Patents by Inventor Nan UKUMORI

Nan UKUMORI 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).

  • Publication number: 20230249850
    Abstract: In a method of controlling a flying object 1, from the flying object 1 that includes a flying object propulsion apparatus 16 and an energy storage apparatus 7, 8 having a plurality of energy storage devices 6 and configured to supply electricity to the flying object propulsion apparatus 16, one or a plurality of the energy storage devices 6 are separated.
    Type: Application
    Filed: April 6, 2021
    Publication date: August 10, 2023
    Inventors: Nan UKUMORI, Daisuke KONISHI
  • Publication number: 20230150680
    Abstract: An energy storage system used in a flight vehicle includes: a plurality of energy storage apparatuses; and a power transfer circuit that is connected to the plurality of energy storage apparatuses and transfer electric power between the plurality of energy storage apparatuses.
    Type: Application
    Filed: April 6, 2021
    Publication date: May 18, 2023
    Inventors: Nan UKUMORI, Daisuke KONISHI
  • Patent number: 11635467
    Abstract: This evaluation device comprises: a mathematical model acquisition unit that acquires a mathematical model expressing the state of a power storage element; an operation data acquisition unit that acquires operation data which includes time-series input data input during operation of a system constructed on the basis of the numerical model, and time-series output data output by the system on the basis of the time-series input data; a processing unit that inputs the time-series input data to the numerical model and executes processing causing time-series model output data to be output from the numerical model; and an evaluation unit that evaluates the design and the operation of the system on the basis of the time-series output data and the time-series model output data.
    Type: Grant
    Filed: November 17, 2020
    Date of Patent: April 25, 2023
    Assignee: GS YUASA INTERNATIONAL LTD.
    Inventor: Nan Ukumori
  • Patent number: 11619674
    Abstract: A state estimation method for an energy storage device includes: acquiring, by a first method, a first probability distribution that expresses the state of the energy storage device 61 in the form of a probability distribution; acquiring, by a second method, a second probability distribution that expresses the state of the energy storage device in the form of a probability distribution; and estimating the state of the energy storage device on the basis of the first probability distribution and the second probability distribution.
    Type: Grant
    Filed: June 19, 2019
    Date of Patent: April 4, 2023
    Assignee: GS YUASA INTERNATIONAL LTD.
    Inventor: Nan Ukumori
  • Publication number: 20220381831
    Abstract: This evaluation device comprises: a mathematical model acquisition unit that acquires a mathematical model expressing the state of a power storage element; an operation data acquisition unit that acquires operation data which includes time-series input data input during operation of a system constructed on the basis of the numerical model, and time-series output data output by the system on the basis of the time-series input data; a processing unit that inputs the time-series input data to the numerical model and executes processing causing time-series model output data to be output from the numerical model; and an evaluation unit that evaluates the design and the operation of the system on the basis of the time-series output data and the time-series model output data.
    Type: Application
    Filed: November 17, 2020
    Publication date: December 1, 2022
    Inventor: Nan UKUMORI
  • Publication number: 20220373608
    Abstract: An estimation device 4 is provided with: an acquisition unit 41 for acquiring time-series data about an SOC of a power storage element; a specification unit 41 for specifying a fluctuation range of the SOC in the time-series data and an SOC representative value representing an SOC region in the fluctuation range; and an estimation unit 41 for estimating a shape change of the power storage element on the basis of the specified fluctuation range and the specified representative value.
    Type: Application
    Filed: September 30, 2020
    Publication date: November 24, 2022
    Inventors: Ryosuke TAKEHANA, Nan UKUMORI
  • Patent number: 11428747
    Abstract: A degradation estimating device includes: an acquiring unit that acquires time-series data of an SOC in an energy storage device; and an estimating unit that estimates degradation of the energy storage device based on a fluctuation magnitude of the SOC in the time-series data acquired by the acquiring unit. The degradation estimating method of an energy storage device acquires time-series data of an SOC in the energy storage device, and estimates the degradation of the energy storage device based on a fluctuation magnitude of the SOC in the acquired time-series data.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: August 30, 2022
    Assignee: GS YUASA INTERNATIONAL LTD.
    Inventor: Nan Ukumori
  • Publication number: 20220252675
    Abstract: The estimation device 101 is provided with: an acquisition unit 201 for acquiring time-series data on the SOC of a power storage device; a decomposition unit 202 for decomposing a waveform indicating a fluctuation in the SOC in the time-series data into waveform components of a plurality of frequency regions; and an estimation unit 204 for estimating the deterioration of the power storage device on the basis of the intensities of the waveform components and a deterioration coefficient.
    Type: Application
    Filed: May 21, 2020
    Publication date: August 11, 2022
    Inventor: Nan UKUMORI
  • Patent number: 11402435
    Abstract: The estimation device 101 is provided with: an acquisition unit 201 for acquiring time-series data on the SOC of a power storage device; a decomposition unit 202 for decomposing a waveform indicating a fluctuation in the SOC in the time-series data into waveform components of a plurality of frequency regions; and an estimation unit 204 for estimating the deterioration of the power storage device on the basis of the intensities of the waveform components and a deterioration coefficient.
    Type: Grant
    Filed: May 21, 2020
    Date of Patent: August 2, 2022
    Assignee: GS YUASA INTERNATIONAL LTD.
    Inventor: Nan Ukumori
  • Publication number: 20220041078
    Abstract: Provided are an energy storage device evaluation device, a computer program, an energy storage device evaluation method, a learning method, and a generation method capable of optimally distributing a load in consideration of degradation of the energy storage device. The energy storage device evaluation device includes an action selection unit that selects an action including a change in the load state of the energy storage device based on action evaluation information, a state acquisition unit that acquires a state of the energy storage device when the selected action is executed, a reward acquisition unit that acquires a reward when the selected action is executed, an update unit that updates the action evaluation information based on the acquired state and reward, and an evaluation unit that evaluates the state of the energy storage device by executing the action based on the updated action evaluation information.
    Type: Application
    Filed: October 31, 2019
    Publication date: February 10, 2022
    Inventor: Nan UKUMORI
  • Patent number: 11243262
    Abstract: This deterioration estimation device is provided with: an SOH acquisition unit which acquires the SOH of a power storage element at a first time and the SOH at a second time after the first time; and a learning processing unit which trains a learning model on the basis of learning data which, as input data, includes time series data relating to the state of the power storage element from the first time to the second time, and the SOH at the first time and, as output data, includes the SOH at the second time.
    Type: Grant
    Filed: March 14, 2019
    Date of Patent: February 8, 2022
    Assignee: GS Yuasa International Ltd.
    Inventor: Nan Ukumori
  • Patent number: 11237214
    Abstract: An estimation device include: an acquisition unit that acquires information relating to a part of a third characteristic that is an energy storage amount-voltage charge characteristic and/or a fourth characteristic that is an energy storage amount-voltage discharge characteristic, of an energy storage device; a storage unit that stores a plurality of energy storage amount characteristics that are at least any of first characteristics, second characteristics, third characteristics that are energy storage amount-voltage charge characteristics, fourth characteristics that are energy storage amount-voltage discharge characteristics, and pieces of V?dQ/dV in correspondence with a change in a feature value, which is changed by repeated charge-discharge, or stores as a function of the feature value; and a first estimation unit that estimates an internal state of the energy storage device on the basis of the information and the energy storage amount characteristics.
    Type: Grant
    Filed: July 19, 2018
    Date of Patent: February 1, 2022
    Assignee: GS YUASA INTERNATIONAL LTD.
    Inventors: Nan Ukumori, Katsuya Inoue
  • Patent number: 11181584
    Abstract: A storage amount estimation device estimates the storage amount of the energy storage device in which at least one of a positive electrode and a negative electrode contains an active material, at least two electrochemical reactions being generated in the active material depending on a transition of charge-discharge, the hysteresis between a storage amount-voltage value charge characteristic and a storage amount-voltage value discharge characteristic during generation of one of the electrochemical reactions being smaller than the hysteresis during generation of the other electrochemical reaction in the active material. The storage amount estimation device includes an estimator that estimates the storage amount using a voltage reference storage amount-voltage value characteristic obtained based on the storage amount-voltage value discharge characteristic when the one electrochemical reaction is generated more than the other electrochemical reaction.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: November 23, 2021
    Assignee: GS YUASA INTERNATIONAL LTD.
    Inventors: Nan Ukumori, Yuichi Ikeda
  • Patent number: 11150303
    Abstract: A power storage element is provided that includes, in a positive electrode or a negative electrode, an active material which causes a plurality of electrochemical reactions in accordance with the process of change during charging and discharging and which exhibits hysteresis between a power storage amount-voltage charging (first) property and a power storage amount-voltage discharging (second) property. A BMU is provided with a first estimation unit which estimates a power storage amount-voltage charging property or/and a power storage amount-voltage discharging property referenced when estimating the power storage amount, on the basis of an upward voltage and a downward voltage which are respectively more than and less than a first threshold value, acquired from the first property, the second property, and the charging-discharging history.
    Type: Grant
    Filed: May 31, 2018
    Date of Patent: October 19, 2021
    Assignee: GS Yuasa International Ltd.
    Inventors: Nan Ukumori, Yuichi Ikeda
  • Publication number: 20210270904
    Abstract: A state estimation method for an energy storage device includes: acquiring, by a first method, a first probability distribution that expresses the state of the energy storage device 61 in the form of a probability distribution; acquiring, by a second method, a second probability distribution that expresses the state of the energy storage device in the form of a probability distribution; and estimating the state of the energy storage device on the basis of the first probability distribution and the second probability distribution.
    Type: Application
    Filed: June 19, 2019
    Publication date: September 2, 2021
    Inventor: Nan UKUMORI
  • Publication number: 20210255251
    Abstract: An action generator includes: an action selection unit that selects an action including setting related to a state of charge (SOC) of an energy storage device on the basis of action evaluation information; a state acquisition unit that acquires a state including a state of health (SOH) of the energy storage device when the action selected by the action selection unit is executed; a reward acquisition unit that acquires a reward in reinforcement learning when the action selected by the action selection unit is executed; an updating unit that updates the action evaluation information on the basis of the state acquired by the state acquisition unit and the reward acquired by the reward acquisition unit; and an action generation unit that generates an action corresponding to the state of the energy storage device on the basis of the action evaluation information updated by the updating unit.
    Type: Application
    Filed: June 12, 2019
    Publication date: August 19, 2021
    Inventor: Nan UKUMORI
  • Patent number: 11079440
    Abstract: A management device is provided with an acquiring unit for acquiring the amount of variation between the voltage of a power storage element when conduction of power is suspended from a state in which power is being conducted to the power storage element and the voltage when a period has elapsed, and a determination unit for determining whether the amount of variation is included in a second range that corresponds to a first range in which the voltage difference between each power storage amount-voltage characteristic during charging and discharging for the same power storage amount is less than another range.
    Type: Grant
    Filed: May 29, 2018
    Date of Patent: August 3, 2021
    Assignee: GS Yuasa International Ltd.
    Inventors: Yuichi Ikeda, Nan Ukumori
  • Patent number: 10996282
    Abstract: This abnormal factor determination device is provided with a measured value acquisition unit which acquires measured values including electric values and temperature values of multiple power storage elements, a predicted value acquisition unit which acquires predicted values including electric values and temperature values of multiple power storage elements, and a determination unit which, on the basis of the acquired measured values and predicted values, determines whether or not there are abnormal factors in the power storage system.
    Type: Grant
    Filed: March 14, 2019
    Date of Patent: May 4, 2021
    Assignee: GS Yuasa International Ltd.
    Inventor: Nan Ukumori
  • Publication number: 20210088594
    Abstract: A power storage element is provided that includes, in a positive electrode or a negative electrode, an active material which causes a plurality of electrochemical reactions in accordance with the process of change during charging and discharging and which exhibits hysteresis between a power storage amount-voltage charging (first) property and a power storage amount-voltage discharging (second) property. A BMU is provided with a first estimation unit which estimates a power storage amount-voltage charging property or/and a power storage amount-voltage discharging property referenced when estimating the power storage amount, on the basis of an upward voltage and a downward voltage which are respectively more than and less than a first threshold value, acquired from the first property, the second property, and the charging-discharging history.
    Type: Application
    Filed: May 31, 2018
    Publication date: March 25, 2021
    Inventors: Nan UKUMORI, Yuichi IKEDA
  • Publication number: 20210048482
    Abstract: This abnormal factor determination device is provided with a measured value acquisition unit which acquires measured values including electric values and temperature values of multiple power storage elements, a predicted value acquisition unit which acquires predicted values including electric values and temperature values of multiple power storage elements, and a determination unit which, on the basis of the acquired measured values and predicted values, determines whether or not there are abnormal factors in the power storage system.
    Type: Application
    Filed: March 14, 2019
    Publication date: February 18, 2021
    Inventor: Nan UKUMORI