A device for fault inspection of photovoltaic panels of a solar photovoltaic power plant

Abstract

This invention discloses a fault inspection device for photovoltaic panels in a solar photovoltaic power station, relating to the field of photovoltaic technology. It includes an inspection drone, with a propeller at the top and support wheels at the bottom. An inspection infrared sensor is fixedly connected to the bottom of the drone, and a protective mechanism is provided at the bottom. By providing this protective mechanism, during use, when the drone takes off with its propeller activated, it flies at high altitude and performs infrared inspections of the photovoltaic panels below using the inspection infrared sensor. During rapid flight, the outer wall of the inspection infrared sensor is protected by several fixed sleeves and sliding rods, preventing airborne particulate dust from impacting the sensor and causing scratches or reduced accuracy.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic technology, specifically to a fault inspection device for photovoltaic panels in a solar photovoltaic power station. Background Technology

[0002] Photovoltaic power generation is a technology that uses the photovoltaic effect at the semiconductor interface to directly convert light energy into electrical energy. It consists of solar panels, controllers, and inverters. Its core components are formed by doping silicon atoms to create P-type and N-type semiconductors. When exposed to light, a potential difference is generated at the PN junction to form a current. After being combined with the battery modules, the current is converted into alternating current by the inverter.

[0003] The patent application with publication number CN121333228A describes a fault inspection device for photovoltaic panels in a solar photovoltaic power station. Specifically, it includes a frame and an infrared scanner. The upper side of the frame is provided with a toothed plate for supporting the infrared scanner, and the lower side of the frame is provided with a drive assembly for driving the frame to move linearly along the surface of the photovoltaic panel. An adjustment assembly is provided between the toothed plate and the frame. The adjustment assembly includes ear plates fixedly connected to the outer surface of the upper end of the frame, and a passive shaft is rotatably connected between two sets of ear plates.

[0004] During high-speed flight, particulate dust in the air is prone to impacting the surface of the infrared probe, causing scratches, reduced light transmittance, and decreased thermal imaging accuracy, which directly affects the accuracy of photovoltaic panel defect detection. Traditional fixed protective covers cannot dynamically adjust the protective density according to the flight speed, and high-speed airflow will carry tiny dust particles through the protective gaps. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a fault inspection device for photovoltaic panels in solar photovoltaic power plants, thereby solving the aforementioned problems.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: a fault inspection device for photovoltaic panels in a solar photovoltaic power station, comprising an inspection drone, wherein the top of the inspection drone is provided with a propeller, the bottom of the inspection drone is provided with support wheels, an inspection infrared probe is fixedly connected to the bottom of the inspection drone, and a protective mechanism is provided at the bottom of the inspection drone. The protective mechanism includes: The fixed sleeve is an arc-shaped sleeve structure. A bearing ring is fixedly connected to the top of the fixed sleeve. The top of the bearing ring is rotatably connected to the bottom of the inspection drone. A sliding rod is slidably connected to the inner wall of the fixed sleeve. The counterweight is a circular disc-shaped structure. One side of the counterweight is fixedly connected to the end of the sliding rod away from the fixed sleeve. A blade is fixedly connected to one side of the fixed sleeve, and the blade is inclined.

[0007] Preferably, the outer wall of the blade is provided with a reflective groove, the reflective groove is rectangular, and a second brush is fixedly connected to one side of the sliding rod.

[0008] Preferably, a first brush bristle is fixedly connected to one side of the fixed sleeve, and an air inlet and an air outlet are provided on the outer wall of the fixed sleeve.

[0009] Preferably, the interior of the air outlet is connected to the interior of the fixed sleeve, and the interior of the air inlet is connected to the interior of the fixed sleeve.

[0010] Preferably, the outer wall of the counterweight is provided with an auxiliary mechanism, the auxiliary mechanism including a first rotating ball, the first rotating ball being rotatably connected to the outer wall of the counterweight, and an elastic strip being fixedly connected to the outer wall of the first rotating ball.

[0011] Preferably, one end of the elastic strip is fixedly connected to a second rotating ball, and the second rotating ball is rotatably connected to the outer wall of another counterweight.

[0012] Preferably, a first sliding rod is fixedly connected to the outer wall of the third rotating ball, and a protective sleeve is slidably connected to the outer wall of the first sliding rod.

[0013] Preferably, a second sliding rod is slidably connected to the inner wall of the protective sleeve, and a fourth rotating ball is fixedly connected to one end of the second sliding rod.

[0014] Preferably, the first slide rod and the second slide rod are both arc-shaped rod structures, and the protective sleeve is an arc-shaped sleeve structure.

[0015] Preferably, the elastic strip is made of elastic material, and the curvature of the sliding rod and the fixed sleeve is the same as the curvature of the surface of the inspection infrared probe.

[0016] This invention provides a fault inspection device for photovoltaic panels in a solar photovoltaic power station. It has the following beneficial effects: 1. By setting up a protective mechanism, when the inspection drone is flying at high speed, the outer wall of the inspection infrared probe is protected by several fixed sleeves and sliding rods to disperse and protect the inspection infrared probe, preventing airborne particulate dust from hitting the inspection infrared probe during flight, which would cause scratches on the surface of the inspection infrared probe or a decrease in accuracy. 2. By setting up a protective mechanism, each blade is driven by air to rotate the bearing ring, and the fixed sleeve and sliding rod also start to rotate synchronously. At this time, the rotating sliding rod will increase the protection of the inspection infrared probe and form an airflow barrier to further block dust intrusion. When the flight speed decreases, the sliding rod will re-deploy under the counterweight of its counterweight block to continuously provide dynamic protection. This structure does not require additional energy to drive and can adaptively adjust according to the flight speed. 3. By setting up a protective mechanism, the sliding rod can be pushed into the fixed sleeve without obstruction. However, when the flight speed gradually slows down, the sliding rod will be smoothly reset under the combined action of the counterweight and the negative pressure of the air inlet. This avoids the vibration and impact caused by the sliding rod resetting too quickly when the inspection drone decelerates, and ensures that the infrared probe of the infrared lens is in a stable working state throughout the inspection process. 4. By setting up a protective mechanism, the present invention can brush the surface of the inspection infrared probe in real time with the first and second brushes when the fixed sleeve and sliding rod rotate, reducing dust adhesion and improving the clarity of infrared imaging. The first and second brushes are made of soft material. At the same time, the inner wall of the fixed sleeve is provided with a groove, which allows the sliding rod to slide into the fixed sleeve with the second brush, providing space for the second brush and avoiding the problem that the sliding rod cannot slide into the fixed sleeve because of the second brush. 5. By setting up a protective mechanism, the reflective grooves on the outer wall of the blade reflect light in real time when the blade rotates, allowing the operator below to directly observe the operating position and status of the device. At the same time, it plays a visual deterrent role against other birds in the air, significantly reducing the risk of bird strikes and further protecting the flight safety of the inspection drone and the inspection infrared sensor. 6. By setting up an auxiliary mechanism, the invention reduces the risk of scratching the surface of the inspection infrared probe through its own rotation, ensuring the cleaning of adhering impurities while reducing physical damage to the infrared lens and inspection infrared probe. The third rotating ball, the first sliding rod, and the second sliding rod are also driven to rise and retract into the protective sleeve at the same time, so that when the inspection is carried out at high speed, the sliding rod, the fixed sleeve, the protective sleeve, and the first sliding rod retract synchronously to avoid interference with infrared detection. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the protective mechanism of the present invention. Figure 1 ; Figure 3 This is a schematic diagram of the protective mechanism of the present invention. Figure 2 ; Figure 4 This is a schematic diagram of the protective mechanism of the present invention. Figure 3 ; Figure 5 This is a schematic diagram of the protective mechanism of the present invention. Figure 4 ; Figure 6 For the present invention Figure 2 Enlarged view of point A; Figure 7 For the present invention Figure 4 Enlarged view of point B; Figure 8 For the present invention Figure 4Enlarged view of point C.

[0018] In the diagram: 1. Inspection drone; 2. Propeller; 3. Protective mechanism; 301. Fixing sleeve; 302. Sliding rod; 303. Counterweight; 304. Blade; 305. Reflector groove; 306. First brush bristle; 307. Second brush bristle; 308. Air inlet; 309. Air outlet; 310. Bearing ring; 4. Auxiliary mechanism; 401. First rotating ball; 402. Elastic strip; 403. Second rotating ball; 404. Third rotating ball; 405. First sliding rod; 406. Protective sleeve; 407. Second sliding rod; 408. Fourth rotating ball; 5. Inspection infrared sensor; 6. Support wheel. Detailed Implementation

[0019] Example 1: Please refer to Figure 1-3 The present invention provides a technical solution: a fault inspection device for photovoltaic panels in a solar photovoltaic power station, including an inspection drone 1, a propeller 2 on the top of the inspection drone 1, a support wheel 6 on the bottom of the inspection drone 1, an inspection infrared probe 5 fixedly connected to the bottom of the inspection drone 1, and a protective mechanism 3 on the bottom of the inspection drone 1. Protective mechanism 3 includes: Fixed sleeve 301, fixed sleeve 301 is an arc-shaped sleeve structure, fixedly connected to the top of fixed sleeve 301 is a bearing ring 310, the top of bearing ring 310 is rotatably connected to the bottom of inspection drone 1, and a sliding rod 302 is slidably connected to the inner wall of fixed sleeve 301. The counterweight 303 is a circular disc structure. One side of the counterweight 303 is fixedly connected to the end of the sliding rod 302 away from the fixed sleeve 301. A blade 304 is fixedly connected to one side of the fixed sleeve 301. The blade 304 is inclined.

[0020] When in use, when the inspection drone 1 starts the propeller 2 to take off, the inspection drone 1 flies to a high altitude and flies quickly, and performs infrared inspection on the photovoltaic panel below through the inspection infrared probe 5. When the inspection drone 1 flies quickly, the outer wall of the inspection infrared probe 5 is protected by several fixed sleeves 301 and sliding rods 302 to prevent particulate dust in the air from hitting the inspection infrared probe 5 during flight, which would cause scratches on the surface of the inspection infrared probe 5 or reduce its accuracy. Example 2: Please refer to Figure 1-6 Based on Embodiment 1, the present invention provides a technical solution: a reflective groove 305 is provided on the outer wall of the blade 304, the reflective groove 305 is a rectangular groove, and a second bristle 307 is fixedly connected to one side of the sliding rod 302.

[0021] The first bristle 306 is fixedly connected to one side of the fixed sleeve 301, and the outer wall of the fixed sleeve 301 is provided with an air inlet 308 and an air outlet 309.

[0022] The interior of the air outlet 309 is connected to the interior of the fixed sleeve 301, and the interior of the air inlet 308 is connected to the interior of the fixed sleeve 301.

[0023] When the inspection drone 1 is flying to inspect, the air rapidly impacts the blades 304 on the outer wall of the fixed sleeve 301. The blades 304 are inclined surfaces, so each blade 304 will be pushed by the air to drive the bearing ring 310 to rotate. The fixed sleeve 301 and the sliding rod 302 also start to rotate synchronously. At this time, the rotating sliding rod 302 will increase the protection of the inspection infrared probe 5 and form an airflow barrier to further block dust intrusion. Meanwhile, when the inspection drone 1 flies at a relatively high speed, the sliding rod 302 and the fixed sleeve 301 rotate faster. As a result, the centrifugal force of the counterweight 303 will cause the sliding rod 302 to be thrown into the fixed sleeve 301. This allows the sliding rod 302 to automatically retract into the fixed sleeve 301 when the rotation speed of the sliding rod 302 and the fixed sleeve 301 is relatively high, reducing wind resistance and enhancing the real-time imaging stability of the infrared sensor 5 inspected by the infrared lens. When the flight speed decreases, the sliding rod 302 will re-deploy under the counterweight of its counterweight 303, continuously providing dynamic protection. This structure does not require additional energy to drive and adapts to the flight speed. When the sliding rod 302 slides into the fixed sleeve 301, the air inside the fixed sleeve 301 is squeezed out through the air outlet 309. When the flight stops, the sliding rod 302 slides out of the fixed sleeve 301, and the airflow is drawn in through the air inlet 308 in the opposite direction. Since the diameter of the air inlet 308 is much smaller than that of the air outlet 309, the sliding rod 302 can be pushed into the fixed sleeve 301 without obstruction. However, when the flight speed gradually slows down, the sliding rod 302 is smoothly reset under the combined action of the counterweight 303 and the negative pressure of the air inlet 308. This avoids the vibration and impact caused by the sliding rod 302 resetting too quickly when the inspection drone 1 decelerates, and ensures that the infrared sensor 5 of the infrared lens inspection is in a stable working state throughout the process. When the fixed sleeve 301 and the sliding rod 302 rotate, the surface of the inspection infrared probe 5 can be brushed in real time by the first brush bristles 306 and the second brush bristles 307, reducing dust adhesion and improving the clarity of infrared imaging. The first brush bristles 306 and the second brush bristles 307 are made of soft material. At the same time, the inner wall of the fixed sleeve 301 is provided with a groove. This groove allows the second brush bristles 307 to slide into the fixed sleeve 301 with the sliding rod 302, providing space for the second brush bristles 307 and preventing the sliding rod 302 from being unable to slide into the fixed sleeve 301 due to the presence of the second brush bristles 307. When the blade 304 rotates, the reflective groove 305 on the outer wall of the blade 304 reflects light in real time, allowing the operator below to directly observe the operating position and status of the device. At the same time, it plays a visual deterrent role against other birds in the air, significantly reducing the risk of bird strikes and further protecting the flight safety of the inspection drone 1 and the inspection infrared sensor 5. Example 3: Please refer to Figure 1-8 Based on Embodiment 1 and Embodiment 2, the present invention provides a technical solution: an auxiliary mechanism 4 is provided on the outer wall of the counterweight 303. The auxiliary mechanism 4 includes a first rotating ball 401, which is rotatably connected to the outer wall of the counterweight 303. An elastic strip 402 is fixedly connected to the outer wall of the first rotating ball 401.

[0024] One end of the elastic strip 402 is fixedly connected to a second rotating ball 403, which is rotatably connected to the outer wall of another counterweight 303.

[0025] The outer wall of the third rotating ball 404 is fixedly connected to the first sliding rod 405, and the outer wall of the first sliding rod 405 is slidably connected to the protective sleeve 406.

[0026] The inner wall of the protective sleeve 406 is slidably connected to a second slide rod 407, and one end of the second slide rod 407 is fixedly connected to a fourth rotating ball 408.

[0027] The first slide bar 405 and the second slide bar 407 are both arc-shaped rod structures, and the protective sleeve 406 is an arc-shaped sleeve structure.

[0028] The elastic strip 402 is made of elastic material, and the curvature of the sliding rod 302 and the fixed sleeve 301 is the same as the surface curvature of the inspection infrared probe 5.

[0029] When each sliding rod 302 retracts into the fixed sleeve 301, the counterweight 303 drives the first rotating ball 401, the elastic strip 402, and the second rotating ball 403 to rise synchronously. The elastic strip 402 scrapes the surface of the inspection infrared probe 5. At the same time, the setting of the first rotating ball 401 and the second rotating ball 403 allows the elastic strip 402 to rotate. When the elastic strip 402 scrapes the surface of the inspection infrared probe 5, its own rotation reduces the risk of scratching the surface of the inspection infrared probe 5, ensuring the cleaning of adhering impurities while reducing physical damage to the infrared lens inspection infrared probe 5. The third rotating ball 404, the first sliding rod 405, and the second sliding rod 407 are also simultaneously driven to rise and retract into the protective sleeve 406, so that when the rapid flight is used for inspection, the sliding rod 302, the fixed sleeve 301, the protective sleeve 406, and the first sliding rod 405 retract synchronously to avoid interference with infrared detection.

[0030] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A fault inspection device for photovoltaic panels in a solar photovoltaic power station, comprising an inspection drone (1), wherein the inspection drone (1) is provided with a propeller (2) on its top, a support wheel (6) is provided on its bottom, and an inspection infrared probe (5) is fixedly connected to the bottom of the inspection drone (1), characterized in that: The inspection drone (1) is equipped with a protective mechanism (3) at its bottom. The protective mechanism (3) includes: Fixed sleeve (301), the fixed sleeve (301) is an arc-shaped sleeve structure, the top of the fixed sleeve (301) is fixedly connected to a bearing ring (310), the top of the bearing ring (310) is rotatably connected to the bottom of the inspection drone (1), and a sliding rod (302) is slidably connected to the inner wall of the fixed sleeve (301). The counterweight (303) is a circular disc structure. One side of the counterweight (303) is fixedly connected to the end of the sliding rod (302) away from the fixed sleeve (301). A blade (304) is fixedly connected to one side of the fixed sleeve (301). The blade (304) is inclined.

2. The fault inspection device for photovoltaic panels in a solar photovoltaic power station according to claim 1, characterized in that: The outer wall of the blade (304) is provided with a reflective groove (305), which is a rectangular groove, and a second bristle (307) is fixedly connected to one side of the sliding rod (302).

3. The fault inspection device for photovoltaic panels in a solar photovoltaic power station according to claim 2, characterized in that: The first bristle (306) is fixedly connected to one side of the fixed sleeve (301), and the outer wall of the fixed sleeve (301) is provided with an air inlet (308) and an air outlet (309).

4. The fault inspection device for photovoltaic panels in a solar photovoltaic power station according to claim 3, characterized in that: The air outlet (309) is connected to the inside of the fixed sleeve (301), and the air inlet (308) is connected to the inside of the fixed sleeve (301).

5. A fault inspection device for photovoltaic panels in a solar photovoltaic power station according to claim 4, characterized in that: The outer wall of the counterweight (303) is provided with an auxiliary mechanism (4), the auxiliary mechanism (4) includes a first rotating ball (401), the first rotating ball (401) is rotatably connected to the outer wall of the counterweight (303), and an elastic strip (402) is fixedly connected to the outer wall of the first rotating ball (401).

6. A fault inspection device for photovoltaic panels in a solar photovoltaic power station according to claim 5, characterized in that: One end of the elastic strip (402) is fixedly connected to a second rotating ball (403), and the second rotating ball (403) is rotatably connected to the outer wall of another counterweight (303).

7. A fault inspection device for photovoltaic panels in a solar photovoltaic power station according to claim 6, characterized in that: The outer wall of the third rotating ball (404) is fixedly connected to the first sliding rod (405), and the outer wall of the first sliding rod (405) is slidably connected to the protective sleeve (406).

8. A fault inspection device for photovoltaic panels in a solar photovoltaic power station according to claim 7, characterized in that: The inner wall of the protective sleeve (406) is slidably connected to a second slide rod (407), and a fourth rotating ball (408) is fixedly connected to one end of the second slide rod (407).

9. A fault inspection device for photovoltaic panels in a solar photovoltaic power station according to claim 8, characterized in that: The first slide bar (405) and the second slide bar (407) are both arc-shaped rod structures, and the protective sleeve (406) is an arc-shaped sleeve structure.

10. A fault inspection device for photovoltaic panels in a solar photovoltaic power station according to claim 9, characterized in that: The elastic strip (402) is made of elastic material, and the curvature of the sliding rod (302) and the fixed sleeve (301) is the same as the surface curvature of the inspection infrared probe (5).

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