I01�High-voltage�Components
11.�Cooling�the�Electrical�Machine
Components
162
Due�to�the�high�efficiency�considerably�less�heat�is�emitted�from�the�electrical�machines�and�the
power�electronics�than�from�combustion�engines.�Nevertheless,�in�order�to�ensure�fault-free�operation
at�all�temperature�conditions,�a�cooling�system�for�cooling�the�electric�motor�components�is�necessary
in�the�I01.�To�provide�a�complete�overview�the�cooling�system�is�shown�below�with�the�maximum
equipment.�For�vehicles�with�less�equipment,�e.g.�no�range�extender�or�no�convenience�charging
electronics,�the�scope�of�the�components�of�the�cooling�system�is�reduced.
All�circuits�are�colored�for�better�representation.�The�blue�colors�should�indicate�a�lower�temperature.
The�red�colors�indicate�a�high�temperature�of�the�coolant.�The�different�red�colors�highlight�the
different�high�temperatures.
