In the context of the large-scale development of the domestic photovoltaic industry and the proliferation of distributed power stations, the actual power generation performance testing of photovoltaic modules and strings has become a core requirement for power station acceptance, daily operation and maintenance, fault diagnosis, and third-party quality arbitration. Traditional large-scale IV testing equipment is bulky, relies on fixed mains power, and is cumbersome to transport and debug. It can only be used at fixed points in laboratories or factories, and has obvious limitations when facing mobile operation scenarios such as mountain photovoltaic, household rooftop photovoltaic, fishery photovoltaic complementary, and inventory power station inspection. Suzhou Laikesi New Energy Technology (LAILX) has been deeply engaged in the research and development of photovoltaic testing instruments for more than ten years, focusing on the pain points of outdoor on-site testing. It has independently developed and launched the LX-PV31 portable IV tester, which has four core advantages: lightweight body, high-precision measurement, compatibility of all types of components, and intelligent data processing. It connects the entire process of photovoltaic on-site IV performance testing and provides an integrated and reliable solution for mobile testing in the photovoltaic industry. Current voltage power curve detector

The LX-PV31 portable IV tester strictly follows the national standards of IEC 60904 and GB/T 6495 for photovoltaic testing. It is equipped with a self-developed high-speed digital electronic load and a 24 bit high-precision data acquisition module. The measurement error of current and voltage is controlled within ± 0.5%. It can fully capture the I-V curve of components, accurately extract more than ten core electrical performance parameters such as open circuit voltage Voc, short-circuit current Isc, maximum power Pmax, fill factor FF, conversion efficiency, etc. The measurement repeatability and stability reach the same level as laboratory desktop equipment, fully meeting the professional testing needs of power station completion acceptance, annual energy efficiency survey, attenuation fault diagnosis, component incoming sampling, etc. The device is compatible with monocrystalline silicon, polycrystalline silicon TOPCon、HJT、 Half piece, double glass, thin film and other types of photovoltaic modules, supporting single module and small string synchronous testing, with a voltage range covering 0-1500V and a current range of 0-20A, suitable for mainstream high-power modules in the current market, can complete full category testing without replacing accessories, greatly reducing equipment procurement and operation costs.
For outdoor mobile work scenarios, LX-PV31 has been comprehensively optimized for portability and endurance design. The whole machine adopts an integrated shock-absorbing box, with a weight of less than 6kg. It is equipped with a storable telescopic rod and anti slip roller, making it easy for a single person to transport to complex work areas such as roofs, slopes, and water platforms. The device is equipped with a large capacity industrial grade lithium battery, which can continuously detect for more than 8 hours when fully charged. There is no need to carry a generator or external power source in outdoor environments without mains electricity; Equipped with fast plug-in testing cables and self-locking design, the wiring can be completed in 30 seconds, eliminating the complicated wiring and debugging steps of traditional equipment. The complete IV curve acquisition of a single component only takes 2 seconds, which is more than three times more efficient than traditional equipment detection. Large centralized power stations can complete batch testing of hundreds of components in a single day, effectively shortening the operation and maintenance period and reducing labor costs.

The intelligent digital function is the core highlight that sets LX-PV31 apart from ordinary portable IV devices. The device is equipped with a high-definition touch display screen, which visualizes the complete I-V curve and various performance parameters in real time. It supports on-site real-time interpretation of performance defects such as component attenuation, shunt, hidden cracking, PID failure, etc; Built in wireless WIFI transmission module, the detection data is synchronously uploaded to the supporting LAILX photovoltaic detection management APP. It supports component barcode scanning input, GPS positioning marking of defect points, and automatic storage of raw data for each test curve. The local storage capacity can retain 100000 sets of test records, and the data will never be lost permanently. The supporting PC professional analysis software can export standardized testing reports with one click, automatically generate performance comparison curves and annual attenuation analysis reports. The report format conforms to the general standards of third-party testing institutions and power grid acceptance, without the need for manual secondary sorting, greatly simplifying the testing and archiving process.
The equipment casing adopts IP65 industrial grade dustproof and waterproof protection level, and the internal circuit board is equipped with constant temperature heat dissipation and shockproof buffer structure, which can adapt to a wide temperature range of -20 ℃ to 60 ℃ working environment. It can operate stably under extreme outdoor conditions such as high salt spray along the coast, northwest sand and dust, and rainy and humid south, without fear of complex outdoor climate erosion. At the same time, LAILX provides full cycle supporting services for LX-PV31, with a national level metrology calibration certificate attached to the factory. The equipment supports lifelong free firmware upgrades and remote technical guidance, with nationwide coverage of on-site calibration and fault repair service outlets, solving users' worries about equipment maintenance in the later stage.

The current stock of photovoltaic power stations continues to expand, with power attenuation and hidden failures of existing components year by year. The market demand for on-site mobile detection equipment continues to rise. The LX-PV31 portable IV tester combines high precision, portability, intelligence, and high adaptability, breaking the limitations of traditional IV testing equipment scenarios and achieving outdoor implementation of laboratory level testing capabilities. It is widely used in various scenarios such as photovoltaic EPC general contracting, power station operation and maintenance enterprises, third-party testing institutions, power grid quality inspection, and university research laboratories. In the future, LAILX in Suzhou will continue to deepen its research and development of photovoltaic detection technology, iterate its portable detection instrument product line, and use domestically produced high-precision detection equipment to help improve the quality and efficiency of the photovoltaic industry, promoting the independent and controllable high-quality development of new energy detection equipment.

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