Automatic Solar Module EL and AOI Appearance Tester
Technical specifications:
Applications:
Applications of Automatic Solar Panel EL & AOI Inspection Machine
The Automatic Solar Panel EL & AOI Inspection Machine is designed for comprehensive quality inspection in solar module manufacturing lines. It integrates Electroluminescence (EL) inspection and Automated Optical Inspection (AOI) technologies to detect internal cell defects and external appearance defects, helping manufacturers improve product quality and maintain consistent inspection standards.
EL Inspection for Solar Cell Defect Detection
The EL inspection system is equipped with 4 near-infrared cameras, delivering an imaging resolution of 0.4 mm/pixel. It captures infrared images of solar modules to identify internal defects, including microcracks, broken cells, inactive areas, and other cell-related abnormalities that may not be visible to the naked eye.
AOI Inspection for Solar Panel Appearance Defects
The AOI appearance inspection system features 8 visible-light cameras, providing a higher imaging resolution of 0.09 mm/pixel. It captures detailed surface images to identify external defects such as scratches, stains, foreign materials, surface damage, and other visual abnormalities on solar panels.
Multi-Camera Imaging and Image Stitching Technology
The machine utilizes multi-station image acquisition and multi-camera image stitching technology to create complete EL infrared images and visible-light images of the entire solar module. This enables full-panel inspection while supporting detailed image viewing through small inspection windows, allowing operators to examine specific areas and identify defects more accurately.
Flexible Standalone or Integrated Inspection
The EL and AOI inspection systems can operate independently or be integrated into a single inspection machine. This flexible configuration allows solar module manufacturers to select EL inspection, AOI appearance inspection, or combined inspection according to their production processes and quality control requirements.
The machine is suitable for solar panel production lines that require reliable EL testing, automated visual inspection, and comprehensive solar module quality control.
Specifications:
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Specification
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Details
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Test Items
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Various types of solar panels
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Maximum Field of Vision
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2600mm x 1500mm
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EL Defect Types
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Hidden crack, broken grid, black center, black spot, dark film, debris, etc.
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AOI Appearance Defects
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Foreign matter, damage, exposed white, color difference, etc.
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Detection Efficiency
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Detection time of a single panel: approximately 20.0 seconds
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Network Communication
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Communication between network port and PLC can be integrated with the production line.
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Program Controlled EL Power Supply
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Power parameters can be adjusted through the program.
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Flexible Formula Type
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Compatible with various product models.
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Database Function
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Test results can be saved and queried.
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Software Interface
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Features small window for detailed view; user-friendly and easy to operate.
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EL Detection System
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Consists of four near-infrared industrial cameras, four high-definition lenses, filters, and detection software.
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Appearance Inspection System
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Includes four visible light cameras, four high-definition lenses, light sources, filters, and inspection software.
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Features:
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Feature
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Description
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Special Light Source and Image Acquisition System
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Provides stable and high-quality images.
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Sony CCD Chips
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Equipped with high-quality Sony CCD chips for superior image clarity.
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Image Mosaic
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Accurate image mosaic without obvious dislocation.
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High Detection Efficiency
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Ensures high detection efficiency and is easy to integrate with the production line.
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Intelligent Image Processing Algorithm
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Utilizes an intelligent image processing algorithm for stable and reliable detection results.
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Compatibility with Various Products
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Compatible with a variety of products and models, effectively reducing enterprise costs.
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