Rotary electric machine and vehicle

A rotary electric machine comprising:

• a stator around which a plurality of coils are wound;
• and
• a rotor which is supported to be freely rotatable with a predetermined gap with respect to the stator,
• wherein the coil is configured with two coil conductors each of which is inserted from opposite side of the slot, and has at least one connection portion in which the two coil conductors are connected, per turn in a slot of the stator,
• at the connection portion, the two coil conductors each forms L-shaped step including a contact surface faced to radial direction and a step surface faced to axial direction at the connection portion, and are fitted with another coil conductors so as to mutually fill the steps,
• a conductor in an upper half of the coil and a conductor in a lower half of the coil are configured to have the L-shaped step shape that allows contact with each other on the contact surfaces of the coil conductors,
• the contact surfaces that come into contact with each other in the slot are electrically conducted,
• a thermally expandable sheet capable of pressurizing the coil conductor in a radial direction of the stator is arranged to cover the coil conductor in the slot,
• the thermally expandable sheet expands and presses the contact surfaces of two or more coil conductors, and
• two or more coil conductors per winding are inserted to each of one side of the slot.