96-slot 16-pole 8-layer full-pitch flat wire winding stator, motor and driving equipment

Abstract

The utility model provides a 96-slot 16-pole 8-layer full-pitch flat wire winding stator comprising a stator iron core which is provided with a plurality of iron core slots, and the plurality of iron core slots are arranged on the inner surface of the stator iron core and are arranged at intervals along the circumferential direction of the stator iron core at a predetermined slot pitch; and the three-phase stator winding is characterized in that under each magnetic pole, the stator winding of any phase is arranged in two iron core grooves, and the stator winding of any phase comprises eight conductive pieces, so that an eight-layer structure with four parallel branch windings is formed on the stator iron core. According to the 96-slot 16-pole 8-layer full-pitch flat wire winding stator, the motor and the driving equipment, through the optimized winding arrangement and connection mode, the operation efficiency, the thermal performance and the power density of the motor are effectively improved, and the noise, the vibration and the manufacturing cost are reduced at the same time. The reliability and the manufacturing flexibility of the motor are improved through the simplified structure and the enhanced symmetry, platform design and production line compatibility can be conveniently achieved, and meanwhile maintenance and repair are more convenient and faster.

Description

TECHNICAL FIELD

[0001] The utility model relates to winding structure technical field, concretely point to a kind of 96 slot 16 pole 8 layer flat wire winding stator, motor and driving equipment. BACKGROUND

[0002] With the continuous progress of motor technology, flat wire winding arrangement technology has gradually matured, and has been widely applied in motor industry. Flat wire winding becomes an important development direction of motor winding design with its higher filling factor, good heat dissipation performance and higher operating efficiency. However, in the existing 4 branch flat wire winding technology, there are some technical problems and limitations, which limit the further improvement of flat wire motor performance and the universality of application to some extent.

[0003] At present, the main problem of 4 branch flat wire winding is that there are many types of hairpin coils, and the arrangement mode is complex, which leads to the increase of winding end height, and further makes the axial length of motor lengthened, affecting the overall size of motor and the optimization of installation space. At the same time, in order to connect the branches and center point of each phase winding, a large number of bus bars and bus bars are needed, which not only increases the consumption of materials, but also increases the complexity of winding end processing.

[0004] In addition, a large number of special-shaped coils are used in the existing winding design, which significantly increases the difficulty of coil manufacturing, is not conducive to batch production, thereby increasing the production cost and reducing the production efficiency. At the same time, the asymmetry problem of winding branch leads to the difference of back EMF, resistance, inductance and other parameters, which not only affects the performance of motor, but also may cause winding circulating current, increase the additional loss of motor, and may cause local overheating of motor, reduce the reliability and service life of motor.

[0005] Another problem is that the equivalent number of turns of flat wire motor is relatively difficult to adjust, which is due to the limitation of winding layer. This limitation makes flat wire motor face greater challenges in platform design and production line compatibility development for different torque power demand, which is not conducive to the diversification development of motor products, and increases the complexity of motor design and production. SUMMARY

[0006] Therefore, the utility model wants to solve the technical problem of overcoming the problem that the performance and application range of stator winding are limited in the prior art, and provides a kind of 96 slot 16 pole 8 layer flat wire winding stator, motor and driving equipment.

[0007] To solve the above technical problems, the utility model provides a kind of 96 slot 16 pole 8 layer flat wire winding stator, it includes: stator core, the stator core is equipped with multiple core slots, multiple the core slot is all arranged on the inner surface of the stator core, and it is arranged with predetermined slot pitch interval along the stator core circumference;Three-phase stator winding, under each magnetic pole, the stator winding of arbitrary phase is arranged in two the core slot, and the stator winding of arbitrary phase includes eight conductive pieces, to form eight layer structure with four parallel branch winding in the radial direction of the stator core.

[0008] In an embodiment of the utility model, the stator winding of arbitrary phase includes inner layer same cross conductor, outer layer same cross conductor and six intermediate cross layer conductors, in the radial direction of the stator core, the inner layer same cross conductor, six the intermediate cross layer conductor and the outer layer same cross conductor are sequentially arranged from inside to outside.

[0009] In an embodiment of the utility model, the inner layer same cross conductor, the outer layer same cross conductor and arbitrary the intermediate cross layer conductor are one of U-phase winding, V-phase winding and W-phase winding.

[0010] In an embodiment of the utility model, four parallel branches in the stator winding of arbitrary phase are arranged in symmetrical structure.

[0011] In an embodiment of the utility model, four parallel branches in the stator winding of arbitrary phase are evenly distributed in the radial direction of the stator core, to homogenize current density.

[0012] In an embodiment of the utility model, in the radial direction of the stator core, the winding direction of adjacent layers is opposite.

[0013] In an embodiment of the utility model, the conductive piece is flat wire structure.

[0014] In an embodiment of the utility model, the lead of the stator winding of arbitrary phase is arranged in the innermost layer or the outermost layer in the eight layer structure.

[0015] The utility model also provides a kind of motor, which includes one embodiment of the above 96 slot 16 pole 8 layer flat wire winding stator.

[0016] The utility model also provides a kind of driving equipment, which includes the above 96 slot 16 pole 8 layer flat wire winding stator.

[0017] The above technical solution of the utility model has the following advantages compared with prior art:

[0018] The 96-slot 16-pole 8-layer whole pitch flat wire winding stator, motor and driving device improve the operation efficiency, thermal performance and power density of the motor, reduce noise, vibration and manufacturing cost, improve the reliability and manufacturing flexibility of the motor, facilitate platform design and production line compatibility, and make maintenance more convenient. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to make the content of the utility model more easily understood clearly, the following is according to the specific embodiment of the utility model and combines the drawings, and the utility model is further detailed.

[0020] Figure 1 It is the three-dimensional structure schematic diagram of the 96-slot 16-pole 8-layer whole pitch flat wire winding stator in the preferred embodiment of the utility model;

[0021] Figure 2 It is Figure 1 The three-dimensional structure schematic diagram of the stator core in the 96-slot 16-pole 8-layer whole pitch flat wire winding stator shown in the figure;

[0022] Figure 3 It is Figure 1 The three-dimensional structure schematic diagram of the outer layer same cross conductor in the 96-slot 16-pole 8-layer whole pitch flat wire winding stator shown in the figure;

[0023] Figure 4 It is Figure 1 The three-dimensional structure schematic diagram of the intermediate cross layer conductor in the 96-slot 16-pole 8-layer whole pitch flat wire winding stator shown in the figure;

[0024] Figure 5 It is Figure 1 The three-dimensional structure schematic diagram of the inner layer same cross conductor in the 96-slot 16-pole 8-layer whole pitch flat wire winding stator shown in the figure.

[0025] The description of the drawing of the specification is as follows: 100, stator core; 110, core slot; 200, three-phase stator winding; 210, outer layer same cross conductor; 220, intermediate cross layer conductor; 230, inner layer same cross conductor. DETAILED DESCRIPTION

[0026] The utility model is further explained in combination with the drawings and specific embodiments, so that the person skilled in the art can better understand the utility model and can be implemented, but the embodiment is not as the limitation of the utility model. Embodiment one

[0027] Referring to Figure 1 andFigure 2 As shown, the embodiment provides a 96-slot 16-pole 8-layer concentrated flat wire winding stator, which comprises: a stator core 100, a plurality of core slots 110 are provided on the inner surface of the stator core 100, and the plurality of core slots 110 are arranged on the inner surface of the stator core 100 in a predetermined slot pitch interval along the circumferential direction of the stator core 100; a three-phase stator winding 200, under each magnetic pole, the stator winding of any phase is arranged in two core slots 110, and the stator winding of any phase comprises eight conductive pieces to form an eight-layer structure with four parallel branch windings in the radial direction of the stator core 100.

[0028] The 96-slot 16-pole 8-layer concentrated flat wire winding stator, motor and driving device described in the embodiment effectively improve the operating efficiency, thermal performance and power density of the motor by optimizing the winding arrangement and connection mode, while reducing noise, vibration and manufacturing cost. The simplified structure and enhanced symmetry improve the reliability and manufacturing flexibility of the motor, facilitating platform design and production line compatibility, and also making maintenance and repair more convenient. Overall, this scheme has significant advantages in improving motor performance and adapting to different application requirements, providing strong support for the technical progress and cost control of the motor industry.

[0029] In the embodiment, the stator core 100 is the basic structural part of the motor stator, which provides mechanical support and serves as part of the magnetic circuit, with high permeability, so it can effectively guide and enhance the magnetic flux generated by the winding, improving the efficiency and power density of the motor. The core slot 110 is recessed inwardly from the inner surface of the custom core, which is used to place the three-phase stator winding 200. Specifically, the core slot 110 can ensure that the winding is neatly embedded in the stator core 100, thereby maintaining the stability and structural strength of the winding, while also allowing good thermal contact between the winding and the core, which helps to dissipate heat. The three-phase stator winding 200 is the main part of the electronic function, which can generate a magnetic field through current, interact with the magnetic field of the rotor to produce torque, and drive the motor rotor to rotate. In the embodiment, the winding of each phase is arranged in two core slots 110, which can help to balance the current distribution and electromagnetic force. The conductive piece is used to generate magnetic flux through current, and further, the eight conductive pieces in the embodiment form four parallel branch windings, which can improve the current capacity and operating efficiency of the motor, while reducing the resistance and heat loss of the winding.

[0030] Specifically, based on the eight-layer structure formed by the windings in the radial direction of the stator core 100, on the one hand, it helps to improve the filling factor of the windings, optimize the magnetic flux distribution, reduce harmonics, and improve the performance of the motor. On the other hand, the design of the four parallel branch windings can provide a more stable current path and reduce electromagnetic interference between windings. Thus, through the synergistic effect between the mechanisms, the stator can operate in a high-efficiency, stable and reliable environment, while adapting to different working conditions and load requirements. Specifically, to achieve optimal homogenization, the four parallel branches in the stator winding of any phase are evenly distributed in the radial direction of the stator core 100.

[0031] In this embodiment, the four parallel branches in the stator winding of any phase are all arranged in a symmetrical structure. Thus, the symmetrical structure ensures that the resistance and inductance of each parallel branch are the same, so that the current is evenly distributed in each branch, reducing current imbalance. At the same time, the symmetrical structure helps to make the heat distribution between the windings more uniform, reducing the risk of local overheating and prolonging the service life of the motor.

[0032] In different embodiments, the winding direction of adjacent layers in the radial direction of the stator core 100 can be opposite. Based on this, since the winding direction of adjacent layers is opposite, the magnetic fields generated by them will partially cancel out when interacting, thereby reducing noise and vibration caused by magnetic field pulsation. At the same time, alternating windings help to improve the magnetic flux distribution in the motor air gap, making it more uniform, which helps to improve the efficiency and power factor of the motor.

[0033] Referring to Figures 3 to 5 As shown, the stator winding of any phase in this embodiment includes an inner layer common conductor 230, an outer layer common conductor 210, and six intermediate layer conductors 220. In the radial direction of the stator core 100, the inner layer common conductor 230, the six intermediate layer conductors 220, and the outer layer common conductor 210 are arranged from inside to outside. In addition, in different embodiments, the inner layer common conductor 230, the outer layer common conductor 210, and any intermediate layer conductor 220 can be one of the U-phase winding, the V-phase winding, and the W-phase winding, and the utility model does not make specific limitations on this. Specifically, the conductive parts are all flat wire structures. Specifically, the flat wire structure can be arranged more tightly in the core slot 110, thereby improving the slot fill rate, allowing more copper material to be accommodated in the same volume, improving the power density of the motor. In addition, the surface area of the flat wire is larger than that of the round wire with the same cross-sectional area, which helps to improve the heat dissipation efficiency, reduce the temperature rise of the winding, and prolong the service life of the motor.

[0034] In this embodiment, the lead-out line of the stator winding of any phase is arranged in the innermost layer or the outermost layer of the eight-layer structure. The slot numbers passed through by the series connection of the parallel branches located inside are:

[0035] 31(7)→ 37(6)→ 43(5)→ 49(4)→ 55(3)→ 61(2)→ 67(1)→ 74(1)→

[0036] 68(2)→ 62(3)→ 56(4)→ 50(5)→ 44(6)→ 38(7)→ 32(8)→ 37(8)→

[0037] 43(7)→ 49(6)→ 55(5)→ 61(4)→ 67(3)→ 73(2)→ 79(1)→ 86(1)→

[0038] 80(2)→ 74(3)→ 68(4)→ 62(5)→ 56(6)→ 50(7)→ 44(8)→ 49(8)→

[0039] 55(7)→ 61(6)→ 67(5)→ 73(4)→ 79(3)→ 85(2)→ 91(1)→ 2(1)→

[0040] 92(2)→ 86(3)→ 80(4)→ 74(5)→ 68(6)→ 62(7)→ 56(8)→ 61(8)→

[0041] 67(7)→ 73(6)→ 79(5)→ 85(4)→ 91(3)→ 1(2)→ 7(1)→ 14(1)→

[0042] 8(2)→ 2(3)→ 92(4)→ 86(5)→ 80(6)→ 74(7)→ 68(8)→ 73(8);

[0043] The parallel branch of the secondary inner layer is connected in series through the slot number:

[0044] 32(7)→ 38(6)→ 44(5)→ 50(4)→ 56(3)→ 62(2)→ 68(1)→ 61(1)→

[0045] 55(2)→ 49(3)→ 43(4)→ 37(5)→ 31(6)→ 25(7)→ 19(8)→ 14(8)→

[0046] 20(7)→ 26(6)→ 32(5)→ 38(4)→ 44(3)→ 50(2)→ 56(1)→ 49(1)→

[0047] 43(2)→ 37(3)→ 31(4)→ 25(5)→ 19(6)→ 13(7)→ 7(8)→ 2(8)→

[0048] 8(7)→ 14(6)→ 20(5)→ 26(4)→ 32(3)→ 38(2)→ 44(1)→ 37(1)→

[0049] 31(2)→ 25(3)→ 19(4)→ 13(5)→ 7(6)→ 1(7)→ 91(8)→ 86(8)→

[0050] 92(7)→ 2(6)→ 8(5)→ 14(4)→ 20(3)→ 26(2)→ 32(1)→ 25(1)→

[0051] 19(2)→ 13(3)→ 7(4)→ 1(5)→ 91(6)→ 85(7)→ 79(8)→ 74(8);

[0052] The groove numbers through which the parallel branches of the secondary outer layer are connected in series are:

[0053] 79(7)→ 85(6)→ 91(5)→ 1(4)→ 7(3)→ 13(2)→ 19(1)→ 26(1)→

[0054] 20(2)→ 14(3)→ 8(4)→ 2(5)→ 92(6)→ 86(7)→ 80(8)→ 85(8)→

[0055] 91(7)→ 1(6)→ 7(5)→ 13(4)→ 19(3)→ 25(2)→ 31(1)→ 38(1)→

[0056] 32(2)→ 26(3)→ 20(4)→ 14(5)→ 8(6)→ 2(7)→ 92(8)→ 1(8)→

[0057] 7(7)→ 13(6)→ 19(5)→ 25(4)→ 31(3)→ 37(2)→ 43(1)→ 50(1)→

[0058] 44(2)→ 38(3)→ 32(4)→ 26(5)→ 20(6)→ 14(7)→ 8(8)→ 13(8)→

[0059] 19(7)→ 25(6)→ 31(5)→ 37(4)→ 43(3)→ 49(2)→ 55(1)→ 62(1)→

[0060] 56(2)→ 50(3)→ 44(4)→ 38(5)→ 32(6)→ 26(7)→ 20(8)→ 25(8);

[0061] The groove numbers through which the parallel branches of the outer layer are connected in series are:

[0062] 80(7)→ 86(6)→ 92(5)→ 2(4)→ 8(3)→ 14(2)→ 20(1)→ 13(1)→

[0063] 7(2)→1(3)→91(4)→85(5)→79(6)→73(7)→67(8)→62(8)→

[0064] 68(7)→74(6)→80(5)→86(4)→92(3)→2(2)→8(1)→1(1)→

[0065] 91(2)→85(3)→79(4)→73(5)→67(6)→61(7)→55(8)→50(8)→

[0066] 56(7)→62(6)→68(5)→74(4)→80(3)→86(2)→92(1)→85(1)→

[0067] 79(2)→73(3)→67(4)→615)→55(6)→49(7)→43(8)→38(8)→

[0068] 44(7)→50(6)→56(5)→62(4)→68(3)→74(2)→80(1)→73(1)→

[0069] 67(2)→61(3)→55(4)→49(5)→43(6)→37(7)→31(8)→26(8);

[0070] Through the above connection mode, the number of available linear types is only 5, thereby greatly reducing the process difficulty, making the cost more controllable, and on this basis, the number of layers can be expanded, and ideas are provided for the research and development of subsequent new structures. Embodiment Two

[0071] The embodiment provides a motor which comprises the 96-slot 16-pole 8-layer full-pitch flat wire winding stator described in embodiment one. Embodiment Three

[0072] The embodiment provides a driving device which comprises the 96-slot 16-pole 8-layer full-pitch flat wire winding stator described in embodiment one.

[0073] In summary, the 96-slot 16-pole 8-layer full-pitch flat wire winding stator, the motor and the driving device provided by the utility model have the advantages that through the optimized winding arrangement and connection mode, the operation efficiency, the thermal performance and the power density of the motor are effectively improved, meanwhile, the noise, the vibration and the manufacturing cost are reduced. The simplified structure and the enhanced symmetry improve the reliability and the manufacturing flexibility of the motor, facilitate the realization of platform design and production line compatibility, and also make the maintenance and repair more convenient. Overall, the scheme has remarkable advantages in improving the motor performance and adapting to different application requirements, and provides powerful support for the technical progress and cost control of the motor industry.

[0074] Obviously, the above embodiments are merely exemplary and not intended to limit the embodiments. Based on the above description, one of ordinary skill in the art can make other different forms of changes or modifications. Here, it is not necessary and impossible to enumerate all the embodiments. The obvious changes or modifications derived therefrom are still within the protection scope of the present application.

Claims

1. A 96-slot 16-pole 8-layer fractional-slot distributed-winding stator, characterized by: The application relates to a 96-slot 16-pole 8-layer full-pitch flat conductor winding stator. The stator core is provided with a plurality of core slots, the core slots are arranged on the inner surface of the stator core, and the core slots are arranged at a predetermined slot pitch interval in the circumferential direction of the stator core. The stator winding of any phase is arranged in two core slots under each magnetic pole, and the stator winding of any phase comprises eight conductive pieces to form an eight-layer structure with four parallel branch windings in the radial direction of the stator core.

2. The 96-slot 16-pole 8-layer fractional-slot flat wire winding stator of claim 1, wherein: The stator winding of any phase comprises an inner-layer same-crossing conductor, an outer-layer same-crossing conductor and six intermediate-crossing conductors, and the inner-layer same-crossing conductor, the six intermediate-crossing conductors and the outer-layer same-crossing conductor are sequentially arranged from inside to outside in the radial direction of the stator core.

3. The 96-slot 16-pole 8-layer fractional-slot flat wire winding stator of claim 2, wherein: The inner-layer same-crossing conductor, the outer-layer same-crossing conductor and any intermediate-crossing conductor are one of U-phase winding, V-phase winding and W-phase winding.

4. The 96-slot 16-pole 8-layer fractional-slot flat wire winding stator of claim 1, wherein: The four parallel branches of the stator winding of any phase are arranged in a symmetrical structure.

5. The 96-slot 16-pole 8-pitch concentrated flat wire winding stator of claim 1, wherein: The four parallel branches of the stator winding of any phase are uniformly distributed in the radial direction of the stator core to homogenize the current density.

6. The 96-slot 16-pole 8-pitch concentrated flat wire winding stator of claim 1, wherein: The winding directions of adjacent layers are opposite in the radial direction of the stator core.

7. The 96-slot 16-pole 8-pitch concentrated flat wire stator winding of claim 1, wherein: The conductive pieces are flat wire structures.

8. The 96-slot 16-pole 8-pitch concentrated flat wire winding stator of claim 1, wherein: The lead-out wire of the stator winding of any phase is arranged in the innermost layer or the outermost layer of the eight-layer structure.

9. An electric machine characterized by: The application further discloses a 96-slot 16-pole 8-layer full-pitch flat conductor winding stator.

10. A drive apparatus characterized by comprising: The application further discloses a 96-slot 16-pole 8-layer full-pitch flat conductor winding stator.

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