Terminal unit of vehicle traction motor and method of manufacturing the same

A terminal of a vehicle traction motor, comprising:

• a terminal mold;
• an insulator;
• bus bars positioned within the terminal mold;
• and
• insulation spacers positioned alternately with respect to the bus bars such that each insulation spacer among the insulation spacers is positioned between two bus bars among the bus bars,
• wherein a diameter of each bus bar among the bus bars is different from diameters of other bus bars among the bus bar,
• wherein the bus bars comprise an inner bus bar, middle bus bars, and an outer bus bar,
• wherein each of the middle bus bars comprises a first surface, a second surface, a third surface, and a fourth surface, and
• wherein the first surface is in contact with one of the insulation spacers, the second surface is in contact with the one of the insulation spacers, the third surface is in contact with another of the insulation spacers, and the fourth surface is in contact with the insulator.