A stator for an electric machine includes a stator core having a plurality of slots formed therein and a multi-phase winding arrangement positioned on the stator core. The winding arrangement includes a plurality of cascaded conductors arranged in layers of the slots, the layers defining multiple layer pairs. The plurality of cascaded conductors form a plurality of parallel paths per phase, each of the parallel paths making multiple revolutions of the core with each revolution occurring within a layer pair. For each layer pair, a number of weaves (N) are formed between a first parallel path and a second parallel path in said layer pair, wherein N is greater than or equal to two.

A conductor forming apparatus that forms a wave winding coil group by folding a conductor, in which the conductor forming apparatus includes: a folding jig that is arranged on an inside of a folding direction of the conductor, the folding jig including a support plate with a tip serving as a starting point for folding the conductor, and a plurality of guide protrusions arranged on a side of the tip of the support plate so as to hold the conductor before folding from both sides in a width direction, the plurality of guide protrusions each including a guide surface that can guide a folding operation of the conductor from the start of folding.

The present disclosure provides a system for inserting insulation strips into slots in a wound stator and a method therefor. The system includes a first provider, a second provider and an inserting component. The first provider is configured to provide a first insulation strip. The second provider is configured to provide a second insulation strip. The inserting component is configured to simultaneously insert the first insulation strip and the second insulation strip spacing apart from the first insulation strip into two slots of the wound stator, respectively. The present disclosure further provides a system for manufacturing a stator core. The system includes a winding mechanism and at least one positioning component. The winding mechanism is configured to wind and release a sheet having several notches at intervals. The at least one positioning component is located under the winding mechanism and corresponds to the notches.

A coil forming apparatus includes: a coil winding jig that winds the belt-shaped coil, the coil winding jig including a plurality of comb-shaped grooves on an outer periphery thereof; 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 while being in contact with the side ends. The guide members guide the belt-shaped coil so as to be in an arc shape having a diameter smaller than an outer diameter of the coil winding jig in a second half portion of the belt-shaped coil upon pivot conveying, and allow the plurality of straight portions to be inserted into a respective one of the plurality of comb-shaped grooves of the coil winding jig.

The disclosure provides a device and a method for manufacturing a wire for a wound stator of an automotive generator. The wire includes a core and a coating surrounding the core. The wire manufacturing device includes a coating removing component, a movable holding component, a deforming component and a flattening component. The coating removing component is configured for removing the coating at a first position. The movable holding component is configured for holding and moving the wire from a first position to a second position. The deforming component is configured for deforming the wire into a waved shape. The flattening component is configured for flattening several parts of the wire that are spaced apart from each other.

The present disclosure provides an electrical connection cap of a stator. The electrical connection cap includes a housing and at least one connection sheet. The housing has a first opening and a second opening. The at least one connection sheet is embedded within the housing and has a first receiving part positioned in the first opening, and a second receiving part positioned in the second opening.

The present disclosure provides a system and a method for inserting a wire having a wavy shape into a stator core. The system includes a rotating receiver, a confining component, an expanding component and a pressing component. The rotating receiver is for rotating around an axis and receiving the wire. The rotating receiver includes multiple slots circumferentially disposed thereon. The slots extend along the axis. The confining component is for confining two adjacent linear segments of the wire separate within a space defined by the confining component. The expanding component is for adjusting the two adjacent linear segments so that they are separated from each other by a predetermined interval inside the space. The pressing component is for pressing the two linear segments into two of the multiple slots.

Apparatuses and method for manufacturing coil members (230, 250) for insertion in slots of a core of an electric dynamo machine, wherein the coil members (230, 250) are formed by bending portions of an electric conductor (10). Portions of conductor of a predetermined length are fed through an aperture (80), where at least one engagement member (51) can move to engage and bend the conductor (10) so as to form the configuration of the coil member (230, 250).

A wave winding device includes a wire outlet nozzle arrangement through which a winding wire or a plurality of winding wires is fed. It further includes a shaping core at least rotatably displaceable relative to the wire outlet nozzle arrangement, on which the winding wire or the winding wires is or are windable. The wave winding device further includes a bending aid deliverable to the winding wire, which is designed to bend a section of a winding wire fed from the wire outlet nozzle arrangement before the section is placed on the shaping core.

A coil for a rotary electric machine is mounted in a plurality of slots of a stator core having the slots in a circumferential direction. An overlapping coil-type wave winding coil constituted by a coil wire having a plurality of slot accommodating portions accommodated in the slots and a plurality of coil end portions interconnecting, in a chevron shape, the slot accommodating portions next to each other outside the slots in an axial direction of the stator core constitutes the coil. At least two layers of the coil wire are connected by a continuous wire-based connecting portion, folded back in the connecting portion, and stacked.