Patents by Inventor Naoto NAGAOKA

Naoto NAGAOKA 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).

  • Cell deterioration diagnostic based on integrated value
    Patent number: 10379170
    Abstract: Relatively inexpensive and practical cell deterioration diagnostic method and cell deterioration diagnostic device are provided. A cell deterioration diagnostic method diagnoses cell deterioration of a secondary cell having a transient characteristic. The method includes: a charging step of charging the secondary cell; a calculation step of calculating an integrated value of a potential difference obtained by subtracting a cell internal voltage V0 of the secondary cell from a cell inter-terminal voltage of the secondary cell by integrating the potential difference as the cell inter-terminal voltage converges to the cell internal voltage V0 after completion of charging; and a diagnosis step of diagnosing the cell deterioration of the secondary cell based on the integrated value.
    Type: Grant
    Filed: February 24, 2016
    Date of Patent: August 13, 2019
    Assignee: The Doshisha
    Inventors: Naoto Nagaoka, Naoyuki Yoshioka, Naoya Narita
  • Cell Deterioration Diagnostic Method and Cell Deterioration Diagnostic Device
    Publication number: 20180038918
    Abstract: Relatively inexpensive and practical cell deterioration diagnostic method and cell deterioration diagnostic device are provided. A cell deterioration diagnostic method diagnoses cell deterioration of a secondary cell having a transient characteristic. The method includes: a charging step of charging the secondary cell; a calculation step of calculating an integrated value of a potential difference obtained by subtracting a cell internal voltage V0 of the secondary cell from a cell inter-terminal voltage of the secondary cell by integrating the potential difference as the cell inter-terminal voltage converges to the cell internal voltage V0 after completion of charging; and a diagnosis step of diagnosing the cell deterioration of the secondary cell based on the integrated value.
    Type: Application
    Filed: February 24, 2016
    Publication date: February 8, 2018
    Inventors: Naoto NAGAOKA, Naoyuki YOSHIOKA, Naoya NARITA, I