Battery Connection System
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United States of America Patent
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Issued Date -
Feb 23, 2012
app pub date -
Dec 14, 2009
filing date -
Dec 15, 2008
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method of operating an electric vehicle including the steps of: (1) providing the electric vehicle (2) providing an electric load device on the electric vehicle (3) providing a first battery on the electric vehicle with a first state of charge (4) providing a second battery on the electric vehicle with a second state of charge lower than the first state of charge (5) determining an initial state of charge of the first battery (6) determining an initial state of charge of the second battery (7) connecting the first battery to the electric load device (8) measuring the current flow from the first battery (9) calculating an instantaneous state of charge of the first battery (10) comparing the instantaneous state of charge of the first battery with the initial state of charge of the second battery, and (11) when the instantaneous state of charge of the first battery reaches a predetermined percentage of the initial state of charge of the second battery, connecting the second battery in parallel with the first battery.
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