Abstract: A method for operating a fuel cell vehicle includes predictive determining of the anticipated running resistances on an upcoming stretch of road, detecting of parameters determining the performance capacity of a fuel cell device and a battery, determining of a velocity Vsoll which can be maintained uniformly over the upcoming stretch of road with the anticipated running resistances, and limiting of the power provided by the fuel cell vehicle to the value required in order to achieve the velocity Vsoll.

Abstract: At least one vehicle and at least one key element, each associated with a corresponding vehicle, are configured to exchange data with one another via a system that determines the vehicle position and the position of the key element. The system places the vehicle in a driving operating mode when the vehicle position and the key element position are essentially the same, in particular when the key element is located inside the vehicle. At least one vehicle function that can be activated when the vehicle is stationary is automatically switched on depending on a current key element position. This may occur when a key element position is changing relative to the vehicle position, but the vehicle and the associated key element are remote from one another, such as separated by at least ten meters.

Abstract: A fuel cell device with a fuel tank which has a fuel supply line which is branched into fuel portion supply lines, having a plurality of fuel cell stacks which stacks each have, on the anode inlet side, a fuel connection which is respectively fluidically connected to one of the fuel portion supply lines. Exclusively one of the fuel cell stacks is connected on the anode outlet side to a fuel recirculation line. The flow guidance of the fuel recirculation line is selected in such a way that the fuel can be returned exclusively into the fuel cell stack connected to the fuel recirculation line. Furthermore, a method for operating the fuel cell device is provided.

Abstract: An apparatus for splitting the power of fuel cell systems in a vehicle comprises: a first fuel cell system and at least one further fuel cell system, which are configured to convert hydrogen and oxygen into water in order to generate electrical energy therefrom, and a controller unit, which is configured to actuate the first fuel cell system and the further fuel cell system with an electrical signal. The apparatus is configured to actuate the first fuel cell system and the further fuel cell system with the electrical signal in time offset fashion.

Abstract: At least one vehicle and at least one key element, each associated with a corresponding vehicle, are configured to exchange data with one another via a system that determines the vehicle position and the position of the key element. The system places the vehicle in a driving operating mode when the vehicle position and the key element position are essentially the same, in particular when the key element is located inside the vehicle. At least one vehicle function that can be activated when the vehicle is stationary is automatically switched on depending on a current key element position. This may occur when a key element position is changing relative to the vehicle position, but the vehicle and the associated key element are remote from one another, such as separated by at least ten meters.