Efficient dual source battery pack system for an electric vehicle
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United States of America Patent
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May 29, 2012
Grant Date -
Feb 16, 2012
app pub date -
Dec 10, 2010
filing date -
Aug 10, 2010
priority date (Note) -
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Abstract
A method of optimizing the operation of the power source of an electric vehicle is provided, where the power source is comprised of a first battery pack (e.g., a non-metal-air battery pack) and a second battery pack (e.g., a metal-air battery pack). The power source is optimized to minimize use of the least efficient battery pack (e.g., the second battery pack) while ensuring that the electric vehicle has sufficient power to traverse the expected travel distance before the next battery charging cycle. Further optimization is achieved by setting at least one maximum speed limit based on vehicle efficiency and the state-of-charge (SOC) of the first and second battery packs.
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