Calendar and cycling ageing combination of batteries in electric vehicles

Eduardo Redondo-Iglesias (1, 2) , Pascal Venet (3, 2) , Serge Pelissier (1, 2)

1 IFSTTAR/AME/LTE - Laboratoire Transports et Environnement
2 GEST - Gestion de l’Energie et Stockage pour les Transports
3 MIS - Ampère, Département Méthodes pour l'Ingénierie des Systèmes

The battery is the most sensitive part in the powertrain of full electric vehicles because of its cost and weight. The full electric vehicle range and prize are highly determined by the battery performances. During its lifespan, the battery performances are degraded because of ageing mechanisms. Typically, there are two types of ageing: calendar and cycling ageing. In the electric vehicle application, both types of ageing coexist and interact. In this paper, we report the results of accelerated ageing tests and present a methodology to separate calendar from cycling ageing. With this analysis method, we demonstrate the interaction between calendar and cycling ageing when battery is cycled following representative current profiles of the electric vehicle application.

Mots clés: CYCLING AGEING; LITHIUM-ION BATTERY; CALENDAR AGEING; ACCELERATED AGEING TESTS

Mots clés: VIEILLISSEMENT; BATTERIE; VEHICULE ELECTRIQUE; LITHIUM; VEHICULE

Domaines: Sciences de l'ingénieur [physics]

Eduardo Redondo-Iglesias, Pascal Venet, Serge Pelissier. Calendar and cycling ageing combination of batteries in electric vehicles. ESREF, Oct 2018, Aalborg, Denmark. ⟨hal-01902030⟩