Security method and apparatus for electric vehicle power transfer system

• US 10,404,686 B2
• Filed: 10/11/2016
• Issued: 09/03/2019
• Est. Priority Date: 10/20/2015
• Status: Active Grant

• Current Assignee: Hyundai Motor Company (Hyundai Motor Group)
• Original Assignee: Hyundai Motor Company (Hyundai Motor Group)
• Inventors: Kim, Do Hoon, Lee, Kang Hoon
• Primary Examiner(s): Flynn, Kevin H
• Assistant Examiner(s): Heflin, Brian Adams
• Application Number:
  US15/290,210
• Publication Number:
  US 20170111347A1
• Time in Patent Office: 1,057 Days
• CPC Class Codes: B60L 2250/10 by alarm
• CPC Class Codes: B60L 2250/16 by display
• CPC Class Codes: B60L 2270/32 of electricity
• CPC Class Codes: B60L 2270/38 of data
• CPC Class Codes: B60L 53/122 Circuits or methods for driving the primary coil, e.g. supplying electric power to the coil
• CPC Class Codes: B60L 53/126 Methods for pairing a vehicle and a charging station, e.g. establishing a one-to-one relation between a wireless power transmitter and a wireless power receiver
• CPC Class Codes: B60L 53/65 involving identification of vehicles or their battery types
• CPC Class Codes: G06F 21/62 Protecting access to data via a platform, e.g. using keys or access control rules
• CPC Class Codes: G06Q 30/0283 Price estimation or determination
• CPC Class Codes: G06Q 50/06 Energy or water supply
• CPC Class Codes: H04L 63/083 using passwords cryptographic mechanisms or cryptographic arrangements for entity authentication using a predetermined code H04L9/3226
• CPC Class Codes: H04W 12/033 of the user plane, e.g. user's traffic
• CPC Class Codes: H04W 12/069 using certificates or pre-shared keys
• 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 30/14 Details associated with the interoperability, e.g. vehicle recognition, authentication, identification or billing
• CPC Class Codes: Y04S 50/14 : Marketing, i.e. market research and analysis, surveying, promotions, advertising, buyer profiling, customer management or rewards

Abstract

A security method and apparatus for an electric vehicle (EV) power transfer system can prevent abuse of privacy information or financial information which is stored in an in-vehicle controller, and block fee charging and authentication. A security method for the EV power transfer system, performed by a charging controller installed in an EV, includes steps of: receiving an authentication request from a communication controller installed in the EV; authenticating second key information included in the authentication request based on first key information which is learned or stored beforehand; and when the authentication succeeds, starting a charging process.

Claims

1. A wireless power transfer controlling method for an electric vehicle (EV), the EV including a charging controller, a communication controller, and a charging authentication apparatus, the method comprising:

receiving, by the charging controller, second key information from the communication controller;

receiving, by the communication controller, an authentication request from outside of the EV;

transferring, by the communication controller, the authentication request to the charging authentication apparatus;

receiving, by the charging controller, third key information from the charging authentication apparatus;

authenticating, by the charging controller, the third key information based on the second key information;

performing, by the charging controller, a charging process in which a ground assembly wirelessly transfers power to the EV when the authentication succeeds;

receiving, by the communication controller, a request for charging a fee based on an amount of power transferred from the ground assembly to the EV; and

performing, by the charging controller, a process for charging the fee using privacy information or financial information corresponding to the second key information or the third key information.

2. The method according to claim 1, wherein the second key information or the third key information includes key information identical to an identifier or a random number stored in at least one of a controller of the EV, a smart key system control part of the EV, and an engine controller of the EV.

3. The method according to claim 1, further comprising, after the authenticating step, blocking the charging process when the authentication is determined as failed.

4. The method according to claim 1, further comprising, before the step of receiving the second key information and the step of receiving the third key information, receiving a start signal for charging the EV from an external charger or the communication controller, wherein the start signal include a beacon signal, a signal indicating start of network connection, or a wake on wireless local area network (WoWL) signal.

5. A wireless power transfer system including an electric vehicle (EV) and a ground assembly, the apparatus comprising:

a communication controller disposed in the EV and configured to receive an authentication request from outside of the EV and transfer the authentication request to a charging authentication apparatus;

a charging controller configured to receive second key information from the communication controller and third key information from the charging authentication apparatus disposed in the EV, and to compare the second key information with the third key information; and

a charging blocking part of the charging controller configured to authenticate or block a charging process in which the ground assembly wirelessly transfers power to the EV based on a result of the comparison of the second key information with the third key information,

wherein the communication controller is further configured to receive a request for charging a fee based on an amount of power transferred from the ground assembly to the EV,

wherein the charging controller is configured to perform the charging process in which the ground assembly wirelessly transfers power to the EV when the charging process is authenticated, and to perform a process for charging the fee based on the amount of power transferred from the ground assembly to the EV using privacy information or financial information corresponding to the second key information or the third key information.

6. The apparatus according to claim 5, wherein the charging blocking part is included in the charging controller equipped in the EV.

7. The apparatus according to claim 5, further comprising an interface connecting with the communication controller, wherein the interface uses a controller area network (CAN) communication in the EV.

8. The apparatus according to claim 7, wherein the apparatus further includes a storage part storing first key information, wherein:

the communication controller is configured to provide the second key information via the interface, or

the charging authentication apparatus is configured to provide the third key information via the interface.

9. The apparatus according to claim 8, wherein the charging authentication apparatus is installed in the EV as hidden and fixed by using a bracket.