Motor, power assembly and vehicle

Abstract

A motor, a power assembly and a vehicle, the motor comprises a stator core, a motor rotor and an oil collecting member, the motor rotor comprises a rotating shaft and a bearing, the stator core is arranged around the rotating shaft, and the bearing sleeves the rotating shaft; the oil collecting piece is arranged on one side of the stator iron core in the axial direction, a containing cavity is formed in the area between the oil collecting piece and one side of the stator iron core, and a first oil outlet hole communicated with the containing cavity is formed in the oil collecting piece; and the oil guide structure is provided with a flow guide channel, and the flow guide channel is used for guiding oil flowing out of the first oil outlet hole to the bearing. According to the motor provided by the invention, the oil flowing out of the first oil outlet hole is guided to the bearing of the motor rotor through the guide channel, so that the stator core is cooled, the bearing is cooled and lubricated, multiple parts are cooled at the same time, and the overall cooling efficiency of the motor is improved.

Description

Technical Field

[0001] The present application relates to the field of motor technology, and in particular to a motor, a powertrain and a vehicle. Background Art

[0002] In hybrid vehicles or pure electric vehicles, the motor is the power source of the vehicle, and the performance and safety of the motor are crucial. The motor includes a motor stator and a motor rotor. The motor stator is the stationary part of the motor. The motor stator includes a stator core and a stator winding. The stator core is used to form a magnetic flux path and embed the stator winding. The stator winding can be supplied with current to generate a magnetic field; due to the magnetic field, the motor rotor rotates inside the motor stator to drive the vehicle.

[0003] The stator core of the motor is generally made of silicon steel stampings with a high silicon content, which are stacked in groups. Losses will be generated during the operation of the motor. These losses will serve as a heat source to heat the motor components, causing the motor temperature to rise, thereby affecting the performance of the motor.

[0004] In the prior art, when the motor is cooled by spraying cooling medium or immersing cooling medium, the cooling efficiency is low and only a few parts can be cooled. Utility Model Content

[0005] The purpose of the present application is to provide a motor, a powertrain and a vehicle to solve the problems of low motor cooling efficiency and few cooling parts.

[0006] To achieve the purpose of this application, this application provides the following technical solutions:

[0007] In a first aspect, the present application provides a motor, comprising:

[0008] stator core;

[0009] The motor rotor comprises a rotating shaft and a bearing, wherein the stator core is arranged around the rotating shaft, and the bearing is sleeved on the rotating shaft;

[0010] An oil collecting member is arranged on one side of the stator core in the axial direction, and a region between the oil collecting member and the one side of the stator core in the axial direction forms a receiving cavity for receiving the winding, and the oil collecting member is provided with a first oil outlet hole communicating with the receiving cavity;

[0011] The oil guide structure comprises a guide channel, wherein the guide channel is used to guide the oil flowing out of the first oil outlet hole to the bearing.

[0012] In one embodiment, the motor further comprises a casing, the stator core is accommodated in the casing, the bearing comprises an inner ring and an outer ring, the inner ring is fixed on the rotating shaft, the outer ring is fixed on the inner wall of the casing, and there is a gap between the inner ring and the outer ring;

[0013] The housing is provided with a first channel, and the flow guide channel, the first channel and the gap are connected in sequence.

[0014] In one embodiment, the motor further comprises a casing and a bearing seat, the stator core is accommodated in the casing, the bearing seat is fixed on the casing, the bearing comprises an inner ring and an outer ring, the inner ring is fixed on the rotating shaft, the outer ring is fixed on the bearing seat, and there is a gap between the inner ring and the outer ring;

[0015] The bearing seat is provided with a second channel, and the guide channel, the second channel and the gap are connected in sequence.

[0016] In one embodiment, the oil guide structure includes an annular protrusion, and the annular protrusion is provided on the outer wall of the oil collecting member along the axial direction of the stator core away from the stator core.

[0017] The oil collecting member and the bearing are located on the same side of the stator core in the axial direction, and the annular protrusion is arranged around the bearing;

[0018] The first oil outlet hole is arranged on the outer wall of the oil collecting member, an oil guide groove is arranged on the radial outer side wall of the annular protrusion, and the flow guide channel is surrounded by the oil guide groove.

[0019] In one embodiment, the guide channel extends along the axial direction of the stator core, and the first oil outlet hole is located on the outer wall of the oil collecting member on the radial outer side of the annular protrusion.

[0020] In one embodiment, the first oil outlet hole extends along the axial direction of the stator core, the opening direction of the oil guide groove faces the radial outer side of the annular protrusion, and the first oil outlet hole is located in the opening direction of the oil guide groove.

[0021] In one embodiment, the oil collecting member includes a first annular plate, a second annular plate and a third annular plate, the first annular plate and the second annular plate are spaced apart in the radial direction of the stator core, and the first annular plate is located outside the second annular plate, the third annular plate is connected between the first annular plate and the second annular plate, and the first annular plate, the second annular plate, the third annular plate and the stator core form the accommodating cavity;

[0022] The third annular plate includes a first side wall and a second side wall which are arranged opposite to each other along the axial direction of the stator core, the first oil outlet hole passes through the first side wall and the second side wall, the first side wall is located in the accommodating cavity, the annular protrusion is arranged on the second side wall, and the first oil outlet hole is arranged on the second side wall between the first annular plate and the annular protrusion.

[0023] In one embodiment, the oil collecting member is provided with an oil inlet and a second oil outlet, the oil inlet and the second oil outlet are both connected to the accommodating cavity, and the flow cross-sectional area of ​​the first oil outlet is smaller than the flow cross-sectional area of ​​the oil inlet;

[0024] The flow cross-sectional area of ​​the first oil outlet hole is smaller than the flow cross-sectional area of ​​the second oil outlet hole, and the height of the second oil outlet hole in the gravity direction is greater than the height of the first oil outlet hole in the gravity direction.

[0025] In a second aspect, the present application also provides a powertrain, comprising the motor as described in the first aspect.

[0026] In a third aspect, the present application further provides a vehicle, comprising the motor as described in the first aspect or the powertrain as described in the second aspect.

[0027] The motor provided by the present application is provided with an oil collecting piece on one axial side of the stator core, and the area between the oil collecting piece and one side of the stator core forms a accommodating cavity, and the accommodating cavity can cool the winding and the end of the stator core; and a first oil outlet hole and an oil guiding structure with a guide channel are provided on the oil collecting piece, the first oil outlet hole is connected with the accommodating cavity, and the guide channel is used to guide the oil flowing out of the first oil outlet hole to the bearing of the motor rotor, thereby cooling the stator core and cooling and lubricating the bearing, realizing simultaneous cooling of multiple components, and improving the overall cooling efficiency of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 A cross-sectional view of a motor according to an embodiment of the present application;

[0030] Figure 2 This is a structural stereogram of an oil collecting member according to an embodiment of the present application;

[0031] Figure 3 A cross-sectional view of an oil collecting member according to an embodiment of the present application;

[0032] Figure 4 A three-dimensional view of an oil collecting member according to an embodiment of the present application from another perspective;

[0033] Figure 5 A side view of a motor according to an embodiment of the present application.

[0034] Description of reference numerals:

[0035] 100, housing; 110, oil inlet; 120, third channel; 200, motor stator; 210, stator core; 211, lug; 212, stator slot; 220, winding; 310, rotor core; 320, shaft; 330, bearing; 331, inner ring; 332, outer ring; 333, rolling element; 334, gap; 400, oil collecting member; 410, accommodating chamber; 420, first oil outlet; 430, Guide channel; 440, annular protrusion; 450, first annular plate; 451, second oil outlet hole; 460, second annular plate; 461, second convex edge; 470, third annular plate; 471, first side wall; 472, second side wall; 473, wire hole; 480, oil inlet; 500, bearing seat; 510, second channel; 600, insulating sleeve; 610, mounting hole; 620, first convex edge; 700, sealing ring. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0037] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there can be a central component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there can be a central component at the same time.

[0038] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in this application and in the specification are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in this application includes any and all combinations of one or more of the related listed items.

[0039] In conjunction with the accompanying drawings, some embodiments of the present application are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0040] The present application provides a vehicle, which includes a powertrain and a frame. The powertrain is installed on the frame, and the powertrain provides power to the vehicle to drive the vehicle.

[0041] The powertrain includes the engine, motor, gearbox, drive shaft, differential and clutch. The engine generates power by burning fuel, while the motor converts electrical energy into mechanical energy. Both power sources can provide the required driving force for the vehicle. The clutch engages or disengages between the engine or motor and the gearbox to ensure that the power of the engine or motor can be smoothly transmitted to the gearbox, while allowing the driver to disconnect the engine or motor from the gearbox when necessary for gear shifting. Through the gearbox, the power of the engine or motor can be properly adjusted so that the vehicle can maintain the best power output at different speeds and loads. The drive shaft transfers torque from the gearbox to the wheels, thereby moving the vehicle. The differential enables the two drive wheels of the vehicle to rotate at different speeds when turning or under different road conditions, which helps maintain the stability and handling of the vehicle.

[0042] In hybrid vehicles or pure electric vehicles, the motor is the main power source of the vehicle, and the performance and safety of the motor are crucial. The motor consists of a motor stator and a motor rotor. The motor stator can be supplied with current to generate a magnetic field, thereby driving the motor rotor to rotate. The motor rotor's shaft is mounted on the motor housing through bearings. During the operation of the motor, the motor stator generates a lot of heat, and the rotation of the shaft also causes the bearing to heat up.

[0043] In the prior art, when the motor stator is cooled by spraying a cooling medium or immersing a cooling medium, the bearings of the motor rotor cannot be cooled and lubricated at the same time, resulting in low overall cooling efficiency of the motor.

[0044] refer to Figure 1 and Figure 2 The present application provides a motor, which includes a housing 100, a motor stator 200, a motor rotor, an oil collecting member 400 and an oil guide structure. The housing 100 is used to be connected to a vehicle frame, and the motor stator 200 is accommodated in the housing 100.

[0045] The motor stator 200 includes a stator core 210 and a winding 220 . The stator core 210 is used to form a magnetic flux path and embed the winding 220 . When the winding 220 is energized, a magnetic field is formed in the winding 220 .

[0046] The motor rotor includes a rotor core 310, a rotating shaft 320 and a bearing 330. The rotor core 310 is accommodated in the stator core 210, the rotating shaft 320 is inserted in the rotor core 310, and the bearing 330 is sleeved on the rotating shaft 320, and the bearing 330 is located on one side of the rotor core 310 along the axial direction. The rotating shaft 320 is installed on the housing 100 through the bearing 330. The rotor core 310 and the rotating shaft 320 can rotate under the magnetic field of the motor stator 200. The rotating shaft 320 is connected to the gearbox of the vehicle, and the torque is transmitted from the gearbox to the wheels through components such as the drive shaft, so that the vehicle moves.

[0047] The oil collecting member 400 is arranged on one side of the stator core 210 along the axial direction, and the oil collecting member 400 and the bearing 330 are located on the same side of the stator core 210. The area between the oil collecting member 400 and one side of the stator core 210 forms a accommodating cavity 410. The end of the winding 220 is accommodated in the accommodating cavity 410, and the bearing 330 is located outside the accommodating cavity 410. Oil is injected into the accommodating cavity 410 to cool the end of the stator core 210 and the end of the winding 220.

[0048] It should be noted that the oil in the accommodating cavity 410 may be other cooling media, such as water, gas, etc.

[0049] The oil collecting member 400 may be connected to one side of the housing 100 in the axial direction, so that the area between the oil collecting member 400 and the stator core 210 forms a receiving chamber 410; or the oil collecting member 400 is arranged inside the housing 100, and the oil collecting member 400 is directly sleeved on one side of the stator core 210 in the axial direction, so that the oil collecting member 400 and the stator core 210 form a receiving chamber 410. The oil collecting member 400 is provided with a first oil outlet 420, which is in communication with the receiving chamber 410, and can discharge the oil from the receiving chamber 410 to realize the circulation of the oil.

[0050] The oil guide structure has a guide channel 430, which is used to guide the oil flowing out of the first oil outlet 420 to the bearing 330, so as to cool and lubricate the bearing 330. Thus, the stator core 210 and the winding 220 are cooled and the bearing 330 is cooled and lubricated, and multiple components are cooled at the same time, thereby improving the cooling efficiency of the entire motor.

[0051] It should be noted that when cooling the bearing 330, the guide channel 430 only needs to guide the oil flowing out of the first oil outlet 420 to a position where the oil can contact the bearing 330. When the bearing 330 needs to be lubricated, the oil flowing out of the first oil outlet 420 needs to be guided to the inside of the bearing 330.

[0052] refer to Figure 1 , Figure 2 and Figure 5In the motor provided in the present application, the motor further includes a bearing seat 500, and the bearing seat 500 is fixed on the housing 100. The bearing 330 can be directly fixed on the housing 100, or the bearing 330 is connected to the housing 100 through the bearing seat 500.

[0053] The bearing 330 includes an inner ring 331, an outer ring 332, rolling elements 333 and a retainer. The inner ring 331 is fixed on the housing 100 or the bearing seat 500. The outer ring 332 is tightly matched with the rotating shaft 320 and rotates with the rotating shaft 320. There is a gap 334 between the inner ring 331 and the outer ring 332. The rolling elements 333 are accommodated in the gap 334 to convert sliding friction into rolling friction and reduce friction loss. The rolling elements 333 can be balls or rollers. The retainer keeps the rolling elements 333 at an equal distance in the raceway of the inner ring 331 or the outer ring 332, and guides the rolling elements 333 to roll on the correct raceway.

[0054] In the case where the bearing 330 is directly fixed on the housing 100, a first channel is provided on the housing 100, and the guide channel 430, the first channel and the gap 334 are connected in sequence to guide the oil to the bearing 330, so as to realize the cooling inside the bearing 330 and lubricate the rolling element 333, and reduce the friction and wear between the rolling element 333 and the inner ring 331 and the outer ring 332. It should be noted that when the guide channel 430, the first channel and the gap 334 are connected in sequence, other areas may be left between the guide channel 430 and the first channel, and other areas may be left between the first channel and the gap 334, that is, when the oil flows along the guide channel 430 and the first channel to the gap 334, it is only necessary to ensure that part of the oil flows to the gap 334, and part of the oil may flow to other areas during this period.

[0055] When the bearing 330 is fixed on the bearing seat 500, a second channel 510 is provided on the bearing seat 500, and the guide channel 430 and the second channel 510 are connected to the guide channel 430 and the gap 334 in sequence, and the oil is guided to the bearing 330, which can also achieve cooling and lubrication of the bearing 330. It should be noted that when the guide channel 430, the second channel 510 and the gap 334 are connected in sequence, other areas may be left between the guide channel 430 and the second channel 510, and other areas may be left between the second channel 510 and the gap 334, that is, when the oil flows along the guide channel 430 and the second channel 510 to the gap 334, it is only necessary to ensure that part of the oil flows to the gap 334, and part of the oil can flow to other areas during this period.

[0056] refer to Figure 1 , Figure 2 and Figure 3The oil guide structure includes an annular protrusion 440, which is arranged on the outer wall of the oil collecting member 400 along the axial direction of the stator core 210 away from the stator core 210, and the annular protrusion 440 is arranged around the bearing 330; the first oil outlet 420 is arranged on the outer wall of the oil collecting member 400, and an oil guide groove is arranged on the radial outer wall of the annular protrusion 440, and the guide channel 430 is surrounded by the oil guide groove. The annular protrusion 440 convexly arranged on the outer wall of the oil collecting member 400 can abut against the inner wall of the housing 100 or the inner wall of the bearing seat 500, so as to achieve the sealing between the oil collecting member 400 and the housing 100 or the bearing seat 500, and inhibit the oil flowing out of the first oil outlet 420 from entering the motor rotor. The guide channel 430 is arranged on the annular protrusion 440, so that the oil in the guide channel 430 is directly guided to the first channel on the housing 100 or the second channel 510 on the bearing seat 500.

[0057] The first oil outlet hole 420 extends along the axial direction of the stator core 210, the guide channel 430 extends along the axial direction of the stator core 210, and the first oil outlet hole 420 is located on the outer wall of the oil collecting member 400 radially outward of the annular protrusion 440. Specifically, the first oil outlet hole 420 is extended along the bearing 330 of the stator core 210 to limit the outflow direction of the oil in the accommodating cavity 410, so that the oil flowing out of the first oil outlet hole 420 can enter the guide channel 430, and the guide channel 430 extends along the axial direction of the stator core 210, so that the oil continues to flow in the guide channel 430 along the axial direction of the stator core 210, and the oil is prevented from splashing out of the guide channel 430.

[0058] Optionally, the opening direction of the oil guide groove faces the radial outer side of the annular protrusion 440, and the first oil outlet hole 420 is located in the opening direction of the oil guide groove, so that the oil flowing out of the first oil outlet hole 420 can fall into the guide channel 430 under the action of gravity, and the oil is guided to the bearing 330 along the guide channel 430. Among them, a plurality of first oil outlet holes 420 can be provided, and the plurality of first oil outlet holes 420 are all located in the opening direction of the oil guide groove.

[0059] In the motor provided in the present application, the oil collecting member 400 includes a first annular plate 450, a second annular plate 460 and a third annular plate 470, the first annular plate 450 and the second annular plate 460 are spaced apart in the radial direction of the stator core 210, and the first annular plate 450 is located on the outer side of the second annular plate 460, and the third annular plate 470 is connected between the first annular plate 450 and the second annular plate 460; the third annular plate 470 includes a first side wall 471 and a second side wall 472 which are arranged opposite to each other along the axial direction of the stator core 210, the first oil outlet hole 420 passes through the first side wall 471 and the second side wall 472, the first side wall 471 is located in the accommodating cavity 410, the annular protrusion 440 is arranged on the second side wall 472, and the first oil outlet hole 420 is arranged on the second side wall 472 between the first annular plate 450 and the annular protrusion 440. Specifically, the third annular plate 470 is connected to the same end of the first annular plate 450 and the second annular plate 460 in the axial direction of the stator core 210, and the side wall of the first annular plate 450 close to the second annular plate 460, the side wall of the second annular plate 460 close to the first annular plate 450, the first side wall 471 and the stator core 210 form an accommodating cavity 410, and the guide channel 430 is set on the annular protrusion 440 on the third annular plate 470 to guide the oil and prevent the oil from flowing along the radial outer wall of the annular protrusion 440.

[0060] The oil collecting member 400 is provided with an oil inlet 480 and a second oil outlet 451, both of which are connected to the accommodating cavity 410, and the flow cross-sectional area of ​​the first oil outlet 420 is smaller than the flow cross-sectional area of ​​the oil inlet 480. The flow cross-sectional area of ​​the first oil outlet 420 refers to the cross-sectional area perpendicular to the extension direction of the first oil outlet 420, and the flow cross-sectional area of ​​the oil inlet 480 refers to the cross-sectional area perpendicular to the extension direction of the oil inlet 480. When the oil flows through the oil inlet 480 and the first oil outlet 420, the oil inlet 480 provides a larger plane area for the oil to pass through than the first oil outlet 420, so that the oil inlet efficiency of the oil inlet 480 is greater than the oil outlet efficiency of the first oil outlet 420, so that after the oil enters the oil collecting member 400 through the oil inlet 480, it is ensured that the oil can form a certain liquid level in the oil collecting member 400 to cool the winding 220 in an immersion manner. While the winding 220 is immersed in cooling, a portion of the oil can flow to the bearing 330 through the first oil outlet hole 420 to cool and lubricate the bearing 330 .

[0061] The flow cross-sectional area of ​​the first oil outlet hole 420 is smaller than the flow cross-sectional area of ​​the second oil outlet hole 451. The flow cross-sectional area of ​​the first oil outlet hole 420 refers to the cross-sectional area perpendicular to the extension direction of the first oil outlet hole 420, and the flow cross-sectional area of ​​the second oil outlet hole 451 refers to the cross-sectional area perpendicular to the extension direction of the second oil outlet hole 451. When the oil flows into the first oil outlet hole 420 and the second oil outlet hole 451, the second oil outlet hole 451 provides a larger plane area for the oil to pass through than the first oil outlet hole 420, so that the oil outlet efficiency of the first oil outlet hole 420 is smaller than the oil outlet efficiency of the second oil outlet hole 451. For example, the aperture of the first oil outlet hole 420 is smaller than the aperture of the second oil outlet hole 451.

[0062] Because only a portion of oil is needed for lubrication of the bearing 330, that is, the oil outlet efficiency of the first oil outlet hole 420 does not need to be too high, and under the premise of ensuring the immersion cooling of the winding 220, it is necessary to continue to supply oil to ensure the fluidity of the oil, so the second oil outlet hole 451 is provided as the main oil outlet of the accommodating cavity 410. And the height of the second oil outlet hole 451 in the gravity direction is greater than the height of the first oil outlet hole 420 in the gravity direction, so that when the oil is filled into the oil collecting member 400 through the oil inlet 480, the oil level reaches the first oil outlet hole 420 and the second oil outlet hole 451 in turn, so that part of the oil can flow out from the first oil outlet hole 420 to the bearing 330.

[0063] Optionally, the second oil outlet hole 451 is provided on the first annular plate 450, and the second oil outlet hole 451 penetrates the first annular plate 450 in the radial direction of the stator core 210. In one embodiment, the motor includes two oil collecting members 400 and two bearings 330, wherein one oil collecting member 400 is located on one side of the axial direction of the stator core 210 and forms an accommodating cavity 410 with the region between the one side of the stator core 210, and the other oil collecting member 400 is located on the other side of the axial direction of the stator core 210 and forms another accommodating cavity 410 with the region between the stator core 210, and the two ends of the winding 220 are respectively accommodated in the two accommodating cavities 410. And one of the bearings 330 is directly fixed on the housing 100, and the other bearing 330 is connected to the housing 100 through the bearing seat 500.

[0064] refer to Figure 1 and Figure 4 The third annular plate 470 is provided with a wire hole 473 which penetrates the stator core 210 axially through the third annular plate 470 . The lead wire of the winding 220 in the accommodating cavity 410 can pass through the wire hole 473 and be connected to an external circuit to supply power to the winding 220 .

[0065] refer to Figure 1 , Figure 3 and Figure 5, the housing 100 is provided with an oil inlet hole 110, and a third channel 120 is provided inside the stator core 210 and / or between the outer wall of the stator core 210 and the inner wall of the housing 100, and the third channel 120 connects the oil inlet hole 110 and the two accommodating chambers 410. Specifically, the third channel 120 can be opened only inside the stator core 210, so that the third channel 120 is connected with the accommodating chambers 410 on both sides of the stator core 210, thereby increasing the heat dissipation area of ​​the stator core 210, directly cooling the stator core 210 and the winding 220, and improving the temperature rise of the motor. Alternatively, the third channel 120 is provided between the outer wall of the stator core 210 and the inner wall of the housing 100, and in this case, the third channel 120 can be surrounded by the outer wall of the lug 211 of the stator core 210 and the inner wall of the housing 100. Alternatively, a third channel 120 is provided both inside the stator core 210 and between the stator core 210 and the housing 100 to further enhance the cooling effect on the stator core 210 .

[0066] In the motor provided in the present application, the motor also includes an insulating sleeve 600 and a sealing ring 700. The stator core 210 is provided with a stator slot 212 extending axially along the stator core 210. The insulating sleeve 600 is inserted in the stator slot 212. The insulating sleeve 600 is provided with a mounting hole 610 extending axially along the stator core 210. The winding 220 is inserted in the mounting hole 610, and one end of the winding 220 is accommodated in the accommodating cavity 410. The first annular plate 450 is connected to the inner wall of the casing 100, and the second annular plate 460 is connected to the insulating sleeve 600 to achieve sealing between the stator core 210, the casing 100 and the oil collecting part 400 to inhibit oil leakage.

[0067] Among them, the insulating sleeve 600 is provided with a first flange 620 at one end in the axial direction of the stator core 210, and the second annular plate 460 is provided with a second flange 461 at one end close to the stator core 210. The first flange 620 and the second flange 461 are both arranged along the circumference of the stator core 210, and the first flange 620 and the second flange 461 are spaced apart in the radial direction of the stator core 210. The sealing ring 700 is connected between the first flange 620 and the second flange 461 to improve the sealing between the stator core 210, the casing 100 and the oil collecting member 400.

[0068] In the description of the embodiments of the present application, it should be noted that the orientation or positional relationship of terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the orientation or positional relationship described in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0069] What is disclosed above is only a preferred embodiment of the present application, and it certainly cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiment and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A motor, characterized in that: include: stator core; The motor rotor comprises a rotating shaft and a bearing, wherein the stator core is arranged around the rotating shaft, and the bearing is sleeved on the rotating shaft; An oil collecting member is arranged on one side of the stator core in the axial direction, and a region between the oil collecting member and the one side of the stator core in the axial direction forms a receiving cavity for receiving the winding, and the oil collecting member is provided with a first oil outlet hole communicating with the receiving cavity; The oil guide structure comprises a guide channel, wherein the guide channel is used to guide the oil flowing out of the first oil outlet hole to the bearing.

2. The motor according to claim 1, characterized in that The motor further comprises a casing, the stator core is accommodated in the casing, the bearing comprises an inner ring and an outer ring, the inner ring is fixed on the rotating shaft, the outer ring is fixed on the inner wall of the casing, and there is a gap between the inner ring and the outer ring; The housing is provided with a first channel, and the flow guide channel, the first channel and the gap are connected in sequence.

3. The motor according to claim 1, characterized in that The motor further comprises a casing and a bearing seat, wherein the stator core is accommodated in the casing, the bearing seat is fixed on the casing, the bearing comprises an inner ring and an outer ring, the inner ring is fixed on the rotating shaft, the outer ring is fixed on the bearing seat, and there is a gap between the inner ring and the outer ring; The bearing seat is provided with a second channel, and the guide channel, the second channel and the gap are connected in sequence.

4. The motor according to claim 1, characterized in that The oil guide structure comprises an annular protrusion, and the annular protrusion is arranged on the outer wall of the oil collecting member along the axial direction of the stator core away from the stator core. The oil collecting member and the bearing are located on the same side of the stator core in the axial direction, and the annular protrusion is arranged around the bearing; The first oil outlet hole is arranged on the outer wall of the oil collecting member, an oil guide groove is arranged on the radial outer side wall of the annular protrusion, and the flow guide channel is surrounded by the oil guide groove.

5. The motor according to claim 4, characterized in that The flow guide channel extends along the axial direction of the stator core, and the first oil outlet hole is located on the outer wall of the oil collecting member on the radial outer side of the annular protrusion.

6. The motor according to claim 5, characterized in that The first oil outlet hole extends along the axial direction of the stator core, the opening direction of the oil guide groove faces the radial outer side of the annular protrusion, and the first oil outlet hole is located in the opening direction of the oil guide groove.

7. The motor according to claim 4, characterized in that The oil collecting member comprises a first annular plate, a second annular plate and a third annular plate, wherein the first annular plate and the second annular plate are spaced apart in the radial direction of the stator core, and the first annular plate is located outside the second annular plate, and the third annular plate is connected between the first annular plate and the second annular plate, and the first annular plate, the second annular plate, the third annular plate and the stator core form the accommodating cavity; The third annular plate includes a first side wall and a second side wall which are arranged opposite to each other along the axial direction of the stator core, the first oil outlet hole passes through the first side wall and the second side wall, the first side wall is located in the accommodating cavity, the annular protrusion is arranged on the second side wall, and the first oil outlet hole is arranged on the second side wall between the first annular plate and the annular protrusion.

8. The motor according to claim 1, characterized in that The oil collecting member is provided with an oil inlet and a second oil outlet, the oil inlet and the second oil outlet are both connected to the accommodating cavity, and the flow cross-sectional area of ​​the first oil outlet is smaller than the flow cross-sectional area of ​​the oil inlet; The flow cross-sectional area of ​​the first oil outlet hole is smaller than the flow cross-sectional area of ​​the second oil outlet hole, and the height of the second oil outlet hole in the gravity direction is greater than the height of the first oil outlet hole in the gravity direction.

9. A powertrain, characterized in that: Comprising a motor as claimed in any one of claims 1 to 8.

10. A vehicle, characterized in that: It comprises the motor as claimed in any one of claims 1 to 8 or the power assembly as claimed in claim 9.

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