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

Xiao, Hongling; Kshatriya, Aditya; Wang, Xingshi; Ahrenholz, Benjamin; Folio, Stephane

doi:10.4271/2019-01-0593

Cited by 6 publications

(2 citation statements)

References 18 publications

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“…In terms of thermal derating, the HV battery could be another critical component. However, in [39], a HV battery for a motorsport application has been presented. The critical time constant of the thermal capacity from the HV battery is 2 h. Compared to this time constant, the test duration of 12.5 min is relatively short.…”

Section: A Real-time Co-simulationsmentioning

confidence: 99%

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Function Development With an Electric-Machine-in-the-Loop Setup: A Case Study

Etzold

Fahrbach

Klein

et al. 2019

IEEE Trans. Transp. Electrific.

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In order to reduce automotive development times and costs, particular development tasks are rescheduled to earlier program phases (frontloading) by applying hardware-in-the-loop (HiL) tests. However, there is a shortage of studies considering HiL tests for function developments considering the thermal behavior of electric drives. This article shall be a first step toward closing this gap. A real-time co-simulation of a battery electric vehicle and a driver model are developed and connected to an electric traction machine at a laboratory test bench. A thermal derating function is designed and calibrated at this test setup.In particular, linear derating functions with different gradients are implemented and tested for high load performances during a track race, and the trade-off between energy demand and the lap time is determined. Larger gradients of thermal derating functions lead to shorter lap times and higher energy demands. Thus, for this case study, an increase of the gradient of the thermal derating function by a factor of two results in a lap time improvement of 2.3% and a higher energy demand of 4.7%. The test results demonstrate how HiL setups offer a favorable testing scenario to calibrate thermal derating functions of electrified powertrains in early development phases.

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Section: A Real-time Co-simulationsmentioning

confidence: 99%

“…The critical time constant of the thermal capacity from the HV battery is 2 h. Compared to this time constant, the test duration of 12.5 min is relatively short. Hence, regarding thermal derating, the battery model is neglected in [39], as well as in the presented work.…”

Section: A Real-time Co-simulationsmentioning

confidence: 99%