SYSTEM FOR MANAGING BATTERY CHARGE OF ELECTRIC VEHICLE AND METHOD THEREOF

• US 20130006461A1
• Filed: 06/07/2012
• Published: 01/03/2013
• Est. Priority Date: 06/30/2011
• Status: Active Grant

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: KIM, Ki Seok
• Granted Patent: US 8,825,247 B2
• Time in Patent Office: Days
• US Class Current: 701/22
• 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: H02J 7/00036 Charger exchanging data with battery
• CPC Class Codes: H02J 7/00047 with provisions for charging different types of batteries
• 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 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 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

Disclosed are a system and a method for managing battery charge of an electric vehicle according to the present invention. A system for managing battery charge of an electric vehicle according to the present invention may include: a message processing unit to receive, from a management center, power information about a smart grid that supplies power, to receive, from a first user, user information for setting a charging condition, and to provide set charging information; a charging time/charging cost calculator to calculate a first charging tolerance time and a first charging cost of the first user who has requested charge according to a charging mode included in the user information; and a determining unit to select a charging time zone of a minimum cost within a tolerance time based on content calculated by the charging time/charging cost calculator, and to generate charging information.

Claims

1. A system for managing battery charge of an electric vehicle, the system comprising:

a message processing unit to receive, from a management center, power information about a smart grid that supplies power, to receive, from a first user, user information for setting a charging condition, and to provide set charging information;

a charging time/charging cost calculator to calculate a first charging tolerance time and a first charging cost of the first user who has requested charge according to a charging mode included in the user information; and

a determining unit to select a charging time zone of a minimum cost within a tolerance time based on content calculated by the charging time/charging cost calculator, and to generate charging information.

2. A system for managing battery charge of an electric vehicle, the system comprising:

a determining unit to generate first charging information including a first charging tolerance time and a first charging cost of a first user who has requested charge according to a charging mode included in user information for setting a charging condition from the first user, and then to verify whether there is a pre-registered second user having a movable charging tolerance time among users of which charging information is already generated; and

a charging time/charging cost calculator to recalculate a second charging tolerance time of the second user according to movement of the charging tolerance time of the second user as the verification result, to recalculate a charging tolerance time of the first user after the charging tolerance time of the second user is moved, and to recalculate a second charging cost of the second user and the first charging cost of the first user,

wherein when a sum of recalculated charging costs of the first user and the second user is less than a sum of previously calculated charging costs of the first user and the second user, the determining unit regenerates first charging information including the recalculated first charging tolerance time and first charging cost of the first user and second charging information including the recalculated charging tolerance time and charging cost of the second user.

3. The system of claim 2, wherein when the charging mode is set to a reserved charging mode in which charging is freely performed within a set time, the charging time/charging cost calculator sets a charging amount using power information and the user information, calculates the charging tolerance time, and calculates, as the charging tolerance time, a time zone in which the charging cost calculated by calculating a charging cost for each time zone is minimized.

4. The system of claim 2, wherein when the charging mode is set to an immediate charging mode in which charging is immediately performed, the charging time/charging cost calculator sets a charging amount using power information and the user information, calculates the charging tolerance time, and calculates a time from a current time as the charging tolerance time.

5. The system of claim 2, wherein when at least two second users have the movable charging tolerance time, the determining unit selects the second user having a minimum sum of charging costs that is a sum of charging costs of the first user and the second user recalculated in regenerating charging information of all the second users and the first user, and regenerates the first charging information and the second charging information.

6. The system of claim 2, wherein the determining unit distributes, between the first user and the second user, gains of total charging costs that are obtained based on regenerated charging information.

7. The system of claim 2, wherein:

when power information is modified, the determining unit verifies whether there is the second user having the movable charging tolerance time among users of which charging modes are set, and

when a charging cost of the second user recalculated according to movement of the charging tolerance time of the second user is less than a previously calculated charging cost of the second user as the verification result, the determining unit regenerates charging information including the recalculated charging tolerance time and charging cost of the second user.

8. The system of claim 2, wherein power information includes differential electric charges for each time zone with respect to a smart grid and differential electric charges according to a total power consumption amount.

9. The system of claim 2, wherein the user information includes a charging means identifier (ID) for identifying a charging means, a user ID for identifying a user, battery information indicating a type or a characteristic of a battery, a charging mode indicating an immediate charging mode for immediate charging or a reserved charging mode for charging at a reserved time, a charging amount indicating an amount desired to be charged, an available charging time indicating a desired charging time zone, and whether a charging tolerance time is movable indicating whether preset charging information is changeable according to another user or a change in electric charges.

10. The system of claim 2, wherein the first charging tolerance time and the second charging tolerance time are consecutive times or discontinuous times.

11. A method of managing battery charge of an electric vehicle, the method comprising:

receiving, by a message processing unit from a management center, power information about a smart grid that supplies power, and receiving, from a first user, user information for setting a charging condition;

generating, by a determining unit, first charging information including a first charging tolerance time and a first charging cost of the first user who has requested charge according to a charging mode included in the user information, and then verifying whether there is a pre-registered second user having a movable charging tolerance time among users of which charging information is already generated;

recalculating, by a charging time/charging cost calculator, a second charging tolerance time of the second user according to movement of the charging tolerance time of the second user as the verification result, recalculating a charging tolerance time of the first user after the charging tolerance time of the second user is moved, and recalculating a second charging cost of the second user and the first charging cost of the first user; and

regenerating, by a determining unit, first charging information including the recalculated first charging tolerance time and first charging cost of the first user and second charging information including the recalculated charging tolerance time and charging cost of the second user when a sum of recalculated charging costs of the first user and the second user is less than a sum of previously calculated charging costs of the first user and the second user.

12. The method of claim 11, wherein the recalculating comprises setting, by the charging time/charging cost calculator, a charging amount using the power information and the user information, calculating the charging tolerance time, and calculating, as the charging tolerance time, a time zone in which the charging cost calculated by calculating a charging cost for each time zone is minimized, when the charging mode is set to a reserved charging mode in which charging is freely performed within a set time.

13. The method of claim 11, wherein the recalculating comprises setting, by the charging time/charging cost calculator, a charging amount using the power information and the user information, calculating the charging tolerance time, and calculating a time from a current time as the charging tolerance time, when the charging mode is set to an immediate charging mode in which charging is immediately performed.

14. The method of claim 11, wherein the regenerating comprises selecting, by the determining unit, the second user having a minimum sum of charging costs that is a sum of charging costs of the first user and the second user recalculated in regenerating charging information of all the second users and the first user, and regenerating the first charging information and the second charging information, when at least two second users have the movable charging tolerance time.

15. The method of claim 11, further comprising:

distributing, by the determining unit between the first user and the second user, gains of total charging costs that are obtained based on regenerated charging information.

16. The method of claim 11, wherein the regenerating comprises verifying, by the determining unit, whether there is a user having a movable charging tolerance time among users of which charging modes are set, when the power information is modified, and regenerating, by the determining unit, charging information including the recalculated charging tolerance time and charging cost of the user when a charging cost of the user recalculated according to movement of the charging tolerance time of the user is less than a previously calculated charging cost of the user as the verification result.

17. The method of claim 11, wherein the power information includes electric charges for each time zone with respect to the smart grid or for each total power consumption amount.

18. The method of claim 11, wherein the user information includes a charging means ID for identifying a charging means, a user ID for identifying a user, battery information indicating a type or a characteristic of a battery, a charging mode indicating an immediate charging mode for immediate charging or a reserved charging mode for charging at a reserved time, a charging amount indicating an amount desired to be charged, an available charging time indicating a desired charging time zone, and whether a charging tolerance time is movable indicating whether a preset charging tolerance time is changeable according to another user or a change in electric charges.

19. The method of claim 11, wherein the first charging tolerance time and the second charging tolerance time are consecutive times or discontinuous times.