CN117498590A - Motor and vehicle - Google Patents

Abstract

The application discloses motor and vehicle belongs to vehicle technical field. The motor includes a housing and a stator mounted within the housing. The outer wall of stator is equipped with at least one first oil groove, and first oil groove extends along the circumference of stator, and the opening of first oil groove is towards the inner wall of casing. The shell is provided with at least one first oil way, the oil inlet end of the first oil way is suitable for being communicated with an oil storage part storing cooling oil, and the oil outlet end of the first oil way is communicated with at least one first oil groove. By adopting the technical scheme provided by the embodiment of the application, the motor temperature can be prevented from being too high.

Description

Motor and vehicle

Technical Field

The application relates to the technical field of vehicles, in particular to a motor and a vehicle.

Background

With increasing importance of environmental protection and sustainable development, new energy vehicles have gradually become an important component of the modern traffic field. One or more electric machines are typically configured in a new energy vehicle to provide power to drive the vehicle. When the motor is in a working state, the electric energy can be converted into mechanical energy and heat energy, wherein the mechanical energy can be used for driving a vehicle to run and is useful work. The heat energy is idle work, and the continuously accumulated heat energy can influence the efficiency of the motor, so that the pure electric driving mileage of the vehicle can be reduced. And, the accumulation of sustained high heat can present a significant challenge to the motor insulation system, thereby affecting the service life of the motor.

In the related art, when the temperature of the motor exceeds a certain temperature, the output capacity of the motor is limited, namely, the output torque of the motor is limited, so that the temperature of the motor is controlled and protected. However, this is likely to cause a shortage of power during running of the vehicle, which makes normal running impossible.

Disclosure of Invention

In view of this, the present application provides a motor and a vehicle, which can avoid the motor temperature from being too high.

In one aspect, embodiments of the present application provide an electric machine comprising a housing and a stator mounted within the housing;

the outer wall of the stator is provided with at least one first oil groove, the first oil groove extends along the circumferential direction of the stator, and an opening of the first oil groove faces the inner wall of the shell;

the shell is provided with at least one first oil way, the oil inlet end of the first oil way is suitable for being communicated with an oil storage part storing cooling oil, and the oil outlet end of the first oil way is communicated with at least one first oil groove.

Optionally, the outer wall of stator is equipped with a plurality of first oil groove, a plurality of first oil groove is followed the circumference of stator communicates in proper order.

Optionally, the first oil groove comprises a first groove wall, and the first groove wall is close to the first end of the shell;

the first slot wall is provided with at least one first opening, and the first opening extends from the first slot wall to the first end of the shell in parallel to the axial direction of the stator to form a second oil groove.

Optionally, the first oil groove includes a second groove wall, the second groove wall is disposed opposite to the first groove wall, the second groove wall is close to the second end of the housing, and the first end of the housing is opposite to the second end of the housing;

the second groove wall is provided with at least one second opening, and the second opening extends from the second groove wall to the second end of the shell in parallel to the axial direction of the stator to form a third oil groove.

Optionally, the first openings and the second openings are disposed in one-to-one opposite to each other in an axial direction of the stator.

Optionally, the first openings and the second openings are staggered one by one in the axial direction of the stator.

Optionally, the motor further comprises a rotating shaft and a rotor;

the rotor is sleeved on the rotating shaft, the rotor is positioned in the stator, and the rotating shaft, the rotor and the stator are coaxial;

the rotating shaft is of a hollow structure, a plurality of first oil holes are formed in the inner wall of the rotating shaft, and the first oil holes extend to the outer wall of the rotating shaft along the radial direction of the rotating shaft to form a second oil path;

the cooling oil flows out from the inside of the rotating shaft to the outside of the rotating shaft through the second oil way.

Optionally, the motor further comprises at least one oil ring sleeved on at least one end of the stator;

the end face of one end of the oil ring is propped against the end face of the stator, part of the outer wall of the other end of the oil ring is propped against the inner wall of the shell, and an annular cavity is formed by the outer wall of the oil ring, which is not propped against the inner wall of the shell, part of the end face of the stator and the inner wall of the shell;

the inner wall of the oil ring is provided with a plurality of second oil holes, and the second oil holes extend to the outer wall of the oil ring along the radial direction of the oil ring to form a third oil way;

the annular cavity is respectively communicated with the second oil groove and the third oil way; and/or the annular cavity is respectively communicated with the third oil groove and the third oil way.

Optionally, the motor further comprises at least one first sealing ring and at least one second sealing ring;

the first end face of the first sealing ring abuts against the end face, close to the stator, of the oil ring, the second end face of the first sealing ring abuts against the end face, close to the oil ring, of the stator, and the first end face and the second end face are opposite;

the inner wall of the second sealing ring abuts against a part of the outer wall of the oil ring, which is far away from the stator, and the outer wall of the second sealing ring abuts against the inner wall of the shell.

In another aspect, embodiments of the present application further provide a vehicle including the electric machine of any one of the above.

The motor that this application embodiment provided includes casing and stator, and the casing cover is established on the stator, and when the motor was in operating condition, the stator can not rotate. The outer wall of stator is equipped with at least one first oil groove, and first oil groove extends along the circumference of stator, and the opening of first oil groove is towards the inner wall of casing. The casing is equipped with at least one first oil circuit, and the oil feed end of first oil circuit is suitable for and stores oily spare intercommunication, the oil outlet end of first oil circuit with at least one first oil groove intercommunication, the oily spare is suitable for the storage cooling oil. Through this kind of setting, the cooling oil can follow the oil storage spare and flow to first oil circuit, and then flow into first oil groove again, because first oil groove is along the circumference extension of stator, consequently the cooling oil in the first oil groove can be along the circumference diffusion of stator, and then can take away certain heat on the stator to can in time dispel the heat to the stator, reduce the temperature of stator. That is, the stator can be cooled in time, the temperature of the motor is reduced, and the motor is prevented from being too high in temperature, so that the motor can be ensured to keep a normal working state.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of an electric motor according to an embodiment of the present application;

FIG. 2 is a schematic cross-sectional view of an electric motor provided in an embodiment of the present application;

fig. 3 is a schematic partial cross-sectional view of an electric motor according to an embodiment of the present application.

Reference numerals:

100. a housing; 110. a first oil passage;

200. a stator; 210. a first oil groove; 211. a first groove wall; 212. a second groove wall; 2111. a first opening; 2121. a second opening; 220. a second oil groove; 230. a third oil groove; 240. a body portion; 250. a boss; 260. a fourth oil groove;

300. a rotating shaft; 310. a first oil hole; 320. a second oil path;

400. a rotor; 410. a third oil hole; 420. a fourth oil passage;

510. a second oil hole; 520. a third oil passage; 530. a first oil ring; 540. a second oil ring;

600. an annular cavity;

700. a first seal ring;

800. and a second seal ring.

Specific embodiments thereof have been shown by way of example in the drawings and will herein be described in more detail. These drawings and the written description are not intended to limit the scope of the inventive concepts in any way, but to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

Unless defined otherwise, all technical terms used in the examples of the present application have the same meaning as commonly understood by one of ordinary skill in the art.

In order to make the technical solution and advantages of the present application more apparent, the embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

As shown in conjunction with fig. 1 to 3, the embodiment of the present application provides a motor including a housing 100 and a stator 200, the stator 200 being installed in the housing 100.

The outer wall of the stator 200 is provided with at least one first oil groove 210, the first oil groove 210 extending in the circumferential direction of the stator 200, the opening of the first oil groove 210 facing the inner wall of the housing 100. The housing 100 is provided with at least one first oil passage 110, an oil inlet end of the first oil passage 110 is adapted to communicate with an oil reservoir storing cooling oil, and an oil outlet end of the first oil passage 110 communicates with at least one first oil groove 210.

It should be noted that, with the above arrangement, the cooling oil may flow from the oil storage member to the first oil path 110 and then flow into the first oil groove 210, and since the first oil groove 210 extends along the circumferential direction of the stator 200, the cooling oil in the first oil groove 210 may diffuse along the circumferential direction of the stator 200 and further may take away a certain amount of heat on the stator 200, so as to dissipate heat of the stator 200 in time and reduce the temperature of the stator 200. That is, the stator 200 can be cooled in time, the temperature of the motor can be reduced, and the motor can be prevented from being excessively high, so that the motor can be ensured to maintain a normal working state.

The components and functions of the motor according to the embodiments of the present application will be described in more detail with reference to fig. 1 to 3.

As shown in fig. 1, in some embodiments, the outer wall of the stator 200 is provided with a plurality of first oil grooves 210, and the plurality of first oil grooves 210 are sequentially communicated in the circumferential direction of the stator 200. When the cooling oil flows into any one of the first oil grooves 210 from the first oil passage 110, the cooling oil can flow into other first oil grooves 210 in sequence along the circumferential direction, so that the circumferential outer wall of the stator 200 can be cooled, the temperature of the stator 200 can be reduced, the motor temperature is prevented from being too high, and the motor can be ensured to maintain a normal working state.

In some embodiments, the plurality of first oil grooves 210 are spirally arranged along the circumference of the outer wall of the stator 200 and the plurality of first oil grooves 210 are sequentially communicated. Since the plurality of first oil grooves 210 spirally arranged along the circumferential direction of the outer wall of the stator 200 are also distributed along the axial direction of the stator 200, the cooling oil can flow not only along the circumferential direction of the stator 200 but also along the axial direction of the cooling oil, so that the cooling speed of the stator 200 can be accelerated, that is, the cooling efficiency of the motor can be improved.

In other embodiments, the plurality of first oil grooves 210 are arranged along the circumference of the outer wall of the stator 200 and the plurality of first oil grooves 210 are sequentially communicated. By the arrangement, cooling oil can flow into the adjacent first oil grooves 210 from one first oil groove 210 along the circumference in sequence, so that the temperature of the stator 200 can be reduced in time, overhigh temperature of the motor is avoided, and the motor is ensured to keep a normal working state.

It should be noted that, the plurality of first oil grooves 210 are sequentially communicated, and the end surfaces of the plurality of first oil grooves 210 may be sequentially abutted against each other to achieve communication, or the end surfaces of the plurality of first oil grooves 210 are opposite and have a preset interval. Fig. 1 is a schematic view showing that end surfaces of a plurality of first oil grooves 210 arranged along the circumference of an outer wall of a stator 200 are opposite and have a predetermined interval.

As shown in fig. 1, in some embodiments, when the end surfaces of the plurality of first oil grooves 210 are opposite and have a preset interval, the outer wall of the stator 200 is provided with a fourth oil groove 260 at the preset interval, and the fourth oil groove 260 extends from the first end of the stator 200 to the second end of the stator 200 in the axial direction of the stator 200. The sidewall of the fourth oil groove 260 communicates with the sidewall of the first oil groove 210 so that the cooling oil in the first oil groove 210 may flow into the fourth oil groove 260 and thus flow in the axial direction of the stator 200. So set up, the cooling oil can cool down the outer wall of stator 200 along fourth oil groove 260, and then has played better cooling effect to the motor.

As shown in fig. 1, in some embodiments, the first oil groove 210 includes a first groove wall 211, the first groove wall 211 being proximate to the first end of the housing 100. The first groove wall 211 is provided with at least one first opening 2111, and the first opening 2111 extends from the first groove wall 211 toward the first end of the housing 100 in parallel to the axial direction of the stator 200, forming the second oil groove 220. So set up, the cooling oil that flows into in the first oil groove 210 can also flow into the second oil groove 220 through the first opening 2111, because the second oil groove 220 is along the axial extension of the stator 200, therefore the cooling oil can more rapidly distribute at the axial outer wall of the stator 200, and flow towards the first end of the shell 100, so as to cool the axial outer wall of the stator 200, thereby further improving the cooling speed of the stator 200, that is, accelerating the cooling speed of the motor, and avoiding the situation that the motor cannot work normally due to overhigh temperature.

As shown in fig. 1, in some embodiments, the first oil groove 210 includes a second groove wall 212, the second groove wall 212 being disposed opposite the first groove wall 211, the second groove wall 212 being proximate to the second end of the housing 100, the first end of the housing 100 being opposite the second end of the housing 100. The second groove wall 212 is provided with at least one second opening 2121, and the second opening 2121 extends from the second groove wall 212 toward the second end of the housing 100 in parallel to the axial direction of the stator 200, forming a third oil groove 230. So set up, the cooling oil that flows into in the first oil groove 210 can also flow into the third oil groove 230 through the second opening 2121, because the third oil groove 230 is along the axial extension of the stator 200, the cooling oil can more rapidly distribute on the axial outer wall of the stator 200 and flow towards the second end of the shell 100, so as to cool the axial outer wall of the stator 200, thereby further improving the cooling speed of the stator 200, that is, accelerating the cooling speed of the motor, and avoiding the situation that the motor cannot work normally due to overhigh temperature.

As shown in fig. 1, in some embodiments, the first openings 2111 and the second openings 2121 are disposed one-to-one opposite in the axial direction of the stator 200. So that the cooling oil in the first oil groove 210 can flow into the second oil groove 220 and the third oil groove 230 through the first opening 2111 and the second opening 2121, respectively, to accelerate the cooling speed of the stator 200, i.e., to increase the cooling speed of the motor.

In some embodiments, the first openings 2111 and the second openings 2121 are staggered one-to-one in the axial direction of the stator 200. It should be noted that, since the first opening 2111 and the second opening 2121 are offset, it is ensured that a part of the cooling oil may flow from the first oil groove 210 into the second oil groove 220 through the first opening 2111, and another part of the cooling oil flows into the third oil groove 230 through the second opening 2121 after flowing a certain distance in the circumferential direction. Thereby, the length of the cooling oil flow path can be increased to sufficiently cool the outer wall of the stator 200, thereby achieving a better cooling effect.

As shown in connection with fig. 1 and 2, in some embodiments, the motor further includes a shaft 300 and a rotor 400. The rotor 400 is sleeved on the rotating shaft 300, the rotor 400 is positioned inside the stator 200, and the rotating shaft 300, the rotor 400 and the stator 200 are coaxial. The rotating shaft 300 has a hollow structure, and a plurality of first oil holes 310 are formed in the inner wall of the rotating shaft 300, and the first oil holes 310 extend to the outer wall of the rotating shaft 300 along the radial direction of the rotating shaft 300 to form a second oil path 320. The cooling oil flows out from the inside of the rotating shaft 300 to the outside of the rotating shaft 300 through the second oil passage 320. It should be noted that, part of the cooling oil in the oil storage member may be introduced into the rotating shaft 300 from the end portion of the rotating shaft 300, so that the cooling oil may flow into the second oil path 320 from the interior of the rotating shaft 300 through the first oil hole 310, and then flow out of the second oil path 320 to the exterior of the rotating shaft 300, so as to achieve a cooling effect on the inner walls of the rotor 400 and the stator 200. It will be appreciated that when the motor is in operation, the shaft 300 and the rotor 400 are in synchronous rotation, so that the cooling oil can flow out of the second oil path 320 and be thrown toward the stator 200, thereby cooling the inner wall of the stator 200.

In some embodiments, the motor further includes windings (not shown) located between the stator 200 and the rotor 400. It is understood that the cooling oil flowing out of the second oil path 320 may sequentially flow to the rotor 400, the windings, and the stator 200 to cool the inner walls of the rotor 400, the windings, and the stator 200, respectively, so that the cooling effect and the cooling speed of the motor may be improved.

As shown in fig. 2, in some embodiments, the rotor 400 is sleeved on a portion of the outer wall of the rotating shaft 300, and the first oil hole 310 is disposed at a portion of the rotating shaft 300 that is not in contact with the rotor 400. So set up, the cooling oil that throws away from second oil circuit 320 can be direct with the inner wall contact of winding and stator 200 to accelerated the cooling rate to the inner wall of stator 200, also can cool off the winding, and then accelerated cooling rate and the cooling effect to the motor.

As shown in fig. 2, in some embodiments, the inner wall of the rotor 400 is provided with a plurality of third oil holes 410, and the third oil holes 410 extend to the outer wall of the rotor 400 in the radial direction of the rotor 400, forming a fourth oil passage 420, and the fourth oil passage 420 communicates with the second oil passage 320. Therefore, the cooling oil thrown out from the second oil path 320 not only can flow along the gap between the rotor 400 and the rotating shaft 300 to cool the inner wall of the rotor 400, but also can be thrown out from the fourth oil path 420 to the outside of the rotor 400, so that the outer wall of the rotor 400, the windings and the stator 200 can be cooled, the motor can be fully cooled, and the cooling speed and the cooling effect of the motor are improved.

As shown in connection with fig. 1-3, in some embodiments, the motor further includes at least one oil ring that is sleeved on at least one end of the stator 200. The end face of one end of the oil ring abuts against the end face of the stator 200, a part of the outer wall of the other end of the oil ring abuts against the inner wall of the housing 100, and the outer wall of the oil ring which does not abut against the inner wall of the housing 100, a part of the end face of the stator 200, and the inner wall of the housing 100 form an annular cavity 600. The inner wall of the oil ring is provided with a plurality of second oil holes 510, and the second oil holes 510 extend to the outer wall of the oil ring in the radial direction of the oil ring to form a third oil path 520. The annular cavity 600 is respectively communicated with the second oil groove 220 and the third oil path 520; and/or, the annular cavity 600 communicates with the third oil groove 230 and the third oil passage 520, respectively. The portion of the outer wall of the other end of the oil ring abutting against the inner wall of the housing 100 means that the portion of the outer wall of the other end of the oil ring abuts against the inner wall of the housing 100 in the circumferential direction. So arranged, the cooling oil in the second oil groove 220 and/or the third oil groove 230 may flow into the third oil passage 520 and flow out from the second oil hole 510 to the outer wall of the end portion of the stator 200 to sufficiently cool the end portion of the stator 200, thereby further improving the cooling rate of the stator 200, i.e., the motor.

As shown in fig. 3, in some embodiments, the stator 200 includes a body portion 240 and a boss 250, one end of the boss 250 being connected to the body portion 240, the other end of the boss 250 extending in a direction away from the body portion 240. The oil ring is sleeved on the outer wall of at least one end of the body 240. The end surface of one end of the oil ring abuts against a part of the end surface of the boss 250, and the outer wall of the other end of the oil ring abuts against the inner wall of the housing 100. The outer wall of the oil ring, which does not abut against the inner wall of the housing 100, the end surface of the boss 250, which is directed from the outer wall of the oil ring to the inner wall of the housing 100, and the inner wall of the housing 100 form an annular cavity 600. It is understood that the cooling oil flowing out of the third oil passage 520 can sufficiently cool the outer walls of both ends of the body portion 240, so that the cooling effect and the cooling rate of the stator 200 can be improved.

As shown in connection with fig. 1-3, in some embodiments, the motor includes a first oil ring 530, the first oil ring 530 is sleeved on an outer wall of the body portion 240 near the first end of the housing 100, an end surface of the first oil ring 530 facing away from the first end of the housing 100 abuts against an end surface of the boss 250 near the first end of the housing 100, and a portion of an outer wall of the first oil ring 530 near the first end of the housing 100 abuts against an inner wall of the housing 100. Wherein the outer wall of the first oil ring 530, which does not abut against the inner wall of the housing 100, is recessed in a direction away from the inner wall of the housing 100, and the annular cavity 600 is formed by the outer wall of the first oil ring 530, which does not abut against the inner wall of the housing 100, the end surface of the boss 250, which is directed from the outer wall of the first oil ring 530 to the inner wall of the housing 100, and the inner wall of the housing 100.

As shown in connection with fig. 1-3, in some embodiments, the motor further includes a second oil ring 540, the second oil ring 540 is sleeved on an outer wall of the body portion 240 near the second end of the housing 100, an end surface of the second oil ring 540 facing away from the second end of the housing 100 abuts against an end surface of the boss 250 near the second end of the housing 100, and a portion of an outer wall of the second oil ring 540 near the second end of the housing 100 abuts against an inner wall of the housing 100. Wherein the outer wall of the second oil ring 540, which does not abut against the inner wall of the housing 100, is recessed in a direction away from the inner wall of the housing 100, and the annular cavity 600 is formed by the outer wall of the second oil ring 540, which does not abut against the inner wall of the housing 100, the end surface of the boss 250, which is directed from the outer wall of the second oil ring 540 to the inner wall of the housing 100, and the inner wall of the housing 100.

As shown in connection with fig. 2 and 3, in some embodiments, the motor further comprises at least one first seal ring 700 and at least one second seal ring 800. The first end face of the first seal ring 700 abuts against the end face of the oil ring near the stator 200, the second end face of the first seal ring 700 abuts against the end face of the stator 200 near the oil ring, and the first end face and the second end face are opposite. The inner wall of the second seal ring 800 abuts against a portion of the outer wall of the oil ring remote from the stator 200, and the outer wall of the second seal ring 800 abuts against the inner wall of the housing 100. By providing the first seal ring 700 and the second seal ring 800, the sealing property between the contact surfaces of the housing 100, the stator 200, and the oil ring can be improved, and thus it can be ensured that the cooling oil in the annular cavity 600 can flow out from the second oil hole 510 to the end portion of the stator 200, thereby improving the cooling rate and the cooling effect for the stator 200.

As shown in connection with fig. 2 and 3, in some embodiments, a first end face of the first seal ring 700 abuts an end face of the first oil ring 530 proximate to the boss 250, and a second end face of the first seal ring 700 abuts an end face of the boss 250 proximate to the first oil ring 530, the first end face being opposite the second end face. The inner wall of the second seal ring 800 abuts against a portion of the outer wall of the first oil ring 530 remote from the boss 250, and the outer wall of the second seal ring 800 abuts against the inner wall of the first end of the housing 100. So that the first seal ring 700, the second seal ring 800, the boss 250, and the housing 100 can form an annular cavity 600 with a high seal between the contact surfaces.

As shown in connection with fig. 2 and 3, in some embodiments, a first end face of the first seal ring 700 abuts an end face of the second oil ring 540 proximate to the boss 250, and a second end face of the second seal ring 800 abuts an end face of the boss 250 proximate to the second oil ring 540, the first end face being opposite the second end face. The inner wall of the second seal ring 800 abuts against a portion of the outer wall of the second oil ring 540 remote from the boss 250, and the outer wall of the second seal ring 800 abuts against the inner wall of the second end of the housing 100. So that the first seal ring 700, the second seal ring 800, the boss 250, and the housing 100 can form an annular cavity 600 with a high seal between the contact surfaces.

By providing the first seal ring 700 and the second seal ring 800 that are fitted to each other on both sides of the stator 200, the sealability between the contact surfaces of the first seal ring 700, the second seal ring 800, the stator 200, the housing 100, the first oil ring 530, and the second oil ring 540 can be improved, and the cooling oil can be ensured to flow out of the second oil hole 510 through the third oil passage 520 to cool both ends of the stator 200. Therefore, the cooling speed and the cooling effect of the stator 200 can be improved, and the phenomenon that the motor cannot work normally due to overhigh temperature is avoided.

Taking a motor with a diameter of 220mm and a power of 200KW as an example, the number of the first oil grooves 210 and the second oil grooves 220 may be 60 to 80, and the width of the first oil grooves 210 and the width of the second oil grooves 220 may be 3 to 4mm, respectively. The diameter of the opening at the end of the rotating shaft can be 4 mm-6 mm. The diameter of the second oil hole 510 may be 3mm to 4mm. The flow rate of the cooling oil flowing from the first oil passage 110 to the stator 200 may be 9L/min to 11L/min. The flow rate of the cooling oil flowing in from the end of the rotating shaft 300 may be 2L/min to 3L/min. Since the flow rate of the cooling oil flowing into the stator 200 is generally smaller than the flow rate of the cooling oil flowing in from the end portion of the rotating shaft 300, it is possible to avoid a decrease in the overall efficiency of the motor by increasing the drag torque of the rotor 400, and also to sufficiently cool the stator 200, which is a main heat generating source of the motor. The size of each oil hole, the size of the oil groove or the flow of cooling oil can be confirmed according to the flow field simulation and the temperature field simulation of different motors, and then the manufactured objects can be verified. If a plurality of thermocouples can be arranged on the winding, the electric drive system assembly is operated on the rack, and the temperature rise condition of each thermocouple under different rotating speeds and torques is detected, so that the final design of all parts such as an oil ring, an oil way, an oil groove and the like is supported, and proper cooling oil flow is matched.

Adopt the motor that this application embodiment provided, through setting up different oil grooves or oil circuit, so that the cooling oil flows in, cool down to the inner wall of stator 200 respectively, the outer wall of stator 200 and stator 20 in the ascending different regions of axle, thereby can play abundant cooling and rapid cooling's effect to stator 200, and then can not only improve the cooling efficiency to the motor, can also improve the cooling effect to the motor, ensure can fully cool down to the motor, in order to avoid the condition that the motor appears because of the too high temperature and can't work.

On the other hand, the embodiment of the application also provides a vehicle, and the vehicle comprises the motor provided by any one of the embodiments of the application. It should be noted that, the motor in the embodiment of the present application is the same as the component parts and the functions of each part of the motor provided in the embodiment of the present application, so that the embodiment of the present application is not repeated herein. Because this motor can in time cool off stator 200, reduce the temperature of motor, avoid the motor temperature too high, consequently can ensure that the motor keeps normal operating condition to the motor can provide power to the vehicle that is traveling, in order to guarantee the normal travel of vehicle.

Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the present application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the application following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the application pertains. The specification and examples are to be regarded in an illustrative manner only.

It is to be understood that the present application is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims (10)

1. An electric machine, characterized in that it comprises a housing (100) and a stator (200), said stator (200) being mounted inside said housing (100);

the outer wall of the stator (200) is provided with at least one first oil groove (210), the first oil groove (210) extends along the circumferential direction of the stator (200), and an opening of the first oil groove (210) faces the inner wall of the shell (100);

the shell (100) is provided with at least one first oil way (110), the oil inlet end of the first oil way (110) is suitable for being communicated with an oil storage part storing cooling oil, and the oil outlet end of the first oil way (110) is communicated with at least one first oil groove (210).

2. The electric machine according to claim 1, characterized in that the outer wall of the stator (200) is provided with a plurality of the first oil grooves (210), the plurality of the first oil grooves (210) being sequentially communicated in the circumferential direction of the stator (200).

3. The electric machine of claim 1, wherein the first oil sump (210) comprises a first sump wall (211), the first sump wall (211) being proximate a first end of the housing (100);

the first groove wall (211) is provided with at least one first opening (2111), and the first opening (2111) extends from the first groove wall (211) to the first end of the housing (100) in parallel to the axial direction of the stator (200) to form a second oil groove (220).

4. A machine according to claim 3, wherein the first oil groove (210) comprises a second groove wall (212), the second groove wall (212) being arranged opposite the first groove wall (211), the second groove wall (212) being close to a second end of the housing (100), the first end of the housing (100) being opposite the second end of the housing (100);

the second groove wall (212) is provided with at least one second opening (2121), and the second opening (2121) extends from the second groove wall (212) to the second end of the shell (100) in parallel to the axial direction of the stator (200) to form a third oil groove (230).

5. The electric machine according to claim 4, characterized in that the first opening (2111) and the second opening (2121) are arranged one-to-one opposite in the axial direction of the stator (200).

6. The electric machine of claim 4, wherein the first openings (2111) and the second openings (2121) are staggered one by one in an axial direction of the stator (200).

7. The electric machine of claim 4, further comprising a shaft (300) and a rotor (400);

the rotor (400) is sleeved on the rotating shaft (300), the rotor (400) is positioned in the stator (200), and the rotating shaft (300), the rotor (400) and the stator (200) are coaxial;

the rotating shaft (300) is of a hollow structure, a plurality of first oil holes (310) are formed in the inner wall of the rotating shaft (300), and the first oil holes (310) extend to the outer wall of the rotating shaft (300) along the radial direction of the rotating shaft (300) to form a second oil path (320);

the cooling oil flows out from the inside of the rotating shaft (300) to the outside of the rotating shaft (300) through the second oil path (320).

8. The electric machine according to claim 7, characterized in that it further comprises at least one oil ring (510, 520), said oil ring (510, 520) being sleeved on at least one end of said stator (200);

an end face of one end of the oil ring (510, 520) abuts against an end face of the stator (200), a part of an outer wall of the other end of the oil ring (510, 520) abuts against an inner wall of the housing (100), and an annular cavity (600) is formed by an outer wall of the oil ring (510, 520) which does not abut against the inner wall of the housing (100), a part of the end face of the stator (200), and the inner wall of the housing (100);

the inner wall of the oil ring (510, 520) is provided with a plurality of second oil holes (510), and the second oil holes (510) extend to the outer wall of the oil ring (510, 520) along the radial direction of the oil ring (510, 520) to form a third oil path (520);

the annular cavity (600) is respectively communicated with the second oil groove (220) and the third oil way (520); and/or, the annular cavity (600) is respectively communicated with the third oil groove (230) and the third oil path (520).

9. The electric machine according to claim 8, characterized in that it further comprises at least one first sealing ring (700) and at least one second sealing ring (800);

a first end surface of the first sealing ring (700) abuts against an end surface of the oil ring (510, 520) close to the stator (200), a second end surface of the first sealing ring (700) abuts against an end surface of the stator (200) close to the oil ring (510, 520), and the first end surface is opposite to the second end surface;

an inner wall of the second seal ring (800) abuts against a portion of an outer wall of the oil ring (510, 520) remote from the stator (200), and an outer wall of the second seal ring (800) abuts against an inner wall of the housing (100).

10. A vehicle comprising the electric machine according to any one of claims 1 to 9.