Journal of Korean Society of Transportation ISSN:1229-1366(Print) 2234-4217(Online) 대한교통학회지

Electric vehicles are valuable not only from an environmental perspective, but also from a flexible power source perspective. In order to fully utilize electric vehicles of these values, large-scale distribution must occur, and for this to happen, sufficient charging infrastructure must be built. In order to select the location of a charging station from the user’s perspective and accurately predict its potential, it is necessary to understand and reflect the actual situation. In this study, we conducted a survey of electric vehicle users and analyzed electric vehicle operation and charging data, and the survey results were compared and supplemented by analyzing real-time electric vehicle operation data. The average monthly driving distance of passenger electric vehicles had increased by more than 30% compared to that of conventional vehicles, the number of charging times was about four times the number of refueling, and the average driving distance per charge is about 200km. The number of users who had not driven long distances for the last year using electric vehicles also reached the 20% range. At the start of charge, the battery state of charge was uniformly distributed in the 10-90% range, but the final state of charge was concentrated in the 80-100% range. Overall, there was a tendency to keep the battery state of charge high. As a result of analyzing charging events after driving, the pattern of ‘charging’ - ‘ultra-short distance driving of 10km’ - ‘charging’ - ‘long distance driving of more than 80km' was observed with a frequency of 1 to 2 times for one month. That was corresponding to 30% of the users. It was understood that the behavior of driving and charging an electric vehicle is inherently influenced by psychological factors such as ‘range anxiety’. Building infrastructure that can address these psychological factors is key to the continued distribution of electric vehicles.