Stator, rotating electric machine, and method of manufacturing stator

A stator comprising:

• a stator core having a plurality of tooth portions;
• a slot provided between the tooth portions and accommodating a coil;
• and
• the coil accommodated in the slot,
• wherein the stator has a resin layer provided on an inner surface of the slot and made of an insulating resin composition,
• wherein a wall surface of the resin layer on an inner side of the slot is provided in parallel with a rotating shaft direction,
• wherein the resin composition contains a thermosetting resin,
• wherein the thermosetting resin has a glass transition temperature Tg of 120° C. or higher,
• wherein the resin layer has a thermal conductivity of 0.5 W/(m·K) or more,
• wherein the stator has a resin liner member accommodating the coil,
• wherein the liner member is a separate member from the coil, and
• wherein the coil that is accommodated in the slot is in a state of being accommodated in the liner member.

A method of manufacturing a stator used for a rotating electric machine, having a stator core having a plurality of tooth portions, a slot provided between the tooth portions and accommodating a coil, and the coil accommodated in the slot, comprising:

• a resin layer forming step of forming a resin layer made of an insulating resin composition on an inner surface of the slot;
• and
• a coil placing step of placing the coil in the slot provided with the resin layer,
• wherein a wall surface of the resin layer on an inner side of the slot is provided in parallel with a rotating shaft direction of the rotating electric machine,
• wherein the resin composition contains a thermosetting resin,
• wherein the thermosetting resin has a glass transition temperature Tg of 120° C. or higher, and
• wherein the resin layer has a thermal conductivity of 2 W/(m·K) or more.