Winding motor

Abstract

The embodiment of the utility model discloses a winding motor. The winding motor comprises a stator and a rotor. Wherein the stator comprises a stator groove and a stator winding, winding wires of the stator winding are flat copper wires, and the number of layers of the stator winding is odd or even; the arrangement mode of the stator winding comprises at least one of cross arrangement and row number arrangement, and the stator winding is an integral pitch winding or a short pitch winding or a long pitch winding. The winding motor provided by the embodiment of the utility model can reduce the loss of the motor.

Description

Technical Field

[0001] The utility model embodiment relates to motor technology, in particular to a winding motor. Background Art

[0002] With the advancement and development of science and technology, the emergence of new materials and new processes has brought more possibilities to motor manufacturing and design. Among them, the design of multi-layer winding motors has been continuously promoted to broaden the theory and application practice of motor winding design.

[0003] At present, the existing winding motors usually use traditional bulk round wire windings. Using such windings in transportation vehicles such as cars and electric motorcycles will affect the vehicle's mileage. At the same time, such windings have a low copper filling rate, which will lead to large motor losses. Utility Model Content

[0004] The embodiment of the utility model provides a winding motor to reduce motor loss.

[0005] The utility model embodiment provides a winding motor, comprising: a stator and a rotor;

[0006] Wherein, the stator comprises stator slots and stator windings, the winding wire of the stator windings is flat copper wire, and the number of layers of the stator windings is an odd number of layers or an even number of layers;

[0007] The arrangement of the stator winding includes at least one of a cross arrangement and a row arrangement, and the stator winding is a full-pitch winding, a short-pitch winding, or a long-pitch winding.

[0008] Optionally, when the number of layers of the stator winding is N=4k, the arrangement of the stator winding is cross arrangement and row arrangement, and k is a positive integer.

[0009] Optionally, when the number of layers N of the stator winding is not less than 4k, the stator winding is arranged in a row-number arrangement.

[0010] Optionally, the number of layers of the stator winding is 2k+1 layers and the number of layers of the stator winding is 2k layers, and the arrangement of the first 2k layers is the same.

[0011] Optionally, the winding motor is a three-phase winding motor, and the number of parallel branches of each phase of the winding motor is related to the number of layers of the stator winding.

[0012] Optionally, the number of parallel branches of each phase of the three-phase winding motor is the same as the number of slots per pole per phase q of the winding motor, q=S / 3 / (2*P), where S is the total number of stator slots and P is the number of pole pairs of the winding motor.

[0013] Optionally, when the number of layers of the stator winding is 4, the number of parallel branches of each phase of the winding motor is 1 or 2 or 4.

[0014] Optionally, the number of pole pairs of the winding motor is 6, the number of stator slots is 72, the span of the stator winding is 5, the number of layers of the stator winding is 6, and the number of parallel branches is 2.

[0015] Optionally, when the number of layers of the stator winding is N=4k, there is a cross-arrangement inside the branch, and when N≠4k, there is no cross-arrangement inside the branch, and k is a positive integer.

[0016] Optionally, the number of layers of the stator winding is less than or equal to 12.

[0017] The winding motor provided by the embodiment of the utility model includes: a stator and a rotor; wherein the stator includes stator slots and stator windings, the winding wire of the stator winding is flat copper wire, and the number of layers of the stator winding is an odd number of layers or an even number of layers; the arrangement of the stator winding includes at least one of a cross arrangement and a row arrangement, and the stator winding is a full-pitch winding or a short-pitch winding or a long-pitch winding. The winding motor provided by the embodiment of the utility model has multiple layers of stator windings. When the number of layers of the stator winding is six layers, the corresponding arrangement of the stator winding includes a cross arrangement and a row arrangement, and the winding wire of the stator winding is flat copper wire. Compared with traditional bulk round wires, the winding motor of flat copper wire has a higher copper filling rate, thereby reducing motor losses and improving power density and torque density. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of a stator winding provided by an embodiment of the utility model;

[0019] Figure 2 is a schematic diagram of another stator winding provided by an embodiment of the utility model;

[0020] Figure 3 This is a schematic diagram of another stator winding provided by an embodiment of the utility model. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0022] Figure 1 Schematic diagram of a stator winding provided by an embodiment of the utility model. Figure 1The winding motor includes: a stator and a rotor. The stator includes stator slots and stator windings. The winding wire of the stator winding is a flat copper wire. The number of layers of the stator winding is an odd number of layers or an even number of layers. The arrangement of the stator winding includes at least one of a cross arrangement and a row arrangement. The stator winding is a full-pitch winding, a short-pitch winding, or a long-pitch winding.

[0023] For example, Figure 1 It is shown that the number of layers of the stator winding is af, which is six layers in total. The winding wire of the stator winding is flat copper wire, and the number of layers of the stator winding is multiple layers. Figure 1 The number of layers of the stator winding is six, and the corresponding stator winding arrangements include cross arrangement and row arrangement, and the stator winding is wound with flat copper wire. Compared with traditional bulk round wire, the flat copper wire winding motor has a higher copper filling rate, thereby reducing motor losses and improving power density and torque density.

[0024] It should be noted that Figure 1 The number of layers of the stator winding is only for illustration and can be determined according to actual motor requirements and is not limited here.

[0025] The winding motor provided in this embodiment includes: a stator and a rotor; wherein the stator includes stator slots and stator windings, the winding wire of the stator winding is flat copper wire, and the number of layers of the stator winding is an odd number of layers or an even number of layers; the arrangement of the stator winding includes at least one of a cross arrangement and a row arrangement, and the stator winding is a full-pitch winding or a short-pitch winding or a long-pitch winding. The winding motor provided in this embodiment has multiple layers of stator windings. When the number of layers of the stator winding is six layers, the corresponding arrangement of the stator winding includes a cross arrangement and a row arrangement, and the winding wire of the stator winding is flat copper wire. Compared with traditional bulk round wires, the winding motor with flat copper wire has a higher copper filling rate, thereby reducing motor losses and improving power density and torque density.

[0026] Optionally, the winding motor is a three-phase winding motor, and the number of parallel branches of each phase of the winding motor is related to the number of layers of the stator winding.

[0027] Specifically, the three-phase winding motor includes phase A, phase B and phase C, and the number of layers of the stator winding of the three-phase winding motor is multiple layers. The number of parallel branches of phase A, phase B and phase C of the winding motor is determined according to the number of winding layers, such as the number of parallel branches of phase A, to match the number of winding layers.

[0028] Optionally, when the number of layers of the stator winding is N=4k, the arrangement of the stator winding is a cross arrangement and a row arrangement, and k is a positive integer.

[0029] For example, the number of pole pairs of the winding motor is P=4, the number of slots is S=48, the number of slots per pole per phase is q=2, and N=4. Taking the A-phase winding of the winding motor as an example, when the number of parallel branches is 2, the characters a, b, c, and d are used to represent the first to fourth layers of the winding;

[0030] The slot number and layer number of the first branch of phase A are:

[0031] (7a, 13b), (19a, 25b), (31a, 37b), (43a, 1b);

[0032] (7c, 13d), (19c, 25d), (31c, 37d), (43c, 1d);

[0033] (7d,1c), (43d,37c), (31d,25c), (19d,13c);

[0034] (7b,1a), (43b,37a), (31b,25a), (19b,13a);

[0035] Incoming line 7a, outgoing line 13a, where the bridge point is (1d, 7d).

[0036] Phase A, branch 2;

[0037] (8a, 14b), (20a, 26b), (32a, 38b), (44a, 2b);

[0038] (8c, 14d), (20c, 26d), (32c, 38d), (44c, 2d);

[0039] (8d,2c), (44d,38c), (32d,26c), (20d,14c);

[0040] (8b,2a), (44b,38a), (32b,26a), (20b,14a);

[0041] Incoming line 8a, outgoing line 14a, with bridge point (2d, 8d).

[0042] The phase difference formula can be used to connect phase B and phase C, and the corresponding slot number can be calculated according to the formula.

[0043] The above A phase arrangement rules are:

[0044] The first branch: A phase is wound in the first group of combination and A phase is wound in the first group of combination;

[0045] The second branch: A phase is wound around the second group of combination and A phase is wound around the second group;

[0046] Of course, you can also arrange them according to the following rules:

[0047] The first branch: A phase is wound around the first group of combinations and A phase is wound around the second group;

[0048] The second branch: A phase is wound around the second group of combinations and A phase is wound around the first group;

[0049] According to the above rules, the motor's bridge connection becomes (1d, 8d), (2d, 7d), and the total cross-line distance remains unchanged. This is also one of the winding solutions.

[0050] Another winding method is the cross winding method, which crosses the windings in the A phase branch as follows:

[0051] After crossing, the first branch of phase A:

[0052] (7a, 13b), (19a, 25b), (31c, 37d), (43c, 1d);

[0053] (7c, 13d), (19c, 25d), (31a, 37b), (43a, 1b);

[0054] (7b,1a), (43b,37a), (31d,25c), (19d,13c);

[0055] (7d,1c), (43d,37c), (31b,25a), (19b,13a);

[0056] Among them, the incoming line is 7a, the outgoing line is 13a, and the bridging point is (1b, 7b).

[0057] After crossing, the second branch of phase A:

[0058] (8a, 14b), (20a, 26b), (32c, 38d), (44c, 2d);

[0059] (8c, 14d), (20c, 26d), (32a, 38b), (44a, 2b);

[0060] (8b,2a), (44b,38a), (32d,26c), (20d,14c);

[0061] (8d,2c), (44d,38c), (32b,26a), (20b,14a);

[0062] Among them, the incoming line is 8a, the outgoing line is 14a, and the bridge point is (2b, 8b).

[0063] The phase difference formula can be used to connect phase B and phase C, and the corresponding slot number can be calculated according to the formula.

[0064] Optionally, when the number of layers of the stator winding N≠4k, the stator winding is arranged in a row-number arrangement.

[0065] For example, the number of pole pairs of the winding motor is P=4, the number of slots is S=48, the number of slots per pole per phase is q=2, and N=6. It is assumed that when the current passes through the paper, it represents the positive pole, and when it passes through the paper, it represents the negative pole. Taking the A-phase winding of the winding motor as an example, the distribution of the A-phase winding of the winding motor is shown in Table 1, and the number of slots is (1, 2, negative), (7, 8, positive), (13, 14, negative), (19, 20, positive), (25, 26, negative), (31, 32, positive), (37, 38, negative), (43, 44, positive). According to the coil number calculation rule, the number of coils occupied by the three-phase single-layer winding is: S / (number of phases) / 2. For windings with an even number of layers, the number of coils occupied by each phase is: S / (number of phases)*(N / 2). In a three-phase symmetrical winding, the electrical angles of the A-phase, B-phase, and C-phase windings differ by 120°. The slot numbers occupied by the other phase windings can be calculated as follows: First, calculate the mechanical slot angle occupied by the 120° electrical angle, that is, 120 / P (pole pair number), and then divide it by 360 / S to get the number of slots occupied by the mechanical slot angle occupied by the 120° electrical angle. Taking P=4 and S=48 as an example, there is a difference of 4 slots between the A-phase and the B-phase. According to the above calculation formula, the calculation formula for the slot number occupied by the B-phase winding can be obtained as follows: B-phase slot number = A-phase slot number + 4. When the B-phase slot number plus 4 is greater than 48, the remainder formula Mod(A-phase slot number + 4, 48) is used to take the same direction, and the same method is applicable to calculating the slot number of the C-phase winding. For the A-phase winding, there is an internal addition and subtraction rule. Taking (1, 2, negative) as an example, the slot number it occupies plus the span 6 is (7, 8, positive). According to the same reasoning, the electrical angle difference between (1, 2, negative) and (7, 8, positive) is 180 degrees. Therefore, the number of slots is equal to (180 / P) / (360 / S), which is 6, i.e. the coil span y. When the above winding adopts wave winding, the "row number" connection method can be used. This connection method can clearly understand the connection of the motor winding and directly arrange the motor winding process and wire welding process.

[0066] Table 1

[0067] outside groove 47 48 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 f × × ○ ○ × × ○ ○ e × × ○ ○ × × ○ ○ d × × ○ ○ × × ○ ○ c × × ○ ○ × × ○ ○ b × × ○ ○ × × ○ ○ a × × ○ ○ × × ○ ○ Inside

[0068] Further, refer to Figure 1, A phase forward winding: 1 group (7, 13), (19, 25), (31, 37), (43, 1); 2 groups (8, 14), (20, 26), (32, 38), (44, 2); A phase reverse winding: 1 group (7, 1), (43, 37), (31, 25), (19, 13); 2 groups (8, 2), (44, 38), (32, 26), (20, 14). When the A phase winding N = 2, there are 16 coil groups in total in the A phase. When N is an even number, for example, when N = 4, 6, 8, the number of coils occupied by each phase can be calculated as follows: When N = 4, the number of coils occupied by each phase is: S / (number of phases) × (4 / 2) = 48 / 3 × 2 = 32. When N=6, the number of coils occupied by each phase is: S / (number of phases)×(6 / 2)=48 / 3×3=48. When N=8, the number of coils occupied by each phase is: S / (number of phases)×(8 / 2)=48 / 3×4=64. Therefore, for windings with an even number of layers, the number of coils occupied by each phase is 32, 48 and 64 respectively. When N is an odd number, the number of coils occupied by each phase can be calculated by the following formula: Number of coils occupied by each phase: S / (number of phases)×(N-1 / 2)+S / (2*number of phases). When N=5, the number of coils occupied by each phase is: S / (number of phases)×(4 / 2)=48 / 3×2+48 / 2 / 3=40. When N=7, the number of coils occupied by each phase is: S / (number of phases)×(6 / 2)=48 / 3×3+48 / 2 / 3=56. When N=9, the number of coils occupied by each phase is: S / (number of phases)×(8 / 2)=48 / 3×4+48 / 2 / 3=72. For each set of coils, such as (7,13), its span y1 is 13-7=6; for coils (19,25), its span y2 is 19-13=6. According to the rule, the whole span is equal to the sum of y1 and y2, that is, 12, corresponding to the number of slots occupied by a whole pole pair. When N=6, the number of winding branches is still selected as 2, and the number of winding layers is expanded to the letter f layer; compared with the state of N=4, the first branch of phase A:

[0069] (7a, 13b), (19a, 25b), (31a, 37b), (43a, 1b);

[0070] (7c, 13d), (19c, 25d), (31c, 37d), (43c, 1d);

[0071] (7e, 13f), (19e, 25f), (31e, 37f), (43e, 1f);

[0072] (7f,1e), (43f,37e), (31f,25e), (19f,13e);

[0073] (7d,1c), (43d,37c), (31d,25c), (19d,13c);

[0074] (7b,1a), (43b,37a), (31b,25a), (19b,13a);

[0075] Among them, the incoming line is 7a, the outgoing line is 13a, and the bridging point is (1f, 7f).

[0076] Phase A, branch 2:

[0077] (8a, 14b), (20a, 26b), (32a, 38b), (44a, 2b);

[0078] (8c, 14d), (20c, 26d), (32c, 38d), (44c, 2d);

[0079] (8e, 14f), (20e, 26f), (32e, 38f), (44e, 2f);

[0080] (8f,2e), (44f,38e), (32f,26e), (20f,14e);

[0081] (8d,2c), (44d,38c), (32d,26c), (20d,14c);

[0082] (8b,2a), (44b,38a), (32b,26a), (20b,14a);

[0083] Among them, the incoming line is 8a, the outgoing line is 14a, the bridge point is (2f, 8f), and the A phase has a total of 48 coils.

[0084] For N=6 layers of winding, it is not possible to form a cross winding arrangement like N=4; N=8 can. In fact, when N=4*K, multi-layer windings have a cross arrangement. When the winding is expanded, N=8, 10, 12, etc., the number of winding layers is increased, the letter number is increased, and the arrangement is carried out according to the above N=4 layer mechanism. When N=3, 5, 7, 9 and other odd numbers, the winding arrangement is different. Taking N=5 as an example, the winding arrangement when N is an odd number of layers continues to use the known to push the unknown method to demonstrate the arrangement of the motor winding. For N=5 layers of winding, the first 4 layers are no different from the N=4 layers of winding. Wind the first 4 layers in the forward direction. Wind the A phase in the forward direction: 1 group (7, 13), (19, 25), (31, 37), (43, 1); 2 groups (8, 14), (20, 26), (32, 38), (44, 2); Wind the A phase in the reverse direction: 1 group (7, 1), (43, 37), (31, 25), (19, 13); 2 groups (8, 2), (44, 38), (32, 26), (20, 14); There are only 8 groups of coils in the 5th layer winding, namely: the first case: (7, 13), (19, 25), (31, 37), (43, 1); (8, 14), (20, 26), (32, 38), (44, 2); the second case: (7, 1), (43, 37), (31, 25), (19, 13); (8, 2), (44, 38), (32, 26), (20, 14). In the above cases, any one of the cases can be selected or cross-selected, and then combined into a new arrangement, that is, 4 groups are selected in the first case and 4 groups are selected in the second case. The arrangement of N = 5 layers of winding can be as follows:

[0085] Phase A 1 branch:

[0086] (7a, 13b), (19a, 25b), (31a, 37b), (43a, 1b);

[0087] (7c, 13d), (19c, 25d), (31c, 37d), (43c, 1d);

[0088] (7e, 13e), (19e, 25e), (31e, 37e), (43e, 1e);

[0089] (7d,1c), (43d,37c), (31d,25c), (19d,13c);

[0090] (7b,1a), (43b,37a), (31b,25a), (19b,13a);

[0091] Phase A 2 branch:

[0092] (8a, 14b), (20a, 26b), (32a, 38b), (44a, 2b);

[0093] (8c, 14d), (20c, 26d), (32c, 38d), (44c, 2d);

[0094] (8e,2e), (44e,38e), (32e,26e), (20e,14e);

[0095] (8d,2c), (44d,38c), (32d,26c), (20d,14c);

[0096] (8b,2a), (44b,38a), (32b,26a), (20b,14a);

[0097] Other numbers of layers such as N=7, 9, and 11 are similar to the above winding arrangements and will not be described in detail here.

[0098] In addition, when Q=2, P=4, S=48, and y is not equal to 6, the spans that can be selected are y=5 and y=7. When y=5, A phase positive winding: 1 group (7, 12), (19, 24), (31, 36), (43, 48); 2 groups (8, 13), (20, 25), (32, 37), (44, 1); A phase reverse winding: 1 group (7, 2), (43, 38), (31, 26), (19, 14); 2 groups (6, 1), (42, 37), (30, 25), (18, 13); When y=7, A phase positive winding: 1 group (7, 14), (19, 26), (31, 38), (43, 2); 2 groups of (8, 15), (20, 27), (32, 39), (44, 3); A phase winding: 1 group of (9, 2), (45, 38), (33, 26), (21, 14); 2 groups of (8, 1), (44, 37), (32, 25), (20, 13); B and C phases use the phase difference formula to calculate the relevant slot number arrangement, which will not be repeated here.

[0099] Optionally, when the number of layers of the stator winding is N=4k, there is a cross arrangement inside the branch, and when N≠4k, there is no cross arrangement inside the branch, and k is a positive integer.

[0100] Specifically, when q=3, when P=3 is selected, S=54; its full-span span y=S / (2*P)=9, we first discuss the full-span case, select N=4 layers of windings, and explain its arrangement according to the even-numbered layers of windings. The A-phase winding arrangement diagram can refer to the figure. The number of A-phase positive winding coils is as follows: (1, 10), (19, 28), (37, 46); (2, 11), (20, 29), (38, 47); (3, 12), (21, 30), (39, 48); the number of A-phase reverse winding coils is as follows: (1, 46), (37, 28), (19, 10); (2, 47), (38, 29), (20, 11); (3, 48), (39, 30), (21, 12).

[0101] Phase A, branch 1:

[0102] (1a, 10b), (19a, 28b), (37a, 46b);

[0103] (1c, 10d), (19c, 28d), (37c, 46d);

[0104] (1d, 46c), (37d, 28c), (19d, 10c);

[0105] (1b, 46a), (37b, 28a), (19b, 10a);

[0106] Phase A, branch 2:

[0107] (2a, 11b), (20a, 29b), (38a, 47b);

[0108] (2c, 11d), (20c, 29d), (38c, 47d);

[0109] (2d, 47c), (38d, 29c), (20d, 11c);

[0110] (2b, 47a), (38b, 29a), (20b, 11a);

[0111] Phase A, branch 3:

[0112] (3a, 12b), (21a, 30b), (39a, 48b);

[0113] (3c, 12d), (21c, 30d), (39c, 48d);

[0114] (3d, 48c), (39d, 30c), (21d, 12c);

[0115] (3b, 48a), (39b, 30a), (21b, 12a);

[0116] From the distribution of each branch, there is no cross arrangement within the branch. The arrangement of phases B and C can refer to the phase difference formula, and then distribute them in sequence. When the span y = 10, N = 4 layers of windings are still selected, the number of parallel branches is selected as 3, and the forward and reverse winding arrangements of phase A coil are as follows: forward winding: (1, 11), (19, 29), (37, 47); (2, 12), (20, 30), (38, 48); (3, 13), (21, 31), (39, 49); reverse winding: (2, 46), (38, 28), (20, 10); (3, 47), (39, 29), (21, 11); (4, 48), (40, 30), (22, 12).

[0117] Phase A, branch 1:

[0118] (1a, 11b), (19a, 29b), (37a, 47b);

[0119] (1c, 11d), (19c, 29d), (37c, 47d);

[0120] (2d, 46c), (38d, 28c), (20d, 10c);

[0121] (2b, 46a), (38b, 28a), (20b, 10a);

[0122] Phase A, branch 2:

[0123] (2a, 12b), (20a, 30b), (38a, 48b);

[0124] (2c, 12d), (20c, 30d), (38c, 48d);

[0125] (3d, 47c), (39d, 29c), (21d, 11c);

[0126] (3b, 47a), (39b, 29a), (21b, 11a);

[0127] Phase A, branch 3:

[0128] (3a, 13b), (21a, 31b), (39a, 49b);

[0129] (3c, 13d), (21c, 31d), (39c, 49d);

[0130] (4d, 48c), (40d, 30c), (22d, 12c);

[0131] 4b, 48a), (40b, 30a), (22b, 12a);

[0132] When the span y=8, the A-phase winding is wound forward: (1, 9), (19, 27), (37, 45); (2, 10),

[0133] (20, 28), (38, 46); (3, 11), (21, 29), (39, 47); Rewind: (54, 46), (36, 28), (18, 10); (1, 47), (37, 29), (19, 11); (2, 48), (38, 30), (20, 12);

[0134] Phase A, branch 1:

[0135] (1a, 9b), (19a, 27b), (37a, 45b);

[0136] (1c, 9d), (19c, 27d), (37c, 45d);

[0137] (54d, 46c), (36d, 28c), (18d, 10c);

[0138] (54b, 46a), (36b, 28a), (18b, 10a);

[0139] Phase A, branch 2:

[0140] (2a, 10b), (20a, 28b), (38a, 46b);

[0141] (2c, 10d), (20c, 28d), (38c, 46d);

[0142] (1d, 47c), (37d, 29c), (19d, 11c);

[0143] (1b, 47a), (37b, 29a), (19b, 11a);

[0144] Phase A, branch 3:

[0145] (3a, 11b), (21a, 29b), (39a, 47b);

[0146] (3d, 11c), (21d, 29c), (39d, 47c);

[0147] (2d, 48c), (38d, 30c), (20d, 12c);

[0148] (2b, 48a), (38b, 30a), (20b, 12a);

[0149] The arrangement of B and C phases can refer to the phase difference formula and then be distributed in sequence.

[0150] Optionally, the number of layers of the stator winding is 2k+1 layers and the number of layers of the stator winding is 2k layers, and the arrangement of the first 2k layers is the same.

[0151] Specifically, when the number of layers of the stator winding is 7, the winding arrangement of the first 6 layers is the same as when the number of layers of the stator winding is 6. When the number of layers of the stator winding is 5, the winding arrangement of the first 4 layers is the same as when the number of layers of the stator winding is 4, and the arrangement of the 5th layer can refer to the specific description of the stator winding with 5 layers, which will not be repeated here.

[0152] Optionally, the number of parallel branches of each phase of the three-phase winding motor is the same as the number of slots per pole per phase of the winding motor, q=S / 3 / (2*P), where S is the total number of stator slots and P is the number of pole pairs of the winding motor. The number of parallel branches is the same as the number of slots per pole per phase q, and this setting can optimize the winding arrangement.

[0153] Optionally, when the number of layers of the stator winding is 4, the number of parallel branches of each phase of the winding motor is 1, 2, or 4. Exemplarily, when the number of layers of the stator winding is 4, the number of parallel branches of each phase of the winding motor is 2, so as to facilitate the winding arrangement.

[0154] Optionally, the number of pole pairs of the winding motor is 6, the number of stator slots is 72, the span of the stator winding is 5, the number of layers of the stator winding is 6, and the number of parallel branches is 2.

[0155] Exemplarily, the connection method of the A-phase winding is as follows: A-phase forward winding: (1,6), (13,18), (25,30), (37,42), (49,54), (61,66); (2,7), (14,19), (26,31), (38,43), (50,55), (62,67); A-phase reverse winding: (72,67), (60,55), (48,43), (36,31), (24,19), (12,7); (1,68), (61,56), (49,44), (37,32), (25,20), (13,8). Figure 2 is a schematic diagram of another stator winding provided by an embodiment of the utility model, Figure 3 Schematic diagram of another stator winding provided by the embodiment of the utility model. Figure 2 and Figure 3 , Phase A 1 branch:

[0156] <h2 style=";text-align:left;direction:ltr">(1a,6b),(13a,18b),(25a,30b),(37a,42b),(49a,54b),(61a,66b);<h2 style=";text-align:left;direction:ltr"> <h2 style=";text-align:left;direction:ltr">

[0157] <h2 style=";text-align:left;direction:ltr"> (1c,6d),(13c,18d),(25c,30d),(37c,42d),(49c,54d),(61c,66d);<h2 style=";text-align:left;direction:ltr"> <h2 style=";text-align:left;direction:ltr">

[0158] <h2 style=";text-align:left;direction:ltr"> (1e,6f),(13e,18f),(25e,30f),(37e,42f),(49e,54f),(61e,66f);<h2 style=";text-align:left;direction:ltr"> <h2 style=";text-align:left;direction:ltr">

[0159] <h2 style=";text-align:left;direction:ltr"> (72f,67e),(60f,55e),(48f,43e),(36f,31e),(24f,19e),(12f,7e);<h2 style=";text-align:left;direction:ltr"> <h2 style=";text-align:left;direction:ltr">

[0160] <h2 style=";text-align:left;direction:ltr"> (72d,67c),(60d,55c),(48d,43c),(36d,31c),(24d,19c),(12d,7c);<h2 style=";text-align:left;direction:ltr"> <h2 style=";text-align:left;direction:ltr">

[0161] <h2 style=";text-align:left;direction:ltr"> (72b,67a),(60b,55a),(48b,43a),(36b,31a),(24b,19a),(12b,7a);<h2 style=";text-align:left;direction:ltr"> <h2 style=";text-align:left;direction:ltr">

[0162] <h2 style=";text-align:left;direction:ltr"> A picture:<h2 style=";text-align:left;direction:ltr"> <h2 style=";text-align:left;direction:ltr">

[0163] <h2 style=";text-align:left;direction:ltr"> (2a,7b),(14a,19b),(26a,31b),(38a,43b),(50a,55b),(62a,67b);<h2 style=";text-align:left;direction:ltr"> <h2 style=";text-align:left;direction:ltr">

[0164] <h2 style=";text-align:left;direction:ltr"> (2c,7d),(14c,19d),(26c,31d),(38c,43d),(50c,55d),(62c,67d);<h2 style=";text-align:left;direction:ltr"> <h2 style=";text-align:left;direction:ltr">

[0165] <h2 style=";text-align:left;direction:ltr"> (2e,7f),(14e,19f),(26e,31f),(38e,43f),(50e,55f),(62e,67f);<h2 style=";text-align:left;direction:ltr"> <h2 style=";text-align:left;direction:ltr">

[0166] <h2 style=";text-align:left;direction:ltr"> (1f,68e),(61f,56e),(49f,44e),(37f,32e),(25f,20e),(13f,8e);<h2 style=";text-align:left;direction:ltr"> <h2 style=";text-align:left;direction:ltr">

[0167] <h2 style=";text-align:left;direction:ltr"> (1d,68c),(61d,56c),(49d,44c),(37d,32c),(25d,20c),(13d,8c);<h2 style=";text-align:left;direction:ltr"> <h2 style=";text-align:left;direction:ltr">

[0168] (1b,68a), (61b,56a), (49b,44a), (37b,32a), (25b,20a), (13b,8a).

[0169] It should be noted that the specific values ​​of the above-mentioned number of pole pairs, number of stator slots, span, number of layers, and number of parallel branches are only one case of realizing motor design. Each value is only for schematic explanation and is determined according to the actual motor design requirements and is not limited here.

[0170] Optionally, the number of layers of the stator winding is less than or equal to 12. Specifically, due to the limitation of the flat copper wire process, if the number of layers of the stator winding is greater than 12, it is not conducive to the winding arrangement. Therefore, setting the number of layers of the stator winding to be less than or equal to 12 can realize the application of flat copper wire in motor windings.

[0171] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, combinations and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A winding motor, characterized in that: include: stator and rotor; Wherein, the stator comprises stator slots and stator windings, the winding wire of the stator windings is flat copper wire, and the number of layers of the stator windings is an odd number of layers or an even number of layers; The arrangement of the stator winding includes at least one of a cross arrangement and a row arrangement, and the stator winding is a full-pitch winding, a short-pitch winding, or a long-pitch winding.

2. The winding motor according to claim 1, characterized in that: When the number of layers of the stator winding is N=4k, the arrangement of the stator winding is cross arrangement and row number arrangement, and k is a positive integer.

3. The winding motor according to claim 2, characterized in that: When the number of layers of the stator winding N≠4k, the arrangement of the stator winding is a row-number arrangement.

4. The winding motor according to claim 2, characterized in that: The number of layers of the stator winding is 2k+1 layers and the number of layers of the stator winding is 2k layers, and the arrangement of the first 2k layers is the same.

5. The winding motor according to claim 1, characterized in that: The winding motor is a three-phase winding motor, and the number of parallel branches of each phase of the winding motor is related to the number of layers of the stator winding.

6. The winding motor according to claim 5, characterized in that: The number of parallel branches of each phase of the three-phase winding motor is the same as the number of slots per pole per phase of the winding motor, q=S / 3 / (2*P), where S is the total number of stator slots and P is the number of pole pairs of the winding motor.

7. The winding motor according to claim 5, characterized in that: When the number of layers of the stator winding is 4, the number of parallel branches of each phase of the winding motor is 1, 2 or 4.

8. The winding motor according to claim 7, characterized in that: The number of pole pairs of the winding motor is 6, the number of stator slots is 72, the span of the stator winding is 5, the number of layers of the stator winding is 6, and the number of parallel branches is 2.

9. The winding motor according to claim 7, characterized in that: When the number of layers of the stator winding is N=4k, there is a cross arrangement inside the branch, and when N≠4k, there is no cross arrangement inside the branch, and k is a positive integer.

10. The winding motor according to claim 1, characterized in that: The number of layers of the stator winding is less than or equal to 12.

Images