Wire terminal, stator structure, electric machine, and vehicle

Abstract

The application relates to a wiring terminal, a stator structure, a motor and a vehicle. The wiring terminal comprises a terminal body, a plurality of wiring slots are arranged on the terminal body, the wiring slots are arranged through the terminal body along a thickness direction of the terminal body, the wiring slots extend to edges of the terminal body along an extension direction of the wiring slots, and the plurality of wiring slots are sequentially and spacedly arranged along a width direction of the wiring slots. The thickness direction of the terminal body, the extension direction of the wiring slots and the width direction of the wiring slots are three directions perpendicular to each other. The wiring terminal of the application solves the technical problem of poor connection reliability of the wiring terminal in the related art when the wiring terminal is connected with a wire.

Description

Technical Field

[0001] This application relates to the field of motor design technology, and in particular to a terminal block, stator structure, motor and vehicle. Background Technology

[0002] Terminal blocks are components used to make electrical connections between two parts of a structure. They are widely used in various fields such as industrial automation, electronics, and power.

[0003] For example, in the structure of a motor, terminals can be used to connect the motor stator winding to the external power supply components. However, the connection reliability of terminals in related technologies is poor when connected to wires, and poor contact is prone to occur.

[0004] It is evident that the terminal blocks in the relevant technologies have a technical problem of poor connection reliability when connected to wires, and no effective solution has yet been proposed to address this issue.

[0005] The information disclosed in the background section is only intended to enhance the understanding of the background art described herein. Therefore, the background art may contain information that would not be considered part of the prior art by those skilled in the art. Utility Model Content

[0006] This application provides a terminal block, a stator structure, a motor, and a vehicle to solve the technical problem of poor connection reliability of terminal blocks when connected to wires in related technologies.

[0007] To achieve the above objectives, according to a first aspect of this application, this application provides a terminal block, comprising: a terminal body, wherein the terminal body is provided with a plurality of wiring grooves, the wiring grooves are disposed through the terminal body along the thickness direction of the terminal body, the wiring grooves extend to the edge of the terminal body along the extension direction of the wiring grooves, and the plurality of wiring grooves are arranged sequentially at intervals along the width direction of the wiring grooves; wherein the thickness direction of the terminal body, the extension direction of the wiring grooves, and the width direction of the wiring grooves are three directions that are perpendicular to each other in pairs.

[0008] Optionally, the number of wiring slots is two; and / or, the wiring slot is a piercing slot, which allows the sidewall of the piercing slot to pierce the outer sheath of the enameled wire when the outer enameled wire enters the piercing slot and conduct electricity with the wire core.

[0009] Optionally, the wiring groove includes a first groove segment and a second groove segment, which are arranged sequentially along the extension direction of the wiring groove. The first groove segment and the second groove segment are connected. The second groove segment extends to the edge of the terminal body. Along the width direction of the wiring groove, the width of the second groove segment is greater than the width of the first groove segment. The difference between the width of the second groove segment and the width of the first groove segment is in the range of 0.05mm to 0.1mm.

[0010] Optionally, the wiring groove includes a transition groove section. Along the extension direction of the wiring groove, the transition groove section is located between the first groove section and the second groove section, and both the first groove section and the second groove section are connected to the transition groove section. The width of the transition groove section gradually increases along the direction from the first groove section to the second groove section.

[0011] Optionally, the opening of the wiring groove is provided with a first flared groove section, and the width of the first flared groove section gradually increases along the direction towards the outside of the wiring groove.

[0012] Optionally, the terminal body is provided with a connection mating part for electrical connection with an external connector; the connection mating part includes a groove structure for insertion mating with an external connector, and a protrusion is provided at least one inner sidewall of the groove structure along the width direction of the groove structure, the protrusion being elastically compressed under external force.

[0013] Optionally, the connecting mating part includes at least one of the following: a groove structure for inserting and mating with an external connector; a protrusion structure for inserting and mating with an external connector; and a fisheye terminal for inserting and mating with an external connector.

[0014] Optionally, the terminal body has an opening that extends through the terminal body along its thickness direction. The material on the terminal body located between the opening and the groove structure forms a protrusion that can elastically deform toward the opening under external force. At least a portion of the edge of the opening is arc-shaped.

[0015] Optionally, the edge of the opening near the groove structure is arc-shaped.

[0016] Optionally, the connecting mating part includes a groove structure for inserting and mating with an external connector. The groove structure has a second flared groove section at the opening, and the width of the second flared groove section gradually increases along the direction towards the outside of the groove structure.

[0017] Optionally, the terminal body is provided with an anti-detachment part, which is used to prevent the terminal body from falling off the insertion position.

[0018] Optionally, the anti-detachment part is a barbed structure, which is inclined towards the side of the groove opening away from the wiring groove along the extension direction of the wiring groove.

[0019] According to a second aspect of this application, a stator structure is also provided, comprising: a stator winding; and terminals, wherein the terminals are as described above, and the enameled wire of the stator winding passes through a plurality of terminal slots in the terminals, the inner wall of the terminal slot piercing the outer sheath of the enameled wire and conducting electricity with the wire core of the enameled wire.

[0020] Optionally, the difference between the diameter of the enameled wire and the width of the second slot of the terminal block is between 0.05 mm and 0.1 mm; and / or, the stator winding is a three-phase winding, the number of terminals is three, and the three terminals are connected to the three-phase winding in a delta configuration; wherein, the three-phase winding is formed by continuously winding a single enameled wire, and the portion of the enameled wire between two adjacent phase windings passes sequentially through multiple slots of the corresponding terminal block.

[0021] Optionally, the number of wiring slots on the terminal block is two, with the portion of the enameled wire located between two adjacent phase windings passing through one wiring slot radially outward along the stator structure and passing through the other wiring slot radially inward along the stator structure.

[0022] Optionally, the two ends of the enameled wire are connected to each other.

[0023] Optionally, the stator structure includes: a bracket having a mating portion, a terminal block being inserted into the mating portion, the mating portion sealing the opening of the wiring slot, wherein the stator structure satisfies at least one of the following: the mating portion includes: a body portion, at least a portion of which has a shape matching the shape of the terminal block for mating with the terminal block; a blocking portion protruding from the body portion; a first wire hanging slot and a second wire hanging slot, the first wire hanging slot and the second wire hanging slot being disposed in the body portion, the blocking portion being disposed between the first wire hanging slot and the second wire hanging slot, and the enameled wire being sequentially threaded through the slot. The first and second hanging slots correspond one-to-one with the positions of the two hanging slots on the terminal block when the terminal block is plugged into the mating part; the stator structure includes a stator core, and a bracket covers at least a portion of the stator core, the bracket being manufactured by injection molding; there are multiple mating parts and multiple terminals, and the multiple terminals are mated one-to-one with the multiple mating parts, wherein: the multiple mating parts are arranged sequentially along the circumference of the stator structure; and / or, at least two mating parts are unequal in distance from the central axis of the stator structure.

[0024] According to a third aspect of this application, an electric motor is also provided, the motor including the stator structure described above.

[0025] According to a fourth aspect of this application, a vehicle is also provided, the vehicle including the aforementioned motor.

[0026] The terminal block of this application includes a terminal body with multiple wiring grooves. The wiring grooves extend through the terminal body along its thickness direction and reach the edge of the terminal body along its extension direction. The multiple wiring grooves are spaced apart sequentially along their width direction. The thickness direction of the terminal body, the extension direction of the wiring grooves, and the width direction of the wiring grooves are three mutually perpendicular directions. This structural design allows for a tight arrangement of multiple wiring grooves on the terminal body. When connecting to external wires, the wire can be inserted into each wiring groove sequentially through its opening, ensuring contact between the wire and the groove walls. This effectively increases the contact area between the wire and the terminal block, significantly improving the reliability of the connection while maintaining a compact terminal block structure. This solves the technical problem of poor connection reliability in related technologies.

[0027] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0030] Figure 1 This is a schematic diagram of the structure of the wiring terminal according to an embodiment of this application;

[0031] Figure 2 yes Figure 1 Enlarged structural diagram of the central region;

[0032] Figure 3 This is a schematic diagram of the stator structure according to an embodiment of this application from a first-view perspective;

[0033] Figure 4 This is a schematic diagram of the stator structure of this application embodiment after the terminals and stator windings have been removed;

[0034] Figure 5 yes Figure 4 Enlarged structural diagram of the central region;

[0035] Figure 6 This is a schematic diagram of the stator structure according to an embodiment of this application from a second perspective;

[0036] Figure 7 This is a schematic diagram of the connection between the stator structure and the external connector (plug) in an embodiment of this application.

[0037] Explanation of reference numerals in the attached figures:

[0038] 1. Terminal body; 11. Wiring groove; 111. First groove segment; 112. Second groove segment; 113. Transition groove segment; 114. First flared groove segment; 12. Connecting mating part; 121. Protrusion; 122. Second flared groove segment; 13. Opening; 14. Anti-detachment part;

[0039] 10. Stator winding; 101. Enamelled wire; 102. Wire end;

[0040] 20. Terminal blocks;

[0041] 30. Bracket; 301. Plug-in mating part; 302. Main body; 303. Blocking part; 304. First cable hanging groove; 305. Second cable hanging groove;

[0042] 40. Insert. Detailed Implementation

[0043] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0044] The structure of this application will be described in detail below with reference to the accompanying drawings.

[0045] See Figures 1 to 7 As shown, according to an embodiment of this application, a terminal block is provided. The terminal block includes: a terminal body 1, on which a plurality of wiring grooves 11 are provided. Along the thickness direction of the terminal body 1, the wiring grooves 11 penetrate the terminal body 1. Along the extension direction of the wiring grooves 11, the wiring grooves 11 extend to the edge of the terminal body 1. Along the width direction of the wiring grooves 11, the plurality of wiring grooves 11 are arranged sequentially at intervals. The thickness direction of the terminal body 1, the extension direction of the wiring grooves 11, and the width direction of the wiring grooves 11 are three directions that are perpendicular to each other.

[0046] The terminal body 1 of this type of terminal block design features multiple wiring slots 11. These slots are spaced apart along their width, creating a tight arrangement. When connecting to external wires, the wire can be inserted into each slot 11 sequentially, ensuring contact between the wire and the slot walls. This effectively increases the contact area between the wire and the terminal block, enhancing the reliability of the connection while maintaining a compact structure. This solves the problem of poor connection reliability in related technologies.

[0047] In a preferred embodiment, there are two wiring slots 11, so that the wire can be passed out from one wiring slot 11 to one side and then passed into the other wiring slot 11 to the other side, thus ensuring that the wire before and after the connection is on the same side of the terminal block, which facilitates subsequent wire arrangement. Figure 3 and Figure 7 As shown, in this embodiment, the wiring groove 11 is a piercing groove. When the outer enameled wire 101 enters the piercing groove, the side wall of the piercing groove can pierce the outer sheath of the enameled wire 101 and conduct electricity with the wire core of the enameled wire 101. By piercing the enameled wire 101 and clamping it by using the inner wall of the wiring groove, the connection between the terminal and the enameled wire 101 is not only simplified, but also the reliability of the electrical connection between the terminal and the enameled wire 101 can be ensured by piercing the surface of the enameled wire 101 and connecting it with the wire core through two wiring grooves 11. In this context, piercing the outer sheath of the enameled wire 101 means that when the enameled wire 101 enters the wiring groove 11, the inner wall of the wiring groove 11 scrapes the enamel layer on the outer surface of the enameled wire 101, thereby exposing the internal wire core of the enameled wire 101, so that the wire core contacts the inner wall of the wiring groove 11 to achieve a conductive connection.

[0048] like Figure 1 and Figure 2 As shown, in this embodiment, the wiring groove 11 includes a first groove segment 111 and a second groove segment 112. The first groove segment 111 and the second groove segment 112 are arranged sequentially along the extension direction of the wiring groove 11. The first groove segment 111 and the second groove segment 112 are connected. The second groove segment 112 extends to the edge of the terminal body 1. Along the width direction of the wiring groove 11, the width of the second groove segment 112 is greater than the width of the first groove segment 111. With this segmented design, during use, when the enameled wire 101 enters the wiring groove 11 from the groove opening, the wider second groove segment 112 can pierce the outer sheath of the enameled wire 101, and then the narrower first groove segment 111 can clamp the core of the pierced enameled wire 101, thereby ensuring a reliable electrical connection between the terminal and the enameled wire 101.

[0049] In a preferred embodiment, the width difference between the second slot 112 and the first slot 111 ranges from 0.05mm to 0.1mm. That is, the second slot 112 is 0.05mm to 0.1mm wider than the first slot 111. This width difference design ensures that the core of the pierced enameled wire 101 can smoothly enter the first slot 111, and that the inner wall of the first slot 111 effectively clamps the core of the enameled wire 101, thereby ensuring the reliability of the electrical connection. This avoids situations where the pierced enameled wire 101 cannot easily enter the first slot 111 due to an excessively large width difference, and also avoids situations where the first slot 111 cannot effectively clamp the core of the enameled wire 101 due to an excessively small width difference, leading to an unreliable connection.

[0050] like Figure 1 and Figure 2 As shown, in this embodiment, the wiring groove 11 includes a transition groove section 113. Along the extension direction of the wiring groove 11, the transition groove section 113 is located between the first groove section 111 and the second groove section 112. Both the first groove section 111 and the second groove section 112 are connected to the transition groove section 113. The width of the transition groove section 113 gradually increases along the direction from the first groove section 111 to the second groove section 112. By designing the transition groove section 113, after the enameled wire 101 is pierced by the second groove section 112, it can enter the first groove section 111 more smoothly under the guidance of the transition groove section 113, thereby ensuring the smoothness of the connection process between the terminal and the enameled wire 101. The opening of the wiring groove 11 is provided with a first flared groove section 114, the width of which gradually increases along the direction towards the outside of the wiring groove 11. By designing the first flared groove section 114, when the enameled wire 101 enters the second groove section 112, the first flared groove section 114 can guide the enameled wire 101, so that the enameled wire 101 can enter the second groove section 112 more accurately and smoothly, so as to successfully pierce the outer sheath of the enameled wire 101.

[0051] Please refer to Figure 1 In some optional embodiments, the terminal body 1 is provided with a connecting mating part 12 for electrical connection with an external connector. That is, the function of the connecting mating part 12 is to electrically connect the terminal body 1 of the terminal block to the external connector. Therefore, in actual implementation, the specific form of the connecting mating part 12 can also change when the external connector is different, thereby ensuring a smooth electrical connection. Specifically, the external connector can take many forms, such as wires, inserts, slots, etc. Correspondingly, in order to achieve a smooth connection between the two, the specific form of the connecting mating part 12 can also be selected to adapt to the aforementioned external connector, such as slots, straight terminals, fisheye terminals, etc. Figure 7 As shown, in Figure 7In this embodiment, the external connector is a insert 40, and the connecting mating part 12 is a slot, with the insert 40 inserted into the slot to achieve electrical connection between the two. In this embodiment, the connecting mating part 12 includes at least one of the following: a groove structure for inserting and mating with the external connector; a protrusion structure for inserting and mating with the external connector; and a fisheye terminal for inserting and mating with the external connector.

[0052] like Figure 1 and Figure 2 As shown, in this embodiment, the connecting and mating part 12 includes a groove structure for insertion and mating with an external connector. Along the width direction of the groove structure, at least one inner sidewall of the groove structure is provided with a protrusion 121, which can be elastically compressed under external force. By designing the protrusion 121, when the external connector is inserted into the groove structure, it will press the protrusion 121 to the side, thereby compressing the protrusion 121. In this way, the protrusion 121 will continuously apply an elastic force to the external connector, improving the reliability of the insertion and mating between the two.

[0053] In actual implementation, the protrusion 121 can take many forms; for example, it can be integrally formed with the terminal body 1, or it can be a structure mounted on the terminal body 1. In this embodiment, such as... Figure 1 and Figure 2 As shown, the terminal body 1 has an opening 13. The opening 13 extends through the terminal body 1 along its thickness direction. A protrusion 121 is formed on the terminal body 1 between the opening 13 and the groove structure. The protrusion 121 can elastically deform towards the opening 13 under external force. Specifically, along the width direction of the groove structure, the groove structure may have the aforementioned opening 13 on one side or on both sides. Specifically, the opening 13 can be a closed hole, an open slot, a cut, etc., as long as it forms a structure that protrudes towards the groove structure and can elastically deform towards the opening 13.

[0054] To improve the elasticity of the protrusion 121, at least a portion of the edge of the opening 13 is arc-shaped. Preferably, the edge of the opening 13 near the groove structure is arc-shaped. By designing at least a portion of the edge of the opening 13 to be arc-shaped, the opening 13 can form an arch-like structure, thereby giving the protrusion 121 better deformability and further improving the reliability of the connection between the terminal block and the external connector.

[0055] like Figure 1As shown, in this embodiment, the connecting and mating part 12 includes a groove structure for insertion and mating with an external connector. The groove structure has a second flared groove section 122 at its opening, and the width of the second flared groove section 122 gradually increases along the direction towards the outside of the groove structure. By designing the second flared groove section 122, the external connector can be guided when inserted into the groove structure, thereby facilitating a smoother insertion and mating between the two.

[0056] like Figure 1 As shown, the terminal body 1 is provided with an anti-detachment part 14, which is used to prevent the terminal body 1 from falling off from the insertion position, thereby improving the reliability of the terminal body 1 installation. In this embodiment, the anti-detachment part 14 is a barb structure, which is inclined towards the side away from the groove opening of the wiring groove 11 along the extension direction of the wiring groove 11. Of course, in other embodiments, the anti-detachment part 14 can also be other structural forms, as long as it can reduce the risk of the terminal body 1 falling off at the installation position.

[0057] Furthermore, embodiments of this application also provide a stator structure, comprising: a stator winding 10; and terminals 20, wherein the terminals 20 are as described above. The enameled wire 101 of the stator winding 10 passes through multiple wiring slots 11 of the terminals 20, and the inner wall of the wiring slots 11 pierces the outer sheath of the enameled wire 101 and conducts electrically with the core of the enameled wire 101. In this stator structure, multiple wiring slots 11 are designed on the terminal body 1 of the terminals, and these slots 11 are arranged sequentially at intervals along the width direction of the slots 11, thereby achieving a close arrangement of the multiple wiring slots 11. The enameled wire 101 is inserted into multiple wiring slots 11 through the slot openings of each wiring slot 11, thereby making contact between the enameled wire 101 and the walls of multiple wiring slots 11. This effectively increases the contact area between the enameled wire 101 and the terminal block 20, increases the reliability of the connection between the terminal block and the enameled wire 101, and solves the technical problem of poor connection reliability when the terminal block 20 of the stator structure is connected to the enameled wire 101 in related technologies.

[0058] In a preferred embodiment, the difference between the diameter of the enameled wire 101 and the width of the second groove 112 of the terminal 20 ranges from 0.05 mm to 0.1 mm. This ensures that the enameled wire 101 enters the second groove 112 through its opening, and that the inner wall of the second groove 112 fully contacts and presses against the outer sheath of the enameled wire 101, puncturing the sheath under friction, thereby achieving a reliable electrical connection between the terminal 20 and the enameled wire 101.

[0059] Specifically, the stator winding 10 is a three-phase winding with three terminals 20. The three terminals 20 are connected to the three-phase winding in a delta configuration. The three-phase winding is formed by continuously winding a single enameled wire 101. The portion of the enameled wire 101 between adjacent phase windings passes sequentially through multiple slots 11 of the corresponding terminals 20. Thus, when wiring between adjacent windings, the enameled wire 101 can pass through the multiple slots 11 of the terminals 20 to achieve electrical connection with the terminals 20. This eliminates the need to cut the enameled wire 101 between adjacent windings; a single enameled wire 101 is sufficient to achieve the winding of the three-phase winding and the delta connection.

[0060] In a preferred embodiment, the terminal block 20 has two slots 11. The portion of the enameled wire 101 between two adjacent phase windings passes through one slot 11 radially outward along the stator structure and through the other slot 11 radially inward along the stator structure. This allows the enameled wire 101 to pass through both slots 11, achieving not only electrical connection with the terminal block 20 but also ensuring that the enameled wire 101 is on the same side of the terminal block 20 before and after connection, resulting in more orderly wiring of the enameled wire 101 between adjacent windings.

[0061] In this embodiment, as Figure 3 As shown, the two ends 102 of the enameled wire 101 are connected to each other. This makes the connection between the enameled wire 101 and the terminal 20 more stable, improving the reliability of the stator mechanism.

[0062] like Figures 4 to 7 As shown, the stator structure of this embodiment includes: a bracket 30, the bracket 30 having a plug-in mating part 301, a terminal 20 being inserted into the plug-in mating part 301, and the plug-in mating part 301 sealing the opening of the wiring slot 11. By designing the plug-in mating part 301 on the bracket 30, a more reliable installation position can be provided for the terminal 20, and when the terminal 20 is inserted into the plug-in mating part 301, the plug-in mating part 301 can seal the wiring slot 11 of the terminal 20, thereby stably wrapping the enameled wire 101 within the closed space formed by the two, improving the stability of the connection between the terminal 20 and the enameled wire 101.

[0063] To improve the reliability of the mating engagement between the mating part 301 and the terminal 20, the mating part 301 includes: a body part 302, at least a portion of which matches the shape of the terminal 20 for mating engagement. In addition, the mating part 301 further includes: a blocking part 303 protruding from the body part 302; a first wire-holding groove 304 and a second wire-holding groove 305, both disposed on the body part 302, with the blocking part 303 positioned between them. Enamelled wire 101 passes sequentially through the first wire-holding groove 304 and the second wire-holding groove 305. When the terminal 20 is mated with the mating part 301, the positions of the first wire-holding groove 304 and the second wire-holding groove 305 correspond one-to-one with the two wire slots 11 on the terminal 20. With this structural design, the plug-in mating part 301 can block the enameled wire 101 when the stator structure is wound, so that the enameled wire 101 can be more easily hooked into the first hanging groove 304 and the second hanging groove 305.

[0064] In this embodiment, the stator structure is an injection-molded stator. Specifically, the stator structure includes a stator core, and a bracket 30 covers at least a portion of the stator core. The bracket 30 is manufactured by injection molding, thereby facilitating the processing of the bracket 30 in the above-mentioned structure.

[0065] There are multiple mating parts 301 and multiple terminals 20. Each terminal 20 mates with one of the multiple mating parts 301. The multiple mating parts 301 are arranged sequentially along the circumference of the stator structure. Specifically, the specific arrangement of the mating parts 301 can be flexibly selected; for example, the multiple mating parts 301 can be spaced apart or adjacent to each other. In this embodiment, to reduce the space occupied by the mating parts 301 and make the stator structure more compact, at least two mating parts 301 are unequal in distance from the central axis of the stator structure.

[0066] In addition, embodiments of this application also provide an electric motor, which includes the stator structure described above.

[0067] Finally, embodiments of this application also provide a vehicle that includes the aforementioned motor.

[0068] Based on the above embodiments, it can be seen that the wiring terminals of this application embodiment have at least the following technical effects:

[0069] The terminal block of this application embodiment includes: a terminal body 1, on which a plurality of wiring grooves 11 are provided. The wiring grooves 11 penetrate the terminal body 1 along its thickness direction and extend to the edge of the terminal body 1 along its extension direction. The plurality of wiring grooves 11 are arranged alternately along their width direction. The thickness direction of the terminal body 1, the extension direction of the wiring grooves 11, and the width direction of the wiring grooves 11 are three mutually perpendicular directions. The terminal body 1 of this terminal block design has a plurality of wiring grooves 11, which are arranged alternately along their width direction, thereby achieving a close arrangement of the wiring grooves 11. When connecting to external wires, the wires can be sequentially inserted into multiple wiring slots 11 through the slot openings of each wiring slot 11, so that the wires are in contact with the slot walls of multiple wiring slots 11. This effectively increases the contact area between the wires and the terminals, and while ensuring that the terminal structure is compact, it effectively increases the reliability of its connection with the wires, thus solving the technical problem of poor connection reliability of terminals when connecting to wires in related technologies.

[0070] In the description of this application, 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 features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0071] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0072] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0073] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A terminal block, characterized in that, include: Terminal body (1), the terminal body (1) is provided with a plurality of wiring grooves (11), the wiring grooves (11) are provided through the terminal body (1) along the thickness direction of the terminal body (1), the wiring grooves (11) extend to the edge of the terminal body (1) along the extension direction of the wiring grooves (11), and the plurality of wiring grooves (11) are arranged at intervals in sequence along the width direction of the wiring grooves (11); The thickness direction of the terminal body (1), the extension direction of the wiring groove (11), and the width direction of the wiring groove (11) are three directions that are perpendicular to each other.

2. The terminal block according to claim 1, characterized in that, The number of the wiring grooves (11) is two; and / or, the wiring grooves (11) are piercing grooves, when the external enameled wire (101) enters the piercing groove, the sidewall of the piercing groove can pierce the outer sheath of the enameled wire (101) and conduct electricity with the wire core of the enameled wire (101).

3. The terminal block according to claim 1, characterized in that, The wiring groove (11) includes a first groove segment (111) and a second groove segment (112). The first groove segment (111) and the second groove segment (112) are arranged sequentially along the extension direction of the wiring groove (11). The first groove segment (111) and the second groove segment (112) are connected. The second groove segment (112) extends to the edge of the terminal body (1). Along the width direction of the wiring groove (11), the width of the second groove segment (112) is greater than the width of the first groove segment (111). The difference between the width of the second groove segment (112) and the width of the first groove segment (111) is in the range of 0.05 mm to 0.1 mm.

4. The terminal block according to any one of claims 1 to 3, characterized in that, The terminal body (1) is provided with a connection mating part (12) for electrical connection with an external connector; the connection mating part (12) includes a groove structure for insertion and mating with an external connector, and a protrusion (121) is provided at least one inner sidewall of the groove structure along the width direction of the groove structure, and the protrusion (121) can be elastically compressed under the action of external force.

5. The terminal block according to claim 4, characterized in that, The terminal body (1) is provided with an opening (13). Along the thickness direction of the terminal body (1), the opening (13) penetrates the terminal body (1). The material on the terminal body (1) located between the opening (13) and the groove structure forms the protrusion (121). The protrusion (121) can elastically deform toward the opening (13) under the action of external force. At least a portion of the edge of the opening (13) is arc-shaped.

6. A stator structure, characterized in that, The stator structure includes: Stator winding (10); The terminal block (20) is the terminal block according to any one of claims 1 to 5. The enameled wire (101) of the stator winding (10) is passed through a plurality of wiring slots (11) of the terminal block (20). The inner wall of the wiring slot (11) pierces the outer sheath of the enameled wire (101) and conducts electrical contact with the core of the enameled wire (101).

7. The stator structure according to claim 6, characterized in that, The terminal block (20) is the terminal block according to claim 3, wherein the difference between the diameter of the enameled wire (101) and the width of the second groove segment (112) of the terminal block (20) is in the range of 0.05 mm to 0.1 mm; and / or, The stator winding (10) is a three-phase winding, and the number of terminals (20) is three. The three terminals (20) are connected to the three-phase winding in a delta configuration. The three-phase winding is formed by continuously winding a single enameled wire (101). The portion of the enameled wire (101) between two adjacent phase windings passes through multiple slots (11) of the corresponding terminals (20) in sequence.

8. The stator structure according to claim 6, characterized in that, The stator structure includes a bracket (30) having a plug-in mating part (301), the wiring terminal (20) being inserted into the plug-in mating part (301), the plug-in mating part (301) sealing the opening of the wiring groove (11), wherein the stator structure satisfies at least one of the following: The insertion mating part (301) includes: a body part (302), at least a portion of which has a shape that matches the shape of the terminal block (20) for insertion mating with the terminal block (20); a blocking part (303) that protrudes from the body part (302); a first wire hanging groove (304) and a second wire hanging groove (305), which are disposed on the body part (302). 2) The blocking part (303) is disposed between the first hanging groove (304) and the second hanging groove (305). The enameled wire (101) is sequentially passed through the first hanging groove (304) and the second hanging groove (305). When the terminal (20) is inserted into the plug-in mating part (301), the positions of the first hanging groove (304) and the second hanging groove (305) correspond one-to-one with the two wiring grooves (11) on the terminal (20). The stator structure includes a stator core, and the bracket (30) covers at least a portion of the stator core. The bracket (30) is formed by injection molding. There are multiple plug-in mating parts (301) and multiple wiring terminals (20). The multiple wiring terminals (20) are matched one-to-one with the multiple plug-in mating parts (301). The multiple plug-in mating parts (301) are arranged sequentially along the circumference of the stator structure. The distances from at least two plug-in mating parts (301) to the central axis of the stator structure are not equal.

9. An electric motor, characterized in that, The motor includes the stator structure as described in any one of claims 6 to 8.

10. A vehicle, characterized in that, The vehicle includes the motor as described in claim 9.

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