Solar Panel EL + AOI Tester
The Solar Panel EL + AOI Tester is an automated device integrating Electroluminescence (EL) detection and visible light appearance inspection functions. It operates within a dark chamber by applying current to energized modules to stimulate internal luminescence. Using high-sensitivity cameras, it captures EL images while simultaneously acquiring visible light images of the module surface. This enables intelligent identification, localization, and analysis of internal defects such as micro-cracks, fragments, broken fingers, cold solder joints, black cores, and contamination, as well as surface flaws like scratches, chipped edges, dirt, color differences, foreign objects, poor encapsulation, broken cells, and ribbon misalignment. It is a key inspection equipment for achieving comprehensive quality control and reliability assurance throughout the photovoltaic module production process.
Product Features
Integrated Dual-Function Inspection: Combines Electroluminescence (EL) detection and visible light appearance inspection in one system. Accurately identifies internal micro-defects like micro-cracks, fragments, broken fingers, cold solder joints, and black cores while comprehensively detecting surface flaws such as scratches, chipped edges, dirt, color differences, foreign objects, poor encapsulation, and ribbon misalignment, achieving thorough and integrated quality inspection.
High-Precision Imaging & AI Analysis: Utilizes high-precision cameras to capture EL luminescence images of energized modules in dark chamber environments. Combined with advanced image processing and AI intelligent algorithms, automatically completes defect identification, localization, classification, and analysis, significantly improving inspection accuracy and efficiency while reducing manual labor dependency.
High-Speed Automated Operation: Features millisecond-level image acquisition and processing speeds. Paired with automated production line design, supports high-speed online inspection, meeting the high-throughput, fast-paced quality control demands of photovoltaic module production lines while ensuring production efficiency and product yield.
Comprehensive Data Reporting: Provides clear and intuitive defect reports and visualized data, offering reliable basis for process improvement and quality traceability. Serves as an indispensable core quality control equipment for ensuring long-term reliability and enhancing product competitiveness of photovoltaic modules.
Technical Parameters
Model: YH-EL8
Applicable Process: Defect Detection for Pre-/Post-lamination Components
Testing Specification: Various Monocrystalline & Polycrystalline Cell Modules
Camera Type: Professional Industrial Camera
Resolution: EL: 60 Megapixels, Appearance: 24 Megapixels
Shooting Mode: 8-Camera Area Array Mode
Sensitivity: Detectable Crack Width < 0.03mm
Loading Method: Automatic Loading/Unloading
Detection Method: Online Automatic Detection
Effective Testing Area: 2600*1500mm
Stabilized Power Supply: 60V/20A
Image Acquisition Time: 100~700ms
Power Supply: 220V/50HZ
Equipment Dimensions: 3095×2220×1665mm
Product Applications
Online Production Line Quality Inspection: Integrated at the end of the photovoltaic module automated production line, performs high-speed, fully automated EL and appearance defect detection on newly encapsulated components. This is a core link ensuring outgoing product quality and controlling production yield.
Laboratory Fine Analysis: Applied in manufacturing enterprise or third-party testing agency laboratories, enables deeper and more precise defect diagnosis, process effect evaluation, and failure analysis for raw materials (e.g., cells), in-process samples, and finished modules.
Power Station O&M and Diagnosis: Using (typically portable or mobile) EL detection equipment, conducts on-site quality checks, performance evaluations, and fault location during the power station construction phase (checking installation damage) and operation phase (locating faulty components like hot spots, micro-cracks, PID).
R&D and Certification Testing: Serves component R&D institutions and certification testing centers. During new product development, new material/process validation, long-term reliability studies (e.g., comparison before and after aging tests), and meeting IEC/UL standard certification requirements, provides critical defect detection and quality assessment data.
