Energy storage device

A device for storing received electrical energy as rotational energy and for providing the stored energy as electrical energy on demand in electric vehicles without energy losing during driving, rotation, vibration and another intrusion, comprising:

• a. a base of electric vehicle-chassis;
• b. a frame rotatably-attached to said base, allowing rotation of said frame around a frame spin axis directed in a first direction;
• c. a gimbal rotatably-attached to said frame, allowing rotation of said gimbal around a gimbal spin axis that is perpendicular to said frame spin axis;
• d. a rotor rotatably-attached to said gimbal, allowing rotation of said rotor around a rotor spin axis that is perpendicular to said gimbal spin axis;
• wherein said base, said frame, said gimbal and said rotor together constitute a gyroscope assembly that provides three-dimensional free spinning of the rotor as a field that eliminates losing energy mechanical friction;
• and wherein
• said rotor is configured as a rotor of a rotating electric machine functionally-
• associated with the field of a rotating electric machine
• and
• said gimbal is configured as a stator of said rotating electric machine with a functionally-associated stator leads to transmit electricity to and from said gimbal, said stator leads comprising at least two rotary electric connectors:
• a two stator leads gimbal-frame rotary electric connectors, and
• a two stator leads frame-base rotary electric connectors.