Patents by Inventor Kouki NAGURA

Kouki NAGURA has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Non-contact power supply apparatus
    Patent number: 9793719
    Abstract: A non-contact power supply apparatus includes a transmission-side pad, a transmission-side resonant circuit, a reception-side pad, a reception-side resonant circuit, a power transmission circuit, a power reception circuit, and a control circuit. The control circuit controls an alternating-current voltage supplied to the transmission-side pad and an alternating-current voltage supplied to the power reception circuit, so that a power factor of the alternating current supplied from the power transmission circuit to the transmission-side pad connected to the transmission-side resonant circuit and direct-current power supplied from the power supply circuit to an on-board battery are respectively set to target values. As a result, change in power factor can be suppressed even when the coupling coefficient of the transmission-side pad and the reception-side pad changes, and predetermined electric power can be transmitted.
    Type: Grant
    Filed: November 29, 2013
    Date of Patent: October 17, 2017
    Assignee: DENSO CORPORATION
    Inventors: Nobuhisa Yamaguchi, Akira Sakamoto, Kouji Mazaki, Kouki Nagura
  • NON-CONTACT POWER SUPPLY APPARATUS
    Publication number: 20150326031
    Abstract: A non-contact power supply apparatus includes a transmission-side pad, a transmission-side resonant circuit, a reception-side pad, a reception-side resonant circuit, a power transmission circuit, a power reception circuit, and a control circuit. The control circuit controls an alternating-current voltage supplied to the transmission-side pad and an alternating-current voltage supplied to the power reception circuit, so that a power factor of the alternating current supplied from the power transmission circuit to the transmission-side pad connected to the transmission-side resonant circuit and direct-current power supplied from the power supply circuit to an on-board battery are respectively set to target values. As a result, change in power factor can be suppressed even when the coupling coefficient of the transmission-side pad and the reception-side pad changes, and predetermined electric power can be transmitted.
    Type: Application
    Filed: November 29, 2013
    Publication date: November 12, 2015
    Inventors: Nobuhisa YAMAGUCHI, Akira SAKAMOTO, Kouji MAZAKI, Kouki NAGURA