ALTERNATING-CURRENT GENERATOR FOR VEHICLE

摘要

The purpose of the present invention is to obtain an alternating-current generator for a vehicle such that the axial dimensions of a rectification device can be reduced while suppressing degradation of the reliability of rectification elements and cooling performance of the generator. In the case of this rectification device (30, 30A): a circuit board (40, 40A) is disposed between a first rectification element holding section (32) and a second rectification element holding section (36); first rectification elements (28) held in the first rectification element holding section are connected to first rectification element connection parts (42) of the circuit board via axially extended first lead electrodes (28b); second rectification elements (29) held in the second rectification element holding section are connected to second rectification element connection parts (41) of the circuit board via axially extended second lead electrodes (29b); the circuit board is configured such that when viewed from an axial direction, only housing connection parts (44), stator winding connection parts (43), and a voltage regulator connection part (47) protrude from the first rectification element holding section and second rectification element holding section; multiple first inner-diameter-side fins (33a) are formed on the inner diameter side of the first rectification element holding section; and multiple second outer-diameter-side fins (37a) are formed on the outer diameter side of the first rectification element holding section.