Patents by Inventor Hideaki Yonezawa

Hideaki Yonezawa 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).

  • Device and method for estimating the inputtable/outputtable power of a secondary battery
    Patent number: 7564221
    Abstract: An inputtable/outputtable power estimating device and method that can correctly estimate maximum inputtable and/or outputtable power of a secondary battery that can continue for a prescribed period of time. When the secondary battery is continuously charged or discharged for a prescribed period of time, the estimated value of a maximum possible charge and/or discharge current is estimated such that the terminal voltage of the secondary battery reaches a predetermined upper limit voltage or lower limit voltage. The inputtable and/or outputtable power is estimated as the power that can be used to charge the secondary battery or be discharged from it on the basis of the estimated maximum possible current(s) and the respective upper limit voltage or lower limit voltage.
    Type: Grant
    Filed: November 28, 2006
    Date of Patent: July 21, 2009
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Hisafumi Asai, Hideaki Yonezawa, Hideo Nakamura
  • Device and method for estimating the inputtable/outputtable power of a secondary battery
    Publication number: 20070145953
    Abstract: An inputtable/outputtable power estimating device and method that can correctly estimate maximum inputtable and/or outputtable power of a secondary battery that can continue for a prescribed period of time. When the secondary battery is continuously charged or discharged for a prescribed period of time, the estimated value of a maximum possible charge and/or discharge current is estimated such that the terminal voltage of the secondary battery reaches a predetermined upper limit voltage or lower limit voltage. The inputtable and/or outputtable power is estimated as the power that can be used to charge the secondary battery or be discharged from it on the basis of the estimated maximum possible current(s) and the respective upper limit voltage or lower limit voltage.
    Type: Application
    Filed: November 28, 2006
    Publication date: June 28, 2007
    Applicant: Nissan Motor Co., Ltd.
    Inventors: Hisafumi Asai, Hideaki Yonezawa, Hideo Nakamura