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US 8,508,069 B2Granted
Vehicular electrical systems
AssigneeGM Global Technology Operations LLC
InventorJochen Schaffnit
Life of this patent
Estimating the term…
Abstract
Vehicular electrical systems are provided. The vehicular electrical systems include a first direct current (DC) voltage supply, a second DC voltage supply coupled to the first DC voltage supply, a first direct current-to-direct current (DC/DC) power converter coupled to the first and second DC voltage supplies, a second DC/DC power converter coupled to first and second DC voltage supplies and the first DC/DC power converter, and a power receptacle electrically connected to the second DC/DC power converter. The second DC/DC power converter is configured to regulate power flow between the first and second voltage supplies and the power receptacle.
Claims15
A vehicular electrical system comprising:
- a first direct current (DC) voltage supply including a fuel cell;
- a second DC voltage supply including a battery coupled to the first DC voltage supply;
- a first direct current-to-direct current (DC/DC) power converter coupled to the first and second DC voltage supplies;
- a second DC/DC power converter coupled to first and second DC voltage supplies and the first DC/DC power converter;
- and
- a power receptacle electrically connected to the second DC/DC power converter,
- a processing system in operable communication with the first and second DC voltage supplies, the first and second DC/DC power converters and the processing system:
- operates the second DC/DC power converter to limit power provided to the power receptacle based on an available voltage of the fuel cell and the battery;
- and
- operates the second DC/DC power converter to limit power provided to the power receptacle based on a voltage threshold,
- wherein the second DC/DC power converter regulates power flow between the first and second voltage supplies and the power receptacle such that both the first and second voltage supplies supply power to an external load coupled to the power receptacle.
8 more elements
An automotive electrical system comprising:
- a first direct current (DC) voltage supply including a fuel cell;
- a second DC voltage supply including a battery coupled to the first DC voltage supply;
- a first direct current-to-direct current (DC/DC) power converter coupled to the first and second DC voltage supplies, the first DC/DC power converter being configured to control power flow between the first DC voltage supply and the second DC voltage supply;
- a node electrically connected between the first DC voltage supply and the first DC/DC power converter;
- a power receptacle coupled to the node;
- and
- a second DC/DC power converter electrically connected between the node and the power receptacle, and the second DC/DC power converter regulates power flow between the first and second DC voltage supplies and the power receptacle such that both the first and second DC voltage supplies supply power to an external load coupled to the power receptacle;
- a processing system in operable communication with the first and second DC voltage supplies, the first and second DC/DC power converters and the processing system:
- operates the second DC/DC power converter to limit power provided to the power receptacle based on an available voltage of the fuel cell and the battery;
- and
- operates the second DC/DC power converter to limit power provided to the power receptacle based on a voltage threshold.
8 more elements
An automotive electrical system comprising:
- a first direct current (DC) voltage supply including a fuel cell;
- a second DC voltage supply including a battery coupled to the first DC voltage supply;
- a first direct current-to-direct current (DC/DC) power converter coupled to the first and second DC voltage supplies;
- a node electrically connected between the first DC voltage supply and the first DC/DC power converter;
- a power receptacle coupled to the node;
- a second DC/DC power converter electrically connected between the node and the power receptacle that regulates power flow between the first and second DC voltage supplies and the power receptacle such that both the first and second DC voltage supplies supply power to an external load coupled to the power receptacle;
- and
- a processing system in operable communication with the first and second DC voltage supplies and the first and second DC/DC power converters, and the processing system:
- operates the second DC/DC power converter to limit power provided to the power receptacle based on an available voltage of the fuel cell;
- and
- operates the second DC/DC power converter to limit power provided to the power receptacle based on a voltage threshold.
8 more elements
Dependencies are inferred from the claim text.