Patents by Inventor Ichiro Maruta

Ichiro Maruta 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).

  • System Identification Method and System Identification Device
    Publication number: 20220091189
    Abstract: A system identification method executed by a system identification device that estimates a response of a system having a current flowing in a battery as input and an overvoltage of the battery as output, comprises: a first step of identifying the system by applying a model of the battery including a FIR model and an ARX model to the system, based on time series data of each of the current flowing in the battery and the overvoltage of the battery in a predetermined period; and a second step of estimating, based on the model of the battery, the overvoltage of the battery output from the system at an estimation target time after an input start time in the case where no current is input before the input start time and the current is input to the system from the input start time onwards.
    Type: Application
    Filed: January 10, 2020
    Publication date: March 24, 2022
    Inventors: Kensuke Osamura, Junpei Katashiba, Shuichi Adachi, Risako Sasaki, Ichiro Maruta, Takahiro Kawaguchi
  • Device for estimating parameters of battery, and estimation method
    Patent number: 10295607
    Abstract: A device for estimating parameters of battery capable of improving, by using simple calculations, estimation accuracy of a parameter and the like of a battery equivalent circuit model will be provided.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: May 21, 2019
    Assignees: CALSONIC KANSEI CORPORATION, KEIO UNIVERSITY, KYOTO UNIVERSITY
    Inventors: Atsushi Baba, Shuichi Adachi, Ichiro Maruta
  • Battery parameter estimation device and parameter estimation method
    Patent number: 10175303
    Abstract: An apparatus and method for battery parameter estimation estimate the parameters of a battery equivalent circuit model while reducing the computation load. The apparatus includes a charge/discharge current detector (3) that detects a charge/discharge current value of a battery (1); a terminal voltage detector (2) that detects a terminal voltage value of the battery (1); and an estimator (4) that estimates, based on the charge/discharge current value and the terminal voltage value, parameters in a battery equivalent circuit model (41) that approximates the Warburg impedance of the battery (1).
    Type: Grant
    Filed: October 3, 2014
    Date of Patent: January 8, 2019
    Assignees: CALSONIC KANSEI CORPORATION, KEIO UNIVERSITY, KYOTO UNIVERSITY
    Inventors: Atsushi Baba, Shuichi Adachi, Ichiro Maruta
  • BATTERY PARAMETER ESTIMATION DEVICE AND PARAMETER ESTIMATION METHOD
    Publication number: 20160252585
    Abstract: An apparatus and method for battery parameter estimation estimate the parameters of a battery equivalent circuit model while reducing the computation load. The apparatus includes a charge/discharge current detector (3) that detects a charge/discharge current value of a battery (1); a terminal voltage detector (2) that detects a terminal voltage value of the battery (1); and an estimator (4) that estimates, based on the charge/discharge current value and the terminal voltage value, parameters in a battery equivalent circuit model (41) that approximates the Warburg impedance of the battery (1).
    Type: Application
    Filed: October 3, 2014
    Publication date: September 1, 2016
    Applicants: CALSONIC KANSEI CORPORATION, KEIO UNIVERSITY, KYOTO UNIVERSITY
    Inventors: Atsushi BABA, Shuichi ADACHI, Ichiro MARUTA
  • DEVICE FOR ESTIMATING PARAMETERS OF BATTERY, AND ESTIMATION METHOD
    Publication number: 20150260800
    Abstract: A device for estimating parameters of battery capable of improving, by using simple calculations, estimation accuracy of a parameter and the like of a battery equivalent circuit model will be provided.
    Type: Application
    Filed: September 27, 2013
    Publication date: September 17, 2015
    Applicants: CALSONIC KANSEI CORPORATION, KYOTO UNIVERSITY, KEIO UNIVERSITY
    Inventors: Atsushi Baba, Shuichi Adachi, Ichiro Maruta