Gs Yuasa International Ltd.

Nan Ukumori

Yuichi Ikeda

Daisuke Konishi

Katsuya Inoue

Ryosuke Takehana

In a method of controlling a flying object, from the flying objectthat includes a flying object propulsion apparatusand an energy storage apparatushaving a plurality of energy storage devicesand configured to supply electricity to the flying object propulsion apparatus, one or a plurality of the energy storage devicesare separated.

Method of controlling flying object, flying object, and computer program

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.

Energy storage system

An estimation deviceis provided with: an acquisition unitfor acquiring time-series data about an SOC of a power storage element; a specification unitfor 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 unitfor estimating a shape change of the power storage element on the basis of the specified fluctuation range and the specified representative value.

Estimation device, estimation method, and computer program

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.

Evaluation device, computer program, and evaluation method

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 devicein 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.

State estimation method and state estimation apparatus

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.

Degradation estimating device, degradation estimating method, and computer program

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.

Estimation apparatus, estimation method, and computer program

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.

Degradation estimation apparatus, computer program, and degradation estimation method

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&#x2212;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.

Estimation device, energy storage apparatus, estimation method, and computer program

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.

Storage amount estimation device, energy storage module, storage amount estimation method, and computer program

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.

Management device, energy storage module, management method, and computer program

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.

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.

Abnormality factor determination apparatus, degradation determination apparatus, computer program, degradation determining method, and abnormality factor determining method

A storage amount estimation device is provided that can estimate a storage amount of an energy storage device containing an active material in which a storage amount-voltage characteristic exhibits a hysteresis, an energy storage module including the storage amount estimation device, a storage amount estimation method, and a computer program. An energy storage device contains an active material exhibiting hysteresis between a storage amount-voltage charge characteristic and a storage amount-voltage discharge characteristic in a positive electrode and/or a negative electrode, the active material generating a plurality of electrochemical reactions according to transition of charge-discharge. A BMU includes an acquisition unit that acquires a storage amount-voltage charge characteristic for reference and/or a storage amount-voltage discharge characteristic for reference based on the first characteristic, the second characteristic, and voltage history of the charge-discharge and an estimation unit that estimates the storage amount based on the voltage history of the charge-discharge, the third characteristic and/or the fourth characteristic, and the acquired voltage.

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Kyoto, Japan

Nan Ukumori