Effects of Temperature on the parameters of the Electrochemical Impedance Spectroscopy for Lithium-Ion Batteries

Abstract The health status of lithium-ion batteries and the acquisition internal information for battery designs predictions are great significance. Electrochemical impedance spectroscopy (EIS) is a measurement method that has received more attention in research on batteries’ performance. In this paper, three kinds made different materials were studied to measure at temperatures. An equivalent circuit model (ECM) was established, effect temperature during data studied. Temperature considered an important parameter predicting states. result shows impedances -40°C hundreds times higher than those 75°C. diffusion transfer all increase with decrease temperature, but NMC LTO have tolerance high temperatures LFP. It concluded EIS combined significant state estimation performance evaluation.