Patents by Inventor Masatake Sakuma
Masatake Sakuma 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).
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Patent number: 11921162Abstract: 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.Type: GrantFiled: September 8, 2021Date of Patent: March 5, 2024Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Hisaaki Hatano, Takahiro Yamamoto, Kohei Maruchi, Kenichi Fujiwara, Masatake Sakuma
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Patent number: 11379493Abstract: 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.Type: GrantFiled: February 20, 2018Date of Patent: July 5, 2022Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Sayaka Akiyama, Kohei Maruchi, Masatake Sakuma
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Patent number: 11300625Abstract: 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.Type: GrantFiled: September 11, 2019Date of Patent: April 12, 2022Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATIONInventors: Takahiro Yamamoto, Hisaaki Hatano, Kenichi Fujiwara, Masatake Sakuma, Kaoru Koiwa, Yasuhiro Ogura, Takenori Kobayashi, Kenji Mitsumoto
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Patent number: 11221367Abstract: 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.Type: GrantFiled: September 11, 2019Date of Patent: January 11, 2022Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Takahiro Yamamoto, Hisaaki Hatano, Masatake Sakuma, Kenichi Fujiwara, Takenori Kobayashi, Tomohiro Toyosaki, Yoshiyuki Sakamoto
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Publication number: 20210405120Abstract: 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 includes 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.Type: ApplicationFiled: September 8, 2021Publication date: December 30, 2021Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Hisaaki HATANO, Takahiro YAMAMOTO, Kohei MARUCHI, Kenichi FUJIWARA, Masatake SAKUMA
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Patent number: 11099240Abstract: 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.Type: GrantFiled: September 11, 2019Date of Patent: August 24, 2021Assignees: Kabushiki Kaisha Toshiba, Toshiba Energy Systems & Solutions CorporationInventors: Hisaaki Hatano, Takahiro Yamamoto, Kenichi Fujiwara, Masatake Sakuma, Takenori Kobayashi, Yasuhiro Ogura, Kenji Mitsumoto
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Patent number: 10845421Abstract: 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.Type: GrantFiled: February 28, 2018Date of Patent: November 24, 2020Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Takahiro Yamamoto, Takenori Kobayashi, Masatake Sakuma, Ryosuke Takeuchi, Takahisa Wada
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Publication number: 20200233037Abstract: 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.Type: ApplicationFiled: September 11, 2019Publication date: July 23, 2020Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATIONInventors: Takahiro YAMAMOTO, Hisaaki Tatano, Kenichi Fujiwara, Masatake Sakuma, Kaoru Koiwa, Yasuhiro Ogura, Takenori Kobayashi, Kenji Mitsumoto
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Publication number: 20200217896Abstract: 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.Type: ApplicationFiled: September 11, 2019Publication date: July 9, 2020Applicants: Kabushiki Kaisha Toshiba, Toshiba Energy Systems & Solutions CorporationInventors: Hisaaki Hatano, Takahiro Yamamoto, Kenichi Fujiwara, Masatake Sakuma, Takenori Kobayashi, Yasuhiro Ogura, Kenji Mitsumoto
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Patent number: 10573941Abstract: 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 valueType: GrantFiled: August 30, 2017Date of Patent: February 25, 2020Assignee: Kabushiki Kaisha ToshibaInventors: Kenichi Fujiwara, Takahiro Yamamoto, Ryosuke Takeuchi, Masatake Sakuma, Tomohiro Toyosaki, Takenori Kobayashi
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Publication number: 20200003839Abstract: 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.Type: ApplicationFiled: September 11, 2019Publication date: January 2, 2020Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Takahiro YAMAMOTO, Hisaaki HATANO, Masatake SAKUMA, Kenichi FUJIWARA, Takenori KOBAYASHI, Tomohiro TOYOSAKI, Yoshiyuki SAKAMOTO
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Patent number: 10372183Abstract: 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.Type: GrantFiled: March 9, 2016Date of Patent: August 6, 2019Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Takahiro Yamamoto, Shinichiro Kosugi, Ryosuke Takeuchi, Masatake Sakuma, Takahisa Wada, Toru Ezawa, Takenori Kobayashi
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Patent number: 10310018Abstract: 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.Type: GrantFiled: March 8, 2016Date of Patent: June 4, 2019Assignee: Kabushiki Kaisha ToshibaInventors: Masatake Sakuma, Takahiro Yamamoto, Takenori Kobayashi
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Publication number: 20190050460Abstract: 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.Type: ApplicationFiled: February 20, 2018Publication date: February 14, 2019Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Sayaka AKIYAMA, Kohei Maruchi, Masatake Sakuma
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Publication number: 20180269546Abstract: 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 valueType: ApplicationFiled: August 30, 2017Publication date: September 20, 2018Applicant: Kabushiki Kaisha ToshibaInventors: Kenichi Fujiwara, Takahiro Yamamoto, Ryosuke Takeuchi, Masatake Sakuma, Tomohiro Toyosaki, Takenori Kobayashi
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Publication number: 20180188330Abstract: 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.Type: ApplicationFiled: February 28, 2018Publication date: July 5, 2018Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Takahiro YAMAMOTO, Takenori Kobayashi, Masatake Sakuma, Ryosuke Takeuchi, Takahisa Wada
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Patent number: 9885760Abstract: 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.Type: GrantFiled: March 11, 2016Date of Patent: February 6, 2018Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Shinichiro Kosugi, Masahiro Sekino, Masayuki Hoshino, Hiroaki Sakurai, Tomokazu Morita, Takenori Kobayashi, Tomohiro Toyosaki, Masatake Sakuma, Takahiro Yamamoto
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Publication number: 20170139014Abstract: According to one embodiment, an energy storage battery includes: a plurality of cells; an acquirer to acquire measured values of state amounts of the cells; a first parameter calculator to calculate first parameters for evaluating the cells, based on the measured values; and a communicator to transmit the first parameters to a monitoring controller via a communication network.Type: ApplicationFiled: January 31, 2017Publication date: May 18, 2017Inventors: Takahiro YAMAMOTO, Masatake SAKUMA, Takenori KOBAYASHI, Shinichiro KOSUGI, Mami MIZUTANI, Yasuji SAKATA, Toshiro SHIMADA
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Publication number: 20170031404Abstract: 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.Type: ApplicationFiled: March 9, 2016Publication date: February 2, 2017Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Takahiro YAMAMOTO, Shinichiro Kosugi, Ryosuke Takeuchi, Masatake Sakuma, Takahisa Wada, Toru Ezawa, Takenori Kobayashi
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Publication number: 20160370432Abstract: 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.Type: ApplicationFiled: March 8, 2016Publication date: December 22, 2016Inventors: Masatake SAKUMA, Takahiro YAMAMOTO, Takenori KOBAYASHI