Defects such as hidden cracks, broken busbars, poor soldering, cell fragments, and PID degradation within photovoltaic (PV) modules cannot be identified by the naked eye, yet they continuously reduce the module's power generation capacity. In severe cases, they can lead to thermal burnout of the module, making them key hazards to investigate during the operation and maintenance (O&M) of PV power plants. Traditional EL detection equipment must operate at night or in low-light environments with shading shelters, limiting operation time. Nighttime inspections of large power plants on mountains or water surfaces also pose safety risks from heights and wading through water. The inspection process is lengthy and labor-costly, which has long restricted the efficiency of PV defect investigation. Shanghai LAILX has launched the LXZ230 daytime EL detector, equipped with the A20 infrared imaging chip, imported D30M high-definition infrared lens, and patented dark-light autofocus system. It breaks the environmental lighting constraints, enabling direct outdoor string-level EL defect imaging detection during the day, bringing a new defect detection solution to the PV O&M industry. Photovoltaic panel hidden crack rapid detection instrument

The core imaging unit of the LXZ230 daytime EL detector boasts a 36-million-pixel high-definition imaging capability and a 0.1A low-current imaging mode, capable of capturing weak defect signals and accurately identifying minor defects such as subtle cracks, soldering defects, cell delamination, and PID degradation. The device supports multi-level current adjustment, with currents ranging from 7 to 10A for detecting module cracks and debris, and from 1 to 3A for screening cell degradation and mixed grades. The 0.1A low-current mode is specifically designed for imaging PID-degraded modules, covering mainstream photovoltaic products such as crystalline silicon modules, thin-film modules, and HIT heterojunction modules. Relying on LAILX's proprietary optical filtering system, it effectively suppresses interference from the infrared band of sunlight, eliminating the need for shading shelters. Even in strong sunlight during clear days, it can still obtain clear and stable EL images. Maintenance personnel can complete EL defect photography during normal daytime inspection periods, eliminating the need to wait for nighttime operations and significantly reducing the duration of power station inspections.

The entire device adopts a lightweight split-type design, featuring a portable handheld imaging unit paired with a professional and stable gimbal. It supports handheld mobile scanning and detection, and can also be fixed on a tripod for fixed-point shooting. Equipped with a string-type constant current power supply, it provides stable and safe power supply, supporting simultaneous power-on detection of multiple components. It can support simultaneous imaging of up to 24 components in a single batch, significantly improving the efficiency of batch detection for strings. The device is equipped with a 5G WIFI wireless transmission module, supporting long-distance image transmission and device control up to 500 meters away. The captured EL original images are transmitted back to a tablet or computer terminal in real time, allowing on-site engineers to instantly view the images and mark the defect locations without having to return to the office for image analysis. All images are automatically stored and backed up in the cloud to avoid loss of detection data. Equipped with AI image recognition software, it can automatically identify and count defect types, generating standardized defect detection reports.

The LXZ230 daytime EL detector is compatible with various types of photovoltaic projects, including large-scale ground photovoltaic power plants, mountain photovoltaics, floating power plants on water surfaces, and distributed power plants on industrial and commercial rooftops. It covers the entire process, including component factory inspection, site inspection for power plant construction, grid connection acceptance testing, annual operation and maintenance inspection, and review of faulty components. Under traditional EL detection mode, large power plants require personnel to enter the site at night, which poses significant safety control pressure and low detection efficiency. The LXZ230 completely changes this operation mode. The operation and maintenance team conducts on-site inspection during the day, simultaneously completing EL imaging. Defective components can be directly marked and located, and replacement and repair can be arranged immediately, reducing power loss in the power plant.

Currently, the scale of existing photovoltaic (PV) power stations continues to grow, and the installed capacity of new projects is expanding. The industry's demand for rapid detection of module defects is on the rise. The Shanghai LAILX LXZ230 daytime EL detector, leveraging its core advantages such as daytime imaging, high-definition defect capture, wireless remote control, and batch string testing, addresses the industry pain point of traditional EL detection equipment being limited by lighting conditions, reducing the labor cost and safety risks associated with defect detection in PV power stations. LAILX continues to deeply explore the field of PV non-destructive testing, continuously optimizing infrared imaging algorithms and hardware architecture, helping the PV industry improve module quality control levels and ensuring the long-term safe and efficient operation of PV power stations.

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