Abstract:

In this work, the authors designed and built a battery, electric vehicle (EV), and driver system loop model to study the key performance parameters of lithium–sulfur battery (LSB) operation in EVs. The tested data from the lab were introduced into the model, followed by simulating driving cycles and fast charging. A comparison with the lithium-ion batteries used in real vehicles verified the high reliability of the model. Meanwhile, the simulation results showed that the LSB needs more improvements for EV application; in particular, developments are still highly needed to overcome the high power and energy loss and sharp voltage vibration for practical applications. The novelty of this work relies on the created closed-loop modeling method to simulate lab research results for evaluating new battery technology in scaled-up EV applications in order to not only vividly predict EV operation performance and commercialization feasibility but also thoughtfully guide researchers and developers for further optimization and problem solutions. Therefore, this method holds great promise as a powerful tool for lab research and the industrial development of new batteries for EV applications.