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Nordbatt2019

Battery State-of-Health Estimation in Electric Vehicles

  • 26th July 201923rd August 2019
  • by Schaltz Erik

Presenter: Ass. Prof. Dr. Erik Schaltz
Title: Battery State-of-Health Estimation in Electric Vehicles
Affiliation: Department of Energy Technology at Aalborg University

Abstract

The State-of-Health (SoH) of an electric vehicle (EV) battery is an important key performance indicator for the EV second-hand market as the battery is one of the most expensive components inside the EV. The Incremental Capacity Analysis (ICA) method is a promising tool to estimate the battery SoH. However, the method has mainly been demonstrated on a cell level in controlled laboratory environments. If the method should be practically feasible, should it also be applicable on pack or EV level. The main objective of this work is to demonstrate the feasibility of the ICA method on pack and EV level. A BMWi3 EV based on Nickel-Manganese-Cobalt (NMC) battery cells is used as a case. Results obtained both on cell and EV level indicates the feasibility of the ICA method to be applicable on EV level also.

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