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CHARGING DEVICE FOR ELECTRIC VEHICLE

  • US 20170072807A1
  • Filed: 01/13/2015
  • Published: 03/16/2017
  • Est. Priority Date: 04/16/2014
  • Status: Active Grant
First Claim
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1. A charging device for an electric vehicle, the charging device comprising:

  • a wireless power receiving device which receives high-frequency AC power by a magnetic field connection with a high-frequency alternating magnetic field;

    a wired power receiving device which is connected to an external power source for low-frequency AC power;

    a rectifier which rectifies AC power which is outputted from the wireless power receiving device and the wired power receiving device;

    an electric power converter which is connected to a rear part of the rectifier; and

    an power receiving device switching switch which switches electric power in such a way that electric power of the wireless power receiving device or electric power of the wired power receiving device is outputted to the rectifier;

    in which a battery is charged by DC power which is outputted from the electric power converter, whereina high-frequency filter, which removes a high-frequency component included in electric power outputted from the rectifier, is provided between the rectifier and the electric power converter,the wired power receiving device includes a full-wave rectifier by which low-frequency AC power, which is inputted from the external power source, is rectified for a full wave, an inverter which converts pulsating electric power, which is outputted from the full-wave rectifier, to high-frequency AC power in a state where a pulsating component is maintained, and an insulated transformer which is connected to a rear part of the inverter, the high-frequency filter removes a high-frequency component which is related to a high-frequency component of the high-frequency AC power;

    when electric power is received from the wireless power receiving device, DC power at a constant voltage is inputted to the electric power converter, and when electric power is received from the wired power receiving device, pulsating electric power, in which a voltage waveform of the low-frequency AC power is rectified for a full wave, is inputted to the electric power converter;

    when electric power is received from the wireless power receiving device, the electric power converter performs a resistance conversion operation in which a voltage, which is inputted to the electric power converter, is increased or decreased, and outputs a constant voltage, and when electric power is received from the wired power receiving device, the electric power converter performs a power-factor improvement operation in which a power factor of electric power, which is inputted from the external power source, is improved, and outputs a constant voltage.

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