Patent ID: 6657331
Filing Date: 2003-12-02
Classification: H02K

Abstract:
An automotive alternator comprising:a stator having a stator core formed with slots extending axially at a predetermined pitch in a circumferential direction and a stator winding installed in said stator core; a rotor rotatably disposed on an inner circumferential side of said stator; and a bracket for supporting said stator and said rotor, wherein a coil end group of said stator winding is constructed such that coil ends folded back outside said slots at an end surface of said stator core are arranged circumferentially, wherein a predetermined region of outer surfaces of said coil ends in a radial direction of said stator core forms a continuous circumferentially-smooth heat-conducting surface, said outer surfaces facing radially outwards from said stator core and extending from a vicinity of said end surface of said stator core to apex portions of said coil ends, and wherein a distribution channel for a liquid coolant is disposed for absorbing heat generated in said stator and conducted from said heat-conducting surface.