Method for operating a fuel cell arrangement and also a corresponding fuel cell arrangement
AssigneeAudi AG
InventorsMaximilian SCHIEDERMEIER, Martin BREU
Life of this patent
Estimating the term…
Abstract
The invention relates to a method for operating a fuel cell arrangement which has a fuel cell for providing electrical energy in an electric circuit that has a circuit which is electrically connected to the fuel cell via a DC-DC converter, and a battery. It is provided that in at least one mode of operation of the fuel cell arrangement, following a start-up of the fuel cell, the battery is electrically disconnected from the circuit, and the DC-DC converter is operated in non-switched mode in order to supply at least one electrical consumer in the circuit with electric current provided by the fuel cell. The invention further relates to a fuel cell arrangement.
Claims15
A method for operating a fuel cell arrangement, comprising:
- providing electrical energy in a circuit via a fuel cell;
- electrically connecting the circuit to the fuel cell via a DC-DC converter and a battery;
- starting-up the fuel cell;
- after starting-up the fuel cell, electrically disconnecting the battery from the circuit;
- and
- operating the DC-DC converter in a non-switched mode in order to supply at least one electrical consumer in the circuit with electric current provided by the fuel cell.
A method, comprising:
- operating a fuel cell arrangement in at least one of a first mode of operation or a second mode of operation, wherein:
- operating the fuel cell arrangement in the first mode of operation includes:
- providing electrical energy in a circuit via a fuel cell;
- electrically connecting the circuit to the fuel cell via a DC-DC converter and a battery;
- starting-up the fuel cell;
- after starting-up the fuel cell, electrically disconnecting the battery from the circuit;
- and
- operating the DC-DC converter in a non-switched mode in order to supply at least one electrical consumer in the circuit with electric current provided by the fuel cell;
- and
- operating the fuel cell arrangement in the second mode of operation includes:
- providing electrical energy in a circuit via one or more of a fuel cell and a battery;
- electrically connecting the circuit to the fuel cell via a DC-DC converter;
- electrically connecting the circuit to the battery;
- starting-up the fuel cell;
- after starting-up the fuel cell, maintaining electrically connecting the battery to the circuit;
- and
- operating the DC-DC converter in a switched mode in order to supply at least one electrical consumer in the circuit with electric current provided by one or more of the fuel cell and the battery.
A fuel cell arrangement operable in at least a first mode of operation, the fuel cell arrangement comprising:
- a circuit;
- a fuel cell for providing electrical energy in the circuit;
- a DC-DC converter, the DC-DC converter electrically connecting the circuit to the fuel cell;
- and
- a battery, wherein the fuel cell arrangement, following start-up of the fuel cell, is configured to electrically disconnect the battery from the circuit, and operate the DC-DC converter in a non-switched mode in order to supply at least one electrical consumer in the circuit with electric current provided by the fuel cell.
Dependencies are inferred from the claim text.