Apparatus and method for energy management for dual energy storage
AssigneeGM Global Technology Operations LLC
InventorsSuresh Gopalakrishnan, Chandra S. Namuduri
Life of this patent
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Abstract
An electrical energy management system includes a first battery having a nominal operating voltage, a second battery having a charging voltage sufficiently close to the nominal operating voltage of the first battery such that the first battery can charge the second battery when the first battery and the second battery are electrically connected in parallel, a generator that is controllable to provide a variable output voltage, a starter motor, an electrical load, a plurality of switches each controllable to be in an open state or a closed state, and a controller that is configured to control the output voltage of the generator and to control the open or closed state of each of the plurality of switches.
Claims20
An electrical energy management system for a powertrain, the powertrain comprising an internal combustion engine configured to deliver mechanical energy to a mechanical load, the electrical energy management system comprising:
- a first battery having a nominal operating voltage;
- a second battery having a charging voltage sufficiently close to the nominal operating voltage of the first battery such that the first battery can charge the second battery when the first battery and the second battery are electrically connected in parallel;
- a generator that is controllable to provide a variable output voltage;
- a starter motor;
- an electrical load;
- a plurality of switches in electrical communication with at least one of the first battery and the second battery, each of the plurality of switches controllable to be in an open state or a closed state;
- a controller that is configured to control the output voltage of the generator and to control the open or closed state of each of the plurality of switches, the controller including non-transitory computer-readable media containing instructions that when executed cause the controller to execute a method comprising the steps of:
- receiving information regarding operating conditions of the powertrain;
- determining a desired operating mode based on the operating conditions;
- determining a desired operating scenario based on the operating conditions;
- and
- providing control signals to configure the generator and each of the plurality of switches, wherein the configuration of the generator and the configuration of the switches is based on the desired operating scenario.
A method for controlling an electrical energy management system for a powertrain, the powertrain comprising an internal combustion engine configured to deliver mechanical energy to a mechanical load, the electrical energy management system comprising:
- a first battery having a nominal operating voltage;
- a second battery having a charging voltage sufficiently close to the nominal operating voltage of the first battery such that the first battery can charge the second battery when the first battery and the second battery are electrically connected in parallel;
- a generator that is controllable to provide a variable output voltage;
- a starter motor;
- an electrical load;
- a plurality of switches in electrical communication with at least one of the first battery and the second battery, each of the plurality of switches controllable to be in an open state or a closed state;
- the method comprising the steps of:
- receiving information regarding operating conditions of the powertrain;
- determining a desired operating mode based on the operating conditions;
- determining a desired operating scenario based on the operating conditions;
- and
- providing control signals to configure the generator and each of the plurality of switches, wherein the configuration of the generator and the configuration of the switches is based on the desired operating scenario.
Dependencies are inferred from the claim text.