Patents by Inventor Nobutaka Nakajima
Nobutaka Nakajima 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: 12126062Abstract: A control device for controlling a power supply device that supplies power to a work machine includes a load amount acquisition unit configured to acquire load information indicating a load amount of the work machine during a work period of the work machine, and an output condition determination unit configured to determine an output rate of a fuel cell based on the load amount indicated by the load information during the work period. The power supply device includes the fuel cell. The work period may be a period starting when information indicating start of work of the work machine is received and ending when information indicating end of the work of the work machine is received.Type: GrantFiled: June 9, 2021Date of Patent: October 22, 2024Assignee: HONDA MOTOR CO., LTD.Inventors: Ryota Kitamoto, Nobutaka Nakajima, Akira Yamada
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Patent number: 11984626Abstract: A control apparatus controls an electric power supply apparatus configured to supply electric power to a working machine. The electric power supply apparatus is provided with a fuel cell. The control apparatus is provided with a restriction request acquisition unit configured to acquire a restriction request for requesting restriction of the supply of the electric power via a communication network, and a restriction unit configured to restrict the supply of the electric power in a case where the restriction request acquisition unit acquires the restriction request. The control apparatus may be provided with an end detection unit configured to detect end of use of the working machine. The restriction unit may decide to start the restriction in a case where, after the restriction request acquisition unit acquires the restriction request, the end detection unit detects the end of the use of the working machine.Type: GrantFiled: June 9, 2021Date of Patent: May 14, 2024Assignee: HONDA MOTOR CO., LTD.Inventors: Takamasa Mori, Nobutaka Nakajima
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Patent number: 11777121Abstract: A power system comprises a fuel cell system having a fuel cell stack and a fuel cell water pump, a heat source having a heat source water pump and configured to be actuated to generate heat, a heat radiator for exchanging heat with the atmosphere, a cooling passage thermally connecting the fuel cell system, the heat source, and the heat radiator, and a controller for controlling the fuel cell system, the heat source, and the heat radiator, and the cooling passage.Type: GrantFiled: February 24, 2022Date of Patent: October 3, 2023Assignee: HONDA MOTOR CO., LTD.Inventors: Junya Miyazaki, Nobutaka Nakajima, Kento Takeuchi, Kenji Taruya
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Publication number: 20230278527Abstract: A linking structure of a wiper blade 12 includes a wiper arm 10, the wiper blade 12, a hook part 10a provided at the wiper arm 10, and a linking part 13 provided at the wiper blade 12. The hook part 10a has a tip side extension part 10b in which a through hole 10c is formed. The linking part 13 has: a pair of sidewalls 13a, 13b facing each other; a cylindrical part 13c bonded to the pair of sidewalls 13a, 13b and engaged with the hook part 10a; a release lever 13d provided at the cylindrical part 13c; and a bridging part 13g bonded to the pair of sidewalls 13a, 13b. The release lever 13d is flexible, and includes a protrusion part 13f fittable with the through hole 10c. The tip part 13e of the release lever 13d protrudes to the outside of the linking part 13.Type: ApplicationFiled: February 25, 2022Publication date: September 7, 2023Applicant: MITSUBA CorporationInventors: KAZUHISA TAMURA, KAZUYA NISHIMURA, NOBUTAKA NAKAJIMA
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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: 11626602Abstract: To provide a warming-up system in which a period of time taken to warm up a fuel cell is shorter than that for conventional ones. A warming-up system according to an embodiment includes a fuel cell, a motor, a rotation shaft, a speed reducer, a measuring unit, and a control unit. The motor convert electrical power generated by the fuel cell into a rotative force. The speed reducer brake the rotation shaft that is rotating. The measuring unit measure a temperature of the fuel cell. The control unit is configured to determine whether to perform warming up for the fuel cell, based on the temperature. When the control unit determines to perform the warming up, the control unit causes the motor and the speed reducer to operate, and uses heat generated in the fuel cell and heat generated in the speed reducer to warm up the fuel cell.Type: GrantFiled: March 2, 2022Date of Patent: April 11, 2023Assignee: HONDA MOTOR CO., LTD.Inventors: Nobutaka Nakajima, Junya Miyazaki, Kento Takeuchi
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Publication number: 20220320542Abstract: To provide an electrical power system and an electrical power control device that make it possible to suppress deterioration of a fuel cell compared to that conventional seen. An electrical power system according to an embodiment includes a fuel cell, a heat source, a heat dissipator, and a controller. The fuel cell is configured to generate electrical power through electrochemical reactions to generate first heat. The heat source operates to generate second heat. The heat dissipator is configured to dissipate the first heat and the second heat. The controller is configured to control the fuel cell to allow, when the heat source is in operation, an amount of the first heat to be equal to or below an available heat dissipation capacity acquired by subtracting an amount of the second heat from a maximum amount of heat to be dissipated from the heat dissipator.Type: ApplicationFiled: March 9, 2022Publication date: October 6, 2022Inventors: Kento TAKEUCHI, Nobutaka NAKAJIMA, Junya MIYAZAKI
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Publication number: 20220320543Abstract: To provide an electrical power system and an electrical power control device that make it possible to improve fuel efficiency compared to that conventionally possible. An electrical power system according to an embodiment includes fuel cells at a count of n, n representing an integer of 2 or greater, and a controller. The fuel cells are each configured to generate electrical power through electrochemical reactions. The controller is configured to set, based on a required output required in accordance with electrical power to be consumed by a load, an operation mode for each of the fuel cells to one mode determined from a plurality of modes including a first electrical power generation mode under which starting and stopping of generation of electrical power are repeated, a second electrical power generation mode under which generation of electrical power continues, and a stop mode under which generation of electrical power is stopped.Type: ApplicationFiled: March 11, 2022Publication date: October 6, 2022Inventor: Nobutaka NAKAJIMA
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Publication number: 20220320548Abstract: A power system comprises a fuel cell system having a fuel cell stack and a fuel cell water pump, a heat source having a heat source water pump and configured to be actuated to generate heat, a heat radiator for exchanging heat with the atmosphere, a cooling passage thermally connecting the fuel cell system, the heat source, and the heat radiator, and a controller for controlling the fuel cell system, the heat source, and the heat radiator, and the cooling passage.Type: ApplicationFiled: February 24, 2022Publication date: October 6, 2022Inventors: Junya MIYAZAKI, Nobutaka NAKAJIMA, Kento TAKEUCHI, Kenji TARUYA
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Publication number: 20220302482Abstract: To provide a warming-up system in which a period of time taken to warm up a fuel cell is shorter than that for conventional ones. A warming-up system according to an embodiment includes a fuel cell, a motor, a rotation shaft, a speed reducer, a measuring unit, and a control unit. The motor convert electrical power generated by the fuel cell into a rotative force. The speed reducer brake the rotation shaft that is rotating. The measuring unit measure a temperature of the fuel cell. The control unit is configured to determine whether to perform warming up for the fuel cell, based on the temperature. When the control unit determines to perform the warming up, the control unit causes the motor and the speed reducer to operate, and uses heat generated in the fuel cell and heat generated in the speed reducer to warm up the fuel cell.Type: ApplicationFiled: March 2, 2022Publication date: September 22, 2022Inventors: Nobutaka NAKAJIMA, Junya MIYAZAKI, Kento TAKEUCHI
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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: 20210313600Abstract: A preservation system comprises: a fuel cell; and an oxidant agent supply passage, positioned inside the power supply device, for supplying the oxidant agent to the fuel cell, and (i) a piping positioned outside the power supply device, and (ii) a connecting portion for oxidant agent for connecting the oxidant agent supply passage, to preserve the power supply device configured to be detachable to a work machine. The preservation system comprises: a preservation section for preserving the power supply device detached from the work machine; a purge gas conserving section for conserving a purge gas in order for purging the fuel cell and the oxidant agent supply passage; a purge gas piping, being a piping positioned outside the power supply device; and a purge gas flow rate regulation section for regulating flow rate of the purge gas supplied to the power supply device.Type: ApplicationFiled: June 22, 2021Publication date: October 7, 2021Inventors: Akira YAMADA, Nobutaka NAKAJIMA, Ryota KITAMOTO, Takamasa MORI
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Publication number: 20210296666Abstract: A control device for controlling a power supply device that supplies power to a work machine includes a load amount acquisition unit configured to acquire load information indicating a load amount of the work machine during a work period of the work machine, and an output condition determination unit configured to determine an output rate of a fuel cell based on the load amount indicated by the load information during the work period. The power supply device includes the fuel cell. The work period may be a period starting when information indicating start of work of the work machine is received and ending when information indicating end of the work of the work machine is received.Type: ApplicationFiled: June 9, 2021Publication date: September 23, 2021Inventors: Ryota KITAMOTO, Nobutaka NAKAJIMA, Akira YAMADA
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Publication number: 20210296670Abstract: A control apparatus controls an electric power supply apparatus configured to supply electric power to a working machine. The electric power supply apparatus is provided with a fuel cell. The control apparatus is provided with a restriction request acquisition unit configured to acquire a restriction request for requesting restriction of the supply of the electric power via a communication network, and a restriction unit configured to restrict the supply of the electric power in a case where the restriction request acquisition unit acquires the restriction request. The control apparatus may be provided with an end detection unit configured to detect end of use of the working machine. The restriction unit may decide to start the restriction in a case where, after the restriction request acquisition unit acquires the restriction request, the end detection unit detects the end of the use of the working machine.Type: ApplicationFiled: June 9, 2021Publication date: September 23, 2021Inventors: Takamasa MORI, Nobutaka NAKAJIMA
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Publication number: 20210296664Abstract: The electric power supply device supplies electric power to a work machine. The electric power supply device includes a fuel cell and a utility connecting section for transferring utility to be utilized for an operation of a fuel cell between the work machine and the electric power supply device. A control device for controlling the electric power supply device for supplying electric power to the work machine includes a rated capability obtaining section for obtaining information indicating a rated value of a capability with which the work machine supplies the utility to the fuel cell in response to the electric power supply device being mounted in the work machine, or the electric power supply device being able to utilize the utility, and an operating condition determining section for determining an operating condition of the electric power supply device based on the rated value.Type: ApplicationFiled: June 9, 2021Publication date: September 23, 2021Inventors: Ryota KITAMOTO, Yuki KUWANO, Nobutaka NAKAJIMA, Takamasa MORI
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Patent number: 10367213Abstract: A method of controlling a fuel cell system includes circulating a coolant through a fuel cell circulation passage in which a fuel cell and a gas liquid separator are provided. A valve is controlled selectively to connect or disconnect the fuel cell circulation passage and an air conditioning equipment circulation passage in which an air conditioning mechanism is provided. The valve is maintained to connect the fuel cell circulation passage and the air conditioning equipment circulation passage to circulate the coolant through the air conditioning equipment circulation passage when it is determined that the coolant includes air bubbles more than or equal to the threshold amount, when the valve connects the fuel cell circulation passage and the air conditioning equipment circulation passage, and when a temperature of the fuel cell is higher than or equal to a threshold temperature even if the air conditioning mechanism stops.Type: GrantFiled: July 28, 2017Date of Patent: July 30, 2019Assignee: HONDA MOTOR CO., LTD.Inventors: Shinya Watanabe, Nobutaka Nakajima, Yuji Matsumoto
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Patent number: 10109872Abstract: As an activation time power generation mode of a fuel cell system, a control device executes: a first step of determining whether or not hydrogen is present in an anode gas flow path; a second step of bringing a contactor to a connected state if hydrogen is detected in the first step as being present in the anode gas flow path; a third step of supplying air to a cathode through a cathode gas flow path after the second step has been executed; and a fourth step of, if a voltage of the fuel cell stack detected by a voltage detection device reaches a predetermined voltage, connecting an electrical load to the fuel cell stack, and performing electric power generation of the fuel cell stack while maintaining the voltage at or below the predetermined voltage.Type: GrantFiled: August 27, 2013Date of Patent: October 23, 2018Assignee: HONDA MOTOR CO., LTD.Inventors: Koichiro Furusawa, Nobutaka Nakajima, Kaoru Yamazaki
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Publication number: 20180034087Abstract: A method of controlling a fuel cell system includes circulating a coolant through a fuel cell circulation passage in which a fuel cell and a gas liquid separator are provided. A valve is controlled selectively to connect or disconnect the fuel cell circulation passage and an air conditioning equipment circulation passage in which an air conditioning mechanism is provided. The valve is maintained to connect the fuel cell circulation passage and the air conditioning equipment circulation passage to circulate the coolant through the air conditioning equipment circulation passage when it is determined that the coolant includes air bubbles more than or equal to the threshold amount, when the valve connects the fuel cell circulation passage and the air conditioning equipment circulation passage, and when a temperature of the fuel cell is higher than or equal to a threshold temperature even if the air conditioning mechanism stops.Type: ApplicationFiled: July 28, 2017Publication date: February 1, 2018Applicant: HONDA MOTOR CO., LTD.Inventors: Shinya WATANABE, Nobutaka NAKAJIMA, Yuji MATSUMOTO
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Patent number: 9786935Abstract: A controller (control portion) of a fuel cell system is provided with a flow path switching control device that switches a thermostat valve (flow path switching valve) so that, after a fuel cell has stopped generating electric power, coolant is supplied to a radiator circulation path until the coolant temperature becomes a second temperature threshold value that is lower than a first temperature threshold value.Type: GrantFiled: May 31, 2013Date of Patent: October 10, 2017Assignee: HONDA MOTOR CO., LTD.Inventors: Koichiro Furusawa, Nobutaka Nakajima, Kaoru Yamazaki, Kenichiro Ueda, Nobuki Koiwa, Kenji Taruya, Masakazu Hamachi
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Patent number: D1043659Type: GrantFiled: February 23, 2023Date of Patent: September 24, 2024Assignee: Lenovo (Singapore) Pte. Ltd.Inventors: Asahi Tokyo, Nobutaka Nakajima, Shinnosuke Takahashi