Evaluation Method of Battery State of Aging Based on Polarization Voltage: Presented at EVS 31 EVTeC 2018, Kobe, Japan, October 1 - 3, 2018

摘要

The battery aging is an important parameter to evaluate the battery performance. The polarization voltage of the battery is also changed with the increase of the battery aging. So, this paper redefined the Battery State of Aging (BSA) by the polarization voltage to evaluate the battery aging, and through a simple curve fitting method, get a more accurate BSA prediction results. The traditional State of Health (SOH) is predicted by the polarization voltage in the discharge state and obtained a more accurate estimation.