Kabushiki Kaisha Toshiba

Toshiba Energy Systems & Solutions Corporation

Masatake Sakuma

Takahiro Yamamoto

Takenori Kobayashi

Kenichi Fujiwara

Hisaaki Hatano

Ryosuke Takeuchi

Tomohiro Toyosaki

Shinichiro Kosugi

Takahisa Wada

Kenji Mitsumoto

Yasuhiro Ogura

Kohei Maruchi

Satoshi Ito

Tomokazu Morita

Yuichi Komano

Hideyuki Aisu

Masahiro Sekino

Kaoru Koiwa

Shinji Yamanaka

Tomoshi Otsuki

Taichi Isogai

Kenichiro Furuta

Toru Ezawa

Yoshiyuki Sakamoto

Masayuki Hoshino

Sayaka Akiyama

Hiroaki Sakurai

According to one embodiment, the information processing device includes: a first state estimator configured to estimate a state of a target rechargeable battery based on: first data including a charge amount and voltage value of a rechargeable battery; information including a state of the rechargeable battery; and second data including a charge amount and voltage value of the rechargeable battery.

Information processing device, information processing method, non-transitory computer readable medium, and information processing system

An apparatus as an aspect of the present invention is a factor analysis apparatus that analyzes a relationship between a target event that is a target of factor analysis and an assumed factor of the target event, and includes a similarity calculator, a first influence calculator, and a second influence calculator. The similarity calculator calculates a degree of similarity between a data item included in provided time-series data and the assumed factor. The first influence calculator calculates a first degree of influence indicating a degree of influence of the data item on the target event on the basis of time-series data of the data item and time-series data of the target event. The second influence calculator calculates a second degree of influence indicating a degree of influence of the assumed factor on the target event on the basis of the degree of similarity and the first degree of influence.

Factor analysis apparatus, factor analysis method, and non-transitory storage medium

According to one embodiment, an evaluation device for an energy storage device includes first processing circuitry and second processing circuitry. The first processing circuitry acquires data items including an amount of charge and a voltage value measured in a measurement period from the energy storage device, the energy storage device being charge-discharge-controlled according to charge-discharge command values. The second processing circuitry generates a representative data item of voltage values for amounts of charge, based on the data items acquired for the measurement period; and evaluates a degradation state of the energy storage device, based on a relative change between a plurality of the representative data items corresponding to a plurality of the measurement periods.

Evaluation device, evaluation method and evaluation system for energy storage device

According to one embodiment, an evaluation device includes first processing circuitry and second processing circuitry. The first processing circuitry calculates a feature value of an energy storage device based on voltage values measured from the energy storage device being subjected to charge-discharge-control according to charge-discharge command values. The second processing circuitry derives an evaluation function of a degradation state of the energy storage device according to a difference between a distribution of the charge-discharge command values and a reference distribution. The second processing circuitry evaluates the degradation state of the energy storage device, based on the evaluation function and the calculated feature value.

Evaluation device, energy storage system, evaluation method and non-transitory computer readable medium

According to one embodiment, a device for evaluating an energy storage device includes first processing circuitry and second processing circuitry. The first processing circuitry detects a plurality of times at which an amount of charge of the energy storage device satisfies a threshold condition, based on measurement data on the energy storage device in operation, selects a plurality of time intervals, calculates a charge-discharge efficiency in each of the time intervals based on charge-discharge command values belonging to the time interval, and divides a set of the charge-discharge efficiencies into a plurality of clusters and generates characteristic information on the clusters based on at least one of the measurement data and the charge-discharge command values. The second processing circuitry generates output data for displaying: transition data indicating transition of the charge-discharge efficiency belonging to the cluster; and characteristic information on the cluster.

Device and method for evaluating energy storage device and evaluation system

According to one embodiment, a storage battery evaluation device includes a charging/discharging controller and a deterioration evaluator. The charging/discharging controller acquires a charging/discharging power command value, performs control to charge and discharge an energy storage device according to the charging/discharging power command value, sets a dead zone in which the charging and discharging is not performed when an absolute value of the charging/discharging power command value is equal to or smaller than a threshold, and performs control to stop the charging and discharging when the charging/discharging command value enters the dead zone. The deterioration evaluator measures a response characteristic of a voltage of the energy storage device at a time when the charging and discharging is stopped from a state in which the energy storage device is charged and discharged and evaluates a deterioration state of the energy storage device on a basis of the response characteristic.

Storage battery evaluation device, energy storage system, and storage battery evaluation method

In one embodiment, a temperature management device is provided with a plurality of battery cells, power sensor(s) each of which detects the charge/discharge power of battery cell(s) at a prescribed time interval, a power representative value calculation section which calculates a power representative value of a time lapse data of the charge/discharge power(s) detected by the power sensor, temperature sensor(s) each of which detects the temperature of battery cell(s) at a prescribed time interval, a temperature representative value calculation section which calculates a temperature representative value of a time lapse data of temperature(s) detected by the temperature sensor, a radiation characteristic identification section which identifies a radiation characteristic from the temperature representative value and the power representative value, and an air conditioning setting calculation section which calculates an air conditioning setting for the battery cell(s) corresponding to the power representative value by using the radiation characteristic.

Battery temperature management device

According to one embodiment, a storage-battery evaluation device includes: a data generator and a deterioration evaluator. The data generator generates a plurality of data items including charge amounts and voltage values of an energy storage device based on current values and the voltage values measured from the energy storage device, the energy storage device being subjected to charge/discharge control in accordance with charge/discharge command values. The deterioration evaluator evaluates a deterioration state of the energy storage device based on a distribution of the voltage values included in the data items the charge amounts of which belong to a first charge-amount range when it is detected that a distribution of first charge/discharge command values satisfies a predetermined condition, the first charge/discharge command values being the charge/discharge command values at which the data items the charge amounts of which belong to the first charge-amount range is obtained.

Storage-battery evaluation device, energy storage system, and storage-battery evaluation method

According to one embodiment, a simulation-signal generation device includes a charge/discharge-condition acquirer to acquire a charge/discharge condition of an energy-storage system; a signal-characteristic-amount acquirer to acquire a plurality of charge/discharge-signal characteristic amounts for the energy-storage system; a characteristic-signal generation processor to generate a plurality of characteristic signals respectively having the plurality of charge/discharge signal characteristic amounts, based on the plurality of charge/discharge signal characteristic amounts; and a simulation-signal generator to synthesize the plurality of characteristic signals to generate a simulation signal serving as a command signal of charge/discharge for the energy-storage system.

Device for generating a simulation-signal serving as a command signal of charge/discharge for an energy-storage system, method for generating the simulation signal, and non-transitory computer readable medium

According to one embodiment, there is provided a battery apparatus including a battery management device configured to receive voltages and temperatures of cells, and detection data of a current sensor, and a measuring computer configured to calculate a characteristic value of each cell or cell module, based on the detection data acquired from the battery management device at first time intervals, and to send, the acquired detection data or the calculated characteristic value to a control device at second time intervals which are longer than the first time intervals.

Battery apparatus and battery system

An example information processing device includes first and second receiving units, a deciding unit, and first and second transmitting units. The first receiving unit receives adjustment limit information from a plurality of first external devices. The deciding unit determines adjustment rules on the basis of the adjustment limit information. The first transmitting unit transmits the adjustment rules to second and third external devices. The second receiving unit receives determination information from a fourth external device. The second transmitting unit transmits the adjustment rules to the first external devices when integrated schedule information satisfies a condition. When the integrated schedule information does not satisfy the condition, the deciding unit changes the adjustment rules. When the deciding unit has changed the adjustment rules, the first transmitting unit transmits new adjustment rules to the second and third external devices.

Growing community of inventors

Kiyose, Japan

Masatake Sakuma