Stator busbar assembly, motor, driving assembly and vehicle
By setting busbars between the radial and axial directions of the stator windings and insulating and connecting them with insulating parts, the problem of excessive space occupied by busbars in flat wire motors is solved, and the miniaturization design of the motor is realized.
Patent Information
- Application Number
- CN202420012706.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-02
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-01-02
AI Technical Summary
Due to the axial stacking and spacing arrangement of the three-phase busbars in existing flat wire motors, the overall axial height and volume of the motor are large, which cannot meet the needs of miniaturization.
By setting the first phase, second phase and third phase busbars in the radial and axial directions of the stator winding, and insulating and connecting each other with insulating members, the axial space occupation of the busbar is reduced, and the star point busbars are designed. Ranking to optimize spatial layout.
It effectively reduces the axial space occupied by the stator bus assembly, reduces the axial height and volume of the motor, and simplifies the structure, which is suitable for miniaturized motor design.
Smart Images
Figure CN222356083U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of motor technology, and more specifically to a stator bus assembly, a motor, a drive assembly and a vehicle. Background Art
[0002] With the rapid development of the new energy vehicle market and new energy vehicle technology, the electric drive system is gradually moving towards high speed, miniaturization and high efficiency. The whole vehicle has put forward higher requirements on the cost and performance of the electric drive system. Therefore, the motor assembly is gradually developing towards miniaturization and integration.
[0003] At present, flat wire motors are favored by more and more manufacturers due to their high efficiency, high power density, high heat dissipation capacity and better NVH performance. The three-phase busbars in existing flat wire motors are arranged in layers and intervals in the axial direction of the stator winding. When the minimum electrical clearance requirement is met, this arrangement will occupy more axial space, resulting in a larger axial height of the motor as a whole and a larger volume of the motor as a whole.
[0004] Therefore, improvements are needed to at least partially solve the above problems. Utility Model Content
[0005] A series of simplified concepts are introduced in the utility model content section, which will be further described in detail in the detailed implementation section. The utility model content section of the utility model does not mean to attempt to define the key features and essential technical features of the technical solution claimed for protection, nor does it mean to attempt to determine the scope of protection of the technical solution claimed for protection.
[0006] In order to at least partially solve the above problems, according to a first aspect of the utility model, a stator busbar assembly is provided, which includes a first-phase busbar, a second-phase busbar, a third-phase busbar and an insulating member;
[0007] The first phase busbar, the second phase busbar, and the third phase busbar are all fixedly connected to the insulating member and insulated from each other by the insulating member, wherein the first phase busbar, the second phase busbar, and the third phase busbar are all used to connect with the lead-out wires of the stator winding, the first phase busbar is at least partially spaced apart from the second phase busbar in the radial direction of the stator winding, and the second phase busbar is at least partially spaced apart from the third phase busbar in the axial direction of the stator winding.
[0008] Exemplarily, the first phase busbar comprises a first lead-out section and a first connecting section, the first lead-out section extends along the axial direction of the stator winding, the first connecting section is provided with a first welding leg, and the first welding leg protrudes along the axial direction of the stator winding;
[0009] The second phase busbar comprises a second lead-out section and a second connecting section, the second lead-out section extends along the axial direction of the stator winding, the second connecting section is provided with a second welding leg, and the second welding leg protrudes along the axial direction of the stator winding;
[0010] The third phase busbar comprises a third lead-out section and a third connecting section, wherein the third lead-out section extends along the axial direction of the stator winding, and the third connecting section is provided with a third welding foot, and the third welding foot protrudes along the axial direction of the stator winding;
[0011] The first connecting segment is at least partially spaced apart from the second connecting segment in the radial direction of the stator winding, and the third connecting segment is at least partially spaced apart from the second connecting segment in the axial direction of the stator winding.
[0012] Exemplarily, the stator bus assembly also includes a star-point bus, which is fixedly connected to the insulating member and is insulated from the first phase bus, the second phase bus and the third phase bus by the insulating member, wherein the star-point bus is at least partially located on a side of the first phase bus away from the second phase bus.
[0013] Exemplarily, a fourth weld leg, a fifth weld leg and a sixth weld leg are arranged at intervals on the star-point bus, and the fourth weld leg, the fifth weld leg and the sixth weld leg all protrude along the axial direction of the stator winding, and the fourth weld leg, the fifth weld leg and the sixth weld leg are respectively adjacent to the first weld leg, the second weld leg and the third weld leg.
[0014] Exemplarily, the first weld leg, the second weld leg and the third weld leg are located on the same circumference, the center of the circle coincides with the central axis of the stator winding, and the angle between the first weld leg and the second weld leg is equal to the angle between the second weld leg and the third weld leg.
[0015] Exemplarily, hollow portions are provided on the insulating member at positions corresponding to the first welding leg, the second welding leg and the third welding leg, and reinforcing ribs are provided at edges of the hollow portions.
[0016] Exemplarily, the first lead-out section, the first lead-out section and the third lead-out section are respectively provided with a first connection hole, a second connection hole and a third connection hole;
[0017] The stator bus assembly also includes a first nut, a second nut and a third nut, which are respectively fixed to the first lead-out section, the first lead-out section and the third lead-out section, and correspond to the positions of the first connecting hole, the second connecting hole and the third connecting hole, respectively.
[0018] Exemplarily, the insulating member is an injection-molded member, and the insulating member partially covers the first-phase busbar, partially covers the second-phase busbar, and partially covers the third-phase busbar.
[0019] Exemplarily, a positioning groove is provided on the insulating member, and the positioning groove partially exposes at least one of the first phase busbar, the second phase busbar, and the third phase busbar.
[0020] Exemplarily, the insulating member has a step portion on a side facing the stator winding.
[0021] According to a second aspect of the utility model, a motor is provided, which includes the stator busbar assembly as described above.
[0022] According to a third aspect of the utility model, a drive assembly is provided, which includes the motor as described above.
[0023] According to a fourth aspect of the utility model, a vehicle is provided, which includes the drive assembly as described above.
[0024] According to the stator bus assembly, motor, and drive assembly vehicle of the utility model, the first phase bus in the stator bus assembly is at least partially spaced apart from the second phase bus in the radial direction of the stator winding, and the second phase bus is at least partially spaced apart from the third phase bus in the axial direction of the stator winding, so that the space in both axial and radial directions can be utilized simultaneously to arrange the bus. While meeting the minimum electrical clearance requirement, the axial space occupied by the stator bus assembly can be effectively reduced, thereby reducing the axial height and volume of the motor having the stator bus assembly. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] The following drawings of the present application are hereby used as part of the present application for understanding the present application. The drawings show the embodiments of the present application and their descriptions, and are used to explain the device and principle of the present application. In the drawings,
[0026] Figure 1 It is a structural schematic diagram of a stator component including a stator busbar assembly according to an embodiment of the present application;
[0027] Figure 2 for Figure 1 A schematic diagram of the structure of the stator busbar assembly;
[0028] Figure 3 for Figure 1 An exploded schematic diagram of the stator busbar assembly in FIG.
[0029] Figure 4 for Figure 2 A local enlarged schematic diagram of the middle A;
[0030] Figure 5 It is a structural schematic diagram of a stator busbar assembly according to another embodiment of the present application.
[0031] Description of reference numerals:
[0032] 100-stator busbar assembly, 110-insulating member, 110'-insulating member, 111-first reinforcing rib, 112-second reinforcing rib, 113-third reinforcing rib, 114-first positioning groove, 115-second positioning groove, 116-third positioning groove, 120-first phase busbar, 121-first lead-out section, 1211-first connecting hole, 122-first connecting section, 123-first welding foot, 130-second phase busbar, 131-second lead-out section Outlet section, 1311-second connecting hole, 132-second connecting section, 133-second welding foot, 140-third phase bus, 141-third lead-out section, 1411-third connecting hole, 142-third connecting section, 143-third welding foot, 150-star point bus, 151-bus body, 152-fourth welding foot, 153-fifth welding foot, 154-sixth welding foot, 160-first nut, 170-second nut, 180-third nut;
[0033] 200- stator winding;
[0034] 300- stator core. DETAILED DESCRIPTION
[0035] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present application. However, it is apparent to those skilled in the art that the present application can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present application, some technical features well known in the art are not described.
[0036] It should be understood that the present application can be implemented in different forms and should not be construed as being limited to the embodiments presented herein. On the contrary, providing these embodiments will make the disclosure thorough and complete and fully convey the scope of the present application to those skilled in the art. In the accompanying drawings, the sizes and relative sizes of layers and regions may be exaggerated for clarity. The same reference numerals throughout represent the same elements.
[0037] It should be understood that although the terms first, second, third, etc. can be used to describe various elements, components, regions, layers and / or parts, these elements, components, regions, layers and / or parts should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or part from another element, component, region, layer or part. Therefore, without departing from the teachings of the present application, the first element, component, region, layer or part discussed below can be represented as a second element, component, region, layer or part.
[0038] Spatially relative terms such as "under", "beneath", "below", "under", "above", "above", etc., may be used herein for convenience of description to describe the relationship of one element or feature to other elements or features shown in the figures. It should be understood that the spatially relative terms are intended to encompass different orientations of the device in use and operation in addition to the orientation shown in the figures.
[0039] The purpose of the terms used herein is only to describe specific embodiments and is not intended to be limiting of the present application. When used herein, the singular forms "one", "an" and "said / the" are also intended to include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "consisting of" and / or "comprising", when used in this specification, determine the presence of the features, integers, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, parts and / or groups. When used herein, the term "and / or" includes any and all combinations of the relevant listed items.
[0040] Embodiments of the utility model are described herein with reference to cross-sectional views as schematic diagrams of ideal embodiments (and intermediate structures) of the present application. In this way, variations in the shapes shown due to, for example, manufacturing techniques and / or tolerances can be expected. Therefore, the embodiments of the present application should not be limited to the specific shapes shown herein, but include shape deviations due to, for example, manufacturing. Therefore, what is shown in the figures is schematic in nature, and their shapes are not intended to display the actual shape of the device and are not intended to limit the scope of the present application.
[0041] See attached Figure 1-4 The stator busbar assembly 100 according to an embodiment of the present application is exemplarily described. The stator busbar assembly 100 includes a first-phase busbar 120 , a second-phase busbar 130 , a third-phase busbar 140 and an insulating member 110 .
[0042] The first phase busbar 120, the second phase busbar 130 and the third phase busbar 140 are all used to connect with the lead wires of the stator winding 200. In this embodiment, the first phase busbar 120, the second phase busbar 130 and the third phase busbar 140 can be, for example, a W-phase busbar, a V-phase busbar and a U-phase busbar, respectively, which are respectively used to connect with the lead wires of the W-phase winding, the lead wires of the V-phase winding and the lead wires of the U-phase winding in the stator winding 200. It should be noted that the first phase busbar 120, the second phase busbar 130 and the third phase busbar 140 can also be busbars of other phases, which is not limited in this application. In this embodiment, the first phase bus 120, the second phase bus 130 and the third phase bus 140 are all copper busbars. It should be noted that the first phase bus 120, the second phase bus 130 and the third phase bus 140 can also be buses made of other materials, and this application does not limit this.
[0043] The insulating member 110 is located at one axial end of the stator winding 200, and the first phase bus 120, the second phase bus 130, and the third phase bus 140 are all fixedly connected to the insulating member 110 and insulated from each other by the insulating member 110, wherein the first phase bus 120 is at least partially spaced apart from the second phase bus 130 in the radial direction of the stator winding 200, and the second phase bus 130 is at least partially spaced apart from the third phase bus 140 in the axial direction of the stator winding 200.
[0044] The stator bus assembly 100 of this embodiment utilizes the space in both the axial and radial directions to arrange the busbars. While meeting the minimum electrical clearance requirement, it can effectively reduce the axial space occupied by the stator bus assembly 100 and reduce the axial height and volume of the motor having the stator bus assembly 100.
[0045] In the present embodiment, the first phase busbar 120 includes a first lead-out section 121 and a first connecting section 122. The first lead-out section 121 extends in the axial direction of the stator winding 200 and is used to connect to the terminal of the device outside the motor (such as a motor controller). In the present embodiment, the first lead-out section 121 has a bent section at one end away from the first connecting section 122, and a first connecting hole 1211 is provided on the bent section. The stator busbar assembly 100 also includes a first nut 160, which is fixed to the first lead-out section 121 and corresponds to the position of the first connecting hole 1211, that is, the first connecting hole 1211 is coaxial with the through hole of the first nut 160. In the present embodiment, the first nut 160 is a pressure riveted nut, which is fixed to the first lead-out section 121 by a riveting process. In some embodiments, the first nut 160 can be a conventional nut, which is fixed to the first lead-out section 121 by welding. In some embodiments, the first lead-out section 121 may not have a bending section, and the first connection hole 1211 is directly provided on the first lead-out section 121. Thus, the connection terminal of the device outside the motor can be conveniently connected to the first lead-out section 121 by bolts, reducing the difficulty of the installation operation. The first connection section 122 is connected to the first lead-out section 121, and is perpendicular to the first lead-out section 121 or approximately perpendicular to the first lead-out section 121. The first connection section 122 is provided with a first welding leg 123, which protrudes along the axial direction of the stator winding 200, and the first welding leg 123 is used for welding and connecting with the lead wire of the W phase winding.
[0046] Similarly, the second phase busbar 130 includes a second lead-out section 131 and a second connecting section 132. The second lead-out section 131 extends in the axial direction of the stator winding 200 and is used to connect to the terminal of the device outside the motor (such as a motor controller). In this embodiment, the second lead-out section 131 has a bent section at one end away from the second connecting section 132, and a second connecting hole 1311 is provided on the bent section. The stator busbar assembly 100 also includes a second nut 170, which is fixed to the second lead-out section 131 and corresponds to the position of the second connecting hole 1311, that is, the second connecting hole 1311 is coaxial with the through hole of the second nut 170. In this embodiment, the second nut 170 is a pressure riveted nut, which is fixed to the second lead-out section 131 by a riveting process. In some embodiments, the second nut 170 can be a conventional nut, which is fixed to the second lead-out section 131 by welding. In some embodiments, the second lead-out section 131 may not have a bending section, and the second connection hole 1311 is directly provided on the second lead-out section 131. Thus, the connection terminal of the equipment outside the motor can be conveniently connected to the second lead-out section 131 by bolts, reducing the difficulty of the installation operation. The second connection section 132 is connected to the second lead-out section 131, and is perpendicular to the second lead-out section 131 or approximately perpendicular to the second lead-out section 131. The second connection section 133 is provided on the second connection section 132, and the second connection section 133 protrudes along the axial direction of the stator winding 200. The second connection section 133 is used for welding and connecting with the lead-out wire of the V-phase winding.
[0047] The third phase busbar 140 includes a third lead-out section 141 and a third connecting section 142. The third lead-out section 141 extends in the axial direction of the stator winding 200 and is used to connect to the terminal of the device outside the motor (such as a motor controller). In this embodiment, the third lead-out section 141 has a bent section at one end away from the third connecting section 142, and a third connecting hole 1411 is provided on the bent section. The stator busbar assembly 100 also includes a third nut 180, which is fixed to the third lead-out section 141 and corresponds to the position of the third connecting hole 1411, that is, the third connecting hole 1411 is coaxial with the through hole of the third nut 180. In this embodiment, the third nut 180 is a pressure riveted nut, which is fixed to the third lead-out section 141 by a riveting process. In some embodiments, the third nut 180 can be a conventional nut, which is fixed to the third lead-out section 141 by welding. In some embodiments, the third lead-out section 141 may not have a bending section, and the third connection hole 1411 is directly provided on the third lead-out section 141. Thus, the connection terminal of the device outside the motor can be conveniently connected to the third lead-out section 141 by bolts, reducing the difficulty of the installation operation. The third connection section 142 is connected to the third lead-out section 141, and is perpendicular to the third lead-out section 141 or approximately perpendicular to the third lead-out section 141. The third connection section 142 is provided with a third welding leg 143, which protrudes along the axial direction of the stator winding 200, and the third welding leg 143 is used for welding and connecting with the lead wire of the W phase winding.
[0048] In this embodiment, the length of the first connecting segment 122 is smaller than that of the second connecting segment 132, and the length of the second connecting segment 132 is smaller than that of the third connecting segment 142. The first connecting segment 122 is at least partially spaced apart from the second connecting segment 132 in the radial direction of the stator winding 200, and the third connecting segment 142 is at least partially spaced apart from the second connecting segment 132 in the axial direction of the stator winding 200. Specifically, the first connecting segment 122 is spaced apart from a portion of the second connecting segment 132 close to the second lead-out segment 131 in the radial direction of the stator winding 200; the second connecting segment 132 is spaced apart from a portion of the third lead-out segment 141 close to the third lead-out segment 141 in the radial direction of the stator winding 200. That is, in the radial direction of the stator winding 200, the first connecting segment 122 is at least partially located outside the second connecting segment 132, and in the axial direction of the stator winding 200, the third connecting segment 142 is at least partially located above the second connecting segment 132. The first phase bus 120, the second phase bus 130, and the third phase bus 140 are divided into two layers, inner and outer, in the axial direction, and divided into two layers, upper and lower, in the radial direction, so that the axial and radial space can be effectively utilized. While meeting the minimum electrical clearance requirement, the axial space occupied by the stator bus assembly 100 can be effectively reduced, and the axial height and volume of the motor having the stator bus assembly 100 can be reduced.
[0049] In this embodiment, the stator busbar assembly 100 further includes a star point busbar 150, which is fixedly connected to the insulating member 110 and is insulated from the first phase busbar 120, the second phase busbar 130 and the third phase busbar 140 by the insulating member 110, wherein the star point busbar 150 is at least partially located on the side of the first phase busbar 120 away from the second phase busbar 130. The star point busbar 150 includes a busbar body 151 and a fourth welding leg 152, a fifth welding leg 153 and a sixth welding leg 154 arranged at intervals on the busbar body 151. The busbar body 151 is in an arc shape, and its center coincides with the central axis of the stator winding 200, and the fourth welding leg 152, the fifth welding leg 153 and the sixth welding leg 154 all protrude along the axial direction of the stator winding 200. The busbar body 151 is partially located on the side of the first connection section 122 away from the second connection section 132, that is, in the radial direction of the stator winding 200, the second connection section 132, the first connection section 122 and the busbar body 151 are sequentially arranged from the inside to the outside, so that the radial space can be effectively utilized and the axial space occupied by the stator busbar assembly 100 can be reduced. In this embodiment, the star point busbar 150 is a copper busbar. It should be noted that the star point busbar 150 can also be a busbar made of other materials, and this application does not limit this.
[0050] In this embodiment, the first welding leg 123, the second connecting section 133 and the third welding leg 143 are located on the same circumference, the center of the circumference coincides with the central axis of the stator winding 200, and the angle between the first welding leg 123 and the second connecting section 133 (i.e., the interval on the circumference) is equal to the angle between the second connecting section 133 and the third welding leg 143. It should be noted that the term "located on the same circumference" here means that at least a part is located on the same circumference, and being located on the same circumference means that the height of the part in the axial direction of the stator winding 200 is equal. Through such an arrangement, the length of the three-phase copper bar can be relatively uniform, so that the current in each branch of the stator three-phase winding is balanced, the three-phase resistance is balanced, and it is convenient to perform automated welding. The first welding leg 123, the second connecting section 133 and the third welding leg 143 are located on the same circumference by bending at least one of the first connecting section 122, the second connecting section 132 and the third connecting section 142 in the axial direction or radial direction, and extending the length of at least one of the first welding leg 123, the second connecting section 133 and the third welding leg 143. The fourth welding leg 152, the fifth welding leg 153 and the sixth welding leg 154 are respectively adjacent to the first welding leg 123, the second connecting section 133 and the third welding leg 143 and are located outside the first welding leg 123, the second connecting section 133 and the third welding leg 143 in the radial direction. The fourth welding leg 152, the fifth welding leg 153 and the sixth welding leg 154 are also located on the same circumference, the center of the circumference coincides with the central axis of the stator winding 200, and the angle between the fourth welding leg 152 and the fifth welding leg 153 is equal to the angle between the sixth welding leg 154 and the seventh welding leg.
[0051] In this embodiment, the positions corresponding to the first welding leg 123, the second connecting section 133 and the third welding leg 143 on the insulating member 110 are all provided with hollow parts, and the hollow parts are used for the lead wires of the stator winding 200 to pass through so as to be welded with the first welding leg 123, the second connecting section 133 and the third welding leg 143. The edges of the hollow parts are provided with reinforcing ribs, and the reinforcing ribs are used to enhance the structural strength of the insulating member 110 and play an isolation role. Taking the second connecting section 133 as an example, the positions corresponding to the second connecting section 133 on the insulating member 110 are all provided with hollow parts, and the edges of the hollow parts on both sides in the circumferential direction are respectively provided with the first reinforcing ribs 111 and the second reinforcing ribs 112, and the edges of the hollow parts on the outer sides in the radial direction are provided with the third reinforcing ribs 113, and the third reinforcing ribs 112 can isolate the second connecting section 133 and the lead wires corresponding thereto from the fifth welding leg 153 and the lead wires corresponding thereto. The reinforcing ribs at the first welding leg 123 and the third welding leg 143 are similar and will not be described again here.
[0052] In this embodiment, the insulating member 110 is an injection molded member, and the first phase busbar 120, the second phase busbar 130, and the third phase busbar 140 are combined with the insulating member 110 during injection molding. The insulating member 110 partially covers the first phase busbar 120, partially covers the second phase busbar 130, partially covers the third phase busbar 140, and partially covers the star point busbar 150, so that it is fixedly connected to the insulating member 110. In addition, the insulating member 110 partially covers the first nut 160, partially covers the second nut 170, and partially covers the third nut 180, so that it is tightly combined with the first phase busbar 120, the second phase busbar 130, and the third phase busbar 140, respectively, so as to improve the overall anti-seismic performance.
[0053] The insulating member 110 may be provided with a positioning groove, which partially exposes at least one of the first phase busbar 120, the second phase busbar 130 and the third phase busbar 140, so as to position and fix them during injection molding, and prevent the busbars from contacting each other during injection molding, causing the stator assembly to fail. Figure 4 In this embodiment, the insulating member 110 is provided with a first positioning groove 114, a second positioning groove 115 and a third positioning groove 116, the first positioning groove 114 partially exposes the third connecting section 142 in the third phase busbar 140, the second positioning groove 115 partially exposes the second connecting section 132 in the second phase busbar 130, and the third positioning groove 116 partially exposes the busbar body 151 in the star point busbar 150. In some other embodiments, the insulating member 110 may also be provided with a fourth positioning groove, and the fourth positioning groove may partially expose the first connecting section 122 in the first phase busbar 120.
[0054] In this embodiment, the insulating member 110 has a step portion on the side facing the stator winding 200, and the step portion is located on the outer side of the stator winding 200 in the radial direction. The inner wall surface of the step portion is an arc surface and fits with the outer edge of the stator winding 200 in the radial direction, so that during the assembly process of the stator busbar assembly 100 and the stator winding 200, the step portion can be used to accurately position the stator busbar assembly 100 and the stator winding 200 in the axial and radial directions, and it is easy to realize automated production. After the welding foot on the busbar is welded to the lead wire on the stator winding 200, the step portion can play a role in fixing and limiting, so that the welding of the welding foot and the lead wire is more stable, and the welding part is not easy to loosen.
[0055] According to the stator busbar assembly 100 of the present application, the overall structure is relatively simple and easy to process, which can save material and processing costs and is also convenient for mass production. In addition, the busbar is installed in the axial direction of the stator winding 200, and the busbar occupies a small axial space of the stator assembly, thereby making the stator assembly compact, and further facilitating the arrangement of the stator assembly in the motor.
[0056] See attached Figure 5 In another embodiment of the present application, the stator busbar assembly includes a first-phase busbar 120, a second-phase busbar 130, a third-phase busbar 140, an insulating member 110', a first nut 160, a second nut 170 and a third nut 180, but does not include a star-point busbar 150, and the star-point busbar 150 is provided separately and is not fixedly connected to the insulating member 110'. The first-phase busbar 120, the second-phase busbar 130 and the third-phase busbar 140 are all fixedly connected to the insulating member and insulated from each other by the insulating member, wherein the first-phase busbar 120 is at least partially spaced apart from the second-phase busbar 130 in the radial direction of the stator winding, and the second-phase busbar 130 is at least partially spaced apart from the third-phase busbar 140 in the axial direction of the stator winding. The specific structures of the first phase busbar 120 , the second phase busbar 130 , the third phase busbar 140 , the first nut 160 , the second nut 170 and the third nut 180 and their specific arrangement in the insulating member 110 ′ are the same as those in the above embodiment and will not be repeated here.
[0057] The present application also provides a motor, which includes the stator bus assembly as described above. The motor can be a flat wire motor or other types of motors. The motor with the stator bus assembly can have a smaller axial size and a smaller volume.
[0058] The present application also provides a drive assembly, which includes the motor as described above.
[0059] The present application also provides a vehicle, which includes the drive assembly as described above.
[0060] Although example embodiments have been described herein with reference to the accompanying drawings, it should be understood that the above example embodiments are merely exemplary and are not intended to limit the scope of the present application to this. Those of ordinary skill in the art may make various changes and modifications therein without departing from the scope and spirit of the present application. All these changes and modifications are intended to be included within the scope of the present application as required by the appended claims.
[0061] In the description provided herein, a large number of specific details are described. However, it is understood that the embodiments of the present application can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.
[0062] Similarly, it should be understood that in order to streamline the present application and help understand one or more of the various utility model aspects, in the description of the exemplary embodiments of the present application, the various features of the present application are sometimes grouped together into a single embodiment, figure, or description thereof. However, the method of the present application should not be interpreted as reflecting the following intention: the claimed application requires more features than the features clearly stated in each claim. More specifically, as reflected in the corresponding claims, the inventive point is that the corresponding technical problem can be solved with features less than all the features of a single disclosed embodiment. Therefore, the claims following the specific embodiment are hereby explicitly incorporated into the specific embodiment, wherein each claim itself serves as a separate embodiment of the present application.
[0063] It will be understood by those skilled in the art that, except for mutually exclusive features, all features disclosed in this specification (including the accompanying claims, abstracts and drawings) and all processes or units of any method or device disclosed in this specification may be combined in any combination. Unless otherwise expressly stated, each feature disclosed in this specification (including the accompanying claims, abstracts and drawings) may be replaced by an alternative feature that provides the same, equivalent or similar purpose.
[0064] In addition, those skilled in the art will appreciate that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present application and form different embodiments. For example, in the claims, any one of the claimed embodiments can be used in any combination.
[0065] It should be noted that the above-mentioned embodiments illustrate rather than limit the invention and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims.
Claims
1. A stator busbar assembly, characterized in that: It includes a first-phase busbar, a second-phase busbar, a third-phase busbar and an insulating member; The first phase busbar, the second phase busbar, and the third phase busbar are all fixedly connected to the insulating member and insulated from each other by the insulating member, wherein the first phase busbar, the second phase busbar, and the third phase busbar are all used to connect with the lead-out wires of the stator winding, the first phase busbar is at least partially spaced apart from the second phase busbar in the radial direction of the stator winding, and the second phase busbar is at least partially spaced apart from the third phase busbar in the axial direction of the stator winding.
2. The stator busbar assembly according to claim 1, characterized in that: The first phase busbar comprises a first lead-out section and a first connecting section, the first lead-out section extends along the axial direction of the stator winding, the first connecting section is provided with a first welding leg, and the first welding leg protrudes along the axial direction of the stator winding; The second phase busbar comprises a second lead-out section and a second connecting section, the second lead-out section extends along the axial direction of the stator winding, the second connecting section is provided with a second welding leg, and the second welding leg protrudes along the axial direction of the stator winding; The third phase busbar comprises a third lead-out section and a third connecting section, wherein the third lead-out section extends along the axial direction of the stator winding, and the third connecting section is provided with a third welding foot, and the third welding foot protrudes along the axial direction of the stator winding; The first connecting segment is at least partially spaced apart from the second connecting segment in the radial direction of the stator winding, and the third connecting segment is at least partially spaced apart from the second connecting segment in the axial direction of the stator winding.
3. The stator busbar assembly according to claim 2, characterized in that: The stator bus assembly also includes a star-point bus, which is fixedly connected to the insulating member and is insulated from the first phase bus, the second phase bus and the third phase bus by the insulating member, wherein the star-point bus is at least partially located on a side of the first phase bus away from the second phase bus.
4. The stator busbar assembly according to claim 3, characterized in that: The star-point busbar is provided with a fourth weld leg, a fifth weld leg and a sixth weld leg at intervals, and the fourth weld leg, the fifth weld leg and the sixth weld leg all protrude along the axial direction of the stator winding, and the fourth weld leg, the fifth weld leg and the sixth weld leg are respectively adjacent to the first weld leg, the second weld leg and the third weld leg.
5. The stator busbar assembly according to claim 2, characterized in that: The first weld leg, the second weld leg and the third weld leg are located on the same circumference, the center of the circle coincides with the central axis of the stator winding, and the angle between the first weld leg and the second weld leg is equal to the angle between the second weld leg and the third weld leg.
6. The stator busbar assembly according to claim 2, characterized in that: The insulating member is provided with hollow portions at positions corresponding to the first welding leg, the second welding leg and the third welding leg, and the edges of the hollow portions are provided with reinforcing ribs.
7. The stator busbar assembly according to claim 2, characterized in that: The first lead-out section, the first lead-out section and the third lead-out section are respectively provided with a first connection hole, a second connection hole and a third connection hole; The stator bus assembly also includes a first nut, a second nut and a third nut, which are respectively fixed to the first lead-out section, the first lead-out section and the third lead-out section, and correspond to the positions of the first connecting hole, the second connecting hole and the third connecting hole, respectively.
8. The stator busbar assembly according to any one of claims 1 to 7, characterized in that: The insulating member is an injection-molded member, and the insulating member partially covers the first-phase busbar, partially covers the second-phase busbar, and partially covers the third-phase busbar.
9. The stator busbar assembly according to claim 1, characterized in that: The insulating member is provided with a positioning groove, and the positioning groove partially exposes at least one of the first phase busbar, the second phase busbar and the third phase busbar.
10. The stator busbar assembly according to claim 1, characterized in that: The insulating member has a step portion on a side facing the stator winding.
11. A motor, characterized in that: It comprises the stator busbar assembly according to any one of claims 1-10.
12. A drive assembly, characterized in that: Comprising the motor as claimed in claim 11.
13. A vehicle, characterized in that: Comprising the drive assembly as claimed in claim 12.