The electrode coater is a machine that coats and dries the active material for lithium-ion batteries on aluminum foil and copper foil. The development direction of lithium-ion battery production facilities in recent years is focused on maximizing productivity by running wide-width current collectors at high speed. PNT is applying various technologies to meet these needs. By designing drying chmabers with a length of 80m on each floor, the production speed can be maximized up to 100m/min by sequentially coating both sides. By applying up/down opening chmber type, energy efficiency is increased by more than 30% compared to the conventional trunk type, and maintenance convenience is improved.
Electrode roll press is a machine that rolls the coated and dried electrode to a certain thickness. The most important thing during rolling is to precisely control the gap between the main rollers so that a constant linear pressure is applied to the entire electrode. PNT uses a hydraulic servo control system to control the position of the lower roller. Through this, reproducibility within 1um can be secured. When rolling the cathode electrode, hot rolling can be applied to achieve a higher compression rate, and in the case of the anode electrode, spring-back can be prevented through tandem rolling. In addition, we also have various technologies such as wrinkle removal technology using various special functions such as high frequency induction heating unit and 1000N high tension web stretching unit.
Electrode slitter is a machine that slits the coated or un-coated part of the rolled electrode to the desired width. PNT applies block knife cartridge system to ensure precise slitting width deviation. In addition, oil lubrication cleaning unit, turbo brush, suction, magnetic bar, etc. are applied to prevent foreign substances from entering during the process. Air expanding friction shafts of 3 inches or 6 inches are installed in the rewinder to configure the machine to rewind with a constant tension for each reel after slitting.
The electrode notching machine is a facility that cuts continuously coated electrodes and makes tabs to get electrode sheets. High-speed mass production with 72m/min line speed is possible.