Solution

Solution

The targets of the LiBAT battery pack are challenging, especially with respect to weight and power. To meet these challenges, the consortium combines state-of the art battery technology with a row of innovative approaches.

The light weight is realized through a high degree of integration with respect to thermal management and power converting functions. Central to this approach is the use of multi-level inverters for power conversion – making separate charger technology obsolete and allowing for a combined thermal management approach for both the cells and the power conversion. Here the project goes far beyond the state of the art. As a positive side effect, a high level of modularity is achieved through combined cell & power electronics modules, allowing for a flexible scaling of the battery size. Of course, any improvement of Li-Ion cell technology will translate at once into improvements of the LiBAT battery pack as well. The prototype will be based on currently available high-quality cells.

High power demands require a sophisticated design that is able to ensure a sufficient thermal management under challenging conditions while ensuring safety and longevity of the pack. The LiBAT design addresses these challenges with an immersed liquid thermal management approach using the high-tech fluid Novec, a dielectric liquid already in use in some high-performance applications and for cooling servers. The use of this liquid coolant allows to combine the thermal management of cells and power electronics and is the optimal solution with respect to weight given the power requirements.


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