CN210041604U - 24 groove 10 utmost point axial magnetic current motor and electric vehicle - Google Patents
24 groove 10 utmost point axial magnetic current motor and electric vehicle Download PDFInfo
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- CN210041604U CN210041604U CN201920635620.0U CN201920635620U CN210041604U CN 210041604 U CN210041604 U CN 210041604U CN 201920635620 U CN201920635620 U CN 201920635620U CN 210041604 U CN210041604 U CN 210041604U
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Abstract
The utility model relates to a 24 groove 10 utmost point axial magnetic flux motor and electric vehicle. This 24 groove 10 utmost point axial flux motor includes the rotor, the axial both ends symmetrical arrangement of rotor has two stators, the rotor includes the disk rotor support, 5 antipodal magnet steel are inlayed respectively to rotor support's both sides, 24 winding grooves have been followed the circumference equipartition on the stator, 24 winding inslots are around being equipped with and are formed the coil winding by A, B, C three-phase line coiling, the coil winding adopts centralized winding. This 24 groove 10 utmost point axial magnetic flux motor adopts fractional slot, centralized winding, and fractional slot winding can obtain more number of poles with less slot number, makes mutual interference less between the coil winding, has strengthened the fault-tolerant ability of motor, and the tip overhang of coil winding is shorter, can reduce copper consumption and copper line quantity, improves the utilization ratio of copper product, shortens motor size, alleviates motor weight and improves motor efficiency and power density, reduces manufacturing cost.
Description
Technical Field
The utility model relates to a 24 groove 10 utmost point axial magnetic flux motor and electric vehicle.
Background
Energy conservation, emission reduction and environmental protection are the common focus of attention in the world at present and are the necessary routes for human society to enter virtuous circle and sustainable development. The electric automobile is more and more widely applied due to the advantages of low noise, zero pollution, low running cost and the like.
At present, most of permanent magnet brushless motors for driving motor vehicles adopt permanent magnet motors with radial magnetic flux structures, the effective specific power density is more than or equal to 4Kw/kg, the effective specific torque is more than or equal to 19N.m/kg according to the requirements of the development planning of thirteen five countries on the drive motors of pure electric vehicles, the motors with the radial magnetic flux structures in the prior art are large in size, the layout forms of integral slots and random-embedded windings are mostly adopted, the end overhang parts of the random-embedded windings are long, the overhang end parts are non-power-applying parts, the utilization rate of copper materials is low, the effective specific power is 3.0-3.2 Kw/kg, the effective specific torque is 16-17 N.m/kg, and the requirements of light weight, small size and high power density of the motors for the electric vehicles are difficult to meet. In addition, the permanent magnet motor rotor of the radial magnetic flux structure is embedded with magnetic steels with the polarity number corresponding to the number of the poles of the stator, when the number of the poles of the magnetic steels of the rotor is equal to or close to the number of the poles of the stator, a large cogging torque can be generated, and the cogging torque is one of sources of electromagnetic vibration and electromagnetic noise. This is particularly true at low speeds. In the integer slot winding, the tooth wave potential due to the presence of the slots has a harmonic order of 2mqk ± 1 (k =1,2,3, … is the tooth harmonic order), m is the phase number, q: pole group number,) 2mqk ± 1 are all equal odd numbers, so all order tooth harmonics are present, and the fundamental tooth harmonic 2mqk ± 1 is the strongest.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a 24-slot 10-pole axial magnetic motor which has small volume, simple structure, high effective specific power density and small tooth socket torque; an object of the utility model is also to provide an electric vehicle.
In order to achieve the technical purpose, the technical scheme adopted by the 24-slot 10-pole axial flux motor of the utility model is as follows: this 24 groove 10 utmost point axial flux motor includes the rotor, the axial both ends symmetrical arrangement of rotor has two stators, the rotor includes the disk rotor support, 5 antipodal magnet steel are inlayed respectively to rotor support's both sides, 24 winding grooves have been followed the circumference equipartition on the stator, 24 winding inslots are around being equipped with and are formed the coil winding by A, B, C three-phase line coiling, the coil winding adopts centralized winding.
Furthermore, the A, B, C three phases of the coil winding are respectively composed of 8 coils and 10 polar phases, the 2 nd coil and the 3 rd coil, and the 6 th coil and the 7 th coil of each phase are connected end to end, two winding slots are respectively arranged between the 2 nd coil and the 3 rd coil, and between the 6 th coil and the 7 th coil of each phase, and the connection forms of the rest coils are connected end to end or tail to end.
Furthermore, the coil winding is a double-layer winding structure formed by winding flat copper wires, and each layer of 12 coils is arranged in a corresponding winding groove according to a certain phase.
Further, 24 groove 10 utmost point axial flux motor still includes the frame and sets up the end cover at the frame both ends, be equipped with the recess along circumference interval on the stator, install fixed layering in the recess, the fixed layering of installing on end cover and the stator passes through bolt fixed connection.
Furthermore, the magnetic steel is of a split fan-shaped structure, and the magnetic steel is formed by splicing a plurality of pieces of sub magnetic steel of fan-shaped structures with the same polarity.
The utility model discloses 24 utmost point axial magnetic flux motors in groove 10 have following beneficial effect: the 24-slot 10-pole axial flux motor adopts fractional slots and a centralized winding, the fractional slot winding can obtain more poles with less slots, so that mutual interference among coil windings is less, the fault-tolerant capability of the motor is enhanced, the end overhang part of the coil winding is shorter, copper consumption and copper wire consumption can be reduced, the utilization rate of copper materials is improved, and a disk-type support is adopted for a rotor, so that the volume size of the motor can be greatly reduced, the weight of the motor is reduced, the efficiency and the power density of the motor are improved, and the manufacturing cost is reduced; the concentrated winding has more cogging cycles, a plurality of stator cogging slots and the permanent magnet of the rotor magnetic steel act at the same time, phase difference does not exist for all the stator cogging slots, cogging torque of the motor can be effectively reduced, and the overall performance of the motor is good.
The utility model discloses the technical scheme that electric vehicle adopted as follows: the 24-slot 10-pole axial flux motor comprises a rotor, two stators are symmetrically arranged at two axial ends of the rotor, the rotor comprises a disc-type rotor support, 5 pairs of magnetic steel are respectively embedded in two faces of the rotor support, 24 winding slots are uniformly distributed in the stator along the circumferential direction, coil windings formed by winding A, B, C three-phase lines are wound in the 24 winding slots, and the coil windings are centralized windings.
Furthermore, the A, B, C three phases of the coil winding are respectively composed of 8 coils and 10 polar phases, the 2 nd coil and the 3 rd coil, and the 6 th coil and the 7 th coil of each phase are connected end to end, two winding slots are respectively arranged between the 2 nd coil and the 3 rd coil, and between the 6 th coil and the 7 th coil of each phase, and the connection forms of the rest coils are connected end to end or tail to end.
Furthermore, the coil winding is a double-layer winding structure formed by winding flat copper wires, and each layer of 12 coils is arranged in a corresponding winding groove according to a certain phase.
Further, 24 groove 10 utmost point axial flux motor still includes the frame and sets up the end cover at the frame both ends, be equipped with the recess along circumference interval on the stator, install fixed layering in the recess, the fixed layering of installing on end cover and the stator passes through bolt fixed connection.
Furthermore, the magnetic steel is of a split fan-shaped structure, and the magnetic steel is formed by splicing a plurality of pieces of sub magnetic steel of fan-shaped structures with the same polarity.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural view of an embodiment 1 of a 24-slot 10-pole axial flux motor according to the present invention;
FIG. 2 is a schematic structural view of a stator of the 24-slot 10-pole axial flux machine shown in FIG. 1;
FIG. 3 is a schematic structural view of a rotor of the 24-slot 10-pole axial flux machine shown in FIG. 1;
FIG. 4 is a schematic structural view of an end cap of the 24-slot 10-pole axial flux machine of FIG. 1;
FIG. 5 is a schematic structural diagram of a machine base of the 24-slot 10-pole axial flux motor shown in FIG. 1;
FIG. 6 is a wiring diagram of the coil windings of the 24 slot 10 pole axial flux machine of FIG. 1;
FIG. 7 is a wiring diagram of the phase A coil winding of FIG. 6;
FIG. 8 is a wiring diagram of the phase B coil winding of FIG. 6;
fig. 9 is a wiring diagram of the phase C coil winding of fig. 6;
fig. 10 is a wiring diagram of the coil windings of the 24 slot 10 pole axial flux machine of fig. 1.
Description of reference numerals: 1. a machine base; 2. an end cap; 3. a stator; 4. a groove; 5. a winding slot; 6. a rotor; 7. magnetic steel; 8. a rotor support; 9. a stator slot; 10. a lead-out port; 11. the frame fixed orifices.
Detailed Description
The present invention is described in detail below with reference to specific embodiments and drawings, and it should be noted that the embodiments and features of the embodiments of the present invention can be combined with each other without conflict, and the present invention is not limited thereto.
The utility model discloses 24 embodiment 1 of 10 extremely axial flux motors in groove, as shown in fig. 1 to 10 (distinguish A, B, C three-phases according to the colour difference in fig. 6, X, Y, Z represents A, B, C three-phase lead-out wire respectively), this 24 10 extremely axial flux motors in groove include rotor 6, rotor 6's axial both ends symmetrical arrangement has two stators 3, and rotor 6 includes disk-type spider 8, and spider 8's both sides are inlayed respectively and are had 5 antipodal magnet steel 7, and there are 24 winding grooves 5 along the circumference equipartition on the stator 3, and 24 winding grooves 5 are interior around being equipped with the coil winding that is formed by A, B, C three-phase line coiling, and coil winding adopts centralized winding.
In this embodiment, the coil winding is formed with the flat type copper wire coiling, can integrate processing, saves process time, reduction in production cost. The span of the coil winding is 1-3, the connection arrangement of three phase lines of the coil winding A, B, C is ABABCCACBCBCABCACABCBC, the connection mode of the 2 nd coil and the 3 rd coil, the 6 th coil and the 7 th coil of each phase is head-to-tail connection, the 2 nd coil, the 3 rd coil, the 6 th coil and the 7 th coil of each phase are separated by two winding slots 5, the connection mode of the other coils is head-to-head connection or tail-to-tail connection, the winding mode enables each phase to form 10 pole phases including 8 salient poles and 2 consequent poles, and the consequent poles are induced by changing the polarity of the adjacent same-phase winding through changing the connection mode.
In this embodiment, the coil winding is a double-layer winding structure formed by winding flat copper wires, and each layer of 12 coils is arranged in the corresponding winding slot 5 according to a certain phase, so that the duty ratio of the copper material is improved, the space of 3 slots of the stator is saved, the size of the motor is reduced to a greater extent, and the effective specific power density of the permanent magnet motor is improved.
In this embodiment, this 24 groove 10 utmost point axial flux motor still includes frame 1 and the end cover 2 of setting at frame 1 both ends, be equipped with multiunit frame fixed orifices 11 on the outer peripheral face of frame 1, be equipped with the bolt hole that corresponds in the base fixed orifices on end cover 2, still be equipped with the stator groove 9 that is used for placing stator 3 on the end cover 2, be equipped with the drawing-out mouth 10 of A, B, C three-phase line of coil winding on the outer peripheral face of frame 1, be equipped with recess 4 along the circumference interval on the stator 3, the fixed layering of installation passes through bolt fixed connection on end cover 2 and the stator 3, be convenient for the heat dissipation of stator 3 and coil winding.
In the present embodiment, the stator 3 is formed by punching, winding, and welding a silicon steel sheet. The rotor bracket 8 is processed by carbon steel, a shaft hole is formed in the center of the rotor bracket 8, a rotating shaft is installed in the shaft hole, and bearings are installed at two ends of the rotating shaft; the magnetic steel 7 is of a split fan-shaped structure, the magnetic steel 7 is formed by splicing a plurality of sub magnetic steels of fan-shaped ring structures with the same polarity, and the magnetic steel 7 can reduce eddy current loss of the disc motor during working and improve the working efficiency of the disc motor by adopting the structure.
When the 24-slot 10-pole axial flux motor is installed, the sub-magnetic steels of the fan-shaped ring structures are arranged and fixed on the rotor support 8 according to N, S, N, S … …, the polarities of the magnetic steels 7 corresponding to the two sides of the rotor support 8 are the same, and the assembled rotor 6 is installed in the base; the stator 3 is placed in a stator groove 9 on the end cover 2, the two stators are respectively fixed on the end cover 2 by using a pressing strip and bolts, finally, the bolts penetrate through the machine base fixing hole 11 and the bolt holes on the end cover 2, the two end covers 2 fixed with the stators 3 are fixed at two ends of the machine base 1, and air gaps with the same size are reserved between the rotor 6 and the two stators.
According to the design characteristics of the fractional slot: q = Z/2pm = N/d, N, b is an integer, N/d is irreducible fractional q =24/2x3x5, N/d =4/5, it is known that the coil winding of the 24-slot 10-pole axial flux motor adopts fractional slots and centralized windings, the structure is simple, the fractional slot winding can obtain more poles with less slots, the mutual interference among the coil windings is less, and the fault-tolerant capability of the motor is enhanced; the end overhang part of the coil winding is shorter, so that the copper consumption and the copper wire consumption can be reduced, the utilization rate of copper materials is improved, the volume size of the motor is shortened, the weight of the motor is reduced, the efficiency and the power density of the motor are improved, and the manufacturing cost is reduced. The concentrated winding has more cogging cycles, a plurality of stator cogging slots and the permanent magnet of the magnetic steel 7 on the rotor 6 act at the same time, phase difference does not exist for all the stator cogging slots, and cogging torque of the motor can be effectively reduced.
The utility model discloses 24 embodiment 2 of 10 utmost points axial magnetic flux motors in groove, with embodiment 1's difference lie in, the magnet steel can be the fan-shaped structure of monoblock.
The utility model discloses 24 embodiment 3 of groove 10 utmost point axial flux motor, with embodiment 1's difference lies in, the coil winding also can adopt the enameled wire coiling.
The utility model discloses electric vehicle's embodiment, this electric vehicle include 24 grooves 10 utmost point axial flux motors, and these 24 grooves 10 utmost point axial flux motors and the aforesaid the utility model discloses the structure of any embodiment of 24 grooves 10 utmost point axial flux motors is the same, and the repeated explanation is no longer.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. A 24-slot 10-pole axial flux electric machine comprising a rotor, characterized in that: the two stators are symmetrically arranged at two axial ends of the rotor, the rotor comprises a disc-type rotor support, 5 pairs of magnetic steel are respectively embedded on two surfaces of the rotor support, 24 winding grooves are uniformly distributed on the stator along the circumferential direction, coil windings formed by winding A, B, C three-phase lines are wound in the 24 winding grooves, and the coil windings are centralized windings.
2. A 24-slot 10-pole axial flux machine according to claim 1, wherein: the A, B, C three phases of the coil winding are respectively composed of 8 coils and 10 polar phases, the wiring modes of the 2 nd coil and the 3 rd coil, and the 6 th coil and the 7 th coil of each phase are all connected end to end, two winding grooves are arranged between the 2 nd coil and the 3 rd coil, and between the 6 th coil and the 7 th coil of each phase at intervals, and the wiring modes of the rest coils are connected end to end or tail to end.
3. A 24-slot 10-pole axial flux machine according to claim 2, wherein: the coil winding is a double-layer winding structure formed by winding flat copper wires, and each layer of 12 coils is arranged in a corresponding winding groove according to a certain phase.
4. A 24-slot 10-pole axial flux machine according to claim 1,2 or 3, wherein: the 24-slot 10-pole axial flux motor further comprises a base and end covers arranged at two ends of the base, grooves are formed in the stator at intervals along the circumferential direction, fixing pressing strips are installed in the grooves, and the end covers are fixedly connected with the fixing pressing strips installed on the stator through bolts.
5. A 24-slot 10-pole axial flux machine according to claim 1,2 or 3, wherein: the magnetic steel is of a split fan-shaped structure, and the magnetic steel is formed by splicing a plurality of sub magnetic steels of fan-shaped structures with the same polarity.
6. An electric vehicle comprising a 24-slot 10-pole axial-flux electric machine, the 24-slot 10-pole axial-flux electric machine comprising a rotor, characterized in that: the two stators are symmetrically arranged at two axial ends of the rotor, the rotor comprises a disc-type rotor support, 5 pairs of magnetic steel are respectively embedded on two surfaces of the rotor support, 24 winding grooves are uniformly distributed on the stator along the circumferential direction, coil windings formed by winding A, B, C three-phase lines are wound in the 24 winding grooves, and the coil windings are centralized windings.
7. The electric vehicle according to claim 6, characterized in that: the A, B, C three phases of the coil winding are respectively composed of 8 coils and 10 polar phases, the wiring modes of the 2 nd coil and the 3 rd coil, and the 6 th coil and the 7 th coil of each phase are all connected end to end, two winding grooves are arranged between the 2 nd coil and the 3 rd coil, and between the 6 th coil and the 7 th coil of each phase at intervals, and the wiring modes of the rest coils are connected end to end or tail to end.
8. The electric vehicle according to claim 7, characterized in that: the coil winding is a double-layer winding structure formed by winding flat copper wires, and each layer of 12 coils is arranged in a corresponding winding groove according to a certain phase.
9. The electric vehicle according to claim 6, 7 or 8, characterized in that: the 24-slot 10-pole axial flux motor further comprises a base and end covers arranged at two ends of the base, grooves are formed in the stator at intervals along the circumferential direction, fixing pressing strips are installed in the grooves, and the end covers are fixedly connected with the fixing pressing strips installed on the stator through bolts.
10. The electric vehicle according to claim 6, 7 or 8, characterized in that: the magnetic steel is of a split fan-shaped structure, and the magnetic steel is formed by splicing a plurality of sub magnetic steels of fan-shaped structures with the same polarity.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920635620.0U CN210041604U (en) | 2019-05-06 | 2019-05-06 | 24 groove 10 utmost point axial magnetic current motor and electric vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920635620.0U CN210041604U (en) | 2019-05-06 | 2019-05-06 | 24 groove 10 utmost point axial magnetic current motor and electric vehicle |
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| CN210041604U true CN210041604U (en) | 2020-02-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110391723A (en) * | 2019-05-06 | 2019-10-29 | 三门峡速达交通节能科技股份有限公司 | 24 slot, 10 pole axial-flux electric machine and electric vehicle |
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2019
- 2019-05-06 CN CN201920635620.0U patent/CN210041604U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110391723A (en) * | 2019-05-06 | 2019-10-29 | 三门峡速达交通节能科技股份有限公司 | 24 slot, 10 pole axial-flux electric machine and electric vehicle |
| CN110391723B (en) * | 2019-05-06 | 2024-03-19 | 三门峡速达交通节能科技股份有限公司 | 24-slot 10-pole axial flux motor and electric vehicle |
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