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AssigneeAudi AG
InventorsMartin Breu, Maximilian Schiedermeier
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A power supply device for the electric power supply of at least one consumer is provided having a primary power grid in which there is present a fuel cell arrangement comprising electric contacts which includes a discharge circuit switched in parallel and connected to the electric contacts comprising a switch element activatable by means of a controller across a switch line as well as a resistance element and having a DC-DC converter which is present in the primary power grid by which the primary power grid is connected to a secondary power grid characterized in that the discharge circuit comprises a safety device or a safety function, which holds the switch element in an opened state and thereby makes the discharge circuit inactive for as long as an actuating possibility exists via the switch line, and which places the switch element in a closed state and thereby makes the discharge circuit active for lowering the voltage of the fuel cell arrangement once the actuating possibility via the switch line is denied. Furthermore, a method for lowering the voltage of a fuel cell arrangement of a power supply device is also provided.
A power supply device for supplying electric power to at least one consumer comprising:
A method for lowering a voltage of a fuel cell arrangement of a power supply device having a secondary power grid and a primary power grid, wherein the fuel cell arrangement includes electric contacts and is present in the primary power grid, which fuel cell arrangement includes a discharge circuit switched in parallel and connected to the electric contacts, wherein the discharge circuit comprises a switch element activatable by a controller across a switch line and a resistance element, and wherein a DC-DC converter is present in the primary power grid, via which the primary power grid is connected to the secondary power grid, the method comprising:
Dependencies are inferred from the claim text.