Pouch Cell Laboratory R&D Process:
Suit for Battery Type: Pouch,Cylinderical,Polymer,Al shell, Machines:Battery Lab Equipment ,Manual,Semi-suto,Auto machine and line,Battery Testing Machines.
| Step | Process | Recommended equipment | |
| Electrode preparation | 1. Mix and grind the prepared powder materials. | Ball Mill | |
| 2. Mixing the prepared positive and negative electrode materials under vacuum. | Mixer | ||
| 3. Use a viscometer to measure the viscosity of the slurry. | Viscometer | ||
| 4. Use iron removal filtration equipment to filter the slurry. | Filter | ||
| 5. Coat the positive and negative electrode materials on the current collector respectively and dry them. |
Coater |
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| 6. Calender the positive and negative electrode sheets to reduce the thickness and increase the density. | Calendering Machine | ||
| Battery Cell Preparation | Stacking process | 1. Cut the electrode into rectangular sheets of specified size. | Die Cutting Machine |
| 2. Stack the positive and negative electrode sheets and separator in order (separator + positive electrode + separator + negative electrode). | Stacking Machine | ||
| Winding process | 1. Cut the electrode and separator into long strips of specified width. | Slitting Machine | |
| 2. Stack the positive and negative electrode sheets and separator in order (separator + positive electrode + separator + negative electrode). And then start winding them to make battery cells. | Winding Machine | ||
| Battery tabs and current collector welding | 1. Use an ultrasonic spot welder to weld the battery tab and current collector. | Ultrasonic Spot Welder | |
| 2. Measure whether the battery cell is short-circuited. | Short circuit tester | ||
| Battery cells drying | Place the battery cells in a vacuum drying oven for drying. | Vacuum Drying Oven | |
| Battery Assembly Process | 1. Aluminum laminated film pouch cell case forming. Place the cells into the formed aluminum laminated film. | Pouch Cell Case Forming Machine | |
| 2. Heating sealing the top and side of the aluminum laminated film. | Top and Side Sealing Machine | ||
| 3. Move the battery ccells into the glove box. | Glove Box | ||
| 4. Filling an appropriate amount of electrolyte into the battery cells in the glove box. | Electrolyte Filling Machine | ||
| 5. Place the battery cells into the vacuum diffusion chamber in the glove box. A vacuum diffusion chamber is used to fully infiltrate the battery electrodes with the filled electrolyte. | Vacuum Diffusion Chamber | ||
| 6. Use a vacuum pre-sealing machine to seal the cells in the glove box. | Vacuum Pre-Sealing Machine | ||
| 7. Charge and discharge the battery 3 times to activate the battery, then puncture the air bag to discharge the gas and excess electrolyte. | Formation Machine | ||
| 8. Complete the secondary sealing of the cells in the glove box. | Vacuum Sealing Machine | ||
| 9. Cut off the excess edges of the aluminum laminated film casing of the cells and fold the edges. | Trimming Machine | ||
| Battery testing | 1. Use battery tester to test the capacity and cycle tests. | Battery Tester | |
| 2. Use an internal resistance tester to measure the internal resistance of the cells. | Internal Resistance Tester | ||
