Apparatus and method for managing energy of electric vehicle

• US 9,156,366 B2
• Filed: 07/12/2013
• Issued: 10/13/2015
• Est. Priority Date: 01/22/2013
• Status: Active Grant

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: Kim, Ki-Seok
• Primary Examiner(s): DOAN, NGHIA M
• Application Number:
  US13/940,908
• Publication Number:
  US 20140203775A1
• Time in Patent Office: 823 Days
• Field of Search: 320/104, 320/137
• US Class Current: 1/1
• CPC Class Codes: B60L 2240/68 Traffic data
• CPC Class Codes: B60L 2240/70 Interactions with external data bases, e.g. traffic centres
• CPC Class Codes: B60L 2240/80 Time limits
• CPC Class Codes: B60L 2250/14 by input of vehicle departure time
• CPC Class Codes: B60L 2260/44 by parameter estimation
• CPC Class Codes: B60L 3/12 Recording operating variables ; Monitoring of operating variables
• CPC Class Codes: B60L 53/14 Conductive energy transfer
• CPC Class Codes: B60L 53/63 in response to network capacity
• CPC Class Codes: B60L 53/64 Optimising energy costs, e.g. responding to electricity rates
• CPC Class Codes: B60L 53/65 involving identification of vehicles or their battery types
• CPC Class Codes: B60L 53/665 Methods related to measuring, billing or payment
• CPC Class Codes: B60L 55/00 Arrangements for supplying energy stored within a vehicle to a power network, i.e. vehicle-to-grid [V2G] arrangements
• CPC Class Codes: Y02E 60/00 Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 10/72 Electric energy management in electromobility
• CPC Class Codes: Y02T 90/12 Electric charging stations
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles
• CPC Class Codes: Y02T 90/16 Information or communication technologies improving the operation of electric vehicles
• CPC Class Codes: Y02T 90/167 Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: Y04S 10/126 : the energy generation units being or involving electric vehicles [EV] or hybrid vehicles [HEV], i.e. power aggregation of EV or HEV, vehicle to grid arrangements [V2G]
• CPC Class Codes: Y04S 30/12 : Remote or cooperative charging
• CPC Class Codes: Y04S 30/14 : Details associated with the interoperability, e.g. vehicle recognition, authentication, identification or billing

Abstract

A system and method for managing energy of an electric vehicle are provided to calculate a necessary amount of energy based on battery characteristics and a user'"'"'s schedule, and control charging and discharging of the electric vehicle using power information provided by a smart grid. The system includes a cloud server configured to collect a schedule from a user and store and generate the user'"'"'s schedule information, an energy management device configured to calculate necessary energy based on the received schedule information of the user, set charging information based on power network state information received from a power supplier and the calculated necessary energy, generate a charging request signal based on the set charging information, and store electric energy, and a charging unit configured to transfer the electric energy to the energy management device based on the received charging request signal.

Claims

1. An apparatus for managing energy of an electric vehicle, the apparatus comprising:

a communication unit configured to receive a user'"'"'s schedule information from the user, and receive power network state information from a power supplier;

a control unit configured to set charging information based on the received schedule information of the user, battery information, and the received power network state information, and generate and transfer a charging request signal for charging a battery based on the charging information, wherein when the schedule information comprises a periodic schedule, the control unit is configured to set the charging information to include a charging amount necessary for the periodic schedule, and when the scheduling information comprises an aperiodic schedule and the periodic schedule, the control unit is configured to reset the charging information to include the charging amount necessary for the periodic schedule and a charging amount necessary for the aperiodic schedule; and

an energy storage unit configured to store electric energy received according to the charging information.

2. The apparatus of claim 1, wherein the user'"'"'s schedule information comprises place information and time information about the user'"'"'s schedule.

3. The apparatus of claim 1, wherein the power network state information comprises power network load information and electricity sale price information.

4. The apparatus of claim 1, wherein the control unit sets the charging information by further considering battery characteristics and capacity comprised in the energy storage unit.

5. The apparatus of claim 1, wherein the charging information comprises at least one of charging time information, charging cycle information, charging amount information, and charging place information.

6. The apparatus of claim 1, wherein the control unit sets the charging information so that the battery is charged with electricity for a time in which electricity sale price is lowest based on the received power network state information.

7. A method of managing energy of an electric vehicle, the method comprising:

receiving a user'"'"'s schedule information and power network state information;

calculating necessary energy based on the received schedule information of the user, wherein when the schedule information comprises a periodic schedule, the control unit is configured to set the charging information to include a charging, amount necessary for the periodic schedule, and when the scheduling information comprises an aperiodic schedule and the periodic schedule, the control unit is configured to reset the charging information to include the charging amount necessary for the periodic schedule and a charging amount necessary for the aperiodic schedule;

setting charging information based on the calculated necessary energy, battery characteristics, and the power network state information; and

charging a battery with electric energy according to the set charging information.

8. The method of claim 7, wherein the user'"'"'s schedule information comprises place information and time information about the user'"'"'s schedule.

9. The method of claim 7, wherein the power network state information comprises power network load information and electricity sale price information.

10. The method of claim 7, wherein the charging information is set by further considering battery characteristics and capacity.

11. The method of claim 7, wherein the charging information comprises at least one of charging time information, charging cycle information, charging amount information, and charging place information.

12. The method of claim 11, wherein the charging information is set so that the battery is charged with electricity for a time in which electricity sale price is lowest based on the received power network state information.