Abstract: The present invention relates to a method (100) for providing a storage capacity reserve in a traction battery (20) for an electrically driven motor vehicle (50), preferably commercial vehicle, for an upcoming downhill drive. The method (100) comprises detecting (S1) whether an electric charging operation of the traction battery (20) by means of an external charging source (60) is imminent, and determining (S2) one or more possible downhill routes (G1, G2) for an imminent downhill drive after the electric charging operation. The method (100) further comprises predicting (S3) one or more amounts of recuperated energy that will be recuperated by the motor vehicle (50) along each of the determined downhill routes (G1, G2), and determining (S4) a maximum battery state of charge of the traction battery (20) for the charging operation using the external charging source (60) as a function of the predicted amounts of recuperated energy.

Abstract: A description is given of a control device (100) for the longitudinal and/or transverse guidance of a vehicle (102), in particular a utility vehicle, in relation to at least one further vehicle (104) in a vehicle group (106). The control device (100) comprises a determination unit (108) for determining a vehicle air resistance, FL, and a further vehicle air resistance, wFL. The control device (100) furthermore comprises a control unit (110) for controlling a control variable in the vehicle group (106). The control device (100) furthermore comprises a storage unit (112) for storing the determined FL and wFL in association with the controlled control variable in a characteristic diagram. The control unit (110) varies the control variable. A computing unit (114) of the control device (100) calculates an optimizing control variable. The control unit (110) furthermore controls the control variable in accordance with the optimized control variable.

Abstract: A fuel cell system for a vehicle, comprising a fuel cell and a water collection device for collecting liquid water from exhaust gas of the fuel cell, comprising an exhaust gas cooler including a heat exchanger which cools the exhaust gas by transferring heat from the exhaust gas to a flow of a cooling medium and condenses water contained in the exhaust gas and comprising a water tank for storing the collected water, a cooling device for cooling the fuel cell comprising a cooler, and a water ejection device for ejecting and distributing water. The water tank may be pressurized. A control means may choose operating modes for the fuel cell system that comprise an operating mode for water collection and an operating mode for water ejection based on a power schedule that comprises a sequence of scheduled operating phases with varying power requirements for the fuel cell system.