An examination of the performance and safety of the lithium-ion battery system.

摘要

Electrode instability and its effect on the lithium-ion battery is a significant safety concern. It is necessary to understand the contributing effects of cell heating because this leads to electrode degradation and ultimately to thermal runaway. This problem is very real, and it is crucial to obtain a fundamental comprehension of how the design characteristics of the lithium-ion cell affect this safety phenomenon.; In the examination of this problem, a thorough characterization of commercially available lithium-ion cells was performed to examine the differences between cells produced by different manufacturers. However, the main task of this dissertation was addressed when a first-principles mathematical model was used to examine the characteristics of the lithium-ion battery system that are most critical to thermal runaway. The result of this work has provided a significant first step toward understanding the fundamental behavior of thermal runaway in the lithium-ion battery system. Furthermore, the work has produced an invaluable engineering tool, which may be used by battery design engineers and scientists.