The hidden defects such as hidden cracks, broken grids, and virtual soldering in photovoltaic modules are the core hidden dangers that lead to a decrease in power generation efficiency and premature aging of modules. Moreover, such defects are difficult to identify with the naked eye, and traditional detection methods are prone to causing secondary damage. Jiangsu Jingwei Technology Co., Ltd. closely adheres to the quality control needs of photovoltaics, relying on electroluminescent imaging technology and precision optical design, and independently develops the JW-EL2 portable EL detector. With high-definition imaging, portable operation, and accurate diagnosis as its core advantages, it has become the core equipment for detecting internal defects in photovoltaic modules, running through the entire process of module production, acceptance, and operation, and providing protection for the safe and stable operation of photovoltaic power plants. Photovoltaic module EL tester
Internal defect detection of photovoltaic modules is a key link in quality control of the photovoltaic industry chain. Traditional EL detectors are bulky, require specialized sites, and have cumbersome operating procedures. They are only suitable for fixed laboratory scenes and cannot meet flexible needs such as outdoor sites, high-altitude operations, and batch sampling. The Jiangsu Jingwei R&D team has broken through the limitations of traditional equipment technology to address industry pain points. They have deeply integrated high-precision optical imaging, lightweight structural design, and intelligent image processing technology to create the JW-EL2 portable EL detector, achieving a perfect balance between laboratory level detection accuracy and outdoor portable operation.
High definition imaging and precise recognition enable microscopic defects to be easily identified at a glance. The JW-EL2 is equipped with a 24.16 million level high-sensitivity infrared camera, based on the principle of electroluminescence (EL) imaging, which can capture the faint light emitted by the component when it is powered on, and accurately present the internal microstructure of the battery cell. The equipment is equipped with an efficient shading system and intelligent image processing algorithm, which effectively filters out environmental light interference, resulting in clear and delicate imaging. It can accurately identify various hidden defects with widths as low as micrometers, such as hidden cracks, broken grids, fragments, sintering defects, PID effects, and virtual welding, to avoid defect omission and false detection. Support offline imaging analysis and data comparison function, which can intuitively compare the imaging results of components at different times, accurately track the development trend of defects, and provide scientific basis for component maintenance and replacement.
Lightweight and portable design, suitable for efficient operations in all scenarios. JW-EL2 adopts a compact and lightweight structure design, with a total weight of up to 5kg. It is equipped with a three proof portable case, which can withstand complex outdoor environments such as high and low temperatures, humidity, and dust. It can be easily carried by a single person to various scenarios such as rooftop power stations, mountain power stations, component warehouses, and production workshops. The device is equipped with an adjustable tripod and wireless control module, supporting WiFi wireless connection. It can remotely control shooting and adjust parameters through a tablet, without the need for high-altitude wiring. A single person can complete the entire inspection process. The detection time for a single component is ≤ 2 minutes, and the daily detection capacity can reach 2-3MW, greatly improving the efficiency of batch detection and meeting the needs of large-scale power station inspections.
Intelligent and convenient operation, reducing usage barriers and maintenance costs. JW-EL2 is equipped with a fully Chinese intelligent operating system, with a simple and intuitive interface, simplified operation process, and no need for professional technicians. It can start detection immediately after booting up, making it easy for beginners to get started quickly. Built in large capacity energy storage power supply, long battery life, can meet all day outdoor testing needs, avoiding frequent charging; Supports multi format image storage, can store tens of thousands of EL detection images, supports one click export and printing of reports, compatible with multiple devices for viewing and archiving. Simultaneously supporting component barcode scanning and binding, achieving one-to-one correspondence between detection data and component information, facilitating operation and maintenance traceability and quality control, and helping enterprises establish a full lifecycle quality management system.
With excellent performance and scene adaptation capabilities, the JW-EL2 portable EL detector is widely used in the entire photovoltaic industry chain. In the production and manufacturing process, it is used for quality sampling and factory inspection of component production lines, strictly controlling product quality and preventing defective components from entering the market; During the construction phase of the power station, it is used for receiving goods for inspection, conducting post installation testing, and promptly identifying any damages that may occur during transportation and installation; In the operation and maintenance process, it is used for regular inspections, fault diagnosis, precise positioning of hidden defects, timely maintenance and replacement, and ensuring efficient power generation of the power station. Jiangsu Jingwei creates every high-quality equipment with strict quality standards and continuous technological innovation. The launch of the JW-EL2 portable EL detector fills the market gap in outdoor high-precision EL detection and helps upgrade the quality control of the photovoltaic industry to the Water Drop Credit.
In the future, Jiangsu Jingwei will continue to focus on innovation in photovoltaic detection technology, continuously optimize the performance of JW-EL2 portable EL detector, expand application scenarios, improve detection accuracy and intelligence level, provide better and more efficient detection solutions for the photovoltaic industry chain, and promote the sustainable development of the photovoltaic industry towards high quality and high reliability.
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