Impact Evaluation of Driving Style on Electric Vehicle Battery based on Field Testing Result

Ka-Seng Chou, Davide Aguiari, Rita Tse, Su-Kit Tang, Giovanni Pau

Abstract: Monitoring electric vehicles' battery status and forecasting their state of health is still an open challenge. To determine how and why a battery degrades over time, we have extensively monitored a Nissan Leaf's battery pack for more than one year. Collecting more than 4.5 million samples via a custom monitoring connected device to investigate how different driving behaviors affect battery aging. In addition, the best driving behaviors based on the battery's optimal temperature are revealed, including speed, acceleration and brake pedal pressure, and horsepower.