Stator assembly, motor and vehicle

Abstract

The utility model discloses a stator assembly, a motor and a vehicle, the stator assembly comprises a stator iron core, the stator iron core is internally provided with a winding coil, and the winding coil is provided with an outgoing line; the oil collecting end cover is arranged at one end, in the axial direction, of the stator iron core in a covering mode and covers the winding coil in a sealing mode, and a leading-out hole is formed in the oil collecting end cover; the lead-out part is arranged at the lead-out hole and seals the lead-out hole, the lead-out wire penetrates through the lead-out part, and the lead-out wire is in sealed connection with the lead-out part. According to the stator assembly provided by the utility model, the relative postures between the leading-out piece and the leading-out hole are easy to fix through the arrangement of the leading-out piece, so that the gap distribution between the leading-out piece and the leading-out hole is relatively uniform, the sealing reliability between the leading-out piece and the leading-out hole can be improved, and the sealing reliability between the leading-out wire and the oil collecting end cover can be improved; therefore, the reliability of the motor in the working process is improved.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to a stator assembly, a motor, and a vehicle. Background Technology

[0002] In some motors, cooling oil is used to cool the stator assembly during operation. The winding coils in the stator assembly are connected to the electrical components on the motor through lead wires. In related technologies, the sealing reliability between the lead wires and the parts that protrude from the stator assembly is low, and oil may leak from between the lead wires and the stator assembly, affecting the reliability of the motor during operation. Utility Model Content

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention provides a stator assembly that can improve the reliability of the motor during operation.

[0004] This utility model also proposes a motor having the above-mentioned stator assembly.

[0005] This utility model also proposes a vehicle having the above-mentioned motor.

[0006] According to a first aspect of the present invention, a stator assembly includes: a stator core, wherein a winding coil is provided inside the stator core, the winding coil having a lead wire; an oil collecting end cap, the oil collecting end cap being disposed on one end of the stator core in the axial direction and sealing the winding coil, the oil collecting end cap having a lead hole formed thereon; and a lead wire, the lead wire being disposed at the lead hole and sealing the lead hole, the lead wire passing through the lead wire and the lead wire being sealed to the lead wire.

[0007] According to the stator assembly of the first aspect of this utility model, by setting the lead-out member, during the production process, on the one hand, the operating space is larger when the lead wire and the lead-out member are sealed and connected, making it easier to perform sealing operations on the lead wire and the lead-out member; on the other hand, the relative posture between the lead-out member and the lead-out hole is easier to fix, making the gap distribution between the lead-out member and the lead-out hole more uniform, which can improve the sealing reliability between the lead-out member and the lead-out hole. Thus, the sealing reliability between the lead wire and the oil collection end cover can be improved, thereby improving the reliability of the motor during operation.

[0008] According to some embodiments of this utility model, the lead-out member is an integrally formed part, and the lead-out wire is integrally formed and sealed to the lead-out member.

[0009] According to some embodiments of the present invention, the lead-out member is disposed in the lead-out hole, and the lead-out member is in sealing contact with the inner wall of the lead-out hole.

[0010] According to some embodiments of the present invention, one of the periphery of the lead-out member and the inner wall of the lead-out hole is provided with a mating protrusion, and the other is provided with a mating groove, wherein the mating protrusion is sealed and abuts against the mating groove.

[0011] According to some embodiments of the present invention, the mating protrusion is one or more, the mating groove is one or more, and the mating protrusion and the mating groove correspond to each other.

[0012] According to some embodiments of the present invention, the outlet hole is formed on the outer peripheral surface of the oil collecting end cap in the radial direction of the stator assembly.

[0013] According to some embodiments of the present invention, the lead-out hole penetrates the oil collecting end cap at one end of the stator assembly facing the stator core in the axial direction, and the lead-out member is sealed to the stator core.

[0014] According to some embodiments of the present invention, the stator assembly further includes: a sealing gasket, the sealing gasket covering the end of the stator core, the oil collecting end cap covering the sealing gasket, the outer radial end of the sealing gasket forming a clearance opening, the lead-out member passing through the clearance opening and sealingly connected to the stator core, and in the circumferential direction of the stator assembly, the lead-out member sealingly abutting against the sealing gasket.

[0015] According to some embodiments of the present invention, a first oil passage extending circumferentially along the stator assembly is formed between the lead-out member and the stator core, and a second oil passage extending circumferentially along the stator assembly is formed between the oil collecting end cap and the sealing gasket. The first oil passage and the second oil passage are connected, and both the first oil passage and the second oil passage are connected to the oil passage in the stator core.

[0016] According to some embodiments of the present invention, the lead-out member has a first oil passage communicating with the first oil passage at at least one end of the stator assembly, and the clearance opening has a second oil passage communicating with the second oil passage on at least one side inner wall of the stator assembly in the circumferential direction. The first oil passage and the second oil passage are opposite to and communicate with each other, so that the first oil passage and the second oil passage are connected.

[0017] According to some embodiments of the present invention, the lead-out member is recessed at one end toward the stator core toward the oil collecting end cap to form a first oil passage with one end open, and the stator core covers the opening of the first oil passage.

[0018] According to some embodiments of the present invention, the first oil passage extends through both ends of the lead-out member in the circumferential direction of the stator assembly, and the through-hole of the first oil passage is formed as the first oil inlet.

[0019] According to some embodiments of the present invention, a connecting groove is formed on the side surface of the sealing gasket facing the oil collecting end cap. The connecting groove is connected to the second oil passage, and one end of the connecting groove penetrates the inner wall of the relief opening. The through-hole of the connecting groove on the inner wall of the relief opening forms the second oil passage.

[0020] According to some embodiments of the present invention, the end of the oil collecting cap facing the sealing gasket is recessed away from the sealing gasket to form an open second oil passage, and the sealing gasket covers the opening of the second oil passage.

[0021] According to some embodiments of the present invention, the stator assembly is further provided with a sealing connection part, the sealing connection part is U-shaped and arranged around the lead-out hole, the two ends of the sealing connection part extend to the stator core respectively, and the sealing connection part is used for sealing connection with the periphery of the communication port of the electrical cavity.

[0022] According to some embodiments of the present invention, the sealing connection includes a sealing groove, which is a U-shaped groove. The sealing groove is arranged around the lead-out member, and both ends of the sealing groove extend to the stator core.

[0023] According to some embodiments of this utility model, the lead-out part is an injection molded part.

[0024] According to a second aspect of the present invention, a motor includes: a housing defining a motor cavity and an electrical cavity within the housing, the motor cavity and the electrical cavity being connected through a communication port; and a stator assembly according to a first aspect of the present invention, the stator assembly being disposed in the motor cavity, the lead wire extending into the electrical cavity through the communication port, and the periphery of the lead wire being sealed to the periphery of the communication port.

[0025] According to the second aspect of the present invention, the reliability of the motor during operation can be improved by providing the stator assembly according to the first aspect of the present invention.

[0026] The vehicle according to a third aspect of the present invention includes: the motor described above according to the third aspect of the present invention.

[0027] According to the third aspect of the present invention, the reliability of the vehicle during operation can be improved by equipping it with the motor described above.

[0028] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0029] Figure 1This is a schematic diagram of a stator assembly according to an embodiment of the present utility model;

[0030] Figure 2 yes Figure 1 A schematic diagram of the oil collection end cap shown;

[0031] Figure 3 yes Figure 1 A schematic diagram of the sealing gasket shown;

[0032] Figure 4 This is a schematic diagram of the lead-out component according to an embodiment of the present utility model;

[0033] Figure 5 This is a cross-sectional view of the mating protrusion and mating groove according to an embodiment of the present utility model;

[0034] Figure 6 This is a cross-sectional view of the mating protrusion and mating groove according to another embodiment of the present invention;

[0035] Figure 7 This is a cross-sectional view of the mating protrusion and mating groove according to another embodiment of the present invention;

[0036] Figure 8 This is a cross-sectional view of the mating protrusion and mating groove according to another embodiment of the present invention.

[0037] Figure label:

[0038] 100. Stator assembly;

[0039] 10. Stator core; 11. Fitting protrusions;

[0040] 20. Winding coil; 21. Lead wire;

[0041] 30. Oil collecting end cap; 31. Outlet hole; 32. Second oil passage;

[0042] 40. Lead-out part; 41. Mating groove; 42. First oil passage;

[0043] 50. Sealing gasket; 51. Clearance opening; 52. Connecting groove;

[0044] 60. Sealing adhesive groove; 61. First groove section; 62. Second groove section;

[0045] 200. Electrical components. Detailed Implementation

[0046] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0047] The following is for reference. Figures 1-8 A stator assembly 100 according to a first aspect embodiment of the present invention is described.

[0048] like Figure 1 and Figure 2 As shown, the stator assembly 100 according to the first aspect of the present invention includes: a stator core 10, an oil collecting end cap 30, and a lead-out member 40.

[0049] Specifically, the stator core 10 is provided with a winding coil 20, the winding coil 20 has a lead wire 21, the oil collecting end cover 30 is provided on one end of the stator core 10 in the axial direction and covers the winding coil 20, the oil collecting end cover 30 has a lead hole 31, the lead member 40 is provided at the lead hole 31 and seals the lead hole 31, the lead wire 21 passes through the lead member 40 and the lead wire 21 is sealed to the lead member 40.

[0050] The lead wire 21 is connected to the electrical components inside the motor cavity. During the operation of the motor, the current enters the winding coil 20 through the lead wire 21, causing the winding coil 20 to generate a magnetic field. There is oil in the stator core 10 and in the space between the oil collector end cover 30 and the stator core 10. The winding coil 20 is immersed in the oil and exchanges heat with the oil, thereby cooling the winding coil 20.

[0051] Understandably, when the lead wire 21 is directly passed through the oil collection end cap 30, the stress distribution between the periphery of the lead wire 21 and the passing part is poor due to the force caused by the bending of the lead wire 21. The gap distribution between the lead wire 21 and the passing part is prone to unevenness. Furthermore, when sealing the lead wire 21 and the oil collection end cap 30, the cross-sectional size of the lead wire 21 is small, and due to the assembly process, it is difficult for the operator to perform the sealing operation of the lead wire 21 inside the oil collection end cap 30. As a result, the sealing reliability between the lead wire 21 and the oil collection end cap 30 is poor.

[0052] In this embodiment, by setting the lead-out part 40, the lead-out part 40 and the lead wire 21 can be sealed and connected before the oil collecting end cap 30 is assembled into the stator assembly 100 during the production process. In this way, the operating space is larger when the lead wire 21 and the lead-out part 40 are sealed and connected, and it is easier to perform the sealing operation on the lead wire 21 and the lead-out part 40.

[0053] When the lead-out part 40 is sealed to the lead-out hole 31, the lead-out part 40 is relatively large, and the relative posture between the lead-out part 40 and the lead-out hole 31 is easy to fix. In this way, the gap distribution between the lead-out part 40 and the lead-out hole 31 is relatively uniform. After the lead-out part 40 and the lead-out hole 31 are sealed to each other, the sealing reliability between the lead-out part 40 and the lead-out hole 31 is high.

[0054] This improves the sealing reliability between the lead-out line 21 and the oil collection end cap 30.

[0055] According to the first aspect of the present invention, the stator assembly 100, by providing the lead-out member 40, has the following advantages during the production process: Firstly, the operating space is larger when the lead-out wire 21 and the lead-out member 40 are sealed together, making it easier to seal the lead-out wire 21 and the lead-out member 40. Secondly, the relative posture between the lead-out member 40 and the lead-out hole 31 is easier to fix, making the gap distribution between the lead-out member 40 and the lead-out hole 31 more uniform, which can improve the sealing reliability between the lead-out member 40 and the lead-out hole 31. Thus, the sealing reliability between the lead-out wire 21 and the oil collection end cap 30 can be improved, thereby improving the reliability of the motor during operation.

[0056] In some embodiments of this utility model, the lead-out member 40 is an integrally formed part, and the lead-out line 21 is integrally formed and sealed to the lead-out member 40.

[0057] During the integral molding process of the lead-out part 40, the lead wire 21 is passed through the mold of the lead-out part 40. The molten raw material for the lead-out part 40 will surround the lead wire 21 within the mold. Thus, after the liquid raw material cools and solidifies, the lead wire 21 can pass through the lead-out part 40. It is understood that during the integral molding process of the lead-out part 40, the raw material and the lead wire 21 are in close contact, resulting in a high degree of sealing reliability between the lead wire 21 and the lead-out part 40. This further improves the sealing reliability between the lead wire 21 and the oil collecting end cap 30.

[0058] During the assembly process, the lead-out part 40 can be directly assembled to the lead-out hole 31 of the oil collection end cover 30, which can realize the threading and fixing of the lead-out wire 21, and reduce the assembly difficulty.

[0059] In some embodiments of this utility model, the lead-out member 40 is disposed in the lead-out hole 31, and the lead-out member 40 is in sealing contact with the inner wall of the lead-out hole 31. Therefore, during assembly, it is easier to assemble the lead-out member 40 into position, thereby further reducing assembly difficulty. Furthermore, the lead-out member 40 being disposed in the lead-out hole 31 reduces the space occupied by the stator assembly 100 at the lead-out hole 31 in the radial direction of the stator assembly 100, thereby reducing the difficulty of arranging the stator assembly 100 on the motor.

[0060] In some embodiments of this utility model, such as Figures 4-8 As shown, one of the periphery of the lead-out member 40 and the inner wall of the lead-out hole 31 is provided with a mating protrusion 11, and the other is provided with a mating groove 41. The mating protrusion 11 is sealed and abuts against the mating groove 41.

[0061] In this way, the outer wall of the protrusion 11 and the inner wall of the groove 41 cooperate to prevent oil from flowing out between the inner wall of the lead-out member 40 and the inner wall of the lead-out hole 31. On the one hand, this increases the sealing area between the inner wall of the lead-out member 40 and the inner wall of the lead-out hole 31. On the other hand, the protrusion 11 and the groove 41 can seal and abut in multiple directions. When a gap is generated between the outer wall of the protrusion 11 and the inner wall of the groove 41 in one direction, the outer wall of the protrusion 11 and the inner wall of the groove 41 can still seal and abut in other directions, thus achieving a seal between the periphery of the lead-out member 40 and the inner wall of the lead-out hole 31. Therefore, the sealing reliability between the lead-out member 40 and the oil collection end cap 30 can be improved.

[0062] The cross-section of the protrusion 11 can be rectangular, trapezoidal, or semi-circular.

[0063] In some embodiments of this utility model, such as Figure 6 As shown, there are one or more mating protrusions 11, for example, there can be one, two, three or four mating protrusions 11, and one or more mating grooves 41, for example, there can be one, two, three or four mating grooves 41, with the mating protrusions 11 and the mating grooves 41 corresponding to each other. Thus, each mating protrusion 11 and mating groove 41 can seal between the lead-out member 40 and the oil collecting end cap 30, which can further improve the sealing reliability between the lead-out member 40 and the oil collecting end cap 30.

[0064] In some embodiments of this utility model, such as Figure 1 and Figure 2 As shown, the outlet hole 31 is formed on the outer peripheral surface of the oil collecting end cap 30 in the radial direction of the stator assembly 100. This reduces the axial size of the motor, thereby simplifying the motor's layout.

[0065] In some embodiments of this utility model, such as Figure 1 and Figure 2 As shown, the lead-out hole 31 penetrates the oil collecting end cap 30 at one end of the stator assembly 100 facing the stator core 10 in the axial direction, and the lead-out member 40 is sealed to the stator core 10. Thus, the through-hole 31 on the oil collecting end cap 30 can provide clearance space for the lead wire 21 and the lead-out member 40 during the assembly process, thereby further reducing the assembly difficulty.

[0066] In some embodiments of this utility model, such as Figures 1-3 As shown, the stator assembly 100 further includes: a sealing gasket 50, which covers the end of the stator core 10; an oil collecting end cap 30, which covers the sealing gasket 50; a clearance opening 51 is formed at the radially outer end of the sealing gasket 50; a lead-out member 40 passes through the clearance opening 51 and is sealed to the stator core 10; and the lead-out member 40 and the sealing gasket 50 are sealed and abutted together in the circumferential direction of the stator assembly 100. By providing the sealing gasket 50, the sealing reliability between the oil collecting end cap 30 and the stator core 10 can be improved, and the sealing abutment between the lead-out member 40 and the inner wall of the clearance opening 51 can reduce the assembly difficulty.

[0067] In some embodiments of this utility model, such as Figures 1-4 As shown, a first oil passage 42 extending circumferentially along the stator assembly 100 is formed between the lead-out member 40 and the stator core 10, and a second oil passage 32 extending circumferentially along the stator assembly 100 is formed between the oil collecting end cap 30 and the sealing gasket 50. The first oil passage 42 and the second oil passage 32 are connected, and both the first oil passage 42 and the second oil passage 32 are connected to the oil passage in the stator core 10.

[0068] During the operation of the motor, the oil in the stator core 10 is connected between the oil passage, the first oil passage 42 and the second oil passage 32 in the stator core 10. During the flow of the oil, it exchanges heat with the stator core 10 and the winding coil 20, thereby cooling the stator core 10. The first oil passage 42 and the second oil passage 32 are located at the axial ends of the stator core 10, which can improve the distribution range of the oil in the stator core 10, thereby improving the cooling efficiency and cooling uniformity of the stator assembly 100.

[0069] In some embodiments of the present invention, the lead-out member 40 has a first oil passage 42 connected to the first oil passage 42 formed at at least one end of the stator assembly 100, and the clearance opening 51 has a second oil passage 32 connected to the second oil passage 32 formed on at least one inner wall of the stator assembly 100 in the circumferential direction. The first oil passage and the second oil passage are opposite to and connected to each other so that the first oil passage 42 and the second oil passage 32 are connected.

[0070] During motor operation, oil flows between the first oil passage 42 and the second oil passage 32 through the first oil port and the second oil port. It is easier to form the first oil port on the lead-out member 40 than on the stator core 10, which reduces production difficulty. The second oil port is formed on the inner wall of the clearance opening 51 of the sealing gasket 50, rather than on the oil collection end cover 30, which reduces structural damage to the sealing contact between the oil collection end cover 30 and the lead-out member 40. During motor operation, the deformation at the sealing contact between the oil collection end cover 30 and the lead-out member 40 is less, which can further improve the sealing reliability between the oil collection end cover 30 and the lead-out member 40.

[0071] In some embodiments of this utility model, such as Figure 4 As shown, the end of the lead-out member 40 facing the stator core 10 is recessed towards the oil collecting end cap 30 to form a first oil passage 42 with one end open. The stator core 10 covers the opening of the first oil passage 42. Therefore, when forming the first oil passage 42, it is not necessary to change the structure of the stator core 10, thereby reducing the difficulty of production and product design.

[0072] In some embodiments of this utility model, such as Figure 4 As shown, the first oil passage 42 penetrates both ends of the lead-out member 40 in the circumferential direction of the stator assembly 100, and the penetration opening of the first oil passage 42 forms the first oil port. This simplifies the structure of the lead-out member 40, thereby further reducing manufacturing and product design difficulties.

[0073] In some embodiments of this utility model, such as Figures 1-4 As shown, a connecting groove 52 is formed on the surface of the sealing gasket 50 facing the oil collecting end cap 30. The connecting groove 52 communicates with the second oil passage 32, and one end of the connecting groove 52 penetrates the inner wall of the relief opening 51. The penetration opening of the connecting groove 52 on the inner wall of the relief opening 51 forms a second oil passage. This allows for the connection between the first oil passage 42 and the second oil passage 32, and the difficulty of slotting the sealing gasket 50 is relatively low, further reducing production difficulty.

[0074] In some embodiments of this utility model, such as Figure 2 As shown, the end of the oil collecting cap 30 facing the sealing gasket 50 is recessed away from the sealing gasket 50 to form an open second oil passage 32, and the sealing gasket 50 covers the opening of the second oil passage 32. Therefore, the structure of the sealing gasket 50 does not need to be changed when forming the second oil passage 32, which can further reduce the difficulty of production and product design.

[0075] In some embodiments of this utility model, the stator assembly 100 is further provided with a sealing connection portion. The sealing connection portion is U-shaped and arranged around the lead-out hole 31. Both ends of the sealing connection portion extend to the stator core 10, and the sealing connection portion is used for a circumferential sealing connection with the communication port of the electrical cavity. By providing the sealing connection portion, a sealed connection between the electrical cavity of the motor and the stator assembly 100 can be achieved, thereby reducing the probability of external objects entering the electrical cavity and affecting the normal operation of the electrical components inside the electrical cavity, and further improving the reliability of the motor during operation.

[0076] In some embodiments of this utility model, such as Figures 1-3 As shown, the sealing connection includes a sealing glue groove 60, which is a U-shaped groove. The sealing glue groove 60 surrounds the lead-out member 40, and both ends of the sealing glue groove 60 extend to the stator core 10. During the production process, sealant is filled in the sealing glue groove 60, and the periphery of the communication port of the electrical cavity is sealed to the stator assembly 100 through the sealant. The sealant has high sealing reliability and is easy to operate during the production process, which can reduce the production difficulty.

[0077] The sealing groove extends to the oil collection end cap 30 and the sealing gasket 50. On the oil collection end cap 30, the sealing groove has a first groove segment 61 that is U-shaped and surrounds the outside of the outlet hole 31. On the radially outer sidewall of the sealing gasket 50, the sealing groove has a second groove segment 62 that penetrates the outer wall of the sealing gasket 50 along the stator assembly 100 axially. The end of the first groove segment 61 is opposite to the end of the first groove segment 61.

[0078] In some embodiments of this utility model, the lead-out part 40 is an injection-molded part. Injection-molded parts have higher strength and higher production precision, which can improve the structural strength of the lead-out part 40 and the fitting precision between the lead-out part 40 and the lead-out hole 31, and further improve the sealing reliability between the lead-out part 40 and the inner wall of the lead-out hole 31.

[0079] The motor according to a second aspect of the present invention includes: a housing and the stator assembly 100 according to the first aspect of the present invention.

[0080] Specifically, the housing defines a motor cavity and an electrical cavity, which are connected by a communication port. The stator assembly 100 is located in the motor cavity, and the lead wire 21 extends into the electrical cavity through the communication port. The periphery of the lead wire 40 is sealed to the periphery of the communication port.

[0081] The electrical cavity contains an electrical component 200, which is connected to a lead wire 21. During the operation of the motor, current flows from the electrical component 200 through the lead wire 21 to the winding coil 20. At the same time, the electrical component 200 also controls the magnetic field state of the winding coil 20, thereby realizing the function of the motor.

[0082] The motor according to the second aspect embodiment of the present invention can improve its reliability during operation by providing the stator assembly 100 according to the first aspect embodiment of the present invention.

[0083] The vehicle according to a third aspect of the present invention includes: the motor described above according to the second aspect of the present invention.

[0084] The vehicle according to the third aspect embodiment of the present invention can improve the reliability during operation by providing the motor according to the second aspect embodiment of the present invention.

[0085] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0086] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0087] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0088] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0089] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A stator assembly characterized by, The application relates to a stator assembly. The stator assembly comprises a stator core, a winding coil arranged in the stator core, and a lead-out wire of the winding coil. An oil collecting end cover is arranged at one end of the stator core in the axial direction and covers the winding coil. A lead-out piece is arranged at the lead-out hole and seals the lead-out hole.

2. The stator assembly of claim 1, wherein, The lead-out piece is an integral part, and the lead-out wire is integrally connected with the lead-out piece.

3. The stator assembly of claim 1, wherein, The lead-out piece is arranged in the lead-out hole and is in sealing abutment with the inner wall of the lead-out hole.

4. The stator assembly of claim 3, wherein, One of the peripheral edge of the lead-out piece and the inner wall of the lead-out hole is provided with a matching protrusion, and the other is provided with a matching groove.

5. The stator assembly of claim 4, wherein, The matching protrusion is in sealing abutment in the matching groove.

6. A stator assembly according to any one of claims 1-5, characterized in that The matching protrusion and the matching groove are in one-to-one correspondence.

7. The stator assembly of claim 6, wherein, The lead-out hole is formed on the peripheral surface of the oil collecting end cover in the radial direction of the stator assembly.

8. The stator assembly of claim 7, wherein, The lead-out hole penetrates the oil collecting end cover towards the stator core in the axial direction of the stator assembly. The application further relates to a sealing gasket.

9. The stator assembly of claim 8, wherein, The sealing gasket is arranged at the end of the stator core, and the oil collecting end cover is arranged on the sealing gasket.

10. The stator assembly of claim 9, wherein, The radial outer end of the sealing gasket is provided with a bypass hole, and the lead-out piece penetrates the bypass hole and is in sealing abutment with the stator core in the circumferential direction of the stator assembly. A first oil channel is formed between the lead-out piece and the stator core in the circumferential direction of the stator assembly.

11. The stator assembly of claim 10, wherein, A second oil channel is formed between the oil collecting end cover and the sealing gasket in the circumferential direction of the stator assembly.

12. The stator assembly of claim 11, wherein, The first oil channel and the second oil channel are in communication.

13. The stator assembly of claim 10, wherein, The lead-out piece is recessed towards the oil collecting end cover at one end of the stator assembly.

14. The stator assembly of claim 13, wherein, The stator core covers the open end of the first oil channel. The first oil channel penetrates the lead-out piece at both ends in the circumferential direction of the stator assembly. The penetration hole of the first oil channel forms the first oil channel. The sealing gasket is recessed away from the sealing gasket at one end of the oil collecting end cover. The second oil channel is open. The sealing gasket covers the open end of the second oil channel.

15. A stator assembly according to any of claims 7 to 14, wherein, The stator assembly is further provided with a sealing connecting part, which is U-shaped and surrounds the lead-out hole, and two ends of the sealing connecting part extend to the stator core respectively, and the sealing connecting part is used for sealing connection with the periphery of the communication opening of the electrical cavity.

16. The stator assembly of claim 15, wherein, The sealing connecting part comprises a sealing glue groove, which is a U-shaped groove, surrounds the lead-out part, and two ends of the sealing glue groove extend to the stator core respectively.

17. The stator assembly of claim 1, wherein, The lead-out part is an injection molding part.

18. An electric machine characterized by Comprise: a housing, which defines a motor cavity and an electrical cavity in the housing, and the motor cavity and the electrical cavity are communicated through a communication opening; the stator assembly of any one of claims 1-17, which is arranged in the motor cavity, the lead-out wire extends into the electrical cavity through the communication opening, and the periphery of the lead-out part is sealingly connected with the periphery of the communication opening.

19. A vehicle characterized by comprising: Comprise: the motor of claim 18.

Images