A flat-angled coil having a three-dimensional shape for maximizing a space factor according to the present invention comprises a unit coil comprising multiple layers which are provided to surround the peripheries of teeth of a core provided on an electric motor and laminated along the longitudinal direction of the teeth of the core so as to be integrally connected to each other continuously. The unit coil is formed such that at least a part of an adjacent portion thereof, which is adjacent to another unit coil provided in the same slot formed between the surrounded teeth of the core and the teeth of an adjacent core, is non-parallel with the side surfaces of the surrounded teeth of the core.

The present disclosure relates to a motor assembly and a method for controlling the motor assembly. The motor assembly is characterized by comprising: a stator having a plurality of slots; a first coil and a second coil isolated from the first coil, the first and second coils being wound on each of the plurality of slots such that three-phase alternating currents are applied thereto; a rotor rotated by rotation magnetic fields generated by the first coil and the second coil; a first inverter unit for controlling the three-phase alternating current which is applied to the first coil in order to generate the rotation magnetic field; and a second inverter unit for controlling the three-phase alternating current which is applied to the second coil in order to generate the rotation magnetic field. Control signals for turning on and off the three-phase alternating currents applied to the first coil and the second coil are generated so as to be left-right symmetric by the first inverter unit and the second inverter unit during a preset switching cycle.

An electric motor polyphase winding pack includes a plurality of coiled conductors, each of the coiled conductors corresponding to a phase of a plurality of phases. Each of the coiled conductors has a first side and a second side. The coiled conductors are arranged in a sequence in which all of the first sides are disposed sequentially in a first layer, and all of the second sides are arranged in second layer disposed adjacent to the first layer, such that some of the first sides in the first layers and some of the second sides in the second layer correspond to each phase of the plurality of phases.

An electric motor polyphase winding pack includes a plurality of coiled conductors, each of the coiled conductors corresponding to a phase of a plurality of phases. Each of the coiled conductors has a first side and a second side. The coiled conductors are arranged in a sequence in which all of the first sides are disposed sequentially in a first layer, and all of the second sides are arranged in second layer disposed adjacent to the first layer, such that some of the first sides in the first layers and some of the second sides in the second layer correspond to each phase of the plurality of phases.

A stator includes a stator core and a stator winding installed in the stator core. The stator winding has multiple conductor segments in which a conductor is coated with an insulating film 35. The conductor segment includes an exposed portion in which the conductor is exposed at its leading end, and a covered portion in which the conductor remains coated with the insulating film. At a coil end section of the stator winding, the exposed portions of different conductor segments are engaged with each other. A depression as a plastic deformation formed by crushing at least a part of the insulating film is provided at an edge of the covered portion of the conductor segment, located closer to the leading end of the conducting wire, thereby Providing a stator capable of suppressing peeling off of the insulating film and ensuring insulation reliability of the stator winding.

A stator includes a stator core and a stator winding installed in the stator core. The stator winding has multiple conductor segments in which a conductor is coated with an insulating film 35. The conductor segment includes an exposed portion in which the conductor is exposed at its leading end, and a covered portion in which the conductor remains coated with the insulating film. At a coil end section of the stator winding, the exposed portions of different conductor segments are engaged with each other. A depression as a plastic deformation formed by crushing at least a part of the insulating film is provided at an edge of the covered portion of the conductor segment, located closer to the leading end of the conducting wire, thereby Providing a stator capable of suppressing peeling off of the insulating film and ensuring insulation reliability of the stator winding.

A stator and a manufacturing method thereof is enabled to easily determine the quality of welding produced between conductors. The stator includes a stator core and a stator winding installed in the stator core. The stator winding is configured by including multiple flat conductor segments in which conductors 34 are coated with insulating films 35, respectively. At a leading end of each of the conductor segment, an exposed portion 33 is formed in which the conductor is exposed. At a coil end section of the stator winding, a pair of exposed portions of different conductor segments are joined together by laser welding. A collective conductor width in a joining direction in which exposed portions join with each other is smaller at a laser irradiation incidence side, which is a side of the exposed portions receiving laser irradiation than that at a side opposite to the laser irradiation incidence side.

A stator and a manufacturing method thereof is enabled to easily determine the quality of welding produced between conductors. The stator includes a stator core and a stator winding installed in the stator core. The stator winding is configured by including multiple flat conductor segments in which conductors 34 are coated with insulating films 35, respectively. At a leading end of each of the conductor segment, an exposed portion 33 is formed in which the conductor is exposed. At a coil end section of the stator winding, a pair of exposed portions of different conductor segments are joined together by laser welding. A collective conductor width in a joining direction in which exposed portions join with each other is smaller at a laser irradiation incidence side, which is a side of the exposed portions receiving laser irradiation than that at a side opposite to the laser irradiation incidence side.

An electronic motor with a stator core having a plurality of holes for receiving a plurality of conductors, each conductor comprising a substantially linear body portion extending within the holes of the stator core, and a stator drive member adjacent each end of the stator core, the stator end member adjacent at least one end of the stator core including electronic control circuitry electrically coupled to at least some of the conductors. Also, a method of manufacturing an electronic motor by providing a stator with a plurality of holes having conductors within at least some of the plurality of holes, said conductors each having a substantially linear body portion extending through the stator core, and placing a drive member on each end of the stator core, at least one of the drive members provided with electronic circuitry, where the conductors are electrically coupled to the circuitry in the drive member.

An electric machine includes a core with windings positioned on the core. The windings include in-slot portions, end turns, and leads. The in-slot portions are positioned in slots of the core. The end turns extend from the in-slot portions at ends of the core. The leads extend from the in-slot portions and axially past the end turns. A bus bar assembly is positioned radially inward from the end turns. The bus bar assembly includes an arc portion, a plurality of axial lead connectors, and a plurality of axial phase terminals. The arc portion is positioned axially within the end turns. The axial lead connectors extend axially past the end turns and are connected to the leads. The axial phase terminals also extend axially past the end turns.