| Abstract |
In almost all applications, lithium-ion batteries are used in combination with power electronics. Theoccurring high frequency ripple currents are typically reduced by using DC link capacitors. On theother hand, it is assumed that frequencies in the kHz range do not affect ageing of batteries because it is outside the frequency range of electrochemical processes, which would mean that the capacitorcould possibly also be reduced. However, still the number of investigations, especially based onautomotive batteries, is quite limited. This presentation will give an overview of published ageing tests that investigate the influence of ripple currents on battery ageing. Additionally, our own results from 18650 cells and automotive cells from the project SiCWell are presented, which show an impact of different ripple parameters on the lifetime of the cell. |
