Inverter AC Bus Bar Assembly

摘要

Power inverter assemblies are provided herein for use with motor vehicles. An inverter assembly may have a symmetrical structure configured to convert DC input power to AC output power. The inverter assembly may include a housing enclosing a symmetrical DC input portion, a symmetrical AC output portion, a DC link capacitor, and a gate drive portion having a pair of power modules. The symmetrical DC input portion can include a DC input bus bar sub-assembly to which the DC link capacitor is coupled, and a second DC bus bar sub-assembly that may electrically couple the DC link capacitor with the power modules. The symmetrical AC output portion may include a three phase output AC bus bar sub-assembly to which the power modules can be electrically coupled. A cooling sub-assembly may be provided for cooling the power modules with fluid transfer using a coolant.

主权项

1. A three phase output AC bus bar sub-assembly for an inverter assembly, the three phase output AC bus bar sub-assembly comprising:
three bus bars each comprising:
a bar body having a front surface and a back surface;a plurality of power module tabs spaced apart from one another so as to allow a first of the plurality of power module tabs to couple with a first power module of the inverter assembly and a second of the plurality of power module tabs to couple with a second power module of the inverter assembly, the plurality of power module tabs extending away from the back surface; andan output tab extending from the front surface; and the bar body of a first of the three bus bars is positioned behind the bar body of a second of the three bus bars and a third of the three bus bars is positioned in front of the second of the three bus bars.