Investigations of Mechanical Properties and Maximum Load Capacities under Abuse Testing of Lithium Ion Battery

Abstract

Lithium-ion batteries are crucial in driving the various technological applications’ innovation. In this regard, it is important to ensure the safety and reliability of LIBs as a matter of public concern. This paper explores the mechanical properties and abuse testing’s maximum load capacities, highlighting the testing’s abusive conditions. The focus is to deepen a broader understanding of the extreme mechanical load and the battery behavior responses. Based on the extensive abusive testing procedures, drop, impact, crush or penetration, and thermal runaway tests, the mechanical responses and failure modes of LIBs at the cell, module, and pack levels were analyzed. This work, is based on the drop and impact test, using solidworks simulation to establish the abuse testing impacts on battery mechanical and electrical properties. The model for conducting the tests was the 18650 lithium ion cell battery, subjected to the front, side and rear impact at various heights and velocities with reference safety standard AIS 156 and AIS 048. Mechanical properties and maximum load capacities’ correlation was described, illuminating the crucial failure mechanisms and feasible mitigation approaches. The derived insights from the abuse testing have a significance to the design, safety and reliability of the LIB-based energy storage systems to guide the future research and development in safer and robust battery use.