Battery information display apparatus of electric vehicle

• US 9,211,884 B2
• Filed: 07/09/2014
• Issued: 12/15/2015
• Est. Priority Date: 09/09/2013
• Status: Expired due to Fees

• Current Assignee: LSIS Co. Ltd. (LS Corporation)
• Original Assignee: LSIS Co. Ltd. (LS Corporation)
• Inventors: Jang, Jae Hoon, Jang, Byung Woon, Park, Hong Tae, Kang, Yong Jin
• Primary Examiner(s): Edwards, Jerrah
• Assistant Examiner(s): WEBER, TAMARA L
• Application Number:
  US14/327,347
• Publication Number:
  US 20150073633A1
• Time in Patent Office: 524 Days
• US Class Current: 1/1
• CPC Class Codes: B60L 2240/545 Temperature
• CPC Class Codes: B60L 2240/547 Voltage
• CPC Class Codes: B60L 2240/549 Current
• CPC Class Codes: B60L 2250/16 by display
• CPC Class Codes: B60L 58/12 responding to state of charge [SoC]
• CPC Class Codes: B60W 10/26 for electrical energy, e.g. batteries or capacitors
• CPC Class Codes: B60W 2510/244 Charge state
• CPC Class Codes: G01R 31/367 Software therefor, e.g. for battery testing using modelling or look-up tables
• CPC Class Codes: G01R 31/382 Arrangements for monitoring battery or accumulator variables, e.g. SoC
• CPC Class Codes: H01M 10/00 Secondary cells; Manufacture thereof
• CPC Class Codes: H01M 10/486 for measuring temperature
• CPC Class Codes: H01M 10/488 Cells or batteries combined with indicating means for external visualization of the condition, e.g. by change of colour or of light density
• CPC Class Codes: H01M 2220/20 Batteries in motive systems, e.g. vehicle, ship, plane
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries

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.

Claims

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.

2. The apparatus according to claim 1, wherein the integrated power control unit calculates the SOC according to the following Equation:

3. The apparatus according to claim 1, wherein:

the data storage unit stores driving history information and charge/discharge information;

the integrated power control unit calculates an optimal driving condition based on the stored driving history information and charge/discharge information; and

the display unit displays the calculated optimal driving condition.

4. The apparatus according to claim 3, wherein the optimal driving condition comprises driving current and speed of the motor.

5. The apparatus according to claim 3, wherein the integrated power control unit transmits the driving history information, the charge/discharge information, and the optimal driving condition via a communication interface to a device or a server for managing the electric vehicle.

6. 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 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.

7. The apparatus according to claim 6, wherein the integrated power control unit calculates the SOC according to the following Equation:

8. The apparatus according to claim 6, wherein the integrated power control unit calculates battery available capacity corresponding to the stored battery current consumption information and calculates the DTE based on the calculated battery available capacity and stored official mileage information.

9. The apparatus according to claim 8, wherein the integrated power control unit calculates the DTE according to the Equation:

DTE=official mileage information*battery available capacity*SOC.

10. The apparatus according to claim 6, wherein:

the data storage unit stores driving history information and charge/discharge information;

the integrated power control unit calculates an optimal driving condition based on the stored driving history information and charge/discharge information; and

the display unit displays the optimal driving condition.

11. The apparatus according to claim 10, wherein the optimal driving condition comprises the driving current and speed of the motor.

12. The apparatus according to claim 10, wherein the integrated power control unit transmits the driving history information, the charge/discharge information, and the optimal driving condition via a communication interface to a device or a server for managing the electric vehicle.