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| − | {{Semantic Element | + | {{GlossaryEntry}}{{Semantic Element |
| | |label=Cell manufacturing/Electrolyte Filling | | |label=Cell manufacturing/Electrolyte Filling |
| − | |description===Production process== | + | |description= |
| | + | ===Production process=== |
| | | | |
| − | *After the packaging process the electrolyte is filled in. | + | *Electrolyte filling follows the packaging process |
| − | *During electrolyte filling, a distinction must be made between the sub-processes "filling" and "wetting". | + | *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. | + | *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). | + | *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. | + | *Evacuation and partial filling repeated several times |
| − | *Finally, the pouch foil is sealed under vacuum. | + | *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. | + | *Electrolyte is usually a purchased substance; sets high requirements on process environment (fire protection, extraction, etc.) |
| | | | |
| − | ==Process parameters & requirements== | + | ===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 | + | *Homogeneous electrolyte distribution |
| − | *Very dry environment necessary | + | *Necessity of very dry environment |
| − | *Gravimetric control of the electrolyte quantity | + | *Control of electrolyte quantity |
| | | | |
| − | ==Technology alternatives== | + | ===Quality influences=== |
| − | No alternatives in series production.
| |
| | | | |
| − | ==Quality influences==
| + | *Dosing method |
| | + | *Geometry and closing mechanism of dosing |
| | + | *Electrolyte transport system |
| | | | |
| − | *Dosing method (e.g. dosing pump)
| + | ===Quality features=== |
| − | *Geometry and closing mechanism of the dosing needle
| |
| − | *Electrolyte transport system (piping, etc.)
| |
| | | | |
| − | ==Quality features==
| + | *Dosing and distribution accuracy of electrolyte in the cell |
| − | | + | *Electrolyte residues in the sealing seam |
| − | *Dosing and distribution accuracy of the electrolyte in the cell | |
| − | *No electrolyte residues in the sealing seam | |
| | *Tightness of the sealed cell | | *Tightness of the sealed cell |
| | | | |
| − | ==Source== | + | ===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 |
| − | |property=Has predecessor | + | |property=HasPredecessor |
| | |value=Battery value chain/Process/Cell manufacturing/Packaging | | |value=Battery value chain/Process/Cell manufacturing/Packaging |
| | }}{{Semantic Link | | }}{{Semantic Link |
| − | |property=Has successor | + | |property=HasSuccessor |
| | |value=Battery value chain/Process/Cell manufacturing/Formation | | |value=Battery value chain/Process/Cell manufacturing/Formation |
| | + | }}{{Semantic Link |
| | + | |property=Category |
| | + | |value=Glossary_Entry |
| | }} | | }} |
| | }} | | }} |
