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Interactive battery charger for electric vehicle

  • US 7,679,336 B2
  • Filed: 02/27/2007
  • Issued: 03/16/2010
  • Est. Priority Date: 02/27/2007
  • Status: Active Grant
First Claim
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1. A method for recharging an electric storage battery of a vehicle powered at least in part by electric energy from an electric utility power grid, the method comprising the steps of:

  • (a) determining a magnitude of electric energy required to recharge the battery to a desired state of charge;

    (b) determining a maximum time rate at which the battery can be recharged; and

    (c) using information from steps (a) and (b) to determine a length of time required to recharge the battery;

    (d) determining a desired time when the recharge is to be completed;

    (e) transmitting information from steps (c) and (d) to the electric power utility;

    (f) recharging the battery from the utility grid during a period when projected load demand is lower than peak demand and ending no later than the desired time.

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