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New study shows: EV batteries last much longer than expected
While diesel cars run and run, electric car batteries quickly break down and turn the expensive new car into a complete financial loss - statements like these can be found on social media repeatedly. P3 now analysed data from more than 7,000 electric cars, providing insights into real battery ageing.…
For this reason, the SoH definition does not include values such as the charging and discharging history, but only the capacity – which is relevant for electric cars from the customer’s point of view. There is a simple explanation for the rapid SoH loss in the initial phase: a so-called SEI layer (solid electrolyte interphase) forms on the anode (i.e. the negative terminal) in the battery cell during the first charging and discharging cycles. Too high a temperature (over 60 degrees is mentioned) is a “driving force for chemical reactions, which leads to accelerated degradation of the capacity.” However, the vehicle or battery management can also help here, as our technical deep dive into the VW Group’s PPE platform shows.
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