APPARATUS AND METHOD OF CONTROLLING GENERATION OF ELECTRIC POWER IN VEHICLE
First Claim
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1. An apparatus for controlling generation of electric power in a vehicle, the apparatus comprising:
- an ignition detector that provides information on starting on/off of an engine to a controller;
a battery detector that is mounted on an electrode of a battery and provides information for determining a state of charge (SOC) of the battery to the controller;
an engine RPM detector that provides information on an engine RPM to the controller;
a vehicle speed detector that provides information on a traveling vehicle speed to the controller;
a throttle opening detector that provides information on an opening of a throttle valve to the controller;
an accelerator pedal detector that provides information on displacement of an accelerator pedal to the controller;
the controller that synthesizes information of the battery and traveling conditions of the vehicle according to starting-on of the engine and sequentially performs charging control, discharging control, and target charging control; and
an alternator that generates a voltage according to a control signal from the controller and follows a target SOC.
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Abstract
The present invention relates to an apparatus for controlling generation of electric power in a vehicle that is capable of calculating a target state of charge (SOC) of a battery on the basis of a SOC of the battery and an amount of accumulated current according to individual driving modes and performing a feedback control on generation of an alternator to follow the target SOC, thereby maintaining an optimal SOC and improving fuel efficiency.
18 Citations
9 Claims
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1. An apparatus for controlling generation of electric power in a vehicle, the apparatus comprising:
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an ignition detector that provides information on starting on/off of an engine to a controller; a battery detector that is mounted on an electrode of a battery and provides information for determining a state of charge (SOC) of the battery to the controller; an engine RPM detector that provides information on an engine RPM to the controller; a vehicle speed detector that provides information on a traveling vehicle speed to the controller; a throttle opening detector that provides information on an opening of a throttle valve to the controller; an accelerator pedal detector that provides information on displacement of an accelerator pedal to the controller; the controller that synthesizes information of the battery and traveling conditions of the vehicle according to starting-on of the engine and sequentially performs charging control, discharging control, and target charging control; and an alternator that generates a voltage according to a control signal from the controller and follows a target SOC. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of controlling generation of electric power in a vehicle, the method comprising:
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a step of determining whether starting-on of an engine is detected or not; a charging control step of detecting information for a battery when the starting-on of the engine is detected, determining a target state-of-charge (SOC) voltage, and controlling the generation of an alternator to be maintained at a high level; a discharging control step of controlling the generation of the alternator to be maintained at a low level until energy stored by the charging control reaches a target amount of accumulated current according to the SOC of the battery in an acceleration mode, an idle mode, or a constant-speed mode, when the charging control is completed; and a target SOC control step of determining a substantial target SOC of the battery when (lie charging control and the discharging control are completed, and performing a feedback control on the generation of the alternator to follow the target SOC. - View Dependent Claims (9)
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Specification