Method and apparatus for controlling a battery car
First Claim
1. A method of controlling a car in which a motor is driven by a battery and the battery is charged with regeneration power generated by deceleration torque, said method comprising the steps of:
- charging, using regeneration power, a large-capacitance capacitor connected in parallel with a motor driving unit for driving the motor and the battery while restricting a current flowing from the battery to the large-capacitance capacitor, when a voltage of the large-capacitance capacitor is lower than a first voltage;
charging the battery to a preset voltage while restricting a current flowing from the large-capacitance capacitor to the battery, when a charging voltage of the large-capacitance capacitor is increased above a predetermined second voltage by the regeneration power; and
driving the motor with only a charge stored in the large-capacitance capacitor, when the voltage of the large-capacitance capacitor is equal to or higher than the predetermined second voltage.
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Accused Products
Abstract
A method of controlling a battery car in which a motor is driven by a battery and the battery is charged with regeneration power generated by deceleration torque comprises the steps of charging a large-capacitance capacitor connected in parallel with the battery and the motor while restricting a current flowing from the battery to the large-capacitance capacitor, when the voltage of the large-capacitance capacitor is lower than a first voltage, charging the battery to a preset voltage while restricting a current flowing from the large-capacitance capacitor to the battery, when a charging voltage of the large-capacitance capacitor is increased above a predetermined voltage by the regeneration power, and driving the motor with only the charge stored in the large-capacitance capacitor, when the voltage of the large-capacitance capacitor is at least a second voltage.
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Citations
10 Claims
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1. A method of controlling a car in which a motor is driven by a battery and the battery is charged with regeneration power generated by deceleration torque, said method comprising the steps of:
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charging, using regeneration power, a large-capacitance capacitor connected in parallel with a motor driving unit for driving the motor and the battery while restricting a current flowing from the battery to the large-capacitance capacitor, when a voltage of the large-capacitance capacitor is lower than a first voltage; charging the battery to a preset voltage while restricting a current flowing from the large-capacitance capacitor to the battery, when a charging voltage of the large-capacitance capacitor is increased above a predetermined second voltage by the regeneration power; and driving the motor with only a charge stored in the large-capacitance capacitor, when the voltage of the large-capacitance capacitor is equal to or higher than the predetermined second voltage.
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2. A control apparatus for controlling a car including a motor driven by a battery and a motor control means for charging the battery with regeneration power generated by deceleration torque of said motor, said apparatus comprising:
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a large-capacitance capacitor, connected in parallel with said motor control means and the battery, for supplying power to said motor control means; a first current control means, connected between said battery and said large-capacitance capacitor, for controlling a current flowing from said battery to said large-capacitance capacitor; and a second current control means, connected in series with said first current control means between said battery and said large-capacitance capacitor, for controlling a current flowing from said large-capacitance capacitor to said battery. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10)
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Specification