Fuel cell range extender
AssigneeMAGNA STEYR Fahrzeugtechnik AG & Co KG
InventorsPhilipp Gutruf, Julian Goellner, Michael Martin
Life of this patent
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Abstract
A hybrid vehicle having an electric drive with a power accumulator, a fuel cell, and a control unit configured to control the operation of the fuel cell. The control unit has logic, at least partially including hardware configured to activate and deactivate the fuel cell as a function of a first characteristic map having a first input variable representing a present power demand of the hybrid vehicle which exists over a first defined observation time range.
Claims17
A method for operating a fuel cell of a hybrid vehicle having an electric drive having a power accumulator configured to charge the fuel cell, the method comprising:
- activating and deactivating the fuel cell as a function of a first characteristic map having a first input variable representing a present power demand of the hybrid vehicle which exists over a first defined observation time range, a second input variable of representing a present charge state of the power accumulator, and a third input variable representing a present vehicle velocity.
A hybrid vehicle, comprising:
- an electric drive;
- a power accumulator for the electric drive;
- a fuel cell configured to charge the power accumulator;
- and
- a control unit having logic, at least partially comprising hardware configured to:
- activate and deactivate the fuel cell as a function of a first characteristic map having a first input variable representing a present power demand of the hybrid vehicle which exists over a first defined observation time range, a second input variable of representing a present charge state of the power accumulator, and a third input variable representing a present vehicle velocity.
A hybrid vehicle, comprising:
- an electric drive;
- a power accumulator for the electric drive;
- a fuel cell configured to charge the power accumulator;
- and
- a control unit operatively connected, the control unit having logic, at least partially comprising hardware configured to:
- operate the fuel cell, when activated, as a function of a characteristic map having a first input variable representing a present power request by a driver of the hybrid vehicle, the characteristic map also having at least one first hysteresis, so that a first characteristic curve for increasing the present power request of the fuel cell as a function of the first input variable is different from a second characteristic curve for reducing the requested power of the fuel cell as a function of the first input variable.
Dependencies are inferred from the claim text.