Photovoltaic device and photovoltaic system

Abstract

Photovoltaic device characterized in that the photovoltaic device comprises: a photovoltaic component (10), a translucent plate (20), a blowing mechanism (30), an ultrasonic vibrating element, and an ultrasonic controller (50); the translucent plate (20) is connected to the outer surface of the photovoltaic component (10); the ultrasonic vibrating element comprises a first vibrating sticker (41) and a second vibrating sticker (42), wherein the first vibrating sticker (41) and the second vibrating sticker (42) are connected to the translucent plate (20) at a distance from each other; the ultrasonic controller (50) is electrically connected to the ultrasonic vibrating element; the blowing mechanism (30) is oriented towards the translucent plate (20), and at least a part of the blowing mechanism (30) is arranged at an inclination relative to the plane in which the translucent plate (20) is located.

Description

TECHNICAL AREA The present application belongs to the field of photovoltaic technology and relates in particular to a photovoltaic device and a photovoltaic system. STATE OF THE ART A photovoltaic system is capable of converting light energy into solar energy, thus representing an important approach to the use of renewable energies. Typically, during the operation of a photovoltaic system, it is necessary to clean the photovoltaic component using a cleaning device. This prevents dust, contaminants, and similar substances from impairing the photoelectric conversion efficiency of the photovoltaic system. In current technology, the surface of the photovoltaic component is typically rinsed with clean water or cleaned using a cleaning robot. However, rinsing with clean water is hardly feasible in desert regions with water scarcity. Furthermore, it easily leads to wear and tear on the surface of the photovoltaic component. Cleaning robots are expensive and do not achieve satisfactory cleaning results. CONTENT OF THE PRESENT APPLICATION In view of the problems mentioned above, the present utility model is proposed to provide a photovoltaic device and a photovoltaic system that can overcome or at least partially solve the problems mentioned above. To solve the aforementioned technical problems, the present application is structured as follows: In a first aspect, an embodiment of the present application proposes a photovoltaic device comprising: a photovoltaic component, a translucent plate, a blowing mechanism, an ultrasonic vibrator, and an ultrasonic controller; The translucent plate is connected to the outer surface of the photovoltaic component; The ultrasonic vibrator comprises a first vibrator sticker and a second vibrator sticker, wherein the first vibrator sticker and the second vibrator sticker are connected to the translucent plate at a distance from each other; The ultrasonic controller is electrically connected to the ultrasonic vibrator element;The blowing mechanism is oriented towards the translucent plate, and at least part of the blowing mechanism is arranged at an angle relative to the plane in which the translucent plate is located. Optionally, the first vibration sticker and the second vibration sticker are arranged in the middle area of ​​the translucent panel. Optionally, the first vibration sticker and the second vibration sticker are arranged symmetrically on the translucent plate. Optionally, the blowing mechanism includes a tube body and an air outlet opening, wherein the air outlet opening is connected to the tube body and the air outlet opening is oriented towards the translucent plate. Optionally, the pipe body extends in the width direction of the translucent panel, with the length of the pipe body being greater than or equal to the width of the translucent panel. Optionally, there are multiple air outlet openings, with the multiple air outlet openings arranged side by side along the axis of the pipe body. Optionally, the photovoltaic device also includes a bracket, with the pipe body of the blowing mechanism being connected to the bracket. Optionally, the ultrasonic control includes a power supply unit and a control unit, wherein the control unit is electrically connected to the power supply unit and the ultrasonic vibrating element and the blowing mechanism are each electrically connected to the control unit. Optionally, the photovoltaic device further comprises a detector, wherein the detector is electrically connected to the photovoltaic component and the control system, and the detector is designed to detect the photoelectric conversion efficiency of the photovoltaic component; If the photoelectric conversion efficiency is less than or equal to a preset value, the control system activates the ultrasonic vibrating element and the blowing mechanism. In a second aspect, an embodiment of the present application proposes a photovoltaic system, wherein the photovoltaic system comprises the photovoltaic device. In one embodiment of the present application, the photovoltaic device comprises: a photovoltaic component, a translucent plate, a blowing mechanism, an ultrasonic vibrator, and an ultrasonic controller; the translucent plate is connected to the outer surface of the photovoltaic component; the ultrasonic vibrator comprises a first vibrator sticker and a second vibrator sticker, the first vibrator sticker and the second vibrator sticker being connected to the translucent plate at a distance from each other; the ultrasonic controller is electrically connected to the ultrasonic vibrator element; the blowing mechanism is oriented towards the translucent plate, and at least part of the blowing mechanism is inclined relative to the plane in which the translucent plate is located.In this way, the translucent plate protects the surface of the photovoltaic component, thus reducing the wear to which the surface of the photovoltaic component is subject. For example, the translucent plate can be a transparent structure with good light transmission to prevent impairment of the photoelectric conversion efficiency of the photovoltaic component. If dust and contaminants accumulate on the translucent plate, the ultrasonic controller can supply the ultrasonic transducer with electrical energy, so that the first and second transducers of the ultrasonic transducer generate ultrasonic resonance on the translucent plate. This resonance is transmitted and propagates across the translucent plate and, under the influence of the resonance frequency, agitates the dust and contaminants deposited on the translucent plate.Dust and contaminants are dislodged from the translucent panel; subsequently, the airflow generated by the blowing mechanism blows them away, resulting in a relatively effective and reliable removal of the dust and contaminants and a thorough cleaning. Furthermore, at least part of the blowing mechanism is inclined relative to the plane of the translucent panel, thus improving the blowing action on the dust and contaminants and enhancing the cleaning performance of the photovoltaic system. This eliminates the need for rinsing with clean water, which consumes a large amount of water. It also eliminates the need for cleaning robots, which are expensive and often do not provide satisfactory cleaning results. Further aspects and advantages of the present utility model are partly set out in the following description, partly become apparent from the following description, or can be learned through the practical application of the present utility model. BRIEF DESCRIPTION OF THE DRAWING The above-mentioned and / or further aspects and advantages of the present utility model will become clear and easily understandable with reference to the description of the exemplary embodiments in conjunction with the accompanying drawings, wherein: Fig. 1 shows a schematic, structural exploded view of a photovoltaic device according to an exemplary embodiment of the present application; Fig. 2 shows a schematic, structural side view of a photovoltaic device according to an exemplary embodiment of the present application. Reference numeral list: 10 - Photovoltaic component; 20 - Translucent panel; 30 - Blowing mechanism; 41 - First vibration sticker; 42 - Second vibration sticker; 50 - Ultrasonic control; 31 - Tube body; 32 - Air outlet opening. DETAILED DESCRIPTION The embodiments of the present utility model are described in detail below; examples of these embodiments are illustrated in the drawings, where identical or similar reference numerals consistently denote identical or similar elements or elements with the same or similar function. The embodiments described below with reference to the drawings are exemplary and serve only to explain the present utility model; they are not to be understood as limiting the scope of the present utility model. All further embodiments that a person skilled in the art in this field derives from the embodiments in the present application without inventive step fall within the scope of protection of the present application. The terms “first” and “second” used in the description and claims of this application may explicitly or implicitly include one or more of these features. In the description of this utility model, “several” means two or more unless otherwise specified. Furthermore, “and / or” in the description and in the claims means at least one of the connected objects, with the sign “ / ” generally indicating an “or” relationship between the preceding and subsequent objects. In the description of this utility model, it should be noted that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "top," "bottom," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and similar indications of orientation or positional relationship are based on the orientation or positional relationship shown in the drawings. These terms serve solely to facilitate and simplify the description of this utility model and are not intended to indicate or imply that the devices or elements mentioned must necessarily have a particular orientation, be designed in a particular orientation, or be operated in a particular orientation. Therefore, they should not be interpreted as limitations of this utility model. The description of this utility model should clarify that the terms "assembly," "connection," and "connection" are to be understood in a broad sense unless expressly specified or limited otherwise. For example, they may refer to a permanent connection, a detachable connection, or a one-piece connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection via an intermediate medium; or an internal connection between two elements. Those skilled in the art will be able to understand the specific meaning of the aforementioned terms in this utility model depending on the circumstances. With reference to Figures 1 to 2, a schematic structural representation of a photovoltaic device according to an embodiment of the present application is shown, wherein the photovoltaic device may in particular comprise the following: a photovoltaic component 10, a translucent plate 20, a blowing mechanism 30, an ultrasonic vibrator, and an ultrasonic controller 50; the translucent plate 20 is connected to the outer surface of the photovoltaic component 10; the ultrasonic vibrator is connected to the translucent plate 20; the ultrasonic vibrator comprises a first vibrator 41 and a second vibrator 42, wherein the first vibrator 41 and the second vibrator 42 are connected to the translucent plate 20 at a distance from each other; the ultrasonic controller 50 is electrically connected to the ultrasonic vibrator.The blowing mechanism 30 is oriented towards the translucent plate 20, and at least part of the blowing mechanism 30 is arranged at an inclination relative to the plane in which the translucent plate 20 is located. In one embodiment of the present application, the translucent plate 20 protects the surface of the photovoltaic component 10 and thus reduces the wear to which the surface of the photovoltaic component 10 is subject. For example, the translucent plate 20 can be a transparent structure with good light transmittance in order to avoid impairing the photoelectric conversion efficiency of the photovoltaic component 10.When dust and impurities accumulate on the translucent plate 20, the ultrasonic controller 50 can supply the ultrasonic vibrating element with electrical energy, causing the first vibration sticker 41 and the second vibration sticker 42 of the ultrasonic vibrating element to generate ultrasonic vibrations on the translucent plate 20. These vibrations are transmitted and propagated across the translucent plate 20 and, under the influence of the resonant frequency, agitate the dust and impurities deposited on the translucent plate 20, i.e., the dust and impurities are detached from the translucent plate 20. Subsequently, the dust and impurities are blown away from the translucent plate 20 by the airflow emitted by the blowing mechanism 30, thus enabling relatively effective and reliable removal of the dust and impurities and thorough cleaning.Furthermore, at least part of the blowing mechanism 30 is inclined relative to the plane in which the translucent plate 20 is located, so that the blowing mechanism 30 achieves a better blowing effect on dust and contaminants on the translucent plate 20 and improves the cleaning effect of the photovoltaic device. This avoids the consumption of large amounts of water resources for rinsing with clean water. Likewise, the use of cleaning robots, which incur high costs and do not achieve a satisfactory cleaning effect, is eliminated. In one embodiment of the present application, the first vibration sticker 41 and the second vibration sticker 42 are connected to the translucent plate 20 at a distance from each other. This allows the ultrasonic vibrations to be distributed more evenly by the first vibration sticker 41 and the second vibration sticker 42, thereby increasing the cleaning coverage area and thus improving the efficiency of dust and contaminant removal. Furthermore, the spaced arrangement of the first vibration sticker 41 and the second vibration sticker 42 is advantageous for structural stability, prevents local damage, promotes the complete transmission and propagation of the vibrations on the translucent plate 20, enhances the resonance effect, and ensures that the dust is effectively agitated to enable more thorough cleaning in conjunction with the blowing mechanism 30. In particular, in one embodiment of the present application, the first vibration sticker 41 and the second vibration sticker 42 are used as ultrasonic vibration elements, thereby achieving good adhesion and fastening between the ultrasonic vibration elements and the translucent plate 20. This prevents the ultrasonic vibration elements from easily detaching from the translucent plate 20 under the influence of the ultrasonic vibrations. For example, in one embodiment of the present application, the number of first vibration stickers 41 can be one, two, or three, etc.; likewise, the number of second vibration stickers 42 can be one, two, or three, etc. The number can be determined according to the actual requirements. The specific number of first vibration stickers 41 and second vibration stickers 42 is not limited in the embodiments of the present application. In one embodiment of the present application, the first vibration indicator 41 can, for example, be circular, but also elliptical, square, or rectangular, etc. The specific shape of the first vibration indicator 41 is not limited in the embodiments of the present application. Likewise, the second vibration indicator 42 can be circular, but also elliptical, square, or rectangular, etc. The specific shape of the second vibration indicator 42 is not limited in the embodiments of the present application. Furthermore, the shape of the first vibration indicator 41 and the shape of the second vibration indicator 42 can be the same or different. There are no restrictions in this regard in the embodiments of the present application. For example, in an embodiment of the present application, the translucent plate 20 can consist of transparent, tempered glass which has good stiffness, offers better protection for the photovoltaic component 10 and has better light transmission in order to avoid impairing the photoelectric conversion efficiency of the photovoltaic component 10. Optionally, in one embodiment of the present application, the first vibration sticker 41 and the second vibration sticker 42 are arranged in the central region of the translucent plate 20, resulting in more uniform and efficient cleaning coverage. In particular, the ultrasonic vibrations propagate from the center to the edges, thus covering the surface of the plate more comprehensively and reducing blind spots at the edges. At the same time, the central region is typically the area with the highest dust accumulation. By generating vibrations from this area, dust can be agitated more directly, increasing cleaning efficiency. Furthermore, this arrangement facilitates interaction with the wind direction of the blowing mechanism 30, so that the dust loosened by the vibrations can be blown away more easily. In one embodiment of the present application, the first vibration sticker 41 and the second vibration sticker 42 are optionally arranged symmetrically on the translucent plate 20. This symmetrical arrangement of the first vibration sticker 41 and the second vibration sticker 42 enables a more uniform propagation of the ultrasonic vibration energy in all directions. This prevents uneven cleaning and ensures that the dust is effectively agitated across the entire surface of the translucent plate 20. Furthermore, the first vibration sticker 41 and the second vibration sticker 42 work together symmetrically, which facilitates the formation of stable, coordinated resonance waves on the translucent plate 20. This enhances the removal of the adhering dust and increases cleaning efficiency.Furthermore, the symmetrical arrangement of the first vibration damping sticker 41 and the second vibration damping sticker 42 promotes a balanced distribution of the vibration load, thereby reducing the risk of local stresses or fatigue damage to the translucent panel 20 due to long-term asymmetric vibrations and increasing the reliability of the device. In particular, in one embodiment of the present application, the first vibration damping sticker 41 and the second vibration damping sticker 42 can be bonded to the underside of the translucent panel 20, i.e., the first vibration damping sticker 41 and the second vibration damping sticker 42 are located between the translucent panel 20 and the photovoltaic component 10. Optionally, in an embodiment of the present application, the blowing mechanism 30 comprises a tube body 31 and an air outlet opening 32, wherein the air outlet opening 32 is connected to and oriented towards the translucent plate 20. In this way, the tube body 31 serves as an air supply channel, while the air outlet opening 32 acts as the actuator end, enabling a simple structure that is easy to manufacture, assemble, and maintain, and which does not cause any mutual interference with the ultrasonic vibration system.Furthermore, the airflow is directed through the separate air outlet 32 ​​and precisely onto the surface of the translucent plate 20. This effectively blows away the dust loosened by ultrasonic vibrations, prevents airflow dispersion, and increases cleaning efficiency. The air outlet 32 ​​can also be designed separately, facilitating an inclined arrangement relative to the plane of the translucent plate 20. This results in an optimal airflow angle that blows the dust completely away from the surface instead of merely stirring it up. This improves the cleaning effect. For example, in one embodiment of the present application, the pipe body 31 and the air outlet opening 32 can be formed as a single-piece structure, thereby achieving a higher connection strength between the pipe body 31 and the air outlet opening 32 and reducing material loss and the number of manufacturing steps. Furthermore, the pipe body 31 and the air outlet opening 32 can also be formed as separate structures. There are no restrictions in this regard in the embodiments of the present application. In one embodiment of the present application, the tube body 31 optionally extends in the width direction of the translucent plate 20, wherein the length of the tube body 31 is greater than or equal to the width of the translucent plate 20. In this way, the extension length of the tube body 31 covers the entire width of the translucent plate 20, allowing the airflow emitted from the air outlet opening 32 to cover a larger area of ​​the translucent plate 20 and achieving a better blowing effect on dust, contaminants, and the like on the translucent plate 20. Optionally, in one embodiment of the present application, the number of air outlet openings 32 is multiple, wherein the multiple air outlet openings 32 are arranged side by side along the axis of the tube body 31. In this way, the multiple air outlet openings 32 can simultaneously cover a wider area of ​​the translucent plate 20. This corresponds to the cleaning area of ​​the ultrasonic vibrations, reduces cleaning blind zones, and increases the overall cleaning efficiency. Furthermore, the side-by-side arrangement of the multiple air outlet openings 32 enables a more uniform effect of the airflow on the surface of the translucent plate 20. This avoids locally excessively strong or weak airflows and ensures that the dust stirred up by the vibrations is blown away in a stable and uniform manner.This also enables a compact design for the blowing mechanism 30, simplifies the assembly and arrangement of the piping, and helps to reduce manufacturing and maintenance costs. At the same time, the reliability of the system is ensured. For example, in one embodiment of the present application, the number of air outlet openings 32 can be ten, fifteen, twenty, thirty, etc. The multiple air outlet openings 32 can be arranged at intervals or close together, etc. The arrangement can be made according to the actual requirements. The embodiments of the present application do not provide for any restrictions regarding the specific number and arrangement of the air outlet openings 32. In one embodiment of the present application, the photovoltaic device optionally also includes a mounting bracket (not shown), wherein the tube body 31 of the blowing mechanism 30 is connected to the mounting bracket. In this way, the connection of the tube body 31 to the mounting bracket achieves a relatively stable and reliable mounting and support of the blowing mechanism 30, thereby preventing slight displacement and instability of the blowing mechanism 30. Optionally, in one embodiment of the present application, the ultrasonic control unit 50 comprises a power supply unit and a control unit, wherein the control unit is electrically connected to the power supply unit, and the ultrasonic transducer and the blowing mechanism 30 are each electrically connected to the control unit. This enables centralized control and efficient coordination of the system. By using the control unit as a central control unit, which manages the power supply unit, the ultrasonic transducer, and the blowing mechanism 30 in a unified manner, the operating sequences of the ultrasonic transducer and the blowing mechanism 30 can be precisely coordinated.For example, the dust can first be removed by blowing, then the dust is dislodged by ultrasonic vibration, and subsequently the dust is removed again by blowing, thereby increasing cleaning efficiency; at the same time, power distribution is optimized, stable operation is ensured, wiring is simplified, and system integration and reliability are increased. For example, in an embodiment of the present application, the ultrasonic controller 50 can also include an electrical connecting element, such as a cable, wherein the electrical connecting element is connected to both the controller and the ultrasonic vibrating element, thereby establishing a reliable electrical circuit connection between the controller and the first vibrating sticker 41 and the second vibrating sticker 42 of the ultrasonic vibrating element via the electrical connecting element.In addition, a relatively effective and reliable electrical circuit connection can also be established between the control unit and the blowing mechanism 30 via an electrical connecting element, such as a cable. In one embodiment of the present application, the airflow can be supplied to the blowing mechanism 30, for example, via a blower, an air compressor, or a similar structure, thus providing a stable and reliable airflow source for the blowing mechanism 30. For example, the blower or air compressor can supply an airflow to the blowing mechanism 30 via a delivery line, thereby generating an airflow. For example, the blower or air compressor can be electrically connected to the control unit, so that the blower or air compressor is electrically controlled via the control unit, which enables relatively precise control of the blowing mechanism 30. Optionally, in one embodiment of the present application, the photovoltaic device further comprises a detector (not shown), wherein the detector is electrically connected to both the photovoltaic component 10 and the controller, and the detector is configured to detect the photoelectric conversion efficiency of the photovoltaic component 10. If the photoelectric conversion efficiency is less than or equal to a preset value, the controller activates the ultrasonic vibrator and the blowing mechanism 30. In this way, the detector's direct monitoring of the key performance indicator, namely the photoelectric conversion efficiency of the photovoltaic component 10, enables rapid and automatic triggering of the cleaning process as soon as dust accumulation actually impairs power generation efficiency.This ensures the most continuous and efficient power generation possible from the photovoltaic component 10 and reduces energy losses. Furthermore, the system only operates when the efficiency falls below a preset threshold. This avoids unnecessary cleaning under clean or only slightly soiled conditions. This saves energy, reduces wear on mechanical and vibration components, and extends the service life of the entire photovoltaic cleaning system. Moreover, the entire monitoring, assessment, and execution process requires no manual intervention and is suitable for large, decentralized, or remotely located photovoltaic systems. This significantly reduces operating and maintenance costs, as well as the safety risks associated with manual inspections and cleaning.For example, in one embodiment of the present application, the preset value can be determined according to the actual requirements. The embodiments of the present application do not impose any restrictions regarding the specific value of the photoelectric conversion efficiency as a preset value. In one embodiment of the present application, the photovoltaic component 10 can also be referred to as a solar panel and represents the core device that directly converts solar energy into electrical energy. The photovoltaic component 10 typically consists of a cover plate, an encapsulation film, solar cells, and a back panel, which are stacked sequentially from top to bottom, i.e., from the light-receiving surface to the back. The cover plate is typically made of low-iron, ultra-clear, tempered glass, which is characterized by a high degree of transparency (>91%), high strength, and weather resistance, and protects the internal solar cells from mechanical damage, moisture, and UV radiation. The encapsulation film can be made of EVA (ethylene-vinyl acetate copolymer) or POE (polyolefin elastomer), etc.It is located between the cover plate and the solar cells, as well as between the solar cells and the back panel. It is cured through a hot-pressing process and bonds the solar cells, the cover plate, and the back panel into a single unit. The encapsulation film serves for insulation, moisture protection, damping, and improved light transmission. The solar cells form the core of the power generation in the photovoltaic component 10. Currently, monocrystalline silicon cells are the most widely used. These can be monocrystalline silicon cells, polycrystalline silicon cells, or thin-film cells. Monocrystalline silicon cells have a high conversion efficiency, while polycrystalline silicon cells have a slightly lower efficiency but lower costs and a visually striking blue pattern. Thin-film cells (e.g.,Cadmium telluride, copper indium gallium selenium) require less material and have good low-light performance. Multiple solar cells are typically connected in series or parallel to form a battery string, thus increasing the output voltage and current. The backsheet is usually located on the rear of the component and is typically a multilayer composite structure, such as TPT (Tedlar / PET / Tedlar, polyvinylidene fluoride composite film) and TPE (thermoplastic elastomer), which offer high insulation, weather resistance, and water resistance, protecting the solar cells from environmental influences. Furthermore, solar cells may also include an aluminum frame, a junction box, sealant, etc., with the aluminum frame surrounding the component on all sides to provide structural strength, facilitate assembly and mounting, and protect the edges.The junction box is mounted on the outside of the back panel and contains an internal bypass diode to prevent the hot-spot effect in shaded cells and to divert the current via the positive and negative cables. Silicone or butyl rubber, for example, can be used as a sealant. It serves to seal between the frame and the laminate, as well as between the junction box and the back panel, to prevent moisture ingress. The specific type and structure of the photovoltaic component 10 are not limited in the embodiments described in this application. The essence of photovoltaic power generation lies in the photovoltaic effect at a semiconductor PN junction. This process encompasses photon absorption, charge separation, and current output. Specifically, the photon absorption process proceeds as follows: When sunlight (photons) strikes the semiconductor material (e.g., silicon) of the solar cell and the photon energy exceeds the band gap of silicon (approximately 1.12 eV), the electrons in the silicon atoms are excited. They jump from the valence band to the conduction band, creating electron-hole pairs. The charge separation process occurs as follows: Under the influence of the electric field generated at the PN junction (where there are many holes in the P-region and many electrons in the N-region), the excited electrons migrate to the N-region, and the holes migrate to the P-region.This results in the formation of positive (in the P region) and negative (in the N region) charge accumulations on both sides of the PN junction, generating a light-induced electromotive potential. The current output process proceeds as follows: When the two ends of the cells are connected to a load via an external circuit, the electrons flow from the N region to the P region under the influence of the potential difference. There, they recombine with the holes, generating direct current.Factors influencing the photoelectric conversion efficiency of the photovoltaic component 10 include: material properties such as band gap width, charge carrier lifetime, and optical absorption coefficient; optical losses such as glass reflection, reflection at the cell surface (reducible by antireflection coating), and shading by grid line electrodes; electrical losses such as series resistance (due to electrodes, solder strips, etc.), parallel resistance (leakage current), and charge carrier recombination; and environmental factors such as irradiance, spectral distribution, temperature (an increase in temperature generally leads to a decrease in efficiency), and shadowing, etc. In summary, the photovoltaic device in the embodiments of the present application can have at least the following advantages: In one embodiment of the present application, the photovoltaic device comprises: a photovoltaic component, a translucent plate, a blowing mechanism, an ultrasonic vibrator, and an ultrasonic controller; the translucent plate is connected to the outer surface of the photovoltaic component; the ultrasonic vibrator comprises a first vibrator sticker and a second vibrator sticker, wherein the first vibrator sticker and the second vibrator sticker are connected to the translucent plate at a distance from each other; the ultrasonic controller is electrically connected to the ultrasonic vibrator element; the blowing mechanism is oriented towards the translucent plate, and at least part of the blowing mechanism is relative to the plane,The translucent plate is positioned at an angle within the housing. In this way, the translucent plate protects the surface of the photovoltaic component, thus reducing wear and tear. For example, the translucent plate can be a transparent structure with good light transmission to prevent any impairment of the photovoltaic component's photoelectric conversion efficiency. If dust and contaminants accumulate on the translucent plate, the ultrasonic controller can supply electrical energy to the ultrasonic transducer, causing the first and second transducers of the ultrasonic transducer to generate ultrasonic vibrations on the translucent plate.which are transmitted and propagated on the translucent panel and, under the influence of the resonant frequency, agitate the dust and contaminants deposited on the translucent panel, i.e., the dust and contaminants are detached from the translucent panel; subsequently, the dust and contaminants are blown away from the translucent panel by the airflow emitted by the blowing mechanism, enabling relatively effective and reliable removal of the dust and contaminants, as well as thorough cleaning. Furthermore, at least part of the blowing mechanism is inclined relative to the plane in which the translucent panel is located, so that the blowing mechanism achieves a better blowing effect on the dust and contaminants on the translucent panel and improves the cleaning effect of the photovoltaic device. This preventsthat rinsing with clean water consumes a large amount of water resources. Likewise, the use of cleaning robots, which are expensive and do not achieve satisfactory cleaning results, is eliminated. One embodiment of the present application further proposes a photovoltaic system, wherein the photovoltaic system comprises the photovoltaic device. For example, in one embodiment of the present application, the photovoltaic system may comprise several photovoltaic devices, wherein the several photovoltaic devices may be arranged in an array-like arrangement or uniformly distributed, etc. The specific arrangement of the several photovoltaic devices is not limited in the embodiments of the present application. The photovoltaic system in an embodiment of the present application can have at least the following advantages: In an embodiment of the present application, the photovoltaic system comprises the photovoltaic device, wherein the photovoltaic device comprises: a photovoltaic component, a translucent plate, a blowing mechanism, an ultrasonic vibrator, and an ultrasonic controller; the translucent plate is connected to the outer surface of the photovoltaic component; the ultrasonic vibrator comprises a first vibrator sticker and a second vibrator sticker, wherein the first vibrator sticker and the second vibrator sticker are connected to the translucent plate at a distance from each other; the ultrasonic controller is electrically connected to the ultrasonic vibrator element; the blowing mechanism is oriented towards the translucent plate.and at least part of the blowing mechanism is arranged at an angle relative to the plane in which the translucent plate is located. In this way, the translucent plate protects the surface of the photovoltaic component and thus reduces the wear to which the surface of the photovoltaic component is subject. For example, the translucent plate can be a transparent structure with good light transmission to avoid impairing the photoelectric conversion efficiency of the photovoltaic component. If dust and contaminants accumulate on the translucent plate, the ultrasonic controller can supply the ultrasonic vibrator with electrical energy, so that the first and second vibrator pads of the ultrasonic vibrator generate ultrasonic vibrations on the translucent plate.which are transmitted and propagated on the translucent panel and, under the influence of the resonant frequency, agitate the dust and contaminants deposited on the translucent panel, i.e., the dust and contaminants are detached from the translucent panel; subsequently, the dust and contaminants are blown away from the translucent panel by the airflow emitted by the blowing mechanism, enabling relatively effective and reliable removal of the dust and contaminants, as well as thorough cleaning. Furthermore, at least part of the blowing mechanism is inclined relative to the plane in which the translucent panel is located, so that the blowing mechanism achieves a better blowing effect on the dust and contaminants on the translucent panel and improves the cleaning effect of the photovoltaic device. This preventsthat rinsing with clean water consumes a large amount of water resources. Likewise, the use of cleaning robots, which are expensive and do not achieve satisfactory cleaning results, is eliminated. In the description of this specification, terms such as "an embodiment," "some embodiments," "an exemplary embodiment," "an example," "a specific example," or "some examples" refer to the fact that the specific features, structures, materials, or properties described in connection with that embodiment or example are included in at least one embodiment or example of the present utility model. In this description, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the described specific features, structures, materials, or properties may be combined appropriately in one or more embodiments or examples. Although exemplary embodiments of the present utility model have been shown and described, it is understandable to those skilled in the art that numerous changes, modifications, substitutions, and variations can be made to these exemplary embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

Photovoltaic device characterized in that the photovoltaic device comprises: a photovoltaic component (10), a translucent plate (20), a blowing mechanism (30), an ultrasonic vibrating element, and an ultrasonic controller (50); the translucent plate (20) is connected to the outer surface of the photovoltaic component (10); the ultrasonic vibrating element comprises a first vibrating sticker (41) and a second vibrating sticker (42), wherein the first vibrating sticker (41) and the second vibrating sticker (42) are connected to the translucent plate (20) at a distance from each other; the ultrasonic controller (50) is electrically connected to the ultrasonic vibrating element; the blowing mechanism (30) is oriented towards the translucent plate (20), and at least a part of the blowing mechanism (30) is arranged inclined relative to the plane in which the translucent plate (20) is located. Photovoltaic device according to claim 1, characterized in that the first vibration sticker (41) and the second vibration sticker (42) are arranged in the central area of ​​the translucent plate (20). Photovoltaic device according to claim 1, characterized in that the first vibration sticker (41) and the second vibration sticker (42) are arranged symmetrically on the translucent plate (20). Photovoltaic device according to claim 1, characterized in that the blowing mechanism (30) comprises a tube body (31) and an air outlet opening (32), wherein the air outlet opening (32) is connected to the tube body (31) and the air outlet opening (32) is in contact with the tube body (31), and wherein the air outlet opening (32) is oriented towards the translucent plate (20). Photovoltaic device according to claim 4, characterized in that the tube body (31) extends in the width direction of the translucent plate (20), wherein the length of the tube body (31) is greater than or equal to the width of the translucent plate (20). Photovoltaic device according to claim 4, characterized in that the number of air outlet openings (32) is several and the several air outlet openings (32) are arranged next to each other along the axial direction of the tube body (31). Photovoltaic device according to claim 4, characterized in that the photovoltaic device further comprises a holder, wherein the tube body (31) of the blowing mechanism (30) is connected to the holder. Photovoltaic device according to claim 1, characterized in that the ultrasonic control (50) comprises a power supply unit and a control unit, wherein the control unit is electrically connected to the power supply unit and the ultrasonic vibrating element and the blowing mechanism (30) are each electrically connected to the control unit. Photovoltaic device according to claim 8, characterized in that the photovoltaic device further comprises a detector, wherein the detector is electrically connected to the photovoltaic component (10) and the control unit, and the detector is configured to detect the photoelectric conversion efficiency of the photovoltaic component (10); when the photoelectric conversion efficiency is less than or equal to a preset value, the control unit controls the ultrasonic vibrating element and the blowing mechanism (30) so that they are put into operation. Photovoltaic system, characterized in that the photovoltaic system comprises a photovoltaic arrangement according to one of claims 1 to 9.

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