A motor winding and a motor

Abstract

The utility model provides a kind of motor winding and motor, belong to motor technical field, including the wire part being contained in winding slot, wire part includes first connecting section and second connecting section, the butt joint end of first connecting section is connected with the butt joint end of second connecting section at connecting place, the end face of first connecting section butt joint end is provided with the first butt joint structure of outer convex, the end face of second connecting section butt joint end is provided with the second butt joint structure of inner concave, the first butt joint structure is gradually increased from the top of the first butt joint structure to the root of the first butt joint structure, the second butt joint structure is gradually reduced from the opening of the second butt joint structure to the bottom of the second butt joint structure. The utility model in first connecting section butt joint end and second connecting section butt joint end butt joint process, first butt joint structure and second butt joint structure can guide first connecting section butt joint end and second connecting section butt joint end, it is favorable to avoid butt joint misplacement, guarantee product quality.

Description

Technical Field

[0001] This application relates to the field of motor technology, specifically to a motor winding and a motor. Background Technology

[0002] With the continuous upgrading of electric vehicles, the interior space of the vehicle is becoming increasingly cramped. To ensure motor performance, the axial length requirement for the motor is becoming smaller and smaller. A motor typically includes a stator and a rotor that rotates relative to the stator. Windings are installed on the rotor or stator, and each winding usually consists of a conductor portion passing through a winding slot and an end portion located outside the winding slot. In related technologies, the end portions of the windings are usually connected by welding or other methods to achieve communication between the windings. However, the resulting connection structure is large, requiring significant space along the motor's axis, which is detrimental to further miniaturization. Therefore, in other related technologies, the windings are divided into two parts, connected within the winding slots, thus eliminating the need for connection through the end portions of the windings and saving axial space in the motor. When the windings are connected in the winding slots, their conductors need to be inserted into the winding slots of the rotor or stator. When the conductors of one part of the windings are inserted into the winding slots of the rotor or stator, they need to be connected with the conductors of another part of the windings in the winding slots. Due to the narrow space in the winding slots, it is difficult to connect the connecting ends of the conductors of the two parts of the windings, and they are prone to misalignment. This can lead to poor communication between the conductors of the two parts of the windings, which in turn affects the product quality. Utility Model Content

[0003] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a motor winding and a motor to solve the problem that the conductors of the two parts of the winding are easily misaligned when connected in the winding slot in the prior art.

[0004] To achieve the above and other related objectives, this utility model provides a motor winding, including a conductor portion housed in a winding slot. The conductor portion includes a first connecting segment and a second connecting segment. The mating end of the first connecting segment and the mating end of the second connecting segment are connected at a connection point. A first mating structure with an outward protrusion is provided on the end face of the mating end of the first connecting segment, and a second mating structure with an inward concave appearance is provided on the end face of the mating end of the second connecting segment. The first mating structure and the second mating structure fit together. The connection is located within the winding slot. The first docking structure gradually increases in size from the top to the root of the first docking structure, while the second docking structure gradually decreases in size from the opening to the bottom of the second docking structure.

[0005] Optionally, the first docking structure is a V-shaped protruding structure, and the second docking structure is a V-shaped groove structure; Alternatively, the first docking structure may be a W-shaped protruding structure, and the second docking structure may be a W-shaped groove structure.

[0006] Optionally, the winding has a plurality of said conductor portions, and the connection points of adjacent conductor portions are spaced apart in the extending direction of the conductor portions.

[0007] Optionally, a conductive adhesive layer is provided between the mating end of the first connecting segment and the mating end of the second connecting segment, and the mating end of the first connecting segment and the mating end of the second connecting segment are bonded and connected through the conductive adhesive layer.

[0008] Optionally, a covering structure is provided outside the conductor portion at the connection point, and the covering structure at least surrounds the conductor portion around its circumference.

[0009] Optionally, the covering structure is a covering layer attached to the outer surface of the conductor portion.

[0010] Optionally, the portion of the covering structure corresponding to the second connecting segment is connected to the second connecting segment, and the portion of the covering structure corresponding to the first connecting segment forms a cavity for holding conductive adhesive, the cavity having an opening for insertion of the first connecting segment.

[0011] Alternatively, the portion of the covering structure corresponding to the first connecting segment is connected to the first connecting segment, and the portion of the covering structure corresponding to the second connecting segment forms a cavity for holding conductive adhesive, the cavity having an opening for insertion of the second connecting segment.

[0012] Optionally, a limiting protrusion is provided on the side of the covering structure that mates with the docking end of the first connecting segment, and a limiting recess is provided on the docking end of the first connecting segment. The limiting protrusion and the limiting recess mate to constrain the relative position between the covering structure and the docking end of the first connecting segment in the extension direction of the conductor portion.

[0013] Optionally, there are multiple limiting protrusions and multiple limiting recesses, and each of the limiting protrusions and each of the limiting recesses is arranged sequentially along the extension direction of the guide portion.

[0014] This utility model also provides an electric motor, including the windings described in any of the preceding claims.

[0015] Optionally, the winding slots are disposed within the stator body or the rotor body.

[0016] As described above, the motor winding and motor provided by this utility model have at least the following beneficial effects: Since the first connecting segment has a convex first mating structure on its end face and the second connecting segment has a concave second mating structure on its end face, the first mating structure gradually increases in size from its top to its root, while the second mating structure gradually decreases in size from its opening to its bottom. Therefore, during the mating process of the first and second connecting segments, the first and second mating structures can guide the first and second connecting segments, ensuring a good mating and preventing misalignment during the mating process, thus guaranteeing product quality. Attached Figure Description

[0017] Figure 1 This is shown as one of the cross-sectional structural schematic diagrams of the winding conductor portion at the connection point in an embodiment of this utility model; Figure 2 The second schematic diagram shows a cross-sectional view of the winding conductor portion at the connection point in an embodiment of this utility model. Figure 3 The diagram shown is a structural schematic of the winding in the winding slot according to an embodiment of the present invention. Figure 4 The diagram shows the structure of the first connecting segment docking end and the second connecting segment docking end in an embodiment of this utility model.

[0018] Explanation of reference numerals in the attached figures: 1-First connecting section; 2-Second connecting section; 3-Conductive adhesive layer; 4-Covering structure; 5-Clamp; 6-Annular mounting groove; 7-Limiting protrusion; 8-Limiting recess; 9-Winding groove; 10-Stator body. Detailed Implementation

[0019] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0020] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the illustrations only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the shape, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0021] Numerous details are explored in the following description to provide a more thorough explanation of embodiments of the present disclosure. However, it will be apparent to those skilled in the art that embodiments of the present disclosure may be practiced without these specific details. In other embodiments, well-known structures and devices are shown in block diagram form rather than in detail to avoid obscuring embodiments of the present disclosure.

[0022] Please see Figures 1-4 This embodiment provides a motor winding, including a conductor portion housed in a winding slot. The conductor portion includes a first connecting segment and a second connecting segment. The mating end of the first connecting segment and the mating end of the second connecting segment are connected at the connection point. The end face of the mating end of the first connecting segment 1 is provided with an outwardly protruding first mating structure, and the end face of the mating end of the second connecting segment is provided with an inwardly concave second mating structure. The first mating structure of the first connecting segment and the second mating structure of the second connecting segment fit together. like Figure 1 As shown, the connection is located in the winding slot, which can be set on the stator body or rotor body of the motor.

[0023] From the top to the root of the first mating structure, the first mating structure gradually increases in size, while the second mating structure gradually decreases in size from its opening to its bottom. When the first connecting segment and the second connecting segment are mated, the first mating structure of the first connecting segment 1 extends into the second mating structure of the second connecting segment 2. Because the first mating structure gradually increases in size from its top to its root, and the second mating structure gradually decreases in size from its opening to its bottom, the first and second mating structures provide good guidance during mating, ensuring proper alignment of the mating ends of the first and second connecting segments. This helps prevent misalignment during the mating process. Simultaneously, the first and second mating structures increase the contact area between the first connecting segment 1 and the second connecting segment 2, which improves the connection strength and conductivity of the conductor at the connection point, thereby enhancing product reliability.

[0024] like Figure 2 and Figure 3As shown, in some specific embodiments, both the first and second docking structures are V-shaped structures. The first docking structure is a V-shaped protruding structure, and the second docking structure is a V-shaped groove structure. A V-shaped protruding structure refers to a protruding structure whose longitudinal cross-section is V-shaped, and a V-shaped groove structure refers to a groove structure whose longitudinal cross-section is V-shaped. The longitudinal cross-section refers to the cross-section of the groove structure or protruding structure extending along the length of the guide portion. The protruding structure and the groove structure dock with each other, which helps to avoid misalignment when the first connecting segment and the second connecting segment are docked. For example... Figure 2 As shown, in some embodiments, the first connecting segment 1 may be disposed above the second connecting segment 2. For example... Figure 3 As shown, in some embodiments, the second connecting segment 2 may be disposed above the first connecting segment 1. In other specific embodiments, the first mating structure is a W-shaped protruding structure, and the second mating structure is a W-shaped groove structure.

[0025] Specifically, in one optional embodiment of this example, the mating end of the first connecting segment 1 can be a convex cone shape, and the mating end of the second connecting segment 2 can be a concave cone shape. In another optional embodiment of this example, the mating end of the first connecting segment 1 can be a convex polygonal cone shape, and the mating end of the second connecting segment 2 can be a concave polygonal cone shape.

[0026] In this embodiment, the mating end of the first connecting segment 1 is a protruding triangular prism, and the mating end of the second connecting segment 2 is a concave triangular prism, with the length direction of the triangular prism perpendicular to the length direction of the conductor portion. The triangular prism structure is simple, easy to process, and suitable for large-scale industrial production applications.

[0027] like Figure 2 and Figure 3 As shown, in this embodiment, a conductive adhesive layer 3 is provided between the mating ends of the first connecting segment 1 and the second connecting segment 2. The mating ends of the first connecting segment 1 and the second connecting segment 2 are bonded and connected through the conductive adhesive layer 3. The conductive adhesive layer 3 is formed by mixing adhesive and conductive material and filling it between the mating ends of the first connecting segment 1 and the second connecting segment 2. The conductive material provides conductivity, and the adhesive provides bonding. The conductive adhesive layer 3 fills the gap between the mating ends of the first connecting segment 1 and the second connecting segment 2, ensuring a good connection and conductivity between them, which helps to avoid poor contact between the mating ends of the first connecting segment 1 and the second connecting segment 2.

[0028] In practice, after the mating ends of the first connecting segment 1 and the second connecting segment 2 are joined, conductive adhesive can be injected between them. After the conductive adhesive cures, a conductive adhesive layer 3 is formed to connect the first connecting segment 1 and the second connecting segment 2. Alternatively, conductive adhesive can be applied to the mating end of either the first connecting segment 1 or the second connecting segment 2 first, and then the mating ends of the first connecting segment 1 and the second connecting segment 2 are joined. This method is simple and convenient.

[0029] In some specific optional embodiments, at least one of the first connecting segment 1 and the second connecting segment 2 is provided with a highly conductive auxiliary coating such as graphene on the end face of the mating end. Graphene has good conductivity, which is conducive to the conduction between the first connecting segment 1, the second connecting segment 2 and the conductive adhesive layer 3, thereby improving the conductivity between the first connecting segment 1 and the second connecting segment 2.

[0030] In this embodiment, a covering structure 4 is provided at the external connection of the conductor portion, and the covering structure 4 at least surrounds the conductor portion. The covering structure 4 provides protection and constraint to the connection, increasing the strength and reliability of the connection. In a specific embodiment of this invention, the covering structure 4 is a covering layer attached to the outer surface of the conductor portion. The covering layer is made of insulating material and surrounds the connection between the first connecting segment 1 and the second connecting segment 2. The covering layer provides insulation to prevent accidental continuity between the conductor segment and adjacent conductor segments.

[0031] In one specific embodiment of this example, annular mounting grooves 6 are respectively provided on the docking ends of the first connecting segment 1 and the second connecting segment 2. The two annular mounting grooves 6 are respectively arranged around the docking ends of the first connecting segment 1 and the second connecting segment 2. The two annular mounting grooves 6 are docked to form a recessed structure. The covering structure 4 is accommodated and disposed in the recessed structure formed by the two annular mounting grooves 6. The annular mounting grooves 6 limit the covering structure 4 in the length direction of the conductor portion, which helps to prevent the covering structure 4 from moving.

[0032] like Figure 3 As shown, in a specific embodiment of this example, the portion of the covering structure 4 corresponding to the first connecting segment 1 is connected to the first connecting segment 1, and the portion of the covering structure 4 corresponding to the second connecting segment 2 forms a cavity for holding conductive adhesive. The cavity has an opening for the second connecting segment 2 to be inserted, and the mating end of the second connecting segment 2 extends into the cavity through the opening to complete the mating with the first connecting segment 1.

[0033] like Figure 2As shown, in another specific embodiment of this example, the portion of the covering structure 4 corresponding to the second connecting segment 2 is connected to the second connecting segment 2, and the portion of the covering structure 4 corresponding to the first connecting segment 1 forms a cavity for holding conductive adhesive. The cavity has an opening for inserting the first connecting segment 1, and the mating end of the first connecting segment 1 extends into the cavity through the opening to complete the mating with the second connecting segment 2. When the first connecting segment 1 and the second connecting segment 2 are mated, the conductive adhesive can be injected into the cavity formed by the covering structure 4 first. The covering structure 4 can constrain the conductive adhesive, which helps to prevent the conductive adhesive from overflowing between the first connecting segment 1 and the second connecting segment 2. The groove structure on the second connecting segment 2 helps to increase the capacity of the cavity, which further helps to prevent the conductive adhesive from overflowing. Figure 2 As shown, in this embodiment, the second connecting segment 2 is located below the first connecting segment 1 so that the cavity can better hold the conductive adhesive, which helps to prevent the conductive adhesive from flowing out of the cavity opening.

[0034] like Figure 2 and Figure 3 As shown, in this embodiment, a clamp 5 is provided on the outside of the covering structure 4. The clamp 5 is provided corresponding to the docking end of the first connecting segment 1 or the second connecting segment 2. The clamp 5 can constrain the covering structure 4 on the docking end of the first connecting segment 1 or the second connecting segment 2, which helps to prevent the covering structure 4 from sliding on the conductor.

[0035] In this embodiment, the covering structure 4 is a cylindrical structure, and its end is fitted onto the mating end of the first connecting segment 1 or the mating end of the second connecting segment 2. Anti-slip textures can be provided inside the end of the covering structure 4 along the length of the conductor portion to help prevent accidental sliding of the covering structure 4 on the conductor portion. In this example, anti-slip textures can also be provided on the mating end of the first connecting segment 1 or the mating end of the second connecting segment 2 to prevent accidental sliding between the covering structure 4 and the guide portion.

[0036] Specifically, such as Figures 2-4 As shown, in this embodiment, a limiting protrusion 7 is provided on the side of the covering structure 4 that mates with the mating end of the first connecting segment 1, and a limiting recess 8 is provided on the mating end of the first connecting segment 1. The limiting protrusion 7 and the limiting recess 8 cooperate to constrain the relative position between the covering structure 4 and the mating end of the first connecting segment 1 in the extending direction of the conductor portion, which helps to prevent the mating end of the first connecting segment 1 from slipping out of the covering structure 4. A limiting protrusion 7 can also be provided on the side of the covering structure 4 that mates with the mating end of the second connecting segment 2, and a limiting recess 8 can also be provided on the mating end of the second connecting segment 2 to constrain the relative position between the covering structure 4 and the mating end of the second connecting segment 2 in the extending direction of the conductor portion, thereby helping to prevent the mating end of the second connecting segment 2 from slipping out of the covering structure 4. The limiting protrusion 7 can be annular or multiple, to improve the limiting effect.

[0037] In this embodiment, there are multiple limiting protrusions 7 and limiting recesses 8. Each limiting protrusion 7 and each limiting recess 8 is arranged sequentially along the extension direction of the guide portion to increase the constraint between the guide portion and the covering structure 4 in the length direction of the guide portion. In this embodiment, the limiting protrusions 7 and limiting recesses 8 can be arranged in a one-to-one correspondence to reduce the amount of machining required for the parts.

[0038] In this embodiment, the motor winding has multiple conductor sections, and there is a gap between the connection points of adjacent conductor sections in the extension direction of the conductor section. That is, the connection points of any two adjacent conductor sections are staggered to avoid contact and conduction between two adjacent conductor sections, thereby improving the reliability of the product.

[0039] This embodiment also provides an electric motor, including a housing, a rotor, and a stator, as well as the aforementioned windings. The rotor includes a rotor body, and the stator includes a stator body. The windings can be stator windings or rotor windings; that is, the windings can be disposed in the winding slots of the stator body or in the winding slots of the rotor body. Figure 1 As shown, in this embodiment, the winding is a stator winding, which is installed in the winding slot 9 of the stator body 10.

[0040] In summary, the motor winding and motor provided in this embodiment have a first convex abutment structure on the end face of the first connecting end. The first abutment structure gradually increases in size from its top to its root, while the second abutment structure gradually decreases in size from its opening to its bottom. Therefore, during the abutment process between the first and second connecting ends, the first and second abutment structures guide each other, ensuring a good abutment and preventing misalignment during the abutment process, thus guaranteeing product quality.

[0041] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A motor winding, characterized in that, The device includes a conductor portion housed within a winding slot. The conductor portion includes a first connecting segment and a second connecting segment. The mating end of the first connecting segment and the mating end of the second connecting segment are connected at a connection point. A first mating structure with an outward protrusion is provided on the end face of the mating end of the first connecting segment, and a second mating structure with an inward concave appearance is provided on the end face of the mating end of the second connecting segment. The first mating structure and the second mating structure fit together. The connection is located within the winding slot. The first docking structure gradually increases in size from the top to the root of the first docking structure, while the second docking structure gradually decreases in size from the opening to the bottom of the second docking structure.

2. The motor winding according to claim 1, characterized in that: The first docking structure is a V-shaped protruding structure, and the second docking structure is a V-shaped groove structure; Alternatively, the first docking structure may be a W-shaped protruding structure, and the second docking structure may be a W-shaped groove structure.

3. A motor winding according to claim 1, characterized in that: The winding has a plurality of said conductor portions, and the connection points of adjacent conductor portions are spaced apart in the extending direction of the conductor portions.

4. A motor winding according to claim 1, characterized in that: A conductive adhesive layer is provided between the mating end of the first connecting segment and the mating end of the second connecting segment, and the mating end of the first connecting segment and the mating end of the second connecting segment are bonded and connected through the conductive adhesive layer.

5. A motor winding according to claim 1, characterized in that: The conductor portion is provided with a covering structure at the connection point, and the covering structure surrounds the conductor portion at least once.

6. A motor winding according to claim 5, characterized in that: The covering structure is a covering layer that is attached to the outer surface of the conductor portion.

7. A motor winding according to claim 5, characterized in that: The portion of the covering structure corresponding to the second connecting segment is connected to the second connecting segment, and the portion of the covering structure corresponding to the first connecting segment forms a cavity for holding conductive adhesive, the cavity having an opening for insertion of the first connecting segment; Alternatively, the portion of the covering structure corresponding to the first connecting segment is connected to the first connecting segment, and the portion of the covering structure corresponding to the second connecting segment forms a cavity for holding conductive adhesive, the cavity having an opening for insertion of the second connecting segment.

8. A motor winding according to claim 5, characterized in that: A limiting protrusion is provided on the side of the covering structure that mates with the docking end of the first connecting segment, and a limiting recess is provided on the docking end of the first connecting segment. The limiting protrusion and the limiting recess mate to constrain the relative position between the covering structure and the docking end of the first connecting segment in the extension direction of the conductor portion.

9. A motor winding according to claim 8, characterized in that: There are multiple limiting protrusions and multiple limiting recesses, and each of the limiting protrusions and each of the limiting recesses is arranged sequentially along the extension direction of the guide portion.

10. An electric motor, characterized in that, Includes the winding as described in any one of claims 1-9.

11. The motor according to claim 10, characterized in that, The winding slots are located within the stator body or rotor body.

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