A coil device includes a winding core, a wire, and a terminal fitting. The winding core is made of a magnetic material and includes a flange. The wire is wound around the winding core. The terminal fitting is attached to a part of an outer surface of the flange. The terminal fitting includes a contact part and a protrusion plate part. The contact part is contacted with the outer surface of the flange. The protrusion plate part is formed integrally with the contact part and protrudes away from the flange. The protrusion plate part includes a wire connection surface and a main mounting surface. A lead end of the wire is connected to the wire connection surface. The main mounting surface is located opposite to the wire connection surface and is connectable to an external circuit.

Disclosed is a bifilar winding system for the manufacture of poloidal field superconducting magnets for nuclear fusion, including two superconducting coil winding production lines which are symmetrically arranged, a dropping fixture, a rotary platform and a winding mold, and an automatic control system. Each of the two winding production lines includes a conductor unwinding device, a straightener, an ultrasonic cleaning machine, a sandblasting and cleaning machine, a bending machine, an inter-turn insulation taping machine. During the winding of a coil, a superconducting conductor is unwound by the conductor unwinding device under the control of the automatic control system, then straightened, ultrasonically cleaned, sandblasted and cleaned, and bent into a desired radius, then wrapped with multiple layers of insulating tape by the inter-turn insulation taping machine, and finally fixed, by the dropping fixture, precisely on the rotary platform at a correct position within a profile of the winding mold.

Disclosed is a bifilar winding system for the manufacture of poloidal field superconducting magnets for nuclear fusion, including two superconducting coil winding production lines which are symmetrically arranged, a dropping fixture, a rotary platform and a winding mold, and an automatic control system. Each of the two winding production lines includes a conductor unwinding device, a straightener, an ultrasonic cleaning machine, a sandblasting and cleaning machine, a bending machine, an inter-turn insulation taping machine. During the winding of a coil, a superconducting conductor is unwound by the conductor unwinding device under the control of the automatic control system, then straightened, ultrasonically cleaned, sandblasted and cleaned, and bent into a desired radius, then wrapped with multiple layers of insulating tape by the inter-turn insulation taping machine, and finally fixed, by the dropping fixture, precisely on the rotary platform at a correct position within a profile of the winding mold.

A winding apparatus for a coil component in which wires are wound around a core. The winding apparatus includes a wire position support including wire route holes in which the wires are inserted, a wire feeder that feeds the wires to the wire position support such that tension is applied to the wires, a winding driver that orbitally revolves the wire position support around the core such that the wires are wound around the core while twisted, a rotator that rotates the core, and a controller that controls the winding driver and the rotator. The controller controls a rotation direction of the core with regard to an orbital revolution direction of the wire position support and an orbital revolution speed of the wire position support to prevent generation of a kink of a wire between a wire feeder and the wire position support.

Provided is an inductor winding method and an inductor winding device. The inductor winding method comprises steps of: A. dividing turns of coil of each winding of the inductor into a first winding and a second winding based on a preset ratio; B. winding the first winding on one of multiple magnetic columns, and winding the second winding on another one of the multiple magnetic columns which is different from the magnetic column on which the first winding is wound; and C. performing step A and step B cyclically until all the windings of the inductor are wound. With a coupling inductor having interleaving-wound structure, power frequency magnetic fluxes generated by magnetic lines in magnetic columns counteract one another, thereby solving the problem of high magnetic flux density in a magnetic core while achieving certain leakage inductance.

Provided is an inductor winding method and an inductor winding device. The inductor winding method comprises steps of: A. dividing turns of coil of each winding of the inductor into a first winding and a second winding based on a preset ratio; B. winding the first winding on one of multiple magnetic columns, and winding the second winding on another one of the multiple magnetic columns which is different from the magnetic column on which the first winding is wound; and C. performing step A and step B cyclically until all the windings of the inductor are wound. With a coupling inductor having interleaving-wound structure, power frequency magnetic fluxes generated by magnetic lines in magnetic columns counteract one another, thereby solving the problem of high magnetic flux density in a magnetic core while achieving certain leakage inductance.

A winding apparatus includes a first rotation body, and a wire position support, inserted in an insertion hole outside a center axis of the first rotation body, and including first and second wire route holes in which first and second wires are inserted, respectively. The winding apparatus further includes a second rotation body having a center axis and separated from the first rotation body, a shaft body outside the center axis, a synchronous rotation component coupling the wire position support and the shaft body while unrotatably fixed to the wire position support, a winding driver that synchronously rotates the first and second rotation bodies, and inner bearings disposed between the wire position support in the insertion hole and the first rotation body, in which the wire position support is journaled with respect to the first rotation body. Thus, the wire position support revolves orbitally about a core without rotating.

A winding apparatus includes a first rotation body, and a wire position support, inserted in an insertion hole outside a center axis of the first rotation body, and including first and second wire route holes in which first and second wires are inserted, respectively. The winding apparatus further includes a second rotation body having a center axis and separated from the first rotation body, a shaft body outside the center axis, a synchronous rotation component coupling the wire position support and the shaft body while unrotatably fixed to the wire position support, a winding driver that synchronously rotates the first and second rotation bodies, and inner bearings disposed between the wire position support in the insertion hole and the first rotation body, in which the wire position support is journaled with respect to the first rotation body. Thus, the wire position support revolves orbitally about a core without rotating.

A winding apparatus includes a wire position support including a first feeder including a first wire route hole in which a first wire is inserted and a second feeder including a second wire route hole in which a second wire is inserted, and a winding driver that orbitally revolves the wire position support around a core. The wire position support includes a regulator that regulates movement of the first wire and the second wire such that, when the wire position support revolves orbitally around the core, such that the first wire passes on an opening end surface from which the second wire is fed in the second wire route hole while the second wire passes on an opening end surface from which the first wire is fed in the first wire route hole. Accordingly, the wires are prevented from being entangled in the wire position support.

A winding apparatus includes a wire position support including a first feeder including a first wire route hole in which a first wire is inserted and a second feeder including a second wire route hole in which a second wire is inserted, and a winding driver that orbitally revolves the wire position support around a core. The wire position support includes a regulator that regulates movement of the first wire and the second wire such that, when the wire position support revolves orbitally around the core, such that the first wire passes on an opening end surface from which the second wire is fed in the second wire route hole while the second wire passes on an opening end surface from which the first wire is fed in the first wire route hole. Accordingly, the wires are prevented from being entangled in the wire position support.