Stator assembly and motor

Abstract

The embodiment of the invention discloses a stator assembly and a motor. The stator assembly includes a stator core and a conductor. The conductor comprises an inner-layer conductor, an outer-layer conductor and a bridging conductor, and the inner-layer conductor, the outer-layer conductor and the outer end face of the stator core are mutually matched to form an accommodating gap; wherein the bridging conductor comprises an inner-layer wire outlet part, a bridging part and an outer-layer wire outlet part which are connected in sequence, the bridging part is arranged in the accommodating gap in a penetrating manner, and the inner-layer wire outlet part is connected with the outer-layer wire outlet part through the bridging part. The bridging part in the stator assembly can be communicated with the inner-layer avoiding part and the outer-layer avoiding part, and the structure of the bridging part can replace a three-phase connecting piece in the related technology so as to play a connecting role; meanwhile, the stator assembly is arranged in the accommodating gap formed by the inner-layer conductor and the outer-layer conductor, so that the requirement of the stator assembly on the axial height can be reduced, and the space utilization rate of the stator assembly is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of winding structures, and particularly to a stator assembly and a motor. Background Art

[0002] In recent years, the new energy vehicle market has developed rapidly. As a core component of new energy vehicles, the motor has received much attention, and the requirements for the motor space envelope have also increased accordingly.

[0003] In related technologies, as Figure 1 shown, for the conventional winding outgoing line, a certain number of axially external connecting wires need to be extended respectively on the inner and outer sides in the radial direction of the winding. To achieve circuit connection, the three-phase connector needs to have inner and outer bridging copper bars and external connecting copper bars to respectively achieve inner and outer bridging and external power connection. Also, because from the axial view (as Figure 2 shown), there is an intersection between the inner and outer bridging copper bars and the external outgoing copper bars, so the copper bars of the three-phase component need to be arranged in a layered and elevated manner, which leads to an excessive axial envelope of the three-phase component, resulting in a large occupied space of the winding structure in related technologies and a defect of low space utilization rate in motor products. Summary of the Invention

[0004] The purpose of the present invention is to provide a stator assembly and a motor. By providing an inner layer avoidance portion, a bridging portion, and an outer layer avoidance portion, the inner layer outgoing line portion can be directly connected to the outer layer outgoing line portion. And because the inner layer avoidance portion and the outer layer avoidance portion can be misaligned with the inner layer conductor and the outer layer conductor respectively by using their own structures, and the bridging portion can pass through the accommodation gap, the original winding space can be effectively utilized. Thus, while completing the inner and outer bridging, the number of inner and outer bridging copper bars of the three-phase connector is reduced, and the axial height of the stator assembly is lowered.

[0005] An embodiment of the present invention discloses a stator assembly, which includes:

[0006] A stator core;

[0007] A conductor, including an inner layer conductor, an outer layer conductor, and a bridging conductor. The inner layer conductor, the outer layer conductor, and the outer end face of the stator core cooperate to form an accommodation gap;

[0008] Wherein, the bridging conductor includes an inner layer outgoing line portion, a bridging portion, and an outer layer outgoing line portion. The bridging portion passes through the accommodation gap, and the inner layer outgoing line portion is connected to the outer layer outgoing line portion through the bridging portion.

[0009] Further, the jumper conductor further includes an inner layer avoidance portion and an outer layer avoidance portion, and the inner layer lead-out portion, the inner layer avoidance portion, the jumper portion, the layer avoidance portion, and the outer layer lead-out portion are connected in sequence; wherein, the inner layer avoidance portion is bent along the radial direction so that the inner layer avoidance portion and the inner layer conductor are misaligned with each other; the outer layer avoidance portion is bent along the radial direction so that the outer layer avoidance portion and the outer layer conductor are misaligned with each other.

[0010] Further, the jumper portion is a straight segment structure, the jumper portion is parallel to and does not contact the outer end face of the stator core, and the extension line of the jumper portion in the radial direction intersects the central axis of the stator core.

[0011] Further, the jumper portion has a plurality of avoidance segments, the heights of the plurality of avoidance segments in the axial direction are different from each other, and the extension line of the jumper portion in the radial direction intersects the central axis of the stator core.

[0012] Further, the outer contour of the jumper portion in the axial direction is wavy.

[0013] Further, the inner layer avoidance portion includes a first left bending segment, a first left inclined straight segment, a first inner-outer jumper segment, a first right inclined straight segment, and a first right bending segment that are connected in sequence. The first left bending segment is bent inward along the radial direction, the first right bending segment is bent outward along the radial direction, the free end of the first left bending segment is connected to the inner layer lead-out portion, and the free end of the first right bending segment is connected to the jumper portion.

[0014] Further, the first inner-outer jumper segment includes a first segment and a second segment, the inclination direction of the first segment is opposite to that of the second segment, and the first segment and the second segment are arranged in a misaligned manner in the radial direction.

[0015] Further, the outer layer avoidance portion includes a second left bending segment, a second left inclined straight segment, a second inner-outer jumper segment, a second right inclined straight segment, and a second right bending segment that are connected in sequence. The second left bending segment is bent inward along the radial direction, the second right bending segment is bent outward along the radial direction, the free end of the second left bending segment is connected to the jumper portion, and the free end of the second right bending segment is connected to the outer layer lead-out portion.

[0016] Further, the second inner-outer jumper segment includes a third segment and a fourth segment, the inclination direction of the third segment is opposite to that of the fourth segment, and the third segment and the fourth segment are arranged in a misaligned manner in the radial direction.

[0017] Further, the inner conductor and the outer conductor are respectively circumferential bridging wires arranged in an array according to the slot numbers of the stator core. Any one of the circumferential bridging wires includes a wire straight segment, a wire bending segment, and an out-of-slot straight segment. The wire bending segments, the out-of-slot straight segments of two adjacent circumferential bridging wires, and the outer end face of the stator core cooperate with each other to form the accommodation gap.

[0018] Further, the number of the accommodation gaps is multiple, and the multiple accommodation gaps are arranged at equal intervals circumferentially. The number of the bridging conductors does not exactly correspond to the number of the accommodation gaps, and at least one of the accommodation gaps is penetrated by the bridging conductor.

[0019] An embodiment of the present invention further discloses a motor, which includes the above-mentioned stator assembly.

[0020] The stator assembly and the motor provided by the present invention have at least the following beneficial effects, including but not limited to:

[0021] 1) By providing the inner avoidance portion, the bridging portion, and the outer avoidance portion, the inner lead-out portion of the stator assembly can be directly connected to the outer lead-out portion. Since the inner avoidance portion and the outer avoidance portion can be arranged in a staggered manner with the inner conductor and the outer conductor respectively by using their own structures, and the bridging portion can be penetrated into the accommodation gap, the original winding space can be effectively utilized. Thus, while completing the internal and external bridging, the number of internal and external bridging copper bars of the three-phase connecting member is reduced, and the axial height of the stator assembly is lowered.

[0022] 2) The first internal and external bridging segment and the second internal and external bridging segment are respectively provided with a first segment and a second segment, a third segment and a fourth segment that are staggered in the radial position to form a bending path similar to a "Z" shape. Thus, the bridging conductor can achieve multi-directional adaptability in a limited space, avoiding interference with the inner conductor and the outer conductor.

[0023] 3) The extension line of the bridging portion of the stator assembly in the radial direction intersects with the central axis of the stator core, that is, the midline extension line of the bridging portion passes through the central axis of the stator core. This structural design can ensure the symmetry of the bridging conductor in the magnetic circuit, suppress magnetic field distortion, and reduce iron loss and eddy current loss. Description of the Drawings

[0024] This specification will further illustrate in the form of exemplary embodiments, and these exemplary embodiments will be described in detail through the drawings. These embodiments are not restrictive. In these embodiments, the same numbers represent the same structures, where:

[0025] Figure 1 It is a structural schematic diagram of a stator assembly with internal and external double-sided lead-out of copper bars in the related art;

[0026] Figure 2 Side view of a stator assembly with copper bars leading out on both the inner and outer sides in the related art;

[0027] Figure 3 One of the structural schematic diagrams of the stator assembly provided by an embodiment of the present invention;

[0028] Figure 4 Another structural schematic diagram of the stator assembly provided by an embodiment of the present invention;

[0029] Figure 5 Partial top view of the stator assembly provided by an embodiment of the present invention;

[0030] Figure 6 Structural schematic diagram of the bridging conductor provided by an embodiment of the present invention;

[0031] Figure 7 One of the structural schematic diagrams when the bridging conductor provided by an embodiment of the present invention is arranged on the end face of the stator core;

[0032] Figure 8 Another structural schematic diagram when the bridging conductor provided by an embodiment of the present invention is arranged on the end face of the stator core;

[0033] Figure 9 Cooperating schematic diagram of the inner conductor and the outer conductor provided by an embodiment of the present invention;

[0034] Figure 10 Structural schematic diagram of the inner conductor provided by an embodiment of the present invention;

[0035] Figure 11 Structural schematic diagram of the bridging part provided in another implementation manner of an embodiment of the present invention.

[0036] Icon: 100 - stator assembly; 10 - stator core; 11 - inner conductor; 111 - straight wire segment; 112 - wire bending segment; 113 - straight segment out of the slot; 114 - accommodation gap; 12 - outer conductor; 13 - bridging conductor; 131 - inner lead-out part; 132 - inner avoidance part; 1321 - first left bending segment; 1322 - first left beveled straight segment; 1323 - first inner-outer bridging segment; 1324 - first right beveled straight segment; 1325 - first right bending segment; 1326 - first segment; 1327 - second segment; 133 - bridging part; 1331 - avoidance segment; 134 - outer avoidance part; 135 - outer lead-out part. Detailed implementation manners

[0037] The following describes the implementation manners of the present invention through specific examples. Those skilled in the art can easily understand the other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0038] It should be noted that the diagrams provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner. Therefore, only the components related to the present invention are shown in the diagrams, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and ratio of each component in actual implementation can be arbitrarily changed, and the component layout type may also be more complex.

[0039] Please refer to Figures 3 - 11 , this embodiment provides a stator assembly 100. The stator assembly 100 includes a stator core 10 and conductors. The conductors include an inner layer conductor 11, an outer layer conductor 12, and a bridging conductor 13. An accommodation gap 114 is formed by the cooperation of the inner layer conductor 11, the outer layer conductor 12, and the outer end face of the stator core 10 (as Figure 9 shown); wherein, the bridging conductor 13 includes an inner layer lead-out portion 131, a bridging portion 133, and an outer layer lead-out portion 135. The bridging portion 133 is disposed through the accommodation gap 114, and the inner layer lead-out portion 131 is connected to the outer layer lead-out portion 135 through the bridging portion 133.

[0040] In this embodiment, the bridging conductor 13 further includes an inner layer avoiding portion 132 and an outer layer avoiding portion 134. The inner layer lead-out portion 131, the inner layer avoiding portion 132, the bridging portion 133, the outer layer avoiding portion 134, and the outer layer lead-out portion 135 are connected in sequence. The inner layer avoiding portion 132 is bent along the radial direction so that the inner layer avoiding portion 132 is misaligned with the inner layer conductor 11. The bridging portion 133 is disposed through the accommodation gap 114. The outer layer avoiding portion 134 is bent along the radial direction so that the outer layer avoiding portion 134 is misaligned with the outer layer conductor 12. It can be understood that the bridging portion 133 connects the inner layer avoiding portion 132 and the outer layer avoiding portion 134. The structure of the bridging portion 133 can replace the three-phase connecting member in the related art to play a connecting role; at the same time, since it is disposed in the accommodation gap formed by the inner layer conductor and the outer layer conductor, the requirement for the axial height of the stator assembly can be reduced, and the space utilization rate of the stator assembly can be improved.

[0041] It should be noted that the radial direction in this embodiment refers to the radial direction of the stator core 10, and the axial direction refers to the axial direction of the stator core 10 (as Figure 3As shown, the circumferential direction refers to the circumferential direction of the stator core 10 (such as Figure 3 shown).

[0042] It should be noted that by providing the inner avoidance portion 132, the bridging portion 133, and the outer avoidance portion 134, the inner lead-out portion 131 of the stator assembly 100 can be directly connected to the outer lead-out portion 135. Moreover, since the inner avoidance portion 132 and the outer avoidance portion 134 can be misaligned with the inner conductor 11 and the outer conductor 12 respectively by using their own structures, and the bridging portion 133 can pass through the accommodation gap 114, the original winding space can be effectively utilized. Thus, while completing the internal and external bridging, the number of internal and external bridging copper bars of the three-phase connecting member is reduced, and the axial height of the stator assembly 100 is lowered.

[0043] Please refer to Figure 4 , Figure 4 which is the second structural schematic diagram of the stator assembly 100 provided by the embodiment of the present invention. It can be understood that in order to facilitate seeing the structure of the bridging conductor 13, Figure 4 part of the inner conductor 11 and the outer conductor 12 are omitted in . In this embodiment, the bridging portion 133 is a straight-line segment structure. The bridging portion 133 is parallel to and does not contact the outer end face of the stator core 10, and the extension line of the bridging portion 133 in the radial direction intersects the central axis of the stator core 10.

[0044] It should be noted that the bridging portion 133 is suspended and does not contact the stator core 10, which can provide a better ventilation path, making the heat of the winding part easier to dissipate, improving the heat dissipation efficiency, and reducing the temperature rise. At the same time, the extension line of the bridging portion 133 in the radial direction intersects the central axis of the stator core 10, which can improve the symmetry of the bridging conductor 13 in the magnetic circuit, suppress the magnetic field distortion, and reduce the iron loss and eddy current loss.

[0045] It is also worth noting that the bridging portion 133 with a straight-line segment structure also has the advantages of simple structure and easy manufacturing, which is conducive to industrial promotion and cost reduction.

[0046] Please refer to Figure 11 , Figure 11 which is the structural schematic diagram of the bridging portion 133 provided in another embodiment of the embodiment of the present invention. In this embodiment, the bridging portion 133 has a plurality of avoidance segments 1331, the heights of the plurality of avoidance segments 1331 in the axial direction are different from each other, and the extension line of the bridging portion 133 in the radial direction intersects the central axis of the stator core 10.

[0047] It should be noted that since the heights of multiple avoidance segments 1331 in the axial direction are different, they can better adapt to different installation space requirements, avoid interference between the bridging portion 133 and other components (such as the inner conductor 11 or the outer conductor 12), and improve the flexibility of winding arrangement.

[0048] Optionally, the outer contour of the bridging portion 133 in the axial direction is wavy.

[0049] Specifically, the wavy structure can make the bridging portion 133 more easily adapt to different space requirements during the assembly process, reduce stress concentration during installation, improve the structural stability after connection, and reduce the manufacturing difficulty. According to different specific implementation environments, the bridging portion 133 can also be in a straight corner shape or other shapes. This embodiment does not limit the specific structural type of the bridging portion 133, but only gives an example of its structural type.

[0050] Please refer to Figure 6 and Figure 7 , the inner avoidance portion 132 includes a first left bending segment 1321, a first left hypotenuse straight segment 1322, a first inner-outer bridging segment 1323, a first right hypotenuse straight segment 1324, and a first right bending segment 1325 connected in sequence. The first left bending segment 1321 is bent inward along the radial direction, the first right bending segment 1325 is bent outward along the radial direction, the free end of the first left bending segment 1321 is connected to the inner lead-out portion 131, and the free end of the first right bending segment 1325 is connected to the bridging portion 133.

[0051] It should be noted that the first left bending segment 1321 is bent inward and the first right bending segment 1325 is bent outward, which can make the inner avoidance portion 132 be arranged in a compact manner as a whole, bypass the inner conductor 11, effectively reduce the radial space occupied by the winding, optimize the stator structure, and improve the space utilization rate.

[0052] As Figure 8 shown, the first inner-outer bridging segment 1323 includes a first segment 1326 and a second segment 1327. The inclination direction of the first segment 1326 is opposite to that of the second segment 1327, and the first segment 1326 and the second segment 1327 are arranged in a staggered manner in the radial direction.

[0053] It should be noted that the inclination directions of the first segment 1326 and the second segment 1327 are opposite and they are radially staggered, which can make the first inner-outer bridging segment 1323 more compact and reasonable, avoid overlap or over-concentration between conductors, and improve the space utilization rate. In addition, it can make the conductor distribution more balanced, reduce the problem of too high local magnetic flux density, reduce the magnetic leakage loss, and improve the electromagnetic conversion efficiency.

[0054] In this embodiment, the outer layer avoidance portion 134 includes a second left bending segment (not shown in the figure), a second left hypotenuse straight segment (not shown in the figure), a second inner-outer bridging segment (not shown in the figure), a second right hypotenuse straight segment (not shown in the figure), and a second right bending segment (not shown in the figure) that are connected in sequence. The second left bending segment is bent inward along the radial direction, the second right bending segment is bent outward along the radial direction, the free end of the second left bending segment is connected to the bridging portion 133, and the free end of the second right bending segment is connected to the outer layer wire outlet portion 135.

[0055] It should be noted that the structures of the outer layer avoidance portion 134 and the inner layer avoidance portion 132 are similar and have the same beneficial effects.

[0056] In this embodiment, the second inner-outer bridging segment includes a third segment (not shown in the figure) and a fourth segment (not shown in the figure). The inclination direction of the third segment is opposite to that of the fourth segment, and the third segment and the fourth segment are arranged in a dislocation manner in the radial direction.

[0057] As Figure 9 and Figure 10 shown, the inner layer conductor 11 and the outer layer conductor 12 are respectively circumferentially bridging wires arranged in an array along the slot numbers of the stator core 10. Any circumferentially bridging wire includes a wire straight segment 111, a wire bending segment 112, and an out-of-slot straight segment 113. The wire bending segments 112 and the out-of-slot straight segments 113 of adjacent two circumferentially bridging wires cooperate with the outer end face of the stator core 10 to form a receiving gap 114.

[0058] It should be noted that both the inner layer conductor 11 and the outer layer conductor 12 adopt standardized circumferentially bridging wires, which can facilitate mold production and automatic winding. In this embodiment, they are only distinguished as the inner layer and the outer layer due to different positions. The conductor facing the central axis of the stator core 10 along the radial direction is the inner layer conductor 11, and the conductor far from the central axis of the stator core 10 is the outer layer conductor 12.

[0059] Optionally, the number of the receiving gaps 114 is multiple, and the multiple receiving gaps 114 are arranged at equal intervals along the circumferential direction. The number of the bridging conductors 13 does not exactly correspond to the number of the receiving gaps 114, and at least one receiving gap 114 is provided with a bridging conductor 13 passing through.

[0060] Specifically, the multiple receiving gaps 114 are arranged evenly along the circumferential direction, which can support the flexible threading of the bridging conductors 13 and adapt to different phase numbers or power requirements. At the same time, the number of the bridging conductors 13 does not exactly correspond to the number of the receiving gaps 114, and the threading position can be selected according to actual needs, improving the flexibility of the stator assembly 100 so that it can be applied to different working conditions.

[0061] This embodiment also provides a motor, which includes the stator assembly 100 described above and has all its beneficial effects.

[0062] The above embodiments are only used to exemplarily illustrate the principles and effects of the present invention, rather than to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

[0063] In the description herein, many specific details are provided, such as examples of components and / or methods, to provide a complete understanding of the embodiments of the present invention. However, those skilled in the art will recognize that the embodiments of the present invention can be practiced without one or more of the specific details or by other devices, systems, components, methods, parts, materials, parts, etc. In other cases, well-known structures, materials, or operations are not specifically shown or described in detail to avoid obscuring aspects of the embodiments of the present invention.

[0064] Throughout the specification, reference to "an embodiment", "embodiment" or "specific embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention and not necessarily in all embodiments. Thus, the appearances of the phrases "in an embodiment", "in an embodiment" or "in a specific embodiment" in various places throughout the specification are not necessarily referring to the same embodiment. Additionally, the particular features, structures, or characteristics of any specific embodiment of the present invention may be combined in any suitable manner with one or more other embodiments. It should be understood that other variations and modifications of the embodiments of the invention herein and shown may be made in accordance with the teachings herein and will be considered part of the spirit and scope of the present invention.

[0065] It should also be understood that one or more of the elements shown in the drawings may be implemented in a more separated or more integrated manner, or even removed because they cannot be operated in some cases or provided because they may be useful for a particular application.

[0066] In addition, unless otherwise clearly specified, any marked arrows in the drawings should be considered exemplary only and not restrictive. Moreover, unless otherwise specified, the term "or" as used herein generally intends to mean "and / or". In cases where the term is foreseen to be unclear due to the ability to provide separation or combination, the combination of components or steps will also be considered to have been specified.

[0067] As used in the description herein and throughout the claims below, unless otherwise specified, the singular forms "a", "an", and "the" include plural referents. Also, as used in the description herein and throughout the claims below, unless otherwise specified, the meaning of "in" includes "in" and "on".

[0068] The foregoing description of the exemplary embodiments of the invention (including the content in the abstract of the specification) is not intended to be exhaustive or to limit the invention to the precise forms disclosed herein. While specific embodiments of the invention and examples of the invention have been described herein for illustrative purposes only, various equivalent modifications will be apparent to and can be made by those skilled in the art within the spirit and scope of the invention. As noted, these modifications can be made to the invention in accordance with the foregoing description of the embodiments of the invention and such modifications would be within the spirit and scope of the invention.

[0069] The systems and methods have been described generally herein to facilitate an understanding of the details of the invention. Additionally, various specific details have been given to provide an overall understanding of embodiments of the invention. However, one of ordinary skill in the relevant art will recognize that embodiments of the invention may be practiced without one or more of the specific details, or with other devices, systems, components, methods, materials, parts, etc. In other instances, well-known structures, materials, and / or operations have not been shown or described in detail to avoid obscuring aspects of the embodiments of the invention.

Claims

1. A stator assembly, characterized in that, Comprising: A stator core; A conductor, including an inner conductor, an outer conductor and a bridging conductor, wherein an accommodation gap is formed by the cooperation of the inner conductor, the outer conductor and the outer end face of the stator core; Wherein, the bridging conductor includes an inner lead-out portion, a bridging portion and an outer lead-out portion, the bridging portion is disposed through the accommodation gap, and the inner lead-out portion is connected to the outer lead-out portion through the bridging portion.

2. The stator assembly according to claim 1, wherein, The bridging conductor further includes an inner avoidance portion and an outer avoidance portion, and the inner lead-out portion, the inner avoidance portion, the bridging portion, the layer avoidance portion and the outer lead-out portion are connected in sequence; wherein, the inner avoidance portion is bent along the radial direction so that the inner avoidance portion is misaligned with the inner conductor; the outer avoidance portion is bent along the radial direction so that the outer avoidance portion is misaligned with the outer conductor.

3. The stator assembly according to claim 1, wherein The bridging portion is a straight-line segment structure, the bridging portion is parallel to and does not contact the outer end face of the stator core, and the extension line of the bridging portion in the radial direction intersects the central axis of the stator core.

4. The stator assembly according to claim 1, wherein, The bridging portion has a plurality of avoidance segments, the heights of the plurality of avoidance segments in the axial direction are different from each other, and the extension line of the bridging portion in the radial direction intersects the central axis of the stator core.

5. The stator assembly according to claim 3, wherein The outer contour of the bridging portion in the axial direction is wavy.

6. The stator assembly according to claim 2, characterized in that, The inner avoidance portion includes a first left bending segment, a first left bevel straight segment, a first inner-outer bridging segment, a first right bevel straight segment and a first right bending segment connected in sequence, the first left bending segment is bent inward along the radial direction, the first right bending segment is bent outward along the radial direction, the free end of the first left bending segment is connected to the inner lead-out portion, and the free end of the first right bending segment is connected to the bridging portion.

7. The stator assembly according to claim 6, wherein The first inner-outer bridging segment includes a first segment and a second segment, the inclination direction of the first segment is opposite to that of the second segment, and the first segment and the second segment are arranged in a misaligned manner in the radial direction.

8. The stator assembly according to claim 2, characterized in that, The outer avoidance portion includes a second left bending segment, a second left bevel straight segment, a second inner-outer bridging segment, a second right bevel straight segment and a second right bending segment connected in sequence, the second left bending segment is bent inward along the radial direction, the second right bending segment is bent outward along the radial direction, the free end of the second left bending segment is connected to the bridging portion, and the free end of the second right bending segment is connected to the outer lead-out portion.

9. The stator assembly according to claim 8, wherein, The second inner-outer bridging segment includes a third segment and a fourth segment, the inclination direction of the third segment is opposite to that of the fourth segment, and the third segment and the fourth segment are arranged in a misaligned manner in the radial direction.

10. The stator assembly according to claim 1, wherein, The inner conductor and the outer conductor are respectively circumferential bridging conductors arranged in an array along the slot numbers of the stator core, and any one of the circumferential bridging conductors includes a conductor straight segment, a conductor bending segment and an out-of-slot straight segment, and the conductor bending segments, the out-of-slot straight segments of adjacent two circumferential bridging conductors and the outer end face of the stator core cooperate to form the accommodation gap.

11. The stator assembly according to claim 10, wherein, The number of the accommodating gaps is multiple, and the multiple accommodating gaps are arranged at equal intervals circumferentially. The number of the bridging conductors does not exactly correspond to the number of the accommodating gaps, and at least one of the accommodating gaps is penetrated by the bridging conductor.

12. A motor, characterized in that, It includes the stator assembly according to any one of claims 1-11.

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