An Experimental and Numerical Study on Charged 21700 Lithium-Ion Battery Cells under Dynamic and High Mechanical Loads

The need for higher capacity battery cells has increased significantly during the past years. Therefore, subject of this study is to investigate behavior high performance 21700 Lithium-Ion cylindric under several abuse conditions, represented by mechanical loads with different velocities and states charge (SoC), develop a finite element analysis (FEA) model, using OpenRadioss’ explicit solver capabilities. present focused on investigation these loading charge. aim provide tool predict point an internal short circuit in FEA, very good approximation. Experiments were completed hydraulic flat-compression test, set up at four charge, 40%, 60%, 80% 100%, three 10 mms?1, 100 mms?1 1000 mms?1. A homogenized FEA model developed damage separator, which can lead possible thermal runaway abusive load conditions. combination well identified material fracture parameters, succeeded prediction various conditions; it also be used further crashworthiness within full-car model. This accurate cell will first building block optimize protective structures batteries electric vehicles, reduce their weight through deeper understanding overall crash cases.