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Voltage detector, malfunction detecting device, contactless power transmitting device, contactless power receiving device, and vehicle

  • US 8,907,680 B2
  • Filed: 05/27/2010
  • Issued: 12/09/2014
  • Est. Priority Date: 03/30/2010
  • Status: Active Grant
First Claim
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1. A voltage detector for detecting a voltage generated in a second resonant coil that is disposed to face a first resonant coil and that performs at least one of electric power transmission and electric power reception to and from said first resonant coil in a contactless manner by means of electromagnetic resonance, said voltage detector comprising:

  • a first high-impedance element having one end connected to one end of said second resonant coil;

    a second high-impedance element having one end connected to the other end of said second resonant coil;

    a low-impedance element connected between the other end of said first high-impedance element and the other end of said second high-impedance element and having an impedance smaller than each of those of said first and second high-impedance elements; and

    an output terminal for outputting a signal associated with a voltage applied across said low-impedance element,said first high-impedance element including a first capacitor, andsaid second high-impedance element including a second capacitor.

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