Solar Panel Edge-Guided Cleaning Unit for Flexible Debris Removal
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Solution Overview
Problem
Existing maintenance systems for solar panel arrays are inflexible, require extensive infrastructure, and often damage panels due to their design, while manual cleaning is labor-intensive and inefficient, especially when dealing with large amounts of debris like snow.
Innovation Solution
A service device with a guiding unit that can be easily mounted to any solar panel edge, allowing for flexible positioning and use of various service elements like brushes, snow ploughs, and sensors, which can be adjusted to avoid panel damage and efficiently remove debris, and includes a control system for precise alignment and movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual cleaning is used, then labor flexibility is maintained, but cleaning efficiency and quality consistency deteriorate due to physical exhaustion and inattentiveness
Solution Approach 1:
The cleaning system is designed to operate autonomously without continuous human intervention. The service device moves automatically along the solar panel rows, performs cleaning operations, and returns to base station for recharge, enabling the system to service itself and eliminating the need for manual labor while maintaining consistent cleaning quality
Solution Approach 2:
Manual mechanical cleaning operations are replaced with an automated service device that uses mechanical brushes, water spray nozzles, and suction systems. The device is controlled by a control unit that coordinates all cleaning operations, replacing human operators with an automated mechanical system that does not suffer from fatigue or inattentiveness
2Area of stationary object
If housing embraces solar panel edges for guidance, then cleaning coverage is improved, but panel damage risk increases due to contact with sensitive backsides
Solution Approach 1:
Guiding rollers are introduced as intermediary elements between the service device housing and the solar panels. These rollers contact only the robust frame edges of the panels to provide guidance and support, while the housing maintains sufficient clearance to avoid contacting the sensitive photovoltaic cells and backside of the panels, thus preventing damage while ensuring proper positioning
Solution Approach 2:
The housing is designed with flexible positioning capabilities through adjustable guiding rollers that can adapt to panel variations. The housing structure includes clearance zones and flexible mounting mechanisms that allow it to conform to panel edges without exerting excessive force that could damage the panels
3Manufacturing precision
If fixed guiding rails are used, then cleaning path precision is improved, but device complexity and investment costs increase
Solution Approach 1:
The complex fixed guiding rail infrastructure is extracted and replaced with a simplified guidance system. The service device uses active guidance through sensors and control algorithms that enable it to navigate along solar panel rows using the panels themselves as reference, eliminating the need for separate fixed rail installations while maintaining adequate positioning precision
Solution Approach 2:
The service device uses the solar panel arrangement itself as its guidance infrastructure. By detecting panel positions and using the panel edges and surfaces as reference features, the device navigates autonomously without requiring external guiding rails, thereby simplifying the overall system while maintaining cleaning path precision
4Object-affected harmful factors
If confined cleaning space inside housing is used, then protection from debris is improved, but handling capability of large pollutant masses deteriorates
Solution Approach 1:
The cleaning system transitions from a purely enclosed in-housing cleaning approach to a multi-dimensional solution. Large debris is handled by extending cleaning elements outward from the housing in the vertical dimension, while the housing itself provides lateral protection. This allows the system to accommodate both large pollutant masses and maintain protection from debris
Data Source
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AI summary
The invention relates to a service device for cleaning or maintenance of a solar panel arrangement, comprising a service unit for cleaning or maintenance of at least one surface of the solar panel arrangement, a guiding unit for guiding the service unit with respect to the solar panel arrangement, and a driving unit for moving the service unit with respect to the solar panel arrangement, wherein the service unit comprises a first engagement section and a second engagement section, wherein the guiding unit is attachable to the first engagement section, the guiding unit being configured for direct engagement with an edge of the solar panel arrangement, wherein the driving unit is attachable to the second engagement section, and wherein the second engagement section is displaceable with respect to the first engagement section by the driving unit.