Summary: More than 30% of US energy and 90% of oil consumption are used for roadway transportation. Hybridization and electrification of vehicles on roadways are considered as major strategies for reducing dependence on oil and greenhouse gas and meeting the aggressive fuel economy standards. Hybridization of conventional internal combustion engine vehicles with motors run on electricity from batteries can significantly improve fuel efficiency while electrocution allows switch of the fuel to electricity that could be domestic and cleaner. Batteries are critical components in hybridized and electrified vehicles to achieve their potential. The battery requirements are different in hybrid electric vehicle (HEVs), plug-in hybrid electric vehicles (PHEVs) and battery electric vehicle (BEV). Although significant progress has been made in the last decade especially for HEV batteries further improvement is cost, performance, durability, and safety of batteries are need particularly for PHEVs and BEVs. In this presentation, we will discuss the requirements of batteries for hybrid and electric vehicles and state of the art of batteries for these vehicles and where the battery technology is going. We will focus on the lithium ion battery technology.
Bio: After receiving his Ph.D. in mechanical engineering from UCLA in 1983 Ahmad Pesaran joined the National Renewable Energy Laboratory. Since 1995, he has been working on electric drive vehicles and their various energy storage technologies. As the Principal Engineer, he currently leads the energy storage group at NREL. He has co‐authored more than 100 papers and presentations on energy storage and electric drive vehicles. He leads NREL team working on high energy anode material synthesis, electrode coatings for improving safety and life of batteries, battery thermal analysis and testing, lithium ion threedimensional electrochemical‐thermal modeling, lithium ion safety modeling and evaluation, post‐vehicle battery second use, techno‐economic analysis of batteries for electric vehicles, and energy storage requirement analysis and simulation for electric drive vehicles. Ahmad is the coordinator the recently established Computer‐Aided Engineering for Electric Drive Vehicle Batteries activity for the U.S. Department Energy Storage Program. He is also an active member of the Electrochemical Energy Storage Technical Team (USCAR and DOE partnership) and several of its workgroups.
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