Rotary electric machine

1. A rotary electric machine comprising:

a rotor which has two poles, and

a stator in which eighty four slots are formed,

wherein a first coil piece denoted by t and a second coil piece denoted by b are disposed in each slot of the stator;

the first coil piece and the second coil piece both form a six phase belt which consists of a U phase+belt, a U phase−belt, a V phase+belt, a V phase−belt, a W phase+belt, and a W phase−belt;

the first coil piece which forms the six phase belt is referred to as a conductor U+nt, a conductor W−nt, a conductor V+nt, a conductor U−nt, a conductor W+nt, a conductor V−nt, where n is used to denote a natural number of 1 to 14;

and the second coil piece is referred to as a conductor U+nb, a conductor W−nb, a conductor V+nb, a conductor U−nb, a conductor W+nb, and a conductor V−nb, where n is used to denote a natural number of 1 to 14;

a conductor U+1t to a conductor U+14t, a conductor U−1b to a conductor U−14b, a conductor U+1b to a conductor U+14b, and a conductor U−1t to a conductor U−14t form a four row parallel winding wire structure of U phase which consists of a first U phase series circuit, a second U phase series circuit, a third U phase series circuit, and a fourth U phase series circuit;

a conductor V+1t to a conductor V+14t, a conductor V−1b to a conductor V−14b, a conductor V+1b to a conductor V+14b, and a conductor V−1t to a conductor V−14t form a four row parallel winding wire structure of V phase which consists of a first V phase series circuit, a second V phase series circuit, a third V phase series circuit, and a fourth V phase series circuit;

a conductor W+1t to a conductor W+14t, a conductor W−1b to a conductor W−14b, a conductor W+1b to a conductor W+14b, and a conductor W−1t to a conductor W−14t form a four row parallel winding wire structure of W phase which consists of a first W phase series circuit, a second W phase series circuit, a third W phase series circuit, and a fourth W phase series circuit;

when X is used to denote any one of U, V, and W,

conductors are connected in an order of a conductor X+1t, a conductor X−1b, a conductor X+3t, a conductor X−4b, a conductor X+6t, a conductor X−6b, a conductor X+8t, a conductor X−8b, a conductor X+10t, a conductor X−10b, a conductor X+11t, a conductor X−11b, a conductor X+13t, and a conductor X−13b in the first U phase series circuit, the first V phase series circuit, and the first W phase series circuit;

conductors are connected in an order of a conductor X+2t, a conductor X−2b, a conductor X+4t, a conductor X−3b, a conductor X+5t, a conductor X−5b, a conductor X+7t, a conductor X−7b, a conductor X+9t, a conductor X−9b, and a conductor X+12t, a conductor X−12b, a conductor X+14t, and a conductor X−14b in the second U phase series circuit, the second V phase series circuit, and the second W phase series circuit;

the conductor X−9b and the conductor X+12t cross at a connection side coil end, and are connected using a jumper line;

the conductor X−10b and the conductor X+11t are connected at the connection side coil end, using a jumper line;

the conductor X+4t and the conductor X−3b cross at an anti-connection side coil end, and are connected using a jumper line; and

the conductor X+3t and the conductor X−4b are connected at the anti-connection side coil end, using a jumper line.

2. The rotary electric machine according to claim 1 , wherein

conductors are connected in an order of a conductor X+1b, a conductor X−1t, a conductor X+3b, a conductor X−4t, a conductor X+6b, a conductor X−6t, a conductor X+8b, a conductor X−8t, a conductor X+10b, a conductor X−10t, a conductor X+11b, a conductor X−11t, a conductor X+13b, and a conductor X−13t, in the third U phase series circuit, the third V phase series circuit, and the third W phase series circuit, and

conductors are connected in an order of a conductor X+2b, a conductor X−2t, a conductor X+4b, a conductor X−3t, a conductor X+5b, a conductor X−5t, a conductor X+7b, a conductor X−7t, a conductor X+9b, a conductor X−9t, a conductor X+12b, a conductor X−12t, a conductor X+14b, and a conductor X−14t, in the fourth U phase series circuit, the fourth V phase series circuit, and the fourth W phase series circuit.

3. The rotary electric machine according to claim 2 , wherein

the conductor X−9t and the conductor X+12b cross at the connection side coil end, and are connected using a jumper line;

the conductor X−10t and the conductor X+11b are connected at the connection side coil end, using a jumper line;

the conductor X+4b and the conductor X−3t cross at the anti-connection side coil end, and are connected using a jumper line; and

the conductor X+3b and the conductor X−4t are connected at the anti-connection side coil end, using a jumper line.