Experimental Validation of Electromagnetic Models for a Simple Multi-Cell, Multi-Module Battery

Simulations and measurements are compared for a small and simple battery assembly that has been specifically developed in order to make the simulation and experimental validation of electromagnetic models of such systems more practicable. The architecture of the simplified battery assembly is representative of typical automotive traction batteries, but is much simpler, more compact and develops a much lower voltage, thereby enabling both measurements and simulations to be carried out more readily. The parameters investigated for this system include the radiofrequency impedances of each of the modules and of the assembled battery system, as well as the coupling between the battery terminals and a simple cable network within the battery assembly. The results obtained, for frequencies from 100 kHz to 200 MHz, show reasonable agreement and give confidence in the effectiveness of the approximation strategies that have been investigated.