Dynamic Optimization of Thermal Management and Cooling Plate Design for Battery Systems

Authors

Robert Wendland, Volkswagen AG, Braunschweig;
Pascal Padberg, TLK Energy GmbH, Aachen;
Dr. Wilhelm Tegethoff, TLK Thermo GmbH, Braunschweig;
Prof. Dr. Jürgen Köhler, Technical University Braunschweig, Braunschweig

Summary

In order to develop an optimal battery thermal management system (BTMS), numerous types of simulations, varying in modeling, detail and physics, have been widely established. In case of complex, high resolution models, only single simulations are taken into account for first drafts of the BTMS concept. Therefore, a model of lumped
masses is introduced for a quick evaluation of the BTMS's design regarding the effects on battery temperatures and power consumption. The cooling plate design is abstracted down to two parameters describing its geometry and topology, which are
numerically optimized using a SQP algorithm. The results show up to 71.5 % potential pumping energy reduction by adjusting the design and flow direction compared to the reference cooling plate. Furthermore, the model is used to solve an optimal control problem for energy-efficient operation of the battery.

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