Fuel cell system having an integral turbine/compressor unit
AssigneeDaimler AG
InventorsPhilipp Hausmann, Andreas Knoop
Life of this patent
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Abstract
A fuel cell system includes at least one fuel cell having an anode chamber, a cathode chamber, a hydrogen pressure reservoir, a recirculation line connecting an outlet of the anode chamber to an inlet of the anode chamber, a recirculation conveyor with a compressor wheel in the region of the recirculation line, and a turbine for expanding the hydrogen that is under pressure before entry into the anode chamber. The recirculation conveyor is driven at least partially by the turbine. The turbine and the compressor wheel are formed in one component.
Claims20
A fuel cell system, comprising:
- at least one fuel cell, which includes an anode chamber and a cathode chamber;
- a hydrogen pressure reservoir;
- a recirculation line that connects an outlet of the anode chamber to an inlet of the anode chamber;
- a recirculation conveyor with a compressor wheel in a region of the recirculation line and a turbine configured to expand hydrogen under pressure before entry into the anode chamber, the recirculation conveyor is configured to be at least partially driven by the turbine,
- wherein the turbine and the compressor wheel are integrally formed on a single rotor.
A fuel cell system, comprising:
- at least one fuel cell, which includes an anode chamber and a cathode chamber;
- a hydrogen pressure reservoir;
- a recirculation line that connects an outlet of the anode chamber to an inlet of the anode chamber;
- a recirculation conveyor with a compressor wheel in a region of the recirculation line and a turbine configured to expand hydrogen under pressure before entry into the anode chamber, the recirculation conveyor is configured to be at least partially driven by the turbine,
- wherein the turbine and the compressor wheel are a single component within a common housing,
- wherein the single component has channels connecting a region of the turbine and a region of the compressor wheel together, wherein the channels are located entirely within the common housing.
A fuel cell system, comprising:
- at least one fuel cell, which includes an anode chamber and a cathode chamber;
- a hydrogen pressure reservoir;
- a recirculation line that connects an outlet of the anode chamber to an inlet of the anode chamber;
- a recirculation conveyor with a compressor wheel in a region of the recirculation line and a turbine configured to expand hydrogen under pressure before entry into the anode chamber, the recirculation conveyor is configured to be at least partially driven by the turbine,
- wherein the turbine and the compressor wheel are a single component,
- wherein the single component is configured to be driven by a pancake electric drive motor,
- wherein a stator of the pancake electric motor is arranged above the single component, and the single component includes magnetic elements forming a rotor of the electric pancake motor.
A fuel cell system, comprising:
- at least one fuel cell, which includes an anode chamber and a cathode chamber;
- a hydrogen pressure reservoir;
- a recirculation line that connects an outlet of the anode chamber to an inlet of the anode chamber;
- a recirculation conveyor coupled to the hydrogen pressure reservoir and the recirculation line, wherein the recirculation conveyor includes a single rotor that is a turbine, compressor wheel, and a part of a motor.
Dependencies are inferred from the claim text.