Evolution of U.S. Department of Energy Battery Performance Targets For Electrified Vehicles

摘要

The U.S. Department of Energy, Vehicle Technologies Office (U.S. DOE-VTO) is developing more energy- efficient and environmentally friendly highway transportation technologies that would enable the United States to burn less petroleum on the road. The VTO supports a variety of work to lower the cost and convenience of electrified vehicles by collaborating with national laboratories and industry to improve batteries and electric drive systems. System simulation is an accepted approach to evaluate the potential of advanced (future) battery technology targets from U.S. DOE-VTO. Vehicle system simulation models based on these targets have been generated in Autonomie, to reflect the different EPA classifications of vehicles for six different timeframes: 2010, 2015, 2020, 2025, 2030, and 2045 as part of the DOE-VTO Benefits and Scenario Analysis (BaSce). This paper will present an approach based on a large-scale simulation process where simulations are performed over standard regulatory driving cycles for the different EPA vehicle classifications over a range of timeframes by implementing the battery technology advancement targets set by the U.S. DOE-VTO. All the vehicles are sized with equal constraints to ensure the impact of technology targets solely. The goal of the analysis is to provide key figures and trends related to battery; one of the key components in electrified vehicles (xEVs). The main dimensions of interest include, but are not limited to: power requirements, energy requirements, weight and cost. The paper will evaluate at how these dimensions look over time, across vehicle platforms and different powertrain options. The paper will further provide analysis of the different battery trend lines observed in electrified vehicles in the market.