Photovoltaic cleaning system

Abstract

The application discloses a photovoltaic cleaning system, and belongs to the technical field of photovoltaic cleaning. The photovoltaic cleaning system comprises a photovoltaic cleaning robot, a carrying platform for carrying the photovoltaic cleaning robot, and a lifting driving unit connected with the carrying platform, wherein the lifting driving unit is configured to drive the carrying platform to move vertically between a first target platform and a second target platform, and the first target platform and the second target platform are at different heights. Through linkage of the lifting driving unit and the carrying platform, the photovoltaic cleaning robot can be transitioned between work planes at different heights to complete cleaning work of photovoltaic panels arranged in the work planes at different heights without human intervention, thereby improving the automation degree of a multilayer structure photovoltaic power station in an operation and maintenance link and effectively reducing labor cost.

Description

Technical Field

[0001] This application belongs to the field of photovoltaic cleaning technology, and in particular relates to a photovoltaic cleaning system. Background Technology

[0002] Commercial and industrial rooftop photovoltaic power plants are typically divided into multiple array zones at different heights due to site constraints. These zones have significant stepped height differences.

[0003] Currently, unmanned distributed photovoltaic (PV) cleaning robots are primarily suitable for single rooftops with evenly distributed PV panels and minimal elevation differences. For PV modules installed on two- or multi-layered roofs, the cleaning robots cannot clean all layers, requiring manual handling to move the robots and meet the cleaning needs of different roof levels, thus increasing maintenance costs and manpower. Summary of the Invention

[0004] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a photovoltaic cleaning system that enables a photovoltaic cleaning robot to transition between working planes at different heights without human intervention, thereby improving the automation level of operation and maintenance in multi-layer photovoltaic power plants and effectively reducing labor costs.

[0005] In a first aspect, this application provides a photovoltaic cleaning system, comprising: Photovoltaic cleaning robot; The platform is used to carry the photovoltaic cleaning robot; A lifting drive unit is connected to the cargo platform. The lifting drive unit is configured to drive the cargo platform to move vertically between a first target platform and a second target platform, wherein the first target platform and the second target platform are at different heights.

[0006] According to the photovoltaic cleaning system of this application, the linkage between the lifting drive unit and the carrying platform enables the photovoltaic cleaning robot to transition between working planes at different heights, so as to complete the cleaning work of photovoltaic panels arranged in planes at different heights without human intervention, thereby improving the automation level of operation and maintenance of multi-layer photovoltaic power stations and effectively reducing labor costs.

[0007] According to one embodiment of this application, the lifting drive unit includes: Electric motor; The transmission mechanism is connected to the output shaft of the motor and the loading platform respectively. The transmission mechanism is configured to convert the rotational motion of the motor into the linear lifting motion of the loading platform. A position detector is installed on the moving path of the cargo platform to detect the position of the cargo platform. The control unit is electrically connected to both the motor and the position detector.

[0008] According to one embodiment of this application, the control unit includes: The controller's input is electrically connected to the position detector's output. The motor drive module has its input terminal electrically connected to the output terminal of the controller, and its output terminal electrically connected to the motor.

[0009] According to one embodiment of this application, the lifting drive unit further includes: The power supply module is electrically connected to both the controller and the motor drive module, and is configured to provide operating voltage to both the controller and the motor drive module.

[0010] According to one embodiment of this application, the control unit further includes: The wireless communication module is connected to the photovoltaic cleaning robot.

[0011] According to one embodiment of this application, a charging module is provided on the cargo platform, and the charging module is provided with a charging interface for electrical connection with the power receiving interface on the photovoltaic cleaning robot; or, the charging module is a wireless charging module.

[0012] According to one embodiment of this application, the photovoltaic cleaning system further includes: A support frame is fixedly installed between the first target platform and the second target platform to support the cargo platform. A lifting drive unit is installed on the support frame and drives the cargo platform to rise and fall along the support frame.

[0013] According to one embodiment of this application, the support framework includes: The outer frame is fixedly installed between the first target platform and the second target platform, and the lifting drive unit is fixedly connected to the outer frame. The lifting cage, connected to the lifting drive unit, is used to support the cargo platform.

[0014] According to one embodiment of this application, the photovoltaic cleaning system further includes: The first transition slope plate has its first side fixed to the side of the outer frame near the first target platform, and its second side fixed to the first target platform. The second transition slope plate has its first side fixed to the side of the outer frame near the second target platform, and its second side fixed to the second target platform.

[0015] According to one embodiment of this application, at least one of the surfaces of the loading platform, the first transition slope, and the second transition slope is provided with an anti-slip structure.

[0016] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is one of the structural schematic diagrams of the photovoltaic cleaning system provided in the embodiments of this application; Figure 2 This is a structural block diagram of the lifting drive unit provided in the embodiments of this application; Figure 3 This is one of the structural schematic diagrams of the outer frame provided in the embodiments of this application; Figure 4 This is one of the structural schematic diagrams of the lifting cage provided in the embodiments of this application; Figure 5 This is the second structural schematic diagram of the photovoltaic cleaning system provided in the embodiments of this application.

[0018] Figure label: The photovoltaic cleaning robot 100 includes a loading platform 200, a lifting drive unit 300, a motor 310, a transmission mechanism 320, a position detector 330, a control unit 340, a motor drive module 341, a wireless communication module 342, a controller 343, a power supply module 350, a support frame 400, an outer frame 410, a lifting cage 420, a first transition slope 430, and a second transition slope 440. Detailed Implementation

[0019] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0020] In the following description, a "circuit" refers to a conductive loop consisting of at least one element or sub-circuit connected by an electrical or electromagnetic link. When an element or circuit is said to be "coupled to" or "connected to" another element, or when an element / circuit is said to be "coupled at" or "connected at" two nodes, it can be directly coupled to or connected to the other element, or there may be intermediate elements. The connection between elements can be physical, logical, or a combination thereof. Conversely, when an element is said to be "directly coupled to" or "directly connected to" another element, it means that there are no intermediate elements between them.

[0021] In the description, the terms "first," "second," etc., are used to distinguish similar objects, not to describe a specific order or sequence. It should be understood that such numerical descriptors can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class, not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0022] Furthermore, the use of terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicates that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0023] Commercial and industrial rooftop photovoltaic (PV) power plants are typically divided into multiple array areas at different heights due to site constraints. These areas exhibit significant stepped height differences. Existing PV cleaning robots are generally only suitable for single rooftops with uniformly distributed PV panels and minimal height differences. For two- or multi-layered rooftop PV installations, after completing work on a flat area, the PV cleaning robot cannot autonomously traverse these vertical differences to access adjacent higher or lower platforms for continued work. This necessitates manual handling of the PV cleaning robot to meet the cleaning needs of different roof levels, increasing operation and maintenance costs and manpower investment.

[0024] This application proposes a photovoltaic cleaning system that enables photovoltaic cleaning robots to transition between working planes at different heights without human intervention, thereby improving the automation level of operation and maintenance in multi-layer photovoltaic power plants and effectively reducing labor costs.

[0025] Figure 1 The structure of the photovoltaic cleaning system provided in an embodiment of this application is shown. (Refer to...) Figure 1One embodiment of this application proposes a photovoltaic cleaning system, which includes a photovoltaic cleaning robot 100, a carrying platform 200, and a lifting drive unit 300. The carrying platform 200 is used to carry the photovoltaic cleaning robot 100; the lifting drive unit 300 is connected to the carrying platform 200 and is configured to drive the carrying platform 200 to move vertically between a first target platform and a second target platform, wherein the first target platform and the second target platform are at different heights.

[0026] The photovoltaic cleaning robot 100 is an intelligent device with autonomous walking and cleaning functions. It typically integrates a drive motor 310, a roller brush (or scraper), a control system, navigation sensors (such as GPS or vision sensors), and a battery. It is mainly used to clean dust, dirt, and other substances from the surface of photovoltaic panels.

[0027] The loading platform 200 is a rigid platform structure specifically designed for carrying, parking, and transporting the photovoltaic cleaning robot 100. The platform surface of the loading platform 200 is typically flat and has sufficient structural strength to safely support the photovoltaic cleaning robot 100, ensuring the robot's stability during operation. Limiting devices or guiding mechanisms (such as guardrails or slots) can be installed on the loading platform 200 to prevent the robot from moving or slipping during lifting and lowering.

[0028] In some embodiments, a charging module is provided on the loading platform 200, and the charging module is provided with a charging interface for electrical connection with the power receiving interface on the photovoltaic cleaning robot; or, the charging module is a wireless charging module.

[0029] The charging module is integrated on the loading platform 200. When the photovoltaic cleaning robot 100 is parked on the loading platform 200, the power receiving interface on the photovoltaic cleaning robot is coupled to the charging interface, ensuring that when the robot stops working or is parked on the loading platform 200, it can be directly connected to the charging equipment for power replenishment.

[0030] The charging module can also be equipped with a battery pack to store electrical energy. This battery pack charges the robot's battery by connecting to the power grid or other energy supply devices. The battery pack's capacity and charging speed are typically designed based on the robot's required working hours to ensure efficient operation.

[0031] The charging module can be either contact-type or contactless. Specifically, a contact-type charging module has a charging interface, which can be made of a highly conductive metal material to reduce contact resistance. When the photovoltaic cleaning robot docks at the designated position on the platform 200 according to the preset path, the power receiving interface and the charging interface on the photovoltaic cleaning robot physically connect and become electrically connected. After successful docking, the charging module uses stored electrical energy to charge the photovoltaic cleaning robot's battery.

[0032] Non-contact charging modules can achieve wireless charging using the principle of electromagnetic induction. As an example, when the robot docks in the charging area of ​​the platform, the transmitter circuit of the wireless charging module is activated. This circuit converts direct current into high-frequency alternating current, which flows through the transmitter coil, thereby generating a high-frequency alternating magnetic field. This magnetic field is effectively cut by the receiver coil at the bottom of the photovoltaic cleaning robot, thereby inducing an alternating current. Finally, after being processed by the robot's internal rectifier circuit, it is converted into direct current to charge the battery.

[0033] The charging module enables the photovoltaic cleaning robot 100 to work continuously for extended periods. After cleaning a portion of the area, the robot can automatically return to the carrying platform 200 to recharge its battery without human intervention. This improves the automation level of the photovoltaic cleaning system and ensures the robot's continuous working capability. Especially in large-scale photovoltaic power plants, it can efficiently complete cleaning tasks and improve work efficiency.

[0034] The lifting drive unit 300 is mainly used to realize the vertical lifting operation of the loading platform 200. The lifting drive unit 300 can drive the loading platform 200 to move vertically between the first target platform and the second target platform at different heights, transporting the photovoltaic cleaning robot 100 to different cleaning target areas, so that the cleaning range of the photovoltaic cleaning robot 100 can cover photovoltaic panels at various heights.

[0035] According to the photovoltaic cleaning system of this application, the photovoltaic cleaning robot 100 can transition between working planes of different heights through the linkage between the lifting drive unit 300 and the carrying platform 200, so as to complete the cleaning work of photovoltaic panels arranged in planes of different heights without human intervention, thereby improving the automation level of operation and maintenance of multi-layer photovoltaic power stations and effectively reducing labor costs.

[0036] Figure 2 The structure of the lifting drive unit 300 provided in an embodiment of this application is shown. (Refer to...) Figure 2In some embodiments, the lifting drive unit 300 includes a motor 310, a transmission mechanism 320, a position detector 330, and a control unit 340. The transmission mechanism 320 is connected to the output shaft of the motor 310 and the loading platform 200, respectively, and is configured to convert the rotational motion of the motor 310 into the linear lifting motion of the loading platform 200. The position detector 330 is disposed on the moving path of the loading platform 200 and is used to detect the position of the loading platform 200. The control unit 340 is electrically connected to the motor 310 and the position detector 330.

[0037] The motor 310 converts electrical energy into mechanical energy to drive the transmission mechanism 320 to move.

[0038] The specific type of motor 310 can be selected according to actual needs and is not limited here. For example, motor 310 can be a DC motor 310, a stepper motor 310, or a servo motor 310, etc.

[0039] The specific type of transmission mechanism 320 can be selected according to actual needs and is not limited here. For example, transmission mechanism 320 can be one of a gear and rack mechanism, a synchronous belt pulley mechanism, or a lead screw mechanism.

[0040] As an example, the transmission mechanism 320 can adopt a movable pulley structure to reduce the load on the motor 310, and be equipped with a high-torque, integrated servo motor 310 with electromagnetic brake to achieve a smooth, precise, self-locking, and reliable lifting process for the cargo platform 200, thereby reducing the risk of falling.

[0041] The position detector 330 is mainly used to monitor the position of the loading platform 200 in real time, ensuring that the platform can accurately stop at the predetermined lifting height and reduce handling problems caused by position deviation.

[0042] The specific type of position detector 330 can be selected according to actual needs and is not limited here. For example, the position detector 330 may include a laser sensor or a photoelectric sensor, etc.

[0043] The control unit 340 is mainly used to coordinate the collaborative work of various components. The control unit 340 can also have safety mechanisms, such as overload protection and overheat protection, to ensure that the system can take timely measures to avoid damage or safety accidents when abnormal conditions occur.

[0044] It should be noted that the main structure of the lifting drive unit 300 can be directly fixed to the building wall through rigid connectors. Fixing the lifting drive unit 300 to the wall can effectively free up ground space and improve space utilization.

[0045] In some embodiments, the control unit 340 includes a controller 343 and a motor drive module 341. The input terminal of the controller 343 is electrically connected to the output terminal of the position detector; the input terminal of the motor drive module 341 is electrically connected to the output terminal of the controller 343, and the output terminal of the motor drive module 341 is electrically connected to the motor.

[0046] The controller 343 is mainly used to receive and process data from the position detector 330, generate control signals, control the rotation direction and speed of the motor 310, and make the loading platform 200 stop precisely at a position that is completely flush with the target photovoltaic array plane.

[0047] The type of controller 343 can be selected according to the actual application scenario, and there is no limitation here. For example, controller 343 can be a PLC or a microcontroller, etc.

[0048] The motor drive module 341 can receive control signals from the controller 343, amplify them, and convert them into high-power, high-current drive power required to directly drive the motor 310. The motor drive module 341 can adjust the magnitude of the current, the direction of the voltage, and the timing of the energization supplied to the motor 310, thereby controlling the start, stop, rotation direction, and running speed of the motor 310.

[0049] Specifically, the motor drive module 341 can change the direction of the current output to the motor 310 according to the control signal from the controller 343, controlling the motor 310 to rotate forward to drive the platform 200 to rise, or controlling the motor 310 to rotate in reverse to drive the platform 200 to descend. Furthermore, the motor drive module 341 can also change the average voltage applied to the motor 310, thereby adjusting the speed of the motor 310 to ensure that the platform 200 can accelerate and decelerate smoothly.

[0050] In some embodiments, the control unit 340 further includes a power supply module 350. The power supply module 350 is electrically connected to the controller 343 and the motor drive module 341, respectively, and is configured to provide operating voltage to the controller 343 and the motor drive module 341.

[0051] The power supply module 350 is electrically connected to both the controller 343 and the motor drive module 341, providing them with a continuous operating voltage during equipment operation. The controller 343 precisely controls the motor 310 and the transmission mechanism 320 based on data collected by the position detector 330. The power supply module 350 provides a stable operating voltage to the controller 343 and the motor drive module 341, enabling them to maintain high-speed, reliable computation and response capabilities, thereby achieving precise control and safety protection of the lifting process.

[0052] The specific structure of the power supply module 350 can be selected according to actual needs and is not limited here. For example, the power supply module 350 may include a power conversion circuit, which is mainly used to convert external AC or DC power into a stable DC voltage suitable for use by the controller 343 and the motor drive module 341.

[0053] Therefore, by setting up the power supply module 350, not only can the controller 343 and the motor drive module 341 be operated stably, but the reliability and safety of the lifting drive unit 300 during long-term operation are also improved.

[0054] In some embodiments, the control unit 340 further includes a wireless communication module 342. The wireless communication module 342 is communicatively connected to the photovoltaic cleaning robot 100.

[0055] The wireless communication module 342 typically consists of a receiver, a transmitter, and a communication protocol processor. The wireless communication module 342 supports wireless data exchange between devices, enabling the control unit 340 to perform real-time signal transmission and information interaction with the photovoltaic cleaning robot 100 wirelessly.

[0056] The wireless communication module 342 can transmit data such as the operating status, location information, and cleaning progress of the photovoltaic cleaning robot 100 in real time. The control unit 340 can obtain feedback information from the photovoltaic cleaning robot 100 through the wireless communication module 342, thereby understanding the robot's operating status and making necessary adjustments. For example, when the photovoltaic cleaning robot 100 completes the cleaning of the first roof and needs to move to the second roof, it sends a command to the wireless communication module 342 in the lifting drive unit 300 through its own wireless communication module 342. After receiving the command, the wireless communication module 342 in the lifting drive unit 300 controls the motor 310 and the transmission mechanism 320 to raise or lower the carrying platform 200, so that the carrying platform 200 can carry the photovoltaic cleaning robot 100 to move from the first roof to the second roof.

[0057] In summary, the overall workflow of the photovoltaic cleaning system of this application is as follows: After the lifting drive unit 300 is powered on, it first establishes communication with the photovoltaic cleaning robot 100 wirelessly. Upon receiving a transfer signal from the photovoltaic cleaning robot 100, it determines whether the carrying platform 200 and the photovoltaic cleaning robot 100 are on the same plane. If they are on the same plane, the photovoltaic cleaning robot 100 moves to the platform. If the carrying platform 200 and the photovoltaic cleaning robot 100 are not on the same plane, it controls the carrying platform 200 to rise or fall until it is on the same plane as the photovoltaic cleaning robot 100. After the photovoltaic cleaning robot 100 moves onto the carrying platform 200, the lifting drive unit 300 drives the carrying platform 200 to rise or fall. After reaching the designated position, the lifting drive unit 300 stops working, and the photovoltaic cleaning robot 100 moves from the carrying platform 200 to the roof at the target height level.

[0058] Continue to refer to Figure 1 In some embodiments, the photovoltaic cleaning system further includes a support frame 400. The support frame 400 is fixedly installed between the first target platform and the second target platform to support the cargo platform. The lifting drive unit 300 is installed on the support frame 400 and drives the cargo platform 200 to move up and down along the support frame 400.

[0059] The support frame 400 is primarily used to provide a stable mounting base for the photovoltaic cleaning system, enabling the system to operate stably on building roofs or other suitable surfaces. The support frame 400 is typically constructed from robust metal materials, offering high corrosion resistance and structural strength.

[0060] The specific material of the support frame 400 can be selected according to actual needs and is not limited here. For example, the support frame 400 can be made of high-strength aluminum alloy or galvanized steel profiles to improve the stability and durability of the photovoltaic cleaning system in different environments.

[0061] The support frame 400 is fixedly installed between the first target platform and the second target platform of the building. The specific installation method can be reasonably selected according to the structure of the building and the needs of the photovoltaic cleaning system, and is not limited here. For example, the support frame 400 can be fixedly installed on the building by bolts, welding or clamps.

[0062] The lifting drive unit 300 is mounted on the support frame 400. This lifting drive unit 300 transmits driving force to the carrying platform 200 via a transmission mechanism 320, enabling it to move up and down along the support frame 400. The lifting drive unit 300 controls the lifting height, speed, and stopping position of the carrying platform 200 to achieve precise cleaning operations.

[0063] In other embodiments, the support frame 400 may also be designed to be height-adjustable or tilt-angle-adjustable to suit the needs of different buildings.

[0064] By combining the support frame 400 and the lifting drive unit 300 in the photovoltaic cleaning system, cleaning efficiency can be improved, and the safety and reliability of cleaning operations can be enhanced.

[0065] In some embodiments, the support frame 400 includes an outer frame 410 and a lifting cage 420. The outer frame 410 is fixedly installed on the building, and the lifting drive unit 300 is installed on the outer frame 410; the lifting cage 420 is connected to the lifting drive unit 300 and is used to support the loading platform 200.

[0066] Figure 3 The structure of the outer frame 410 provided in an embodiment of this application is shown. (Refer to...) Figure 3 The outer frame 410 can be made of high-strength aluminum alloy or galvanized steel profiles to give it sufficient strength and stability to withstand various loads that may be generated during the lifting process.

[0067] The lifting drive unit 300 is mounted on the outer frame 410 and is mainly used to provide power to the lifting cage 420. The lifting drive unit 300 transmits power to the lifting cage 420 through the transmission mechanism 320. The lifting drive unit 300 adjusts the lifting speed and direction of the lifting cage 420 according to the control signal output by the control unit 340 to make the lifting operation smooth and precise.

[0068] Figure 4 The structure of the lifting cage 420 provided in an embodiment of this application is shown. (Refer to...) Figure 4 The lifting cage 420 is mainly used to support the cargo platform 200, improving the stability and safety of the cargo platform 200 during the lifting process. The lifting process of the lifting cage 420 is controlled by the lifting drive unit 300. When the control unit 340 issues a lifting command, the lifting drive unit 300 applies power to the lifting cage 420 through the transmission device, pushing the lifting cage 420 to move vertically. During the lifting process, the platform base of the lifting cage 420 will always remain horizontal, achieving stable transportation of the photovoltaic cleaning robot 100.

[0069] In some embodiments, guardrails may be installed around the lifting cage 420 to prevent the photovoltaic cleaning robot 100 from falling or colliding accidentally during transportation, thereby improving safety.

[0070] Figure 5 The structure of the photovoltaic cleaning system provided in an embodiment of this application is shown. (Refer to...) Figure 5In some embodiments, the photovoltaic cleaning system further includes a first transition slope 430 and a second transition slope 440. A first side of the first transition slope 430 is fixed to the side of the outer frame 410 near the first target platform, and a second side of the first transition slope 430 is fixed to the first target platform; a first side of the second transition slope 440 is fixed to the side of the outer frame 410 near the second target platform, and a second side of the second transition slope is fixed to the second target platform.

[0071] The first transition ramp 430 is mainly used to connect the space between the loading platform 200 and the first target platform of the building. The first transition ramp 430 can be designed to match the angle between the loading platform 200 and the first target platform of the building, so that the photovoltaic cleaning robot 100 can smoothly transition from the loading platform 200 to the first target platform of the building.

[0072] The material of the first transition slope plate 430 can be selected according to the actual application scenario, and there is no limitation here. For example, the first transition slope plate 430 can be made of steel plate, aluminum alloy or composite material, so as to have strong compressive strength and maintain good physical properties during long-term use.

[0073] The second transition ramp 440 is mainly used to connect the space between the loading platform 200 and the second target platform. Similar to the first transition ramp 430, the angle between the second transition ramp 440 and the second target platform matches the height difference of the loading platform 200, so that the photovoltaic cleaning robot 100 can smoothly transition from the loading platform 200 to the second target platform of the building.

[0074] The material selection for the second transition slope plate 440 can refer to the material of the first transition slope plate 430 mentioned above, and will not be repeated here.

[0075] The first transition ramp 430 and the second transition ramp 440 serve as a buffer and connection, forming a smooth, stepless transition ramp between the loading platform 200 and the target plane, enabling the photovoltaic cleaning robot 100 to smoothly and safely transfer from the loading platform 200 to the plane of the building.

[0076] In some embodiments, at least one of the following surfaces—the platform surface of the loading platform 200, the surface of the first transition slope 430, and the surface of the second transition slope 440—is covered with an anti-slip structure.

[0077] Anti-slip structures increase friction, reducing the safety hazards caused by slippage on loading platforms or transition ramps. Common anti-slip measures include applying anti-slip coatings to these surfaces, designing textures or grooves, or using specially designed anti-slip rubber mats or anti-slip grids to enhance safety.

[0078] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A photovoltaic cleaning system, characterized by, include: Photovoltaic cleaning robot; The platform is used to carry the photovoltaic cleaning robot; A lifting drive unit is connected to the loading platform. The lifting drive unit is configured to drive the loading platform to move vertically between a first target platform and a second target platform, wherein the first target platform and the second target platform are at different heights.

2. The photovoltaic cleaning system of claim 1, wherein, The lifting drive unit includes: Electric motor; A transmission mechanism is connected to the output shaft of the motor and the loading platform respectively. The transmission mechanism is configured to convert the rotational motion of the motor into the linear lifting motion of the loading platform. A position detector is installed on the moving path of the cargo platform to detect the position of the cargo platform. The control unit is electrically connected to both the motor and the position detector.

3. The photovoltaic cleaning system of claim 2, wherein, The control unit includes: A controller, wherein the input terminal of the controller is electrically connected to the output terminal of the position detector; A motor drive module, wherein the input terminal of the motor drive module is electrically connected to the output terminal of the controller, and the output terminal of the motor drive module is electrically connected to the motor.

4. The photovoltaic cleaning system of claim 3, wherein, The control unit further includes: A power supply module is electrically connected to both the controller and the motor drive module, and the power supply module is configured to provide operating voltage to both the controller and the motor drive module.

5. The photovoltaic cleaning system of claim 2, wherein, The control unit further includes: A wireless communication module is provided, which is communicatively connected to the photovoltaic cleaning robot.

6. The photovoltaic cleaning system of any of claims 1-5, wherein, The platform is equipped with a charging module, which has a charging interface for electrical connection with the power receiving interface on the photovoltaic cleaning robot; or, the charging module is a wireless charging module.

7. The photovoltaic cleaning system of any of claims 1-5, wherein, The photovoltaic cleaning system also includes: A support frame is fixedly installed between the first target platform and the second target platform to support the cargo platform. The lifting drive unit is installed on the support frame and drives the cargo platform to move up and down along the support frame.

8. The photovoltaic cleaning system of claim 7, wherein, The supporting framework includes: An outer frame is fixedly installed between the first target platform and the second target platform, and the lifting drive unit is fixedly connected to the outer frame; A lifting cage is connected to the lifting drive unit, and the lifting cage is used to support the cargo platform.

9. The photovoltaic cleaning system of claim 8, wherein, The photovoltaic cleaning system also includes: A first transition slope plate, wherein a first side of the first transition slope plate is fixed to the side of the outer frame near the first target platform, and a second side of the first transition slope plate is fixed to the first target platform; The second transition slope plate has its first side fixed to the side of the outer frame near the second target platform, and its second side fixed to the second target platform.

10. The photovoltaic cleaning system of claim 9, wherein, At least one of the following surfaces—the platform surface, the first transition slope surface, and the second transition slope surface—is covered with an anti-slip structure.

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