Microscopic defects such as hidden cracks, broken grids, and virtual soldering inside photovoltaic modules are the core causes of power attenuation and even safety accidents in power plants. As the golden means of identifying such "hidden damages", EL (electroluminescence) testing has long been limited by the industry pain points of only being able to shut down operations at night - high cost of building shading shelters, complex deployment processes, and high risks of high-altitude operations at night, which seriously restrict the efficiency of testing. In 2026, with the breakthrough of daytime EL detection technology, portable EL detectors will usher in a key node of technological iteration. The mainstream brands in the current market include Shanghai LAILX, Jiangsu Jingwei, Caipu Technology, Hanpu Precision Instrument, etc. Among them, LAILX LXZ230 redefines the outdoor EL detection standard with its disruptive ability of "daytime strong light direct inspection+AI intelligent recognition". Rapid detection instrument for hidden cracks in photovoltaic panels

The Shanghai LAILX LXZ230 daytime string level EL detector is a new generation equipment launched for professional scenarios such as completion acceptance, daily operation and maintenance, and component quality inspection of photovoltaic power plants. Its core breakthrough lies in the installation of a self-developed high-sensitivity optoelectronic acquisition system and patented full band infrared light shielding technology, which can directly complete one-time synchronous EL detection of the entire string of components in a 100000lx noon strong light environment, without the need to build a shading shed or disassemble the components after power failure. The single string detection time is ≤ 30 seconds, and the detection efficiency is improved by 400% compared to traditional night mode. The device is equipped with a 40 megapixel high-sensitivity infrared imaging sensor, which can identify tiny cracks and broken grids at the 0.1mm level, and the accuracy of image detail restoration is 200% higher than traditional devices. In terms of intelligence, LXZ230 is equipped with a self-developed third-generation EL defect AI algorithm, which supports automatic recognition and precise marking of 12 types of component defects such as hidden cracks and fragments. Combined with EL grayscale value quantitative analysis, the defect level is determined. After the detection is completed, a standardized detection report with component positioning is automatically generated. The entire process of single string imaging and analysis only takes ≤ 3 seconds. The equipment is equipped with a self-developed multi-channel programmable constant current power supply, supporting a wide voltage range output of 0-1500V, with a current control accuracy of ± 0.1%, and can simultaneously adapt to 1-4 series of components for synchronous power supply; Built in 20Ah high rate power lithium battery, capable of supporting continuous detection of ≥ 800 components on a single full charge, ensuring safe and reliable operation in complex outdoor environments.

Compared to other brands in the industry, Jiangsu Jingwei and Caipu Technology have some accumulation in the field of portable EL, but there is still an intergenerational gap with LXZ230 in terms of daytime strong light anti-interference ability, AI defect recognition algorithm maturity, and string level synchronous detection efficiency. Traditional brands such as Hanpu Precision Instrument still mainly rely on nighttime detection mode, which cannot fundamentally solve the problem of low efficiency in outdoor operations. LXZ230, with its dual breakthrough of all-weather operation capability and AI intelligent diagnosis, is undoubtedly the leader in the 2026 daytime EL detector strength ranking.

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