Lithium battery manufacturing requires extremely strict standards for water and oxygen content as well as gas supply stability in production environments. Six core processes including electrolyte injection, cell formation, module packaging, battery drying, pole piece storage and aging test all need high-purity nitrogen to build an anhydrous and oxygen-free inert protective atmosphere. Trace water vapor and oxygen invading the production line will trigger side reactions inside battery cells, causing batch quality problems such as battery bulging, liquid leakage, capacity attenuation and shortened cycle life. The traditional liquid nitrogen outsourcing gas supply mode has defects including uncontrollable gas supply parameters, untraceable data and no early warning for gas supply fluctuation, which cannot meet the requirements of digitalized and refined production in the lithium battery industry. Centering on full-link digital data monitoring, closed-loop data regulation and data traceability management, the lithium battery nitrogen generator system optimizes the overall operation logic based on massive field operation data collected from lithium battery production sites. All gas production parameters, operating parameters and environmental parameters support real-time visual collection and accurate adjustment. It guarantees gas supply safety and production yield in the whole lithium battery manufacturing process through objective data, and is compatible with production lines of cylindrical batteries, square batteries, pouch batteries and energy storage batteries.

　　Accurate nitrogen purity data control matches graded gas supply standards of different lithium battery processes and avoids hidden risks caused by unqualified purity. Different working stations of lithium battery production have distinct requirements for nitrogen purity. Equipped with a high-precision online oxygen content detector, the system realizes real-time purity monitoring with an accuracy of 0.1% and transmits all data without delay. For highly sensitive core processes including electrolyte injection, vacuum baking and cell sealing, the system outputs constant 99.999% high-purity nitrogen, locking the oxygen content inside the furnace within 20ppm and water vapor content within 10ppm permanently to prevent corrosion and damage to battery cells caused by water and oxygen from the data perspective. For ordinary auxiliary processes such as pole piece transfer, moisture-proof storage and production line purging, the system automatically reduces nitrogen purity to 99.9% and matches gas production capacity dynamically according to real-time gas consumption data. Compared with nitrogen generators with fixed gas output mode, this data-based graded gas supply mode cuts 22% of invalid energy consumption with a daily power saving of 38 degrees, realizing refined energy-saving control through quantified energy consumption data.

　　Dynamic closed-loop regulation of pressure and dew point eliminates production defects caused by gas supply fluctuation. Automated lithium battery production lines operate 24 hours nonstop, with instantaneous gas consumption fluctuation reaching 35%. Slight gas pressure fluctuation will destroy the inert atmosphere in closed cavities. Fitted with a high-frequency data acquisition module that collects four core data including gas supply pressure, inlet air dew point, cavity negative pressure and pipeline flow once per second, the system carries out automatic compensation and adjustment within milliseconds via intelligent PLC algorithm. It strictly controls gas supply pressure fluctuation within ±0.005MPa, far better than the industrial conventional standard of ±0.02MPa, and keeps the pressure dew point of output nitrogen steadily below -60℃ to completely avoid condensation of water vapor. Actual production data shows that after adopting the data closed-loop regulation system, the battery defect rate caused by unstable gas supply drops from 1.27% to 0.19%. For a production line with a daily output of 50,000 battery cells, 635 defective products can be reduced every day, cutting production scrap cost directly.

　　Real-time traceable early warning of full-equipment operating data reduces unexpected shutdown failures and operation and maintenance losses. The whole system is equipped with an independent industrial data background, recording more than 20 operating data all day long, including inlet air pressure, molecular sieve adsorption duration, filter element loss degree, equipment start-stop times and cumulative gas production. All data can be stored locally for one year and saved permanently on the cloud, meeting the strict production data traceability audit requirements of the lithium battery industry. Supported with multi-level data early warning thresholds, the system can predict hidden faults such as aging consumables, micro pipeline leakage and abnormal air compressor load in advance. Once the molecular sieve adsorption efficiency drops to 90% of the rated value or the filter blockage pressure difference exceeds 0.03MPa, the system will send audible and visual alarms as well as remote SMS reminders immediately. Actual operation and maintenance data proves that data-based predictive maintenance reduces the sudden failure rate of equipment by 76%, and shortens the annual unplanned shutdown time to less than 8 hours, ensuring uninterrupted operation of lithium battery production lines.

　　Visualized accounting of full-cycle gas consumption cost data provides intuitive economic benefit comparison with outsourced gas supply modes. Built with an intelligent cost statistics module, the system automatically generates daily, weekly, monthly and annual gas consumption cost reports based on real-time gas production and energy consumption data, clearly showing the nitrogen gas consumption cost per single battery cell. According to measured data from hundreds of lithium battery factories, deploying the lithium battery nitrogen generator system on site cuts the gas cost per cubic meter of nitrogen by 61% and the total annual gas consumption cost by 47% compared with the traditional liquid nitrogen procurement mode. Meanwhile, it saves supporting labor and site costs caused by liquid nitrogen transportation, tank replacement and low-temperature tank maintenance. Unlike ordinary nitrogen generators on the market that only focus on gas production function and ignore data control, this dedicated nitrogen generation system for lithium batteries takes full-domain data collection, data regulation and data traceability as core advantages. It fits the rigid production specifications of intelligent manufacturing, traceable data and controllable parameters in the lithium battery industry, builds a solid quality defense line for battery production with accurate data, and provides digital, high-stability and traceable on-site nitrogen generation solutions for power battery and energy storage battery manufacturers.