Abstract: A method of forming a diamond coil wound stator winding including introducing a plurality of diamond coils into a plurality of slots of a linear magazine forming a diamond coil wound stator winding, transferring the diamond coil wound stator winding into a circular cassette, and shifting the diamond coil wound stator winding from the circular cassette into a plurality of slots arranged in an inner annular surface of a stator core in a single operation.

Abstract: A rotor for an electric machine includes a shaft. A plurality of rotor laminations is mounted to the shaft. The plurality of rotor laminations includes a plurality of rotor teeth. A plurality of field coils is disposed about corresponding ones of the plurality of rotor teeth. A plurality of field coil separators extend axially along the rotor between adjacent ones of the plurality of field coils. Each of the plurality of field coil separators includes a coolant circulation system. The coolant circulation system includes a plurality of external coolant flow paths. Each of the plurality of field coil separators includes a resilient frame and an outer shell over molded onto the resilient frame, the outer shell including an outer surface.

Abstract: A stator for an electric machine includes a winding arrangement including a plurality of parallel paths. Each parallel path includes a plurality of coils arranged on the core, each coil defined by coil legs and end turns, the coil legs including left legs and right legs extending through the slots of the core and arranged in layers within the slots. The left legs and right legs of each coil are connected by first end turns at one end of the core and second end turns at an opposite end of the core. The plurality of coils of each parallel path include a first pair of adjacent coils connected in series and a second pair of adjacent coils connected in series. Additionally, an extended coil connection connects the first pair of adjacent coils and the second pair of adjacent coils in series.

Abstract: A stator for an electric machine includes a core and a multi-phase winding arrangement positioned on the core. Each phase of the winding arrangement includes a plurality of parallel paths defining a plurality of poles for the electric machine. Each parallel path includes a plurality of coils positioned on the core, each coil defined by coil legs and end turns. The coil legs include left legs and right legs extending through the slots of the core. The left legs and right legs of each coil are connected by first end turns at one end of the core and second end turns at an opposite end of the core. Each pole of the electric machine is associated with a pole slot set comprised of multiple slots on the stator core. For each pole slot set, legs for each parallel path extend through one of the slots of said pole slot set.

Abstract: A method and arrangement is disclosed herein for making a stator with 3D printed end turns. The stator includes a stator lamination stack with semi-closed slots. Straight I-pin wire segments are housed in the slots of the stator lam stack and form the in-slot segments of a stator winding arrangement. The end turns of the winding arrangement are provided by a conductive material that is 3D printed material at both axial ends of the straight I-pins. The end turns result in a winding arrangement with diamond coils that are inter-locked. The 3D printing of the end turns makes the winding arrangement possible, as the winding arrangement is configured such that it cannot be inserted into the lamination stack in a radial direction (i.e., via any slot openings at the inner diameter or outer diameter).

Abstract: A stator for an electric machine comprises a cylindrical stator core, windings positioned on the stator core, and an end disc positioned an end of the stator core. The stator core defines an inner diameter and an outer diameter. A plurality of slots are formed in the core and extend radially from the inner diameter toward the outer diameter. The windings include in-slot portions, end turns, and at least one jumper. The end disc defines a plurality of slots aligned with the slots of the stator core and at least one dog hole removed from the slots of the end disc. The at least one jumper is bent circumferentially around the dog hole and connects two of the in-slot portions of the windings.

Abstract: A rotor includes a shaft having an outer surface including a first diameter and a flange extending from the outer surface. A first plurality of laminations is arranged about the shaft. The first plurality of laminations includes an outer annular surface and an inner surface defining an opening including a second diameter that is substantially equal to the first diameter. A second plurality of laminations is arranged about the shaft and coupled to the first plurality of laminations. The second plurality of laminations include an outer annular surface portion and an inner surface portion defining a third diameter that is greater than the first diameter.

Abstract: A method of forming a diamond coil wound stator winding including introducing a plurality of diamond coils into a plurality of slots of a linear magazine forming a diamond coil wound stator winding, transferring the diamond coil wound stator winding into a circular cassette, and shifting the diamond coil wound stator winding from the circular cassette into a plurality of slots arranged in an inner annular surface of a stator core in a single operation.

Abstract: A stator for an electric machine comprises a cylindrical stator core, windings positioned on the stator core, and an end disc positioned an end of the stator core. The stator core defines an inner diameter and an outer diameter. A plurality of slots are formed in the core and extend radially from the inner diameter toward the outer diameter. The windings include in-slot portions, end turns, and at least one jumper. The end disc defines a plurality of slots aligned with the slots of the stator core and at least one dog hole removed from the slots of the end disc. The at least one jumper is bent circumferentially around the dog hole and connects two of the in-slot portions of the windings.

Abstract: A method and arrangement is disclosed herein for making a stator with 3D printed end turns. The stator includes a stator lamination stack with semi-closed slots. Straight I-pin wire segments are housed in the slots of the stator lam stack and form the in-slot segments of a stator winding arrangement. The end turns of the winding arrangement are provided by a conductive material that is 3D printed material at both axial ends of the straight I-pins. The end turns result in a winding arrangement with diamond coils that are inter-locked. The 3D printing of the end turns makes the winding arrangement possible, as the winding arrangement is configured such that it cannot be inserted into the lamination stack in a radial direction (i.e., via any slot openings at the inner diameter or outer diameter).

Abstract: A stator for an electric machine includes a core and a multi-phase winding arrangement positioned on the core. Each phase of the winding arrangement includes a plurality of parallel paths defining a plurality of poles for the electric machine. Each parallel path includes a plurality of coils positioned on the core, each coil defined by coil legs and end turns. The coil legs include left legs and right legs extending through the slots of the core. The left legs and right legs of each coil are connected by first end turns at one end of the core and second end turns at an opposite end of the core. Each pole of the electric machine is associated with a pole slot set comprised of multiple slots on the stator core. For each pole slot set, legs for each parallel path extend through one of the slots of said pole slot set.

Abstract: A rotor includes a shaft having an outer surface including a first diameter and a flange extending from the outer surface. A first plurality of laminations is arranged about the shaft. The first plurality of laminations includes an outer annular surface and an inner surface defining an opening including a second diameter that is substantially equal to the first diameter. A second plurality of laminations is arranged about the shaft and coupled to the first plurality of laminations. The second plurality of laminations include an outer annular surface portion and an inner surface portion defining a third diameter that is greater than the first diameter.

Abstract: A solenoid for a motor vehicle starter includes at least one coil wound on at least one spool, the at least one coil defines a toroidal space encircling the at least one coil. A stop member is positioned adjacent to the at least one spool. A diode holder is positioned in the toroidal space defined by the at least one coil, and a diode is positioned in the diode holder. The diode includes a cylindrical body, a first lead extending from a first end of the cylindrical body, and a second lead extending from a second end of the cylindrical body. The cylindrical body of the diode is retained by the diode holder within the toroidal space, and the first lead of the diode extends out of the toroidal space and is electrically connected to the stop member.

Abstract: A solenoid for a motor vehicle starter includes at least one coil wound on at least one spool, the at least one coil defines a toroidal space encircling the at least one coil. A stop member is positioned adjacent to the at least one spool. A diode holder is positioned in the toroidal space defined by the at least one coil, and a diode is positioned in the diode holder. The diode includes a cylindrical body, a first lead extending from a first end of the cylindrical body, and a second lead extending from a second end of the cylindrical body. The cylindrical body of the diode is retained by the diode holder within the toroidal space, and the first lead of the diode extends out of the toroidal space and is electrically connected to the stop member.