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An energy management system to improve electric vehicle range and performance

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2 Author(s)
J. W. Pavlat ; Amerigon Inc., Burbank, CA, USA ; R. W. Diller

An electric vehicle (EV) energy management system (EMS) developed to accurately predict and extend the usable driving range and the life of the battery pack is discussed. The EMS monitors and records battery state of charge, vehicle performance, power consumption of key components, and driver's actions. Convenient drive inputs in conjunction with memorized energy consumption profiles allow accurate prediction of driving range and selection of appropriate recharging profiles. EV range extension is accomplished by identifying inefficient use of energy, resulting in EMS modification of energy usage by offending subsystems or EMS suggestion to the driver of improved driving habits or vehicle use. Factors affecting the accuracy of range prediction and the amount of range extension are described.<>

Published in:

IEEE Aerospace and Electronic Systems Magazine  (Volume:8 ,  Issue: 6 )