Off-campus WSU users: To download campus access dissertations, please use the following link to log into our proxy server with your WSU access ID and password, then click the "Off-campus Download" button below.

Non-WSU users: Please talk to your librarian about requesting this dissertation through interlibrary loan.

Access Type

WSU Access

Date of Award

January 2022

Degree Type


Degree Name



Mechanical Engineering

First Advisor

Ming-Chia Lai

Second Advisor

Y. Gene Liao


Lithium-ion battery currently is the most popular choice for the onboard energy storage device for electrified light-duty vehicles. Among all commercially available lithium-ion battery types, LiNiMnCoO2 (NMC) is chosen by many automobile manufacturers due to its high specific capacity, high volumetric capacity, high average voltage, and long cycle life. In this dissertation, a 20Ah pouch-type NMC battery cell is tested under different operating conditions considering effects of charging/discharging C-rate, ambient temperature, battery aging, and battery internal short-circuit. Using the experimental data, four types of battery cell models with high fidelity are developed, including equivalent electric circuit, electro-thermal, electrochemical, and NTGK models. Battery cell-level models are also extended to module/pack-level with some battery management system (BMS) features. Finally, battery models are integrated into models of electrified light-duty vehicles to perform investigations on vehicle electrification and hybridization ranging from micro-hybrid, 48V mild-hybrid, full hybrid, and pure electric. The result of this dissertation can be used for designing the layout of battery module/pack and BMS and testing of hybrid and electric vehicle powertrain control algorithm.

Off-campus Download