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Electric powered vehicle and control method for the same

  • US 8,793,041 B2
  • Filed: 10/31/2008
  • Issued: 07/29/2014
  • Est. Priority Date: 10/31/2008
  • Status: Active Grant
First Claim
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1. An electric powered vehicle comprising:

  • a load device configured to be capable of converting kinetic energy of said electric powered vehicle into electric power;

    an electric power feeding line for transmitting electric power output from said load device;

    a main power storage device for receiving electric power from said load device via said electric power feeding line,a plurality of sub power storage devices provided parallel with each other;

    a connection unit configured to allow electric connection of a selected one of said plurality of sub power storage devices to said electric power feeding line; and

    a control device for controlling said load device and said connection unit,said control device includinga charging control unit for executing charging control for controlling input of electric power from said load device to said main power storage device and said selected sub power storage device according to a braking request of said electric powered vehicle,a switching control unit for executing switching control for switching electrical connection between said plurality of sub power storage devices and said electric power feeding line, when determination is made that switching of said selected sub power storage device is required based on a state of charge of each of said plurality of sub power storage devices, anda selection control unit for prohibiting, when said charging control is started first, said switching control by maintaining the state in which said selected sub power storage device is electrically connected to said feed line until said charging control is completed, and for prohibiting, when said switching control is started first, said charging control by prohibiting input of the electric power from the load device to said selected sub power storage device until said switching control is completed,wherein said load device includesa motor generator for executing regenerative braking as conversion of kinetic energy of said electric powered vehicle into electric power, and for generating said kinetic energy of said electric powered vehicle by receiving electric power, andan inverter having power fed by said electric power feeding line to drive said motor Generator, and providing, via said electric power feeding line, electric power generated by said motor generator by said regenerative braking.

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