Patent ID: 11929527
Assignee: MAHLE INTERNATIONAL GMBH
Field: Chemical engineering (Chemistry)
Classification: CPC H  B  F  Y | IPC B  F  H

Claim 16:
17. The fuel cell device according to claim 1, wherein:
the heat exchanger or the evaporative cooler is operated at an ambient temperature of greater than or equal to 5° C.; or
the heat exchanger or the evaporative cooler is operated at a coolant temperature from the fuel cell of greater than or equal to 60° C.; or
operation of the heat exchanger or of the evaporative cooler is controlled or regulated via a switch-on characteristic, wherein a degree of switch-on ZVerd is based on a quantity of heat QFC of the fuel cell and an ambient temperature TAmb in ° C. of the fuel cell device approximately according to the following equation:

ZVerd≈f(QFC/Qmax*55° C./(75° C.−TAmb))

where f(x)≈0 for x<0.5; or
operation of the heat exchanger or of the evaporative cooler is regulated, wherein a regulation takes place via a demand map with or without taking into account a thermal inertia of the fuel cell device; or
operation of the heat exchanger or of the evaporative cooler is regulated, wherein a regulation takes place based on the ambient temperature of the fuel cell device or the ambient temperature of the fuel cell device and humidity or a coolant temperature; or
operation of the heat exchanger or of the evaporative cooler is regulated, wherein a regulation is at least one of controlled by a thermostatic valve and supported by activation of a fan; or
operation of the heat exchanger or of the evaporative cooler is regulated, wherein one or more of the following variables are included in a regulation: level of water in a reservoir, use of a retarder, air conditioning, state of charge and temperature of a battery, driving speed, total weight, terrain topology, and traffic situation.