Energy Storage Method by Integrating Elastic Potential Energy and Rotational Kinetic Energy of Cylindrical Spring

By utilizing cylindrical helical springs which were compressed then rotated,a newenergy storage method which integrated elastic potential energy and rotational kinetic energy was mentioned and the equipment model was preliminarily built. Energy-density ratios of various common spring materials were contrastively calculated to get the optimal material in energy storage ability. The rotational kinetic energy and elastic potential energy of springs at a range of parameters were contrastively analyzed. The stored energy values of integration energy storage method and corresponding flywheel method were compared. The results showthat the integration energy storage method is feasible.