Busbar, end wiring structure, motor stator and motor

Abstract

The utility model discloses a busbar, end portion wiring structure, motor stator and motor relates to motor technical field, wherein, busbar, include: busbar body, a plurality of terminal, with busbar body opposite fixed and conductive, and its length direction is perpendicular to the length direction of busbar body, and the height where terminal is located is higher than the height where busbar body is located, this busbar, end portion wiring structure, motor stator and motor, through setting higher than the terminal of busbar body, when the concentric arrangement of multiple busbars, terminal can cross over the other busbar body of adjacent and corresponding wiring terminal conductive, and then avoid the interference of busbar of different phase and wiring terminal each other, help to reduce the arrangement interval of busbar, and then reduce the end portion space occupation of motor stator.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and more specifically, to a busbar, an end wiring structure, a motor stator, and a motor. Background Technology

[0002] A motor stator typically includes a stator support and multiple sets of coil assemblies on its outer periphery. The coil assembly includes a coil support and windings. The phase wire ends of the windings (such as flat wires or round wires) of the multiple sets of coil assemblies need to be connected through terminal blocks to form a phase wire interface.

[0003] The existing motor stators have the following technical problems:

[0004] After the copper wire is wound around the stator winding, the copper wire terminals still need to be manually wound around the stator winding by workers, and finally the terminals are fixed on the stator winding.

[0005] In practical applications, since the motor stator typically includes multiple coil windings, there are multiple phase wire terminals that need to be connected separately. In order to keep the stator ends neat, multiple concentric busbars are usually used to weld the terminals together. However, during the welding of the terminals, there is still the problem of cross-interference between the terminals of different phases and the busbars, which is not conducive to the mutual insulation between different phases. Therefore, it is necessary to increase the spacing between the busbars of different phases, which increases the space occupied at the end of the motor stator and thus affects the axial dimension of the motor.

[0006] In summary, how to solve the problem of mutual interference between the terminals and busbars of different phases when wiring the stator end of a motor is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0007] In view of this, the purpose of this utility model is to provide a bus that, by setting terminals higher than the bus body, allows the terminals to pass over adjacent bus bodies and make connection with the corresponding terminals when multiple bus bodies are arranged concentrically, thereby avoiding interference between different phase bus bodies and terminals, helping to reduce the arrangement spacing of bus bodies, and thus reducing the space occupied at the end of the motor stator.

[0008] The second objective of this invention is to provide an end wiring structure including the aforementioned busbars, which can fix multiple busbars one by one, so that the multiple busbars maintain a stable relative position relationship and avoid mutual contact and conduction.

[0009] The third objective of this utility model is to provide a motor stator that includes the above-mentioned end wiring structure, has the same technical features, and can solve the same technical problems.

[0010] The fourth objective of this utility model is to provide a motor including the above-mentioned motor stator, which has the same technical features and can solve the same technical problems.

[0011] To achieve the above objectives, this utility model provides the following technical solution:

[0012] A busbar for forming a busbar assembly, the busbar assembly being used to conduct the terminals of the inner coil windings of a motor stator;

[0013] The bus includes:

[0014] Busbar body;

[0015] Several terminals are fixed relative to and connected to the bus body, and their length direction is perpendicular to the length direction of the bus body, and the height of the terminals is higher than the height of the bus body.

[0016] Preferably, the busbar body includes several integrally formed raised sections, and the height of the raised sections is higher than the height of other areas of the busbar body.

[0017] The terminal is fixed relative to and connected to the raised section.

[0018] Preferably, the terminal includes an integrally formed bent section and a return section, and the bent section and the return section form a receiving groove with a single-end opening for fixing and conducting the wiring terminal;

[0019] Alternatively, the terminal may include a bent section for connection of the wiring terminal.

[0020] Preferably, the terminal is integrally formed with the bus body;

[0021] Alternatively, the terminal may further include an attachment section, which is fixed relative to and connected to the bending section and / or the return bend section, and the attachment section is in contact with and connected to the busbar body.

[0022] An end wiring structure for connecting and conducting the internal wiring terminals of a motor stator;

[0023] The end wiring structure includes:

[0024] Several buses as described in any of the above;

[0025] A cable management box includes connectors and several cable slots. The connectors are used to fix the cable windings of the motor stator and / or the stator support assembly, and the cable slots are used to fix the busbar.

[0026] The opening height of the cable tray is not higher than the height of the terminal of the busbar located within the cable tray.

[0027] Preferably, the connector includes a plurality of discontinuous bases for increasing the gap between the cable management box and the coil winding and / or the stator support assembly;

[0028] The base of the foot is fixedly connected to the cable management box, and the top of the foot is used to be fixedly connected to the coil winding and / or the stator support assembly.

[0029] Preferably, the cable management box further includes several hollow holes and / or peripheral wall notches;

[0030] The hollow hole is connected to at least one of the wire grooves;

[0031] The notch in the peripheral wall connects to the cable groove near the peripheral wall of the cable box.

[0032] Preferably, the side wall of the wire trough is provided with a positioning notch, and a phase wire terminal that is in communication with the wire trough is fixedly disposed in the positioning notch.

[0033] An electric motor stator includes the end wiring structure described in any one of the above descriptions.

[0034] An electric motor, comprising the motor stator described above.

[0035] The busbar provided by this utility model has at least the following advantages compared with the prior art:

[0036] 1. The terminals are positioned higher than the busbar body, so that when multiple busbars are arranged in parallel or concentrically, the higher terminals can pass over the adjacent lower busbar body, avoiding contact between the terminals of adjacent busbars and the busbar body. This allows multiple busbars to be arranged on the same plane and reduces the spacing between multiple busbars, thereby reducing the space occupied at the motor stator shaft end and helping to reduce the axial dimension of the motor.

[0037] 2. The length direction of the terminal is perpendicular to the length direction of the busbar body. That is, when multiple buses are arranged in parallel or concentrically, the conduction points of multiple buses can be extended to one side of the whole through the terminal, which facilitates the soldering of the coil winding terminals.

[0038] The end wiring structure provided by this utility model includes the bus described above and has the same beneficial effects.

[0039] The motor stator provided by this utility model includes the aforementioned end wiring structure and has the same beneficial effects.

[0040] The motor provided by this utility model includes the motor stator described above and has the same beneficial effects. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0042] Figure 1 This is a schematic diagram of the structure of a specific motor stator embodiment provided by this utility model;

[0043] Figure 2 Provided by this utility model Figure 1 A bottom view;

[0044] Figure 3 This is a schematic diagram of a specific embodiment of the end wiring structure provided by this utility model;

[0045] Figure 4 Provided by this utility model Figure 3 Exploded view of the parts;

[0046] Figure 5 This is a schematic diagram of the structure of a specific busbar assembly embodiment provided by this utility model;

[0047] Figure 6 Provided by this utility model Figure 1 Side view;

[0048] Figure 7 This is a schematic diagram of the structure of the second embodiment of the motor stator provided by this utility model;

[0049] Figure 8 An exploded view of the parts in Embodiment 2 of the specific end wiring structure provided by this utility model;

[0050] Figure 9 This is a schematic diagram of the structure of a specific busbar assembly embodiment two provided by this utility model;

[0051] Figure 10 This is a schematic diagram of the structure of a specific motor stator embodiment three provided by this utility model.

[0052] In the picture:

[0053] 1. Cable management box; 11. Base; 12. Peripheral wall notch; 13. Positioning notch; 14. Hole; 15. Positioning groove;

[0054] 2. Busbar assembly; 21. Terminal block; 211. Raised section; 212. Bend section; 213. Return bend section; 214. Receiving groove; 215. Attachment section; 22. Phase wire terminal;

[0055] 3. Stator support assembly;

[0056] 4. Coil winding; 41. Phase wire terminal; 42. Conductor terminal;

[0057] 5. Conductor components. Detailed Implementation

[0058] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0059] The core of this utility model is to provide a busbar. By setting terminals higher than the busbar body, when multiple busbars are arranged concentrically, the terminals can pass over the adjacent busbar bodies and make contact with the corresponding terminals, thereby avoiding interference between different phase busbars and terminals. This helps to reduce the arrangement spacing of busbars and thus reduce the space occupied at the end of the motor stator.

[0060] The second core of this utility model is to provide an end wiring structure including the above-mentioned busbars, which can fix multiple busbars one by one, so that the multiple busbars maintain a stable relative position relationship and avoid mutual contact and conduction.

[0061] The third core of this utility model is to provide a motor stator including the above-mentioned end wiring structure, which has the same technical features and can solve the same technical problems.

[0062] The fourth core of this utility model is to provide a motor including the above-mentioned motor stator, which has the same technical features and can solve the same technical problems.

[0063] Please refer to Figure 5 and Figure 9 A busbar for forming a busbar assembly 2, which is used to conduct the wiring terminals of the inner coil winding 4 of the motor stator.

[0064] Buses, including:

[0065] Busbar body;

[0066] Several terminals are fixed and connected relative to the bus body, and their length direction is perpendicular to the length direction of the bus body, and the height of the terminals is higher than the height of the bus body.

[0067] like Figure 5 and Figure 9 As shown, the bus assembly 2 typically includes several parallel or concentrically arranged busbars, and several terminals are provided on the busbars for wiring. All terminals in the bus assembly 2 are arranged in a ring array, which facilitates shortening the reserved welding length of the wiring terminals of the coil winding 4 in the motor stator.

[0068] Meanwhile, the length direction of the terminal is perpendicular to the length direction of the bus body, so the connection point of the bus for connecting with the terminal can be extended to one side of the bus assembly 2 through the terminal, which facilitates the welding of the terminal of the coil winding 4, and avoids the terminal and the bus body from contacting and interfering with each other.

[0069] Moreover, the height of the terminals is higher than that of the busbar body, so that when multiple buses are arranged in parallel or concentric and on the same plane, the terminals at the higher position can pass over the busbar body at the lower position, thereby avoiding contact between terminals of different phases and the busbar body, which helps to reduce the arrangement gap between adjacent buses, that is, reduce the space occupied at the end of the motor stator shaft.

[0070] In some embodiments, the busbar body includes a plurality of integrally formed raised sections 211, the height of which is higher than the height of other areas of the busbar body.

[0071] The terminal is fixed relative to and connected to the raised section 211.

[0072] like Figure 5 and Figure 9 As shown, a portion of the busbar body is tilted upward or protruded upward to form a raised section 211. The terminal is fixed and connected to the raised section 211, which ensures that the height of the terminal is higher than the height of the busbar body.

[0073] In some embodiments, a downward bending area is provided at the terminal, and the bending area is fixedly connected to the busbar, which can also achieve the same result that the height of the terminal is higher than the height of the busbar body.

[0074] In some embodiments, the terminal includes an integrally formed bent section 212 and a return section 213, which together form a receiving groove 214 with a single-end opening for fixing and conducting the wiring terminal.

[0075] Alternatively, the terminal may include a bent section 212 for connection of the wiring terminal.

[0076] like Figure 5 and Figure 9 As shown, a single-end open receiving groove 214 is formed by combining the bending section 212 and the return section 213, which facilitates the initial fixing of the wiring terminal before welding and facilitates subsequent welding operations.

[0077] In some embodiments, the terminal only includes the bent section 212, and the wiring terminal is directly welded to the bent section 212, which can also achieve the purpose of connecting the wiring terminal to the bus.

[0078] In some embodiments, the terminal is integrally formed with the bus body;

[0079] Alternatively, the terminal may also include an attachment section 215, which is fixed and connected to the bending section 212 and / or the return section 213, and the attachment section 215 is in contact with the bus body.

[0080] like Figure 5 As shown, the terminal is integrally formed with the bus body. The bending section 212, the return bending section 213 and the raised section 211 are all formed by bending the bus body. The bus has a high degree of integrity and can be formed in one step by a bending machine without the need for subsequent assembly.

[0081] In some embodiments, such as Figure 9 As shown, the terminal and the bus body are not integrally formed. That is, the terminal has an attachment section 215. The attachment section 215 and the raised section 211 are in contact and conduction. The attachment section 215 and the raised section 211 are fixed by welding to ensure the relative position stability of the terminal and the bus body.

[0082] In the embodiment where the terminal and busbar are integrally formed, the return bend 213 of the terminal at the end of the busbar body can be omitted, while the return bend 213 of the terminal in the middle needs to be retained, thereby reducing the number of bends during the processing of the terminal at the end and thus improving the processing speed of the busbar.

[0083] In practical implementation, the busbar adopts a flat wire structure to increase the welding contact area between the terminals and the wiring terminals. In some embodiments, such as... Figure 10 As shown, the bus adopts a circular structure, which can also achieve the above functions.

[0084] In addition to the buses disclosed in the above embodiments, such as Figure 3 , Figure 4 , Figure 6 and Figure 8 As shown, this utility model also provides an end wiring structure for connecting and conducting the wiring terminals inside the motor stator;

[0085] End wiring structure, including:

[0086] Several buses containing any of the above items;

[0087] The cable management box 1 includes a connector and several cable slots. The connector is used to fix the connection with the coil winding 4 of the motor stator and / or the stator support assembly 3. The cable slots are used to fix the busbar.

[0088] The opening height of the cable tray shall not be higher than the height of the terminal of the busbar located inside the cable tray.

[0089] like Figure 3 , Figure 4 , Figure 6 and Figure 8 As shown, by setting up the cable management box 1, multiple busbars are fixed, so that the relative positions of the multiple busbars are fixed. The height of the opening of the cable management box 1 is lower than the height of the terminals of the busbars inside it. Therefore, when the busbars are assembled, the terminals can pass over the adjacent cable grooves and the busbars inside them, extending the conduction points of all busbars to one side of the cable management box 1, which facilitates the wiring operation of the terminals.

[0090] In some embodiments, the connector includes a plurality of discontinuous bases 11 for increasing the gap between the cable management box 1 and the coil winding 4 and / or the stator support assembly 3;

[0091] The base of the base 11 is fixedly connected to the cable management box 1, and the top of the base 11 is used to be fixedly connected to the coil winding 4 and / or the stator support assembly 3.

[0092] like Figure 1 and Figure 3 As shown, the wire management box 1 is a ring structure, and the outer diameter of the wire management box 1 is similar to the rotational outer diameter of the coil winding 4 of the motor stator. Therefore, the wire management box 1 and the coil winding 4 have at least partial overlap along the axial projection of the motor stator, which helps to shorten the reserved length of the wiring terminal of the coil winding 4.

[0093] Meanwhile, by setting base feet 11 at the bottom of the cable management box 1, the distance between the cable management box 1 and the coil winding 4 is increased, which facilitates heat dissipation for both. At the same time, the discontinuous nature of the multiple base feet 11 helps to improve the ventilation capacity of the gap between the cable management box 1 and the coil winding 4, further enhancing the heat dissipation effect.

[0094] In some embodiments, the cable management box 1 further includes a plurality of hollow holes 14 and / or peripheral wall notches 12;

[0095] The perforated hole 14 connects to at least one wire groove;

[0096] The notch 12 on the perimeter wall connects to the cable tray near the perimeter wall of the cable management box 1.

[0097] like Figure 5 and Figure 9 As shown, the bottom of the cable management box 1 is provided with a hollow hole 14 to conduct the cable groove, which helps to dissipate heat from the busbar in the cable groove and also plays a role in weight reduction.

[0098] Furthermore, a peripheral wall notch 12 is provided on the peripheral wall of the cable management box 1 to connect to the adjacent peripheral wall cable groove, thereby allowing the busbars located in the adjacent peripheral wall cable grooves to have terminals of the same height, thereby improving the adaptability of the cable management box 1 to different busbars.

[0099] In some embodiments, such as Figure 9 As shown, a positioning groove 15 is provided on the peripheral wall of the wire management box 1 to fix the wiring terminals of the coil winding 4, thereby ensuring a stable relative position between the wiring terminals and the terminals before welding, which facilitates mechanized automatic welding.

[0100] In some embodiments, a positioning notch 13 is provided on the side wall of the wire trough, and a phase wire terminal 22 that is in communication with the wire trough is fixedly provided in the positioning notch 13.

[0101] The terminals include two types: terminal 21 and phase terminal 22. Terminal 21 is used to connect the winding 4, and phase terminal 22 is used to connect the phase wire of the power supply. Terminal 21 and phase terminal 22 can have the same structure, or they can be arranged differently. Figure 5 and Figure 9 As shown, the design adopts a split design with the busbar in contact and conduction. Therefore, a positioning notch 13 is set in the cable management box 1 to position the phase wire terminals 22, ensuring that the phase wire terminals 22 of different phases will not interfere with each other and can be connected and conducted with the corresponding phase busbar.

[0102] The structure of the other parts of this end wiring structure is described in reference to existing technologies and will not be repeated here.

[0103] In addition to the busbars and end wiring structures disclosed in the above embodiments, this utility model also provides a motor stator including the above-mentioned end wiring structure;

[0104] The coil winding 4 inside the motor stator can be connected in a star configuration or in a delta configuration;

[0105] When a star connection is used, the phase wire terminal 41 in the coil winding 4 is connected to the busbar of the corresponding phase, and the wire terminal 42 is connected to the conductor assembly 5. The conductor assembly 5 can be fixedly installed in the cable management box 1 as a busbar, located on the same axial end of the motor stator as other busbars, or it can be... Figure 1 , Figure 2 and Figure 7 As shown, it is located at an axial end that is different from other busbars.

[0106] The structure of other parts of the motor stator is described in reference to existing technologies and will not be repeated here.

[0107] In addition to the busbar, end wiring structure and motor stator disclosed in the above embodiments, this utility model also provides a motor including the above-mentioned motor stator. For the structure of other parts of the motor, please refer to the prior art, which will not be repeated here.

[0108] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0109] The busbar, end wiring structure, motor stator, and motor provided by this utility model have been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A busbar for forming a busbar assembly (2), said busbar assembly (2) for conducting the terminals of the inner coil winding (4) of a motor stator, characterized in that, include: Busbar body; Several terminals are fixed relative to and connected to the bus body, and their length direction is perpendicular to the length direction of the bus body, and the height of the terminals is higher than the height of the bus body.

2. The busbar according to claim 1, characterized in that, The busbar body includes several integrally formed raised sections (211), and the height of the raised sections (211) is higher than the height of other areas of the busbar body. The terminal is fixed relative to and connected to the raised section (211).

3. The busbar according to claim 1, characterized in that, The terminal includes an integrally formed bent section (212) and a return section (213), and the bent section (212) and the return section (213) form a single-end open receiving groove (214) for fixing and conducting the wiring terminal; Alternatively, the terminal may include a bent section (212) for connection of the wiring terminal.

4. The busbar according to claim 3, characterized in that, The terminal is integrally formed with the bus body; Alternatively, the terminal may further include an attachment section (215), which is fixed and connected to the bending section (212) and / or the return section (213), and the attachment section (215) is in contact with and connected to the busbar body.

5. An end wiring structure for connecting and conducting internal wiring terminals of a motor stator, characterized in that, include: The bus as described in any one of claims 1-4; The cable management box (1) includes a connector and several cable slots. The connector is used to fix the connection to the coil winding (4) of the motor stator and / or the stator support assembly (3). The cable slots are used to fix the busbar. The opening height of the cable tray is not higher than the height of the terminal of the busbar located within the cable tray.

6. The end wiring structure according to claim 5, characterized in that, The connector includes several discontinuous bases (11) for increasing the gap between the cable management box (1) and the coil winding (4) and / or the stator support assembly (3); The base (11) is fixedly connected to the cable management box (1), and the top of the base (11) is fixedly connected to the coil winding (4) and / or the stator support assembly (3).

7. The end wiring structure according to claim 5, characterized in that, The cable management box (1) also includes several hollow holes (14) and / or peripheral wall notches (12). The perforated hole (14) is connected to at least one of the grooves; The notch (12) in the peripheral wall connects to the wire groove near the peripheral wall of the wire box (1).

8. The end wiring structure according to claim 5, characterized in that, The side wall of the wire trough is provided with a positioning notch (13), and a phase wire terminal (22) that is connected to the wire trough is fixedly provided in the positioning notch (13).

9. A motor stator, characterized in that, Includes the end wiring structure as described in any one of claims 5-8.

10. An electric motor, characterized in that, Includes the motor stator as described in claim 9.

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