Self-cleaning photovoltaic panel system and working method

Abstract

The invention provides a self-cleaning photovoltaic panel system and a working method, a photovoltaic panel I and a photovoltaic panel II which are adjacently arranged, and the self-cleaning photovoltaic panel system is characterized in that a left driver and a right driver are respectively arranged on the left and right sides of the photovoltaic panel I and the photovoltaic panel II, and the left driver comprises a supporting wheel set I and a supporting wheel set II which are in rolling fit along the circumferential direction of the left driver; the right driver comprises a third supporting wheel set and a fourth supporting wheel set which are in rolling fit in the circumferential direction of the right driver, the first supporting wheel set and the third supporting wheel set are connected with the left side wall and the right side wall of the first photovoltaic panel respectively, and the second supporting wheel set and the fourth supporting wheel set are connected with the left side wall and the right side wall of the second photovoltaic panel respectively. The back surfaces of the photovoltaic panel I and the photovoltaic panel II are respectively provided with a bristle group; when the first photovoltaic panel and the second photovoltaic panel move in the circumferential direction of the left driver and the right driver, the bristles on the photovoltaic panels are suitable for cleaning the front faces of each other. The upper surfaces of the photovoltaic panels can be cleaned by the brushes of the adjacent photovoltaic panels, and the photovoltaic panel cleaning device is simpler in structure and higher in reliability.

Description

Technical Field

[0001] The invention belongs to the field of photovoltaic power generation, and in particular relates to a self-cleaning photovoltaic panel system and a working method. Background Art

[0002] The existing solar photovoltaic panels installed in the wilderness are generally installed on the ground with a bracket tilted at a set angle to the ground. Since the photovoltaic panel is not perpendicular to the ground and the wind in the wilderness is strong, the surface of the photovoltaic panel is particularly prone to dust, especially when the photovoltaic panel is installed in a place with strong wind and sand, which affects the light-receiving performance of the photovoltaic panel. In the prior art, various cleaning robots or cleaning carts are generally used to clean the upper surface of the photovoltaic panel from time to time to remove dust and sand on the upper surface. However, the cleaning robot or cleaning cart needs to be installed on the upper side of the photovoltaic panel, walking or sliding on the surface of different photovoltaic panels, and even crossing adjacent photovoltaic panels to complete the cleaning of the surface of all photovoltaic panels in the entire area. Its structure is complex and occupies the installation space of the photovoltaic panel. At the same time, in order to match its structure, it is necessary to use photovoltaic panels of customized size or shape and a special photovoltaic panel bracket base, which increases the procurement cost of the photovoltaic panel and the bracket base, which is not conducive to its large-scale deployment. Some cleaning robots or cleaning carts use a spraying method to clean photovoltaic panels. Although the cleaning effect is better, the water source problem is difficult to solve in water-scarce and arid areas in the wilderness, and regular manual water replenishment is costly and unrealistic. Summary of the invention

[0003] 1. Technical issues to be solved

[0004] In view of the above technical problems, the purpose of the present invention is to provide a self-cleaning photovoltaic panel system and working method, which can use the brushes provided by adjacent photovoltaic panels to clean their upper surfaces, and has a simpler structure and higher reliability.

[0005] (II) Technical solution

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] The present invention provides a self-cleaning photovoltaic panel system, which comprises: a photovoltaic panel 1 and a photovoltaic panel 2 arranged adjacent to each other, characterized in that: a left driver and a right driver are respectively arranged on the left and right sides of the photovoltaic panel 1 and the photovoltaic panel 2, the left driver comprises a support wheel group 1 and a support wheel group 2 which are matched with each other in a rolling direction along the circumference thereof, the right driver comprises a support wheel group 3 and a support wheel group 4 which are matched with each other in a rolling direction along the circumference thereof, the support wheel group 1 and the support wheel group 3 are respectively connected to the left and right side walls of the photovoltaic panel 1, the support wheel group 2 and the support wheel group 4 are respectively connected to the left and right side walls of the photovoltaic panel 2; a brush group is respectively arranged on the back side of the photovoltaic panel 1 and the photovoltaic panel 2; when the photovoltaic panel 1 and the photovoltaic panel 2 move circumferentially along the left and right drivers, the brushes on each photovoltaic panel are suitable for cleaning the front side of each other.

[0008] The left drive includes a fixed support plate 1, and support wheel group 1 and support wheel group 2 are respectively composed of rollers and rotating shafts that can rotate relative to each other, and each roller thereon is suitable for rolling along the circumferential edge of support plate 1, and each rotating shaft thereon is respectively connected to the corresponding photovoltaic panel 1 and photovoltaic panel 2; the right drive is mirror-symmetrical to the left drive, and includes a fixed support plate 2, and support wheel group 3 and support wheel group 4 are also composed of the rollers and rotating shafts, and each roller thereon is suitable for rolling along the circumferential edge of support plate 2, and each rotating shaft thereon is respectively connected to the corresponding photovoltaic panel 1 and photovoltaic panel 2.

[0009] The left driver includes a limiting device 1 for limiting the position of its roller, and the limiting device 1 includes a left outer guard plate and a left inner guard plate arranged on the left and right sides of the support plate 1, an upper connecting cover 1 arranged on the upper side of the support plate 1 and a left guide strip 1 therein, a lower connecting cover 1 arranged on the lower side of the support plate and a left guide strip 2 therein, a rear connecting cover 1 arranged on the rear side of the support plate 1 and a rear stopper 1 therein, and a front connecting cover 1 arranged on the front side of the support plate 1 and a front stopper 1 therein; the left outer guard plate is respectively connected to the upper connecting cover 1, the lower connecting cover 1, The rear connecting cover 1 and the front connecting cover 1 are fixedly connected and the clearances are matched; the left inner guard plate is respectively provided with gaps with the left guide bar 1, the left guide bar 2, the rear block 1 and the front block 1, the width of the gap is larger than the diameter of the rotating shaft and smaller than the diameter of the roller, and the left guide bar 1, the left guide bar 2, the rear block 1 and the front block 1 are also provided at adjacent parts, and the diameter of the gap is smaller than the diameter of the roller; the right drive includes a limiting device 2 for limiting the roller thereof, and the limiting device 2 is arranged in a mirror image with the limiting device 1.

[0010] The left driver includes a driving device 1 for driving its roller to roll; the driving device 1 includes a plurality of left driving wheel groups, which are respectively arranged on the left outer guard plate adjacent to the left guide bar 1, the left guide bar 2, the rear block 1, and the front block 1; the left driving wheel group includes a left telescopic cylinder connected to the left outer guard plate, the left telescopic rod is slidably fitted in the left telescopic cylinder, and the side wall of the exposed part of the left telescopic rod adjacent to the roller is rotatably fitted with a left guide wheel and a left driving wheel that do not interfere with the movement of the roller, the axes of the two are parallel to each other and there is a set gap between the two, and one side of the left driving wheel is provided with a left motor connected to the transmission thereof; the right driver includes a driving device 2 for driving its roller to roll, and the driving device 2 is arranged in a mirror image with the driving device 1; conveyor belts are respectively passed through the guide wheels and driving wheels of the left and right driving devices, and the conveyor belts are suitable for pressing against the corresponding rollers with a set pressure.

[0011] The conveyor belt is threaded through the inner side of the upper connecting cover 1 in the limiting device 1 and is slidably supported on the top of the left outer guard plate and the left guiding strip 1, threaded through the inner side of the lower connecting cover 1 and is slidably supported on the bottom of the left outer guard plate and the left guiding strip 2, threaded through the inner side of the rear connecting cover 1 and is slidably supported on the rear part of the left outer guard plate and the rear stop block 1, and threaded through the inner side of the front connecting cover 1 and is slidably supported on the front part of the left outer guard plate and the front stop block 1; the conveyor belt is threaded through the limiting device 2 in the same arrangement; when the rollers roll along the circumferential edges of the support plate 1 and the support plate 2, the rim of the roller extends beyond the contact edges of each limiting device for supporting the conveyor belt and is adapted to be pressed and fitted with the conveyor belt.

[0012] Limiting grooves matching the rims of the rollers are respectively provided on the front and rear side walls of the support plate 1 and the support plate 2. When each roller is located in the limiting groove, the first photovoltaic panel and the second photovoltaic panel are adapted to be flush with each other.

[0013] The present invention also provides a working method of a self-cleaning photovoltaic panel system, which is characterized by including:

[0014] a. Photovoltaic panel power generation state: Each driving device drives the corresponding conveyor belt to move, the conveyor belt drives the corresponding roller to move, and the rollers of the left and right drivers synchronously roll along the circumferential edges of the corresponding support plates to the corresponding limiting grooves. The first photovoltaic panel and the second photovoltaic panel are flush with each other and receive sunlight to enter the power generation state;

[0015] b. Photovoltaic panel cleaning state: Each driving device drives the corresponding conveyor belt to move, the conveyor belt drives the corresponding roller to move, and the rollers of the left and right drivers synchronously roll along the circumferential edges of the corresponding support plates. The first photovoltaic panel and the second photovoltaic panel move relative to each other in a stacked manner, and the bristles at the bottom of the upper photovoltaic panel clean the front surface of the other photovoltaic panel.

[0016] (III) Beneficial effects

[0017] The present invention provides a self-cleaning photovoltaic panel system and a working method, which have the following beneficial effects:

[0018] (1) In the self-cleaning photovoltaic panel system of the present invention, the first photovoltaic panel and the second photovoltaic panel are driven to move relative to each other by the support wheel set 1 and the support wheel set 2 of the left driver and the support wheel set 3 and the support wheel set 4 of the right driver, so as to clean the dust on the top of each other by using the bristle groups at their bottoms; the top surfaces of each photovoltaic panel can be cleaned without changing the original main structure and size of the photovoltaic panel; there is no need to use a cleaning robot or a cleaning cart additionally, reducing the later use and maintenance costs; the structure of the present invention is simpler and more compact, improving the reliability in the wild sand and dust environment.

[0019] (2) The rollers, the rotating shafts that can rotate relative to each other are used to connect with each photovoltaic panel, and the rollers roll along the circumferential edges of the corresponding support plates, so as to realize the relative movement between the first photovoltaic panel and the second photovoltaic panel. The rollers do not require lubricating oil for lubrication, and in a sandy environment, it will not affect the rolling process of the rollers around the support plates.

[0020] (3) The first limiting device and the second limiting device are used to limit the corresponding rollers respectively, preventing the rollers from detaching from the circumferential edges of the support plates where they are located. Compared with other limiting methods, the wind resistance of the self-cleaning photovoltaic panel system is improved, and the external force is diffused to the rollers and the limiting devices, preventing the external force from affecting the photovoltaic panel body, so that it is applicable to environments with strong wind and variable wind directions. At the same time, the gaps reserved in each limiting device can, while maintaining the above-mentioned limiting effect, also allow the rotating shafts to pass through the limiting devices and connect with the corresponding photovoltaic panels, thereby preventing movement interference between the limiting devices and the rotating shafts during the rolling process of the rollers.

[0021] (4) Left and right drive wheel sets are arranged on the outer protection plates at the gaps between each guiding strip and each front and rear stop block to drive the conveyor belt. The conveyor belt drives the above-mentioned rollers. The friction between the conveyor belt and the rollers can be used to prevent the rollers from slipping due to sand and dust when rolling along the circumferential edges of the support plates, and ensure that the rollers on the same driver can roll synchronously, maintaining the consistency of the pace and preventing collision between the two photovoltaic panels. The telescopic property of the telescopic rod is used to adjust the tension of the conveyor belt and the pressure between the conveyor belt and the rollers, so as to adjust the friction between the conveyor belt and the rollers, which is beneficial to maintaining the normal rolling of the rollers in sandy weather. The motor is used to drive the guiding wheels and the drive wheels to work, and the electricity generated by the photovoltaic panels can be used to work, thus realizing the unmanned and automated control of the rollers; at the same time, the characteristics of motor speed regulation and direction adjustment are used to adjust the running speed and direction of the conveyor belt, so as to adjust the cleaning sequence and cleaning intensity of the brush group on the surface of the photovoltaic panel, such as cleaning from top to bottom or from bottom to top. The faster the relative movement speed between the photovoltaic panels, the greater the cleaning intensity.

[0022] (5) The corresponding components on the first limiting device and the second limiting device are used to support and limit the conveyor belt, which can not only protect the conveyor belt, reduce the exposed parts irradiated by sunlight and eroded by wind and sand, extend its service life, but also prevent the conveyor belt from falling off the driver where it is located in an environment with strong wind.

[0023] (6) The limiting groove and the pressure of the conveyor belt on the rollers are used in cooperation to enhance the positioning effect on the rollers, so as to keep the first photovoltaic panel and the second photovoltaic panel in a flat power generation state and improve its wind resistance.

[0024] (7) In the present invention, when the first photovoltaic panel and the second photovoltaic panel are in the power generation state, they remain flush with each other and do not block sunlight from each other. In this state, the two photovoltaic panels face sunlight at an inclination angle set relative to the horizontal plane, not only receiving sunlight for power generation, but also using this inclination angle to prevent dust from accumulating on the front side of the photovoltaic panel facing upward. In the cleaning state of the photovoltaic panel, the two photovoltaic panels can move relative to each other in a stacked manner under the drive of each conveyor belt, so that the bristles at their respective bottoms can sweep across the upper surface of the other, to clean the dust on the upper surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is the front axonometric view of the self-cleaning photovoltaic panel system of the present invention;

[0026] Figure 2 is the back axonometric Figure 1 ;

[0027] Figure 3 is the back axonometric Figure 2 ;

[0028] Figure 4 is the axonometric of the driver of the present invention Figure 1 ;

[0029] Figure 5 is the axonometric of the driver of the present invention Figure 2 ;

[0030] Figure 6 is the exploded view of the driver of the present invention;

[0031] Figure 7 is the top view of the self-cleaning photovoltaic panel system of the present invention;

[0032] Figure 8 of the present invention Figure 7 sectional view taken along the direction A-A;

[0033] Figure 9 is the schematic diagram of the upper and lower connecting covers of the left driver of the present invention;

[0034] Figure 10 is the schematic diagram of the self-cleaning photovoltaic panel system of the present invention in the cleaning state;

[0035] Figure 11 of the present invention Figure 4 partial enlarged view at C;

[0036] Figure 12 of the present invention Figure 5 partial enlarged view at D;

[0037] Figure 13 of the present invention Figure 5Partial enlarged view at position E in the figure;

[0038] Figure 14 This is the present invention Figure 8 Partial enlarged view at position F in the figure;

[0039] Figure 15 Schematic diagram of the upper and lower connecting covers of the right drive of the present invention.

[0040] In the figure: 1, base; 2, left bracket; 3, left drive; 4, right drive; 5, first photovoltaic panel; 6, second photovoltaic panel; 7, first brush group; 8, second brush group; 9, right bracket; 301, left outer guard plate; 302, first upper connecting cover; 303, first lower connecting cover; 304, left drive wheel group; 305, left conveyor belt; 306, left inner guard plate; 307, first front connecting cover; 308, first rear connecting cover; 309, first front stop; 310, first rear stop; 311, first support plate; 312, first support wheel group; 313, second support wheel group; 314, first left guide bar; 315, second left guide bar; 316, first upper strip groove; 317, first lower strip groove; 401, right outer guard plate; 402, second upper connecting cover; 403, second lower connecting cover; 404, right drive wheel group; 405, right conveyor belt; 406, right inner guard plate; 407, second front connecting cover; 408, second rear connecting cover; 409, second front stop; 410, second rear stop; 411, second support plate; 412, third support wheel group; 413, fourth support wheel group; 414, first right guide bar; 415, second right guide bar; 416, second upper strip groove; 417, second lower strip groove; 31, left telescopic cylinder body; 32, left telescopic rod; 33, left rotating shaft; 34, left guide wheel; 35, left drive wheel; 36, left motor; 41, right telescopic cylinder body; 42, right telescopic rod; 43, right rotating shaft; 44, right guide wheel; 45, right drive wheel; 46, right motor; 50, roller; 51, rotating shaft; 52, limit groove. Specific embodiments

[0041] 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0042] Figure 1 The direction indicated by the arrow W in the figure represents the forward direction. As Figures 1-3As shown in the figure, the self-cleaning photovoltaic panel system of the present invention includes a base 1. A left bracket 2 is provided on the left side of the upper end of the base 1, and a right bracket 9 is provided on the right side of the upper end of the base 1. The top of the left bracket 2 is connected to a left driver 3, and the top of the right bracket 9 is connected to a right driver 4, and the left and right drivers are mirror-symmetrical. A pair of photovoltaic panels are provided between the left and right drivers, namely photovoltaic panel one 5 and photovoltaic panel two 6, and photovoltaic panel one 5 and photovoltaic panel two 6 are coplanar with the left and right drivers. The front sides (i.e., the upper surfaces) of photovoltaic panel one 5 and photovoltaic panel two 6 face upward for receiving sunlight for power generation. A brush group one 7 is provided on the back side (i.e., the lower surface) of photovoltaic panel one 5, and a brush group two 8 is provided on the back side of photovoltaic panel two 6. The brush group one 7 and the brush group two 8 are multiple brushes arranged along the diagonal of the corresponding photovoltaic panel, and there is a set gap between adjacent brushes, so that when each brush group sweeps across the upper surface of the other photovoltaic panel, it can clean the entire front surface of the photovoltaic panel without leaving any dead corners. As a preference, the brush group one 7 and the brush group two 8 can be multiple groups of brushes arranged in multiple directions along the corresponding photovoltaic panel.

[0043] As Figures 4-6 shown, the left driver 3 includes a left outer guard plate 301. The top of the left outer guard plate 301 is provided with an upper connecting cover one 302 and is fixedly connected to the inner side wall of the left end of the upper connecting cover one 302. The bottom of the left outer guard plate 301 is provided with a lower connecting cover one 303 and is fixedly connected to the inner side wall of the left end of the lower connecting cover one 303. The top of the left bracket 2 is connected to the bottom end of the lower connecting cover one 303. As Figure 9As shown in the figure, the upper connecting cover 1-302 is a groove-shaped structure with an opening facing downward. The groove inside it is the upper strip groove 1-316 and is arranged along the axial direction of the upper connecting cover 1-302. At the inner side of the bottom of the right end of the upper connecting cover 1-302, a left guide strip 1-314 along its axial direction is connected. There is a gap between the left guide strip 1-314 and the top inner wall of the upper strip groove 1-316, and there is also a gap between the top wall of the left outer guard plate 301 and the top inner wall of the upper strip groove 1-316, and the top wall of the left guide strip 1-314 is flush with the top wall of the left outer guard plate 301. The lower connecting cover 1-303 is a groove-shaped structure with an opening facing upward. The groove inside it is the lower strip groove 1-317 and is arranged along the axial direction of the lower connecting cover 1-303. At the inner side of the top of the right end of the lower connecting cover 1-303, a left guide strip 2-315 along its axial direction is connected. There is a gap between the left guide strip 2-315 and the bottom inner wall of the lower strip groove 1-317, and there is also a gap between the bottom wall of the left outer guard plate 301 and the bottom inner wall of the lower strip groove 1-317, and the bottom wall of the left guide strip 2-315 is flush with the bottom wall of the left outer guard plate 301. A support plate 1-311 is provided between the upper connecting cover 1-302 and the lower connecting cover 1-303. The left side of the support plate 1-311 is in close contact with and fixedly connected to the left outer guard plate 301, and the right side of the support plate 1-311 is in close contact with and fixedly connected to the left inner guard plate 306. The areas of the left outer guard plate 301 and the left inner guard plate 306 are larger than that of the support plate 1-311. A support wheel set 1-312 and a support wheel set 1-313 are in rolling fit in the cavity formed by the left outer guard plate 301, the left inner guard plate 306, the support plate 1-311 and the upper connecting cover 1-302 and the lower connecting cover 1-303. As shown in Figure 13 the figure, each support wheel set includes a roller 50 and a rotating shaft 51 connected coaxially. The roller 50 is adapted to rotate relative to the rotating shaft 51 through a bearing. Each roller 50 is adapted to roll along the circumferential outer wall of the support plate 1-311 and be embedded in the upper strip groove 1-316 and the lower strip groove 1-317 to limit the roller 50. The width of the roller 50 does not exceed the thickness of the support plate 1-311, so that the roller 50 is embedded in the groove formed by the support plate 1-311, the left outer guard plate 301 and the left inner guard plate 306. As a preference, the left guide strip 1-314 and the left guide strip 2-315 can be of structures with different widths, so as to adjust the width of the limiting groove between them and the left outer guard plate 301 in the upper strip groove 1-316 and the lower strip groove 1-317 to match rollers 50 with different widths and / or support plates 1-311 with different thicknesses. As shown in Figure 5 the figure, there is a gap between the left inner guard plate 306 and the upper connecting cover 1-302 and the lower connecting cover 1-303. The rotating shaft 51 is adapted to pass through this gap and move in this gap.

[0044] On the left rear wall of the left outer guard plate 301, a convex rear connecting cover 1 308 is connected. The left end of the rear connecting cover 1 308 is fixedly connected to the left rear wall of the left outer guard plate 301, and its right inner wall is fixedly connected to the first rear stop 310. The axis of the first rear stop 310 is along the width direction of the left inner guard plate 306 and there is a gap between them. The rotating shaft 51 is adapted to pass through this gap and move within this gap. The left side surfaces of the first rear stop 310, the first left guiding strip 314, and the second left guiding strip 315 are in the same plane, so as to jointly limit the roller 50 with the left outer guard plate 301. The rear wall of the first rear stop 310 is flush with the rear wall of the left outer guard plate 301.

[0045] On the left front wall of the left outer guard plate 301, a convex front connecting cover 1 307 is connected. The left end of the front connecting cover 1 307 is fixedly connected to the left front wall of the left outer guard plate 301, and its right inner wall is fixedly connected to the first front stop 309. The axis of the first front stop 309 is along the width direction of the left inner guard plate 306 and there is a gap between them. The rotating shaft 51 is adapted to pass through this gap and move within this gap. The left side surfaces of the first front stop 309, the first left guiding strip 314, and the second left guiding strip 315 are in the same plane, so as to jointly limit the roller 50 with the left outer guard plate 301. The front wall of the first front stop 309 is flush with the front wall of the adjacent left outer guard plate 301.

[0046] On the left outer guard plate 301 between the first front connecting cover 307, the first rear connecting cover 308 and the first upper connecting cover 302, the first lower connecting cover 303, there are respectively provided a notch, and at each notch, a first left driving wheel set 304 is provided. As Figure 11 shown, the first left driving wheel set 304 includes a first left telescopic cylinder body 31. The fixed end of the first left telescopic cylinder body 31 is connected to the notch of the left outer guard plate 301 and extends outward along the plane of the left outer guard plate 301. A first left telescopic rod 32 is slidably fitted in the first left telescopic cylinder body 31, and the two form a telescopic cylinder, which can be a pneumatic cylinder or a hydraulic cylinder. A first left rotating shaft 33 is provided in the middle of the outer side of the first left telescopic rod 32. One end of the first left rotating shaft 33 is vertically fixed on one side of the first left telescopic rod 32, and the other end of the first left rotating shaft 33 is rotatably fitted with a first left guiding wheel 34. On the same side as the first left guiding wheel 34, a first left driving wheel 35 is rotatably provided at the outer end of the first left telescopic rod 32. The axes of the first left driving wheel 35 and the first left guiding wheel 34 are parallel to each other and there is a set gap between them. On the other side of the outer end of the first left telescopic rod 32, a first left motor 36 is provided, and the first left motor 36 is in transmission connection with the first left driving wheel 35.

[0047] As Figures 7-8As shown, a left conveyor belt 305 is provided circumferentially on the support plate 311. The left conveyor belt 305 passes through the gap between the upper strip groove 316, the left outer guard plate 301, and the left guide bar 314 and is supported on the top walls of the left guide bar 314 and the left outer guard plate 301. The left conveyor belt 305 passes through the gap between the lower strip groove 317, the left outer guard plate 301, and the left guide bar 315 and is supported on the bottom walls of the left guide bar 315 and the left outer guard plate 301. As Figure 13 shown, the left conveyor belt 305 passes through the inside of the rear connecting cover 308 and is supported on the rear side walls of the left outer guard plate 301 and the rear stop 310. The left conveyor belt 305 passes through the inside of the front connecting cover 307 and is supported on the front side walls of the left outer guard plate 301 and the front stop 309. The left conveyor belt 305 passes through the gap between the left drive wheel 35 and the left guide wheel 34 of each left drive wheel group 304 and is clamped and driven by the two. The left conveyor belt 305 is made of an elastic material, and its thickness is greater than the gap between the left drive wheel 35 and the left guide wheel 34, so as to ensure the clamping force and friction force on the left conveyor belt 305 during the conveying process. The widths of the left drive wheel 35 and the left guide wheel 34 are equal and smaller than the width of the left conveyor belt 305 to avoid movement interference with the roller 50. As a preference, another set of left drive wheel groups 304 can be symmetrically arranged on the left inner guard plate 306 to improve the driving stability of the left conveyor belt 305.

[0048] The right driver 4 and the left driver 3 are arranged in mirror symmetry. As Figures 4-6 shown, the right driver 4 includes a right outer guard plate 401. The top of the right outer guard plate 401 is provided with an upper connecting cover 402 and is fixedly connected to the inner side wall of the right end of the upper connecting cover 402. The bottom of the right outer guard plate 401 is provided with a lower connecting cover 403 and is fixedly connected to the inner side wall of the right end of the lower connecting cover 403. The top end of the right bracket 9 is connected to the bottom end of the lower connecting cover 403. As Figure 15As shown in the figure, the upper connecting cover II 402 is a groove-shaped structure with an opening facing downwards. The groove inside it is the upper strip groove II 416 and is arranged along the axial direction of the upper connecting cover II 402. On the inner side of the bottom at the left end of the upper connecting cover II 402, there is a right guide strip I 414 arranged along its axial direction. There is a gap between the right guide strip I 414 and the top inner wall of the upper strip groove II 416, and there is also a gap between the top wall of the right outer guard plate 401 and the top inner wall of the upper strip groove II 416, and the top wall of the right guide strip I 414 is flush with the top wall of the right outer guard plate 401. The lower connecting cover II 403 is a groove-shaped structure with an opening facing upwards. The groove inside it is the lower strip groove II 417 and is arranged along the axial direction of the lower connecting cover II 403. On the inner side of the top at the left end of the lower connecting cover II 403, there is a right guide strip II 415 arranged along its axial direction. There is a gap between the right guide strip II 415 and the bottom inner wall of the lower strip groove II 417, and there is also a gap between the bottom wall of the right outer guard plate 401 and the bottom inner wall of the lower strip groove II 417, and the bottom wall of the right guide strip II 415 is flush with the bottom wall of the right outer guard plate 401. A support plate II 411 is provided between the upper connecting cover II 402 and the lower connecting cover II 403. The right side of the support plate II 411 is in close contact with and fixedly connected to the right outer guard plate 401, and the left side of the support plate II 411 is in close contact with and fixedly connected to the right inner guard plate 406. The areas of the right outer guard plate 401 and the right inner guard plate 406 are larger than that of the support plate II 411. A support wheel set III 412 and a support wheel set IV 413 are in rolling fit in the cavity formed between the right outer guard plate 401, the right inner guard plate 406, the support plate II 411 and the upper connecting cover II 402 and the lower connecting cover II 403. Similarly, each support wheel set includes a roller 50 and a rotating shaft 51 connected coaxially. The roller 50 is adapted to rotate relative to the rotating shaft 51 through a bearing. Each roller 50 is adapted to roll along the circumferential outer wall of the support plate II 411 and be embedded in the upper strip groove II 416 and the lower strip groove II 417 to limit the roller 50. The width of the roller 50 does not exceed the thickness of the support plate II 411, so that the roller 50 is embedded in the groove formed by the support plate II 411, the right outer guard plate 401 and the right inner guard plate 406. As a preference, the right guide strip I 414 and the right guide strip II 415 can be structures with different widths, so as to adjust the width of the limiting groove between the two and the right outer guard plate 401 in the upper strip groove II 416 and the lower strip groove II 417 to match rollers 50 with different widths and / or support plates II 411 with different thicknesses. As Figure 4 shown, there is a gap between the right inner guard plate 406 and the upper connecting cover II 402 and the lower connecting cover II 403. The rotating shaft 51 is adapted to pass through this gap and move within this gap.

[0049] On the rear right side wall of the right outer guard plate 401, a convex rear connecting cover two 408 is connected. The right end of the rear connecting cover two 408 is fixedly connected to the rear right side wall of the right outer guard plate 401, and the inner side wall of its left end is fixedly connected to the rear stop two 410. The axial direction of the rear stop two 410 is along the width direction of the right inner guard plate 406 and there is a gap between them. The rotating shaft 51 is adapted to pass through this gap and move within this gap. The right side surfaces of the rear stop two 410, the right guide bar one 414, and the right guide bar two 415 are in the same plane so as to jointly limit the roller 50 with the right outer guard plate 401. The rear side wall of the rear stop two 410 is flush with the rear side wall of the right outer guard plate 401.

[0050] On the front right side wall of the right outer guard plate 401, a convex front connecting cover two 407 is connected. The right end of the front connecting cover two 407 is fixedly connected to the front right side wall of the right outer guard plate 401, and the inner side wall of its left end is fixedly connected to the front stop two 409. The axial direction of the front stop two 409 is along the width direction of the right inner guard plate 406 and there is a gap between them. The rotating shaft 51 is adapted to pass through this gap and move within this gap. The right side surfaces of the front stop two 409, the right guide bar one 414, and the right guide bar two 415 are in the same plane so as to jointly limit the roller 50 with the right outer guard plate 401. The front side wall of the front stop two 409 is flush with the adjacent front side wall of the right outer guard plate 401.

[0051] On the right outer guard plate 401 between the front connecting cover two 407, the rear connecting cover two 408 and the upper connecting cover two 402, the lower connecting cover two 403, there are respectively provided a notch, and at each notch, a right drive wheel group 404 is provided. As Figure 12 shown, the right drive wheel group 404 includes a right telescopic cylinder body 41. The fixed end of the right telescopic cylinder body 41 is connected to the notch of the right outer guard plate 401 and extends outward along the plane of the right outer guard plate 401. A right telescopic rod 42 is slidably fitted in the right telescopic cylinder body 41, and the two form a telescopic cylinder, which can be a pneumatic cylinder or a hydraulic cylinder. In the middle of the outer side of the right telescopic rod 42, there is provided a right rotating shaft 43. One end of the right rotating shaft 43 is vertically fixed on one side of the right telescopic rod 42, and the other end of the right rotating shaft 43 is rotatably fitted with a right guide wheel 44. On the same side as the right guide wheel 44, the outer end of the right telescopic rod 42 is rotatably provided with a right drive wheel 45. The axis of the right drive wheel 45 is parallel to the axis of the right guide wheel 44 and there is a set gap between them. On the other side of the outer end of the right telescopic rod 42, there is provided a right motor 46, and the right motor 46 is in transmission connection with the right drive wheel 45.

[0052] A right conveyor belt 405 is provided circumferentially on the second support plate 411. The right conveyor belt 405 passes through the gap between the upper strip groove two 416, the right outer guard plate 401, and the first right guide bar 414 and is supported on the top walls of the first right guide bar 414 and the right outer guard plate 401. The right conveyor belt 405 passes through the gap between the lower strip groove two 417, the right outer guard plate 401, and the second right guide bar 415 and is supported on the bottom walls of the second right guide bar 415 and the right outer guard plate 401. The right conveyor belt 405 passes through the inside of the rear connecting cover two 408 and is supported on the rear side walls of the right outer guard plate 401 and the second rear stop 410. The right conveyor belt 405 passes through the inside of the front connecting cover two 407 and is supported on the front side walls of the right outer guard plate 401 and the second front stop 409. The right conveyor belt 405 passes through the gap between the right drive wheel 45 and the right guide wheel 44 of each right drive wheel group 404 and is clamped and driven by the two. The right conveyor belt 405 is made of an elastic material, and its thickness is greater than the gap between the right drive wheel 45 and the right guide wheel 44, so as to ensure the clamping force and frictional force on the right conveyor belt 405 during the conveying process. The widths of the right drive wheel 45 and the right guide wheel 44 are equal and smaller than the width of the right conveyor belt 405 to avoid movement interference with the roller 50. As a preference, another set of right drive wheel groups 404 can be symmetrically arranged on the right inner guard plate 406 to improve the driving stability of the right conveyor belt 405.

[0053] A first photovoltaic panel 5 and a second photovoltaic panel 6 are provided between the left driver 3 and the right driver 4. The structures and dimensions of the two photovoltaic panels are the same and the front sides facing the sun are upward. The center of the left side wall of the first photovoltaic panel 5 is fixedly connected to the rotating shaft 51 of the first support wheel group 312, and the center of the right side wall of the first photovoltaic panel 5 is fixedly connected to the rotating shaft 51 of the third support wheel group 412. The center of the left side wall of the second photovoltaic panel 6 is fixedly connected to the rotating shaft 51 of the second support wheel group 313, and the center of the right side wall of the second photovoltaic panel 6 is fixedly connected to the rotating shaft 51 of the fourth support wheel group 413. As Figure 14 shown, a limiting groove 52 is respectively provided at the center of the front and rear side walls of the first support plate 311 and the second support plate 411, and its shape matches that of the roller 50. When each roller 50 rolls along the circumferential edge of the first support plate 311 or the second support plate 411, if the roller 50 enters the limiting groove 52, the limiting groove 52 can limit it, and without sufficient external force, the roller 50 will not come out of the limiting groove 52. When all the rollers 50 are located in the limiting groove 52, as Figures 1-3 shown, the first photovoltaic panel 5 and the second photovoltaic panel 6 are exactly flush and there is a set gap between the adjacent outer walls of the two to prevent mutual interference.

[0054] When the roller 50 rolls along the circumferential edge of the first support plate 311, the roller 50 will pass through the gaps between the first rear stop 310 and the left outer guard plate 301, between the first left guide bar 314 and the left outer guard plate 301, between the first front stop 309 and the left outer guard plate 301, and between the second left guide bar 315 and the left outer guard plate 301, and is guided and limited by them; and the edge of the roller 50 extends beyond their circumferential outer edges, so as to maintain the contact pressure between the left conveyor belt 305 and the edge of the roller 50. When the roller 50 passes through the adjacent positions between the first rear stop 310, the first left guide bar 314, the first front stop 309 and the second left guide bar 315, there are gaps at each adjacent position, and the diameter of the roller 50 is greater than the diameter of the gap, so that the roller 50 can smoothly transition when passing through the adjacent position and will not disengage from the adjacent position in the left and right directions.

[0055] When the roller 50 rolls along the circumferential edge of the second support plate 411, the roller 50 will pass through the gaps between the second rear stop 410 and the right outer guard plate 401, between the first right guide bar 414 and the right outer guard plate 401, between the second front stop 409 and the right outer guard plate 401, and between the second right guide bar 415 and the right outer guard plate 401, and is guided and limited by them; and the edge of the roller 50 extends beyond their circumferential outer edges, so as to maintain the contact pressure between the right conveyor belt 405 and the edge of the roller 50. When the roller 50 passes through the adjacent positions between the second rear stop 410, the first right guide bar 414, the second front stop 409 and the second right guide bar 415, there are gaps at each adjacent position, and the diameter of the roller 50 is greater than the diameter of the gap, so that the roller 50 can smoothly transition when passing through the adjacent position and will not disengage from the adjacent position in the left and right directions.

[0056] As a preference, a set gap is provided between the left inner guard plate 306, the right inner guard plate 406 and the first photovoltaic panel 5, the second photovoltaic panel 6, and the first photovoltaic panel 5 and the second photovoltaic panel 6 are limited from both sides respectively.

[0057] The working principle of the self-cleaning photovoltaic panel system of the present invention is as follows:

[0058] (1) The photovoltaic panel is in a power generation state, such as Figures 1-3As shown, when the first photovoltaic panel 5 and the second photovoltaic panel 6 are flush with each other, the two photovoltaic panels face the sun and receive sunlight for power generation. At this time, the left telescopic rods 32 of the four left drive wheel groups 304 on the left driver 3 retract to reduce the exposed part thereof, thereby tightening the left conveyor belt 305 and increasing the pressing force of the left conveyor belt 305 on the rollers 50 of the first support wheel group 312 and the second support wheel group 313, so as to limit the rollers 50 in the corresponding limit grooves 52. The right telescopic rods 42 of the four right drive wheel groups 404 on the right driver 4 retract to reduce the exposed part thereof, thereby tightening the right conveyor belt 405 and increasing the pressing force of the right conveyor belt 405 on the rollers 50 of the third support wheel group 412 and the fourth support wheel group 413, so as to limit the rollers 50 in the corresponding limit grooves 52.

[0059] (2) When the photovoltaic panels are in the dust cleaning state, the left and right telescopic rods on the above-mentioned left and right drivers respectively extend to a set length, so as to reduce the pressing force of the left and right conveyor belts on the corresponding rollers 50 and ensure the transmission friction between each conveyor belt and the rollers. Then, the left motor 36 on the left driver and the right motor 46 on the right driver work simultaneously and drive the left and right conveyor belts to move. The left and right conveyor belts drive the corresponding rollers 50 to roll along the circumferential edge of the first support plate 311 or the second support plate 411. When the first photovoltaic panel 5 and the photovoltaic panel 6 are in the upper and lower overlapping positions, as Figure 10 shown, the first brush group 7 at the bottom of the upper first photovoltaic panel 5 will clean the upper surface of the lower second photovoltaic panel 6. As the left and right conveyor belts continue to move, when the photovoltaic panel 6 is on the upper side, the second brush group 8 at its bottom will clean the upper surface of the lower first photovoltaic panel 5. This cleaning process can be carried out multiple times, so as to thoroughly clean the dust or sand deposited on the upper surfaces of the first photovoltaic panel 5 and the second photovoltaic panel 6.

[0060] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A self-cleaning photovoltaic panel system, comprising a photovoltaic panel 1 (5) and a photovoltaic panel 2 (6) arranged adjacent to each other, characterized in that: A left driver (3) and a right driver (4) are respectively arranged on the left and right sides of the photovoltaic panel 1 (5) and the photovoltaic panel 2 (6); the left driver (3) comprises a support wheel group 1 (312) and a support wheel group 2 (313) which are rollingly matched along the circumference thereof; the right driver (4) comprises a support wheel group 3 (412) and a support wheel group 4 (413) which are rollingly matched along the circumference thereof; the support wheel group 1 (312) and the support wheel group 3 (412) are respectively connected to the left and right side walls of the photovoltaic panel 1 (5); the support wheel group 2 (313) and the support wheel group 4 (413) are respectively connected to the left and right side walls of the photovoltaic panel 2 (6); a brush group is respectively arranged on the back side of the photovoltaic panel 1 (5) and the photovoltaic panel 2 (6); when the photovoltaic panel 1 (5) and the photovoltaic panel 2 (6) move along the circumference of the left and right drivers, the brushes on each photovoltaic panel are suitable for cleaning the front side of each other.

2. The self-cleaning photovoltaic panel system according to claim 1, characterized in that: The left driver (3) comprises a fixed support plate 1 (311), a support wheel group 1 (312) and a support wheel group 2 (313) respectively consisting of rollers (50) and rotating shafts (51) which can rotate relative to each other, wherein each roller (50) thereon is suitable for rolling along the circumferential edge of the support plate 1 (311), and each rotating shaft (51) thereon is respectively connected to the corresponding photovoltaic panel 1 (5) and photovoltaic panel 2 (6); the right driver (4) is mirror-symmetrical to the left driver (3), and comprises a fixed support plate 2 (411), a support wheel group 3 (412) and a support wheel group 4 (413) also consisting of the rollers (50) and rotating shafts (51), wherein each roller (50) thereon is suitable for rolling along the circumferential edge of the support plate 2 (411), and each rotating shaft (51) thereon is respectively connected to the corresponding photovoltaic panel 1 (5) and photovoltaic panel 2 (6).

3. The self-cleaning photovoltaic panel system according to claim 2, characterized in that: The left driver (3) comprises a limiting device 1 for limiting the position of its roller (50), the limiting device 1 comprising a left outer guard plate (301) and a left inner guard plate (306) arranged on the left and right sides of a support plate 1 (311), an upper connecting cover 1 (302) arranged on the upper side of the support plate 1 (311) and a left guide strip 1 (314) therein, a lower connecting cover 1 (303) arranged on the lower side of the support plate 1 (311) and a left guide strip 2 (315) therein, a rear connecting cover 1 (308) arranged on the rear side of the support plate 1 (311) and a rear stopper 1 (310) therein, and a front connecting cover 1 (307) arranged on the front side of the support plate 1 (311) and a front stopper 1 (309) therein; the left outer guard plate (301) is respectively connected to the upper connecting cover 1 (302) and the left guide strip 1 (314) therein, , a lower connecting cover (303), a rear connecting cover (308), and a front connecting cover (307) are fixedly connected and clearance-matched; a gap is provided between the left inner guard plate (306) and the left guide bar (314), the left guide bar (315), the rear block (310), and the front block (309), respectively, and the width of the gap is greater than the diameter of the rotating shaft (51) and smaller than the diameter of the roller (50); a gap is also provided at adjacent locations between the left guide bar (314), the left guide bar (315), the rear block (310), and the front block (309), and the diameter of the gap is smaller than the diameter of the roller (50); the right driver (4) includes a limiting device (2) for limiting the position of its roller (50), and the limiting device (2) is arranged in a mirror image with the limiting device (1).

4. The self-cleaning photovoltaic panel system according to claim 3, characterized in that: The left driver (3) comprises a driving device 1 for driving its roller (50) to roll; the driving device 1 comprises a plurality of left driving wheel groups (304) which are respectively arranged on a left outer guard plate (301) adjacent to a left guide bar 1 (314), a left guide bar 2 (315), a rear stopper 1 (310) and a front stopper 1 (309); the left driving wheel group (304) comprises a left telescopic cylinder body (31) connected to the left outer guard plate (301); a left telescopic rod (32) is slidably fitted in the left telescopic cylinder body (31); an exposed portion of the left telescopic rod (32) is adjacent to the roller A left guide wheel (34) and a left driving wheel (35) are rotatably matched on the side wall of the roller (50) so as not to interfere with the movement of the roller (50). The axes of the two wheels are parallel to each other and there is a set gap between them. A left motor (36) connected to the left driving wheel (35) is provided on one side of the left driving wheel (35). The right driver (4) includes a second driving device for driving the roller (50) to roll. The second driving device is arranged in a mirror image with the first driving device. Conveyor belts are respectively passed through the guide wheels and driving wheels of the left and right driving devices. The conveyor belts are suitable for pressing against the corresponding rollers (50) with a set pressure.

5. The self-cleaning photovoltaic panel system according to claim 4, characterized in that: The conveyor belt is passed through the inner side of the upper connecting cover 1 (302) in the limiting device 1 and is slidably supported on the top of the left outer guard plate (301) and the left guide strip 1 (314); passed through the inner side of the lower connecting cover 1 (303) and is slidably supported on the bottom of the left outer guard plate (301) and the left guide strip 2 (315); passed through the inner side of the rear connecting cover 1 (308) and is slidably supported on the rear of the left outer guard plate (301) and the rear block 1 (310); passed through the inner side of the front connecting cover 1 (307) and is slidably supported on the front of the left outer guard plate (301) and the front block 1 (309); the conveyor belt is passed through the limiting device 2 in the same arrangement; when the roller (50) rolls along the circumferential edge of the support plate 1 (311) and the support plate 2 (411), the wheel rim of the roller (50) exceeds the contact edge of the supporting conveyor belt on each limiting device and is suitable for being pressed tightly with the conveyor belt.

6. The self-cleaning photovoltaic panel system according to claim 5, characterized in that: The front and rear side walls of the support plate 1 (311) and the support plate 2 (411) are respectively provided with limiting grooves (52) matching the wheel rims of the rollers (50); when the rollers (50) are located in the limiting grooves (52), the photovoltaic panel 1 (5) and the photovoltaic panel 2 (6) are adapted to be flush with each other.

7. A method for operating a self-cleaning photovoltaic panel system according to claim 6, characterized in that include: a. Photovoltaic panel power generation state: each driving device drives the corresponding conveyor belt to move, the conveyor belt drives the corresponding roller (50) to move, and each roller (50) of the left and right drivers synchronously rolls along the circumferential edge of the support plate to the corresponding limit groove (52), and the photovoltaic panel 1 (5) and the photovoltaic panel 2 (6) are aligned with each other and receive sunlight to enter the power generation state; b. Photovoltaic panel cleaning state: each driving device drives the corresponding conveyor belt to move, the conveyor belt drives the corresponding roller (50) to move, the rollers (50) of the left and right drivers roll synchronously along the circumferential edge of the support plate, photovoltaic panel one (5) and photovoltaic panel two (6) move relative to each other in a stacked manner, and the bristles at the bottom of the photovoltaic panel on the upper side clean the front of the other photovoltaic panel.

Images