Stator winding wiring structure

Abstract

The utility model discloses a stator winding wiring structure, and the main points of the technical scheme are that the stator winding wiring structure comprises a wiring assembly, a first phase busbar, a second phase busbar, a third phase busbar and a neutral contact busbar, the first phase busbar, the second phase busbar, the third phase busbar and the neutral contact busbar are all arranged on the wiring assembly, the first phase busbar is connected with a leading-out wire of the first phase winding, the second phase busbar is connected with a leading-out wire of the second phase winding, the third phase busbar is connected with a leading-out wire of the third phase winding, and the neutral contact busbar is arranged on the wiring assembly. And the neutral contact busbar is connected with a contact line of the first phase winding, a contact line of the second phase winding and a contact line of the third phase winding. According to the utility model, the wiring process can be simplified and the manufacturing efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the field of motors, in particular to a stator winding connection structure. Background Art

[0002] In the prior art, the main function of the stator winding is to generate a rotating magnetic field. It is usually composed of multiple coils or coil groups connected together. As the power heart of the permanent magnet synchronous traction machine, its connection and insulation reliability largely determine the operating life and reliability of the motor.

[0003] The coil connection of the stator winding is one of the main processes in winding production, such as Figure 1 As shown, this is the main connection method of the winding coil in the prior art, which uses cold-pressed terminal blocks for crimping and fixing, and then insulates and wraps them after crimping. Finally, the coil lead wires, cables, etc. are tied and fixed by binding tape. However, the wiring process of this scheme is cumbersome and the degree of automation is low, resulting in low wiring efficiency. Summary of the invention

[0004] The utility model aims to provide a stator winding connection structure, which can simplify the connection process and improve the manufacturing efficiency.

[0005] The technical solutions to achieve the above objectives include the following:

[0006] A stator winding connection structure comprises: a connection assembly, a first phase bus, a second phase bus, a third phase bus and a neutral contact bus, wherein the connection assembly is arranged on a stator core, the first phase bus, the second phase bus, the third phase bus and the neutral contact bus are all arranged on the connection assembly, the first phase bus is connected to the lead wire of the first phase winding, the second phase bus is connected to the lead wire of the second phase winding, the third phase bus is connected to the lead wire of the third phase winding, and the neutral contact bus is connected to the contact wire of the first phase winding, the contact wire of the second phase winding and the contact wire of the third phase winding.

[0007] In some embodiments, the wiring assembly includes: a plurality of arc-shaped wiring boards, wherein the plurality of wiring boards are sequentially spliced ​​end to end to form an annular structure, the wiring boards are arranged on the stator core, and the first phase bus, the second phase bus, the third phase bus and the neutral contact bus are all arranged on the annular structure.

[0008] In some embodiments, a first mounting groove, a second mounting groove, a third mounting groove and a fourth mounting groove are provided on the wiring assembly, the first phase bus is arranged in the first mounting groove, the second phase bus is arranged in the second mounting groove, the third phase bus is arranged in the third mounting groove, and the neutral contact bus is arranged in the fourth mounting groove.

[0009] In some embodiments, the neutral contact bus includes: a neutral main body, a first neutral connection part, a second neutral connection part and a third neutral connection part, the first neutral connection part, the second neutral connection part and the third neutral connection part are all arranged on the neutral main body, the first neutral connection part is connected to the contact line of the first phase winding, the second neutral connection part is connected to the contact line of the second phase winding, and the third neutral connection part is connected to the contact line of the third phase winding.

[0010] In some embodiments, the first phase winding includes: a first coil and a second coil, and the first phase bus includes: a first main body, a first connecting part and a second connecting part, the first connecting part and the second connecting part are both arranged on the first main body, the first main body is connected to the first phase power lead wire, the head end lead wire of the first coil is connected to the first connecting part as the lead wire of the first phase winding, the head end lead wire of the second coil is connected to the second connecting part as the lead wire of the first phase winding, and the tail end lead wire of the first coil and the tail end lead wire of the second coil are both connected to the neutral contact bus as the contact wire of the first phase winding.

[0011] In some embodiments, the second phase winding includes: a third coil and a fourth coil, and the second phase bus includes: a second main body, a third connecting part and a fourth connecting part, the third connecting part and the fourth connecting part are both arranged on the second main body, the second main body is connected to the second phase power supply lead wire, the head end lead wire of the third coil is connected to the third connecting part as the lead wire of the second phase winding, the head end lead wire of the fourth coil is connected to the fourth connecting part as the lead wire of the second phase winding, and the tail end lead wire of the third coil and the tail end lead wire of the fourth coil are both connected to the neutral contact bus as the contact wire of the second phase winding.

[0012] In some embodiments, the third phase winding includes: a fifth coil and a sixth coil, and the third phase bus includes: a third main body, a fifth connection part and a sixth connection part, the fifth connection part and the sixth connection part are both arranged on the third main body, the third main body is connected to the third phase power supply lead wire, the head end lead wire of the fifth coil is connected to the fifth connection part as the lead wire of the third phase winding, the head end lead wire of the sixth coil is connected to the sixth connection part as the lead wire of the third phase winding, and the tail end lead wire of the fifth coil and the tail end lead wire of the sixth coil are both connected to the neutral contact bus as the contact wire of the third phase winding.

[0013] In some embodiments, the first phase winding includes: a first coil and a second coil, and the first phase bus includes: a first main body, a first connecting part and a second connecting part, the first connecting part is arranged on the first main body, the first main body is connected to the first phase power supply lead wire, the head end lead wire of the first coil is connected to the first connecting part as the lead wire of the first phase winding, the tail end lead wire of the first coil is connected to the second connecting part, the head end lead wire of the second coil is connected to the second connecting part, and the tail end lead wire of the second coil is connected to the neutral contact bus as the contact wire of the first phase winding.

[0014] In some embodiments, the second phase winding includes: a third coil and a fourth coil, and the second phase bus includes: a second main body, a third connecting part and a fourth connecting part, the third connecting part is arranged on the second main body, the second main body is connected to the second phase power supply lead wire, the head end lead wire of the third coil is connected to the third connecting part as the lead wire of the second phase winding, the tail end lead wire of the third coil is connected to the fourth connecting part, the head end lead wire of the fourth coil is connected to the fourth connecting part, and the tail end lead wire of the fourth coil is connected to the neutral contact bus as the contact wire of the second phase winding.

[0015] In some embodiments, the third phase winding includes: a fifth coil and a sixth coil, and the third phase bus includes: a third main body, a fifth connection part and a sixth connection part, the fifth connection part is arranged on the third main body, and the third main body is connected to the third phase power supply lead wire, the head end lead wire of the fifth coil is connected to the fifth connection part as the lead wire of the third phase winding, the tail end lead wire of the fifth coil is connected to the sixth connection part, the head end lead wire of the sixth coil is connected to the sixth connection part, and the tail end lead wire of the sixth coil is connected to the neutral contact bus as the contact wire of the third phase winding.

[0016] The technical solution provided by the utility model has the following advantages and effects: the lead wire of the first phase winding is connected to the first phase bus, the lead wire of the second phase winding is connected to the second phase bus, the lead wire of the third phase winding is connected to the third phase bus, the contact wire of the first phase winding, the contact wire of the second phase winding and the contact wire of the third phase winding are all connected to the neutral contact bus, which facilitates the effective electrical connection between each phase cable and the corresponding winding. Compared with the prior art of bundling the windings, the utility model simplifies the wiring process, improves the manufacturing efficiency and is easy to transform to realize automated operation and production. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings herein show specific examples of the technical solutions described in the present utility model, and together with the specific implementation methods constitute a part of the specification, and are used to explain the technical solutions, principles and effects of the present utility model.

[0018] Unless otherwise specified or defined, the same reference numerals in different drawings represent the same or similar technical features, and the same or similar technical features may also be represented by different reference numerals.

[0019] Figure 1 It is a schematic diagram of the U-phase crimping connection of the winding in the prior art;

[0020] Figure 2 It is a three-dimensional structural schematic diagram of the first embodiment of the utility model;

[0021] Figure 3 This is a schematic diagram of winding connection of the first embodiment of the utility model;

[0022] Figure 4 It is a top view of the first embodiment of the utility model;

[0023] Figure 5 yes Figure 4 The enlarged schematic diagram of the middle A part;

[0024] Figure 6 It is a three-dimensional structural schematic diagram of the neutral contact busbar of the first embodiment of the utility model;

[0025] Figure 7 It is a schematic diagram of the three-dimensional structure of the third-phase busbar of the first embodiment of the utility model;

[0026] Figure 8 It is a three-dimensional structural schematic diagram of the second embodiment of the utility model;

[0027] Fig. 9 This is a schematic diagram of winding connection of the second embodiment of the utility model;

[0028] Fig.10 It is a schematic diagram of the connection status of the wiring board and the bus bar in the second embodiment of the utility model.

[0029] Description of reference numerals:

[0030] 1. Wiring assembly; 11. Wiring board; 111. Wire hole; 112. Fixing hole; 12. First mounting slot; 13. Second mounting slot; 14. Third mounting slot; 15. Fourth mounting slot; 2. First phase bus; 21. First main body; 22. First connection part; 23. Second connection part; 3. Second phase bus; 31. Second main body; 32. Third connection part; 33. Fourth connection part; 4. Third phase bus; 41. Third main body; 42. Fifth connection part; 43. Sixth connection part; 5. Neutral contact bus; 51. Neutral main body; 52. First neutral connection part; 53. Second neutral connection part; 54. Third neutral connection part; 6. Stator core; 7. Binding belt. DETAILED DESCRIPTION

[0031] In order to facilitate the understanding of the present invention, specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings.

[0032] Unless otherwise specified or defined, the "first, second..." used in this article is merely used to distinguish names and does not represent a specific quantity or order.

[0033] Unless specifically stated or defined otherwise, the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0034] It should be noted that when a component is considered to be "fixed to" another component, it can be directly fixed to the other component or there can be a central component; when an component is considered to be "connected to" another component, it can be directly connected to the other component or there can be a central component at the same time; when an component is considered to be "installed on" another component, it can be directly installed on the other component or there can be a central component at the same time. When an component is considered to be "set on" another component, it can be directly set on the other component or there can be a central component at the same time.

[0035] Embodiment 1

[0036] like Figure 2-Figure 4 As shown, the stator winding connection structure provided in this embodiment includes: a connection component 1, a first phase bus 2, a second phase bus 3, a third phase bus 4 and a neutral contact bus 5, the connection component 1 is arranged on the stator core 6, the first phase bus 2, the second phase bus 3, the third phase bus 4 and the neutral contact bus 5 are all arranged on the connection component 1, the first phase bus 2 is connected to the lead wire of the first phase winding, the second phase bus 3 is connected to the lead wire of the second phase winding, the third phase bus 4 is connected to the lead wire of the third phase winding, and the neutral contact bus 5 is connected to the contact wire of the first phase winding, the contact wire of the second phase winding and the contact wire of the third phase winding.

[0037] Specifically, the wiring assembly 1 is fixedly arranged on the stator core 6, the first phase winding is a U phase winding, the second phase winding is a V phase winding, the third phase winding is a W phase winding, the first phase bus 2, the second phase bus 3, the third phase bus 4 and the neutral contact bus 5 are made of copper sheets, the lead wire of the first phase winding is welded to the first phase bus 2, the lead wire of the second phase winding is welded to the second phase bus 3, the lead wire of the third phase winding is welded to the third phase bus 4, the contact wire of the first phase winding, the lead wire of the second phase winding is welded to the second phase bus 3, the lead wire of the third phase winding is welded to the third phase bus 4, the contact wire of the first phase winding, the lead wire of the second phase winding, the lead wire of the third phase winding, the lead wire of the third phase winding, the lead wire of the third phase winding, the lead wire of the third phase winding, the lead wire of the third phase winding, the lead wire of the third phase winding, the lead wire of the first phase winding, the lead wire of the third phase winding, the lead wire of the third phase winding, the lead wire of the first phase winding, the lead wire of the third phase winding, the lead wire of the third phase winding, the lead wire of the first phase winding, the lead wire of the first phase winding, the lead wire of the second phase winding, the lead wire of the third phase winding, the lead wire of the third phase winding, the lead wire of the third phase winding, the lead wire of the first ... The contact lines of the two-phase winding and the contact lines of the third-phase winding are both welded to the neutral contact bus 5, which facilitates the effective electrical connection between each phase cable and the corresponding winding. The positions of the first phase bus 2, the second phase bus 3, the third phase bus 4 and the neutral contact bus 5 on the wiring assembly 1 can be adjusted according to the actual winding conditions. Compared with the prior art of binding the windings with binding belts 7, the utility model simplifies the wiring process, improves the manufacturing efficiency and is easy to transform to realize automated operation and production.

[0038] Furthermore, if Figure 2 The wiring assembly 1 includes: a plurality of arc-shaped wiring boards 11, and the plurality of wiring boards 11 are spliced ​​end to end in sequence to form a ring structure, the wiring boards 11 are arranged on the stator core 6, and the first phase bus 2, the second phase bus 3, the third phase bus 4 and the neutral contact bus 5 are all arranged on the ring structure.

[0039] Specifically, by providing a plurality of terminal blocks 11, it is convenient to disassemble the terminal block assembly 1 into a plurality of terminal blocks 11 during transportation, thereby facilitating transportation. In the present application, the terminal block assembly 1 includes four terminal blocks 11, and the four terminal blocks 11 are sequentially spliced ​​end to end to form an annular structure, and are provided on the stator core 6 by bolts, which is convenient for both transportation and installation.

[0040] In addition, the terminal block 11 is provided with a plurality of wire holes 111 and a plurality of fixing holes 112 adapted to bolts. The plurality of wire holes 111 are evenly distributed along the circumference. The arrangement of the wire holes 111 facilitates the lead wires of each phase winding to pass through the wire holes 111 and be welded to the corresponding busbar. The arrangement of the fixing holes 112 facilitates the rod of the bolt to pass through the fixing holes 112, thereby facilitating the bolts to fix the terminal block 11 to the stator core 6.

[0041] Furthermore, if Figure 5 As shown, the wiring assembly 1 is provided with a first mounting groove 12, a second mounting groove 13, a third mounting groove 14 and a fourth mounting groove 15, the first phase bus 2 is arranged in the first mounting groove 12, the second phase bus 3 is arranged in the second mounting groove 13, the third phase bus 4 is arranged in the third mounting groove 14, and the neutral contact bus 5 is arranged in the fourth mounting groove 15.

[0042] Specifically, in the present embodiment, four wiring boards 11 are spliced ​​to form a wiring assembly 1 of a ring structure, and a Y-shaped four-way connection is performed on the winding. Two groups of three-phase power lines are connected, and a total of 6 power lines are connected, which requires two first-phase busbars 2, two second-phase busbars 3, two third-phase busbars 4 and four neutral contact busbars 5. Then, two first installation grooves 12, two second installation grooves 13, two third installation grooves 14 and four fourth installation grooves 15 are correspondingly opened on the wiring assembly 1. The four fourth installation grooves 15 are respectively opened on the four wiring boards 11. The first installation groove 12 is formed by splicing the first grooves opened on adjacent wiring boards 11, the second installation groove 13 is formed by splicing the second grooves opened on adjacent wiring boards 11, and the third installation groove 14 is formed by splicing the third grooves opened on adjacent wiring boards 11. In other embodiments, the number of the first phase busbar 2, the second phase busbar 3, the third phase busbar 4 and the neutral contact busbar 5 and the opening position on the wiring board 11 can be adjusted according to the actual connection method of the winding. By providing the first mounting groove 12 , the second mounting groove 13 , the third mounting groove 14 and the fourth mounting groove 15 , it is convenient to place the first phase bus 2 , the second phase bus 3 , the third phase bus 4 and the neutral contact bus 5 accordingly.

[0043] Furthermore, if Figure 6 As shown, the neutral contact bus 5 includes: a neutral main body 51, a first neutral connection part 52, a second neutral connection part 53 and a third neutral connection part 54, wherein the first neutral connection part 52, the second neutral connection part 53 and the third neutral connection part 54 are all arranged on the neutral main body 51, the first neutral connection part 52 is connected to the contact line of the first phase winding, the second neutral connection part 53 is connected to the contact line of the second phase winding, and the third neutral connection part 54 is connected to the contact line of the third phase winding.

[0044] In practical applications, the neutral main body 51, the first neutral connection part 52, the second neutral connection part 53 and the third neutral connection part 54 can all be made of copper sheets. The first neutral connection part 52 is welded to the contact line of the first phase winding, the second neutral connection part 53 is welded to the contact line of the second phase winding, and the third neutral connection part 54 is welded to the contact line of the third phase winding, so as to realize the connection of the neutral contact of the first phase winding, the neutral contact of the second phase winding and the neutral contact of the third phase winding.

[0045] Furthermore, if Figure 3As shown, the first phase winding includes: a first coil and a second coil, and the first phase bus 2 includes: a first main body 21, a first connecting part 22 and a second connecting part 23, the first connecting part 22 and the second connecting part 23 are both arranged on the first main body 21, the first main body 21 is connected to the first phase power supply lead wire, the first end lead wire of the first coil is connected to the first connecting part 22 as the lead wire of the first phase winding, the first end lead wire of the second coil is connected to the second connecting part 23 as the lead wire of the first phase winding, and the tail end lead wire of the first coil and the tail end lead wire of the second coil are both connected to the neutral contact bus 5 as the contact wire of the first phase winding.

[0046] Specifically, in the present embodiment, the first main body 21, the first connecting portion 22 and the second connecting portion 23 can all be made of copper sheets, the first main body 21 is connected to the first phase power lead wire, that is, the first main body 21 is welded to the U phase power lead wire, the head end lead wire of the first coil is welded to the first connecting portion 22 as the lead wire of the first phase winding, the head end lead wire of the second coil is welded to the second connecting portion 23 as the lead wire of the first phase winding, the tail end lead wire of the first coil is welded to one of the four neutral contact buses 5 as the contact wire of the first phase winding, and the tail end lead wire of the second coil is also welded to one of the remaining three neutral contact buses 5 as the contact wire of the first phase winding, so as to realize the parallel connection of the first coil and the second coil.

[0047] Furthermore, if Figure 3 As shown, the second phase winding includes: a third coil and a fourth coil, and the second phase bus 3 includes: a second main body 31, a third connection part 32 and a fourth connection part 33, the third connection part 32 and the fourth connection part 33 are both arranged on the second main body 31, the second main body 31 is connected to the second phase power supply lead wire, the head end lead wire of the third coil is connected to the third connection part 32 as the lead wire of the second phase winding, the head end lead wire of the fourth coil is connected to the fourth connection part 33 as the lead wire of the second phase winding, and the tail end lead wire of the third coil and the tail end lead wire of the fourth coil are both connected to the neutral contact bus 5 as the contact wire of the second phase winding.

[0048] Specifically, in the present embodiment, the second main body 31, the third connection part 32 and the fourth connection part 33 can all be made of copper sheets, the second main body 31 is connected to the second phase power lead wire, that is, the second main body 31 is welded to the V-phase power lead wire, the head end lead wire of the third coil is welded to the third connection part 32 as the lead wire of the second phase winding, the head end lead wire of the fourth coil is welded to the fourth connection part 33 as the lead wire of the second phase winding, the tail end lead wire of the third coil is welded to one of the four neutral contact buses 5 as the contact wire of the second phase winding, and the tail end lead wire of the fourth coil is also welded to one of the remaining three neutral contact buses 5 as the contact wire of the second phase winding, so as to realize the parallel connection of the third coil and the fourth coil.

[0049] Furthermore, if Figure 3 and Figure 7 As shown, the third phase winding includes: a fifth coil and a sixth coil, and the third phase bus 4 includes: a third main body 41, a fifth connection part 42 and a sixth connection part 43, the fifth connection part 42 and the sixth connection part 43 are both arranged on the third main body 41, the third main body 41 is connected to the third phase power supply lead wire, the head end lead wire of the fifth coil is connected to the fifth connection part 42 as the lead wire of the third phase winding, the head end lead wire of the sixth coil is connected to the sixth connection part 43 as the lead wire of the third phase winding, and the tail end lead wire of the fifth coil and the tail end lead wire of the sixth coil are both connected to the neutral contact bus 5 as the contact wire of the third phase winding.

[0050] Specifically, in Figure 3 The first phase power lead wire, the second phase power lead wire, the third phase power lead wire, the first coil, the second coil, the third coil, the fourth coil, the fifth coil and the sixth coil are all drawn with dotted lines. In this embodiment, the third main body 41, the fifth connection part 42 and the sixth connection part 43 can all be made of copper sheets. The third main body 41 is connected to the third phase power lead wire, that is, the third main body 41 is welded to the W phase power lead wire, the first end lead wire of the fifth coil is welded to the fifth connection part 42 as the lead wire of the third phase winding, the first end lead wire of the sixth coil is welded to the sixth connection part 43 as the lead wire of the third phase winding, the tail end lead wire of the fifth coil is welded to one of the four neutral contact busbars 5 as the contact wire of the third phase winding, and the tail end lead wire of the sixth coil is also welded to one of the remaining three neutral contact busbars 5 as the contact wire of the third phase winding, so as to realize the parallel connection of the fifth coil and the sixth coil.

[0051] Embodiment 2

[0052] like Figure 8-10As shown, the difference from Example 1 is that the wiring method of the winding of Example 2 is a Y-shaped two-way connection method, the first phase winding includes: a first coil and a second coil, the first phase bus 2 includes: a first main body 21, a first connecting part 22 and a second connecting part 23, the first connecting part 22 is arranged on the first main body 21, the first main body 21 is connected to the first phase power supply lead wire, the first end lead wire of the first coil is connected to the first connecting part 22 as the lead wire of the first phase winding, the tail end lead wire of the first coil is connected to the second connecting part 23, the first end lead wire of the second coil is connected to the second connecting part 23, and the tail end lead wire of the second coil is connected to the neutral contact bus 5 as the contact line of the first phase winding.

[0053] Specifically, for a Y-shaped two-way winding connection, two first-phase busbars 2, two second-phase busbars 3, two third-phase busbars 4 and two neutral contact busbars 5 are required, and two first mounting grooves 12, two second mounting grooves 13, two third mounting grooves 14 and two fourth mounting grooves 15 are correspondingly opened on the wiring assembly 1, and the two fourth mounting grooves 15 are respectively opened on two opposite wiring boards 11; the first main body 21 is welded to the U-phase power supply lead wire, the head end lead wire of the first coil is welded to the first connecting part 22 as the lead wire of the first phase winding, the tail end lead wire of the first coil is welded to the second connecting part 23, the head end lead wire of the second coil is welded to the second connecting part 23, and the tail end lead wire of the second coil is welded to one of the two neutral contact busbars 5 as the contact wire of the first phase winding, so as to realize the series connection of the first coil and the second coil.

[0054] Furthermore, the second phase winding includes: a third coil and a fourth coil, and the second phase bus 3 includes: a second main body 31, a third connecting part 32 and a fourth connecting part 33, the third connecting part 32 is arranged on the second main body 31, the second main body 31 is connected to the second phase power supply lead wire, the head end lead wire of the third coil is connected to the third connecting part 32 as the lead wire of the second phase winding, the tail end lead wire of the third coil is connected to the fourth connecting part 33, the head end lead wire of the fourth coil is connected to the fourth connecting part 33, and the tail end lead wire of the fourth coil is connected to the neutral contact bus 5 as the contact wire of the second phase winding.

[0055] Specifically, the second main body 31 is welded to the V-phase power lead wire, the lead wire of the first end of the third coil is welded to the third connection part 32 as the lead wire of the second phase winding, the lead wire of the tail end of the third coil is welded to the fourth connection part 33, the lead wire of the first end of the fourth coil is welded to the fourth connection part 33, and the lead wire of the tail end of the fourth coil is welded to one of the two neutral contact bus bars 5 as the contact wire of the second phase winding, thereby realizing the series connection of the third coil and the fourth coil.

[0056] Furthermore, the third phase winding includes: a fifth coil and a sixth coil, and the third phase bus 4 includes: a third main body 41, a fifth connection part 42 and a sixth connection part 43, the fifth connection part 42 is arranged on the third main body 41, and the third main body 41 is connected to the third phase power supply lead wire, the head end lead wire of the fifth coil is connected to the fifth connection part 42 as the lead wire of the third phase winding, the tail end lead wire of the fifth coil is connected to the sixth connection part 43, the head end lead wire of the sixth coil is connected to the sixth connection part 43, and the tail end lead wire of the sixth coil is connected to the neutral contact bus 5 as the contact wire of the third phase winding.

[0057] Specifically, in Fig. 9 The first coil, the second coil, the third coil, the fourth coil, the fifth coil and the sixth coil are all drawn with dotted lines, the third main body 41 is welded to the W-phase power supply lead wire, the head end lead wire of the fifth coil is welded to the fifth connecting part 42 as the lead wire of the third phase winding, the tail end lead wire of the fifth coil is welded to the sixth connecting part 43, the head end lead wire of the sixth coil is welded to the sixth connecting part 43, the tail end lead wire of the sixth coil is welded to one of the two neutral contact bus bars 5 as the contact wire of the third phase winding, thereby realizing the series connection of the fifth coil and the sixth coil.

[0058] When quoting drawing descriptions, new features that appear are described; in order to avoid repeated quotations of drawings resulting in less concise descriptions, features that have been described clearly will not be quoted in the drawings one by one.

[0059] The purpose of the above embodiments is to exemplarily reproduce and deduce the technical solution of the utility model, and to fully describe the technical solution, purpose and effect of the utility model. Its purpose is to make the public understand the disclosed content of the utility model more thoroughly and comprehensively, and it does not limit the protection scope of the utility model.

[0060] The above embodiments are not exhaustive enumerations based on the present invention, and there may be multiple other implementations not listed. Any replacement and improvement made without violating the concept of the present invention shall fall within the protection scope of the present invention.

Claims

1. The stator winding connection structure is characterized by: include: A wiring assembly, a first phase bus, a second phase bus, a third phase bus and a neutral contact bus, wherein the wiring assembly is arranged on the stator core, the first phase bus, the second phase bus, the third phase bus and the neutral contact bus are all arranged on the wiring assembly, the first phase bus is connected to the lead wire of the first phase winding, the second phase bus is connected to the lead wire of the second phase winding, the third phase bus is connected to the lead wire of the third phase winding, and the neutral contact bus is connected to the contact wire of the first phase winding, the contact wire of the second phase winding and the contact wire of the third phase winding.

2. The stator winding connection structure according to claim 1, characterized in that: The wiring assembly includes: a plurality of arc-shaped wiring boards, which are spliced ​​end to end in sequence to form an annular structure, the wiring boards are arranged on the stator core, and the first phase bus, the second phase bus, the third phase bus and the neutral contact bus are all arranged on the annular structure.

3. The stator winding connection structure according to claim 1, characterized in that: The wiring assembly is provided with a first mounting groove, a second mounting groove, a third mounting groove and a fourth mounting groove, the first phase bus is arranged in the first mounting groove, the second phase bus is arranged in the second mounting groove, the third phase bus is arranged in the third mounting groove, and the neutral contact bus is arranged in the fourth mounting groove.

4. The stator winding connection structure according to claim 1, characterized in that: The neutral contact bus includes: a neutral main body, a first neutral connection part, a second neutral connection part and a third neutral connection part, wherein the first neutral connection part, the second neutral connection part and the third neutral connection part are all arranged on the neutral main body, the first neutral connection part is connected to the contact line of the first phase winding, the second neutral connection part is connected to the contact line of the second phase winding, and the third neutral connection part is connected to the contact line of the third phase winding.

5. The stator winding connection structure according to any one of claims 1 to 4, characterized in that: The first phase winding includes: a first coil and a second coil, and the first phase bus includes: a first main body, a first connecting part and a second connecting part, the first connecting part and the second connecting part are both arranged on the first main body, the first main body is connected to the first phase power supply lead wire, the head end lead wire of the first coil is connected to the first connecting part as the lead wire of the first phase winding, the head end lead wire of the second coil is connected to the second connecting part as the lead wire of the first phase winding, and the tail end lead wire of the first coil and the tail end lead wire of the second coil are both connected to the neutral contact bus as the contact wire of the first phase winding.

6. The stator winding connection structure according to any one of claims 1 to 4, characterized in that: The second phase winding includes: a third coil and a fourth coil, and the second phase bus includes: a second main body, a third connecting part and a fourth connecting part, the third connecting part and the fourth connecting part are both arranged on the second main body, the second main body is connected to the second phase power supply lead wire, the head end lead wire of the third coil is connected to the third connecting part as the lead wire of the second phase winding, the head end lead wire of the fourth coil is connected to the fourth connecting part as the lead wire of the second phase winding, and the tail end lead wire of the third coil and the tail end lead wire of the fourth coil are both connected to the neutral contact bus as the contact wire of the second phase winding.

7. The stator winding connection structure according to any one of claims 1 to 4, characterized in that: The third phase winding includes: a fifth coil and a sixth coil, and the third phase bus includes: a third main body, a fifth connection part and a sixth connection part, the fifth connection part and the sixth connection part are both arranged on the third main body, the third main body is connected to the third phase power supply lead wire, the head end lead wire of the fifth coil is connected to the fifth connection part as the lead wire of the third phase winding, the head end lead wire of the sixth coil is connected to the sixth connection part as the lead wire of the third phase winding, and the tail end lead wire of the fifth coil and the tail end lead wire of the sixth coil are both connected to the neutral contact bus as the contact wire of the third phase winding.

8. The stator winding connection structure according to any one of claims 1 to 4, characterized in that: The first phase winding includes: a first coil and a second coil, and the first phase bus includes: a first main body, a first connecting part and a second connecting part, the first connecting part is arranged on the first main body, the first main body is connected to the first phase power supply lead wire, the head end lead wire of the first coil is connected to the first connecting part as the lead wire of the first phase winding, the tail end lead wire of the first coil is connected to the second connecting part, the head end lead wire of the second coil is connected to the second connecting part, and the tail end lead wire of the second coil is connected to the neutral contact bus as the contact wire of the first phase winding.

9. The stator winding connection structure according to any one of claims 1 to 4, characterized in that: The second phase winding includes: a third coil and a fourth coil, and the second phase bus includes: a second main body, a third connecting part and a fourth connecting part, the third connecting part is arranged on the second main body, the second main body is connected to the second phase power supply lead wire, the head end lead wire of the third coil is connected to the third connecting part as the lead wire of the second phase winding, the tail end lead wire of the third coil is connected to the fourth connecting part, the head end lead wire of the fourth coil is connected to the fourth connecting part, and the tail end lead wire of the fourth coil is connected to the neutral contact bus as the contact wire of the second phase winding.

10. The stator winding connection structure according to any one of claims 1 to 4, characterized in that: The third phase winding includes: a fifth coil and a sixth coil, and the third phase bus includes: a third main body, a fifth connecting part and a sixth connecting part. The fifth connecting part is arranged on the third main body, and the third main body is connected to the third phase power supply lead wire. The head end lead wire of the fifth coil is connected to the fifth connecting part as the lead wire of the third phase winding, and the tail end lead wire of the fifth coil is connected to the sixth connecting part. The head end lead wire of the sixth coil is connected to the sixth connecting part, and the tail end lead wire of the sixth coil is connected to the neutral contact bus as the contact wire of the third phase winding.

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