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Optimized charging and discharging of a plug-in electric vehicle

  • US 10,011,183 B2
  • Filed: 03/09/2016
  • Issued: 07/03/2018
  • Est. Priority Date: 03/09/2016
  • Status: Active Grant
First Claim
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1. A method comprising:

  • determining that first event data describes a Renewable Energy Output Control event (“

    REOC event”

    ) including instructions for operating a Renewable Energy Power Generation facility (“

    REPG facility”

    ) during a first duration of the REOC event, wherein the instructions direct the REPG facility to not output power to a power grid during the first duration of the REOC event;

    charging a battery system included in a Plug-in Electric Vehicle (“

    PEV”

    ) during the first duration of the REOC event, wherein the battery system is coupled to the REPG facility via a coupling that does not including the power grid and charged by the REPG facility via the coupling with power generated by the REPG facility during the first duration of the REOC event so that the REPG facility continues to generate power during the REOC event and wherein the battery system is coupled to the power grid;

    determining that second event data describes a Demand Response event (“

    DR event”

    );

    discharging at least some of the power stored in the battery system to the power grid during a second duration of the DR event;

    estimating a next journey that the PEV will take;

    estimating a departure time when the next journey will start;

    estimating a journey power value describing how much wattage the PEV will consume to complete the next journey;

    determining a PEV power value describing how much wattage the battery system is currently storing;

    calculating a charge time occurring between an end of the DR event and the departure time;

    estimating a charge time power value describing how much wattage can be stored in the battery system during the charge time; and

    determining a maximum discharge value that is a maximum amount of wattage discharged by the battery system of the PEV to the power grid during the DR event so that the battery system is storing the journey power value at the departure time, wherein the maximum discharge value is determined by solving for a following equation;

    the maximum discharge value=the charge time power value−

    the journey power value+the PEV power value and the discharging to the power grid is limited to the maximum discharge value.

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