STATOR, STATOR MANUFACTURING METHOD, AND ROTARY ELECTRIC MACHINE

摘要

A flat wire (36) that forms a stator coil (16) has an insertion portion (22) that is inserted into a slot (14), and a coil end portion (30) that protrudes from an end portion of the stator coil (16). An insulating layer of an adjacent portion (38) that is adjacent to a flat wire (36) of a different phase at the coil end portion (30) is thicker than an insulating layer in another region. Setting the thickness of the insulating layer of each part according to the required insulation performance in this way makes it possible to make the overall insulating layer thinner, and improve the in-slot space factor of the stator coil while ensuring insulation performance.

主权项

1. A stator comprising:
a stator core in which slots are formed a predetermined distance apart in a circumferential direction; and a polyphase stator coil formed by a first flat wire of a first phase and a second flat wire of a second phase that differs from the first phase, the first flat wire and the second flat wire being coated with an insulating layer, and the polyphase stator coil being wound around the stator core through the slots, wherein the first flat wire and the second flat wire each have an insertion portion that is inserted into the slots, the first flat wire and the second flat wire each have a coil end portion that protrudes from an end portion of the stator core; a first insulating layer of an adjacent portion of the first flat wire is thicker than a second insulating layer of the first flat wire, the adjacent portion is a portion adjacent to the second flat wire at the coil end portion of the first flat wire, and the second insulating layer is in a region other than the coil end portion of the first flat wire; and the first insulating layer is formed by applying or dripping insulation material.