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{{Semantic Element
 
{{Semantic Element
 
|label=Cell manufacturing/Electrolyte Filling
 
|label=Cell manufacturing/Electrolyte Filling
|description===Production process==
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|description====Production process===
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*After the packaging process the electrolyte is filled in.
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*Electrolyte filling follows the packaging process
*During electrolyte filling, a distinction must be made between the sub-processes "filling" and "wetting".
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*The electrolyte filling process consists of the two sub-processes "filling" and "wetting"
*The electrolyte is filled into the cell under vacuum (filling) with the help of a high-precision dosing needle.
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*Filling: Electrolyte is filled into the cell under vacuum
*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).
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*Wetting: By supplying gas and/or generating a vacuum, the capillary effect in the cell is activated  
*Evacuation and partial filling are repeated several times depending on the manufacturer and cell type.
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*Evacuation and partial filling repeated several times  
*Finally, the pouch foil is sealed under vacuum.
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*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.
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*Electrolyte is usually a purchased substance; sets high requirements on process environment (fire protection, extraction, etc.)
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==Process parameters & requirements==
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===Process parameters & requirements===
    
*Geometry of the dosing needle
 
*Geometry of the dosing needle
 
*Working pressure: approx. 0.01 mbar
 
*Working pressure: approx. 0.01 mbar
*Consistent, continuous or cyclic filling to ensure homogeneous electrolyte distribution
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*Homogeneous electrolyte distribution
*Very dry environment necessary
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*Necessity of very dry environment
*Gravimetric control of the electrolyte quantity
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*Control of electrolyte quantity
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==Technology alternatives==
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===Quality influences===
No alternatives in series production.
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==Quality influences==
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*Dosing method
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*Geometry and closing mechanism of dosing
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*Electrolyte transport system
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*Dosing method (e.g. dosing pump)
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===Quality features===
*Geometry and closing mechanism of the dosing needle
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*Electrolyte transport system (piping, etc.)
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==Quality features==
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*Dosing and distribution accuracy of electrolyte in the cell
 
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*Electrolyte residues in the sealing seam
*Dosing and distribution accuracy of the electrolyte in the cell
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*No electrolyte residues in the sealing seam
   
*Tightness of the sealed cell
 
*Tightness of the sealed cell
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==Source==
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===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
 
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
 
|relations={{Semantic Link
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