Electric drive systems with integrated bus bar and inter-housing barrier for work vehicles

An electric drive system for a work vehicle, the electric drive system comprising:

• an electric machine of the electric drive system;
• an inverter for providing power to the electric machine of the electric drive system;
• a bus bar electrically coupling a first electrical conductor of the electric machine to a second electrical conductor of the inverter, wherein the bus bar has a first end coupled to the first electrical conductor and a second end coupled to the second electrical conductor, the first electrical conductor located within a first enclosure and the inverter located within a second enclosure;
• an inter-housing barrier positioned between the first enclosure and the second enclosure, wherein the inter-housing barrier surrounds a segment of the bus bar and is configured to provide a fluid-tight seal that prevents fluid transfer between the first and second enclosures, wherein the inter-housing barrier includes a flange that abuts an aperture of the second enclosure and an engagement interface that is inserted into an aperture of the first enclosure;
• and
• a first enclosure gasket positioned between the engagement interface and the aperture of the first enclosure, and a second enclosure gasket interposed between the flange of the inter-housing barrier and the aperture of the second enclosure.

An electric drive system for a work vehicle, the electric drive system comprising:

• an electric machine of the electric drive system;
• an inverter for providing power to the electric machine of the electric drive system;
• a bus bar electrically coupling a first electrical conductor of the electric machine to a second electrical conductor of the inverter, wherein the bus bar has a first end coupled to the first electrical conductor and a second end coupled to the second electrical conductor, the first electrical conductor located within a first enclosure and the inverter located within a second enclosure;
• an inter-housing barrier positioned between the first enclosure and the second enclosure, wherein the inter-housing barrier surrounds a segment of the bus bar and is configured to provide a fluid-tight seal that prevents fluid transfer between the first and second enclosures, wherein the inter-housing barrier is a plug having a stop and a neck, wherein the neck is configured to be inserted into an aperture of either the first or second enclosure, and the stop is placed against the first or second enclosure.

A work vehicle having an electric drive system, the work vehicle comprising:

• an electric machine housed within a first enclosure containing a first fluid, the electric machine including first electrical conductors;
• an inverter externally mounted relative to the electric machine and housed within a second enclosure containing a second fluid, the inverter including second electrical conductors;
• and
• a bus bar assembly comprising:
• bus bars electrically coupling the first electrical conductors of the electric machine to the second electrical conductors of the inverter;
• inter-housing barriers positioned between the first enclosure and the second enclosure, wherein the inter-housing barriers surround a segment of each of the bus bars and provide a fluid-tight seal preventing transfer of the first fluid into the second enclosure and the second fluid into the first enclosure;
• wherein the inter-housing barriers each include a flange that abuts an aperture of the second enclosure and an engagement interface that is inserted into an aperture of the first enclosure;
• and
• first enclosure gaskets positioned between engagement interfaces of the inter-housing barriers and the apertures of the first enclosure, and second enclosure gaskets interposed between each of the flanges of the inter-housing barriers and the apertures of the second enclosure.

A work vehicle having an electric drive system, the work vehicle comprising:

• an electric machine housed within a first enclosure containing a first fluid, the electric machine including first electrical conductors;
• an inverter externally mounted relative to the electric machine and housed within a second enclosure containing a second fluid, the inverter including second electrical conductors;
• and
• a bus bar assembly comprising:
• bus bars electrically coupling the first electrical conductors of the electric machine to the second electrical conductors of the inverter;
• and
• inter-housing barriers positioned between the first enclosure and the second enclosure, wherein the inter-housing barriers surround a segment of each of the bus bars and provide a fluid-tight seal preventing transfer of the first fluid into the second enclosure and the second fluid into the first enclosure, wherein the inter-housing barriers comprise a plurality of plugs each being associated with one of the bus bars, each of the plugs having a stop and a neck, the neck is configured to be inserted into an aperture of either the first or second enclosure, and the stop abuts the first or second enclosure.