Electric motor, electric power steering system and vehicle

Abstract

Embodiments of the present application provide an electric machine, an electric power steering system and a vehicle, the electric machine comprising a busbar, the busbar comprising a busbar assembly, the busbar assembly comprising: a busbar framework; at least four busbar strips, which are spaced apart on the busbar framework, a part of each busbar strip being exposed from the busbar framework, each busbar strip comprising at least two busbar segments which are spaced apart in a circumferential direction; wherein the at least two busbar segments in one busbar strip are of the same structure. In the production and processing of the busbar, the at least two busbar segments of the same structure in one busbar strip can be processed and produced by using the same set of molds, thereby effectively reducing the manufacturing cost of the molds, and further reducing the production cost of the busbar with the busbar assembly. Moreover, the processing difficulty of the molds can also be effectively reduced, further reducing the production cost of the busbar and improving the utilization rate of materials. Furthermore, the batch production of the busbar strips is also facilitated, thereby effectively improving the production efficiency of the product.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of motor technology, and more specifically, to a motor, an electric power steering system, and a vehicle. Background Technology

[0002] Currently, motor stators in related technologies generally have multiple windings, each winding has two terminals: a start end and an end end. The start and end ends of different windings need to be interconnected according to product requirements to ensure normal motor operation, making the wiring method quite complex. Summary of the Invention

[0003] The embodiments of the present invention are intended to at least solve one of the technical problems existing in the prior art.

[0004] Therefore, a first aspect of the embodiments of the present invention provides a bus component.

[0005] A second aspect of the present invention provides a bus.

[0006] A third aspect of the present invention provides an electric motor.

[0007] A fourth aspect of the present invention provides an electric power steering system.

[0008] A fifth aspect of the present invention provides a vehicle.

[0009] In view of the above, according to a first aspect of the present invention, a bus assembly is provided for a busbar, the bus assembly comprising: a busbar frame; at least four busbars spaced apart on the busbar frame, a portion of each busbar being exposed outside the busbar frame, each busbar including at least two bus segments spaced apart circumferentially; wherein at least two bus segments in a busbar have identical structures.

[0010] The busbar assembly provided in this embodiment of the invention includes a busbar frame and at least four busbars. Specifically, at least four busbars are spaced apart on the busbar frame, and a portion of each busbar is exposed outside the busbar frame. It is understood that the motor includes a stator, which includes multiple stator windings. Each stator winding includes two terminals, and each terminal is connected to a portion of the exposed busbar in the busbar frame. Furthermore, the busbar also includes a terminal assembly, which includes multiple terminals. A portion of each terminal is connected to another portion of the exposed busbar in the busbar frame. One end of each terminal is used to connect to an external power source. Thus, the busbar enables electrical connection between multiple stator windings and an external power source, forming an electrical circuit to supply power to the multiple stator windings and achieving the busbar function. Moreover, by setting up the busbar and using the busbars to electrically connect to the stator winding terminals, it is not necessary to directly connect the corresponding terminals, which effectively reduces wiring difficulty and improves product production efficiency.

[0011] The busbar frame can be molded in one piece using injection molding, which can provide fixed support for multiple busbars. The busbar frame is supported by insulating material, which insulates the multiple busbars from each other, ensuring the operational stability and reliability of the motor with this busbar.

[0012] Each busbar includes at least two circumferentially spaced bus segments, wherein at least two bus segments in a busbar have identical structures. During the manufacturing process of the busbar, the at least two structurally identical bus segments in a busbar can be produced using the same set of molds, effectively reducing mold manufacturing costs and thus lowering the production cost of the busbar with this busbar assembly. Furthermore, the identical structure of at least two bus segments in a busbar means that splitting a busbar into multiple structurally identical bus segments for processing further reduces the difficulty of mold processing, further lowering the production cost of the busbar and improving material utilization. Moreover, it facilitates mass production of the busbar, thereby effectively improving product production efficiency.

[0013] It is worth noting that at least four busbars are spaced apart on the busbar frame. Specifically, the at least four busbars can be spaced apart radially or axially on the busbar frame, depending on actual needs. It is understandable that having at least four busbars spaced apart axially on the busbar frame helps reduce the radial dimension of the busbar assembly, thereby reducing the space occupied by the busbar and facilitating the miniaturization of the motor with the busbar.

[0014] The busbar is made of copper, which has excellent electrical conductivity, facilitating electrical connections between the busbar assembly and the stator windings, or between the busbar assembly and the terminal assembly. Furthermore, copper busbars are easy to stamp and form, and are relatively inexpensive.

[0015] In practical applications, the busbar with this bus component is used in a 12-slot motor. This means that the stator core of the motor has 12 stator teeth, with each adjacent tooth forming a stator slot. Each stator tooth corresponds to a stator frame on which a stator winding is wound. Each stator winding includes two terminals, meaning 12 stator windings are required, resulting in 24 terminals. Each terminal is electrically connected to a portion of the busbar exposed on the busbar frame.

[0016] The 24 terminals can be connected in a Y-type wiring configuration. Specifically, 12 terminals form a group, and every two terminals in each group are connected in parallel to form a phase, resulting in a 3-phase motor including U, V, and W phases. Two groups of terminals thus form a dual 3-phase 6-phase motor. The Y-type wiring configuration of the motor is achieved through a busbar structure.

[0017] In addition, the bus assembly provided by the above-described technical solution of the present invention also has the following additional technical features:

[0018] In one possible design, at least four busbars include at least three phase busbars and a neutral busbar, with at least two phase busbars having identical structures.

[0019] In this design, at least four busbars are defined, including at least three phase busbars and a neutral busbar. Specifically, at least three phase busbars are electrically connected to multiple terminals of the busbar terminal assembly. The phase busbars and the neutral busbars are each provided with multiple welding hooks for welding to the stator winding terminals. Since the phase busbars need to be provided with connection parts for electrical connection to the terminals, the number of welding hooks provided on the phase busbars is limited, while the neutral busbars can be provided with a larger number of welding hooks. In other words, by providing neutral busbars, the number of welding hooks can be increased compared to a busbar assembly with only phase busbars. The larger number of welding hooks can be electrically connected to more terminals, which is beneficial for realizing multi-phase parallel connection of motors, thereby forming a multi-phase circuit.

[0020] At least two of the at least three phase-type busbars have identical structures. This means that the busbar segments are phase-type busbar segments, implying that at least four phase-type busbar segments have identical structures. During the busbar manufacturing process, these at least four phase-type busbar segments can be produced using the same set of molds, further reducing mold manufacturing costs and significantly lowering the production cost of busbars with this component, while improving material utilization. Furthermore, this facilitates mass production of the phase-type busbars, thereby effectively improving product manufacturing efficiency.

[0021] Among them, at least three phase busbars have the same structure, that is, all phase busbar segments in the busbar assembly have the same structure, which further reduces the manufacturing cost of the mold, significantly reduces the production cost of the busbar with the busbar assembly, improves the utilization rate of materials, and improves the production efficiency of the product.

[0022] In one possible design, at least four busbars are spaced apart along the axial direction of the busbar frame.

[0023] In this design, at least four busbars are spaced apart along the axial direction of the busbar frame, which facilitates the welding of the busbars to the terminals and stator winding terminals. It also helps to reduce the radial dimension of the busbar assembly, thereby reducing the space occupied by the busbar with the busbar assembly and facilitating the miniaturization of the motor with the busbar.

[0024] In one possible design, each busbar section includes a main body and multiple welding hooks, wherein the main body is disposed within the busbar frame, and the multiple welding hooks are spaced apart circumferentially on the main body, with the first end of the welding hook connected to the main body and the second end of the welding hook exposed outside the busbar frame.

[0025] In this design, each busbar segment is defined as including a main body and multiple welding hooks. Specifically, the main body is located within the busbar frame. It is understood that placing the main body within the busbar frame after injection molding facilitates the fixing of the busbars, ensures mutual insulation between multiple busbars, and improves the reliability of the busbar with this busbar assembly. Multiple welding hooks are circumferentially spaced on the main body, with one end of each hook connected to the main body and the second end exposed outside the busbar frame. The stator winding terminals are welded to the exposed second ends of the welding hooks, achieving electrical connection between the stator windings and the busbars.

[0026] It should be noted that the welding hook and the main body are an integral structure. This integral structure provides superior mechanical properties, thus increasing the connection strength between the welding hook and the main body. This, in turn, improves the connection stability between the welding hook and the stator winding terminals, enhancing the stability and reliability of the motor operation. Furthermore, the integral structure facilitates mass production of the busbar, further reducing the production cost of the busbar assembly.

[0027] In practical applications, the busbar with this bus assembly is used in a 12-slot motor. A 12-slot motor means that the motor's stator core has 12 stator teeth, with each adjacent tooth forming a stator slot. Each stator tooth corresponds to a stator frame on which a stator winding is wound. Each stator winding includes two terminals, meaning 12 stator windings are required, resulting in 24 terminals. Each terminal is electrically connected to a welding hook via welding. Therefore, the busbar assembly includes 24 welding hooks, with each welding hook corresponding to a terminal. The angle between the line connecting two adjacent welding hooks and the center of the busbar frame is 15°.

[0028] In one possible design, the multiple welding hooks include multiple first welding hooks and multiple second welding hooks, with the multiple first welding hooks located on the main body of the phase busbar and the multiple second welding hooks located on the main body of the neutral busbar; wherein the open ends of the first welding hooks and the open ends of the second welding hooks face opposite directions.

[0029] In this design, multiple welding hooks are defined, including multiple first welding hooks and multiple second welding hooks. Specifically, at least four busbars are defined, including at least three phase busbars and one neutral busbar. The main body of the phase busbar is the phase main body, and the main body of the neutral busbar is the neutral main body. Multiple first welding hooks are connected to the phase main body, and multiple second welding hooks are connected to the neutral main body. The opening ends of the first welding hooks and the opening ends of the second welding hooks face opposite directions. That is, the first welding hooks are set on the outer wall surface of the phase main body, and the second welding hooks are set on the inner wall surface of the neutral main body, or the first welding hooks are set on the inner wall surface of the phase main body, and the second welding hooks are set on the outer wall surface of the neutral main body. The specific arrangement can be determined according to actual needs. By distributing the welding hooks connected to the stator winding terminals inside and outside, the spacing between two adjacent welding hooks inside or outside can be increased, thereby increasing the welding space between the welding hooks and the terminals, facilitating welding operations, and also increasing the installation space inside the busbar, reducing the installation difficulty of the busbar and the stator frame, and improving the installation efficiency of the motor stator.

[0030] In one possible design, each of the at least two bus segments of the phase busbar is a phase busbar segment, the main body of each phase busbar segment is a phase main body, and a plurality of first welding hooks are provided on the phase main body; each phase busbar segment also includes a connecting part, the first end of the connecting part is connected to the phase main body, the second end of the connecting part is exposed outside the busbar frame, and the connecting part is used to connect to the terminal assembly of the busbar.

[0031] In this design, each of the at least two bus segments of the phase busbar is a phase busbar segment, and correspondingly, each of the at least two bus segments of the neutral busbar is a neutral busbar segment. The main body of each phase busbar segment is a phase main body, and the main body of each neutral busbar segment is a neutral main body. Multiple first welding hooks are disposed on the phase main body, and multiple second welding hooks are disposed on the neutral main body. Furthermore, each phase busbar segment also includes a connecting portion, wherein a first end of the connecting portion is connected to the phase main body, and a second end of the connecting portion is exposed outside the busbar frame. The second end of the connecting portion exposed outside the busbar frame is used to connect to a terminal, thereby achieving an electrical connection between the busbar assembly and the terminal assembly.

[0032] The connecting part extends in a direction away from the center of the busbar frame. In other words, the second end of the connecting part exposed on the busbar frame extends outward, which facilitates the welding operation between the connecting part and the terminal, thereby improving the production efficiency of the product.

[0033] It should be noted that at least three phase busbars include two sets of phase busbar segments that are centrally symmetrical with respect to the center of the busbar frame. Each set of phase busbar segments is distributed at intervals along the axial direction. The angle between the connection between two adjacent phase busbar segments in each set and the line connecting the center of the busbar frame is 30°.

[0034] For example, at least three phase busbars include a first-phase copper busbar, a second-phase copper busbar, and a third-phase copper busbar, which are distributed sequentially and alternately along the axial direction. The neutral busbar includes a neutral point copper busbar, which is positioned close to the third-phase copper busbar. That is, along the axial direction, the first-phase copper busbar, the second-phase copper busbar, the third-phase copper busbar, and the neutral point copper busbar are arranged sequentially and alternately. The neutral point copper busbar is rotated 15° to 25° relative to the third-phase copper busbar.

[0035] In practical applications, the motor includes a control board, a phase busbar connecting part electrically connected to one end of a terminal, and the other end of the terminal connected to the control board. The control board is connected to an external power source to form an electrical circuit, thereby supplying power to the stator windings of the motor and realizing the busbar function.

[0036] In one possible design, the busbar assembly further includes a plurality of first connectors, which are circumferentially spaced on the outer peripheral wall of the busbar frame and are used to connect to the stator frame of the motor.

[0037] In this design, the busbar assembly includes multiple first connectors. Specifically, these first connectors are spaced circumferentially on the outer peripheral wall of the busbar frame. By using these multiple first connectors, the busbar assembly can be connected to the motor stator frame; that is, the busbar assembly is connected to the motor stator via these first connectors. It is understandable that when the multiple first connectors are distributed circumferentially, they need to be positioned to avoid interference with the welding hooks and connecting parts. This prevents interference with the welding hooks and connecting parts, which would increase the welding difficulty between the welding hooks and stator winding terminals, and between the connecting parts and terminals, thus further improving product manufacturing efficiency.

[0038] It should be noted that the multiple first connectors and the busbar frame are injection molded in one piece, that is, the multiple first connectors and the busbar frame are an integral structure, which can effectively improve the connection strength between the multiple first connectors and the busbar frame, thereby ensuring the connection stability between the busbar assembly and the stator frame of the motor and improving the reliability of motor operation.

[0039] In practical applications, the first connector can be a hook, which enables a detachable connection with the stator frame by means of multiple hooks, ensuring connection stability during connection and facilitating disassembly.

[0040] It is worth noting that the number of first connectors can be set according to actual needs. It is understandable that a larger number of first connectors can improve the connection effect between the busbar assembly and the stator frame, but the number of first connectors should not be too many. Too many first connectors can easily interfere with the position of the connection part or the weld hook. Specifically, the number of first connectors can be 4.

[0041] According to a second aspect of the present invention, a bus is provided, comprising a bus component as provided by any of the above-described technical solutions, and thus possessing all the beneficial technical effects of the bus component, which will not be elaborated further here.

[0042] Furthermore, the bus also includes a terminal assembly connected to the bus assembly. The terminal assembly includes multiple terminals, with a first end of one terminal connected to a connection portion of the bus assembly, and a second end of each terminal used for connecting to a power source.

[0043] The busbar provided in this embodiment of the invention includes a busbar assembly and a terminal assembly. Specifically, the terminal assembly has multiple terminals, each terminal including a first end and a second end. The first end of one terminal is electrically connected to a connecting part, and the second end of one terminal is used to connect to a power source, thereby forming an electrical circuit to supply power to the electronic stator winding. In specific applications, the motor also includes a control board, which is electrically connected to an external power source. The second end of the terminal is connected to the control board; that is, the second end of the terminal is connected to the power source through the control board. By setting up a busbar, the busbar is electrically connected to the stator winding terminals, eliminating the need to directly connect the corresponding terminals, effectively reducing wiring difficulty and improving product production efficiency.

[0044] Specifically, the bus assembly includes multiple bus bars, which include at least three phase bus bars and one neutral bus bar. The bus segment of the phase bus bar is a phase bus bar, which includes a phase body and a connecting part, wherein one connecting part is electrically connected to the second end of a terminal.

[0045] Each busbar includes at least two circumferentially spaced bus segments, wherein at least two bus segments in a busbar have identical structures. During the manufacturing process of the busbar, the at least two structurally identical bus segments in a busbar can be produced using the same set of molds, effectively reducing mold manufacturing costs and thus lowering the production cost of the busbar with this busbar assembly. Furthermore, the identical structure of at least two bus segments in a busbar means that splitting a busbar into multiple structurally identical bus segments for processing further reduces the difficulty of mold processing, further lowering the production cost of the busbar and improving material utilization. Moreover, it facilitates mass production of the busbar, thereby effectively improving product production efficiency.

[0046] In addition, the bus provided by the above-described technical solution of the present invention also has the following additional technical features:

[0047] In one possible design, the terminal assembly also includes a terminal frame connected to a busbar frame, with multiple terminals disposed on the terminal frame, a portion of each terminal exposed outside the terminal frame.

[0048] In this design, the terminal assembly also includes a terminal frame. Specifically, the terminal frame is connected to the busbar frame, and multiple terminals are mounted on the terminal frame, with a portion of each terminal exposed outside the frame. This allows the terminals to connect to the connection points of the phase busbar and the motor control board, respectively. In other words, multiple terminals are mounted and fixed using the terminal frame. Specifically, the terminal frame can be integrally injection molded, or it can be injection molded and then assembled with the terminals, depending on actual needs. By using the terminal frame to fix the multiple terminals, it effectively prevents terminal movement and deformation, providing effective support and fixation, and ensuring the stability of the connection between the terminals and the phase busbar and the motor control board.

[0049] It is understandable that the terminal frame is made of insulating material. By setting the terminal frame, not only can multiple terminals be supported and fixed, but also the mutual insulation between multiple terminals can be achieved, further improving the operating stability of the motor with this bus.

[0050] In one possible design, the terminal assembly also includes a clearance groove disposed on the terminal frame and located between two adjacent terminals, with the groove opening located on the side opposite to the central axis of the busbar frame.

[0051] In this design, the terminal assembly is also defined as including a clearance groove. Specifically, a clearance groove is provided between two adjacent terminals on the terminal frame. It is understood that the clearance groove is located above the welding hook. By setting the clearance groove, it is easier to cut the wire after welding the stator winding terminal to the welding hook, thereby further improving the production efficiency of the product.

[0052] Specifically, the busbar frame of the busbar assembly is connected to the terminal frame of the terminal assembly, and the connecting part is connected to the terminal. The terminal frame partially obstructs the welding hook located below it, making wire cutting inconvenient after welding the stator winding terminals to the welding hook. By setting a clearance groove between two adjacent terminals and above the corresponding welding hook, wire cutting is facilitated after welding the stator winding terminals to the welding hook, thereby further improving production efficiency. Furthermore, the opening of the clearance groove is located on the side opposite to the central axis of the busbar frame, further facilitating wire cutting and improving production efficiency.

[0053] In one possible design, a portion of the terminal near the first end of the terminal is bent to form a clearance area.

[0054] In this design, a portion of the terminal near its first end is bent to form a clearance area. Since the first end of the terminal connects to the phase busbar connection, bending the portion of the terminal near the connection point to form this clearance area facilitates welding operations between the terminal and the connection, thereby improving production efficiency. Furthermore, after bending the terminal to form the clearance area, the end of the terminal connected to the phase busbar connection forms a connecting wall, with the connecting arm extending radially along the busbar frame, further facilitating welding operations between the connection and the terminal. Moreover, increasing the contact area between the terminal and the connection improves the connection strength, further enhancing the stability and reliability of motor operation.

[0055] In one possible design, the busbar frame has multiple second connectors on the side facing the terminal frame, and the terminal frame has multiple connection holes, with each second connector being adapted to one connection hole.

[0056] In this design, the busbar frame is provided with multiple second connectors on the side facing the terminal frame, and the terminal frame is provided with multiple connection holes, each connection hole being adapted to a second connector. In other words, the busbar frame and the terminal frame are fixedly connected through multiple connection holes and multiple second connectors.

[0057] Specifically, the second connector can be an inverted buckle, which is inserted into the connection hole to achieve a fixed connection between the busbar frame and the terminal frame.

[0058] In addition, the second connector can also be made of a molten material. After the second connector passes through the connection hole, a portion of the second connector will protrude. The protruding portion is heated and melted, and after cooling, the busbar frame and the terminal frame are fixedly connected, ensuring the connection effect between the busbar assembly and the terminal assembly.

[0059] According to a third aspect of the present invention, an electric motor is provided, comprising a bus as provided by any of the above-described technical solutions, and thus possessing all the beneficial technical effects of the bus, which will not be repeated here.

[0060] Furthermore, the motor also includes a stator frame with multiple slots, each slot being adapted to a first connector of the busbar assembly. The stator core is disposed on the stator frame, and the stator winding is wound on the stator frame. The stator winding includes terminals that are connected to the welding hooks of the busbar assembly.

[0061] The motor provided in this embodiment of the invention includes a busbar, a stator frame, a stator core, and stator windings. Specifically, the stator core is disposed on the stator frame, and the stator windings are wound on the stator frame. Each stator winding includes two terminals, each of which is electrically connected to a welding hook of the busbar assembly. Furthermore, the busbar also includes a terminal assembly, wherein the terminal assembly includes multiple terminals, a portion of which is connected to a connection portion of the busbar assembly, and one end of each terminal is used to connect to an external power source. That is, the busbar enables multiple stator windings to be electrically connected to an external power source, forming an electrical circuit to supply power to multiple stator windings, thus realizing the busbar function. Moreover, by setting up the busbar and using the busbar strip to electrically connect to the stator winding terminals, it is not necessary to directly connect the corresponding terminals, which can effectively reduce wiring difficulty and improve product production efficiency.

[0062] Furthermore, the stator frame is provided with multiple slots, each slot being adapted to a first connector. In other words, the stator and the busbar are connected through multiple first connectors and multiple slots.

[0063] In practical applications, this motor is a 12-slot motor. This means the motor's stator core has 12 stator teeth, with each adjacent tooth forming a stator slot. Each tooth corresponds to a stator frame on which a stator winding is wound. Each stator winding includes two terminals, meaning 12 stator windings are required, resulting in 24 terminals. Each terminal is electrically connected to a welding hook via welding.

[0064] The 24 terminals can be connected in a Y-type wiring configuration. Specifically, 12 terminals form a group, and every two terminals in each group are connected in parallel to form a phase, resulting in a 3-phase motor including U, V, and W phases. Two groups of terminals thus form a dual 3-phase 6-phase motor. The Y-type wiring configuration of the motor is achieved through a busbar structure.

[0065] According to a fourth aspect of the present invention, an electric power steering system is provided, comprising a motor as provided in any of the above-described technical solutions, and thus possessing all the beneficial technical effects of the motor, which will not be elaborated further here.

[0066] According to a fifth aspect of the present invention, a vehicle is provided that includes an electric power steering system as provided by any of the above-described technical solutions, and thus possesses all the beneficial technical effects of the electric power steering system, which will not be elaborated further here.

[0067] It is worth noting that the vehicles can be either traditional gasoline-powered vehicles or new energy vehicles. New energy vehicles include pure electric vehicles, range-extended electric vehicles, hybrid electric vehicles, fuel cell electric vehicles, and hydrogen engine vehicles.

[0068] Additional aspects and advantages of the invention will be set forth 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

[0069] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0070] Figure 1 A schematic diagram of the phase-type busbar section according to an embodiment of the present invention is shown;

[0071] Figure 2 A schematic diagram of the structure of a neutral busbar section according to an embodiment of the present invention is shown;

[0072] Figure 3 One of the structural schematic diagrams of a phase busbar according to an embodiment of the present invention is shown;

[0073] Figure 4 A second schematic diagram of the phase busbar according to an embodiment of the present invention is shown;

[0074] Figure 5 A third schematic diagram of the phase busbar according to an embodiment of the present invention is shown;

[0075] Figure 6 A schematic diagram of the structure of a busbar according to an embodiment of the present invention is shown;

[0076] Figure 7 One of the structural schematic diagrams of a bus assembly according to an embodiment of the present invention is shown;

[0077] Figure 8 One of the schematic diagrams of a bus structure according to an embodiment of the present invention is shown;

[0078] Figure 9 One of the structural schematic diagrams of a terminal assembly according to an embodiment of the present invention is shown;

[0079] Figure 10 A second schematic diagram of the structure of a terminal assembly according to an embodiment of the present invention is shown;

[0080] Figure 11 One of the structural schematic diagrams of a terminal according to an embodiment of the present invention is shown;

[0081] Figure 12 One of the schematic diagrams of a motor according to an embodiment of the present invention is shown;

[0082] Figure 13A second schematic diagram of the structure of a motor according to an embodiment of the present invention is shown;

[0083] Figure 14 A second schematic diagram of a busbar assembly according to an embodiment of the present invention is shown;

[0084] Figure 15 A second schematic diagram of a busbar structure according to an embodiment of the present invention is shown;

[0085] Figure 16 A third schematic diagram of the structure of a terminal assembly according to an embodiment of the present invention is shown;

[0086] Figure 17 A fourth schematic diagram of the structure of a terminal assembly according to an embodiment of the present invention is shown;

[0087] Figure 18 A second schematic diagram of the structure of a terminal according to an embodiment of the present invention is shown;

[0088] Figure 19 A third schematic diagram of the structure of a terminal according to an embodiment of the present invention is shown;

[0089] Figure 20 A third schematic diagram of the structure of a motor according to an embodiment of the present invention is shown;

[0090] Figure 21 A schematic diagram of the wiring method of a motor according to an embodiment of the present invention is shown.

[0091] in, Figures 1 to 21 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0092] 100 Busbar assembly, 110 Busbar frame, 111 Second connector, 120 Busbar strip, 122 Phase busbar strip, 1221 Phase busbar segment, 1221a Phase main body, 1221b Connecting part, 1221c First welding hook, 123 Neutral busbar strip, 1231 Neutral busbar segment, 1231a Neutral main body, 1231b Second welding hook, 130 First connector, 200 Busbar, 210 Terminal assembly, 211 Terminal, 2111 Clearance area, 212 Terminal frame, 2121 Connecting hole, 213 Clearance groove, 310 Stator frame, 320 Stator core, 331 Terminal. Detailed Implementation

[0093] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0094] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0095] The following reference Figures 1 to 21 This describes a bus assembly 100, a busbar 200, a motor, an electric power steering system, and a vehicle provided according to some embodiments of the present invention.

[0096] Example 1:

[0097] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, an embodiment of the first aspect of the present invention provides a busbar assembly 100 for a busbar 200. The busbar assembly 100 includes: a busbar frame 110; at least four busbars 120 spaced apart on the busbar frame 110, a portion of each busbar 120 being exposed outside the busbar frame 110, and each busbar 120 including at least two bus segments spaced apart circumferentially; wherein at least two bus segments in a busbar 120 have the same structure.

[0098] The busbar assembly 100 provided in this embodiment of the invention includes a busbar frame 110 and at least four busbars 120. Specifically, at least four busbars 120 are spaced apart on the busbar frame 110, and a portion of each busbar 120 is exposed outside the busbar frame 110. It is understood that the motor includes a stator, which includes multiple stator windings. Each stator winding includes two terminals 331, and each terminal 331 is connected to the portion of the busbar 120 exposed outside the busbar frame 110. Furthermore, the busbar 200 also includes a terminal assembly 210, which includes multiple terminals 211. A portion of each terminal 211 is connected to another portion of the busbar 120 exposed outside the busbar frame 110. One end of each terminal 211 is used to connect to an external power source. Thus, the busbar 200 enables electrical connection between multiple stator windings and an external power source, forming an electrical circuit to supply power to the multiple stator windings and achieve the busbar function. Furthermore, by setting up a busbar 200, the busbar 120 is electrically connected to the stator winding terminal 331, eliminating the need to directly connect the corresponding terminal 331, which can effectively reduce wiring difficulty and improve product production efficiency.

[0099] The busbar frame 110 can be integrally injection molded, thereby providing fixed support for multiple busbars 120. The busbar frame 110 is supported by insulating material, which ensures that the multiple busbars 120 are mutually insulated, thus ensuring the operational stability and reliability of the motor with the busbar 200.

[0100] Each busbar 120 includes at least two bus segments spaced circumferentially. At least two bus segments within a single busbar 120 have identical structures. During the manufacturing process of the busbar 200, these identical bus segments can be produced using the same set of molds, effectively reducing mold manufacturing costs and consequently lowering the production cost of the busbar 200 with the busbar assembly 100. Furthermore, the identical structures of at least two bus segments within a single busbar 120 mean that dividing a single busbar 120 into multiple identical bus segments for processing further reduces mold processing difficulty, further lowering the production cost of the busbar 200 and improving material utilization. Moreover, it facilitates mass production of the busbar 120, thereby effectively improving product manufacturing efficiency.

[0101] It is worth noting that at least four busbars 120 are spaced apart on the busbar frame 110. Specifically, the at least four busbars 120 can be spaced apart radially or axially on the busbar frame 110, depending on actual needs. It is understood that the axially spaced distribution of at least four busbars 120 on the busbar frame 110 helps reduce the radial dimension of the busbar assembly 100, thereby reducing the space occupied by the busbar 200 with the busbar assembly 100, and facilitating the miniaturization of the motor with the busbar 200.

[0102] The busbar 120 is made of copper. Copper has good electrical conductivity, which facilitates electrical connection between the busbar assembly 100 and the stator winding, or between the busbar assembly 100 and the terminal assembly 210. In addition, the copper busbar 120 is easy to stamp and form, and its price is relatively low.

[0103] In a specific application, the busbar 200 with the bus assembly 100 is used on a 12-slot motor. It is understood that a 12-slot motor means that the stator core 320 has 12 stator teeth, with a stator slot formed between two adjacent stator teeth. Each stator tooth corresponds to a stator frame 310 on which a stator winding is wound. Each stator winding includes two terminals 331, meaning that 12 stator windings are required, resulting in 24 terminals 331. Each terminal 331 is electrically connected to a portion of the busbar 120 exposed outside the busbar frame 110.

[0104] Among them, such as Figure 21 As shown, the 24 terminals 331 can be connected in a Y-type wiring configuration. Specifically, 12 terminals 331 form a group, and every two terminals in each group are connected in parallel to form a phase, resulting in a 3-phase motor including phases U, V, and W. The two groups of terminals 331 thus form a dual 3-phase 6-phase motor. The Y-type wiring configuration of the motor is achieved through the busbar 200 structure.

[0105] like Figure 6 As shown, based on the above embodiments, at least four busbars 120 further include at least three phase busbars 122 and neutral busbars 123, and at least two phase busbars 122 have the same structure.

[0106] In this embodiment, at least four busbars 120 are defined, including at least three phase busbars 122 and a neutral busbar 123. Specifically, at least three phase busbars 122 are electrically connected to multiple terminals 211 of the terminal assembly 210 of the busbar 200. The phase busbars 122 and the neutral busbars 123 are respectively provided with multiple welding hooks for welding to the stator winding terminals 331. Since the phase busbars 122 need to be provided with connection portions 1221b that are electrically connected to the terminals 211, the number of welding hooks provided on the phase busbars 122 is limited, while the neutral busbars 123 can be provided with a larger number of welding hooks. That is to say, by providing neutral busbars 123, compared with the busbar assembly 100 which only has phase busbars 122, the number of welding hooks can be increased. The larger number of welding hooks can be electrically connected to more terminals 331, which is beneficial to realize the multi-phase parallel connection of the motor, thereby forming a multi-phase circuit.

[0107] At least two of the at least three phase busbars 122 have identical structures. This means that the busbar segment 122 of each phase busbar 122 is a phase busbar segment 1221. In other words, at least four phase busbar segments 1221 have identical structures. During the manufacturing process of the busbar 200, at least four phase busbar segments 1221 can be produced using the same set of molds, further reducing mold manufacturing costs and significantly lowering the production cost of the busbar 200 with the busbar assembly 100, thus improving material utilization. Furthermore, this facilitates mass production of the phase busbars 122, thereby effectively improving product production efficiency.

[0108] Among them, at least three phase busbars 122 have the same structure, that is, all phase busbar segments 1221 in the busbar assembly 100 have the same structure, which further reduces the manufacturing cost of the mold, significantly reduces the production cost of the busbar 200 with the busbar assembly 100, improves the utilization rate of materials, and improves the production efficiency of the product.

[0109] like Figure 6 As shown, in a specific embodiment, at least four busbars 120 are further distributed at intervals along the axial direction of the busbar frame 110.

[0110] In this embodiment, at least four busbars 120 are spaced apart along the axial direction of the busbar frame 110, which facilitates the welding of the busbars 120 to the terminals 211 and the stator winding terminals 331. It also helps to reduce the radial dimension of the busbar assembly 100, thereby reducing the space occupied by the busbar 200 with the busbar assembly 100, which is beneficial to the miniaturization of the motor with the busbar 200.

[0111] Example 2:

[0112] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, based on the above embodiments, each busbar segment further includes a main body and multiple welding hooks, wherein the main body is disposed within the busbar frame 110, and the multiple welding hooks are disposed at intervals along the circumferential direction on the main body, the first end of the welding hook is connected to the main body, and the second end of the welding hook is exposed outside the busbar frame 110.

[0113] In this embodiment, each busbar segment is defined as including a main body and multiple welding hooks. Specifically, the main body is disposed within the busbar frame 110. It is understood that after the busbar frame 110 is injection molded, placing the main body within the busbar frame 110 facilitates the fixing of the busbars 120, ensures mutual insulation between the multiple busbars 120, and improves the reliability of the busbar 200 having the busbar assembly 100. Multiple welding hooks are circumferentially spaced on the main body, with one end of the welding hook connected to the main body and the second end of the welding hook exposed outside the busbar frame 110. The stator winding terminal 331 is welded to the second end of the welding hook exposed outside the busbar frame 110, realizing the electrical connection between the stator winding and the busbar 120.

[0114] It should be noted that the welding hook and the main body are an integral structure. This integral structure provides excellent mechanical properties, thus improving the connection strength between the welding hook and the main body, and consequently enhancing the connection stability between the welding hook and the stator winding terminal 331, thereby improving the stability and reliability of motor operation. Furthermore, the integral structure facilitates mass production of the busbar 120, which helps to further reduce the production cost of the busbar assembly 100.

[0115] In practical applications, the busbar 200 with the bus assembly 100 is used on a 12-slot motor. It is understood that a 12-slot motor means that the stator core 320 has 12 stator teeth, with a stator slot formed between two adjacent stator teeth. Each stator tooth corresponds to a stator frame 310 on which a stator winding is wound. Each stator winding includes two terminals 331, meaning that 12 stator windings are required, resulting in 24 terminals 331. Each terminal 331 is electrically connected to a welding hook via welding. Therefore, the bus assembly 100 includes 24 welding hooks, and each welding hook corresponds one-to-one with a terminal 331. The angle between the line connecting two adjacent welding hooks and the center of the busbar frame 110 is 15°.

[0116] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 12 , Figure 14 , Figure 15 and Figure 20 As shown, in a specific embodiment, the plurality of welding hooks further includes a plurality of first welding hooks 1221c and a plurality of second welding hooks 1231b. The plurality of first welding hooks 1221c are disposed on the main body of the phase busbar 122, and the plurality of second welding hooks 1231b are disposed on the main body of the neutral busbar 123; wherein the open ends of the first welding hooks 1221c and the open ends of the second welding hooks 1231b face opposite directions.

[0117] In this embodiment, multiple welding hooks are defined, including multiple first welding hooks 1221c and multiple second welding hooks 1231b. Specifically, at least four busbars 120 include at least three phase busbars 122 and one neutral busbar 123. The main body of the phase busbar 122 is the phase main body 1221a, and the main body of the neutral busbar 123 is the neutral main body 1231a. The multiple first welding hooks 1221c are connected to the phase main body 1221a, and the multiple second welding hooks 1231b are connected to the neutral main body 1231a. The first welding hook 1221c and the second welding hook 1231b are connected in opposite directions. Specifically, the first welding hook 1221c is positioned on the outer wall of the phase main body 1221a, and the second welding hook 1231b is positioned on the inner wall of the neutral main body 1231a; alternatively, the first welding hook 1221c can be positioned on the inner wall of the phase main body 1221a, and the second welding hook 1231b can be positioned on the outer wall of the neutral main body 1231a. The specific arrangement can be determined according to actual needs. By distributing the welding hooks connected to the stator winding terminal 331 both internally and externally, the distance between two adjacent welding hooks (internal or external) can be increased, thereby increasing the welding space between the welding hook and the terminal 211, facilitating welding operations. This also increases the installation space inside the busbar 200, reduces the installation difficulty of the busbar 200 and the stator frame 310, and improves the installation efficiency of the motor stator.

[0118] Example 3:

[0119] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, based on the above embodiment, each of the at least two bus segments of the phase bus bar 122 is a phase bus segment 1221, the main body of each phase bus segment 1221 is a phase main body 1221a, and a plurality of first welding hooks 1221c are provided on the phase main body 1221a; each phase bus segment 1221 also includes a connecting part 1221b, the first end of the connecting part 1221b is connected to the phase main body 1221a, the second end of the connecting part 1221b is exposed outside the bus frame 110, and the connecting part 1221b is used to connect to the terminal assembly 210 of the busbar 200.

[0120] In this embodiment, each of the at least two bus segments of the phase bus bar 122 is a phase bus segment 1221, and correspondingly, each of the at least two bus segments of the neutral bus bar 123 is a neutral bus segment 1231. The main body of each phase bus segment 1221 is a phase main body 1221a, and the main body of each neutral bus segment 1231 is a neutral main body 1231a. A plurality of first welding hooks 1221c are disposed on the phase main body 1221a, and a plurality of second welding hooks 1231b are disposed on the neutral main body 1231a. Furthermore, each phase bus section 1221 also includes a connecting portion 1221b, wherein a first end of the connecting portion 1221b is connected to the phase main body portion 1221a, and a second end of the connecting portion 1221b is exposed outside the bus frame 110. The second end of the connecting portion 1221b exposed outside the bus frame 110 is used to connect to the terminal 211, thereby realizing the electrical connection between the bus assembly 100 and the terminal assembly 210.

[0121] The connecting part 1221b extends in a direction away from the center of the busbar frame 110. In other words, the second end of the connecting part 1221b exposed outside the busbar frame 110 extends outward, which facilitates the welding operation between the connecting part 1221b and the terminal 211, thereby improving the production efficiency of the product.

[0122] It should be noted that at least three phase busbars 122 include two sets of phase busbar segments 1221 that are centrally symmetrical with respect to the center of the busbar frame 110. Each set of phase busbar segments 1221 is distributed at intervals along the axial direction. The angle between the connection portion 1221b of two adjacent phase busbar segments 1221 in each set of phase busbar segments 1221 and the line connecting the center of the busbar frame 110 is 30°.

[0123] For example, at least three phase busbars 122 include a first-phase copper busbar, a second-phase copper busbar, and a third-phase copper busbar, which are sequentially spaced along the axial direction. A neutral busbar 123 includes a neutral point copper busbar, which is positioned close to the third-phase copper busbar. That is, along the axial direction, the first-phase copper busbar, the second-phase copper busbar, the third-phase copper busbar, and the neutral point copper busbar are sequentially spaced. The neutral point copper busbar is rotated 15° to 25° relative to the third-phase copper busbar. In a specific application, the motor includes a control board. The connecting portion 1221b of the phase busbar 122 is electrically connected to one end of terminal 211, and the other end of terminal 211 is connected to the control board. The control board is connected to an external power source, forming an electrical circuit to supply power to the stator windings of the motor, thus realizing the busbar function.

[0124] Example 4:

[0125] like Figure 7 , Figure 8 , Figure 12 , Figure 14, Figure 15 and Figure 20 As shown, based on the above embodiments, the busbar assembly 100 further includes a plurality of first connectors 130, which are circumferentially spaced on the outer peripheral wall of the busbar frame 110 and are used to connect with the stator frame 310 of the motor.

[0126] In this embodiment, the busbar assembly 100 further includes a plurality of first connectors 130. Specifically, the plurality of first connectors 130 are circumferentially spaced on the outer peripheral wall of the busbar frame 110. By providing the plurality of first connectors 130, the connection between the busbar assembly 100 and the motor stator frame 310 can be realized. That is, the busbar assembly 100 is connected to the stator of the motor through the plurality of first connectors 130. It is understood that when the plurality of first connectors 130 are distributed circumferentially, they need to be positioned to avoid the positions of the welding hooks and the connecting parts 1221b, so as to avoid the first connectors 130 interfering with the positions of the welding hooks and the connecting parts 1221b, thereby increasing the welding difficulty between the welding hooks and the stator winding terminals 331, and between the connecting parts 1221b and the terminals 211, which can further improve the production efficiency of the product.

[0127] It should be noted that the multiple first connectors 130 and the busbar frame 110 are injection molded in one piece, that is, the multiple first connectors 130 and the busbar frame 110 are an integral structure, which can effectively improve the connection strength between the multiple first connectors 130 and the busbar frame 110, thereby ensuring the connection stability between the busbar assembly 100 and the stator frame 310 of the motor and improving the reliability of motor operation.

[0128] In practical applications, the first connector 130 can be a hook, and multiple hooks can be used to achieve a detachable connection with the stator frame 310, ensuring connection stability during connection and facilitating disassembly.

[0129] It is worth noting that the number of first connectors 130 can be set according to actual needs. It is understandable that a larger number of first connectors 130 can improve the connection effect between the busbar assembly 100 and the stator frame 310. However, the number of first connectors 130 should not be too large. Too many first connectors 130 can easily interfere with the position of the connecting part 1221b or the welding hook. Specifically, the number of first connectors 130 can be 4.

[0130] Example 5:

[0131] According to a second aspect of the present invention, a busbar 200 is provided, including the busbar component 100 as provided in any of the above embodiments, and thus possessing all the beneficial technical effects of the busbar component 100, which will not be repeated here.

[0132] like Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 15 , Figure 16 , Figure 17 , Figure 18 , Figure 19 and Figure 20 As shown, the bus 200 further includes a terminal assembly 210, which is connected to the bus assembly 100. The terminal assembly 210 includes a plurality of terminals 211. The first end of one terminal 211 is connected to a connection portion 1221b of the bus assembly 100, and the second end of each terminal 211 is used to connect to a power source.

[0133] The busbar 200 provided in this embodiment of the invention includes a bus assembly 100 and a terminal assembly 210. Specifically, the terminal assembly 210 has multiple terminals 211, each terminal 211 including a first end and a second end. The first end of one terminal 211 is electrically connected to a connection part 1221b, and the second end of one terminal 211 is used to connect to a power source, thereby forming an electrical circuit to supply power to the electronic stator winding. In specific applications, the motor also includes a control board, which is electrically connected to an external power source. The second end of the terminal 211 is connected to the control board, meaning that the second end of the terminal 211 is connected to the power source through the control board. By setting up the busbar 200, the busbar 120 is electrically connected to the stator winding terminals 331, eliminating the need to directly connect the corresponding terminals 331, effectively reducing wiring difficulty and improving product production efficiency.

[0134] Specifically, the bus assembly 100 includes a plurality of bus bars 120, the plurality of bus bars 120 including at least three phase bus bars 122 and one neutral bus bar 123. The bus section of the phase bus bar 122 is the phase bus bar 122. The phase bus bar 122 includes a phase body portion 1221a and a connecting portion 1221b, wherein one connecting portion 1221b is electrically connected to the second end of a terminal 211.

[0135] Each busbar 120 includes at least two bus segments spaced circumferentially. At least two bus segments within a single busbar 120 have identical structures. During the manufacturing process of the busbar 200, these identical bus segments can be produced using the same set of molds, effectively reducing mold manufacturing costs and consequently lowering the production cost of the busbar 200 with the busbar assembly 100. Furthermore, the identical structures of at least two bus segments within a single busbar 120 mean that dividing a single busbar 120 into multiple identical bus segments for processing further reduces mold processing difficulty, further lowering the production cost of the busbar 200 and improving material utilization. Moreover, it facilitates mass production of the busbar 120, thereby effectively improving product manufacturing efficiency.

[0136] Example 6:

[0137] like Figure 9 , Figure 10 , Figure 16 and Figure 17 As shown, based on the above embodiment, the terminal assembly 210 further includes a terminal frame 212, which is connected to the bus frame 110. A plurality of terminals 211 are disposed on the terminal frame 212, and a portion of each terminal 211 is exposed outside the terminal frame 212.

[0138] In this embodiment, the terminal assembly 210 further includes a terminal frame 212. Specifically, the terminal frame 212 is connected to the busbar frame 110, and multiple terminals 211 are disposed on the terminal frame 212, with a portion of each terminal 211 exposed outside the terminal frame 212, so that the terminals 211 can be connected to the connection portion 1221b of the phase busbar 122 and the motor control board, respectively. That is, multiple terminals 211 are installed and fixed by the terminal frame 212. Specifically, the multiple terminals 211 can be integrally injection molded with the terminal frame 212, or the terminal frame 212 can be injection molded and then assembled with the multiple terminals 211, depending on actual needs. By setting the terminal frame 212 to achieve fixed installation of multiple terminals 211, it can effectively prevent the terminals 211 from shaking and deforming, provide effective support and fixation for the terminals 211, and ensure the connection stability of the terminals 211 with the connection portion 1221b of the phase busbar 122 and the motor control board.

[0139] It is understandable that the terminal frame 212 is made of insulating material. By setting the terminal frame 212, not only can multiple terminals 211 be supported and fixed, but also the mutual insulation between multiple terminals 211 can be achieved, further improving the operating stability of the motor with the bus 200.

[0140] like Figure 8, Figure 9 , Figure 10 and Figure 12 As shown, based on the above embodiment, the terminal assembly 210 further includes a clearance groove 213. The clearance groove 213 is disposed on the terminal frame 212 and located between two adjacent terminals 211. The opening of the clearance groove 213 is located on the side away from the central axis of the bus frame 110.

[0141] In this embodiment, the terminal assembly 210 is further defined as including a clearance groove 213. Specifically, a clearance groove 213 is provided between two adjacent terminals 211 on the terminal frame 212. It is understood that the clearance groove 213 is located above the welding hook. By setting the clearance groove 213, it is convenient to cut the wire after welding the stator winding terminal 331 to the welding hook, thereby further improving the production efficiency of the product.

[0142] Specifically, the busbar frame 110 of the busbar assembly 100 is connected to the terminal frame 212 of the terminal assembly 210, and the connecting part 1221b is connected to the terminal 211. The terminal frame 212 partially obstructs the welding hook located below it, making it inconvenient to cut the wire after welding the stator winding terminal 331 to the welding hook. By providing a clearance groove 213 between two adjacent terminals 211, and providing a clearance groove 213 above the corresponding welding hook, it is easier to cut the wire after welding the stator winding terminal 331 to the welding hook, thereby further improving the production efficiency of the product. Furthermore, the groove opening of the clearance groove 213 is located on the side away from the central axis of the busbar frame 110, further facilitating the wire cutting operation and improving the production efficiency of the product.

[0143] like Figure 10 and Figure 11 As shown, based on the above embodiment, a portion of the terminal 211 near the first end of the terminal 211 is bent to form an avoidance area 2111.

[0144] In this embodiment, a portion of terminal 211 near its first end is bent to form a clearance area 2111. Since the first end of terminal 211 is connected to the connecting portion 1221b of the phase busbar 122, bending a portion of terminal 211 near the connecting portion 1221b of the phase busbar 122 to form the clearance area 2111 facilitates the welding operation between terminal 211 and the connecting portion 1221b, thereby improving product production efficiency. Furthermore, after bending terminal 211 to form the clearance area 2111, the end of terminal 211 connected to the connecting portion 1221b of the phase busbar 122 forms a connecting wall, and the connecting arm extends radially along the busbar frame 110, further facilitating the welding operation between the connecting portion 1221b and terminal 211. Moreover, increasing the contact area between terminal 211 and the connecting portion 1221b improves the connection strength between the connecting portion 1221b and terminal 211, further enhancing the stability and reliability of motor operation.

[0145] like Figure 7 , Figure 9 , Figure 14 and Figure 16 As shown, based on the above embodiment, the busbar frame 110 is further provided with a plurality of second connectors 111 on the side facing the terminal frame 212, and the terminal frame 212 is provided with a plurality of connection holes 2121, each second connector 111 being adapted to a connection hole 2121.

[0146] In this embodiment, the busbar frame 110 is provided with a plurality of second connectors 111 on the side facing the terminal frame 212, and the terminal frame 212 is provided with a plurality of connection holes 2121, and each connection hole 2121 is adapted to a second connector 111. That is, the busbar frame 110 and the terminal frame 212 are fixedly connected through the plurality of connection holes 2121 and the plurality of second connectors 111.

[0147] Specifically, the second connector 111 can be an undercut, which is inserted into the connection hole 2121 to achieve a fixed connection between the busbar frame 110 and the terminal frame 212. Alternatively, the second connector 111 can be made of a molten material. After the second connector 111 passes through the connection hole 2121, a portion of the second connector 111 will protrude. This protruding portion can be heated and melted, and after cooling, a fixed connection between the busbar frame 110 and the terminal frame 212 is achieved, ensuring the effective connection between the busbar assembly 100 and the terminal assembly 210.

[0148] Example 7:

[0149] According to a third aspect of the present invention, an electric motor is provided, including a bus 200 as provided in any of the above embodiments, and thus possessing all the beneficial technical effects of the bus 200, which will not be repeated here.

[0150] like Figure 12 , Figure 13 and Figure 20 As shown, the motor further includes a stator frame 310, which has multiple slots. Each slot is adapted to a first connector 130 of the busbar assembly 100. The stator core 320 is disposed on the stator frame 310, and the stator winding is wound on the stator frame 310. The stator winding includes a terminal 331, which is connected to a welding hook of the busbar assembly 100.

[0151] The motor provided in this embodiment of the invention includes a busbar 200, a stator frame 310, a stator core 320, and stator windings. Specifically, the stator core 320 is disposed on the stator frame 310, and the stator windings are wound on the stator frame 310. Each stator winding includes two terminals 331, and each terminal 331 is electrically connected to the welding hook of the busbar assembly 100. In addition, the busbar 200 also includes a terminal assembly 210, wherein the terminal assembly 210 includes a plurality of terminals 211, a portion of each terminal 211 is connected to the connection portion 1221b of the busbar assembly 100, and one end of each terminal 211 is used to connect to an external power source. That is, the busbar 200 enables multiple stator windings to be electrically connected to an external power source and forms an electrical circuit to supply power to multiple stator windings, thereby realizing the busbar function. Furthermore, by setting up a busbar 200, the busbar 120 is electrically connected to the stator winding terminal 331, eliminating the need to directly connect the corresponding terminal 331, which can effectively reduce wiring difficulty and improve product production efficiency.

[0152] Furthermore, the stator frame 310 is provided with multiple slots, each slot being adapted to a first connector 130. In other words, the stator and busbar 200 are connected through multiple first connectors 130 and multiple slots.

[0153] In practical applications, this motor is a 12-slot motor. This means the stator core 320 has 12 stator teeth, with each adjacent tooth forming a stator slot. Each stator tooth corresponds to a stator frame 310 on which a stator winding is wound. Each stator winding includes two terminals 331. Therefore, 12 stator windings are required, resulting in 24 terminals 331. Each terminal 331 is electrically connected to a welding hook via welding.

[0154] The 24 terminals 331 can be connected in a Y-type wiring configuration. Specifically, 12 terminals 331 form a group, and every two terminals in each group are connected in parallel to form a phase, resulting in a 3-phase motor including phases U, V, and W. The two groups of terminals 331 thus form a dual 3-phase 6-phase motor. The Y-type wiring configuration of the motor is achieved through the busbar 200 structure.

[0155] Example 8:

[0156] According to a fourth aspect of the present invention, an electric power steering system is provided, comprising a motor as provided in any of the above embodiments, and thus possessing all the beneficial technical effects of the motor, which will not be elaborated further here.

[0157] Example 9:

[0158] According to a fifth aspect of the present invention, a vehicle is provided that includes an electric power steering system as provided in any of the above embodiments, and thus possesses all the beneficial technical effects of the electric power steering system, which will not be repeated here.

[0159] It is worth noting that the vehicles can be either traditional gasoline-powered vehicles or new energy vehicles. New energy vehicles include pure electric vehicles, range-extended electric vehicles, hybrid electric vehicles, fuel cell electric vehicles, and hydrogen engine vehicles.

[0160] In the description of this specification, the terms "connection," "installation," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0161] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0162] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An electric motor, characterized in that, include: Bus, the bus including bus components; The stator frame is provided with multiple slots, each slot being adapted to a first connector of the bus assembly; The stator core is disposed on the stator frame; The stator winding is wound on the stator frame. The stator winding includes terminals. The terminals are connected to the welding hooks of the busbar assembly. Each pair of terminals in each group is connected in parallel to form a phase, forming a 3-phase motor including U phase, V phase and W phase. The two groups of terminals form a double 3-phase 6-phase motor. The bus also includes: A terminal assembly is connected to the bus assembly. The terminal assembly includes a plurality of terminals. A first end of one of the terminals is connected to a connection portion of the bus assembly, and a second end of each terminal is used to connect to a power source. The bus component includes: Busbar skeleton; At least four busbars are spaced apart on the busbar frame, a portion of each busbar is exposed outside the busbar frame, and each busbar includes at least two bus segments spaced apart circumferentially; In one of the busbars, at least two bus segments have the same structure; The at least four busbars include at least three phase busbars and a neutral busbar, and at least two of the phase busbars have the same structure; The at least four busbars are spaced apart along the axial direction of the busbar skeleton; The at least three phase busbars include two sets of phase busbar segments that are centrally symmetrical with respect to the center of the busbar skeleton. Each set of phase busbar segments is distributed at intervals along the axial direction, and the phase busbar segments have the same structure. Each of the aforementioned bus segments includes: The main body is disposed within the busbar frame; Multiple welding hooks are spaced apart circumferentially on the main body. The first end of each welding hook is connected to the main body, and the second end of each welding hook is exposed on the busbar frame.

2. The motor according to claim 1, characterized in that, The plurality of welding hooks includes a plurality of first welding hooks and a plurality of second welding hooks, wherein the plurality of first welding hooks are disposed on the main body of the phase busbar and the plurality of second welding hooks are disposed on the main body of the neutral busbar; The open ends of the first welding hook and the second welding hook face opposite directions.

3. The motor according to claim 2, characterized in that, Each of the at least two busbar segments of the phase busbar is a phase busbar segment, and the main body of each phase busbar segment is a phase main body. The plurality of first welding hooks are disposed on the phase main body. Each of the aforementioned phase-type bus segments also includes: The connecting part has a first end connected to the phase body part and a second end exposed outside the busbar frame. The connecting part is used to connect to the terminal assembly of the busbar.

4. The motor according to any one of claims 1 to 3, characterized in that, The bus component also includes: A plurality of first connectors are circumferentially spaced on the outer peripheral wall of the busbar frame, and the plurality of first connectors are used to connect to the stator frame of the motor.

5. The motor according to claim 1, characterized in that, The terminal assembly also includes: A terminal frame is connected to the bus frame, and the plurality of terminals are disposed on the terminal frame, with a portion of each terminal exposed outside the terminal frame.

6. The motor according to claim 5, characterized in that, The terminal assembly also includes: An avoidance groove is provided on the terminal frame and located between two adjacent terminals. The opening of the avoidance groove is located on the side opposite to the central axis of the busbar frame.

7. The motor according to claim 6, characterized in that, The portion of the terminal near its first end is bent to form a clearance area.

8. The motor according to claim 6, characterized in that, The busbar frame has a plurality of second connectors on one side facing the terminal frame, and the terminal frame has a plurality of connection holes, each of the second connectors being adapted to one of the connection holes.

9. An electric power steering system, characterized in that, Includes the motor as described in any one of claims 1 to 8.

10. A vehicle, characterized in that, Includes the electric power steering system as described in claim 9.

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