Patents by Inventor Tohru Watanabe
Tohru Watanabe 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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Publication number: 20240146580Abstract: An estimation system generates, from a value of a time series of an estimation object in a past period, a plurality of patterns of a transition of a value of the estimation object. Based on the plurality of generated patterns and a value of a time series of a factor in the past period, the estimation system specifies a dependency relationship between a transition pattern and a value of the factor and a transition pattern at a past (or future) time point and identifies a model in accordance with the specified dependency relationship. By inputting a value of a time series of the factor in a future period to the estimation model, the estimation system specifies a time series of a value in the future period of the estimation object using at least one transition pattern.Type: ApplicationFiled: March 8, 2022Publication date: May 2, 2024Inventors: Masato UTSUMI, Tohru WATANABE, Kazuki NAMBA, Ikuo SHIGEMORI, Hiroshi IIMURA, Hiroaki OGAWA, Daisuke HAMABA, Jun YAMAZAKI
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Patent number: 11949257Abstract: A controller executes an equalization process of equalizing capacities of a plurality of cells, and a cell abnormality determination process of, of detected voltages of the plurality of cells, calculating a voltage difference between a representative voltage based on the detected voltage of at least one cell to be compared and the detected voltage of one cell to be detected at a first time and a second time, and when a difference between the two voltage differences is greater than or equal to a threshold value, determining that the cell to be detected is abnormal. In the case of executing the cell abnormality determination process during the equalization process, the controller provides the detected voltage of a target cell to be subjected to the equalization process with a compensation value corresponding to a voltage change based on energy transfer in the target cell due to the equalization process between the first time and the second time, and calculates the voltage difference at the second time.Type: GrantFiled: June 12, 2019Date of Patent: April 2, 2024Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Yusuke Itakura, Changhui Yang, Shinya Nishikawa, Tohru Watanabe
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Patent number: 11913998Abstract: Provided is a controller configured: to calculate, among voltages detected from a plurality of cells, a voltage difference between the voltage detected from one cell of the plurality of cells, the one cell to be detected, and a representative voltage at each of a first time and a second time, the representative voltage based on the voltage detected from at least one cell of the plurality of cells, the at least one cell to be compared; and when a discrepancy between the voltage difference at the first time and the voltage difference at the second time is equal to or more than a threshold, to determine that an abnormality has occurred in the one cell to be detected.Type: GrantFiled: June 12, 2019Date of Patent: February 27, 2024Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Yusuke Itakura, Changhui Yang, Shinya Nishikawa, Tohru Watanabe
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Publication number: 20240027340Abstract: An imaging device includes a camera, light sources, an optical bandpass filter, and a conversion unit. The camera includes an image sensor including a N-band color filter (where N is a natural number greater than or equal to 3). The M types of light sources (where M is a natural number that satisfies 2?M?N) have the emission spectral characteristics of having respective peaks in mutually different wavelength ranges within a visible light range and a near-infrared range. The conversion unit generates image signals of M bands each having spectral sensitivity to the corresponding one of the mutually different wavelength ranges by performing a matrix operation on an N-band imaging signal obtained by the image sensor when an article is photographed with the camera. The light application direction and the emission intensity are individually selected for each of the light sources.Type: ApplicationFiled: November 11, 2021Publication date: January 25, 2024Applicants: KABUSHIKI KAISHA N-TECH, KABUSHIKI KAISHA YAKULT HONSHA, TOHOSHOJI KABUSHIKI KAISHAInventors: Tohru Watanabe, Hideki Ota, Kunimitsu Toyoshima
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Patent number: 11862978Abstract: The power conditioner determines possible total power and working individual power to be in a range that possible individual power of each of the power supply units is not exceeded. The possible total power is determined from the possible individual power, of each of the power supply units, determined based on the battery information detected by each of the unit controllers, collected by a master controller from each of the unit controllers. The working individual power is determined based on a power deviation indicating a difference of charging and discharging power between the power supply units. The power conditioner causes charging and discharging of each of the power supply units within the calculated working individual power.Type: GrantFiled: March 10, 2017Date of Patent: January 2, 2024Assignees: PANASONIC ENERGY CO., LTD., PANASONIC HOLDINGS CORPORATIONInventors: Tohru Watanabe, Takashi Iida, Shinya Nishikawa, Kazufumi Nishikawa, Shigeyuki Yamakita
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Publication number: 20230402846Abstract: A system generates a first tree structure representing a relation of a plurality of measurement data sets, and generates goodness-of-fit data based on at least a part of attribute data regarding one or more branch portions included in the first tree structure. The attribute data includes one or more attribute values at one or more points in time regarding each of one or more attribute items. The goodness-of-fit data includes goodness-of-fit for each attribute item regarding each branch portion. With regard to each attribute item for each branch portion, goodness-of-fit is a value calculated based on a parent node and two or more child nodes belonging to the relevant branch portion, and one or more attribute values corresponding to the relevant attribute item, and represents a degree that the relevant attribute item will fit as a base of a branch condition.Type: ApplicationFiled: September 8, 2021Publication date: December 14, 2023Inventors: Kazuki NAMBA, Masato UTSUMI, Tohru WATANABE, Ikuo SHIGEMORI, Hiroshi IIMURA, Daisuke HAMABA, Dan ZHAO, Hiroaki OGAWA, Jun YAMAZAKI
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Patent number: 11808815Abstract: A voltage of a battery cell is measured, and a current flowing through the battery cell is measured. An open circuit voltage (OCV) of the battery cell is estimated based on the measured voltage, the measured current, and an equivalent circuit model based on electrochemistry of the battery cell, and a state of charge (SOC) of the battery cell is estimated based on the estimated OCV, SOC-OCV characteristics on a charge side of the battery cell, and SOC-OCV characteristics on a discharge side of the battery cell. At least one of a positive electrode and negative electrode of the battery cell is a mixed electrode containing a plurality of materials.Type: GrantFiled: November 13, 2019Date of Patent: November 7, 2023Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Shinya Nishikawa, Tohru Watanabe, Takashi Iida
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Publication number: 20230327440Abstract: A system refers to actual weather data made publicly available by a first institution, and creates a model that uses a value of a weather element for each section as an input and uses a value of a renewable energy power generation amount of the area as an output based on the actual value of the weather element calculated for each section, and the actual value of the renewable energy power generation amount of the area. The system refers to weather prediction data made publicly available by the second institution, and calculates an actual value of the weather element regarding each of the plurality of sections including the area based on a prediction value of the weather element for each segment in the corresponding section, and calculates a prediction value of the renewable energy power generation amount based on the prediction value of the weather element for each section.Type: ApplicationFiled: September 8, 2021Publication date: October 12, 2023Inventors: Tohru WATANABE, Masato UTSUMI, Ikuo SHIGEMORI, Hiroshi IIMURA, Hiroaki OGAWA, Daisuke HAMABA
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Patent number: 11772512Abstract: In a vehicle power supply system mounted on an electric vehicle, a vehicle controller switches a discharge power limit to a motor during travel of the electric vehicle according to degradation information of a battery module to which a plurality of cells are connected, the degradation information being calculated in advance before the travel of the electric vehicle. For example, the vehicle controller switches a limit of a maximum acceleration and/or maximum speed of the electric vehicle as the switching of the discharge power limit.Type: GrantFiled: February 13, 2019Date of Patent: October 3, 2023Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Makoto Hashimoto, Yohei Ishii, Tohru Watanabe, Tadao Kimura, Masaaki Takegata
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Patent number: 11593690Abstract: Provided is a data prediction system for predicting a future prediction value. The data prediction system has a data management device which manages data and a prediction operation device which models tendency of an error amount of a prediction operation result calculated on the basis of a correlation with a major explanatory variable and corrects a future prediction value. The data management device includes a storage unit which stores prediction target past measurement data observed with a time transition and explanatory factor data explaining the prediction target past measurement data.Type: GrantFiled: May 16, 2017Date of Patent: February 28, 2023Assignee: HITACHI, LTD.Inventors: Masato Utsumi, Tohru Watanabe, Ikuo Shigemori, Youko Sakikubo, Toshiyuki Sawa, Hiroshi Iimura, Hiroaki Ogawa, Yoshihisa Okamoto
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Publication number: 20230027383Abstract: A system performs factor selection processing, which includes performing a factor selection operation for selecting one or two or more factors from one or a plurality of factors; factor filtering processing which includes: determining, about each of the one or the plurality of factors before the factor selection processing is performed, whether a factor value for prediction input to a prediction model is within a range of a plurality of factor values for specimen used to identify the prediction model; and excluding a factor, a result of the determination of which is false, and outputting a factor not excluded; and prediction processing which includes calculating the prediction value of the prediction target by inputting, to the prediction model, a factor value for prediction about each of one or more factors including the factor selected in the factor selection processing and not including the factor excluded in the factor filtering processing.Type: ApplicationFiled: January 15, 2021Publication date: January 26, 2023Inventors: Masato UTSUMI, Tohru WATANABE, Ikuo SHIGEMORI, Tetsu ITO, Daisuke HAMABA, Jun YAMAZAKI
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Patent number: 11409498Abstract: A data processing system calculates prediction or planning data of an object from observation data of a calculation object of the prediction or planning data and observation data of various factors, including a first processing section which identifies a model used for calculation of the prediction or planning data of each of the factors, a second processing section which calculates data which indices the kind of a time transition of the factor from the observation data of the factor and classifies the observation data of the factor by using the calculated data which indicates the kind of the time transition, and a third processing section which changes the model for calculation of the prediction or planning data on the basis of the classified observation data and the prediction data of the factor in a prediction or planning data calculation object time period and calculates the prediction or planning data.Type: GrantFiled: November 17, 2017Date of Patent: August 9, 2022Assignee: HITACHI, LTD.Inventors: Masato Utsumi, Tohru Watanabe, Yoshihisa Okamoto, Ikuo Shigemori, Hiroshi Iimura, Hiroaki Ogawa
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Patent number: 11404899Abstract: A voltage measurer measures a voltage of a battery cell. A controller controls charging-discharging of the battery cell. The controller performs control to apply a reverse current for canceling a polarization voltage of the battery cell through the battery cell after the completion of charging-discharging of the battery cell. For example, after the charging-discharging of the battery cell completes, the controller sets a current command value, in a power converter, that instructs flow of a reverse current of a preset value for a preset time.Type: GrantFiled: February 13, 2019Date of Patent: August 2, 2022Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Shinya Nishikawa, Tohru Watanabe, Takashi Iida
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Patent number: 11329327Abstract: A managing device calculates a whole state of power (SOP) that is an SOP of a whole of the plurality of power storage blocks based on SOPs of the respective power storage blocks and currents flowing through the respective power storage blocks, and sets an upper limit value of power or a current for at least one of charging and discharging by a power converter, based on the whole SOP thus calculated. The managing device estimates a current flowing through each of the power storage blocks from a voltage and an internal resistances of each of the power storage blocks before the power converter starts power conversion.Type: GrantFiled: August 3, 2018Date of Patent: May 10, 2022Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Kazufumi Nishikawa, Shinya Nishikawa, Tohru Watanabe
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Patent number: 11277013Abstract: In a power storage system, a management device calculates a state of power (SOP) of a whole of a plurality of power storage blocks connected in parallel based on an SOP of each of the plurality of power storage blocks to specify the calculated SOP of the whole for an upper limit level of power or current for at least one of charging and discharging controlled by a power converter. When at least one of a plurality of switches is turned off to disconnect at least one (30) of the plurality of power storage blocks, the management device calculates an SOP of a whole of the remaining power storage blocks based on a deviation in current between each of the remaining power storage blocks to determine an upper limit level of power or current flowing into the power converter.Type: GrantFiled: April 26, 2018Date of Patent: March 15, 2022Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Tohru Watanabe, Kazufumi Nishikawa, Shinya Nishikawa
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Publication number: 20220026498Abstract: A voltage of a battery cell is measured, and a current flowing through the battery cell is measured. An open circuit voltage (OCV) of the battery cell is estimated based on the measured voltage, the measured current, and an equivalent circuit model based on electrochemistry of the battery cell, and a state of charge (SOC) of the battery cell is estimated based on the estimated OCV, SOC-OCV characteristics on a charge side of the battery cell, and SOC-OCV characteristics on a discharge side of the battery cell. At least one of a positive electrode and negative electrode of the battery cell is a mixed electrode containing a plurality of materials.Type: ApplicationFiled: November 13, 2019Publication date: January 27, 2022Inventors: SHINYA NISHIKAWA, TOHRU WATANABE, TAKASHI IIDA
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Publication number: 20220026497Abstract: A voltage of a battery cell is measured, and a current flowing through the battery cell is measured. An open circuit voltage (OCV) of the battery cell is estimated based on the measured voltage, the measured current, and an equivalent circuit model based on electrochemistry of the battery cell. At least one of a positive electrode and negative electrode of the battery cell is a mixed electrode containing a plurality of materials. The equivalent circuit model is a model including a diffusion resistance component for each of the plurality of materials for use in the positive electrode and the negative electrode.Type: ApplicationFiled: November 13, 2019Publication date: January 27, 2022Inventors: SHINYA NISHIKAWA, TAKASHI IIDA, TOHRU WATANABE
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Publication number: 20210339650Abstract: In a vehicle power supply system mounted on an electric vehicle, a vehicle controller switches a discharge power limit to a motor during travel of the electric vehicle according to degradation information of a battery module to which a plurality of cells are connected, the degradation information being calculated in advance before the travel of the electric vehicle. For example, the vehicle controller switches a limit of a maximum acceleration and/or maximum speed of the electric vehicle as the switching of the discharge power limit.Type: ApplicationFiled: February 13, 2019Publication date: November 4, 2021Inventors: MAKOTO HASHIMOTO, YOHEI ISHII, TOHRU WATANABE, TADAO KIMURA, MASAAKI TAKEGATA
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Publication number: 20210336436Abstract: A trading planning apparatus includes an order quantity planning section determining trading quantities with a plurality of trade connections from a trading cumulative quantity and estimated data about future quantities related to demand and the trade connections, a split-time-based split order planning section generating trading and ordering data containing data about an order price or an order quantity related to trading and ordering in each of planned trading periods that are periods into which a trading period, during which trading can be conducted, is subdivided, and a future quantity estimation section estimating estimated quantities of data related to errors in the future quantities estimated from actual record values, the order quantity planning section increasing or reducing the trading quantity of any of the trade connections when a difference between a sum of the trading quantities of all of the trade connections and a future quantity demanded is equal to or greater than a predetermined value.Type: ApplicationFiled: July 8, 2021Publication date: October 28, 2021Inventors: Tohru Watanabe, Masato Utsumi, Yu Ikemoto, Yoshihisa Okamoto, lkuo Shigemori, Hiroshi Iimura, Hiroaki Ogawa
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Publication number: 20210318386Abstract: Provided is a controller configured: to calculate, among voltages detected from a plurality of cells, a voltage difference between the voltage detected from one cell of the plurality of cells, the one cell to be detected, and a representative voltage at each of a first time and a second time, the representative voltage based on the voltage detected from at least one cell of the plurality of cells, the at least one cell to be compared; and when a discrepancy between the voltage difference at the first time and the voltage difference at the second time is equal to or more than a threshold, to determine that an abnormality has occurred in the one cell to be detected.Type: ApplicationFiled: June 12, 2019Publication date: October 14, 2021Inventors: YUSUKE ITAKURA, CHANGHUI YANG, SHINYA NISHIKAWA, TOHRU WATANABE