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).
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Publication number: 20250091454Abstract: 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: ApplicationFiled: December 3, 2024Publication date: March 20, 2025Inventors: Kenji TARUYA, Daishi IGARASHI
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Patent number: 12233750Abstract: 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: GrantFiled: February 25, 2022Date of Patent: February 25, 2025Assignee: HONDA MOTOR CO., LTD.Inventors: Daishi Igarashi, Kenji Taruya
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Publication number: 20240039022Abstract: 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: ApplicationFiled: July 17, 2023Publication date: February 1, 2024Inventors: Takanori Mori, Kenji Taruya, Daishi Igarashi, Shuhei Sato, Satoshi Ueno, Kenichi Shimizu
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Patent number: 11670787Abstract: 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: GrantFiled: June 2, 2021Date of Patent: June 6, 2023Assignee: HONDA MOTOR CO., LTD.Inventors: Kenji Taruya, Daishi Igarashi
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Patent number: 11637305Abstract: 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: GrantFiled: August 23, 2021Date of Patent: April 25, 2023Assignee: HONDA MOTOR CO., LTD.Inventors: Daishi Igarashi, Akiji Ando, Nobutaka Nakajima, Kenji Taruya, Joji Nakashima
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Patent number: 11588163Abstract: 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: GrantFiled: July 22, 2021Date of Patent: February 21, 2023Assignee: HONDA MOTOR CO., LTD.Inventors: Takanori Mori, Kenji Taruya, Daishi Igarashi
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Publication number: 20220314817Abstract: 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: ApplicationFiled: February 25, 2022Publication date: October 6, 2022Inventors: Daishi Igarashi, Kenji Taruya
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Publication number: 20220080841Abstract: 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: ApplicationFiled: September 7, 2021Publication date: March 17, 2022Inventors: Kenji TARUYA, Daishi IGARASHI
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Publication number: 20220077481Abstract: 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: ApplicationFiled: August 23, 2021Publication date: March 10, 2022Inventors: Daishi Igarashi, Akiji Ando, Nobutaka Nakajima, Kenji Taruya, Joji Nakashima
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Publication number: 20220059855Abstract: 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: ApplicationFiled: August 11, 2021Publication date: February 24, 2022Inventors: Takanori Mori, Kenji Taruya, Daishi Igarashi, Shuhei Sato, Satoshi Ueno, Kenichi Shimizu
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Publication number: 20220037688Abstract: 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: ApplicationFiled: July 22, 2021Publication date: February 3, 2022Inventors: Takanori Mori, Kenji Taruya, Daishi Igarashi
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Publication number: 20220013796Abstract: 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: ApplicationFiled: July 2, 2021Publication date: January 13, 2022Inventors: Daishi Igarashi, Satoru Kawase, Kentaro Miura, Shinji Matsunaga
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Publication number: 20210384531Abstract: 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: ApplicationFiled: June 2, 2021Publication date: December 9, 2021Inventors: Kenji Taruya, Daishi Igarashi
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Patent number: 9620799Abstract: 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: GrantFiled: September 11, 2013Date of Patent: April 11, 2017Assignee: HONDA MOTOR CO., LTD.Inventors: Daishi Igarashi, Morio Kayano, Takuya Shirasaka, Kosuke Higashitani, Kenichi Shimizu, Shuichi Kazuno, Yasutaka Sakai
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Patent number: 9545910Abstract: 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: GrantFiled: March 15, 2013Date of Patent: January 17, 2017Assignee: HONDA MOTOR CO., LTD.Inventors: Morio Kayano, Daishi Igarashi, Suguru Kato
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Patent number: 8868275Abstract: 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: GrantFiled: March 15, 2013Date of Patent: October 21, 2014Assignee: Honda Motor Co., Ltd.Inventors: Takuya Shirasaka, Morio Kayano, Daishi Igarashi
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Publication number: 20140080024Abstract: 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: ApplicationFiled: September 11, 2013Publication date: March 20, 2014Applicant: HONDA MOTOR CO., LTD.Inventors: Daishi Igarashi, Morio Kayano, Takuya Shirasaka, Kosuke Higashitani, Kenichi Shimizu, Shuichi Kazuno, Yasutaka Sakai
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Patent number: 8600599Abstract: 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: GrantFiled: May 7, 2012Date of Patent: December 3, 2013Assignee: Honda Motor Co., LtdInventors: Daishi Igarashi, Takuya Shirasaka, Kazunori Watanabe, Katsumi Hayashi
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Patent number: 8557461Abstract: 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: GrantFiled: September 6, 2012Date of Patent: October 15, 2013Assignee: Honda Motor Co., LtdInventors: Shuichi Kazuno, Kazunori Watanabe, Hibiki Saeki, Takuya Shirasaka, Daishi Igarashi
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Publication number: 20130245871Abstract: 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: ApplicationFiled: March 15, 2013Publication date: September 19, 2013Applicant: HONDA MOTOR CO., LTD.Inventors: Takuya SHIRASAKA, Morio KAYANO, Daishi IGARASHI