| 摘要 |
The invention concerns a rotating electrical machine, in particular an alternator or an alterno-starter for a motor vehicle, comprising: a rotor ( 1 ) centered and fixed on a rotating shaft ( 2 ) supported by at least one rear bearing ( 4 ), the rear bearing ( 4 ) including radial cooling fluid outlets ( 4 a , 4 d); a stator ( 3 ) enclosing the rotor, the stator including a field coil ( 7 ) including windings constituting phases of the electrical machine; an electronic power circuit ( 15 ) connected to the windings of the stator phases; a heat dissipation bridge ( 16 ) including a first surface whereon is mounted the electronic power circuit and a second surface, opposite said first surface and oriented towards the rear bearing, said second surface forming a longitudinal wall of a passageway ( 17 ) for cooling fluid circulation, another longitudinal wall of said passageway ( 17 ) being formed by the rear bearing ( 4 ) supporting the stator wherein the second surface of the heat dissipating bridge ( 16 ) comprises cooling means ( 18 ) arranged in the fluid circulation passage ( 17 ). |
