Lithium-Ion Battery Cell Cycling and Usage Analysis in a Heavy-Duty Truck Field Study

Energies

Pontus Svens¹  Mårten Behm²  Göran Lindbergh² 

[1] Scania CV AB, SE-151 87 Södertälje, Sweden;Department of Chemical Engineering and Technology, Applied Electrochemistry, School of Chemical Science and Engineering, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden; E-Mails:

关键词: hybrid electric vehicle;    HEV;    lithium-ion battery;    dV/dQ;    Electrochemical Impedance Spectroscopy (EIS);   

DOI  :  10.3390/en8054513

来源: mdpi

【 摘 要 】

This paper presents results from a field test performed on commercial power-optimized lithium-ion battery cells cycled on three heavy-duty trucks. The goal with this study was to age battery cells in a hybrid electric vehicle (HEV) environment and find suitable methods for identifying cell ageing. The battery cells were cycled on in-house developed equipment intended for testing on conventional vehicles by emulating an HEV environment. A hybrid strategy that allows battery usage to vary within certain limits depending on driving patterns was used. This concept allows unobtrusive and low-cost testing of battery cells under realistic conditions. Each truck was equipped with one cell cycling equipment and two battery cells. One cell per vehicle was cycled during the test period while a reference cell on each vehicle experienced the same environmental conditions without being cycled. Differential voltage analysis and electrochemical impedance spectroscopy were used to identify ageing of the tested battery cells. Analysis of driving patterns and battery usage was performed from collected vehicle data and battery cell data.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.