Defects such as hidden cracks, broken grids, virtual soldering, battery fragments, PID decay, etc. inside photovoltaic modules cannot be identified by the naked eye, but they will continue to reduce the power generation capacity of the modules, and in severe cases, cause module hot spot burning, which is a key hidden danger to be investigated during the operation and maintenance of photovoltaic power plants. For a long time, photovoltaic EL testing has been constrained by the industry. Traditional EL equipment is highly dependent on low light environments, and direct sunlight during the day can cause serious overexposure in imaging, making defects unrecognizable. The industry generally only chooses night work or sets up shading sheds on site to create low light conditions. Night work has high labor costs, high risks in mountainous, water surface, and rooftop power station operations, long inspection cycles, and is limited by weather and lighting conditions, making it easy to miss inspections. Setting up shading shelters also requires a lot of manpower and time, seriously restricting the efficiency of power station defect investigation. Shanghai LAILX focuses on industry pain points and launches the LXZ230 daytime EL detector, breaking the industry limitation of EL detection that can only be operated at night. It enables direct cascading EL imaging detection in daylight environments and reshapes a new paradigm for photovoltaic defect detection. Photovoltaic panel testing instrument

The LXZ230 is equipped with a new generation A20 infrared imaging chip, an imported D30M high-definition infrared lens, and a patented strong light suppression optical filtering system, which can effectively filter out stray light interference in sunlight without the need to build a shading shed. It can directly capture component EL images in natural light environments during the day, and clearly capture various internal defects such as micro cracks, virtual soldering, battery fragments, black heart pieces, and broken grids. The device supports multi gear current switching. The 0.1A low current mode is specifically used for PID attenuation and small hidden crack screening, while the high current mode is suitable for detecting large-area fragments and severe virtual welding defects, taking into account the recognition needs of different defect types. It is compatible with various mainstream photovoltaic modules such as crystalline silicon, double glass, half sheet, HJT, TOPCon, etc. The device supports synchronous power on detection of multiple components, greatly improving the coverage scale of single detection, bidding farewell to the inefficient mode of traditional single component block by block detection, and effectively shortening the detection period of power plants.

The whole machine adopts a portable split design, with a lightweight imaging host and power supply unit that can be transported and deployed by a single person. It is very suitable for complex power plant sites such as distributed roofs, mountains, and water surfaces. Equipped with a 5G wireless transmission module, the imaging image is wirelessly transmitted in real-time to the tablet terminal, allowing operators to view the imaging effect from a distance. The equipment can be remotely controlled within a range of 500 meters to enhance operational safety. The system is equipped with AI image recognition function, which automatically marks the suspected defect location after shooting, reducing the workload of manual image reading and lowering the risk of missed judgment during image reading. The device supports both static photography imaging and video scanning detection modes. Static photography is used for defect archiving and evidence collection, while video scanning mode is suitable for rapid survey of large area formations. The two modes can be flexibly switched to meet the different needs of acceptance sampling and operation and maintenance inspection. Equipped with professional EL analysis software, batch management of images, automatic generation of standardized inspection reports, complete recording of defect locations and types, facilitating subsequent fixed-point defect elimination by operation and maintenance personnel.

In terms of electrical safety design, the LXZ230 dedicated string power supply unit has overcurrent, overvoltage, and reverse connection protection, automatic power on process control, stable power supply within 10 seconds, ensuring the safety of the detection process, and is suitable for on-site detection of 1500V photovoltaic strings. The equipment components have undergone rigorous high and low temperature, sand and dust, and humid environment testing, and can adapt to complex outdoor conditions such as northwest Gobi, coastal salt spray, and southern high humidity in China. They can operate stably and reliably for a long time. In the past, many power plant projects could only carry out EL testing during the nighttime window period. When the project schedule was tight, scheduling the testing work was difficult. The LXZ230 daytime EL testing plan allows testing work to be carried out during normal working hours during the day, providing a better working environment for personnel and eliminating the need for overtime at night. This greatly reduces the safety risks of high-altitude and water surface operations, eliminates the need for building and dismantling shading shelters, and compresses the overall testing cost of the project.

The LXZ230 daytime EL detector is widely used in scenarios such as new power station grid connection acceptance, component arrival quality inspection, annual inspection of existing power stations, traceability of faulty components, insurance loss assessment, etc. It has been widely applied in a large number of ground centralized, industrial and commercial rooftop, and fishery photovoltaic complementary projects in China. Shanghai LAILX has a comprehensive technical service system, providing equipment operation training, on-site technical support, annual calibration, and after-sales maintenance services to help the testing team quickly grasp the daytime EL testing operation process. LXZ230 breaks through the traditional EL detection time limit, making photovoltaic hidden crack detection feasible 24/7, promoting photovoltaic quality detection towards high efficiency and safety, providing new technological equipment for photovoltaic life cycle quality control, helping photovoltaic power plants reduce the loss of power generation caused by defects, and ensuring long-term stable income of power plants.

Photovoltaic panel testing equipment, solar cell testing equipment, outdoor photovoltaic power station testing equipment