Stator for a vehicular rotary electric machine and a manufacturing method thereof

A stator for a vehicular rotary electric machine, comprising:

• a stator core having a plurality of slots;
• and
• a multi-phase stator winding constructed of a pluarality of electrical conductors connected together, said electrical conductors being accommodated radially side-by-side within said slots and electrically insulated from each other, and having conductor ends extending to an outside of said slots and being bonded together to form a coil end, wherein
• a first electrical conductor at the coil end has a bond area end to be bonded to a second electrical conductor, the second electrical conductor adjoining the first electrical conductor in a radial direction, said bond area end being provided with a protrusion protruding toward a bond area of the second electrical conductor, said protrusion is formed by offsetting said end toward the bond area of the second electrical conductor.

A stator for a vehicular rotary electric machine comprising:

• a stator core having a plurality of slots;
• and
• a multi-phase stator winding constructed of a plurality of electrical conductors connected together, said electrical conductors being accommodated radially side-by-side within said slots and electrically insulated from each other, and having conductor ends extending to an outside of said slots and being bonded together to form a coil end, wherein
• a first electrical conductor accommodated in at least one layer in said slots is formed with a protrusion at an end that includes a bond area to be bonded to a second radially adjacent electrical conductor at said coil end, and
• a third electrical conductor accommodated in at least one of the other layers in said slots crosses the second radially adjacent electrical conductor at said coil end at least one point and is formed with a radial indentation in a side face opposite to the second electrical conductor at any of the at least one point, said at least one layer is either an innermost or an outemost layer in said slots, and said at least one of the other layers is a layer other than the innermost and the outermost layers in said slots.