busbar, stator, electric machine, electric power steering system, and vehicle

Abstract

The application discloses a busbar, a motor, an electric power steering system and a vehicle, wherein the busbar comprises a terminal and a skeleton, the terminal comprises a first connecting section and a third connecting section which are connected with each other; the skeleton comprises a ring-shaped support and a strip-shaped support, the strip-shaped support is connected with the ring-shaped support and is arranged along the axial direction of the ring-shaped support, the ring-shaped support is provided with a first positioning groove for positioning the third connecting section, the strip-shaped support is provided with an insertion slot for accommodating part of the first connecting section, the insertion slot is provided with an avoiding gap which is arranged towards the first positioning groove, and part of the third connecting section is arranged in the avoiding gap. The first positioning groove is arranged on the ring-shaped support, the root of the terminal is positioned, the position degree of the terminal relative to the skeleton is ensured, the top of the terminal can have a certain flexibility and can freely swing in a small range, the height of the terminal is ensured by the height of the first positioning groove, and the rigidity when the plug-in part is inserted is ensured.

Description

Technical Field

[0001] This invention relates to the field of motor technology, and particularly to busbars, stators, motors, electric power steering systems, and vehicles. Background Technology

[0002] In related technologies, when the terminals of the busbar are plugged into the female terminal, they are prone to excessive deformation under pressure, resulting in high assembly difficulty and low assembly yield. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes a bus that can reduce the difficulty of assembly during terminal mating.

[0004] The present invention also proposes a stator having the above-mentioned busbar.

[0005] The present invention also proposes an electric motor having the above-described stator.

[0006] The present invention also proposes an electric power steering system having the above-mentioned motor.

[0007] The present invention also proposes a vehicle having the above-described electric power steering system.

[0008] According to a first aspect of the present invention, a bus includes terminals and a frame. The terminals include a first connecting segment and a second connecting segment connected to each other. The frame includes an annular support and a strip support. The strip support is connected to the annular support and is arranged along the axial direction of the annular support. The annular support has a first positioning groove for positioning the second connecting segment. The strip support has a slot for receiving a portion of the first connecting segment. The slot has a clearance notch facing the first positioning groove. A portion of the second connecting segment passes through the clearance notch.

[0009] The busbar according to the embodiments of the present invention has at least the following beneficial effects: by setting a first positioning groove on the annular bracket, the root of the terminal is positioned, which facilitates welding, ensures the positional accuracy of the terminal relative to the skeleton, and allows the top of the terminal to have a certain degree of flexibility, enabling it to swing freely in a small range. The height of the terminal is ensured by the height of the first positioning groove, ensuring the rigidity when the plug is inserted, and facilitating the assembly and connection stability of the plug.

[0010] According to some embodiments of the present invention, the annular bracket is further provided with a second positioning groove, and the terminal further includes a third connecting segment accommodated in the second positioning groove, the third connecting segment being connected to the second connecting segment, the first positioning groove being disposed along a first direction, and the second positioning groove being disposed along a second direction.

[0011] According to some embodiments of the present invention, the first direction is the radial direction of the annular support, and the second direction is the circumferential direction of the annular support.

[0012] According to some embodiments of the present invention, the depth of the slot along the thickness direction of the first connecting segment is greater than the thickness of the first connecting segment; the width of the slot along the width direction of the first connecting segment is greater than the width of the first connecting segment.

[0013] According to some embodiments of the present invention, the first connecting segment is provided with a support protrusion, and the strip-shaped bracket is provided with a limiting groove for accommodating the support protrusion, the limiting groove being located at one end of the strip-shaped bracket opposite to the first positioning groove.

[0014] According to some embodiments of the present invention, the busbar further includes a wiring assembly, the wiring assembly including a main body and a connecting part, the main body being embedded in the annular bracket, the connecting part being connected to the main body and protruding outward from the outer side of the frame, the connecting part including a plurality of radial hooks located at the lower end of the terminal, the openings of the radial hooks being arranged radially along the annular bracket.

[0015] According to some embodiments of the present invention, the busbar further includes a wiring assembly, the wiring assembly including a plurality of bus bars stacked radially along the annular bracket, a plurality of hooks connected to the bottom of the plurality of bus bars, the plurality of hooks being located on the outer periphery of the annular bracket, and the upper part of the plurality of bus bars being provided with a welding portion for welding to the terminal, the welding portion being arranged axially along the annular bracket.

[0016] According to some embodiments of the present invention, the welded portion includes a first welding protrusion and a second welding protrusion. The first welding protrusion includes a first welding segment disposed along the axial direction of the annular bracket. The second welding protrusion includes a second welding segment and a bent segment. The second welding segment is disposed along the axial direction of the annular bracket. The first welding segment and the second welding segment are offset from the first connecting segment in the circumferential direction of the annular bracket. One end of the bent segment is connected to the second welding segment, and the other end is connected to the busbar. The first welding segment and the second welding segment are both located above the same busbar. In the radial direction of the annular bracket, the bent segment is located at the end of the second welding segment closer to the strip bracket.

[0017] According to some embodiments of the present invention, the busbar further includes a wiring assembly, the wiring assembly including an outer busbar and an inner busbar, the outer busbar and the inner busbar being stacked radially along the annular support, both the outer busbar and the inner busbar being provided with a plurality of hooks, the number of hooks on the outer busbar being greater than the number of hooks on the inner busbar.

[0018] According to some embodiments of the present invention, the busbar further includes a wiring assembly, which includes a first layer busbar, a second layer busbar, a third layer busbar, and a fourth layer busbar arranged concentrically from the inside out. The first layer busbar includes independent first and second arc-shaped units, the second layer busbar includes independent third and fourth arc-shaped units, the third layer busbar includes independent fifth and sixth arc-shaped units, and the fourth layer busbar includes independent seventh and eighth arc-shaped units. The first, third, fifth, and seventh arc-shaped units are located on the same side, and the first, third, and fifth arc-shaped units are arranged counterclockwise. The needles are staggered in direction; the third arc-shaped unit partially surrounds the first arc-shaped unit, the fifth arc-shaped unit partially surrounds the third arc-shaped unit, and the seventh arc-shaped unit surrounds the first and third arc-shaped units, and partially surrounds the fifth arc-shaped unit; the second, fourth, sixth, and eighth arc-shaped units are located on the other side, and the second, fourth, and sixth arc-shaped units are staggered in a clockwise direction; the fourth arc-shaped unit partially surrounds the second arc-shaped unit, the sixth arc-shaped unit partially surrounds the fourth arc-shaped unit, and the eighth arc-shaped unit surrounds the fourth and sixth arc-shaped units, and partially surrounds the second arc-shaped unit.

[0019] According to some embodiments of the present invention, the busbar further includes a wiring assembly, the wiring assembly comprising a first layer busbar, a second layer busbar, a third layer busbar, and a fourth layer busbar arranged concentrically from the inside out. The first layer busbar includes independent first and second arc-shaped units, the second layer busbar includes independent third and fourth arc-shaped units, the third layer busbar includes independent fifth and sixth arc-shaped units, and the fourth layer busbar includes independent seventh and eighth arc-shaped units. The first, third, fifth, and seventh arc-shaped units are positioned... On the same side, and staggered sequentially in a clockwise direction; the first arc-shaped unit and the third arc-shaped unit are spaced apart along the circumference of the ring-shaped bracket, the fifth arc-shaped unit partially surrounds the third arc-shaped unit, and the seventh arc-shaped unit partially surrounds the fifth arc-shaped unit; the second arc-shaped unit, the fourth arc-shaped unit, the sixth arc-shaped unit and the eighth arc-shaped unit are located on the other side, and staggered sequentially in a counterclockwise direction; the second arc-shaped unit and the fourth arc-shaped unit are spaced apart along the circumference of the ring-shaped bracket, the sixth arc-shaped unit partially surrounds the fourth arc-shaped unit, and the eighth arc-shaped unit partially surrounds the sixth arc-shaped unit.

[0020] According to some embodiments of the present invention, the busbar further includes a wiring assembly, which includes a plurality of neutral hooks, a plurality of U-phase hooks, a plurality of V-phase hooks and a plurality of W-phase hooks. The U-phase hooks, the V-phase hooks and the W-phase hooks are arranged in a circumferential manner. The neutral hook is provided between adjacent U-phase hooks and V-phase hooks, between adjacent V-phase hooks and W-phase hooks, and between adjacent W-phase hooks and U-phase hooks.

[0021] The stator according to a second aspect embodiment of the present invention includes the bus according to a first aspect embodiment of the present invention.

[0022] The stator according to the embodiments of the present invention has at least the following beneficial effects: by adopting the bus of the first aspect embodiment of the present invention, it is convenient to assemble and plug in, reducing the difficulty of assembly when plugging in terminals and ensuring the stability of the connection during use.

[0023] According to some embodiments of the present invention, the stator includes multiple core units, which are spliced ​​together to form a ring structure. Each core unit has a set of coil windings wound around its outer periphery. Each set of coil windings has two terminals. The busbar includes a wiring assembly, which is provided with multiple hooks that connect to the terminals. The number of hooks is equal to the number of terminals.

[0024] According to some embodiments of the present invention, the stator includes multiple core units, which are spliced ​​together to form a ring structure. In every four consecutively arranged core units, the outer periphery of the two core units located at both ends is wound with the same set of coil windings. Each set of coil windings is provided with two terminals. The busbar includes a wiring assembly, which is provided with multiple hooks connected to the terminals. The number of hooks is equal to the number of terminals.

[0025] The motor according to a third aspect embodiment of the present invention includes the stator of the second aspect embodiment of the present invention.

[0026] The motor according to the embodiments of the present invention has at least the following beneficial effects: by adopting the stator of the second aspect embodiment of the present invention, it is easy to assemble and plug, reducing the difficulty of assembly when plugging terminals and ensuring the stability of the connection during use.

[0027] An electric power steering system according to a fourth aspect of the present invention includes a motor according to a third aspect of the present invention.

[0028] The electric power steering system according to embodiments of the present invention has at least the following advantages: by employing the motor of the third aspect embodiment of the present invention, assembly is facilitated, while ensuring the stability of the connection during use.

[0029] A vehicle according to a fifth aspect embodiment of the present invention includes an electric power steering system according to a fourth aspect embodiment of the present invention.

[0030] The vehicle according to the embodiments of the present invention has at least the following beneficial effects: by adopting the electric power steering system of the fourth aspect embodiment of the present invention, it is easy to assemble, while ensuring the stability of the connection during use.

[0031] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0032] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0033] Figure 1 This is a schematic diagram of a busbar structure according to an embodiment of the present invention;

[0034] Figure 2 for Figure 1 The diagram shown is a bus with terminals omitted.

[0035] Figure 3 for Figure 2 The enlarged view at point B is shown;

[0036] Figure 4 for Figure 1 The enlarged view at point A is shown;

[0037] Figure 5 for Figure 1 The diagram shows the connection between the terminals and the wiring assembly;

[0038] Figure 6 for Figure 5 A schematic diagram of the wiring assembly is shown;

[0039] Figure 7 This is a schematic diagram of the first layer of copper busbars (the innermost ring);

[0040] Figure 8 This is a schematic diagram of the second layer of copper busbars;

[0041] Figure 9 This is a schematic diagram of the third layer of copper busbars;

[0042] Figure 10 This is a schematic diagram of the fourth layer of copper busbars (outermost ring);

[0043] Figure 11 This is a schematic diagram of another bus structure according to an embodiment of the present invention;

[0044] Figure 12 for Figure 11 The diagram shown is a bus with terminals omitted.

[0045] Figure 13 for Figure 11 The diagram shows the connection between the terminals and the wiring assembly;

[0046] Figure 14 for Figure 13 A schematic diagram of the wiring assembly is shown;

[0047] Figure 15 This is a schematic diagram of one structure of the stator according to an embodiment of the present invention;

[0048] Figure 16 This is a schematic diagram of another stator structure according to an embodiment of the present invention.

[0049] Figure label:

[0050] 101. Terminal; 102. Ring-shaped bracket; 103. Strip-shaped bracket; 104. Hook; 105. Clip; 106. Welding part; 107. Deformation groove; 108. Fixing part; 109. Hooking part; 110. Transition part;

[0051] 201. Limiting groove;

[0052] 301, slot; 302, clearance notch; 303, first positioning slot; 304, second positioning slot;

[0053] 401. First connecting segment; 402. Second connecting segment; 403. Third connecting segment;

[0054] 501. Support protrusion; 502. Insertion part; 503. Clearance groove; 504. Protrusion;

[0055] 601. First layer of copper busbar; 602. Second layer of copper busbar; 603. Third layer of copper busbar; 604. Fourth layer of copper busbar;

[0056] 701. First connecting strip; 702. First arc-shaped unit; 703. Second arc-shaped unit; 704. Second connecting strip; 705. First welding segment;

[0057] 801. Third connecting strip; 802. Third arc-shaped unit; 803. Fourth arc-shaped unit; 804. Fourth connecting strip; 805. Second welding section; 806. Bending section;

[0058] 901. Fifth connecting strip; 902. Fifth arc-shaped unit; 903. Sixth arc-shaped unit; 904. Sixth connecting strip;

[0059] 1001, Seventh connecting strip; 1002, Seventh arc-shaped unit; 1003, Eighth arc-shaped unit; 1004, Eighth connecting strip;

[0060] 1501, Core Unit 1; 1502, Core Unit 2; 1503, Core Unit 3; 1504, Core Unit 4; 1505, Core Unit 5; 1506, Core Unit 6; 1507, Core Unit 7; 1508, Core Unit 8; 1509, Core Unit 9; 1510, Core Unit 10; 1511, Core Unit 11; 1512, Core Unit 12; 1513, Coil Winding; 1514, Terminal. Detailed Implementation

[0061] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0062] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0063] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0064] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0065] The following reference Figures 1 to 16 This describes the bus, motor, electric power steering system, and vehicle according to embodiments of the present invention.

[0066] Reference Figures 1 to 4 As shown, the bus in the first aspect embodiment includes a terminal 101, a wiring assembly, and a frame. The frame is an insulating component and can be injection molded. The frame includes an annular support 102 and multiple strip supports 103. The multiple strip supports 103 are connected to the annular support 102. The strip supports 103 are arranged along the axial direction of the annular support 102. A slot 301 is provided on the strip supports 103. The slot 301 is also arranged along the axial direction of the annular support 102. The slot 301 is used to accommodate part of the terminal 101. The slot 301 is provided with a clearance notch 302 for one end of the terminal 101 to pass through, so that one end of the terminal 101 protrudes from the slot 301. The protruding end of the terminal 101 from the slot 301 is connected to the wiring assembly.

[0067] In related technologies, terminal 101 and slot 301 are tightly fitted. This tight fit ensures the positional accuracy of terminal 101 relative to the frame, preventing misalignment and skew during soldering. It also ensures the rigidity of terminal 101, facilitating stable plug-in connections. However, because the degree of freedom of terminal 101 is significantly restricted, when it is inserted into the power supply female terminal (not shown in the figure), any positional deviation can lead to excessive deformation under pressure, resulting in high assembly difficulty and low assembly yield.

[0068] To solve the above problems, refer to Figures 3 to 4 As shown, the annular bracket 102 of this embodiment of the invention is provided with a first positioning groove 303 and a second positioning groove 304. The clearance notch 302 is positioned towards the first positioning groove 303. Both the first positioning groove 303 and the second positioning groove 304 are used to position the terminal 101. The first positioning groove 303 is positioned along a first direction, and the second positioning groove 304 is positioned along a second direction. The first direction and the second direction are not the same and are not parallel, and have an included angle greater than ° and less than °. That is, by positioning the terminal 101 in different directions, the first positioning groove 303 and the second positioning groove 304 make the positional accuracy of the terminal 101 higher and the positioning effect better.

[0069] It should be noted that the annular bracket 102 may also only have a first positioning groove 303 or a second positioning groove 304, and the terminal 101 may be positioned by the first positioning groove 303 or the second positioning groove 304. That is, the annular bracket 102 may also position the terminal 101 in only one direction. However, the annular bracket 102 of this embodiment of the invention has a first positioning groove 303 and a second positioning groove 304. The advantage is that by positioning the terminal 101 in two directions, the positional accuracy of the terminal 101 is higher and the positioning effect is better.

[0070] Since the skeleton includes a ring-shaped support 102 and multiple strip-shaped supports 103, with the strip-shaped supports 103 located above the ring-shaped support 102, and the slot 301 disposed on the strip-shaped support 103, and the first positioning groove 303 and the second positioning groove 304 disposed on the ring-shaped support 102, the first positioning groove 303 and the second positioning groove 304 are located below the slot 301, and referring to... Figure 1 As shown, one end of terminal 101 protrudes from slot 301 and extends to the first positioning groove 303 and the second positioning groove 304 for positioning, while the other end of terminal 101 extends upward through slot 301 for insertion with the female end. That is, the root of terminal 101 is positioned by the first positioning groove 303 and the second positioning groove 304, while the top of terminal 101 is used for insertion with the female end. The first positioning groove 303 and the second positioning groove 304 provide two different directions for positioning the root of terminal 101, facilitating welding and ensuring the positional accuracy of terminal 101 relative to the frame. Since the root of terminal 101 is sufficiently positioned, the freedom of the top of terminal 101 is reduced; the tight fit between terminal 101 and slot 301 can be changed to a clearance fit, allowing the top of terminal 101 to have a certain degree of flexibility and slight free swing. The height of terminal 101 is ensured by the height of the bottom of the first positioning groove 303 or the second positioning groove 304, ensuring rigidity during insertion and facilitating the assembly and connection stability of the plug-in.

[0071] Reference Figure 4As shown, terminal 101 includes a first connecting segment 401, a second connecting segment 402, and a third connecting segment 403. The first connecting segment 401 is accommodated in a slot 301, the second connecting segment 402 is accommodated in a first positioning groove 303, and the third connecting segment 403 is accommodated in a second positioning groove 304. One end of the second connecting segment 402 is bent into the first connecting segment 401, and the other end of the second connecting segment 402 is bent into the third connecting segment 403. The width of the first connecting segment 401 is greater than that of the second connecting segment 402 and the third connecting segment 403. During installation, terminal 101 is inserted into slot 301, with the second connecting segment 402 and the third connecting segment 403 protruding from slot 301. Then, the second connecting segment 402 is installed in the first positioning groove 303, and the third connecting segment 403 is installed in the second positioning groove 304. The third connecting segment 403 is then connected to the wiring assembly. The height of the terminal 101 is ensured by the height of the bottom of the first positioning groove 303, which ensures the rigidity in the vertical direction when the plug is inserted, and facilitates the assembly and connection stability of the plug.

[0072] Reference Figure 1 As shown, it can be understood that the first direction is the radial direction of the annular bracket 102, and the second direction is the circumferential direction of the annular bracket 102. That is, the first direction and the second direction are perpendicular to each other. The terminal 101 is limited in the radial and circumferential directions of the annular bracket 102, so that the terminal 101 is subjected to more uniform force and is not easy to deviate.

[0073] It should be noted that the first direction may also have an angle of 10°, 12° or 15° with the radial direction of the annular support 102, and the second direction may also have an angle of 5°, 8° or 10° with the circumferential direction of the annular support 102.

[0074] Reference Figure 3 and Figure 4 As shown, it can be understood that the slot 301 is arranged in the vertical direction, that is, along the axial direction of the annular bracket 102; the first positioning groove 303 is arranged in the front-back direction, that is, along the radial direction of the annular bracket 102; and the second positioning groove 304 is arranged in the left-right direction, that is, along the circumference of the annular bracket 102. Furthermore, the first positioning groove 303 is located at the lower end of the slot 301 and communicates with the slot 301, the second positioning groove 304 is located at the front end of the first positioning groove 303, and the height of the second positioning groove 304 is lower than the height of the first positioning groove 303.

[0075] During installation, terminal 101 is inserted from the top of slot 301, i.e., from the end of slot 301 furthest from the first positioning groove 303, downwards. The width of the second connecting segment 402 is smaller than the width of slot 301 and is adapted to the clearance notch 302. The width of the first connecting segment 401 is larger than the width of clearance notch 302, allowing the first connecting segment 401 to pass through clearance notch 302 and exit slot 301, while remaining within slot 301. That is, when terminal 101 is inserted into slot 301 from top to bottom, the first connecting segment 401 is confined within slot 301, while the second connecting segment 402 and the third connecting segment 403 protrude outside slot 301. When terminal 101 moves to the bottom of slot 301, the second connecting segment 402 enters the first positioning groove 303, and the third connecting segment 403 enters the second positioning groove 304, completing the positioning of terminal 101. The second connecting section 402 abuts against the bottom surface of the first positioning groove 303, forming a support for the terminal 101 and improving the rigidity of the terminal 101.

[0076] It is understood that the depth of the slot 301 along the thickness direction of the first connecting segment 401 is greater than the thickness of the first connecting segment 401, that is, the depth of the slot 301 along the thickness direction of the terminal 101 is greater than the thickness of the terminal 101, as shown in the reference. Figure 4 As shown, in the front-back direction of terminal 101, there is a gap between terminal 101 and slot 301, which ensures the flexibility of the top of terminal 101 in the front-back direction, allowing terminal 101 to swing freely in the front-back direction with a small amplitude, better adapting to the positional deviation in the front-back direction during installation, and facilitating the assembly of plug-in components.

[0077] It is understandable that the width of slot 301 along the width direction of the first connecting segment 401 is greater than the width of the first connecting segment 401, that is, the width of slot 301 along the width direction of terminal 101 is greater than the width of terminal 101, as shown in the reference. Figure 4 As shown, there is a gap between terminal 101 and slot 301 in the left and right directions of terminal 101, which ensures the flexibility of the top of terminal 101 in the left and right directions, allowing terminal 101 to swing freely in the left and right directions with a small amplitude, better adapting to the positional deviation in the left and right directions during installation, and facilitating the assembly of plug-in components.

[0078] It is understandable that there may be a gap between the terminal 101 and the slot 301 only in the front-back direction or the left-right direction, or there may be a gap between the terminal 101 and the slot 301 in both the front-back direction and the left-right direction. That is, the terminal 101 is easy to deform in the circumferential and radial directions of the annular bracket 102. This gives the terminal 101 the ability to deform in the circumferential and radial directions, i.e., flexibility, and also makes it easy for the terminal 101 to be accurately aligned with the female end opening to meet the assembly requirements of the terminal 101 and the female end.

[0079] Reference Figure 5 As shown, it can be understood that the terminal 101 is provided with a support protrusion 501, and the strip-shaped bracket 103 is correspondingly provided with a limiting groove 201 for accommodating the support protrusion 501 (see reference). Figure 2 As shown, the limiting groove 201 is located at the entrance of the slot 301. During the assembly process, the support protrusion 501 will be embedded in the limiting groove 201. When the terminal 101 is subjected to pressure, the support protrusion 501 can play a supporting role, thereby preventing the terminal 101 from becoming unstable and deformed due to local stress concentration.

[0080] Specifically, the limiting groove 201 is disposed on at least one side of the slot 301 along the width direction of the terminal 101. By disposing the limiting groove 201 on at least one side of the slot 301 along the width direction of the terminal 101, the support protrusion 501 is also disposed on at least one side of the width direction of the terminal 101, facilitating the direct integral forming of the support protrusion 501 and the terminal 101 using stamping, thereby simplifying the processing technology of the terminal 101. Furthermore, the symmetrical arrangement of two limiting grooves 201 on both sides of the slot 301 along the width direction of the terminal 101, and the symmetrical arrangement of two support protrusions 501 on both sides of the width direction of the terminal 101, promotes balanced force distribution on the terminal 101, thereby improving the stability of the terminal 101.

[0081] The gap between terminal 101 and slot 301 along the thickness direction of terminal 101 is denoted as the first gap (not shown in the figure), and the gap between support protrusion 501 and limiting groove 201 along the thickness direction of terminal 101 is denoted as the second gap (not shown in the figure). It can be understood that the depth of limiting groove 201 along the thickness direction of terminal 101 can be set to be less than the depth of slot 301 along the thickness direction of terminal 101, then the width of the first gap is greater than the width of the second gap.

[0082] The first gap is relatively large, which is conducive to better deformation of the terminal 101 in the radial, circumferential and axial directions of the annular bracket 102, while the second gap is relatively small, which is conducive to preventing the first connecting section 401 from bending and becoming unstable and deformed when subjected to pressure.

[0083] Understandably, the power supply female terminal is generally equipped with a socket, which is connected to terminal 101 via a plug-in method. When terminal 101 is inserted into the socket, terminal 101 and the power supply female terminal make physical contact, thereby achieving electrical connection. The power supply female terminal can be located on the motor controller.

[0084] Reference Figure 5As shown, it can be understood that terminal 101 has a plug-in portion 502 that mates with the power female terminal. The shape of the plug-in portion 502 and the socket of the power female terminal can be designed as needed. For example, the plug-in portion 502 has a relief groove 503, so that the plug-in portion 502 includes two inserts arranged side by side and spaced apart from each other. At the same time, protrusions 504 are provided on both sides of the width direction of the plug-in portion 502, and corresponding grooves or support points are provided in the socket. During the process of inserting terminal 101 into the power female terminal, the two inserts can elastically deform and move closer to each other, which facilitates the quick insertion of terminal 101. When the inserts are inserted into place, the protrusions 504 are locked in the corresponding grooves, or cross the corresponding support points and abut against the support points, which can effectively prevent terminal 101 from detaching from the power female terminal. Alternatively, the plug-in portion 502 is a general rectangular plate structure, and the socket is a corresponding rectangular hole.

[0085] Reference Figure 1 and Figure 2 As shown, the frame is provided with multiple hooks 105, and at least one hook 105 has a deformation groove 107, which is used to allow the hook 105 to undergo elastic deformation. The multiple hooks 105 on the frame facilitate the snap-fit ​​between the busbar and the stator's insulating frame (not shown in the figure), thereby achieving assembly. The deformation groove 107 in at least one hook 105 facilitates elastic deformation of the hook 105 during assembly with the insulating frame, reducing assembly difficulty and improving stability after assembly.

[0086] Understandably, the frame is equipped with three hooks 105, which are arranged at intervals along the circumference of the annular support 102. Two of the hooks 105 have deformation grooves 107, while the third hook 105 does not. The hook 105 without the deformation groove 107 serves a positioning function, ensuring the relative position of the busbar and the insulating frame and improving installation accuracy. The two hooks 105 with the deformation groove 107 are used to eliminate the mating gap between the busbar and the insulating frame, preventing the busbar from rotating along the circumference of the annular support 102 and improving the stability of the busbar.

[0087] Specifically, the hook 105 includes a fixing part 108, a hooking part 109, and a transition part 110. The fixing part 108 is connected to the frame and is arranged radially along the annular bracket 102. The hooking part 109 is arranged axially along the annular bracket 102. One end of the transition part 110 is connected to the fixing part 108, and the other end is connected to the hooking part 109.

[0088] Reference Figure 1 , Figure 2 , Figure 5 and Figure 6As shown, the wiring assembly includes a main body (not shown) and a connecting part. The main body is embedded within the annular bracket 102. The connecting part is connected to the main body and protrudes from the frame, located on the outside of the frame. The connecting part includes multiple hooks 104, which are divided into radial hooks and circumferential hooks. The radial hooks are located at the lower end of the terminals 101, and their openings are arranged radially along the annular bracket 102. The multiple circumferential hooks are located circumferentially along the annular bracket 102, between two different types of terminals 101, and their openings are arranged circumferentially along the annular bracket 102.

[0089] In related technologies, the openings of the hooks 104 are all arranged circumferentially along the annular support 102, meaning there are only circumferential hooks. This results in a small space between adjacent hooks 104. Since the hooks 104 also need to be welded to the enameled wire, during welding, the two electrodes contact the two side walls of the hooks 104 respectively for welding. Because some hooks 104 are located at the lower end of the strip support 103, the presence of the strip support 103 creates an obstacle, affecting resistance welding.

[0090] In this solution, by setting the opening of the radial hook to be radially arranged along the annular bracket 102, the space between two adjacent radial hooks is increased, thereby increasing the welding space and facilitating welding operations.

[0091] Reference Figures 1 to 9 As shown, it can be understood that the main body is provided with a welding part 106 for welding to the terminal 101. The welding part 106 extends upward and protrudes to form a protrusion, so that the terminal 101 and the welding part 106 have a larger welding space, which facilitates the welding operation.

[0092] Reference Figure 5 and Figure 6 As shown, it can be understood that the wiring assembly includes multiple busbars arranged radially stacked along the annular support 102.

[0093] In related technologies, the wiring assembly includes multiple busbars, which are stacked along the axial direction of the annular bracket 102. This results in the wiring assembly occupying a large space in both the axial and radial directions and requiring a large amount of material.

[0094] In this solution, by stacking multiple busbars radially along the annular support 102, this arrangement can reduce the axial space occupied, making the structure more compact and saving materials.

[0095] It is understood that the busbar can be a copper busbar. The following description takes the wiring assembly as an example, which includes multiple copper busbars arranged radially along the annular bracket 102.

[0096] Reference Figure 6As shown, it can be understood that the wiring assembly includes four layers of copper busbars, namely, the wiring assembly includes a first layer of copper busbar 601, a second layer of copper busbar 602, a third layer of copper busbar 603 and a fourth layer of copper busbar 604 arranged sequentially from the inside to the outside, and the first layer of copper busbar 601, the second layer of copper busbar 602, the third layer of copper busbar 603 and the fourth layer of copper busbar 604 are stacked on top of each other to form a ring structure.

[0097] Reference Figure 6 As shown, the wiring assembly includes multiple hooks 104, which are respectively connected to the bottom of the first copper busbar 601, the second copper busbar 602, the third copper busbar 603, and the fourth copper busbar 604, and extend radially outward along the annular bracket 102 to the outside of the fourth copper busbar 604. The multiple hooks 104 are arranged circumferentially along the annular bracket 102. The upper part of the first copper busbar 601, the second copper busbar 602, and the third copper busbar 603 is provided with a welding part 106 for welding to the terminal 101. The welding part 106 is arranged axially along the annular bracket 102, that is, the welding part 106 is arranged upward. Compared to related technologies where the hook 104 and the welding part 106 are arranged on the same side, the solution in this embodiment arranges the hook 104 and the welding part 106 on opposite sides. This is beneficial for the multiple hooks 104 at the bottom to be evenly arranged without being restricted by the welding part 106. Similarly, the welding part 106 at the top can also be arranged at any angle without being restricted by the hook 104.

[0098] Reference Figure 6 As shown, it can be understood that the welded portion 106 includes a first weld protrusion and a second weld protrusion. (Refer to...) Figure 7 As shown, the first weld protrusion includes a first weld segment 705 disposed axially along the annular support 102. (Refer to...) Figure 8 As shown, the second welding protrusion includes a second welding section 805 and a bent section 806. The second welding section 805 is arranged along the axial direction of the annular bracket 102. The first welding section 705 and the second welding section 805 are offset from the first connecting section 401 in the circumferential direction of the annular bracket 102. One end of the bent section 806 is connected to the second welding section 805, and the other end of the bent section 806 is connected to the copper busbar. Furthermore, both the first welding section 705 and the second welding section 805 are located above the same copper busbar; in the radial direction of the annular bracket 102, the bent section 806 is located outside the second welding section 805.

[0099] Specifically, refer to Figures 6 to 9As shown, a first welding protrusion is provided on the first layer copper busbar 601, that is, the first welding segment 705 is connected to the first layer copper busbar 601. A second welding protrusion is provided on the second layer copper busbar 602 and the third layer copper busbar 603. The bending segment 806 extends from the second layer copper busbar 602 and the third layer copper busbar 603 toward the first layer copper busbar 601, so that the second welding segment 805 is located above the first layer copper busbar 601. Thus, the first welding segment 705 and the second welding segment 805 are both located above the first layer copper busbar 601, that is, the first welding segment 705 and the second welding segment 805 are both located above the innermost copper busbar of the wiring assembly.

[0100] Reference Figure 4 and Figure 5 As shown, during assembly, the third connecting section 403 is located above the second layer copper busbar 602 and is welded to the first welding section 705 and the second welding section 805 located above the first layer copper busbar 601. The hook 104 is used to connect the terminals 1514 of multiple windings of the motor stator that need to be connected together, and the welding part 106 achieves electrical connection between these terminals 1514 and the terminals 101, realizing the busbar function. Multiple terminals 101 are connected to multiple copper busbars, and each terminal 101 is electrically connected to the corresponding terminal 1514 connected to the copper busbar. Multiple terminals 101 are connected to the power supply busbar to form an electrical circuit, supplying power to the multiple windings of the motor stator.

[0101] It is understandable that the arrangement of the first and second welding protrusions can be replaced by other schemes. For example, the second copper busbar 602 is provided with the first welding protrusion, that is, the first welding segment 705 is connected to the second copper busbar 602. The first copper busbar 601 and the third copper busbar 603 are both provided with the second welding protrusion. The bent segment 806 extends from the first copper busbar 601 and the third copper busbar 603 to the second copper busbar 602, so that the second welding segment 805 is located above the second copper busbar 602. Thus, the first welding segment 705 and the second welding segment 805 are both located above the second copper busbar 602, that is, the first welding segment 705 and the second welding segment 805 are both located above the copper busbar of the second inner ring of the wiring assembly.

[0102] It should be noted that one arrangement of the first welding segment 705 and the second welding segment 805 is that, radially in the annular support 102, both the first welding segment 705 and the second welding segment 805 are located inside the third connecting segment 403, that is, on the side of the third connecting segment 403 closest to the center of the annular support 102. Another arrangement is that, radially in the annular support 102, both the first welding segment 705 and the second welding segment 805 are located outside the third connecting segment 403, that is, on the side of the third connecting segment 403 furthest from the center of the annular support 102. A third arrangement is that, radially in the annular support 102, the first welding segment 705 and the second welding segment 805 are located on opposite sides of the third connecting segment 403. For example, the first welding segment 705 is located inside the third connecting segment 403, and the second welding segment 805 is located outside the third connecting segment 403. That is, the first welding segment 705 is located on the side of the third connecting segment 403 closer to the center of the annular support 102, and the second welding segment 805 is located on the side of the third connecting segment 403 away from the center of the annular support 102. Alternatively, the first welding segment 705 may be located outside the third connecting segment 403, and the second welding segment 805 may be located inside the third connecting segment 403. That is, the first welding segment 705 is located on the side of the third connecting segment 403 away from the center of the annular support 102, and the second welding segment 805 is located on the side of the third connecting segment 403 closer to the center of the annular support 102.

[0103] In the second arrangement, both the first welding segment 705 and the second welding segment 805 are located outside the third connecting segment 403, meaning they are on the side of the third connecting segment 403 closest to the slot 301. When the terminal 101 is inserted into the slot 301, the third connecting segment 403 is easily obstructed by these two segments, affecting normal assembly. The first arrangement, compared to the second, has the advantage that when the terminal 101 is inserted into the slot 301, both the first welding segment 705 and the second welding segment 805 are located inside the third connecting segment 403, meaning they are on the side of the third connecting segment 403 furthest from the slot 301. This allows the third connecting segment 403 to avoid the first welding segment 705 and the second welding segment 805, facilitating installation.

[0104] Since the first welding segment 705 and the second welding segment 805 of the third arrangement are located on opposite sides of the third connecting segment 403, that is, one is located on the side of the third connecting segment 403 closer to the slot 301 and the other is located on the side of the third connecting segment 403 further away from the slot 301, in addition to the disadvantage of inconvenient installation as in the second arrangement, the welding positions are different, requiring the use of different welding equipment, which increases the processing difficulty and cost.

[0105] Reference Figure 5 and Figure 6 As shown, it can be understood that in this embodiment of the invention, both the first welding segment 705 and the second welding segment 805 are located above the first layer of copper busbar 601, that is, both the first welding segment 705 and the second welding segment 805 are located above the innermost copper busbar of the wiring assembly. This represents the first arrangement of the first welding segment 705 and the second welding segment 805. The advantage of this arrangement is that when the terminal 101 is inserted into the slot 301, it facilitates the mating of the third connecting segment 403 with the first welding segment 705 and the second welding segment 805. Simultaneously, since both the first welding segment 705 and the second welding segment 805 are located above the innermost copper busbar of the wiring assembly, meaning there is a relatively long distance between the first connecting segment 401 and the third connecting segment 403, the length of the second connecting segment 402 can be ensured to be relatively long. This allows for a sufficiently long mating surface between the second connecting segment 402 and the first positioning groove 303, thereby improving the stability of the positioning. In addition, it can also ensure that the welding points of the third connecting section 403 and the first welding section 705 and the second welding section 805 are further apart from the first connecting section 401, thereby ensuring that the welding equipment has sufficient welding space and reducing the possibility of interference during welding.

[0106] Reference Figure 6 and Figure 7 As shown, it can be understood that the first copper busbar 601 is located in the innermost ring of the wiring assembly, and the first copper busbar 601 consists of two separate parts.

[0107] Specifically, the first layer of copper busbar 601 includes independent first arc-shaped units 702 and second arc-shaped units 703. The first arc-shaped unit 702 is connected to two hooks 104 and a welded portion 106. The two hooks 104 are located at opposite ends of the first arc-shaped unit 702 in the circumferential direction, and the welded portion 106 is located at one end of the first arc-shaped unit 702. More specifically, the two hooks 104 connected to the first arc-shaped unit 702 are radial hooks, and the welded portion 106 connected to the first arc-shaped unit 702 is a first welded protrusion. Both radial hooks are connected to the first arc-shaped unit 702 via a first connecting strip 701.

[0108] In addition, the second arc-shaped unit 703 is connected to two hooks 104 and a welded part 106. The two hooks 104 are located at both ends of the second arc-shaped unit 703 in the circumferential direction, and the welded part 106 is located near the end of the second arc-shaped unit 703. More specifically, the two hooks 104 connected to the second arc-shaped unit 703 are both radial hooks, and the welded part 106 connected to the second arc-shaped unit 703 is a first welded protrusion. Both radial hooks are connected to the second arc-shaped unit 703 via a second connecting strip 704.

[0109] Reference Figure 6 and Figure 8 As shown, it can be understood that the second copper busbar 602 is located in the innermost ring of the wiring assembly, and the second copper busbar 602 consists of two separate parts.

[0110] Specifically, the second layer of copper busbar 602 includes two independent third arc-shaped units 802 and fourth arc-shaped units 803. The third arc-shaped unit 802 is connected to two hooks 104 and a welded portion 106. The two hooks 104 are located at opposite ends of the circumference of the third arc-shaped unit 802, and the welded portion 106 is located in the middle of the third arc-shaped unit 802. More specifically, the two hooks 104 connected to the third arc-shaped unit 802 are a radial hook and a circumferential hook, respectively, and the welded portion 106 connected to the third arc-shaped unit 802 is a second welded protrusion. Both the radial hook and the circumferential hook are connected to the third arc-shaped unit 802 via a third connecting strip 801.

[0111] In addition, the fourth arc-shaped unit 803 is connected to two hooks 104 and a welded part 106. The two hooks 104 are located at the two ends of the fourth arc-shaped unit 803 in the circumferential direction, and the welded part 106 is located in the middle of the fourth arc-shaped unit 803. More specifically, the two hooks 104 connected to the fourth arc-shaped unit 803 are a radial hook and a circumferential hook, respectively, and the welded part 106 connected to the fourth arc-shaped unit 803 is a second welded protrusion. Both the radial hook and the circumferential hook are connected to the fourth arc-shaped unit 803 via a fourth connecting strip 804.

[0112] Reference Figure 6 and Figure 9 As shown, it can be understood that the third copper busbar 603 is located in the outermost ring of the wiring assembly, and the third copper busbar 603 consists of two separate parts.

[0113] Specifically, the third layer of copper busbar 603 includes two independent fifth arc-shaped units 902 and sixth arc-shaped units 903. The fifth arc-shaped unit 902 is connected to two hooks 104 and a welded part 106. The two hooks 104 are located at opposite ends of the fifth arc-shaped unit 902 in the circumferential direction, and the welded part 106 is located near the end of the fifth arc-shaped unit 902. More specifically, both hooks 104 connected to the fifth arc-shaped unit 902 are circumferential hooks, and the welded part 106 connected to the fifth arc-shaped unit 902 is a second welded protrusion. Both circumferential hooks are connected to the fifth arc-shaped unit 902 via a fifth connecting strip 901.

[0114] In addition, the sixth arc-shaped unit 903 is connected to two hooks 104 and a welded part 106. The two hooks 104 are located at the two ends of the circumference of the sixth arc-shaped unit 903, and the welded part 106 is located near the end of the sixth arc-shaped unit 903. More specifically, the two hooks 104 connected to the sixth arc-shaped unit 903 are both circumferential hooks, and the welded part 106 connected to the sixth arc-shaped unit 903 is a second welded protrusion. Both circumferential hooks are connected to the sixth arc-shaped unit 903 via a sixth connecting strip 904.

[0115] Reference Figure 6 and Figure 10 As shown, it can be understood that the fourth copper busbar 604 is located on the outermost ring of the wiring assembly, and the fourth copper busbar 604 consists of two separate parts.

[0116] Specifically, the fourth layer of copper busbar 604 includes two independent arc-shaped units 1002 and 1003. Six hooks 104 are connected to the seventh arc-shaped unit 1002, spaced circumferentially around its outer periphery. One hook 104 is located at one end of the seventh arc-shaped unit 1002, and another hook 104 is located at the other end. More specifically, the six hooks 104 consist of two radial hooks and four circumferential hooks. One radial hook is located at one end of the seventh arc-shaped unit 1002, one circumferential hook is located at the other end, another radial hook is located near the circumferential hook at the end of the seventh arc-shaped unit 1002, and the other three circumferential hooks are spaced apart between the two radial hooks. Both the radial and circumferential hooks are connected to the seventh arc-shaped unit 1002 via a seventh connecting strip 1001.

[0117] In addition, six hooks 104 are connected to the eighth arc-shaped unit 1003. These six hooks 104 are spaced apart circumferentially on the outer periphery of the eighth arc-shaped unit 1003, with one hook 104 located at one end and the other at the other end. More specifically, the six hooks 104 consist of one radial hook and five circumferential hooks. Three circumferential hooks are located on one side of the radial hook, and two circumferential hooks are located on the other side. Both the radial and circumferential hooks are connected to the eighth arc-shaped unit 1003 via an eighth connecting strip 1004.

[0118] Reference Figures 6 to 10 As shown, it can be understood that the first arc-shaped unit 702, the third arc-shaped unit 802, the fifth arc-shaped unit 902, and the seventh arc-shaped unit 1002 are located on one side, while the second arc-shaped unit 703, the fourth arc-shaped unit 803, the sixth arc-shaped unit 903, and the eighth arc-shaped unit 1003 are located on the opposite side. The first arc-shaped unit 702, the third arc-shaped unit 802, and the fifth arc-shaped unit 902 are staggered in a counterclockwise direction, while the second arc-shaped unit 703, the fourth arc-shaped unit 803, and the sixth arc-shaped unit 903 are staggered in a clockwise direction.

[0119] The third arc-shaped unit 802 partially surrounds the first arc-shaped unit 702, the fifth arc-shaped unit 902 partially surrounds the third arc-shaped unit 802, the seventh arc-shaped unit 1002 surrounds the first arc-shaped unit 702 and the third arc-shaped unit 802, and partially surrounds the fifth arc-shaped unit 902; the fourth arc-shaped unit 803 partially surrounds the second arc-shaped unit 703, the sixth arc-shaped unit 903 partially surrounds the fourth arc-shaped unit 803, and the eighth arc-shaped unit 1003 surrounds the fourth arc-shaped unit 803 and the sixth arc-shaped unit 903, and partially surrounds the second arc-shaped unit 703.

[0120] That is, the first arc-shaped unit 702 can be partially projected onto the third arc-shaped unit 802 along the radial direction of the annular support 102, and the first arc-shaped unit 702 and the third arc-shaped unit 802 partially overlap in the radial direction of the annular support 102; the third arc-shaped unit 802 can be partially projected onto the fifth arc-shaped unit 902 along the radial direction of the annular support 102, and the third arc-shaped unit 802 and the fifth arc-shaped unit 902 partially overlap in the radial direction of the annular support 102; the first arc-shaped unit 702 and the third arc-shaped unit 802 can be partially projected onto the fifth arc-shaped unit 902 along ..., and the third arc-shaped unit 802 and the fifth arc-shaped unit 902 partially overlap in the radial direction of the annular support 102; the first arc-shaped unit 702 and the third arc-shaped unit 802 can be partially projected onto the fifth arc-shaped unit 902 along the radial direction of the annular support 102, and the third arc-shaped unit 802 and the fifth arc-shaped unit 902 can be partially projected onto the fifth arc-shaped unit 902 along the radial direction of the annular support 102, and the third arc-shaped unit 702 and the fifth arc-shaped unit 902 can be partially projected onto the fifth arc-shaped unit 902. The three arc-shaped unit 802 can be completely projected onto the seventh arc-shaped unit 1002 along the radial direction of the annular support 102. The first arc-shaped unit 702 and the third arc-shaped unit 802 overlap the seventh arc-shaped unit 1002 in the radial direction of the annular support 102. The fifth arc-shaped unit 902 can be partially projected onto the seventh arc-shaped unit 1002 along the radial direction of the annular support 102. The fifth arc-shaped unit 902 and the seventh arc-shaped unit 1002 partially overlap in the radial direction of the annular support 102.

[0121] The second arc-shaped unit 703 can be partially projected onto the fourth arc-shaped unit 803 along the radial direction of the annular support 102, and the second arc-shaped unit 703 and the fourth arc-shaped unit 803 partially overlap in the radial direction of the annular support 102; the fourth arc-shaped unit 803 can be partially projected onto the sixth arc-shaped unit 903 along the radial direction of the annular support 102, and the fourth arc-shaped unit 803 and the sixth arc-shaped unit 903 partially overlap in the radial direction of the annular support 102; the fourth arc-shaped unit 803 and the sixth arc-shaped unit 903... The arc-shaped unit 903 can be fully projected onto the eighth arc-shaped unit 1003 along the radial direction of the annular support 102. The fourth arc-shaped unit 803 and the sixth arc-shaped unit 903 overlap the eighth arc-shaped unit 1003 in the radial direction of the annular support 102. The second arc-shaped unit 703 can be partially projected onto the eighth arc-shaped unit 1003 along the radial direction of the annular support 102. The second arc-shaped unit 703 and the eighth arc-shaped unit 1003 partially overlap in the radial direction of the annular support 102.

[0122] With this design, gaps exist in the wiring components in the circumferential direction of the ring-shaped bracket 102. That is, the combination of the first layer copper busbar 601, the second layer copper busbar 602, the third layer copper busbar 603, and the fourth layer copper busbar 604 is not a dense ring structure. The first arc unit 702, the second arc unit 703, the third arc unit 802, the fourth arc unit 803, the fifth arc unit 902, the sixth arc unit 903, the seventh arc unit 1002, and the eighth arc unit 1003 are not complete semi-arcs. Therefore, the combination of the first arc unit 702 and the second arc unit 703 does not form a complete ring. Similarly, the combination of the third arc unit 802 and the fourth arc unit 803, the fifth arc unit 902 and the sixth arc unit 903, and the seventh arc unit 1002 and the eighth arc unit 1003 does not form a complete ring. This reduces the material required for the copper busbar in the circumferential direction, saves copper busbar material, and reduces costs.

[0123] Reference Figure 6 As shown, it can be understood that the first layer copper busbar 601, the second layer copper busbar 602, the third layer copper busbar 603, and the fourth layer copper busbar 604 are staggered in the circumferential direction, with the longer fourth layer copper busbar 604 located on the outer side. It can also be understood that since the first layer copper busbar 601 is located in the innermost circle, in order to ensure that all radial hooks remain aligned in the circumferential direction, and to ensure that all circumferential hooks remain aligned in the circumferential direction, the first connecting strip 701 and the second connecting strip 704, which connect the innermost first arc-shaped unit 702 and the radial hooks, are the longest. Similarly, the third connecting strip 801 and the fourth connecting strip 804 are the second longest, the fifth connecting strip 901 and the sixth connecting strip 904 are the third longest, and the seventh connecting strip 1001 and the eighth connecting strip 1004 are the shortest. Therefore, the fourth layer copper busbar 604 has the largest total number of radial and circumferential hooks, but the seventh connecting bar 1001 and the eighth connecting bar 1004 are the shortest, thus saving materials. That is, the number of hooks 104 set on the outer layer copper busbar is more than the number of hooks 104 set on the inner layer copper busbar, which can reduce the length required for connecting hooks 104, thereby saving materials.

[0124] It is understood that the busbar of this embodiment of the invention can be applied to a three-phase motor. In this case, the hook 104 is divided into a neutral hook, a U-phase hook, a V-phase hook, and a W-phase hook. That is, the wiring assembly includes multiple neutral hooks, multiple U-phase hooks, multiple V-phase hooks, and multiple W-phase hooks. The multiple neutral hooks, multiple U-phase hooks, multiple V-phase hooks, and multiple W-phase hooks are arranged circumferentially along the ring bracket 102, and are continuously arranged in a clockwise or counterclockwise direction in the order of U-phase hook to V-phase hook, and then to W-phase hook. A neutral hook is provided between adjacent U-phase hooks and V-phase hooks, a neutral hook is provided between adjacent V-phase hooks and W-phase hooks, and a neutral hook is provided between adjacent W-phase hooks and U-phase hooks.

[0125] Reference Figures 6 to 10 As shown, it can be understood that the hooks 104 on the first layer copper busbar 601 are W-phase hooks, the hooks 104 on the second layer copper busbar 602 are V-phase hooks, the hooks 104 on the third layer copper busbar 603 are U-phase hooks, and the hooks 104 on the fourth layer copper busbar 604 are neutral hooks. This design maximizes the number of neutral hooks, and since the neutral hooks are located on the outermost fourth layer copper busbar 604, the length of the seventh connecting strip 1001 and the eighth connecting strip 1004 required to connect the neutral hooks can be reduced, thus saving materials.

[0126] Understandably, other alternatives can be used. For example, the hook 104 on the first copper busbar 601 can be a U-phase hook, the hook 104 on the second copper busbar 602 can be a V-phase hook, the hook 104 on the third copper busbar 603 can be a W-phase hook, and the hook 104 on the fourth copper busbar 604 can be a neutral hook. Alternatively, the hook 104 on the first copper busbar 601 can be a neutral hook, the hook 104 on the second copper busbar 602 can be a V-phase hook, the hook 104 on the third copper busbar 603 can be a U-phase hook, and the hook 104 on the fourth copper busbar 604 can be a W-phase hook.

[0127] It should be noted that the above wiring assembly includes four layers of copper busbars, and the number of radial hooks and circumferential hooks provided on each layer of copper busbars is only used to illustrate one way of implementing the wiring assembly including multiple copper busbars arranged radially along the annular bracket 102, and should not be construed as a specific limitation of this solution.

[0128] Figure 11 Another bus structure according to embodiments of the present invention is provided. Figure 11 The bus structure shown is similar to Figure 1 The main difference in the bus structure shown is that, Figure 1 The busbar structure shown has 24 hooks 104, while Figure 11The busbar structure shown is a busbar with 12 hooks 104.

[0129] Reference Figure 11 and Figure 12 As shown, it can be understood that the bus includes terminals 101, wiring assemblies, and a frame. The frame includes an annular support 102 and multiple strip supports 103. The multiple strip supports 103 are connected to the annular support 102. The strip supports 103 are provided with slots 301 for accommodating some of the terminals 101. The slots 301 are provided with clearance notches 302 for one end of the terminal 101 to pass through, so that one end of the terminal 101 protrudes from the slot 301. The protruding end of the terminal 101 from the slot 301 is connected to the wiring assembly.

[0130] Reference Figure 11 and Figure 12 As shown, the annular bracket 102 is provided with a first positioning groove 303 and a second positioning groove 304. The clearance notch 302 is positioned towards the first positioning groove 303. Both the first positioning groove 303 and the second positioning groove 304 are used to position the terminal 101. The first positioning groove 303 is positioned along a first direction, and the second positioning groove 304 is positioned along a second direction. The first direction and the second direction are not the same and are not parallel, and have an included angle greater than ° and less than °. That is, by positioning the terminal 101 in different directions, the first positioning groove 303 and the second positioning groove 304 make the positional accuracy of the terminal 101 higher and the positioning effect better.

[0131] The first direction is the radial direction of the annular bracket 102, and the second direction is the circumferential direction of the annular bracket 102. That is, the first direction and the second direction are perpendicular to each other. The terminal 101 is limited in the radial and circumferential directions of the annular bracket 102, so that the terminal 101 is subjected to more uniform force and is not easy to deviate.

[0132] Terminal 101 includes a first connecting segment 401, a second connecting segment 402, and a third connecting segment 403. The first connecting segment 401 is accommodated in a slot 301, the second connecting segment 402 is accommodated in a first positioning groove 303, and the third connecting segment 403 is accommodated in a second positioning groove 304. One end of the second connecting segment 402 is bent and connected to the first connecting segment 401, and the other end of the second connecting segment 402 is bent and connected to the third connecting segment 403.

[0133] Reference Figure 13 and Figure 14 As shown, it can be understood that the wiring assembly includes four layers of copper busbars, namely, the wiring assembly includes a first layer of copper busbar 601, a second layer of copper busbar 602, a third layer of copper busbar 603 and a fourth layer of copper busbar 604 arranged sequentially from the inside to the outside, and the first layer of copper busbar 601, the second layer of copper busbar 602, the third layer of copper busbar 603 and the fourth layer of copper busbar 604 are stacked on top of each other to form a ring structure.

[0134] Understandably, the first copper busbar 601 is located in the innermost ring of the wiring assembly, and the first copper busbar 601 consists of two separate parts.

[0135] Specifically, the first layer of copper busbar 601 includes a first arc-shaped unit 702 and a second arc-shaped unit 703 that are independent of each other. The first arc-shaped unit 702 is connected to a hook 104 and a welded part 106. The hook 104 is located at one end of the first arc-shaped unit 702 in the circumferential direction near the second arc-shaped unit 703, and the welded part 106 is located at the other end of the first arc-shaped unit 702 in the circumferential direction. The hook 104 is connected to the first arc-shaped unit 702 through a first connecting strip 701.

[0136] Additionally, a hook 104 and a welded part 106 are connected to the second arc-shaped unit 703. The hook 104 is located at one end of the second arc-shaped unit 703 in the circumferential direction, closer to the first arc-shaped unit 702, and the welded part 106 is located at the other end of the second arc-shaped unit 703 in the circumferential direction. The hook 104 is connected to the second arc-shaped unit 703 via a second connecting strip 704.

[0137] Understandably, the second copper busbar 602 is located in the innermost ring of the wiring assembly, and the second copper busbar 602 consists of two separate parts.

[0138] Specifically, the second layer of copper busbar 602 includes two independent arc-shaped units 802 and 803. The third arc-shaped unit 802 is connected to a hook 104 and a welded part 106. The hook 104 is located at the circumferential end of the third arc-shaped unit 802 near the first arc-shaped unit 702, and the welded part 106 is located in the middle of the third arc-shaped unit 802. The hook 104 is connected to the third arc-shaped unit 802 via a third connecting strip 801.

[0139] Additionally, a hook 104 and a welded part 106 are connected to the fourth arc-shaped unit 803. The hook 104 is located at one end of the fourth arc-shaped unit 803 in the circumferential direction, closer to the second arc-shaped unit 703, and the welded part 106 is located at the other end of the fourth arc-shaped unit 803 in the circumferential direction. The hook 104 is connected to the fourth arc-shaped unit 803 via a fourth connecting strip 804.

[0140] Understandably, the third copper busbar 603 is located in the outermost ring of the wiring assembly, and the third copper busbar 603 consists of two separate parts.

[0141] Specifically, the third layer of copper busbar 603 includes two independent arc-shaped units 902 and 903. The fifth arc-shaped unit 902 is connected to a hook 104 and a welded part 106. The hook 104 is located at one end of the fifth arc-shaped unit 902 in the circumferential direction, closer to the third arc-shaped unit 802, and the welded part 106 is located at the other end of the fifth arc-shaped unit 902 in the circumferential direction. The hook 104 is connected to the fifth arc-shaped unit 902 via a fifth connecting strip 901.

[0142] Additionally, a hook 104 and a welded part 106 are connected to the sixth arc-shaped unit 903. The hook 104 is located at one end of the sixth arc-shaped unit 903 in the circumferential direction, closer to the second arc-shaped unit 703, and the welded part 106 is located at the other end of the sixth arc-shaped unit 903 in the circumferential direction. The hook 104 is connected to the sixth arc-shaped unit 903 via a sixth connecting strip 904.

[0143] Understandably, the fourth copper busbar 604 is located on the outermost ring of the wiring assembly, and the fourth copper busbar 604 consists of two separate parts.

[0144] Specifically, the fourth layer copper busbar 604 includes two independent arc-shaped units 1002 and 1003. Three hooks 104 are connected to the seventh arc-shaped unit 1002. These three hooks 104 are spaced apart circumferentially on the outer periphery of the seventh arc-shaped unit 1002. One hook 104 is located at one end of the seventh arc-shaped unit 1002, another at the other end, and the third in the middle. All three hooks 104 are connected to the seventh arc-shaped unit 1002 via a seventh connecting strip 1001.

[0145] In addition, three hooks 104 are connected to the eighth arc-shaped unit 1003. The three hooks 104 are spaced apart circumferentially on the outer periphery of the eighth arc-shaped unit 1003. One hook 104 is located at one end of the eighth arc-shaped unit 1003, one hook 104 is located at the other end of the eighth arc-shaped unit 1003, and one hook 104 is located in the middle of the eighth arc-shaped unit 1003. All three hooks 104 are connected to the eighth arc-shaped unit 1003 through the eighth connecting strip 1004.

[0146] Reference Figure 14As shown, it can be understood that the first arc-shaped unit 702, the third arc-shaped unit 802, the fifth arc-shaped unit 902, and the seventh arc-shaped unit 1002 are located on one side, while the second arc-shaped unit 703, the fourth arc-shaped unit 803, the sixth arc-shaped unit 903, and the eighth arc-shaped unit 1003 are located on the opposite side. The first arc-shaped unit 702, the third arc-shaped unit 802, and the fifth arc-shaped unit 902 are staggered in a clockwise direction, while the second arc-shaped unit 703, the fourth arc-shaped unit 803, and the sixth arc-shaped unit 903 are staggered in a counterclockwise direction.

[0147] It is understandable that the first arc-shaped unit 702 and the third arc-shaped unit 802 are spaced apart in the circumferential direction, the fifth arc-shaped unit partially surrounds the third arc-shaped unit 802, and the seventh arc-shaped unit 1002 partially surrounds the fifth arc-shaped unit; the second arc-shaped unit 703 and the fourth arc-shaped unit 803 are spaced apart in the circumferential direction, the sixth arc-shaped unit 903 partially surrounds the fourth arc-shaped unit 803, and the eighth arc-shaped unit 1003 partially surrounds the sixth arc-shaped unit 903.

[0148] With this design, gaps exist in the wiring components in the circumferential direction of the ring-shaped bracket 102. That is, the combination of the first layer copper busbar 601, the second layer copper busbar 602, the third layer copper busbar 603, and the fourth layer copper busbar 604 is not a dense ring structure. The first arc unit 702, the second arc unit 703, the third arc unit 802, the fourth arc unit 803, the fifth arc unit 902, the sixth arc unit 903, the seventh arc unit 1002, and the eighth arc unit 1003 are not complete semi-arcs. Therefore, the combination of the first arc unit 702 and the second arc unit 703 does not form a complete ring. Similarly, the combination of the third arc unit 802 and the fourth arc unit 803, the fifth arc unit 902 and the sixth arc unit 903, and the seventh arc unit 1002 and the eighth arc unit 1003 does not form a complete ring. This reduces the material required for the copper busbar in the circumferential direction, saves copper busbar material, and reduces costs.

[0149] It is understandable that the first layer copper busbar 601, the second layer copper busbar 602, the third layer copper busbar 603, and the fourth layer copper busbar 604 are staggered in the circumferential direction, with the longer fourth layer copper busbar 604 located on the outer side. It is also understandable that, since the first layer copper busbar 601 is located in the innermost circle, in order to ensure that all radial hooks remain aligned circumferentially, and to ensure that all circumferential hooks remain aligned circumferentially, the first connecting strip 701 and the second connecting strip 704, which connect the innermost first arc-shaped unit 702 and the radial hooks, are the longest. Similarly, the third connecting strip 801 and the fourth connecting strip 804 are the second longest, the fifth connecting strip 901 and the sixth connecting strip 904 are the third longest, and the seventh connecting strip 1001 and the eighth connecting strip 1004 are the shortest. Therefore, the fourth layer copper busbar 604 has the largest total number of radial and circumferential hooks, but the seventh connecting bar 1001 and the eighth connecting bar 1004 are the shortest, thus saving materials. That is, the number of hooks 104 set on the outer layer copper busbar is more than the number of hooks 104 set on the inner layer copper busbar, which can reduce the length required for connecting hooks 104, thereby saving materials.

[0150] The stator of the second aspect embodiment of the present invention includes the bus of the first aspect embodiment of the present invention. Since the stator of the second aspect embodiment of the present invention includes the bus of any of the first aspect embodiments, it possesses all the beneficial effects of any of the above embodiments, which will not be repeated here.

[0151] Specifically, the stator includes an iron core unit, an insulating frame disposed on the iron core unit, and a coil winding 1513 wound on the insulating frame.

[0152] Reference Figure 15 As shown, the stator comprises 12 core units, which are assembled to form a ring structure. Each core unit has a separate set of coil windings 1513 wound around its outer periphery. Each set of coil windings 1513 has two terminals 1514, meaning each set of coil windings 1513 has an inlet terminal and an outlet terminal. The busbar includes a wiring assembly, which has hooks 104 that connect to the terminals 1514. The number of hooks 104 is equal to the number of terminals 1514. Figure 15 The stator shown uses a single-winding design.

[0153] More specifically, Figure 16 The 12 core units shown are numbered sequentially from core unit 1 (1501) to core unit 12 (1512) in a counterclockwise direction. Core unit 1 (1501) has a single enameled wire wound around its outer periphery to form a coil winding 1513, and so on.

[0154] It is understandable that the statement that a set of coil windings 1513 is wound around the outer periphery of the core unit means that the coil windings 1513 are wound on the insulating frame around the outer periphery of the core unit.

[0155] Figure 15 The stator shown has 24 terminals 1514, while Figure 1 The busbar shown has 24 hooks 104, that is Figure 1 The bus shown is Figure 15 The stator shown can be used in conjunction with other components.

[0156] Reference Figure 16 As shown, the stator comprises 12 core units, which are assembled to form a ring structure. In every four consecutive core units, the two core units at both ends are wound with the same set of coil windings 1513. Each set of coil windings 1513 has two terminals 1514. The busbar includes a wiring assembly, which has hooks 104 that connect to the terminals 1514. The number of hooks 104 is equal to the number of terminals 1514. Figure 16 The stator shown uses a continuous winding scheme.

[0157] It is understandable that the fact that the two core units are wound with the same set of coil windings 1513 means that the coil windings 1513 are wound on the insulating frame around the two core units.

[0158] More specifically, Figure 16 The 12 core units shown are numbered sequentially from core unit 1501 to core unit 1512 in a counterclockwise direction. Core unit 1501 and core unit 4504 share a single enameled wire wound into a coil winding 1513, and the two core units are connected by the same coil winding 1513. Similarly, core unit 2 (1502) and core unit 11 (1511) share a single enameled wire to form a coil winding 1513; core unit 3 (1503) and core unit 6 (1506) share a single enameled wire to form a coil winding 1513; core unit 5 (1505) and core unit 8 (1508) share a single enameled wire to form a coil winding 1513; core unit 7 (1507) and core unit 10 (1510) share a single enameled wire to form a coil winding 1513; and core unit 9 (1509) and core unit 12 (1512) share a single enameled wire to form a coil winding 1513.

[0159] Understandably, another possible winding scheme is that core unit 1 (1501) and core unit 4 (1504) share a single enameled wire to form a coil winding 1513; core unit 2 (1502) and core unit 5 (1505) share a single enameled wire to form a coil winding 1513; core unit 3 (1503) and core unit 6 (1506) share a single enameled wire to form a coil winding 1513; core unit 7 (1507) and core unit 10 (1510) share a single enameled wire to form a coil winding 1513; core unit 8 (1508) and core unit 11 (1511) share a single enameled wire to form a coil winding 1513; and core unit 9 (1509) and core unit 12 (1512) share a single enameled wire to form a coil winding 1513.

[0160] Figure 16 The stator shown has 12 terminals 1514, while Figure 11 The busbar shown has 12 hooks 104, that is Figure 11 The bus shown is Figure 16 The stator shown can be used in conjunction with other components.

[0161] The motor (not shown in the figures) according to a third aspect embodiment of the present invention includes the stator of the second aspect embodiment of the present invention. Since the motor of the third aspect embodiment of the present invention includes the stator of any of the embodiments of the second aspect, it possesses all the beneficial effects of any of the above embodiments, which will not be repeated here.

[0162] It is understandable that an electric motor uses the stator windings to generate a rotating magnetic field, which acts on the rotor to form a magnetoelectric torque, thereby causing the motor to rotate. In the stator, the iron core unit cooperates with the insulating frame, and wires are wound on the insulating frame and the leads are connected to the busbar. The busbar is fixed in the fastening groove at the upper end of the insulating frame by the hook 105 at the bottom of the busbar.

[0163] The electric power steering system (not shown in the figures) of the fourth aspect embodiment of the present invention includes the motor of the third aspect embodiment. Since the electric power steering system of the fourth aspect embodiment includes the motor of the third aspect embodiment, it possesses all the beneficial effects of any of the above embodiments, which will not be repeated here.

[0164] It should be noted that Electric Power Steering (EPS) is a power steering system that directly relies on an electric motor to provide auxiliary torque. Compared with the traditional Hydraulic Power Steering (HPS) system, EPS has many advantages, such as reduced fuel consumption, enhanced steering follow-through, improved steering return characteristics, improved handling stability, variable steering assistance, simple system structure, small footprint, and good assembly line compatibility. The EPS system mainly consists of a torque sensor, vehicle speed sensor, reduction gear, electronic control unit, and, in this embodiment, the electric motor.

[0165] The vehicle (not shown) according to the fifth aspect embodiment of the present invention includes the electric power steering system of the fourth aspect embodiment of the present invention. Since the vehicle of the fifth aspect embodiment of the present invention includes the electric power steering system of the fourth aspect embodiment, it possesses all the beneficial effects of any of the above embodiments, which will not be repeated here.

[0166] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A busbar, characterized in that, include: Terminals, including a first connecting segment and a second connecting segment that are interconnected; The skeleton includes a ring-shaped support and a strip-shaped support. The strip-shaped support is connected to the ring-shaped support and is arranged along the axial direction of the ring-shaped support. The ring-shaped support is provided with a first positioning groove for positioning the second connecting segment. The strip-shaped support is provided with a slot for accommodating a portion of the first connecting segment. The slot is provided with a clearance notch facing the first positioning groove. A portion of the second connecting segment passes through the clearance notch. The annular bracket is further provided with a second positioning groove, and the terminal further includes a third connecting segment accommodated in the second positioning groove. The width of the first connecting segment is greater than the width of the second connecting segment and the third connecting segment. The third connecting segment is connected to the second connecting segment. The first positioning groove is arranged along a first direction, and the second positioning groove is arranged along a second direction. The first direction is the radial direction of the annular bracket, and the second direction is the circumferential direction of the annular bracket.

2. The busbar according to claim 1, characterized in that, The depth of the slot along the thickness direction of the first connecting segment is greater than the thickness of the first connecting segment; the width of the slot along the width direction of the first connecting segment is greater than the width of the first connecting segment.

3. The busbar according to claim 1, characterized in that, The first connecting section is provided with a support protrusion, and the strip-shaped bracket is provided with a limiting groove for accommodating the support protrusion. The limiting groove is located at one end of the strip-shaped bracket opposite to the first positioning groove.

4. The busbar according to claim 1, characterized in that, The busbar also includes a wiring assembly, which includes a main body and a connecting part. The main body is embedded in the annular bracket, and the connecting part is connected to the main body and protrudes out of the outer side of the frame. The connecting part includes a plurality of radial hooks located at the lower end of the terminal, and the openings of the radial hooks are arranged radially along the annular bracket.

5. The busbar according to claim 1, characterized in that, The busbar also includes a wiring assembly, which includes a plurality of busbars stacked radially along the annular bracket. The bottom of the plurality of busbars is connected to a plurality of hooks, which are located on the outer periphery of the annular bracket. The upper part of the plurality of busbars is provided with a welding part for welding to the terminal, which is arranged axially along the annular bracket.

6. The busbar according to claim 5, characterized in that, The welded portion includes a first welding protrusion and a second welding protrusion. The first welding protrusion includes a first welding segment arranged along the axial direction of the annular bracket. The second welding protrusion includes a second welding segment and a bent segment. The second welding segment is arranged along the axial direction of the annular bracket. The first welding segment and the second welding segment are offset from the first connecting segment in the circumferential direction of the annular bracket. One end of the bent segment is connected to the second welding segment, and the other end is connected to the busbar. The first welding segment and the second welding segment are both located above the same busbar. In the radial direction of the annular bracket, the bent segment is located at the end of the second welding segment closer to the strip bracket.

7. The busbar according to claim 1, characterized in that, The busbar also includes a wiring assembly, which includes an outer busbar and an inner busbar. The outer busbar and the inner busbar are stacked radially along the annular support. Both the outer busbar and the inner busbar are provided with multiple hooks, and the number of hooks on the outer busbar is greater than the number of hooks on the inner busbar.

8. The busbar according to claim 1, characterized in that, The busbar also includes a wiring assembly, which comprises a first layer of busbars, a second layer of busbars, a third layer of busbars, and a fourth layer of busbars arranged concentrically from the inside out. The first layer of busbars includes independent first and second arc-shaped units. The second layer of busbars includes independent third and fourth arc-shaped units. The third layer of busbars includes independent fifth and sixth arc-shaped units. The fourth layer of busbars includes independent seventh and eighth arc-shaped units. The first, third, fifth, and seventh arc-shaped units are located on the same side, and are staggered in a counterclockwise direction. The third arc-shaped unit partially surrounds the first arc-shaped unit, the fifth arc-shaped unit partially surrounds the third arc-shaped unit, and the seventh arc-shaped unit surrounds the first and third arc-shaped units and partially surrounds the fifth arc-shaped unit. The second arc-shaped unit, the fourth arc-shaped unit, the sixth arc-shaped unit, and the eighth arc-shaped unit are located on the other side, and the second arc-shaped unit, the fourth arc-shaped unit, and the sixth arc-shaped unit are staggered in a clockwise direction; the fourth arc-shaped unit partially surrounds the second arc-shaped unit, the sixth arc-shaped unit partially surrounds the fourth arc-shaped unit, and the eighth arc-shaped unit surrounds the fourth arc-shaped unit and the sixth arc-shaped unit, and partially surrounds the second arc-shaped unit.

9. The busbar according to claim 1, characterized in that, The busbar also includes a wiring assembly, which comprises a first layer of busbars, a second layer of busbars, a third layer of busbars, and a fourth layer of busbars arranged concentrically from the inside out. The first layer of busbars includes independent first and second arc-shaped units, the second layer of busbars includes independent third and fourth arc-shaped units, the third layer of busbars includes independent fifth and sixth arc-shaped units, and the fourth layer of busbars includes independent seventh and eighth arc-shaped units. The first, third, fifth, and seventh arc-shaped units are located on the same side and are staggered in a clockwise direction. The first and third arc-shaped units are spaced apart circumferentially along the annular support, the fifth arc-shaped unit partially surrounds the third arc-shaped unit, and the seventh arc-shaped unit partially surrounds the fifth arc-shaped unit. The second arc-shaped unit, the fourth arc-shaped unit, the sixth arc-shaped unit, and the eighth arc-shaped unit are located on the other side and are staggered in a counterclockwise direction. The second arc-shaped unit and the fourth arc-shaped unit are spaced apart along the circumference of the ring-shaped bracket. The sixth arc-shaped unit partially surrounds the fourth arc-shaped unit, and the eighth arc-shaped unit partially surrounds the sixth arc-shaped unit.

10. The busbar according to claim 1, characterized in that, The busbar also includes a wiring assembly, which includes a plurality of neutral hooks, a plurality of U-phase hooks, a plurality of V-phase hooks and a plurality of W-phase hooks. The U-phase hooks, the V-phase hooks and the W-phase hooks are arranged in a circumferential manner. The neutral hook is provided between adjacent U-phase hooks and V-phase hooks, between adjacent V-phase hooks and W-phase hooks, and between adjacent W-phase hooks and U-phase hooks.

11. A stator, characterized in that, Includes the bus as described in any one of claims 1 to 10.

12. The stator according to claim 11, characterized in that, The stator includes multiple core units, which are spliced ​​together to form a ring structure. Each core unit has a set of coil windings wound around its outer periphery. Each set of coil windings has two terminals. The busbar includes a wiring assembly, which has multiple hooks that connect to the terminals. The number of hooks is equal to the number of terminals.

13. The stator according to claim 11, characterized in that, The stator includes multiple core units, which are spliced ​​together to form a ring structure. In every four consecutive core units, the outer periphery of the two core units at both ends is wound with the same set of coil windings. Each set of coil windings is provided with two terminals. The busbar includes a wiring assembly, which is provided with multiple hooks that connect to the terminals. The number of hooks is equal to the number of terminals.

14. An electric motor, characterized in that, Includes the stator as described in any one of claims 11 to 13.

15. An electric power steering system, characterized in that, Includes the motor as described in claim 14.

16. A vehicle, characterized in that, Includes the electric power steering system as described in claim 15.

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