The Smart Battery Cell

The purpose of applying smart functionalities at material- and celllevel is to achieve longer life, better SOH and RUL predictions, more reliable aging models, safer systems, etc. BASE provide profound documented academic knowledge about battery interfaces, how to functionalize separators to improve battery cell function, liquid, polymer and ceramic electrolyte function and design, and knowledge on how to characterize battery cell functionalities. By including selfhealing cell chemistries and/or sensors into the material within the battery cell and study how detailed reactions in the cell can be monitored, new insights can be gained and the SOH of a battery cell in a battery pack can monitored in detail, which is expected to result in more reliable performance, including safety.

We aim to target this with both theoretical and experimental tools. New innovations can be foreseen since this is a new field of study for the world battery community. Insplorion will be instrumental in the attempts to improve the resolution of the sensing capabilities within the battery cell. As a first step, this will be used for in situ/operando characterization during development to engineer cells, batteries and BMS functions with better precision than today. In following steps, the possibility to incorporate sensors into cells intended for field application without compromising performance and reliability of the battery system will be explored. Northvolt and SAFT, together with ABB and the automotive companies, will guide the work based on the needs from end-users. The possibility to manufacture the “smart chemistry functionalities” and to incorporate sensors into battery cells is practically unexplored. Stena Metal and SAFT will advise on the recyclability of cells based on these new ideas and concepts. Models for the response from each battery cell must be refined (Comsol), and how this will influence performance at pack-level will constitute the core of these activities. This theme will identify and develop how new inexpensive anode, cathode and electrolyte materials from Theme 1 can be stabilised through the introduction of protective films, electrolyte and self-healing additives, etc.