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公开(公告)号：US20250108707A1
公开(公告)日：2025-04-03
申请号：US18978136
申请日：2024-12-12
Applicant: Kubota Corporation
Inventor： Go TAKAKI , Takahiro TAKAKI , Kenichi IWAMI , Tomoyoshi SAKANO , Yuki MINAMIDE , Kodai AMITANI , Yosuke HAYASHI
Abstract: A work vehicle includes a driver seat, a fuel cell, at least one fuel tank to store fuel to be supplied to the fuel cell, a motor connected to the fuel cell, a vehicle frame that supports the driver seat, the fuel cell, and the motor, and a mounting frame fixed to the vehicle frame to support the fuel tank, the mounting frame being positioned across the driver seat.
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公开(公告)号：US20250107477A1
公开(公告)日：2025-04-03
申请号：US18978015
申请日：2024-12-12
Applicant: Kubota Corporation
Inventor： Yosuke HAYASHI , Yuki MINAMIDE , Tomoyoshi SAKANO , Takahiro TAKAKI , Kenichi IWAMI , Kodai AMITANI , Go TAKAKI
IPC: A01B69/04
Abstract: A work vehicle includes a fuel cell module including a fuel cell stack, a motor connected to the fuel cell module, a travel device to be driven by the motor, a controller configured or programmed to control the motor, and a positioning system. The controller is configured or programmed to change a manner of stopping the motor when a travel stop command is issued during motor operation, depending on whether a position of the work vehicle identified by the positioning system is within a field or not. The controller is configured or programmed to make a time from when the travel stop command is issued until the motor stops shorter when the position of the work vehicle is within the field than when the position of the work vehicle is outside the field.
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公开(公告)号：US20250108709A1
公开(公告)日：2025-04-03
申请号：US18978159
申请日：2024-12-12
Applicant: Kubota Corporation
Inventor： Go TAKAKI , Takahiro TAKAKI , Kenichi IWAMI , Tomoyoshi SAKANO , Yuki MINAMIDE , Kodai AMITANI , Yosuke HAYASHI , Teppei OHNISHI , Atsushi MORITA , Isamu KAZAMA , Kenshiro MATSUI , Kenji ISHIHARA
Abstract: A work vehicle includes a fuel cell power generation system, an inverter connected to the fuel cell power generation system, a motor connected to the inverter, and a vehicle frame supporting the fuel cell power generation system, the inverter, and the motor, the vehicle frame rotatably supporting left and right front wheels and left and right rear wheels. The vehicle frame includes a transmission case housing a transmission to transmit driving force from the motor to the rear wheels. The inverter is at a side of the transmission case.
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公开(公告)号：US20250108708A1
公开(公告)日：2025-04-03
申请号：US18978138
申请日：2024-12-12
Applicant: Kubota Corporation
Inventor： Takahiro TAKAKI , Go TAKAKI , Kenichi IWAMI , Tomoyoshi SAKANO , Yuki MINAMIDE , Kodai AMITANI , Yosuke HAYASHI
Abstract: A work vehicle includes a fuel cell, at least one fuel tank to store fuel to be supplied to the fuel cell, a motor connected to the fuel cell, a vehicle frame supporting the fuel cell, the fuel tank, and the motor, the vehicle frame rotatably supporting front and rear wheels, at least one enclosure housing the fuel cell and the fuel tank, and at least one fuel gas sensor inside the enclosure.
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公开(公告)号：US20250100373A1
公开(公告)日：2025-03-27
申请号：US18969464
申请日：2024-12-05
Applicant: Kubota Corporation
Inventor： Yuki MINAMIDE , Go TAKAKI , Kenichi IWAMI , Tomoyoshi SAKANO , Takahiro TAKAKI , Kodai AMITANI , Yosuke HAYASHI
Abstract: A work vehicle includes a fuel cell, at least one fuel tank to store fuel to be supplied to the fuel cell, a motor connected to the fuel cell, a vehicle frame that rotatably supports front wheels and rear wheels, and a fueling port connected to the at least one fuel tank via piping. The fueling port is provided at a position higher than an axle of the front wheels.
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Patent Agency Ranking
公开(公告)号：US20250115141A1
公开(公告)日：2025-04-10
申请号：US18983600
申请日：2024-12-17
Applicant: Kubota Corporation
Inventor： Takahiro TAKAKI , Yosuke HAYASHI , Yuki MINAMIDE , Kenichi IWAMI , Tomoyoshi SAKANO , Go TAKAKI , Kodai AMITANI
Abstract: A work vehicle includes a fuel cell module including a fuel cell stack, at least one fuel tank to store fuel to be supplied to the fuel cell stack, a motor connected to the fuel cell module, a power take-off shaft drivable by the motor and to which an implement is connectable, and a controller configured or programmed to be operable in various control modes including a normal mode and an output limitation mode in which an upper limit value of electric power supplied from the fuel cell module to the motor is smaller than in the normal mode. In the output limitation mode, the controller is configured or programmed to alter the upper limit value of the electric power supplied to the motor according to at least one of a type of the implement connected to the power take-off shaft and a type of work performed by the implement.
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公开(公告)号：US20250108705A1
公开(公告)日：2025-04-03
申请号：US18978152
申请日：2024-12-12
Applicant: Kubota Corporation
Inventor： Go TAKAKI , Takahiro TAKAKI , Kenichi IWAMI , Tomoyoshi SAKANO , Yuki MINAMIDE , Kodai AMITANI , Yosuke HAYASHI , Teppei OHNISHI , Atsushi MORITA , Isamu KAZAMA , Kenshiro MATSUI , Kenji ISHIHARA
Abstract: An agricultural work vehicle includes a fuel cell power generation system, a first voltage conversion circuit to convert a voltage output from the fuel cell power generation system to output a first voltage, and a second voltage conversion circuit to convert the voltage output from the fuel cell power generation system to output a second voltage higher than the first voltage.
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公开(公告)号：US20250108684A1
公开(公告)日：2025-04-03
申请号：US18978143
申请日：2024-12-12
Applicant: Kubota Corporation
Inventor： Go TAKAKI , Takahiro TAKAKI , Kenichi IWAMI , Tomoyoshi SAKANO , Yuki MINAMIDE , Kodai AMITANI , Yosuke HAYASHI
IPC: B60K11/04 , B60K11/08 , B60K15/03 , B60K15/063 , B60L15/00 , B60L50/71 , H01M8/04007 , H01M8/04029 , H01M8/04082
Abstract: A work vehicle includes a fuel cell module including a fuel cell stack and a coolant pump, at least one fuel tank to store fuel to be supplied to the fuel cell stack, a motor connected to the fuel cell module, a vehicle frame supporting the fuel cell module, the at least one fuel tank, and the motor, the vehicle frame rotatably supporting front and rear wheels, and a cooling system to circulate coolant via the coolant pump. The cooling system includes a first radiator positioned on one side of the fuel cell module, and a second radiator positioned on another side of the fuel cell module.
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公开(公告)号：US20250115167A1
公开(公告)日：2025-04-10
申请号：US18983607
申请日：2024-12-17
Applicant: Kubota Corporation
Inventor： Yosuke HAYASHI , Yuki MINAMIDE , Kodai AMITANI , Takahiro TAKAKI , Kenichi IWAMI , Tomoyoshi SAKANO , Go TAKAKI
IPC: B60L58/33 , H01M8/04228 , H01M8/04303 , H01M8/04701
Abstract: A work vehicle includes a fuel cell module including a fuel cell stack, at least one fuel tank to store fuel to be supplied to the fuel cell stack, a motor connected to the fuel cell module, a travel device drivable by the motor, a power take-off shaft drivable by the motor and to which an implement is connected, and a controller. In response to an operation stop command, the controller is configured or programmed to stop supply of the fuel or the oxidizing gas to the fuel cell module, and then rotate the motor with power from the motor to the travel device halted, thus discharging residual charge in circuitry connected to the motor.
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公开(公告)号：US20250115166A1
公开(公告)日：2025-04-10
申请号：US18978151
申请日：2024-12-12
Applicant: Kubota Corporation
Inventor： Go TAKAKI , Takahiro TAKAKI , Kenichi IWAMI , Tomoyoshi SAKANO , Yuki MINAMIDE , Kodai AMITANI , Yosuke HAYASHI , Teppei OHNISHI , Atsushi MORITA , Isamu KAZAMA , Kenshiro MATSUI , Kenji ISHIHARA
Abstract: An agricultural tractor includes a vehicle frame, and a front housing supported by the vehicle frame. The front housing includes, a fixed housing portion fixed to the vehicle frame, a movable housing portion supported by the vehicle frame or the fixed housing portion and being openable and closeable.
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