In the intelligent manufacturing system of energy storage lithium batteries, compressed air, together with electricity, pure water and nitrogen, constitutes the four core process media. As the core equipment for air supply, air compressors run through the whole production flow including cathode and anode material preparation, electrode processing, cell assembly, electrolyte injection and sealing, as well as PACK integration. They act as critical infrastructure determining the yield, cycle life and production safety of energy storage batteries. The cleanliness, dryness and pressure stability of supplied air directly affect enterprise output, product consistency and operating costs.

In the front-end material preparation stage, air compressors supply high-pressure air for jet mills to realize ultrafine grinding of lithium salt and graphite powder. Stable air pressure restricts pressure fluctuation within ±0.02 MPa to guarantee uniform powder particle size. Meanwhile, pneumatic conveying powered by compressed air realizes closed powder transportation to prevent dust pollution. During electrode production, clean compressed air drives coating air knives and vacuum manipulators for foil purging, electrode grabbing and rolling tension adjustment. Trace oil or moisture impurities will trigger coating defects, which may further lead to cell self-discharge and short-circuit hazards.

Cell assembly and electrolyte injection impose the strictest requirements on air source control. Pneumatic cylinders at winding and stacking stations achieve precise alignment of separators and electrodes. Before electrolyte injection, ultra-low dew point compressed air is used to purge cell inner cavities to thoroughly remove residual moisture; excessive moisture will decompose electrolyte and cause cell swelling and failure. In the PACK section, compressed air drives air tightness testing equipment, assembly fixtures and dust removal devices to ensure the sealing performance and assembly precision of energy storage modules.

Energy storage battery workshops fully enforce the ISO 8573-1 Class 0 oil-free air standard. Dry oil-free air compressors are mandatory, matched with adsorption dryers and multi-stage precision filters to keep the air pressure dew point below -40°C, eliminating contamination of cells by oil and moisture at the source. Modern energy storage production lines operate nonstop 24 hours a day. Permanent magnet variable frequency and centrifugal oil-free air compressor units adapt to working conditions with fluctuating large air flow, delivering stable air supply while cutting energy consumption and complying with the industry’s green and low-carbon development targets.

Air compressors are far more than auxiliary equipment; they serve as the "power heart" of lithium energy storage production lines. A high-quality compressed air system stabilizes production rhythms, drastically reduces defective product losses and avoids battery safety risks, serving as an irreplaceable core guarantee for energy storage enterprises to achieve large-scale, high-quality mass production.