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US 12,420,623 B2Granted
Energy storage device and work machine
AssigneeYanmar Holdings Co., Ltd.
InventorTakeshi Ouchida
Life of this patent
Estimating the term…
Abstract
An exemplary energy storage device is an energy storage device capable of storing energy, which includes a flywheel driven by a motor to store and release rotation energy and a hydraulic element disposed between the motor and the flywheel to change the rotation speed of the flywheel.
Claims15
An energy storage device capable of storing energy, the energy storage device comprising:
- a flywheel that is configured to be driven by a motor to store and release rotation energy;
- and
- a hydraulic element that is disposed between the motor and the flywheel and is configured to change a rotation speed of the flywheel,
- wherein the hydraulic element includes a plunger member configured to move in a radial direction perpendicular to an axial direction of the hydraulic element.
1 more element
An energy storage device capable of storing energy, the energy storage device comprising:
- a flywheel that is configured to be driven by a motor to store and release rotation energy;
- a hydraulic element that is disposed between the motor and the flywheel and is configured to change a rotation speed of the flywheel, wherein the hydraulic element has a hydraulic pump and a hydraulic motor, and the hydraulic pump is a variable displacement hydraulic pump;
- a hydraulic servo mechanism configured to control a capacity of the variable displacement hydraulic pump;
- wherein the variable displacement hydraulic pump has:
- a ring provided so as to be movable in position by the hydraulic servo mechanism,
- a case surrounding an outer periphery of the ring, and
- a first oil chamber and a second oil chamber provided between the ring and the case and partitioned from each other.
4 more elements
Dependencies are inferred from the claim text.