Sealing assembly, motor stator, motor, power assembly and vehicle

Abstract

A sealing assembly, a motor stator, a motor, a power assembly and a vehicle, the sealing assembly comprises an oil collecting member, a wire sleeve and a sealing cover, the oil collecting member comprises a first through hole, an inner side wall and an outer side wall, the inner side wall and the outer side wall are oppositely arranged, and an accommodating cavity for accommodating a winding is enclosed by the inner side wall; the wire sleeve is filled in the first through hole and is used for preventing the cooling medium in the accommodating cavity from flowing out through the first through hole; a wire passing hole is formed in the wire sleeve; the sealing cover covers a port, far away from one side of the accommodating cavity, of the first through hole so as to limit the wire sleeve in the first through hole, a second through hole is formed in the sealing cover, and the wire passing hole is communicated with the accommodating cavity and the second through hole so that an outgoing wire on the winding can penetrate out of the accommodating cavity through the wire passing hole and the second through hole. According to the invention, the sealing cover covers the port at one side of the first through hole, so that the wire sleeve is fixed in the first through hole, the installation stability of the wire sleeve is improved, the wire sleeve is prevented from being separated from the first through hole, the sealing effect on the outgoing line is improved, and the leakage of a cooling medium in the oil collection part is prevented.

Description

Technical Field

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

[0002] With the rapid development of new energy vehicle technology, the performance requirements for motors are getting higher and higher. The motor consists of 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 core of the existing motor is generally made of silicon steel punchings with a high silicon content, which are stacked in groups. Losses will occur 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.

[0003] In the prior art, the stator core and stator winding are cooled by spraying cooling medium or immersing cooling medium. The lead wires of the stator windings need to pass through the cooling medium to connect with the external circuit. The sealing effect of the lead wires is poor, which can easily lead to leakage of the cooling medium. Utility Model Content

[0004] The purpose of the present application is to provide a sealing assembly, a motor stator, a motor, a power assembly and a vehicle to solve the problem of poor sealing effect on the lead wires of the windings and easy leakage of the cooling medium.

[0005] To achieve the purpose of this application, this application provides the following technical solutions:

[0006] In a first aspect, the present application provides a sealing assembly, comprising:

[0007] The oil collecting member comprises a first through hole and an inner side wall and an outer side wall which are arranged opposite to each other, wherein the first through hole penetrates the inner side wall and the outer side wall, and the inner side wall forms a receiving cavity for receiving the winding;

[0008] A wire sleeve, filled in the first through hole and used to prevent the cooling medium in the accommodating cavity from flowing out through the first through hole, and the wire sleeve is provided with a wire hole;

[0009] A sealing cover is provided on a port of the first through hole away from the accommodating cavity to limit the wire sleeve in the first through hole. A second through hole is provided on the sealing cover. The wire passing hole connects the accommodating cavity and the second through hole to allow the lead wire on the winding to pass through the accommodating cavity through the wire passing hole and the second through hole.

[0010] In combination with the first aspect, in a possible implementation, the wire sleeve includes a wire sleeve body and a first protrusion, the wire through hole penetrates the wire sleeve body along the axial direction of the wire sleeve body, the wire sleeve body is inserted into the first through hole, and the first protrusion is convexly provided on the radial outer peripheral wall of the wire sleeve body;

[0011] The first protrusion is clamped between the outer side wall of the oil collecting member and the sealing cover.

[0012] In combination with the first aspect, in a possible implementation manner, the first protrusion is disposed around the wire sleeve body.

[0013] In combination with the first aspect, in a possible implementation, a second protrusion radially inward is provided on the hole wall of the second through hole, and the first protrusion is clamped between the outer side wall of the oil collecting member and the second protrusion.

[0014] In combination with the first aspect, in a possible implementation manner, the second protrusion is arranged in a ring shape.

[0015] In combination with the first aspect, in a possible implementation, a third protrusion is provided radially inwardly on the hole wall of the first through hole, the wire hole passes through the wire sleeve along the axial direction of the wire sleeve, and a first end of the wire sleeve along the axial direction abuts against the third protrusion;

[0016] A second protrusion pointing radially inward is provided on the hole wall of the second through hole, and a second end of the wire sleeve along the axial direction abuts against the second protrusion.

[0017] In combination with the first aspect, in a possible implementation, the outer wall includes a first area and a second area, the first through hole is arranged on the first area, the second area is located at the outer edge of the first area, and the first area protrudes out of the second area toward the side away from the inner wall, an installation surface is formed between the first area and the second area, and the sealing cover is connected to the installation surface.

[0018] In combination with the first aspect, in a possible implementation manner, a first thread is provided on the mounting surface, a second thread is provided on a hole wall of the second through hole, and the first thread is connected to the second thread.

[0019] In combination with the first aspect, in a possible implementation manner, the wire sleeve is interference fit with the first through hole.

[0020] In a second aspect, the present application further provides a motor stator, comprising the sealing assembly as described in the first aspect.

[0021] In combination with the second aspect, in a possible implementation, the motor stator also includes a stator core and a winding, the winding is wound on the stator core, the oil collecting member is arranged on one side of the axial direction of the stator core, and the lead wire of the winding is passed through the wire hole.

[0022] In combination with the second aspect, in a possible implementation manner, the lead wire of the winding is interference fit with the wire passing hole.

[0023] In a third aspect, the present application further provides a motor, comprising the motor stator as described in the second aspect.

[0024] In a fourth aspect, the present application also provides a powertrain, comprising the motor as described in the third aspect.

[0025] In a fifth aspect, the present application also provides a vehicle, comprising the motor as described in the third aspect or the powertrain as described in the fourth aspect.

[0026] The sealing assembly provided by the present application improves the sealing performance by filling a wire sleeve in the first through hole on the oil collecting piece, wherein the wire sleeve is used to prevent the cooling medium in the accommodating cavity from flowing out through the first through hole; the wire hole on the wire sleeve is used for the lead wire of the winding to pass through, and a sealing cover is provided on the port of the first through hole away from the accommodating cavity, thereby limiting the wire sleeve in the first through hole, improving the stability of the wire sleeve installation, and preventing the wire sleeve from escaping from the first through hole, thereby improving the sealing effect on the lead wire and preventing the cooling medium in the oil collecting piece from leaking; at the same time, a second through hole connected to the wire hole is provided on the sealing cover, so that the lead wire of the winding can pass through the wire hole and the second through hole in turn to be connected to the external circuit, thereby realizing power supply of the winding. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] 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.

[0028] Figure 1 This is a schematic structural diagram of a sealing assembly and lead wires according to an embodiment of the present application;

[0029] Figure 2 This is a schematic structural diagram of an oil collecting member according to an embodiment of the present application;

[0030] Figure 3 This is a schematic structural diagram of a sealing cover according to an embodiment of the present application;

[0031] Figure 4A schematic structural diagram of a sealing cover according to an embodiment of the present application from another perspective;

[0032] Figure 5 This is a schematic structural diagram of a wire sleeve according to an embodiment of the present application;

[0033] Figure 6 This is a schematic structural diagram of an oil collecting member according to another embodiment of the present application;

[0034] Figure 7 This is a schematic structural diagram of a wire sleeve according to another embodiment of the present application.

[0035] Description of reference numerals:

[0036] 100, oil collecting part; 110, first through hole; 111, third protrusion; 120, inner wall; 130, outer wall; 131, first area; 132, second area; 140, mounting surface; 141, first thread; 200, wire sleeve; 210, wire hole; 220, wire sleeve body; 230, first protrusion; 300, sealing cover; 310, second through hole; 311, second protrusion; 312, second thread; 400, lead wire. DETAILED DESCRIPTION

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] The present application provides a vehicle, the vehicle includes a powertrain and a frame, the powertrain is connected to the frame. The powertrain provides power to the vehicle to drive the vehicle. The vehicle includes a fuel vehicle, a pure electric vehicle and a hybrid vehicle.

[0042] In pure electric vehicles and hybrid electric vehicles, the motor is the main power source of the vehicle, and the performance of the motor is an important factor affecting the power of the vehicle. Amorphous materials such as iron, silicon, and boron have the advantage of low iron loss and are used in motors, but due to the poor thermal conductivity and low thermal expansion coefficient of amorphous materials themselves, there are many problems. During the operation of the motor, the motor stator itself generates a lot of Joule heat, which causes the motor performance to deteriorate.

[0043] The present application provides a motor, which includes a housing, a motor stator and a motor rotor. The motor stator is contained in the housing, and the motor rotor is disposed in the motor stator. The main function of the motor stator is to generate a rotating magnetic field, and the main function of the motor rotor is to be cut by magnetic lines of force in the rotating magnetic field and then output current converted into mechanical energy. The motor stator includes a stator core and a winding. The stator core is made of silicon steel punchings with a high silicon content, which are stacked in groups. The winding includes a multi-turn coil, which is wound on the stator core according to a specific rule to form a desired magnetic field distribution. At the same time, the winding also includes lead wires, which are connected to the coils. These lead wires are used to connect the windings to an external power supply or a control system to ensure that the current can flow smoothly into the windings, thereby driving the operation of the motor. Losses will be generated during the operation of the motor, and these losses will serve as a heat source to heat the motor components, causing the motor temperature to rise.

[0044] In the prior art, the stator core and windings are cooled by spraying cooling medium or immersing cooling medium. The lead wires of the windings need to pass through the cooling medium to connect with the external circuit. The sealing effect of the lead wires is poor, which can easily lead to leakage of the cooling medium.

[0045] See also Figure 1 , Figure 2 and Figure 3 , Figure 1 This is a schematic diagram of the structure of a sealing assembly and lead wires according to an embodiment of the present application. Figure 2 This is a schematic structural diagram of an oil collecting member according to an embodiment of the present application. Figure 3 It is a schematic structural diagram of a sealing cover according to an embodiment of the present application.

[0046] The present application provides a sealing assembly, including an oil collecting member 100, a wire sleeve 200 and a sealing cover 300. The oil collecting member 100 can be connected to the casing, and there is a gap between the oil collecting member 100 and one side of the axial direction of the stator core; or the oil collecting member 100 is arranged inside the casing, and the oil collecting member 100 is directly connected to one side of the axial direction of the stator core. The oil collecting member 100 includes a first through hole 110 and an inner side wall 120 and an outer side wall 130 arranged oppositely. The first through hole 110 passes through the inner side wall 120 and the outer side wall 130. The inner side wall 120 is arranged on the side of the oil collecting member 100 close to the stator core. The inner side wall 120 encloses a receiving cavity for accommodating the winding, and the receiving cavity contains a cooling medium to cool the winding.

[0047] The first through hole 110 on the oil collecting member 100 is connected to the accommodating chamber, and the wire sleeve 200 is filled in the first through hole 110. The wire sleeve 200 is used to prevent the cooling medium in the accommodating chamber from flowing out through the first through hole 110. The sealing cover 300 is connected to the wire sleeve 200. The sealing cover 300 is arranged on the port of the first through hole 110 away from the accommodating chamber to limit the wire sleeve 200 in the first through hole 110, improve the stability of the installation of the wire sleeve 200, and prevent the wire sleeve 200 from escaping from the first through hole 110, thereby improving the sealing effect of the lead wire 400 and preventing the cooling medium in the oil collecting member 100 from leaking. A wire through hole 210 is provided on the wire sleeve 200, and a second through hole 310 is provided on the sealing cover 300. The wire through hole 210 is connected to the accommodating chamber and the second through hole 310, so that the lead wire 400 on the winding can pass through the accommodating chamber through the wire through hole 210 and the second through hole 310 to connect with the external circuit, so as to realize the power supply of the winding.

[0048] The lead wire 400 includes a first section and a second section connected to each other, the first section of the lead wire 400 extends along the axial direction of the stator core, the second section of the lead wire 400 extends along the radial direction of the stator core, and the second section of the lead wire 400 is located outside the accommodating cavity surrounded by the oil collector 100 and the stator core. The first section of the lead wire 400 passes through the first through hole 110, the wire hole 210 and the second through hole 310 to connect with the second section to achieve connectivity of the winding circuit.

[0049] See also Figure 2 , Figure 3 , Figure 4 and Figure 5 , Figure 2 This is a schematic structural diagram of an oil collecting member according to an embodiment of the present application. Figure 3 This is a schematic structural diagram of a sealing cover according to an embodiment of the present application. Figure 4 This is a structural schematic diagram of a sealing cover from another perspective of an embodiment of the present application. Figure 5 This is a schematic structural diagram of a wire sleeve according to an embodiment of the present application.

[0050] In the sealing assembly provided in the present application, the cross-section of the wire sleeve 200 may be circular, square, etc. The embodiment of the present application is described by taking the cross-section of the wire sleeve 200 as a circular example.

[0051] The wire sleeve 200 includes a wire sleeve body 220 and a first protrusion 230. The wire hole 210 penetrates the wire sleeve body 220 along the axial direction of the wire sleeve body 220. The wire sleeve body 220 is inserted into the first through hole 110. The first protrusion 230 is protruded on the radial outer peripheral wall of the wire sleeve body 220; the first protrusion 230 is clamped between the outer wall 130 of the oil collecting part 100 and the sealing cover 300. Specifically, the axis of the first through hole 110 is coaxial with the axis of the wire sleeve 200, the first protrusion 230 abuts against the outer wall 130 along one side of the axial direction of the wire sleeve body 220, and the first protrusion 230 abuts against the sealing cover 300 along the other side of the axial direction of the wire sleeve body 220, so as to limit the two sides of the first protrusion 230 on the axis of the first through hole 110, thereby preventing the wire sleeve 200 from escaping from the first through hole 110, thereby improving the sealing effect of the lead wire 400 and preventing the leakage of the cooling medium in the accommodating cavity.

[0052] Optionally, the first protrusion 230 is disposed around the wire sleeve body 220 , that is, the first protrusion 230 is disposed in a ring shape, so as to further improve the installation stability of the wire sleeve 200 and prevent the wire sleeve 200 from escaping from the first through hole 110 .

[0053] In the sealing cover 300 provided in the present application, a second protrusion 311 radially inward is provided on the hole wall of the second through hole 310, and the first protrusion 230 is clamped between the outer wall 130 of the oil collecting member 100 and the second protrusion 311. Specifically, the second protrusion 311 is arranged in an annular shape to improve the limiting effect on the first protrusion 230; the inner diameter of the second protrusion 311 is smaller than the inner diameter of the first through hole 110, the sealing cover 300 is connected to the oil collecting member 100, and the sealing cover 300 is located outside the accommodating cavity so that the second protrusion 311 covers the port of the first through hole 110 away from the accommodating cavity. And the inner diameter of the second protrusion 311 is smaller than the inner diameter of the first protrusion 230, so that the second protrusion 311 abuts against the first protrusion 230 to axially block the wire sleeve 200, thereby inhibiting the wire sleeve 200 from coming out of the first through hole 110.

[0054] In one embodiment, the inner wall 120 and the outer wall 130 are arranged opposite to each other in the axial direction of the stator core, that is, the first through hole 110 extends in the axial direction of the stator core, and the wire sleeve 200 is arranged in the first through hole 110 and moves in the axial direction of the stator core. The sealing cover 300 is connected to the oil collecting member 100, so that the sealing cover 300 is covered on one side port of the first through hole 110 in the axial direction of the stator core, thereby limiting the axial movement of the wire sleeve 200 and preventing the wire sleeve 200 from coming out of the first through hole 110.

[0055] In the sealing assembly provided in the present application, a plurality of wire sleeves 200 may be provided, and a plurality of sealing covers 300 may be provided, and the number of wire sleeves 200 is consistent with the number of sealing covers 300. A plurality of first through holes 110 are provided on the oil collecting member 100, and the number of the first through holes 110 is consistent with the number of wire sleeves 200, so that the plurality of wire sleeves 200 are respectively restricted to be installed in the plurality of first through holes 110.

[0056] For a three-phase motor, the winding includes three lead wires 400, through which the winding is powered, thereby generating a rotating magnetic field to drive the motor to rotate. In addition, in a three-phase motor, a thermocouple can be used to monitor the temperature of the motor to ensure that the motor is within the normal operating range. By installing a thermocouple on the motor and connecting the winding and the temperature control system through a thermocouple wire, the temperature of the motor can be monitored in real time, and the motor load can be reduced or shut down for protection. The thermocouple wire is also sealed and fixed by a wire sleeve 200 and a sealing cover 300, that is, the sealing assembly provided in the present application can achieve sealing in a variety of lead conditions and suppress leakage of the cooling medium.

[0057] The material of the wire sleeve 200 can be elastic materials such as rubber, silicone or plastic. Specifically, it can be silicone rubber (SIL), fluororubber (FKM), PVC (polyvinyl chloride) and PE (polyethylene). The wire sleeve 200 is interference-fitted with the first through hole 110 to achieve a seal between the wire sleeve 200 and the first through hole 110, so as to prevent the cooling medium in the accommodating cavity from flowing out through the first through hole 110. And the wire hole 210 on the wire sleeve 200 is interference-fitted with the lead wire 400 of the winding to achieve a seal between the wire sleeve 200 and the lead wire 400 of the winding, thereby improving the overall sealing effect of the sealing component and inhibiting the leakage of the cooling medium. Among them, the shape of the wire hole 210 is similar to the shape of the lead wire 400, and the shape of the wire hole 210 can be circular, rectangular or trapezoidal, etc., and there is no specific limitation.

[0058] See also Figure 2 , Figure 3 and Figure 5 , Figure 2 This is a schematic structural diagram of an oil collecting member according to an embodiment of the present application. Figure 3 This is a schematic structural diagram of a sealing cover according to an embodiment of the present application. Figure 5This is a schematic diagram of the structure of a wire sleeve of an embodiment of the present application. In one embodiment, the outer wall 130 includes a first area 131 and a second area 132, the first through hole 110 is provided on the first area 131, the first through hole 110 passes through the first area 131 and the inner wall 120, the second area 132 is located at the outer edge of the first area 131, and the first area 131 protrudes from the second area 132 to the side away from the inner wall 120, and a mounting surface 140 is formed between the first area 131 and the second area 132, and the sealing cover 300 is connected to the mounting surface 140. That is, the first area 131, the mounting surface 140, and the second area 132 are connected to form a step for the sealing cover 300 to be installed; the first protrusion 230 is clamped between the first area 131 and the second protrusion 311 to achieve the fixation of the wire sleeve 200.

[0059] In the sealing assembly provided in the present application, a first thread 141 is provided on the mounting surface 140, a second thread 312 is provided on the hole wall of the second through hole 310, and the first thread 141 is connected with the second thread 312, so that the sealing cover 300 is sleeved on the mounting surface 140 to achieve the fixing of the sealing cover 300. That is, the sealing cover 300 and the oil collecting member 100 in the embodiment of the present application are fixed by threaded connection, which is not limited in other embodiments.

[0060] When the wire sleeve 200 is installed, the wire sleeve 200 is inserted into the first through hole 110 of the oil collecting member 100, so that the first protrusion 230 abuts against the first area 131, and then the sealing cover 300 is tightened and fixed on the oil collecting member 100, so as to achieve the fixation of the wire sleeve 200. The elastic wire sleeve 200 can increase the friction between the sealing cover 300 and the oil collecting member 100 during the fastening process, thereby improving the fastening force of the sealing cover 300 and preventing the sealing cover 300 from falling off. At the same time, during the fastening process of the sealing cover 300, the sealing cover 300 can squeeze the first protrusion 230 of the wire sleeve 200 to further improve the sealing between the wire sleeve 200 and the oil collecting member 100.

[0061] See also Figure 3 , Figure 6 and Figure 7 , Figure 3 This is a schematic structural diagram of a sealing cover according to an embodiment of the present application. Figure 6 This is a schematic structural diagram of an oil collecting member according to another embodiment of the present application. Figure 7This is a schematic diagram of the structure of a wire sleeve of another embodiment of the present application. A third protrusion 111 is provided on the hole wall of the first through hole 110, and the wire hole 210 passes through the wire sleeve 200 along the axial direction of the wire sleeve 200. The first end of the wire sleeve 200 along the axial direction abuts against the third protrusion 111; a second protrusion 311 is provided on the hole wall of the second through hole 310, and the second end of the wire sleeve 200 along the axial direction abuts against the second protrusion 311, that is, the wire sleeve 200 is clamped as a whole between the second protrusion 311 and the third protrusion 111. Specifically, the third protrusion 111 can support the wire sleeve 200. When the wire sleeve 200 is installed in the first through hole 110, the first end of the wire sleeve 200 abuts against the third protrusion 111, and the second end of the wire sleeve 200 abuts against the second protrusion 311 of the sealing cover 300, so as to fix the wire sleeve 200. The inner wall shape of the third protrusion 111 may be similar to the shape of the wire hole 210 to improve the uniformity of supporting the wire sleeve 200 .

[0062] It should be noted that, when the third protrusion 111 is provided on the hole wall of the first through hole 110, the first protrusion 230 can be omitted from the wire sleeve 200. In this case, the wire sleeve 200 is substantially cylindrical, and the wire sleeve 200 can also be fixed in the first through hole 110. Alternatively, when the third protrusion 111 is provided on the hole wall of the first through hole 110, the first protrusion 230 is provided on the outer wall of the wire sleeve 200, which can further improve the firmness of the installation of the wire sleeve 200 and prevent the wire sleeve 200 from coming out of the first through hole 110.

[0063] During the operation of the motor, the motor vibrates, and the wire sleeve 200 is fixed to the oil collecting member 100 through the sealing cover 300, thereby preventing the wire sleeve 200 from escaping from the first through hole 110, improving the overall sealing performance of the sealing assembly, and preventing leakage of the cooling medium.

[0064] 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.

[0065] 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 sealing assembly, characterized in that: include: The oil collecting member comprises a first through hole and an inner side wall and an outer side wall which are arranged opposite to each other, wherein the first through hole penetrates the inner side wall and the outer side wall, and the inner side wall forms a receiving cavity for receiving the winding; A wire sleeve, filled in the first through hole and used to prevent the cooling medium in the accommodating cavity from flowing out through the first through hole, and the wire sleeve is provided with a wire hole; A sealing cover is provided on a port of the first through hole away from the accommodating cavity to limit the wire sleeve in the first through hole. A second through hole is provided on the sealing cover. The wire passing hole connects the accommodating cavity and the second through hole to allow the lead wire on the winding to pass through the accommodating cavity through the wire passing hole and the second through hole.

2. The sealing assembly according to claim 1, characterized in that: The wire sleeve comprises a wire sleeve body and a first protrusion, the wire hole penetrates the wire sleeve body along the axial direction of the wire sleeve body, the wire sleeve body is inserted into the first through hole, and the first protrusion is convexly arranged on the radial outer peripheral wall of the wire sleeve body; The first protrusion is clamped between the outer side wall of the oil collecting member and the sealing cover.

3. The sealing assembly according to claim 2, characterized in that: The first protrusion is arranged around the wire sleeve body.

4. The sealing assembly according to claim 2, characterized in that: A second protrusion pointing radially inward is provided on the hole wall of the second through hole, and the first protrusion is clamped between the outer side wall of the oil collecting member and the second protrusion.

5. The sealing assembly according to claim 4, characterized in that: The second protrusion is arranged in a ring shape.

6. The sealing assembly according to claim 1, characterized in that A third protrusion is provided on the hole wall of the first through hole, which is radially inwardly facing. The wire hole passes through the wire sleeve along the axial direction of the wire sleeve, and a first end of the wire sleeve along the axial direction abuts against the third protrusion. A second protrusion pointing radially inward is provided on the hole wall of the second through hole, and a second end of the wire sleeve along the axial direction abuts against the second protrusion.

7. The sealing assembly according to any one of claims 1 to 6, characterized in that: The outer side wall includes a first area and a second area, the first through hole is arranged on the first area, the second area is located at the outer edge of the first area, and the first area protrudes out of the second area toward the side away from the inner side wall, an installation surface is formed between the first area and the second area, and the sealing cover is connected to the installation surface.

8. The sealing assembly according to claim 7, characterized in that: The mounting surface is provided with a first thread, the hole wall of the second through hole is provided with a second thread, and the first thread is connected to the second thread.

9. The sealing assembly according to claim 1, characterized in that: The wire sleeve is interference fit with the first through hole.

10. A motor stator, characterized in that: Comprising a sealing assembly as described in any one of claims 1-9.

11. The motor stator according to claim 10, characterized in that: The motor stator further comprises a stator core and a winding, wherein the winding is wound on the stator core, the oil collecting member is arranged on one side of the axial direction of the stator core, and the lead wire of the winding is passed through the wire hole.

12. The motor stator according to claim 11, characterized in that: The lead wires of the winding are interference fit with the wire passing holes.

13. A motor, characterized in that: The invention comprises a motor stator as claimed in any one of claims 10 to 12.

14. A powertrain, characterized in that: Comprising the motor as claimed in claim 13.

15. A vehicle, characterized in that: Comprising the electric machine as claimed in claim 13 or the powertrain as claimed in claim 14.

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