A portable photovoltaic cleaning device

Abstract

This utility model relates to a mobile photovoltaic cleaning device, belonging to the field of photovoltaic cleaning technology. It includes a moving track, a moving trolley, and a cleaning mechanism. The moving track is laid parallel to both sides of the top of the photovoltaic shed. The moving trolley consists of two carriages and a crossbeam, spanning the moving track and capable of reciprocating along it. The cleaning mechanism is mounted on the moving trolley and is used to clean and collect contaminants from the surface of the photovoltaic panels. The cleaning mechanism includes a rotating brush roller, a drive motor for driving the rotating brush roller, a lifting actuator for raising and lowering the entire cleaning mechanism, and a dust collection device. This utility model integrates sweeping, suction, and collection. The rotating brush roller is responsible for stripping away dirt, and the high-pressure centrifugal fan generates strong suction. Combined with a flexible dust collection hood with a shovel-shaped structure, it can efficiently capture and remove dust, ultimately achieving efficient cleaning without secondary pollution and directly improving the power generation efficiency of the photovoltaic panels.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic cleaning technology, and in particular to a mobile photovoltaic cleaning device. Background Technology

[0002] Solar photovoltaic carports, as a form of green energy application that integrates power generation, shading, and parking functions, have been widely promoted. However, the surface of photovoltaic panels is prone to accumulating pollutants such as dust, pollen, bird droppings, and leaves in outdoor environments. These pollutants can significantly block light, leading to a substantial decrease in the power generation efficiency of the photovoltaic panels. Therefore, regular cleaning of photovoltaic panels is a necessary maintenance measure to ensure their efficient and stable power generation.

[0003] Currently, there are various methods for cleaning photovoltaic panels on the market, but all of them have obvious shortcomings when applied to the specific scenario of photovoltaic carports. First, manual cleaning remains the most common method. Cleaners need to carry tools and climb to the top of the carport to wash with water guns or wipe with mops. This method is not only inefficient and uneven in cleaning effect, but also poses a huge safety risk of working at height. Moreover, for large carports, the cost of hiring workers long-term is very high. Second, some portable cleaning tools have emerged, such as compressed air backpack-style blowing tools. Although they have improved portability to some extent and solved the cleaning problem in waterless scenarios, they still rely on manual operation in essence. Furthermore, the blowing method is prone to causing secondary dust and pollution, and the cleaning effect on sticky stains is also limited. Although some automated cleaning equipment has been proposed, most of them are designed for large-scale ground-mounted photovoltaic power stations, with complex structures and large volumes, and are not suitable for photovoltaic carports with height and space limitations. Therefore, there is an urgent need for a mobile photovoltaic cleaning equipment that is specifically designed for photovoltaic carports, with a compact structure and stable operation. Utility Model Content

[0004] This utility model provides a mobile photovoltaic cleaning device that solves the problems of traditional manual cleaning or single cleaning methods failing to completely remove dust, incomplete cleaning and secondary dust generation, as well as the problems of stable and reliable equipment operation in existing photovoltaic carport cleaning methods.

[0005] The solution to the above-mentioned technical problems of this utility model is as follows: A mobile photovoltaic cleaning device includes a mobile track, a mobile trolley, and a cleaning mechanism. The mobile track is laid parallel to both sides of the top of the photovoltaic shed. The mobile trolley consists of two car bodies and a crossbeam, spans across the mobile track, and can move back and forth along it. The cleaning mechanism is installed on the mobile trolley and is used to clean and collect pollutants on the surface of the photovoltaic panels. The cleaning mechanism includes a rotating brush roller, a drive motor that drives the rotating brush roller, a lifting actuator for raising and lowering the entire cleaning mechanism, and a dust collection device.

[0006] Based on the above technical solution, the present invention can be further improved as follows.

[0007] Furthermore, the bottom of the mobile trolley is equipped with drive wheels and driven wheels that cooperate with the moving track. The drive wheels are driven by a DC servo motor and equipped with a precision reducer. The frame of the mobile trolley is made of aluminum alloy. The DC servo motor ensures precise control of the moving speed and smooth start and stop, avoiding the impact on the equipment caused by sudden stops and starts. The precision reducer provides greater driving torque, enabling the trolley to overcome certain slopes and resistances. The aluminum alloy frame, while ensuring structural strength, significantly reduces the overall weight of the equipment, reduces the load requirements on the photovoltaic canopy support structure, and has good corrosion resistance, extending the service life of the equipment.

[0008] Furthermore, the bristles of the rotating brush roller are made of soft nylon material, and the lifting actuator is a hydraulic cylinder. The hydraulic pump station of the hydraulic cylinder is set on the moving trolley. The soft nylon bristles can effectively remove dust and minimize scratches on the surface of the photovoltaic panel, thus protecting the photovoltaic panel.

[0009] Furthermore, the dust collection device includes a dust collection hood covering the cleaning area of ​​the rotating brush roller, an air duct connected to the dust collection hood, a dust collection box for collecting dust, and a high-pressure centrifugal fan that provides suction airflow, realizing the integration of "sweeping-absorption-collection", fundamentally eliminating secondary dust pollution during the cleaning process, ensuring cleaning effect, and the high-pressure centrifugal fan ensures sufficient suction power.

[0010] Furthermore, the high-pressure centrifugal fan is connected to the dust collection box to draw in air. The dust collection box is detachably equipped with a dust collection box, and the dust collection box is detachably equipped with a filter screen. The dust collection box is equipped with a dust inlet corresponding to the air duct. The filter screen is equipped with a vibration motor. The detachable dust collection box makes cleaning accumulated dust very convenient. The design of the filter screen and the vibration motor is an active dust cleaning mechanism, which can effectively prevent the filter screen from being quickly blocked by dust, thereby maintaining the efficient working state and powerful suction of the vacuum cleaner for a long time.

[0011] Furthermore, the dust collection cover is made of flexible silicone material, with a shovel-shaped structure at the bottom. The flexible silicone material ensures that the dust collection cover can form an effective seal when in contact with the photovoltaic panel surface, without hard impact and scratching the panel surface. The shovel-shaped structure can more effectively "catch" the dust swept up by the front brush and guide it into the air duct, preventing dust from escaping from the bottom, and greatly improving the dust capture efficiency and dust collection effect.

[0012] Furthermore, the moving track is fixedly installed on the supporting structure of the photovoltaic vehicle shed by bolts. The moving track is made of aluminum alloy profiles, and the moving track has two track grooves corresponding to the drive wheel and the driven wheel. The aluminum alloy profiles have the characteristics of being lightweight, high-strength, and corrosion-resistant. The independent track grooves for different wheels are an ingenious design that separates guidance and load-bearing functions. It can prevent the drive wheel and the driven wheel from interfering with each other, ensure that the trolley always runs smoothly in a straight line, avoid the risk of getting stuck or derailing, and at the same time distribute the load-bearing pressure, thereby improving the stability and lifespan of the system.

[0013] Furthermore, the equipment is equipped with a controller for controlling the mobile trolley and cleaning mechanism. The controller is based on an embedded controller and integrates a wireless communication module, which can receive remote control commands. The embedded controller acts as the "brain" and can accurately coordinate complex action sequences such as trolley movement, brush rotation, mechanism lifting and lowering, and vacuuming start and stop. The wireless communication module allows operators to remotely control the equipment from the ground, completely avoiding the risks of working at heights, improving operational safety and convenience, and providing the possibility for more advanced timed tasks or cluster control.

[0014] Furthermore, the device also includes a battery that powers the entire device. This battery is a lithium iron phosphate battery, installed on the mobile trolley. Lithium iron phosphate batteries have high safety, long cycle life, and good high-temperature performance, making them very suitable for outdoor industrial applications. This independent power supply solution frees the device from the constraints of cables, enabling true wireless operation. The mobile range is unrestricted, and the deployment is flexible and simple, making it particularly suitable for use in existing carports where it is not convenient to install a fixed power supply.

[0015] This utility model provides a mobile photovoltaic cleaning device, which has the following advantages: 1. Excellent cleaning effect: The equipment integrates "sweeping, suction and collection". The rotating brush roller is responsible for removing dirt, and the high-pressure centrifugal fan generates strong suction. Combined with the flexible dust collection hood with shovel structure, it can efficiently capture and introduce dust. The filter screen with vibrating motor can automatically clean the dust and maintain the suction power for a long time and a stable time. In the end, it can achieve efficient cleaning without secondary pollution and directly improve the power generation efficiency of photovoltaic panels. 2. Stable and reliable operation with a long service life: The mobile trolley is driven by a DC servo motor and a precision reducer, which ensures accurate walking speed and smooth start and stop. The mobile track has independent track grooves for the drive wheels and driven wheels, realizing the separation of guidance and load-bearing, effectively preventing rail jamming and derailment, and the operation is relatively smooth. The aluminum alloy frame and track ensure strength while being lightweight and highly corrosion resistant, extending the service life of the equipment in outdoor environments. 3. Flexible deployment and convenient maintenance: Powered by lithium iron phosphate batteries, the equipment does not require external cables, achieving true wireless operation. It can be quickly deployed on any photovoltaic carport. The dust collection box adopts a detachable dust collection box design, making it very convenient to clean up the accumulated dust, which greatly reduces the workload and time cost of daily maintenance.

[0016] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it according to the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. The specific implementation methods of this utility model are given in detail in the following embodiments and their accompanying drawings. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 A schematic diagram of the structure of a portable photovoltaic cleaning device provided in an embodiment of this utility model; Figure 2 A front view of a portable photovoltaic cleaning device provided in an embodiment of this utility model; Figure 3 A schematic diagram of the structure of a dust collection device in a portable photovoltaic cleaning device according to an embodiment of this utility model; Figure 4 A top view of a portable photovoltaic cleaning device provided in an embodiment of this utility model; Figure 5 This is a side view of the cleaning mechanism in a portable photovoltaic cleaning device according to an embodiment of the present invention.

[0018] The attached diagram lists the components represented by each number as follows: 1. Moving track; 2. Moving trolley; 3. Cleaning mechanism; 301. Rotating brush roller; 302. Dust collection device; 3021. Dust collection hood; 3022. Air duct; 3023. Dust collection box; 3024. High-pressure centrifugal fan; 3025. Dust collection box; 3026. Filter screen; 3027. Vibration motor; 303. Drive motor; 304. Lifting actuator; 4. Controller; 5. Battery. Detailed Implementation

[0019] The following is in conjunction with the appendix Figure 1-5The principles and features of this utility model are described below. The examples given are for illustrative purposes only and are not intended to limit the scope of this utility model. The utility model is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of this utility model will become clearer from the following description and claims. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model.

[0020] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0022] like Figure 4 As shown, a mobile photovoltaic cleaning device has a mobile track 1 that is fixed to the support structure of the photovoltaic canopy by bolts. The track is made of LY12 aluminum alloy profile, which is lightweight and high-strength. Two independent track grooves are precisely machined on the track to accommodate the drive wheel 201 and the driven wheel 202, respectively. This dual-groove design realizes the separation of guiding and load-bearing functions. like Figure 1-2 As shown, the mobile trolley 2 consists of two symmetrically arranged car bodies and a connecting crossbeam forming an overall frame. The frame is made of aluminum alloy and assembled by bolts. Each car body is equipped with a set of wheels at the bottom. The drive wheel 201 is directly connected to the output shaft of a DC servo motor (model: 60ST-M01330) via axle. The motor is equipped with a 1:10 precision planetary reducer. The driven wheel 202 is screwed to the side of the car body. The cleaning mechanism 3 is installed on the crossbeam of the mobile trolley 2 via the lifting actuator 304. The lifting actuator 304 uses a TDHA12-500 hydraulic cylinder, and its cylinder body is fixedly connected to the crossbeam of the mobile trolley 2 via a flange. The hydraulic pump station is integrated into the mobile trolley 2, including a hydraulic oil tank, a gear pump and a solenoid directional valve, and is connected to the hydraulic cylinder via a high-pressure oil pipe. like Figure 5 As shown, the rotating brush roller 301 is mounted on the bracket of the cleaning mechanism 3 through a double-row angular contact ball bearing seat, and its axis is perpendicular to the direction of movement. The drive motor 303 (model: YE2-90L-4) is connected to the rotating brush roller 301 in a transmission ratio of 1:2. like Figure 3 As shown, the dust collection hood 3021 of the dust collection device 302 is connected to the air duct 3022 by an elastic clamp. The other end of the air duct 3022 is connected to the air inlet of the dust collection box 3023 by a flange. The high-pressure centrifugal fan 3024 (model: CX-75A) is fixed to the air outlet of the dust collection box 3023 by bolts. The dust collection box 3023 has a drawer-type dust collection box 3025 inside. A removable PTFE membrane filter 3026 is installed in the collection box. The filter 3026 is equipped with a YZD-2-0.15 type vibration motor 3027. The specific working principle and usage method of this utility model are as follows: Step 1: System initialization; The operator sends a start command via a handheld remote control. After the controller 4 is powered on, it executes a system self-test program. Check the battery level; if the voltage is below 44V, issue a low battery alarm. Test the communication status of each sensor and actuator; Raise cleaning unit 3 to the highest safe position; Step 2: The input port of the controller 4 is configured to be connected to the current detection circuit and encoder signal of the drive motor, and its output port is configured to be connected to the motor driver, relay and hydraulic solenoid valve.

[0023] Through the connection and configuration of the above hardware circuits, the device has the functions of overload protection and position positioning. The control logic is only an exemplary way to realize the functions of the hardware device of this utility model. Step 3: Cleaning execution; Cleaning mechanism in position: Controller 4 sends a descent command to lifting actuator 304 (hydraulic cylinder), the hydraulic cylinder pushes cleaning mechanism 3 down until the rotating brush roller 301 contacts the photovoltaic panel surface at an appropriate height, at the same time the drive motor 303 is started, so that the rotating brush roller 301 rotates at a speed of 300 rpm, and the high-pressure centrifugal fan 3024 is started to establish a negative pressure for vacuuming and moving cleaning: The servo motor of the drive wheel 201 starts, pushing the moving trolley 2 forward at a constant speed of 5m / min. The rotating brush roller 301 sweeps away dirt, the dust collection device 302 collects dust simultaneously, and the vibration motor 3027 works for 15 seconds every 10 minutes to clean the filter screen 3026. Step 4: Task completion and reset; When the mobile trolley 2 reaches the predetermined destination: the drive wheel 201 stops rotating, the brush roller 301 stops rotating after a 3-second delay, the high-pressure centrifugal fan 3024 stops after a further 5-second delay, the lifting actuator 304 raises the cleaning mechanism 3 to its highest position, and the mobile trolley 2 automatically returns to the starting position. Step 5: Equipment maintenance; After each task is completed, check the dust collection box 3025 and clean the accumulated dust in time. Check the wear of the rotating brush roller 301 weekly. Clean the surface of the moving track 1 monthly to ensure that there is no debris accumulation. Regularly check the oil level of the hydraulic system and the tightness of each connecting part. Hydraulic system implementation: The hydraulic pump station is integrated at the rear of the mobile trolley 2, including a 1.5L hydraulic oil tank, a gear pump with a rated pressure of 16MPa and a 4WE6E type solenoid directional valve. The system working pressure is set to 8MPa, and overload protection is achieved through an overflow valve. The hydraulic cylinder is a TDHA12-500 type with a cylinder diameter of 12mm, a stroke of 500mm, and a maximum thrust of 1200N. The system achieves precise control of the lifting position through a pressure relay. Electrical system implementation: Battery 5 uses LFP-48V100AH ​​lithium iron phosphate battery, which provides power of different voltage levels to various electrical devices through DC-DC converter. The control system drives DC servo motor through DRV8837 motor driver, and drives relays to control various actuators through ULN2003. The wireless communication module uses ESP32-WROOM-32D, which supports Bluetooth and WiFi dual-mode communication. Control system and working principle: The controller 4 is based on the STM32F103VET6 embedded controller and integrates the ESP32-WROOM-32D wireless communication module. The input port of the controller is connected to the drive wheel encoder and the battery power detection circuit; the output port is connected to the DC servo motor through the motor driver, controls the high-pressure centrifugal fan 3024 and the vibration motor 3027 through the relay, and controls the lifting actuator 304 through the hydraulic solenoid valve.

[0024] It should be specifically noted that the scope of protection of this utility model is limited to the aforementioned hardware device and its structural combination. The description of the controller 4 and its working process is only used to illustrate how the hardware device is activated and used, and its purpose is to clearly and completely describe the overall working process of the hardware device. The claims of this utility model do not seek to protect any software program, computer-readable storage medium, or simple control method. Any method that uses different control logic or program to implement its function based on the hardware structure described in this utility model falls within the scope of protection of this utility model.

[0025] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A movable photovoltaic cleaning device, comprising a moving track (1), a moving trolley (2), a cleaning mechanism (3), characterized in that: The moving track (1) is laid parallel to both sides of the top of the photovoltaic vehicle shed. The moving trolley (2) consists of two car bodies and a crossbeam, spans across the moving track (1), and can move back and forth along it. The cleaning mechanism (3) is installed on the moving trolley (2) and is used to clean and collect pollutants on the surface of the photovoltaic panel. The cleaning mechanism (3) includes a rotating brush roller (301), a drive motor (303) for driving the rotating brush roller (301), a lifting actuator (304) for lifting the entire cleaning mechanism (3), and a vacuuming device (302).

2. The mobile photovoltaic cleaning apparatus of claim 1, wherein, The bottom of the mobile trolley (2) is provided with a drive wheel (201) and a driven wheel (202) that cooperate with the mobile track (1). The drive wheel (201) is driven by a DC servo motor and equipped with a precision reducer. The frame of the mobile trolley (2) is made of aluminum alloy.

3. The mobile photovoltaic cleaning apparatus of claim 1, wherein, The bristles of the rotating brush roller (301) are made of soft nylon material, and the lifting actuator (304) is a hydraulic cylinder, with the hydraulic pump station of the hydraulic cylinder located on the mobile trolley (2).

4. The mobile photovoltaic cleaning apparatus of claim 1, wherein, The dust collection device (302) includes a dust collection hood (3021) covering the cleaning area of ​​the rotating brush roller (301), an air duct (3022) communicating with the dust collection hood (3021), a dust collection box (3023) for collecting dust, and a high-pressure centrifugal fan (3024) for providing dust collection airflow.

5. The mobile photovoltaic cleaning device according to claim 4, characterized in that, The high-pressure centrifugal fan (3024) is connected to the dust collection box (3023) to draw air. The dust collection box (3023) is detachably equipped with a dust collection box (3025). The dust collection box (3025) is detachably equipped with a filter screen (3026). The dust collection box (3025) is equipped with a dust inlet corresponding to the air duct (3022). The filter screen (3026) is equipped with a vibration motor (3027).

6. The mobile photovoltaic cleaning device according to claim 4, characterized in that, The dust collection hood (3021) is made of flexible silicone material and has a shovel-shaped structure at the bottom.

7. The mobile photovoltaic cleaning device according to claim 1, characterized in that, The moving track (1) is fixedly installed on the support structure of the photovoltaic vehicle shed by bolts. The moving track (1) is made of aluminum alloy profile. The moving track (1) has two track grooves corresponding to the drive wheel (201) and the driven wheel (202).

8. The mobile photovoltaic cleaning device according to claim 1, characterized in that, The device is equipped with a controller (4) for controlling the mobile trolley (2) and the cleaning mechanism (3). The controller (4) is based on an embedded controller and integrates a wireless communication module, which can receive remote control commands.

9. The mobile photovoltaic cleaning device according to claim 1, characterized in that, The equipment also includes a battery (5) that provides power to the entire equipment. The battery (5) is a lithium iron phosphate battery and is installed on the mobile trolley (2).

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