Energy Storage

Arvind Balachandran, PhD Student, Division of Vehicular Systems reads oscilloscope
Karl Öfverström

Energy storage is about designing and optimizing systems to make the best use of batteries and fuel cells. Our research aims to design energy storage systems that make optimal use of batteries or fuel cells in a safe way.

Electrification of vehicles is an important part of the transition to a carbon dioxide-neutral and sustainable society. The biggest obstacle to a rapid transition is developing suitable energy storage systems for the transport sector. Battery and fuel cell systems are used today but both technologies have the potential to improve and become more competitive options.

Some characteristics that are valued are environmental friendliness from a life cycle perspective, high energy density, fast charging capability, long life, manufacturing price and safety.

Research for safe and optimal energy storage

Our research aims to design energy storage systems that make optimal use of batteries or fuel cells in a safe way. This includes;

  • electrical construction of, for example, battery packs.
  • dimensioning of electrical components in a powertrain to optimize energy losses and manufacturing costs.
  • optimal management of battery usage to reduce energy losses and increase lifetime as well as estimate lifetime and monitor battery systems for safe robust operation.

Our research environment

The division of Vehicle Systems have a self-developed battery rig with an associated battery management system. There, control strategies can be tested and measurement data collected. Methodologically, physics-based and data-driven modelling, simulation, control and optimization are used.

Collaborative partners

The research is often conducted together with Swedish industry and financiers such as Scania CV AB, Atlas Copco, Northvolt, Alelion and Swedish Electromobility Center.

Key References Show/Hide content

  • A. Balachandran, T. Jonsson, L. Eriksson and A. Larsson, "Experimental Evaluation of Battery Impedance and Submodule Loss Distribution for Battery Integrated Modular Multilevel Converters”, The 24th European Conference on Power Electronics and Applications (EPE’22 ECCE Europe), 2022, Retrieved fromhttp://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-187242

  • A. Balachandran, T. Jonsson and L. Eriksson, "Design and Analysis of Battery-Integrated Modular Multilevel Converters for Automotive Powertrain Applications”, 23rd European Conference on Power Electronics and Applications (EPE21 ECCE Europe), Sep 06-10, 2021, doi: https://doi.org/10.23919/EPE21ECCEEurope50061.2021.9570570
  • S. Voronov, M. Krysander, and E. Frisk, "Predictive Maintenance of Lead-Acid Batteries with Sparse Vehicle Operational Data" International Journal of Prognostics and Health Management, 11(1), 2020, doi: https://doi.org/10.36001/ijphm.2020.v11i1.2608

  • P. Polverino, E. Frisk, D. Jung, M. Krysander and C. Pianese, "Model-based diagnosis through Structural Analysis and Causal Computation for Automotive Polymer Electrolyte Membrane Fuel Cell Systems”, Journal of Power Sources, Vol. 357, pp. 26–40, 2017, doi: https://doi.org/10.1016/j.jpowsour.2017.04.089

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