Stator assembly, motor assembly, compressor, and vehicle

Abstract

The application provides a stator assembly, a motor assembly, a compressor and a vehicle. The stator assembly is used for a compressor of a vehicle and comprises: a frame having a first cavity and a through slot located outside a first end of the first cavity; a stator core and a stator winding, both of which are arranged in the first cavity; a stator lead, a first end of which is electrically connected to the stator winding and is arranged in the through slot; and a potting structure, which wraps at least part of the stator winding, at least part of the stator core and at least the first end of the stator lead. The application wraps the stator core, the stator winding and the first end of the stator lead electrically connected to the stator winding in the potting structure, separates the stator core, the stator winding and the stator lead from the cooling medium, ensures that the cooling medium cannot enter the terminal block assembly along the path of the stator lead, and thus protects the entire electrical component.

Description

Technical Field

[0001] This application relates to the field of motor technology, and more specifically, to a stator assembly, a motor assembly, a compressor, and a vehicle. Background Technology

[0002] Most of the wires in the motor housing are exposed to the air. However, related technologies typically utilize a continuous flow of cooling air through the motor housing to cool the motor's rotor bearings. This cooling air can sometimes condense into water droplets under low-temperature conditions.

[0003] Cooling air or condensed water can enter the motor's terminal block assembly through the wires, causing problems such as insulation failure and even short circuits. Summary of the Invention

[0004] This application addresses the shortcomings of existing methods by proposing a stator assembly, motor assembly, compressor, and vehicle to solve the technical problem that cooling air or condensed water can enter the terminal block assembly through exposed wires, causing insulation failure or even short circuit.

[0005] In a first aspect, embodiments of this application provide a stator assembly for a vehicle compressor, comprising:

[0006] The base has a first cavity and a through groove located outside the first end of the first cavity;

[0007] The stator core and stator windings are both housed in the first cavity;

[0008] The first end of the stator lead is electrically connected to the stator winding and passes through the slot;

[0009] The potting structure encapsulates at least a portion of the stator windings and at least a portion of the stator core, and at least encapsulates the first end of the stator leads.

[0010] Optionally, the frame includes:

[0011] The sleeve forms the first cavity;

[0012] An end plate is located at the first end of the sleeve, and a through groove is formed at the end plate.

[0013] Optionally, the potting structure includes:

[0014] First potting section, filling the through groove;

[0015] The second potting section fills the gap between the stator winding, stator core and sleeve, and wraps the inner wall of the stator winding, stator core and at least part of the sleeve.

[0016] Optionally, the end plate is provided with a first groove communicating with the through slot;

[0017] The potting structure also includes a first protrusion connected to the first potting portion;

[0018] The first protrusion fills the first groove.

[0019] Optionally, the sleeve is provided with a second groove communicating with the first cavity;

[0020] The potting structure also includes a second protrusion connected to the second potting portion;

[0021] The second protrusion fills the second groove.

[0022] Optionally, the first filling part and the second filling part are integrally formed.

[0023] Optionally, the stator assembly includes at least one of the following:

[0024] The second end of the stator lead extends to the outside of the frame;

[0025] The potting structure encloses a second cavity for assembling the rotor assembly;

[0026] The materials used for potting structures include at least one of epoxy resin, polyurethane, and silicone.

[0027] Secondly, embodiments of this application provide a motor assembly, including:

[0028] Motor housing, having a motor cavity;

[0029] The stator assembly, as described above, is fixed inside the motor cavity;

[0030] The rotor assembly is assembled in the first cavity of the stator assembly and is rotatably connected to the motor housing.

[0031] Optionally, the motor assembly also includes:

[0032] The terminal block assembly, connected to the outside of the motor housing, has a receiving cavity for accommodating the stator leads;

[0033] The potting structure isolates the motor cavity from the housing cavity.

[0034] Optionally, the terminal block assembly includes a connector assembly, with the second end of the stator lead electrically connected to the connector assembly.

[0035] Optionally, the space between the rotor assembly and the motor housing, between the rotor assembly and the stator assembly, and between the stator assembly and the motor housing forms a first cooling channel;

[0036] The potting structure isolates the first cooling channel from the containment cavity.

[0037] Optionally, the motor housing includes:

[0038] The motor housing body is detachably and sealed to the stator assembly;

[0039] The back plate is detachably connected to the first end of the motor housing body and forms the motor cavity;

[0040] The first end of the rotor assembly is rotatably connected to the back plate, and the second end is rotatably connected to the motor housing body.

[0041] Thirdly, embodiments of this application provide a compressor, including:

[0042] As described above, the stator assembly; or,

[0043] As described above, the motor assembly.

[0044] Fourthly, embodiments of this application provide a vehicle, including:

[0045] Such as the compressor mentioned above.

[0046] The beneficial technical effects of the technical solutions provided in this application include:

[0047] In this embodiment, the potting structure not only wraps at least a portion of the stator winding and at least a portion of the stator core, but also at least wraps the first end of the stator lead that is electrically connected to the stator winding. The potting structure can isolate at least a portion of the stator winding from the cooling medium (e.g., cooling air), isolate at least a portion of the stator core from the cooling medium, and isolate at least the first end of the stator lead from the cooling medium. This prevents the cooling medium from intruding into the stator core, stator winding, and stator lead wrapped by the potting structure, and also prevents the cooling medium from entering the terminal block assembly of the motor assembly along the path of the stator lead. This protects the entire electrical component and solves problems such as insulation failure or even short circuit caused by the cooling medium.

[0048] Additional aspects and advantages of this application will be set forth in part in the description which follows, and will become apparent from the description or may be learned by practice of this application. Attached Figure Description

[0049] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0050] Figure 1 A schematic diagram of the structure of a compressor provided in an embodiment of this application;

[0051] Figure 2 This is an exploded view of a compressor provided in an embodiment of this application;

[0052] Figure 3 This is a schematic diagram of the structure of a stator assembly provided in an embodiment of this application;

[0053] Figure 4 A cross-sectional view of a stator assembly provided in an embodiment of this application;

[0054] Figure 5 A simplified cross-sectional view of a portion of the frame structure of a stator assembly provided in an embodiment of this application (the first groove, the second groove, and the spiral groove are not shown).

[0055] Figure 6 This is a partial cross-sectional view of a compressor provided in an embodiment of this application;

[0056] Figure 7 for Figure 6 A partially enlarged schematic diagram of the motor assembly of the compressor.

[0057] Figure 8 for Figure 7 Another enlarged schematic diagram of the central motor assembly;

[0058] Figure 9 for Figure 7 Another enlarged schematic diagram of the motor assembly.

[0059] Figure label:

[0060] 1000 - Compressor;

[0061] 100-Stator assembly;

[0062] 10-Base;

[0063] 11-First cavity; 12-Through groove; 13-Sleeve; 14-End plate; 15-First groove; 16-Second groove; 17-Spiral groove;

[0064] 20 - Stator core;

[0065] 30 - Stator winding;

[0066] 40 - Stator lead;

[0067] 41 - First lead; 42 - Second lead;

[0068] 50-Potting structure;

[0069] 51-Second cavity; 52-First filling part; 53-Second filling part; 54-First protrusion; 55-Second protrusion;

[0070] 200-Rotor assembly;

[0071] 300 - Motor housing;

[0072] 301 - Motor cavity; 302 - Motor housing body; 303 - Back plate;

[0073] 500-Terminal Block Component;

[0074] 501 - Receiving cavity; 502 - Terminal block; 503 - Terminal block cover plate;

[0075] 511 - First connector; 512 - Second connector;

[0076] 601 - First cooling channel;

[0077] 6011 - Inflow portion; 6012 - Flowing through portion; 6013 - Outflow portion;

[0078] 602 - Second cooling channel;

[0079] 701 - First seal; 702 - Second seal; 703 - Third seal; 704 - Fourth seal;

[0080] 800 - Compressor assembly;

[0081] 900-Turbine assembly;

[0082] 901 - Turbine; 902 - Turbine housing assembly. Detailed Implementation

[0083] The embodiments of this application are described below with reference to the accompanying drawings. It should be understood that the embodiments described below with reference to the accompanying drawings are exemplary descriptions for explaining the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions of the embodiments of this application.

[0084] Those skilled in the art will understand that, unless specifically stated otherwise, the terms "described" and "the" as used herein may also include plural forms. It should be further understood that the term "comprising" as used in the specification of this application means the presence of the stated features, integers, and / or components, but does not exclude other features, information, data, steps, operations, elements, components, and / or combinations thereof supported by this art. The term "and / or" as used herein refers to at least one of the items defined by the term; for example, "A and / or B" can be implemented as "A," or as "B," or as "A and B."

[0085] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0086] The stator assembly, motor assembly, compressor, and vehicle provided in this application aim to solve the technical problem in the related art where cooling air or condensed water can enter the terminal block assembly along its path through exposed wires or unsealed cavities, causing insulation failure or even short circuit.

[0087] The technical solution of this application and how it solves the above-mentioned technical problems are described in detail below with specific embodiments. It should be noted that the following embodiments can be referenced, borrowed, or combined with each other, and the same terms, similar features, and similar implementation steps in different embodiments will not be described again.

[0088] It should be noted that, in the embodiments of this application, Figures 2 to 7 The middle arrow indicates a cavity or space, etc.

[0089] This application provides a stator assembly 100 for use in a vehicle compressor. A schematic diagram of the stator assembly 100 is shown below. Figure 3 and Figure 4 As shown, the stator assembly 100 includes:

[0090] The base 10 has a first cavity 11 and a through groove 12 located outside the first end of the first cavity 11;

[0091] The stator stack 20 and the stator winding 30 are both located inside the first cavity 11;

[0092] The first end of the stator leading wire 40 is electrically connected to the stator winding 30 and passes through the through slot 12;

[0093] The stator potting 50 encapsulates at least a portion of the stator winding 30 and at least a portion of the stator core 20, and at least encapsulates the first end of the stator lead 40.

[0094] In this embodiment, the frame 10 supports the stator core 20, stator winding 30, stator leads 40, and potting structure 50. The stator winding 30 is electrically connected to an external power source via the stator leads 40, and the stator assembly 100 generates a magnetic field when energized. The rotor assembly 200 of the motor assembly rotates under the influence of the magnetic field generated by the stator assembly 100, outputting power and converting electrical energy into mechanical energy.

[0095] In this embodiment, the potting structure 50 not only encapsulates at least a portion of the stator winding 30 and at least a portion of the stator core 20, but also at least encapsulates the first end of the stator lead 40 that is electrically connected to the stator winding 30. The potting structure 50 can isolate at least a portion of the stator winding 30 from the cooling medium (such as cooling air or water condensed from the air), isolate at least a portion of the stator core 20 from the cooling medium, and isolate at least the first end of the stator lead 40 from the cooling medium. This prevents the cooling medium from intruding into the stator core 20, stator winding 30, and stator lead 40 encapsulated by the potting structure 50, and also prevents the cooling medium from entering the terminal block assembly 500 of the motor assembly along the path of the stator lead 40. This protects the entire electrical components (such as the stator lead 40 or the connector assembly electrically connected to the second end of the stator lead 40), and solves problems such as insulation failure or even short circuit caused by the cooling medium.

[0096] In this embodiment, the stator core 20 and the stator winding 30 are both disposed within the first cavity 11 of the frame 10. The potting structure 50 encapsulates at least a portion of the stator core 20 and at least a portion of the stator winding 30, and a portion of the potting structure 50 (e.g., the second potting portion 53) fills a portion of the first cavity 11. The first end of the stator lead 40 and a portion of the lead near the first end pass through the through slot 12. The potting structure 50 at least encapsulates the first end of the stator lead 40 and a portion of the lead near the first end, and another portion of the potting structure 50 (e.g., the first potting portion 52) fills the through slot 12.

[0097] It should be noted that in the embodiments of this application, "at least part" includes both part and all. For example, at least part of the stator winding 30 can be a portion of the stator winding 30 or all of the stator winding 30. The meanings of "at least part" or "at least" in this document are the same or similar, and will not be repeated here.

[0098] Optionally, such as Figures 2 to 5 As shown in the embodiment of this application, the base 10 includes a status sleeve 13 and an end plate 14. The sleeve 13 forms a first cavity 11. The end plate 14 is disposed at the first end of the sleeve 13, and a through groove 12 is formed at the end plate 14. The sleeve 13 and the end plate 14 are connected to form the base 10.

[0099] Optionally, in this embodiment, the end plate 14 and the sleeve 13 are integrally formed.

[0100] Of course, in other optional embodiments of this application, the end plate 14 and the sleeve 13 can be designed as separate structures according to actual needs. Optionally, the end plate 14 and the sleeve 13 can be detachably fixedly connected.

[0101] Optionally, such as Figures 3 to 5As shown in the embodiment of this application, the through groove 12 is located on the radial outer side of the first cavity 11.

[0102] Optionally, in this embodiment, the stator core 20 is detachably installed in the first cavity 11 of the sleeve 13, which facilitates assembly and simplifies operation.

[0103] Optionally, in this embodiment, the stator core 20 and the inner wall of the sleeve 13 are interference-fitted, which facilitates assembly and processing.

[0104] Optionally, in this embodiment of the application, the stator winding 30 is detachably connected to the stator core 20, which facilitates assembly and simplifies operation.

[0105] Optionally, in the embodiments of this application, the stator winding 30 and the stator core 20 are connected in a mating or nested manner.

[0106] Optionally, such as Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown in the embodiment of this application, the potting structure 50 includes a first potting portion 52 and a second potting portion 53. The first potting portion 52 fills the through groove 12. The second potting portion 53 fills the gap between the stator winding 30, the stator core 20 and the sleeve 13, and wraps the inner wall of the stator winding 30, the stator core 20 and at least part of the sleeve 13.

[0107] In this embodiment, the first potting portion 52 encapsulates the first end of the stator lead 40 and a portion of the lead near the first end, and fills the through groove 12. The first potting portion 52 completely isolates the first end of the stator lead 40 and a portion of the lead near the first end from the cooling medium, and completely isolates the spaces on both sides of the through groove 12, preventing the cooling medium located in one side of the through groove 12 from entering the space on the other side of the through groove 12 (e.g., ...). Figure 3 , Figure 4 , Figure 6 and Figure 7 The space extending from the second end of the middle stator lead 40 ensures that the cooling medium cannot enter the receiving cavity 501 of the terminal block assembly 500 of the motor assembly along the path of the stator lead 40. This prevents the cooling medium from corroding the stator lead 40 and the terminal block assembly 500, thus protecting the electrical components and avoiding insulation failures or even short circuits.

[0108] In this embodiment, the second potting portion 53 can isolate the stator winding 30 from the cooling medium, the stator core 20 from the cooling medium, and at least part of the inner wall of the sleeve 13 from the cooling medium. This prevents the cooling medium (such as cooling air or water condensed from cooling air) from intruding into the stator winding 30, the stator core 20, and the sleeve 13, as well as the gap between the stator winding 30, the stator core 20, and the sleeve 13. This prevents the cooling medium from corroding the components and protects the electrical components, thus avoiding insulation failures or even short circuits.

[0109] Optionally, such as Figure 4 , Figure 6 and Figure 7 As shown in this embodiment, the end plate 14 divides the space on both sides into: a first side space near the sleeve 13 (e.g., Figure 4 , Figure 6 and Figure 7 The space where the terminal block assembly 500 is located or the receiving cavity 501 of the terminal block assembly 500) and the second side space away from the sleeve 13 (e.g. Figure 6 and Figure 7 The outflow portion 6013 of the first cooling channel 601). The through slot 12 is located on the end plate 14, and one end of the through slot 12 is connected to the first side space (e.g., Figure 6 and Figure 7 The middle terminal block assembly 500 is connected to the receiving cavity 501 at one end, and the other end is connected to the second side space (e.g., Figure 6 and Figure 7 The outflow portion (6013) is connected.

[0110] In this embodiment, the first potting portion 52 fills the through groove 12, and the first end of the stator lead 40 and a portion of the lead near the first end are completely wrapped by the first potting portion 52, completely isolating the first side space and the second side space. This prevents the cooling medium from entering the second side space from the first side space through the through groove 12 and the stator lead 40 passing through the through groove 12, thereby preventing the cooling medium from corroding the electrical components in the second side space and protecting the electrical components.

[0111] Optionally, in the embodiments of this application, the first potting portion 52 and the second potting portion 53 are integrally formed.

[0112] Optionally, such as Figure 7 and Figure 8 As shown in this embodiment, the end plate 14 is provided with a first sealing groove 15 communicating with the through groove 12. The potting structure 50 also includes a first protrusion 54 connected to the first potting portion 52. The first protrusion 54 fills the first groove 15.

[0113] In this embodiment, the first potting portion 52 fills the through groove 12, and the first protrusion 54 fills the first groove 15. By setting the first groove 15 and the first protrusion 54, the filling effect of the potting structure 50 in the through groove 12 can be enhanced, the sealing performance of the potting structure 50 can be enhanced, gaps can be prevented between the potting structure 50 and the end plate 14, and the isolation effect on the cooling medium (such as cooling air or water condensed from cooling air) can be enhanced, thereby better protecting the electrical components.

[0114] Optionally, such as Figure 7 and Figure 8 As shown in the embodiments of this application, the number of the first groove 15 and the first protrusion 54 that mates with the first groove 15 can be one, or two or more. The first groove 15 and the first protrusion 54 mate in a one-to-one correspondence.

[0115] Optionally, in this embodiment, the shape of the first protrusion 54 is adapted to the shape of the first groove 15 to further improve the sealing performance.

[0116] Optionally, in this embodiment, the first potting portion 52 and the first protrusion 54 are integrally formed.

[0117] Optionally, such as Figure 7 and Figure 8 As shown in the embodiment of this application, the end plate 14 has a recessed inner wall at the through groove 12 to form a first groove 15.

[0118] Of course, in other optional embodiments of this application, a protrusion located within the through groove 12 can be provided at the end plate 14, and a groove adapted to the protrusion can be provided at a corresponding position of the first potting portion 52. Optionally, the protrusion is formed by the inner wall of the end plate 14 protruding outward at the through groove 12.

[0119] Optionally, such as Figure 7 and Figure 9 As shown in this embodiment, the sleeve 13 is provided with a second sealing groove 16 that communicates with the first cavity 11. The potting structure 50 also includes a second protrusion 55 connected to the second potting portion 53. The second protrusion 55 fills the second sealing groove 16.

[0120] In this embodiment, the second potting portion 53 wraps around at least part of the inner wall of the sleeve 13 in the first cavity 11, and the second protrusion 55 fills the second groove 16. By providing the second groove 16 and the second protrusion 55, the filling effect of the potting structure 50 in the first cavity 11 can be enhanced, the sealing performance of the potting structure 50 can be enhanced, gaps can be prevented between the potting structure 50 and the sleeve 13, and the isolation effect on the cooling medium (such as cooling air or water condensed from cooling air) can be enhanced, thereby better protecting the electrical components.

[0121] Optionally, such as Figure 7 and Figure 9 As shown in the embodiments of this application, the number of the second groove 16 and the number of the second protrusion 55 that mates with the second groove 16 can be one, or two or more. The second groove 16 and the second protrusion 55 mate in a one-to-one correspondence.

[0122] Optionally, in this embodiment, the shape of the second protrusion 55 is adapted to the shape of the second groove 16 to further improve the sealing performance.

[0123] Optionally, in this embodiment, the second potting portion 53 and the second protrusion 55 are integrally formed.

[0124] Optionally, such as Figure 7 and Figure 9 As shown in the embodiment of this application, the sleeve 13 is recessed in the inner wall of the first cavity 11 to form a second groove 16.

[0125] Of course, in other optional embodiments of this application, a protrusion located within the first cavity 11 can be provided at the sleeve 13, and a groove adapted to the protrusion can be provided at a corresponding position of the second potting portion 53. Optionally, the protrusion is formed by the sleeve 13 protruding outward from the inner wall of the first cavity 11.

[0126] Optionally, in this embodiment, the material of the potting structure 50 includes at least one of a thermally conductive material and an insulating material.

[0127] Optionally, in the embodiments of this application, the material of the potting structure 50 has both high thermal conductivity and high insulation.

[0128] In this embodiment, the potting structure 50 is made of a thermally conductive material, which can quickly dissipate heat from the stator assembly 100, achieving rapid cooling and preventing the stator assembly 100 from overheating, thus avoiding increased losses or operational problems. For example, the second potting portion 53 encapsulates at least a portion of the stator winding 30 and at least a portion of the stator core 20. The second potting portion 53 can quickly dissipate heat from the stator winding 30 and stator core 20, achieving rapid cooling and ensuring the normal operation of the stator winding 30 and stator core 20, reducing losses. The potting structure 50 is made of an insulating material, which can prevent abnormal electrical connections between electrical components.

[0129] Optionally, in the embodiments of this application, the material of the potting structure 50 includes at least one of epoxy resin, polyurethane, and silicone.

[0130] Optionally, in this embodiment, the potting structure 50 is made of epoxy resin.

[0131] Optionally, such as Figures 2 to 4, Figure 6 and Figure 7 As shown in this embodiment, the second end of the stator lead 40 extends to the outside of the frame 10 (e.g., to the aforementioned first side space). The first potting portion 52 fills the through groove 12, completely enclosing the first end of the stator lead 40 and the portion of the lead near the first end. The first potting portion 52 can completely isolate the first end of the stator lead 40 and the portion of the lead near the first end from the second end of the stator lead 40, preventing the cooling medium (e.g., cooling air or water condensed from cooling air) from entering the space where the second end of the stator lead 40 is located along its path (e.g., ...). Figure 6 and Figure 7 The receiving cavity 501 of the terminal block assembly 500 can prevent the cooling medium from corroding the electrical components and thus protect the electrical components.

[0132] Optionally, such as Figure 3 and Figure 4 As shown, the potting structure 50 forms a second cavity 51 for assembling the rotor assembly 200. The rotor assembly 200 of the motor assembly is assembled in the second cavity 51 and is able to rotate in response to the magnetic field generated by the stator assembly 100, thereby outputting power.

[0133] Optionally, such as Figure 3 and Figure 4 As shown in the embodiment of this application, the second cavity 51 and the first cavity 11 are coaxially arranged. This design enables the rotor assembly 200 to experience more uniform forces in the magnetic field generated by the stator assembly 100, resulting in more stable rotation.

[0134] Of course, in other optional embodiments of this application, the axis of the second cavity 51 and the axis of the first cavity 11 can be arranged in parallel according to actual needs.

[0135] Optionally, such as Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown in the embodiment of this application, the stator winding 30 is completely encapsulated by the potting structure 50, and the stator winding 30 is not exposed in the second cavity 51.

[0136] Optionally, such as Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown in the embodiment of this application, the stator core 20 is ring-shaped, and the stator core 20 is completely encapsulated by the potting structure 50 except for the inner ring. The inner ring of the stator core 20 is exposed in the second cavity 51.

[0137] Optionally, in this embodiment, the stator core 20 is annular, with the inner circle of the stator core 20 exposed in the second cavity 51, and otherwise completely encapsulated by the potting structure 50.

[0138] In this embodiment, when the rotor assembly 200 is assembled in the second cavity 51, the magnetic field generated by the stator assembly 100 can drive the rotor assembly 200 to rotate. The second potting section 53 can isolate part of the stator core 20 from the cooling medium and completely isolate the stator winding 30 from the cooling medium, protecting the electrical components. Moreover, the second potting section 53 can also conduct heat, enabling rapid cooling of the stator core 20 and the stator winding 30.

[0139] Of course, in other optional embodiments of this application, the second potting portion 53 can completely enclose the stator core 20 and stator winding 30 within the first cavity 11 of the sleeve 13, depending on actual needs. While the magnetic field generated by the stator assembly 100 can drive the rotor assembly 200 to rotate, it can also completely isolate the stator core 20 and stator winding 30 from the cooling medium, protecting the electrical components. Furthermore, the second potting portion 53 can also conduct heat, enabling rapid cooling of the stator core 20 and stator winding 30.

[0140] In this embodiment, the entire stator assembly 100 (including the stator core 20, stator winding 30, at least a portion of the inner wall of the sleeve 13, and the first end of the stator lead 40) is encapsulated in the potting structure 50. This isolates the cooling medium from the stator core 20, stator winding 30, at least a portion of the inner wall of the sleeve 13, and stator lead 40 of the stator assembly 100, ensuring that water or gas cannot enter the receiving cavity 501 of the terminal block assembly 500 through the stator lead 40, thereby protecting the entire electrical component.

[0141] Optionally, in this embodiment of the application, potting technology is used to form the potting structure 50 by using a potting tool.

[0142] The stator assembly 100 provided in this application embodiment can be realized by simply equipping it with some potting molds and process improvements, as well as some parts processing improvements.

[0143] Optionally, such as Figures 2 to 4 , Figure 6 and Figure 7 As shown in this embodiment, at least a portion of the outer periphery of the base 10 is provided with a spiral groove 17. The spiral groove 17 is used to form a second cooling channel 602 with the inner wall of the motor housing 300. The second cooling channel 602 is a spiral cooling channel.

[0144] Optionally, such as Figures 2 to 4 As shown in the embodiment of this application, the outer peripheral wall of the sleeve 13 is provided with a spirally extending ridge, which and the outer peripheral wall of the sleeve 13 form a spiral groove 17.

[0145] Optionally, the stator assembly provided in this application embodiment can be applied to the field of motors, and further, it can be applied to the motor of a fuel cell compressor.

[0146] Based on the same inventive concept, this application provides a motor assembly, the structural schematic diagram of which is shown below. Figure 2 and Figure 6 As shown, the motor assembly includes:

[0147] Motor housing 300, having motor cavity 301;

[0148] The stator assembly 100, as described above, is fixed inside the motor cavity 301;

[0149] The rotor assembly 200 is assembled in the first cavity 11 of the stator assembly 100 and is rotatably connected to the motor housing 300.

[0150] In this embodiment, the motor housing 300 is used to support the stator assembly 100 and the rotor assembly 200. When the stator assembly 100 is energized, it generates a magnetic field. The rotor assembly 200 rotates in response to the magnetic field generated by the stator assembly 100, outputting power and realizing the conversion of electrical energy and mechanical energy.

[0151] It should be noted that since the motor assembly provided in this application embodiment includes the stator assembly provided in this application embodiment, the motor assembly provided in this application embodiment also has the above-mentioned beneficial effects of the stator assembly provided in this application embodiment, which will not be repeated here.

[0152] Optionally, such as Figure 4 and Figure 6 As shown in the embodiment of this application, the potting structure 50 (e.g., the second potting part 53) located in the first cavity 11 forms the second cavity 51, and the rotor assembly 200 is assembled in the second cavity 51.

[0153] Optionally, such as Figure 6 and Figure 7 As shown in the embodiment of this application, the stator assembly 100 is fixedly disposed in the motor cavity 301 of the motor housing 300. The motor housing 300 is provided with a clearance hole (not shown in the figure). The second end of the stator lead 40 of the stator assembly 100 extends to the outside of the motor housing 300 after passing through the clearance hole.

[0154] In this embodiment, since the potting structure 50 (e.g., the first potting portion 52) of the stator assembly 100 fills the through groove 12, completely enclosing the first end of the stator lead 40 and a portion of the lead near the first end, the potting structure 50 (e.g., the first potting portion 52) completely covers the motor cavity 301 (e.g., the second side space mentioned above or, for example, the space on the second side) where the stator assembly 100 is located. Figure 6 and Figure 7 The outlet portion 6013 of the first cooling channel 601 is completely isolated from the outside of the motor housing 300 where the second end of the stator lead 40 is located. The cooling medium flowing through the motor cavity 301 cannot pass through the stator lead 40 and enter the space where the second end of the stator lead 40 is located (e.g., the space on the first side mentioned above or, for example, the space on the first side mentioned above). Figure 6 and Figure 7 The receiving cavity 501 of the terminal block assembly 500 can protect the entire electrical components and solve problems such as insulation failure or even short circuit caused by the cooling medium.

[0155] Optionally, such as Figure 1 , Figure 2 , Figure 6 and Figure 7 As shown in the embodiment of this application, the motor assembly further includes a terminal block assembly 500.

[0156] The terminal block assembly 500 is connected to the outside of the motor housing 300. The terminal block assembly 500 has a receiving cavity 501 for accommodating the stator leads 40. The potting structure 50 isolates the motor housing 301 from the receiving cavity 501.

[0157] In this embodiment, the first end of the stator lead 40 is electrically connected to the stator winding 30; the second end of the stator lead 40 extends to the outside of the motor housing 300 and is electrically connected to the connector assembly of the terminal block assembly 500, thereby connecting to an external power source to energize the stator assembly 100. The receiving cavity 501 of the terminal block assembly 500 can accommodate the stator lead 40 extending to the outside of the motor housing 300.

[0158] In this embodiment, the stator assembly 100 is fixed inside the motor housing 301, and the second end of the stator lead 40 extends to the outside of the motor housing 300 and is accommodated in the receiving cavity 501. A potting structure 50 (e.g., a first potting portion 52) encapsulates the motor housing 301 (e.g., ... Figure 6 and Figure 7 The outflow portion 6013 of the first cooling channel 601 is completely isolated from the receiving cavity 501, so that the cooling medium flowing through the motor cavity 301 cannot pass through the stator lead 40 and enter the receiving cavity 501 along the path of the stator lead 40, thereby protecting the entire electrical components and solving problems such as insulation failure or even short circuit caused by the cooling medium.

[0159] Optionally, such as Figure 6 and Figure 7 As shown in this embodiment, the terminal block assembly 500 includes a connector assembly, and the second end of the stator lead 40 is electrically connected to the connector assembly. The stator lead 40 of the stator assembly 100 is electrically connected to an external power source through the connector assembly, thereby enabling the stator assembly 100 to be powered by an external power source.

[0160] Optionally, such as Figures 1 to 4 , Figure 6 and Figure 7 As shown in the embodiment of this application, the stator lead 40 includes a first lead 41, the first end of the first lead 41 is electrically connected to the lead-out end of the stator winding 30, and passes through the through slot 12; the connector assembly includes a first connector 511, and the second end of the first lead 41 is electrically connected to the first connector 511.

[0161] Optionally, in this embodiment, the first connector 511 includes, but is not limited to, a high-voltage connector (HV connector). The first lead 41 is electrically connected to an external power source through the first connector 511 to provide power to the stator assembly 100.

[0162] Optionally, such as Figures 1 to 4 , Figure 6 and Figure 7 As shown in the embodiment of this application, the stator lead 40 includes a second lead 42, the first end of the second lead 42 is electrically connected to the stator winding 30 and passes through the through slot 12; the connector assembly includes a second connector 512, the second end of the second lead 42 is electrically connected to the second connector 512.

[0163] Optionally, in this embodiment, the second connector 512 includes, but is not limited to, a low-voltage connector (LV connector). The second connector 512 is electrically connected to the second lead 42 of the stator assembly 100, and the temperature of the stator assembly 100 can be detected through the second connector 512 to facilitate cooling control.

[0164] In some optional embodiments of this application, the motor assembly may further include a third potting portion, disposed within the receiving cavity 501 and encapsulating at least a portion of the stator leads 40, depending on actual needs. This design can improve the efficiency of the motor cavity 301 (e.g., Figure 6 and Figure 7 The isolation effect between the outflow portion 6013 of the first cooling channel 601 and the receiving cavity 501 better prevents the cooling medium from entering the receiving cavity 501, thereby improving the protection effect on electrical components.

[0165] Optionally, in this embodiment, the third potting portion is connected to the first potting portion 52. A portion of the stator lead 40 that extends from and is close to the through slot 12 is wrapped by the third potting portion, which can better isolate the motor cavity 301 (e.g., Figure 6 and Figure 7 The outflow portion 6013 of the first cooling channel 601 and the receiving cavity 501 better block the cooling medium from entering the receiving cavity 501, thereby improving the protection effect on electrical components.

[0166] Optionally, in this embodiment, the third potting portion fills the clearance hole on the motor housing 300.

[0167] Optionally, such as Figure 6 and Figure 7 As shown in the embodiment of this application, the space between the rotor assembly 200 and the motor housing 300, between the rotor assembly 200 and the stator assembly 100, and between the stator assembly 100 and the motor housing 300 is connected to form a first cooling channel 601; the potting structure 50 isolates the first cooling channel 601 from the receiving cavity 501.

[0168] Optionally, in this embodiment, the rotor assembly 200 is rotatably connected to the motor housing 300 via bearings.

[0169] In this embodiment, a cooling medium (e.g., cooling air) flows through the first cooling channel 601 to cool the bearing that enables the rotor assembly 200 to rotate. The potting structure 50 isolates the first cooling channel 601 from the receiving cavity 501, thereby isolating the cooling medium (e.g., cooling air) in the first cooling channel 601 from the receiving cavity 501. This prevents the cooling medium from entering the receiving cavity 501, thus protecting electrical components (e.g., stator leads 40 and connector assemblies) and preventing insulation failures or even short circuits.

[0170] Optionally, such as Figure 1 , Figure 2 , Figure 6 and Figure 7 As shown in the embodiment of this application, the motor housing 300 includes a motor housing body 302 and a back plate 303. The motor housing body 302 is detachably and sealingly connected to the stator assembly 100. The back plate 303 is detachably connected to the first end of the motor housing body 302 and forms a motor cavity 301.

[0171] The first end of the rotor assembly 200 is rotatably connected to the back plate 303, and the second end is rotatably connected to the motor housing body 302.

[0172] In this embodiment, the motor housing body 302 and the stator assembly 100, as well as the back plate 303 and the motor housing body 302, are detachably connected, facilitating assembly and operation. The back plate 303 and the motor housing body 302 form a motor cavity 301, within which the stator assembly 100 is assembled. The rotor assembly 200 is rotatably connected to both the back plate 303 and the motor housing body 302, enabling the rotor assembly 200 to rotate in response to the magnetic field of the stator assembly 100 and output power.

[0173] Optionally, in this embodiment, the first end of the rotor assembly 200 is rotatably connected to the back plate 303 via an air bearing, and the second end of the rotor assembly 200 is rotatably connected to the motor housing body 302 via an air bearing.

[0174] Optionally, in this embodiment, the air bearing includes, but is not limited to, a radial bearing or a thrust bearing. The first end of the rotor assembly 200 is rotatably connected to the back plate 303 via a radial bearing, and the second end of the rotor assembly 200 is rotatably connected to the motor housing body 302 via both a radial bearing and a thrust bearing.

[0175] Of course, in other optional embodiments of this application, the rotor assembly 200 may be rotatably connected to the back plate 303 and the motor housing body 302 via ball bearings or the like, depending on actual needs.

[0176] Optionally, such as Figure 6 and Figure 7 As shown in the embodiment of this application, the space between the rotor assembly 200 and the motor housing body 302, and the space between the rotor assembly 200 and the back plate 303, form the inflow portion 6011 of the first cooling channel 601. The space between the rotor assembly 200 and the stator assembly 100 (specifically, for example, the inner wall of the second cavity 51 enclosed by the potting structure 50) forms the flow portion 6012 of the first cooling channel 601. The space between the stator assembly 100 (specifically, for example, the wall surface of the end plate 14 and the first potting portion 52 of the potting structure 50 away from the sleeve 13) and the motor housing 300 (specifically, for example, the wall surface of the back plate 303 facing the motor housing body 302) forms the outflow portion 6013 of the first cooling channel 601.

[0177] The inflow section 6011, the flow section 6012, and the outflow section 6013 are connected in sequence to form the first cooling channel 601.

[0178] Optionally, such as Figure 6 and Figure 7As shown in this embodiment, the cooling medium (e.g., cooling air) enters the inflow portion 6011 of the first cooling channel 601 from the compressor assembly 800 end to cool the bearings of the rotor assembly 200. The cooling medium then flows through the flow portion 6012 of the first cooling channel 601 and then into the outflow portion 6013 of the first cooling channel 601. Because the first potting portion 52 of the potting structure 50 completely isolates the first cooling channel 601 (specifically the outflow portion 6013) from the receiving cavity 501, the cooling medium (e.g., cooling air) in the first cooling channel 601 cannot enter the receiving cavity 501, thereby protecting electrical components (e.g., stator leads 40 and connector assemblies) and preventing insulation failures or even short circuits. The cooling medium in the outflow portion 6013 of the first cooling channel 601 is discharged from the turbine assembly 900 end.

[0179] Optionally, such as Figure 1 , Figure 2 and Figure 7 As shown in the embodiment of this application, the terminal block assembly 500 includes a terminal block 502 and a terminal block cover 503. The terminal block 502 is connected to the motor housing body 302 and is located outside the motor housing body 302. The terminal block cover 503 is connected to the terminal block 502 and forms a receiving cavity 501.

[0180] Optionally, in this embodiment, the terminal block 502 is detachably connected to the motor housing body 302.

[0181] Optionally, such as Figure 7 As shown in the embodiment of this application, a third sealing element 703 is provided between the terminal block 502 and the motor housing body 302 to make the terminal block 502 and the motor housing body 302 sealed together.

[0182] Optionally, in this embodiment, the terminal block cover 503 and the terminal block 502 are detachably connected or openable to open or close the receiving cavity 501 for easy maintenance or replacement.

[0183] Optionally, in this embodiment of the application, a sealing element is provided between the terminal block cover plate 503 and the terminal block 502 to make the terminal block cover plate 503 and the terminal block 502 sealed together.

[0184] Optionally, in this embodiment, the connector assembly is detachably disposed on the terminal block 502.

[0185] Optionally, such as Figures 2 to 4 , Figure 6 and Figure 7As shown in this embodiment, the inner wall of the motor housing body 302 and the spiral grooves 17 on at least part of the outer periphery of the base 10 form a second cooling channel 602. The cooling medium flows through the second cooling channel 602 to cool the motor assembly.

[0186] Optionally, in this embodiment of the application, the outer wall of the stator assembly 100 (specifically, for example, the outer wall of the sleeve 13) is interference-fitted with the inner wall of the motor housing body 302.

[0187] Optionally, such as Figure 4 and Figure 7 As shown in the embodiment of this application, a first sealing element 701 is provided between the outer wall of the sleeve 13 and the inner wall of the motor housing body 302. This makes the sleeve 13 and the motor housing body 302 sealed together, thereby isolating the stator lead 40 and its connection with the connector assembly from the motor cavity 301. The cooling medium in the second cooling channel 602 cannot enter the receiving cavity 501, thus completely isolating the stator lead 40 or connector assembly in the receiving cavity 501 from humid cooling air or condensed water. This prevents the cooling air or condensed water from corroding the stator lead 40 or connector assembly, thereby protecting the electrical components.

[0188] Optionally, such as Figure 4 and Figure 7 As shown in the embodiment of this application, the end plate 14 and the back plate 303 are detachably connected. A second sealing element 702 is provided between the end plate 14 and the back plate 303, thereby sealing the connection between the end plate 14 and the back plate 303.

[0189] Optionally, in the embodiments of this application, the sealing element includes, but is not limited to, a sealing ring or sealing ring, such as an O-ring sealing ring or O-ring sealing.

[0190] Optionally, the motor assembly provided in this application embodiment can be applied to the field of electric motors. Optionally, this application embodiment provides an electric motor with a potted stator winding.

[0191] Optionally, the motor assembly provided in this application embodiment can be applied to the field of compressors or expanders. Further, the motor assembly provided in this application embodiment can be applied to fuel cell compressors or turbo expanders, etc.

[0192] Based on the same inventive concept, this application provides a compressor 1000, the structural schematic diagram of which is shown below. Figure 1 , Figure 2 and Figure 6 As shown, the compressor 1000 includes: a stator assembly 100 as described above; or a motor assembly as described above.

[0193] It should be noted that since the compressor provided in this application embodiment includes the stator assembly or motor assembly provided in this application embodiment, the compressor provided in this application embodiment also has the above-mentioned beneficial effects of the stator assembly or motor assembly provided in this application embodiment, which will not be repeated here.

[0194] Optionally, such as Figure 1 , Figure 2 , Figure 6 and Figure 7 As shown in the embodiment of this application, the compressor 1000 includes a compressor assembly 800, a motor assembly, and a turbine assembly 900. The motor assembly is disposed between the compressor assembly 800 and the turbine assembly 900.

[0195] Optionally, such as 1, Figure 2 and Figure 6 As shown in the embodiments of this application, the compressor assembly 800 includes a compressor housing assembly and a compressor impeller. The turbine assembly 900 includes a turbine housing assembly 902 and a turbine 901.

[0196] The motor housing 300 of the motor assembly is disposed between the compressor housing assembly and the volute assembly 902. The compressor impeller is fixedly mounted at one end of the rotor assembly 200 of the motor assembly and located within the impeller chamber defined by the compressor housing assembly. The turbine 901 is fixedly mounted at the other end of the rotor assembly 200 and located within the turbine chamber defined by the volute assembly 902. The rotor assembly 200, the compressor impeller, and the turbine 901 can rotate synchronously.

[0197] Optionally, in this embodiment, the volute assembly 902 and the back plate 303 are detachably and sealingly connected. A fourth seal 704 is provided between the volute assembly 902 and the back plate 303.

[0198] Optionally, in this embodiment, the compressor 1000 can be applied to a fuel cell stack.

[0199] Optionally, in the embodiments of this application, the compressor 1000 includes, but is not limited to, a reciprocating compressor, a rotary compressor, an axial compressor, a centrifugal compressor, or a mixed-flow compressor.

[0200] Optionally, in this embodiment, the compressor 1000 can be a turbocharger, a fuel cell compressor, or even a full fuel cell compressor.

[0201] Based on the same inventive concept, embodiments of this application provide a vehicle, which includes: a compressor as described above; or an engine as described above.

[0202] It should be noted that since the vehicle provided in this application embodiment includes the compressor or engine provided in this application embodiment, the vehicle provided in this application embodiment also has the above-mentioned beneficial effects of the compressor or engine provided in this application embodiment, which will not be repeated here.

[0203] Optionally, in the embodiments of this application, the vehicle includes, but is not limited to, passenger cars, commercial vehicles (such as trucks), or racing cars.

[0204] Optionally, in the embodiments of this application, the vehicle includes, but is not limited to, fuel (e.g., gasoline or diesel) vehicles, natural gas (e.g., natural gas) vehicles, hybrid vehicles, or new energy vehicles.

[0205] Optionally, in this embodiment, the vehicle includes, but is not limited to, hydrogen fuel cell vehicles, electric vehicles, or intelligent connected vehicles.

[0206] By applying the embodiments of this application, at least the following beneficial effects can be achieved:

[0207] In this embodiment, the frame supports the stator core, stator windings, stator leads, and potting structure. The stator windings are electrically connected to an external power source via the stator leads, and the stator assembly generates a magnetic field when energized. The rotor assembly of the motor assembly rotates under the influence of the magnetic field generated by the stator assembly, outputting power and converting electrical energy into mechanical energy.

[0208] In this embodiment, the potting structure not only wraps at least a portion of the stator winding and at least a portion of the stator core, but also at least wraps the first end of the stator lead that is electrically connected to the stator winding. The potting structure can isolate at least a portion of the stator winding from the cooling medium (e.g., cooling air), isolate at least a portion of the stator core from the cooling medium, and isolate at least the first end of the stator lead from the cooling medium. This prevents the cooling medium from intruding into the stator core, stator winding, and stator lead wrapped by the potting structure. Furthermore, the cooling medium cannot enter the terminal block assembly of the motor assembly along the path of the stator lead, thereby protecting the entire electrical component and solving problems such as insulation faults or even short circuits caused by the cooling medium.

[0209] In the description of this application, the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate directions or positional relationships based on the exemplary directions or positional relationships shown in the accompanying drawings. They are used to facilitate the description or simplification of the embodiments of this application and are not intended to indicate or imply that the device or component referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0210] 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. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0211] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0212] The above description is only a partial implementation of this application. It should be noted that for those skilled in the art, other similar implementation methods based on the technical concept of this application, without departing from the technical concept of this application, also fall within the protection scope of the embodiments of this application.

Claims

1. A stator assembly characterized by, A compressor for a vehicle, comprising: a frame comprising a sleeve and an end plate, the sleeve enclosing a first cavity, the end plate being disposed at a first end of the sleeve in an axial direction, a through slot being formed at the end plate, a stator core and a stator winding, both of which are disposed in the first cavity; a stator lead, a first end of the stator lead being electrically connected to the stator winding and being disposed in the through slot; and a potting structure, the potting structure wrapping at least part of the stator winding and at least part of the stator core, and wrapping at least the first end of the stator lead, wherein the end plate is provided with a first recess in communication with the through slot, wherein the potting structure comprises a first potting portion and a first protrusion, the first potting portion filling the through slot formed at the end plate to wrap at least the first end of the stator lead, the first protrusion being located radially outward of the first potting portion and being connected to the first potting portion, and wherein the first protrusion fills the first recess.

2. The stator assembly of claim 1, wherein, The potting structure further comprises a second potting portion, the second potting portion filling a gap between the stator winding, the stator core and the sleeve, and wrapping the stator winding, the stator core and at least part of an inner wall of the sleeve.

3. The stator assembly of claim 2, wherein, The sleeve is provided with a second recess in communication with the first cavity; The potting structure further comprises a second protrusion connected to the second potting portion; The second protrusion fills the second recess.

4. The stator assembly of any of claims 2-3, wherein, The first potting portion and the second potting portion are integrally formed.

5. The stator assembly of claim 1, wherein, At least one of the following is included: A second end of the stator lead extends to outside of the frame; The potting structure encloses a second cavity for assembling a rotor assembly; A material of the potting structure comprises at least one of epoxy, polyurethane and silicone.

6. An electric machine assembly characterized by Comprise: A motor housing having a motor cavity; The stator assembly as claimed in any one of claims 1 to 5 is fixedly arranged in the motor cavity; And A rotor assembly is assembled in the first cavity of the stator assembly and is rotatably connected with the motor housing.

7. The electric machine assembly of claim 6, wherein, The motor assembly further comprises: A terminal block assembly connected to outside of the motor housing, having a receiving cavity for receiving the stator lead, Wherein the potting structure isolates the motor cavity and the receiving cavity.

8. The electric machine assembly of claim 7, wherein, The terminal block assembly comprises a connector assembly, a second end of the stator lead is electrically connected with the connector assembly.

9. The electric machine assembly of claim 7, wherein, Spaces between the rotor assembly and the motor housing, between the rotor assembly and the stator assembly, and between the stator assembly and the motor housing form a first cooling channel; The potting structure isolates the first cooling channel and the receiving cavity.

10. The electric machine assembly of claim 6, wherein, The motor housing comprises: A motor housing body, the motor housing body is detachably and sealingly connected with the stator assembly; A back plate, the back plate is detachably connected with a first end of the motor housing body and encloses the motor cavity, Wherein a first end of the rotor assembly is rotatably connected with the back plate, and a second end of the rotor assembly is rotatably connected with the motor housing body.

11. A compressor characterized by, Comprise: A stator assembly as claimed in any one of claims 1 to 5; Or, An electric machine assembly as claimed in any one of claims 6 to 10.

12. A vehicle characterized by comprising: Comprising: A compressor as claimed in claim 11.

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