Date of Award
2025
Document Type
Thesis
Degree Name
Master of Science in Engineering (MSE)
Department
Mechanical Engineering
Committee Chair
Nicholas Ginga
Committee Member
George Nelson
Committee Member
Nathan Spulak
Research Advisor
Nicholas Ginga
Subject(s)
Lithium cells--Reliability, Multiscale modeling, Lithium ion batteries, Electric batteries, Energy storage
Abstract
Lithium batteries are an ever-expanding solution for energy storage; however, their internal chemistry is highly prone to combustion. Any severe mechanical failure can lead to this scenario, which is problematic as their use in electric vehicles increases. As such, finite element modeling efforts need to improve in order to properly define the failure mechanics of these batteries. Efforts have already been made to create an accurate model of the battery as a whole, but this generalized model does not capture the short-circuiting phenomena within the internal components. To solve this problem, a representative volume model that generates input data and simplifies the internal geometry for a global-local model is proposed. This allows the battery to be accurately modeled mechanically, is computationally inexpensive, and provides an insight into the failure of the exceedingly small internal components to pinpoint exactly when short circuiting occurs.
Recommended Citation
Knee, Wesley James, "Multiscale finite element analysis of cylindrical jellyroll based energy storage devices" (2025). Theses. 750.
https://louis.uah.edu/uah-theses/750
