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| − | {{Semantic Element | + | {{GlossaryEntry}}{{Semantic Element |
| | |label=Cell manufacturing/Stacking | | |label=Cell manufacturing/Stacking |
| − | |description===Production process== | + | |description= |
| | + | ===Production process=== |
| | | | |
| − | *During the stacking process the separated electrode sheets are stacked in a repeating cycle of anode, separator, cathode, separator, etc. | + | *Separated electrode sheets are stacked in a repeating cycle of anode, separator, cathode, separator, etc. |
| − | *A wide variety of stacking technologies exist, which are usually patented by specific manufacturers. | + | *Classic variant of stacking is the so-called Z-folding |
| − | *A classic variant of stacking is the so-called Z-folding.
| + | *Anode and cathode sheets are inserted alternately from the left and right into the z-shaped folded separator; separator is used as endless tape and cut off after the stacking process is completed |
| − | *The anode and cathode sheets are inserted alternately from the left and right into the z-shaped folded separator. The separator is used in the form of an endless tape and is cut off after the * stacking process. | + | *Finalized cell stack is fixed with adhesive tape |
| − | *The cell stack is finally fixed with adhesive tape. | + | *Sheets are transported and positioned by vacuum grippers |
| − | *The exact positioning of the individual sheets is considered as the central quality criterion.
| + | *Depending on cell specification, the cell stack consists of a specific number of individual layers |
| − | *The sheets are usually transported and positioned by vacuum grippers. | |
| − | *Depending on the cell specification, a cell stack can consist of up to 120 individual layers. | |
| | | | |
| − | ==Process parameters & requirements== | + | ===Process parameters & requirements=== |
| | + | <gallery> |
| | + | File:Z-Falter Fraunhofer ISC.jpg|Z-Folder @ Fraunhofer ISC |
| | + | File:Z-Falter Fraunhofer ISC Progress.jpg|Z-Folder during stacking |
| | + | File:Z-Falter Fraunhofer ISC Result.jpg|Resulting electrode stack |
| | + | </gallery> |
| | | | |
| | *Z-folding: Individual anode and cathode sheets are placed laterally in the Z-folded separator web | | *Z-folding: Individual anode and cathode sheets are placed laterally in the Z-folded separator web |
| − | *Single-sheet stacking: Separator is available as a sheet for stack formation
| |
| | *Stacking accuracy: ± 200 μm - 300 μm | | *Stacking accuracy: ± 200 μm - 300 μm |
| − | *Z-folding and single-sheet stacking : cycle times of 1 s/sheet
| |
| | | | |
| − | ==Technology alternatives== | + | ===Technology alternatives=== |
| | | | |
| | *Lamination process: The individual electrode and separator sheets are laminated onto each other in a continuous process and are then usually pressed together by a heat press. | | *Lamination process: The individual electrode and separator sheets are laminated onto each other in a continuous process and are then usually pressed together by a heat press. |
| | *Pocket Stacking: The cathode sheets are placed in a separator pocket. Afterwards cathode and anode sheets are stacked alternately. | | *Pocket Stacking: The cathode sheets are placed in a separator pocket. Afterwards cathode and anode sheets are stacked alternately. |
| | | | |
| − | ==Quality influences== | + | ===Quality influences=== |
| | | | |
| | + | *Exact positioning of individual sheets as central quality criterion. |
| | *Position detection and alignment of sheets of different sizes with a vacuum gripper | | *Position detection and alignment of sheets of different sizes with a vacuum gripper |
| | *Mechanical pre-tensioning of the separator | | *Mechanical pre-tensioning of the separator |
| | | | |
| − | ==Quality features== | + | ===Quality features=== |
| | | | |
| | *Positioning accuracy of the anode and cathode sheets | | *Positioning accuracy of the anode and cathode sheets |
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| | *Avoidance of electrostatic charging | | *Avoidance of electrostatic charging |
| | | | |
| − | ==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/Vacuum Drying | | |value=Battery value chain/Process/Cell manufacturing/Vacuum Drying |
| | + | }}{{Semantic Link |
| | + | |property=HasSuccessor |
| | + | |value=Battery value chain/Process/Cell manufacturing/Packaging |
| | }} | | }} |
| | }} | | }} |