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

Semantic Links

Add or edit outgoing links
To edit incoming links, go to the subjects site.

Outgoing

Subject	Property	Object
Cell manufacturing/Aging	HasPredecessor	Cell manufacturing/Degassing
Cell manufacturing/Aging	HasSuccessor	Cell manufacturing/EOL Testing