For a long time, the detection of hidden cracks in photovoltaic module EL has always been subject to the "day and night constraints". Traditional EL equipment relies on low light environments for operation, and strong light interference during the day can directly cause blurry images and unrecognizable defects. The industry can only generally adopt night inspection mode. Nighttime work not only has high labor costs, high operational risks, and long inspection cycles, but is also highly susceptible to missed inspections due to visual and weather conditions, seriously restricting the efficiency of acceptance and operation of photovoltaic power plants. In order to solve the technical pain points of the industry for many years, LAILX in Suzhou has achieved technological breakthroughs and launched the LXZ230 daytime EL detector. With self-developed optical noise reduction technology and a new imaging system, it achieves high-definition EL imaging in strong light environments, completely breaking the industry curse of EL detection that can only be operated at night and opening a new era of photovoltaic all-weather non-destructive testing. Photovoltaic module EL tester

The core breakthrough of LXZ230 lies in overcoming the industry's technical challenges of natural light interference. The device is equipped with a new generation A20 infrared imaging chip, paired with imported high-definition infrared lenses and high-precision customized filters, which can accurately filter out solar visible light clutter, effectively suppress imaging noise in strong light environments, and still output high contrast and high-definition EL images under direct sunlight conditions at noon. It can accurately identify various internal hidden defects such as subtle cracks, broken grids, virtual soldering, black cores, PID attenuation, battery fragments, etc. The imaging quality is completely comparable to traditional nighttime EL detection equipment. The device is equipped with the 9th generation global autofocus system, which supports 94 point wide range autofocus coverage, achieving autofocus when moving and imaging when in place, without the need for manual parameter tuning, greatly simplifying the on-site operation process. Simultaneously supporting high and low dual current imaging modes, low current accurately captures minor performance degradation defects, high current efficiently investigates large-area damage problems, fully adapts to all types of photovoltaic modules such as monocrystalline, polycrystalline, TOPCon, HJT, etc., covering all application scenarios such as ground power stations, rooftop photovoltaics, floating on water, and complementary fishery photovoltaics.

In terms of homework efficiency and practical experience, LXZ230 has achieved comprehensive upgrades. The device is equipped with a 5G high-speed WIFI wireless transmission module, which has strong electromagnetic interference resistance and supports signal transmission over a distance of 500 meters. It can be connected to dual terminals for synchronous operation, forming an efficient operation mode of "one person powering on, one person imaging verification", greatly improving the efficiency of batch inspection. The EL raw images captured on site can be wirelessly transmitted in real-time to tablet terminals, and staff can verify the imaging quality in real time to determine whether additional shooting and retesting are needed, thus eliminating missed or false detections from the source and avoiding rework on site. The entire equipment adopts a lightweight modular design, with independent and detachable cameras, gimbals, and power supply devices for convenient storage and easy transportation and deployment by a single person. It can quickly adapt to complex power station scenarios with inconvenient transportation such as mountains, rooftops, and water. Equipped with a dedicated mobile constant current power supply, the power supply is stable and the battery life is strong. A single full charge can complete thousands of component tests, fully meeting the needs of uninterrupted inspection operations throughout the day.

To meet different inspection needs, LXZ230 innovatively adopts a dual operation mode, balancing sampling accuracy and census efficiency. The fixed-point photography mode is suitable for power station completion acceptance and key component sampling, with accurate imaging and clear defects; The continuous video scanning mode is designed specifically for large-scale photovoltaic base bulk surveys, which can quickly collect EL videos of the entire station components. Later, AI software can analyze defects frame by frame, efficiently completing the comprehensive hidden danger investigation of 100MW level power plants. All images collected by the device are automatically bound with time, location, and serial number information. Relying on the LAILX self-developed AI intelligent defect recognition system, it can automatically mark defect types, count defect quantities, and locate defect locations without the need for manual judgment and recording, greatly reducing labor costs and interpretation errors, quickly generating standardized detection reports, and achieving a closed-loop process of "on-site collection intelligent analysis report output".

Rigorous working condition adaptation and safety design enable the equipment to adapt to complex outdoor work scenarios. The entire system has dust-proof, shockproof, and anti-interference characteristics, and can work stably in a wide temperature range of -10 ℃ to 50 ℃, without fear of harsh working conditions such as sandstorms, high temperatures, and high humidity. The equipment is equipped with multiple safety protection logics, with intelligent protection throughout the entire process of power on and detection, effectively avoiding the risk of high-voltage accidental contact and ensuring the safety of operators in all aspects. Compared with the traditional night detection mode, LXZ230 expands the operation window to all day daylight, without the need for night scheduling or supporting lighting and security resources, directly compressing project duration by more than 30%, significantly reducing operation and maintenance manpower and logistics costs, while avoiding safety hazards of night operations.
With the continuous implementation of photovoltaic large-scale base projects, the existing power station operation and maintenance market is accelerating expansion, and 24/7, high-efficiency, and high-precision defect detection has become a necessity in the industry. The LXZ230 daytime EL detector breaks the industry's inherent mode with disruptive technology and reconstructs the photovoltaic EL detection operation system. In the future, LAILX will continue to deeply cultivate the field of photovoltaic non-destructive testing, iterate optical imaging and AI recognition technology, empower the quality control of photovoltaic modules throughout their lifecycle, and promote the intelligent upgrading of the photovoltaic testing industry.

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