Motor assembly and vehicle

Abstract

The utility model discloses a motor assembly and a vehicle, the motor assembly comprises a stator assembly and a rotor assembly, the stator assembly is sleeved outside the rotor assembly, the rotor assembly comprises a rotor shaft, a rotor iron core and two oil slingers, the rotor iron core and the oil slingers are sleeved outside the rotor shaft, and the two oil slingers are respectively located at the end parts of the rotor iron core; the rotor shaft is provided with a cooling flow channel and an oil outlet communicated with the cooling flow channel, the rotor iron core is provided with a middle flow channel, one of the two oil slingers is provided with an axial oil outlet hole and a radial oil outlet hole, and the other oil slinger is provided with an inclined oil outlet hole. And oil at the oil outlet is suitable for flowing to the axial oil outlet hole and the radial oil outlet hole of one oil slinger and flowing to the inclined oil outlet hole of the other oil slinger through the middle runner. According to the motor assembly provided by the utility model, the cooling oil path is simple in structure and does not need to occupy extra space, so that the bearing can be effectively lubricated and cooled, and the stator coil and the end part of the rotor iron core can be effectively cooled.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a motor assembly and a vehicle. Background Art

[0002] The three-phase asynchronous motor has become a new choice for automotive motors due to its low cost and simple process. However, it has the characteristic of high rotor temperature during operation, and the existing cooling methods mostly use water cooling, oil cooling through injection pipes or stirring oil cooling.

[0003] Water-cooled asynchronous motors are often far away from the rotor body and need to rely on heat exchange between the air inside the motor and the water jacket of the casing to remove heat. The rotor heat dissipation effect is poor, and the cast aluminum rotor and bearings are at risk of failure. The traditional oil injection pipe cooling structure is relatively complex and needs to rely on oil pipes for oil injection. It is not easy to install and requires a certain amount of internal space. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a motor assembly and a vehicle, wherein the cooling oil circuit has a simple structure, does not require a complicated oil pipe design, and does not require additional space to achieve lubrication and cooling of the bearings and effective cooling of the stator coil and the end of the rotor core.

[0005] According to the embodiment of the utility model, the motor assembly includes: a stator assembly and a rotor assembly, wherein the stator assembly is sleeved outside the rotor assembly, and the rotor assembly includes a rotor shaft, a rotor core and two oil slingers, wherein the rotor core and the oil slingers are sleeved outside the rotor shaft, and the two oil slingers are respectively located at the ends of the rotor core; the rotor shaft is provided with a cooling flow channel and an oil outlet connected to the cooling flow channel, the rotor core is provided with an intermediate flow channel, one of the two oil slingers is provided with an axial oil outlet hole and a radial oil outlet hole, and the other oil slinger is provided with an oblique oil outlet hole, and the oil at the oil outlet is suitable for flowing to the axial oil outlet hole and the radial oil outlet hole of the one oil slinger and flowing to the oblique oil outlet hole of the other oil slinger through the intermediate flow channel.

[0006] According to the motor assembly of the embodiment of the utility model, oil enters from the cooling flow channel of the rotor shaft, and is finally connected with the intermediate flow channel of the oil slinger ring and the rotor core through the oil outlet. Lubrication and cooling of the bearing are achieved through the axial oil outlet hole of the oil slinger ring, and the end of the stator coil is cooled through the radial oil outlet hole of the oil slinger ring, and the end of the rotor core is cooled through the oblique oil outlet hole of the oil slinger ring. The overall structure is simple, does not require complex oil pipe design, and does not occupy additional space.

[0007] According to the motor assembly of the embodiment of the utility model, the two oil slingers are respectively the first oil slinger and the second oil slinger, and the first oil slinger and the second oil slinger are both provided with the axial oil outlet hole, the radial oil outlet hole and the oblique oil outlet hole; wherein, the oil outlet is at least one group and each group is two, and the intermediate flow channel is at least one group and each group is two, and the oil at one oil outlet of each group is suitable for flowing to the axial oil outlet hole and radial oil outlet hole of the first oil slinger and flowing to the oblique oil outlet hole of the second oil slinger through one intermediate flow channel of each group, and the oil at another oil outlet of each group is suitable for flowing to the axial oil outlet hole and radial oil outlet hole of the second oil slinger and flowing to the oblique oil outlet hole of the first oil slinger through another intermediate flow channel of each group.

[0008] According to the motor assembly of the embodiment of the utility model, the oil slinger ring includes a first oil slinger channel and a second oil slinger channel spaced circumferentially, the axial oil outlet hole is connected to the first oil slinger channel, the radial oil outlet hole is arranged on the side wall of the first oil slinger channel, and the oblique oil outlet hole is connected to the second oil slinger channel.

[0009] According to the motor assembly of the embodiment of the utility model, the oil slinger ring is further provided with a radially arranged transition channel, and the oil outlet is connected to the first oil slinger channel through the transition channel.

[0010] According to the motor assembly of the embodiment of the utility model, the oil slinger ring is partially located on the inner circumferential wall of the rotor core and partially extends outside the rotor core, the first oil slinger channel extends axially along the oil slinger ring to the outside of the rotor core, and the radial oil outlet hole is located at a position where the first oil slinger channel is located outside the rotor core, and the second oil slinger channel of the oil slinger ring is located on the inner periphery of the rotor core.

[0011] According to the motor assembly of the embodiment of the utility model, the oil outlet and the intermediate flow channel are both arranged in three groups, and each of the oil slinger rings has three first oil slinger channels and three second oil slinger channels, wherein the first oil slinger channel of one oil slinger ring and the second oil slinger channel of another oil slinger ring are axially opposite to each other.

[0012] According to the motor assembly of the embodiment of the utility model, the three first oil-slinging channels of each oil-slinging ring are distributed at equal distances along the circumference of the oil-slinging ring, the three second oil-slinging channels of each oil-slinging ring are distributed at equal distances along the circumference of the oil-slinging ring, and the three first oil-slinging channels and the three second oil-slinging channels of each oil-slinging ring are distributed alternately one by one.

[0013] According to the embodiment of the utility model, the motor assembly also includes a motor housing, and a first opening is provided on one side of the lower part of the motor housing. The first opening is connected to the axial oil outlet hole, the radial oil outlet hole and the oblique oil outlet hole, and the first opening discharges the oil.

[0014] According to the motor assembly of the embodiment of the utility model, the motor housing also includes a housing oil channel, which is arranged at the bottom of the motor housing. The housing oil channel is provided with a second opening. The housing oil channel collects oil from the stator assembly and the rotor assembly, and discharges the oil through the second opening.

[0015] The utility model embodiment also discloses a vehicle, comprising the above-mentioned motor assembly.

[0016] The advantages of the vehicle assembly described above over the prior art and the advantages of the motor assembly described above over the prior art are the same and will not be elaborated herein.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 It is a structural schematic diagram of oil slingers connected to both ends of the rotor shaft of the embodiment of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure in which one end of the rotor shaft of an embodiment of the utility model is connected to an oil slinger;

[0021] Figure 3 It is a schematic cross-sectional structure diagram of a rotor core of an embodiment of the utility model installed on a rotor shaft;

[0022] Figure 4 It is a cross-sectional structural schematic diagram of a motor assembly according to an embodiment of the utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the oil slinger of the embodiment of the utility model;

[0024] Figure 6 This is a schematic structural diagram of the oil slinger in another perspective of an embodiment of the utility model;

[0025] Figure 7 It is a cross-sectional schematic diagram of the connection structure of the rotor assembly and the stator assembly of an embodiment of the utility model.

[0026] Reference numerals:

[0027] Motor assembly 100, rotor assembly 101, stator assembly 102,

[0028] Rotor shaft 1, cooling channel 11, oil outlet 12, transition channel 13, oil slinger 2, first oil slinger 21, second oil slinger 22, radial oil outlet hole 23, axial oil outlet hole 24, oblique oil outlet hole 25, second oil slinger channel 26, first oil slinger channel 27, bearing 3, rotor core 4, intermediate channel 41, end ring 42, stator coil 5, motor housing 6, housing oil channel 61, first opening 62, second opening 63, reducer input shaft 7. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0030] Reference below Figure 1-Figure 7 Describe the motor assembly 100 according to the embodiment of the utility model. The oil enters from the cooling channel 11 of the rotor shaft 1, and is finally connected with the intermediate channel 41 of the oil slinger 2 and the rotor core 4 through the oil outlet 12. The lubrication and cooling of the bearing 3 is achieved through the axial oil outlet hole 24 of the oil slinger 2, and the end of the stator coil 5 is cooled through the radial oil outlet hole 23 of the oil slinger 2, and the end of the rotor core 4 is cooled through the oblique oil outlet hole 25 of the oil slinger 2. The overall structure is simple, does not require complex oil pipe design, and does not occupy additional space.

[0031] like Figure 1-7 As shown, the motor assembly 100 of the embodiment of the present invention includes: a stator assembly 102 and a rotor assembly 101 .

[0032] Among them, the stator assembly 102 is sleeved outside the rotor assembly 101, and the rotor assembly 101 includes a rotor shaft 1, a rotor core 4 and two oil slingers 2. The rotor core 4 and the oil slinger 2 are both sleeved outside the rotor shaft 1, and the two oil slingers 2 are respectively located at the ends of the rotor core 4; the rotor shaft 1 is provided with a cooling flow channel 11 and an oil outlet 12 connected to the cooling flow channel 11, the rotor core 4 is provided with an intermediate flow channel 41, one of the two oil slingers 2 is provided with an axial oil outlet hole 24 and a radial oil outlet hole 23, and the other oil slinger 2 is provided with an oblique oil outlet hole 25, and the oil at the oil outlet 12 is suitable for flowing to the axial oil outlet hole 24 and the radial oil outlet hole 23 of one oil slinger 2 and flowing to the oblique oil outlet hole 25 of the other oil slinger 2 through the intermediate flow channel 41.

[0033] In practice, the stator assembly 102 includes flat wire, stator core, insulating paper and other parts, which are assembled into an armature through multiple processes and then interference fit with the motor housing. The flat wire is placed in the stator core through insulating paper, and the flat wire is wound to form a stator coil 5. The stator assembly 102 is sleeved on the outside of the rotor assembly 101, that is, the stator coil 5 is sleeved on the outside of the rotor core 4 of the rotor assembly 101, and the end temperature of the stator coil 5 is generally high and needs to be cooled; in addition, bearings 3 are also provided at both ends of the rotor shaft 1, and the bearings 3 can support the rotor shaft 1. The bearings 3 are located on the axial outside of the oil slinger 2 of the rotor shaft 1, and are prone to heat up during friction rotation. High temperature can cause the bearings 3 to deform and damage, resulting in failure of the entire machine.

[0034] Specifically, the axial oil outlet hole 24 on each oil slinger 2 faces the bearing 3 at the corresponding end, and the radial oil outlet hole 23 on each oil slinger 2 faces the end of the stator coil 5, and the oblique oil outlet hole 25 on each oil slinger 2 faces the end of the rotor core 4 at the corresponding end. In practice, the oil inside the rotor shaft 1 flows from the axial oil outlet hole 24 in an oil slinger 2 to the bearing 3 on the corresponding side through the oil outlet 12, and the oil inside the rotor shaft 1 also flows from the radial oil outlet hole 23 in an oil slinger 2 to the end of the stator coil 5 on the corresponding side through the oil outlet 12, so as to cool the end of the stator coil 5 on the corresponding side. When cooling the end of the rotor core 4, the oil flows from the oil outlet 12 of the rotor shaft 1 to the middle flow channel 41 of the rotor core 4, and flows from the middle flow channel 41 of the rotor core 4 to the oblique oil outlet hole 25, so that the oil entering from one end of the rotor shaft 1 flows to the oil slinger 2 at the other end to cool the end of the rotor core 4 at the other end.

[0035] Furthermore, the two ends of the stator coil 5 are respectively the wire-outlet end coil and the non-wire-outlet end coil, that is, the oil flowing out of the radial oil outlet hole 23 of one oil slinger 2 is directed toward the wire-outlet end coil of the stator coil 5, and the oil flowing out of the radial oil outlet hole 23 of the other oil slinger 2 is directed toward the non-wire-outlet end coil of the stator coil 5, so as to realize cooling of both ends of the stator coil 5; and the end of the rotor core 4 is provided with an end ring 42, that is, the oil flowing out of the oil outlet 12 at one end flows to the oblique oil outlet hole 25 of the oil slinger 2 at the other end through the middle flow channel 41 of the rotor core 4, and flows to the end ring 42 on the corresponding side through the oblique oil outlet hole 25.

[0036] In addition, the embodiment of the utility model connects the oil slinger 2 with the end keyway of the rotor shaft 1. For example, the inner ring of the oil slinger 2 is provided with a locating key, and the rotor shaft 1 is provided with a corresponding locating groove. If two locating keys are provided, two locating grooves are provided at corresponding positions of the rotor shaft 1. The two locating keys are arranged symmetrically at 180°. The oil slinger 2 is connected with the end keyway of the rotor shaft 1, which makes the installation and disassembly of the oil slinger 2 and the rotor shaft 1 more convenient.

[0037] Therefore, in the motor assembly 100 of the embodiment of the utility model, oil enters from the cooling channel 11 of the rotor shaft 1, and is finally connected with the intermediate channel 41 of the oil slinger 2 and the rotor core 4 through the oil outlet 12, and the bearing 3 is cooled through the axial oil outlet hole 24 of the oil slinger 2, and the end of the stator coil 5 is cooled through the radial oil outlet hole 23 of the oil slinger 2, and the end of the rotor core 4 is cooled through the oblique oil outlet hole 25 of the oil slinger 2. The overall structure is simple, does not require complex oil pipe design, and does not occupy additional space.

[0038] In some embodiments, the two oil slingers 2 are respectively a first oil slinger 21 and a second oil slinger 22, and the first oil slinger 21 and the second oil slinger 22 are both provided with an axial oil outlet hole 24, a radial oil outlet hole 23, and an oblique oil outlet hole 25; wherein, the oil outlet 12 is at least one group and each group has two, and the intermediate flow channel 41 is at least one group and each group has two, and the oil at one oil outlet 12 of each group is suitable for flowing to the axial oil outlet hole 24 and the radial oil outlet hole 23 of the first oil slinger 21 and flowing to the oblique oil outlet hole 25 of the second oil slinger 22 through one intermediate flow channel 41 of each group, and the oil at another oil outlet 12 of each group is suitable for flowing to the axial oil outlet hole 24 and the radial oil outlet hole 23 of the second oil slinger 22 and flowing to the oblique oil outlet hole 25 of the first oil slinger 21 through another intermediate flow channel 41 of each group.

[0039] In practice, when the first oil slinger 21 is located at the left end of the rotor shaft 1 and the second oil slinger 22 is located at the right end of the rotor shaft 1, and the oil outlet 12 and the intermediate flow channel 41 are both a group, that is, the left end and the right end of the rotor shaft 1 are each provided with an oil outlet 12 to form a group of oil outlets 12, and there are two intermediate flow channels 41, the oil in the oil outlet 12 at the left end is suitable for flowing to the axial oil outlet hole 24 of the first oil slinger 21 to cool the bearing 3 outside the first oil slinger 21. Cooling and lubrication, and the oil flowing out of the oil outlet 12 at the left end also flows to the radial oil outlet holes 23 of the first oil slinger 21 to cool the left end of the stator coil 5; similarly, the oil flowing out of the oil outlet 12 at the right end is suitable for flowing to the axial oil outlet holes 24 of the second oil slinger 22 to cool the bearing 3 outside the second oil slinger 22, and the oil flowing out of the oil outlet 12 at the right end is suitable for flowing to the radial oil outlet holes 23 of the second oil slinger 22 to cool the right end of the stator coil 5.

[0040] In addition, the oil flowing out of an oil outlet 12 at the left end can flow through an intermediate flow channel 41 of the rotor core 4 to the oblique oil outlet hole 25 of the second oil slinger 22 at the right end, so as to cool the right end ring 42 of the rotor core 4 at the right end; at the same time, the oil flowing out of an oil outlet 12 at the right end can flow through another intermediate flow channel 41 of the rotor core 4 to the oblique oil outlet hole 25 of the first oil slinger 21, and the oil flowing out of the oblique oil outlet hole 25 of the first oil slinger 21 cools the left end ring 42 of the rotor core 4, so as to realize convection cooling of the left and right ends. Thus, the oil in the cooling flow channel 11 in the rotor shaft 1 can disperse and flow to the bearing 3, the end ring 42 and the stator coil 5, so as to realize effective cooling of the ends of the bearing 3, the end ring 42 and the stator coil 5.

[0041] Of course, the oil outlets 12 can also be set to multiple groups, and the corresponding intermediate flow channels 41 can be set to multiple groups. The multiple groups of oil outlets 12 are distributed at intervals along the circumference of the rotor shaft 1, and the multiple intermediate flow channels 41 are distributed at intervals along the circumference of the rotor core 4. The specific circulation method is the same as the circulation method of the above two groups of oil outlets 12 and the intermediate flow channels 41, which can improve the circulation and cooling effect of the oil.

[0042] In some embodiments, the oil slinger ring 2 includes a first oil slinging channel 27 and a second oil slinging channel 26 spaced circumferentially, the axial oil outlet hole 24 is connected to the first oil slinging channel 27, the radial oil outlet hole 23 is arranged on the side wall of the first oil slinging channel 27, and the oblique oil outlet hole 25 is connected to the second oil slinging channel 26.

[0043] In practice, the oil at one oil outlet 12 of each group is suitable for flowing to one end of the first oil slinging channel 27 of one oil slinger 2, the axial oil outlet hole 24 of one oil slinger 2 is connected to the other end of the corresponding first oil slinging channel 27 and is open in the axial direction of the first oil slinging channel 27, and the radial oil outlet hole 23 is connected to the other end of the corresponding first oil slinging channel 27 and is open in the radial direction of the first oil slinging channel 27. The oil at one oil outlet 12 of each group is also suitable for flowing to one end of an intermediate flow channel 41, and is suitable for flowing from the other end of an intermediate flow channel 41 to one end of the second oil slinging channel 26 of another oil slinger 2, and the oblique oil outlet hole 25 of another oil slinger 2 is connected to the other end of the second oil slinging channel 26 of another oil slinger 2.

[0044] When the oil flows into one end of the first oil-swinging channel 27 from the oil outlet 12, it flows out from the axial oil outlet hole 24 at the other end of the first oil-swinging channel 27 and also flows out toward the radial oil outlet hole 23 of the first oil-swinging channel 27 at the same time. That is, the oil flowing out of the oil outlet 12 of the rotor shaft 1 is divided into two paths after entering the first oil-swinging channel 27, one path flows out through the axial oil outlet hole 24 and the other path flows out through the radial oil outlet hole 23, so as to cool the ends of the bearing 3 and the stator coil 5 at the same time, thereby improving the cooling efficiency; and the oil flowing out of an oil outlet 12 at one end is suitable for flowing to an intermediate flow channel 41 and flowing along the intermediate flow channel 41 to another second oil-swinging channel 26, and flows out from the second oil-swinging channel 26 along the oblique oil outlet hole 25 to cool the ends of the stator coil 5.

[0045] like Figure 5 As shown, the oil slinger 2 includes an oil slinger body and a connecting column extending axially along the oil slinger 2. The interior of the connecting column is a hollow structure to form a first oil slinging channel 27. The setting of the connecting column enhances the strength of the oil slinger 2, and the design of the connecting column makes it easier to set the radial oil outlet hole 23 on the side wall. The length of the connecting column extending axially along the oil slinger body is set to be longer than the axial length of the oil slinger body, so that the oil slinger 2 can be set smaller while the axial oil outlet hole 24 of the connecting column is closer to the bearing 3, and the radial oil outlet hole 23 is closer to the end of the stator coil 5. The oil slinger 2 is formed with a boss in the circumference, and the second oil slinging channel 26 is a channel obliquely penetrating the boss, and the oblique oil outlet hole 25 is aligned with the middle flow channel 41 of the rotor core 4 so as to communicate with the middle flow channel 41.

[0046] In addition, if Figure 4 As shown, when the stator coil 5 is sleeved on the outside of the rotor core 4, the end of the stator coil 5 is radially opposite to the radial oil outlet hole 23 of the first oil-swinging channel 27. Therefore, the radial oil outlet hole 23 is designed so that the oil flowing out of the radial oil outlet hole 23 can cool the end of the stator coil 5 better and more accurately.

[0047] In some embodiments, the oil slinger ring 2 is further provided with a radially arranged transition channel 13 , and the oil outlet 12 is connected to the first oil slinger channel 27 through the transition channel 13 .

[0048] In practice, the radially arranged transition channel 13 connects the oil outlet 12 on the rotor shaft 1 with the first oil slinging channel 27 extending axially along the oil slinging ring 2, thereby connecting the oil outlet 12 with the axial oil outlet hole 24 and the radial oil outlet hole 23 of the first oil slinging channel 27, and the transition channel 13 facilitates the drainage of the oil.

[0049] Specifically, refer to Figure 6As shown, the transition channel 13 can be constructed as a groove extending radially along the oil slinger 2. When the oil slinger 2 is connected to the rotor shaft 1, the oil outlet 12 of the rotor shaft 1 is aligned with the groove extending radially along the oil slinger 2, so that the oil can be better drained into the groove, and the oil is drained into the first oil slinging channel 27 through the groove. Of course, the transition channel 13 can also be set inside the oil slinger 2 along the radial direction of the oil slinger 2, as long as the transition channel 13 is aligned with the oil outlet 12. The embodiment of the utility model sets the transition channel 13 as a groove extending radially along the oil slinger 2, which can facilitate the setting and processing of the transition channel 13, and when installing the oil slinger 2, it is easier to observe whether the transition channel 13 is aligned with the oil outlet 12, thereby improving the installation efficiency.

[0050] In some embodiments, the oil slinger 2 is partially located on the inner circumferential wall of the rotor core 4 and partially extends outside the rotor core 4, the first oil slinger channel 27 extends axially to the outside of the rotor core 4, and the radial oil outlet hole 23 is located outside the rotor core 4 in the first oil slinger channel 27, and the second oil slinger channel 26 of the oil slinger 2 is located on the inner periphery of the rotor core 4.

[0051] In practice, part of the oil slinger 2 is located on the inner circumferential wall of the rotor core 4 and part of it extends outside the rotor core 4, which reduces the axial distance of the oil slinger 2 and the rotor core 4 occupied by the rotor shaft 1, and the integration is better. But at the same time, if part of the oil slinger 2 extends outside the rotor core 4, then the first oil slinger channel 27 extends to the position outside the rotor core 4 and is provided with a radial oil outlet hole 23, which facilitates the oil to be discharged from the radial oil outlet hole 23 facing the end of the stator coil 5, and prevents the rotor core 4 from affecting the oil discharge of the radial oil outlet hole 23.

[0052] In addition, the first oil-slinging channel 27 extends axially out of the rotor core 4, so that the axial oil outlet hole 24 of the first oil-slinging channel 27 can be closer to the bearing 3, so as to facilitate the cooling of the bearing 3; similarly, the second oil-slinging channel 26 of the oil-slinging ring 2 is located on the inner periphery of the rotor core 4, so that the oblique oil outlet hole 25 can be better oriented toward the inner wall of the end ring 42 of the rotor core 4, so that the oil can better cool the end ring 42.

[0053] In some embodiments, the oil outlet 12 and the intermediate flow channel 41 are both arranged in three groups, and each oil slinger 2 has three first oil slinger channels 27 and second oil slinger channels 26, wherein the first oil slinger channel 27 of one oil slinger 2 and the second oil slinger channel 26 of another oil slinger 2 are axially opposite.

[0054] In practice, three oil outlet holes are respectively provided at both ends of the rotor shaft 1, wherein the first oil-slinging channel 27 of the oil-slinging ring 2 at one end and the second oil-slinging channel 26 of the oil-slinging ring 2 at the other end are axially opposite, the first oil-slinging channel 27 at one end corresponds to the oil outlet 12 at the end, and the second oil-slinging channel 26 at the one end corresponds to an intermediate flow channel 41 of the rotor core 4, that is, there are six intermediate flow channels 41 in total, and the three oil outlets 12 at each end can be distributed at intervals around the circumference of the rotor shaft 1, so the three oil outlets 12 at each end can be aligned with the three first oil-slinging channels 27 at the corresponding end, and the oil flowing out of the three oil outlets 12 can flow to the three first oil-slinging channels 27 at the corresponding end respectively, and each first oil-slinging channel 27 is provided with an axial oil outlet hole 24 and a radial oil outlet hole 23, that is, the oil flowing out of the three axial oil outlet holes 24 of the three first oil-slinging channels 27 can be directed to different circumferential positions of the bearing 3 to increase the cooling position of the bearing 3 along the circumferential direction and improve the cooling effect of the bearing 3.

[0055] Similarly, the three radial oil outlet holes 23 of the three first oil-slinging passages 27 can cool the ends of the stator coil 5 and different circumferential positions of the stator coil 5, increase the cooling positions of the ends of the stator coil 5, and improve the cooling effect of the ends of the stator coil 5. The three oblique oil outlet holes 25 of the three second oil-slinging passages 26 can cool different circumferential positions of the end ring 42, increase the cooling positions of the end ring 42, and improve the cooling effect of the end ring 42.

[0056] Of course, the oil outlets 12 and the intermediate flow channels 41 can also be set to more than three groups, and the number of the first oil-slinging channels 27 of the oil-slinging ring 2 on each side corresponds to the number of the oil outlets 12 at each end. Similarly, the number of the second oil-slinging channels 26 of the oil-slinging ring 2 on each side corresponds to the number of the intermediate flow channels 41, thereby further increasing the circumferential cooling positions of the bearing 3, the stator coil 5 and the end ring 42, respectively, and improving the cooling effect on the bearing 3, the stator coil 5 and the end ring 42.

[0057] In the embodiment of the utility model, the oil outlet 12 and the intermediate flow channel 41 are preferably arranged in three groups, so as to achieve effective cooling of the bearing 3, the stator coil 5 and the end ring 42 respectively, while reducing the complexity of the oil circuit.

[0058] In some embodiments, the three first oil slinging channels 27 of each oil slinger ring 2 are equidistantly spaced along the circumference of the oil slinger ring 2, the three second oil slinging channels 26 of each oil slinger ring 2 are equidistantly spaced along the circumference of the oil slinger ring 2, and the three first oil slinging channels 27 and the three second oil slinging channels 26 of each oil slinger ring 2 are staggered one by one.

[0059] In practice, that is, after the three first oil-slinging channels 27 of each oil-slinging ring 2 are distributed at intervals, the angle between any two first oil-slinging channels 27 is 120 degrees; similarly, after the three second oil-slinging channels 26 of each oil-slinging ring 2 are distributed at intervals, the angle between any two second oil-slinging channels 26 is 120 degrees; the three axial oil outlet holes 24 of the three first oil-slinging channels 27 of each oil-slinging ring 2 can be uniformly cooled in the circumferential direction of the bearing 3, and the three radial oil outlet holes 23 of the three first oil-slinging channels 27 of each oil-slinging ring 2 can be uniformly cooled in the circumferential direction of the stator coil 5.

[0060] In addition, the three first oil-slinging channels 27 and the three second oil-slinging channels 26 are staggered one by one, so that the oil-slinging rings 2 at both ends can form six intermediate flow channels 41. After the oil flows out from the oil outlet 12 at the right end of the rotor shaft 1, the oil along three of the intermediate flow channels 41 flows to the three oblique oil outlet holes 25 at the left end to cool the end ring 42 at the left end. After the oil flows out from the oil outlet 12 at the left end of the rotor shaft 1, the oil along three of the intermediate flow channels 41 flows to the three oblique oil outlet holes 25 at the right end to cool the end ring 42 at the right end. The six intermediate flow channels 41 are equally spaced, thereby achieving uniform cooling of the inner circumference of the end ring 42.

[0061] In some embodiments, the motor assembly 100 also includes a motor housing 6, and a first opening 62 is provided on the lower side of the motor housing 6. The first opening 62 is connected to the axial oil outlet hole 24, the radial oil outlet hole 23 and the oblique oil outlet hole 25, and the first opening 62 discharges the oil.

[0062] Among them, the motor housing 6 is arranged around the rotor assembly 101 and the stator assembly 102, and the motor housing 6 can be integrated with the reducer housing. A cavity is formed between the motor housing 6, the stator assembly 102 and the rotor assembly 101. For example, the oil after lubricating and cooling the bearing 3, the oil after cooling the stator coil 5, and the oil at the end of the stator coil 5 all fall into the bottom of the motor housing 6 due to gravity, or are thrown to the bottom of the motor housing 6 during operation, and the oil is discharged through the first opening 62 at the bottom, so that the cooled oil is discharged in time to take away the heat of the structure that needs to be cooled, so that the cooling oil continues to be injected into the reducer input shaft 7, and the reducer input shaft 7 is connected to the rotor shaft 1, so that the cooling oil injected into the reducer input shaft 7 enters the cooling channel 11 of the rotor shaft 1; in actual design, the oil flowing out along the first opening 62 can be cooled and continue to enter the reducer input shaft 7, so as to continue to enter the cooling channel 11 of the rotor shaft 1 through the reducer input shaft 7, so as to realize the recycling of the oil.

[0063] In some embodiments, the motor housing 6 also includes a housing oil channel 61, which is disposed at the bottom of the motor housing 6. The housing oil channel 61 is provided with a second opening 63. The housing oil channel 61 collects oil from the stator assembly 102 and the rotor assembly 101, and discharges the oil through the second opening 63.

[0064] Among them, a housing oil channel 61 is set in the motor housing 6. When it is inconvenient for the oil to flow out from the first opening 62, the oil can flow into the housing oil channel 61 to continue to discharge the oil through the second opening 63 of the housing oil channel 61. That is, through the first opening 62, the second opening 63 and the housing oil channel 61, the cooling oil in the rotor assembly 101 and the stator assembly 102 can be effectively collected and discharged to take away the heat of the corresponding structures.

[0065] It should also be noted that the utility model adopts high-efficiency production solutions such as high-pressure casting, and the symmetrical structural characteristics of the two oil slingers 2 make them suitable for both ends of the rotor shaft 1, reducing the types of parts. The motor shown in the utility model is hybrid cooling, the armature itself has shell water cooling, and the oil slinger 2 arranged on the rotor shaft 1 can further enhance the cooling of the armature, and can also achieve efficient distribution of flow by adjusting the diameter and direction of the oil outlet 12, the axial oil outlet hole 24, the radial oil outlet hole 23 and the oblique oil outlet hole 25.

[0066] The utility model embodiment discloses a vehicle, including the above-mentioned motor assembly 100, wherein oil enters from the cooling channel 11 of the rotor shaft 1, and finally communicates with the intermediate channel 41 of the oil slinger 2 and the rotor core 4 through the oil outlet 12, and the cooling and lubrication of the bearing 3 are achieved through the axial oil outlet hole 24 of the oil slinger 2, and the end of the stator coil 5 is cooled through the radial oil outlet hole 23 of the oil slinger 2, and the end of the rotor core 4 is cooled through the oblique oil outlet hole 25 of the oil slinger 2. The overall structure is simple, and no complicated oil pipe design is required, and no additional space is required. Different positions of the vehicle's motor are effectively cooled, thereby improving the service life of the vehicle's motor.

[0067] 1. In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0068] 2. In the description of the present utility model, "first feature" and "second feature" may include one or more of these features.

[0069] 3. In the description of this utility model, "plurality" means two or more.

[0070] 4. In the description of the present invention, a first feature “above” or “below” a second feature may include that the first and second features are directly in contact, or may include that the first and second features are not in direct contact but are in contact via another feature between them.

[0071] 5. In the description of the present utility model, the first feature “above”, “above” and “on” the second feature includes the first feature being directly above and diagonally above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0072] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0073] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A motor assembly, characterized in that: include: A stator assembly and a rotor assembly, wherein the stator assembly is sleeved outside the rotor assembly, and the rotor assembly comprises a rotor shaft, a rotor core and two oil slingers, wherein the rotor core and the oil slingers are sleeved outside the rotor shaft, and the two oil slingers are respectively located at the ends of the rotor core; The rotor shaft is provided with a cooling channel and an oil outlet connected to the cooling channel, the rotor core is provided with an intermediate channel, one of the two oil slingers is provided with an axial oil outlet hole and a radial oil outlet hole, and the other oil slinger is provided with an oblique oil outlet hole, and the oil at the oil outlet is suitable for flowing to the axial oil outlet hole and the radial oil outlet hole of the one oil slinger and flowing to the oblique oil outlet hole of the other oil slinger through the intermediate channel.

2. The motor assembly according to claim 1, characterized in that: The two oil slingers are respectively a first oil slinger and a second oil slinger, and the first oil slinger and the second oil slinger are both provided with the axial oil outlet hole, the radial oil outlet hole, and the oblique oil outlet hole; There are at least one group of oil outlets and two in each group, and there are at least one group of intermediate flow channels and two in each group. The oil at one oil outlet in each group is suitable for flowing to the axial oil outlet hole and radial oil outlet hole of the first oil slinger ring and flowing to the oblique oil outlet hole of the second oil slinger ring through one intermediate flow channel in each group. The oil at another oil outlet in each group is suitable for flowing to the axial oil outlet hole and radial oil outlet hole of the second oil slinger ring and flowing to the oblique oil outlet hole of the first oil slinger ring through another intermediate flow channel in each group.

3. The motor assembly according to claim 2, characterized in that: The oil slinger ring comprises a first oil slinging channel and a second oil slinging channel spaced circumferentially, the axial oil outlet hole is communicated with the first oil slinging channel, the radial oil outlet hole is arranged on the side wall of the first oil slinging channel, and the oblique oil outlet hole is communicated with the second oil slinging channel.

4. The motor assembly according to claim 3, characterized in that: The oil slinger ring is also provided with a radially arranged transition channel, and the oil outlet is connected to the first oil slinger channel through the transition channel.

5. The motor assembly according to claim 4, characterized in that: The oil slinger ring is partially located on the inner circumferential wall of the rotor core and partially extends outside the rotor core, the first oil slinger channel extends axially along the oil slinger ring to outside the rotor core, and the radial oil outlet hole is located at a position where the first oil slinger channel is located outside the rotor core, and the second oil slinger channel of the oil slinger ring is located on the inner periphery of the rotor core.

6. The motor assembly according to claim 3, characterized in that: The oil outlet and the intermediate flow channel are both arranged in three groups, and each of the oil slinger rings has three first oil slinger channels and three second oil slinger channels, wherein the first oil slinger channel of one oil slinger ring and the second oil slinger channel of another oil slinger ring are axially opposite to each other.

7. The motor assembly according to claim 6, characterized in that: The three first oil-slinging channels of each oil-slinging ring are distributed at equal intervals along the circumference of the oil-slinging ring, and the three second oil-slinging channels of each oil-slinging ring are distributed at equal intervals along the circumference of the oil-slinging ring, and the three first oil-slinging channels and the three second oil-slinging channels of each oil-slinging ring are distributed alternately one by one.

8. The motor assembly according to claim 1, characterized in that: It also includes a motor housing, a lower side of which is provided with a first opening, the first opening is connected with the axial oil outlet hole, the radial oil outlet hole and the oblique oil outlet hole, and the first opening discharges the oil.

9. The motor assembly according to claim 8, characterized in that: The motor housing further includes a housing oil passage, which is disposed at the bottom of the motor housing and has a second opening. The housing oil passage collects oil from the stator assembly and the rotor assembly and discharges the oil through the second opening.

10. A vehicle, characterized in that: A motor assembly comprising any one of claims 1 to 9.

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