Identification of Pulse Current of EV Batteries in Needle Penetration Test

Abstract

In this study, the electromagnetic inverse analysis method is developed to identify the short circuit current in a lithium-ion battery nailing test. The method measures the non-stationary magnetic flux density generated by the current and identifies the current inside the battery. The analysis is considered in the frequency domain with the analytical solution of the electric dipole model. The numerical verification was performed, in order to show the basic concept of the method.