Strategies to address battery degradation in electric vehicles
Date
2022
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
University of Delaware
Abstract
Lithium-ion batteries are a central part of the sustainable energy area as they continue to play a key role in powering the world. Many aspects of these batteries could be improved, including increasing cycle life, reducing the lifecycle cost, and creating safer cells. By taking a holistic view of battery degradation and investigating several aspects of the degradation mechanisms, we aim to increase the already widespread use of batteries in fulfilling sustainability goals. ☐ Three primary aspects of battery degradation are covered in this thesis. First, an in-depth study of cathode degradation was conducted using a dry electrode process. This electrode fabrication method has the potential to reduce the time and energy required to manufacture lithium-ion cells. Second, a novel approach using adaptive thermal control to maintain capacity balance across groups of cells was demonstrated with an experimental apparatus. Finally, a connected vehicle model was developed based on the University of Delaware Fuel Cell/Battery Hybrid Bus. Through simulations, it was shown that connected vehicle technology can reduce both battery degradation and energy consumption.
Description
Keywords
Battery degradation, Dry electrode, Electric vehicle, Lithium battery, Thermal control