Cylindrical Cell Manufacturing Process

• Use furnace to sinter raw cathode active material and anode active material.
• Use milling machine to mill materials into smaller-sized particles.
• Mix active, conductive and binder material into paste under vacuum using mixer.
• Use a coater to coat paste onto current collector to create electrode.
• Use a heater to dry the newly-created electrodes.
• Use the rolling press (calendar) to roll the electrode to required thickness.

Winding Method

• Use Slitting Machine to slice electrode sheet into strips.
• Weld current collector and tab together using Ultrasonic Welding Machine.
• Use Winding Machine to wind strips of Anode, Separator and Cathode into cell core.
• Use Short-Circuit Detector to test the cell’s integrity.
• Dry the cell using a vacuum oven.

• Use Deep Spot Welding Machine to weld one tab from the cell to the bottom of the closing end inside cylinder case.
• After inserting the cell core, use Grooving Machine to groove cell case and fix location of battery core for later sealing.
• Use Welding Machine to weld the other tab from the cell to the cap.
• Fill the case with electrolyte in vacuum/globe box using Electrolyte Filling System.
• Insert & align the cap to open end of case and seal the opening using Sealing Machine inside glove box.
• Using Battery Analyzer, charge and discharge the assembled battery to activate the cell.
• Wrap the case with heat-shrinkable PVC for isolation of positive & negative terminals.

• Test the newly-created battery’s performance using a Battery Analyzer.
• Use an Impedance Tester to measure the battery’s internal resistance.