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Battery value chain/Process/Cell manufacturing/Electrolyte Filling (view source)
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, 11:59, 15 June 2021Created page with "{{Semantic Element |label=Cell manufacturing/Electrolyte Filling |description===Production process== *After the packaging process the electrolyte is filled in. *During ele..."
{{Semantic Element
|label=Cell manufacturing/Electrolyte Filling
|description===Production process==
*After the packaging process the electrolyte is filled in.
*During electrolyte filling, a distinction must be made between the sub-processes "filling" and "wetting".
*The electrolyte is filled into the cell under vacuum (filling) with the help of a high-precision dosing needle.
*By applying a pressure profile to the cell (supply of inert gas and/or generation of a vacuum in alternating operation), the capillary effect in the cell is activated (wetting).
*Evacuation and partial filling are repeated several times depending on the manufacturer and cell type.
*Finally, the pouch foil is sealed under vacuum.
*The electrolyte (e.g. LiPF6) is usually a purchased component and sets high requirements on the process environment (fire protection, extraction, etc.), due to its classification as a hazardous substance.
==Process parameters & requirements==
*Geometry of the dosing needle
*Working pressure: approx. 0.01 mbar
*Consistent, continuous or cyclic filling to ensure homogeneous electrolyte distribution
*Very dry environment necessary
*Gravimetric control of the electrolyte quantity
==Technology alternatives==
No alternatives in series production.
==Quality influences==
*Dosing method (e.g. dosing pump)
*Geometry and closing mechanism of the dosing needle
*Electrolyte transport system (piping, etc.)
==Quality features==
*Dosing and distribution accuracy of the electrolyte in the cell
*No electrolyte residues in the sealing seam
*Tightness of the sealed cell
==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/Packaging
}}
}}
|label=Cell manufacturing/Electrolyte Filling
|description===Production process==
*After the packaging process the electrolyte is filled in.
*During electrolyte filling, a distinction must be made between the sub-processes "filling" and "wetting".
*The electrolyte is filled into the cell under vacuum (filling) with the help of a high-precision dosing needle.
*By applying a pressure profile to the cell (supply of inert gas and/or generation of a vacuum in alternating operation), the capillary effect in the cell is activated (wetting).
*Evacuation and partial filling are repeated several times depending on the manufacturer and cell type.
*Finally, the pouch foil is sealed under vacuum.
*The electrolyte (e.g. LiPF6) is usually a purchased component and sets high requirements on the process environment (fire protection, extraction, etc.), due to its classification as a hazardous substance.
==Process parameters & requirements==
*Geometry of the dosing needle
*Working pressure: approx. 0.01 mbar
*Consistent, continuous or cyclic filling to ensure homogeneous electrolyte distribution
*Very dry environment necessary
*Gravimetric control of the electrolyte quantity
==Technology alternatives==
No alternatives in series production.
==Quality influences==
*Dosing method (e.g. dosing pump)
*Geometry and closing mechanism of the dosing needle
*Electrolyte transport system (piping, etc.)
==Quality features==
*Dosing and distribution accuracy of the electrolyte in the cell
*No electrolyte residues in the sealing seam
*Tightness of the sealed cell
==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/Packaging
}}
}}
