Cell manufacturing/Aging

{{GlossaryEntry}}{{Semantic Element
|label=Cell manufacturing/Aging
|description=
====Production process====

*Final step in cell production
*Process aims at for quality assurance
*Cell characteristics performance are monitored over a period of up to three weeks: Regular measurment of open circuit voltage (OCV)
*Aging differentiation: High temperature (HT) and normal temperature (NT) aging; usual againg sequence: first, HT aging and, then, NT aging
*Storage in so-called aging shelves and/or towers
*Quality assurance: No significant change in the cell properties over the entire period of time 
*Aging duration depends strongly on cell manufacturer and used chemistry 

====Process parameters & requirements====

*State of charge of the cell at the beginning of aging: 80 % - 100 % SOC
*Aging time: up to 3 weeks
*Normal temperature approx. 22°C, high temperature approx. 30°C - 50°C

====Technology alternatives====

*Different procedures for sequence and duration of HT and NT aging (depending on cell manufacturer chemistry).

====Quality influences====

*Orientation of cells
*Packing density of the cell good carriers
*Ambient temperature

====Quality features====

*Capacity
*Internal resistance
*Self-discharge rate

====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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