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Audi e-tron GT prototype – Thermal management – drive

You need powerful thermal management for high and reproducible output. In the e-tron GT, there are two coolant circuits for the technical components operating on different temperature levels. The cooler one controls the temperature of the high-voltage battery and the warmer one serves the electric motors and power electronics. Plus, there’s a cold circuit and a heating circuit for the interior, which I suppose your race car doesn’t have. Prediction is important in our case, too, albeit on a different level. We use a special functional feature to ensure that the driver can charge the battery with utmost capacity during a trip. When the car travels a longer distance with active navigation, the e-tron route planner issues suggestions of where to charge the battery. About half an hour before the car arrives at the selected charging station, the thermal management system starts adjusting the temperature of the battery to precisely match its state of charge and the charging station’s capacity.

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