Audi Ag

Volkswagen Ag

Oliver Berger

Christian Lucas

Rune Staeck

Daniel Grundei

Oliver Kleppa

Jan-Christoph Albrecht

Jan-Philipp Brinkmeier

Carsten Wachsmuth

Christoph Erfurth

Marco Jähnisch

Frank Jürgen Engler

A humidification system for a fuel cell system is provided, comprising a feed line for supplying cathode gas which is to be or is humidified, to a heat exchanger, further comprising a liquid supply and an eddy generator, located upstream of the liquid supply, for generating eddies in the flowing cathode gas. A fuel cell system comprising a humidification system is also provided.

Humidification system, and fuel cell system comprising a humidification system

A humidifier has a plurality of humidifier modules that are clamped between end plates by tie rods and have a membrane that is permeable to water vapor, in which on both sides of the membrane there is respectively arranged a flow field frame having a multiplicity of webs defining a flow field. The tie rods are configured as hollow rods forming coolant tubes for a coolant to be led through. A fuel cell device and a motor vehicle having such a humidifier are also provided.

Humidifier, fuel cell device having a humidifier, and motor vehicle

A fuel cell system includes a combined cooling circuit for a motor vehicle that provides a method of cooling a fuel cell of a fuel cell system.

Combined cooling circuit for a fuel cell

A humidifier comprises at least one humidifier module, which has a membrane permeable to water vapor and respectively on both sides of the membrane, a flow field frame with at least two walls defining a flow channel. A thermal bridge with an increased thermal conductivity compared to the membrane protrudes through the membrane. A fuel cell device comprises such a humidifier and a motor vehicle includes a fuel cell device comprising such a humidifier.

Humidifier, fuel cell device with a humidifier and motor vehicle with a fuel cell device comprising a humidifier

The invention relates to a method and to a device for determining the articulation angle of a combination, consisting of a towing vehicle and a trailer attached using a tongue, by identifying the hitch tongue using a digital back-up camera with variable exposure times, the following steps being carried out: a) recording a first color image of the rear environment of the towing vehicle, the color image being based on the HSY color space, b) analyzing the hue values, saturation values and brightness values of adjacent surfaces of a vehicle-environment region that is to be evaluated, c) determining the tongue from the first color image using an edge detection method in order to determine the articulation angle if the hue values, saturation values and brightness values of adjacent surfaces in the region that is to be evaluated are substantially equal, 'substantially equal' meaning that the values of hue, saturation and brightness of adjacent surfaces differ by at most a first threshold in percent, d) recording a second color image in the HSY color space if in the first color image the hue values and saturation values of adjacent surfaces in the region that is to be evaluated are substantially equal while the brightness values of the adjacent surfaces deviate greatly from each other, 'deviate greatly from each other' meaning that the brightness values of adjacent surfaces differ from each other by more than a second threshold in percent, the exposure time of the second color image being selected in such a way that the brightness values of the adjacent surfaces within the vehicle-environment region that is to be evaluated are substantially equal, e) determining the tongue from the second color image by means of an edge detection method in order to determine the articulation angle.

Method for determining the articulation angle of a combination

A fuel cell device () having a fuel cell () with a housing () and, accommodated therein, a membrane-electrode assembly () with a cathode and an anode, having a cathode gas path () that serves to transport a cathode gas and that extends through the membrane-electrode assembly () on the cathode side, and having a flushing gas path () that serves to transport a flushing gas to flush the housing () during operation and that extends through the housing () is provided. It is provided that a section of the flushing gas path () runs through the cathode gas path (). In this manner, the fuel cell device () has a compact structure of just a few parts.

Fuel cell device with a flushing gas path

A fuel cell system including: a fuel cell stack; a cathode gas supply system including a cathode supply path for feeding cathode operating gas into the fuel cell stack and a cathode exhaust gas path for discharging cathode exhaust gas out of the fuel cell stack, and a fuel cell cooling system for cooling the fuel cell stack including a coolant path into which the fuel cell stack is integrated so as to transfer heat is provided. It is provided that the cathode gas supply system also includes a turbine arranged in the cathode exhaust gas path, and the coolant path of the fuel cell cooling system in the flow path of the cathode exhaust gas downstream from the turbine is in heat-transferring contact with the cathode exhaust gas path. This achieves a cooling of the coolant by the cathode exhaust gas and a heating of the cathode exhaust gas by the coolant.

Growing community of inventors

Braunschweig, Germany

Oliver Berger