Automatic adjustment of light source for electrolyte moisture analyzer

Product Introduction

The generation pathways of trace water in electrolytes are diverse. In the raw material process, the solvent itself has hygroscopic properties, a small amount of water molecules may remain after lithium salt synthesis, and additives may become sources of moisture if not fully dried. During the production phase, insufficient drying of equipment and pipelines, high environmental humidity, or human error may introduce moisture. During storage and transportation, inadequate packaging sealing or humid external environment can also cause an increase in electrolyte moisture content.

Trace amounts of water pose multiple threats to the performance and safety of lithium-ion batteries. It will undergo hydrolysis reaction with lithium salts such as LiPF6, producing corrosive compounds such as HF, which corrode the positive and negative active materials and current collectors, leading to irreversible capacity reduction and reduced cycle life. Meanwhile, moisture can interfere with the formation and stability of SEI film, reduce Coulombic efficiency, and damage the long-term performance of the battery. The by-product gas from the reaction can also cause an increase in internal pressure, increase the probability of thermal runaway, and cause an increase in internal resistance, affecting power characteristics and low-temperature performance. More seriously, water can trigger multiple side reaction chains, disrupt the internal chemical balance of the battery, and comprehensively weaken the overall performance of the battery. Therefore, it is necessary to strictly control and monitor the moisture content in the electrolyte throughout the production, storage, transportation, and use processes, which is crucial for ensuring the safety, reliability, and lifespan of lithium batteries.

Electrolyte trace water analyzerAdopting a split structure and based on near-infrared absorption spectroscopy technology, high-precision, non-destructive and rapid detection can be achieved. The instrument is equipped with a high stability light source and a constant temperature detection system, integrating fully automatic cleaning function. The optical window of the sensor adopts sapphire prism, and the liquid contact material can be customized. The explosion-proof model reaches ExdIIBT4/T6 or ExdIICT4/T6 level.

This instrument does not require sample pre-treatment, nor does it rely on reagents or consumables, and the detection response time can reach seconds. Its ultra long lifespan light source can work continuously for 30000 hours, reducing maintenance frequency and usage costs. Users can choose an automatic cleaning module to achieve automatic cleaning of optical windows and avoid pollution interference. The system has the function of adaptive adjustment of light source intensity, compensating for light attenuation and ensuring long-term accuracy of measurement. The design without moving parts improves the stability of the equipment, and combined with years of experience algorithms, it can resist the interference of solid particles or crystals. Supports 4-20mA&RS485 signal output, with alarm and control functions, and can customize exclusive data models to seamlessly integrate with existing control systems.

Technical Specifications