Rotating electric machine and method for manufacturing the rotating electric machine

1. A stator for a rotating electric machine comprising:

a stator core having a plurality of slots aligned along a circumferential direction; and

a stator coil with an insulation coat inserted into the slots of the stator core;

wherein the stator coil includes:

main coils of a plurality of phases in which a plurality of segment coils each having a rectangular cross-section wire formed into a substantially U-shaped wire in advance is connected to each other;

first sub-coils each having a lead wire led from the slots and attached with an AC terminal, and connected to one end of the respective main coils; and

second sub-coils each having a neutral wire led from the slots, and connected to the other end of the respective main coils;

wherein the lead wire and the neutral wire are each formed of a wire with a bend structure having a plurality of straights and bends;

wherein particular slots of the slots into which the respective second sub-coils are inserted are displaced from each other by a given slot interval;

wherein the bends are formed on a coil end of the stator coil;

wherein the main coil of each phase is configured by connecting two divided main coils to each other by a bridge coil;

wherein the bridge coil includes a connection area led to an external of the slots over two of the slots; and

wherein the connection area is formed of a wire with a bend structure having a plurality of straights and bends.

2. A stator for a rotating electric machine comprising:

a stator core having a plurality of slots aligned along a circumferential direction; and

a stator coil with an insulation coat inserted into the slots of the stator core;

wherein the stator coil includes:

main coils of a plurality of phases in which a plurality of segment coils each having a rectangular cross-section wire formed into a substantially U-shaped wire in advance is connected to each other;

first sub-coils each having a lead wire led from the slots and attached with an AC terminal, and connected to one end of the respective main coils; and

second sub-coils each having a neutral wire led from the slots, and connected to the other end of the respective main coils;

wherein the lead wire and the neutral wire are each formed of a wire with a bend structure having a plurality of straights and bends;

wherein particular slots of the slots into which the respective second sub-coils are inserted are displaced from each other by a given slot interval;

wherein the bends are formed on a coil end of the stator coil; and

wherein an enamel coating is formed on a wire area where the straights and the bends are formed.