A manufacturing method of a coil includes: a step of winding a round wire conductor to form a round wire coil; and a step of pressing the round wire coil with a molding metal mold to form a flat square wire coil having one turn in a substantially rectangular shape.

A manufacturing method of a coil includes: a step of winding a round wire conductor to form a round wire coil; and a step of pressing the round wire coil with a molding metal mold to form a flat square wire coil having one turn in a substantially rectangular shape.

A motor includes a coupling portion in which common wires of a plurality of coil groups are electrically connected and coupled, the coupling portion extends from a radial inside to a radial outside or vice versa in a slot that is a portion between teeth adjacent to each other in a circumferential direction, and the motor includes a sealing portion that seals at least the coupling portion.

A motor includes a coupling portion in which common wires of a plurality of coil groups are electrically connected and coupled, the coupling portion extends from a radial inside to a radial outside or vice versa in a slot that is a portion between teeth adjacent to each other in a circumferential direction, and the motor includes a sealing portion that seals at least the coupling portion.

A stator includes an annular stator core, a coil, an insulating resin, and a positioning component (first positioning component). The stator core includes a plurality of slots that are arranged in an annular shape and extend through the stator core in an axial direction. The coil includes an insertion portion that passes through the slots. The insulating resin includes a continuous filling portion that is located in a center portion in the axial direction inside a slot of the plurality of slots and that continuously fills a space between an inner wall of the slot and the insertion portion. The positioning component (first positioning component) positions the insertion portion in a state where, on one side in the axial direction with respect to the continuous filling portion, at least a portion of the positioning component enters between the inner wall of the slot and the insertion portion.

A stator includes an annular stator core, a coil, an insulating resin, and a positioning component (first positioning component). The stator core includes a plurality of slots that are arranged in an annular shape and extend through the stator core in an axial direction. The coil includes an insertion portion that passes through the slots. The insulating resin includes a continuous filling portion that is located in a center portion in the axial direction inside a slot of the plurality of slots and that continuously fills a space between an inner wall of the slot and the insertion portion. The positioning component (first positioning component) positions the insertion portion in a state where, on one side in the axial direction with respect to the continuous filling portion, at least a portion of the positioning component enters between the inner wall of the slot and the insertion portion.

A method of fabricating an HVRM conductor is disclosed. The method may include wrapping a conductor bundle with a resin-rich mica tape to form a wrapped bundle and placing the wrapped bundle in a sleeve comprising a liquid-impermeable material to form a covered bundle. The method may also include at least partially submerging the covered bundle in a vat of liquid, and thereafter placing the conductor bundle in a press.

A method of fabricating an HVRM conductor is disclosed. The method may include wrapping a conductor bundle with a resin-rich mica tape to form a wrapped bundle and placing the wrapped bundle in a sleeve comprising a liquid-impermeable material to form a covered bundle. The method may also include at least partially submerging the covered bundle in a vat of liquid, and thereafter placing the conductor bundle in a press.

A method for producing a component for an electrical machine, the component has a magnetic core with at least one groove which receives at least one wire winding, runs parallel to a longitudinal central axis of the component and completely penetrates the magnetic core. The component is aligned during introduction of an impregnating agent into the at least one groove in such a way that the impregnating agent is forced into the at least one groove in the direction of the longitudinal central axis by the influence of gravity. A temperature of the at least one wire winding is initially set to a lower first temperature selected to reduce a viscosity of the impregnating agent and then to a higher second temperature selected to increase the viscosity of the impregnating agent by applying an electric current during introduction of the impregnating agent into the at least one groove.

A method for producing a component for an electrical machine, the component has a magnetic core with at least one groove which receives at least one wire winding, runs parallel to a longitudinal central axis of the component and completely penetrates the magnetic core. The component is aligned during introduction of an impregnating agent into the at least one groove in such a way that the impregnating agent is forced into the at least one groove in the direction of the longitudinal central axis by the influence of gravity. A temperature of the at least one wire winding is initially set to a lower first temperature selected to reduce a viscosity of the impregnating agent and then to a higher second temperature selected to increase the viscosity of the impregnating agent by applying an electric current during introduction of the impregnating agent into the at least one groove.