Kubota Corporation

Takahiro Takaki

Yukifumi Yamanaka

Akihiro Kishimoto

Go Takaki

Teruo Kunizawa

Junki Ito

Yoshiaki Araki

A swiveling working machine includes a swivel base; a working device provided on a front side of the swivel base; a battery unit; an electric motor that is driven by electric power output by the battery unit; and a hydraulic pump that delivers a hydraulic fluid by driving of the electric motor. The battery unit is disposed at a rear portion of the swivel base. The electric motor and the hydraulic pump are disposed sideward of the battery unit side by side in a front-rear direction.

Swiveling working machine

A working machine includes a vehicle body; a traveling device that supports the vehicle body; a drive that drives the traveling device; and a cabin that accommodates an operator seat. The drive has a drive motor that drives the traveling device; a fuel cell that supplies electric power to the drive motor; a controller that controls power supply from the fuel cell to the drive motor; and a hydrogen tank that supplies a hydrogen gas for fuel to the fuel cell. The hydrogen tank is disposed in an upper portion of an internal space of the cabin.

Working machine

A tractor including a vehicle body, a hood at a front portion of the vehicle body, a traveling device to support the vehicle body so that the vehicle body is capable of traveling, a driving motor to drive the traveling device, a PTO shaft to transmit power to a working machine, a fuel cell system including a fuel cell and operable to supply electricity generated by the fuel cell to the driving motor, and a battery to store electricity generated by the fuel cell. The fuel cell and the battery are disposed inside the hood.

Hydrogen supply system, fuel cell system, and working machine including hydrogen supply system and fuel cell system

A fuel cell system includes a hydrogen tank to store hydrogen, a fuel cell to receive hydrogen gas from the hydrogen tank to generate electricity, a temperature controller to adjust a temperature inside the hydrogen tank, and a control unit to control the temperature controller based on the amount of hydrogen remaining in the hydrogen tank, the control unit being configured to increase the temperature inside the hydrogen tank when the amount of the remaining hydrogen is equal to or less than a first predetermined value.

Fuel cell system, working machine including the same, and method of controlling fuel cell system

A hydrogen supply system that supplies hydrogen gas to a fuel cell and causes the fuel cell to generate electricity includes a plurality of hydrogen tanks that each store hydrogen gas, and a hydrogen gas supply path that supplies the hydrogen gas to the fuel cell from each of the plurality of hydrogen tanks. At least one hydrogen tank of the plurality of hydrogen tanks is a first reserve tank that is connected to a hydrogen gas collecting pipe or a hydrogen gas recovery pipe, and that stores hydrogen gas that was not used in generating electricity in the fuel cell.

Growing community of inventors

Osaka, Japan

Takahiro Takaki