The stator assembling method includes: the step of disposing a guide to restrict circumferential movement of opening jigs inserted into slots; and the step of moving coils and the opening jigs together to a second side in a radial direction relative to a stator core while guiding the opening jigs such that circumferential movement of the opening jigs is restricted by the guide, thus inserting slot-housed portions into the slots.

A coil forming apparatus includes: a coil winding jig including a plurality of comb-shaped grooves; a coil conveying mechanism that pivotally conveys the belt-shaped coil along at least a portion of the outer periphery of the coil winding jig; and guide members guide the belt-shaped coil in an arc shape along an outer periphery of the coil winding jig while being in contact with the side ends, and allow the plurality of straight portions to be inserted into a respective one of the plurality of comb-shaped grooves in a second half portion of the belt-shaped coil upon pivot conveyance. The guide members include a reforming portion in a first half portion of the belt-shaped coil upon pivot conveyance, and the reforming portion deforms and reforms the belt-shaped coil in an arc shape in a state sandwiching the side ends of the belt-shaped coil.

A stator for an electric machine of a motor vehicle, having an annular yoke, with an inner side directed inwards in the radial direction of the yoke, wherein a plurality of pole teeth are connected by form fit to the yoke on the inner side of the yoke, a stator winding which is formed as a mat and which is arranged between the pole teeth, a first cooling channel through which a cooling medium may flow and which extends in the longitudinal direction of the stator, wherein the first cooling channel is arranged in a recess, and a second cooling channel through which a cooling medium may flow, wherein the second cooling channel is arranged between two adjacent pole teeth between an inner side of the stator winding directed inwards in the radial direction of the stator and a pole shoe of the pole tooth.

A method of inserting a winding into a stator having skewed slots formed on an inside diameter of a stator lamination includes forming a conductor having a plurality of slot segments, loading the conductor into a plurality of skewed slot elements of a linear cartridge having a first end, a second end, and a linear axis connecting the first end and the second end, the plurality of skewed slot elements being angled relative to the linear axis, transferring the conductor from the linear cartridge to a plurality of skewed slot members formed in an outside diameter of a rotary cartridge, inserting the rotary cartridge into the inside diameter of the stator lamination, and shifting the conductor from the rotary cartridge into the skewed slots of the stator.

A coil insertion device includes coil diameter expanders, the coil diameter expanders being configured to insert a coil assembly in a wound state into slots of a stator core by expanding the coil assembly in diameter from inside of the stator core, each of the coil diameter expanders includes: a coil presser that is arranged inside the coil assembly and presses coil end portions of the coil assembly outward from inside to expand the coil end portions in diameter; and a restrictor that is arranged outside the coil assembly, restricts outward movement of the coil end portions expanded in diameter by the coil presser, and sandwiches the coil end portions of the coil assembly inserted in the slots with the coil presser.

A coil insertion guide device includes a plurality of guide portions arranged over each of axially opposite end faces of a stator core including insulating members in slots, the guide portions being configured to guide movement of a strip-shaped coil insertable into the slots along a radial direction of the stator core, the strip-shaped coil includes a plurality of straight portions insertable into the slots and a plurality of coil end portions each connecting adjacent straight portions to each other among the plurality of straight portions, and in each of the guide portions, a shoulder portion that comes into contact with the coil end portion of the strip-shaped coil has a convex curved surface that is continuous from a top to a maximum width portion.

An apparatus for assembling a coil includes a blade inserted into a slot of a stator core in a state where insulating paper is inserted into the slot. In a method for assembling the coil, the insulating paper is inserted into the slot of the stator core, the blade is inserted into the slot into which the insulating paper is inserted, the coil is inserted into the slot into which the blade is inserted, the coil being inserted in a direction opposite to a direction in which the blade is inserted. When the coil is inserted into the slot, the blade is pulled out from the slot along with the insertion of the coil into the slot.

A liquid-cooled rotating electric machine may include an inner stator and outer rotor configured to rotate about the stator. A hub may be disposed within the inner stator and a heat exchanger may be disposed in the hub. The heat exchanger may be configured to enable the flow a liquid through it to dissipate heat from the stator.

A radial flux electric machine includes a rotor configured to rotate about an axis of rotation, a plurality of electromagnetic coils, and a stator. The stator may include an annular stator ring extending about the axis of rotation and a plurality of multi-part teeth circumferentially arranged on the stator ring. Each multi-part tooth of the plurality of multi-part teeth may include a core tooth-portion integrally formed with the stator ring and at least one additional tooth-portion separate from the stator ring. Each coil of the plurality of electromagnetic coils may be mounted on a different multi-part tooth of the plurality of multi-part teeth such that each coil surrounds a corresponding core tooth-portion of the multi-part tooth with a gap between the coil and the core tooth-portion. The at least one additional tooth-portion may be disposed in the gap.

A method for inserting electrical conductors in slots of a component, wherein, in sections, an insulating film has two legs which are connected by a V-shaped or folded tip region. The legs lie against the slot edges such that damage to the electrical conductors by edges of the slot during the insertion thereof into the slots is avoided. The invention further relates to an associated device, to an associated cutting tool, and to an associated use.