An automatic photovoltaic cleaning robot based on power generation efficiency

Abstract

The utility model discloses an automatic photovoltaic cleaning robot based on power generation efficiency belongs to photovoltaic cleaning robot technical field, include: drive part, drive part installs on photovoltaic support, and drive part is connected with the output circuit electricity of photovoltaic board, base frame, base frame installs on drive part, and drive part drives reciprocating movement along photovoltaic support, and the opening of base frame is towards photovoltaic board, cleaning assembly, cleaning assembly installs inside base frame, and cleans photovoltaic board in the process that base frame reciprocating movement along photovoltaic support, wherein, when the output current of photovoltaic board is less than the set threshold value, drive part starts, the utility model discloses can start cleaning automatically when the current is less than the set threshold value, directly correlates photovoltaic board actual working condition, avoids the invalid operation caused by the timing cleaning or manual judgment start in the prior art, also can avoid starting cleaning when power generation efficiency does not obviously drop, causes the waste and equipment wear and tear.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic cleaning robot technology, specifically to an automatic photovoltaic cleaning robot based on power generation efficiency. Background Technology

[0002] With the rapid development of photovoltaic power generation technology, the scale of photovoltaic power plants is constantly expanding. However, the impact of contaminants on the surface of photovoltaic modules (such as dust, bird droppings, leaves, etc.) on power generation efficiency is becoming increasingly significant. Studies have shown that dirt on the surface of photovoltaic panels can lead to a decrease in power generation efficiency of 4% to 8%, and even more than 15% in extreme environments.

[0003] Traditional photovoltaic (PV) cleaning methods often employ manual, periodic cleaning or automated cleaning schemes based on fixed time intervals. However, manual judgment of cleaning needs is easily influenced by subjective experience and environmental factors, leading to issues such as delayed response or over-cleaning. Fixed-cycle cleaning may result in resource waste or untimely cleaning due to environmental differences (such as rainfall and pollution rates). For example, initiating cleaning before a significant decrease in power generation efficiency not only wastes water and energy but may also accelerate equipment wear due to frequent operation.

[0004] To address the aforementioned problems, this invention provides an automated photovoltaic cleaning robot based on power generation efficiency. Utility Model Content

[0005] To address the aforementioned technical shortcomings, the purpose of this utility model is to provide an automatic photovoltaic cleaning robot based on power generation efficiency. This robot can automatically start cleaning when the current is less than a set threshold, directly linking to the actual working status of the photovoltaic panels. This avoids the ineffective operations caused by timed cleaning or manual judgment in the prior art, and also avoids waste and equipment wear caused by starting cleaning when the power generation efficiency has not decreased significantly.

[0006] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: This utility model provides an automatic photovoltaic cleaning robot based on power generation efficiency, comprising: A drive unit is mounted on a photovoltaic bracket and is electrically connected to the output circuit of the photovoltaic panel. A base frame is mounted on a drive unit and driven by the drive unit to reciprocate along the photovoltaic support, with the opening of the base frame facing the photovoltaic panel; A cleaning component is installed inside the base frame and cleans the photovoltaic panels as the base frame reciprocates along the photovoltaic support. The drive unit starts when the output current of the photovoltaic panel is less than a set threshold.

[0007] Preferably, the driving unit includes: Two fixing frames are located on both sides of the photovoltaic panel and are installed on the photovoltaic bracket. The two fixing frames have openings on their opposite sides. Two screws are respectively rotatably mounted inside two fixed frames and driven by corresponding motors; The base frame has fixing blocks installed at both ends, and the two fixing blocks are threadedly connected to two screws respectively.

[0008] Preferably, the motor is electrically connected to a control module mounted on a fixed frame, and the control module is electrically connected to an ammeter mounted on the output circuit of the photovoltaic panel and a photoelectric sensor mounted on the fixed frame.

[0009] Preferably, the cleaning component includes: A water spray pipe is fixedly installed inside the base frame, and a water spray nozzle is provided on the side of the water spray pipe facing the photovoltaic panel. An inlet pipe is fixedly installed on the water spray pipe, and the inlet pipe extends through the base frame to the outside of the base frame.

[0010] Preferably, the cleaning component further includes: Two scrapers are installed inside the base frame and located on both sides of the water spray pipe for scraping the photovoltaic panel. The scrapers are made of elastic rubber.

[0011] Preferably, the two scrapers are slidably installed inside the base frame. As the base frame moves along the photovoltaic support, the scraper on the side away from the direction of movement moves toward the photovoltaic panel and presses against the photovoltaic panel, while the scraper on the side closer to the direction of movement moves away from the photovoltaic panel.

[0012] Preferably, a sliding rod is fixedly installed on the side of the scraper away from the photovoltaic panel. The two ends of the sliding rod extend to the outside of the base frame through through slots provided on the base frame. The end of the sliding rod located outside the base frame is set as an inclined surface. The two ends of the fixed frame are fixedly connected to top rods that are adapted to the sliding rod.

[0013] Preferably, a damper is provided between the slide bar and the through groove.

[0014] Preferably, a rotating frame is rotatably installed inside both ends of the base frame, and a connecting rod is slidably installed at both ends of the rotating frame, with each end of the connecting rod hinged to two sliding rods.

[0015] Preferably, the scraper is provided with a suction frame for sucking up sewage on the side facing the water spray pipe, and the suction frame is connected to an external negative pressure suction device through the frame body.

[0016] The beneficial effects of this utility model are as follows: This invention achieves electrical connection between the control module, the photoelectric sensor, and the ammeter installed on the output circuit of the photovoltaic panel through the setting of the control module and the photoelectric sensor. When the current is less than the set threshold, the cleaning is automatically started, which is directly related to the actual working status of the photovoltaic panel. This avoids the invalid operation caused by timed cleaning or manual judgment of the start in the prior art. It saves energy consumption and can clean in time when the power generation efficiency is affected, thus ensuring the power generation benefits.

[0017] This invention utilizes a water spray pipe, scrapers, and a suction frame to achieve directional water spraying. Combined with elastic rubber scrapers on both sides, it achieves coordinated cleaning through wetting and scraping, effectively removing dust and stains. The elasticity of the rubber scrapers prevents scratching the photovoltaic panel surface. As the frame moves, the scraper extends away from the direction of movement, ensuring that the photovoltaic panel is scraped after water spraying, guaranteeing a thorough cleaning. The suction frame promptly removes wastewater generated during cleaning, preventing wastewater residue on the photovoltaic panel surface and the formation of watermarks or stains after drying. This ensures that the photovoltaic panel maintains high light transmittance after cleaning, guaranteeing power generation efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the present invention (first perspective).

[0020] Figure 2 This is a schematic diagram of the structure of the present invention (second perspective).

[0021] Figure 3 This is an exploded view of the base frame, scraper, suction frame, and spray pipe of this utility model.

[0022] Figure 4 This is a cross-sectional view of the base frame of this utility model.

[0023] Figure 5 This is a schematic diagram of the slide bar and top bar of this utility model.

[0024] Figure 6 This is a schematic diagram showing the connection of the rotating frame, connecting rod, and sliding rod of this utility model.

[0025] Explanation of reference numerals in the attached figures: 1. Base frame, 2. Fixing frame, 3. Screw, 4. Motor, 5. Fixing block, 6. Control module, 7. Photoelectric sensor, 8. Water spray pipe, 9. Scraper, 10. Sliding rod, 11. Through groove, 12. Top rod, 13. Rotating frame, 14. Connecting rod, 15. Suction frame, 16. Frame body. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] This invention provides an automated photovoltaic cleaning robot based on power generation efficiency, such as... Figures 1 to 6 As shown.

[0028] Example 1: An automated photovoltaic cleaning robot based on power generation efficiency includes a drive unit, a base frame 1, and cleaning components. The drive unit, mounted on the photovoltaic support, drives the base frame 1 to move along the photovoltaic support. The drive unit includes two fixed frames 2, located on opposite sides of the photovoltaic panel and installed along the edges of the photovoltaic support. The base frame 1 is positioned between the two fixed frames 2, and the length of each fixed frame 2 is greater than the length of the photovoltaic panel. This design ensures that the base frame 1 does not obstruct the photovoltaic panel when not cleaning, thus preventing any impact on the photovoltaic panel's power generation efficiency.

[0029] Both fixed frames 2 have openings on their opposite sides, allowing the ends of the base frame 1 to extend into the fixed frame 2. A screw 3 is rotatably mounted inside each fixed frame 2, with one end of the screw 3 fixedly connected to the output shaft of a motor 4 fixed to the end of the fixed frame 2. When the motor 4 starts, it drives the screw 3 to rotate synchronously. Fixed blocks 5 are fixedly connected to both ends of the base frame 1. The two fixed blocks 5 pass through the openings of the two fixed frames 2 and are threadedly connected to the corresponding screw 3. When the screw 3 rotates, the fixed blocks 5 can move along the axis of the screw 3, thereby driving the base frame 1 to reciprocate along the photovoltaic support. A cleaning component is installed inside the base frame 1 to clean the photovoltaic panels during the movement of the base frame 1.

[0030] Motor 4 is electrically connected to control module 6, which is fixed to the outer wall of fixed frame 2. Control module 6 is also electrically connected to photoelectric sensor 7 installed on fixed frame 2 and ammeter installed in the output circuit of photovoltaic panel. Photoelectric sensor 7 is used to detect the intensity of external light, and ammeter is used to monitor the output current of photovoltaic panel in real time. When the output current is less than the threshold preset by control module 6, and photoelectric sensor 7 detects that the intensity of external light is not weak (i.e., the light intensity and output current are not matched), it means that dust accumulation on the surface of photovoltaic panel has reduced power generation efficiency. At this time, control module 6 sends a start signal to motor 4, motor 4 drives screw 3 to rotate, and base frame 1 begins to move along photovoltaic support. Since the base frame 1 moves the same length each time, motor 4 will drive screw 3 to rotate clockwise a specified number of times and then drive screw 3 to rotate counterclockwise a specified number of times each time it starts, so that base frame 1 moves back and forth along photovoltaic support once, thus achieving cleaning.

[0031] Example 2: This embodiment, based on Embodiment 1, provides a detailed description of the structure and working principle of the cleaning component. The cleaning component includes a water spray pipe 8 and two scrapers 9. The water spray pipe 8 is fixedly installed inside the base frame 1. Multiple water nozzles are evenly distributed on the side of the water spray pipe 8 facing the photovoltaic panel. A water inlet pipe is welded to one end of the water spray pipe 8. The end of the water inlet pipe away from the water spray pipe 8 extends through the side wall of the base frame 1 to the outside and is connected to an external water supply device via a hose. When the base frame 1 is started, the water supply device supplies water to the water spray pipe 8 through the water inlet pipe. The water flow is sprayed out from the nozzles and evenly sprayed onto the surface of the photovoltaic panel, wetting and softening the dust.

[0032] Two scrapers 9 are located on both sides of the water spray pipe 8 and are installed inside the base frame 1 via a sliding structure. Two parallel sliding rods 10 are welded to the side of the scraper 9 away from the photovoltaic panel. Through slots 11 adapted to the sliding rods 10 are provided on both side walls of the base frame 1. The two ends of the sliding rods 10 extend through the through slots 11 to the outside of the base frame 1, and the ends of the sliding rods 10 outside the base frame 1 are machined into bevels. Top rods 12 adapted to the bevels of the sliding rods 10 are welded to both ends inside the fixed frame 2.

[0033] The scraper 9 is made of elastic rubber, which can not only fit tightly to the surface of the photovoltaic panel through deformation to effectively scrape away the wet dust and stains, but also avoid scratching the coating on the surface of the photovoltaic panel.

[0034] When the base frame 1 moves to one end of the photovoltaic panel, the inclined surface of the slide rod 10 near that end will contact the top rod 12. The top rod 12 pushes the slide rod 10 along the through groove 11 towards the photovoltaic panel, causing the scraper 9 away from the direction of movement to press against the surface of the photovoltaic panel. At the same time, the scraper 9 on the other side will move away from the photovoltaic panel, so that as the base frame 1 moves towards the other end of the photovoltaic panel, the scraper 9 away from the direction of movement can scrape the photovoltaic panel. This arrangement allows the water sprayed from the water pipe 8 to first wet the stains, and then the pressing scraper 9 to scrape away the stains, with both working together to improve the cleaning effect. Example 3: This embodiment further illustrates the linkage structure of scraper 9 and the sewage recycling mechanism based on embodiment 2.

[0035] A rotating frame 13 is rotatably mounted at both ends inside the base frame 1. Each end of the rotating frame 13 has a sliding hole, and a connecting rod 14 is slidably mounted within the sliding hole. The two ends of the connecting rod 14 are hinged to two sliding rods 10 respectively. When one sliding rod 10 is pushed by the top rod 12, causing the scraper 9 to move towards the photovoltaic panel, the scraper 10 drives the rotating frame 13 to rotate via the connecting rod 14. The connecting rod 14 at the other end of the rotating frame 13 pulls the other sliding rod 10 away from the photovoltaic panel, achieving reverse linkage between the two scrapers 9. This ensures that during movement, the scraper 9 away from the direction of movement presses against the photovoltaic panel, while the scraper 9 closer to the direction of movement does not contact the photovoltaic panel.

[0036] A damper is installed at the contact point between the slide rod 10 and the through groove 11, which can prevent the slide rod 10 and the scraper 9 from sliding without the action of external force. This allows the scraper 9, which is pressed against the photovoltaic panel, to continue to press against the photovoltaic panel during the movement, while the scraper 9, which is not in contact with the photovoltaic panel, will always not be in contact with the photovoltaic panel.

[0037] In addition, a suction frame 15 is fixedly installed on the side of each scraper 9 facing the water spray pipe 8. The suction frame 15 has an opening on the side facing the photovoltaic panel, and the suction frame 15 is connected to an external negative pressure suction device (such as a vacuum pump) through the frame body 16. When the scraper 9 scrapes away the stains, the wastewater will flow along the surface of the photovoltaic panel. At this time, the negative pressure suction device generates negative pressure in the suction frame 15 through the frame body 16, and the suction port sucks in the wastewater in time and discharges it, avoiding the wastewater residue on the surface of the photovoltaic panel. The wetting of the water spray pipe 8, the scraping of the scraper 9, and the suction of the suction frame 15 form a continuous synergistic effect: first, the stains are moistened and softened, then the stains are mixed with water by the scraper 9 to form wastewater, and finally the wastewater is removed by the suction frame 15, which completely avoids the formation of watermarks after drying and ensures the light transmittance of the photovoltaic panel.

[0038] The control module 6 and the photoelectric sensor 7 are both existing technologies, and their structure and working principle are not the technical features of this utility model. Therefore, this utility model will not elaborate on them. For example, the control module 6 can be an S7-1500 PLC module, and the photoelectric sensor 7 can be an E3Z-LS63 model.

[0039] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. An automated photovoltaic cleaning robot based on power generation efficiency, characterized in that, include: A drive unit is mounted on a photovoltaic bracket and is electrically connected to the output circuit of the photovoltaic panel. The base frame (1) is mounted on the drive unit and driven by the drive unit to reciprocate along the photovoltaic bracket, and the opening of the base frame (1) faces the photovoltaic panel; A cleaning component is installed inside the base frame (1) and cleans the photovoltaic panels as the base frame (1) reciprocates along the photovoltaic support. Specifically, the drive unit starts when the output current of the photovoltaic panel is less than a set threshold. The drive unit includes: Two fixed frames (2) are located on both sides of the photovoltaic panel and are installed on the photovoltaic bracket. The two fixed frames (2) have openings on their opposite sides. Two screws (3) are respectively rotatably installed inside two fixed frames (2) and driven by corresponding motors (4); Among them, the base frame (1) is equipped with fixing blocks (5) at both ends, and the two fixing blocks (5) are respectively threaded to the two screws (3); The motor (4) is electrically connected to the control module (6) mounted on the fixed frame (2), and the control module (6) is electrically connected to the ammeter mounted on the output circuit of the photovoltaic panel and the photoelectric sensor (7) mounted on the fixed frame (2).

2. The automated photovoltaic cleaning robot based on power generation efficiency as described in claim 1, characterized in that, The cleaning component includes: A water spray pipe (8) is fixedly installed inside the base frame (1), and a water spray nozzle is provided on the side of the water spray pipe (8) facing the photovoltaic panel. A water inlet pipe is fixedly installed on the water spray pipe (8), and the water inlet pipe extends through the base frame (1) to the outside of the base frame (1).

3. The automated photovoltaic cleaning robot based on power generation efficiency as described in claim 2, characterized in that, The cleaning component also includes: Two scrapers (9) are installed inside the base frame (1) and located on both sides of the water spray pipe (8) for scraping the photovoltaic panel. The scrapers (9) are made of elastic rubber.

4. The automated photovoltaic cleaning robot based on power generation efficiency as described in claim 3, characterized in that, The two scrapers (9) are slidably installed inside the base frame (1). During the movement of the base frame (1) along the photovoltaic support, the scraper (9) on the side away from the direction of movement moves toward the photovoltaic panel and presses against the photovoltaic panel, while the scraper (9) on the side close to the direction of movement moves away from the photovoltaic panel.

5. The automated photovoltaic cleaning robot based on power generation efficiency as described in claim 4, characterized in that, A sliding rod (10) is fixedly installed on the side of the scraper (9) away from the photovoltaic panel. The two ends of the sliding rod (10) extend to the outside of the base frame (1) through the through groove (11) provided on the base frame (1). The end of the sliding rod (10) located outside the base frame (1) is set as an inclined surface. The two ends of the fixed frame (2) are fixedly connected to the top rod (12) that is compatible with the sliding rod (10).

6. The automated photovoltaic cleaning robot based on power generation efficiency as described in claim 5, characterized in that, A damper is provided between the slide bar (10) and the through groove (11).

7. An automated photovoltaic cleaning robot based on power generation efficiency as described in claim 5, characterized in that, The base frame (1) has rotating frames (13) installed inside both ends, and connecting rods (14) are slidably installed at both ends of the rotating frames (13). The two ends of the connecting rods (14) are respectively hinged to two sliding rods (10).

8. The automatic photovoltaic cleaning robot based on power generation efficiency as described in claim 3, characterized in that, The scraper (9) is provided with a suction frame (15) for sucking up sewage on the side facing the water spray pipe (8). The suction frame (15) is connected to the negative pressure suction device in the outside through the frame body (16).

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