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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Patent number: 12289184Abstract: 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: GrantFiled: March 8, 2022Date of Patent: April 29, 2025Assignee: HITACHI, LTD.Inventors: Masato Utsumi, Tohru Watanabe, Kazuki Namba, Ikuo Shigemori, Hiroshi Iimura, Hiroaki Ogawa, Daisuke Hamaba, Jun Yamazaki
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Publication number: 20250035561Abstract: An imaging device includes two cameras capturing transmission images of an article from opposite directions, a first light source emitting light that is transmitted through the article in a first direction, and a second light source emitting light that is transmitted through the article in a second direction. The first camera captures a first image that is a transmission image of the article. The second camera captures a second image that is a transmission image of the article. The first half mirror reflects first transmitted light toward the first camera while the second light source is turned off, and permits transmission of light traveling from the second light source toward the article. The second half mirror reflects second transmitted light toward the second camera while the first light source is turned off, and also permits transmission of light traveling from the first light source toward the article.Type: ApplicationFiled: November 28, 2022Publication date: January 30, 2025Inventors: Tohru Watanabe, Yu Yoshida, Kunimitsu Toyoshima
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Patent number: 12072387Abstract: 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: GrantFiled: November 13, 2019Date of Patent: August 27, 2024Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Shinya Nishikawa, Takashi Iida, Tohru Watanabe
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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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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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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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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: 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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Patent number: 11118662Abstract: A lock-up device for a torque converter transmitting a torque from a front cover to a transmission-side member is disclosed. The lock-up device includes a clutch part, a piston, and a return mechanism. The piston is axially opposed to the front cover through the clutch part. The piston is axially movable and applies a pressing force to the clutch part whereby the clutch part is turned to an activated state. The return mechanism urges the piston away from the front cover. The return mechanism is disposed axially between the front cover and the piston while disposed radially inside the clutch part. The return mechanism includes first and second plates, and an elastic member. The first plate contacts the front cover. The second plate contacts the piston while axially opposed to the first plate. The elastic member is disposed between the first and second plates in a compressed state.Type: GrantFiled: December 11, 2019Date of Patent: September 14, 2021Assignee: EXEDY CORPORATIONInventors: Tohru Watanabe, Mitsuhiro Sasaki
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Patent number: 11107094Abstract: Provided is a prediction system for calculating a prediction value related to a prediction target to which prediction in an arbitrary period is adapted. The prediction system includes a storage device which records a plurality of data used to calculate the prediction value and a control device which includes a predetermined operation model and applies the plurality of data to the operation model to calculate the prediction value. The control device changes the operation model, on the basis of information of respective temporal attributes of the plurality of data.Type: GrantFiled: November 15, 2017Date of Patent: August 31, 2021Assignee: Hitachi, Ltd.Inventors: Masato Utsumi, Tohru Watanabe, Ikuo Shigemori, Hiroshi Iimura, Hiroaki Ogawa
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Patent number: 11043821Abstract: 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. At least one of the plurality of power storage blocks is disconnected from the power storage system, and when at least one switch is turned on to return at least one disconnected power storage block to the power storage system having the parallel-connected power storage blocks, the management device calculates an SOP of a whole of the power storage blocks after a return of the at least one power storage block based on a deviation in current between each of the power storage blocks including the at least one returned power storage block to determine an upper limit level of power or current flowing into a power converter.Type: GrantFiled: April 26, 2018Date of Patent: June 22, 2021Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Shinya Nishikawa, Kazufumi Nishikawa, Tohru Watanabe
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Patent number: 10949699Abstract: An input apparatus performs character recognition on trajectory data that is input by handwriting, determines whether or not an order of recognized characters complies with a rule on mathematical representations, and if it is determined that the recognized characters, except for a first character at any position in a sequence of the characters, comply with the rule, replaces the first character with a second character that complies with the rule.Type: GrantFiled: March 20, 2019Date of Patent: March 16, 2021Assignee: CASIO COMPUTER CO., LTD.Inventor: Tohru Watanabe
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Patent number: 10846715Abstract: An energy operation system, apparatus, and method capable of stably supplying energy and providing adjustment control based on prediction precision and planning precision for energy supply and demand. An energy operation apparatus includes a demand predictor, planner, evaluator, and solution quality controller. The demand predictor predicts demand and/or a power generation amount of future energy in a management area. The planner prepares a future energy supply plan in the management area based on a prediction. The evaluator evaluates supply and/or demand conditions including at least one of future weather in the management area, energy demand in the management area, a demand density and/or a generation density of future energy in the management area. The solution quality controller controls the quality of at least one of a prediction solution of the demand predictor and the energy supply plan of the planner based on an evaluation result from the evaluator.Type: GrantFiled: March 11, 2019Date of Patent: November 24, 2020Assignee: HITACHI, LTD.Inventors: Tohru Watanabe, Isao Hagiya, Masamichi Nakamura, Yu Ikemoto, Masato Utsumi, Masashi Fukaya, Jyunpei Ogawa, Hiroaki Ogawa, Ikuo Shigemori, Hiroshi Iimura