Bus bar unit, stator, and motor

A bus bar assembly applicable to a stator including a two-system connection configuration, the bus bar assembly comprising:

• a bus bar holder on one side in an axial direction of a stator core located around a center axis of the stator;
• and
• plate-shaped conductor bus bars fixed to the bus bar holder;
• wherein
• the bus bars include:
• a first U-phase bus bar and a second U-phase bus bar defining a U-phase bus bar group;
• a first V-phase bus bar and a second V-phase bus bar defining a V-phase bus bar group;
• and
• a first W-phase bus bar and a second W-phase bus bar defining a W-phase bus bar group;
• each of the bus bars includes a main line portion extending in a plane perpendicular or substantially perpendicular to a center axis in a posture in which a plate surface is oriented in the axial direction, and a connection terminal portion connected to an end portion of the main line portion;
• and
• with a first virtual line passing through the center axis of the stator when viewed in the axial direction as a symmetry axis;
• the main line portion of the first U-phase bus bar and the main line portion of the second U-phase bus bar have a shape line-symmetric to each other;
• the main line portion of the first V-phase bus bar and the main line portion of the second V-phase bus bar have a shape line-symmetric to each other;
• and
• the main line portion of the first W-phase bus bar and the main line portion of the second W-phase bus bar have a shape line-symmetric to each other.