查看文章

This study focuses on understanding the impact of electric vehicle (EV) charger reliability on driver experience. It uses real-world EV charging data to simulate the level of disruption that would’ve occurred to EV drivers had their successful charging sessions been unsuccessful. Additionally, it quantifies how many charging sessions were actually unsuccessful and qualifies how disruptive those unsuccessful charging sessions were to drivers. The study finds that EV charging sessions are not all equally important as the level of disruption associated with each simulated and actual unsuccessful charging session varies. In around 65% of charging sessions, a hypothetical charge failure results in very little disruption. In the remaining 35% of charging sessions, a hypothetical charge failure can force drivers to completely alter their habitual/planned charging behavior. Moreover, in around 3% of charging sessions, drivers were one unsuccessful charging session away from being stranded. 7% of all logged charging sessions were actually unsuccessful. Most of these unsuccessful charging sessions led to low levels of disruption but in 2 sessions, drivers ended up being stranded. Charging sessions linked to high levels of potential disruption are associated with long distance travel, low battery state of charge and lack of access to home charging. The findings in this paper can assist stakeholders to identify charging conditions and locations linked to high levels of disruption in order to have more nuanced charging reliability standards to better meet consumer charging needs.