Patents by Inventor Masato Nakayama

Masato Nakayama 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).

  • Publication number: 20220355669
    Abstract: In earth leakage detection device, one end of coupling capacitor is connected to a current path of power storage unit connected to load in a state of being insulated from the ground. Voltage output unit generates a periodically changing periodic voltage, and applies the periodic voltage to the other end of coupling capacitor via first resistor. Second resistor and third resistor are connected in series between a node between coupling capacitor and first resistor and a predetermined fixed potential. Voltage measurement unit measures a voltage at a voltage dividing point between second resistor and third resistor. Earth leakage determination unit determines presence or absence of an earth leakage between the current path of power storage unit and the ground based on the measured voltage.
    Type: Application
    Filed: June 15, 2020
    Publication date: November 10, 2022
    Inventor: MASATO NAKAYAMA
  • Publication number: 20220357409
    Abstract: An earth leakage detecting device comprises following elements. A first end of coupling capacitor is connected to a current path of power storage connected to load in a state of being insulated from a ground. Voltage output unit generates a periodic voltage that changes periodically, and applies the periodic voltage to a second end of coupling capacitor via impedance element. Voltage measurer measures a voltage at a connection point between coupling capacitor and impedance element. Earth leakage determiner determines presence or absence of an earth leakage between the current path of power storage and the ground on the basis of the measured voltage. Voltage output unit has a preparation period for constantly outputting a potential between a high-side potential and a low-side potential of the periodic voltage before a measurement period for outputting the periodic voltage.
    Type: Application
    Filed: June 15, 2020
    Publication date: November 10, 2022
    Inventors: MASATO NAKAYAMA, TOMONORI KUNIMITSU, TAISUKE HAMADA, JUN ASAKURA
  • Patent number: 11495977
    Abstract: In order to detect a cell voltage with high accuracy during an equalizing process among a plurality of cells, during execution of the equalizing process among the plurality of cells, controller measures a value of a current flowing to a negative electrode of an nth cell through an nth discharge resistor, calculates an (n?1)th voltage drop value due to a wiring resistance value of an (n?1)th wiring and an nth voltage drop value due to a wiring resistance value of an nth wiring based on the measured current value, and the wiring resistance value of the (n?1)th wiring connected to a positive electrode of the nth cell and a wiring resistance value of the nth wiring connected to the negative electrode of the nth cell, the wiring resistance value of the (n?1)th wiring and the wiring resistance value of the nth wiring being measured in advance, and, based on the (n?1)th voltage drop value and the nth voltage drop value, corrects the voltage value of the nth cell, a voltage value of an (n?1)th cell, and a voltage val
    Type: Grant
    Filed: April 5, 2019
    Date of Patent: November 8, 2022
    Assignee: SANYO Electric Co., Ltd.
    Inventor: Masato Nakayama
  • Patent number: 11489347
    Abstract: A voltage measurement unit measures voltages of the plurality of cells connected in series. A plurality of discharge circuits are connected in parallel to the plurality of cells, respectively. A controller controls, based on the voltages of the plurality of cells detected by voltage measurement unit, the plurality of discharge circuits to make the voltages or capacities of the plurality of cells equal to a target value. The controller determines a number of cells to be discharged among the plurality of cells in accordance with an allowable temperature of a substrate having the plurality of discharge circuits.
    Type: Grant
    Filed: November 16, 2018
    Date of Patent: November 1, 2022
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Yousuke Nakagawa, Masanori Ito, Masato Nakayama, Hidetsugu Mukae
  • Publication number: 20220320600
    Abstract: An electronic circuit block including a voltage detection circuit from a high-temperature, high-pressure exhaust gas, a battery module includes: a battery stack in which a plurality of battery cells are stacked; a pair of end plates disposed at both end parts in a stacking direction of the battery stack; bind bar coupling the pair of end plates to fix the battery cells; and electronic circuit block on which the voltage detection circuit for detecting voltages of the battery cells is mounted, and electronic circuit block is disposed on a surface of end plate.
    Type: Application
    Filed: July 20, 2020
    Publication date: October 6, 2022
    Inventors: JUNYA YANO, TOMONORI KUNIMITSU, MASATO NAKAYAMA, TAISUKE HAMADA
  • Patent number: 11444469
    Abstract: In order to improve safety while suppressing a decrease in efficiency of an equalizing process between a plurality of cells, controller executes an equalizing process between a plurality of cells by controlling a plurality of discharge circuits based on voltages of the plurality of cells measured by voltage measurement unit. Anomaly determination circuit determines whether or not the voltage of each of cells measured by voltage measurement unit is within a normal range. Controller includes, for each first cycle, a first discharge suspension period during which the voltages of the plurality of cells are measured without an influence of the equalizing process during execution of the equalizing process between the plurality of cells and includes, for each second cycle longer than the first cycle, a second discharge suspension period during which a determination result according to anomaly determination circuit is fixed.
    Type: Grant
    Filed: April 5, 2019
    Date of Patent: September 13, 2022
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Masato Nakayama, Hidetsugu Mukae, Yousuke Nakagawa, Masanori Ito
  • Publication number: 20220200309
    Abstract: A battery control device includes: a discharge controller which controls discharge from the battery; a charge controller which controls charge to the battery; and a storage which stores a target charge capacity to be charged to the battery. The discharge controller is configured to be capable of performing at least discharge from the battery to a lower limit SOC determined in advance. The charge controller is configured to start a count of the charge capacity at a timing at which a present SOC of the battery becomes equal to the lower limit SOC when charge is started in a state where the present SOC of the battery is lower than the lower limit SOC, and to end the charge to the battery once the charge capacity having been charged after starting the count becomes equal to the target charge capacity stored in the storage.
    Type: Application
    Filed: December 17, 2021
    Publication date: June 23, 2022
    Applicant: PRIME PLANET ENERGY & SOLUTIONS, INC.
    Inventors: Atsushi SUGIHARA, Masato NAKAYAMA, Kodai NAGANO, Shizuka MASUOKA
  • Publication number: 20220200067
    Abstract: To shorten a charge time to a battery. A battery control device includes: a discharge controller which controls a discharge from the battery; and a charge controller which controls a charge to the battery. The discharge controller is configured to be capable of performing at least a discharge from the battery to a lower limit SOC determined in advance which is higher than a pre-charge SOC determined in advance. The charge controller is configured to charge the battery at a second charge rate that is lower than a first charge rate determined in advance when a present SOC of the battery is lower than the pre-charge SOC and to charge the battery at the first charge rate when the present SOC of the battery is equal to or higher than the pre-charge SOC.
    Type: Application
    Filed: December 17, 2021
    Publication date: June 23, 2022
    Applicant: PRIME PLANET ENERGY & SOLUTIONS, INC.
    Inventors: Atsushi SUGIHARA, Masato NAKAYAMA, Kodai NAGANO, Shizuka MASUOKA
  • Publication number: 20220120823
    Abstract: In electrical fault detection device that is mounted on a vehicle and includes: energy storage unit to be mounted in a state of being insulated from a chassis ground of the vehicle; first switch inserted into positive wire; and second switch inserted into negative wire, in order to suppress a total cost by not using an expensive component while securing detection accuracy, electrical fault detection device further includes coupling capacitor, AC output unit, first voltage measurement unit, first determination unit, voltage dividing circuit, second voltage measurement unit, and second determination unit. Voltage dividing circuit is connected between positive wire between first switch and one end of load and negative wire between second switch and the other end of load.
    Type: Application
    Filed: December 9, 2019
    Publication date: April 21, 2022
    Inventors: MASATO NAKAYAMA, TOMONORI KUNIMITSU, TAISUKE HAMADA, YASUHARU TANAKA
  • Publication number: 20220011377
    Abstract: In first coupling capacitor, a first terminal is connected to a first connection point on a current path of power storage in a state of being insulated from a ground. Second coupling capacitor has a second terminal connected to a second connection point that is on a current path of power storage and is lower in potential than the first connection point, and second coupling capacitor has a first terminal connected to a second terminal of first coupling capacitor. AC output unit applies a predetermined AC voltage via impedance element to third connection point between the second terminal of first coupling capacitor and the first terminal of second coupling capacitor. Voltage measurement unit measures a voltage at third connection point. Determination unit determines the presence or absence of an electrical fault on the basis of the voltage measured by voltage measurement unit.
    Type: Application
    Filed: December 9, 2019
    Publication date: January 13, 2022
    Inventors: MASATO NAKAYAMA, TOMONORI KUNIMITSU
  • Publication number: 20210399361
    Abstract: A battery module includes: a stack of a plurality of battery cells; an end plate provided at an axial end portion of the stack of the battery cells; a substrate provided on a side opposite to the battery cells with respect to the end plate; a mounted component provided on the substrate; and a heat transfer body that is provided between the substrate and the end plate and that transfers, to the end plate, heat generated from the mounted component.
    Type: Application
    Filed: June 21, 2021
    Publication date: December 23, 2021
    Inventors: Tomonori KUNIMITSU, Junya YANO, Masato NAKAYAMA, Taisuke HAMADA, Jun ASAKURA
  • Publication number: 20210320505
    Abstract: In execution of an equalization process between a plurality of cells connected in series, power supply system is provided. In power supply system, control circuit performs active balancing between a plurality of cells included in each of a plurality of series cell groups, using a plurality of active cell balancing circuits, and performs passive balancing between the plurality of series cell groups. Voltage detection circuit connected to a series cell group being undergoing the passive balancing and consuming power is supplied with power from first power supply circuit. Voltage detection circuit connected to series cell group being undergoing active cell balancing by active cell balancing circuit is supplied with power from second power supply circuit higher in efficiency than first power supply circuit.
    Type: Application
    Filed: July 23, 2019
    Publication date: October 14, 2021
    Inventors: TOMONORI KUNIMITSU, MASATO NAKAYAMA
  • Publication number: 20210234379
    Abstract: In order to detect a cell voltage with high accuracy during an equalizing process among a plurality of cells, during execution of the equalizing process among the plurality of cells, controller measures a value of a current flowing to a negative electrode of an nth cell through an nth discharge resistor, calculates an (n?1)th voltage drop value due to a wiring resistance value of an (n?1)th wiring and an nth voltage drop value due to a wiring resistance value of an nth wiring based on the measured current value, and the wiring resistance value of the (n?1)th wiring connected to a positive electrode of the nth cell and a wiring resistance value of the nth wiring connected to the negative electrode of the nth cell, the wiring resistance value of the (n?1)th wiring and the wiring resistance value of the nth wiring being measured in advance, and, based on the (n?1)th voltage drop value and the nth voltage drop value, corrects the voltage value of the nth cell, a voltage value of an (n?1)th cell, and a voltage val
    Type: Application
    Filed: April 5, 2019
    Publication date: July 29, 2021
    Inventor: MASATO NAKAYAMA
  • Publication number: 20210234378
    Abstract: In order to improve safety while suppressing a decrease in efficiency of an equalizing process between a plurality of cells, controller executes an equalizing process between a plurality of cells by controlling a plurality of discharge circuits based on voltages of the plurality of cells measured by voltage measurement unit. Anomaly determination circuit determines whether or not the voltage of each of cells measured by voltage measurement unit is within a normal range. Controller includes, for each first cycle, a first discharge suspension period during which the voltages of the plurality of cells are measured without an influence of the equalizing process during execution of the equalizing process between the plurality of cells and includes, for each second cycle longer than the first cycle, a second discharge suspension period during which a determination result according to anomaly determination circuit is fixed.
    Type: Application
    Filed: April 5, 2019
    Publication date: July 29, 2021
    Inventors: MASATO NAKAYAMA, HIDETSUGU MUKAE, YOUSUKE NAKAGAWA, MASANORI ITO
  • Publication number: 20200412134
    Abstract: A voltage measurement unit measures voltages of the plurality of cells connected in series. A plurality of discharge circuits are connected in parallel to the plurality of cells, respectively. A controller controls, based on the voltages of the plurality of cells detected by voltage measurement unit, the plurality of discharge circuits to make the voltages or capacities of the plurality of cells equal to a target value. The controller determines a number of cells to be discharged among the plurality of cells in accordance with an allowable temperature of a substrate having the plurality of discharge circuits.
    Type: Application
    Filed: November 16, 2018
    Publication date: December 31, 2020
    Applicant: SANYO Electric Co., Ltd.
    Inventors: Yousuke Nakagawa, Masanori Ito, Masato Nakayama, Hidetsugu Mukae
  • Publication number: 20200406219
    Abstract: A method of separating a vesicle from a sample may include forming a fusant by fusing a first lipid membrane structure and the vesicle, where the vesicle may include a lipid bilayer membrane, and where the first lipid membrane structure may include a vesicular membrane-fusogenic lipid, and fusing the fusant and a second lipid membrane structure positioned at a predetermined field on a substrate.
    Type: Application
    Filed: September 16, 2020
    Publication date: December 31, 2020
    Applicant: TOPPAN PRINTING CO., LTD.
    Inventors: Takumi HIRASE, Rii MORIMURA, Masato NAKAYAMA
  • Publication number: 20200378996
    Abstract: An automated analyzer includes a reagent dispensing probe that dispenses a reagent to a reaction vessel, a sample dispensing probe that dispenses a sample to the reaction vessel, a stirring rod that stirs a sample and a reagent in the reaction vessel, and a storage unit that stores special washing information including information about a condition for performing special washing to prevent sample carryover and a washing method. The automated analyzer further includes: a determination unit that determines whether the special washing is required based on information about the sample dispensed by the sample dispensing probe and the special washing information; and a controller that causes the reagent dispensing probe to dispense a wash liquid to the reaction vessel and causes the stirring rod to stir the wash liquid in the reaction vessel based on the special washing information, when the special washing is performed.
    Type: Application
    Filed: May 28, 2020
    Publication date: December 3, 2020
    Inventors: Kazushige Kojima, Yoshiyuki Nakayama, Masato Nakayama, Arihiro Toyoda, Hiroo Sugimura, Yuta Ikarashi, Yasuhiro Fukumoto, Makoto Asakura
  • Patent number: 10807061
    Abstract: In methods of separating, moving, and detecting a vesicle of the present invention, either a vesicular-shaped lipid membrane structure containing a membrane-fusogenic lipid capable of being fused with a vesicle having a lipid bilayer membrane, or a lipid-membrane-structure-immobilization carrier, in which a lipid membrane structure containing a membrane-fusogenic lipid capable of being fused with a vesicle having a lipid bilayer membrane is immobilized on a carrier, is brought into contact with a sample containing the vesicle such that membrane fusion occurs between the lipid membrane structure and the vesicle.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: October 20, 2020
    Assignee: TOPPAN PRINTING CO., LTD.
    Inventors: Takumi Hirase, Rii Morimura, Masato Nakayama
  • Patent number: 10335112
    Abstract: In order to appropriately reduce time until scanning can be started after preparation in both an operation console and a scan room is completed, an X-ray CT apparatus includes an X-ray tube, an X-ray detector, a rotation disk, an image calculation device, a display device, a system control device, an operation console instruction device that instructs the system control device to prepare, start, and stop scanning in an operation console, and a scan gantry instruction device that instructs the system control device to prepare, start, and stop scanning in a scan room, in which the system control device includes a scanning preparation control unit that performs some scanning preparation processes among a plurality of scanning preparation processes on the basis of an instruction for scanning preparation from the operation console instruction device or the scan gantry instruction device.
    Type: Grant
    Filed: January 18, 2016
    Date of Patent: July 2, 2019
    Assignee: HITACHI, LTD.
    Inventor: Masato Nakayama
  • Publication number: 20180103924
    Abstract: In order to appropriately reduce time until scanning can be started after preparation in both an operation console and a scan room is completed, art X-ray CT apparatus includes an X-ray tube, an X-ray detector, a rotation disk, an image calculation device, a display device, a system control device, an operation console instruction device that, instructs the system control device to prepare, start, and stop scanning in an operation console, and a scan gantry instruction device that instructs the system control device to prepare, start, and stop scanning in a scan room, in which the system control device includes a scanning preparation control unit that, performs some scanning preparation processes among a plurality of scanning preparation processes on the basis of an instruction for scanning preparation from the operation console instruction device or the scan gantry instruction device.
    Type: Application
    Filed: January 18, 2016
    Publication date: April 19, 2018
    Inventor: Masato NAKAYAMA