Proceedings of the
The 33rd European Safety and Reliability Conference (ESREL 2023)
3 – 8 September 2023, Southampton, UK
Accelerated Life Cycle Analysis of Lithium-Ion-Batteries under Different Fastcharging Algorithms
1Electric Vehicle Institute, University of Applied Sciences Bochum, Germany.
2Esslingen University, Germany.
3Chair of Electric Mobility and Energy Storage Systems, University of Wuppertal, Germany.
ABSTRACT
Fast-charging is a relevant technical procedure required to further promote user acceptability of electric vehicles (EV), as well as the further decarbonization of mobility, as it allows to reduce charging times and range anxiety. However, fast-charging promotes accelerated battery aging and therefore limits the usability of the battery due to the reduction in lifetime. Based on this challenge, this research focuses on the analysis of different fast-charging algorithms to overcome the challenges of accelerated aging under fast-charging applications. Therefore, the classic boost-charging (BC) algorithm is compared against the standard constant current - constant voltage (CC-CV) algorithm and two anode potential based (APB) algorithms within the same testing framework. The results show that the maximum charging current used has a significant influence on the cycle life of the lithium-ion-batteries (LIBs) and all tested algorithms could not be performed to their full extent over the life-cycle-analysis (LCA) of the batteries. This was caused by safety relevant parameters, such as the end-of-charge (EOC) voltage that must not be overcome in order to operate the cell within the specified limits of the manufacturer.
Keywords: Fast-charging, Lithium-ion-battery, Electric vehicle, Boost-charging, Life cycle analysis.
