As the core component of power generation in power plants, photovoltaic modules have hidden defects such as internal cracks, broken grids, and virtual soldering, which are key factors leading to a decrease in power generation efficiency and premature scrapping of modules. Traditional EL detectors are bulky, rely on mains power, and have complex operations, making it difficult to meet the rapid detection needs in the field. Jiangsu Jingwei Technology Co., Ltd. focuses on the urgent need for non-destructive testing of photovoltaic modules, breaks through industry bottlenecks, and independently develops the JW-EL5 portable EL detector. With high sensitivity imaging, lightweight portability, and AI intelligent diagnosis as its core, it has become a "portable physical examination device" for photovoltaic modules, providing comprehensive protection for the core health of photovoltaic modules. Photovoltaic power station tester
JW-EL5 is developed based on advanced electroluminescence (EL) imaging technology. Its working principle is to apply a specific forward voltage to photovoltaic modules to excite the battery cells to produce electroluminescence effect, and then capture the luminescence image with a high-sensitivity infrared camera to accurately identify various internal defects that cannot be detected by the naked eye. The device is equipped with a 24.16 million level high-definition infrared camera, coupled with optimized optical system and multispectral sensing technology, with an imaging clarity of 0.1mm level. It can clearly present small defects such as hidden cracks, broken grids, fragments, PID effects, virtual welding, black hearts, and black edges. The imaging is clear, the contrast is high, the defect characteristics are clear at a glance, and the detection accuracy reaches the industry-leading level. At the same time, the device is equipped with an adaptive shading system, which can quickly image under complex lighting conditions such as strong light, weak light, and backlight without the need for additional shading treatment, completely solving the problems of blurry outdoor imaging and missed defect detection in traditional devices.
Portability and outdoor adaptability are the core competitiveness of JW-EL5, tailor-made for outdoor mobile detection. The whole machine adopts an integrated portable structure, with a storage volume equivalent to a large suitcase and a weight of less than 8.5kg. It can be easily lifted by a single person without any aviation carrying restrictions, and is flexibly adaptable to various testing scenarios. The device is equipped with a high-energy density energy storage power supply, which does not rely on mains power. It can continuously detect 200-300 photovoltaic panels on a single charge, meeting the needs of all day field operations. Paired with a 1.85-meter carbon fiber tripod, it can flexibly adjust the height and angle, and is suitable for front and side detection of components in different scenarios such as ground, roof, and water surface, with no blind spots for detection. In addition, the whole machine has a dustproof and waterproof rating of IP65, which can resist outdoor dust and rainwater invasion, and work stably in extreme temperature environments ranging from -20 ℃ to 60 ℃, adapting to various complex climate conditions.
Intelligent detection and data management functions make JW-EL5 more in line with the efficient operation and maintenance needs of the industry. The device is equipped with an AI intelligent analysis engine that can analyze defect characteristics in real time, automatically classify and rate defects, label defect locations and severity, without the need for manual inspection, greatly improving detection efficiency. After the inspection is completed, a standardized inspection report can be automatically generated, including imaging images, defect details, inspection parameters, and other information. The format is standardized and can be directly used for acceptance, archiving, and operation and maintenance decision-making. Simultaneously supporting local data storage, one click export, and 5G remote transmission, facilitating later traceability analysis, acceptance archiving, and remote collaborative diagnosis. In addition, the device supports wireless control of tablet computers, real-time image transmission and detection, without the need for close range operation. One person can independently complete the entire detection project, greatly reducing labor costs and high-altitude operation risks.
With its core advantages of precise flaw detection, portability, efficiency, and intelligent ease of use, the JW-EL5 portable EL detector has been widely used in various scenarios such as photovoltaic module factory quality inspection, power station arrival acceptance, installation quality inspection, operation and maintenance fault diagnosis, and component life evaluation, covering various photovoltaic projects such as household, industrial and commercial, large-scale ground, and fishery photovoltaic complementarity. Whether it is the detection of process defects in the production process, the investigation of hidden damages during transportation and installation, or the regular health check ups and fault location at power stations, JW-EL5 can provide efficient and reliable technical support to help photovoltaic enterprises improve their product quality management level, reduce operation and maintenance risks, and ensure long-term stable power generation at power stations.
As an innovative enterprise in the field of photovoltaic testing equipment, Jiangsu Jingwei Technology always adheres to the product concept of "precise testing and efficient operation and maintenance", relying on its core technology research and development capabilities and strict quality control system, to provide high-quality non-destructive testing solutions for the photovoltaic industry. The successful development of JW-EL5 portable EL detector has broken the monopoly of foreign brands in the field of high-end portable EL detection equipment, replacing imported products with domestically produced and cost-effective products, significantly reducing the testing costs of photovoltaic enterprises, and promoting the high-quality development of the photovoltaic industry. In the future, Jiangsu Jingwei Technology will continue to deeply cultivate the field of photovoltaic non-destructive testing, continuously optimize product performance, expand application scenarios, and provide higher quality products and services to safeguard the health of global photovoltaic modules throughout their entire lifecycle.
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