Connecting structure and motor

Abstract

The embodiment of the utility model provides a connecting structure and a motor. The connecting structure comprises a copper bar assembly and an insulating support, the copper bar assembly comprises a U-phase copper bar, a W-phase copper bar, a V-phase copper bar, a star-point copper bar and a gap-bridge copper bar which are arranged on the insulating support, the first direction is the length direction of the insulating support, and the second direction is intersected with the first direction, so that the first direction and the second direction are perpendicular to each other. A U-phase copper bar, a W-phase copper bar and a V-phase copper bar are arranged at intervals along a first direction, and a star-point copper bar is arranged on one side of at least one of the U-phase copper bar, the W-phase copper bar and the V-phase copper bar along a second direction. The projection of the star point copper bar on the insulation support along the second direction is at least partially overlapped with the projection of at least one of the U-phase copper bar, the W-phase copper bar and the V-phase copper bar on the insulation support along the second direction, so that the length of the connection structure along the first direction can be reduced, and the overall size of the connection structure is reduced. And the space occupation of the connecting structure in the motor is reduced.

Description

Technical Field

[0001] The present application belongs to the field of motor technology, and in particular, relates to a connection structure and a motor. Background Art

[0002] With the increasing power density requirements of new energy vehicle motors, flat wire motors are increasingly being used. The armature ends of flat wire motors, especially the three-phase output terminals of stators, are usually electrically connected to external devices through a connection structure.

[0003] In the traditional connection structure, electrical connection is usually performed through a wire harness. However, as the electrical connection relationship of the three-phase output end of the stator becomes more complicated, the number of wire harnesses and the types of wires in the connection structure are increasing, and the difficulty of assembly is increasing. Therefore, in order to reduce the difficulty of assembly and the number of wire harnesses and the types of wires, the types and number of stator winding wires can be simplified by using three-phase copper bars, star point copper bars and bridge copper bars in the connection structure. However, due to the large volume of the above connection structure, it occupies a large space in the motor. Utility Model Content

[0004] The embodiments of the present application provide a connection structure and a motor, which can reduce the space occupied by the connection structure in the motor.

[0005] In a first aspect, an embodiment of the present application provides a connection structure, including an insulating bracket and a copper bar assembly, the copper bar assembly including a U-phase copper bar, a V-phase copper bar, a W-phase copper bar and a star-point copper bar respectively arranged on the insulating bracket, the U-phase copper bar, the V-phase copper bar and the W-phase copper bar are arranged at intervals along a first direction, the star-point copper bar is arranged on one side of at least one of the U-phase copper bar, the V-phase copper bar and the W-phase copper bar along a second direction, the first direction is the length direction of the insulating bracket, and the second direction is arranged to intersect with the first direction.

[0006] In some embodiments, the copper bar assembly also includes at least one of a first connecting copper bar, a second connecting copper bar, and a third connecting copper bar, the first connecting copper bar is used to connect two U-phase winding branches of the stator of the motor, the second connecting copper bar is used to connect two W-phase winding branches of the stator, and the third connecting copper bar is used to connect two V-phase winding branches of the stator.

[0007] In some embodiments, the first connecting copper bar and the U-phase copper bar are stacked along a third direction, part of the V-phase copper bar is located on one side of the first connecting copper bar along the second direction, and the first pin of the first connecting copper bar is bent along the third direction toward a side away from the U-phase copper bar, and the third direction is the width direction of the insulating bracket.

[0008] In some embodiments, the second connecting copper bar is arranged on one side of the first connecting copper bar along the first direction, at least part of the W-phase copper bar is located on one side of the second connecting copper bar along the second direction, and the second pin of the second connecting copper bar is bent toward the same side as the first pin.

[0009] In some embodiments, the third connecting copper bar is located between the first connecting copper bar and the V-phase copper bar along the second direction, the third connecting copper bar crosses the W-phase copper bar along the first direction, and the third pin of the third connecting copper bar is bent toward the same side as the first pin.

[0010] In some embodiments, the V-phase copper busbar includes a first conductive portion and a second conductive portion, the first conductive portion is arranged close to the U-phase copper busbar, the second conductive portion is arranged close to the W-phase copper busbar, the first conductive portion is located on one side of the U-phase copper busbar along the second direction, and the second conductive portion is bent along the second direction relative to the first conductive portion toward a side away from the first connecting copper busbar to form a first avoidance portion, and a portion of the third connecting copper busbar is located in the first avoidance portion.

[0011] In some embodiments, the third connecting copper bar includes a first sub-bar, part of the first sub-bar and part of the first connecting copper bar are stacked along the third direction, and the third pin of the first sub-bar bypasses the first connecting copper bar from the side of the first connecting copper bar close to the V-phase copper bar along the second direction, and extends to the side of the first connecting copper bar away from the U-phase copper bar along the third direction; and / or,

[0012] The third connecting copper bar includes a second sub-bar, part of which is located on a side of the first connecting copper bar close to the V-phase copper bar along the second direction, and the third pin of the second sub-bar is bent and extended to a side of the first connecting copper bar away from the U-phase copper bar along the third direction.

[0013] In some embodiments, the star-point copper bar is located on one side of the W-phase copper bar along the second direction, the star-point copper bar includes a third conductive portion and a fourth conductive portion, the third conductive portion is close to the U-phase copper bar along the first direction, the fourth conductive portion is away from the U-phase copper bar along the first direction, the projection of the W-phase copper bar on the bracket along the second direction at least partially overlaps with the projection of the third conductive portion on the bracket along the second direction, and the fourth conductive portion is bent relative to the third conductive portion along the second direction toward a side close to the W-phase copper bar.

[0014] In some embodiments, the fourth pin of the U-phase copper bar, the fifth pin of the V-phase copper bar, and the sixth pin of the W-phase copper bar respectively include an output end and two input ends, the input ends are bent toward the same side relative to the output ends along a third direction, the output end of the U-phase copper bar, the output end of the V-phase copper bar, and the output end of the W-phase copper bar are spaced apart along the first direction, the input end of the U-phase copper bar, the input end of the V-phase copper bar, and the input end of the W-phase copper bar are spaced apart along the first direction, and the third direction intersects with the first direction and the second direction, respectively.

[0015] In some embodiments, the input end and the output end both extend along the second direction, and / or the seventh pin of the star-point copper bus is spaced apart from the input end along the first direction.

[0016] In a second aspect, an embodiment of the present application provides a motor, comprising a stator and a connection structure of any of the above items, the stator comprising a U-phase winding branch, a V-phase winding branch and a W-phase winding branch; the U-phase copper bar, the V-phase copper bar and the W-phase copper bar are electrically connected to the U-phase winding branch, the V-phase winding branch and the W-phase winding branch in sequence, and the star-point copper bar is electrically connected to the U-phase winding branch, the V-phase winding branch and the W-phase winding branch, respectively.

[0017] The embodiment of the present application provides a connection structure and a motor. The connection structure includes a copper bar assembly and an insulating bracket, and the copper bar assembly includes a U-phase copper bar, a W-phase copper bar, a V-phase copper bar and a star point copper bar respectively arranged on the insulating bracket. Since the first direction is the length direction of the insulating bracket, and the second direction is arranged to intersect with the first direction, therefore, by arranging the U-phase copper bar, the W-phase copper bar and the V-phase copper bar at intervals along the first direction, and arranging the star point copper bar on one side of at least one of the U-phase copper bar, the W-phase copper bar and the V-phase copper bar along the second direction, the projection of the star point copper bar on the insulating bracket along the second direction can be made to overlap at least partially with the projection of at least one of the U-phase copper bar, the W-phase copper bar and the V-phase copper bar along the second direction on the insulating bracket, thereby reducing the length of the connection structure along the first direction, reducing the overall volume of the connection structure, and reducing the space occupied by the connection structure in the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0019] Figure 1 is an exploded diagram of a connection structure provided by some embodiments of the present application;

[0020] Figure 2 It is a structural schematic diagram of a copper busbar assembly of a connection structure provided in some embodiments of the present application;

[0021] Figure 3 is a top view of a copper busbar assembly provided in some embodiments of the present application;

[0022] Figure 4 is another structural schematic diagram of a copper busbar assembly provided in some embodiments of the present application;

[0023] Figure 5 It is an assembly diagram of the connection structure and the stator provided in some embodiments of the present application.

[0024] Description of Figure Numbers:

[0025] Connection structure 10; insulating bracket 11; U-phase copper bar 12; second main body 121; fourth pin 122; V-phase copper bar 13; first conductive part 131; second conductive part 132; fifth main body 133; fifth pin 134; W-phase copper bar; sixth main body 141; sixth pin 142; star point copper bar 15; third conductive part 151; fourth conductive part 152; seventh pin 153; first connecting copper bar 16; third sub-row 161; fourth sub-row 162; first main body 163; first pin 164; second connecting copper bar 17; fifth sub-row 171; sixth sub-row 172; third main body 173; second pin 174; third connecting copper bar 18; first sub-row 181; second sub-row 182; fourth main body 183; third pin 184; output end 191; input end 192; stator 20; first direction X; second direction Y; third direction Z. DETAILED DESCRIPTION

[0026] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present application and are not configured to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0027] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0028] In order to solve the problems in the prior art, the embodiment of the present application provides a connection structure and a motor. The connection structure provided by the embodiment of the present application is first introduced below.

[0029] Figure 1 It is an exploded diagram of the connection structure provided by some embodiments of the present application.

[0030] like Figure 1 As shown, in the first aspect, an embodiment of the present application provides a connection structure 10, including an insulating bracket 11 and a copper bar assembly, the copper bar assembly including a U-phase copper bar 12, a V-phase copper bar 13, a W-phase copper bar 14 and a star-point copper bar 15 respectively arranged on the insulating bracket 11, the U-phase copper bar 12, the V-phase copper bar 13, and the W-phase copper bar 14 are arranged at intervals along a first direction X, and the star-point copper bar 15 is arranged on one side of at least one of the U-phase copper bar 12, the V-phase copper bar 13, and the W-phase copper bar 14 along a second direction Y, the first direction X is the length direction of the insulating bracket 11, and the second direction Y is arranged to intersect with the first direction X.

[0031] The first direction X is the length direction of the insulating support 11, and the second direction Y can be the thickness direction of the insulating support 11. Of course, the second direction Y can also be the width direction of the insulating support 11, which is not limited in this embodiment. The insulating support 11 is used to carry the U-phase copper bar 12, the V-phase copper bar 13, the W-phase copper bar 14 and the star point copper bar 15, and ensure the insulation between the U-phase copper bar 12, the V-phase copper bar 13, the W-phase copper bar 14 and the star point copper bar 15. The insulating bracket 11 can be an injection molded bracket, and the insulating bracket 11 can be formed by an injection molding process. It can be understood that by placing the U-phase copper bar 12, the V-phase copper bar 13, the W-phase copper bar 14 and the star-point copper bar 15 in the injection mold respectively, and injecting the injection molding material into the injection mold, the injection molding material covers the U-phase copper bar 12, the V-phase copper bar 13, the W-phase copper bar 14 and the star-point copper bar 15, and exposes each pin of the U-phase copper bar 12, the V-phase copper bar 13, the W-phase copper bar 14 and the star-point copper bar 15, so that the insulating bracket 11 is formed after the injection molding material is solidified.

[0032] The U-phase copper bar 12 is used to connect the U-phase winding branch in the stator 20 of the motor and the external U-phase wiring harness. The fourth pin 122 of the U-phase copper bar 12 may include an input end 192 and an output end 191. The input end 192 of the U-phase copper bar 12 is connected to the U-phase winding branch, and the output end 191 of the U-phase copper bar 12 is connected to the external U-phase wiring harness. The V-phase copper bar 13 is used to connect the V-phase winding branch in the stator 20 of the motor and the external V-phase wiring harness. The fifth pin 134 of the V-phase copper bar 13 may include an input end 192 and an output end 191. The input end 192 of the V-phase copper bar 13 is connected to the V-phase winding branch, and the output end 191 of the V-phase copper bar 13 is connected to the external V-phase wiring harness. The W-phase copper bar 14 is used to connect the W-phase winding branch in the stator 20 of the motor and the external W-phase wiring harness. The sixth pin 142 of the W-phase copper bar 14 may include an input end 192 and an output end 191. The input end 192 of the W-phase copper bar 14 is connected to the W-phase winding branch, and the output end 191 of the W-phase copper bar 14 is connected to the external W-phase wiring harness. Optionally, the output ends 191 of the U-phase copper bar 12, the V-phase copper bar 13, and the W-phase copper bar 14 may be two or four. When the motor winding is a double branch, the input ends 192 of the U-phase copper bar 12, the V-phase copper bar 13, and the W-phase copper bar 14 may be two. When the motor winding is a four-branch, the input ends 192 of the U-phase copper bar 12, the V-phase copper bar 13, and the W-phase copper bar 14 may be four.

[0033] The embodiment of the present application provides a connection structure 10 and a motor. The connection structure 10 includes a copper bar assembly and an insulating bracket 11. The copper bar assembly includes a U-phase copper bar 12, a W-phase copper bar 14, a V-phase copper bar 13 and a star-point copper bar 15 respectively arranged on the insulating bracket 11. Since the first direction X is the length direction of the insulating bracket 11, and the second direction Y is arranged to intersect with the first direction X, therefore, by arranging the U-phase copper bar 12, the W-phase copper bar 14, and the V-phase copper bar 13 at intervals along the first direction X, and arranging the star-point copper bar 15 along the second direction Y on one side of at least one of the U-phase copper bar 12, the W-phase copper bar 14, and the V-phase copper bar 13, the projection of the star-point copper bar 15 along the second direction Y on the insulating bracket 11 can be made to at least partially overlap with the projection of at least one of the U-phase copper bar 12, the W-phase copper bar 14, and the V-phase copper bar 13 along the second direction Y on the insulating bracket 11, thereby reducing the length of the connection structure 10 along the first direction X, reducing the overall volume of the connection structure 10, and reducing the space occupied by the connection structure 10 in the motor.

[0034] Moreover, in the present embodiment, the U-phase copper busbar 12, the V-phase copper busbar 13, the W-phase copper busbar 14 and the star point copper busbar 15 are used to replace the wiring harness at the stator 20, so that the number and types of wiring harnesses can be reduced, the complexity of the stator line type and the cost investment can be reduced, the production difficulty can be reduced, and the production efficiency can be improved. At the same time, the use of copper busbars instead of wiring harnesses can also solve the problem that some special wiring harnesses have poor versatility and need to be specially customized.

[0035] In addition, in the connection structure 10 of the present embodiment, since the U-phase copper bar 12, the V-phase copper bar 13, the W-phase copper bar 14 and the star point copper bar 15 are all connected to the insulating bracket 11, and the U-phase copper bar 12, the V-phase copper bar 13, the W-phase copper bar 14 and the star point copper bar 15 are all set correspondingly at the position of the insulating bracket 11, therefore, when it is necessary to assemble the connection structure 10 at the stator 20, it is only necessary to clamp the insulating bracket 11 to the preset assembly position, and the output terminal of the winding of the stator 20 and the pins of each copper bar can be welded to realize the connection between the connection structure 10 and the winding, without the need to clamp each copper bar separately, thereby reducing the clamping frequency and improving the assembly efficiency. In addition, by reasonably arranging the positions of each copper bar on the insulating bracket 11, the gap between each copper bar can be reduced as much as possible to minimize the overall volume of the connection structure 10. At the same time, improving the support of the insulating bracket 11 for each copper bar can also improve the stability of the connection structure 10 after being connected to the winding.

[0036] Optionally, the insulating bracket 11 extends in a ring shape along the circumference of the stator 20 , that is, the length direction of the insulating bracket 11 is parallel to the circumference of the stator 20 , so as to facilitate the assembly of the connection structure 10 on the stator 20 .

[0037] Optionally, at least one positioning hole is formed on the insulating bracket 11 to facilitate positioning during the assembly process of the connecting structure 10 , thereby improving assembly accuracy and efficiency.

[0038] Optionally, at least one waist-shaped hole is formed on the insulating bracket 11 for clamping by a clamping tool during the assembly process of the connecting structure 10 .

[0039] Figure 2 It is a schematic diagram of the structure of the copper busbar assembly of the connection structure provided in some embodiments of the present application.

[0040] like Figure 2 As shown, in some embodiments, the copper bar assembly also includes at least one of a first connecting copper bar 16, a second connecting copper bar 17 and a third connecting copper bar 18. The first connecting copper bar 16 is used to connect two U-phase winding branches of the stator 20 of the motor, so that the two branches of the U-phase winding are phase-balanced and there is no branch circulating current. The second connecting copper bar 17 is used to connect two W-phase winding branches of the stator 20, so that the two branches of the W-phase winding are phase-balanced and there is no branch circulating current. The third connecting copper bar 18 is used to connect two V-phase winding branches of the stator 20, so that the two branches of the V-phase winding are phase-balanced and there is no branch circulating current.

[0041] Specifically, the first connecting copper bar 16, the second connecting copper bar 17 and the third connecting copper bar 18 can be respectively arranged on the insulating bracket 11, supported and insulated by the insulating bracket 11. When the motor is a dual-branch motor, two U-phase winding branches, two V-phase winding branches and two W-phase winding branches are arranged in the stator 20 of the motor. At this time, by setting the copper bar assembly to include at least one of the first connecting copper bar 16, the second connecting copper bar 17 and the third connecting copper bar 18, when the copper bar assembly includes the first connecting copper bar 16, the two U-phase winding branches are connected by the first connecting copper bar 16, when the copper bar assembly includes the second connecting copper bar 17, the two V-phase winding branches are connected by the second connecting copper bar 17, and when the copper bar assembly includes the third connecting copper bar 18, the two W-phase winding branches are connected by the third connecting copper bar 18. It can be understood that when the copper bar assembly only includes one or two of the first connecting copper bar 16, the second connecting copper bar 17 and the third connecting copper bar 18, the winding branches in the stator 20 that are not connected by the copper bar can continue to be connected through the wiring harness to ensure mutual conduction between the winding branches of the same phase. For example, when the copper bar assembly only includes the first connecting copper bar 16, the two V-phase winding branches and the two W-phase winding branches in the stator 20 can be connected by wiring harnesses respectively.

[0042] In this embodiment, by integrating at least one of the first connecting copper bar 16, the second connecting copper bar 17 and the third connecting copper bar 18 in the connecting structure 10, the two U-phase winding branches of the motor stator 20 are connected by the first connecting copper bar 16, the two W-phase winding branches of the motor stator 20 are connected by the second connecting copper bar 17, and the two V-phase winding branches of the motor stator 20 are connected by the third connecting copper bar 18, so that the types of copper bars integrated in the connecting structure 10 can be increased, the number and types of wiring harnesses at the motor are further reduced, and the difficulty of assembly is reduced.

[0043] Optionally, the first connecting copper bar 16 may include a third sub-row 161 and a fourth sub-row 162, the third sub-row 161 is respectively connected to the head ends of the two U-phase winding branches, and the fourth sub-row 162 is respectively connected to the tail ends of the two U-phase winding branches; and / or, the second connecting copper bar 17 may include a fifth sub-row 171 and a sixth sub-row 172, the fifth sub-row 171 is respectively connected to the head ends of the two W-phase winding branches, and the sixth sub-row 172 is respectively connected to the tail ends of the two W-phase winding branches.

[0044] Please continue to refer to Figure 2 In some embodiments, the first connecting copper bar 16 and the U-phase copper bar 12 are stacked along the third direction Z, part of the V-phase copper bar 13 is located on one side of the first connecting copper bar 16 along the second direction Y, and the first pin 164 of the first connecting copper bar 16 is bent along the third direction Z toward a side away from the U-phase copper bar 12, and the third direction Z is the width direction of the insulating bracket 11.

[0045] Specifically, the rest of the V-phase copper bar 13 except its fifth pin 134 can be located on one side of the first connecting copper bar 16 along the second direction Y, and the fifth pin 134 of the V-phase copper bar 13 can be located on one side of the first connecting copper bar 16 along the first direction X or the third direction Z.

[0046] In this embodiment, by reasonably arranging the position of the first connecting copper bar 16, on the basis of connecting two U-phase winding branches through the first connecting copper bar 16, the positional relationship between the copper bars in the connection structure 10 can be made more compact, so as to reduce the volume of the connection structure 10 and reduce the space occupied by the connection structure 10. At the same time, the first pin 164 of the first connecting copper bar 16 is bent along the third direction Z toward the side away from the U-phase copper bar 12. Compared with setting the first pin 164 to bend along the third direction Z toward the U-phase copper bar 12, the gap between the first connecting copper bar 16 and the U-phase copper bar 12 can be reduced, the volume of the connection structure 10 can be further reduced, and the position interference between the first pin 164 and the U-phase copper bar 12 can also be avoided.

[0047] Optionally, the first connecting copper bar 16 may include a first main body 163 and a first pin 164 connected to the first main body 163, the U-phase copper bar 12 may include a second main body 121 and a fourth pin 122 connected to the second main body 121, and the first connecting copper bar 16 and the U-phase copper bar 12 are stacked along the third direction Z, that is, the first main body 163, the second main body 121, at least part of the first pin 164 and at least part of the fourth pin 122 are stacked along the third direction Z. The number of the first pin 164 may be two, and the two first pins 164 are respectively located on both sides of the first main body 163 along the first direction X, and the two first pins 164 are connected to the two U-phase winding branches one by one.

[0048] Optionally, when the first connecting copper row 16 includes a third sub-row 161 and a fourth sub-row 162, the third sub-row 161 and the fourth sub-row 162 may respectively include a first main body 163 and a first pin 164, and the first main body 163 of the third sub-row 161 and the first main body 163 of the fourth sub-row 162 are stacked along the third direction Z, the first main body 163 of the third sub-row 161 may be located between the first main body 163 of the fourth sub-row 162 and the second main body 121, the first pin 164 of the third sub-row 161 and the first pin 164 of the fourth sub-row 162 may be spaced apart along the first direction X, at which time the length of the first main body 163 of the third sub-row 161 along the first direction X may be greater than the length of the first main body 163 of the fourth sub-row 162 along the first direction X.

[0049] Figure 3 is a top view of a copper busbar assembly provided in some embodiments of the present application.

[0050] like Figure 2 and Figure 3 As shown, in some embodiments, the second connecting copper bar 17 is arranged on one side of the first connecting copper bar 16 along the first direction X, at least a portion of the W-phase copper bar 14 is located on one side of the second connecting copper bar 17 along the second direction Y, and the second pin 174 of the second connecting copper bar 17 is bent toward the same side as the first pin 164.

[0051] The second connecting copper bar 17 is located on one side of the W-phase copper bar 14 along the second direction Y. The projection of the W-phase copper bar 14 along the second direction Y on the insulating support 11 may partially overlap with the projection of the second connecting copper bar 17 along the second direction Y on the insulating support 11 .

[0052] In this embodiment, by arranging the second connecting copper bar 17 to be located on one side of the first connecting copper bar 16 along the first direction X, at least part of the W-phase copper bar 14 is located on one side of the second connecting copper bar 17 along the second direction Y, so that by rationally arranging the position of the second connecting copper bar 17, the arrangement of each copper bar in the connection structure 10 can be made more compact on the basis of connecting two V-phase winding branches through the second connecting copper bar 17, so as to further reduce the space utilization of the connection structure 10. In addition, since the second pin 174 of the second connecting copper bar 17 is bent toward the same side as the first pin 164, that is, the first pin 164 and the second pin 174 are both bent along the third direction Z toward the side away from the U-phase copper bar 12, the assembly of the connection structure 10 and the connection between the pin and the winding can be facilitated.

[0053] Optionally, the second connecting copper bar 17 and the first connecting copper bar 16 can be symmetrically arranged relative to the midline of the two along the first direction X, so that by using copper bars of the same shape and size as the first connecting copper bar 16 and the second connecting copper bar 17, the commonality of the first connecting copper bar 16 and the second connecting copper bar 17 can be improved, without the need to separately process the first connecting copper bar 16 and the second connecting copper bar 17, so as to reduce the production difficulty and production cost of the connection structure 10.

[0054] Exemplarily, when the first connecting copper bus 16 includes a first main body 163 and a first pin 164, the second connecting copper bus 17 may include a third main body 173 and a second pin 174, the shape and size of the first main body 163 are the same as the shape and size of the first main body 163, and the shape and size of the first pin 164 are the same as the shape and size of the second pin 174; or, when the third sub-row 161 and the fourth sub-row 162 of the first connecting copper bus 16 respectively include the first main body 163 and the first pin 164, the fifth sub-row 171 and the sixth sub-row 172 of the second connecting copper bus 17 may respectively include the third main body 173 and the second pin 174.

[0055] Figure 4This is another schematic diagram of the structure of the copper busbar assembly provided in some embodiments of the present application.

[0056] like Figure 4 As shown, in some embodiments, the third connecting copper bar 18 is located between the first connecting copper bar 16 and the V-phase copper bar 13 along the second direction Y, the third connecting copper bar 18 crosses the W-phase copper bar 14 along the first direction X, and the third pin 184 of the third connecting copper bar 18 is bent toward the same side as the first pin 164.

[0057] In this embodiment, by arranging the third connecting copper bar 18 between the first connecting copper bar 16 and the V-phase copper bar 13 along the second direction Y, and the third connecting copper bar 18 crossing the W-phase copper bar 14 along the first direction X, the position of the third connecting copper bar 18 is reasonably arranged, and the positional relationship between the copper bars in the connection structure 10 can be made more compact on the basis of connecting two W-phase winding branches through the third connecting copper bar 18, so as to further reduce the overall volume of the connection structure 10. In addition, the third pins 184 of the third connecting copper bar 18 are bent toward the same side, which can facilitate the assembly of the connection structure 10 and the connection between the pins and the winding.

[0058] It can be understood that, in some embodiments, the first pin 164, the second pin 174 and the third pin 184 are all bent toward the side of the first connecting copper bus 16 along the third direction Z away from the U-phase copper bus 12. At this time, the terminals in each winding of the stator 20 for connecting with the first pin 164, the second pin 174 and the third pin 184 can be led out from the corresponding positions, so that the layout of each pin in the connecting structure 10 and the layout of each terminal in the winding can be more neat and clear, so as to further reduce the difficulty of assembly.

[0059] Please continue to refer to Figure 2 In some embodiments, the V-phase copper busbar 13 includes a first conductive portion 131 and a second conductive portion 132, the first conductive portion is arranged close to the U-phase copper busbar 12, and the second conductive portion is arranged close to the W-phase copper busbar 14, the first conductive portion 131 is located on one side of the U-phase copper busbar 12 along the second direction Y, and the second conductive portion 132 is bent along the second direction Y relative to the first conductive portion 131 toward a side away from the first connecting copper busbar 16 to form a first avoidance portion, and a portion of the third connecting copper busbar 18 is located in the first avoidance portion, so that the third connecting copper busbar 18 is avoided by the first avoidance portion to avoid position interference with the third connecting copper busbar 18 and ensure the insulation relationship with the third connecting copper busbar 18.

[0060] Please continue to refer to Figure 4In some embodiments, the third connecting copper bar 18 includes a first sub-row 181, a portion of the first sub-row 181 and a portion of the first connecting copper bar 16 are stacked along the third direction Z, and the third pin 184 of the first sub-row 181 bypasses the first connecting copper bar 16 from the side of the first connecting copper bar 16 close to the V-phase copper bar 13 along the second direction, and extends to the side of the first connecting copper bar 16 away from the U-phase copper bar 12 along the third direction Z; and / or, the third connecting copper bar 18 includes a second sub-row 182, a portion of the second sub-row 182 is located on the side of the first connecting copper bar 16 close to the V-phase copper bar 13 along the second direction, and the third pin 184 of the second sub-row 182 is bent and extended to the side of the first connecting copper bar 16 away from the U-phase copper bar 12 along the third direction Z.

[0061] The first sub-row 181 and / or the second sub-row 182 may include a fourth main body 183 and a third pin 184 connected to the fourth main body 183. The fourth main body 183 of the first sub-row 181 may be stacked with the first connecting copper bar 16 along the third direction Z, and part of the third pin 184 of the first sub-row 181 is located between the first connecting copper bar 16 and the V-phase copper bar 13 along the second direction Y, and the remaining third pin 184 of the first sub-row 181 is located on the side of the first connecting copper bar 16 away from the U-phase copper bar 12 of the fourth main body 183 of the first sub-row 181 along the third direction Z, that is, the third pin 184 of the first sub-row 181 bypasses the first connecting copper bar 16 from the side of the first connecting copper bar 16 close to the V-phase copper bar 13 along the second direction, and extends to the side of the first connecting copper bar 16 away from the U-phase copper bar 12. In the first sub-row 181 and / or the second sub-row 182 , the number of the third pins 184 may be two, and the two third pins 184 are respectively located on both sides of the fourth main body 183 along the first direction X, and the two third pins 184 are connected to the two V-phase copper bars 13 in a one-to-one correspondence.

[0062] The fourth main body 183 of the second sub-row 182 is located on the side of the first connecting copper bar 16 close to the V-phase copper bar 13 along the second direction, and part of the third pin 184 of the second sub-row 182 is located on the side of the first connecting copper bar 16 close to the V-phase copper bar 13 along the second direction, and the remaining part of the third pin 184 of the second sub-row 182 is located on the side of the first connecting copper bar 16 away from the U-phase copper bar 12 along the third direction Z. That is to say, the third pin 184 of the second sub-row 182 is bent and extended from the side of the first connecting copper bar 16 close to the V-phase copper bar 13 along the second direction to the side of the first connecting copper bar 16 away from the U-phase copper bar 12 along the third direction Z.

[0063] In this embodiment, the structure of the connection structure 10 can be made more compact by reasonably arranging the positions of the first sub-row 181 and / or the second sub-row 182. In addition, by setting the third pin 184 of the first sub-row 181 and / or the third pin 184 of the second sub-row 182 to extend to the side of the first connecting copper bar 16 away from the U-phase copper bar 12 along the third direction Z, that is, the third pin 184 of the first sub-row 181, the first pin 164 of the first connecting copper bar 16, and the second pin 174 of the second connecting copper bar 17 can be located on the same side, and / or, the third pin 184 of the second sub-row 182, the first pin 164 of the first connecting copper bar 16, and the second pin 174 of the second connecting copper bar 17 can be located on the same side, thereby further reducing the difficulty of assembly.

[0064] Please continue to refer to Figure 1 In some embodiments, the star-point copper bar 15 is located on one side of the W-phase copper bar 14 along the second direction Y, and the star-point copper bar 15 includes a third conductive portion 151 and a fourth conductive portion 152. The third conductive portion 151 is close to the U-phase copper bar 12 along the first direction, and the fourth conductive portion 152 is away from the U-phase copper bar 12 along the first direction. The projection of the W-phase copper bar 14 along the second direction Y on the bracket at least partially overlaps with the projection of the third conductive portion 151 along the second direction Y on the bracket. The third conductive portion 151 is bent relative to the fourth conductive portion 152 along the second direction Y toward the side close to the W-phase copper bar 14, thereby further improving the structural compactness of the connection structure 10 and reducing the volume of the connection structure 10.

[0065] Please continue to refer to Figure 1 and Figure 2 In some embodiments, the fourth pin 122 of the U-phase copper bar 12, the fifth pin 134 of the V-phase copper bar 13, and the sixth pin 142 of the W-phase copper bar 14 respectively include an output end 191 and two input ends 192, the input end 192 is bent toward the same side relative to the output end 191 along the third direction Z, the output end 191 of the U-phase copper bar 12, the output end 191 of the V-phase copper bar 13, and the output end 191 of the W-phase copper bar 14 are arranged at intervals along the first direction X, the input end 192 of the U-phase copper bar 12, the input end 192 of the V-phase copper bar 13, and the input end 192 of the W-phase copper bar 14 are arranged at intervals along the first direction X, and the third direction Z is arranged to intersect with the first direction X and the second direction Y respectively.

[0066] Specifically, the V-phase copper busbar 13 may include a fifth main body 133 and a fifth pin 134 connected to the fifth main body 133, and the two input ends 192 of the fifth pin 134 may be located on one side of the output end 191 of the fifth pin 134 along the first direction X; the W-phase copper busbar 14 may include a sixth main body 141 and a sixth pin 142 connected to the sixth main body 141, and the two input ends 192 of the sixth pin 142 are located on both sides of the output end 191 of the sixth pin 142 along the first direction X; in the U-phase copper busbar 12, the two input ends 192 of the fourth pin 122 may be located on both sides of the output end 191 of the fourth pin 122 along the first direction X, respectively.

[0067] It can be understood that when the motor is a dual-branch motor, in the fourth pin 122 of the U-phase copper bar 12, the two input terminals 192 are respectively connected to the two U-phase winding branches in the stator 20, and the output terminal 191 is connected to the external U-phase wiring harness; in the fifth pin 134 of the V-phase copper bar 13, the two input terminals 192 are respectively connected to the two V-phase winding branches in the stator 20, and the output terminal 191 is connected to the external V-phase wiring harness; in the sixth pin 142 of the W-phase copper bar 14, the two input terminals 192 are respectively connected to the two W-phase winding branches in the stator 20, and the output terminal 191 is connected to the external W-phase wiring harness.

[0068] In this embodiment, the input end 192 is bent toward the same side relative to the output end 191 along the third direction Z, the output end 191 of the U-phase copper bar 12, the output end 191 of the V-phase copper bar 13, and the output end 191 of the W-phase copper bar 14 are arranged at intervals along the first direction X, and the input end 192 of the U-phase copper bar 12, the input end 192 of the V-phase copper bar 13, and the input end 192 of the W-phase copper bar 14 are arranged at intervals along the first direction X, so that the positions of the pins in the U-phase copper bar 12, the V-phase copper bar 13, and the W-phase copper bar 14 are reasonably set to facilitate the assembly of the connection structure 10.

[0069] Please continue to refer to Figure 1 In some embodiments, the input end 192 and the output end 191 both extend along the second direction Y, and / or the seventh pin 153 of the star point copper bus 15 is spaced apart from the input end 192 along the first direction X.

[0070] It can be understood that in the stator 20, the terminals of each winding branch usually extend along the second direction Y. Therefore, in this embodiment, by setting the input end 192 and the output end 191 of each pin in the U-phase copper bar 12, the V-phase copper bar 13 and the W-phase copper bar 14 to extend along the second direction Y, each pin in the connection structure 10 and each terminal in each winding branch can be partially stacked along the first direction X or the third direction Z, thereby increasing the contact area between the pin in the connection structure 10 and the terminal in the winding branch, and improving the welding reliability. In addition, since the seventh pin 153 of the star point copper bar 15 needs to connect each winding branch in the stator 20, the seventh pin 153 and the input end 192 are arranged at intervals along the first direction X, so that the seventh pin 153 can be connected to the winding branch together with the input end 192, thereby improving the assembly efficiency.

[0071] Optionally, the star point copper bus 15 may include a seventh main body and a seventh pin 153 connected to the seventh main body, the seventh pin 153 includes two U-phase connection ends, two V-phase connection ends and two W-phase connection ends, the two U-phase connection ends are respectively connected to two U-phase winding branches, the two V-phase connection ends are respectively connected to two V-phase winding branches, and the two W-phase connection ends are respectively connected to two W-phase winding branches, thereby realizing parallel connection of each winding branch.

[0072] Optionally, part of the first sub-row 181 can be bent along the third direction Z relative to the rest of the first sub-row 181 toward the first connecting copper bar 16 to form a second avoidance portion, and the output end 191 of the W-phase copper bar 14 can be located in the second avoidance portion to make the structure of the connection structure 10 more compact.

[0073] Optionally, the first pin 164 of the first connecting copper bus 16, the second pin 174 of the second connecting copper bus 17, and the third pin of the third connecting copper bus 18 can all extend along the second direction Y, so that the first pin 164, the second pin 174, and the third pin 184 are partially stacked with the terminals in the winding branch along the first direction X or the third direction Z, thereby increasing the contact area between the above-mentioned pins and the terminals in the winding branch and improving the welding reliability.

[0074] Figure 5 It is an assembly diagram of the connection structure and the stator provided in some embodiments of the present application.

[0075] like Figure 5As shown, in the second aspect, the embodiment of the present application provides a motor, including a stator 20 and any of the above connection structures 10, the stator 20 includes a U-phase winding branch, a V-phase winding branch and a W-phase winding branch; the U-phase copper bar 12, the V-phase copper bar 13 and the W-phase copper bar 14 are electrically connected to the U-phase winding branch, the V-phase winding branch and the W-phase winding branch in sequence, and the star point copper bar 15 is electrically connected to the U-phase winding branch, the V-phase winding branch and the W-phase winding branch respectively. The motor provided by the embodiment of the present application has the technical effect of the technical solution of the connection structure 10 in any of the above embodiments, and the structures that are the same or corresponding to the above embodiments and the explanation of terms are not repeated here.

[0076] The above is only a specific implementation of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of this application.

Claims

1. A connection structure, characterized in that: include: Insulation bracket; A copper bar assembly comprises a U-phase copper bar, a V-phase copper bar, a W-phase copper bar and a star-point copper bar respectively arranged on the insulating support, wherein the U-phase copper bar, the V-phase copper bar and the W-phase copper bar are arranged at intervals along a first direction, and the star-point copper bar is arranged on one side of at least one of the U-phase copper bar, the V-phase copper bar and the W-phase copper bar along a second direction, wherein the first direction is the length direction of the insulating support, and the second direction is arranged to intersect with the first direction.

2. The connection structure according to claim 1, characterized in that: The copper bar assembly also includes at least one of a first connecting copper bar, a second connecting copper bar and a third connecting copper bar, wherein the first connecting copper bar is used to connect two U-phase winding branches of the stator of the motor, the second connecting copper bar is used to connect two W-phase winding branches of the stator, and the third connecting copper bar is used to connect two V-phase winding branches of the stator.

3. The connection structure according to claim 2, characterized in that: The first connecting copper bar and the U-phase copper bar are stacked along a third direction, part of the V-phase copper bar is located on one side of the first connecting copper bar along the second direction, and the first pin of the first connecting copper bar is bent along the third direction toward a side away from the U-phase copper bar, and the third direction is the width direction of the insulating bracket.

4. The connection structure according to claim 3, characterized in that: The second connecting copper bar is arranged on one side of the first connecting copper bar along the first direction, at least part of the W-phase copper bar is located on one side of the second connecting copper bar along the second direction, and the second pin of the second connecting copper bar is bent toward the same side as the first pin.

5. The connection structure according to claim 3, characterized in that: The third connecting copper bar is located between the first connecting copper bar and the V-phase copper bar along the second direction, the third connecting copper bar crosses the W-phase copper bar along the first direction, and the third pin of the third connecting copper bar is bent toward the same side as the first pin.

6. The connection structure according to claim 5, characterized in that: The V-phase copper bar includes a first conductive portion and a second conductive portion, the first conductive portion is arranged close to the U-phase copper bar, the second conductive portion is arranged close to the W-phase copper bar, the first conductive portion is located on one side of the U-phase copper bar along the second direction, the second conductive portion is bent relative to the first conductive portion along the second direction toward a side away from the first connecting copper bar to form a first avoidance portion, and a portion of the third connecting copper bar is located in the first avoidance portion.

7. The connection structure according to claim 5, characterized in that: The third connecting copper bar includes a first sub-bar, part of the first sub-bar and part of the first connecting copper bar are stacked along the third direction, the third pin of the first sub-bar bypasses the first connecting copper bar from the side of the first connecting copper bar close to the V-phase copper bar along the second direction, and extends to the side of the first connecting copper bar away from the U-phase copper bar along the third direction; and / or, The third connecting copper bar includes a second sub-bar, part of the second sub-bar is located on a side of the first connecting copper bar close to the V-phase copper bar along the second direction, and the third pin of the second sub-bar is bent and extended to a side of the first connecting copper bar away from the U-phase copper bar along the third direction.

8. The connection structure according to any one of claims 1 to 7, characterized in that: The star-point copper bar is located at one side of the W-phase copper bar along the second direction, the star-point copper bar comprises a third conductive portion and a fourth conductive portion, the third conductive portion is close to the U-phase copper bar along the first direction, the fourth conductive portion is away from the U-phase copper bar along the first direction, a projection of the W-phase copper bar on the bracket along the second direction at least partially overlaps with a projection of the third conductive portion on the bracket along the second direction, and the fourth conductive portion is bent relative to the third conductive portion along the second direction toward a side close to the W-phase copper bar.

9. The connection structure according to any one of claims 1 to 7, characterized in that: The fourth pin of the U-phase copper bar, the fifth pin of the V-phase copper bar, and the sixth pin of the W-phase copper bar respectively include an output end and two input ends, the input ends are bent toward the same side relative to the output ends along a third direction, the output end of the U-phase copper bar, the output end of the V-phase copper bar, and the output end of the W-phase copper bar are arranged at intervals along the first direction, the input end of the U-phase copper bar, the input end of the V-phase copper bar, and the input end of the W-phase copper bar are arranged at intervals along the first direction, and the third direction intersects with the first direction and the second direction, respectively.

10. The connection structure according to claim 9, characterized in that: The input end and the output end both extend along the second direction, and / or the seventh pin of the star point copper bus is spaced apart from the input end along the first direction.

11. A motor, characterized in that: include: A stator, comprising a U-phase winding branch, a V-phase winding branch and a W-phase winding branch; The connection structure according to any one of claims 1 to 10, wherein: The U-phase copper bar, the V-phase copper bar and the W-phase copper bar are electrically connected to the U-phase winding branch, the V-phase winding branch and the W-phase winding branch in sequence, and the star-point copper bar is electrically connected to the U-phase winding branch, the V-phase winding branch and the W-phase winding branch respectively.

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