阅读说明：本技术 一种驱动电机及车辆 (A kind of driving motor and vehicle ) 是由 王伟钢 孔庆波 邹亚群 徐郅 齐洪刚 于 2018-05-21 设计创作，主要内容包括：本发明公开了一种驱动电机及车辆,以改善车辆驱动电机的NVH性能。驱动电机包括定子和同轴套设于定子内的转子,其中：定子包括叠压的多个定子冲片以及嵌入多个定子冲片的多个定子绕组,定子冲片包括定子轭以及位于定子轭内侧且沿周向分布的多个定子齿,相邻定子齿之间形成齿槽,定子绕组位于齿槽内；转子包括叠压的多个转子冲片以及嵌入多个转子冲片的多个磁极组,多个磁极组沿周向分布,每个磁极组包括一对呈V形对称设置且开口朝向定子且极性相同的磁钢,相邻两个磁极组的极性相反；转子冲片的边缘对应各个N极磁极组分别设置有两个槽口,或者转子冲片的边缘对应各个S极磁极组分别设置有两个槽口。(The invention discloses a kind of driving motor and vehicles, to improve the NVH performance of vehicle traction motor.Driving motor includes the rotor of stator and coaxial sleeve in stator, wherein: stator includes multiple stator winding of the multiple stator punchings laminated and the multiple stator punchings of insertion, stator punching includes stator yoke and on the inside of the stator yoke and circumferentially distributed multiple stator tooths, tooth socket is formed between adjacent stators tooth, stator winding is located in tooth socket；Rotor includes multiple magnetic pole groups of the multiple rotor punchings laminated and the multiple rotor punchings of insertion, multiple magnetic pole groups are circumferentially distributed, each magnetic pole group includes a pair of V-shaped arranged symmetrically and is open towards stator and the identical magnet steel of polarity, and the polarity of two neighboring magnetic pole group is opposite；The edge of rotor punching, which corresponds to each pole N magnetic pole group and is respectively arranged with the edge of two notches or rotor punching, to be corresponded to each pole S magnetic pole group and is respectively arranged with two notches.)

1. a kind of driving motor, which is characterized in that the rotor being set to including stator and coaxial sleeve in stator, in which:

The stator includes multiple stator winding of the multiple stator punchings laminated and the multiple stator punching of insertion, described Stator punching includes stator yoke and the shape between stator yoke inside and circumferentially distributed multiple stator tooths, adjacent stators tooth At tooth socket, the stator winding is located in tooth socket；

The rotor includes multiple magnetic pole groups of the multiple rotor punchings laminated and the multiple rotor punching of insertion, described more A magnetic pole group is circumferentially distributed, each magnetic pole group include it is a pair of it is V-shaped be symmetrical arranged and be open towards stator and polarity it is identical The polarity of magnet steel, two neighboring magnetic pole group is opposite；

The edge of the rotor punching corresponds to each pole N magnetic pole group and is respectively arranged with two notches or the rotor punching Edge corresponds to each pole S magnetic pole group and is respectively arranged with two notches.

2. driving as described in claim 1 electronic, which is characterized in that the central angle etc. in described two notch relative rotors axle center Central angle in two stator tooth relative rotor axle center for being spaced a stator tooth.

3. driving motor as claimed in claim 1 or 2, which is characterized in that the width of the notch is opened not less than a tooth socket Mouth width degree, and no more than the sum of a tooth socket opening width and half of stator tooth width.

4. driving motor as claimed in claim 3, which is characterized in that the width of the notch is equal to a tooth socket opening width The sum of with half of stator tooth width.

5. driving motor as claimed in claim 1 or 2, which is characterized in that the edge of the rotor punching and stator punching it Between air gap meet: it is bigger further away from magnetic pole group symmetrical center line air gap.

6. driving motor as claimed in claim 1 or 2, which is characterized in that the notch is arc-shaped or V-arrangement in rounded corner.

7. driving motor as claimed in claim 1 or 2, which is characterized in that the stator tooth quantity is 48 or 72, the magnetic Pole group quantity is 8 groups or 12 groups.

8. driving motor as claimed in claim 1 or 2, which is characterized in that the rotor punching is in the multiple magnetic pole group Side offers circumferentially distributed multiple lightening holes.

9. a kind of vehicle, which is characterized in that including driving motor as described in any one of claims 1 to 8.

Technical field

The present invention relates to technical field of vehicle, more particularly to a kind of driving motor and vehicle.

Background technique

Automobile has greatly facilitated the development of human society, has been as modern civilization society efficiently transport facility People's lives, which are brought, to be greatly facilitated and conveniently.NVH (Noise, Vibration, Harshness) performance is to measure automobile One composite target of manufacturing quality, it is experienced as most directly and most surface to user vehicle.There is statistics to show, Vehicle is to have relationship with the NVH performance of vehicle, and there is nearly 20% R & D Cost consumption in each major company there are about 1/3 failure problems On the NVH for solving the problems, such as vehicle.

Therefore, the NVH performance for how improving vehicle traction motor, is a technical problem to be solved urgently.

Summary of the invention

The purpose of the embodiment of the present invention is that a kind of driving motor and vehicle are provided, to improve the NVH of vehicle traction motor Energy.

Driving motor provided by the embodiment of the present invention, the rotor being set to including stator and coaxial sleeve in stator, in which:

The stator includes multiple stator winding of the multiple stator punchings laminated and the multiple stator punching of insertion, The stator punching includes stator yoke and on the inside of the stator yoke and circumferentially distributed multiple stator tooths, adjacent stators tooth it Between form tooth socket, the stator winding is located in tooth socket；

The rotor includes multiple magnetic pole groups of the multiple rotor punchings laminated and the multiple rotor punching of insertion, institute It is circumferentially distributed to state multiple magnetic pole groups, each magnetic pole group includes a pair of V-shaped arranged symmetrically and is open towards stator and polarity phase Same magnet steel, the polarity of two neighboring magnetic pole group are opposite；

The edge of the rotor punching corresponds to each pole N magnetic pole group and is respectively arranged with two notches or rotor punching The edge of piece corresponds to each pole S magnetic pole group and is respectively arranged with two notches.

Preferably, the central angle in described two notch relative rotors axle center is equal to two stator tooths of one stator tooth in interval The central angle in relative rotor axle center.

Preferably, the width of the notch is not less than a tooth socket opening width, and it is not more than a tooth socket opening width The sum of with half of stator tooth width.

More preferably, the width of the notch is equal to the sum of a tooth socket opening width and half of stator tooth width.

Preferably, the air gap between the edge and stator punching of the rotor punching meets: further away from magnetic pole group it is symmetrical in Heart line air gap is bigger.

Optionally, the notch is arc-shaped or V-arrangement in rounded corner.

Optionally, the stator tooth quantity is 48 or 72, and the magnetic pole group quantity is 8 groups or 12 groups.

Preferably, the rotor punching offers circumferentially distributed multiple lightening holes on the inside of the multiple magnetic pole group.

Technical solution of the embodiment of the present invention inhibits the torque pulsation of driving motor by the irregular air-gap design such as notch, Harmonic content is reduced, vibration and noise is effectively reduced, improves the NVH performance of vehicle traction motor.

The embodiment of the present invention also provides a kind of vehicle, including driving motor described in aforementioned any technical solution.Due to driving The NVH performance of dynamic motor is improved, therefore performance is preferable when vehicle driving, and quality is higher.

Detailed description of the invention

Fig. 1 is the axial arrangement schematic diagram of one embodiment of the invention driving motor；

Fig. 2 is the partial enlargement diagram of Fig. 1；

Fig. 3 is the partial enlargement diagram of Fig. 1；

Fig. 4 a is torque curve of the prior art using the driving motor of even air gap design；

Fig. 4 b is the torque curve using the driving motor of embodiment illustrated in fig. 1 of the present invention design；

Fig. 5 a is Fourier frequency of the stator by radial electromagnetic force for the driving motor that the prior art uses even air gap design Spectrogram；

Fig. 5 b is Fourier of the stator by radial electromagnetic force of the driving motor designed using embodiment illustrated in fig. 1 of the present invention Spectrogram.

Appended drawing reference:

1- stator punching

2- rotor punching

3- stator winding

11- stator yoke

12- stator tooth

13- tooth socket

4- magnetic pole group

40- magnet steel

21- notch

22- lightening hole

Specific embodiment

For the NVH performance for improving vehicle traction motor, the embodiment of the invention provides a kind of driving motor and vehicles.To make The object, technical solutions and advantages of the present invention are clearer, and invention is further described in detail by the following examples.

As shown in Figure 1 to Figure 3, driving motor provided in an embodiment of the present invention, including stator and coaxial sleeve are set in stator Rotor, in which:

Stator includes the multiple stator punchings 1 laminated and is embedded in multiple stator winding 3 of multiple stator punchings 1 (in figure Only illustrate the stator winding 3 of partial amt), stator punching 1 includes stator yoke 11 and is located on the inside of stator yoke 11 and along week To multiple stator tooths 12 of distribution, tooth socket 13 is formed between adjacent stators tooth 12, stator winding 3 is located in tooth socket 13；

Rotor includes multiple magnetic pole groups 4 of the multiple rotor punchings 2 laminated and the multiple rotor punchings 2 of insertion, multiple magnetic Pole group 4 is circumferentially distributed, and each magnetic pole group 4 includes a pair of V-shaped arranged symmetrically and is open towards stator and the identical magnetic of polarity The polarity of steel 40, two neighboring magnetic pole group 4 is opposite；That is: two magnet steel 40 of magnetic pole group 4 are all the pole N magnet steel or are all the pole S magnetic Steel, the magnetic pole group adjacent with the pole N magnetic pole group are the pole S magnetic pole group, and the magnetic pole group adjacent with the pole S magnetic pole group is the pole N magnetic pole group；

As shown in Fig. 2, the edge of rotor punching 2, which corresponds to each pole N magnetic pole group, is respectively arranged with two notches 21.In addition, The edge for being also possible to rotor punching 2 corresponds to each pole S magnetic pole group and is respectively arranged with two notches.

Preferably, the central angle alpha of two 21 relative rotor axle center O of notch is equal to two stator tooths of one stator tooth in interval The central angle β of 12 relative rotor axle center O.

Optionally, 12 quantity of stator tooth is 48 or 72, and 4 quantity of magnetic pole group is 8 groups or 12 groups.In order to reduce driving motor Weight, reduces power consumption, and rotor punching 2 is also provided with circumferentially distributed multiple lightening holes 22 on the inside of multiple magnetic pole groups 4.

The concrete shape of notch 21 is unlimited, such as can be in arc shown in FIG. 1, in addition it is also possible to be in the V of rounded corner Shape, etc..

In addition, as shown in figure 3, in the above-described embodiments, further, between the edge and stator punching 1 of rotor punching 2 Air gap meet: it is bigger further away from 4 symmetrical center line air gap of magnetic pole group, as shown in A in figure, it may be assumed that 2 edge of rotor punching use Eccentric arc design.

Due to being provided with tooth socket on stator punching, such as 48 tooth sockets are provided with, lead to the torque curve or stator of driving motor There is the cyclic fluctuation as caused by tooth socket in suffered radial electromagnetic force curve, the period of the fluctuation is the 48 of basic speed-frequency Times, i.e. 48 order frequencies, the appearance of 48 order frequency causes driving motor to generate oneself intrinsic 48 ranks, 96 ranks and 24 rank noises. Therefore, inhibit the energy under 48 rank of driving motor, 96 ranks and 24 order frequencies that can improve the NVH performance of motor.

Technical solution of the embodiment of the present invention is by the design of the shapes such as notch and eccentric arc, so that rotor punching and stator rush Irregular air gap, i.e. non-uniform gap are formed between piece, when the rotation of rotor relative stator, can be generated in air gap similar to just The excitation field of string distribution, to inhibit tooth socket harmonic wave, reach torque pulsation inhibited and inhibit radial electromagnetic force on stator tooth humorous The effect of wave, it is final to realize the purpose for inhibiting electromagnetic noise.

In addition, as shown in Fig. 2, present inventor obtains after many experiments and simulation calculation, the width of notch 21 Spend s and be not less than a 13 opening width a of tooth socket, and no more than a 13 opening width a of tooth socket and half 12 width b of stator tooth it And when, the irregular air-gap design between rotor punching 2 and stator punching 1 is relatively reasonable, inhibits electromagnetic noise effect obvious.In In one preferred embodiment, the width s of notch is equal to the sum of a tooth socket opening width a and half of stator tooth width b.

As shown in figures 4 a and 4b, wherein Fig. 4 a is torque of the prior art using the driving motor of even air gap design Curve, Fig. 4 b are the torque curve using the driving motor of embodiment illustrated in fig. 1 of the present invention design.Comparing two figures can be seen that The torque pulsation of driving motor of the embodiment of the present invention reduces 50% or more.

As shown in figure 5 a and 5b, wherein Fig. 5 a is stator of the prior art using the driving motor of even air gap design By the Fourier spectrum of radial electromagnetic force, Fig. 5 b be using embodiment illustrated in fig. 1 of the present invention design driving motor stator by The Fourier spectrum of radial electromagnetic force.Comparing two figures can be seen that the stator of driving motor of the embodiment of the present invention by radial electromagnetism 48 order components of power can reduce 35%, and 96 order components can reduce 10%.

To sum up, technical solution of the embodiment of the present invention inhibits the torque of driving motor by the irregular air-gap design such as notch Pulsation reduces harmonic content, effectively reduces vibration and noise, improves the NVH performance of vehicle traction motor.

The embodiment of the present invention also provides a kind of vehicle, the driving motor including aforementioned any technical solution.Due to driving electricity The NVH performance of machine is improved, therefore performance is preferable when vehicle driving, and quality is higher.

Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies Within, then the present invention is also intended to include these modifications and variations.