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Authorization in a networked electric vehicle charging system

  • US 10,135,262 B2
  • Filed: 11/13/2017
  • Issued: 11/20/2018
  • Est. Priority Date: 07/23/2009
  • Status: Active Grant
First Claim
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1. A method in a networked electric vehicle charging station that is coupled with an electric vehicle charging station network server, the method comprising:

  • receiving, from the electric vehicle charging station network server over a network, a first list that includes a first plurality of identifiers that identify a first plurality of electric vehicle operators respectively, wherein the first list is applicable to a first time period of a day;

    receiving, from the electric vehicle charging station network server over the network, a second list that includes a second plurality of identifiers that identify a second plurality of electric vehicle operators respectively, wherein the second list is applicable to a second time period of the day, wherein the first time period of the day and the second time period of the day are different;

    receiving, during the first time period of the day, a first charging session request that requests a first charging session between a first electric vehicle and the networked electric vehicle charging station, wherein the first charging session request includes a first identifier that identifies a first electric vehicle operator;

    responsive to determining that a connection to the electric vehicle charging station network server is not functioning correctly, performing a local authorization for the first charging session request including comparing the first identifier against the first plurality of identifiers on the first list to determine whether to authorize the first charging session, wherein determining to compare the first identifier against the first plurality of identifiers on the first list is a result of the first charging session request being received during the first time period of the day;

    receiving a second charging session request that requests a second charging session between a second electric vehicle and the networked electric vehicle charging station, wherein the second charging session request includes a second identifier that identifies a second electric vehicle operator;

    responsive to determining that the connection to the electric vehicle charging station network server is functioning properly, performing the following;

    transmitting, to the electric vehicle charging station network server, a charging session authorization request that includes the second identifier,receiving, from the electric vehicle charging station network server over the network, a charging session authorization reply that indicates whether authorize the second charging session, anddetermining whether to grant or deny the second charging session based on the charging session authorization reply;

    receiving, during the second time period of the day, a third charging session request that requests a third charging session between a third electric vehicle and the networked electric vehicle charging station, wherein the third charging session request includes a third identifier that identifies a third electric vehicle operator; and

    responsive to determining that the connection to the electric vehicle charging station network server is not functioning correctly, performing a local authorization for the third charging session request including comparing the third identifier against the second plurality of identifiers on the second list to determine whether to authorize the third charging session, wherein determining to compare the third identifier against the second plurality of identifiers on the second list is a result of the third charging session request being received during the second time period of the day.

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