Battery information display apparatus of electric vehicle
First Claim
1. A battery information display apparatus comprising:
- a data storage unit that stores battery capacity information according to temperature and current of an electric vehicle battery, stores battery current consumption information according to driving current and speed of a motor and stores official mileage information;
a sensor that measures temperature and current of the battery and measures driving current and speed of the motor;
a display unit that displays information; and
an integrated power control unit that;
provides power for charging the battery and driving the motor;
calculates a State of Charge (SOC) of the battery based on the measured temperature and current of the battery and the stored battery capacity information;
calculates battery available capacity based on the stored battery current consumption information and the measured driving current and speed of the motor; and
calculates a distance to empty (DTE) based on the stored official mileage information and the calculated battery available capacity, the DTE calculated according to the Equation;
DTE=official mileage information*battery available capacity*SOC,wherein the display unit displays the SOC and DTE.
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Abstract
A battery information display apparatus is provided. The battery information display apparatus includes a data storage unit storing battery capacity information according to temperature and current of a battery of an electric vehicle, an integrated power control unit providing power for charging the battery and driving a motor, a sensor measuring the temperature and current of the battery, and a display unit displaying a battery remnant. The integrated power control unit calculates the battery remnant from the battery temperature and current measured by the sensor on the basis of the battery capacity information according to the battery temperature and current stored in the data storage unit and provides the calculated battery remnant to the display unit.
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Citations
12 Claims
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1. A battery information display apparatus comprising:
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a data storage unit that stores battery capacity information according to temperature and current of an electric vehicle battery, stores battery current consumption information according to driving current and speed of a motor and stores official mileage information; a sensor that measures temperature and current of the battery and measures driving current and speed of the motor; a display unit that displays information; and an integrated power control unit that; provides power for charging the battery and driving the motor; calculates a State of Charge (SOC) of the battery based on the measured temperature and current of the battery and the stored battery capacity information; calculates battery available capacity based on the stored battery current consumption information and the measured driving current and speed of the motor; and calculates a distance to empty (DTE) based on the stored official mileage information and the calculated battery available capacity, the DTE calculated according to the Equation;
DTE=official mileage information*battery available capacity*SOC,wherein the display unit displays the SOC and DTE. - View Dependent Claims (2, 3, 4, 5)
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6. A battery information display apparatus comprising:
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a data storage unit that stores battery capacity information according to temperature and current of an electric vehicle battery, stores association information between temperature of a motor or an integrated power control unit and the temperature of the battery, stores battery current consumption information according to driving current and speed of the motor and stores official mileage information; a display unit that displays information; and the integrated power control unit that; provides power for charging the battery and driving the motor; measures current of the battery, temperature of the motor, temperature of the integrated power control unit and the driving current and speed of the motor; estimates the temperature of the battery based on the measured temperature of the motor or integrated power control unit and the stored association information; calculates a State of Charge (SOC) of the battery based on the estimated temperature, measured current and stored battery capacity information; and calculates distance to empty (DTE) based on the stored current consumption information and official mileage information, wherein the display unit displays the SOC and DTE. - View Dependent Claims (7, 8, 9, 10, 11, 12)
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Specification