Surface cleaning device for photovoltaic module

Abstract

The utility model relates to the technical field of photovoltaic module production, and discloses a photovoltaic module surface cleaning device which comprises a cleaning chamber, a conveying mechanism, a cleaning mechanism and a friction roller. The cleaning chamber is provided with a cleaning inlet and a cleaning outlet; the conveying mechanism sequentially penetrates through the cleaning inlet, the cleaning chamber and the cleaning outlet and is used for conveying the photovoltaic module. The cleaning mechanism is arranged in the cleaning chamber and is used for cleaning the photovoltaic module; the friction roller is rotationally connected into the cleaning chamber and located above the conveying mechanism. The rotating direction of the friction roller is opposite to the conveying direction of the conveying mechanism, the friction roller is intermittently in relative friction contact with the cleaned face of the photovoltaic module, and the friction roller drives the photovoltaic module to intermittently decelerate or intermittently retreat towards the side opposite to the conveying direction. According to the utility model, the surface of the photovoltaic module can be thoroughly cleaned, and the stable combination of the photovoltaic antireflection film layer and the photovoltaic module is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic component production, in particular to a surface cleaning device for a photovoltaic component. Background Art

[0002] Photovoltaic anti-reflective coating (ARC) is a thin film technology applied to the surface of photovoltaic modules, which aims to reduce the reflection of sunlight on the surface of glass or other transparent materials, thereby improving the transmittance of sunlight, increasing the absorption of light energy by photovoltaic cells, and thus improving the conversion efficiency of solar cells. In order to improve the utilization rate of sunlight by photovoltaic modules, crystalline silicon photovoltaic modules generally apply one or more layers of photovoltaic anti-reflective coating on the surface of the front panel tempered or heat-strengthened glass to improve the transmittance of light.

[0003] The existing photovoltaic anti-reflection film is usually prepared in a deep processing glass factory. When the photovoltaic anti-reflection film is roll-coated on FTO glass (fluorine-doped tin oxide conductive glass), it is necessary to go through a tempering temperature of 600℃-630℃ to solidify the photovoltaic anti-reflection film. However, the high temperature makes the FTO glass waveform curvature large, and the flatness of the FTO glass directly affects the film formation uniformity of different film layers of the perovskite photovoltaic module, and then affects the power generation efficiency of the thin film battery. If the normal temperature photovoltaic anti-reflection film preparation process is used on FTO glass alone, there is a risk of contaminating the conductive layer of the FTO glass, which will increase the square resistance of the transparent conductive layer, and the pollutants will also cause defects in the perovskite thin film battery. Therefore, it is necessary to roll-coat the photovoltaic anti-reflection film after the perovskite battery is encapsulated, but the photovoltaic module needs to go through multiple processes before rolling the photovoltaic anti-reflection film. After each process, different degrees of pollutants will remain on the surface of the photovoltaic module. For example, after the lamination process is completed, the surface of the photovoltaic module is prone to the appearance of encapsulation glue substances. These pollutants will seriously affect the bonding between the photovoltaic anti-reflection film layer and the surface of the photovoltaic module. Utility Model Content

[0004] In view of this, the utility model provides a surface cleaning device for photovoltaic modules to solve the problem that photovoltaic modules need to go through multiple processes before being roller-coated with a photovoltaic anti-reflection film layer. After each process, varying degrees of pollutants will remain on the surface of the photovoltaic modules, and these pollutants will seriously affect the bonding of the photovoltaic anti-reflection film layer with the surface of the photovoltaic modules.

[0005] The utility model provides a surface cleaning device for photovoltaic components, comprising a cleaning chamber, a conveying mechanism, a cleaning mechanism and a friction roller; the cleaning chamber is provided with a cleaning inlet and a cleaning outlet; the conveying mechanism passes through the cleaning inlet, the cleaning chamber and the cleaning outlet in sequence, and is used to convey photovoltaic components; the cleaning mechanism is arranged in the cleaning chamber and cleans the photovoltaic components; the friction roller is rotatably connected in the cleaning chamber and is located above the conveying mechanism; the rotation direction of the friction roller is opposite to the conveying direction of the conveying mechanism, and the friction roller intermittently contacts with the cleaned surface of the photovoltaic component with friction, and the friction roller drives the photovoltaic component to intermittently decelerate or intermittently retreat toward a side opposite to the conveying direction.

[0006] Beneficial effect: By setting a friction roller to drive the photovoltaic module to intermittently slow down or intermittently retreat toward the side opposite to the conveying direction, it is possible to achieve repeated cleaning of the cleaned surface of the photovoltaic module by the cleaning mechanism, and to ensure that the conveying mechanism continuously conveys the photovoltaic module in the conveying direction, thereby achieving automatic removal of pollutants on the surface of the photovoltaic module, and helping to achieve a firm combination of the photovoltaic anti-reflection film layer and the photovoltaic module in the next process.

[0007] In an optional embodiment, the outer peripheral wall of the friction roller includes a friction portion and a suspended portion distributed along the circumferential direction, and the distance between the friction portion and the rotation axis of the friction roller is greater than the distance between the suspended portion and the rotation axis of the friction roller; when the friction roller is rotating, the friction portion is used to intermittently frictionally contact the cleaned surface of the photovoltaic component, and the suspended portion is always spaced apart from the cleaned surface of the photovoltaic component.

[0008] Beneficial effects: Since the distance between the friction part and the rotation axis of the friction roller is greater than the distance between the suspended part and the rotation axis of the friction roller; when the friction roller is rotating, the friction part is used to intermittently frictionally contact the cleaned surface of the photovoltaic component, thereby driving the photovoltaic component to intermittently decelerate or intermittently retreat toward the side opposite to the conveying direction; the suspended part is always spaced apart from the cleaned surface of the photovoltaic component, and the conveying mechanism can continue to convey the photovoltaic component forward; both the cleaning effect of the photovoltaic component and the forward conveying speed of the photovoltaic component are guaranteed.

[0009] In an optional implementation, an elastomer is provided on at least the friction portion.

[0010] Beneficial effects: By arranging an elastomer on the friction part, the friction force of the friction part can be increased, which helps the friction part to drive the photovoltaic component to intermittently slow down or intermittently retreat toward the side opposite to the conveying direction when the friction roller rotates; since the friction force between the friction part and the cleaned surface of the photovoltaic component is large, it is also helpful to remove pollutants on the cleaned surface of the photovoltaic component; and the arrangement of the elastomer can also achieve flexible contact between the friction part and the photovoltaic component, and in the process of the friction roller rotating to clean the photovoltaic component, the friction part can be prevented from causing scratches and other damage to the cleaned surface of the photovoltaic component, thereby improving the surface quality of the photovoltaic component. At the same time, when the friction roller contacts the upper surface of the photovoltaic component, the elastomer is squeezed and elastically deformed, thereby increasing the friction force, that is, improving the cleaning effect.

[0011] In an optional embodiment, a flushing structure is provided on at least the suspended portion, and the flushing structure flushes the cleaned surface of the photovoltaic component.

[0012] Beneficial effect: The cleaned surface of the photovoltaic module is rinsed by the flushing structure arranged on the suspended part. During the rotation of the friction roller, the friction part and the suspended part are alternately oriented toward the cleaned surface. After the friction part rubs against the upper surface of the photovoltaic module, the position just rubbed and scrubbed can be rinsed promptly and quickly through the flushing structure to prevent stains from remaining and adhering, thereby achieving the friction roller being able to clean the cleaned surface of the photovoltaic module in a timely and targeted manner.

[0013] In an optional embodiment, the flushing structure includes a accommodating cavity opened inside the friction roller and a liquid outlet opened on the wall of the suspended portion, the liquid outlet is connected to the accommodating cavity, and the accommodating cavity is connected to the flushing liquid supply device.

[0014] Beneficial effect: The cleaning liquid is supplied to the containing cavity inside the friction roller through the flushing structure, and the cleaning liquid then flows out from the liquid outlet hole on the wall of the suspended part, so that the friction roller cleans the cleaned surface of the photovoltaic module. The structure is simple and the layout is reasonable.

[0015] In an optional embodiment, the friction roller includes a central rotating shaft, which is a hollow structure with one end being an open end and forming a liquid inlet hole, and the other end being a closed end. The central rotating shaft is rotatably connected to the flushing liquid supply device through the liquid inlet hole, and a plurality of connecting holes that are radially penetrated through the wall of the central rotating shaft and connect to the accommodating cavity are provided.

[0016] Beneficial effects: A hollow central shaft is provided in the friction roller, and a liquid inlet hole is provided at one end of the central shaft, and the central shaft is rotatably connected to the flushing liquid supply device through the liquid inlet hole, thereby realizing that the central shaft drives the friction roller to rotate, and ensuring that the flushing liquid supply device supplies liquid into the central shaft through the liquid inlet hole; a plurality of connecting holes that are radially connected to the accommodating cavity are opened on the wall of the central shaft, thereby realizing the connection between the central shaft and the accommodating cavity, thereby realizing the liquid supply of the flushing liquid supply device to the accommodating cavity, and ensuring the continuous liquid discharge from the liquid outlet hole.

[0017] In an optional embodiment, the friction roller is an elliptical cross-section or spline roller structure, the outer sleeve of the friction roller is provided with an elastic sleeve, and the elastic sleeve is provided with an escape opening corresponding to the liquid outlet.

[0018] Beneficial effects: The friction roller has an elliptical cross-section or a spline-type roller structure, which can achieve a setting in which the distance between the friction part and the rotation axis of the friction roller is greater than the distance between the suspended part and the rotation axis of the friction roller; by arranging an elastic sleeve on the outside of the friction roller, the elastic sleeve forms a number of elastomers on the friction part, the structure is simpler, and the elastic sleeve is provided with avoidance openings corresponding to the liquid outlet holes, which not only realizes the structural setting of the elastic body on the friction part, but also can ensure the normal liquid discharge of the liquid outlet holes of the suspended part; the structural design is reasonable.

[0019] In an optional embodiment, the cleaning mechanism includes a roller brush, which is spaced apart from the friction roller, rotatably connected in the cleaning chamber, and located above the conveying mechanism, for brushing the cleaned surface of the photovoltaic module.

[0020] Beneficial effect: By arranging a roller brush to scrub the cleaned surface of the photovoltaic module, the cleaned surface of the photovoltaic module can be further cleaned, thereby improving the cleaning efficiency of the cleaned surface of the photovoltaic module.

[0021] In an optional embodiment, a scraper assembly is further included, wherein the scraper assembly is arranged at a position close to the cleaning inlet and is spaced apart from the friction roller; the scraper assembly includes an elastic member and a scraper, wherein the scraper is connected to the top plate of the cleaning chamber via the elastic member, and the bottom blade is used to scrape off contaminants on the cleaned surface of the photovoltaic module.

[0022] Beneficial effects: By arranging the scraper assembly at a position close to the cleaning inlet, it is possible to scrape away larger solid contaminants on the cleaned surface of the photovoltaic module, which facilitates the subsequent cleaning of the cleaned surface of the photovoltaic module by the friction roller and the roller brush, thereby improving the cleaning efficiency; and the photovoltaic module is connected to the top plate of the cleaning chamber through an elastic member, so that photovoltaic modules of different thicknesses can be cleaned, and the elastic force generated when the spring is compressed is applied to the scraper, so that the bottom blade of the scraper is against the cleaned surface of the photovoltaic module, which can ensure the scraping away of solid contaminants.

[0023] In an optional embodiment, a partition is provided in the cleaning chamber, and the partition divides the cleaning chamber into a first cleaning chamber and a second cleaning chamber distributed along the transmission direction. A transmission port connecting the first cleaning chamber and the second cleaning chamber and for transmitting the photovoltaic components is opened on the partition. The scraper assembly is arranged in the first cleaning chamber, and the cleaning mechanism and the friction roller are arranged in the second cleaning chamber.

[0024] Beneficial effect: By providing a partition, the cleaning liquid in the second cleaning chamber can be prevented from flowing into the first cleaning chamber, thereby avoiding contamination of the first cleaning chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the related technologies, the drawings required for use in the specific implementation methods or the related technical descriptions will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0026] Figure 1 This is a front view of a cleaning chamber according to an embodiment of the utility model;

[0027] Figure 2 A side view of the rotation direction of the friction roller and the conveying direction of the photovoltaic module according to an embodiment of the utility model;

[0028] Figure 3 It is a cross-sectional view of the friction roller according to an embodiment of the utility model.

[0029] Description of reference numerals:

[0030] 1. Cleaning chamber; 101. Cleaning inlet; 102. Cleaning outlet; 103. Partition; 104. First cleaning chamber; 1041. First liquid storage tank; 1042. First nozzle; 105. Second cleaning chamber; 106. First water reservoir; 1061. First circulation hole; 1062. Second circulation hole; 1063. First isolation net; 1064. First filter net; 107. First solution circulation system; 108. Second solution circulation system; 2. Conveying mechanism; 3. Photovoltaic module; 401. Roller brush; 402. Second liquid storage tank; 403. Second nozzle; 5. Friction roller; 501. Friction part; 502. Suspended part; 503. Accommodating cavity; 504. Liquid outlet; 505. Central rotating shaft; 5051. Liquid inlet; 5052. Connecting hole; 506. Elastic sleeve; 507. Outer roller body; 601. Elastic member; 602. Scraper. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0032] Combine the following Figures 1 to 3 , describing an embodiment of the utility model.

[0033] According to an embodiment of the utility model, a surface cleaning device for a photovoltaic module is provided, comprising a cleaning chamber 1, a conveying mechanism 2, a cleaning mechanism and a friction roller 5; the cleaning chamber 1 is provided with a cleaning inlet 101 and a cleaning outlet 102; the conveying mechanism 2 passes through the cleaning inlet 101, the cleaning chamber 1 and the cleaning outlet 102 in sequence, and is used to convey a photovoltaic module 3; the cleaning mechanism is arranged in the cleaning chamber 1 and cleans the photovoltaic module 3; the friction roller 5 is rotatably connected in the cleaning chamber 1 and is located above the conveying mechanism 2; the rotation direction of the friction roller 5 is opposite to the conveying direction of the conveying mechanism 2, and the friction roller 5 is intermittently in frictional contact with the cleaned surface of the photovoltaic module 3, at least the wall surface of the friction roller 5 at the maximum outer diameter is a non-rigid material, such as rubber, plastic, felt, etc., or the friction roller 5 itself is a non-rigid material, such as a rubber roller, and the friction roller 5 drives the photovoltaic module 3 to intermittently decelerate or intermittently retreat toward the side opposite to the conveying direction.

[0034] During the process of the conveying mechanism 2 conveying and transporting the photovoltaic module 3, the friction roller 5 rotates relative to the upper surface of the photovoltaic module 3, and the movement direction of the friction roller 5 relative to the photovoltaic module 3 is opposite to the transmission movement direction of the photovoltaic module 3, that is, the friction roller 5 and the photovoltaic module 3 produce relative friction movement, so that a wiping effect can be applied to the upper surface of the photovoltaic module 3 to remove stains, thereby improving the cleaning effect. If the friction force between the conveying mechanism 2 and the photovoltaic module 3 is equal to or greater than the friction force between the friction roller 5 and the photovoltaic module 3, the photovoltaic module 3 will slow down slightly; if the friction force between the conveying mechanism 2 and the photovoltaic module 3 is less than the friction force between the friction roller 5 and the photovoltaic module 3, the photovoltaic module 3 will retreat a short distance, and the retreat distance is the circumferential length of the contact between the friction roller 5 and the surface of the photovoltaic module 3.

[0035] By setting the friction roller 5 to drive the photovoltaic module 3 to intermittently slow down or intermittently retreat toward the side opposite to the conveying direction, the cleaning mechanism can repeatedly clean the cleaned surface of the photovoltaic module 3, and ensure that the conveying mechanism 2 continuously conveys the photovoltaic module 3 in the conveying direction, thereby realizing the automatic removal of pollutants on the surface of the photovoltaic module 3, which helps to achieve a stable combination of the photovoltaic anti-reflection film layer and the photovoltaic module 3 in the next process.

[0036] In one embodiment, the outer wall of the friction roller 5 includes a friction portion 501 and a suspended portion 502 distributed along the circumferential direction, and the distance between the friction portion 501 and the rotation axis of the friction roller 5 is greater than the distance between the suspended portion 502 and the rotation axis of the friction roller 5; when the friction roller 5 is rotating, the friction portion 501 is used to intermittently frictionally contact the cleaned surface of the photovoltaic component 3, and the suspended portion 502 is always spaced from the cleaned surface of the photovoltaic component 3.

[0037] Since the distance between the friction part 501 and the rotation axis of the friction roller 5 is greater than the distance between the suspended part 502 and the rotation axis of the friction roller 5; when the friction roller 5 is rotating, the friction part 501 is used to intermittently frictionally contact the cleaned surface of the photovoltaic component 3, thereby driving the photovoltaic component 3 to intermittently decelerate or intermittently retreat toward the side opposite to the conveying direction; the suspended part 502 is always spaced away from the cleaned surface of the photovoltaic component 3, and the conveying mechanism 2 can continue to convey the photovoltaic component 3 forward; both the cleaning effect of the photovoltaic component 3 and the forward conveying speed of the photovoltaic component 3 are guaranteed.

[0038] In one embodiment, at least the friction portion 501 is provided with an elastic body.

[0039] By arranging an elastomer on the friction part 501, the friction force of the friction part 501 can be increased, which helps the friction part 501 to drive the photovoltaic module 3 to intermittently slow down or intermittently retreat toward the side opposite to the conveying direction when the friction roller 5 rotates; since the friction force between the friction part 501 and the cleaned surface of the photovoltaic module 3 is large, it also helps to remove pollutants on the cleaned surface of the photovoltaic module 3; and the arrangement of the elastomer can also achieve flexible contact between the friction part 501 and the photovoltaic module 3, and in the process of the friction roller 5 rotating to clean the photovoltaic module 3, the friction part 501 is prevented from causing scratches and other damage to the cleaned surface of the photovoltaic module 3, thereby improving the surface quality of the photovoltaic module 3. At the same time, when the friction roller 5 contacts the upper surface of the photovoltaic module 3, the elastomer is squeezed and elastically deformed, thereby increasing the friction force, that is, improving the cleaning effect.

[0040] In one embodiment, at least a flushing structure is provided on the suspended portion 502 , and the flushing structure flushes the cleaned surface of the photovoltaic component 3 .

[0041] The cleaned surface of the photovoltaic module 3 is rinsed by the flushing structure arranged on the suspended part 502. During the rotation of the friction roller, the friction part 501 and the suspended part 502 are alternately oriented toward the cleaned surface. After the friction part 501 rubs against the upper surface of the photovoltaic module 3, the position just rubbed and scrubbed can be rinsed promptly and quickly through the flushing structure to prevent stains from remaining and adhering, thereby achieving the friction roller 5 to clean the cleaned surface of the photovoltaic module 3 in a timely and targeted manner.

[0042] In one embodiment, the flushing structure includes a accommodating cavity 503 opened inside the friction roller 5, and a liquid outlet 504 opened on the wall of the suspended portion 502, the liquid outlet 504 is connected to the accommodating cavity 503, and the accommodating cavity 503 is connected to a flushing liquid supply device (not shown in the figure), which is used to provide water source input, such as a water pump.

[0043] The cleaning liquid is supplied to the containing cavity 503 inside the friction roller 5 through the flushing structure, and the cleaning liquid then flows out from the liquid outlet 504 on the wall of the suspended part 502, so that the friction roller 5 cleans the cleaned surface of the photovoltaic module 3. The structure is simple and the layout is reasonable.

[0044] In one embodiment, the friction roller 5 includes a central rotating shaft 505, and the central rotating shaft 505 is a hollow structure, one end of which is an open end and forms a liquid inlet hole 5051, and the other end is a closed end. The central rotating shaft 505 is rotatably connected to the flushing liquid supply device through the liquid inlet hole 5051, and a plurality of connecting holes 5052 that are connected to the accommodating cavity 503 are radially opened on the wall of the central rotating shaft 505.

[0045] A hollow central shaft 505 is provided in the friction roller 5, and a liquid inlet hole 5051 is provided at one end of the central shaft 505. The central shaft 505 is rotatably connected to the flushing liquid supply device through the liquid inlet hole 5051, thereby realizing that the central shaft 505 drives the friction roller 5 to rotate, and ensuring that the flushing liquid supply device supplies liquid into the central shaft 505 through the liquid inlet hole 5051; a plurality of connecting holes 5052 are radially opened on the wall of the central shaft 505 to connect with the accommodating cavity 503, thereby realizing the connection between the central shaft 505 and the accommodating cavity 503, thereby realizing the liquid supply of the flushing liquid supply device to the accommodating cavity 503, and ensuring the continuous liquid discharge from the liquid outlet hole 504.

[0046] In an optional embodiment, the friction roller 5 is an elliptical cross-section or spline roller structure, the outer sleeve of the friction roller 5 is provided with an elastic sleeve 506, and the elastic sleeve 506 is provided with an avoidance opening corresponding to the liquid outlet 504, wherein the diameter of the avoidance opening is not less than the diameter of the liquid outlet 504.

[0047] The friction roller 5 is an elliptical cross-section or spline roller structure, which can achieve a setting in which the distance between the friction part 501 and the rotation axis of the friction roller 5 is greater than the distance between the suspended part 502 and the rotation axis of the friction roller 5; by arranging an elastic sleeve 506 on the outside of the friction roller 5, the elastic sleeve 506 forms a plurality of elastomers on the friction part 501, the structure is simpler, and an avoidance opening corresponding to the liquid outlet 504 is opened on the elastic sleeve 506, which not only realizes the structural setting of the elastic body on the friction part 501, but also can ensure the normal liquid discharge of the liquid outlet 504 of the suspended part 502; its structural design is reasonable.

[0048] In a specific embodiment, the friction roller 5 further includes an outer roller body 507 , which is sleeved on the outer circumference of the central shaft 505 and forms the accommodating cavity 503 with the central shaft 505 . Both ends of the central shaft 505 protrude from the outer roller body 507 .

[0049] Specifically, a plurality of rows of liquid hole groups are sequentially arranged at intervals along the circumference of the friction roller 5 ; each row of liquid hole groups is sequentially arranged at intervals along the axial direction of the friction roller 5 .

[0050] In a specific embodiment, the flushing fluid supply device is a high-pressure fluid supply device.

[0051] In a specific embodiment, the elastic sleeve 506 can be made of materials such as sponge or rubber.

[0052] In a specific embodiment, Figure 3 As shown, the outer peripheral surface of the friction roller 5 in the vertical direction is the friction portion 501 , and the outer peripheral surface in the horizontal direction is the suspended portion 502 .

[0053] Preferably, the difference in distance between the first cleaning surface and the second cleaning surface and the axis of the friction roller 5 is less than or equal to the thickness of the elastic sleeve 506; and the distance between the cleaned surface of the photovoltaic module 3 and the axis of the friction roller 5 is equal to the sum of the distance between the second cleaning surface and the axis of the friction roller 5 and the thickness of the elastic sleeve 506. When the friction roller 5 rotates until the friction portion 501 abuts against the cleaned surface of the photovoltaic module 3, the elastic sleeve 506 is squeezed, increasing the friction force with the cleaned surface of the photovoltaic module 3, driving the photovoltaic module 3 to retreat; when the friction roller 5 rotates until the suspended portion 502 is located above the cleaned surface of the photovoltaic module 3, the outer surface of the elastic sleeve 506 contacts the cleaned surface of the photovoltaic module 3, and can be used to clean the cleaned surface of the photovoltaic module 3 being transported forward.

[0054] In one embodiment, the cleaning mechanism includes a roller brush 401 , which is spaced apart from the friction roller 5 , rotatably connected in the cleaning chamber 1 , and located above the conveying mechanism 2 , for brushing the cleaned surface of the photovoltaic module 3 .

[0055] By providing the roller brush 401 to scrub the cleaned surface of the photovoltaic module 3 , the cleaned surface of the photovoltaic module 3 can be further cleaned, thereby improving the cleaning efficiency of the cleaned surface of the photovoltaic module 3 .

[0056] In a specific embodiment, a plurality of friction rollers 5 and a plurality of roller brushes 401 are provided, and the plurality of roller brushes 401 and the plurality of friction rollers 5 are sequentially arranged at intervals along the conveying direction of the conveying mechanism 2 .

[0057] Specifically, the roller brush 401 is made of nylon material, which has strong wear resistance and high softness, and can prevent the roller brush 401 from causing scratches and other damage to the cleaned surface of the photovoltaic module 3, thereby improving the surface quality of the photovoltaic module 3.

[0058] In one embodiment, a scraper assembly is further included, which is arranged at a position close to the cleaning inlet 101 and spaced apart from the friction roller 5; the scraper assembly includes an elastic member 601 and a scraper 602, and the scraper 602 is connected to the top plate of the cleaning chamber 1 through the elastic member 601, and the bottom blade is used to scrape off contaminants on the cleaned surface of the photovoltaic module 3.

[0059] By arranging the scraper assembly at a position close to the cleaning inlet 101, it is possible to scrape away larger solid contaminants on the cleaned surface of the photovoltaic module 3, which facilitates the subsequent cleaning of the cleaned surface of the photovoltaic module 3 by the friction roller 5 and the roller brush 401, thereby improving the cleaning efficiency; and the photovoltaic module 3 is connected to the top plate of the cleaning chamber 1 through the elastic member 601, so that the photovoltaic modules 3 of different thicknesses can be cleaned, and the elastic force generated when the spring is compressed is applied to the scraper 602, so that the bottom blade of the scraper 602 is pressed against the cleaned surface of the photovoltaic module 3, which can ensure the scraping away of solid contaminants.

[0060] In a specific embodiment, the bottom blade of the scraper 602 is inclined toward the side where the cleaning inlet 101 is located. This facilitates the transportation of the photovoltaic component 3 from the cleaning inlet 101 to the cleaning outlet 102, thereby facilitating the scraping of solid contaminants on the cleaned surface of the photovoltaic component 3.

[0061] Specifically, the angle between the scraper 602 and the normal of the photovoltaic module 3 is in the range of 20-60°.

[0062] Specifically, the elastic member 601 is a spring or a rubber pad.

[0063] In one embodiment, a partition 103 is provided in the cleaning chamber 1, and the partition 103 divides the cleaning chamber 1 into a first cleaning chamber 104 and a second cleaning chamber 105 distributed along the transmission direction. The partition 103 is provided with a transmission port connecting the first cleaning chamber 104 and the second cleaning chamber 105 and for transmitting the photovoltaic component 3. The scraper assembly is arranged in the first cleaning chamber 104, and the cleaning mechanism and the friction roller 5 are arranged in the second cleaning chamber 105.

[0064] By providing the partition 103 , the cleaning liquid in the second cleaning chamber 105 can be prevented from flowing into the first cleaning chamber 104 , thereby avoiding contamination of the first cleaning chamber 104 .

[0065] In one embodiment, the first cleaning chamber 104 includes a first liquid storage tank 1041 and a first nozzle 1042; the first liquid storage tank 1041 is located above the scraper assembly and is fixedly connected to the top plate of the cleaning chamber 1; the first nozzle 1042 is located on the side of the scraper assembly close to the cleaning inlet 101, is arranged adjacent to the scraper assembly, is fixed to the bottom of the first liquid storage tank 1041, and is connected to the first liquid storage tank 1041, and is used to spray the cleaned surface of the photovoltaic component 3.

[0066] By arranging the first nozzle 1042 on the side close to the cleaning inlet 101, the contaminants on the cleaned surface of the photovoltaic component 3 are moistened and softened, which facilitates the scraper assembly to scrape away the contaminants on the cleaned surface of the photovoltaic component 3 and also facilitates the flushing of the contaminants scraped away from the cleaned surface of the photovoltaic component 3.

[0067] In a specific embodiment, since the bottom blade of the scraper 602 is inclined toward the side where the cleaning inlet 101 is located, the first nozzle 1042 is arranged on the side close to the cleaning inlet 101 and adjacent to the scraper assembly. Therefore, the liquid of the first nozzle 1042 can also be sprayed onto the bottom blade of the scraper 602, so as to flush the solid contaminants on the bottom blade of the scraper 602, thereby avoiding the actual scraping effect from being deteriorated due to excessive accumulation of solid contaminants on the bottom blade.

[0068] Specifically, the liquid in the first liquid storage tank 1041 is a cleaning liquid such as glass cleaning agent. The first nozzle 1042 is a high-pressure nozzle.

[0069] In one embodiment, the cleaning mechanism also includes a second liquid storage tank 402 and a second nozzle 403; the second liquid storage tank 402 is located above the roller brush 401 and is fixedly connected to the top plate of the cleaning chamber 1; the second nozzle 403 is located above the roller brush 401, fixed to the bottom of the second liquid storage tank 402, and is connected to the second liquid storage tank 402, for spraying the cleaned surface of the photovoltaic component 3.

[0070] By arranging a second liquid storage tank 402 and a second nozzle 403 to spray cleaning liquid above the roller brush 401, the roller brush 401 can be lubricated to prevent the roller brush 401 from scratching the cleaned surface of the photovoltaic component 3. The cleaning effect of the roller brush 401 on the cleaned surface of the photovoltaic component 3 can also be enhanced, and the pollutants remaining on the cleaned surface of the photovoltaic component 3 can also be flushed.

[0071] Specifically, the liquid in the second liquid storage tank 402 is a glue removal liquid. The second nozzle 403 is a high-pressure nozzle.

[0072] In one embodiment, a first water reservoir 106, a first solution circulation system 107 and a second solution circulation system 108 are further provided in the cleaning chamber 1; the first water reservoir 106 is located below the conveying mechanism 2, and is provided with a first flow hole 1061 and a second flow hole 1062; one end of the first solution circulation system 107 is connected to the first flow hole 1061, and the other end is connected to the first liquid storage tank 1041; one end of the second solution circulation system 108 is connected to the second flow hole 1062, and the other end is connected to the second liquid storage tank 402.

[0073] By setting up the first water reservoir 106, the liquid sprayed by the first nozzle 1042 and the second nozzle 403 can be recovered; by setting up the first solution circulation system 107, the liquid in the first water reservoir 106 and the liquid in the first liquid storage tank 1041 can be recycled; by setting up the second solution circulation system 108, the liquid in the first water reservoir 106 and the liquid in the second liquid storage tank 402 can be recycled; by setting up the first water reservoir 106, the first solution circulation system 107 and the second solution circulation system 108, the recovery and recycling of liquid can be achieved, thereby reducing waste of resources and lowering production costs.

[0074] The partition 103 divides the cleaning chamber 1 into a first cleaning chamber 104 and a second cleaning chamber 105 distributed along the transmission direction, thereby dividing the first water reservoir 106 into two parts that are not connected to each other, thereby avoiding mixing of liquids flowing out of the first liquid storage tank 1041 and the second liquid storage tank 402. The first flow hole 1061 and the second flow hole 1062 are respectively located on both sides of the partition 103, so as to facilitate the recovery and recycling of the liquid in the first liquid storage tank 1041 and the liquid in the second liquid storage tank 402.

[0075] In one embodiment, the first water reservoir 106 further includes a first isolation net 1063 , which is located above the first circulation hole 1061 and the second circulation hole 1062 , parallel to the bottom of the first water reservoir 106 , and abuts against the first water reservoir 106 on all sides.

[0076] By providing the first isolation net 1063 , solid pollutants dropped during the cleaning of the photovoltaic module 3 can be collected, the cleanliness of the liquid in the first water reservoir 106 can be maintained, and the liquid in the first water reservoir 106 can be recycled.

[0077] In one embodiment, the first water reservoir 106 further includes two first filter screens 1064 , which are respectively fixed at the first circulation hole 1061 and the second circulation hole 1062 , and the cross-sectional areas of the first circulation hole 1061 and the second circulation hole 1062 are both smaller than the area of ​​the first filter screen 1064 .

[0078] By providing the first filter 1064, solid pollutants in the first water reservoir 106 can be filtered, the cleanliness of the liquid entering the first solution circulation system 107 and the second solution circulation system 108 is maintained, and the recycling of the liquid is achieved.

[0079] In a specific embodiment, the surface cleaning device of the photovoltaic module also includes a first cleaning chamber; the first cleaning chamber is located on the side where the cleaning outlet 102 of the cleaning chamber 1 is located, and is provided with a first entrance and a first outlet. After the photovoltaic module 3 is degummed by the cleaning chamber 1, the conveying mechanism 2 conveys the photovoltaic module 3 through the first entrance into the first cleaning chamber; the friction roller 5 and the roller brush 401 are rotatably connected in the first cleaning chamber; the first cleaning chamber also includes a third liquid storage tank, a third nozzle, a second water reservoir and a third solution circulation system; the third liquid storage tank is fixedly connected to the top plate of the first cleaning chamber; the third nozzle is fixed at the bottom of the third liquid storage tank, and is connected to the third liquid storage tank, and is used to spray the cleaned surface of the photovoltaic module 3, and the sprayed liquid cooperates with the friction roller 5 and the roller brush 401 to further remove the cleaned surface of the photovoltaic module 3. The second water reservoir is arranged in the first cleaning room, below the conveying mechanism 2, and is provided with a third flow hole; one end of the third solution circulation system is connected to the third flow hole, and the other end is connected to the third liquid storage tank; the second water reservoir also includes a second isolation net and a second filter net, the second isolation net is located above the third flow hole, parallel to the bottom of the second water reservoir, and is in contact with the second water reservoir on all sides, which can receive solid pollutants dropped during the cleaning of the photovoltaic module 3, and maintain the cleanliness of the liquid in the second water reservoir; the second filter net is fixed at the third flow hole, and the cross-sectional area of ​​the third flow hole is smaller than the area of ​​the second filter net, and the second filter net can filter the solid pollutants in the second water reservoir, maintain the cleanliness of the liquid entering the third solution circulation system, and realize the recycling of the liquid. Specifically, the liquid in the third liquid storage tank is a cleaning liquid such as a glass cleaning agent. The third nozzle is a high-pressure nozzle.

[0080] In a specific embodiment, the surface cleaning device of the photovoltaic module also includes a second cleaning chamber, which is located on the side where the first outlet of the first cleaning chamber is located, and is provided with a second inlet and a second outlet. After the photovoltaic module 3 is cleaned by the first cleaning chamber, the conveying mechanism 2 conveys the photovoltaic module 3 through the first outlet and the second inlet in sequence into the second cleaning chamber; the roller brush 401 is rotatably connected in the second cleaning chamber; the second cleaning chamber also includes a fourth liquid storage tank, a fourth nozzle and a third water reservoir; the fourth liquid storage tank is fixedly connected to the top plate of the first cleaning chamber, and is filled with high-purity water; the fourth nozzle is fixed at the bottom of the fourth liquid storage tank and is connected to the fourth liquid storage tank, and the fourth nozzle is a high-pressure nozzle, which sprays high-purity water to the cleaned surface of the photovoltaic module 3 through high pressure, and cooperates with the roller brush 401 to remove the glass cleaning agent remaining on the photovoltaic module 3 in the first cleaning chamber; the third water reservoir is arranged in the second cleaning chamber, located below the conveying mechanism 2, and is used to recover the liquid flowing down after flushing the photovoltaic module 3.

[0081] In a specific embodiment, the surface cleaning device of the photovoltaic module also includes an air drying chamber, which is located on the side where the second outlet of the second cleaning chamber is located, and is provided with a third inlet and a third outlet. After the photovoltaic module 3 is cleaned by the second cleaning chamber, the conveying mechanism 2 conveys the photovoltaic module 3 to enter the air drying chamber through the second outlet and the third inlet in sequence; the top plate of the air drying chamber is provided with a plurality of wind knives in sequence along the conveying direction of the conveying mechanism 2, and the air outlet of the wind knife is inclined toward the side where the third inlet is located, and the moisture on the cleaned surface of the photovoltaic module 3 is blown dry under the strong wind of the wind knife, and then the conveying mechanism 2 conveys the photovoltaic module 3 through the third outlet to enter the next process. Specifically, the air drying chamber also includes a fourth water reservoir, which is arranged in the air drying chamber, below the conveying mechanism 2, and is used to recover the liquid remaining in the photovoltaic module 3 in the second cleaning chamber.

[0082] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A surface cleaning device for a photovoltaic module, characterized in that: include: A cleaning chamber (1) is provided with a cleaning inlet (101) and a cleaning outlet (102); A conveying mechanism (2) passes through the cleaning inlet (101), the cleaning chamber (1) and the cleaning outlet (102) in sequence, and is used for conveying photovoltaic modules (3); A cleaning mechanism, arranged in the cleaning chamber (1) and used to clean the photovoltaic module (3); A friction roller (5) is rotatably connected in the cleaning chamber (1) and is located above the conveying mechanism (2); the rotation direction of the friction roller (5) is opposite to the conveying direction of the conveying mechanism (2), and the friction roller (5) intermittently contacts the cleaned surface of the photovoltaic module (3) with friction, and the friction roller (5) drives the photovoltaic module (3) to intermittently decelerate or intermittently retreat toward a side opposite to the conveying direction.

2. The surface cleaning device of a photovoltaic module according to claim 1, characterized in that: The outer peripheral wall of the friction roller (5) comprises a friction portion (501) and a suspended portion (502) distributed along the circumferential direction, and the distance between the friction portion (501) and the rotation axis of the friction roller (5) is greater than the distance between the suspended portion (502) and the rotation axis of the friction roller (5); When the friction roller (5) is in a rotating state, the friction portion (501) is used to intermittently frictionally contact the cleaned surface of the photovoltaic component (3), and the suspended portion (502) is always spaced apart from the cleaned surface of the photovoltaic component (3).

3. The surface cleaning device of a photovoltaic module according to claim 2, characterized in that: At least the friction part (501) is provided with an elastic body.

4. The surface cleaning device of a photovoltaic module according to claim 3, characterized in that: At least a flushing structure is provided on the suspended portion (502), and the flushing structure flushes the cleaned surface of the photovoltaic component (3).

5. The surface cleaning device of a photovoltaic module according to claim 4, characterized in that: The flushing structure comprises a receiving cavity (503) provided inside the friction roller (5), and a liquid outlet hole (504) provided on the wall of the suspended portion (502); the liquid outlet hole (504) is connected to the receiving cavity (503), and the receiving cavity (503) is connected to the flushing liquid supply device.

6. The surface cleaning device of a photovoltaic module according to claim 5, characterized in that: The friction roller (5) comprises a central rotating shaft (505), which is a hollow structure, one end of which is an open end and forms a liquid inlet hole (5051), and the other end is a closed end. The central rotating shaft (505) is rotatably connected to the flushing liquid supply device through the liquid inlet hole (5051), and a plurality of connecting holes (5052) connected to the accommodating cavity (503) are radially penetrated on the wall of the central rotating shaft (505).

7. The surface cleaning device of a photovoltaic module according to claim 5 or 6, characterized in that: The friction roller (5) is a roller body structure with an elliptical cross-section or a spline type. The outer portion of the friction roller (5) is provided with an elastic sleeve (506), and the elastic sleeve (506) is provided with an escape opening corresponding to the liquid outlet hole (504).

8. The surface cleaning device of a photovoltaic module according to any one of claims 1 to 6, characterized in that: The cleaning mechanism comprises a roller brush (401), which is spaced apart from the friction roller (5), rotatably connected in the cleaning chamber (1), located above the conveying mechanism (2), and used for brushing the cleaned surface of the photovoltaic module (3).

9. The surface cleaning device of a photovoltaic module according to any one of claims 1 to 6, characterized in that: The invention also comprises a scraper assembly, wherein the scraper assembly is arranged at a position close to the cleaning inlet (101) and is spaced apart from the friction roller (5); the scraper assembly comprises an elastic member (601) and a scraper (602), wherein the scraper (602) is connected to the top plate of the cleaning chamber (1) via the elastic member (601), and the bottom blade is used to scrape off pollutants on the cleaned surface of the photovoltaic module (3).

10. The surface cleaning device of a photovoltaic module according to claim 9, characterized in that: A partition (103) is arranged in the cleaning chamber (1), and the partition (103) divides the cleaning chamber (1) into a first cleaning chamber (104) and a second cleaning chamber (105) distributed along the transmission direction. The partition (103) is provided with a transmission port that connects the first cleaning chamber (104) and the second cleaning chamber (105) and is used for the transmission of the photovoltaic module (3). The scraper assembly is arranged in the first cleaning chamber (104), and the cleaning mechanism and the friction roller (5) are arranged in the second cleaning chamber (105).

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