Jerusalem College of Technology, Israel
Battery Swapping, Electric Vehicle, Exchangeable Item Repair System, Window Fill Rate, Spare Allocation Problem.
Knowledge Discovery and Information Retrieval
Methodologies and Technologies
Electric vehicle battery swapping stations are suggested as an alternative to vehicle owners recharging their batteries themselves. To maximize the network's performance spare batteries must be optimally allocated in these stations. In this paper, we consider the battery allocation problem where the criterion for optimality is the window fill rate, i.e., the probability that a customer that enters the swapping station will exit it within a certain time window. This time is set as the customer's tolerable wait in the swapping station. In our derivation of the window fill rate formulae, we differ from previous research in that we assume that the swapping time itself is not negligible. We numerically analyse the battery allocation problem for a hypothetical countrywide application in Israel and demonstrate the importance of estimating correctly customers' tolerable wait, the value of reducing battery swapping time and the unique features of the optimal battery allocation.