Electric vehicle and driving method of electric vehicle
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United States of America Patent
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Oct 24, 2017
Grant Date -
Oct 2, 2014
app pub date -
Oct 26, 2011
filing date -
Oct 26, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
An electric vehicle comprises an electric motor for driving a wheel; a main battery for activating the electric motor; a case to which a sub-battery for activating the electric motor is detachably mounted; a connection terminal to which a terminal of the sub-battery is connected; a mounting detecting sensor for detecting that the connection terminal is connected to the terminal of the sub-battery; and a controller which detects the SOCs of the batteries and is configured such that electric power is supplied preferentially from the mounted sub-battery to the electric motor, when the SOC of the sub-battery is equal to or greater than a predetermined value, and electric power is supplied from the main battery to the electric motor, when the SOC of the sub-battery is less than the predetermined value.
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