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US 12,381,444 B2Granted
Hollow disc rotor for flywheel power storage device and method for manufacturing same
AssigneeNexFi Technology Inc.
InventorsSatoshi Tanimoto, Takashi Nakamura
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Abstract
Provided are a hollow disk rotor for a flywheel energy storage system with a significantly improved circumferential velocity limit and stored energy limit, and a method for manufacturing the same. The rotor includes a plurality of circumferentially wound reinforcement fibers, a matrix material that fills gaps between the reinforcement fibers, and carbon nanotubes extending upward through the matrix material from surfaces of the reinforcement fibers as base points.
Claims14
A hollow disk rotor of a flywheel for a flywheel energy storage system, comprising:
- a plurality of circumferentially wound reinforcement fibers;
- a matrix material that fills gaps between the reinforcement fibers;
- and
- carbon nanotubes extending upward through the matrix material from surfaces of the reinforcement fibers as base points.
1 more element
Dependencies are inferred from the claim text.