POWER MANAGEMENT OF A HYBRID VEHICLE
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United States of America Patent
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Issued Date -
Oct 15, 2009
app pub date -
Apr 8, 2009
filing date -
Apr 15, 2008
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Abandoned
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Abstract
A system and method of determining and applying power split ratios to power sources within hybrid vehicles. The power split ratio is determined using a two-scale dynamic programming technique to achieve optimal state of charge depletion over the course of a trip. On the macro-scale level, a global state of charge profile is created for the entire trip. On the micro-scale level, the state of charge profile and accompanying power split ratio is recalculated at the end of each segment as the vehicle proceeds along the trip. Various trip modeling techniques are used to provide constraints for the dynamic programming.
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