Solar Cell Service Device Non-Contact Defect Detection
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Solution Overview
Problem
The production of photovoltaic modules faces challenges in efficiently detecting and rectifying defects in solar cells and cell arrangements, particularly thin and fragile solar cells, leading to high waste rates and increased production costs due to the difficulty in visually inspecting and handling these sensitive components.
Innovation Solution
A service device and method that allows for non-contact, precise testing of solar cells and cell arrangements using a multi-axis manipulator, enabling detection of defects, positional verification, and correction of the gripping device, while also integrating a trimming device for precise handling and alignment, thereby minimizing waste and improving production efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If visual inspection methods are used to detect defects in solar cells, then defect detection is possible, but the inspection accuracy is insufficient due to the thin and fragile nature of solar cells
Solution Approach 1:
The patent replaces contact-based mechanical inspection methods with non-contact optical inspection methods. The service device uses optical systems to detect defects in solar cells without physical contact, thereby avoiding damage to the thin and fragile cells while achieving high measurement precision in defect detection.
Solution Approach 2:
The service device acts as an intermediary between the solar cells and the inspection system. It positions and holds the solar cells in a controlled manner during inspection, using non-contact methods to detect defects while protecting the cells from damage that would occur with direct handling or contact-based inspection.
2Ease of operation
If contact-based handling methods are used for solar cells, then the cells can be manipulated and positioned, but the fragility of solar cells leads to high waste rates
Solution Approach 1:
The service device replaces direct mechanical contact handling with non-contact optical fields for detection and positioning. By using optical methods instead of mechanical contact, the device can manipulate and position solar cells without causing the damage that leads to high waste rates, while maintaining ease of operation.
Solution Approach 2:
The service device enables solar cells to be inspected and positioned in a manner that minimizes external intervention and handling. The automated non-contact system reduces the need for manual handling operations, thereby reducing the risk of damage and waste while maintaining operational efficiency.
3Reliability
If comprehensive testing and inspection procedures are implemented, then defect detection capability is improved, but the production time and complexity increase
Solution Approach 1:
The service device is designed as a multi-functional system that combines multiple inspection and testing capabilities in a single integrated platform. It can perform various types of defect detection, positioning, and quality assessment using non-contact methods, thereby improving reliability without proportionally increasing device complexity.
Solution Approach 2:
The patent merges multiple inspection functions and testing procedures into a single integrated service device. By combining defect detection, positioning, and quality assurance capabilities in one non-contact system, it achieves comprehensive quality assurance while avoiding the complexity that would result from multiple separate inspection systems.
4Manufacturing precision
If multiple inspection steps are added to detect and correct defects, then quality control is improved, but the production speed decreases
Solution Approach 1:
The service device enables continuous non-contact inspection and quality control throughout the production process. By using optical methods that do not require stopping or slowing down the production line, it maintains manufacturing precision while preserving production speed, avoiding the need for multiple discrete inspection steps that would interrupt workflow.
Solution Approach 2:
The replacement of mechanical contact-based inspection with non-contact optical inspection allows for faster, continuous quality control without the physical constraints and time requirements of traditional methods. The optical system can detect and assess defects rapidly without requiring physical manipulation or multiple handling steps, thereby maintaining both quality control and production speed.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables high-precision handling and testing of solar cells, reduces waste and associated costs, and enhances the accuracy and speed of the production process by allowing for real-time detection and correction of defects, leading to improved cost-effectiveness and quality in photovoltaic module production.
Implementation Method 1
a detection device (41) for detecting the solar cell arrangement (3) and the gripping device (10)
Implementation Method 2
an electrical voltage is applied for the continuity measurement
Data Source
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AI summary
The invention relates to a service device for handling devices (2) of workpieces (3), in particular solar cell assemblies or strings, which comprises a test device (12) for the workpiece (3) and the handling device (2). The invention also relates to a handling device (2) for workpieces (3), in particular solar cell assemblies or strings, which comprises a multi-axis manipulator (7) having a gripper device (10) for a workpiece (3). A service device (11) is arranged in the working region (83) of the manipulator (7) with a test device (12) for jointly testing the workpiece (3) and the handling device (2), in particular the manipulator (7) and/or the gripper device (10). The invention further relates to a production device for solar elements (6), a service method for handling devices (2) of workpieces (3) and to a service device.