 3 are alternately connected to the direct-current power supply assembly to form positive and negative alternating electrodes.

[0038] The electrode 3 is a strip electrode, and the width of the strip electrode is 1-2 mm.

[0039] The spacing distance between the plurality of electrodes 3 is 3-7 cm.

[0040] Further preferably, the direct-current power supply assembly is a pulse current generator or a capacitor charging and discharging circuit.

[0041] The voltage of the pulse current generator is ±(1-5) kV, that is, when the pulse current generator is a positive pulse current generator, after power-on, the electrode outputs a positive high voltage of +1 kV to +5 kV. At this time, the positive electric field ionizes air molecules to generate positive ions such as O2 + , N2 + , and the positive ions adhere to the surface of the dust particles to make them positively charged. When the pulse current generator is a positive pulse current generator, after power-on, the electrode outputs a negative high voltage of -1 kV to -5 kV. At this time, the negative electric field ionizes air molecules to generate negative ions such as electrons e⁻, and the negative ions adhere to the surface of the dust particles to make them negatively charged.

[0042] The frequency of the pulse current generator is 1-10 Hz.

[0043] Preferably, the transparent conductive film 2 is an ITO film or an FTO film. Specifically, a layer of indium tin oxide ITO or fluorine-doped tin oxide FTO film can be plated on the surface of the photovoltaic panel body 1 by electroplating.

[0044] The transparent conductive film 2 has a light transmittance of >90% and a sheet resistance of <100 Ω / □.

[0045] In a preferred embodiment, the electrostatic dust removal effect of the transparent conductive film 2 in the present application is optimal when the air humidity is greater than 30%, because the conductivity of dust is enhanced under this humidity condition.

[0046] Further, the vibration assembly 4 in the present application is a piezoelectric ceramic vibrator or an electromagnetic vibrator.

[0047] For the piezoelectric ceramic vibrator, the piezoelectric ceramic sheet used is lead zirconate titanate piezoelectric ceramic PZT-5H, which can be arranged along the frame of the photovoltaic panel body 1 to avoid blocking the effective light receiving area of the photovoltaic panel body 1. The voltage range of the piezoelectric ceramic vibrator is 20-50 kHz, exciting the piezoelectric ceramic sheet to generate vibrations with an amplitude of 1-5 μm. The vibrations are conducted through the photovoltaic panel body 1, causing the contaminants to peel off, with a peeling force of >0.05 N / cm 2 .

[0048] Further, in a more preferred embodiment, the waterless cleaning system for photovoltaic panels further comprises a communication-equipped image acquisition assembly and a control unit connected to the vibration assembly 4. The image acquisition assembly can be a camera installed in the corner of the photovoltaic panel, using a wide-angle lens with a resolution of ≥1080P to avoid blocking the main light receiving area; the control unit integrates a lightweight CNN model to process images in real time locally. When the image acquisition assembly acquires the type of dirt falling on the photovoltaic panel body 1 and analyzes it, the vibration frequency of the vibration assembly 4 is controlled according to the analysis results. When the dirt type is sand and dust, the vibration frequency of the vibration assembly 4 is controlled to be 20-40 kHz, under which the peeling force is >0.05 N / cm 2 . When the dirt type is clay or animal feces, the vibration frequency of the vibration assembly 4 is controlled to be 40-50 kHz, under which the peeling force is >0.1 N / cm 2 .

[0049] In a further preferred embodiment, the fan 5 is arranged along the lower edge of the photovoltaic panel body 1, with a trapezoidal cross-section and a lightweight ABS plastic material.

[0050] The fan 5 has a wind speed of 3-5 m / s and a power of 30 W, with a noise of <50 dB.

[0051] The fan 5 can be a brushless fan or a negative pressure fan.

[0052] In addition, a dust collection assembly 6 is arranged in the downwind direction of the fan 5, preferably a detachable nanofiber filter bag, the pore size of the nanofiber filter bag is 1 μm, and the dust capacity is 200 g / m 2 .

[0053] The dirt stripped by vibration falls under the action of gravity, the airflow of the fan 5 sucks the dirt into the air duct, the dirt is captured by the dust collection assembly 6, and the clean air is discharged from the back.

[0054] Further preferably, the bottom of the dust collection assembly 6 is provided with a pressure sensor, which can realize automatic alarm and replacement of the dust collection assembly 6.

[0055] The application provides a waterless cleaning method for photovoltaic panels based on the multi-modal cooperation of "electrostatic adsorption-vibration stripping-negative pressure collection", which combines intelligent identification and dynamic adjustment technology to realize efficient, low-consumption and waterless cleaning of the surface of photovoltaic panels. The specific steps are as follows: The electrostatic adsorption stage, i.e. the preliminary removal of floating dust: When the environmental humidity is greater than 30%, it is automatically started by setting a humidity sensor or according to a timing program, such as every morning, and the execution steps are as follows: the strip-shaped electrodes at the edge of the transparent conductive film are connected to the direct current power supply assembly, outputting pulse voltage, and the positive and negative electrodes alternately generate an electric field, ionizing air molecules to form positive / negative ions, which adhere to the surface of dust particles to make them charged. The charged dust is adsorbed to the surface of the transparent conductive film under the action of the electric field force.

[0056] The vibration stripping stage, i.e. the deep removal of residual dirt: After electrostatic adsorption, residual dirt is detected by the image acquisition assembly. The execution steps are as follows: the camera shoots the image of the surface of the photovoltaic panel and identifies the type and position of the dirt, the control unit adjusts the frequency of the vibration assembly according to the type of the dirt, the vibration assembly generates high-frequency vibration, which is conducted to the photovoltaic panel glass through the aluminum alloy frame, forming shear stress at the dirt interface, destroying the adhesion between the dirt and the surface, and removing the dirt.

[0057] The negative pressure collection stage, i.e. the concentrated treatment of dirt: It can be started simultaneously after the vibration stripping is started, or it can be started according to a timing program, and the execution steps are as follows: the fan generates negative pressure along the lower edge of the photovoltaic panel, forming a directional airflow from the surface of the photovoltaic panel to the air duct. The stripped dirt falls to the air duct inlet under the action of negative pressure and gravity and is carried to the dust collection assembly by the airflow. When the pressure sensor at the bottom of the dust collection assembly detects that the weight is about 80% of the capacity, an alarm is triggered to prompt manual replacement of the filter bag.

[0058] In summary, the photovoltaic panel waterless cleaning system in the application realizes the waterless cleaning of the photovoltaic panel through the three-level synergistic mechanism of 'electrostatic adsorption + high-frequency vibration + airflow collection', and the core is to integrate the three function modules of electrostatic dust removal, high-frequency vibration stripping and negative pressure airflow collection to form a complete closed loop from dirt charging adsorption, adhesive dirt stripping to dirt collection, realize efficient, waterless and low-energy consumption cleaning of the surface of the photovoltaic panel, and is an ideal cleaning solution for arid regions and distributed photovoltaic systems.

[0059] Example 2 In order to verify the performance of the photovoltaic panel waterless cleaning system in the application, it is applied in a certain desert power station. In the scene of the desert photovoltaic power station, the system realizes efficient, waterless and low-energy consumption cleaning of typical pollutants such as sand dust and clay through multi-modal synergistic dust removal technology, and the specific process is as follows: Morning electrostatic adsorption stage: the diurnal temperature difference in the desert area is large, and the humidity is usually > 30% in the morning, mainly due to dew condensation or night humidity residue. At this time, the dust surface adsorbs water molecules, and the conductivity is significantly improved. The system takes advantage of this feature to preferentially start the electrostatic dust removal module: a plurality of strip electrodes are arranged along the frame of the photovoltaic panel, the plurality of strip electrodes are alternately positive and negative, the interval is 5 cm, ±3kV pulse voltage is applied at intervals, the frequency is 1Hz, and a uniform electric field is formed on the surface of the photovoltaic panel. The dust particles are polarized under the action of the electric field force and are adsorbed on the surface of the transparent conductive film after being charged. The measured data shows that more than 90% of the floating dust, including sand dust and loose clay, can be removed in this stage, the adsorption efficiency is increased by 40% in a dry environment with humidity <10%, and the energy consumption is only 10W / m 2 , which is lower than 100W / m 2 of the traditional high-pressure water gun.

[0060] Residual sand vibration stripping stage: for stubborn sand particles that are still adhered after electrostatic adsorption, such as particles that form mechanical embedding with the glass surface, the system switches to the piezoelectric vibration module: PZT-5H piezoelectric ceramic sheets arranged along the frame are applied with a high-frequency voltage of 35kHz to generate micro-vibration through the inverse piezoelectric effect, and the vibration amplitude is 3μm. The vibration is conducted to the glass surface through the aluminum alloy frame to form a high-frequency shear stress at the sand particle and glass interface. When the stress > sand particle adhesion, the sand particle is stripped. Experiments show that 35kHz is the optimal stripping frequency for desert sand particles, and the stripping rate is ≥85% within 10 seconds, and there is no damage to the glass surface.

[0061] Negative pressure collection and dust bag management stage: the stripped dirt is collected and treated by the negative pressure airflow collection module: a brushless fan generates negative pressure in the trapezoidal air duct arranged along the lower edge of the photovoltaic panel to suck the dirt into the detachable nanofiber filter bag. When the weight of the dust collection bag reaches 180g, the pressure sensor triggers an alarm, and the operation and maintenance personnel can quickly replace it through the buckle.

[0062] The cleaning process does not need water, avoids water consumption and water stain residual problems of traditional cleaning.

[0063] The embodiment shows that the comprehensive dust removal efficiency is greater than 95%, the annual water consumption is reduced by 100%, the power generation loss is reduced from 15% to 3%, and the operation and maintenance cost is reduced by 60%. It is an ideal cleaning solution for photovoltaic power stations in arid areas.

[0064] Embodiment 3 For the cleaning needs of distributed photovoltaic systems, the system can be integrated into an autonomous mobile robot to realize the full-process automation of "recognition, positioning and cleaning". The specific implementation is as follows: Robot body design: The robot adopts a four-wheel drive chassis, carries a laser radar and an inertial navigation system, can autonomously plan a path, and can cross a 5cm high frame. The robot top integrates the waterless cleaning system of the photovoltaic panel in the application.

[0065] Dirt identification and positioning: The robot carries a high-definition camera and an edge computing unit, and identifies dirt areas such as dust, bird droppings and leaves in real time through a lightweight CNN model.

[0066] The identification logic is that the camera shoots an image of the surface of the photovoltaic panel, extracts dirt texture features through grayscale and edge detection, matches with a pre-trained data set, and the classification accuracy is greater than 90%. After identification, the system locates the coordinates of the dirt area through an algorithm and plans a cleaning path.

[0067] Local cleaning and energy-saving mode: For the positioned dirt area, the robot only starts cleaning the corresponding area.

[0068] The embodiment shows that the cleaning efficiency is greater than 90%, the single cleaning time is less than 5 minutes, the manual cleaning needs 30 minutes, the annual power consumption is only 100kWh, and the transparent conductive film light transmittance is greater than 90%. Compared with traditional manual cleaning, this scheme realizes "unmanned, accurate and low energy consumption" cleaning, and is a great improvement for distributed photovoltaic operation and maintenance.

[0069] The above are only preferred embodiments of the application and are not used to limit the application. For those skilled in the art, the application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the application shall be included in the protection scope of the application.

Claims

1. A photovoltaic panel waterless cleaning system, characterized in that: It comprises a photovoltaic panel body (1), a transparent conductive film (2), a vibration component (4) and a fan (5); The transparent conductive film (2) is arranged on the surface of the photovoltaic panel body (1), and an electrode assembly is provided at the edge of the transparent conductive film (2); a DC power supply assembly is connected to the electrode assembly; The vibration component (4) is arranged on the photovoltaic panel body (1), and the fan (5) is arranged close to the photovoltaic panel body (1).

2. A photovoltaic panel waterless cleaning system according to claim 1, characterized in that: The electrode assembly comprises a plurality of electrodes (3) arranged at intervals, and the plurality of electrodes (3) are all connected to the DC power supply assembly.

3. The photovoltaic panel waterless cleaning system according to claim 2, characterized in that: The plurality of electrodes (3) are alternately connected to a DC power supply component to form alternating positive and negative electrodes.

4. The photovoltaic panel waterless cleaning system according to claim 2, wherein: The electrode (3) is a strip electrode, and the width of the strip electrode is 1-2 mm.

5. The photovoltaic panel waterless cleaning system according to claim 2, wherein: The distance between the multiple electrodes (3) is 3 to 7 cm.

6. The photovoltaic panel waterless cleaning system according to claim 1, characterized in that: The photovoltaic panel waterless cleaning system further comprises: an image acquisition component of a communication arrangement and a control unit, wherein the control unit is connected to the vibration component (4).

7. The photovoltaic panel waterless cleaning system according to claim 1, characterized in that: A dust collecting assembly (6) is provided downwind of the fan (5).

8. The photovoltaic panel waterless cleaning system according to claim 1, characterized in that: A pressure sensor is provided at the bottom of the dust collecting assembly (6).

9. The method for using the photovoltaic panel waterless cleaning system according to any one of claims 1 to 8, characterized in that: The following steps are involved: The electrode assembly is energized by a DC power supply assembly, and an electric field is generated on the transparent conductive film (2), thereby achieving preliminary removal of floating dust; and the vibration assembly (4) and the fan (5) are started to achieve deep removal and centralized treatment of residual dirt.

10. The method for using a photovoltaic panel waterless cleaning system according to claim 9, characterized in that: When the image acquisition component identifies that the dirt type is sand and dust, the control unit controls the vibration frequency of the vibration component (4) to be 20 to 40 kHz; when the image acquisition component identifies that the dirt type is clay or animal feces, the control unit controls the vibration frequency of the vibration component (4) to be 40 to 50 kHz.

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