ROTARY ELECTRIC MACHINE STATOR AND ROTARY ELECTRIC MACHINE PROVIDED WITH SAME

• Main Authors: SHIMIZU, Hisaya, HASHIMOTO, Mitsue, FUKUDA, Tomohiro, KONNO, Takeshi, NAKAYAMA, Kenichi, SHIMADA, Yasuhiro, ONOSE, Shin
• Format: Patent
• Language: English; French; German
• Published: 02.06.2021
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERATION

An object of the present invention is to provide a stator of a rotary electric machine of which miniaturization, high output, and cost reduction are balanced at a higher level than the related art, and a rotary electric machine including the stator. Provided is a stator of a rotary electric machine in which a stator coil is wound around a stator core. The stator coil includes a welding portion of segment conductors formed in a region of an end portion of the stator coil; each of the segment conductors includes an exposed conductor wire portion in which an insulating coating formed on an outer periphery of a conductor wire is removed in a vicinity of the welding portion; the exposed conductor wire portion on at least one side of a pair of the segment conductors forming the each welding portion includes, in a longitudinal direction of the conductor wire, a root portion adjacent to the insulating coating, a transition portion for offsetting a center axis of the conductor wire in a radial direction by a predetermined amount of displacement; a bonding portion offset in a radial direction with respect to the root portion by a predetermined amount of displacement and a boundary portion between the root portion and the transition portion and a boundary portion between the transition portion and the bonding portion have pressing marks; and the predetermined amount of displacement is "1 ± 0.4" times or "2 ± 0.4" times a thickness of the insulating coating.