Cell manufacturing/Electrolyte Filling
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{{Semantic Element | {{Semantic Element | ||
|label=Cell manufacturing/Electrolyte Filling | |label=Cell manufacturing/Electrolyte Filling | ||
| − | |description===Production process== | + | |description====Production process=== |
| − | * | + | *Electrolyte filling follows the packaging process |
| − | * | + | *The electrolyte filling process consists of the two sub-processes "filling" and "wetting" |
| − | * | + | *Filling: Electrolyte is filled into the cell under vacuum |
| − | *By | + | *Wetting: By supplying gas and/or generating a vacuum, the capillary effect in the cell is activated |
| − | *Evacuation and partial filling | + | *Evacuation and partial filling repeated several times |
| − | * | + | *Pouch foil is sealed under vacuum |
| − | * | + | *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 | ||
| − | * | + | *Homogeneous electrolyte distribution |
| − | * | + | *Necessity of very dry environment |
| − | * | + | *Control of electrolyte quantity |
| − | == | + | ===Quality influences=== |
| − | |||
| − | + | *Dosing method | |
| + | *Geometry and closing mechanism of dosing | ||
| + | *Electrolyte transport system | ||
| − | + | ===Quality features=== | |
| − | |||
| − | |||
| − | + | *Dosing and distribution accuracy of electrolyte in the cell | |
| − | + | *Electrolyte residues in the sealing seam | |
| − | *Dosing and distribution accuracy of | ||
| − | * | ||
*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 | ||
Revision as of 15:32, 16 November 2021
Description
Production process
- Electrolyte filling follows the packaging process
- The electrolyte filling process consists of the two sub-processes "filling" and "wetting"
- Filling: Electrolyte is filled into the cell under vacuum
- Wetting: By supplying gas and/or generating a vacuum, the capillary effect in the cell is activated
- Evacuation and partial filling repeated several times
- Pouch foil is sealed under vacuum
- Electrolyte is usually a purchased substance; sets high requirements on process environment (fire protection, extraction, etc.)
Process parameters & requirements
- Geometry of the dosing needle
- Working pressure: approx. 0.01 mbar
- Homogeneous electrolyte distribution
- Necessity of very dry environment
- Control of electrolyte quantity
Quality influences
- Dosing method
- Geometry and closing mechanism of dosing
- Electrolyte transport system
Quality features
- Dosing and distribution accuracy of electrolyte in the cell
- 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
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