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| − | {{Semantic Element | + | {{GlossaryEntry}}{{Semantic Element |
| | |label=Cell manufacturing/Separation | | |label=Cell manufacturing/Separation |
| − | |description===Production process== | + | |description= |
| | + | ===Production process=== |
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| − | *Separation is necessary for the production of the pouch cell and describes the separation of * anode, cathode and separator sheets from the (bought) roll material (daughter rolls). | + | *Separation is the separation of anode, cathode, and separator sheets from roll material (daughter rolls) |
| − | *The dried daughter rolls are unwound and fed to the separation tool. | + | *Dried daughter rolls are fed to separation machine |
| − | *The cutting process is usually carried out with a shear cut (punching tool) in a continuous process. | + | *Punching tool carries out shear cut in a continuous process |
| − | *Depending on the system concept, the individual sheets (coated on both sides) are stored in a magazine or transferred directly to the next process step. | + | *Individual sheets (coated on both sides) are transferred directly to the next process step |
| − | *The blank edge of the sheets are later used as the welding area for the cell tabs. | + | *Blank edge of sheets are later used as welding area for cell tabs |
| − | *The waste as well as the cutting dusts are extracted and transported away in the process.
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| − | ==Process parameters & requirements== | + | ===Process parameters & requirements=== |
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| | *Separation time punching: approx. 0.2 s/sheet | | *Separation time punching: approx. 0.2 s/sheet |
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| | *Punching tool: Very good cutting edge quality (depending on wear resistance) | | *Punching tool: Very good cutting edge quality (depending on wear resistance) |
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| − | ==Technology alternatives== | + | ===Technology alternatives=== |
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| − | *Laser ablation: A guided laser beam allows the active material to be ablated again at defined points, thus exposing the carrier foil. This technology offers a high flexibility with regard to the positioning of the cell tabs. | + | *Laser ablation: Guided laser beam allows active material to be ablated again at defined points, thus exposing the carrier foil |
| − | *Laser cutting: Instead of a conventional punching tool, the electrodes can also be cut out by a laser. | + | *Laser cutting: Electrodes not pounched, but cut out by laser |
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| − | ==Quality influences== | + | ===Quality influences=== |
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| | *Heat-affected zone and suction of evaporated material during laser cutting | | *Heat-affected zone and suction of evaporated material during laser cutting |
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| | *Cutting/punching speed | | *Cutting/punching speed |
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| − | ==Quality features== | + | ===Quality features=== |
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| | *Cutting edge geometry (e.g. smearing of the active material over the cutting edges) | | *Cutting edge geometry (e.g. smearing of the active material over the cutting edges) |
| | *Thermal and mechanical stress during the cutting process | | *Thermal and mechanical stress during the cutting process |
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| − | ==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 |
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| | |relations={{Semantic Link | | |relations={{Semantic Link |
| | |property=Has successor | | |property=Has successor |