Rotary electric machine and assembling method thereof

A rotary electric machine, comprising:

• a housing having a first accommodating space;
• a stator disposed in the first accommodating space, and comprising a stator core, a plurality of windings, a circuit board and a plurality of conductive pillars, wherein the stator core has a hollow portion, the plurality of windings are wound around the stator core, the circuit board is fixed on a top of the stator core, and the plurality of conductive pillars are electrically coupled with the circuit board and disposed on a first surface of the circuit board, respectively;
• a rotor comprising a shaft and an end cover, wherein the shaft is disposed in the hollow portion of the stator and is driven to rotate by the stator, the end cover is fixed on a top of the housing, and the end cover has a notch, wherein a position of the notch corresponds to the plurality of conductive pillars, and the plurality of conductive pillars partially penetrate through the notch, respectively;
• an outer cover connected to the end cover, wherein the end cover is disposed between the outer cover and the housing, and the outer cover comprises a second accommodating space and a connector;
• and
• a plurality of power cables disposed in the second accommodating space, wherein two ends of each of the plurality of power cables are electrically coupled with a corresponding one of the plurality of conductive pillars and the connector, respectively.