Background and Motivation

Lithium-ion batteries (LIBs) are increasingly used in electric vehicles and aerospace systems, where they may be exposed to extreme mechanical impacts such as collisions or ballistic events. These high-speed impacts can induce severe mechanical-electrochemical damage within very short time scales, significantly increasing the risk of electrolyte leakage and thermal runaway.

Most existing studies focus on quasi-static or low-speed impacts and do not adequately capture the coupled effects of impact energy and strain-rate under extreme conditions. This limits the establishment of reliable failure thresholds and impact-resistant battery designs.

Motivated by these challenges, this work investigates the failure modes and failure energy thresholds of LIBs under extreme impact conditions, aiming to establish strain-rate and energy-dependent failure boundaries and provide design-oriented insights for improving battery structural safety.

Source: Yunfei Deng, Han Zheng, Xianglin Huang*, Failure Modes and Failure Energy Threshold of Lithium-ion Batteries under Extreme Impact, Journal of Energy Storge