A self-cleaning solar photovoltaic panel

Abstract

The present invention relates to the technical field of photovoltaic power generation, and specifically discloses a self-cleaning solar photovoltaic panel, comprising a photovoltaic panel frame rotatably arranged on a bracket assembly, a photovoltaic panel arranged in the photovoltaic panel frame, a cleaning mechanism arranged in the photovoltaic panel frame and located above the photovoltaic panel, the cleaning mechanism comprising a movable bar seat and a corrugated telescopic tube, a sliding guide mechanism is arranged between the two end portions of the movable bar seat and the side bars on the photovoltaic panel frame, and an elastic member is arranged in the sliding guide mechanism, a flexible brush strip is arranged at the lower end of the movable bar seat, and a flushing mechanism and a scraping mechanism are respectively arranged in the movable bar seats located on both sides of the flexible brush strip; the self-cleaning solar photovoltaic panel disclosed in the present invention not only reduces its manufacturing and operating costs, but also the entire cleaning mechanism is cleverly designed and can be combined with the telescopic process of the corrugated telescopic tube to achieve effective cleaning of the surface of the photovoltaic panel, thereby ensuring the photoelectric conversion efficiency of the photovoltaic panel during long-term operation.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaic power generation, and specifically discloses a self-cleaning solar photovoltaic panel. Background Art

[0002] Photovoltaic panels are the core components of solar power generation systems. They are usually installed outdoors, and the light-receiving surface receives as much light as possible. However, as photovoltaic panels are placed outdoors for a long time, dust will gradually adhere to the light-receiving surface, which will affect the photoelectric conversion efficiency. Therefore, the light-receiving surface of the photovoltaic panel needs to be cleaned regularly.

[0003] The cleaning of existing photovoltaic panels is mainly done manually. Since photovoltaic panels are usually installed on the roof, manual cleaning is difficult and inefficient. There are also some photovoltaic panels with self-contained cleaning devices on the market, but these cleaning devices require additional power drive components as a separate driving source. In addition, photovoltaic panels are generally arranged in large quantities, which increases their manufacturing and operating costs.

[0004] For example, the utility model patent with application number 2023208005690 discloses a solar photovoltaic panel with a cleaning structure, which includes a bracket, a solar panel is fixedly installed on the upper end of the bracket, a cleaning mechanism is arranged at one end of the bracket, and the cleaning mechanism includes a control box fixedly arranged at one end of the bracket near the upper position of the solar panel, and a slide rail shell is fixedly arranged at one end of the bracket near the front and rear sides of the solar panel, and the inner sides of the two sets of slide rail shells are movably provided with threaded rods, and the inner sides of the two sets of slide rail shells are provided with sliders, and a cleaning cylinder is fixedly arranged between the two sets of sliders. The solar photovoltaic disclosed in this patent needs to be driven by a motor to realize the movement of the cleaning mechanism, and then complete the cleaning operation on the surface of the photovoltaic panel, which not only leads to an increase in the manufacturing and operating costs of the photovoltaic panel, but also the exposed design of the motor is prone to damage, and its stable operation cannot be guaranteed. In addition, the cleaning mechanism can only purge the surface of the photovoltaic panel, and some dust is attached to the surface of the photovoltaic panel through rainwater. It is impossible to clean the surface only by blowing or brushing, and it is still impossible to ensure that the photovoltaic panel converts electricity at the maximum photoelectric conversion rate. Therefore, in response to the problem of cleaning the surface of existing photovoltaic panels, the present application proposes a self-cleaning solar photovoltaic panel, which enables the surfaces of all photovoltaic panels to be effectively cleaned under the drive of a water pump, thereby ensuring the cleaning effect of the photovoltaic panel surface. Summary of the invention

[0005] The present invention aims to provide a self-cleaning solar photovoltaic panel, so that the surfaces of all photovoltaic panels can be fully cleaned under the drive of only one water pump, thereby ensuring the photoelectric conversion efficiency of the photovoltaic panel during long-term operation.

[0006] The present invention is achieved through the following technical solutions:

[0007] A self-cleaning solar photovoltaic panel, comprising a photovoltaic panel frame rotatably arranged on a bracket assembly, a photovoltaic panel arranged in the photovoltaic panel frame, a cleaning mechanism located above the photovoltaic panel arranged in the photovoltaic panel frame, the cleaning mechanism comprising a moving bar seat and a corrugated telescopic tube, a sliding guide mechanism is arranged between the two ends of the moving bar seat and the side bars on the photovoltaic panel frame, and an elastic member for realizing the resetting of the moving bar seat is arranged in the sliding guide mechanism, one end of the corrugated telescopic tube is connected to the moving bar seat, and the other end is fixedly connected to the photovoltaic panel frame, and the fixed connection end of the corrugated telescopic tube is connected to a water supply component;

[0008] A flexible brush strip is provided at the lower end of the movable bar seat, and a flushing mechanism and a scraping mechanism are respectively provided in the movable bar seats on both sides of the flexible brush strip, the flushing mechanism includes a strip water storage chamber opened in the movable bar seat and connected with the corrugated telescopic tube, a liquid discharge channel is provided at the lower end of the strip water storage chamber, a blocking column arranged through the upper end of the strip water storage chamber is provided in the liquid discharge channel, and the upper ends of the blocking columns are commonly connected with a strip plate, guide columns are provided at both ends of the strip plate, and a reciprocating guide groove acting on the guide column is provided on the side bar of the photovoltaic panel frame, the reciprocating guide groove is composed of two upper and lower parallel straight line segments and oblique connecting segments at both ends connected in sequence, the scraping mechanism includes a scraper arranged through the movable bar seat up and down, the upper end of the movable bar seat is rotatably connected with a rotating lever, and the two ends of the rotating lever are respectively connected with the scraper and the strip plate.

[0009] The self-cleaning solar photovoltaic panels disclosed in the present invention are arranged in pieces through a bracket assembly during installation, and the same group of photovoltaic panels can achieve synchronous single-axis tracking, so that the photovoltaic panels receive light at a maximum receiving angle to improve the photoelectric conversion efficiency of the photovoltaic panels.

[0010] After the photovoltaic panel runs for a period of time (the specific time can be set to 3 days, 7 days or 10 days), the surface of the photovoltaic panel is self-cleaned through remote control technology or by directly turning on the control switch of the corresponding cleaning action manually. The specific steps are to first rotate the photovoltaic panel to a certain tilt angle, and then start the water supply component to synchronously fill tap water into the bellows in all cleaning mechanisms, so that the bellows are extended downward from the top under the action of tap water, and during the extension process, the moving bar seat is pushed downward, and the elastic member is stretched and stored.

[0011] During the downward movement of the moving bar seat, due to the action of the guide column and the upper straight section in the reciprocating guide groove, the sealing column is inserted downward into the liquid outlet channel to seal it. At the same time, due to the action of the rotating lever, the scraper is lifted upward and does not contact the surface of the photovoltaic panel. Therefore, during this movement of the moving bar seat, the surface of the photovoltaic panel can only be brushed once by the flexible brush strip at the bottom until the dust and impurities swept down are discharged from the cleaning gap.

[0012] Then, the photovoltaic panel is controlled to rotate in the opposite direction to a certain tilt angle, and the water supply assembly stops filling tap water into the bellows. At this time, the elastic restoring force of the elastic member causes the movable bar seat to begin to retract, and before retracting, the guide column has moved through the oblique connecting section in the reciprocating guide groove to interact with the upper straight section, resulting in the blocking column being lifted upward during the retraction of the movable bar seat, and the blocking effect on the liquid outlet channel is released, so that the tap water inside the bellows is squeezed out of the liquid outlet channel and sprayed on the surface of the photovoltaic panel during the retraction process. At the same time, due to the action of the rotating lever, the scraper is pressed down to contact the surface of the photovoltaic panel, so that during the retraction of the movable bar seat, the flushing water is first sprayed on the surface of the photovoltaic panel through the liquid outlet channel, and then the flexible brush strip is used to brush its surface for the second time. After the brushing is completed, the scraper removes all the stains remaining on the surface of the photovoltaic panel, so that the surface of the photovoltaic panel after cleaning can be very clean, ensuring the subsequent photoelectric conversion efficiency of the photovoltaic panel.

[0013] As a further configuration of the above scheme, the sliding guide mechanism includes sliding blocks arranged at both ends of the moving bar seat, a linear groove interacting with the sliding block is provided on the side bar located below the reciprocating guide groove, and a sliding rod is provided in the linear groove to play a sliding guide role for the sliding block, and the elastic member is connected between the sliding block and the end wall of the linear groove. The above is one of the specific design schemes of the guide sliding mechanism, and the action between the sliding block, the linear groove and the sliding rod can make the moving bar seat move stably above the photovoltaic panel, so that the surface of the photovoltaic panel can be effectively brushed by the flexible brush strip.

[0014] As a further configuration of the above solution, the elastic member is one of a spring or an elastic rope. The selection of the specific elastic member is not limited to the above two types, as long as the elastic member has a large elastic deformation amount and a strong rebound effect.

[0015] As a further configuration of the above scheme, the fixed connection end of the bellows expansion pipe is connected to a bend pipe extending from the lower end of the photovoltaic panel frame, and a one-way valve is provided at the position where the bend pipe is connected to the water supply assembly. The design of the bend pipe can more conveniently connect the water supply assembly to the bellows expansion pipe, and the one-way valve can prevent the flushing water from flowing back into the water supply assembly during the movement of the moving bar seat, thereby reducing the amount of flushing water used on the surface of the photovoltaic panel.

[0016] As a further configuration of the above scheme, the photovoltaic panel frame includes two left and right parallel side bars and two upper and lower parallel end bars, the side bars and the end bars are vertically connected in sequence to form a rectangular frame, and a bracket is provided at the lower end of the rectangular frame, the photovoltaic panel is installed on the bracket, and cleaning gaps are reserved between the photovoltaic panel and the two end bars. The installation method between the photovoltaic panel frame and the photovoltaic panel can discharge the cleaned dust and dirt from it during the forward and backward movement process through the cleaning gaps reserved at both ends.

[0017] As a further configuration of the above scheme, the support assembly includes a plurality of columns arranged side by side at equal intervals, a bearing seat is arranged on the top of each column, a plurality of photovoltaic panel frames are rotatably arranged between two adjacent bearing seats, and a driving device for driving all photovoltaic panel frames to rotate synchronously is arranged on the column at the end. The above is one of the specific installation methods between the support assembly and the plurality of photovoltaic panels, so that all photovoltaic panels can be synchronously driven to rotate under the action of the driving device, so that they have a tracking effect.

[0018] As a further configuration of the above scheme, a frame bar is fixedly connected to the lower end of the bracket, and both ends of the frame bar are provided with end shafts rotatably connected to the bearing seat, and a plurality of photovoltaic panel frames are connected as a whole through the end shafts.

[0019] As a further configuration of the above scheme, the water supply assembly includes a water pump and a water main pipe, one end of the water main pipe is connected to the water pump, and a plurality of branch hoses are connected to the water main pipe, and the end of each branch hose is connected to the corrugated telescopic pipe in the corresponding cleaning mechanism. The above is a specific design scheme of the water supply assembly, and all cleaning mechanisms can be synchronously driven to operate only through the action of a water pump, thereby synchronously completing the cleaning of all photovoltaic panel surfaces in the same group.

[0020] As a further configuration of the above scheme, a slot is provided on the movable bar seat, the scraper is arranged along the slot and passes through the movable bar seat, and a lever support connected to a rotating lever is provided at the upper end of the movable bar seat.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The self-cleaning solar photovoltaic panel disclosed in the present invention adopts the hydraulic principle to realize the extension of the bellows expansion tube, and utilizes the elastic restoring force of the elastic member so that all cleaning mechanisms can synchronously reciprocate along the surface of the photovoltaic panel under the action of only one water supply component, thereby completing the cleaning of the surface of the photovoltaic panel. Compared with the existing scheme of using motors, cylinders and other driving members to independently drive each cleaning mechanism to operate, it can not only avoid the quality and life problems caused by the driving members being exposed to the wind and rain for a long time, but also can effectively reduce the number of driving members used, thereby reducing their manufacturing and operating costs.

[0023] The self-cleaning solar photovoltaic panel disclosed in the present invention has a structural design of a cleaning mechanism and cooperates with a reciprocating guide groove on a photovoltaic panel frame, so that when the movable bar seat moves back and forth along the surface of the photovoltaic panel, the surface of the photovoltaic panel is first cleaned by a flexible brush bar to remove most of the dust and impurities, and then the water in the corrugated telescopic tube is squeezed out during the return movement to be sprayed on the surface of the photovoltaic panel to complete the flushing, and then the flexible brush bar performs a second brushing after flushing, and finally the scraper scrapes away all the stains remaining on the surface of the photovoltaic panel; the entire cleaning mechanism is cleverly designed and can be combined with the expansion and contraction process of the corrugated telescopic tube to achieve effective cleaning of the surface of the photovoltaic panel, thereby ensuring the photoelectric conversion efficiency of the photovoltaic panel during long-term operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure from a first angle of the present invention;

[0026] Figure 2 It is a schematic diagram of the three-dimensional structure from a second angle of the present invention;

[0027] Figure 3 It is a three-dimensional structural schematic diagram of the photovoltaic panel frame, photovoltaic panel, and cleaning mechanism in the present invention;

[0028] Figure 4 It is a schematic diagram of the three-dimensional structure of the photovoltaic panel frame and the bottom of the photovoltaic panel in the present invention;

[0029] Figure 5 It is a schematic diagram of the three-dimensional structure of the cleaning mechanism in the present invention from a first angle;

[0030] Figure 6 It is a schematic diagram of the three-dimensional structure of the cleaning mechanism of the present invention from a second angle;

[0031] Figure 7 For the present invention Figure 5 The enlarged structural diagram at B in FIG.

[0032] Figure 8 For the present invention Figure 3 A is an enlarged structural diagram;

[0033] Fig. 9 For the present invention Figure 6 The enlarged structural diagram at C in FIG.

[0034] Fig.10 It is a schematic diagram of the cross-sectional internal planar structure of the movable bar seat in Example 2 of the present invention. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0036] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. Figures 1 to 10 , and describes the application in detail with reference to embodiments. Example 1

[0037] Embodiment 1 discloses a self-cleaning solar photovoltaic panel. Figure 1 and attached Figure 2 , including a bracket assembly 1, a photovoltaic panel frame 2, a photovoltaic panel 3, a cleaning mechanism 4 and a water supply component 5. A plurality of photovoltaic panel frames 2 are installed side by side on the bracket assembly 1, and then a photovoltaic panel 3 is installed at the bottom of each photovoltaic panel frame 2, and a cleaning mechanism 4 is installed in each photovoltaic panel frame 2 above the photovoltaic panel 3, and finally the water supply component 5 is connected to all the cleaning mechanisms 4.

[0038] The bracket assembly 1 includes a plurality of columns 101 arranged side by side at equal intervals, a bearing seat 102 is installed on the top of each column 101, and then the photovoltaic panel frame 2 is rotatably installed between the two bearing seats 102, and the side ends of two adjacent photovoltaic panel frames 2 are fixedly connected, and finally a driving device 103 for driving the photovoltaic panel frame 2 to rotate is provided on the column 101 at the end, so that under the action of the driving device 103, the rotation adjustment of all photovoltaic panel frames 2 can be synchronously realized to adjust the photovoltaic panel 3 to maintain the maximum receiving angle with the sunlight and improve the photoelectric conversion rate.

[0039] Reference Figure 3 and attached Figure 4 The photovoltaic panel frame 2 includes two parallel side bars 201 and two parallel end bars 202. The four are connected vertically from head to tail to form a rectangular frame, and a bracket 203 is connected to the bottom of the rectangular frame. The photovoltaic panel 3 is then fixedly mounted on the upper end of the bracket 203, and a certain cleaning gap is reserved between the upper and lower ends of the photovoltaic panel 3 and the end bars 202, so that dust and impurities in the cleaning process can be discharged from the photovoltaic panel frame 2 through the cleaning gap. In addition, a frame bar 204 is fixed to the lower end of the bracket 203 by bolt connection or welding, and an end shaft 205 is set at both ends of the frame bar 204, so that the end shaft 205 is connected to the corresponding bearing seat 102, and the two adjacent photovoltaic panel frames 2 are connected as a whole through the end shaft 205, so that they can be rotated and adjusted synchronously under the action of the driving device 103.

[0040] Reference Figure 5 , Attachment Figure 7 and attached Figure 8 The cleaning mechanism 4 includes a moving bar seat 401 and a corrugated telescopic tube 402 arranged above the photovoltaic panel 3. The moving bar seat 401 is arranged perpendicular to the two side bars 201, and the corrugated telescopic tube 402 is vertically connected to the middle of the moving bar seat 401, and a flexible brush strip 405 that interacts with the surface of the photovoltaic panel 3 is arranged on the lower surface of the moving bar seat 401. Slide blocks 403 are arranged at both ends of the moving bar seat 401, and then linear grooves 206 that match the corresponding slide blocks 403 are opened on the two side bars 201, and the linear grooves 206 are arranged parallel to the corrugated telescopic tube 402. A sliding rod 207 that interacts with the slide block 403 is fixedly installed in the linear groove 206, and then an elastic member 208 is arranged between the slide block 403 and the end wall of the linear groove 206, and the specific elastic member 208 can be a spring or an elastic rope. One end of the bellows expansion tube 402 is sealed and fixedly connected to the movable bar seat 401, and the other end extends to the end bar 202 and is fixedly connected thereto. Then, a curved pipe 404 extending from the lower end of the end bar 202 is connected to the end of the bellows expansion tube 402, and finally the curved pipe 404 is connected to the water supply assembly 5.

[0041] Reference Figure 1 and attached Figure 2 The water supply assembly 5 in this embodiment includes a water pump 501 and a water main pipe 502, and a branch hose 503 corresponding to each cleaning mechanism 4 is connected to the water main pipe 502, and the end of the branch hose 503 is connected to the elbow 404.

[0042] The self-cleaning solar photovoltaic panel disclosed in this embodiment 1 starts an automatic cleaning action after running for a period of time. First, the driving device 103 is controlled to rotate and tilt all photovoltaic panel frames 2 and photovoltaic panels 3 at a certain angle, and the side of the end bar 202 connected to the bellows telescopic tube 402 is located at the top, and then the water pump 501 is started to fill tap water into the bellows telescopic tubes 402 in all cleaning mechanisms 4 at the same time.

[0043] Under the action of tap water, the bellows expansion tube 402 will be forced to stretch and extend, and then under the action of the extension of the bellows expansion tube 402, it will overcome the action of the elastic member 208 and push the movable bar seat 401 to move downward from the top of the photovoltaic panel frame 2, and in the process of its movement, the dust and impurities on the surface of the photovoltaic panel 3 will be brushed by the flexible brush strip 405 on the lower surface of the movable bar seat 401 until the dust and impurities are discharged from the cleaning gap below.

[0044] Then turn off the water pump 501 or start the water pump 501 in reverse to pump water. At this time, the corrugated expansion tube 402 will retract under the action of the restoring force of the elastic member 208, and the moving bar seat 401 will be moved back and reset during the retraction process. In the process of moving back and resetting, the surface of the photovoltaic panel 3 will be brushed for the second time by the flexible brush strip 405 until the dust and impurities are discharged from the cleaning gap above, thereby completing the automatic cleaning action of the photovoltaic panel surface. Example 2

[0045] Embodiment 2 discloses a self-cleaning solar photovoltaic panel based on the technical solution in Embodiment 1, with an improved design of the cleaning mechanism 4. The similarities between the self-cleaning solar photovoltaic panel and Embodiment 1 will not be described again.

[0046] Reference Figure 5 ~Attached Fig.10 In this embodiment 2, the flexible brush strip 405 is arranged in the middle position of the lower surface of the moving strip seat 401, and then a flushing mechanism and a scraping mechanism are arranged on the moving strip seat 401 on both sides of the flexible brush strip 405. The flushing mechanism includes a strip water storage chamber 406 opened inside the moving strip seat 401, and the strip water storage chamber 406 is connected to the end of the corrugated telescopic tube 402. A row of liquid outlet channels 4061 are arranged on the lower end of the strip water storage chamber 406, facing the surface of the photovoltaic panel 3, and then a sealing column 407 is arranged in each liquid outlet channel 4061 to seal it, and the upper ends of all the sealing columns 407 are sealed and penetrate the upper ends of the strip water storage chamber 406, and then a strip plate 408 is commonly connected to the upper ends of all the sealing columns 407 extending out of the strip water storage chamber 406, and guide columns 413 are arranged at both ends of the strip plate 408. In addition, a one-way valve 409 is also provided at the end position where the bend pipe 404 is connected to the branch hose 503 , so that the flushing water entering the bellows expansion tube 402 cannot flow back into the water supply assembly 5 .

[0047] A slot is provided on the movable bar seat 401 on the opposite side of the strip water storage chamber 406, and a scraper 410 is provided through the slot from top to bottom. A rotating lever 411 is connected between the upper end of the scraper 410 and the strip plate 408, and a lever support 412 connected to the rotating lever 411 is provided on the upper surface of the movable bar seat 401.

[0048] In addition, reciprocating guide grooves 209 aligned with each other are provided on the two side strips 201. The reciprocating guide grooves 209 are arranged above the straight grooves 206 and interact with the guide columns 413 at both ends of the strip plate 408 respectively. At the same time, the reciprocating guide grooves 209 are connected in sequence by two upper and lower parallel straight segments 2091 and oblique connecting segments 2092 at both ends to form a closed loop.

[0049] During the process of the bellows expansion tube 402 being filled with water to extend, the movable bar seat 401 moves in the direction away from the bellows expansion tube 402, and at this time, the guide column 413 interacts with the straight section 2091 below the reciprocating guide groove 209, so that the blocking column 407 is inserted into the liquid outlet channel 4061 to seal it. When the bellows expansion tube 402 is extended to the longest, the guide column 413 will move to the end of the upper straight section 2091 under the action of the oblique connecting section 2092, and then during the process of the bellows expansion tube 402 retracting and resetting, the guide column 413 will move along the upper straight section 2091, and at this time, the blocking column 407 will be pulled out of the liquid outlet channel 4061, and then the flushing water will be discharged from the liquid outlet channel 4061 to flush the surface of the photovoltaic panel 3, until the guide column 413 retracts to the shortest position, and then the guide column 413 will move to the end of the lower straight section 2091 under the action of the oblique connecting section 2092 to complete the reset.

[0050] At the same time, when the bellows expansion tube 402 retracts to realize the moving bar seat 401 moving back, due to the action of the rotating lever 411, the scraper 410 will be pressed down from the slot and fit with the surface of the photovoltaic panel, thereby scraping the surface of the photovoltaic panel 3.

[0051] The self-cleaning solar photovoltaic panel disclosed in this embodiment 2 starts a self-cleaning action after running for a period of time. First, the driving device 103 is controlled to rotate and tilt all photovoltaic panel frames 2 and photovoltaic panels 3 at a certain angle, and the side of the end bar 202 connected to the bellows expansion tube 402 is located at the top, and then the water pump 501 is started to fill tap water into the bellows expansion tubes 402 in all cleaning mechanisms 4 at the same time.

[0052] Under the action of running water, the bellows 402 will be forcibly stretched and extended, and then under the action of the extension of the bellows 402, it will overcome the action of the elastic member 208 and push the moving bar seat 401 to move downward from the top of the photovoltaic panel frame 2, and in the process of its movement, the dust and impurities on the surface of the photovoltaic panel 3 will be brushed by the flexible brush strip 405 on the lower surface of the moving bar seat 401 until the dust and impurities are discharged from the cleaning gap below. At the same time, due to the interaction between the guide column 413 and the straight section 2091 below the reciprocating guide groove 209, the blocking column 407 is inserted into the liquid outlet channel 4061 to seal it, and the scraper 410 is also stored in the slot and does not contact the surface of the photovoltaic panel.

[0053] Subsequently, the driving device 103 is controlled to run in the reverse direction, and the photovoltaic panel frame 2 and the photovoltaic panel 3 are rotated in the opposite direction and tilted at a certain angle, and then the water pump 501 is turned off. At this time, the restoring force of the elastic member 208 causes the bellows 402 to retract, and during the retraction process, the flexible brush strip 405 is moved back and reset. Then, during the movement back of the flexible brush strip 405, the blocking column 407 is pulled out of the liquid outlet channel 4061 due to the interaction between the guide column 413 and the straight section 2091 above the reciprocating guide groove 209. At the same time, due to the action of the rotating lever 411, the scraper 410 is pressed down from the slot and fits against the surface of the photovoltaic panel.

[0054] At this time, during the return movement of the movable bar seat 401, the flushing water inside the corrugated expansion tube 402 and the strip water storage chamber 406 cannot flow back to the water supply component 5 due to the existence of the one-way valve 409, and can only be compressed and discharged from the liquid outlet channel 4061 and flushed on the surface of the photovoltaic panel, and then the flexible brush strip 405 is used to brush the flushed surface of the photovoltaic panel for the second time, and finally the scraper 410 can scrape off the accumulated water and stains on the surface of the photovoltaic panel after the second brushing, so that the dirt and impurities on the surface of the photovoltaic panel that are difficult to remove are cleaned, ensuring the cleaning effect of the surface of the photovoltaic panel after cleaning, and improving the subsequent photoelectric conversion efficiency of the photovoltaic panel.

[0055] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A self-cleaning solar photovoltaic panel, comprising a photovoltaic panel frame rotatably mounted on a bracket assembly, wherein a photovoltaic panel is mounted in the photovoltaic panel frame, characterized in that: A cleaning mechanism located above the photovoltaic panel is provided in the photovoltaic panel frame, the cleaning mechanism comprising a moving bar seat and a corrugated telescopic tube, a sliding guide mechanism is provided between the two ends of the moving bar seat and the side bars on the photovoltaic panel frame, and an elastic member for resetting the moving bar seat is provided in the sliding guide mechanism, one end of the corrugated telescopic tube is connected to the moving bar seat, and the other end is fixedly connected to the photovoltaic panel frame, and the fixed connection end of the corrugated telescopic tube is connected to a water supply component; A flexible brush strip is provided at the lower end of the movable bar seat, and a flushing mechanism and a scraping mechanism are respectively provided in the movable bar seats on both sides of the flexible brush strip, the flushing mechanism includes a strip water storage chamber opened in the movable bar seat and connected with the corrugated telescopic tube, a liquid discharge channel is provided at the lower end of the strip water storage chamber, a blocking column arranged through the upper end of the strip water storage chamber is provided in the liquid discharge channel, and the upper ends of the blocking columns are commonly connected with a strip plate, guide columns are provided at both ends of the strip plate, and a reciprocating guide groove acting on the guide column is provided on the side bar of the photovoltaic panel frame, the reciprocating guide groove is composed of two upper and lower parallel straight line segments and oblique connecting segments at both ends connected in sequence, the scraping mechanism includes a scraper arranged through the movable bar seat up and down, the upper end of the movable bar seat is rotatably connected with a rotating lever, and the two ends of the rotating lever are respectively connected with the scraper and the strip plate.

2. The self-cleaning solar photovoltaic panel according to claim 1, characterized in that: The sliding guide mechanism includes sliding hole blocks arranged at both ends of the moving bar seat, a linear groove that interacts with the sliding hole block is opened on the side bar located below the reciprocating guide groove, and a sliding rod that serves as a sliding guide for the sliding hole block is arranged in the linear groove, and the elastic member is connected between the sliding hole block and the end wall of the linear groove.

3. The self-cleaning solar photovoltaic panel according to claim 2, characterized in that: The elastic member is a spring or an elastic rope.

4. The self-cleaning solar photovoltaic panel according to claim 1, characterized in that: The fixed connection end of the bellows expansion tube is connected with a bend extending out from the lower end of the photovoltaic panel frame, and a one-way valve is arranged at the position where the bend is connected to the water supply component.

5. The self-cleaning solar photovoltaic panel according to claim 1, characterized in that: The photovoltaic panel frame includes two left and right parallel side bars and two upper and lower parallel end bars. The side bars and end bar tails are vertically connected in sequence to form a rectangular frame, and a bracket is provided at the lower end of the rectangular frame. The photovoltaic panel is installed on the bracket, and cleaning gaps are reserved between the photovoltaic panel and the two end bars.

6. The self-cleaning solar photovoltaic panel according to claim 5, characterized in that: The support assembly includes a plurality of columns arranged side by side at equal intervals, a bearing seat is arranged on the top of each column, a plurality of photovoltaic panel frames are rotatably arranged between two adjacent bearing seats, and a driving device for driving all photovoltaic panel frames to rotate synchronously is arranged on the column at the end.

7. The self-cleaning solar photovoltaic panel according to claim 6, characterized in that: The lower end of the bracket is fixedly connected with a frame bar, and both ends of the frame bar are provided with end shafts rotatably connected to the bearing seat, and a plurality of photovoltaic panel frames are connected as a whole through the end shafts.

8. The self-cleaning solar photovoltaic panel according to claim 6, characterized in that: The water supply assembly includes a water pump and a water main pipe, one end of the water main pipe is connected to the water pump, and a plurality of branch hoses are connected to the water main pipe, and the end of each branch hose is connected to the corrugated telescopic pipe in the corresponding cleaning mechanism.

9. The self-cleaning solar photovoltaic panel according to claim 1, characterized in that: The movable bar seat is provided with an insertion slot, the scraper is arranged along the insertion slot and penetrates the movable bar seat, and the upper end of the movable bar seat is provided with a lever support connected with a rotating lever.

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