CN115118029A - Hub motor capable of restraining radial electromagnetic force and torque pulsation - Google Patents
Hub motor capable of restraining radial electromagnetic force and torque pulsation Download PDFInfo
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- CN115118029A CN115118029A CN202210880484.8A CN202210880484A CN115118029A CN 115118029 A CN115118029 A CN 115118029A CN 202210880484 A CN202210880484 A CN 202210880484A CN 115118029 A CN115118029 A CN 115118029A
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- inner stator
- salient pole
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
- H02K1/148—Sectional cores
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/24—Rotor cores with salient poles ; Variable reluctance rotors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/03—Machines characterised by aspects of the air-gap between rotor and stator
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Abstract
The invention provides a hub motor capable of inhibiting radial electromagnetic force and torque pulsation, which comprises an inner stator and an outer rotor, wherein a plurality of outer rotor salient poles protruding inwards in the radial direction are arranged on the inner circle of the outer rotor along the circumferential direction; when the inner stator salient pole passes through the outer rotor salient pole groove, the axial clearance between the outer rotor salient pole groove and the inner stator salient pole is smaller than the radial clearance between the rotor salient pole groove and the stator salient pole and smaller than the radial clearance between the rotor salient pole and the stator; the hub motor with the function of inhibiting the radial electromagnetic force and the torque pulsation can reduce the radial electromagnetic force and the torque pulsation after being applied to a vehicle, and meanwhile, the inner stator adopts a separated structure, so that the complex hub switched reluctance motor has the advantages of more convenient structural installation, large design freedom, simple and convenient operation during manufacturing and modification, strong replaceability and capability of effectively reducing the manufacturing cost.
Description
Technical Field
The invention belongs to the technical field of motors, and particularly relates to a hub motor capable of inhibiting radial electromagnetic force and torque pulsation.
Background
In recent years, a hub motor driving system is continuously popularized and applied in the field of automobile industry, a switched reluctance motor is one of ideal driving motor types of an electric automobile driven by the hub motor, the system is low in cost, stable in mechanical structure, reliable in power topology, simple to control and high in operation efficiency, and the switched reluctance motor is widely concerned in the field of the electric automobile driving motor. On the other hand, the fringe magnetic flux effect is generated before the stator salient pole and the stator salient pole of the switched reluctance motor are overlapped, so that an inductance curve of the motor during unipolar excitation is not zero before the rotor rotates to a tooth-to-tooth overlapping part of the stator and the rotor, the fringe magnetic flux effect causes the motor to output torque outwards in the area, and phase current increases in a nonlinear trend; the output torque of the motor correspondingly increases in a nonlinear trend, so that the output composite torque of the motor fluctuates at the position.
The smoothness and the operation stability of an automobile can be influenced by torque pulsation caused by the fringing magnetic flux effect, so that the reduction of unbalanced radial electromagnetic force and torque pulsation of the switched reluctance motor is an urgent requirement for the development of the hub switched reluctance motor.
Disclosure of Invention
In view of the above, the present invention is directed to overcome the problems encountered by the hub switched reluctance motor, and provides a hub motor and a vehicle with reduced radial electromagnetic force and torque ripple.
The invention can be realized by the following technical scheme aiming at the problem of the complaint:
a hub motor capable of inhibiting radial electromagnetic force and torque pulsation comprises an inner stator and an outer rotor, wherein a plurality of outer rotor salient poles protruding inwards in the radial direction are circumferentially arranged on the inner circle of the outer rotor, the outer circle of the inner stator is circumferentially provided with inner stator salient poles protruding outwards in the radial direction, and outer rotor salient pole grooves used for being matched with the inner stator salient poles are formed in the outer rotor salient poles; when the inner stator salient pole passes through the outer rotor salient pole groove, the axial clearance between the outer rotor salient pole groove and the inner stator salient pole is smaller than the radial clearance between the rotor salient pole groove and the stator salient pole and smaller than the radial clearance between the rotor salient pole and the stator.
Further, the outer rotor salient pole and the inner stator salient pole are respectively provided with a radial pole shoe for inhibiting torque pulsation in the rotating overlapping contact direction, a radial groove matched with the radial pole shoe on the inner stator salient pole is arranged in the salient pole groove of the outer rotor salient pole, and the radial groove is arranged in the position of the outer rotor salient pole groove opposite to the rotating contact position of the inner stator salient pole.
Furthermore, the inner stator is of a separated structure and comprises an inner stator salient pole and an inner stator block root, and the inner stator salient pole is connected with the arc-shaped deep groove of the inner stator block root in a clamping mode through the arc-shaped part of the salient pole root to form a whole.
The inner stator is used for fixing the root of the inner stator block on the inner stator shaft through limiting discs arranged at two ends of the inner stator.
Furthermore, a sliding key for preventing relative rotation is further arranged between the root of the inner stator unit block and the inner stator unit shaft, and a winding is further mounted at the lower end of the inner stator unit block salient pole.
Further, the limiting discs fixed at the two ends of the inner stator are divided into an outer limiting disc and an inner limiting disc from outside to inside according to the direction of the vehicle body, the inner limiting disc is limited by a sleeve arranged on the outer side of the inner limiting disc, the outer limiting disc is limited by a shaft shoulder on the inner stator shaft, and the inner stator is fixed on the inner stator shaft by the limiting discs through the sleeve and the shaft shoulder of the inner stator shaft.
The motor end cover and the outer motor end cover are connected and fixed at a hole of a magnetic yoke of the outer rotor through a fastener, and the inner motor end cover and the outer motor end cover are connected at the edge through a fastener.
The flange plate is arranged on one side of a shaft shoulder of the inner stator, which is far away from the outer limiting plate, and is respectively provided with an outer flange surface and an inner flange surface from outside to inside in the axial direction according to the direction of a vehicle body; the outer flange surface of the flange plate is provided with a coaxial rim, and the end part outside the outer flange surface of the flange plate is sleeved in a central bearing hole of the rim; the flange plate, the rim and the outer motor end cover are fixedly connected together through fasteners.
The motor further comprises hub bearings arranged in an inner circle of an inner motor end cover and an inner circle of a flange plate, wherein the hub bearings are double-ball bearings; the inner motor end cover and the inner stator shaft are fixed together through a double-ball bearing; two double-ball bearings are arranged in the flange plate, and the flange plate is fixedly connected to the outer side of the shaft shoulder of the inner stator shaft through the two double-ball bearings.
Further, a tire is arranged on the outer ring of the rim, and the rim and the tire are fixedly connected together through the inner ring of the tire.
Compared with the prior art, the invention has the following effective effects:
1) the invention designs that the two axial ends of the inner stator salient pole are provided with the slots, the inner side of the outer rotor salient pole is provided with the slots, the axial air gap formed by the inner stator unit and the outer rotor unit is smaller than the radial air gap, and the magnetic flux direction is changed based on the 'least reluctance principle'.
2) The invention adds a pair of radial pole shoes in the rotating overlapping contact direction of the inner stator and the outer rotor respectively, and slots are formed in the radial direction of the outer rotor in the opposite direction, the special structure of the invention can change the size of a magnetic flux path, so that the edge magnetic flux effect of the outer rotor and the inner stator and the saturation degree of a magnetic circuit are relieved, and the slots change the current/voltage excitation conduction angle of each phase and the pole arc length of the rotor, thereby reducing the torque pulsation of the hub switch reluctance motor.
3) The inner stator is of a separated structure, so that a complex hub switched reluctance motor structure is more convenient to install, the design freedom degree is high, when the hub switched reluctance motor structure is optimized in the later period, only the salient pole of the inner stator can be changed when the inner stator unit is optimized, the manufacturing cost is reduced, the inner stator unit can be manufactured into multiple poles, and the inner stator unit is not influenced by the interference of the motor rotor structure during installation.
4) The inner stator salient pole and the outer rotor salient pole can be set to be different in length according to output power, and the inner structure and the outer structure of the inner stator salient pole and the outer rotor salient pole can be interchanged according to work requirements.
Drawings
The invention is further described below with reference to the figures and embodiments.
FIG. 1 schematic view of an in-wheel motor of the present invention
FIG. 2 is an exploded view of the in-wheel motor according to the present invention
FIG. 3 is a schematic view of the root of the inner stator block of the present invention
FIG. 4 is a schematic view of salient pole of internal stator of the present invention
FIG. 5 is a schematic view of an outer rotor of the present invention
FIG. 6 is an enlarged view of the position A of the outer rotor of the present invention
FIG. 7 is a schematic view of a magnetic flux circuit of the present invention
Wherein: 1-a tire; 2-connecting bolts; 3-inner motor end cover; 4-inner stator salient pole; 5-an inner limiting disc; 6, 16, 18-double ball bearing; 7-a sleeve; 8-inner stator block root; 9-a limit nut; 10-winding; 11-an outer rotor; 12-outer rotor hex bolts; 13-an outer limiting disc; 14-spacing hex bolts; 15-rim nut; 17-inner stator shaft; 19-rim hex bolts; 20-a flange plate; 21-outer rotor nut; 22-outer motor end cap; 23-a rim; 24-a feather key; 25-an inner stator; 111-outer rotor salient poles; 112-radial pole shoe; 113-outer rotor salient pole groove; 114-radial slots.
Detailed Description
As shown in the figures, the hub motor capable of suppressing radial electromagnetic force and torque ripple provided by the invention comprises an inner stator 25 and an outer rotor 11, wherein a plurality of outer rotor salient poles 111 protruding inwards in the radial direction are arranged on the inner circle of the outer rotor along the circumferential direction, inner stator salient poles 4 protruding outwards in the radial direction are arranged on the outer circle of the inner stator along the circumferential direction, and outer rotor salient pole grooves 113 used for being matched with the inner stator salient poles 4 are arranged on the outer rotor salient poles 111; when the inner stator salient pole 4 passes through the outer rotor salient pole groove 113, the axial clearance between the outer rotor salient pole groove 113 and the inner stator salient pole 4 is smaller than the radial clearance between the outer rotor salient pole groove 113 and the inner stator salient pole 4 and smaller than the radial clearance between the outer rotor salient pole and the inner stator.
In this embodiment, the outer rotor salient pole 111 and the inner stator salient pole 4 are respectively provided with a radial pole piece 112 for suppressing torque pulsation in the rotational overlapping contact direction, and a radial groove 114 used in cooperation with the radial pole piece 112 on the inner stator salient pole 4 is provided in the outer rotor salient pole groove 113, and the radial groove 114 is provided in a position opposite to the rotational contact direction of the outer rotor salient pole groove 113 and the inner stator salient pole 4.
As shown in fig. 4, 5 and 6, the radial pole shoes 112 for suppressing torque ripple are respectively disposed on the outer rotor salient poles 111 and the inner stator salient poles 4 in the direction of overlapping rotational contact, and the radial slots 114 are disposed at the positions opposite to the rotational contact direction of the outer rotor salient pole slots 113 and the inner stator salient poles 4, so that the size of the flux path is changed and the torque ripple of the in-wheel motor is reduced.
Referring to fig. 1 and 7, a radial air gap and an axial air gap are arranged between the inner stator 25 and the outer rotor 11, two axial air gaps are formed between the outer rotor salient pole groove 113 and the inner stator salient pole 4, three radial air gaps are formed between the inner stator salient pole 4 and between the outer rotor salient pole 111 and the inner stator 25, the formed three radial air gaps are far larger than the two formed axial air gaps, and the two axial air gaps have the same length and width; the set axial air gap is between 0.2 and 0.5mm, the radial air gaps are far larger than 0.5mm, and the width of the salient pole arc of the inner stator and the width of the salient pole arc of the outer rotor can be set with different parameters according to working conditions. The hub motor provided by the invention changes the magnetic flux direction on the hub motor by adopting a 'minimum reluctance principle', and can effectively reduce the radial electromagnetic force in the motor.
In the embodiment, the inner stator is of a separated structure and comprises an inner stator salient pole 4 and an inner stator block root 8, and the inner stator salient pole 4 is connected with an arc-shaped deep groove part of the inner stator block root 8 in a clamping mode through an arc-shaped part of the salient pole root to form a whole.
In this embodiment, the inner stator shaft 17 is further included for connecting and fixing the inner stator, and the inner stator 25 fixes the inner stator block root 8 on the inner stator shaft 17 through the limiting discs arranged at the two ends of the inner stator 25.
Referring to fig. 1, 3 and 4, when the inner stator 25 is installed, the end surfaces of the two ends of the outer rotor 11 are arranged on the same reference plane as the end surfaces of the two ends of the inner stator block root 8, the inner stator shaft 17 is rotated to drive the inner stator block root 8 to rotate, and the arc-shaped part of the inner stator block salient pole 4 and the arc-shaped deep groove part of the inner stator block root 8 are sequentially installed in a matching manner from the space formed by the inner stator block root 8 and the outer rotor salient pole 11.
As shown in fig. 3, 4 and 7, the inner stator 25 is separated into the inner stator block root 8 and the inner stator salient pole 4, the switched reluctance motor can be set to be multipolar in the structure, the design freedom degree is large, the size of a magnetic circuit and the size of a winding window can be changed as required, when the structure of the inner stator 25 is optimized, the inner stator salient pole 4 can be optimized and manufactured, when relevant experiments are carried out, the inner stator salient pole 4 can be replaced, the manufacturing cost is reduced, and the installation is not limited by the structure of the inner stator.
In this embodiment, a sliding key 24 for preventing relative rotation is further disposed between the inner stator segmented root 8 and the inner stator shaft 17, and the winding 10 is further mounted at the lower end of the inner stator segmented salient pole 4.
As shown in fig. 2, 3 and 7, a sliding key 24 is provided between the inner stator segment root 8 and the inner stator shaft 17, and in order to prevent the inner stator segment root 8 and the inner stator shaft 17 from rotating relatively, the inner stator segment root 8 is in interference fit with the inner stator shaft 17 through the sliding key 24; the winding 10 is fixed on the inner stator salient pole 4, and the position of the winding 10 can be fixed up and down at the joint part of the inner stator salient pole 4 and the inner stator block root 8.
Because the wheel hub motor belongs to the switch reluctance motor, when current excitation is applied to the winding 10, magnetomotive force is generated in the winding, according to the 'minimum reluctance principle', magnetic lines only pass through an axial air gap between the inner stator 25 and the outer rotor 11 and are closed according to the shortest path, the component of the magnetic flux in the radial direction reaches the lowest, further, the radial electromagnetic force of the switch reluctance motor is reduced, and the axial electromagnetic force and the tangential electromagnetic force are formed under the condition of neglecting the fringe magnetic flux effect, the axial air gap of the inner stator 25 is equal to that of the outer rotor 11, the inner stator salient pole 4 is positioned in the middle of the outer rotor salient pole 11, the formed axial electromagnetic forces are balanced with each other, and the structure has small influence on the tangential electromagnetic force.
As shown in fig. 5, 6 and 7, a pair of radial pole shoes are respectively added in the rotating overlapping contact direction of the inner stator 25 and the outer rotor 11, the radial pole shoe structure can change the magnetic flux path and the size before the salient poles of the inner stator 25 and the outer rotor 11 are overlapped and contacted, the pole arc length of the radial pole shoes can be increased, the fringe magnetic flux effect and the magnetic circuit saturation degree of the switched reluctance motor can be effectively relieved, and the higher harmonics of the torque can be weakened. The outer rotor 11 is radially slotted in the opposite direction of the contact and overlapping of the two salient pole shoes, the width and the radial length of the two salient pole shoes can be respectively set with different parameters, and the pole arc length of the radial slot can adjust the current and the voltage excitation conduction angle of each phase, so that the torque pulsation of the switched reluctance motor can be reduced.
In this embodiment, the limiting discs at the two ends of the fixed and inner stator 25 are divided into an outer limiting disc 13 and an inner limiting disc 5 from outside to inside in the vehicle body direction, the inner limiting disc 5 is limited by a sleeve 7 arranged outside the inner limiting disc 5, the outer limiting disc 13 is limited by a shaft shoulder on the inner stator unit shaft 17, and the inner stator 25 is fixed on the inner stator shaft 17 by the limiting discs through the sleeve 7 and the shaft shoulder of the inner stator shaft.
Referring to fig. 1, 3 and 4, the inner limiting disc 5 and the outer limiting disc 13 are axially limited by a sleeve 7 and a shaft shoulder on an inner stator shaft 17, the inner limiting disc 5 and the outer limiting disc 13 axially limit the inner stator segment root 8 and two ends of the salient pole 4, and the inner limiting disc 5 and the outer limiting disc 13 fix the inner stator segment root 8 and the inner stator salient pole 4 together through a limiting hexagon bolt 14 and a limiting hexagon nut 9.
In this embodiment, the motor end cover further comprises motor end covers arranged at two ends of the outer rotor 11, the motor end covers are divided into an outer motor end cover 22 and an inner motor end cover 3 from outside to inside according to the vehicle body direction, the inner motor end cover 3 and the outer motor end cover 22 are connected and fixed at the hole of the magnetic yoke of the outer rotor 11 through a fastener, and the inner motor end cover 3 and the outer motor end cover 22 are further connected at the edge through a fastener.
As shown in fig. 1, 2 and 5, the outer motor end cap 22 is circular-disc-shaped and has an arc inner side, the inner motor end cap 3 is circular-disc-shaped and has a stepped inner side, the outer rotor 11 has four salient pole portions at the inner side, and the inner motor end cap 3, the outer rotor 11 and the outer motor end cap 22 pass through the outer rotor hexagon bolts 12 and the outer rotor hexagon nuts 21 at the holes of the yoke of the outer rotor 11. The inner motor end cover 3 and the outer motor end cover 22 are fixedly connected together at the edges by means of connecting bolts 2.
In the embodiment, the motor also comprises a flange plate 20 which is coaxial with the inner stator shaft 17, the flange plate axially and respectively comprises an outer flange surface and an inner flange surface from outside to inside according to the direction of the motor body, the inner flange surface is arranged on the outer side of the outer motor end cover 22, and the end part of the inner flange surface is sleeved in a central bearing hole of the outer motor end cover 22; the outer flange surface of the flange plate 20 is provided with a coaxial rim 23, and the end part of the outer flange surface is sleeved in a central bearing hole of the rim; the flange plate 20, the rim 23 and the outer motor end cover 22 are fixedly connected together through fasteners; the tire 1 is arranged on the outer ring of the rim 23, and the rim 23 and the tire 1 are fixedly connected together through the inner ring of the tire.
In the embodiment, the motor further comprises hub bearings arranged inside the inner motor end cover 3 and inside the flange plate, wherein the hub bearings are double-ball bearings; the inner motor end cover 3 and the inner stator shaft 17 are fixed together through a double-ball bearing 6; two double-ball bearings, namely a double-ball bearing 16 and a double-ball bearing 18, are arranged in the flange plate 20, and the flange plate 20 is fixedly connected to the outer side of the shaft shoulder of the inner stator through the two double-ball bearings.
Referring to fig. 1 and 2, an outer rotor hexagon bolt 12 is installed from a hole formed in the direction of an inner motor end cover 3, the outer rotor hexagon bolt 12 is sleeved into a reserved bolt hole of an outer rotor 11, the inner motor end cover 3 is sleeved outside a double ball bearing 6, so that the outer end surface of the inner motor end cover 3 and the double ball bearing 6 are on the same reference surface, the outer rotor hexagon bolt is sleeved into a reserved bolt hole of an outer motor end cover 22 and is fastened and connected through an outer rotor hexagon nut, a flange plate 20 is sleeved outside the double ball bearings 16 and 18, so that the outer end surface of the flange plate 20, the double ball bearing 18 and the outer end surface of an inner stator shaft 17 are on the same reference surface, and finally the inner motor end cover 3 and the outer motor end cover 22 are fixedly connected through a motor end cover hexagon screw 2.
As shown in fig. 1 and 2, the rim 23 is fixed to the outer side of the flange plate 20 by the rim hexagon bolts 19 and the rim hexagon nuts, and the rim 23 and the tire 1 are fixedly connected together by the inner ring of the tire. The outer rotor 11 drives the transmission path of the inner motor end cover 3, the outer motor end cover 22, the rim hexagon bolt 19, the rim hexagon nut 15 and the rim 23 to drive the whole tire to rotate.
The invention also discloses a vehicle, which adopts the hub motor with the function of inhibiting the radial electromagnetic force and the torque pulsation, can reduce the influence of the radial electromagnetic force under the vertical negative effects of stator and rotor vibration, eccentricity and the like of the hub motor under the condition of road excitation, and can obviously improve the smoothness of the vehicle. The hub motor structure used by the vehicle and capable of inhibiting the radial electromagnetic force and the torque pulsation can change the size of a magnetic flux path, so that the edge magnetic flux effect of the outer rotor and the inner stator and the saturation degree of a magnetic circuit are relieved, the slotting changes the phase current/voltage excitation conduction angle and the rotor pole arc length of each phase, and the torque pulsation of the hub switch reluctance motor is reduced.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (10)
1. A hub motor capable of restraining radial electromagnetic force and torque pulsation is characterized in that: the outer rotor salient pole slot is used for being matched with the inner stator salient pole slot through the inner stator salient pole; when the inner stator salient pole passes through the outer rotor salient pole groove, the axial clearance between the outer rotor salient pole groove and the inner stator salient pole is smaller than the radial clearance between the rotor salient pole groove and the stator salient pole and smaller than the radial clearance between the rotor salient pole and the stator.
2. The in-wheel motor with suppressing radial electromagnetic force and torque ripple of claim 1, wherein: the outer rotor salient pole and the inner stator salient pole are respectively provided with a radial pole shoe for inhibiting torque pulsation in the rotating overlapping contact direction, a radial groove matched with the radial pole shoe on the inner stator salient pole is arranged in the salient pole groove of the outer rotor salient pole, and the radial groove is arranged in the position of the outer rotor salient pole groove opposite to the rotating contact direction of the inner stator salient pole.
3. The in-wheel motor with suppressing radial electromagnetic force and torque ripple of claim 1, wherein: the inner stator is of a separated structure and comprises an inner stator salient pole and an inner stator block root, and the inner stator salient pole is connected with an arc-shaped deep groove part of the inner stator block root in a clamping mode through an arc-shaped part of the salient pole root to form a whole.
4. The in-wheel motor with suppressing radial electromagnetic force and torque ripple of claim 3, wherein: the inner stator is used for fixing the inner stator shaft in a connecting mode, and the root of the inner stator block is fixed on the inner stator shaft through limiting discs arranged at two ends of the inner stator.
5. The in-wheel motor with suppressing radial electromagnetic force and torque ripple of claim 4, wherein: and a sliding key for preventing relative rotation is further arranged between the root of the inner stator unit block and the inner stator unit shaft, and a winding is further mounted at the lower end of the inner stator unit block salient pole.
6. The in-wheel motor with suppressing radial electromagnetic force and torque ripple of claim 4, wherein: the limiting discs fixed at two ends of the inner stator are divided into an outer limiting disc and an inner limiting disc from outside to inside according to the direction of a vehicle body, the inner limiting disc is limited by a sleeve arranged on the outer side of the inner limiting disc, the outer limiting disc is limited by a shaft shoulder on the inner stator shaft, and the inner stator is fixed on the inner stator shaft by the limiting discs through the sleeve and the shaft shoulder of the inner stator shaft.
7. The in-wheel motor with suppressing radial electromagnetic force and torque ripple of claim 1, wherein: the motor end covers are arranged at two ends of the outer rotor and divided into the outer motor end cover and the inner motor end cover from outside to inside according to the direction of a vehicle body, the inner motor end cover and the outer motor end cover are fixedly connected at the hole of the magnetic yoke of the outer rotor through fasteners, and the inner motor end cover and the outer motor end cover are further connected at the edge through fasteners.
8. The in-wheel motor with suppressing radial electromagnetic force and torque ripple of claim 1, wherein: the flange plate is arranged on one side of a shaft shoulder of the inner stator, which is far away from the outer limiting plate, and is axially provided with an outer flange surface and an inner flange surface from outside to inside according to the direction of a vehicle body; the outer flange surface of the flange plate is provided with a coaxial rim, and the end part outside the outer flange surface of the flange plate is sleeved in a central bearing hole of the rim; the flange plate, the rim and the outer motor end cover are fixedly connected together through fasteners.
9. The in-wheel motor with suppressing radial electromagnetic force and torque ripple of claim 7, wherein: the hub bearings are arranged in an inner circle of an inner motor end cover and an inner circle of a flange plate, and are double-ball bearings; the inner motor end cover and the inner stator shaft are fixed together through a double-ball bearing; two double-ball bearings are arranged in the flange plate, and the flange plate is fixedly connected to the outer side of the shaft shoulder of the inner stator shaft through the two double-ball bearings.
10. The in-wheel motor with suppressing radial electromagnetic force and torque ripple of claim 7, wherein: the tire is arranged on the outer ring of the rim, and the rim and the tire are fixedly connected together through the inner ring of the tire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210880484.8A CN115118029A (en) | 2022-07-25 | 2022-07-25 | Hub motor capable of restraining radial electromagnetic force and torque pulsation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210880484.8A CN115118029A (en) | 2022-07-25 | 2022-07-25 | Hub motor capable of restraining radial electromagnetic force and torque pulsation |
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| Publication Number | Publication Date |
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| CN115118029A true CN115118029A (en) | 2022-09-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210880484.8A Pending CN115118029A (en) | 2022-07-25 | 2022-07-25 | Hub motor capable of restraining radial electromagnetic force and torque pulsation |
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| CN (1) | CN115118029A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116992722A (en) * | 2023-08-01 | 2023-11-03 | 山东大学 | Rotor salient pole optimization method and system for switched reluctance motor |
-
2022
- 2022-07-25 CN CN202210880484.8A patent/CN115118029A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116992722A (en) * | 2023-08-01 | 2023-11-03 | 山东大学 | Rotor salient pole optimization method and system for switched reluctance motor |
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