17. June 2015

New Springer publication: E-Mobility in Europe – Trends and Good Practice

Focusing on technical, policy and social/societal practices and innovations for electrified...

17. March 2015

One step at a time: A complexity perspective for the next generation of EV policy

A Dutch team of E-Mobility NSR colleagues produced a compact draft in which recent developments of...

17. February 2015

New book: Global perspectives on EV Business Models

E-Mobility NSR project team members, Dr Richard Kotter and Prof Ghanim Putrus, Northumbria...

New Northumbria paper: The Effect of Cycling on the State of Health of the Electric Vehicle Battery

13. November 2013

Four E-Mobility NSR colleagues at Northumbria University - Gilian Lacey, Ghanim Putrus, Tianxiang Jiang and Richard Kotter - recently published a new paper on the effect of cycling on EV batteries. Their paper provides an analysis of the experimental results available for lithium ion battery degradation which has been used to create a model of the effect of the identified parameters on the ageing of an EV battery.
The parameters affecting degradation are generally accepted to be the following: 1) state of charge; 2) depth of discharge; 3) charging rate and 4) battery temperature. Values for each of these parameters have been found for three versions of a typical daily cycling scenario: a) uncontrolled charging; b) delayed charging and c) Vehicle to Grid. A comparison is made of the expected overall degradation using four different charging rates and different charging patterns based on the model. 
Finally, a link is made between the charging patterns and the effect on the power flow at the transformer of a typical section of LV network using a ADMD profile. Download the full paper in the E-mobility NSR info pool.