System for managing battery charge of electric vehicle and method thereof

• US 8,825,247 B2
• Filed: 06/07/2012
• Issued: 09/02/2014
• 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
• Primary Examiner(s): Cheung, Mary
• Assistant Examiner(s): Sweeney, Brian P
• Application Number:
  US13/491,549
• Publication Number:
  US 20130006461A1
• Time in Patent Office: 817 Days
• Field of Search: 701/22, 180/65.1, 903/903
• 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 control server including a processor and a non-transitory computer readable medium, wherein the processor executes computer program instructions embodied in the non-transitory computer readable medium to perform the steps of:

receiving a first charging request of a first user;

generating first charging information including a first charging tolerance time and a first charging cost according to a charging mode included in user information associated with the first user and power information including on or more time zones;

determining a pre-registered second user having a movable second charging tolerance time among users of which charging information is already generated;

recalculating the second charging tolerance time of the pre-registered second user according to movement of the second charging tolerance time, recalculating the first charging tolerance time after the second charging tolerance time is moved, recalculating a second charging cost of the second user, and recalculating the first charging cost;

when a sum of the recalculated first and second charging costs is less than a sum of a sum of the previously calculated first and second charging costs, regenerating the first charging information including the recalculated first charging tolerance time and the recalculated first charging cost and regenerating the second charging information including the recalculated second charging tolerance time and the recalculated second charging cost; and

transmitting the first charging information.

2. The system of claim 1, wherein when the charging mode is set to a reserved charging mode in which charging is freely performed within a set time, setting a charging amount using the power information and the user information, and calculating an optimal time zone having a minimized charging cost calculated using a charging cost for each of the one or more time zones.

3. The system of claim 1, wherein when the charging mode is set to an immediate charging mode in which charging is immediately performed, setting a charging amount using the power information and the user information, and calculating the first charging tolerance time from a current time.

4. The system of claim 1, wherein when at least two second users have the movable charging tolerance time, selecting 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.

5. The system of claim 1, further comprising distributing, between the first user and the second user, gains of total charging costs that are obtained based on regenerated charging information.

6. The system of claim 1, wherein when power information is modified:

determining a third user having a movable charging tolerance time among users of which charging modes are set;

recalculating a third charging tolerance time of the third user;

recalculating a third charging cost of the third user according to the third charging tolerance time; and

when the recalculated third charging cost is less than a previously calculated charging cost of the third user, regenerating a third charging information including the recalculated third charging tolerance time and the recalculated third charging cost.

7. The system of claim 1, wherein the power information includes differential electric charges for at least one of the one or more time zones with respect to a smart grid and differential electric charges according to a total power consumption amount.

8. The system of claim 1, wherein the user information includes one or more of 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.

9. The system of claim 1, wherein the first charging tolerance time and the second charging tolerance time are consecutive times or discontinuous times.

10. A computer-implemented method of managing battery charge of an electric vehicle, the method comprising:

receiving, from a management center, power information about a smart grid that supplies power, the power information including one or more time zones;

receiving, from a first user, user information for setting a charging condition;

generating 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;

determining a pre-registered second user having a movable charging tolerance time among users of which charging information is already generated;

recalculating a second charging tolerance time of the second user according to movement of the charging tolerance time of the second user;

recalculating the first charging tolerance time after the second charging tolerance time is moved, and recalculating a second charging cost of the second user and the first charging cost; and

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

11. The method of claim 10, wherein when the charging mode is set to a reserved charging mode in which charging is freely performed within a set time, recalculating the first or second charging tolerance time comprises setting a charging amount using power information and user information, and calculating an optimal time zone having a minimized charging cost calculated using a charging cost for each of the one or more time zones.

12. The method of claim 10, wherein when the charging mode is set to an immediate charging mode in which charging is immediately performed, recalculating the first or second charging tolerance time comprises setting a charging amount using the power information and the user information, and calculating a time from a current time.

13. The method of claim 10, wherein when at least two second users have the movable charging tolerance time, selecting 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 of the selected second user.

14. The method of claim 10, further comprising:

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

15. The method of claim 10, wherein when the power information is modified, determining a third user having a movable charging tolerance time among users of which charging modes are set, and when a charging cost of the third user recalculated according to movement of the charging tolerance time of the third user is less than a previously calculated charging cost of the third user, regenerating third charging information including the recalculated charging tolerance time and the recalculated charging cost of the third user.

16. The method of claim 10, wherein the power information includes electric charges for at least one of the one or more time zones with respect to the smart grid or for each total power consumption amount.

17. The method of claim 10, wherein the user information includes one or more of 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.

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