ELECTRIC DRIVE UNIT
An electric drive unit having a multi-phase electric motor and an inverter that controls power to the electric motor. The inverter has an inverter mount, a plurality of power semiconductors that are mounted to the inverter mount, and a plurality of busbars. Each of the busbars has first and second busbar portions, each having a body and a plurality of fingers. The fingers on the first and second busbar portions are mechanically and electrically coupled to opposite sides of terminals on corresponding ones of the power semiconductors.
1 . An electric drive unit comprising:
a housing assembly that defines a capacitor cavity and a first output shaft bore;
a motor received in the housing assembly;
a transmission received in the housing assembly, the transmission being driven by the motor;
a first output shaft driven by the transmission, the first output shaft extending through the output shaft bore; and
an inverter housed in the housing assembly and being electrically coupled to the motor, the inverter including a field capacitor that is received in the capacitor cavity;
wherein the housing assembly includes a heat sink that is disposed in the capacitor cavity, the heat sink being configured to receive heat that is rejected from the field capacitor.
2 . The electric drive unit of claim 1 , wherein the field capacitor directly abuts the heat sink.
3 . The electric drive unit of claim 1 , wherein a thermally conductive paste is disposed between the field capacitor and the heat sink.
4 . The electric drive unit of claim 1 , further comprising:
a differential assembly received in the housing assembly, the differential assembly having a differential input member, which is coupled to a transmission output member of the transmission for rotation therewith, and a pair of differential output members; and
a second output shaft;
wherein the first output shaft is coupled to a first one of the differential output members for rotation therewith, and wherein the second output shaft is coupled to a second one of the differential output members for rotation therewith.