As the core unit of power generation in power plants, photovoltaic modules have subtle defects such as hidden cracks, broken grids, PID effects, and virtual soldering that are difficult to detect with the naked eye. However, they can cause power attenuation, hot spot faults, and even pose safety hazards, seriously affecting the lifespan and revenue of power plants. Jiangsu Jingwei Technology focuses on the urgent need for non-destructive testing of photovoltaic modules, breaking through the industry bottleneck of traditional EL detectors being bulky, complex to operate, and dependent on mains power. We have independently developed the JW-EL5 portable EL detector, with high sensitivity imaging, lightweight portability, and AI intelligent diagnosis as its core. It has become a "portable medical examination device" for photovoltaic modules, safeguarding the core health of photovoltaic modules in all aspects. Photovoltaic power station tester
JW-EL5 is developed based on advanced electroluminescence (EL) imaging technology. By applying a specific forward voltage to photovoltaic modules, it excites the solar cells to produce electroluminescence effect, and then captures the luminescence image with a high-sensitivity infrared camera. It accurately identifies various internal defects such as 0.1mm level hidden cracks, broken grids, fragments, PID effect, virtual welding, black heart, black edge, etc. that cannot be detected by the naked eye. 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. The device is equipped with a 24.16 million level high-definition infrared camera, coupled with optimized optical system and multispectral sensing technology, which can quickly obtain high signal-to-noise ratio clear images under complex lighting conditions such as strong light, weak light, and backlight, completely solving the problems of outdoor imaging blur and defect detection in traditional equipment. Simultaneously supporting multi angle detection, paired with a 1.85-meter carbon fiber tripod, the height and angle can be flexibly adjusted to adapt to the front and side detection of components in different scenarios such as ground, roof, and water surface, with no blind spots for detection.
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, and the shell is made of military grade wear-resistant material with a dustproof and waterproof rating of IP67, which can adapt to harsh environments such as high temperature, low temperature, humidity, sand and dust; After storage, the volume is only the size of a large suitcase, and the weight is lightweight. It can be easily lifted by a single person without any restrictions on air travel, making it convenient for cross regional project operations. 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; Equipped with a plug and play fast cable interface, electrical connection with components can be completed within seconds without the need for complex modifications, greatly improving detection efficiency. At the same time, it supports wireless control of tablet computers, real-time image transmission and detection, without the need for close range operation. One person can complete the entire detection process, reducing labor costs and high-altitude operation risks.
Intelligent data management and AI assisted diagnosis make detection more efficient and results more accurate. JW-EL5 is equipped with an AI intelligent analysis engine that can analyze EL image features in real time, automatically classify and rate defects, locate and annotate them, and evaluate their severity without the need for manual inspection. The detection efficiency has been improved by more than 70%, significantly reducing reliance on professional technicians. The device is equipped with a large capacity storage module, which can store more than 50000 sets of detection images and data. It supports local storage, one click export, and 5G remote transmission, making it easy for later traceability analysis, acceptance archiving, and remote collaborative diagnosis. After the inspection is completed, a standardized inspection report can be automatically generated, including imaging images, defect details, inspection parameters, rectification suggestions and other information. The format is standardized and the content is comprehensive, suitable for scenarios such as power plant acceptance, operation and maintenance records, and quality assurance claims, helping photovoltaic enterprises achieve refined quality control.
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. 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. In the future, Jingwei Technology will continue to focus on innovation in photovoltaic non-destructive testing technology, continuously optimize product performance, help photovoltaic enterprises improve their quality control level, reduce operation and maintenance risks, ensure long-term stable power generation of power stations, and promote high-quality development of the photovoltaic industry.
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