Stator, motor, compressor, air conditioner, and manufacturing method of stator

A manufacturing method of a stator, the method comprising the steps of:

• preparing a stator core that has a plurality of slots in a circumferential direction about an axis, the stator core having an end surface in a direction of the axis;
• attaching a first coil to the stator core so that a first winding portion and a second winding portion of the first coil are inserted into one slot of the plurality of slots and extend from the one slot to both sides in the circumferential direction on the end surface;
• and
• attaching a second coil of a different phase from the first coil, to the stator core so that a first winding portion and a second winding portion of the second coil are inserted into another slot, which is different from the one slot, of the plurality of slots and extend from the another slot to both sides in the circumferential direction on the end surface,
• wherein in the step of attaching the first coil to the stator core, the first winding portion of the first coil is disposed on an outer side in a radial direction about the axis with respect to the second winding portion of the first coil in the one slot;
• wherein in the step of attaching the second coil to the stator core, the first winding portion of the second coil is disposed on an outer side in the radial direction with respect to the second winding portion of the second coil in the another slot;
• and
• wherein the step of attaching the second coil to the stator core comprises attaching the second coil on an inner side in the radial direction with respect to the first coil.