Roads to the Future summarized current e-mobility research
Friday, June 30, 2017
Swedish Electromobility Centre’s annual conference focused on the e-mobility knowledge and expertise that we have today. Invitied speaker Anna Stefanopoulou opened the conference with a talk about model-based methods for Battery Management Systems. “Battery management is like raising kids”, she said.
The conference took place at Stockholm University, and presented research in various areas, all joined by their relevance to e-mobility. The topics ranged from overall questions about the general state of research and development, to more in-depth technical issues.
“Batteries are like humans – push them too hard and they will explode. Work them too hard or don’t push them enough – both cases are worse for their performance. It has to be just right. It’s just like raising kids”, said Anna Stefanopoulou in her speech “Models for mastering the mysterious world of ions in electro-mobility”. Anna Stefanopoulou is director of Automotive Research Centre at University of Michigan, and described among other things how the researchers work with neutron imagery to study swelling in lithium batteries. She concluded by emphasizing that models and data should be integrated in order to push the limits for Battery Management Systems.
In the field of system studies and methods, Jonas Fredriksson, Chalmers, showed how e-mobility together with active control is an opportunity for long, heavy vehicle combinations. Lars Eriksson, Linköping University, continued in the same area with a lecture on the theme “Model Based Development Towards Electromobility – The Prosperous Life, Evolution, and Impact of an Engine Model”.
Key note speaker Elena Lomonova from Eindhoven Technical University (TU/e) was the next key note speaker of the day. The subject of her lecture was the work on electric traction systems for e-mobility that is conducted in the electro-mechanics and power electronics research group at TU/e.
In the field of electric machines and drives, Francisco Marquéz-Fernández from Lund University spoke of electric roads as a future possibility, and said that a comparison between fuel cells and electric roads is planned in his research project. He was followed by Oskar Wallmark, KTH, who described the research conducted at KTH on compact integrated electric drives for automotive applications.
Energy storage was the theme of the afternoon presentations, where Torsten Wik, Chalmers, gave a lecture on adaptive modeling as a necessity for successful battery management. Jens Groot, AB Volvo, then gave an overview of the stat-of-the-art and research situation in Sweden regarding aging of lithium ion batteries.
“The cycle life issue could have been solved if we had focused on lifetime rather than performance, safety and cost – but would you prefer that?” he asked.
Annika Ahlberg-Tidblad from Scania addressed standards and regulations for batteries.
“Standards must be relevant, representative, reliable, fair and traceable,” she pointed out. “An inappropriate standard can be more detrimental than no standard at all.”
Anders Grauers, Chalmers, concluded the day by giving a picture of the current situation.
“E-mobility is in a breakthrough, but some issues stand in the way of a full introduction,” he said. “The discussion itself is important because it allows us to compare different solutions as the development goes on. Perhaps we will find even better solutions along the way?”
Text & photo: Emilia Lundgren