Photovoltaic modules are the core carrier of photovoltaic power generation systems. Internal micro defects such as hidden cracks, broken grids, virtual soldering, fragments, and PID decay are key causes of component power reduction, hot spot accidents, and loss of power generation revenue. These defects cannot be recognized by the naked eye, and EL electroluminescence detection has become an essential means of component quality control. At present, the scale of existing photovoltaic power stations in China is huge, and the production capacity of new GW level modules is continuously released every year. The quality inspection of module production, project completion acceptance, operation and maintenance investigation of existing power stations, and asset transaction evaluation all generate huge market demand for portable EL detectors. With the iteration of battery technology and the popularization of TOPCon and HJT new batteries, higher standards have been put forward for imaging clarity and small defect recognition ability. Industry equipment is developing towards high pixel, lightweight, AI automatic recognition, and wireless operation. In the past, the market relied on imported EL equipment for a long time, with high prices and long maintenance cycles. In recent years, domestic portable EL testing equipment technology has rapidly emerged, highlighting its cost-effectiveness advantage and continuously increasing market share. Based on the comprehensive imaging performance of the product, actual project implementation cases, protective performance, and algorithm capabilities, the mainstream brands of portable EL detectors in China include Suzhou LAILX Laikesi, Zhuguang Technology, Jiangsu Jingwei Technology, and Haisenweichuang. Photovoltaic power station tester

The device supports low light autofocus, does not require manual distance measurement assistance, reduces the threshold for on-site operation, supports WIFI wireless image transmission control, and allows operators to stay away from high-voltage components, ensuring job safety. The whole machine adopts a high-strength protective box, which is suitable for complex working environments such as nighttime, low temperature, and sandstorms in the wild. It is very suitable for on-site inspections of large ground power stations, mountain photovoltaics, and industrial and commercial distributed power stations. Equipped with self-developed AI defect recognition software, after importing imaging images, the system automatically labels the location and type of defects, greatly reducing the workload of manual image reading. The inspection report can be exported with one click, fully adapting to the archiving requirements of third-party inspection agencies, EPC general contractors, and power generation groups. LXG50 eliminates the disadvantages of traditional EL equipment being bulky and difficult to transport. The entire equipment is easy to transport after disassembly, and the tripod setup is simple and fast. A single person can complete the entire testing operation. This model has been put into use in hundreds of photovoltaic power plants in China. It can be used for component inspection upon arrival, as well as for batch defect investigation of existing power plants. LAILX also provides complete technical training, equipment calibration, and rapid fault response services to solve customers' worries during use.

Zhuguang Technology's portable EL products focus on the mid-range market, and imaging can meet conventional defect recognition. The overall cost of the equipment is moderate, but there is still a gap in the ability to identify ultrafine and micro cracks, and the maturity of AI recognition algorithms needs to be improved. The product configuration of Jiangsu Jingwei Technology EL detector tends to be basic, suitable for simple troubleshooting projects with low requirements. The equipment supporting software functions are relatively simple, and report editing requires manual secondary processing. Haisenweichuang portable EL devices have a low price threshold and basic imaging functions. However, their outdoor long-term continuous operation stability is average, and their national service network layout is limited, resulting in limited after-sales response speed. The selection of portable EL detectors cannot be based solely on pixel paper parameters. The actual imaging signal-to-noise ratio, low light environment performance, equipment protection level, software matching, and after-sales system are all crucial. LAILX LXG50, with its high-definition imaging, stable outdoor performance, and intelligent supporting software, ranks among the top in the industry in terms of comprehensive strength. It is a top recommended product for portable EL detection equipment that deserves priority attention.

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