Secure charging method for electric vehicles

• US 10,195,956 B2
• Filed: 06/02/2017
• Issued: 02/05/2019
• Est. Priority Date: 06/02/2017
• Status: Active Grant

• Current Assignee: United Arab Emirates University (Al Hikma Development Co. PJSC)
• Original Assignee: United Arab Emirates University (Al Hikma Development Co. PJSC)
• Inventors: Shuaib, Khaled, Barka, Ezedin, Ahmed, Juhar, Sallabi, Farag
• Primary Examiner(s): Williams, Arun C
• Application Number:
  US15/613,096
• Publication Number:
  US 20180345810A1
• Time in Patent Office: 613 Days
• Field of Search: 320109
• 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 53/14 Conductive energy transfer
• CPC Class Codes: B60L 53/305 Communication interfaces
• CPC Class Codes: B60L 53/63 in response to network capacity
• 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: H02J 7/00034 Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
• CPC Class Codes: H02J 7/00045 Authentication, i.e. circuits for checking compatibility between one component, e.g. a battery or a battery charger, and another component, e.g. a power source
• CPC Class Codes: H04L 9/14 using a plurality of keys or algorithms
• CPC Class Codes: H04L 9/3247 involving digital signatures
• 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 30/14 Details associated with the interoperability, e.g. vehicle recognition, authentication, identification or billing

Abstract

The method of location-based charging for electric vehicles provides for secure charging of electric vehicles by applying various charging mechanisms depending on users'"'"' and suppliers'"'"' specific attributes. When an operator of an electric vehicle connects the electric vehicle to electric vehicle supply equipment, a message is securely received by the electric vehicle supply equipment, which includes a set of operator-specific parameters. Based on the set of operator-specific parameters, a secure notification is transmitted to an owner of the electric vehicle supply equipment requesting authorization for the operator to charge the electric vehicle. The applicable charging mechanism of the electric vehicle is applied based on the owner'"'"'s authorization message transmitted to the electric vehicle supply equipment and the set of operator-specific parameters.

Claims

1. A secure charging method for electric vehicles, comprising the steps of:

connecting an electric vehicle to electric vehicle supply equipment;

receiving at the electric vehicle supply equipment a set of operator-specific parameters associated with an operator of the electric vehicle, wherein the set of operator-specific parameters comprise operator identification data, identification data representative of a home supplier associated with the operator, electric vehicle identification data, a requested power amount and a charging end time;

determining from the set of operator-specific parameters if the operator is a home user having private privileged access to the electric vehicle supply equipment;

charging a battery of the electric vehicle if the operator is determined to be a home user;

transmitting a notification message to an owner of the electric vehicle supply equipment if the operator is determined not to be a home user;

receiving an authorization message from the owner of the electric vehicle supply equipment;

charging the battery of the electric vehicle and debiting a charging fee associated therewith from an account of the owner of the electric vehicle supply equipment if the authorization message authorized the operator of the electric vehicle as a guest user;

determining if the operator of the electric vehicle is requesting internal roaming charging or external roaming charging if the authorization message authorized the operator of the electric vehicle to charge the battery of the electric vehicle for a fee, wherein internal roaming charging comprises charging of the battery of the electric vehicle at electric vehicle supply equipment not associated with the operator but within a supplier network associated with the operator, and external roaming charging comprises charging of the battery of the electric vehicle at electric vehicle supply equipment not belonging to the supplier network associated with the operator; and

charging the battery of the electric vehicle and debiting the charging fee associated therewith from an account of the operator of the electric vehicle, wherein the charging fee is determined from a charging rate selected from the group consisting of an internal charging rate and an external charging rate, wherein the internal charging rate is applied for internal roaming charging and the external charging rate is applied for external roaming charging.

2. The secure charging method for electric vehicles as recited in claim 1, further comprising the step of transmitting a charging request from the operator of the electric vehicle to the electric vehicle supply equipment.

3. The secure charging method for electric vehicles as recited in claim 2, further comprising the step of applying dual signature encryption to the charging request if the operator of the electric vehicle requests internal roaming charging.

4. The secure charging method for electric vehicles as recited in claim 3, further comprising the steps of:

encrypting a first portion of the charging request with a first encryption protocol; and

encrypting a second portion of the charging request with a second encryption protocol.

5. The secure charging method for electric vehicles as recited in claim 4, further comprising the steps of:

transmitting the first portion of the charging request to a visiting aggregator, wherein the first portion of the charging request comprises charging order information; and

transmitting the second portion of the charging request to the home supplier associated with the operator, wherein the second portion of the charging request comprises billing information.

6. The secure charging method for electric vehicles as recited in claim 2, further comprising the step of applying triple signature encryption to the charging request if the operator of the electric vehicle requests external roaming charging.

7. The secure charging method for electric vehicles as recited in claim 6, further comprising the steps of:

encrypting a first portion of the charging request with a first encryption protocol;

encrypting a second portion of the charging request with a second encryption protocol; and

encrypting a third portion of the charging request with a third encryption protocol.

8. The secure charging method for electric vehicles as recited in claim 7, further comprising the steps of:

transmitting the first portion of the charging request to an external aggregator, wherein the first portion of the charging request comprises charging order information;

transmitting the second portion of the charging request to a broker, wherein the second portion of the charging request comprises authorization information; and

transmitting the third portion of the charging request to the home supplier associated with the operator, wherein the third portion of the charging request comprises billing information.