CN220964610U - Motor for suspension system, suspension system and vehicle - Google Patents

Abstract

The utility model discloses a motor for a suspension system, a suspension system and a vehicle, wherein the motor for the suspension system comprises: a housing having a receiving cavity therein; the stator assembly is arranged in the accommodating cavity; a rotor assembly disposed radially inward of the stator assembly, the rotor assembly comprising: the rotor comprises a rotor shaft, a rotor core and permanent magnets, wherein the rotor core is coaxially fixed with the rotor shaft, the permanent magnets are arranged on the outer peripheral surface of the rotor core, the number of the permanent magnets is multiple, the multiple permanent magnets are distributed along the axial direction of the rotor core, and at least two adjacent permanent magnets in the axial direction of the rotor core are staggered in the circumferential direction of the rotor core. According to the motor for the suspension system, torque pulsation output in the working process can be reduced, and stability and silencing performance are improved.

Description

Motor for suspension system, suspension system and vehicle

Technical Field

The utility model relates to the technical field of vehicles, in particular to a motor for a suspension system, the suspension system and a vehicle.

Background

With the development of vehicle technology and the continuous improvement of the requirements of users on vehicles, more and more technologies are applied to vehicles to improve the performance and the use experience of the vehicles, wherein in a vehicle suspension part, many vehicles start to use an active suspension system, the active suspension system can improve the stability of the vehicles in the running process of the vehicles, and a motor can be used as an output power source for the active suspension system to act on some vehicles, so that in the related technologies, the torque pulsation output by the motor is larger, and the noise in the working process of the motor is larger.

Disclosure of utility model

The present utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model consists in proposing an electric motor for a suspension system which outputs less torque ripple and is quieter during operation of the motor.

The utility model also provides a suspension system with the motor for the suspension system.

The utility model also provides a vehicle with the suspension system.

An electric motor for a suspension system according to a first aspect of the present utility model includes: a housing having a receiving cavity therein; the stator assembly is arranged in the accommodating cavity; a rotor assembly disposed radially inward of the stator assembly, the rotor assembly comprising: the rotor comprises a rotor shaft, a rotor core and permanent magnets, wherein the rotor core is coaxially fixed with the rotor shaft, the permanent magnets are arranged on the outer peripheral surface of the rotor core, the number of the permanent magnets is multiple, the multiple permanent magnets are distributed along the axial direction of the rotor core, and at least two adjacent permanent magnets in the axial direction of the rotor core are staggered in the circumferential direction of the rotor core.

According to the motor for the suspension system of the first aspect of the utility model, by arranging at least part of the two permanent magnets adjacent in the axial direction of the rotor core in a staggered manner in the circumferential direction of the rotor core, the degree of variation of the magnetic field force received in the radial direction of the rotor core can be reduced, and the magnetic field force received in the radial direction of the rotor core can be reduced, so that torque pulsation output during the operation of the motor for the suspension system can be reduced, and stability and silencing performance can be improved.

According to some embodiments of the utility model, the rotor core includes a plurality of rotor core layers arranged in a stacked manner in an axial direction of the rotor core, and a plurality of the permanent magnets arranged at intervals in a circumferential direction of the rotor core are provided on an outer peripheral surface of each of the rotor core layers.

According to some embodiments of the present utility model, the axially adjacent permanent magnets of the plurality of rotor core layers are sequentially staggered in a first direction in the circumferential direction of the rotor core in a direction from one axial end of the rotor core toward the other axial end; or, the rotor core comprises a plurality of oblique pole groups, each oblique pole group comprises a plurality of rotor core layers which are arranged in a stacked mode along the axial direction of the rotor core, in two adjacent oblique pole groups, the permanent magnets which are adjacent to each other in the axial direction of the rotor core layers in one oblique pole group are arranged in a staggered mode along a first direction, the permanent magnets which are adjacent to each other in the axial direction of the rotor core layers in the other oblique pole group are arranged in a staggered mode along a second direction, and the first direction and the second direction are two directions which are opposite to each other in the circumferential direction of the rotor core respectively.

According to some embodiments of the utility model, the rotor shaft is provided with a baffle plate and a pressing plate which are arranged at intervals in the axial direction of the rotor shaft, and the baffle plate and the pressing plate are respectively abutted with two end surfaces of the rotor core in the axial direction.

According to some embodiments of the utility model, the pressing plate is integrally formed with the rotor shaft, and the pressing plate is configured to abut against an end face of the rotor core after being turned outwards in a radial direction of the rotor shaft.

According to some embodiments of the utility model, the stator assembly includes a stator core and a stator winding, the stator winding is wound on the stator core, and the stator winding is a concentrated winding.

According to some embodiments of the utility model, the motor for a suspension system further comprises: the stator end plate is arranged in the shell and is arranged at least one end of the stator assembly in the axial direction, the stator end plate is a glue filling piece, an insulating piece and a heat radiating piece, and the shell and the stator assembly are connected into a whole through the stator end plate.

According to some embodiments of the utility model, the motor for a suspension system further comprises: a low voltage connector disposed on the housing for electrically connecting a low voltage harness; and/or a high voltage connector provided on the housing for electrically connecting a high voltage harness.

According to some embodiments of the utility model, the motor for a suspension system further comprises: and the rotary transformer is connected with the rotor assembly and used for detecting the rotation angle of the rotor assembly.

The suspension system according to the second aspect of the present utility model includes: the above-described motor for a suspension system according to the first aspect of the present utility model; one end of the rotor shaft is connected with the speed reducer; the connecting rod is connected between the speed reducer and the shock absorber.

According to the suspension system of the second aspect of the present utility model, by providing the motor for a suspension system according to the first aspect of the present utility model described above, an active shock absorbing function of the suspension system can be achieved, and stability and mute performance of the suspension system during operation can be improved.

A vehicle according to a third aspect of the present utility model includes a frame and the suspension system according to the second aspect of the present utility model described above, the suspension system being provided on the frame.

According to the vehicle of the third aspect of the utility model, by arranging the suspension system according to the second aspect of the utility model, the stability and the mute performance of the vehicle during running can be improved, so that the riding experience of passengers in the vehicle can be improved.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

FIG. 1 is a schematic illustration of a vehicle according to an embodiment of the utility model;

FIG. 2 is a schematic illustration of the motor for the suspension system shown in FIG. 1;

FIG. 3 is an exploded view of the motor for the suspension system shown in FIG. 2;

FIG. 4 is a cross-sectional view of the motor for the suspension system shown in FIG. 2;

FIG. 5 is a schematic illustration of the stator assembly shown in FIG. 3;

FIG. 6 is a schematic view of the rotor assembly shown in FIG. 3;

FIG. 7 is an exploded view of the rotor assembly shown in FIG. 6;

fig. 8 is a schematic view of the rotor core and permanent magnets shown in fig. 7.

Reference numerals:

10000. A vehicle;

1000. A suspension system;

100. A motor for a suspension system;

10. a housing; 11. a front end cover; 12. a rear end cover; 13. a main housing;

20. A stator assembly; 21. a stator core; 211. stator teeth; 22. a stator winding;

30. A rotor assembly; 31. a rotor shaft; 311. a baffle; 312. a pressing plate; 3121. an avoidance port; 32. a rotor core; 321. a rotor core layer; 33. a permanent magnet;

40. A stator end plate;

50. a low voltage connector;

60. A high voltage connector;

70. A rotary transformer;

80. A seal ring;

200. A speed reducer;

300. A connecting rod;

400. A damper;

2000. and a frame.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

An electric motor 100 for a suspension system according to an embodiment of the first aspect of the present utility model is described below with reference to fig. 1-8.

As shown in fig. 3, 4, 6 and 7, an electric motor 100 for a suspension system according to an embodiment of the first aspect of the present utility model includes: a housing 10, a stator assembly 20 and a rotor assembly 30.

Specifically, the housing 10 has a receiving cavity therein, the stator assembly 20 is disposed in the receiving cavity, the rotor assembly 30 is disposed radially inward of the stator assembly 20, and the rotor assembly 30 includes: the rotor shaft 31, the rotor core 32 and the permanent magnets 33, the rotor core 32 is coaxially fixed with the rotor shaft 31, the permanent magnets 33 are provided on the outer peripheral surface of the rotor core 32, the number of the permanent magnets 33 is plural, for example, the number of the permanent magnets 33 may be two, three or four, the plurality of the permanent magnets 33 are arranged along the axial direction of the rotor core 32, and at least part of the two permanent magnets 33 adjacent in the axial direction of the rotor core 32 are arranged in a staggered manner in the circumferential direction of the rotor core 32, that is, the permanent magnets 33 are arranged in a slanting manner on the rotor core 32.

Wherein, the housing 10 provides protection for the stator assembly 20 and the rotor assembly 30, the stator assembly 20 is used for generating a magnetic field for driving the rotor assembly 30 to rotate, and the rotor assembly 30 is used for outputting driving force outwards.

In the operation of the motor 100 for a suspension system, the rotor shaft 31 is connected to a component to be driven, the magnetic field generated by the stator assembly 20 generates a magnetic field force to the permanent magnet 33, the permanent magnet 33 drives the rotor core 32 and the rotor shaft 31 to rotate under the action of a component force of the magnetic field force in the circumferential direction of the rotor assembly 30, and at the same time, the rotor shaft 31 outputs the rotation to the component to be driven, thereby completing the operation of the motor 100 for a suspension system.

During the rotation of the rotor assembly 30, the rotor assembly 30 inevitably vibrates with respect to the stator assembly 20, so that the gap between the rotor assembly 30 and the stator assembly 20 changes irregularly, and therefore, the magnetic resistance between the rotor assembly 30 and the stator assembly 20 changes irregularly, and the magnetic field acting on the permanent magnet 33 changes irregularly under the influence of the magnetic field of the rotor assembly 30 itself and the irregular change of the environment.

When the magnetic field acts on the permanent magnet 33, the magnetic field force has component force in the radial direction of the rotor assembly 30, under the action of the irregularly changing magnetic field, the permanent magnet 33 can receive overlarge magnetic field force in the radial direction of the rotor assembly 30 on the changing phase, so that the torque pulsation output by the rotor core 32 is larger, and the overlarge magnetic field force of the rotor shaft 31 in the radial direction of the rotor assembly 30 can intensify the vibration of the rotor shaft 31, so that the noise in the working process of the motor 100 used for the suspension system is larger.

In the present embodiment, by arranging the two permanent magnets 33 adjacent at least in part in the axial direction of the rotor core 32 so as to be staggered in the circumferential direction of the rotor core 32, the magnetic field force in the radial direction of the rotor assembly 30 is more densely and uniformly distributed, the probability of the magnetic field forces in the radial direction of the rotor assembly 30 being mutually offset is greater, thereby improving the degree of the mutual offset of the magnetic field forces in the radial direction of the rotor core 32, the degree of variation of the magnetic field force received in the radial direction of the rotor core 32 can be reduced during the rotation of the rotor assembly 30, and the magnetic field force received in the radial direction of the rotor core 32 can be reduced, whereby the torque output during the operation of the motor 100 for a suspension system can be more stabilized, and the vibration amplitude during the rotation of the rotor assembly 30 can be reduced, thereby reducing the noise during the operation of the motor 100 for a suspension system.

According to the motor 100 for a suspension system of the embodiment of the first aspect of the present utility model, by arranging the two permanent magnets 33 adjacent at least in part in the axial direction of the rotor core 32 so as to be offset in the circumferential direction of the rotor core 32, it is possible to reduce the degree of variation in the magnetic field force received in the radial direction of the rotor core 32 and reduce the magnetic field force received in the radial direction of the rotor core 32, thereby reducing the torque ripple output during operation of the motor 100 for a suspension system, and improving the stability and the silencing performance.

In some embodiments of the present utility model, as shown in fig. 6 to 8, the rotor core 32 includes a plurality of rotor core layers 321 arranged in a stacked manner in the axial direction of the rotor core 32, for example, the rotor core layers 321 may be two, three or four, and a plurality of permanent magnets 33 arranged at intervals in the circumferential direction of the rotor core 32 are provided on the outer circumferential surface of each rotor core layer 321. Like this, when rotor core 32 is assembled, make the permanent magnet 33 on the different rotor core 321 stagger in the circumference of rotor core 32 through rotating rotor core 321, can realize that permanent magnet 33 arranges in the inclined plane on rotor core 32, operation process is simple to can reduce the assembly degree of difficulty, promote assembly efficiency, in the in-process of product design, can adjust the quantity of rotor core 321 and the pivoted relative angle between the different rotor core 321, satisfy different product design needs, thereby reduce the product design degree of difficulty.

In some embodiments of the present utility model, the axially adjacent permanent magnets 33 of the plurality of rotor core layers 321 may be sequentially staggered in the first direction along the circumferential direction of the rotor core 32 in the direction from one end to the other end of the axial direction of the rotor core 32, so that the arrangement manner of the permanent magnets 33 in the circumferential direction of the rotor core 32 is simpler and the difficulty in product design and assembly is lower.

As shown in fig. 6 to 8, in the direction from one axial end toward the other end of the rotor core 32, it is also possible that the rotor core 32 includes a plurality of skewed pole groups, each skewed pole group includes a plurality of rotor core layers 321 arranged in a stacked manner in the axial direction of the rotor core 32, in adjacent two skewed pole groups, axially adjacent permanent magnets 33 of the plurality of rotor core layers 321 in one skewed pole group are sequentially staggered in a first direction (e.g., the top-to-bottom direction in fig. 6), and axially adjacent permanent magnets 33 of the plurality of rotor core layers 321 in the other skewed pole group are sequentially staggered in a second direction (e.g., the bottom-to-top direction in fig. 6), the first direction and the second direction being respectively opposite directions in the circumferential direction of the rotor core 32. Thus, the magnetic force applied to the permanent magnet 33 can be distributed more uniformly on the rotor assembly 30, thereby further improving stability and silencing performance of the motor 100 for a suspension system during operation and reducing output torque pulsation.

In the process of product design, the distribution mode of the permanent magnets 33 on the rotor core 32 can be adjusted to meet different product design requirements, so that the product design difficulty is reduced.

In some embodiments of the present utility model, the rotor core 321 is a piece of silicon steel material, which has high magnetic permeability, and the operation effect of the motor 100 for a suspension system can be ensured by providing the rotor core 321 as a piece of silicon steel material.

In some embodiments of the present utility model, as shown in fig. 6, a baffle 311 and a pressing plate 312 are provided on the rotor shaft 31 at intervals in the axial direction of the rotor shaft 31, and the baffle 311 and the pressing plate 312 are respectively abutted against both end surfaces in the axial direction of the rotor core 32. When the rotor core 32 is displaced in the axial direction of the rotor shaft 31 relative to the rotor shaft 31, the baffle 311 and the pressing plate 312 can prevent the rotor core 32 from being separated from the rotor shaft 31, and when the rotor core 32 rotates relative to the rotor shaft 31 along the axis of the rotor shaft 31, the baffle 311 and the pressing plate 312 which are abutted against the rotor core 32 can prevent the rotor core 32 from rotating relative to the rotor shaft 31, thereby realizing the fixed connection of the rotor core 32 and the rotor shaft 31, wherein the reliability of the fixed connection of the rotor shaft 31 and the rotor core 32 can be improved through the abutment of the baffle 311 and the pressing plate 312 with the two end surfaces of the rotor core 32 in the axial direction respectively.

In some embodiments of the present utility model, the pressing plate 312 is integrally formed with the rotor shaft 31, and the pressing plate 312 is configured to abut against an end surface of the rotor core 32 after being turned outward in a radial direction of the rotor shaft 31. Before the rotor core 32 is assembled to the rotor shaft 31, the pressing plate 312 is perpendicular to the axial direction of the rotor shaft 31, so that the pressing plate 312 and the rotor shaft 31 can smoothly pass through the mounting hole on the rotor core 32, the rotor core 32 is sleeved on the rotor shaft 31, when the rotor core 32 is assembled in place on the rotor shaft 31, the rotor core 32 abuts against the end plate, the pressing plate 312 is folded outwards until the pressing plate 312 abuts against the end face of the rotor core 32, and therefore the assembly of the rotor core 32 on the rotor shaft 31 can be achieved. Wherein, through clamp plate 312 and rotor shaft 31 integrated into one piece, can reduce the production degree of difficulty, promote production efficiency.

In some embodiments of the present utility model, as shown in fig. 6, the pressure plate 312 is formed with a plurality of relief openings 3121, for example, the relief openings 3121 may be two, three or four, and the plurality of relief openings 3121 are spaced apart at the edge of the pressure plate 312. By providing the plurality of avoidance openings 3121, when the pressing plate 312 is disposed perpendicularly to the axis of the rotor shaft 31, the avoidance openings 3121 can provide an avoidance space so that the pressing plate 312 can be perpendicular to the axis of the rotor shaft 31.

In some embodiments of the present utility model, at least one lightening hole (not shown in the drawings) is further provided on the pressing plate 312, for example, one, two or three lightening holes may be provided, and the lightening holes may lighten the weight of the rotor assembly 30 by providing the lightening holes, thereby reducing the rotation load of the rotor assembly 30 itself, improving the output efficiency of the motor 100 for the suspension system, and facilitating the lightweight design of the motor 100 for the suspension system. In addition, during the rotation of the rotor assembly 30, the rotor assembly 30 can be dynamically balanced by adjusting the number, size, distribution position and other parameters of the lightening holes.

In some embodiments of the present utility model, as shown in fig. 5, the stator assembly 20 includes a stator core 21 and a stator winding 22, the stator winding 22 is wound on the stator core 21, and the stator winding 22 is a concentrated winding. By providing the stator core 21, the stator core 21 can provide an arrangement space for the stator winding 22, by providing the stator winding 22, the stator winding 22 can generate a magnetic field after being energized, by providing the stator winding 22 as a concentrated winding, the concentrated winding is smaller in volume and uses fewer copper wires, thereby facilitating arrangement of the motor 100 for a suspension system on the vehicle 10000 and reducing production cost.

In some embodiments of the present utility model, as shown in fig. 5, a plurality of stator teeth 211 are formed inside the stator core 21, for example, the number of the stator teeth 211 may be two, three or ten, the plurality of the stator teeth 211 are arranged at intervals, and the stator winding 22 is wound around the stator teeth 211, thereby, arrangement of the stator winding 22 on the stator core 21 can be achieved, and the stator winding 22 is wound around the stator teeth 211 more reliably, which can improve reliability of connection of the stator winding 22 and the stator core 21, thereby improving reliability during operation of the motor 100 for a suspension system. In addition, in the product design process, parameters such as the number of the stator teeth 211, the spacing between the stator teeth 211 and the like can be adjusted, so that more product design requirements are met, and the product design difficulty is reduced.

In some embodiments of the present utility model, as shown in fig. 3, the motor 100 for a suspension system further includes: the stator end plate 40, the stator end plate 40 is disposed in the housing 10 and is arranged at least one end of the stator assembly 20 in the axial direction, the stator end plate 40 is a glue filling piece, an insulating piece and a heat dissipation piece, and the housing 10 and the stator assembly 20 are connected into a whole through the stator end plate 40. In the operation of the motor 100 for a suspension system, a current is supplied to the stator winding 22 and a large amount of heat is generated, and by providing the stator end plate 40, the stator winding 22 can be insulated from other elements, so that the motor 100 for a suspension system can normally operate, and the heat dissipation area of the stator end plate 40 is larger, and the stator end plate 40 absorbs the heat generated by the stator winding 22 and dissipates the heat faster, so that the heat dissipation effect of the stator winding 22 can be improved, thereby improving the reliability of the motor 100 for a suspension system in operation.

In some embodiments of the present utility model, as shown in fig. 2-4, the motor 100 for a suspension system further includes: a high voltage connector 40 and a high voltage connector 50. Specifically, a low-voltage connector 40 is provided on the housing 10 for electrically connecting the low-voltage harness, and a high-voltage connector 50 is provided on the housing 10 for electrically connecting the high-voltage harness. Thereby, electrical connection of the motor 100 for the suspension system with the different voltage harnesses on the vehicle 10000 can be achieved, so that the motor 100 for the suspension system can be operated normally.

In some embodiments of the present utility model, as shown in fig. 3 and 4, the motor 100 for a suspension system further includes: resolver 70, resolver 70 is connected to rotor assembly 30 for detecting a rotation angle of rotor assembly 30. When the motor 100 for the suspension system is powered on, the resolver 70 transmits the detected rotation angle information of the rotor assembly 30 to the motor controller, and the motor controller determines and instructs the rotation angle information of the rotor assembly 30, thereby controlling the motor 100 for the suspension system.

In some embodiments of the present utility model, as shown in fig. 2, the housing 10 includes a front cover 11, a rear cover 12, and a main housing 13, a receiving chamber having both ends open is defined in the main housing 13, and the front cover 11 and the rear cover 12 are provided at both ends of the main housing 13 to block the receiving chamber. Therefore, in the assembling process, the components can be assembled into the accommodating cavity in the main shell 13, and then the front end cover 11 and the rear end cover 12 are sealed at two ends of the main shell 13, so that the assembling difficulty can be reduced, the assembling efficiency is improved, and when the motor 100 for the suspension system needs to be overhauled, the front end cover 11 and/or the rear end cover 12 can be disassembled, so that the overhauling of the motor 100 for the suspension system is convenient to realize.

In some embodiments of the present utility model, as shown in fig. 2, the motor 100 for a suspension system further includes a sealing ring 80, the sealing ring 80 is abutted between the decelerator 200 and the motor 100 for a suspension system, thereby achieving a sealed connection of the decelerator 200 and the motor 100 for a suspension system, and the sealing ring 80 can absorb shock during operation of the decelerator 200 and the motor 100 for a suspension system, thereby improving stability during operation of the suspension system 1000.

A suspension system 1000 according to an embodiment of the second aspect of the present utility model is described below with reference to fig. 1-8.

A suspension system 1000 according to an embodiment of the second aspect of the present utility model, as shown in fig. 1, includes: the motor 100, the decelerator 200, the connecting rod 300, and the shock absorber 400 for the suspension system according to the embodiment of the first aspect of the present utility model described above. Specifically, one end of the rotor shaft 31 is connected to the decelerator 200, and the link 300 is connected between the decelerator 200 and the damper 400.

In the process of the operation of the suspension system 1000, when the shock absorber 400 is compressed by the vibration of the vehicle 10000, the motor 100 for the suspension system drives the link 300 through the decelerator 200, and the link 300 pushes the shock absorber 400 so that the shock absorber 400 can push the body of the vehicle 10000, thereby reducing the vibration of the vehicle 10000, and thus, realizing the active shock absorbing function of the suspension system 1000.

Wherein, by providing the decelerator 200, the decelerator 200 can decelerate and increase the torque of the rotation output from the motor 100 for the suspension system, thereby allowing the link 300 to input enough torque, and allowing the link 300 to push the shock absorber 400.

According to the suspension system 1000 of the second aspect of the present utility model, by providing the motor 100 for a suspension system according to the first aspect of the present utility model described above, the active shock absorbing function of the suspension system 1000 can be achieved, and the stability and the mute performance of the suspension system 1000 during operation can be improved.

A vehicle 10000 according to an embodiment of the third aspect of the present utility model is described below with reference to fig. 1 to 8.

A vehicle 10000 according to an embodiment of the third aspect of the present utility model, as shown in fig. 1, includes a frame 2000 and the suspension system 1000 according to the second aspect of the present utility model described above, the suspension system 1000 being provided on the frame 2000.

According to the vehicle 10000 of the embodiment of the third aspect of the present utility model, by providing the suspension system 1000 according to the second aspect of the present utility model described above, stability and mute performance during running of the vehicle 10000 can be improved, thereby improving riding experience of passengers in the vehicle.

In some embodiments of the utility model, vehicle 10000 further includes a drive battery that can supply electric power required during operation to motor 100 for the suspension system, so that suspension system 1000 can operate normally.

The operation of the vehicle 10000 according to the embodiment of the present utility model is described below with reference to fig. 1 to 8.

Firstly, the vehicle 10000 is in a power-on state, the motor controller is subjected to self-checking after being electrified, the motor controller reads the rotation angle information of the rotor assembly 30 when the motor 100 for the suspension system finishes working last time, which is recorded by the rotary transformer 70, after the motor controller can normally read the data of the rotary transformer 70, the motor controller is in a preparation state.

During the running of the vehicle 10000, when the vehicle 10000 bumps, the motor controller transmits a work instruction to the motor 100 for the suspension system, the driving battery supplies current to the motor for the suspension system 1000, and the motor 100 for the suspension system drives the link 300 through the decelerator 200 to push the decelerator 200 upward so as to cancel the downward displacement of the vehicle body, thereby realizing the active shock absorbing function of the suspension system 1000.

During the operation of the motor 100 for the suspension system, the decelerator 200 applies a reaction force to the motor for the suspension system 1000, the motor controller determines whether the motor 100 for the suspension system is in a passive damping state, and when the motor 100 for the suspension system is not in the passive damping state, the motor 100 for the suspension system may normally operate or normally end operating, and when the motor 100 for the suspension system is in the passive damping state, the motor controller determines whether a back electromotive force generated by the passive damping is greater than a voltage of the driving battery, and when the back electromotive force generated by the passive damping is greater than the voltage of the driving battery, the back electromotive force generated by the dynamic damping charges the driving battery, and when the back electromotive force generated by the passive damping is less than the voltage of the driving battery, the back electromotive force is consumed in a form of resistance heating or stored in a capacitor in the motor 100 for the suspension system.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; the device can be mechanically connected, electrically connected and communicated; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (11)

1. An electric motor for a suspension system, comprising:

A housing having a receiving cavity therein;

the stator assembly is arranged in the accommodating cavity;

A rotor assembly disposed radially inward of the stator assembly, the rotor assembly comprising: the rotor comprises a rotor shaft, a rotor core and permanent magnets, wherein the rotor core is coaxially fixed with the rotor shaft, the permanent magnets are arranged on the outer peripheral surface of the rotor core, the number of the permanent magnets is multiple, the multiple permanent magnets are distributed along the axial direction of the rotor core, and at least two adjacent permanent magnets in the axial direction of the rotor core are staggered in the circumferential direction of the rotor core.

2. The motor for a suspension system according to claim 1, characterized in that the rotor core includes a plurality of rotor core layers arranged in a stacked manner in an axial direction of the rotor core, each of the rotor core layers being provided on an outer peripheral surface thereof with a plurality of the permanent magnets arranged at intervals in a circumferential direction of the rotor core.

3. The motor for a suspension system according to claim 2, wherein axially adjacent ones of the permanent magnets of the plurality of rotor core layers are sequentially staggered in a first direction in a circumferential direction of the rotor core in a direction from one axial end of the rotor core toward the other end; or alternatively, the first and second heat exchangers may be,

The rotor core comprises a plurality of oblique pole groups, each oblique pole group comprises a plurality of rotor core layers which are arranged in a stacked mode along the axial direction of the rotor core, in two adjacent oblique pole groups, the permanent magnets which are adjacent to each other in the axial direction of the rotor core layers in one oblique pole group are staggered and arranged in sequence along a first direction, the permanent magnets which are adjacent to each other in the axial direction of the rotor core layers in the other oblique pole group are staggered and arranged in sequence along a second direction, and the first direction and the second direction are two directions which are opposite to each other in the circumferential direction of the rotor core respectively.

4. The motor for a suspension system according to claim 1, wherein the rotor shaft is provided with a baffle plate and a pressing plate which are arranged at intervals in an axial direction of the rotor shaft, and the baffle plate and the pressing plate are respectively abutted against both end surfaces in the axial direction of the rotor core.

5. The motor for a suspension system according to claim 4, characterized in that the pressing plate is integrally formed with the rotor shaft, and the pressing plate is configured to abut against an end face of the rotor core after being folded outward in a radial direction of the rotor shaft.

6. The electric machine for a suspension system of claim 1 wherein the stator assembly includes a stator core and a stator winding, the stator winding being wound on the stator core and the stator winding being a concentrated winding.

7. The motor for a suspension system of claim 1, further comprising: the stator end plate is arranged in the shell and is arranged at least one end of the stator assembly in the axial direction, the stator end plate is a glue filling piece, an insulating piece and a heat radiating piece, and the shell and the stator assembly are connected into a whole through the stator end plate.

8. The motor for a suspension system of claim 1, further comprising:

A low voltage connector disposed on the housing for electrically connecting a low voltage harness; and/or the number of the groups of groups,

The high-voltage connector is arranged on the shell and used for electrically connecting a high-voltage wire harness.

9. The motor for a suspension system of claim 1, further comprising: and the rotary transformer is connected with the rotor assembly and used for detecting the rotation angle of the rotor assembly.

10. A suspension system comprising:

a motor for a suspension system according to any one of claims 1-9;

one end of the rotor shaft is connected with the speed reducer;

the connecting rod is connected between the speed reducer and the shock absorber.

11. A vehicle comprising a frame and the suspension system of claim 10, the suspension system being disposed on the frame.