TY - GEN
T1 - Accelerated aging characterization of lithium-ion cells
T2 - 14th International Conference on Ecological Vehicles and Renewable Energies, EVER 2019
AU - Gewald, Tanja
AU - Lienkamp, Markus
AU - Lehmkuhl, Dirk
AU - Hahn, Alexander
N1 - Publisher Copyright:
© 2019 IEEE.
PY - 2019/5
Y1 - 2019/5
N2 - Cell selection is a mandatory first step for the design of automotive battery systems. Thereby, aging characterization enables quantification of aging-related effects at an early stage. For aging characterization in industrial applications, an accelerated implementation is required. Applied methods for acceleration must not alter the composition of aging, and therefore must not initiate different aging mechanisms in comparison to the non-accelerated reference case. With regard to temperature dependence of calendar aging, this requirement of mechanism consistency corresponds to the validity of the Arrhenius dependency. This paper presents the results of a test series on calendar aging at temperatures ranging from 25°C to 80°C. Mechanism consistency is investigated using Differential Voltage Analysis (DVA), proving additional aging mechanisms beyond 60°C. In conclusion, the limitations of Arrhenius dependency for the investigated cells are discussed.
AB - Cell selection is a mandatory first step for the design of automotive battery systems. Thereby, aging characterization enables quantification of aging-related effects at an early stage. For aging characterization in industrial applications, an accelerated implementation is required. Applied methods for acceleration must not alter the composition of aging, and therefore must not initiate different aging mechanisms in comparison to the non-accelerated reference case. With regard to temperature dependence of calendar aging, this requirement of mechanism consistency corresponds to the validity of the Arrhenius dependency. This paper presents the results of a test series on calendar aging at temperatures ranging from 25°C to 80°C. Mechanism consistency is investigated using Differential Voltage Analysis (DVA), proving additional aging mechanisms beyond 60°C. In conclusion, the limitations of Arrhenius dependency for the investigated cells are discussed.
KW - Aging mechanisms
KW - Arrhenius
KW - Batteries
KW - Calendar aging
KW - Differential voltage analysis.
KW - Lithium-ion cell
KW - Temperature dependency
UR - http://www.scopus.com/inward/record.url?scp=85072319019&partnerID=8YFLogxK
U2 - 10.1109/EVER.2019.8813534
DO - 10.1109/EVER.2019.8813534
M3 - Conference contribution
AN - SCOPUS:85072319019
T3 - 2019 14th International Conference on Ecological Vehicles and Renewable Energies, EVER 2019
BT - 2019 14th International Conference on Ecological Vehicles and Renewable Energies, EVER 2019
PB - Institute of Electrical and Electronics Engineers Inc.
Y2 - 8 May 2019 through 10 May 2019
ER -
