TY - GEN
T1 - Effect of a flexible battery module bracing on cell aging
AU - Ebert, Fabian
AU - Sextl, Gerhard
AU - Lienkamp, Markus
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2017/5/30
Y1 - 2017/5/30
N2 - Lithium-ion battery cells consist either of a stacked or a wound configuration of a separator between two coated electrodes. The expansion of the graphite anode due to lithium intercalation, when charging, leads to a macroscopic expansion of the cell. State of the art rigid battery module bracing causes a periodic pressure build-up over a full charge/discharge cycle and therefore a compression of the battery separator. Furthermore, this results in a reduced diffusivity of the lithium-ions, which can cause lithium plating. Lithium plating is considered as the main cause of (premature) battery aging. In our paper, we present for the first time the investigation of a flexible spring-loaded cell bracing on cell aging by maintaining a nearly constant pressure. In comparison with the rigid bracing, a different aging speed can be observed in favour of the flexible bracing method.
AB - Lithium-ion battery cells consist either of a stacked or a wound configuration of a separator between two coated electrodes. The expansion of the graphite anode due to lithium intercalation, when charging, leads to a macroscopic expansion of the cell. State of the art rigid battery module bracing causes a periodic pressure build-up over a full charge/discharge cycle and therefore a compression of the battery separator. Furthermore, this results in a reduced diffusivity of the lithium-ions, which can cause lithium plating. Lithium plating is considered as the main cause of (premature) battery aging. In our paper, we present for the first time the investigation of a flexible spring-loaded cell bracing on cell aging by maintaining a nearly constant pressure. In comparison with the rigid bracing, a different aging speed can be observed in favour of the flexible bracing method.
KW - capacity fading
KW - lithium-ion battery
KW - mechanical stress
KW - premature aging
UR - http://www.scopus.com/inward/record.url?scp=85021358684&partnerID=8YFLogxK
U2 - 10.1109/EVER.2017.7935871
DO - 10.1109/EVER.2017.7935871
M3 - Conference contribution
AN - SCOPUS:85021358684
T3 - 2017 12th International Conference on Ecological Vehicles and Renewable Energies, EVER 2017
BT - 2017 12th International Conference on Ecological Vehicles and Renewable Energies, EVER 2017
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 12th International Conference on Ecological Vehicles and Renewable Energies, EVER 2017
Y2 - 11 April 2017 through 13 April 2017
ER -
