Lithium Ion Pouch Cell Assembly

Process Flow

Recommend Equipment

Furnace to sinter raw active material

(Cathode & Anode)

Milling Machine to mill material to smaller particles

Mixer to mix active, conductive and binder material into paste within vacuum

Coater to coat paste onto current collector; attach heater to dry

Rolling Press (Calendar) to roll the electrode to proper thickness

Choose method

Stacking

OR

Winding

All consumables & materials are available

e.g. Al Film, Metallic Strip Terminal, Tabs

Procedure

Process Flow

Recommend Equipment

Stacking

6: Electrode Die Machine to cut out electrode with lead

7: Stacking Machine to stack

layers in form of Anode + Separator +

Cathode + Separator +…

Winding

6: Slitting Machine to slit electrode sheet to strip

7: Winding Machine to wind

strips layers in form of Anode +

Separator + Cathode + Separator +

8: Ultrasonic Welding Machine to first weld current collector and then tab together

9: Short-circuit Detector to test if the

cell has a short-circuit

10: Vacuum Oven to dry the cell if no short-circuit

Process Flow

Recommend Equipment

11: Cup Forming Machine to punch cup-

shape and gas receiver on Aluminium lamination sheet and then place cell into the cup

12: Top & Side Heat Sealing machine to seal the top and shorter side after double-up

Glove Box:

13: Electrolyte Filling System to fill electrolyte in vacuum/glove box

14: De-gas by removing air from the electrolyte

15: Vacuum Primary-Sealing Machine to

seal longer side (the side with gas receiver)

under vacuum after electrolyte is filled

Battery Analyzer to Charge/Discharge the cell for battery formation and drive the unnecessary gas caused by electrode chemical reaction into gas receiver.

17: Cutting off the gas receiver and Vacuum Sealing Machine for final sealing on the cutting edge under vacuum conditions within glove box