Patents by Inventor Yukihito Makabe

Yukihito Makabe 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).

  • Power supply system
    Patent number: 8212516
    Abstract: A power supply system is provided that includes a fuel cell as its energy source and has not only high energy density but also high power density and can respond to sharp change in the power consumption with simple means. In a power supply system, a fuel cell is connected to the input terminal of a DC/DC converter, and a lithium-ion secondary battery and a load are connected to the output terminal in parallel. A voltage measurement device that measures the terminal voltage of the secondary battery and a control microcomputer that sets the target output voltage of the converter are provided, and the target output voltage is set slightly higher than the terminal voltage. The fuel cell is operated within a power generation condition offering the highest fuel conversion efficiency.
    Type: Grant
    Filed: January 22, 2008
    Date of Patent: July 3, 2012
    Assignee: Sony Corporation
    Inventors: Shuji Goto, Takashi Tomita, Yukihito Makabe
  • POWER SUPPLY SYSTEM
    Publication number: 20110001453
    Abstract: A power supply system is provided that includes a fuel cell as its energy source and has not only high energy density but also high power density and can respond to sharp change in the power consumption with simple means. In a power supply system, a fuel cell is connected to the input terminal of a DC/DC converter, and a lithium-ion secondary battery and a load are connected to the output terminal in parallel. A voltage measurement device that measures the terminal voltage of the secondary battery and a control microcomputer that sets the target output voltage of the converter are provided, and the target output voltage is set slightly higher than the terminal voltage. The fuel cell is operated within a power generation condition offering the highest fuel conversion efficiency.
    Type: Application
    Filed: January 22, 2008
    Publication date: January 6, 2011
    Applicant: SONY CORPORATION
    Inventors: Shuji Goto, Takashi Tomita, Yukihito Makabe