A device and method for self-cleaning of photovoltaic panel surfaces

Abstract

The application relates to the technical field of laser gyroscopes, and particularly relates to a self-cleaning device and method for a photovoltaic panel surface, which comprises a gyro body and a correction unit, wherein the correction unit comprises: a temperature acquisition module, which is arranged on the gyro body and acquires current working temperature data of the gyro body; a data operation processing module, which obtains the acquired temperature data, performs operation processing through an established function relation model of angular velocity and temperature data, and outputs expected angular velocity data; an error correction module, which obtains actual output angular velocity data of the gyro body, performs comparison operation processing with the expected angular velocity data, obtains current angular velocity error parameters, and calculates angular velocity compensation parameters based on an error evolution model; and a feedback adjustment module, which outputs the angular velocity compensation parameters to a control circuit of the gyro body, so that the angular velocity output of the gyro body is dynamically corrected, and the continuous stability and accuracy of the angular velocity output of the laser gyroscope are realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of photovoltaic power generation panels, in particular to a self-cleaning device and method for the surface of a photovoltaic panel. BACKGROUND

[0002] Photovoltaic power generation panels, as a device for converting solar energy into electrical energy, have been widely used around the world. However, the surface cleaning of photovoltaic power generation panels is crucial for their efficient operation. Dust, leaves or other debris accumulated on the surface of photovoltaic power generation panels can significantly reduce the efficiency of light reception, affecting the efficiency of electrical energy generation, and long-term accumulation may also cause damage to the materials of photovoltaic power generation panels. Therefore, regular cleaning of photovoltaic power generation panels not only ensures their appearance, but more importantly, ensures their long-term efficient operation.

[0003] Some photovoltaic power generation panel cleaning technologies mainly include manual cleaning, robot cleaning and mechanical and manual cleaning. Manual cleaning has the problems of low efficiency, high cost, long cycle and low efficiency, especially under the influence of factors such as climate change, the photovoltaic power generation panel cleaning time is short, and manual cleaning is prone to scratches or cracks. Although mechanical automatic cleaning technology can save labor costs, it also has problems such as high cost, unreliable equipment, sometimes unsatisfactory cleaning effect, limited site conditions, and the need for dedicated personnel to maintain the equipment. In addition, when cleaning the surface of the photovoltaic power generation panel, it is difficult to clean the tightly adhered foreign matter and dirt on the surface of the photovoltaic power generation panel, thus causing poor cleaning effect.

[0004] Therefore, the present application proposes a self-cleaning device and method for the surface of a photovoltaic panel. SUMMARY

[0005] The present application aims to provide a self-cleaning device and method for the surface of a photovoltaic panel to solve one of the above problems in the prior art.

[0006] Specifically, the present application achieves the following technical solutions:

[0007] A self-cleaning device for the surface of a photovoltaic panel, comprising a photovoltaic power generation panel and a cleaning assembly arranged on the surface of the photovoltaic power generation panel, the cleaning assembly comprising a cleaning mechanism and a driving mechanism, the driving mechanism being used to drive the cleaning mechanism to move back and forth on the surface of the photovoltaic power generation panel to perform cleaning work on the surface of the photovoltaic power generation panel;

[0008] The cleaning mechanism comprises a sleeve arranged along the width direction of the photovoltaic panel, a rotating rod coaxially sleeved in the sleeve, one end of the rotating rod rotatingly penetrating to the outside of the sleeve, and the other end rotatingly connected with the sleeve through a rotating member, a scraper arranged at the bottom of the sleeve along the axial direction thereof, and a plurality of cleaning plates connected with the sleeve through a movable member arranged at the upper portion of the scraper, one end of the cleaning plate penetrating through the movable member and extending into the sleeve, and a plurality of swing members corresponding to the cleaning plates arranged on the surface of the rod body of the rotating rod inside the sleeve.

[0009] The swing member comprises a wave-shaped ring groove and a sliding block, the wave-shaped ring groove is arranged around the rotating rod, and the sliding block is slidingly embedded in the wave-shaped sliding groove and slidingly matched with the wave-shaped sliding groove.

[0010] Further, one end of the scraper away from the sleeve is arranged in an inclined manner along the direction close to the surface of the photovoltaic panel and forms a concave arc-shaped inclined portion, and a guide slope is further arranged on the surface of the inclined portion, the height of the guide slope decreases from the middle position to both sides and smoothly transitions.

[0011] As a preferred technical solution, one end of the cleaning plate close to the scraper is provided with a cleaning member, and the other end of the cleaning plate in the sleeve is hingedly connected with the sliding block, the cleaning member comprises a sector plate connected with the end portion of the cleaning plate, and a brush adhered to the bottom plate surface of the sector plate.

[0012] As a preferred technical solution, the movable member comprises a strip-shaped groove and a rotating sleeve, the strip-shaped groove is arranged on the surface of the sleeve, and the length direction of the strip-shaped groove is parallel to the length direction of the sleeve, the rotating sleeve is embedded in the inner wall of the strip-shaped groove, and both sides of the rotating sleeve are rotatingly connected with the groove walls on both sides of the strip-shaped groove through rotating shafts, the rotating sleeve is internally provided with a through groove matched with the cleaning plate, and the through groove is tightly connected with the cleaning plate.

[0013] Specifically, the driving mechanism comprises a driving assembly, the driving assembly comprises a lead screw located on one side of the photovoltaic panel and having a length direction perpendicular to the length direction of the sleeve, a driving motor mounted on one end of the lead screw, and a nut sleeve sleeved outside the lead screw and connected with one end of the sleeve.

[0014] More specifically, the driving mechanism further comprises a driven assembly, the driven assembly comprises a rack rod located on the other side of the photovoltaic panel and having a length direction parallel to the length direction of the lead screw, and a gear meshingly arranged on the rack rod and connected with the rotating rod penetrating to one end outside the sleeve.

[0015] Further, the photovoltaic panel is further provided with a detection assembly electrically connected with the driving mechanism, when the detection assembly detects that there is foreign matter attached on the photovoltaic panel, the driving mechanism is simultaneously started to drive the cleaning assembly to clean the surface of the photovoltaic panel.

[0016] As a further preferred technical solution, the detection component includes a beam emitter, a beam receiver, a photoelectric converter and a central control mainboard that are connected to each other by signal. The beam emitter and the photoelectric receiver are respectively installed on the support rods at the front and rear ends of the photovoltaic panel, and there are several beam emitters and photoelectric receivers, and the several beam emitters and photoelectric receivers correspond to each other one by one. The beam emitter emits a parallel light beam along the length direction of the photovoltaic panel, and the beam receiver receives the beam signal emitted by the beam emitter and converts it into an electrical signal and outputs it to the photoelectric converter; the photoelectric converter converts the received electrical signal into a digital signal and outputs it to the central control mainboard; the central control mainboard is connected to the drive motor signal, and determines whether there is foreign matter on the surface of the photovoltaic panel based on the digital signal it receives, and starts the drive motor when foreign matter is detected, so that it drives the cleaning component to clean the surface of the photovoltaic panel.

[0017] Further preferably, a beam intensity detection unit is integrated inside the photoelectric converter, and the beam intensity detection unit is preset with a beam intensity threshold, which is used to detect the beam signal intensity when the beam receiver receives the beam signal emitted by the beam transmitter. When the beam signal intensity is lower than the beam intensity threshold, the beam intensity detection unit generates an abnormal signal and transmits it to the central control main board, so that the central control main board triggers the start of the drive motor.

[0018] A method for self-cleaning the surface of a photovoltaic panel is based on a device for self-cleaning the surface of a photovoltaic panel. Specifically, the method includes the following steps:

[0019] S1. Start the detection component, start the beam transmitter and the beam receiver, so that the beam transmitter emits a parallel beam along the length direction of the photovoltaic panel and the beam receiver receives the beam signal;

[0020] S2. Beam signal detection: The beam signal intensity is detected by a beam intensity detection unit. If the beam signal intensity is lower than a preset threshold, an abnormal signal is generated.

[0021] S3, foreign matter attachment judgment: after receiving the abnormal signal, the central control mainboard determines that there is foreign matter attached to the surface of the photovoltaic panel and triggers the start of the drive motor;

[0022] S4. Initial scraping work begins. The drive motor drives the screw, so that the screw rotates and drives the nut to move back and forth on the surface. The reciprocating movement of the nut drives the sleeve to move on the surface of the photovoltaic panel, so that the movement of the sleeve drives the scraper to move and scrape on the surface of the photovoltaic panel;

[0023] S5, continuously cleaning, when the scraper is moved to remove the photovoltaic panel by the sleeve, the gear is moved on the surface of the rack rod, so that the gear rotates, and then the rotating rod rotates in the sleeve; then the sleeve rotates and drives the cleaning plate to swing through the swing piece, and then continuously cleans the surface of the photovoltaic panel to enhance the cleaning effect;

[0024] S6, cleaning effect detection: after the cleaning assembly moves a certain distance, the detection assembly is started again to detect whether the surface of the photovoltaic panel has been cleaned, if it has been cleaned, stop the driving mechanism; if it has not been cleaned, repeat steps S4-S5.

[0025] Compared with the prior art, the present application has the following advantages and beneficial effects:

[0026] 1, the cleaning mechanism and the driving mechanism are set to work together, which realizes the automatic cleaning of the photovoltaic panel, reduces the labor cost and time consumption, improves the cleaning efficiency, reduces the maintenance cost, and avoids the damage of the photovoltaic panel caused by manual cleaning;

[0027] 2, the sleeve is arranged along the width direction of the photovoltaic panel, and the scraper is arranged at the bottom of the sleeve along the axial direction, one end of the scraper is designed as an inclined shape, and a concave arc inclined part is formed, which cooperates with the guide slope, so that it can be more closely attached to the surface of the photovoltaic panel when cleaning the photovoltaic panel, so that it can directly act on the surface of the photovoltaic panel to physically remove the closely attached dirt on the surface of the photovoltaic panel, and a rotating rod is coaxially arranged in the sleeve, and a plurality of swing pieces are arranged on the rotating rod, and the swing pieces are connected with the cleaning plate, and each swing piece includes a wave-shaped ring groove and a sliding block, so that the rotating rod can drive the cleaning plate to swing left and right when rotating, thereby effectively increasing the contact area of cleaning, and cooperating with the scraper, the cleaning strength can be greatly enhanced, thereby effectively removing the dirt on the surface of the photovoltaic panel, and greatly improving the cleaning efficiency and cleaning effect of the surface of the photovoltaic panel;

[0028] 3、The scheme is further ingenious by setting the detection assembly, and the detection assembly includes a light beam emitter, a light beam receiver, a photoelectric converter and a central control mainboard. When detecting, the light beam emitter emits parallel light beams along the length direction of the photovoltaic panel, the light beam receiver receives the light beam signals and converts them into electrical signals output to the photoelectric converter, and the photoelectric converter can convert the electrical signals into digital signals and output to the central control mainboard. Meanwhile, the photoelectric converter is integrated with a light beam intensity detection unit which can detect the intensity of the electrical signals output by the light beam receiver before the photoelectric converter converts the electrical signals into digital signals, that is, as a detection link, it can evaluate the light beam signal intensity. When the light beam intensity is lower than the preset threshold, it will immediately generate an abnormal signal, and then transmit the abnormal signal to the central control mainboard, so that it can trigger the driving motor based on the abnormal signal, and thus it can discover whether there is foreign matter attached to the surface of the photovoltaic panel in time and drive the cleaning mechanism to clean correspondingly, thereby improving the response speed and accuracy of the cleaning device and reducing manual intervention, so that the accuracy and efficiency of the cleaning device are effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0029] The drawings described herein are used to provide further understanding of the embodiments of the present application, constitute a part of the present application, and do not constitute a limitation of the embodiments of the present application. In the drawings:

[0030] Figure 1 It is a schematic diagram of the overall structure of the embodiment 1 of the present application;

[0031] Figure 2 It is a schematic diagram of the structure of the cleaning mechanism of the present application;

[0032] Figure 3 It is a schematic diagram of the local structure of the moving part of the present application; Figure 2

[0033] Figure 4 It is a schematic diagram of the swing state of the cleaning plate of the present application, which is intended to show that the slider moves from the trough position of the wave-shaped ring groove in a to the peak position in b; Figure 4 Figure 4

[0034] Figure 5 It is a schematic diagram of the signal flow of the detection assembly of the present application;

[0035] Figure 6 It is a schematic diagram of the method steps of the embodiment 2 of the present application.

[0036] Markings in the drawings and corresponding names of parts:

[0037] ​​​1, photovoltaic power generation panel; 20, sleeve; 200, scraper; 2000, guide slope; 201, cleaning plate; 202, fan-shaped plate; 21, rotating rod; 210, wave-shaped ring groove; 211, sliding block; 220, strip-shaped groove; 221, rotating sleeve; 30, screw rod; 31, driving motor; 32, nut sliding sleeve; 33, rack rod; 34, gear; 40, light beam emitter; 41, light beam receiver; 42, photoelectric converter; 43, light beam intensity detection unit; 44, central control mainboard. DETAILED DESCRIPTION

[0038] The technical solutions of the present application will be further described in detail below with reference to the accompanying drawings, but the protection scope of the present application is not limited to the following description.

[0039] For the purpose of the present application, the technical solutions and advantages are more clearly and clearly understood, the present application is further described in detail in conjunction with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application, and are not used to limit the present application, that is, the described examples are only a part of the embodiments of the present application, but not all the embodiments. 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.

[0040] Therefore, the detailed description of the embodiments of the present application provided in the accompanying drawings below is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of the present application. It should be noted that the relationship terms such as "first" and "second" and the like are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations.

[0041] Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or mechanical equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or mechanical equipment. Without more limitation, the element defined by the sentence "including a…" does not exclude the presence of another identical element in the process, method, article or mechanical equipment including the element.

[0042] The features and properties of the present application are further described in detail below in conjunction with the examples.

[0043] Example 1;

[0044] Please refer to the accompanying drawings Figures 1 to 5This embodiment provides a self-cleaning device for the surface of a photovoltaic panel, comprising a photovoltaic panel 1 and a cleaning assembly provided on the surface of the photovoltaic panel 1. The cleaning assembly comprises a cleaning mechanism and a driving mechanism. The driving mechanism is used to drive the cleaning mechanism to reciprocate on the surface of the photovoltaic panel 1 to clean the surface of the photovoltaic panel 1.

[0045] The cleaning mechanism includes a sleeve 20 arranged along the width direction of the photovoltaic panel 1, a rotating rod 21 coaxially sleeved in the sleeve 20, one end of the rotating rod 21 rotates to penetrate the outside of the sleeve 20, and the other end is rotatably connected to the sleeve 20 through a rotating member, a scraper 200 is provided at the bottom of the sleeve 20 along its axial direction, and a plurality of cleaning plates 201 connected to the sleeve 20 through movable members are further provided on the upper part of the scraper 200, one end of the cleaning plate 201 passes through the movable member and extends into the sleeve 20, and a plurality of swinging members corresponding to the cleaning plates 201 are provided on the surface of the rod body of the rotating rod 21 located inside the sleeve 20;

[0046] The swinging member includes a wave-shaped annular groove 210 and a slider 211. The wave-shaped annular groove 210 is opened around the rotating rod 21. The slider 211 is slidably embedded in the wave-shaped groove and slidably cooperates with it. Furthermore, the wave-shaped annular groove 210 is in the shape of a sine curve.

[0047] It should be noted that the self-cleaning device on the surface of the photovoltaic panel 1 realizes automatic cleaning through the coordinated work of an integrated driving mechanism and a cleaning mechanism. Specifically, the driving mechanism is responsible for driving the cleaning mechanism to move back and forth on the surface of the photovoltaic panel 1, so that after the cleaning mechanism moves, it drives the sleeve 20 to move back and forth along the length direction of the photovoltaic panel 1, and then drives the scraper 200 to pre-scrape away the dirt and foreign matter attached to the surface of the photovoltaic panel 1. At the same time, when the sleeve 20 moves, it can also cooperate with the rotating rod 21 located inside it to drive the cleaning plate 201 to swing left and right for cleaning, so that it cooperates with the scraper 200 to effectively clean the dirt and foreign matter on the surface of the photovoltaic panel 1, thereby reducing manual intervention, reducing maintenance costs, improving cleaning efficiency, and enhancing the photoelectric conversion efficiency of the photovoltaic panel 1, while avoiding cleaning dead corners and ensuring comprehensive cleaning.

[0048] Based on the above embodiments, Figure 2 As shown, it should be further explained here that the end of the scraper 200 away from the sleeve 20 is inclined in the direction close to the surface of the photovoltaic panel 1, and forms a concave arc-shaped inclined portion, and a guide slope 2000 is also provided on the surface of the inclined portion. The height of the guide slope 2000 decreases and smoothly transitions from its middle position to both sides.

[0049] In this embodiment, the design of the scraper 200 is particularly considered in terms of the adhesion to the surface of the photovoltaic panel 1 and the cleaning efficiency, that is, the end of the scraper 200 away from the sleeve 20 is intentionally inclined to the surface of the photovoltaic panel 1, forming a concave arc-shaped inclined part, so that the scraper 200 can be more attached to the curved surface of the photovoltaic panel 1, thereby providing better dirt removal effect during cleaning. At the same time, a guide slope 2000 is also provided on the surface of the inclined part, and the height of the slope decreases from the middle position to both sides, and the transition is smooth, which helps the debris removed by the scraper 200 to slide to both sides spontaneously when entering the scraper 200, so as to facilitate the timely falling of the debris from the scraper 200, avoiding its adhesion to the scraper 200 and affecting the scraping efficiency.

[0050] As a preferred embodiment of the above embodiment, the scraper 200 is provided with a cleaning member at one end close to the sleeve 20, and the other end of the cleaning member in the sleeve 20 is hingedly connected with the sliding block 211. Figure 2 The cleaning member comprises a fan-shaped plate 202 connected with the end of the cleaning plate 201, and a brush adhered to the bottom surface of the fan-shaped plate 202.

[0051] It should be noted that when cleaning the surface of the photovoltaic panel 1, it is difficult to effectively clean the dirt and debris attached to the surface of the photovoltaic panel 1 only by the scraper 200, and even if it is cleaned, it is easy to cause scratches on the surface of the photovoltaic panel 1. In view of this, the cleaning member is provided in this embodiment to cooperate with the scraper 200 to achieve efficient cleaning of the surface of the photovoltaic panel 1. Specifically, the cleaning member consists of two parts: the fan-shaped plate 202 connected with the end of the cleaning plate 201 and the brush adhered to the bottom surface of the fan-shaped plate 202, so that the cleaning plate 201 can not only remove larger dirt and debris through its physical structure, but also remove smaller dust and particles by the brush into the small gaps on the surface of the photovoltaic panel 1. That is, when the driving mechanism is started and the sliding block 211 is driven to slide in the wave-shaped ring groove 210 by the rotating rod 21, the movement of the sliding block 211 causes the cleaning plate 201 to reciprocate in the sleeve 20, and the fan-shaped plate 202 drives the brush to perform cleaning action on the surface of the photovoltaic panel 1. Based on this design, the cleaning efficiency is improved, and the softness of the brush reduces the risk of damage to the surface of the photovoltaic panel 1, prolonging the service life of the photovoltaic panel 1. In addition, the swinging cleaning mode of the cleaning plate 201 can ensure a larger contact area and a more uniform cleaning effect, avoiding cleaning dead angles and ensuring that the entire surface of the photovoltaic panel 1 can be effectively cleaned.

[0052] As a preferred embodiment, the scraper 200 is provided with a cleaning member at one end close to the sleeve 20, and the other end of the cleaning member in the sleeve 20 is hingedly connected with the sliding block 211. Figure 3As shown, the movable element includes a strip-shaped slot 220 and a rotating sleeve 221, the strip-shaped slot 220 is arranged on the surface of the sleeve 20 and its length direction is parallel to the length direction of the sleeve 20, the rotating sleeve 221 is embedded in the inner wall of the strip-shaped slot 220 and its two sides are rotationally connected with the slot walls on both sides of the strip-shaped slot 220 through rotating shafts, the rotating sleeve 221 is internally provided with a through slot matched with the cleaning plate 201, and the through slot is tightly connected with the cleaning plate 201. Through the above design, the cleaning plate 201 can swing in the strip-shaped slot through the rotating sleeve.

[0053] Based on the above embodiment, the driving mechanism is specifically described, which includes a driving assembly, the driving assembly includes a lead screw 30 located on one side of the photovoltaic panel 1 and having a length direction perpendicular to the length direction of the sleeve 20, a driving motor 31 mounted at one end of the lead screw 30, and a nut sleeve 32 sleeved on the outside of the lead screw 30 and connected with one end of the sleeve 20.

[0054] It should be noted that the main purpose of the driving assembly is to drive the sleeve 20 to reciprocate on the surface of the photovoltaic panel 1, therefore, after the driving motor 31 is started, it can drive the lead screw 30 to rotate, so that the lead screw 30 drives the nut sleeve 32 sleeved on its surface to move axially on its surface after rotating, and then the nut sleeve 32 drives the sleeve 20 to move after moving. It should be further noted that for the driving motor 31, in order to realize the reciprocating movement of the sleeve 20 on the surface of the photovoltaic panel 1, it is necessary to periodically reverse the rotation, that is, after rotating in the forward direction for a certain time or number of turns, it can be reversely rotated for a certain time or number of turns, so as to facilitate the sleeve 20 to reciprocate on the surface of the photovoltaic panel 1 through the lead screw nut mechanism composed of the nut sleeve 32 and the lead screw 30, thereby improving the cleaning effect.

[0055] More specifically, the driving mechanism further includes a driven assembly, the driven assembly includes a rack rod 33 located on the other side of the photovoltaic panel 1 and having a length direction parallel to the length direction of the lead screw 30, and a gear 34 meshingly arranged on the rack rod 33, and the side surface of the gear 34 is connected with the rotating rod 21 penetrating to one end outside of the sleeve 20.

[0056] For the driven assembly, its main purpose is to drive the rotating rod 21 to rotate in the sleeve 20 synchronously when the sleeve 20 moves, so as to realize the work of the swing member and the cleaning member through the rotation of the rotating rod 21. Specifically, when the sleeve 20 moves on the surface of the photovoltaic panel 1, the rotating rod 21 can drive the gear 34 to move on the rack 33 due to the fact that one end of the rotating rod 21 penetrates to the outside of the sleeve 20 and the gear 34 is engaged with the rack 33. Then, through the cooperation of the gear 34 and the rack 33, the rotating rod 21 is driven to rotate in the sleeve 20, so that the wave-shaped ring groove 210 on the surface of the rotating rod 21 rotates after the rotating rod 21 rotates. After the wave-shaped ring groove 210 rotates, the sliding block 211 slidingly embedded in the wave-shaped ring groove 210 can change its position relative to the wave-shaped ring groove 210 in real time (i.e. the sliding block 211 changes cyclically from the trough position of the wave-shaped ring groove 210 to the peak position of the wave-shaped ring groove 210, and then changes from the peak position to the trough position again). Through the position change of the sliding block 211, the cleaning plate 201 is driven to swing left and right in the strip-shaped groove 220 through the rotating sleeve 221. Then, through the swing action of the cleaning plate 201, the brush attached to the bottom of the fan-shaped plate 202 can clean the surface of the photovoltaic panel 1, and the trace of the brush on the surface of the photovoltaic panel 1 is cleaned, so as to improve the cleaning effect of the cleaning device and effectively protect the surface of the photovoltaic panel 1. Figure 4 As shown in Figure 4 , the position of the sliding block 211 changes from the trough position of the wave-shaped ring groove 210 to the peak position of the wave-shaped ring groove 210. Figure 4 As shown in , the position of the sliding block 211 changes from the trough position of the wave-shaped ring groove 210 to the peak position of the wave-shaped ring groove 210.

[0057] As a further implementation of the above embodiment, as shown in Figure 5 , a detection assembly is further arranged on the photovoltaic panel 1, and the detection assembly is electrically connected with the driving mechanism. When the detection assembly detects that there is foreign matter attached on the photovoltaic panel 1, the driving mechanism is started synchronously to drive the cleaning assembly to clean the surface of the photovoltaic panel 1.

[0058] As a further preferred implementation plan of the above embodiment, the detection component includes a beam emitter 40, a beam receiver 41, a photoelectric converter 42 and a central control mainboard 44 that are signal-connected to each other. The beam emitter 40 and the photoelectric receiver are respectively installed on the support rods at the front and rear ends of the photovoltaic panel 1, and there are several beam emitters 40 and photoelectric receivers, and the several beam emitters 40 and photoelectric receivers correspond to each other one by one. The beam emitter 40 emits a parallel light beam along the length direction of the photovoltaic panel 1, and the beam receiver 41 receives the beam signal emitted by the beam emitter 40 and converts it into an electrical signal and outputs it to the photoelectric converter 42; the photoelectric converter 42 converts the received electrical signal into a digital signal and outputs it to the central control mainboard 44; the central control mainboard 44 is signal-connected to the drive motor 31, and judges whether there is foreign matter on the surface of the photovoltaic panel 1 based on the digital signal it receives, and starts the drive motor 31 when foreign matter is detected, so that it drives the cleaning component to clean the surface of the photovoltaic panel 1. It should be noted here that in order to avoid the cleaning mechanism from blocking the parallel light beam emitted by the light beam emitter 40 and thus affecting the detection results, each component of the cleaning mechanism of the present application and the position corresponding to each light beam emitter 40 are made of translucent materials (such as translucent glass).

[0059] It should be understood that, in specific implementations, the operation and operating principles of the detection assembly involve the coordinated operation of the beam emitter 40, the beam receiver 41, the photoelectric converter 42, and the central control mainboard 44. First, the beam emitter 40 emits parallel light beams along the length of the photovoltaic panel 1. These light beams are received by the beam receivers 41, which are located on the support rods at the front and rear ends of the photovoltaic panel 1. When the surface of the photovoltaic panel 1 is clean and free of foreign matter, the beam receiver 41 can normally receive the light beam signal. However, when foreign matter, such as dust or debris, is present on the surface, the light beam is blocked, preventing the beam receiver 41 from receiving the complete light beam signal. The received light signal is then converted into an electrical signal and output to the photoelectric converter 42. The photoelectric converter 42 is responsible for further converting the electrical signal into a digital signal for processing by the central control mainboard 44. The central control mainboard 44 determines whether there is foreign matter on the surface of the photovoltaic panel 1 based on the received digital signal. If there is a possibility of foreign matter on the surface of the photovoltaic panel 1, the central control mainboard 44 activates the drive motor 31 to drive the cleaning assembly to clean the surface of the photovoltaic panel 1. Specifically, this technical solution uses intelligent detection components to achieve rapid detection and response to foreign matter on the surface of the photovoltaic panel 1, automatically start the cleaning action, improve the power generation efficiency and maintenance convenience of the photovoltaic panel 1, and reduce the risk and cost of manual cleaning.

[0060] It is further needed to be supplemented herein that the light beam intensity detection unit 43 is integrated inside the photoelectric converter 42, which is preset with a light beam intensity threshold value, for detecting the light beam signal intensity when the light beam receiver 41 receives the light beam signal emitted by the light beam emitter 40, and generating an abnormal signal and transmitting it to the central control mainboard 44 when the light beam signal intensity is lower than the light beam intensity threshold value, so as to make the central control mainboard 44 trigger the starting of the driving motor 31.

[0061] In the above embodiment, it is further needed to be supplemented that the light beam receiver 41 converts the optical signal into an electrical signal after receiving the optical signal, which involves the cooperation of the photoelectric converter 42 and the light beam intensity detection unit 43. It should be understood that the light beam receiver 41 converts the optical signal into an electrical signal through the photoelectric effect after receiving the optical signal emitted by the light beam emitter 40. This process usually involves a photodiode or other photoelectric sensor, and the light beam intensity detection unit 43 is integrated inside the photoelectric converter 42, which actually detects the intensity of the analog electrical signal before it is converted into a digital signal. That is, this detection unit can be regarded as a pre-detection link, which does not wait for the completion of analog-to-digital conversion (A / D conversion), but evaluates the signal intensity at the analog electrical signal stage. When the light beam intensity is lower than the preset threshold value, the light beam intensity detection unit 43 will immediately generate an abnormal signal, which is an independent alarm or trigger signal, to tell the central control mainboard 44 that the light beam intensity has changed abnormally, i.e. due to the presence of foreign matter on the surface of the photovoltaic panel 1. It is further needed to be explained herein that this abnormal signal is not repeated and does not conflict with the subsequent converted digital signal. The digital signal is the output of the electrical signal after analog-to-digital conversion, which is used for further analysis and processing by the central control mainboard 44. That is, the digital signal provides a quantitative value of the light beam intensity, so that the central control mainboard 44 can continuously and accurately monitor the change of the light beam intensity. The abnormal signal is an immediate response mechanism, which ensures that the system can be fed back in time and take action quickly when the light beam intensity changes sharply. Therefore, for this scheme, through the cooperation of the light beam intensity detection unit 43 and the photoelectric converter 42, the system can quickly respond to possible abnormal situations and accurately monitor the light beam intensity for a long time, thereby improving the reliability and response speed of the system. Specifically, the light beam intensity detection unit 43 provides immediate abnormal detection, and the digital signal conversion provides detailed and accurate light beam intensity data, thereby improving the reliability and response speed of the system.

[0062] Embodiment 2;

[0063] The embodiment is based on the self-cleaning device for the surface of a photovoltaic panel proposed in Embodiment 1, and specifically discloses a self-cleaning method for the surface of a photovoltaic panel. Please refer to Figure 6 The method comprises the following steps:

[0064] S1, starting the detection assembly, starting the light beam emitter 40 and the light beam receiver 41, so that the light beam emitter 40 emits parallel light beams along the length direction of the photovoltaic panel 1, and the light beam receiver 41 receives the light beam signal; S2, light beam signal detection, detecting the light beam signal intensity through the light beam intensity detection unit 43, and generating an abnormal signal if the light beam signal intensity is lower than a preset threshold; S3, foreign matter adhesion judgment, judging that there is foreign matter adhesion on the surface of the photovoltaic panel 1 and triggering the starting of the driving motor 31 after the central control mainboard 44 receives the abnormal signal; S4, starting the preliminary scraping work, driving the screw rod 30 after the driving motor 31 works, so that the screw rod 30 rotates and drives the nut to move back and forth on the surface of the screw rod 30, and then driving the sleeve 20 to move on the surface of the photovoltaic panel 1 after the nut moves back and forth, so that the sleeve 20 drives the scraper 200 to move and scrape on the surface of the photovoltaic panel 1; S5, continuous cleaning work, driving the gear 34 to move on the surface of the rack rod 33 while the sleeve 20 drives the scraper 200 to move and scrape on the photovoltaic panel 1, so that the gear 34 rotates, and then driving the rotating rod 21 to rotate in the sleeve 20 after the gear 34 rotates; and then driving the cleaning plate 201 to swing through the swing piece after the sleeve 20 rotates, so as to continuously clean the surface of the photovoltaic panel 1 and enhance the cleaning effect; S6, cleaning effect detection, starting the detection assembly again after the cleaning assembly moves a certain distance, detecting whether the surface of the photovoltaic panel 1 has been cleaned, stopping the driving mechanism if the surface has been cleaned; and repeating steps S4-S5 if the surface has not been cleaned.

[0065] The self-cleaning method for the surface of a photovoltaic panel 1, proposed based on the aforementioned embodiment, achieves an automated and intelligent cleaning process through a series of precisely controlled steps, significantly improving the cleaning efficiency and maintenance convenience of the photovoltaic panel 1. First, by activating the detection assembly, the light beam emitter 40 and the light beam receiver 41 work in tandem to achieve real-time monitoring of the surface of the photovoltaic panel 1. The introduction of the light beam intensity detection unit 43 enables the system to sensitively detect even subtle changes in the light beam signal intensity, thereby quickly identifying foreign matter adhered to the surface of the photovoltaic panel 1. Once the central control motherboard 44 determines the presence of foreign matter, it immediately activates the drive motor 31. The reciprocating movement of the screw rod 30 and the nut drives the sleeve 20, performing the initial scraping operation of the scraper 200, effectively removing stubborn dirt from the photovoltaic panel 1. Subsequently, the coordination of the gear 34 and the rack rod 33 causes the rotating rod 21 to rotate within the sleeve 20, driving the cleaning blade 201 to continuously swing and clean, further enhancing the cleaning effect and ensuring a comprehensive cleanliness of the photovoltaic panel 1 surface. Finally, by reactivating the detection component, the system can automatically determine the cleaning effect and implement closed-loop control of the cleaning process until the surface of photovoltaic panel 1 is completely clean. The advantage of this method is that it not only improves cleaning efficiency and reduces manual intervention, but also reduces the risk of reduced power generation efficiency due to foreign matter adhesion to photovoltaic panel 1 through intelligent detection and response mechanisms, thereby extending the service life of photovoltaic panel 1.

[0066] It should be noted that in order to make the technical solution of this application clearer, the professional terms involved in this application are explained here;

[0067] In this application, the term "beam transmitter" refers to a device that can emit a parallel light beam along the length of a photovoltaic panel. It is typically composed of a light source such as a laser or LED, and is used to emit continuous or pulsed light signals that can be received and detected by a beam receiver. In this technical solution, the beam transmitter is used to detect the presence of foreign matter attached to the surface of the photovoltaic panel;

[0068] In this application, the term "beam receiver" refers to a device that receives a beam signal emitted by a beam transmitter and converts the received optical signal into an electrical signal. In this technical solution, a beam receiver is provided in a one-to-one correspondence with a beam transmitter, and is responsible for receiving the parallel beam emitted along the length of the photovoltaic panel and converting it into an electrical signal for output.

[0069] In this application, the term "photoelectric converter" refers to a device that converts optical signals into electrical signals. It receives the electrical signal from the beam receiver and converts it into a digital signal so that the central control motherboard can process it.

[0070] In the present application, the term "hollow mainboard" refers to a processing chip mainly responsible for receiving digital signals output by the photoelectric converter and determining whether there is foreign matter on the surface of the photovoltaic panel according to the signals. In the present technical solution, the main control board starts the driving motor to drive the cleaning assembly to perform cleaning action when foreign matter is detected.

[0071] In the present application, the term "light beam intensity detection unit" refers to a unit for detecting the intensity of the light beam signal. It is pre-set with a light beam intensity threshold value for detecting the light beam signal intensity when the light beam receiver receives the light beam signal emitted by the light beam emitter. In the present technical solution, when the light beam signal intensity is lower than the pre-set threshold value, the light beam intensity detection unit generates an abnormal signal and transmits it to the main control board to trigger the driving motor. The above-mentioned professional terms refer to existing mature components, and their specific models will not be described here.

[0072] Based on the above detailed description of the specific embodiments, the purpose, technical solution and beneficial effects of the present application are further described in detail. It should be understood that the above description is only a specific embodiment of the present application and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A self-cleaning device for a photovoltaic panel surface, comprising a photovoltaic panel (1) and a cleaning assembly provided on the surface of the photovoltaic panel (1), characterized in that: The cleaning assembly comprises a cleaning mechanism and a driving mechanism, wherein the driving mechanism is used to drive the cleaning mechanism to move back and forth on the surface of the photovoltaic power generation panel (1) to clean the surface of the photovoltaic power generation panel (1); The cleaning mechanism comprises a sleeve (20) arranged along the width direction of the photovoltaic power generation panel (1), a rotating rod (21) coaxially sleeved in the sleeve (20), one end of the rotating rod (21) rotates and penetrates to the outside of the sleeve (20), and the other end thereof is rotatably connected to the sleeve (20) through a rotating member, a scraper (200) is provided at the bottom of the sleeve (20) along its axial direction, and a plurality of cleaning plates (201) connected to the sleeve (20) through a movable member are further provided on the upper part of the scraper (200), one end of the cleaning plate (201) passes through the movable member and extends into the sleeve (20), and a plurality of swinging members corresponding to the cleaning plates (201) are provided on the surface of the rod body of the rotating rod (21) located inside the sleeve (20); The swinging member comprises a wave-shaped ring groove (210) and a sliding block (211), wherein the wave-shaped ring groove (210) is opened around the rotating rod (21), and the sliding block (211) is slidably embedded in the wave-shaped groove and slidably cooperates with the wave-shaped groove; The end of the scraper (200) away from the sleeve (20) is tilted in a direction close to the surface of the photovoltaic panel (1) to form a concave arc-shaped inclined portion, and a guide slope (2000) is further provided on the surface of the inclined portion. The height of the guide slope (2000) decreases from its middle position toward both sides thereof and transitions smoothly. The cleaning plate (201) is provided with a cleaning member at one end close to the scraper (200), and the other end of the cleaning plate (201) located in the sleeve (20) is hinged to the slider (211), and the cleaning member includes a fan-shaped plate (202) connected to the end of the cleaning plate (201), and a brush adhered to the bottom plate surface of the fan-shaped plate (202); The driving mechanism further includes a driven component, the driven component including a rack rod (33) located on the other side of the photovoltaic panel (1) and having a length direction parallel to the length direction of the screw rod (30), a gear (34) meshing with the rack rod (33), and a side surface of the gear (34) connected to a rotating rod (21) extending through one end of the outside of the sleeve (20); A detection component is also provided on the photovoltaic power generation panel (1), and the detection component is electrically connected to the driving mechanism. When the detection component detects that a foreign object is attached to the photovoltaic power generation panel (1), the driving mechanism is synchronously started to drive the cleaning component to clean the surface of the photovoltaic power generation panel (1).

2. The self-cleaning device for photovoltaic panel surface according to claim 1, characterized in that: The movable part comprises a strip groove (220) and a rotating sleeve (221). The strip groove (220) is provided on the surface of the sleeve (20), and its length direction is parallel to the length direction of the sleeve (20). The rotating sleeve (221) is embedded in the inner wall of the strip groove (220), and its two sides are rotatably connected to the groove walls on both sides of the strip groove (220) through a rotating shaft. A through groove adapted to the cleaning plate (201) is provided inside the rotating sleeve (221), and the through groove is tightly connected to the cleaning plate (201).

3. The self-cleaning device for photovoltaic panel surface according to claim 1, characterized in that: The driving mechanism comprises an active component, wherein the active component comprises a screw rod (30) located on one side of the photovoltaic power generation panel (1) and having a length direction perpendicular to the length direction of the sleeve (20), a driving motor (31) mounted on one end of the screw rod (30), and a nut sleeve (32) sleeved on the outside of the screw rod (30) and connected to one end of the sleeve (20).

4. The self-cleaning device for photovoltaic panel surface according to claim 3, characterized in that: The detection component includes a beam emitter (40), a beam receiver (41), a photoelectric converter (42) and a central control mainboard (44) which are signal-connected to each other. The beam emitter (40) and the photoelectric receiver are respectively mounted on support rods at the front and rear ends of the photovoltaic power generation panel (1). A plurality of beam emitters (40) and photoelectric receivers are provided, and the plurality of beam emitters (40) and photoelectric receivers correspond to each other. The beam emitter (40) emits a parallel beam along the length direction of the photovoltaic power generation panel (1). The beam receiver (41) receives the beam signal emitted by the beam emitter (40) and converts it into an electrical signal and outputs it to the photoelectric converter (42). The photoelectric converter (42) converts the received electrical signal into a digital signal and outputs it to the central control mainboard (44). The central control mainboard (44) is signal-connected to the drive motor (31) and determines whether there is a foreign object on the surface of the photovoltaic power generation panel (1) based on the digital signal it receives. When a foreign object is detected, the drive motor (31) is started to drive the cleaning component to clean the surface of the photovoltaic power generation panel (1).

5. The self-cleaning device for photovoltaic panel surface according to claim 4, characterized in that: The photoelectric converter (42) is internally integrated with a beam intensity detection unit (43). The beam intensity detection unit (43) is preset with a beam intensity threshold value and is used to detect the intensity of the beam signal when the beam receiver (41) receives the beam signal emitted by the beam transmitter (40). When the beam signal intensity is lower than the beam intensity threshold value, the beam intensity detection unit (43) generates an abnormal signal and transmits it to the central control mainboard (44), so that the central control mainboard (44) triggers the start of the drive motor (31).

6. A method for self-cleaning the surface of a photovoltaic panel, based on the self-cleaning device for the surface of a photovoltaic panel according to any one of claims 1 to 5, characterized in that: The method comprises the following steps: S1, starting the detection component, starting the light beam transmitter (40) and the light beam receiver (41), so that the light beam transmitter (40) emits a parallel light beam along the length direction of the photovoltaic panel (1), and the light beam receiver (41) receives the light beam signal; S2, beam signal detection, detecting the beam signal intensity through the beam intensity detection unit (43), and generating an abnormal signal if the beam signal intensity is lower than a preset threshold; S3, foreign matter attachment judgment, after receiving the abnormal signal, the central control main board (44) judges that there is foreign matter attached to the surface of the photovoltaic panel (1), and triggers the start of the drive motor (31); S4, starting the preliminary scraping work, the driving motor (31) drives the screw (30) after it starts working, so that the screw (30) rotates and drives the nut to move back and forth on its surface, and then the nut moves back and forth and drives the sleeve (20) to move on the surface of the photovoltaic power generation panel (1), so that the sleeve (20) moves and drives the scraper (200) to move and scrape on the surface of the photovoltaic power generation panel (1); S5, continuous cleaning work, when the sleeve (20) drives the scraper (200) to move and scrape the photovoltaic power generation panel (1), it simultaneously drives the gear (34) to move on the surface of the rack rod (33), so that the gear (34) rotates, and then the gear (34) rotates and drives the rotating rod (21) to rotate in the sleeve (20); and then the sleeve (20) rotates and drives the cleaning plate (201) to swing through the swinging member, so as to continuously clean the surface of the photovoltaic power generation panel (1) to enhance the cleaning effect; S6. Cleaning effect detection: After the cleaning component moves a certain distance, the detection component is started again to detect whether the surface of the photovoltaic panel (1) has been cleaned. If it has been cleaned, the driving mechanism is stopped; if it has not been cleaned, steps S4-S5 are repeated.

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