Methods and systems for power system management
First Claim
1. An energy management system for a vehicle comprising:
- a first power source configured for cranking an engine, said first power source comprising a switch configured to electrically couple the first power source to a starter for the engine, said first power source electrically isolated from auxiliary onboard loads;
a second power source configured for supplying auxiliary on board loads;
a charging subsystem electrically coupled to said first and said second power sources, said charging subsystem configured to supply charging current to said first and said second power sources; and
a controller configured to;
maintain the said first power source in a substantially fully charged condition;
determine a sequence of disconnecting non-essential auxiliary loads from said second power source; and
supply the auxiliary loads from said second power source using the determined sequence.
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Accused Products
Abstract
Methods and systems for energy management system for a vehicle are provided. The system includes a first power source configured for cranking an engine wherein the first power source includes a switch configured to electrically couple the first power source to a starter for the engine and wherein the first power source is electrically isolated from auxiliary onboard loads. The system further includes a second power source configured for supplying auxiliary on board loads, a charging subsystem electrically coupled to the first and the second power sources. The charging subsystem is configured to supply charging current to the first and the second power sources. The system further includes a controller configured to maintain the first power source in a substantially fully charged condition and supply the auxiliary loads from the second power source.
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Citations
20 Claims
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1. An energy management system for a vehicle comprising:
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a first power source configured for cranking an engine, said first power source comprising a switch configured to electrically couple the first power source to a starter for the engine, said first power source electrically isolated from auxiliary onboard loads; a second power source configured for supplying auxiliary on board loads; a charging subsystem electrically coupled to said first and said second power sources, said charging subsystem configured to supply charging current to said first and said second power sources; and a controller configured to; maintain the said first power source in a substantially fully charged condition; determine a sequence of disconnecting non-essential auxiliary loads from said second power source; and supply the auxiliary loads from said second power source using the determined sequence. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of managing a plurality of power sources, said method comprising:
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supplying cranking power to an engine starter from a cranking power source and an auxiliary power source; preferentially charging the cranking power source after the engine is started; securing the engine after a predetermined idling period of time; determining a sequence of disconnecting non-essential auxiliary loads from the auxiliary power source; supplying electrical power to a plurality of auxiliary loads from the auxiliary power source using the determined sequence; and electrically isolating the cranking power source from the auxiliary loads when the engine is secured. - View Dependent Claims (12, 13, 14)
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15. A train locomotive comprising:
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an engine; a power source utilized to start said engine, said power source configured to supply power to a non essential bus and an essential bus, and a controller coupled to said power source, said controller programmed to; determine a sequence of disconnecting non-essential auxiliary loads from the essential bus; disconnect at least one of the non essential bus and the essential bus after at least one of a predetermined time and a predetermined power source condition when the engine is not operating; supply electrical power to a plurality of auxiliary loads from the power source using said determined sequence. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification