Dr. Anna Stefanopoulou to give plenary talk at DSCC 2020 (Oct 5, 10am)

Dynamic Systems & Control Conference (DSCC)

DSCC Plenary Talk

Plenary 1: October 5th – 10:00AM

Speaker: Dr. Anna Stefanopoulou

William Clay Ford Professor of Technology
Department of Mechanical Engineering
University of Michigan

Title: The price of battery degradation and the value of battery health estimation in the transition to electrified transportation

Abstract: Replacing a gasoline or diesel internal combustion engine vehicle (ICEV) with an electric vehicle (EV) will zero out the tailpipe emissions and depending on where it charges can have 50% lower green-house gas emissions. Key barrier to EV adoption is the higher up-front cost of EVs compared to ICEVs. Using transit buses, we will show how the total cost of ownership depends on the lower operating cost due to fuel and maintenance savings that depend on the route, utilization, and charging of the vehicle. If the battery stays healthy, vehicle to building, vehicle to grid, and other 2nd life applications can provide additional value streams and be considered as a long-horizon optimization problem.

The battery state of health (SOH) is thus at the crux of the payback calculations and consequently can tip the EV adoption. Unfortunately, estimating the battery health with high confidence can only be done under certain discharge patterns. Identifying the physical origin of the degradation is even more difficult but very important, because it can inform the battery management system and hence prevent further degradation. We will present various on-board signals for tracking the intrinsic “aging wrinkles” in batteries. We will conclude by highlighting the estimation of gas venting and assess the intensity of thermal runaway for first-responders and post-accident management of damaged batteries. This presentation will be similar to the one presented in IEEE ECCE and ICCAS.