Browse Publications Technical Papers 2019-01-0593
2019-04-02

A Thermal Electric Two-Way Coupled Battery Pack Model for an All Electric VW Motorsport Racer 2019-01-0593

This paper presents a thermal electric two-way coupled li-ion battery pack model for an all-electric VW motorsport racer. It starts from the hybrid pulse power characterization (HPPC) test data at different state of charge (SoC) and temperature levels. Such information is used for cell level battery equivalent circuit model (ECM) parameter identification. Multiple cell ECMs are connected in series to create a module ECM. Battery thermal performance of the module is simulated first by computational fluid dynamics (CFD) for the module. Then, a thermal reduced order model (ROM) is created out of the CFD solution. The thermal ROM is then two-way coupled with the battery module ECM to form a complete battery module model. Multiple module models are connected to create a battery pack model. The complete pack model is then exported into Simulink for validation and simulation. Such a battery pack model can finish a complete charge or discharge cycle simulation within a few minutes of simulation time.

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