CN209881519U

CN209881519U - Three-phase flat wire motor stator winding

Info

Publication number: CN209881519U
Application number: CN201920508082.9U
Authority: CN
Inventors: 孙明冲; 张广会; 张占江; 李明会; 黄维
Original assignee: FAW Group Corp
Current assignee: FAW Group Corp
Priority date: 2019-04-16
Filing date: 2019-04-16
Publication date: 2019-12-31
Anticipated expiration: 2029-04-16

Abstract

The utility model belongs to the technical field of the new energy automobile, specific three-phase flat wire motor stator winding that says so. The stator comprises 8 poles and 48 rectangular stator slots which are arranged at equal intervals, the number of conductors in each rectangular stator slot is 8, a three-phase winding structure is provided in total, each phase of winding structure comprises two branches which are connected in series, each phase of winding structure comprises an inserting side and a welding side, a power supply outgoing line is arranged on the welding side, the pitch of the inserting side is 6, each phase of winding structure is a U-shaped line, the inner layer of the stator winding is connected with a series connection line, and the outer layer of the winding is connected with the power supply outgoing line and a star point connection line; the utility model discloses having simplified the winding structure, having improved winding insertion manufacturing process nature, having realized the automatic line unloading of machinery, having simplified the welding end winding structure, reduced the winding coil welding production degree of difficulty.

Description

Three-phase flat wire motor stator winding

Technical Field

The utility model belongs to the technical field of new energy automobile, specific three-dimensional flat wire motor stator winding that says so.

Background

With the rapid development of new energy automobile technology, the performance requirement on the driving motor for the automobile is higher and higher, and the increase of the performance inevitably leads to the increase of the volume of the driving motor, but the axial space size of the new energy automobile is very limited, so that the contradiction between the performance and the volume of the driving motor is increasingly prominent.

At present, a driving motor of a new energy automobile mainly takes a permanent magnet synchronous motor as a main component. In the technical field of permanent magnet synchronous motors, a motor stator can be divided into a round wire and a flat copper wire according to the cross section shape of a stator winding. Motors that use flat copper wire are called flat wire motors. Compared with a round wire, the flat copper wire can effectively improve the slot filling rate of the driving motor, thereby reducing the copper consumption of the driving motor and improving the efficiency of the driving motor, and simultaneously can reduce the height of the end part of the motor stator winding and effectively reduce the installation space of the motor.

However, in the three-phase flat-wire motor stator in the prior art, when the number of conductors in each slot is an even number of layers above four, 1 and 2 layers form a branch, 3 and 4 layers form a branch, and the rest is analogized in turn to form a plurality of branches, all the branches are connected in series, and a gap bridge wire appears at the insertion side of a stator winding between two adjacent branches, so that the difficulty of inserting wires is increased, and mechanical automatic wire inserting cannot be adopted. In the stator winding of the existing three-phase flat wire motor, star point connection and power supply outgoing lines are distributed at the insertion side of the stator winding, so that the number of special-shaped wires is increased, and the problems of concentrated distribution, complex structural wiring and poor mass production manufacturing process exist in the special-shaped wires.

Disclosure of Invention

The utility model aims at providing a flat wire motor stator winding, this kind of stator winding have further simplified the welding end winding structure, reduce the winding coil welding production degree of difficulty, have solved the not good problem of present flat wire motor stator winding volume production manufacturing process, realize mechanical automation and roll off the production line.

The technical scheme of the utility model is explained as follows with the attached drawings:

a three-phase flat wire motor stator winding comprises 8 poles and 48 rectangular stator slots which are arranged at equal intervals, the number of conductors in each rectangular stator slot is 8, a three-phase winding structure, namely a U-phase winding structure, a V-phase winding structure and a W-phase winding structure, each phase of winding structure comprises two branches which are connected in series, each phase of winding structure comprises an inserting side 1 and a welding side 9, the welding side 9 is provided with a power supply outgoing line, the pitches of the inserting sides 1 are equal and are 6, each phase of winding structure is a U-shaped wire, a series connection wire is welded on the inner layer of the three-phase flat wire motor stator winding, and a power supply outgoing line and a star point connection wire are welded on the outer layer of the three-phase flat wire motor stator winding;

the U-phase winding structure starts from a U-phase power lead wire 10, the U-phase power lead wire 10 is connected with a terminal U2 and a terminal U4, a winding wire in the U-phase winding structure enters from a terminal U2 and a terminal U4 of a first branch, exits from a terminal U1 and a terminal U3, a terminal U1 and a terminal X3 enter a second branch of the U-phase winding structure after being connected through a U-phase first series connection wire 7, then the winding wire is led out from the terminal X4 to a star point connection wire 2, a terminal U3 and a terminal X1 are connected through a U-phase second series connection wire 8, then the winding wire enters the second branch of the U-phase winding structure, and then the winding wire is led out from the terminal X2 to the star point connection wire 2;

the V-phase winding structure starts from a V-phase power supply lead wire 11, the V-phase power supply lead wire 11 is connected with a terminal V2 and a terminal V4, a winding wire in the V-phase winding structure enters from a terminal V2 and a terminal V4 of a first branch, exits from a terminal V1 and a terminal V3, a terminal V1 and a terminal Y3 enter a second branch of the V-phase winding structure after being connected through a V-phase first series connection wire 5, then the winding wire is led out from the terminal Y4 to a star point connection wire 2, a terminal V3 and a terminal Y1 are connected through a V-phase second series connection wire 6, then the winding wire enters the second branch of the V-phase winding structure, and then the winding wire is led out from the terminal Y2 to the star point connection wire 2;

the W-phase winding structure starts from a W-phase power lead wire 12, the W-phase power lead wire 12 is connected with a terminal W2 and a terminal W4, a winding wire in the W-phase winding structure enters from a terminal W2 and a terminal W4 of a first branch, exits from a terminal W1 and a terminal W3, a terminal W1 and a terminal Z3 are connected through a W-phase first series connection wire 3 and then enter a second branch of the W-phase winding structure, then an outgoing wire is led out from the terminal Z4 to a star point connection wire 2, a terminal W3 and a terminal Z1 are connected through a W-phase second series connection wire 4 and then enter the second branch of the W-phase winding structure, and then the outgoing wire is led out from the terminal Z2 to the star point connection wire 2;

the lead line of the terminal X2, the lead line of the terminal X4, the lead line of the terminal Y2, the lead line of the terminal Y4, the lead line of the terminal Z2 and the terminal Z4 are all connected to the star point connection line 2 to form a star point, the terminal U2 and the terminal U4 are connected to the U-phase power supply lead line 10, the terminal V2 and the terminal V4 are connected to the V-phase power supply lead line 11, and the terminal W2 and the terminal W4 are connected to the W-phase power supply lead line 12.

The winding mode of the first branch of the U-phase winding structure is as follows: the winding connected to the terminal U2 enters first from the 1 st layer of the 8 th rectangular stator slot, then enters the 2 nd layer of the 14 th rectangular stator slot at a pitch of 6, then enters the 1 st layer of the 20 th rectangular stator slot at a pitch of 6, then enters the 2 nd layer of the 26 th rectangular stator slot at a pitch of 6, then enters the 1 st layer of the 32 th rectangular stator slot at a pitch of 6, then enters the 2 nd layer of the 38 th rectangular stator slot at a pitch of 6, then enters the 1 st layer of the 44 th rectangular stator slot at a pitch of 6, and reaches the 2 nd layer of the 2 nd rectangular stator slot after being wound in series for one turn; then at a pitch of 6 into layer 3 of the 8 th rectangular stator slot, then at a pitch of 6 into layer 4 of the 14 th rectangular stator slot, then at a pitch of 6 into layer 3 of the 20 th rectangular stator slot, then at a pitch of 6 into layer 4 of the 26 th rectangular stator slot, then at a pitch of 6 into layer 3 of the 32 th rectangular stator slot, then at a pitch of 6 into layer 4 of the 38 th rectangular stator slot, then at a pitch of 6 into layer 3 of the 44 th rectangular stator slot, and after just one turn in series to layer 4 of the 2 nd rectangular stator slot, then at a pitch of 6 into layer 5 of the 8 th rectangular stator slot, then at a pitch of 6 into layer 6 of the 14 th rectangular stator slot, then at a pitch of 6 into layer 5 of the 20 th rectangular stator slot, then at a pitch of 6 into layer 6 of the 26 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 32 th rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 38 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 44 th rectangular stator slot, after being wound in series for one turn to the 6 th layer of the 2 nd rectangular stator slot, then at a pitch of 6 into the 7 th layer of the 8 th rectangular stator slot, at a pitch of 6 into the 8 th layer of the 14 th rectangular stator slot, then at a pitch of 6 into the 7 th layer of the 20 th rectangular stator slot, then at a pitch of 6 into the 8 th layer of the 26 th rectangular stator slot, then at a pitch of 6 into the 7 th layer of the 32 th rectangular stator slot, then at a pitch of 6 into the 8 th layer of the 38 th rectangular stator slot, then at a pitch of 6 into the 7 th layer of the 44 th rectangular stator slot, after being wound in series to the 8 th layer terminal U1 of the 2 nd rectangular stator slot, the terminal U1 is connected to the terminal X3 through the U-phase first series connection wire 7;

the wire connected to terminal U4 entered from layer 1 of the 9 th rectangular stator slot, then entered at a pitch of 6 into layer 2 of the 15 th rectangular stator slot, then entered at a pitch of 6 into layer 1 of the 21 st rectangular stator slot, then entered at a pitch of 6 into layer 2 of the 27 th rectangular stator slot, then entered at a pitch of 6 into layer 1 of the 33 th rectangular stator slot, then entered at a pitch of 6 into layer 2 of the 39 th rectangular stator slot, then entered at a pitch of 6 into layer 1 of the 45 th rectangular stator slot, followed by being wound in series for one turn to layer 2 of the 3 rd rectangular stator slot, then entered at a pitch of 6 into layer 3 of the 9 th rectangular stator slot, then entered at a pitch of 6 into layer 4 of the 15 th rectangular stator slot, then entered at a pitch of 6 into layer 3 of the 21 st rectangular stator slot, then entered at a pitch of 6 into layer 4 of the 27 th rectangular stator slot, then at a pitch of 6 into the 3 rd layer of the 33 th rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 39 th rectangular stator slot, then at a pitch of 6 into the 3 rd layer of the 45 th rectangular stator slot, after being wound in series for one turn to the 4 th layer of the 3 rd rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 9 th rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 15 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 21 st rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 27 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 33 th rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 39 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 45 th rectangular stator slot, after being wound in series to the 6 th layer of the 3 rd rectangular stator slot, then at a pitch of 6 into the 7 th layer of the 9 th rectangular stator slot, then at a pitch of 6 into the 8 th layer of the 15 th rectangular stator slot, then at a pitch of 6 into the 7 th layer of the 21 st rectangular stator slot, then at a pitch of 6 into the 8 th layer of the 27 th rectangular stator slot, then at a pitch of 6 into the 7 th layer of the 33 th rectangular stator slot, then at a pitch of 6 into the 8 th layer of the 39 th rectangular stator slot, then at a pitch of 6 into the 7 th layer of the 45 th rectangular stator slot, and after being wound in series for one turn to reach the 8 th layer terminal U3 of the 3 rd rectangular stator slot, the terminal U3 is connected to the terminal X1 through a U-phase second series connection wire 8;

the winding mode of the second branch of the U-phase winding structure is as follows: the winding wire connected to the terminal X1 entered first from the 8 th layer of the 8 th rectangular stator slot, then entered the 7 th layer of the 2 nd rectangular stator slot at a pitch of 6, then entered the 8 th layer of the 44 th rectangular stator slot at a pitch of 6, then entered the 7 th layer of the 38 th rectangular stator slot at a pitch of 6, then entered the 8 th layer of the 32 th rectangular stator slot at a pitch of 6, then entered the 7 th layer of the 26 th rectangular stator slot at a pitch of 6, then entered the 8 th layer of the 20 th rectangular stator slot at a pitch of 6, arrived at the 7 th layer of the 14 th rectangular stator slot after being wound in series for one turn, then entered the 6 th layer of the 8 th rectangular stator slot at a pitch of 6, then entered the 5 th layer of the 2 nd rectangular stator slot at a pitch of 6, then entered the 6 th layer of the 44 th rectangular stator slot at a pitch of 6, then entered the 5 th layer of the 38 th rectangular stator slot at a pitch of 6, then at a pitch of 6 into the 6 th layer of the 32 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 26 th rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 20 th rectangular stator slot, after being wound in series for one turn to the 5 th layer of the 14 th rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 8 th rectangular stator slot, then at a pitch of 6 into the 3 rd layer of the 2 nd rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 44 th rectangular stator slot, then at a pitch of 6 into the 3 rd layer of the 38 th rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 32 th rectangular stator slot, then at a pitch of 6 into the 3 rd layer of the 26 th rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 20 th rectangular stator slot, after being wound in series to the 3 rd layer of the 14 th rectangular stator slot, then enter the 2 nd layer of the 8 th rectangular stator slot with a pitch of 6, then enter the 1 st layer of the 2 nd rectangular stator slot with a pitch of 6, then enter the 2 nd layer of the 44 th rectangular stator slot with a pitch of 6, then enter the 1 st layer of the 38 th rectangular stator slot with a pitch of 6, then enter the 2 nd layer of the 32 nd rectangular stator slot with a pitch of 6, then enter the 1 st layer of the 26 th rectangular stator slot with a pitch of 6, then enter the 2 nd layer of the 20 th rectangular stator slot with a pitch of 6, reach the 1 st layer terminal X2 of the 14 th rectangular stator slot after being wound in series for one turn, and finally connect to the star point connection wire 2 from the terminal X2;

the wire connected to the terminal X3 entered from the 8 th layer of the 9 th rectangular stator slot, then entered at a pitch of 6 into the 7 th layer of the 3 rd rectangular stator slot, then entered at a pitch of 6 into the 8 th layer of the 45 th rectangular stator slot, then entered at a pitch of 6 into the 7 th layer of the 39 th rectangular stator slot, then entered at a pitch of 6 into the 8 th layer of the 33 th rectangular stator slot, then entered at a pitch of 6 into the 7 th layer of the 27 th rectangular stator slot, then entered at a pitch of 6 into the 8 th layer of the 21 st rectangular stator slot, followed by being wound in series for one turn to the 7 th layer of the 15 th rectangular stator slot, then entered at a pitch of 6 into the 6 th layer of the 9 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 3 rd rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 45 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 39 th rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 33 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 27 th rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 21 st rectangular stator slot, after being wound in series for one turn to the 5 th layer of the 15 th rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 9 th rectangular stator slot, then at a pitch of 6 into the 3 rd layer of the 3 rd rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 45 th rectangular stator slot, then at a pitch of 6 into the 3 rd layer of the 39 th rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 33 th rectangular stator slot, then at a pitch of 6 into the 3 rd layer of the 27 th rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 21 st rectangular stator slot, after being wound in series to the 3 rd layer of the 15 th rectangular stator slot, then enter the 2 nd layer of the 9 th rectangular stator slot with a pitch of 6, then enter the 1 st layer of the 3 rd rectangular stator slot with a pitch of 6, then enter the 2 nd layer of the 45 th rectangular stator slot with a pitch of 6, then enter the 1 st layer of the 39 th rectangular stator slot with a pitch of 6, then enter the 2 nd layer of the 33 th rectangular stator slot with a pitch of 6, then enter the 1 st layer of the 27 th rectangular stator slot with a pitch of 6, then enter the 2 nd layer of the 21 st rectangular stator slot with a pitch of 6, reach the 1 st layer X4 of the 15 th rectangular stator slot after being wound in series for one turn, and finally exit from the terminal X4 and connect to the star point connection wire 2;

the winding mode of the first branch of the V-phase winding structure is as follows: the winding wire connected to the terminal V2 entered first from the 1 st layer of the 10 th rectangular stator slot, then entered the 2 nd layer of the 16 th rectangular stator slot at a pitch of 6, then entered the 1 st layer of the 22 nd rectangular stator slot at a pitch of 6, then entered the 2 nd layer of the 28 th rectangular stator slot at a pitch of 6, then entered the 1 st layer of the 34 th rectangular stator slot at a pitch of 6, then entered the 2 nd layer of the 40 th rectangular stator slot at a pitch of 6, then entered the 1 st layer of the 46 th rectangular stator slot at a pitch of 6, arrived at the 2 nd layer of the 4 th rectangular stator slot after being wound in series for one turn, then entered the 3 rd layer of the 10 th rectangular stator slot at a pitch of 6, then entered the 4 th layer of the 16 th rectangular stator slot at a pitch of 6, then entered the 3 rd layer of the 22 th rectangular stator slot at a pitch of 6, then entered the 4 th layer of the 28 th rectangular stator slot at a pitch of 6, then at a pitch of 6 into the 3 rd layer of the 34 th rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 40 th rectangular stator slot, then at a pitch of 6 into the 3 rd layer of the 46 th rectangular stator slot, after being wound in series for one turn to the 4 th layer of the 4 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 10 th rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 16 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 22 th rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 28 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 34 th rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 40 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 46 th rectangular stator slot, after being wound in series to the 6 th layer of the 4 th rectangular stator slot, then at a pitch of the 7 th layer into the 10 th rectangular stator slot, then at a pitch of the 8 th layer into the 16 th rectangular stator slot, then at a pitch of the 6 th layer into the 22 th rectangular stator slot, then at a pitch of the 6 th layer into the 28 th rectangular stator slot, then at a pitch of the 6 th layer into the 34 th rectangular stator slot, then at a pitch of the 6 th layer into the 40 th rectangular stator slot, then at a pitch of the 6 th layer into the 46 th rectangular stator slot, and after being wound in series for one turn, reaching the 8 th layer terminal V1 of the 4 th rectangular stator slot, the terminal V1 is connected to the terminal Y3 through the V-phase first series connection wire 5;

the wire connected to the terminal V4 entered from the 1 st layer of the 11 th rectangular stator slot, then entered the 2 nd layer of the 17 th rectangular stator slot at a pitch of 6, then entered the 1 st layer of the 23 rd rectangular stator slot at a pitch of 6, then entered the 2 nd layer of the 29 th rectangular stator slot at a pitch of 6, then entered the 1 st layer of the 35 th rectangular stator slot at a pitch of 6, then entered the 2 nd layer of the 41 th rectangular stator slot at a pitch of 6, then entered the 1 st layer of the 47 th rectangular stator slot at a pitch of 6, arrived at the 2 nd layer of the 5 th rectangular stator slot after being wound in series for one turn, then entered the 3 rd layer of the 11 th rectangular stator slot at a pitch of 6, then entered the 4 th layer of the 17 th rectangular stator slot at a pitch of 6, then entered the 3 rd layer of the 23 th rectangular stator slot at a pitch of 6, then entered the 4 th layer of the 29 th rectangular stator slot at a pitch of 6, then at a pitch of 6 into the 3 rd layer of the 35 th rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 41 th rectangular stator slot, then at a pitch of 6 into the 3 rd layer of the 47 th rectangular stator slot, after being wound in series for one turn to the 4 th layer of the 5 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 11 th rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 17 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 23 rd rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 29 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 35 th rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 41 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 47 th rectangular stator slot, after being wound in series to the 6 th layer of the 5 th rectangular stator slot, then at a pitch of 6 into the 7 th layer of the 11 th rectangular stator slot, then at a pitch of 6 into the 8 th layer of the 17 th rectangular stator slot, then at a pitch of 6 into the 7 th layer of the 23 th rectangular stator slot, then at a pitch of 6 into the 8 th layer of the 29 th rectangular stator slot, then at a pitch of 6 into the 7 th layer of the 35 th rectangular stator slot, then at a pitch of 6 into the 8 th layer of the 41 th rectangular stator slot, then at a pitch of 6 into the 7 th layer of the 47 th rectangular stator slot, and after being wound in series for one turn to the 8 th layer terminal V3 of the 5 th rectangular stator slot, the terminal V3 is connected to the terminal Y1 through a V-phase second series connection wire 6;

the winding mode of the second branch of the V-phase winding structure is as follows: the winding wire connected to the terminal Y1 entered first from the 8 th layer of the 10 th rectangular stator slot, then entered the 7 th layer of the 4 th rectangular stator slot at a pitch of 6, then entered the 8 th layer of the 46 th rectangular stator slot at a pitch of 6, then entered the 7 th layer of the 40 th rectangular stator slot at a pitch of 6, then entered the 8 th layer of the 34 th rectangular stator slot at a pitch of 6, then entered the 7 th layer of the 28 th rectangular stator slot at a pitch of 6, then entered the 8 th layer of the 22 th rectangular stator slot at a pitch of 6, arrived at the 7 th layer of the 16 th rectangular stator slot after being wound in series for one turn, then entered the 6 th layer of the 10 th rectangular stator slot at a pitch of 6, then entered the 5 th layer of the 4 th rectangular stator slot at a pitch of 6, then entered the 6 th layer of the 46 th rectangular stator slot at a pitch of 6, then entered the 5 th layer of the 40 th rectangular stator slot at a pitch of 6, then at a pitch of 6 into the 6 th layer of the 34 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 28 th rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 22 th rectangular stator slot, after being wound in series for one turn to the 5 th layer of the 16 th rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 10 th rectangular stator slot, then at a pitch of 6 into the 3 rd layer of the 4 th rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 46 th rectangular stator slot, then at a pitch of 6 into the 3 rd layer of the 40 th rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 34 th rectangular stator slot, then at a pitch of 6 into the 3 rd layer of the 28 th rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 22 th rectangular stator slot, after being wound in series to the 3 rd layer of the 16 th rectangular stator slot, then enter the 10 th layer 2 of rectangular stator slots with a pitch of 6, then enter the 4 th layer 1 of rectangular stator slots with a pitch of 6, then enter the 46 th layer 2 of rectangular stator slots with a pitch of 6, then enter the 40 th layer 1 of rectangular stator slots with a pitch of 6, then enter the 34 th layer 2 of rectangular stator slots with a pitch of 6, then enter the 28 th layer 1 of rectangular stator slots with a pitch of 6, then enter the 22 nd layer 2 of rectangular stator slots with a pitch of 6, go in series for one turn to reach the 16 th layer terminal Y2 of the 16 th rectangular stator slot, finally exit from the terminal Y2 and connect to the star point connection line 2;

the winding wire connected to the terminal Y3 entered from the 8 th layer of the 11 th rectangular stator slot, then entered at a pitch of 6 into the 7 th layer of the 5 th rectangular stator slot, then entered at a pitch of 6 into the 8 th layer of the 47 th rectangular stator slot, then entered at a pitch of 6 into the 7 th layer of the 41 th rectangular stator slot, then entered at a pitch of 6 into the 8 th layer of the 35 th rectangular stator slot, then entered at a pitch of 6 into the 7 th layer of the 29 th rectangular stator slot, then entered at a pitch of 6 into the 8 th layer of the 23 rd rectangular stator slot, followed by being wound in series for one turn to the 7 th layer of the 17 th rectangular stator slot, then entered at a pitch of 6 into the 6 th layer of the 11 th rectangular stator slot, then entered at a pitch of 6 into the 5 th layer of the 5 th rectangular stator slot, then entered at a pitch of 6 into the 6 th layer of the 47 th rectangular stator slot, then entered at a pitch of 6 into the 5 th layer of the 41 th rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 35 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 29 th rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 23 th rectangular stator slot, after being wound in series for one turn to the 5 th layer of the 17 th rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 11 th rectangular stator slot, then at a pitch of 6 into the 3 rd layer of the 5 th rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 47 th rectangular stator slot, then at a pitch of 6 into the 3 rd layer of the 41 th rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 35 th rectangular stator slot, then at a pitch of 6 into the 3 rd layer of the 29 th rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 23 th rectangular stator slot, after being wound in series to the 3 rd layer of the 17 th rectangular stator slot, then enter the 11 th layer 2 of rectangular stator slots with a pitch of 6, then enter the 5 th layer 1 of rectangular stator slots with a pitch of 6, then enter the 47 th layer 2 of rectangular stator slots with a pitch of 6, then enter the 41 st layer 1 of rectangular stator slots with a pitch of 6, then enter the 35 th layer 2 of rectangular stator slots with a pitch of 6, then enter the 29 th layer 1 of rectangular stator slots with a pitch of 6, then enter the 23 rd layer 2 of rectangular stator slots with a pitch of 6, go in series for one turn to reach the 17 th layer 1 terminal Y4 of rectangular stator slots, finally exit from the terminal Y4 and connect to the star point connection line 2;

the winding mode of the first branch of the W-phase winding structure is as follows: the winding wire connected to the terminal W2 entered first from the 1 st layer of the 12 th rectangular stator slot, then entered the 2 nd layer of the 18 th rectangular stator slot at a pitch of 6, then entered the 1 st layer of the 24 th rectangular stator slot at a pitch of 6, then entered the 2 nd layer of the 30 th rectangular stator slot at a pitch of 6, then entered the 1 st layer of the 36 th rectangular stator slot at a pitch of 6, then entered the 2 nd layer of the 42 th rectangular stator slot at a pitch of 6, then entered the 1 st layer of the 48 th rectangular stator slot at a pitch of 6, arrived at the 2 nd layer of the 6 th rectangular stator slot after being wound in series for one turn, then entered the 3 rd layer of the 12 th rectangular stator slot at a pitch of 6, then entered the 4 th layer of the 18 th rectangular stator slot at a pitch of 6, then entered the 3 rd layer of the 24 th rectangular stator slot at a pitch of 6, then entered the 4 th layer of the 30 th rectangular stator slot at a pitch of 6, then at a pitch of 6 into the 3 rd layer of the 36 th rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 42 th rectangular stator slot, then at a pitch of 6 into the 3 rd layer of the 48 th rectangular stator slot, after being wound in series for one turn to the 4 th layer of the 6 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 12 th rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 18 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 24 th rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 30 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 36 th rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 42 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 48 th rectangular stator slot, after being wound in series to the 6 th layer of the 6 th rectangular stator slot, then at a pitch of 6 into the 7 th layer of the 12 th rectangular stator slot, then at a pitch of 6 into the 8 th layer of the 18 th rectangular stator slot, then at a pitch of 6 into the 7 th layer of the 24 th rectangular stator slot, then at a pitch of 6 into the 8 th layer of the 30 th rectangular stator slot, then at a pitch of 6 into the 7 th layer of the 36 th rectangular stator slot, then at a pitch of 6 into the 8 th layer of the 42 th rectangular stator slot, then at a pitch of 6 into the 7 th layer of the 48 th rectangular stator slot, and after being wound in series for one turn, to the 8 th layer terminal W1 of the 6 th rectangular stator slot, the terminal W1 is connected 3 to the terminal Z3 by W-phase first series connection wiring;

the wire connected to the terminal W4 entered from the 1 st layer of the 13 th rectangular stator slot, then entered the 2 nd layer of the 19 th rectangular stator slot at a pitch of 6, then entered the 1 st layer of the 25 th rectangular stator slot at a pitch of 6, then entered the 2 nd layer of the 31 st rectangular stator slot at a pitch of 6, then entered the 1 st layer of the 37 th rectangular stator slot at a pitch of 6, then entered the 2 nd layer of the 43 th rectangular stator slot at a pitch of 6, then entered the 1 st layer of the 1 st rectangular stator slot at a pitch of 6, arrived at the 2 nd layer of the 7 th rectangular stator slot after being wound in series for one turn, then entered the 3 rd layer of the 13 th rectangular stator slot at a pitch of 6, then entered the 4 th layer of the 19 th rectangular stator slot at a pitch of 6, then entered the 3 rd layer of the 25 th rectangular stator slot at a pitch of 6, then entered the 4 th layer of the 31 th rectangular stator slot at a pitch of 6, then at a pitch of 6 into the 3 rd layer of the 37 th rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 43 th rectangular stator slot, then at a pitch of 6 into the 3 rd layer of the 1 st rectangular stator slot, after being wound in series for one turn to the 4 th layer of the 7 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 13 th rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 19 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 25 th rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 31 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 37 th rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 43 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 1 st rectangular stator slot, after being wound in series to the 6 th layer of the 7 th rectangular stator slot, then at a pitch of 6 into the 7 th layer of the 13 th rectangular stator slot, then at a pitch of 6 into the 8 th layer of the 19 th rectangular stator slot, then at a pitch of 6 into the 7 th layer of the 25 th rectangular stator slot, then at a pitch of 6 into the 8 th layer of the 31 th rectangular stator slot, then at a pitch of 6 into the 7 th layer of the 37 th rectangular stator slot, then at a pitch of 6 into the 8 th layer of the 43 th rectangular stator slot, then at a pitch of 6 into the 7 th layer of the 1 st rectangular stator slot, and after being wound in series for one turn, to the 8 th layer terminal W3 of the 7 th rectangular stator slot, the terminal W3 is connected to the terminal Z3 through the W-phase second series connecting wire 4;

the winding mode of the second branch of the W-phase winding structure is as follows: the winding wire connected to the terminal Z1 entered first from the 8 th layer of the 12 th rectangular stator slot, then entered the 7 th layer of the 6 th rectangular stator slot at a pitch of 6, then entered the 8 th layer of the 48 th rectangular stator slot at a pitch of 6, then entered the 7 th layer of the 42 th rectangular stator slot at a pitch of 6, then entered the 8 th layer of the 36 th rectangular stator slot at a pitch of 6, then entered the 7 th layer of the 30 th rectangular stator slot at a pitch of 6, then entered the 8 th layer of the 24 th rectangular stator slot at a pitch of 6, arrived at the 7 th layer of the 18 th rectangular stator slot after being wound in series for one turn, then entered the 6 th layer of the 12 th rectangular stator slot at a pitch of 6, then entered the 5 th layer of the 6 th rectangular stator slot at a pitch of 6, then entered the 6 th layer of the 48 th rectangular stator slot at a pitch of 6, then entered the 5 th layer of the 42 th rectangular stator slot at a pitch of 6, then at a pitch of 6 into the 6 th layer of the 36 th rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 30 th rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 24 th rectangular stator slot, after being wound in series for one turn to the 5 th layer of the 18 th rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 12 th rectangular stator slot, then at a pitch of 6 into the 3 rd layer of the 6 th rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 48 th rectangular stator slot, then at a pitch of 6 into the 3 rd layer of the 42 th rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 36 th rectangular stator slot, then at a pitch of 6 into the 3 rd layer of the 30 th rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 24 th rectangular stator slot, after being wound in series to the 3 rd layer of the 18 th rectangular stator slot, then enter the 2 nd layer of the 12 th rectangular stator slot with a pitch of 6, then enter the 1 st layer of the 6 th rectangular stator slot with a pitch of 6, then enter the 2 nd layer of the 48 th rectangular stator slot with a pitch of 6, then enter the 1 st layer of the 42 th rectangular stator slot with a pitch of 6, then enter the 2 nd layer of the 36 th rectangular stator slot with a pitch of 6, then enter the 1 st layer of the 30 th rectangular stator slot with a pitch of 6, then enter the 2 nd layer of the 24 th rectangular stator slot with a pitch of 6, reach the 1 st layer terminal Z2 of the 18 th rectangular stator slot after being wound in series for one turn, finally exit from the terminal Z2 and connect to the star point connection line 2;

the wire connected to the terminal Z3 entered from the 8 th layer of the 13 th rectangular stator slot, then entered at a pitch of 6 into the 7 th layer of the 7 th rectangular stator slot, then entered at a pitch of 6 into the 8 th layer of the 1 st rectangular stator slot, then entered at a pitch of 6 into the 7 th layer of the 43 th rectangular stator slot, then entered at a pitch of 6 into the 8 th layer of the 37 th rectangular stator slot, then entered at a pitch of 6 into the 7 th layer of the 31 st rectangular stator slot, then entered at a pitch of 6 into the 8 th layer of the 25 th rectangular stator slot, followed by one turn in series by reaching the 7 th layer of the 19 th rectangular stator slot, then entered at a pitch of 6 into the 6 th layer of the 13 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 7 th rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 1 st rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 43 th rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 37 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 31 th rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 25 th rectangular stator slot, after being wound in series for one turn to the 5 th layer of the 19 th rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 13 th rectangular stator slot, then at a pitch of 6 into the 3 rd layer of the 7 th rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 1 st rectangular stator slot, then at a pitch of 6 into the 3 rd layer of the 43 rd rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 37 th rectangular stator slot, then at a pitch of 6 into the 3 rd layer of the 31 th rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 25 th rectangular stator slot, after being wound in series to the 3 rd layer of the 19 th rectangular stator slot, then at a pitch of 6 into the 2 nd layer of the 13 th rectangular stator slot, then at a pitch of 6 into the 1 st layer of the 7 th rectangular stator slot, then at a pitch of 6 into the 2 nd layer of the 1 st rectangular stator slot, then at a pitch of 6 into the 1 st layer of the 43 th rectangular stator slot, then at a pitch of 6 into the 2 nd layer of the 37 th rectangular stator slot, then at a pitch of 6 into the 1 st layer of the 31 th rectangular stator slot, then at a pitch of 6 into the 2 nd layer of the 25 th rectangular stator slot, and finally after being wound in series for one turn, the 1 st layer terminal Z4 reaching the 19 th rectangular stator slot is led out from the terminal Z4 and connected to the star point connection line 2.

The utility model has the advantages that:

(1) a bridge crossing wire is cancelled, and mechanical automatic off-line is realized;

(2) the welding side is provided with a star point connection, a series connection line and a power supply outgoing line, so that the number of special-shaped lines is reduced, and the feasibility of the winding mass production manufacturing process is improved;

(3) star point connection, bridging lines and power supply outgoing lines on the insertion side are eliminated, the winding structure is simplified, and the height of the winding end is further reduced;

(4) the structure of the welding end winding is further simplified, and the welding production difficulty of the winding coil is reduced.

Drawings

Fig. 1 is an expanded schematic diagram of a three-phase winding principle of a stator winding of a three-phase flat-wire motor according to the present invention;

fig. 2 is a schematic diagram of the three-phase winding principle connection of the stator winding of the three-phase flat-wire motor of the present invention;

fig. 3 is a schematic diagram of the conductor distribution in each rectangular stator slot of a three-phase flat wire motor stator winding of the present invention;

fig. 4 is a schematic structural view of a welding-side power supply outgoing line and a star point connecting line of a three-phase flat wire motor stator winding of the present invention;

fig. 5 is a schematic view of the overall structure of a stator winding of a three-phase flat-wire motor according to the present invention;

fig. 6 is a schematic structural view of a U-phase series connection line of a stator winding of a three-phase flat-wire motor of the present invention;

fig. 7 is a schematic structural diagram of a three-phase outgoing line of a three-phase flat-wire motor stator winding according to the present invention;

fig. 8 is a schematic structural view of a star point connecting wire of a stator winding of a three-phase flat wire motor according to the present invention;

fig. 9 is a schematic diagram of the structure of the insertion side winding of the stator winding of the three-phase flat-wire motor of the present invention;

in the figure: 1. an insertion side; 2. a star point connecting line; 3. a W-phase first series connection line; 4. a W-phase second series connection line; 5. a V-phase first series connection line; 6. a V-phase second series connection line; 7. a U-phase first series connection line; 8. a U-phase second series connection line; 9. welding the side; 10. a U-phase power supply lead-out wire; 11. a V-phase power supply lead-out wire; 12. and a W-phase power supply lead wire.

Detailed Description

Referring to fig. 1-9, the invention provides a three-phase flat wire motor stator winding, the motor stator comprises 8 poles and 48 rectangular stator slots which are arranged at equal intervals, the number of conductors in each rectangular stator slot is 8, a three-phase winding structure is provided in total, namely a U-phase winding structure, a V-phase winding structure and a W-phase winding structure, each phase winding structure comprises two branches which are connected in series, each phase winding structure comprises an inserting side 1 and a welding side 9, the welding side 9 is provided with power leading-out wires, the pitches of the inserting sides 1 are equal and are 6, each phase winding structure is a U-shaped wire, the inner layer of the three-phase flat wire motor stator winding is connected with a series connection wire, and the power leading-out wires and a star point connection wire are led out from the outer layer of the three-phase flat wire motor stator winding;

Claims

1. A three-phase flat wire motor stator winding is characterized in that a motor stator comprises 48 rectangular stator slots which are provided with 8 poles at equal intervals, the number of conductors in each rectangular stator slot is 8, a three-phase winding structure, namely a U-phase winding structure, a V-phase winding structure and a W-phase winding structure, each phase of winding structure comprises two branches which are connected in series, each phase of winding structure comprises an inserting side (1) and a welding side (9), the welding side (9) is provided with a power supply outgoing line, the pitches of the inserting sides (1) are equal and are 6, each phase of winding structure is a U-shaped line, a series connection wire is welded on the inner layer of the three-phase flat wire motor stator winding, and the power supply outgoing line and a star point connection wire are welded on the outer layer of the three-phase flat wire motor stator winding;

the U-phase winding structure starts from a U-phase power lead (10), the U-phase power lead (10) is connected with a terminal U2 and a terminal U4, a winding in the U-phase winding structure enters from a terminal U2 and a terminal U4 of a first branch, exits from a terminal U1 and a terminal U3, a terminal U1 and a terminal X3 enter a second branch of the U-phase winding structure after being connected through a U-phase first series connection wire (7), then the winding is led out from the terminal X4 to a star point connection wire (2), a terminal U3 and a terminal X1 are connected through a U-phase second series connection wire (8), then the winding enters the second branch of the U-phase winding structure, and then the winding is led out from the terminal X2 to the star point connection wire (2);

the V-phase winding structure starts from a V-phase power lead wire (11), the V-phase power lead wire (11) is connected with a terminal V2 and a terminal V4, a winding wire in the V-phase winding structure enters from a terminal V2 and a terminal V4 of a first branch, exits from a terminal V1 and a terminal V3, a terminal V1 and a terminal Y3 enter a second branch of the V-phase winding structure after being connected through a V-phase first series connection wire (5), then the winding wire is led out from the terminal Y4 to a star point connection wire (2), a terminal V3 and a terminal Y1 are connected through a V-phase second series connection wire (6), enter the second branch of the V-phase winding structure, and then the winding wire is led out from a terminal Y2 to the star point connection wire (2);

the W-phase winding structure starts from a W-phase power lead wire (12), the W-phase power lead wire (12) is connected with a terminal W2 and a terminal W4, a winding wire in the W-phase winding structure enters from a terminal W2 and a terminal W4 of a first branch, exits from a terminal W1 and a terminal W3, a terminal W1 and a terminal Z3 enter a second branch of the W-phase winding structure after being connected through a W-phase first series connection wire (3), then the winding wire is led out from the terminal Z4 to a star point connection wire (2), a terminal W3 and a terminal Z1 are connected through a W-phase second series connection wire (4), enter the second branch of the W-phase winding structure, and then the winding wire is led out from a terminal Z2 to the star point connection wire (2);

the lead wire of the terminal X2, the lead wire of the terminal X4, the lead wire of the terminal Y2, the lead wire of the terminal Y4, the lead wire of the terminal Z2 and the terminal Z4 are all connected to a star point connecting wire (2) to form a star point, the terminal U2 and the terminal U4 are connected to a U-phase power supply lead wire (10), the terminal V2 and the terminal V4 are connected to a V-phase power supply lead wire (11), and the terminal W2 and the terminal W4 are connected to a W-phase power supply lead wire (12).

2. The stator winding of the three-phase flat wire motor according to claim 1, wherein the winding manner of the first branch of the U-phase winding structure is as follows: the winding connected to the terminal U2 enters first from the 1 st layer of the 8 th rectangular stator slot, then enters the 2 nd layer of the 14 th rectangular stator slot at a pitch of 6, then enters the 1 st layer of the 20 th rectangular stator slot at a pitch of 6, then enters the 2 nd layer of the 26 th rectangular stator slot at a pitch of 6, then enters the 1 st layer of the 32 th rectangular stator slot at a pitch of 6, then enters the 2 nd layer of the 38 th rectangular stator slot at a pitch of 6, then enters the 1 st layer of the 44 th rectangular stator slot at a pitch of 6, and reaches the 2 nd layer of the 2 nd rectangular stator slot after being wound in series for one turn; then at a pitch of 6 into layer 3 of the 8 th rectangular stator slot, then at a pitch of 6 into layer 4 of the 14 th rectangular stator slot, then at a pitch of 6 into layer 3 of the 20 th rectangular stator slot, then at a pitch of 6 into layer 4 of the 26 th rectangular stator slot, then at a pitch of 6 into layer 3 of the 32 th rectangular stator slot, then at a pitch of 6 into layer 4 of the 38 th rectangular stator slot, then at a pitch of 6 into layer 3 of the 44 th rectangular stator slot, and after just one turn in series to layer 4 of the 2 nd rectangular stator slot, then at a pitch of 6 into layer 5 of the 8 th rectangular stator slot, then at a pitch of 6 into layer 6 of the 14 th rectangular stator slot, then at a pitch of 6 into layer 5 of the 20 th rectangular stator slot, then at a pitch of 6 into layer 6 of the 26 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 32 th rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 38 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 44 th rectangular stator slot, after being wound in series for one turn to the 6 th layer of the 2 nd rectangular stator slot, then at a pitch of 6 into the 7 th layer of the 8 th rectangular stator slot, at a pitch of 6 into the 8 th layer of the 14 th rectangular stator slot, then at a pitch of 6 into the 7 th layer of the 20 th rectangular stator slot, then at a pitch of 6 into the 8 th layer of the 26 th rectangular stator slot, then at a pitch of 6 into the 7 th layer of the 32 th rectangular stator slot, then at a pitch of 6 into the 8 th layer of the 38 th rectangular stator slot, then at a pitch of 6 into the 7 th layer of the 44 th rectangular stator slot, after being wound in series to the 8 th layer terminal U1 of the 2 nd rectangular stator slot, the terminal U1 is connected to the terminal X3 by a U-phase first series connection wire (7);

the wire connected to terminal U4 entered from layer 1 of the 9 th rectangular stator slot, then entered at a pitch of 6 into layer 2 of the 15 th rectangular stator slot, then entered at a pitch of 6 into layer 1 of the 21 st rectangular stator slot, then entered at a pitch of 6 into layer 2 of the 27 th rectangular stator slot, then entered at a pitch of 6 into layer 1 of the 33 th rectangular stator slot, then entered at a pitch of 6 into layer 2 of the 39 th rectangular stator slot, then entered at a pitch of 6 into layer 1 of the 45 th rectangular stator slot, followed by being wound in series for one turn to layer 2 of the 3 rd rectangular stator slot, then entered at a pitch of 6 into layer 3 of the 9 th rectangular stator slot, then entered at a pitch of 6 into layer 4 of the 15 th rectangular stator slot, then entered at a pitch of 6 into layer 3 of the 21 st rectangular stator slot, then entered at a pitch of 6 into layer 4 of the 27 th rectangular stator slot, then at a pitch of 6 into the 3 rd layer of the 33 th rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 39 th rectangular stator slot, then at a pitch of 6 into the 3 rd layer of the 45 th rectangular stator slot, after being wound in series for one turn to the 4 th layer of the 3 rd rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 9 th rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 15 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 21 st rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 27 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 33 th rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 39 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 45 th rectangular stator slot, after being wound in series to the 6 th layer of the 3 rd rectangular stator slot, then at a pitch of 6 into the 7 th layer of the 9 th rectangular stator slot, then at a pitch of 6 into the 8 th layer of the 15 th rectangular stator slot, then at a pitch of 6 into the 7 th layer of the 21 st rectangular stator slot, then at a pitch of 6 into the 8 th layer of the 27 th rectangular stator slot, then at a pitch of 6 into the 7 th layer of the 33 th rectangular stator slot, then at a pitch of 6 into the 8 th layer of the 39 th rectangular stator slot, then at a pitch of 6 into the 7 th layer of the 45 th rectangular stator slot, and after being wound in series for one turn to reach the 8 th layer terminal U3 of the 3 rd rectangular stator slot, the terminal U3 is connected to the terminal X1 by a U-phase second series connection wire (8);

the winding mode of the second branch of the U-phase winding structure is as follows: the winding wire connected to the terminal X1 entered first from the 8 th layer of the 8 th rectangular stator slot, then entered the 7 th layer of the 2 nd rectangular stator slot at a pitch of 6, then entered the 8 th layer of the 44 th rectangular stator slot at a pitch of 6, then entered the 7 th layer of the 38 th rectangular stator slot at a pitch of 6, then entered the 8 th layer of the 32 th rectangular stator slot at a pitch of 6, then entered the 7 th layer of the 26 th rectangular stator slot at a pitch of 6, then entered the 8 th layer of the 20 th rectangular stator slot at a pitch of 6, arrived at the 7 th layer of the 14 th rectangular stator slot after being wound in series for one turn, then entered the 6 th layer of the 8 th rectangular stator slot at a pitch of 6, then entered the 5 th layer of the 2 nd rectangular stator slot at a pitch of 6, then entered the 6 th layer of the 44 th rectangular stator slot at a pitch of 6, then entered the 5 th layer of the 38 th rectangular stator slot at a pitch of 6, then at a pitch of 6 into the 6 th layer of the 32 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 26 th rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 20 th rectangular stator slot, after being wound in series for one turn to the 5 th layer of the 14 th rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 8 th rectangular stator slot, then at a pitch of 6 into the 3 rd layer of the 2 nd rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 44 th rectangular stator slot, then at a pitch of 6 into the 3 rd layer of the 38 th rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 32 th rectangular stator slot, then at a pitch of 6 into the 3 rd layer of the 26 th rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 20 th rectangular stator slot, after being wound in series to the 3 rd layer of the 14 th rectangular stator slot, then enter the 2 nd layer of the 8 th rectangular stator slot with a pitch of 6, then enter the 1 st layer of the 2 nd rectangular stator slot with a pitch of 6, then enter the 2 nd layer of the 44 th rectangular stator slot with a pitch of 6, then enter the 1 st layer of the 38 th rectangular stator slot with a pitch of 6, then enter the 2 nd layer of the 32 nd rectangular stator slot with a pitch of 6, then enter the 1 st layer of the 26 th rectangular stator slot with a pitch of 6, then enter the 2 nd layer of the 20 th rectangular stator slot with a pitch of 6, go around in series for one turn to the 1 st layer terminal X2 of the 14 th rectangular stator slot, and finally connect to the star point connection line (2) from the terminal X2;

the wire connected to the terminal X3 entered from the 8 th layer of the 9 th rectangular stator slot, then entered at a pitch of 6 into the 7 th layer of the 3 rd rectangular stator slot, then entered at a pitch of 6 into the 8 th layer of the 45 th rectangular stator slot, then entered at a pitch of 6 into the 7 th layer of the 39 th rectangular stator slot, then entered at a pitch of 6 into the 8 th layer of the 33 th rectangular stator slot, then entered at a pitch of 6 into the 7 th layer of the 27 th rectangular stator slot, then entered at a pitch of 6 into the 8 th layer of the 21 st rectangular stator slot, followed by being wound in series for one turn to the 7 th layer of the 15 th rectangular stator slot, then entered at a pitch of 6 into the 6 th layer of the 9 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 3 rd rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 45 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 39 th rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 33 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 27 th rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 21 st rectangular stator slot, after being wound in series for one turn to the 5 th layer of the 15 th rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 9 th rectangular stator slot, then at a pitch of 6 into the 3 rd layer of the 3 rd rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 45 th rectangular stator slot, then at a pitch of 6 into the 3 rd layer of the 39 th rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 33 th rectangular stator slot, then at a pitch of 6 into the 3 rd layer of the 27 th rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 21 st rectangular stator slot, after being wound in series to the 3 rd layer of the 15 th rectangular stator slot, then enter the 2 nd layer of the 9 th rectangular stator slot with a pitch of 6, then enter the 1 st layer of the 3 rd rectangular stator slot with a pitch of 6, then enter the 2 nd layer of the 45 th rectangular stator slot with a pitch of 6, then enter the 1 st layer of the 39 th rectangular stator slot with a pitch of 6, then enter the 2 nd layer of the 33 th rectangular stator slot with a pitch of 6, then enter the 1 st layer of the 27 th rectangular stator slot with a pitch of 6, then enter the 2 nd layer of the 21 st rectangular stator slot with a pitch of 6, reach the 1 st layer X4 of the 15 th rectangular stator slot after being wound in series for one turn, and finally exit from the terminal X4 and connect to the star point connection line (2);

the winding mode of the first branch of the V-phase winding structure is as follows: the winding wire connected to the terminal V2 entered first from the 1 st layer of the 10 th rectangular stator slot, then entered the 2 nd layer of the 16 th rectangular stator slot at a pitch of 6, then entered the 1 st layer of the 22 nd rectangular stator slot at a pitch of 6, then entered the 2 nd layer of the 28 th rectangular stator slot at a pitch of 6, then entered the 1 st layer of the 34 th rectangular stator slot at a pitch of 6, then entered the 2 nd layer of the 40 th rectangular stator slot at a pitch of 6, then entered the 1 st layer of the 46 th rectangular stator slot at a pitch of 6, arrived at the 2 nd layer of the 4 th rectangular stator slot after being wound in series for one turn, then entered the 3 rd layer of the 10 th rectangular stator slot at a pitch of 6, then entered the 4 th layer of the 16 th rectangular stator slot at a pitch of 6, then entered the 3 rd layer of the 22 th rectangular stator slot at a pitch of 6, then entered the 4 th layer of the 28 th rectangular stator slot at a pitch of 6, then at a pitch of 6 into the 3 rd layer of the 34 th rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 40 th rectangular stator slot, then at a pitch of 6 into the 3 rd layer of the 46 th rectangular stator slot, after being wound in series for one turn to the 4 th layer of the 4 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 10 th rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 16 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 22 th rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 28 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 34 th rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 40 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 46 th rectangular stator slot, after being wound in series to the 6 th layer of the 4 th rectangular stator slot, then at a pitch of the 7 th layer into the 10 th rectangular stator slot, then at a pitch of the 8 th layer into the 16 th rectangular stator slot, then at a pitch of the 6 th layer into the 22 th rectangular stator slot, then at a pitch of the 6 th layer into the 28 th rectangular stator slot, then at a pitch of the 6 th layer into the 34 th rectangular stator slot, then at a pitch of the 6 th layer into the 40 th rectangular stator slot, then at a pitch of the 6 th layer into the 46 th rectangular stator slot, and after being wound in series for one turn, reaching the 8 th layer terminal V1 of the 4 th rectangular stator slot, the terminal V1 is connected to the terminal Y3 by a V-phase first series connection wire (5);

the wire connected to the terminal V4 entered from the 1 st layer of the 11 th rectangular stator slot, then entered the 2 nd layer of the 17 th rectangular stator slot at a pitch of 6, then entered the 1 st layer of the 23 rd rectangular stator slot at a pitch of 6, then entered the 2 nd layer of the 29 th rectangular stator slot at a pitch of 6, then entered the 1 st layer of the 35 th rectangular stator slot at a pitch of 6, then entered the 2 nd layer of the 41 th rectangular stator slot at a pitch of 6, then entered the 1 st layer of the 47 th rectangular stator slot at a pitch of 6, arrived at the 2 nd layer of the 5 th rectangular stator slot after being wound in series for one turn, then entered the 3 rd layer of the 11 th rectangular stator slot at a pitch of 6, then entered the 4 th layer of the 17 th rectangular stator slot at a pitch of 6, then entered the 3 rd layer of the 23 th rectangular stator slot at a pitch of 6, then entered the 4 th layer of the 29 th rectangular stator slot at a pitch of 6, then at a pitch of 6 into the 3 rd layer of the 35 th rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 41 th rectangular stator slot, then at a pitch of 6 into the 3 rd layer of the 47 th rectangular stator slot, after being wound in series for one turn to the 4 th layer of the 5 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 11 th rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 17 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 23 rd rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 29 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 35 th rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 41 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 47 th rectangular stator slot, after being wound in series to the 6 th layer of the 5 th rectangular stator slot, then at a pitch of 6 into the 7 th layer of the 11 th rectangular stator slot, then at a pitch of 6 into the 8 th layer of the 17 th rectangular stator slot, then at a pitch of 6 into the 7 th layer of the 23 th rectangular stator slot, then at a pitch of 6 into the 8 th layer of the 29 th rectangular stator slot, then at a pitch of 6 into the 7 th layer of the 35 th rectangular stator slot, then at a pitch of 6 into the 8 th layer of the 41 th rectangular stator slot, then at a pitch of 6 into the 7 th layer of the 47 th rectangular stator slot, and after being wound in series for one turn to reach the 8 th layer terminal V3 of the 5 th rectangular stator slot, the terminal V3 is connected to the terminal Y1 by a V-phase second series connection wire (6);

the winding mode of the second branch of the V-phase winding structure is as follows: the winding wire connected to the terminal Y1 entered first from the 8 th layer of the 10 th rectangular stator slot, then entered the 7 th layer of the 4 th rectangular stator slot at a pitch of 6, then entered the 8 th layer of the 46 th rectangular stator slot at a pitch of 6, then entered the 7 th layer of the 40 th rectangular stator slot at a pitch of 6, then entered the 8 th layer of the 34 th rectangular stator slot at a pitch of 6, then entered the 7 th layer of the 28 th rectangular stator slot at a pitch of 6, then entered the 8 th layer of the 22 th rectangular stator slot at a pitch of 6, arrived at the 7 th layer of the 16 th rectangular stator slot after being wound in series for one turn, then entered the 6 th layer of the 10 th rectangular stator slot at a pitch of 6, then entered the 5 th layer of the 4 th rectangular stator slot at a pitch of 6, then entered the 6 th layer of the 46 th rectangular stator slot at a pitch of 6, then entered the 5 th layer of the 40 th rectangular stator slot at a pitch of 6, then at a pitch of 6 into the 6 th layer of the 34 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 28 th rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 22 th rectangular stator slot, after being wound in series for one turn to the 5 th layer of the 16 th rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 10 th rectangular stator slot, then at a pitch of 6 into the 3 rd layer of the 4 th rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 46 th rectangular stator slot, then at a pitch of 6 into the 3 rd layer of the 40 th rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 34 th rectangular stator slot, then at a pitch of 6 into the 3 rd layer of the 28 th rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 22 th rectangular stator slot, after being wound in series to the 3 rd layer of the 16 th rectangular stator slot, then at a pitch of 6 into the 2 nd layer of the 10 th rectangular stator slot, then at a pitch of 6 into the 1 st layer of the 4 th rectangular stator slot, then at a pitch of 6 into the 2 nd layer of the 46 th rectangular stator slot, then at a pitch of 6 into the 1 st layer of the 40 th rectangular stator slot, then at a pitch of 6 into the 2 nd layer of the 34 th rectangular stator slot, then at a pitch of 6 into the 1 st layer of the 28 th rectangular stator slot, then at a pitch of 6 into the 2 nd layer of the 22 nd rectangular stator slot, wound in series for one turn to reach the 1 st layer terminal Y2 of the 16 th rectangular stator slot, and finally led out of the terminal Y2 and connected to the star point connection line (2);

the winding wire connected to the terminal Y3 entered from the 8 th layer of the 11 th rectangular stator slot, then entered at a pitch of 6 into the 7 th layer of the 5 th rectangular stator slot, then entered at a pitch of 6 into the 8 th layer of the 47 th rectangular stator slot, then entered at a pitch of 6 into the 7 th layer of the 41 th rectangular stator slot, then entered at a pitch of 6 into the 8 th layer of the 35 th rectangular stator slot, then entered at a pitch of 6 into the 7 th layer of the 29 th rectangular stator slot, then entered at a pitch of 6 into the 8 th layer of the 23 rd rectangular stator slot, followed by being wound in series for one turn to the 7 th layer of the 17 th rectangular stator slot, then entered at a pitch of 6 into the 6 th layer of the 11 th rectangular stator slot, then entered at a pitch of 6 into the 5 th layer of the 5 th rectangular stator slot, then entered at a pitch of 6 into the 6 th layer of the 47 th rectangular stator slot, then entered at a pitch of 6 into the 5 th layer of the 41 th rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 35 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 29 th rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 23 th rectangular stator slot, after being wound in series for one turn to the 5 th layer of the 17 th rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 11 th rectangular stator slot, then at a pitch of 6 into the 3 rd layer of the 5 th rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 47 th rectangular stator slot, then at a pitch of 6 into the 3 rd layer of the 41 th rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 35 th rectangular stator slot, then at a pitch of 6 into the 3 rd layer of the 29 th rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 23 th rectangular stator slot, after being wound in series to the 3 rd layer of the 17 th rectangular stator slot, then enter the 11 th layer 2 of rectangular stator slots with a pitch of 6, then enter the 5 th layer 1 of rectangular stator slots with a pitch of 6, then enter the 47 th layer 2 of rectangular stator slots with a pitch of 6, then enter the 41 st layer 1 of rectangular stator slots with a pitch of 6, then enter the 35 th layer 2 of rectangular stator slots with a pitch of 6, then enter the 29 th layer 1 of rectangular stator slots with a pitch of 6, then enter the 23 rd layer 2 of rectangular stator slots with a pitch of 6, go in series for one turn to reach the 17 th layer 1 terminal Y4 of rectangular stator slots, finally exit from the terminal Y4 and connect to the star point connection line (2);

the winding mode of the first branch of the W-phase winding structure is as follows: the winding wire connected to the terminal W2 entered first from the 1 st layer of the 12 th rectangular stator slot, then entered the 2 nd layer of the 18 th rectangular stator slot at a pitch of 6, then entered the 1 st layer of the 24 th rectangular stator slot at a pitch of 6, then entered the 2 nd layer of the 30 th rectangular stator slot at a pitch of 6, then entered the 1 st layer of the 36 th rectangular stator slot at a pitch of 6, then entered the 2 nd layer of the 42 th rectangular stator slot at a pitch of 6, then entered the 1 st layer of the 48 th rectangular stator slot at a pitch of 6, arrived at the 2 nd layer of the 6 th rectangular stator slot after being wound in series for one turn, then entered the 3 rd layer of the 12 th rectangular stator slot at a pitch of 6, then entered the 4 th layer of the 18 th rectangular stator slot at a pitch of 6, then entered the 3 rd layer of the 24 th rectangular stator slot at a pitch of 6, then entered the 4 th layer of the 30 th rectangular stator slot at a pitch of 6, then at a pitch of 6 into the 3 rd layer of the 36 th rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 42 th rectangular stator slot, then at a pitch of 6 into the 3 rd layer of the 48 th rectangular stator slot, after being wound in series for one turn to the 4 th layer of the 6 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 12 th rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 18 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 24 th rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 30 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 36 th rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 42 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 48 th rectangular stator slot, after being wound in series to the 6 th layer of the 6 th rectangular stator slot, then at a pitch of 6 into the 7 th layer of the 12 th rectangular stator slot, then at a pitch of 6 into the 8 th layer of the 18 th rectangular stator slot, then at a pitch of 6 into the 7 th layer of the 24 th rectangular stator slot, then at a pitch of 6 into the 8 th layer of the 30 th rectangular stator slot, then at a pitch of 6 into the 7 th layer of the 36 th rectangular stator slot, then at a pitch of 6 into the 8 th layer of the 42 th rectangular stator slot, then at a pitch of 6 into the 7 th layer of the 48 th rectangular stator slot, and after being wound in series for one turn, to the 8 th layer terminal W1 of the 6 th rectangular stator slot, the terminal W1 is connected (3) to the terminal Z3 by a W-phase first series connection wire;

the wire connected to the terminal W4 entered from the 1 st layer of the 13 th rectangular stator slot, then entered the 2 nd layer of the 19 th rectangular stator slot at a pitch of 6, then entered the 1 st layer of the 25 th rectangular stator slot at a pitch of 6, then entered the 2 nd layer of the 31 st rectangular stator slot at a pitch of 6, then entered the 1 st layer of the 37 th rectangular stator slot at a pitch of 6, then entered the 2 nd layer of the 43 th rectangular stator slot at a pitch of 6, then entered the 1 st layer of the 1 st rectangular stator slot at a pitch of 6, arrived at the 2 nd layer of the 7 th rectangular stator slot after being wound in series for one turn, then entered the 3 rd layer of the 13 th rectangular stator slot at a pitch of 6, then entered the 4 th layer of the 19 th rectangular stator slot at a pitch of 6, then entered the 3 rd layer of the 25 th rectangular stator slot at a pitch of 6, then entered the 4 th layer of the 31 th rectangular stator slot at a pitch of 6, then at a pitch of 6 into the 3 rd layer of the 37 th rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 43 th rectangular stator slot, then at a pitch of 6 into the 3 rd layer of the 1 st rectangular stator slot, after being wound in series for one turn to the 4 th layer of the 7 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 13 th rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 19 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 25 th rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 31 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 37 th rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 43 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 1 st rectangular stator slot, after being wound in series to the 6 th layer of the 7 th rectangular stator slot, then at a pitch of 6 into the 7 th layer of the 13 th rectangular stator slot, then at a pitch of 6 into the 8 th layer of the 19 th rectangular stator slot, then at a pitch of 6 into the 7 th layer of the 25 th rectangular stator slot, then at a pitch of 6 into the 8 th layer of the 31 th rectangular stator slot, then at a pitch of 6 into the 7 th layer of the 37 th rectangular stator slot, then at a pitch of 6 into the 8 th layer of the 43 th rectangular stator slot, then at a pitch of 6 into the 7 th layer of the 1 st rectangular stator slot, and after being wound in series for one turn to reach the 8 th layer terminal W3 of the 7 th rectangular stator slot, the terminal W3 is connected to the terminal Z3 by a W-phase second series connection wire (4);

the winding mode of the second branch of the W-phase winding structure is as follows: the winding wire connected to the terminal Z1 entered first from the 8 th layer of the 12 th rectangular stator slot, then entered the 7 th layer of the 6 th rectangular stator slot at a pitch of 6, then entered the 8 th layer of the 48 th rectangular stator slot at a pitch of 6, then entered the 7 th layer of the 42 th rectangular stator slot at a pitch of 6, then entered the 8 th layer of the 36 th rectangular stator slot at a pitch of 6, then entered the 7 th layer of the 30 th rectangular stator slot at a pitch of 6, then entered the 8 th layer of the 24 th rectangular stator slot at a pitch of 6, arrived at the 7 th layer of the 18 th rectangular stator slot after being wound in series for one turn, then entered the 6 th layer of the 12 th rectangular stator slot at a pitch of 6, then entered the 5 th layer of the 6 th rectangular stator slot at a pitch of 6, then entered the 6 th layer of the 48 th rectangular stator slot at a pitch of 6, then entered the 5 th layer of the 42 th rectangular stator slot at a pitch of 6, then at a pitch of 6 into the 6 th layer of the 36 th rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 30 th rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 24 th rectangular stator slot, after being wound in series for one turn to the 5 th layer of the 18 th rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 12 th rectangular stator slot, then at a pitch of 6 into the 3 rd layer of the 6 th rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 48 th rectangular stator slot, then at a pitch of 6 into the 3 rd layer of the 42 th rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 36 th rectangular stator slot, then at a pitch of 6 into the 3 rd layer of the 30 th rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 24 th rectangular stator slot, after being wound in series to the 3 rd layer of the 18 th rectangular stator slot, then enter the 2 nd layer of the 12 th rectangular stator slot with a pitch of 6, then enter the 1 st layer of the 6 th rectangular stator slot with a pitch of 6, then enter the 2 nd layer of the 48 th rectangular stator slot with a pitch of 6, then enter the 1 st layer of the 42 th rectangular stator slot with a pitch of 6, then enter the 2 nd layer of the 36 th rectangular stator slot with a pitch of 6, then enter the 1 st layer of the 30 th rectangular stator slot with a pitch of 6, then enter the 2 nd layer of the 24 th rectangular stator slot with a pitch of 6, reach the 1 st layer terminal Z2 of the 18 th rectangular stator slot after being wound in series for one turn, finally exit from the terminal Z2 and connect to the star point connection line (2);

the wire connected to the terminal Z3 entered from the 8 th layer of the 13 th rectangular stator slot, then entered at a pitch of 6 into the 7 th layer of the 7 th rectangular stator slot, then entered at a pitch of 6 into the 8 th layer of the 1 st rectangular stator slot, then entered at a pitch of 6 into the 7 th layer of the 43 th rectangular stator slot, then entered at a pitch of 6 into the 8 th layer of the 37 th rectangular stator slot, then entered at a pitch of 6 into the 7 th layer of the 31 st rectangular stator slot, then entered at a pitch of 6 into the 8 th layer of the 25 th rectangular stator slot, followed by one turn in series by reaching the 7 th layer of the 19 th rectangular stator slot, then entered at a pitch of 6 into the 6 th layer of the 13 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 7 th rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 1 st rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 43 th rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 37 th rectangular stator slot, then at a pitch of 6 into the 5 th layer of the 31 th rectangular stator slot, then at a pitch of 6 into the 6 th layer of the 25 th rectangular stator slot, after being wound in series for one turn to the 5 th layer of the 19 th rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 13 th rectangular stator slot, then at a pitch of 6 into the 3 rd layer of the 7 th rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 1 st rectangular stator slot, then at a pitch of 6 into the 3 rd layer of the 43 rd rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 37 th rectangular stator slot, then at a pitch of 6 into the 3 rd layer of the 31 th rectangular stator slot, then at a pitch of 6 into the 4 th layer of the 25 th rectangular stator slot, after being wound in series to the 3 rd layer of the 19 th rectangular stator slot, then at a pitch of 6 into the 2 nd layer of the 13 th rectangular stator slot, then at a pitch of 6 into the 1 st layer of the 7 th rectangular stator slot, then at a pitch of 6 into the 2 nd layer of the 1 st rectangular stator slot, then at a pitch of 6 into the 1 st layer of the 43 th rectangular stator slot, then at a pitch of 6 into the 2 nd layer of the 37 th rectangular stator slot, then at a pitch of 6 into the 1 st layer of the 31 th rectangular stator slot, then at a pitch of 6 into the 2 nd layer of the 25 th rectangular stator slot, and finally after being wound in series for one turn, the 1 st layer terminal Z4 reaching the 19 th rectangular stator slot is led out from the terminal Z4 and connected to the star point connection line (2).