Electric vehicle battery management

• US 9,505,308 B2
• Filed: 02/20/2014
• Issued: 11/29/2016
• Est. Priority Date: 02/21/2013
• Status: Active Grant

• Current Assignee: KT Corporation
• Original Assignee: KT Corporation
• Inventors: Kyoung, Jin-Soo
• Primary Examiner(s): Levin, Naum B
• Application Number:
  US14/184,928
• Publication Number:
  US 20140232356A1
• Time in Patent Office: 1,013 Days
• US Class Current: 1/1
• CPC Class Codes: B60L 2200/12 Bikes
• CPC Class Codes: B60L 2240/547 Voltage
• CPC Class Codes: B60L 2240/549 Current
• CPC Class Codes: B60L 2240/70 Interactions with external data bases, e.g. traffic centres
• CPC Class Codes: B60L 3/0046 relating to electric energy storage systems, e.g. batteries or capacitors
• CPC Class Codes: B60L 3/12 Recording operating variables ; Monitoring of operating variables
• CPC Class Codes: B60L 58/13 Maintaining the SoC within a determined range
• CPC Class Codes: B60L 58/16 responding to battery ageing, e.g. to the number of charging cycles or the state of health [SoH]
• 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 90/16 Information or communication technologies improving the operation of electric vehicles

Abstract

The disclosure is related to a battery management of an electric vehicle. Particularly, the disclosure relates to performing the battery management according to a ‘state of charge’ (SOC) management condition predetermined for an electric vehicle battery.

Claims

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

predetermining a management condition associated with a state of charge (SOC) of the electric vehicle battery, wherein the predetermined management condition includes a predetermined target SOC range;

collecting SOC information of the electric vehicle battery from an electric vehicle terminal; and

performing a battery management based on whether the collected SOC information satisfies the predetermined SOC management condition,

wherein the performing includes;

obtaining SOC history information by analyzing the collected SOC information, wherein the SOC history information includes information on at least one of an actual charge start SOC and an actual charge end SOC associated with charging of the electric vehicle battery;

determining a conformity degree of the SOC history information and the predetermined SOC management condition by comparing the actual charge start/end SOC information to the predetermined target SOC range; and

creating SOC management evaluation information based on the conformity degree; and

wherein the determining the conformity degree includes;

determining the conformity degree based on at least one of (i) whether the actual charge start SOC and the actual charge end SOC are within the predetermined target SOC range, (ii) a proximity degree between the actual charge start SOC and a lower limit SOC value of the predetermined target SOC range, and (iii) a proximity degree between the actual charge end SOC and an upper limit SOC value of the predetermined target SOC range.

2. The method of claim 1, wherein the predetermining includes:

providing at least one SOC option to user equipment;

receiving a selection of the at least one SOC option from the user equipment; and

determining the management condition as an SOC management condition corresponding to a selected SOC option.

3. The method of claim 2, wherein the at least one SOC option is determined based on at least one of a driving pattern and a battery management pattern of a corresponding user.

4. The method of claim 3, wherein the battery management pattern is determined based on a corresponding SOC management history.

5. The method of claim 1, wherein the performing includes:

determining whether the collected SOC information is within the predetermined target SOC range;

creating a battery management guide information when the collected SOC information is not within the predetermined target SOC range; and

transmitting the battery management guide information to at least one of user equipment and the electric vehicle terminal.

6. The method of claim 5, wherein the battery management guide information includes at least one of a charge start SOC and a charge end SOC to be applied for charging of the electric vehicle battery.

7. The method of claim 1, wherein the performing includes:

transmitting the SOC management evaluation information to a corresponding business operator system.

8. The method of claim 7, wherein the creating the SOC management evaluation information is performed at least one of (i) at a predetermined period and (ii) when a request is received from the corresponding business operator system.

9. The method of claim 7, comprising:

determining at least one of an incentive and a penalty for a corresponding user according to the conformity degree; and

transmitting the at least of the incentive and the penalty, to at least one of the corresponding business operator system and user equipment.

10. An apparatus for managing an electric vehicle battery, the apparatus comprising:

a management condition determining processor configured to predetermine a management condition associated with a state of charge (SOC) of the electric vehicle battery, wherein the predetermined management condition includes a predetermined target SOC range;

an SOC information collecting processor configured to collect SOC information of the electric vehicle battery from an electric vehicle terminal; and

an SOC management processor configured to create at least one of a battery management guide information and an SOC management evaluation information by comparing the SOC information and the predetermined SOC management condition,

wherein the SOC management processor is configured to;

obtain SOC history information by analyzing the collected SOC information, wherein the SOC history information includes information on at least one of an actual charge start SOC and an actual charge end SOC associated with charging of the electric vehicle battery;

determine a conformity degree of the SOC history information and the predetermined SOC management condition by comparing the actual charge start/end SOC information to the predetermined target SOC range; and

create the SOC management evaluation information based on the conformity degree; and

wherein the conformity degree is determined based on at least one of;

(i) whether the actual charge start SOC and the actual charge end SOC are within the predetermined target SOC range;

(ii) a proximity degree between the actual charge start SOC and a lower limit SOC value of the predetermined target SOC range; and

(iii) a proximity degree between the actual charge end SOC and an upper limit SOC value of the predetermined target SOC range.

11. The apparatus of claim 10, further comprising:

an information providing processor configured to;

(i) transmit the battery management guide information to at least one of user equipment and the electric vehicle terminal; and

(ii) transmit the SOC management evaluation information to a corresponding business operator system.

12. The apparatus of claim 10, wherein the battery management guide information includes at least one of a charge start SOC and a charge end SOC to be applied for charging of the electric vehicle battery.

13. The apparatus of claim 10, wherein the battery management guide information is created when the collected SOC information is not within the predetermined target SOC range.