Busbar assembly, stator, motor, electric driving system and vehicle

Abstract

The utility model belongs to the technical field of motors, and particularly relates to a busbar assembly, a stator, a motor, an electric driving system and a vehicle. The busbar assembly comprises a three-phase busbar, a framework and an elastic piece, and the three-phase busbar is installed on the framework; the elastic piece is arranged on the framework, and the elastic piece is used for abutting against a stator winding. By arranging the elastic piece on the framework and abutting against the stator winding, the busbar assembly can be elastically supported, the shock resistance of the busbar assembly is improved, the risk that welding spots of the busbar assembly crack is reduced, and the reliability of the welding spots of the busbar assembly is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor technical field especially relates to a busbar assembly, stator, motor, electric drive system and vehicle. BACKGROUND

[0002] The stator is an important component of the motor. The stator includes a stator winding, a neutral copper bar and a three-phase copper bar. The stator winding is provided with a three-phase copper bar welding point, a neutral copper bar welding point and a stator winding welding point, which are respectively used to connect adjacent copper wires of the three-phase copper bar, the neutral copper bar and the stator winding.

[0003] In the prior art, the three-phase copper bar and the stator winding are hard connected, i.e. connected only by welding. The reliability of the welding point connection can only be ensured by welding parameters. In actual operation, there is a risk of cantilever swing of the three-phase copper bar and cracking of the welding point, which affects the reliability of the busbar assembly welding point. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a busbar assembly, stator, motor, electric drive system and vehicle, which can improve the shock resistance of the busbar assembly, reduce the risk of cracking of the busbar assembly welding point and improve the reliability of the busbar assembly welding point.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] The busbar assembly comprises:

[0007] A three-phase busbar;

[0008] A framework, wherein the three-phase busbar is mounted on the framework;

[0009] An elastic member provided on the framework, wherein the elastic member is used to abut against the stator winding.

[0010] As a preferred technical solution of the busbar assembly, a groove is formed in the framework, and the elastic member is partially arranged in the groove.

[0011] As a preferred technical solution of the busbar assembly, the elastic member and the groove are in interference fit.

[0012] As a preferred technical solution of the busbar assembly, a support rib is arranged on the periphery of the elastic member, and the support rib is in interference abutment against the inner wall of the groove.

[0013] As a preferred technical solution of the busbar assembly, the number of the elastic members is multiple, and the multiple elastic members are distributed at intervals along the length extension direction of the framework.

[0014] As the preferred technical scheme of the busbar assembly, the three-phase busbar and the neutral busbar are arranged on the upper and lower sides of the skeleton.

[0015] As the preferred technical scheme of the busbar assembly, the skeleton, the three-phase busbar and the neutral busbar are integrally injection molded.

[0016] As the preferred technical scheme of the busbar assembly, the three-phase busbar includes a U-phase busbar, a V-phase busbar and a W-phase busbar, the U-phase busbar, the V-phase busbar and the W-phase busbar are arranged along a first circular arc segment, the neutral busbar extends along a second circular arc segment, the first circular arc segment and the second circular arc segment are concentric, the first circular arc segment and the second circular arc segment are adapted to the outer periphery of the stator winding, and the first circular arc segment and the second circular arc segment partially overlap each other.

[0017] As the preferred technical scheme of the busbar assembly, the U-phase busbar, the V-phase busbar and the W-phase busbar are distributed in the same layer in the axial direction of the stator winding.

[0018] As the preferred technical scheme of the busbar assembly, the total number of layers of the three-phase busbar and the neutral busbar in the axial direction of the stator winding is two.

[0019] The motor includes the busbar assembly according to any one of the above schemes, and three-phase outgoing lines of the stator winding are respectively welded to the three-phase busbar.

[0020] The motor includes the stator according to the above scheme.

[0021] The electric drive system includes the motor according to the above scheme.

[0022] The vehicle includes the electric drive system according to the above scheme.

[0023] The motor includes the busbar assembly according to any one of the above schemes, and three-phase outgoing lines of the stator winding are respectively welded to the three-phase busbar.

[0024] The utility model provides a kind of busbar assembly, including three-phase busbar, skeleton and elastic piece, three-phase busbar is installed on skeleton;Elastic piece is set on skeleton, and elastic piece is used to abut with stator winding.By setting elastic piece on skeleton and abutting with stator winding, the busbar assembly can be elastically supported, the shock resistance of busbar assembly is improved, the risk of busbar assembly welding point cracking is reduced, and the reliability of busbar assembly welding point is improved.

[0025] The utility model also provides a kind of stator, including stator winding and the busbar assembly described above, and three-phase outgoing lines of stator winding are respectively welded to three-phase busbar.By setting the above busbar assembly, the risk of busbar assembly and stator winding between welding point cracking can be reduced, the reliability of busbar assembly and stator winding between welding point is improved, and the life of stator is improved.

[0026] The utility model also provides a motor, including the stator as described above, through set above described stator, can promote the life of motor.

[0027] The utility model also provides an electric drive system, including the motor as described above, through set above described motor, can promote the life of electric drive system.

[0028] The utility model also provides a vehicle, including the electric drive system as described above, through set above described electric drive system, can promote the life of vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is the structure schematic diagram of busbar assembly provided by the utility model embodiment;

[0030] Figure 2 It is the structure schematic diagram of three-phase busbar and neutral busbar related in the utility model embodiment;

[0031] Figure 3 It is the structure schematic diagram of skeleton related in the utility model embodiment;

[0032] Figure 4 It is the structure schematic diagram of elastic piece related in the utility model embodiment;

[0033] Figure 5 It is the structure schematic diagram of skeleton and elastic piece related in the utility model embodiment;

[0034] Figure 6 It is the local schematic diagram of skeleton and elastic piece related in the utility model embodiment;

[0035] Figure 7 It is the structure schematic diagram of busbar assembly and stator winding related in the utility model embodiment.

[0036] In the drawing:

[0037] 10, three-phase busbar;11, W-phase busbar;111, third main body part;112, W-phase input end;12, V-phase busbar;121, second main body part;122, V-phase input end;13, U-phase busbar;131, first main body part;132, U-phase input end;20, neutral busbar;21, fourth main body part;22, first wiring end group;23, second wiring end group;24, third wiring end group;30, skeleton;31, U-phase via hole;32, V-phase via hole;33, W-phase via hole;34, first neutral via hole;35, second neutral via hole;36, third neutral via hole;37, recess;40, elastic piece;41, support rib;

[0038] 100, stator winding. DETAILED DESCRIPTION

[0039] The utility model will be described in further detail below in connection with the drawings and embodiments. It can be understood that the specific embodiments described herein are merely intended to explain the utility model and not to limit the utility model. In addition, it should be noted that only the parts related to the utility model are shown in the drawings for ease of description, not all the structures.

[0040] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0041] In the utility model, unless otherwise explicitly specified and limited, the first feature "on" or "below" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0042] In the description of the embodiment, the terms "up", "down", "right", etc. orientation or position relationship is based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0043] As shown in Figures 1 to 7 The utility model provides a busbar assembly, including three -phase busbar 10, skeleton 30 and elastic piece 40, three -phase busbar 10 installs on skeleton 30, elastic piece 40 sets up on skeleton 30, and elastic piece 40 is used for abutting with stator winding 100. By setting up elastic piece 40 on skeleton 30 and abutting with stator winding 100, the busbar assembly can be elastically supported, the shock resistance of the busbar assembly is improved, the risk of busbar assembly welding point cracking is reduced, and the reliability of busbar assembly welding point is improved.

[0044] Specifically, referring to Figure 2 , the three-phase busbar 10 includes a U-phase busbar 13, a V-phase busbar 12, and a W-phase busbar 11. The U-phase busbar 13 includes a first main body 131 and a U-phase input end 132 arranged on the first main body 131. The V-phase busbar 12 includes a second main body 121 and a V-phase input end 122 arranged on the second main body 121. The W-phase busbar 11 includes a third main body 111 and a W-phase input end 112 arranged on the third main body 111. The U-phase input end 132 is used to connect a U-phase outgoing line of the stator winding 100. The V-phase input end 122 is used to connect a V-phase outgoing line of the stator winding 100. The W-phase input end 112 is used to connect a W-phase outgoing line of the stator winding 100. The U-phase input end 132, the V-phase input end 122, and the W-phase input end 112 each include a plurality of pins. In this embodiment, the U-phase input end 132, the V-phase input end 122, and the W-phase input end 112 each include two pins. There can be more than two pins, which is determined according to the structure of the stator winding 100 and is not limited to this embodiment. The U-phase busbar 13, the V-phase busbar 12, and the W-phase busbar 11 can be copper busbars, aluminum busbars, or others, and the material thereof is not limited herein.

[0045] The busbar assembly further includes a neutral busbar 20 mounted to the framework 30. The neutral busbar 20 includes a fourth main body 21 and three terminal groups arranged on the fourth main body 21. The three terminal groups are a first terminal group 22, a second terminal group 23, and a third terminal group 24. The first terminal group 22 is located between the U-phase input end 132 and the V-phase input end 122 and is used to connect a neutral conductor of a U-phase winding of the stator winding 100. The second terminal group 23 is located between the V-phase input end 122 and the W-phase input end 112 and is used to connect a neutral conductor of a V-phase winding of the stator winding 100. The third terminal group 24 is located on a side of the W-phase input end 112 away from the V-phase input end 122 and is used to connect a neutral conductor of a W-phase winding of the stator winding 100. The first terminal group 22, the second terminal group 23, and the third terminal group 24 each include a plurality of pins. In this embodiment, the first terminal group 22, the second terminal group 23, and the third terminal group 24 each include two pins. There can be more than two pins, which is determined according to the structure of the stator winding and is not limited to this embodiment. The neutral busbar 20 can be a copper busbar, an aluminum busbar, or others, and the material thereof is not limited herein.

[0046] Referring to Figure 3 , in combination with Figure 1 and Figure 2The skeleton 30 is integrally formed by injection molding with the skeleton 20, the three-phase busbar 10, and the neutral busbar 20. The skeleton 30 is formed with U-phase through holes 31, V-phase through holes 32, and W-phase through holes 33. The U-phase through holes 31 are used for the U-phase input terminals 132 to pass through the skeleton 30, and the number of the U-phase through holes 31 is equal to and corresponds to the number of the pins included in the U-phase input terminals 132. The V-phase through holes 32 are used for the V-phase input terminals 122 to pass through the skeleton 30, and the number of the V-phase through holes 32 is equal to and corresponds to the number of the pins included in the V-phase input terminals 122. The W-phase through holes 33 are used for the W-phase input terminals 112 to pass through the skeleton 30, and the number of the W-phase through holes 33 is equal to and corresponds to the number of the pins included in the W-phase input terminals 112. The skeleton 30 is also formed with a first neutral through hole 34, a second neutral through hole 35, and a third neutral through hole 36. The first neutral through hole 34 is used for the first terminal group 22 to pass through the skeleton 30, and the number of the first neutral through hole 34 is equal to and corresponds to the number of the pins included in the first terminal group 22. The second neutral through hole 35 is used for the second terminal group 23 to pass through the skeleton 30, and the number of the second neutral through hole 35 is equal to and corresponds to the number of the pins included in the second terminal group 23. The third neutral through hole 36 is used for the third terminal group 24 to pass through the skeleton 30, and the number of the third neutral through hole 36 is equal to and corresponds to the number of the pins included in the third terminal group 24.

[0047] The wall thickness of the skeleton 30 is 1.5 mm-2 mm. Alternatively, the wall thickness of the skeleton can be 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, or 2 mm. The wall thickness of the skeleton is uniformly set.

[0048] Referring to Figure 2In the embodiment, the three-phase busbar 10 and the neutral busbar 20 are located on the upper and lower sides of the framework 30, that is, the three-phase busbar 10 and the neutral busbar 20 are stacked and distributed, thereby reducing the volume and occupied space of the busbar assembly. Specifically, the first main body part 131 of the U-phase busbar 13, the second main body part 121 of the V-phase busbar 12, the third main body part 111 of the W-phase busbar 11, and the fourth main body part 21 of the neutral busbar 20 are stacked and distributed. Further, the U-phase busbar 13, the V-phase busbar 12, and the W-phase busbar 11 are arranged at intervals along a first circular arc segment, the neutral busbar 20 extends along a second circular arc segment, the first circular arc segment and the second circular arc segment are concentric, the first circular arc segment and the second circular arc segment are adapted to the outer periphery of the stator winding, and the first circular arc segment and the second circular arc segment partially overlap each other, that is, the three-phase busbar 10 and the neutral busbar 20 are distributed in a circumferential staggered manner, thereby avoiding a complex arrangement of the busbar assembly. Further, the U-phase busbar 13, the V-phase busbar 12, and the W-phase busbar 11 are distributed in the same layer in the axial direction of the stator winding, and the total number of layers of the three-phase busbar 10 and the neutral busbar 20 in the axial direction of the stator winding is two, of which the neutral busbar 20 is one layer, and the U-phase busbar 13, the V-phase busbar 12, and the W-phase busbar 11 are one layer, thereby further reducing the volume and occupied space of the busbar assembly. Of course, the three-phase busbar 10 and the neutral busbar 20 can also be a multi-layer structure of more than two layers, and are not limited to the embodiment.

[0049] Referring to Figures 3 to 6 In the embodiment, the recess 37 is formed on the framework 30, and the elastic member 40 is partially arranged in the recess 37. By arranging the recess 37, the elastic member 40 can be positioned, so that the elastic member 40 is more stable, and the elastic member 40 and the framework 30 are integrated, thereby facilitating the assembly of the busbar assembly and other components. Of course, the elastic member 40 can also be directly fixed on the outer wall of the framework 30 by means of adhesion or fastener connection, and is not limited to the embodiment. Further, the elastic member 40 and the recess 37 are in interference fit, so that the fixation of the elastic member 40 is simple and firm. Of course, the elastic member 40 can also be connected to the groove bottom or groove wall of the recess 37 by adhesion, and is not limited to the embodiment. Further, the elastic member 40 is provided with a support rib 41 on the side, and the support rib 41 interferes with the inner wall of the recess 37, that is, the elastic member 40 interferes with the recess 37 through the support rib 41, thereby reducing the assembly difficulty of the elastic member 40.

[0050] Further, the framework 30 includes a body part and an elastic member mounting part, the elastic member mounting part is protrudingly arranged relative to the body part, and the recess 37 is arranged on the elastic member mounting part. By the above arrangement, the weight of the framework 30 can be reduced, and the consumption of the framework 30 can be reduced. Optionally, the number of the elastic member mounting parts is multiple, and the multiple recesses 37 are correspondingly arranged on the multiple elastic member mounting parts. The embodiment shows that the number of the elastic member mounting parts and the recesses 37 is three, which can also be more than three or less than three, and is not limited to the embodiment.

[0051] The support rib 41 is arranged on at least one side wall of the elastic member 40.

[0052] The support rib 41 is integrally formed with the elastic member 40, so as to reduce the number of parts, simplify the assembly steps, and make the structure more stable.

[0053] Further, the number of the elastic members 40 is multiple, and the multiple elastic members 40 are distributed along the length direction of the skeleton 30, so as to further improve the anti-vibration performance of the busbar assembly.

[0054] As shown in Figure 7 The utility model also provides a motor, including stator winding 100 and above-mentioned busbar assembly, three phase outgoing line of stator winding is connected with three phase busbar 10 welding respectively, and the neutral conductor of three phase winding in stator winding is connected with three terminal groups of neutral busbar 20 welding respectively.

[0055] The utility model also provides an electric drive system, including above-mentioned motor.

[0056] The utility model also provides a vehicle, including above-mentioned electric drive system.

[0057] Obviously, the above embodiment of the utility model is only for clear illustration of the utility model, and is not the limitation of the embodiment of the utility model. For ordinary skilled person in the art, can make various obvious changes, re-adjustment and replacement without departing from the protection scope of the utility model. Here, it is not necessary and impossible to enumerate all the embodiments. Any modification, equivalent replacement and improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A busbar assembly, characterized in that, include: Three-phase busbar (10); A frame (30) is provided, on which the three-phase busbar (10) is mounted; An elastic element (40) is disposed on the frame (30) and is used to abut against the stator winding (100).

2. The busbar assembly according to claim 1, characterized in that, The frame (30) has a groove (37) and the elastic element (40) is partially disposed in the groove (37).

3. The busbar assembly according to claim 2, characterized in that, The elastic element (40) and the groove (37) are interference fit.

4. The busbar assembly according to claim 3, characterized in that, The elastic element (40) is provided with a support rib (41) on its periphery, and the support rib (41) is in interference fit with the inner wall of the groove (37).

5. The busbar assembly according to claim 1, characterized in that, The number of elastic elements (40) is multiple, and the multiple elastic elements (40) are distributed at intervals along the length extension direction of the skeleton (30).

6. The busbar assembly according to any one of claims 1-5, characterized in that, Also includes: The neutral busbar (20) is installed on the frame (30), and the three-phase busbar (10) and the neutral busbar (20) are located on the upper and lower sides of the frame (30).

7. The busbar assembly according to claim 6, characterized in that, The frame (30), the three-phase busbar (10) and the neutral busbar (20) are injection molded into a single structure.

8. The busbar assembly according to claim 6, characterized in that, The three-phase busbar (10) includes a U-phase busbar (13), a V-phase busbar (12), and a W-phase busbar (11). The U-phase busbar (13), the V-phase busbar (12), and the W-phase busbar (11) are arranged at intervals along a first arc segment. The neutral busbar (20) extends along a second arc segment. The first arc segment and the second arc segment are concentric. The first arc segment and the second arc segment are adapted to the outer periphery of the stator winding. The first arc segment and the second arc segment partially overlap each other.

9. The busbar assembly according to claim 8, characterized in that, The U-phase busbar (13), the V-phase busbar (12), and the W-phase busbar (11) are distributed in the same layer in the axial direction of the stator winding.

10. The busbar assembly according to claim 9, characterized in that, The three-phase busbar (10) and the neutral busbar (20) have a total of two layers in the axial direction of the stator winding.

11. A stator, characterized in that, It includes a stator winding (100) and a busbar assembly as described in any one of claims 1-10, wherein the three-phase outputs of the stator winding (100) are respectively welded to the three-phase busbar (10).

12. An electric motor, characterized in that, Including the stator as described in claim 11.

13. An electric drive system, characterized in that, Including the motor as described in claim 12.

14. A vehicle, characterized in that, Including the electric drive system as described in claim 13.

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