Modeling Failure and Short Circuit of Lithium-ion Batteries Under Mechanical Abusive Loads

Lithium-ion batteries are the state of practice energy storage unit for electric vehicles. The application of these batteries in transportation subjects them to higher mechanical loads than what have not been prevalent in customary consumer electronics uses. Overloading of these batteries can cause internal short circuit that may in turn result in excessive and out of control thermal reactions. To protect these batteries in cases of abusive mechanical loads such as car accidents without over designing the structure, proper understanding of deformation and failure of the batteries and including them in full vehicle simulations is required. In this presentation, development of a universal material and failure model will be discussed. A validation of SAHRAEI failure criteria programmed in Radioss will be presented for an 18650 lithium-ion cell.

Presentation by Dr. Elham Sahraei, Assoc. Prof., Dir. of Electric Vehicle Safety Lab at Temple University.