Pancake type bifilar winding module using high-tc superconducting wire and bobbin for winding therefor

A pancake-type bifilar winding module, comprising a plurality of bifilar winding modules, each including:

• a bobbin including a cylindrical main body having a wire insertion groove for winding a superconducting wire in a bifilar manner to have minimal inductance, in which the wire insertion groove has a depth greater than a width of the superconducting wire and a radius of curvature greater than a predetermined value, and is structured to guide the superconducting wire from one side to another side of the body, and a cylindrical supporting base having at least one block fixing notch and being disposed under the main body;
• the superconducting wire wound in a bifilar manner, maintaining a predetermined tension as it is disposed in the wire insertion groove of the bobbin and curved in the middle portion thereof in a longitudinal direction;
• and
• a copper block serving as an electrical terminal, which is installed and fixed to the block fixing notch of the supporting base of the bobbin for joining the superconducting wire with a terminal portion, and joined with the superconducting wire while the superconducting wire maintains a predetermined tension,
• wherein the bifilar winding modules are stacked in a vertical direction such that the supporting base of an upper bifilar winding module is in contact with the main body of the bobbin of a lower bifilar winding module, so that the superconducting wire of each of the bifilar winding modules are connected in series and thereby the total length of the superconducting wire can be increased.

A winding bobbin used for bifilar winding in a pancake-type bifilar winding module using a superconducting wire, comprising:

• a cylindrical main body having a wire insertion groove for winding a superconducting wire in a bifilar manner to have minimal inductance, in which the wire insertion groove has a depth greater than a width of the superconducting wire and a radius of curvature greater than a predetermined value, and being structured to guide the superconducting wire from one side to another side of the body;
• a cylindrical supporting base having at least one block fixing notch and being disposed under the main body;
• and
• a copper block serving as an electrical terminal, which is installed and fixed to the block fixing notch of the supporting base for connecting the superconducting wire to a terminal portion thereof.