Step 1 Electrode Sheet Preparation
- Furnace: raw active material (Cathode & Anode)
- Milling Machine: grind & normalize the sintered material
- Mixer: mix active, conductive, and binder material into slurry under vacuum
- Coater: apply layer(s) of slurry onto current collector and dry it with an attached heater
- Rolling Press (calendar): compress the electrode to a desired thickness/density
Step 2 Cell Assembly
Winding Method
- Slitting Machine: slit/cut electrode sheet to strips of desired size
- Ultrasonic Welding Machine: joining of multi-layer electrodes, and/or tabs to collectors
- Winding Machine: form layers of Anode, Separator, and Cathode into a cell core
- Short-circuit Detector: test for integrity of the cell
- Vacuum Oven: remove any moister within the cell
Step 3 Case Sealing
- Spot Welding Machine: allow contact to be made from cell to bottom of case (grounding)
- Grooving machine: create indent on the neck of case to allow for proper seal (after inserting the cell core)
- Welding Machine: attach cell to cap (positive)
- Electrolyte Filling: inject the case with electrolyte under suitable environment within glove box
- Sealing Machine (Crimper): align cap with the open end of case and seal case inside glove box under suitable environment
- Recommend: wrap the newly finished battery with heat-shrinkable PVC for isolation of positive and negative terminals
- Battery Analyzer: charge/discharge the assembled battery for cell activation
Step 4 Battery Testing
Battery Analyzer to test the battery’s performance and Resistance Tester to measure battery’s internal resistance
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