Patent ID: 8456269

Claim:
A coil bobbin for a superconducting magnetic energy storage having a plurality of coil bobbins to allow a superconducting coil to be wound in a toroidal arrangement, the coil bobbin comprising: a pair of coil bobbin frames provided in such a way as to face each other, each of the coil bobbin frames having an annular plate shape; superconducting coils wound around the respective coil bobbin frames, each of the superconducting coils forming a pancake shape; first support plates provided on surfaces of the respective coil bobbin frames, the surfaces being opposite to surfaces facing each other between the coil bobbin frames, first support plates supporting the coil bobbin frames; second support plates provided on the respective facing surfaces of the coil bobbin frames, the second support plates supporting the coil bobbin frames; and a center frame disposed between the second support plates, the center frame having an annular plate shape that is gradually reduced in thickness towards a center of the toroidal arrangement.