Rotary electric machine

摘要

A metal plate is insert-molded into a case so as to be exposed inside a B terminal mounting aperture so as to overlap with a busbar, a B terminal bolt is press-fitted from an opposite side from the busbar into a press-fitting aperture that is formed on the portion of the metal plate that is exposed inside the B terminal mounting aperture, a spacer and a nut are mounted onto a shaft portion of the B terminal bolt, and the nut is electrically connected to the busbar by the busbar being pressed and held between the spacer and the nut by a fastening force from the nut.

主权项

1. A rotary electric machine comprising:
a front bracket and a rear bracket; a rotor that includes:
a field core; anda field winding that is mounted onto said field core,said rotor being rotatably disposed by fixing said field core onto a rotating shaft that is rotatably supported by said front bracket and said rear bracket; a stator that includes:
an annular stator core that is held between said front bracket and said rear bracket from two axial ends so as to be disposed so as to surround said rotor; anda stator winding that is mounted onto said stator core; an inverter assembly that includes:
a plurality of power modules that perform power conversion between direct-current power and alternating-current power;a heatsink that is formed so as to have a flat shape that has a central aperture, and that is disposed so as to be perpendicular to said rotating shaft such that a first surface of said heatsink faces axially outward and such that said rotating shaft passes through said central aperture, said plurality of power modules being mounted onto said first surface of said heatsink so as to line up circumferentially;an insulating resin case that is fixed to said first surface of said heatsink; anda busbar that is insert-molded into said case so as to be exposed inside a B terminal mounting aperture that is formed on said case so as to be electrically connected to positive electrode input terminals of said plurality of power modules; and a B terminal bolt that is electrically connected to said busbar,wherein:
a metal plate is insert-molded into said case so as to be exposed inside said B terminal mounting aperture so as to overlap with said busbar; said B terminal bolt is press-fitted from an opposite side from said busbar into a press-fitting aperture that is formed on said portion of said metal plate that is exposed inside said B terminal mounting aperture; a nut is mounted onto a shaft portion of said B terminal bolt; and said nut is electrically connected to said busbar by said busbar being pressed and held between said metal plate and said nut by a fastening force from said nut.