ABSTRACT
ABSTRACT: Thermal Impedance Spectroscopy (TIS) is a cost-effective and reliable method for identifying thermal battery parameters. However, the measurements are timeconsuming, requiring approximately one day for a single battery. In this paper, several methods for accelerating TIS measurements are investigated. Reducing the number of frequencies, the number of oscillations per frequency, and a separate identification of heat exchanged with environment shortens TIS measurements markedly. With an optimized TIS procedure that is based on an evaluation of not only alternating signals but also direct components, measurement time can be reduced from one day to less than five hours. A comparison of results from conventional and optimized TIS procedure shows that this can be achieved without a considerable loss in accuracy.
