Active Balancing of State of Health in Battery Systems

Active Balancing of State of Health in Battery Systems

Presenter: Gunnar Rohde
Title:
Active Balancing of State of Health in Battery Systems
Affiliation: Nerve Smart Systems

Abstract

Unbalanced single cells in a battery system may severely affect its usable capacity, operational safety and expected lifetime. For this reason, battery management systems usually take care of a sufficient monitoring as well as balancing of the state of charge of individual cells within a battery system. Whether active or passive, the majority of cell balancing methods known today show a decisive disadvantage: they make the battery system either less efficient or more complex – which in both cases leads to significantly increased total cost of ownership.

In this talk, a novel approach to battery management systems is presented; in addition to the mere single cell monitoring, the so-called Nerve Switch® technology offers the possibility of a predictive control of individual battery cells. Such a single cell control enables an active and continuous balancing even of the state of health of the individual cells during operation of a battery system. Given the fact that an inhomogeneous state of health between single battery cells often is the cause for imbalances in their state of charge, the Nerve Switch® technology provides a more efficient and less complex method to prevent unbalanced battery cells.

Full conference program

Gunnar Rohde
Gunnar Rohde
Dr. Gunnar Rohde (1981) is Lead Scientist at Nerve Smart Systems ApS and responsible for research and development of the Nerve Switch® technology. Gunnar is an educated mathematical physicist and his main research interest are smart cyber-physical energy systems. He has several years of experience within both academia and industry in the field of mathematical modelling and electrochemical energy technology.