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Battery value chain/Process/Cell manufacturing/Vacuum Drying (view source)
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, 10:51, 15 June 2021Created page with "{{Semantic Element |label=Cell manufacturing/Vacuum Drying |description===Production process== *The coated daughter rolls are pushed onto a special goods carrier. *The coi..."
{{Semantic Element
|label=Cell manufacturing/Vacuum Drying
|description===Production process==
*The coated daughter rolls are pushed onto a special goods carrier.
*The coils are then stored in a vacuum oven.
*The drying time is approx. 12 h to 30 h. During the drying process, residual moisture and solvents are removed from the coils.
*The reduction of residual moisture is achieved by evaporation at low temperatures as a result of a low total pressure.
*After vacuum drying has been completed, the coils are transferred directly to the dry room or dry packed under vacuum.
*The vacuum ovens are often used as air locks into the dry room (for daughter rolls).
*In addition, it is possible to operate the vacuum ovens 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
==Technology alternatives==
*Continuous dryers: In contrast to the chamber concept, there are also continuous drying processes in which the daughter rolls are transported through a long drying facility in a wound or unwound state.
*Infrared dryer: Both technologies can be supplemented by infrared heating.
==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
|relations={{Semantic Link
|property=Has predecessor
|value=Battery value chain/Process/Cell manufacturing/Separation
}}
}}
|label=Cell manufacturing/Vacuum Drying
|description===Production process==
*The coated daughter rolls are pushed onto a special goods carrier.
*The coils are then stored in a vacuum oven.
*The drying time is approx. 12 h to 30 h. During the drying process, residual moisture and solvents are removed from the coils.
*The reduction of residual moisture is achieved by evaporation at low temperatures as a result of a low total pressure.
*After vacuum drying has been completed, the coils are transferred directly to the dry room or dry packed under vacuum.
*The vacuum ovens are often used as air locks into the dry room (for daughter rolls).
*In addition, it is possible to operate the vacuum ovens 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
==Technology alternatives==
*Continuous dryers: In contrast to the chamber concept, there are also continuous drying processes in which the daughter rolls are transported through a long drying facility in a wound or unwound state.
*Infrared dryer: Both technologies can be supplemented by infrared heating.
==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
|relations={{Semantic Link
|property=Has predecessor
|value=Battery value chain/Process/Cell manufacturing/Separation
}}
}}
