Patents by Inventor Tomomi Kataoka

Tomomi Kataoka 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).

  • Patent number: 11313911
    Abstract: A parameter estimation device includes: a voltage acquisition unit; a current acquisition unit; a parameter estimation unit; an internal resistance deriving unit; and a determination unit configured to determine, on the basis of a result of comparison between the internal resistance estimated by the parameter estimation unit and the internal resistance derived by the internal resistance deriving unit, whether or not to replace parameters of the secondary battery with the plurality of parameters estimated by the parameter estimation unit.
    Type: Grant
    Filed: March 19, 2019
    Date of Patent: April 26, 2022
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Tomomi Kataoka, Hiroaki Takechi
  • Publication number: 20220027838
    Abstract: This delivery plan generation device includes: a vehicle information acquisition unit configured to acquire vehicle information of an electric vehicle; an SOC acquisition unit configured to acquire an SOC of a secondary battery mounted to the electric vehicle; a delivery destination information acquisition unit configured to acquire delivery destination information of a package; a calculation unit configured to calculate a traveling possible distance of the electric vehicle on the basis of the vehicle information and the SOC of the secondary battery; and a delivery plan generation unit configured to generate the delivery plan, using the delivery destination information and the calculated traveling possible distance.
    Type: Application
    Filed: September 13, 2019
    Publication date: January 27, 2022
    Applicant: Sumitomo Electric Industries, Ltd.
    Inventor: Tomomi KATAOKA
  • Publication number: 20220020082
    Abstract: A rental information generation device includes: a requirement information acquisition unit configured to acquire requirement information of a user regarding use of an electric vehicle equipped with a secondary battery; a stock information acquisition unit configured to acquire stock information of objects including at least either one of a secondary battery and an electric vehicle; a decision unit configured to decide an object selection condition on the basis of the acquired requirement information and stock information; and a generation unit configured to generate rental information regarding an object to be rented out to the user on the basis of the decided selection condition.
    Type: Application
    Filed: September 20, 2019
    Publication date: January 20, 2022
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Tomomi KATAOKA, Hiroaki TAKECHI, Aoi HATANAKA
  • Publication number: 20210325468
    Abstract: A first parameter estimation device includes a sequential estimation unit configured to sequentially estimate parameters of an equivalent circuit of a secondary battery on the basis of a current and a voltage of the secondary battery when charging or discharging of the secondary battery has been performed on the basis of a current pattern. A second parameter estimation device includes: a collective estimation unit configured to collectively estimate parameters of the equivalent circuit of the secondary battery on the basis of a current and a voltage having been collected; and an output unit configured to output the estimated parameters to the first parameter estimation device. The first parameter estimation device further includes an update unit configured to update the sequentially estimated parameters with the collectively estimated parameters.
    Type: Application
    Filed: October 15, 2019
    Publication date: October 21, 2021
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventor: Tomomi KATAOKA
  • Publication number: 20210190876
    Abstract: A parameter estimation device configured to estimate a parameter of an equivalent circuit model of a secondary battery includes: a voltage acquisition unit configured to acquire a voltage of the secondary battery in a time-series manner; a current acquisition unit configured to acquire a charge/discharge current of the secondary battery in a time-series manner; an estimation unit configured to estimate the parameter on the basis of the voltage acquired by the voltage acquisition unit and the charge/discharge current acquired by the current acquisition unit; and a prohibition unit configured to prohibit the estimation of the parameter performed by the estimation unit, on the basis of the charge/discharge current acquired by the current acquisition unit or the voltage acquired by the voltage acquisition unit.
    Type: Application
    Filed: January 10, 2019
    Publication date: June 24, 2021
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Hiroaki TAKECHI, Tomomi KATAOKA
  • Publication number: 20210184278
    Abstract: A battery monitoring device includes: a voltage acquisition unit acquiring unit cells voltages; a current acquisition unit acquiring a secondary battery charge/discharge current; a first state-of-charge calculation unit calculating a charge first state on a first voltage basis acquired at a first time at which a predetermined switch is OFF, in a first trip period; a second state-of-charge calculation unit calculating a charge second state on a second voltage basis acquired at a second time at which the switch is OFF, in a second trip period; a charge/discharge amount calculation unit calculating a secondary battery charge/discharge amount from the first to second time; a full charge capacity calculation unit calculating each unit cell unit full charge capacity on the basis of the charge first and second states, and the charge/discharge amount; and an update unit updating a second battery full charge capacity on the calculated unit full charge capacity basis.
    Type: Application
    Filed: August 28, 2018
    Publication date: June 17, 2021
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Tomomi KATAOKA, Hiroaki TAKECHI
  • Publication number: 20210123980
    Abstract: A parameter estimation device includes: a voltage acquisition unit; a current acquisition unit; a parameter estimation unit; an internal resistance deriving unit; and a determination unit configured to determine, on the basis of a result of comparison between the internal resistance estimated by the parameter estimation unit and the internal resistance derived by the internal resistance deriving unit, whether or not to replace parameters of the secondary battery with the plurality of parameters estimated by the parameter estimation unit.
    Type: Application
    Filed: March 19, 2019
    Publication date: April 29, 2021
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Tomomi KATAOKA, Hiroaki TAKECHI
  • Patent number: 10656213
    Abstract: An internal resistance calculation device is provided with: a voltage obtaining portion that obtains the voltage of a secondary battery; a current obtaining portion that obtains the current of the secondary battery; a switching determination portion that determines the presence or absence of switching between charging and discharging of the secondary battery based on the obtained current; an identification portion that identifies a waiting time based on a boundary frequency range in which the diffusion impedance arising from the process of diffusion of a predetermined ion contributes to the impedance of the secondary battery in the impedance spectrum of the secondary battery; and a resistance calculation portion that calculates the internal resistance of the secondary battery based on the voltage and the current obtained after the identified waiting time in a case where it is determined that switching between charging and discharging of the secondary battery is present.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: May 19, 2020
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Hiroaki Takechi, Tomomi Kataoka, Youhei Yamaguchi, Aoi Hatanaka
  • Patent number: 10408864
    Abstract: A voltage measuring apparatus that individually measures voltages of n-pieces (2?n) of power storage elements B(1) to B(n) connected in series includes: first to n-th voltage detecting units that respectively individually measure voltages of the power storage elements; a switching circuit that switches a connection state between the power storage elements and the first to n-th voltage detecting units; a SW control unit that drives the switching circuit; and an operation processing unit. The power storage elements are arranged in order so that potential becomes higher as n increases. The switching circuit includes a capacitor connected in parallel to the power storage element B(1). In the switching circuit, the negative terminals of the power storage elements are connected to a first terminal of the capacitor via respective corresponding first switches. The positive terminals of the power storage elements are connected to a second terminal of the capacitor via respective corresponding second switches.
    Type: Grant
    Filed: June 29, 2016
    Date of Patent: September 10, 2019
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Youhei Yamaguchi, Tomomi Kataoka, Keiichi Kawano, Takahiro Matsuura, Hiroaki Takechi
  • Publication number: 20180306845
    Abstract: A voltage measuring apparatus that individually measures voltages of n-pieces (2?n) of power storage elements B(1) to B(n) connected in series includes: first to n-th voltage detecting units that respectively individually measure voltages of the power storage elements; a switching circuit that switches a connection state between the power storage elements and the first to n-th voltage detecting units; a SW control unit that drives the switching circuit; and an operation processing unit. The power storage elements are arranged in order so that potential becomes higher as n increases. The switching circuit includes a capacitor connected in parallel to the power storage element B(1). In the switching circuit, the negative terminals of the power storage elements are connected to a first terminal of the capacitor via respective corresponding first switches. The positive terminals of the power storage elements are connected to a second terminal of the capacitor via respective corresponding second switches.
    Type: Application
    Filed: June 29, 2016
    Publication date: October 25, 2018
    Inventors: Youhei Yamaguchi, Tomomi Kataoka, Keiichi Kawano, Takahiro Matsuura, Hiroaki Takechi
  • Publication number: 20180252776
    Abstract: An internal resistance calculation device is provided with: a voltage obtaining portion that obtains the voltage of a secondary battery; a current obtaining portion that obtains the current of the secondary battery; a switching determination portion that determines the presence or absence of switching between charging and discharging of the secondary battery based on the obtained current; an identification portion that identifies a waiting time based on a boundary frequency range in which the diffusion impedance arising from the process of diffusion of a predetermined ion contributes to the impedance of the secondary battery in the impedance spectrum of the secondary battery; and a resistance calculation portion that calculates the internal resistance of the secondary battery based on the voltage and the current obtained after the identified waiting time in a case where it is determined that switching between charging and discharging of the secondary battery is present.
    Type: Application
    Filed: June 23, 2016
    Publication date: September 6, 2018
    Inventors: Hiroaki Takechi, Tomomi Kataoka, Youhei Yamaguchi, Aoi Hatanaka