Self-driven photovoltaic panel cleaning equipment and cleaning method

Abstract

The invention relates to the technical field of photovoltaic panel maintenance, and discloses self-driven photovoltaic panel cleaning equipment and a cleaning method, and the self-driven photovoltaic panel cleaning equipment comprises a sliding rail, a first driving assembly, a second driving assembly, a cleaning assembly and a controller; the sliding rail is fixedly connected to one side of the photovoltaic panel, and the first driving assembly is arranged on the sliding rail; the second driving assembly is connected to the first driving assembly, and the controller is used for controlling the first driving assembly to drive the second driving assembly to move in the length direction of the sliding rail; the sweeping assembly is connected to the second driving assembly, and the controller is further used for controlling the second driving assembly to drive the sweeping assembly to move in the direction perpendicular to the length direction of the sliding rail; the sweeping assembly comprises a lifting part and a sweeper; the controller is further used for controlling the lifting component to drive the sweeper to be close to or away from the photovoltaic panel. The sweeper is used for sweeping stains on the surface of the photovoltaic panel. According to the technical scheme, the photovoltaic panel can be cleaned in time, and the problems that the labor amount of manual cleaning of the photovoltaic panel is large, and the cleaning efficiency is low are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic panel maintenance, and particularly to a self-driven photovoltaic panel cleaning device and a cleaning method. Background Art

[0002] Photovoltaic panels, also called solar panels, are mainly composed of multiple solar cell units. They are devices that directly convert solar energy into electrical energy and are also the core part of a solar power generation system. Photovoltaic panels are usually fixedly installed outdoors and are generally in an inclined state. Due to the complex outdoor environment, after a period of use, impurities such as dust and bird droppings are likely to adhere to their surfaces. Especially in the north, due to large amounts of sand and dust and frequent yellow mud rain, a layer of sediment often adheres to the surface of photovoltaic panels. The pollution on the surface of photovoltaic panels will cause the light transmittance of the photovoltaic panels to decrease, thereby affecting the power generation efficiency and causing economic losses. There is data indicating that: when photovoltaic panels are not cleaned for a long time, the power generation will decrease by 20% - 30%. Therefore, in order to improve the power generation efficiency of photovoltaic panels, it is necessary to clean the impurities on the surface of photovoltaic panels.

[0003] However, the existing cleaning methods mainly rely on manual cleaning. During operation, workers need to hold cleaning tools to clean the surface of photovoltaic panels. This method has a large labor intensity, low operation efficiency, and manual cleaning often cannot detect stains on photovoltaic panels in a timely manner. Increasing the frequency of manual cleaning will correspondingly increase the cleaning cost. Therefore, there is an urgent need to propose a self-driven photovoltaic panel cleaning device and a cleaning method to solve the above problems. Summary of the Invention

[0004] The main purpose of the present invention is to provide a self-driven photovoltaic panel cleaning device and a cleaning method to solve the problems of large labor intensity and low cleaning efficiency in manual cleaning of photovoltaic panels.

[0005] To achieve the above object, the self-driven photovoltaic panel cleaning device proposed by the present invention includes a slide rail, a first driving component, a second driving component, a cleaning component, and a controller; the controller is respectively communicatively connected to the first driving component, the second driving component, and the cleaning component; the slide rail is fixedly connected to one side of the photovoltaic panel, and the first driving component is arranged on the slide rail; the second driving component is connected to the first driving component, and the controller is used to control the first driving component to drive the second driving component to move along the length direction of the slide rail; the cleaning component is connected to the second driving component, and the controller is further used to control the second driving component to drive the cleaning component to move along a direction perpendicular to the length direction of the slide rail; the cleaning component includes a lifting component and a cleaner; the controller is further used to control the lifting component to drive the cleaner to approach or move away from the photovoltaic panel; the cleaner is used to clean the stains on the surface of the photovoltaic panel.

[0006] Preferably, the slide rail includes a slide rail body, a fixing plate and a fastener; the fixing plate is connected to the slide rail body, and the slide rail body is fixedly connected to the photovoltaic panel through the fixing plate and the fastener; a chute is formed in the slide rail body, and the first driving component is arranged in the chute.

[0007] Preferably, the first driving component includes a first motor, a first lead screw and a first movable block; the first motor is fixedly arranged at one end of the chute, and the output shaft of the first motor is coaxially connected to one end of the first lead screw, and the other end of the first lead screw is rotatably connected to the other end of the chute; the first movable block is threadedly sleeved on the first lead screw and is slidably arranged in the chute; the controller is used to control the start and stop of the first motor; the second driving component is connected to the first movable block.

[0008] Preferably, the second driving component includes a second motor, a second lead screw, a first guide plate, a second guide plate and an end plate; a first installation groove is formed in the first movable block; the first guide plate and the second guide plate are both vertically connected to the first movable block and are respectively arranged on both sides of the first installation groove and face each other; one end of the first guide plate away from the first movable block and one end of the second guide plate away from the first movable block are both vertically connected to the end plate; the second motor is fixedly arranged in the first installation groove, and the output shaft of the second motor is coaxially connected to one end of the second lead screw, and the other end of the second lead screw is rotatably connected to the end plate; the controller is used to control the start and stop of the second motor; the cleaning component is threadedly connected to the second lead screw and is slidably arranged between the first guide plate and the second guide plate.

[0009] Preferably, the second lead screw is a bidirectional lead screw, the number of the cleaning components is 2, and the second lead screw can drive the 2 cleaning components to approach or move away from each other.

[0010] Preferably, the cleaning component further includes a second movable block and a mounting seat; the second movable block is threadedly sleeved on the second lead screw, and the two outer side walls of the second movable block are respectively slidably attached and abutted to the first guide plate and the second guide plate; a second installation groove is formed in the second movable block; the lifting component includes a cylinder, the fixed end of the cylinder is connected to the inner top wall of the second installation groove, the movable end of the cylinder passes through the bottom wall of the second movable block and is connected to the mounting seat; the controller is used to control the start and stop of the cylinder; the cleaner is detachably connected to the side of the mounting seat away from the cylinder; the cleaner includes a cleaning brush for cleaning the photovoltaic panel.

[0011] Preferably, a mounting box is provided on the top of the mounting seat, and the mounting box passes through the bottom wall of the second movable block and extends into the second mounting groove; the sweeper also includes a dust storage box, which is detachably connected to the mounting seat, and the cleaning brush is arranged on the side of the dust storage box away from the mounting seat; the mounting seat is provided with a first connecting port connected to the mounting box, the top wall of the dust storage box is provided with a second connecting port connected to the first connecting port, and the bottom wall of the dust storage box is provided with a dust suction port; a third motor is provided in the mounting box, the output shaft of the third motor is connected to the fan blade, a filter is provided at the second connecting port, and a one-way valve is provided at the dust suction port; the controller is used to control the start and stop of the third motor.

[0012] Preferably, first grooves are symmetrically provided on the upper parts of the two opposite sides of the second movable block, second grooves are symmetrically provided on the lower parts of the two opposite sides of the second movable block, first protrusions are provided on the upper parts of the first guide plate and the second guide plate, second protrusions are provided on the lower parts of the first guide plate and the second guide plate, the first protrusion is embedded in the first groove, and the second protrusion is embedded in the second groove.

[0013] A photovoltaic panel cleaning method is applied to the self-driven photovoltaic panel cleaning device; a camera is arranged on the first guide plate to collect images of the photovoltaic panel surface; a rain sensor is also arranged on the slide rail; a controller is respectively connected to the camera and the rain sensor for communication; the method comprises: The controller divides the surface of the photovoltaic panel into several areas; The controller controls the camera to take a picture of the photovoltaic panel surface to obtain a panel surface image, and performs image recognition on the panel surface image to determine whether there is stain on the photovoltaic panel. If there is stain, the area where the stain is located is marked as a target area; The controller determines whether the current weather is rainy through the rain sensor; If so, the controller controls the first motor, the second motor and the cylinder to work to clean all areas of the photovoltaic panel; If not, the controller controls the first motor, the second motor and the cylinder to operate to clean the target area, and controls the third motor to operate to suck the cleaned stains into the dust storage box.

[0014] Preferably, the controller controls the camera to take a picture of the photovoltaic panel surface to obtain a panel surface image, and performs image recognition on the panel surface image to determine whether there is stain on the photovoltaic panel. If there is stain, the area where the stain is located is marked as the target area, including: The controller uses the panel surface image captured by the camera for the first time after the photovoltaic panel is installed as a reference image; The controller controls the camera to take pictures of the surface of the photovoltaic panel at preset time intervals to obtain multiple surface images; The controller compares the current latest surface image with the reference image to identify stains, thereby determining whether there are stains on the photovoltaic panel; If so, the controller marks the area where the stain is located as the target area.

[0015] In the technical solution of the present invention, the slide rail is fixed on the frame of the photovoltaic panel, the first driving component is arranged on the slide rail, the second driving component is connected to the first driving component, and the cleaning component is connected to the second driving component. The first driving component can drive the second driving component to move along the length direction of the slide rail, and the second driving component can drive the cleaning component to move along a direction perpendicular to the length direction of the slide rail. Therefore, the sweeper of the cleaning component can move in the length direction and width direction of the photovoltaic panel, so as to clean the surface of the photovoltaic panel; the cleaning component further includes a lifting component, and the lifting component can drive the sweeper to approach and move away from the photovoltaic panel. Therefore, the cleaning intensity can be controlled through the lifting component, which is beneficial to improving the cleaning effect. This solution also proposes a cleaning method for the photovoltaic panel, which can effectively solve the problem of untimely cleaning of the photovoltaic panel. In specific applications, the controller divides the surface of the photovoltaic panel into several areas, and controls the camera to take pictures of the surface of the photovoltaic panel to identify the area where the stain is located. At the same time, the controller can judge whether the current weather is rainy through the rain sensor. If it is rainy, it controls the sweeper to clean all areas of the photovoltaic panel. If it is not rainy, it only cleans the area where the stain is located, so that the cleaning device can clean the surface of the photovoltaic panel in time. To sum up, the self-driven photovoltaic panel cleaning device and cleaning method proposed by the present invention can timely detect stains on the photovoltaic panel and clean the stains, solving the problems of large labor intensity and low cleaning efficiency of manual cleaning of the photovoltaic panel. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0017] Figure 1 It is a schematic structural diagram of the self-driven photovoltaic panel cleaning device of the present invention; Figure 2 It is a schematic structural diagram of the photovoltaic panel of the self-driven photovoltaic panel cleaning device of the present invention; Figure 3 It is a schematic diagram of the first partial structure of the self-driven photovoltaic panel cleaning device of the present invention; Figure 4 This is the second partial structural schematic diagram of the self-driven photovoltaic panel cleaning device of the present invention; Figure 5 This is the structural schematic diagram of the cleaning assembly of the self-driven photovoltaic panel cleaning device of the present invention; Figure 6 This is the cross-sectional schematic diagram of the cleaning assembly of the self-driven photovoltaic panel cleaning device of the present invention.

[0018] Explanation of the reference numerals in the drawings: 1 - Photovoltaic panel; 2 - Slide rail; 201 - Chute; 202 - Fixed plate; 203 - Fastener; 3 - First drive assembly; 301 - First motor; 302 - First lead screw; 303 - First movable block; 304 - First installation groove; 4, Second drive assembly; 401 - Second motor; 402 - Second lead screw; 403 - First guide plate; 404 - Second guide plate; 5 - Cleaning assembly; 501 - Second movable block; 502 - Mounting seat; 503 - Second installation groove; 504 - Cylinder; 505 - First groove; 506 - Second groove; 507 - Installation box; 508 - Third motor; 509 - Fan blade; 510 - First communication port; 6 - Cleaner; 601 - Dust storage box; 602 - Cleaning brush; 603 - Second communication port; 604 - Filter screen; 605 - Check valve; 606 - Suction port; 7 - Controller.

[0019] The realization, functional features and advantages of the object of the present invention will be further described in conjunction with the embodiments with reference to the accompanying drawings. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0021] It should be noted that all the directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0022] In addition, in the present invention, descriptions such as "first", "second", etc. are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0023] In the present invention, unless otherwise clearly specified and defined, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In addition, the technical solutions between various embodiments of the present invention can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0025] The present invention provides a self-driven photovoltaic panel cleaning device and a cleaning method.

[0026] Please refer to Figures 1 to 6 , the self-driven photovoltaic panel cleaning device includes a slide rail 2, a first driving component 3, a second driving component 4, a cleaning component 5, and a controller 7; the controller 7 is communicatively connected to the first driving component 3, the second driving component 4, and the cleaning component 5 respectively; the slide rail 2 is fixedly connected to one side of the photovoltaic panel 1, and the first driving component 3 is arranged on the slide rail 2; the second driving component 4 is connected to the first driving component 3, and the controller 7 is used to control the first driving component 3 to drive the second driving component 4 to move along the length direction of the slide rail 2; the cleaning component 5 is connected to the second driving component 4, and the controller 7 is further used to control the second driving component 4 to drive the cleaning component 5 to move along a direction perpendicular to the length direction of the slide rail 2; the cleaning component 5 includes a lifting component and a cleaner 6; the controller 7 is further used to control the lifting component to drive the cleaner 6 to approach or move away from the photovoltaic panel 1; the cleaner 6 is used to clean the stains on the surface of the photovoltaic panel 1.

[0027] In the technical solution of the present invention, the slide rail 2 is fixed to the frame of the photovoltaic panel 1. The first driving assembly is arranged on the slide rail 2. The second driving assembly 4 is connected to the first driving assembly 3. The cleaning assembly 5 is connected to the second driving assembly 4. The first driving assembly 3 can drive the second driving assembly 4 to move along the length direction of the slide rail 2. The second driving assembly 4 can drive the cleaning assembly 5 to move along a direction perpendicular to the length direction of the slide rail 2. Therefore, the sweeper 6 of the cleaning assembly 5 can move in the length direction and the width direction of the photovoltaic panel 1, so as to clean the surface of the photovoltaic panel 1. The cleaning assembly 5 further includes a lifting member, and the lifting member can drive the sweeper 6 to approach and move away from the photovoltaic panel 1. Therefore, the cleaning force can be controlled by the lifting member, which is beneficial to improving the cleaning effect.

[0028] Specifically, the first driving assembly 3, the second driving assembly 4, the cleaning assembly 5 and the controller 7 are all electrically connected to the photovoltaic panel 1, and are powered directly by the photovoltaic panel 1 or by an energy storage device (such as a storage battery) of the photovoltaic system.

[0029] Furthermore, the length of the slide rail 2 is greater than the length of the photovoltaic panel 1, so that when the components of the cleaning device are in the initial position (i.e., located at the edge of the photovoltaic panel 1), the surface of the photovoltaic panel 1 will not be blocked, affecting the power generation of the photovoltaic panel 1.

[0030] The slide rail 2 includes a slide rail body, a fixing plate 202 and a fastening member 203. The fixing plate 202 is connected to the slide rail body, and the slide rail body is fixedly connected to the photovoltaic panel 1 through the fixing plate 202 and the fastening member 203. The slide rail body is provided with a chute 201, and the first driving assembly 3 is arranged in the chute 201.

[0031] Specifically, the bottom wall of the slide rail body is in close contact with the top wall of the frame of the photovoltaic panel 1. The fixing plate 202 is vertically connected to the bottom wall of the slide rail 2 and is connected to the side wall of the frame of the photovoltaic panel 1 through a fastening member 203 (such as a bolt). The chute 201 is opened on the side of the slide rail 2. The second driving assembly 4 can slide along the chute 201 and slides above the surface of the photovoltaic panel 1. The controller 7 is arranged on the top wall of the slide rail 2.

[0032] The first driving assembly 3 includes a first motor 301, a first lead screw 302 and a first movable block 303. The first motor 301 is fixedly arranged at one end of the chute 201, and the output shaft of the first motor 301 is coaxially connected to one end of the first lead screw 302. The other end of the first lead screw 302 is rotatably connected to the other end of the chute 201. The first movable block 303 is threadedly sleeved on the first lead screw 302 and is slidably arranged in the chute 201. The controller 7 is used to control the start and stop of the first motor 301. The second driving assembly 4 is connected to the first movable block 303.

[0033] Specifically, the first lead screw 302 is parallel to the plate surface of the photovoltaic panel 1. The first lead screw 302 is threadedly passed through the middle of the first movable block 303. When the first motor 301 drives the first lead screw 302 to rotate, the first lead screw 302 can drive the first movable block 303 to move along the first lead screw 303. The first movable block 303 is a rectangular block, and at least one inner wall of the outer wall of the first movable block 303 is in sliding contact with the inner wall of the chute 201 to prevent the first movable block 303 from rotating with the screw.

[0034] The second driving assembly 4 includes a second motor 401, a second lead screw 402, a first guide plate 403, a second guide plate 404 and an end plate; the first movable block 303 is provided with a first installation groove 304; the first guide plate 403 and the second guide plate 404 are both vertically connected to the first movable block 303, and are respectively arranged on both sides of the first installation groove 304 and face each other; one end of the first guide plate 403 away from the first movable block 303 and one end of the second guide plate 404 away from the first movable block 303 are both vertically connected to the end plate; the second motor 401 is fixedly arranged in the first installation groove 304, and the output shaft of the second motor 401 is coaxially connected to one end of the second lead screw 402, and the other end of the second lead screw 402 is rotatably connected to the end plate; the controller 7 is used to control the start and stop of the second motor 401; the cleaning assembly 5 is threadedly connected to the second lead screw 402 and is slidably arranged between the first guide plate 403 and the second guide plate 404.

[0035] Specifically, the first installation groove 304 is located above the first lead screw 302; the second lead screw 402 is perpendicular to the first lead screw 302, and the second lead screw 402 is parallel to the plate surface of the photovoltaic panel 1; the first guide plate 403 and the second guide plate 404 are respectively arranged on both sides of the second lead screw 402.

[0036] Further, the bottom of the end plate is in sliding contact with the top wall of the frame of the photovoltaic panel 1 to improve the supporting force for the second lead screw 402, the first guide plate 403 and the second guide plate 404. Furthermore, a pulley is arranged at the bottom of the end plate, and there is a slot on the top wall of the frame of the photovoltaic panel 1, and the pulley slides along the slot to improve stability.

[0037] The second lead screw 402 is a bidirectional lead screw, and the number of the cleaning assemblies 5 is 2. The second lead screw 402 can drive the 2 cleaning assemblies 5 to approach or move away from each other. The 2 cleaning assemblies 5 are respectively threadedly connected to the threads with opposite helix directions of the bidirectional lead screw. Thus, when the second lead screw 402 rotates, the 2 cleaning assemblies 5 can clean 2 areas simultaneously to improve the cleaning efficiency.

[0038] The cleaning assembly 5 further includes a second movable block 501 and a mounting base 502; the second movable block 501 is threadedly sleeved on the second lead screw 402, and the two outer side walls of the second movable block 501 are respectively in sliding contact and abutment with the first guide plate 403 and the second guide plate 404; a second mounting groove 503 is formed in the second movable block 501; the lifting member includes a cylinder 504, the fixed end of the cylinder 504 is connected to the inner top wall of the second mounting groove 503, the movable end of the cylinder 504 passes through the bottom wall of the second movable block 501 and is connected to the mounting base 502; the controller 7 is used to control the start and stop of the cylinder 504; the sweeper 6 is detachably connected to the side of the mounting base 502 facing away from the cylinder 504; the sweeper 6 includes a cleaning brush 602 for cleaning the photovoltaic panel 1.

[0039] The second lead screw 402 threadedly passes through the second movable block 501. When the second motor 401 drives the second lead screw 402 to rotate, the second lead screw 402 can drive the second movable block 501 to move along the second lead screw 402. Specifically, the second mounting groove 503 is located below the second lead screw 402.

[0040] The two outer side walls of the second movable block 501 are respectively in sliding contact and abutment with the first guide plate 403 and the second guide plate, which can prevent the second movable block 501 from rotating with the screw and ensure the second movable block 501 runs more stably. Specifically, first grooves 505 are symmetrically arranged at the upper parts of the opposite sides of the second movable block 501, second grooves 506 are symmetrically arranged at the lower parts of the opposite sides of the second movable block 501, first protrusions are arranged at the upper parts of the first guide plate 403 and the second guide plate 404, second protrusions are arranged at the lower parts of the first guide plate 403 and the second guide plate 404, the first protrusions are embedded in the first grooves 505, and the second protrusions are embedded in the second grooves 506.

[0041] Further, one connecting plate is respectively arranged on the two side walls of the mounting base 502. One connecting plate abuts against one side wall of the sweeper 6, and the other connecting plate abuts against the opposite side wall of the sweeper 6. The sweeper 6 is detachably connected to the connecting plate by screws to facilitate the replacement of the sweeper 6.

[0042] Furthermore, a pressure sensor (such as a thin-film pressure sensor) is arranged on the brush base of the cleaning brush 602 to detect the pressure on the brush bristles, so as to prevent the cylinder 504 from descending too much, causing the pressure exerted by the cleaning brush 602 on the surface of the photovoltaic panel 1 during cleaning to be too large and damaging the photovoltaic panel 1.

[0043] A mounting box 507 is arranged on the top of the mounting seat 502, and the mounting box 507 passes through the bottom wall of the second movable block 501 and extends into the second mounting groove 503; the sweeper 6 also includes a dust storage box 601, which is detachably connected to the mounting seat 502, and a cleaning brush 602 is arranged on the side of the dust storage box 601 away from the mounting seat 502; the mounting seat 502 is penetrated by a first connecting port 510 connected to the mounting box 507, the top wall of the dust storage box 601 is penetrated by a second connecting port 603 connected to the first connecting port 510, and the bottom wall of the dust storage box 601 is penetrated by a dust suction port 606; a third motor 508 is arranged in the mounting box 507, the output shaft of the third motor 508 is connected to the fan blade 509, a filter screen 604 is arranged at the second connecting port 603, and a one-way valve 605 is arranged at the dust suction port 606; the controller 7 is used to control the start and stop of the third motor 508.

[0044] When the third motor 508 is turned on, the fan blades 509 rotate to drive the air flow, so that the dust and debris on the photovoltaic panel 1 are sucked into the dust storage box 601 through the dust suction port 606. The dust storage box 601 is detachable, which can facilitate the cleaning of impurities in the dust storage box 601. Specifically, there are multiple dust suction ports 606; the bristle base of the cleaning brush 602 is provided with a third connecting port that is connected to and directly faces the dust suction ports 606.

[0045] The filter 604 can prevent debris from entering the installation box 507 and damaging the third motor 508 and the fan blade 509. When the third motor 508 is started, the one-way valve 605 can open the dust suction port 606 to suck in impurities. When the third motor 505 stops, the one-way valve 605 closes the dust suction port 606, thereby preventing the debris entering the dust storage box 601 from falling out of the dust suction port 606. Specifically, the one-way valve 605 is a film-type one-way valve, which occupies a small space.

[0046] In a first embodiment of a photovoltaic panel cleaning method proposed by the present invention, the method is applied to a self-driven photovoltaic panel cleaning device; a camera is provided on the first guide plate 403 for collecting images of the surface of the photovoltaic panel 1; a rain sensor is also provided on the slide rail 2; a controller 7 is respectively connected to the camera and the rain sensor for communication; the method comprises the following steps: Step S110: the controller 7 divides the panel surface of the photovoltaic panel 1 into a plurality of areas; Specifically, the area of ​​each region is equal, and the area of ​​each region is larger than the projection area of ​​the cleaning brush 602 on the photovoltaic panel 1 .

[0047] Step S120: the controller 7 controls the camera to take a picture of the panel surface of the photovoltaic panel 1 to obtain a panel surface image, and performs image recognition on the panel surface image to determine whether there is a stain on the photovoltaic panel 1. If there is a stain, the area where the stain is located is marked as a target area; Specifically, an AI algorithm model can be used here for recognition training to improve the ability of the controller 7 to recognize common stains and sundries (such as dust, bird droppings, leaves, etc.) from multiple dimensions (such as color, shape, brightness, etc.).

[0048] Step S130: The controller 7 determines whether the current weather is rainy through the rain sensor; Step S140: If so, the controller 7 controls the first motor 301, the second motor 401, and the cylinder 504 to work to clean all areas of the photovoltaic panel 1; Step S150: If not, the controller 7 controls the first motor 301, the second motor 401, and the cylinder 504 to work to clean the target area, and controls the third motor 508 to work to suck the cleaned stains into the dust storage box 601.

[0049] A cleaning method for a photovoltaic panel proposed by the present invention can effectively solve the problem of untimely cleaning of the photovoltaic panel. In specific applications, the controller divides the surface of the photovoltaic panel into several areas, and controls the camera to take pictures of the surface of the photovoltaic panel, so as to identify the area where the stain is located. At the same time, the controller can judge whether the current weather is rainy through the rain sensor. If it is rainy, the cleaning device is controlled to clean all areas of the photovoltaic panel. If it is not rainy, only the area where the stain is located is cleaned, so that the cleaning device can clean the surface of the photovoltaic panel in time.

[0050] Cleaning all areas of the photovoltaic panel 1 in rainy days can use rainwater to wash the photovoltaic panel 1 cleaner. At the same time, since the photovoltaic panel 1 is inclined, the impurities after brushing can also be washed away by rainwater; cleaning only the target area of the photovoltaic panel 1 in non-rainy days is beneficial to reducing the frequency of cleaning the dust storage box 601.

[0051] In the second embodiment of a cleaning method for a photovoltaic panel proposed by the present invention, based on the first embodiment, step 120 includes the following steps: Step 210: The controller 7 takes the first captured surface image of the photovoltaic panel 1 after installation by the camera as the reference image; Specifically, the reference image should be an image of the surface of the photovoltaic panel 1 in a clean state.

[0052] Step 220: The controller 7 controls the camera to take pictures of the surface of the photovoltaic panel 1 every preset time period (such as 3 days) to obtain multiple surface images; Specifically, the time for the camera to take pictures should be selected in the morning or evening according to the local sunshine situation to avoid direct sunlight and reduce interference. Further, an artificial light source (such as a lighting lamp) can be provided on the top wall of the slide rail 2 to irradiate the surface of the photovoltaic panel 1 to ensure uniform light, and at this time the camera takes pictures at night.

[0053] Step 230: The controller 7 identifies stains by comparing the current latest panel image with the reference image, so as to determine whether there are stains on the photovoltaic panel 1; Step 240: If so, the controller 7 marks the area where the stain is located as the target area.

[0054] Specifically, the specific area where the stain is located on the photovoltaic panel 1 can be identified through image comparison, so as to clean the stain.

[0055] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made under the concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A self-driven photovoltaic panel cleaning device, characterized in that, It includes a slide rail (2), a first drive assembly (3), a second drive assembly (4), a cleaning assembly (5) and a controller (7); the controller (7) is communicatively connected to the first drive assembly (3), the second drive assembly (4) and the cleaning assembly (5) respectively; the slide rail (2) is fixedly connected to one side of the photovoltaic panel (1), and the first drive assembly (3) is arranged on the slide rail (2); the second drive assembly (4) is connected to the first drive assembly (3), and the controller (7) is used to control the first drive assembly (3) to drive the second drive assembly (4) to move along the length direction of the slide rail (2); the cleaning assembly (5) is connected to the second drive assembly (4), and the controller (7) is further used to control the second drive assembly (4) to drive the cleaning assembly (5) to move along a direction perpendicular to the length direction of the slide rail (2); the cleaning assembly (5) includes a lifting member and a sweeper (6); the controller (7) is further used to control the lifting member to drive the sweeper (6) to approach or move away from the photovoltaic panel (1); the sweeper (6) is used to clean the stains on the surface of the photovoltaic panel (1).

2. The self-driven photovoltaic panel cleaning device according to claim 1, characterized in that, The slide rail (2) includes a slide rail body, a fixing plate (202) and a fastener (203); the fixing plate (202) is connected to the slide rail body, and the slide rail body is fixedly connected to the photovoltaic panel (1) through the fixing plate (202) and the fastener (203); the slide rail body is provided with a chute (201), and the first drive assembly (3) is arranged in the chute (201).

3. The self-driven photovoltaic panel cleaning device according to claim 2, wherein The first drive assembly (3) includes a first motor (301), a first lead screw (302) and a first movable block (303); the first motor (301) is fixedly arranged at one end of the chute (201), and the output shaft of the first motor (301) is coaxially connected to one end of the first lead screw (302), and the other end of the first lead screw (302) is rotatably connected to the other end of the chute (201); the first movable block (303) is threadedly sleeved on the first lead screw (302) and is slidably arranged in the chute (201); the controller (7) is used to control the start and stop of the first motor (301); the second drive assembly (4) is connected to the first movable block (303).

4. The self-driven photovoltaic panel cleaning device according to claim 3, wherein The second driving component (4) includes a second motor (401), a second lead screw (402), a first guide plate (403), a second guide plate (404) and an end plate; the first movable block (303) is provided with a first installation groove (304); the first guide plate (403) and the second guide plate (404) are both vertically connected to the first movable block (303), and are respectively arranged on both sides of the first installation groove (304) and face each other; one end of the first guide plate (403) away from the first movable block (303) and one end of the second guide plate (404) away from the first movable block (303) are both vertically connected to the end plate; the second motor (401) is fixedly arranged in the first installation groove (304), and the output shaft of the second motor (401) is coaxially connected to one end of the second lead screw (402), and the other end of the second lead screw (402) is rotatably connected to the end plate; the controller (7) is used to control the start and stop of the second motor (401); the cleaning component (5) is threadedly connected to the second lead screw (402) and is slidably arranged between the first guide plate (403) and the second guide plate (404).

5. The self-driven photovoltaic panel cleaning device according to claim 4, wherein, The second lead screw (402) is a bidirectional lead screw, the number of the cleaning components (5) is two, and the second lead screw (402) can drive the two cleaning components (5) to approach or move away from each other.

6. The self-driven photovoltaic panel cleaning device according to claim 4, wherein, The cleaning component (5) further includes a second movable block (501) and a mounting seat (502); the second movable block (501) is threadedly sleeved on the second lead screw (402), and the two outer side walls of the second movable block (501) are respectively slidably attached to and abutted against the first guide plate (403) and the second guide plate (404); the second movable block (501) is provided with a second installation groove (503); the lifting component includes a cylinder (504), the fixed end of the cylinder (504) is connected to the inner top wall of the second installation groove (503), the movable end of the cylinder (504) passes through the bottom wall of the second movable block (501) and is connected to the mounting seat (502); the controller (7) is used to control the start and stop of the cylinder (504); the sweeper (6) is detachably connected to the side of the mounting seat (502) away from the cylinder (504); the sweeper (6) includes a cleaning brush (602) for cleaning the photovoltaic panel (1).

7. The self-driven photovoltaic panel cleaning device according to claim 6, wherein, A mounting box (507) is provided on the top of the mounting base (502). The mounting box (507) passes through the bottom wall of the second movable block (501) and extends into the second mounting groove (503). The sweeper (6) further includes a dust storage box (601). The dust storage box (601) is detachably connected to the mounting base (502). The cleaning brush (602) is arranged on a side of the dust storage box (601) facing away from the mounting base (502). The mounting base (502) is provided with a first communication port (510) communicating with the mounting box (507) in a penetrating manner. The top wall of the dust storage box (601) is provided with a second communication port (603) communicating with the first communication port (510) in a penetrating manner. The bottom wall of the dust storage box (601) is provided with a dust suction port (606) in a through manner. A third motor (508) is arranged in the mounting box (507). The output shaft of the third motor (508) is connected with a fan blade (509). A filter screen (604) is arranged at the second communication port (603). A one-way valve (605) is arranged at the dust suction port (606). The controller (7) is used to control the start and stop of the third motor (508).

8. The self-driven photovoltaic panel cleaning device according to claim 6, characterized in that, First grooves (505) are symmetrically arranged at the upper parts of the opposite sides of the second movable block (501). Second grooves (506) are symmetrically arranged at the lower parts of the opposite sides of the second movable block (501). First convex blocks are arranged at the upper parts of the first guide plate (403) and the second guide plate (404). Second convex blocks are arranged at the lower parts of the first guide plate (403) and the second guide plate (404). The first convex blocks are embedded in the first grooves (505). The second convex blocks are embedded in the second grooves (506).

9. A method for cleaning a photovoltaic panel, characterized in that, Applied to the self-driven photovoltaic panel cleaning device according to any one of claims 1 to 8; a camera is arranged on the first guide plate (403) for collecting an image of the surface of the photovoltaic panel (1); A rain sensor is further arranged on the slide rail (2); the controller (7) is communicatively connected to the camera and the rain sensor respectively; the method includes: The controller (7) divides the plate surface of the photovoltaic panel (1) into a plurality of regions; The controller (7) controls the camera to take a picture of the plate surface of the photovoltaic panel (1) to obtain a plate surface image, performs image recognition on the plate surface image to judge whether there is dirt on the photovoltaic panel (1), and if there is dirt, marks the region where the dirt is located as a target region; The controller (7) judges whether the current weather is rainy through the rain sensor; If so, the controller (7) controls the first motor (301), the second motor (401) and the cylinder (504) to work to clean all regions of the photovoltaic panel (1); If not, the controller (7) controls the first motor (301), the second motor (401) and the cylinder (504) to work to clean the target region, and controls the third motor (508) to work to suck the cleaned dirt into the dust storage box (601).

10. The photovoltaic panel cleaning method according to claim 9, wherein, The controller (7) controls the camera to take pictures of the surface of the photovoltaic panel (1) to obtain a surface image, performs image recognition on the surface image to determine whether there is dirt on the photovoltaic panel (1), and if there is dirt, marks the area where the dirt is located as the target area, including: The controller (7) uses the surface image taken by the camera for the first time after the photovoltaic panel (1) is installed as the reference image; The controller (7) controls the camera to take pictures of the surface of the photovoltaic panel (1) at preset time intervals to obtain multiple surface images; The controller (7) identifies dirt by comparing the current latest surface image with the reference image, thereby determining whether there is dirt on the photovoltaic panel (1); If so, the controller (7) marks the area where the dirt is located as the target area.

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