CN211127407U - Motor and have its car - Google Patents

Abstract

The application provides a motor and an automobile with the same, and the motor comprises a shell, wherein a stator assembly is arranged in the shell and comprises a stator core; the inner surface of the shell is provided with a first cooling groove and a second cooling groove which are communicated with each other; the first cooling groove is circumferentially arranged around the central axis of the stator core; the second cooling groove extends along the direction of a central shaft axis of the stator core, and two ends of the second cooling groove respectively extend to two ends of the stator core; the shell is provided with a stator oil inlet which is used for guiding cooling oil to enter the first cooling groove; the end part of the stator core is provided with an end part coil wound by a stator coil; the second cooling slot extends to an end of the stator core. According to the motor of this application, the cooling effect is good, and does not influence the motor performance.

Description

Motor and have its car

Technical Field

The application belongs to the technical field of motors, and particularly relates to a motor and an automobile with the same.

Background

At present, a main drive motor is a power output unit of a new energy automobile, and is a most core component of the new energy automobile, particularly a pure electric automobile, rather than an engine of a traditional fuel vehicle.

However, the current main drive motor has limited water cooling effect, and the adoption of the filling heat conduction material to improve the heat transfer efficiency is generally limited by the material cost, the complex process and other factors, so that the main drive motor is not suitable for mass production. Therefore, at the present stage, the oil cooling technology is used most effectively, and most of the existing oil cooling schemes are that the oil path structure is complex, the processing process cost is increased, or the oil path structure is unreasonable, the cooling effect is limited, or the oil path occupies other part spaces, for example, in the prior art, the oil path is arranged at the yoke part of the stator, so that the magnetic circuit is influenced, the size of the stator is increased, and the oil cooling does not fully play the role.

Therefore, how to provide a motor with a cooling oil path which has a simple structure, does not affect the performance of the motor, and can cool the motor comprehensively becomes a problem which needs to be solved by the technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

Therefore, the technical problem that this application will be solved lies in providing a motor and have its car, and cooling oil circuit simple structure, do not influence the motor performance, and can cool off comprehensively.

In order to solve the above problems, the present application provides a motor, including a housing, a stator assembly disposed in the housing, the stator assembly including a stator core, a first cooling slot and a second cooling slot disposed on an inner surface of the housing, the first cooling slot and the second cooling slot being communicated with each other; the first cooling groove is circumferentially arranged around the central axis of the stator core; the second cooling groove extends along the axial direction of the stator core, a stator oil inlet is formed in the shell, and the stator oil inlet is used for guiding cooling oil to enter the first cooling groove; the end part of the stator core is provided with an end part coil wound by a stator coil; the second cooling slot extends to an end of the stator core.

Preferably, the motor further comprises a rotor core and a rotating shaft which are both arranged in the shell; the rotor iron core is sleeved outside the rotating shaft, the rotating shaft is internally of a hollow structure, a rotor oil inlet and a rotor oil outlet are formed in the rotating shaft, the rotor oil inlet is used for guiding cooling oil to enter the hollow structure, and the rotor oil outlet is used for guiding the cooling oil in the hollow structure to flow out;

and/or the central axis of the stator core is parallel to the horizontal plane; and/or the peripheral wall of the stator core is attached to the inner surface of the shell; and/or the first cooling slot is an annular groove circumferentially arranged around the central axis of the stator core.

Preferably, the inner surface of the housing is further provided with a plurality of protruding strips arranged at intervals along the circumferential direction of the stator core, each protruding strip extends along the axial direction of the stator core, and a second cooling groove is formed between every two adjacent protruding strips.

Preferably, the stator assembly is sleeved on the outer peripheral side of the rotor core, and the end of the rotor is provided with a rotor extrusion part; the rotor extrusion part is positioned on the inner circumferential side of the end part coil; an extrusion part oil inlet is formed in the rotor extrusion part and is communicated with the rotor oil outlet; an extrusion part oil channel is arranged in the rotor extrusion part; an extrusion part oil outlet is formed in the surface, close to the end part coil, of the rotor extrusion part; the oil outlet of the extrusion part corresponds to the position of the end part coil; the extrusion part oil inlet, the extrusion part oil passage and the extrusion part oil outlet are communicated in sequence.

Preferably, the end coils comprise a first end coil and a second end coil; the first end portion coil is arranged at the first end portion of the stator core, and the second end portion coil is arranged at the second end portion of the stator core.

Preferably, the rotor pressing part includes a first rotor pressing part; the first rotor extrusion part is arranged at the first end part of the rotor and corresponds to the position of a first end part coil; a first extrusion part oil inlet is formed in the first rotor extrusion part; the oil inlet of the first extrusion part is communicated with the oil outlet of the rotor; a first extrusion part oil channel is arranged in the first rotor extrusion part, and a first extrusion part oil outlet is arranged on the surface, close to the first end solenoid, of the first rotor extrusion part; the first extrusion part oil inlet, the first extrusion part oil channel and the first extrusion part oil outlet are communicated in sequence;

and/or the rotor pressing part comprises a second rotor pressing part; the second rotor extrusion part is arranged at the second end part of the rotor and corresponds to the position of the second end part line package in the circumferential direction; a second extrusion part oil inlet is formed in the second rotor extrusion part and is communicated with the rotor oil outlet; a second extrusion part oil channel is arranged in the second rotor extrusion part, and a second extrusion part oil outlet is arranged on the surface, close to the second end solenoid, of the second rotor extrusion part; the second extrusion part oil inlet, the second extrusion part oil channel and the second extrusion part oil outlet are communicated in sequence.

Preferably, the rotor oil outlet comprises a first rotor oil outlet; the first rotor oil outlet is communicated to the first extrusion part oil inlet;

and/or, the rotor oil outlet comprises a second rotor oil outlet; the oil outlet of the second rotor is communicated to the oil inlet of the second extrusion part.

Preferably, the rotor extrusion part is of an annular structure arranged around the circumference of the rotating shaft, and the inner circumferential wall of the rotor extrusion part is attached to the outer surface of the rotating shaft; the oil inlet of the extrusion part is formed in the inner peripheral wall of the rotor extrusion part and corresponds to the position of the oil outlet of the rotor in the axial direction and the circumferential direction; the extrusion portion oil channel is arranged inside the rotor extrusion portion, and the rotor extrusion portion oil outlet is arranged on the peripheral wall of the rotor extrusion portion.

Preferably, the rotor pressing portion comprises a first annular portion and a second annular portion which are coaxial, and the cross sections of the first annular portion and the second annular portion have the same inner diameter; the second annular part is arranged on the first end part of the first annular part, and the outer peripheral wall of the second annular part is positioned on the inner peripheral side of the outer peripheral wall of the first annular part; the inner peripheral walls of the first annular part and the second annular part are attached to the rotating shaft; the oil inlet of the extrusion part is arranged on the inner peripheral wall of the first annular part; the squeezing part oil outlet is arranged on the outer peripheral wall of the second annular part; the extrusion part oil passage comprises a first oil passage and a second oil passage which are communicated with each other, the first oil passage is arranged in the first annular part, and the second oil passage is arranged in the second annular part; the extrusion part oil inlet is communicated with the rotor oil outlet and the first oil duct; the extrusion part oil outlet is communicated to the second oil duct.

Preferably, an accommodating groove is formed in the connecting position of the extrusion part oil inlet and the extrusion part oil channel; the accommodating groove is communicated with the extrusion part oil inlet and the extrusion part oil passage;

and/or the extrusion oil outlet is arranged in a plurality of numbers, and the extrusion oil outlets are arranged circumferentially around the rotating shaft.

Preferably, the motor further includes a spacer provided at one end of the stator core, and the spacer is located at an outer circumferential side of the end portion coil; a sealing cavity is formed between the separator and the inner surface of the shell and between the separator and the end surface of the stator core; the second cooling groove is communicated to the sealing cavity; the partition is provided with a through hole, the through hole is used for guiding cooling oil in the sealing cavity to flow out, and the through hole corresponds to the position where the end part coil is wrapped.

Preferably, the partition comprises an annular partition and an axial extension; the annular partition part is arranged around the circumference of the rotating shaft; the axial extension part is arranged around the circumference of the rotating shaft; the outer circumferential side of the annular partition part is connected with the inner surface of the shell, and the inner circumferential side of the annular partition part is connected with the first end of the axial extension part; the axial extension part extends towards the direction close to the stator core; the second end of the axial extension part is connected with the end part of the stator core; the through hole is arranged on the axial extension part and corresponds to the position of the end coil;

and/or the through holes are arranged in a plurality, and the through holes are arranged around the circumference of the rotating shaft.

Preferably, the inner surface of the housing is provided with a radial stop surface; the end face of the annular partition part far away from the axial extension part is in compression joint with the stop face.

Preferably, an annular groove is formed in the stop surface and circumferentially arranged around the rotating shaft, and an annular sealing ring is embedded in the annular groove.

Preferably, the partition comprises a first partition; the through holes comprise first through holes; the first separator is arranged at the first end part of the stator core, and a first sealing cavity is formed among the first separator, the inner surface of the shell and the first end surface of the stator core; the first end of the second cooling groove is communicated to the first sealing cavity; the first sealing cavity corresponds to the position of the first end line in the circumferential direction; the first through hole is arranged on the first separating piece and used for guiding cooling oil in the first sealing cavity to flow out; the first through hole corresponds to the position of the first end part coil in the circumferential direction;

and/or, the divider comprises a second divider; the through holes comprise second through holes; the second separator is arranged at the second end part of the stator core, and a second sealing cavity is formed between the second separator and the inner surface of the shell and between the second separator and the second end surface of the stator core; the second end of the second cooling groove is communicated to the second seal cavity; the second sealing cavity corresponds to the position of the second end wire package in the circumferential direction; the second through hole is formed in the second partition and used for guiding cooling oil in the second sealing cavity to flow out; and the second through hole corresponds to the position of the second end wire package in the circumferential direction.

Preferably, the first partition comprises a first annular partition and a first axial extension; the first annular partition part is arranged around the circumference of the rotating shaft; the first axial extension part is arranged around the circumference of the rotating shaft; the first end of the first axial extension part is connected with the inner peripheral side of the first annular partition part, and the first axial extension part extends towards the direction close to the stator core; the outer peripheral side of the first annular partition portion is connected with the inner surface of the housing; the second end of the first axial extension is connected with the first end face of the stator core.

Preferably, the second partition comprises a second annular partition and a second axial extension; the second annular partition part is arranged around the circumference of the rotating shaft; the second axial extension part is arranged around the circumference of the rotating shaft; a second end of the second axial extension part is connected with the inner peripheral side of the second annular partition part, and the second axial extension part extends towards the direction close to the stator core; the outer peripheral side of the second annular partition part is connected with the inner surface of the shell; the second end of the second axial extension is connected with the second end face of the stator core.

Preferably, the stop surface comprises a first stop surface; an end surface of the first annular partition, which is far away from the first axial extension portion, is in pressure joint with the first stop surface.

Preferably, the stop surface comprises a second stop surface; an end surface of the second annular partition portion, which is far away from the second axial extension portion, is in pressure contact with the second stop surface.

Preferably, the housing comprises a casing, a first end cap and a second end cap, the first end cap is mounted at the first end of the casing, and the second end cap is arranged at the second end of the casing.

Preferably, the second end cap is provided with a second compression member extending axially; the first end of the second pressing piece is connected with the inner surface of the second end cover; when the motor further comprises a second partition member comprising a second annular partition portion and a second axial extension portion, the second end of the second pressing member is in press-contact with an end face of the annular partition portion remote from the second axial extension portion.

Preferably, the motor further comprises a partition part and a first bearing, the first bearing is arranged at the first end of the rotor assembly, the first bearing is sleeved outside the rotating shaft, the partition part is arranged inside the shell, and the partition part is of an annular structure arranged around the circumferential direction of the rotating shaft; the outer periphery side of the partition part is connected with the inner surface of the shell, and the inner periphery side of the partition part is connected with the outer surface of the first bearing; a first accommodating cavity is formed among the first bearing, the partition part and the first end cover; a main oil inlet is formed in the separating part or the end cover and used for guiding cooling oil to enter the first accommodating cavity; when the rotating shaft is provided with a rotor oil inlet, the rotor oil inlet is communicated to the first accommodating cavity; the stator oil inlet is communicated to the first accommodating cavity.

Preferably, the peripheral edge of the partition is provided with a first pressing piece extending axially; the first end of the first pressing piece is connected with the peripheral wall of the partition part; when the motor further comprises a first partition comprising a first annular partition and a first axial extension, the second end of the first compression member is in pressure contact with an end face of the first annular partition remote from the first axial extension.

Preferably, the first pressing member is an annular member circumferentially arranged around the rotating shaft;

and/or the first stop surface is an annular surface arranged circumferentially around the rotating shaft.

Preferably, the first end cover is provided with an oil storage area, the oil storage area is formed by the outward depression of the inner surface of the first end cover, and the oil storage area corresponds to the position of the first bearing in the axial direction; the oil storage area and the bearing form a second accommodating cavity, and the second accommodating cavity is communicated with the first accommodating cavity.

Preferably, the first accommodating cavity is communicated with the second accommodating cavity through the oil guide hole.

Preferably, the rotor oil inlet is located in the second receiving cavity.

Preferably, the motor further comprises an oil tank, and the oil tank is communicated with the main oil inlet.

Preferably, the motor further comprises an oil return channel, and the oil return channel is communicated with the lowest position in the shell and the oil tank; the oil return passage is used for guiding cooling oil at the bottom of the shell to flow back to the oil tank.

Preferably, an axially extending oil inlet channel is arranged on the casing, and the stator oil inlet is communicated with the first cooling groove through the oil inlet channel.

Preferably, the outer peripheral side of the housing is provided with a convex strip extending in the axial direction; an axially extending oil inlet channel is arranged in the raised line; the first end of the oil inlet channel extends to the first end of the machine shell, and the second end of the oil inlet channel extends to the second end of the machine shell; the first end of the oil inlet channel is the end where the stator oil inlet is located.

Preferably, an oil pump and a heat exchanger are arranged on the outer surface of the first end cover; the oil pump is provided with an oil pump inlet and an oil pump outlet; the inlet of the oil pump is communicated with the oil tank; the outlet of the oil pump is communicated with the oil inlet of the heat exchanger; the oil outlet of the heat exchanger is communicated to the main oil inlet.

Preferably, the interior of the shell is sequentially divided into a first chamber, a second chamber and a third chamber from the first end cover to the second end cover; the bottom of the shell forms an oil tank; the oil return passage is arranged at the bottom of the machine shell and communicated with the bottom of the third chamber and the first chamber.

Preferably, the motor further comprises a first connecting pipe, and the first connecting pipe is communicated with an outlet of the oil pump and an oil inlet of the heat exchanger;

and/or the motor further comprises a second connecting pipe, and the second connecting pipe is communicated with the oil outlet of the heat exchanger and the main oil inlet.

Preferably, the second connection pipe is disposed within the housing.

Preferably, the motor further comprises a second bearing, the second bearing is arranged at the second end of the rotor assembly, and the second bearing is sleeved outside the rotating shaft.

Preferably, the second end of the rotating shaft extends out of the second end cover, the rotating shaft is sleeved with an oil seal, the inner peripheral side of the oil seal is attached to the outer surface of the rotating shaft, and the outer peripheral side of the oil seal is attached to the second end cover; and a dynamic sealing structure is formed among the oil seal, the rotating shaft and the second end cover.

Preferably, the rotor oil outlet further comprises a third rotor oil outlet, the third rotor oil outlet being axially located between the second bearing and the oil seal.

According to still another aspect of the present application, there is provided an automobile including the motor, the motor being the motor described above.

The application provides a motor and have its car adopts second cooling bath and first cooling bath guide coolant oil to stator core surface and tip solenoid surface, cooling oil circuit simple structure, and the casing internal surface has been seted up to second cooling bath and first cooling bath, does not influence the motor performance.

Drawings

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

fig. 2 is a cross-sectional view of a motor housing of an embodiment of the present application;

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

fig. 4 is a schematic structural view of a rotor pressing part of a motor according to an embodiment of the present application;

FIG. 5 is a schematic structural view of a rotor pressing portion according to an embodiment of the present application;

FIG. 6 is a cross-sectional view of a rotor extrusion and rotor assembly according to an embodiment of the present application;

fig. 7 is a cross-sectional view of a housing of an electric machine of an embodiment of the present application;

FIG. 8 is a cross-sectional view of a separator according to an embodiment of the present application;

FIG. 9 is a schematic structural view of a separator according to an embodiment of the present application;

FIG. 10 is a schematic structural diagram of a first receiving chamber according to an embodiment of the present disclosure;

fig. 11 is a schematic structural diagram of a motor according to an embodiment of the present application;

fig. 12 is a cross-sectional view of a motor according to an embodiment of the present application.

The reference numerals are represented as:

1. a housing; 11. a first cooling tank; 12. a second cooling tank; 13. a convex strip; 14. a housing; 15. a first end cap; 151. an oil storage region; 152. an oil guide hole; 16. a second end cap; 17. an oil inlet channel; 171. a stator oil inlet; 18. an oil return passage; 21. a stator core; 22. an end coil; 31. a rotor core; 32. A rotating shaft; 321. a rotor oil outlet; a rotor oil inlet; 4. a rotor pressing section; 41. an oil inlet of the extrusion part; 42. an extrusion portion oil passage; 43. an extrusion part oil outlet; 5. a separator; 51. an annular partition portion; 52. An axial extension; 53. a through hole; 61. a stop surface; 62. an annular seal ring; 71. a first bearing; 72. A second bearing; 73. a partition portion; 731. a main oil inlet; 8. an oil pump; 9. a heat exchanger; 91. a first connecting pipe; 92. a first connecting pipe; 93. and (7) oil sealing.

Detailed Description

Referring to fig. 1-2 in combination, according to an embodiment of the present application, an electric machine includes a housing 1, a stator assembly disposed in the housing 1, the stator assembly including a stator core 21, and a first cooling slot 11 and a second cooling slot 12 disposed on an inner surface of the housing 1 and communicated with each other; the first cooling slots 11 are circumferentially arranged around the center axis of the stator core 21; the second cooling groove 12 extends along the axial direction of the stator core 21, and the housing 1 is provided with a stator oil inlet 171, and the stator oil inlet 171 is used for guiding cooling oil to enter the first cooling groove 11; an end coil 22 wound by a stator coil is provided at an end of the stator core 21; second cooling tank 12 extends to stator core 21's tip, adopts second cooling tank 12 and first cooling tank 11 guide coolant oil to flow to stator core 21 surface and tip solenoid 22 surface, and the cooling effect is good, and the internal surface of casing 1 has been seted up to second cooling tank 12 and first cooling tank 11, does not influence the motor performance.

Further, the motor further includes a rotor core 31 and a rotating shaft 32 both disposed in the housing 1; the rotor core 31 is sleeved outside the rotating shaft 32, the rotating shaft 32 is internally of a hollow structure, the rotating shaft 32 is provided with a rotor oil inlet and a rotor oil outlet 321, the rotor oil inlet is used for guiding cooling oil to enter the hollow structure, and the rotor oil outlet 321 is used for guiding the cooling oil in the hollow structure to flow out;

and/or the central axis of the stator core 21 is parallel to the horizontal plane; and/or the peripheral wall of the stator core 21 is jointed with the inner surface of the shell 1; and/or, the first cooling groove is an annular groove circumferentially arranged around the central axis of the stator core 21, and the oil path of the rotor hollow structure can cool the magnetic steel and take away heat generated by the magnetic steel. The rotor oil outlet 321 can guide the cooling oil in the hollow structure to flow out, so that the cooling oil is directly contacted with the rotating shaft 32, and the cooling effect on the rotating shaft is good.

Further, the inner surface of the housing 1 is provided with a plurality of protruding strips arranged at intervals along the circumferential direction of the stator core 21, each protruding strip extends along the axial direction of the stator core 21, and a second cooling groove 12 is formed between two adjacent protruding strips 13.

Referring to fig. 3 in combination, the present application also discloses some embodiments, a stator assembly is sleeved on the outer peripheral side of the rotor core 31, and a rotor extrusion portion 4 is arranged at the end of the rotor; the rotor pressing portion 4 is located on the inner circumferential side of the end portion coil 22; a squeezing part oil inlet 41 is formed in the rotor squeezing part 4, and the squeezing part oil inlet 41 is communicated with the rotor oil outlet 321; an extrusion part oil passage 42 is arranged in the rotor extrusion part 4; and a squeezing part oil outlet 43 is arranged on the surface of the rotor squeezing part 4 close to the end part solenoid 22; the squeeze portion oil outlet 43 corresponds to the position of the end solenoid 22; the extrusion oil inlet 41, the extrusion oil passage 42 and the extrusion oil outlet 43 are sequentially communicated, and in the working process of the motor, the rotor oil outlet 321 on the surface of the cooling oil rotating shaft 32 is thrown out, enters the extrusion oil inlet 41, further enters the extrusion oil passage 42, flows out through the extrusion oil outlet 43, and drips on the inner peripheral side of the end solenoid 22, so that the rotor extrusion part 4 is cooled, and the inner peripheral side of the end solenoid 22 is cooled.

Further, the end coils 22 include a first end coil and a second end coil; the first end portion coil is disposed at a first end portion of the stator core 21, and the second end portion coil is disposed at a second end portion of the stator core 21.

Further, the rotor pressing portion 4 includes a first rotor pressing portion; the first rotor extrusion part is arranged at the first end part of the rotor and corresponds to the position of a first end part coil; a first extrusion part oil inlet is formed in the first rotor extrusion part; the first extrusion part oil inlet is communicated with the rotor oil outlet 321; a first extrusion part oil channel is arranged in the first rotor extrusion part, and a first extrusion part oil outlet is arranged on the surface, close to the first end solenoid, of the first rotor extrusion part; the first extrusion part oil inlet, the first extrusion part oil channel and the first extrusion part oil outlet are communicated in sequence;

and/or the rotor pressing part 4 comprises a second rotor pressing part; the second rotor extrusion part is arranged at the second end part of the rotor and corresponds to the position of the second end part line package in the circumferential direction; a second extrusion part oil inlet is formed in the second rotor extrusion part and is communicated with the rotor oil outlet 321; a second extrusion part oil channel is arranged in the second rotor extrusion part, and a second extrusion part oil outlet is arranged on the surface, close to the second end solenoid, of the second rotor extrusion part; the second extrusion oil inlet, the second extrusion oil channel and the second extrusion oil outlet are communicated in sequence, the inner surfaces of the two end part coils can be cooled, and the cooling effect is good.

Further, the rotor oil outlet 321 comprises a first rotor oil outlet; the first rotor oil outlet is communicated to the first extrusion part oil inlet;

and/or, the rotor oil outlet 321 comprises a second rotor oil outlet; the oil outlet of the second rotor is communicated to the oil inlet of the second extrusion part.

Further, the rotor extrusion part 4 is an annular structure arranged around the circumference of the rotating shaft 32, and the inner circumferential wall of the rotor extrusion part 4 is attached to the outer surface of the rotating shaft 32; the extrusion part oil inlet 41 is formed in the inner peripheral wall of the rotor extrusion part 4 and corresponds to the rotor oil outlet 321 in the axial direction and the circumferential direction; the squeezing portion oil passage 42 is provided inside the rotor squeezing portion 4, and an oil outlet of the rotor squeezing portion 4 is provided on the outer peripheral wall of the rotor squeezing portion 4.

4-6, the present application further discloses embodiments in which the rotor extrusion 4 comprises coaxial first and second annular portions having equal inner diameters in cross-section; the second annular part is arranged on the first end part of the first annular part, and the outer peripheral wall of the second annular part is positioned on the inner peripheral side of the outer peripheral wall of the first annular part; the inner peripheral walls of the first annular part and the second annular part are attached to the rotating shaft 32; the extrusion part oil inlet 41 is arranged on the inner peripheral wall of the first annular part; the squeezing portion oil outlet 43 is arranged on the outer peripheral wall of the second annular portion; the extrusion portion oil passage 42 includes a first oil passage and a second oil passage that are communicated with each other, the first oil passage being disposed in the first annular portion, the second oil passage being disposed in the second annular portion; the extrusion part oil inlet 41 is communicated with the rotor oil outlet 321 and the first oil passage; the squeezing portion oil outlet 43 communicates to the second oil passage.

Further, an accommodating groove is formed at the connecting position of the extrusion oil inlet 41 and the extrusion oil passage 42; the accommodating groove communicates the extrusion part oil inlet 41 with the extrusion part oil passage 42;

and/or, the plurality of squeezing portion oil outlets 43 are arranged circumferentially around the rotating shaft 32, so that the inner surface of the end portion coil 22 can be effectively cooled.

Referring to fig. 7 in combination, the present application also discloses embodiments in which the motor further includes a spacer 5, the spacer 5 is disposed at one end of the stator core 21, and the spacer 5 is located at an outer circumferential side of the end-portion coil 22; a sealing cavity is formed between the separator 5 and the inner surface of the shell 1 and the end surface of the stator core 21; the second cooling tank 12 is communicated to the sealed cavity; the partition 5 is provided with a through hole 53, the through hole 53 being used to guide the outflow of the cooling oil inside the sealed cavity, and the through hole 53 corresponding to the position of the end portion package 22.

8-9, the present application also discloses embodiments wherein the partition 5 comprises an annular partition 51 and an axial extension 52; the annular partition 51 is circumferentially disposed around the rotating shaft 32; the axial extension 52 is circumferentially disposed about the shaft 32; the outer peripheral side of the annular partition portion 51 is connected to the inner surface of the housing 1, and the inner peripheral side is connected to the first end of the axially extending portion 52; the axially extending portion 52 extends in a direction approaching the stator core 21; the second end of the axial extension 52 is connected to the end of the stator core; the through hole 53 is provided on the axial extension 52 and corresponds to the position of the end coil 22;

and/or, the through holes 53 are arranged in a plurality, the through holes 53 are circumferentially arranged around the rotating shaft 32, after cooling oil enters the stator oil inlet 171, a part of the cooling oil enters the first cooling groove 11 and flows along the first cooling groove 11 to cool the stator core, a part of the cooling oil flows along the second cooling groove and the two radial sides of the stator core, and finally enters a sealing cavity formed between the separator 5 and the inner surface of the shell 1 and between the separator and the end surface of the stator core 21 to be sprayed onto the end solenoid 22 through the annular through hole 53, so that the end solenoid 22 is cooled.

Further, a radial stop surface 61 is provided on the inner surface of the housing 1; the end face of the annular partition 51 remote from the axial extension 52 is pressed against the stop face 61.

Further, an annular groove arranged around the circumference of the rotating shaft 32 is formed in the stop surface 61, and an annular sealing ring 62 is embedded in the annular groove.

Further, the partition 5 includes a first partition; the through-hole 53 includes a first through-hole; a first separator is arranged at the first end of the stator core 21, and a first sealed cavity is formed between the first separator and the inner surface of the shell 1 and the first end surface of the stator core 21; a first end of the second cooling groove 12 is communicated to the first seal cavity; the first sealing cavity corresponds to the position of the first end line in the circumferential direction; the first through hole is arranged on the first separating piece and used for guiding cooling oil in the first sealing cavity to flow out; the first through hole corresponds to the position of the first end part coil in the circumferential direction;

and/or the partition 5 comprises a second partition; the through hole 53 includes a second through hole; the second separator is arranged at the second end part of the stator core 21, and a second sealing cavity is formed between the second separator and the inner surface of the shell 1 and the second end surface of the stator core 21; a second end of the second cooling groove 12 is communicated to the second seal cavity; the second sealing cavity corresponds to the position of the second end wire package in the circumferential direction; the second through hole is formed in the second partition and used for guiding cooling oil in the second sealing cavity to flow out; and the second through hole corresponds to the position of the second end wire package in the circumferential direction.

Further, the first divider includes a first annular divider and a first axial extension; the first annular partition is circumferentially disposed around the rotating shaft 32; the first axial extension is disposed circumferentially about the shaft 32; a first end of the first axial extension portion is connected to an inner peripheral side of the first annular partition portion, and the first axial extension portion extends in a direction approaching the stator core 21; the outer peripheral side of the first annular partition portion is connected to the inner surface of the housing 1; the second end of the first axial extension is connected with the first end face of the stator core.

Further, the second partition includes a second annular partition and a second axial extension; a second annular partition is circumferentially disposed about the shaft 32; the second axial extension is disposed circumferentially about the shaft 32; a second end of the second axial extension portion is connected to an inner peripheral side of the second annular partition portion, and the second axial extension portion extends in a direction approaching the stator core 21; the outer peripheral side of the second annular partition portion is connected to the inner surface of the housing 1; the second end of the second axial extension is connected with the second end face of the stator core.

Further, the stop surface 61 includes a first stop surface; an end surface of the first annular partition, which is far away from the first axial extension portion, is in pressure joint with the first stop surface.

Further, the stop surface 61 includes a second stop surface; an end surface of the second annular partition portion, which is far away from the second axial extension portion, is in pressure contact with the second stop surface.

Further, the housing 1 comprises a casing 14, a first end cap 15 and a second end cap 16, wherein the first end cap 15 is mounted at a first end of the casing 14, and the second end cap 16 is disposed at a second end of the casing 14.

Further, a second pressing member extending axially is provided on the second end cap 16; a first end of the second compression member is connected to an inner surface of the second end cap 16; when the motor further comprises a second partition member comprising a second annular partition portion and a second axial extension portion, the second end of the second pressing member is crimped with an end face of the second annular partition portion remote from the second axial extension portion.

Referring to fig. 10 in combination, the present application also discloses some embodiments, the motor further includes a partition portion 73 and a first bearing 71, the first bearing 71 is disposed at a first end of the rotor assembly, the first bearing 71 is sleeved outside the rotating shaft 32, the partition portion 73 is disposed inside the housing 1, and the partition portion 73 is an annular structure disposed circumferentially around the rotating shaft 32; the outer peripheral side of the partition portion 73 is connected to the inner surface of the housing 14, and the inner peripheral side of the partition portion 73 is connected to the outer surface of the first bearing 71; a first accommodating chamber is formed among the first bearing 71, the partition 73 and the first end cover 15; a main oil inlet 731 is arranged on the partition part 73 or the end cover, and the main oil inlet 731 is used for guiding cooling oil into the first accommodating cavity; when the rotating shaft 32 is provided with a rotor oil inlet, the rotor oil inlet is communicated to the first accommodating cavity; the stator oil inlet 171 communicates to the first receiving chamber, and the cooling oil enters the first receiving chamber through the main oil inlet 731, and flows into the stator oil inlet 171 and the rotor oil inlet through the first receiving chamber.

Further, a first pressing member extending in the axial direction is provided on the outer peripheral edge of the partition portion 73; a first end of the first pressing member is connected to the outer peripheral wall of the partition portion 73; when the motor further comprises a first partition member, the first partition member encloses the first annular partition portion and the first axial extension portion, the second end of the first pressing member is in press-contact with an end surface of the first annular partition portion, the end surface being away from the first axial extension portion.

Further, the first pressing member is an annular member disposed circumferentially around the rotating shaft 32;

and/or the first stop surface is an annular surface disposed circumferentially about the axis of rotation 32.

Further, the first end cover 15 is provided with an oil storage area 151, the oil storage area 151 is formed by the inner surface of the first end cover 15 being recessed outwards, and the oil storage area 151 corresponds to the position of the first bearing 71 in the axial direction; the oil storage area 151 and the bearing form a second accommodating cavity, the second accommodating cavity is communicated with the first accommodating cavity, cooling oil enters the first accommodating cavity through the main oil inlet 731, and flows into the second accommodating cavity through the first accommodating cavity to lubricate the first bearing.

Further, the first bearing is an open bearing.

Further, the first receiving cavity is communicated with the second receiving cavity through the oil guide hole 152, and the cooling oil enters the first receiving cavity through the main oil inlet 731, flows into the stator oil inlet 171 and the second receiving cavity through the first receiving cavity, and enters the rotor assembly through the second receiving cavity to cool the rotor assembly.

Further, the rotor oil inlet is located in the second accommodation cavity.

Further, the motor further comprises an oil tank, and the oil tank is communicated with the main oil inlet 731.

Further, the motor also comprises an oil return channel 18, and the oil return channel 18 is communicated with the lowest position in the shell 1 and an oil tank; the oil return passage 18 serves to guide the cooling oil at the bottom of the casing 1 to return to the oil tank.

Further, an axially extending oil inlet channel 17 is arranged on the casing 14, the stator oil inlet 171 is communicated with the first cooling groove 11 through the oil inlet channel 17, and the stator oil inlet 171 introduces cooling oil into the oil inlet channel 17, flows into the first cooling groove 11, and flows into the second cooling groove 12 to cool the stator assembly.

Furthermore, the outer periphery of the shell is provided with a convex strip extending along the axial direction; an axially extending oil inlet channel 17 is arranged in the raised line; a first end of the oil inlet passage 17 extends to a first end of the casing 14, and a second end of the oil inlet passage 17 extends to a second end of the casing 14; the first end of the oil inlet channel 17 is the end where the stator oil inlet 171 is located.

Referring to fig. 11-12 in combination, the present application also discloses embodiments in which the first end cover 15 is provided with an oil pump 8 and a heat exchanger 9 on its outer surface; the oil pump 8 is provided with an oil pump inlet and an oil pump outlet; an inlet of the oil pump 8 is communicated with an oil tank; the outlet of the oil pump 8 is communicated with the oil inlet of the heat exchanger 9; an oil outlet of the heat exchanger 9 is communicated to a main oil inlet 731.

Further, the interior of the housing 1 is sequentially divided into a first chamber, a second chamber and a third chamber from the first end cover 15 to the second end cover 16; the bottom of the shell 1 forms an oil tank; the oil return passage 18 is disposed at the bottom of the casing 14 and communicates the bottom of the third chamber with the first chamber.

Further, the motor further comprises a first connecting pipe 91, and the first connecting pipe 91 is communicated with an outlet of the oil pump 8 and an oil inlet of the heat exchanger 9;

and/or the motor further comprises a second connecting pipe 92, and the second connecting pipe 92 is communicated with the oil outlet of the heat exchanger 9 and the main oil inlet 731.

Further, a second connection pipe 92 is provided inside the housing.

Further, the oil pump 8 corresponds to the position of the oil tank in the axial direction.

Further, the motor further includes a second bearing 72, the second bearing 72 is disposed at the second end of the rotor assembly, and the second bearing 72 is sleeved outside the rotating shaft 32.

Further, a second end of the rotating shaft 32 extends out of the second end cover 16, an oil seal 93 is sleeved on the rotating shaft 32, the inner peripheral side of the oil seal 93 is attached to the outer surface of the rotating shaft 32, and the outer peripheral side of the oil seal 93 is attached to the second end cover 16; the oil seal 93 forms a dynamic sealing structure with the rotating shaft 32 and the second end cover 16.

Further, the rotor oil outlet 321 further includes a third rotor oil outlet 321, and the third rotor oil outlet 321 is located between the second bearing 72 and the oil seal 93 in the axial direction, and the oil flowing out from the third rotor oil outlet 321 can lubricate the bearing and the oil seal.

According to an embodiment of the application, an automobile comprises a motor, and the motor is the motor.

It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.

The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed. The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present application, and these modifications and variations should also be considered as the protection scope of the present application.

Claims (39)

1. The motor is characterized by comprising a shell (1), wherein a stator assembly is arranged in the shell (1), the stator assembly comprises a stator core (21), and the motor is characterized in that a first cooling groove (11) and a second cooling groove (12) which are communicated with each other are arranged on the inner surface of the shell (1); the first cooling slots (11) are arranged circumferentially around the central axis of the stator core (21); the second cooling groove (12) extends along the axial direction of the stator core (21), a stator oil inlet (171) is formed in the shell (1), and the stator oil inlet (171) is used for guiding cooling oil to enter the first cooling groove (11); the end part of the stator iron core (21) is provided with an end part coil (22) wound by a stator coil; the second cooling slot (12) extends to an end of the stator core (21).

2. The machine according to claim 1, further comprising a rotor core (31) and a rotating shaft (32) both disposed within the housing (1); the rotor core (31) is sleeved outside the rotating shaft (32), the rotating shaft (32) is internally of a hollow structure, a rotor oil inlet and a rotor oil outlet (321) are formed in the rotating shaft (32), the rotor oil inlet is used for guiding cooling oil to enter the hollow structure, and the rotor oil outlet (321) is used for guiding the cooling oil in the hollow structure to flow out;

and/or the central axis of the stator core (21) is parallel to the horizontal plane; and/or the peripheral wall of the stator core (21) is attached to the inner surface of the shell (1); and/or the first cooling slot is an annular groove arranged circumferentially around the central axis of the stator core.

3. The electric machine according to claim 1, characterized in that the inner surface of the housing (1) is further provided with a plurality of ribs arranged at intervals in the circumferential direction of the stator core (21), each rib extending in the axial direction of the stator core (21), and the second cooling slot (12) is formed between two adjacent ribs (13).

4. The motor according to claim 2, wherein the stator assembly is sleeved on the outer periphery side of the rotor core (31), and a rotor extrusion part (4) is arranged at the end part of the rotor; the rotor pressing portion (4) is located on the inner peripheral side of the end coil (22); a squeezing part oil inlet (41) is formed in the rotor squeezing part (4), and the squeezing part oil inlet (41) is communicated with the rotor oil outlet (321); an extrusion part oil channel (42) is arranged in the rotor extrusion part (4); a squeezing part oil outlet (43) is arranged on the surface, close to the end solenoid (22), of the rotor squeezing part (4); the extrusion part oil outlet (43) corresponds to the position of the end solenoid (22); the extrusion part oil inlet (41), the extrusion part oil passage (42) and the extrusion part oil outlet (43) are communicated in sequence.

5. The machine according to claim 4, characterized in that the end coils (22) comprise a first end coil and a second end coil; the first end portion coil is arranged at the first end portion of the stator core (21), and the second end portion coil is arranged at the second end portion of the stator core (21).

6. The machine according to claim 5, characterized in that the rotor pressing part (4) comprises a first rotor pressing part; the first rotor pressing part is arranged at the first end part of the rotor, and corresponds to the position of the first end part coil; a first extrusion part oil inlet is formed in the first rotor extrusion part; the first extrusion part oil inlet is communicated with the rotor oil outlet (321); a first extrusion part oil channel is arranged in the first rotor extrusion part, and a first extrusion part oil outlet is arranged on the surface, close to the first end solenoid, of the first rotor extrusion part; the first extrusion part oil inlet, the first extrusion part oil channel and the first extrusion part oil outlet are communicated in sequence;

and/or the rotor pressing part (4) comprises a second rotor pressing part; the second rotor pressing part is arranged at the second end part of the rotor and corresponds to the position of a second end part coil in the circumferential direction; a second extrusion part oil inlet is formed in the second rotor extrusion part and is communicated with the rotor oil outlet (321); a second extrusion part oil channel is arranged in the second rotor extrusion part, and a second extrusion part oil outlet is arranged on the surface, close to the second end solenoid, of the second rotor extrusion part; and the second extrusion part oil inlet, the second extrusion part oil channel and the second extrusion part oil outlet are communicated in sequence.

7. The electric machine according to claim 6, wherein the rotor oil outlet (321) comprises a first rotor oil outlet; the first rotor oil outlet is communicated to the first extrusion part oil inlet;

and/or the rotor oil outlet (321) comprises a second rotor oil outlet; the second rotor oil outlet is communicated to the second extrusion part oil inlet.

8. The motor according to claim 4, wherein the rotor extrusion portion (4) is an annular structure circumferentially arranged around the rotating shaft (32), and an inner circumferential wall of the rotor extrusion portion (4) is attached to an outer surface of the rotating shaft (32); the extrusion part oil inlet (41) is formed in the inner peripheral wall of the rotor extrusion part (4) and corresponds to the rotor oil outlet (321) in the axial direction and the circumferential direction; the extrusion part oil channel (42) is arranged inside the rotor extrusion part (4), and an oil outlet of the rotor extrusion part (4) is arranged on the peripheral wall of the rotor extrusion part (4).

9. The machine according to claim 8, characterized in that the rotor extrusion (4) comprises a first and a second coaxial annular portions, the inner diameters of the cross-sections of which are equal; the second annular part is arranged on the first end part of the first annular part, and the outer peripheral wall of the second annular part is positioned on the inner peripheral side of the outer peripheral wall of the first annular part; the inner peripheral walls of the first annular part and the second annular part are attached to the rotating shaft (32); the extrusion part oil inlet (41) is arranged on the inner peripheral wall of the first annular part; the squeezing part oil outlet (43) is arranged on the outer peripheral wall of the second annular part; the extrusion oil passage (42) comprises a first oil passage and a second oil passage which are communicated with each other, the first oil passage is arranged in the first annular part, and the second oil passage is arranged in the second annular part; the extrusion part oil inlet (41) is communicated with the rotor oil outlet (321) and the first oil channel; the squeezing portion oil outlet (43) is communicated to the second oil passage.

10. The electric machine according to claim 9, characterized in that a receiving groove is provided at a connection position of the extrusion oil inlet (41) and the extrusion oil passage (42); the accommodating groove communicates the extrusion part oil inlet (41) with the extrusion part oil passage (42);

and/or the extrusion oil outlet (43) is arranged in a plurality of numbers, and the extrusion oil outlet (43) is arranged around the circumference of the rotating shaft (32).

11. The electric machine according to claim 2, further comprising a separator (5), the separator (5) being provided at one end of the stator core (21), and the separator (5) being located at an outer peripheral side of the end coil (22); a sealing cavity is formed between the separator (5) and the inner surface of the shell (1) and the end surface of the stator core (21); the second cooling groove (12) is communicated to the seal cavity; be provided with through-hole (53) on separator (5), through-hole (53) are used for guiding the cooling oil outflow in the sealed chamber, just through-hole (53) with the position that end solenoid (22) are in corresponds.

12. The machine according to claim 11, characterized in that the partition (5) comprises an annular partition (51) and an axial extension (52); the annular partition (51) is circumferentially arranged around the rotating shaft (32); the axial extension (52) is disposed circumferentially about the shaft (32); the outer peripheral side of the annular partition part (51) is connected with the inner surface of the shell (1), and the inner peripheral side is connected with the first end of the axial extension part (52); the axial extension portion (52) extends in a direction approaching the stator core (21); a second end of the axial extension (52) is connected with an end of the stator core; the through hole (53) is arranged on the axial extension part (52) and corresponds to the position of the end coil (22);

and/or the through holes (53) are arranged in a plurality, and the through holes (53) are arranged circumferentially around the rotating shaft (32).

13. The machine according to claim 12, characterized in that the inner surface of the housing (1) is provided with a radial stop surface (61); an end face of the annular partition (51) remote from the axial extension (52) is in pressure contact with the stop face (61).

14. The electric machine according to claim 13, characterized in that the stop surface (61) is provided with an annular groove arranged circumferentially around the shaft (32), and an annular sealing ring (62) is embedded in the annular groove.

15. The machine according to claim 13, characterized in that the partition (5) comprises a first partition; the through-hole (53) comprises a first through-hole; the first separator is arranged at the first end part of the stator core (21), and a first sealed cavity is formed between the first separator and the inner surface of the shell (1) and the first end surface of the stator core (21); a first end of the second cooling groove (12) is communicated to the first sealed cavity; the first sealed cavity corresponds to the position of the first end coil in the circumferential direction; the first through hole is arranged on the first partition and used for guiding cooling oil in the first sealing cavity to flow out; the first through hole corresponds to the position of the first end coil in the circumferential direction;

and/or the partition (5) comprises a second partition; the through-hole (53) comprises a second through-hole; the second separator is arranged at the second end part of the stator core (21), and a second sealing cavity is formed between the second separator and the inner surface of the shell (1) and the second end surface of the stator core (21); a second end of the second cooling groove (12) is communicated to the second seal cavity; the second sealed cavity corresponds to the position of the second end coil in the circumferential direction; the second through hole is arranged on the second separator and is used for guiding the cooling oil in the second sealing cavity to flow out; and the second through hole corresponds to the second end coil in the circumferential direction.

16. The electric machine of claim 15 wherein the first divider comprises a first annular divider and a first axial extension; the first annular partition is circumferentially arranged around the rotating shaft (32); the first axial extension is disposed circumferentially about the shaft (32); a first end of the first axial extension portion is connected to an inner peripheral side of the first annular partition portion, and the first axial extension portion extends in a direction approaching the stator core (21); the outer peripheral side of the first annular partition is connected with the inner surface of the housing (1); the second end of the first axial extension is connected with the first end face of the stator core.

17. The electric machine of claim 15 wherein the second partition comprises a second annular partition and a second axial extension; the second annular partition is disposed circumferentially around the shaft (32); the second axial extension being disposed circumferentially around the shaft (32); a second end of the second axial extension portion is connected to an inner peripheral side of the second annular partition portion, and the second axial extension portion extends in a direction approaching the stator core (21); the outer peripheral side of the second annular partition is connected to the inner surface of the housing (1); and the second end of the second axial extension part is connected with the second end surface of the stator core.

18. The electric machine according to claim 16, characterized in that the stop surface (61) comprises a first stop surface; an end surface of the first annular partition, which is remote from the first axial extension, is in pressure contact with the first stop surface.

19. The electric machine according to claim 17, characterized in that the stop surface (61) comprises a second stop surface; an end surface of the second annular partition remote from the second axial extension is in pressure contact with the second stop surface.

20. The electrical machine according to any of claims 1-19, wherein the housing (1) comprises a machine casing (14), a first end cap (15) and a second end cap (16), the first end cap (15) being mounted to a first end of the machine casing (14), the second end cap (16) being provided to a second end of the machine casing (14).

21. An electric machine according to claim 20, characterized in that the second end cap (16) is provided with an axially extending second hold-down member; the first end of the second pressing piece is connected with the inner surface of the second end cover (16); when the motor further includes a second partition including a second annular partition and a second axial extension, the second end of the second pressing member is in press-contact with an end surface of the second annular partition remote from the second axial extension.

22. The electric machine according to claim 20, further comprising a partition (73) and a first bearing (71), wherein the first bearing (71) is disposed at a first end of the rotor assembly, and the first bearing (71) is sleeved outside the rotating shaft (32), the partition (73) is disposed inside the housing (1), and the partition (73) is an annular structure disposed circumferentially around the rotating shaft (32); the outer peripheral side of the partition part (73) is connected with the inner surface of the housing (14), and the inner peripheral side of the partition part (73) is connected with the outer surface of the first bearing (71); a first accommodating cavity is formed between the first bearing (71) and the partition part (73) and the first end cover (15); a main oil inlet (731) is arranged on the partition part (73) or the end cover, and the main oil inlet (731) is used for guiding cooling oil to enter the first accommodating cavity; when the rotating shaft (32) is provided with a rotor oil inlet, the rotor oil inlet is communicated to the first accommodating cavity; the stator oil inlet (171) is communicated to the first accommodating cavity.

23. An electric machine according to claim 21, characterized in that the partition (73) is provided with an axially extending first compression member on its peripheral edge; the first end of the first pressing piece is connected with the peripheral wall of the partition part (73); when the motor further comprises a first partition member that encompasses the first annular partition portion and the first axial extension portion, the second end of the first pressing member is in press-contact with an end surface of the first annular partition portion that is remote from the first axial extension portion.

24. The electric machine of claim 23, wherein the first compression member is an annular member disposed circumferentially about the shaft (32);

and/or the first stop surface is an annular surface arranged circumferentially around the rotation axis (32).

25. The machine according to claim 22, wherein an oil reservoir (151) is provided in the first end cover (15), the oil reservoir (151) being formed by an inner surface of the first end cover (15) being outwardly recessed, the oil reservoir (151) corresponding axially to the position of the first bearing (71); the oil storage area (151) and the bearing form a second accommodating cavity, and the second accommodating cavity is communicated with the first accommodating cavity.

26. The electric machine of claim 25, wherein the first receiving chamber communicates with the second receiving chamber through an oil guide hole (152).

27. The electric machine of claim 25 wherein the rotor oil inlet is located within the second receiving cavity.

28. The electric machine of claim 22, further comprising an oil tank in communication with the main oil inlet (731).

29. The electric machine according to claim 28, characterized in that it further comprises an oil return channel (18), said oil return channel (18) communicating the lowest inside the casing (1) with the oil tank; the oil return channel (18) is used for guiding cooling oil at the bottom of the shell (1) to flow back to the oil tank.

30. The electrical machine according to claim 21, wherein an axially extending oil inlet channel (17) is provided in the housing (14), the stator oil inlet (171) communicating with the first cooling slot (11) through the oil inlet channel (17).

31. The electric machine of claim 30, wherein the outer peripheral side of the housing is provided with ribs extending in the axial direction; an axially extending oil inlet channel (17) is arranged in the raised line; a first end of the oil inlet passage (17) extends to a first end of the casing (14), and a second end of the oil inlet passage (17) extends to a second end of the casing (14); the first end of the oil inlet channel (17) is the end where the stator oil inlet (171) is located.

32. The machine according to claim 29, characterized in that the first end cover (15) is provided on its outer surface with an oil pump (8) and a heat exchanger (9); the oil pump (8) is provided with an oil pump inlet and an oil pump outlet; the inlet of the oil pump (8) is communicated with the oil tank; the outlet of the oil pump (8) is communicated with the oil inlet of the heat exchanger (9); an oil outlet of the heat exchanger (9) is communicated to the main oil inlet (731).

33. The machine according to claim 29, characterized in that the interior of the housing (1) is divided into a first chamber, a second chamber and a third chamber in sequence from the first end cap (15) towards the second end cap (16); the oil tank is formed at the bottom of the shell (1); the oil return channel (18) is arranged at the bottom of the machine shell (14) and communicated with the bottom of the third chamber and the first chamber.

34. The electric machine according to claim 32, characterized in that it further comprises a first connection pipe (91), said first connection pipe (91) communicating an outlet of said oil pump (8) with an oil inlet of said heat exchanger (9);

and/or the motor further comprises a second connecting pipe (92), and the second connecting pipe (92) is communicated with the oil outlet of the heat exchanger (9) and the main oil inlet (731).

35. The electric machine according to claim 34, wherein the second connecting tube (92) is disposed within the housing.

36. The electric machine of claim 21, further comprising a second bearing (72), wherein the second bearing (72) is disposed at the second end of the rotor assembly, and wherein the second bearing (72) is disposed outside of the shaft (32).

37. The electric machine according to claim 36, wherein the second end of the rotating shaft (32) extends out of the second end cover (16), an oil seal (93) is sleeved on the rotating shaft (32), the inner circumferential side of the oil seal (93) is attached to the outer surface of the rotating shaft (32), and the outer circumferential side of the oil seal (93) is attached to the second end cover (16); and a dynamic sealing structure is formed among the oil seal (93), the rotating shaft (32) and the second end cover (16).

38. The electric motor of claim 37, wherein said rotor oil outlet (321) further comprises a third rotor oil outlet (321), said third rotor oil outlet (321) being axially located between said second bearing (72) and said oil seal (93).

39. A motor vehicle comprising an electric machine, characterized in that the electric machine is an electric machine according to any of claims 1-38.

Images