Hexapole fifty-four-slot flat copper wire motor three-branch balanced winding and method of using same

Abstract

The present application relates to the field of motor winding parts arranged in slots, in particular to a six-pole fifty-four-slot flat copper wire motor three-branch balanced winding and a using method thereof. The six-pole fifty-four-slot flat copper wire motor three-branch balanced winding comprises three-phase flat copper wire windings symmetrically distributed in the circumferential direction of the core slot, characterized in that: the span of the welding end (1) is equal, and the height of the welding end (1) lead-out wire is equal; the power lead-out wire end (3) is composed of four U-pin wire types and one I-pin wire type; the first layer of the power lead-out wire end (3) is composed of one I-pin wire (4) and one equal-span U-pin wire (5); the second layer and the third layer are both composed of one equal-span U-pin wire (6); the fourth layer and the fifth layer are both composed of one equal-span U-pin wire (7); and the sixth layer is composed of one equal-span U-pin wire (8). The present application has compact structure, balanced three-phase current, and balanced branch current of each phase.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of motor winding parts arranged in slots, in particular to a six-pole fifty-four-slot flat copper wire motor three-branch balanced winding and a using method thereof. BACKGROUND

[0002] The flat copper wire driving motor for electric vehicles generally has the problems of unbalanced current of each phase winding branch, many special-shaped wires, and poor mass production process. When the power frequency gradually increases, potential imbalance occurs between the branches of the same phase, which further causes uneven distribution of current between the parallel branches, and there is a circulating current between the branches, which eventually leads to uneven heating of the inner and outer armature winding branches, and further damages the insulation system of the motor. The flat copper wire motor has a complex structure of overbridge lines, star point connection lines and power supply lead-out lines connected at the end of the winding due to multiple parallel branches, which cannot meet the requirements of automatic wiring process. SUMMARY

[0003] In order to overcome the defects of the prior art, a six-pole fifty-four-slot flat copper wire motor three-branch balanced winding and a using method thereof are disclosed, which has a compact structure and balanced current.

[0004] The present application achieves the purpose of the invention through the following technical solutions:

[0005] A six-pole fifty-four-slot flat copper wire motor three-branch balanced winding, comprising a three-phase flat copper wire winding distributed in the core slots in a circumferential direction, characterized in that: the three-phase flat copper wire winding comprises a straight line portion of the wire distributed in the core slots, a welded end distributed on one side of the core end portion, and a power supply lead-out line end distributed on the other side of the core,

[0006] The span of the welded end is equal, and the height of the welded end lead-out line is equal; the power supply lead-out line end is composed of four U-pin wire types and one I-pin wire type, the first layer of the power supply lead-out line end is composed of one I-pin wire and one equal-span U-pin wire; the second layer and the third layer are each composed of one equal-span U-pin wire; the fourth layer and the fifth layer are each composed of one equal-span U-pin wire; the sixth layer is composed of one equal-span U-pin wire; the I-pin wire includes a U-phase power supply line, a V-phase power supply line, a W-phase power supply line, and a star point line when the winding is connected in Y, and is distributed at the end of the first layer winding in the core slots; there is no other protruding special-shaped wire and overbridge line.

[0007] The three-branch balanced winding of the six-pole fifty-four-slot flat copper wire motor is characterized in that the three-phase flat copper wire winding is a six-layer winding, each phase winding is composed of three parallel branches, and the connection sequence of each parallel branch is as follows: sequentially entering from the first layer L1 of the core slot, sequentially passing through the second layer L2, the third layer L3, the fourth layer L4, the fifth layer L5, and the sixth layer L6 in the forward direction, then passing through the sixth layer L6, the fifth layer L5, the fourth layer L4, the third layer L3, the second layer L2, and the first layer L1 in the reverse direction, then sequentially passing through the first layer L1, the second layer L2, the third layer L3, the fourth layer L4, the fifth layer L5, and the sixth layer L6 in the forward direction, then sequentially passing through the sixth layer L6, the fifth layer L5, the fourth layer L4, the third layer L3, the second layer L2, and the first layer L1 in the reverse direction, then sequentially passing through the first layer L1, the second layer L2, the third layer L3, the fourth layer L4, the fifth layer L5, and the sixth layer L6 in the forward direction, and finally sequentially passing through the sixth layer L6, the fifth layer L5, the fourth layer L4, the third layer L3, the second layer L2, and the first layer L1 in the reverse direction.

[0008] The three-branch balanced winding of the six-pole fifty-four-slot flat copper wire motor is characterized in that the three-phase flat copper wire winding is a six-layer winding, each phase winding is composed of three parallel branches, and the connection sequence of each parallel branch is as follows: sequentially entering from the first layer L1 of the core slot, sequentially passing through the second layer L2, the third layer L3, the fourth layer L4, the fifth layer L5, and the sixth layer L6 in the forward direction, then passing through the sixth layer L6, the fifth layer L5, the fourth layer L4, the third layer L3, the second layer L2, and the first layer L1 in the reverse direction, then sequentially passing through the first layer L1, the second layer L2, the third layer L3, the fourth layer L4, the fifth layer L5, and the sixth layer L6 in the forward direction, then sequentially passing through the sixth layer L6, the fifth layer L5, the fourth layer L4, the third layer L3, the second layer L2, and the first layer L1 in the reverse direction, then sequentially passing through the first layer L1, the second layer L2, the third layer L3, the fourth layer L4, the fifth layer L5, and the sixth layer L6 in the forward direction, and finally sequentially passing through the sixth layer L6, the fifth layer L5, the fourth layer L4, the third layer L3, the second layer L2, and the first layer L1 in the reverse direction. Figure 7 ) or a delta connection ( Figure 9 );

[0009] The three-phase flat copper wire winding adopts a short pitch Y of eight, a full pitch Y of nine, or a long pitch Y of ten.

[0010] The three-branch balanced winding of the six-pole fifty-four-slot flat copper wire motor is characterized in that the U-phase power line, the V-phase power line, the W-phase power line, and the star point line (when the winding adopts a Y connection) are all distributed at the end of the first layer winding of the core slot.

[0011] The use method of the three-branch balanced winding of the six-pole fifty-four-slot flat copper wire motor is characterized in that the following steps are sequentially implemented:

[0012] The first end U1 of the U1-X1 branch of the U-phase winding enters from the first layer L1 of the 1st winding slot in the current flow direction, and finally flows out from the first layer L1 of the 12th slot, and the winding connection sequence is as follows: 1st slot L1→9th slot L2→19th slot L3→27th slot L4→37th slot L5→45th slot L6→54th slot L6→46th slot L5→36th slot L4→28th slot L3→18th slot L2→10th slot L1→2nd slot L1→10th slot L2→20th slot L3→28th slot L4→38th slot L5→46th slot L6→1st slot L6→47th slot L5→37th slot L4→29th slot L3→19th slot L2→11th slot L1→3rd slot L1→11th slot L2→21st slot L3→29th slot L4→39th slot L5→47th slot L6→2nd slot L6→48th slot L5→38th slot L4→30th slot L3→20th slot L2→12th slot L1.

[0013] The first end U2 of the branch 2 of the U-phase winding, i.e. U2-X2, enters from the winding 19 slot first layer L1 and finally flows out from the 30 slot first layer L1 along the current flow direction, and the winding connection sequence is: 19 slot L1→27 slot L2→37 slot L3→45 slot L4→1 slot L5→9 slot L6→18 slot L6→10 slot L5→54 slot L4→46 slot L3→36 slot L2→28 slot L1→20 slot L1→28 slot L2→38 slot L3→46 slot L4→2 slot L5→10 slot L6→19 slot L6→11 slot L4→1 slot L3→47 slot L2→29 slot L1→21 slot L1→29 slot L2→39 slot L3→47 slot L4→3 slot L5→11 slot L6→20 slot L6→12 slot L5→2 slot L4→48 slot L3→38 slot L2→30 slot L1;

[0014] The first end U1 of the branch 3 of the U-phase winding, i.e. U3-X3, enters from the winding 37 slot first layer L1 and finally flows out from the 48 slot first layer L1 along the current flow direction, and the winding connection sequence is: 37 slot L1→45 slot L2→1 slot L3→9 slot L4→19 slot L5→27 slot L6→36 slot L6→28 slot L5→18 slot L4→10 slot L3→54 slot L2→46 slot L1→38 slot L1→46 slot L2→2 slot L3→10 slot L4→20 slot L5→28 slot L6→37 slot L6→29 slot L5→19 slot L4→11 slot L3→1 slot L2→47 slot L1→39 slot L1→47 slot L2→3 slot L3→11 slot L4→21 slot L5→29 slot L6→38 slot L6→30 slot L5→20 slot L4→12 slot L3→2 slot L2→48 slot L1;

[0015] The first end V1 of the branch 1 of the V-phase winding, i.e. V1-Y1, enters from the winding 7 slot first layer L1 and finally flows out from the 18 slot first layer L1 along the current flow direction, and the winding connection sequence is: 7 slot L1→15 slot L2→25 slot L3→33 slot L4→43 slot L5→51 slot L6→6 slot L6→52 slot L5→42 slot L4→34 slot L3→24 slot L2→16 slot L1→8 slot L1→16 slot L2→26 slot L3→34 slot L4→44 slot L5→52 slot L6→7 slot L6→53 slot L5→43 slot L4→35 slot L3→25 slot L2→17 slot L1→9 slot L1→17 slot L2→27 slot L3→35 slot L4→45 slot L5→53 slot L6→8 slot L6→54 slot L5→44 slot L4→36 slot L3→26 slot L2→18 slot L1; the specific connection method is shown in Figure 8 ;

[0016] The first end V2 of the branch 2 of the V-phase winding, i.e. V2-Y2, enters from the winding 25 slot first layer L1 along the current flow direction, and finally flows out from the 36 slot first layer L1, and the winding connection sequence is: 25 slot L1→33 slot L2→43 slot L3→51 slot L4→7 slot L5→15 slot L6→24 slot L6→16 slot L5→6 slot L4→52 slot L3→42 slot L2→34 slot L1→26 slot L1→34 slot L2→44 slot L3→52 slot L4→8 slot L5→16 slot L6→25 slot L6→17 slot L5→7 slot L4→53 slot L3→43 slot L2→35 slot L1→27 slot L1→35 slot L2→45 slot L3→53 slot L4→9 slot L5→17 slot L6→26 slot L6→18 slot L5→8 slot L4→54 slot L3→44 slot L2→36 slot L1;

[0017] The first end V3 of the branch 3 of the V-phase winding, i.e. V3-Y3, enters from the winding 43 slot first layer L1 along the current flow direction, and finally flows out from the 54 slot first layer L1, and the winding connection sequence is: 43 slot L1→51 slot L2→7 slot L3→15 slot L4→25 slot L5→33 slot L6→42 slot L6→34 slot L5→24 slot L4→16 slot L3→6 slot L2→52 slot L1→44 slot L1→52 slot L2→8 slot L3→16 slot L4→26 slot L5→34 slot L6→43 slot L6→35 slot L5→25 slot L4→17 slot L3→7 slot L2→53 slot L1→45 slot L1→53 slot L2→9 slot L3→17 slot L4→27 slot L5→35 slot L6→44 slot L6→36 slot L5→26 slot L4→18 slot L3→8 slot L2→54 slot L1;

[0018] The first end W1 of the branch 1 of the W-phase winding, i.e. W1-Z1, enters from the winding 13 slot first layer L1 along the current flow direction, and finally flows out from the 24 slot first layer L1, and the winding connection sequence is: 13 slot L1→21 slot L2→31 slot L3→39 slot L4→49 slot L5→3 slot L6→12 slot L6→4 slot L5→48 slot L4→40 slot L3→30 slot L2→22 slot L1→14 slot L1→22 slot L2→32 slot L3→40 slot L4→50 slot L5→4 slot L6→13 slot L6→5 slot L5→49 slot L4→41 slot L3→31 slot L2→23 slot L1→15 slot L1→23 slot L2→33 slot L3→41 slot L4→51 slot L5→5 slot L6→14 slot L6→6 slot L5→50 slot L4→42 slot L3→32 slot L2→24 slot L1;

[0019] The first end W2 of the branch 2 of the W-phase winding, i.e. W2-Z2, enters from the winding 31 slot first layer L1 along the current flow direction and finally flows out from the 42 slot first layer L1, and the winding connection sequence is in turn: 31 slot L1→39 slot L2→49 slot L3→3 slot L4→13 slot L5→21 slot L6→30 slot L6→22 slot L5→12 slot L4→4 slot L3→48 slot L2→40 slot L1→32 slot L1→40 slot L2→50 slot L3→4 slot L4→14 slot L5→22 slot L6→31 slot L6→23 slot L5→13 slot L4→5 slot L3→49 slot L2→41 slot L1→33 slot L1→41 slot L2→51 slot L3→5 slot L4→15 slot L5→23 slot L6→32 slot L6→24 slot L5→14 slot L4→6 slot L3→50 slot L2→42 slot L1;

[0020] The first end W3 of the branch 3 of the W-phase winding, i.e. W3-Z3, enters from the winding 49 slot first layer L1 along the current flow direction and finally flows out from the 6 slot first layer L1, and the winding connection sequence is in turn: 49 slot L1→3 slot L2→13 slot L3→21 slot L4→31 slot L5→39 slot L6→48 slot L6→40 slot L5→30 slot L4→22 slot L3→12 slot L2→4 slot L1→50 slot L1→4 slot L2→14 slot L3→22 slot L4→32 slot L5→40 slot L6→49 slot L6→41 slot L5→31 slot L4→23 slot L3→13 slot L2→5 slot L1→51 slot L1→5 slot L2→15 slot L3→23 slot L4→33 slot L5→41 slot L6→50 slot L6→42 slot L5→32 slot L4→24 slot L3→14 slot L2→6 slot L1.

[0021] The present application comprises three-phase windings alternately wound in different stator slot groups along the circumferential direction of the stator core, each phase winding comprises three parallel branches, and the three branches are rotationally symmetrical along the axial direction of the stator core. Based on this, under power supply conditions, the magnetic field distribution of the three branches of the same phase winding is the same in each slot layer in the same stator slot. Correspondingly, the potentials of the three branches are balanced with each other. Based on this potential balance, no circulating current phenomenon occurs between the three branches, thereby improving the efficiency of the motor and reducing the temperature rise of the motor. In the case of basically unchanged volume of the stator assembly, the winding can occupy more space in the stator slot, thereby improving the copper fullness of the stator assembly and enabling the corresponding motor to have better performance, such as higher efficiency and lower temperature rise. In the case of basically unchanged performance of the motor, the stator assembly can have a smaller size and lighter weight, thereby facilitating the spatial arrangement of the corresponding motor in an electric vehicle and reducing the weight and cost of the vehicle. The type of U-shaped flat wire required by the stator assembly and the motor is less, the lead-in wire of each branch of the winding is introduced from a part of the first slot layer, and the lead-out wire of each star point of the winding is introduced from another part of the first slot layer. In this way, the mold for molding the wire type of the mass production line can be reduced, the manufacturing difficulty of the stator assembly is reduced, and the production and manufacturing efficiency of the stator assembly and the motor is improved.

[0022] The present application has the following advantages:

[0023] 1. Three-phase winding current balance and branch current balance of each phase winding can be achieved, thereby solving the adverse effects caused by increased winding alternating current loss due to unbalanced branch current, reducing branch circulating current, and thereby improving the efficiency of the motor;

[0024] 2. Because the problem of unbalanced branch current is solved, the unevenness of the temperature distribution in the inner and outer layers of the flat copper wire winding is improved, thereby improving the reliability of the entire stator insulation system;

[0025] 3. The winding welding end has the same distance, the same height, and consistent circumferential distribution, which facilitates automatic cutting, twisting, and welding processes, reduces the complexity of automatic equipment, and facilitates mass production automation;

[0026] 4. The entire motor winding has fewer wire types, requires less investment in production line equipment, and facilitates automatic wire insertion. There are a total of five wire types: two types of U-Pin wire and I-Pin wire in the first layer of the core slot, one type of U-Pin wire in the second and third layers of the core slot, one type of U-Pin wire in the fourth and fifth layers of the core slot, and one type of U-Pin wire in the sixth layer of the core slot;

[0027] 5. The power lead and star point line are located in the first layer winding (slot bottom first layer) of the core slot, which can utilize the yoke space of the winding end and the axial space of the winding end, and is beneficial to shorten the axial height of the motor winding end. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is the distribution diagram of the flat copper wire in the core slot in the present application,

[0029] Figure 2 is the phase distribution diagram of the U-phase, V-phase and W-phase short-pitch winding in the core slot in the present application,

[0030] Figure 3 is the first branch connection diagram of the U-phase winding in the present application,

[0031] Figure 4 is the second branch connection diagram of the U-phase winding in the present application,

[0032] Figure 5 is the third branch connection diagram of the U-phase winding in the present application,

[0033] Figure 6 is the connection diagram of the U-phase winding in the present application,

[0034] Figure 7 is the Y-connection winding end connection diagram of the three-phase winding in the present application,

[0035] Figure 8 is the connection diagram of the U-phase, V-phase and W-phase winding in the present application,

[0036] Figure 9 is the angular connection winding end connection diagram of the three-phase winding in the present application,

[0037] Figure 10 is the structure schematic diagram of the welding end of the three-phase winding in the present application,

[0038] Figure 11 is the structure schematic diagram of the lead end of the three-phase winding in the present application.

[0039] The component names represented by the reference signs are as follows:

[0040] 1: winding end welding end, 2: straight line part of the wire in the core and core slot, 3: power lead end, 4: first layer power lead I-pin line and star point lead (when Y-connection) in the core slot, 5: U-pin line in the first layer of the core slot, 6: U-pin line in the second layer and the third layer of the core slot, 7: U-pin line in the fourth layer and the fifth layer of the core slot, 8: U-pin line in the sixth layer of the core slot. DETAILED DESCRIPTION

[0041] The present application will be further described below through specific embodiments.

[0042] Embodiment 1

[0043] A six-pole fifty-four-slot flat copper wire motor three-branch balanced winding is short distance (Y=8), Y connection, parallel branch number (a=3), the winding connection structure is as shown in Figures 1-8 , and the specific structure is:

[0044] The winding development diagram is a six-layer flat copper wire winding, that is, there are 6 flat copper wires in each slot number, and the layer number of the flat wire from the slot bottom to the slot opening is numbered as 1, 2, 3, 4, 5, 6 layers, as shown in Figure 1 ;

[0045] The winding straight line part: according to the short distance (Y=8), the three-phase flat copper wire winding straight line part is evenly divided into three-phase symmetrical windings U phase, V phase and W phase, as shown in Figure 2 .

[0046] The winding is Y connection, and the parallel branch number a=3, and each phase winding is composed of three parallel branches, as shown in Figure 7 .

[0047] As shown in Figure 7 , the U phase winding is composed of branch 1 (U1-X1), branch 2 (U2-X2) and branch 3 (U3-X3), the V phase winding is composed of branch 1 (V1-Y1), branch 2 (V2-Y2) and branch 3 (V3-Y3), and the W phase winding is composed of branch 1 (W1-Z1), branch 2 (W2-Z2) and branch 3 (W3-Z3).

[0048] The first end U1 of the branch 1 of the U phase winding, that is, U1-X1, enters from the winding 1 slot first layer L1 along the current flow direction, and finally flows out from the 12 slot first layer L1, and the winding connection sequence is in turn: 1 slot L1→9 slot L2→19 slot L3→27 slot L4→37 slot L5→45 slot L6→54 slot L6→46 slot L5→36 slot L4→28 slot L3→18 slot L2→10 slot L1→2 slot L1→10 slot L2→20 slot L3→28 slot L4→38 slot L5→46 slot L6→1 slot L6→47 slot L5→37 slot L4→29 slot L3→19 slot L2→11 slot L1→3 slot L1→11 slot L2→21 slot L3→29 slot L4→39 slot L5→47 slot L6→2 slot L6→48 slot L5→38 slot L4→30 slot L3→20 slot L2→12 slot L1, and the specific connection method is as shown in Figure 3 or Figure 8 ;

[0049] The first end U2 of the branch 2 of the U-phase winding, i.e. U2-X2, enters from the winding 19 slot first layer L1 along the current flow direction and finally flows out from the 30 slot first layer L1, and the winding connection sequence is: 19 slot L1→27 slot L2→37 slot L3→45 slot L4→1 slot L5→9 slot L6→18 slot L6→10 slot L5→54 slot L4→46 slot L3→36 slot L2→28 slot L1→20 slot L1→28 slot L2→38 slot L3→46 slot L4→2 slot L5→10 slot L6→19 slot L6→11 slot L4→47 slot L3→37 slot L2→29 slot L1→21 slot L1→29 slot L2→39 slot L3→47 slot L4→3 slot L5→11 slot L6→20 slot L6→12 slot L5→2 slot L4→48 slot L3→38 slot L2→30 slot L1, and the specific connection method is as shown in Figure 4 or Figure 8 .

[0050] The first end U1 of the branch 3 of the U-phase winding, i.e. U3-X3, enters from the winding 37 slot first layer L1 along the current flow direction and finally flows out from the 48 slot first layer L1, and the winding connection sequence is: 37 slot L1→45 slot L2→1 slot L3→9 slot L4→19 slot L5→27 slot L6→36 slot L6→28 slot L5→18 slot L4→10 slot L3→54 slot L2→46 slot L1→38 slot L1→46 slot L2→2 slot L3→10 slot L4→20 slot L5→28 slot L6→37 slot L6→29 slot L5→19 slot L4→11 slot L3→1 slot L2→47 slot L1→39 slot L1→47 slot L2→3 slot L3→11 slot L4→21 slot L5→29 slot L6→38 slot L6→30 slot L5→20 slot L4→12 slot L3→2 slot L2→48 slot L1, and the specific connection method is as shown in Figure 5 or Figure 8 .

[0051] Similarly, the V-phase winding and the U-phase winding branch connection method are exactly the same, except that the starting slot is different: the first end V1 of the branch 1 (V1-Y1) of the V-phase winding enters from the winding 7 slot first layer L1 along the current flow direction and finally flows out from the 18 slot first layer L1; the first end V2 of the branch 2 (V2-Y2) of the V-phase winding enters from the winding 25 slot first layer L1 along the current flow direction and finally flows out from the 36 slot first layer L1; the first end V3 of the branch 3 (V3-Y3) of the V-phase winding enters from the winding 43 slot first layer L1 along the current flow direction and finally flows out from the 54 slot first layer L1; the detailed connection sequence of the three branches is as shown in Figure 8 .

[0052] The branch 1 of the V-phase winding, i.e., the head end V1 of V1-Y1, enters the first layer L1 of the 7th slot along the current flow direction, and finally flows out of the first layer L1 of the 18th slot. The winding connection sequence is: 7th slot L1 → 15th slot L2 → 25th slot L3 → 33rd slot L4 → 43rd slot L5 → 51st slot L6 → 6th slot L6 → 52nd slot L5 → 42nd slot L4 → 34th slot L3 → 24th slot L2 → 16th slot L1 → 8th slot L1 → 16th slot L1 Slot L2 → 26 slots L3 → 34 slots L4 → 44 slots L5 → 52 slots L6 → 7 slots L6 → 53 slots L5 → 43 slots L4 → 35 slots L3 → 25 slots L2 → 17 slots L1 → 9 slots L1 → 17 slots L2 → 27 slots L3 → 35 slots L4 → 45 slots L5 → 53 slots L6 → 8 slots L6 → 54 slots L5 → 44 slots L4 → 36 slots L3 → 26 slots L2 → 18 slots L1. The specific connection method is as follows: Figure 8 As shown;

[0053] The branch 2 of the V-phase winding, i.e., the head end V2 of V2-Y2, enters the first layer L1 of the 25th slot along the current flow direction, and finally flows out of the first layer L1 of the 36th slot. The winding connection sequence is: 25th slot L1 → 33rd slot L2 → 43rd slot L3 → 51st slot L4 → 7th slot L5 → 15th slot L6 → 24th slot L6 → 16th slot L5 → 6th slot L4 → 52nd slot L3 → 42nd slot L2 → 34th slot L1 → 26th slot L1 → 3 4 slot L2 → 44 slot L3 → 52 slot L4 → 8 slot L5 → 16 slot L6 → 25 slot L6 → 17 slot L5 → 7 slot L4 → 53 slot L3 → 43 slot L2 → 35 slot L1 → 27 slot L1 → 35 slot L2 → 45 slot L3 → 53 slot L4 → 9 slot L5 → 17 slot L6 → 26 slot L6 → 18 slot L5 → 8 slot L4 → 54 slot L3 → 44 slot L2 → 36 slot L1. The specific connection method is as follows: Figure 8 As shown;

[0054] The V-phase winding branch 3, i.e., the head end V3 of V3-Y3, enters the first layer L1 of the 43rd slot along the current flow direction, and finally flows out of the first layer L1 of the 54th slot. The winding connection sequence is: 43rd slot L1 → 51st slot L2 → 7th slot L3 → 15th slot L4 → 25th slot L5 → 33rd slot L6 → 42nd slot L6 → 34th slot L5 → 24th slot L4 → 16th slot L3 → 6th slot L2 → 52nd slot L1 → 44th slot L1 → 5 2 slots L2 → 8 slots L3 → 16 slots L4 → 26 slots L5 → 34 slots L6 → 43 slots L6 → 35 slots L5 → 25 slots L4 → 17 slots L3 → 7 slots L2 → 53 slots L1 → 45 slots L1 → 53 slots L2 → 9 slots L3 → 17 slots L4 → 27 slots L5 → 35 slots L6 → 44 slots L6 → 36 slots L5 → 26 slots L4 → 18 slots L3 → 8 slots L2 → 54 slots L1. The specific connection method is as follows: Figure 8 shown.

[0055] The W phase winding and U phase winding branch connection mode is exactly the same, only the starting slot is different: the first end W1 of W phase winding branch 1 (W1-Z1) enters from the winding 13 slot first layer L1 along the current flow direction, and finally flows out from the 24 slot first layer L1; the first end W2 of W phase winding branch 2 (W2-Z2) enters from the winding 31 slot first layer L1 along the current flow direction, and finally flows out from the 42 slot first layer L1; the first end W3 of W phase winding branch 3 (W3-Z3) enters from the winding 49 slot first layer L1 along the current flow direction, and finally flows out from the 6 slot first layer L1, and the three branch connection sequences are shown in Figure 8

[0056] The first end W1 of W phase winding branch 1 (W1-Z1) enters from the winding 13 slot first layer L1 along the current flow direction, and finally flows out from the 24 slot first layer L1, and the winding connection sequence is: 13 slot L1→21 slot L2→31 slot L3→39 slot L4→49 slot L5→3 slot L6→12 slot L6→4 slot L5→48 slot L4→40 slot L3→30 slot L2→22 slot L1→14 slot L1→22 slot L2→32 slot L3→40 slot L4→50 slot L5→4 slot L6→13 slot L6→5 slot L5→49 slot L4→41 slot L3→31 slot L2→23 slot L1→15 slot L1→23 slot L2→33 slot L3→41 slot L4→51 slot L5→5 slot L6→14 slot L6→6 slot L5→50 slot L4→42 slot L3→32 slot L2→24 slot L1, and the specific connection method is shown in Figure 8

[0057] The first end W2 of W phase winding branch 2 (W2-Z2) enters from the winding 31 slot first layer L1 along the current flow direction, and finally flows out from the 42 slot first layer L1, and the winding connection sequence is: 31 slot L1→39 slot L2→49 slot L3→3 slot L4→13 slot L5→21 slot L6→30 slot L6→22 slot L5→12 slot L4→4 slot L3→48 slot L2→40 slot L1→32 slot L1→40 slot L2→50 slot L3→4 slot L4→14 slot L5→22 slot L6→31 slot L6→23 slot L5→13 slot L4→5 slot L3→49 slot L2→41 slot L1→33 slot L1→41 slot L2→51 slot L3→5 slot L4→15 slot L5→23 slot L6→32 slot L6→24 slot L5→14 slot L4→6 slot L3→50 slot L2→42 slot L1, and the specific connection method is shown in Figure 8

[0058] ​​​The first end W3 of the branch 3 of the W-phase winding, i.e. W3-Z3, enters from the winding 49 slot first layer L1 along the current flow direction, and finally flows out from the 6 slot first layer L1, and the winding connection sequence is: 49 slot L1→3 slot L2→13 slot L3→21 slot L4→31 slot L5→39 slot L6→48 slot L6→40 slot L5→30 slot L4→22 slot L3→12 slot L2→4 slot L1→50 slot L1→4 slot L2→14 slot L3→22 slot L4→32 slot L5→40 slot L6→49 slot L6→41 slot L5→31 slot L4→23 slot L3→13 slot L2→5 slot L1→51 slot L1→5 slot L2→15 slot L4→33 slot L5→41 slot L6→50 slot L6→42 slot L5→32 slot L4→24 slot L3→14 slot L2→6 slot L1, and the specific connection method is as shown in Figure 8 .

[0059] As shown in Figure 7 and Figure 8 The power supply outgoing wires of the U-phase (composed of U1, U2, U3), V-phase (composed of V1, V2, V3), and W-phase (composed of W1, W2, W3) are all distributed on the winding first layer. In this way, when the end portions of the three-phase power supply outgoing wires are connected, they can be arranged in the end portion axial space or in the end portion radial space, which is beneficial for flexible switching according to the installation space. In particular, by using the end portion radial space, the end portion axial height can be significantly reduced.

[0060] The three star points X1-Y1-Z1, X2-Y2-Z2, and X3-Y3-Z3 are also all distributed on the winding first layer. In this way, they can be arranged in the end portion axial space and the end portion radial space according to the installation space.

[0061] Embodiment 2

[0062] A six-pole fifty-four-slot flat copper wire motor three-branch balanced winding, which is short distance (Y=8), angular connection, and parallel branch number (a=3), the winding straight portion, the welding end, and the power supply outgoing wire end in the winding connection structure are exactly the same as those in Embodiment 1, except that the connection mode of the three-phase power supply wires is different, and there is no star point connection. The specific connection mode is as shown in Figure 9 .

[0063] The power supply outgoing wires of the U-phase are composed of U1, U2, U3, Y1, Y2, and Y3, the power supply outgoing wires of the V-phase are composed of V1, V2, V3, Z1, Z2, and Z3, and the power supply outgoing wires of the W-phase are composed of W1, W2, W3, X1, X2, and X3.

Claims

1. A method for using a three-branch balanced winding of a six-pole, fifty-four-slot flat copper wire motor, wherein the three-branch balanced winding of the six-pole, fifty-four-slot flat copper wire motor comprises a three-phase flat copper wire winding symmetrically distributed in the circumferential direction of the iron core slots, wherein the three-phase flat copper wire winding comprises a straight portion (2) of a conductor distributed in the iron core slots, a welding end (1) distributed on one side of an end of the iron core (2), and a power lead end (3) distributed on the other side of the iron core (2). The spans of the welding ends (1) are all equal, and the heights of the lead wires of the welding ends (1) are all equal; the power lead wire end (3) is composed of four U-Pin line types and one I-pin line type, and the first layer of the power lead wire end (3) is composed of an I-Pin line (4) and an equal-span U-pin line (5); the second and third layers are both composed of an equal-span U-Pin line (6); the fourth and fifth layers are both composed of an equal-span U-Pin line (7); and the sixth layer is composed of an equal-span U-Pin line (8); the I-Pin line (4) includes a U-phase power line, a V-phase power line, a W-phase power line, and a star point line when the winding adopts a Y connection, and is all distributed at the end of the first layer of the winding in the core slot; there are no other protruding special-shaped lines and bridge lines; The three-phase flat copper wire winding is a six-layer winding. Each phase winding is composed of three branches in parallel. The connection order of each parallel branch follows: enter from the first layer L1 of the core slot in sequence, pass through the second layer L2, the third layer L3, the fourth layer L4, the fifth layer L5, the sixth layer L6 in the forward direction, and then reverse the sixth layer L6, the fifth layer L5, the fourth layer L4, the third layer L3, the second layer L2, the first layer L1, and then forward to the first layer L1, the second layer L2, The third layer L3, the fourth layer L4, the fifth layer L5, the sixth layer L6, then reverse to the sixth layer L6, the fifth layer L5, the fourth layer L4, the third layer L3, the second layer L2, the first layer L1, then forward to the first layer L1, the second layer L2, the third layer L3, the fourth layer L4, the fifth layer L5, the sixth layer L6, then reverse to the sixth layer L6, the fifth layer L5, the fourth layer L4, the third layer L3, the second layer L2, and finally out from the first layer L1; The three-branch balanced winding of the six-pole, fifty-four-slot flat copper wire motor is characterized by: The U-phase power line, V-phase power line and W-phase power line of the three-phase flat copper wire winding are connected in a Y-type or delta-type manner; The three-phase flat copper wire winding adopts a short pitch of eight, a full pitch of nine or a long pitch of ten. The three-branch balanced winding of the six-pole fifty-four slot flat copper wire motor, the U-phase power line, the V-phase power line, the W-phase power line, and the star point line when the winding adopts Y connection are all distributed at the end of the first layer of the core slot; Follow the steps below: The U-phase winding branch 1, i.e., the head end U1 of U1-X1, enters the first layer L1 of the winding slot 1 along the current flow direction, and finally flows out of the first layer L1 of the 12th slot. The winding connection sequence is: 1st slot L1 → 9th slot L2 → 19th slot L3 → 27th slot L4 → 37th slot L5 → 45th slot L6 → 54th slot L6 → 46th slot L5 → 36th slot L4 → 28th slot L3 → 18th slot L2 → 10th slot L1 → 2nd slot L1 →10 slot L2→20 slot L3→28 slot L4→38 slot L5→46 slot L6→1 slot L6→47 slot L5→37 slot L4→29 slot L3→19 slot L2→11 slot L1→3 slot L1→11 slot L2→21 slot L3→29 slot L4→39 slot L5→47 slot L6→2 slot L6→48 slot L5→38 slot L4→30 slot L3→20 slot L2→12 slot L1; The U-phase winding branch 2, i.e., the head end U2 of U2-X2, enters the winding from the first layer L1 of the 19th slot along the current flow direction, and finally flows out from the first layer L1 of the 30th slot. The winding connection sequence is: 19th slot L1 → 27th slot L2 → 37th slot L3 → 45th slot L4 → 1st slot L5 → 9th slot L6 → 18th slot L6 → 10th slot L5 → 54th slot L4 → 46th slot L3 → 36th slot L2 → 28th slot L1 → 20th slot L1→28 slots L2→38 slots L3→46 slots L4→2 slots L5→10 slots L6→19 slots L6→11 slots L5→1 slot L4→47 slots L3→37 slots L2→29 slots L1→21 slots L1→29 slots L2→39 slots L3→47 slots L4→3 slots L5→11 slots L6→20 slots L6→12 slots L5→2 slots L4→48 slots L3→38 slots L2→30 slots L1; The U-phase winding branch 3, i.e., the head end U1 of U3-X3, enters the first layer L1 of the 37th slot along the current flow direction, and finally flows out of the first layer L1 of the 48th slot. The winding connection sequence is: 37th slot L1 → 45th slot L2 → 1st slot L3 → 9th slot L4 → 19th slot L5 → 27th slot L6 → 36th slot L6 → 28th slot L5 → 18th slot L4 → 10th slot L3 → 54th slot L2 → 46th slot L1 → 38th slot L1→46 slots L2→2 slots L3→10 slots L4→20 slots L5→28 slots L6→37 slots L6→29 slots L5→19 slots L4→11 slots L3→1 slot L2→47 slots L1→39 slots L1→47 slots L2→3 slots L3→11 slots L4→21 slots L5→29 slots L6→38 slots L6→30 slots L5→20 slots L4→12 slots L3→2 slots L2→48 slots L1; The branch 1 of the V-phase winding, i.e., the head end V1 of V1-Y1, enters the first layer L1 of the 7th slot along the current flow direction, and finally flows out of the first layer L1 of the 18th slot. The winding connection sequence is: 7th slot L1 → 15th slot L2 → 25th slot L3 → 33rd slot L4 → 43rd slot L5 → 51st slot L6 → 6th slot L6 → 52nd slot L5 → 42nd slot L4 → 34th slot L3 → 24th slot L2 → 16th slot L1 → 8th slot L1 →16 slot L2→26 slot L3→34 slot L4→44 slot L5→52 slot L6→7 slot L6→53 slot L5→43 slot L4→35 slot L3→25 slot L2→17 slot L1→9 slot L1→17 slot L2→27 slot L3→35 slot L4→45 slot L5→53 slot L6→8 slot L6→54 slot L5→44 slot L4→36 slot L3→26 slot L2→18 slot L1; The branch 2 of the V-phase winding, i.e., the head end V2 of V2-Y2, enters the first layer L1 of the 25th slot along the current flow direction, and finally flows out of the first layer L1 of the 36th slot. The winding connection sequence is: 25th slot L1 → 33rd slot L2 → 43rd slot L3 → 51st slot L4 → 7th slot L5 → 15th slot L6 → 24th slot L6 → 16th slot L5 → 6th slot L4 → 52nd slot L3 → 42nd slot L2 → 34th slot L1 → 26th slot L1→34 slots L2→44 slots L3→52 slots L4→8 slots L5→16 slots L6→25 slots L6→17 slots L5→7 slots L4→53 slots L3→43 slots L2→35 slots L1→27 slots L1→35 slots L2→45 slots L3→53 slots L4→9 slots L5→17 slots L6→26 slots L6→18 slots L5→8 slots L4→54 slots L3→44 slots L2→36 slots L1; The V-phase winding branch 3, i.e., the head end V3 of V3-Y3, enters the first layer L1 of the 43rd slot along the current flow direction, and finally flows out of the first layer L1 of the 54th slot. The winding connection sequence is: 43rd slot L1 → 51st slot L2 → 7th slot L3 → 15th slot L4 → 25th slot L5 → 33rd slot L6 → 42nd slot L6 → 34th slot L5 → 24th slot L4 → 16th slot L3 → 6th slot L2 → 52nd slot L1 → 44th slot L1→52 slots L2→8 slots L3→16 slots L4→26 slots L5→34 slots L6→43 slots L6→35 slots L5→25 slots L4→17 slots L3→7 slots L2→53 slots L1→45 slots L1→53 slots L2→9 slots L3→17 slots L4→27 slots L5→35 slots L6→44 slots L6→36 slots L5→26 slots L4→18 slots L3→8 slots L2→54 slots L1; The W-phase winding branch 1, i.e., the head end W1 of W1-Z1, enters the winding from the first layer L1 of the 13th slot along the current flow direction, and finally flows out from the first layer L1 of the 24th slot. The winding connection sequence is: 13th slot L1 → 21st slot L2 → 31st slot L3 → 39th slot L4 → 49th slot L5 → 3rd slot L6 → 12th slot L6 → 4th slot L5 → 48th slot L4 → 40th slot L3 → 30th slot L2 → 22nd slot L1 → 14th slot L1→22 slots L2→32 slots L3→40 slots L4→50 slots L5→4 slots L6→13 slots L6→5 slots L5→49 slots L4→41 slots L3→31 slots L2→23 slots L1→15 slots L1→23 slots L2→33 slots L3→41 slots L4→51 slots L5→5 slots L6→14 slots L6→6 slots L5→50 slots L4→42 slots L3→32 slots L2→24 slots L1; The W-phase winding branch 2, i.e., the head end W2 of W2-Z2, enters the first layer L1 of the 31st slot along the current flow direction, and finally flows out of the first layer L1 of the 42nd slot. The winding connection sequence is: 31st slot L1 → 39th slot L2 → 49th slot L3 → 3rd slot L4 → 13th slot L5 → 21st slot L6 → 30th slot L6 → 22nd slot L5 → 12th slot L4 → 4th slot L3 → 48th slot L2 → 40th slot L1 → 32nd slot L1→40 slots L2→50 slots L3→4 slots L4→14 slots L5→22 slots L6→31 slots L6→23 slots L5→13 slots L4→5 slots L3→49 slots L2→41 slots L1→33 slots L1→41 slots L2→51 slots L3→5 slots L4→15 slots L5→23 slots L6→32 slots L6→24 slots L5→14 slots L4→6 slots L3→50 slots L2→42 slots L1; The head end W3 of the branch 3 of the W-phase winding, namely W3-Z3, enters the first layer L1 of the 49th slot along the current flow direction and finally flows out of the first layer L1 of the 6th slot. The winding connection sequence is: 49th slot L1 → 3rd slot L2 → 13th slot L3 → 21st slot L4 → 31st slot L5 → 39th slot L6 → 48th slot L6 → 40th slot L5 → 30th slot L4 → 22nd slot L3 → 12th slot L2 → 4th slot L1 → 50th slot L 1→4 slot L2→14 slot L3→22 slot L4→32 slot L5→40 slot L6→49 slot L6→41 slot L5→31 slot L4→23 slot L3→13 slot L2→5 slot L1→51 slot L1→5 slot L2→15 slot L3→23 slot L4→33 slot L5→41 slot L6→50 slot L6→42 slot L5→32 slot L4→24 slot L3→14 slot L2→6 slot L1.

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