With the iteration and upgrading of photovoltaic module technology, high-efficiency modules such as N-type TOPCon and HJT are rapidly becoming popular. Hidden defects such as hidden cracks, broken grids, virtual soldering, and PID attenuation inside the modules cannot be identified by visual inspection, but they will continue to cause a decrease in power generation and even trigger hot spot fires in severe cases, causing significant losses to power plant operations. EL electroluminescence non-destructive testing has become an indispensable technical means to control module quality and identify internal hazards. Most traditional EL detection equipment requires the construction of shading shelters and can only operate at night. The equipment is bulky, the imaging clarity is limited, and fine cracks are difficult to distinguish. After the detection is completed, manual screening of each image is required, which is costly and time-consuming. It is difficult to meet the practical needs of rapid on-site inspections of roofs, mountains, floating power stations, and other areas. Suzhou LAILX focuses on the pain points of photovoltaic non-destructive testing and independently develops the LXG50 portable EL detector. With 30 million pixel high-definition imaging, AI intelligent defect recognition, all-weather detection capability, and portable whole machine design, it breaks the shackles of traditional EL equipment scenarios and builds a new solution for defect detection throughout the entire lifecycle of components. Photovoltaic module EL tester

The imaging capability is the core competitiveness of LXG50. The equipment is equipped with a full frame industrial grade CMOS infrared chip, paired with a 95 ° large angle patented infrared lens, with an imaging accuracy of up to 0.2mm/pixel. It can identify micro level fine cracks with a width as low as 0.2 μ m, and can fully capture more than ten types of internal damages such as hidden cracks, horizontal and vertical grid breaks, battery cell virtual welding, sintering defects, black cores and edges, over etching, mixing, PID attenuation, and hot spot hazards. At the same time, it supports simultaneous shooting of two components at once, greatly improving the efficiency of single frame detection at Suzhou Laikesi Unlike most EL devices on the market that can only work in a completely black environment, the LXG50 is equipped with a dedicated natural light filtering algorithm, which eliminates the need for shading facilities in low light environments below 300 irradiance. It can also carry out testing operations during the day without waiting for the night window period. Both indoor quality inspection and outdoor on-site inspection are applicable, and the operating efficiency is several times higher than traditional equipment, completely changing the industry situation where EL testing can only be carried out at night. The equipment adopts full-time autofocus technology, which does not require manual distance measurement assistance. Components placed on inclined or slanted surfaces can also automatically focus, reducing manual debugging operations. Single component imaging only takes 3-10 seconds. During large-scale power plant inspections, hundreds of component flaw detection tasks can be completed in a single day, which is suitable for large-scale on-site inspection needs.

The intelligent function further unleashes the value of the device. The LXG50 is equipped with LAILX's self-developed AI defect recognition engine. After capturing images, the system automatically delineates the defect location and marks the fault type, eliminating the need for staff to identify each picture one by one, reducing the threshold for detection and recognition, and minimizing the risk of human error. The entire set of equipment relies on WIFI wireless to connect the camera with the tablet and mobile phone. The operator remotely controls the shooting and real-time preview of infrared images. The detected images can be saved locally with one click, and can also be uploaded to the LAILX cloud platform. It supports large-scale image cloud AI batch recognition, automatically outputs standardized detection reports, completes power plant modeling and positioning, and facilitates project archiving, third-party verification, and post defect management. Equipped with a programmable and adjustable dedicated power supply, the voltage and current parameters can be remotely adjusted on the APP end, perfectly compatible with single crystal, polycrystalline, and various N-type new components. One device is suitable for the vast majority of mainstream photovoltaic panels in the market, without the need to replace the supporting equipment according to the component process.

The whole machine is fully designed for outdoor mobile operations, with the entire set of mainframe, power supply, and tripod stored in a shock resistant protective box. It can be carried by a single person for easy and fast disassembly and assembly. Even for high-rise roofs and rugged mountain power stations, equipment transportation and deployment are very convenient. The hardware protection level of the equipment is suitable for outdoor working conditions and can cope with temperature differences, dust and other environmental factors. Whether it is component factory incoming material sampling, production line finished product inspection, completion acceptance of new power plants, troubleshooting of existing power plants, or third-party on-site testing, it can be competent for the job. The scale of existing photovoltaic power stations in China continues to expand, and a large number of components that have been in operation for many years are gradually entering the aging cycle. Power generation losses and safety accidents caused by internal defects are not uncommon, and the market demand for efficient and convenient on-site EL detection equipment continues to rise. The LXG50 portable EL detector integrates high-definition imaging, all-weather operation, AI intelligent interpretation, and portability, breaking free from traditional equipment environment and site limitations, helping the photovoltaic industry to control the quality of components, reduce economic losses caused by hidden defects, and safeguard the safe and stable operation of photovoltaic power plants.

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