Patents by Inventor Daishi Igarashi

Daishi Igarashi 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: 20250091454
    Abstract: The power system includes a fuel cell stack, a system accessory, a battery, and a control device. The control device executes, based on a state of a vehicle and the battery, one of the following processes: a normal power generation process during which the control device makes a net output greater than 0; a first idling stop process during which the control device makes the net output equal to or less than 0 while continuing operation of the system accessory and power generation by the stack; a second idling stop process during which the control device makes the net output less than 0 by stopping the power generation while continuing the operation of the system accessory; and a third idling stop process during which the control device makes the net output equal to 0, by stopping both the operation of the system accessory and the power generation.
    Type: Application
    Filed: December 3, 2024
    Publication date: March 20, 2025
    Inventors: Kenji TARUYA, Daishi IGARASHI
  • Patent number: 12233750
    Abstract: A vehicle system includes a fuel cell system, a battery, a drive device that operates with power, a load different from the drive device, a positional information acquisition unit, a traveling route setting unit, and a control device configured to control power to be supplied to the load from the fuel cell system and the battery based on positional information acquired by the positional information acquisition unit and a traveling route set by the traveling route setting unit.
    Type: Grant
    Filed: February 25, 2022
    Date of Patent: February 25, 2025
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Daishi Igarashi, Kenji Taruya
  • Publication number: 20240039022
    Abstract: According to an embodiment, a power supply control system includes a plurality of fuel cell systems mounted in an electric device that operates using electric power, a first controller configured to control the plurality of fuel cell systems in an integrated way, and a second controller configured to control the fuel cell system to which the second controller belongs among the plurality of fuel cell systems. The second controller acquires a state of the fuel cell system to which the second controller belongs and notifies the first controller of the state of the fuel cell system. The first controller controls power generation of each of the plurality of fuel cell systems on the basis of the state of the fuel cell system to which the second controller belongs acquired by the second controller.
    Type: Application
    Filed: July 17, 2023
    Publication date: February 1, 2024
    Inventors: Takanori Mori, Kenji Taruya, Daishi Igarashi, Shuhei Sato, Satoshi Ueno, Kenichi Shimizu
  • Patent number: 11670787
    Abstract: According to an embodiment, a power supply control system includes a state acquirer configured to acquire states of a plurality of fuel cell systems mounted in an electric device that operates using electric power, a power acquirer configured to acquire a required amount of electric power from the electric device, and a power generation controller configured to control power generation of one or more fuel cell systems among the plurality of fuel cell systems so that the required amount of electric power acquired by the power acquirer is satisfied on the basis of the state of each of the plurality of fuel cell systems acquired by the state acquirer.
    Type: Grant
    Filed: June 2, 2021
    Date of Patent: June 6, 2023
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Kenji Taruya, Daishi Igarashi
  • Patent number: 11637305
    Abstract: A power generation control system includes a plurality of fuel cell systems mounted in an electric device that operates using electric power, a battery mounted in the electric device, and a control device configured to control each of the plurality of fuel cell systems on the basis of states of the plurality of fuel cell systems, a state of the battery, and required power of the plurality of fuel cell systems.
    Type: Grant
    Filed: August 23, 2021
    Date of Patent: April 25, 2023
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Daishi Igarashi, Akiji Ando, Nobutaka Nakajima, Kenji Taruya, Joji Nakashima
  • Patent number: 11588163
    Abstract: A fuel cell mount apparatus includes a plurality of fuel cell stacks, a pipe arrangement, a fluid adjustment part, a pressure detection part, and a control device. The pipe arrangement is individually connected to each of the fuel cell stacks. The fluid adjustment part adjusts a pressure or a flow rate of a fluid which flows through the pipe arrangement. The pressure detection part is disposed on a portion which requires a desired pressure or flow rate of the fluid in the pipe arrangement and detects the pressure of the fluid. The control device controls the fluid adjustment part on the basis of a detection result of the pressure detection part.
    Type: Grant
    Filed: July 22, 2021
    Date of Patent: February 21, 2023
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Takanori Mori, Kenji Taruya, Daishi Igarashi
  • Publication number: 20220314817
    Abstract: A vehicle system includes a fuel cell system, a battery, a drive device that operates with power, a load different from the drive device, a positional information acquisition unit, a traveling route setting unit, and a control device configured to control power to be supplied to the load from the fuel cell system and the battery based on positional information acquired by the positional information acquisition unit and a traveling route set by the traveling route setting unit.
    Type: Application
    Filed: February 25, 2022
    Publication date: October 6, 2022
    Inventors: Daishi Igarashi, Kenji Taruya
  • Publication number: 20220080841
    Abstract: The power system includes a fuel cell stack, a system accessory, a battery, and a control device. The control device executes, based on a state of a vehicle and the battery, one of the following processes: a normal power generation process during which the control device makes a net output greater than 0; a first idling stop process during which the control device makes the net output equal to or less than 0 while continuing operation of the system accessory and power generation by the stack; a second idling stop process during which the control device makes the net output less than 0 by stopping the power generation while continuing the operation of the system accessory; and a third idling atop process during which the control device makes the net output equal to 0, by stopping both the operation of the system accessory and the power generation.
    Type: Application
    Filed: September 7, 2021
    Publication date: March 17, 2022
    Inventors: Kenji TARUYA, Daishi IGARASHI
  • Publication number: 20220077481
    Abstract: A power generation control system includes a plurality of fuel cell systems mounted in an electric device that operates using electric power, a battery mounted in the electric device, and a control device configured to control each of the plurality of fuel cell systems on the basis of states of the plurality of fuel cell systems, a state of the battery, and required power of the plurality of fuel cell systems.
    Type: Application
    Filed: August 23, 2021
    Publication date: March 10, 2022
    Inventors: Daishi Igarashi, Akiji Ando, Nobutaka Nakajima, Kenji Taruya, Joji Nakashima
  • Publication number: 20220059855
    Abstract: According to an embodiment, a power supply control system includes a plurality of fuel cell systems mounted in an electric device that operates using electric power, a first controller configured to control the plurality of fuel cell systems in an integrated way, and a second controller configured to control the fuel cell system to which the second controller belongs among the plurality of fuel cell systems. The second controller acquires a state of the fuel cell system to which the second controller belongs and notifies the first controller of the state of the fuel cell system. The first controller controls power generation of each of the plurality of fuel cell systems on the basis of the state of the fuel cell system to which the second controller belongs acquired by the second controller.
    Type: Application
    Filed: August 11, 2021
    Publication date: February 24, 2022
    Inventors: Takanori Mori, Kenji Taruya, Daishi Igarashi, Shuhei Sato, Satoshi Ueno, Kenichi Shimizu
  • Publication number: 20220037688
    Abstract: A fuel cell mount apparatus includes a plurality of fuel cell stacks, a pipe arrangement, a fluid adjustment part, a pressure detection part, and a control device. The pipe arrangement is individually connected to each of the fuel cell stacks. The fluid adjustment part adjusts a pressure or a flow rate of a fluid which flows through the pipe arrangement. The pressure detection part is disposed on a portion which requires a desired pressure or flow rate of the fluid in the pipe arrangement and detects the pressure of the fluid. The control device controls the fluid adjustment part on the basis of a detection result of the pressure detection part.
    Type: Application
    Filed: July 22, 2021
    Publication date: February 3, 2022
    Inventors: Takanori Mori, Kenji Taruya, Daishi Igarashi
  • Publication number: 20220013796
    Abstract: A fuel cell system for a vehicle includes a plurality of unit fuel cell groups, which are connected, each of unit fuel cell groups including a hydrogen tank, a fuel cell and a fuel cell controller configured to control power generation of the fuel cell, a tank controller configured to control filling and discharge of hydrogen in the hydrogen tank of each of at least two of the unit fuel cell groups, each of the unit fuel cell groups includes a hydrogen supply line configured to bring hydrogen to the fuel cell, the hydrogen supply lines of the at least two unit fuel cell groups are linked with each other, and the tank controller stops supply of hydrogen into the fuel cell of a unit fuel cell group in which an abnormality has been detected.
    Type: Application
    Filed: July 2, 2021
    Publication date: January 13, 2022
    Inventors: Daishi Igarashi, Satoru Kawase, Kentaro Miura, Shinji Matsunaga
  • Publication number: 20210384531
    Abstract: According to an embodiment, a power supply control system includes a state acquirer configured to acquire states of a plurality of fuel cell systems mounted in an electric device that operates using electric power, a power acquirer configured to acquire a required amount of electric power from the electric device, and a power generation controller configured to control power generation of one or more fuel cell systems among the plurality of fuel cell systems so that the required amount of electric power acquired by the power acquirer is satisfied on the basis of the state of each of the plurality of fuel cell systems acquired by the state acquirer.
    Type: Application
    Filed: June 2, 2021
    Publication date: December 9, 2021
    Inventors: Kenji Taruya, Daishi Igarashi
  • Patent number: 9620799
    Abstract: There are provided: a power supply provided with a fuel cell; a fuel cell vehicle; an inverter device capable of supplying electric power that is supplied from the fuel cell to an external load; a radiator; a radiator fan; a dryness detection device that detects a dry condition of the fuel cell; and an ECU that control supply of electric power to the external load. The ECU drives the radiator fan when the dryness detection device detects dryness of the fuel cell while electric power is being supplied from the fuel cell to the external load.
    Type: Grant
    Filed: September 11, 2013
    Date of Patent: April 11, 2017
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Daishi Igarashi, Morio Kayano, Takuya Shirasaka, Kosuke Higashitani, Kenichi Shimizu, Shuichi Kazuno, Yasutaka Sakai
  • Patent number: 9545910
    Abstract: An ECU selects a power supply mode which controls a power supply to an inverter apparatus, in a case where a fuel cell vehicle is instructed to start-up by an ignition switch and it is detected that a power supply inlet and a power supply connector are fitted together based on voltage of CONNECT signal, and selects a driving mode which controls the driving of the fuel cell vehicle, in a case where the fuel cell vehicle is instructed to start-up by the ignition switch and it is detected that the power supply inlet and the power supply connector are not fitted together based on voltage of CONNECT signal.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: January 17, 2017
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Morio Kayano, Daishi Igarashi, Suguru Kato
  • Patent number: 8868275
    Abstract: An ECU of a control apparatus further alleviates a fluctuation in a power generation amount of a fuel cell stack with respect to the power required by an inverter apparatus, when a power supply circuit configured by each of contactors and a power supply inlet 11a supplies the power to the inverter apparatus compared with when a vehicle is driving. The ECU, when the power supply circuit supplies power to the inverter apparatus, stops the power generation of the fuel cell stack in a case where a remaining capacity in a battery is greater than or equal to a predetermined remaining capacity, and inhibits the fuel cell stack from stopping the power generation in a case where the power supplied to the inverter apparatus by the power supply circuit is greater than or equal to a predetermined power supply amount.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: October 21, 2014
    Assignee: Honda Motor Co., Ltd.
    Inventors: Takuya Shirasaka, Morio Kayano, Daishi Igarashi
  • Publication number: 20140080024
    Abstract: There are provided: a power supply provided with a fuel cell; a fuel cell vehicle; an inverter device capable of supplying electric power that is supplied from the fuel cell to an external load; a radiator; a radiator fan; a dryness detection device that detects a dry condition of the fuel cell; and an ECU that control supply of electric power to the external load. The ECU drives the radiator fan when the dryness detection device detects dryness of the fuel cell while electric power is being supplied from the fuel cell to the external load.
    Type: Application
    Filed: September 11, 2013
    Publication date: March 20, 2014
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Daishi Igarashi, Morio Kayano, Takuya Shirasaka, Kosuke Higashitani, Kenichi Shimizu, Shuichi Kazuno, Yasutaka Sakai
  • Patent number: 8600599
    Abstract: A FC vehicle includes a long distance hill climbing detector for detecting long distance hill climbing and a controller for, in the case where the long distance hill climbing detector detects the long distance hill climbing, controlling the allocation amount of electric power outputted from an FC such that the allocation amount is larger than the allocation amount before the detection of the long distance hill climbing.
    Type: Grant
    Filed: May 7, 2012
    Date of Patent: December 3, 2013
    Assignee: Honda Motor Co., Ltd
    Inventors: Daishi Igarashi, Takuya Shirasaka, Kazunori Watanabe, Katsumi Hayashi
  • Patent number: 8557461
    Abstract: A fuel cell vehicle is provided. The voltage of a fuel cell is fixed, by a DC/DC converter, to a voltage outside an oxidation reduction progress voltage range of the fuel cell. In this state, oxygen concentration or hydrogen concentration is decreased by a gas supply unit, and electric power outputted from the fuel cell is decreased. In this state, regenerative electric power generated by regeneration is collected into a battery.
    Type: Grant
    Filed: September 6, 2012
    Date of Patent: October 15, 2013
    Assignee: Honda Motor Co., Ltd
    Inventors: Shuichi Kazuno, Kazunori Watanabe, Hibiki Saeki, Takuya Shirasaka, Daishi Igarashi
  • Publication number: 20130245871
    Abstract: An ECU of a control apparatus further alleviates a fluctuation in a power generation amount of a fuel cell stack with respect to the power required by an inverter apparatus, when a power supply circuit configured by each of contactors and a power supply inlet 11a supplies the power to the inverter apparatus compared with when a vehicle is driving. The ECU, when the power supply circuit supplies power to the inverter apparatus, stops the power generation of the fuel cell stack in a case where a remaining capacity in a battery is greater than or equal to a predetermined remaining capacity, and inhibits the fuel cell stack from stopping the power generation in a case where the power supplied to the inverter apparatus by the power supply circuit is greater than or equal to a predetermined power supply amount.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 19, 2013
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Takuya SHIRASAKA, Morio KAYANO, Daishi IGARASHI