Patents by Inventor Yosuke MUROTA

Yosuke MUROTA 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).

  • Battery system and method of controlling battery system
    Patent number: 11884180
    Abstract: A battery system includes a nickel-metal hydride battery and an ECU that controls charging and discharging of the nickel-metal hydride battery. The ECU calculates a discharge electricity amount showing an integrated value of a current discharged from the nickel-metal hydride battery, and further calculates ?SOC of the nickel-metal hydride battery in a prescribed time period. The ECU calculates a charge reserve capacity of the nickel-metal hydride battery based on a temperature of the nickel-metal hydride battery, the discharge electricity amount, and the ?SOC.
    Type: Grant
    Filed: February 24, 2021
    Date of Patent: January 30, 2024
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, PRIMEARTH EV ENERGY CO., LTD.
    Inventors: Takayuki Irie, Jun Satoh, Junichi Matsumoto, Daisuke Koba, Yosuke Murota, Kazuki Nakano, Suguru Muraki
  • BATTERY SYSTEM AND METHOD OF CONTROLLING BATTERY SYSTEM
    Publication number: 20210276451
    Abstract: A battery system includes a nickel-metal hydride battery and an ECU that controls charging and discharging of the nickel-metal hydride battery. The ECU calculates a discharge electricity amount showing an integrated value of a current discharged from the nickel-metal hydride battery, and further calculates ?SOC of the nickel-metal hydride battery in a prescribed time period. The ECU calculates a charge reserve capacity of the nickel-metal hydride battery based on a temperature of the nickel-metal hydride battery, the discharge electricity amount, and the ?SOC.
    Type: Application
    Filed: February 24, 2021
    Publication date: September 9, 2021
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, PRIMEARTH EV ENERGY CO., LTD.
    Inventors: Takayuki IRIE, Jun SATOH, Junichi MATSUMOTO, Daisuke KOBA, Yosuke MUROTA, Kazuki NAKANO, Suguru MURAKI
  • Battery state estimation device and battery state estimation method
    Patent number: 10976372
    Abstract: A battery state estimation device for estimating a charged electric charge quantity of a rechargeable battery includes an impedance measurement unit configured to measure a plurality of complex impedances of the rechargeable battery by supplying measurement power to the rechargeable battery, a parameter calculation unit configured to calculate a parameter that includes a ratio of a difference between measurement angular velocities of two complex impedances in a diffusion region among the measured complex impedances to a difference between components of the two complex impedances, and an electric charge quantity estimation unit configured to estimate a charged electric charge quantity of the rechargeable battery based on the calculated parameter and preset correlated information between the charged electric charge quantity of the rechargeable battery and the parameter.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: April 13, 2021
    Assignee: PRIMEARTH EV ENERGY CO., LTD.
    Inventors: Daisuke Koba, Yosuke Murota, Shinobu Minatani, Hiroki Nakafuji, Daisuke Shinohara, Tetsuya Osaka
  • BATTERY STATE ESTIMATION DEVICE AND BATTERY STATE ESTIMATION METHOD
    Publication number: 20190195960
    Abstract: A battery state estimation device for estimating a charged electric charge quantity of a rechargeable battery includes an impedance measurement unit configured to measure a plurality of complex impedances of the rechargeable battery by supplying measurement power to the rechargeable battery, a parameter calculation unit configured to calculate a parameter that includes a ratio of a difference between measurement angular velocities of two complex impedances in a diffusion region among the measured complex impedances to a difference between components of the two complex impedances, and an electric charge quantity estimation unit configured to estimate a charged electric charge quantity of the rechargeable battery based on the calculated parameter and preset correlated information between the charged electric charge quantity of the rechargeable battery and the parameter.
    Type: Application
    Filed: December 21, 2018
    Publication date: June 27, 2019
    Applicant: PRIMEARTH EV ENERGY CO., LTD.
    Inventors: Daisuke KOBA, Yosuke MUROTA, Shinobu MINATANI, Hiroki NAKAFUJI, Daisuke SHINOHARA, Tetsuya OSAKA