Cell manufacturing/Vacuum Drying
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< Battery value chain | Process | Cell manufacturingBattery value chain/Process/Cell manufacturing/Vacuum Drying
Description
Production process
- Stacks are stored in a vacuum oven
- During the drying process, residual moisture and solvents are removed from the electrodes, resp., stacks
- Reduction of residual moisture is achieved by evaporation at low temperatures as a result of a low total pressure
- After vacuum drying, stacks are transferred directly to the dry room or dry packed under vacuum
- Vacuum ovens can be operated with inert gas in order to prevent corrosion.
Process parameters & requirements
- Working pressure: 0.07 mbar < p < 1000 mbar
- Drying time: 12 h - 30 h per batch
- Drying temperature: 60°C - 150°C
- Inert gas supply
Quality influences
- Constant heat supply and stable vacuum
- Longer resting times only possible in the dry room
- Inert gas supply against corrosion
Quality features
- Surface condition (cracks, etc.)
- Residual moisture content (no residual moisture desired)
Source
Heimes, H.H.; Kampker, A.; Lienemann, C.; Locke, M.; Offermanns, C.; Michaelis, S.; Rahimzei, E. (2018) Lithium-Ion Battery Cell Production Process; PEM of RWTH Aachen and VDMA, 3rd Edition, ISBN:978-3-947920-03-7
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Outgoing
Subject | Property | Object |
---|---|---|
Cell manufacturing/Vacuum Drying | HasSuccessor | Cell manufacturing/Stacking |
Cell manufacturing/Vacuum Drying | HasPredecessor | Cell manufacturing/Separation |
Incoming
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