Technical Paper
Electric Vehicle Cold Start Range Estimation through Battery-in-Loop Simulations within a Virtual Driving Environment
2020-04-14
2020-01-0453
Lithium-ion (Li-ion) batteries have become a research focus in the field of electric and hybrid electric vehicles, due to key advantages such as high specific energy, high energy density and low self-discharge rate in comparison with other battery technologies. Nevertheless, key issues involving safety, performance, cost, charging time and durability restrict mass market adoption of electric vehicles. Cold-temperature operation of Li-ion batteries is currently a subject of major research efforts. The effects of low temperature reduce the available energy of the battery and increase its internal impedance. Moreover, Li-ion batteries experience serious degradation mechanisms at low temperatures, strongly affecting performance, which poses difficulties for cold-climate countries. In this work, a battery-in-the-loop experiment has been set up to estimate and analyze Li-ion battery cold start ranges at temperatures down to -40 °C.
