3D model of a commercial 9V alkaline battery for EMC simulation

Abstract

The modeling of batteries for simulation is nowadays of increasing importance because their behavior and performance has significant influence on the operation of many modern systems, such as electric vehicles (EV), mobile devices, energy storage and many more. But batteries also play an important role in daily electromagnetic compatibility (EMC) testing and measurement tasks, namely if they are used for powering devices under test (DUT) or measurement equipment. In this paper, we demonstrate the impact of a commercial 9V block battery on the result of a bulk current injection (BCI) test when used to supply optical voltage probes attached to the DUT. To illustrate the battery’s impact by simulation, a 3D model of selfsame is developed based on its actual internal structure and applying state-of-the-art approaches for battery modeling and commercial 3D EM simulation software. The model is validated by comparison of measurement and simulation of DUT voltages and input current during an actual BCI test.