Busbar, motor and vehicle

Abstract

The invention provides a busbar, a motor and a vehicle, and relates to the technical field of vehicle parts, the busbar comprises a star point copper bar and a plurality of phase copper bars which are arranged in a split mode, and each phase copper bar comprises a welding part of a plate-shaped structure and a connecting part used for being connected with an electrical element. The welding part of each phase copper bar is used for being connected with a plurality of phase outgoing lines of the corresponding phase winding in an attached mode, and the star point copper bars are used for being connected with all star point outgoing lines of the multi-phase winding in an attached mode. Therefore, the structural strength of the part, used for being welded with the phase outgoing line, on the phase copper bar can be improved, and meanwhile, the structure of the phase copper bar and even the busbar can be simplified.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle parts, and in particular to a bus, a motor and a vehicle. Background Art

[0002] In the motor system of new energy vehicles, the busbar plays the role of transmitting electrical energy from the battery to the drive motor and is an important part of the motor system. When producing the motor, the busbar is welded to the lead wire of the stator winding to achieve current transfer between the two.

[0003] However, in the related art, the bus has a complex structure and a large volume, which makes the stator envelope larger. The stator with a larger envelope has a larger resonance amplitude and frequency during the vibration process, which makes the bus prone to vibration breakage at the connection position. Summary of the invention

[0004] The problem solved by the present invention is how to prevent the busbar from breaking due to vibration.

[0005] In order to solve the above problems, the present invention provides a bus, a motor and a vehicle.

[0006] In a first aspect, the present invention provides a busbar comprising a star-point copper bar and a plurality of phase copper bars arranged in a split manner, the phase copper bar comprising a welding portion in a plate-like structure and a connecting portion for connecting to an electrical component, the welding portion of each phase copper bar being used for fitting and connecting to a plurality of phase lead wires of a corresponding phase winding, and the star-point copper bar being used for fitting and connecting to all the star-point lead wires of the multi-phase phase windings.

[0007] Optionally, the star-point copper bar is in a plate-like structure and is arranged parallel to the axial direction of the stator winding.

[0008] Optionally, the busbar further includes a first welding piece, and the welding portion and the plurality of phase lead wires of the corresponding phase winding are welded via the first welding piece;

[0009] And / or, the busbar further includes a second welding piece, and the star-point copper bar is welded to all the star-point lead-out wires of the multi-phase phase windings via the second welding piece.

[0010] Optionally, the busbar further includes an insulating coating, and the insulating coating is located at a fitting connection position between the welding portion and the phase lead wire and / or a fitting connection position between the star-point copper busbar and the star-point lead wire.

[0011] Optionally, the busbar further includes an insulating sleeve, which is disposed at a connection position between the welding portion and the phase lead-out line, and an inner surface of the insulating sleeve is in close contact with the welding portion and the phase lead-out line.

[0012] Optionally, the phase copper busbar comprises a first portion and a second portion which are vertically connected, an end of the first portion away from the second portion is configured as the welding portion, and an end of the second portion away from the first portion is configured as the connecting portion.

[0013] Optionally, the phase copper bar and / or the star point copper bar are formed by stamping laminated copper bars.

[0014] In a second aspect, the present invention provides a motor, comprising a multi-phase winding and a bus as described above, wherein the welding parts of the multiple phase copper bars of the bus are respectively fitted and connected to the phase lead wires of the multi-phase winding, and the star-point copper bar of the bus is fitted and connected to the star-point lead wires of the multi-phase winding.

[0015] Optionally, the phase winding of each phase includes multiple phase lead wires and multiple star point lead wires, the multiple phase lead wires of the phase winding of each phase are arranged close together and welded to the welding part of the corresponding phase copper bar, and the multiple star point lead wires of the phase winding of multiple phases are arranged close together and are all welded to the star point copper bar.

[0016] In a third aspect, the present invention provides a vehicle, comprising the bus as described above, or comprising the motor as described above.

[0017] The beneficial effects of the busbar, motor and vehicle of the present invention are: the star point copper bar can be connected to all the star point lead wires of multiple phase windings by welding, and the welding part of the phase copper bar can be connected to the phase lead wires of the corresponding phase winding by welding, so as to achieve current transmission. Moreover, compared with the use of the copper bar pin structure to achieve the fitting connection, the present invention sets the welding part of the phase copper bar as a plate-like structure to improve the structural strength of the part on the phase copper bar used for connecting with the phase lead wire, increase the contact area between the phase copper bar and the phase lead wire, and thus improve the strength of the connection part, avoid the busbar from vibrating and breaking, and at the same time, because the pin structure of the phase copper bar is cancelled, the structure of the phase copper bar and even the busbar is simpler and more compact, so as to reduce the envelope of the motor stator and reduce the weight and production cost of the busbar. Moreover, by arranging the star point copper bar and the multiple phase copper bars in a split type, the busbar is a split structure, which not only facilitates the independent design of the star point copper bar and the multiple phase copper bars, but also facilitates the separate design of the phase lead wires and the star point lead wires of the phase winding, so that there is no need to make additional insulation design for the phase lead wires and the star point lead wires, simplifying the structure of the motor stator. In addition, since the distribution positions of the phase lead wires of different stator windings may be different, the present invention can not only simplify the structure of the busbar by independently designing multiple phase copper bars, but also enable multiple phase copper bars to flexibly adapt to the wiring requirements of the phase lead wires of different stator windings, and have higher versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the assembly structure of the busbar and the phase winding in an embodiment of the present invention;

[0019] Figure 2 is a schematic diagram of the assembly structure of the busbar and the phase winding from another perspective in an embodiment of the present invention;

[0020] Figure 3 It is a structural schematic diagram of the welding position of the phase copper bar and the phase lead wire in an embodiment of the present invention;

[0021] Figure 4 It is a structural schematic diagram of the welding position of the star point copper busbar and the star point lead wire in an embodiment of the present invention;

[0022] Figure 5 It is a structural schematic diagram of an embodiment of the present invention in which an insulating sleeve is provided at the welding position of the phase copper busbar and the phase lead-out wire.

[0023] Description of reference numerals:

[0024] 1. Star point copper busbar; 2. Phase copper busbar; 21. Welding part; 22. Connecting part; 221. Connecting hole; 3. First welding piece; 4. Second welding piece; 5. Insulating sleeve; 600. Phase winding; 610. Phase lead wire; 620. Star point lead wire. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be interpreted as being limited to the embodiments described herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not intended to limit the scope of protection of the present invention.

[0026] The term "including" and its variations used in this document are open inclusions, that is, "including but not limited to"; the term "based on" means "based at least in part on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiments". The relevant definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc. mentioned in the present invention are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0027] It should be noted that the modifications of "one" and "plurality" mentioned in the present invention are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0028] In the related technology, the bus plays the role of transmitting electrical energy from the battery to the drive motor and is an important part of the motor system. When producing the motor, the bus is welded to the lead wire of the stator winding to achieve current transfer between the two. However, the current bus has a complex structure and a large volume, which makes the envelope of the stator larger. The stator with a large envelope has a larger resonance amplitude and frequency during the vibration process, which makes the bus easy to break at the connection part.

[0029] In view of the problems existing in the above-mentioned related technologies, the present invention provides a bus, a motor and a vehicle.

[0030] Combination Figure 1 and Figure 2 As shown, a busbar provided by an embodiment of the present invention includes a star-point copper bar 1 and a plurality of phase copper bars 2 which are arranged in a split manner, the phase copper bar 2 including a welding portion 21 in a plate-like structure and a connecting portion 22 for connecting to an electrical component, the welding portion 21 of each phase copper bar 2 is used for fitting and connecting to a plurality of phase lead wires 610 of a corresponding phase winding 600, and the star-point copper bar 1 is used for fitting and connecting to all star-point lead wires 620 of a multi-phase winding 600.

[0031] It should be noted that the stator winding of the motor includes a multi-phase winding 600, for example, a three-phase winding 600 including a U-phase winding, a V-phase winding and a W-phase winding. Each phase winding 600 includes multiple parallel branches, and the phase lead-out line 610 refers to the coil head end of each branch in the phase winding, and the star point lead-out line 620 refers to the coil tail end of each branch in the phase winding.

[0032] Specifically, the busbar is usually arranged at the end of the stator winding, and the busbar is a split structure, that is, the star point copper bar 1 and multiple phase copper bars 2 of the busbar are independently designed and arranged at intervals. The number of phase copper bars 2 corresponds to the number of phase windings 600 in the stator winding, and the number of star point copper bars 1 is usually set to one. For example, if the stator winding includes a three-phase phase winding 600, three phase copper bars 2 are provided. Multiple phase lead wires 610 of a phase winding 600 are welded and connected to a corresponding phase copper bar 2 to achieve current transfer; all star point lead wires 620 of multiple phase windings 600 are welded and connected to a star point copper bar 1 to achieve current transfer.

[0033] More specifically, the phase copper bar 2 mainly includes two parts, namely a welding portion 21 and a connecting portion 22, wherein the welding portion 21 of the phase copper bar 2 is not a pin structure corresponding one-to-one to the multiple phase lead wires 610 of the phase winding 600, but is a whole plate-like structure, for example, it can be a flat plate structure or a bent plate structure. The phase lead wires 610 are usually led out parallel to the axial direction of the stator winding. Therefore, when the welding portion 21 is a flat plate structure, the welding portion 21 can be set parallel to the axial direction of the stator winding. At this time, each phase lead wire 610 of the corresponding phase winding 600 is attached to the welding portion 21 and welded to the welding portion 21; when the welding portion 21 is a bent plate structure, such as Figure 1 As shown, the welding portion 21 has at least two bending sections, and one of the bending sections is arranged parallel to the axial direction of the stator winding, which is called the axial bending section. At this time, each phase lead wire 610 of the corresponding phase winding 600 is welded on the axial bending section of the welding portion 21. The connecting portion 22 of the phase copper bar 2 is usually also a plate-like structure, which is used to connect to the cable of electrical components such as an external power supply or an inverter to achieve current transfer. In addition, the star point copper bar 1 can be a plate-like structure or can be provided with a pin structure, which is not specifically limited here and can be selected and designed as needed in actual applications.

[0034] The busbar in this embodiment can be connected by welding the star point copper bar 1 to all the star point lead wires 620 of the multiple phase windings 600, and by welding the welding portion 21 of the phase copper bar 2 to the corresponding phase lead wires 610 of the phase winding 600, thereby realizing current transmission. Moreover, compared with the connection by using the copper bar pin structure, the present embodiment sets the welding portion 21 of the phase copper bar 2 as a plate-like structure to improve the structural strength of the part on the phase copper bar 2 used for connecting with the phase lead wire 610, increase the contact area between the phase copper bar 2 and the phase lead wire 610, thereby improving the strength of the connection part, and avoiding vibration breakage at the busbar connection part. At the same time, since the pin structure of the phase copper bar 2 is cancelled, the structure of the phase copper bar 2 and even the busbar is simpler and more compact, thereby reducing the envelope of the motor stator and reducing the weight and production cost of the busbar. Furthermore, by arranging the star point copper bar 1 and the multiple phase copper bars 2 in a split type, the busbar is a split structure, which not only facilitates the independent design of the star point copper bar 1 and the multiple phase copper bars 2, but also facilitates the separate design of the phase lead wire 610 and the star point lead wire 620 of the phase winding 600, so that there is no need to make additional insulation design for the phase lead wire 610 and the star point lead wire 620, simplifying the structure of the motor stator. In addition, since the distribution positions of the phase lead wires 610 of different stator windings may be different, this embodiment independently designs multiple phase copper bars 2, which not only simplifies the structure of the busbar, but also enables multiple phase copper bars 2 to flexibly adapt to the wiring requirements of the phase lead wires 610 of different stator windings, and has higher versatility.

[0035] Furthermore, the star point copper bar 1 and the plurality of phase copper bars 2 are arranged at intervals along the circumferential direction of the stator winding.

[0036] In this embodiment, the star point copper bar 1 and the multiple phase copper bars 2 are arranged at intervals along the circumferential direction of the stator winding, which can improve the convenience of the welding operation of the star point copper bar 1 and the phase copper bar 2, avoid short circuit connection between the two, and minimize the space occupied by the star point copper bar 1 and the phase copper bar 2 in the radial direction of the stator winding.

[0037] Optionally, combined Figure 3 As shown, the busbar further includes a first welding piece 3 , and the welding portion 21 is welded to a plurality of phase lead wires 610 of the corresponding phase winding 600 via the first welding piece 3 .

[0038] In this optional embodiment, the first welding plate 3 is usually a silver-copper welding plate, and the welding portion 21 of each phase copper busbar 2 is bonded and connected to the multiple phase lead wires 610 of the corresponding phase winding 600 through the first welding plate 3 by resistance welding. In this way, the welding strength and pulling strength at the bonding welding position between the two can be improved, and the risk of vibration fracture at the welding position can be reduced.

[0039] Furthermore, combined with Figure 1 As shown, the connection portion 22 is arranged parallel to the radial direction of the stator winding. Compared with the connection portion 22 being arranged parallel to the axial direction of the stator winding, this can reduce the space occupied by the busbar in the axial direction of the stator winding, thereby reducing the envelope of the motor stator.

[0040] Furthermore, combined with Figure 3 As shown, the connection part 22 is provided with a connection hole 221, and the connection part 22 is used to connect with the electrical component through a fastener such as a screw at the connection hole 221. In this way, the connection between the phase copper busbar 2 and the electrical component is realized, and the disassembly and assembly is convenient.

[0041] Furthermore, combined with Figure 1 As shown, in the circumferential direction of the stator winding, the size of the connection portion 22 is larger than the size of the welding portion 21. In this way, the contact area between the phase copper bar 2 and the electrical component can be increased to ensure the stability of the connection between the two. In addition, the connection portion 22 of the phase copper bar 2 usually extends along the radial direction of the stator winding, and the welding portion 21 is close to the central axis of the stator winding, and the connection portion 22 is far away from the central axis of the stator winding. Therefore, the connection portion 22 of the phase copper bar 2 can be set larger.

[0042] Optionally, combined Figure 4 As shown, the star point copper bar 1 is in a plate-like structure and is arranged parallel to the axial direction of the stator winding.

[0043] In this optional embodiment, the star point copper bar 1 is roughly a long arc plate structure extending along the circumference of the stator winding, and the arc plate structure is arranged parallel to the axial direction of the stator winding. Compared with the radial arrangement of the star point copper bar 1 of the plate-like structure parallel to the stator winding, the axial arrangement of the star point copper bar 1 parallel to the stator winding can make the star point lead wire 620 arranged along the axial direction of the stator winding be welded with the star point copper bar 1 without radial bending, thereby improving the convenience of the welding operation. Moreover, the star point copper bar 1 is not welded with the star point lead wire 620 using a pin structure, but all the star point lead wires 620 of the multi-phase winding 600 are directly welded to the star point copper bar 1 of the plate-like structure. In this way, the structural strength of the welding portion between the star point copper bus 1 and the star point lead wire 620 can be improved, the contact area between the star point copper bus 1 and the star point lead wire 620 can be increased, and the welding strength can be improved. At the same time, since the pin structure of the star point copper bus 1 is cancelled, the structure of the star point copper bus 1 is simpler and more compact, which can further simplify the structure of the bus, reduce the envelope of the motor stator, and reduce the weight and production cost of the bus.

[0044] Optionally, combined Figure 4 As shown, the busbar further includes a second welding piece 4 , and the star-point copper bar 1 and all the star-point lead-out wires 620 of the multi-phase winding 600 are welded via the second welding piece 4 .

[0045] In this optional embodiment, the second welding plate 4 is usually also a silver-copper welding plate. The star-point copper bus 1 is bonded and connected to all the star-point lead-out wires 620 of the multi-phase winding 600 through the second welding plate 4 by means of, for example, resistance welding or fusion welding. In this way, the welding strength and pulling strength at the bonding welding position between the two can be improved, and the risk of vibration fracture at the welding position can be reduced.

[0046] Optionally, the busbar further includes an insulating coating (not shown in the figure), which is located at the fitting connection position between the welding portion 21 and the phase lead 610 and / or the fitting connection position between the star point copper bus 1 and the star point lead 620.

[0047] In this optional embodiment, the insulating coating is generally an insulating varnish. After welding is completed, the welding position between the welding portion 21 and the phase lead wire 610 and the welding position between the star point copper bus 1 and the star point lead wire 620 can be insulated by coating the insulating coating. The coated welding parts have higher structural strength, which further improves the welding strength at the welding positions.

[0048] Optionally, combined Figure 5 As shown, the busbar further includes an insulating sleeve 5 , which is sleeved at the connection position between the welding portion 21 and the phase lead wire 610 , and the inner surface of the insulating sleeve 5 is tightly attached to the welding portion 21 and the phase lead wire 610 .

[0049] In this optional embodiment, the insulating sleeve 5 is generally a fluororubber insulating tube. After the welding of the phase copper bar 2 and the phase lead wire 610 of the stator winding is completed, the insulating sleeve 5 can be placed outside the welding position of the phase copper bar 2 and the phase lead wire 610 and shrunk so that the inner surface of the insulating sleeve 5 is tightly attached to the welding portion 21 and the phase lead wire 610 to insulate and protect the phase copper bar 2.

[0050] Optionally, combined Figure 1 As shown, the phase copper bar 2 includes a first part and a second part which are vertically connected, an end of the first part away from the second part is configured as a welding part 21, and an end of the second part away from the first part is configured as a connecting part 22. Among them, the first part of the phase copper bar 2 can be arranged parallel to the axial direction of the stator winding, and the second part of the phase copper bar 2 can be arranged parallel to the radial direction of the stator winding. In other words, the phase copper bar 2 is a bent plate structure. In this way, the space occupied by the phase copper bar 2 and even the busbar in the axial direction of the stator winding can be reduced, thereby reducing the envelope of the motor stator.

[0051] Optionally, the star point copper busbar 1 and / or the phase copper busbar 2 are punched out of a laminated copper busbar. The laminated copper busbar is formed by stacking a plurality of strip copper foils or copper sheets layer by layer, and then the two ends of the stacked plurality of strip copper foils or copper sheets are hot pressed together into one body, so that the two ends of the laminated copper busbar become hard connection parts, and the middle part of the laminated copper busbar becomes a soft connection part, so that the soft connection part in the middle can be bent and twisted arbitrarily. In this way, the star point copper busbar 1 and / or the phase copper busbar 2 are made by punching laminated copper busbars, which not only makes the star point copper busbar 1 and / or the phase copper busbar 2 have a lighter weight, which is convenient for realizing the lightweight design of the busbar, but also makes the star point copper busbar 1 and / or the phase copper busbar 2 have a certain softness, which is convenient for arbitrary bending and flattening during the installation process, and also makes the star point copper busbar 1 and / or the phase copper busbar 2 have a certain buffering capacity and strong vibration resistance.

[0052] An embodiment of the present invention provides a motor, comprising a multi-phase winding 600 and a bus as described above, wherein the welding portions 21 of the multiple phase copper bars 2 of the bus are respectively fitted and connected to the phase lead wires 610 of the multi-phase winding 600 , and the star-point copper bar 1 of the bus is fitted and connected to the star-point lead wire 620 of the multi-phase winding 600 .

[0053] In this embodiment, the number of phase copper bars 2 of the busbar corresponds to the number of phase windings 600 in the stator winding, and the number of star point copper bars 1 is usually set to one. Multiple phase lead wires 610 of a phase winding 600 are welded to the welding portion 21 of a corresponding phase copper bar 2 to achieve a fitting connection, thereby achieving current transmission; all star point lead wires 620 of multiple phase windings 600 are welded to a star point copper bar 1 to achieve a fitting connection, thereby achieving current transmission.

[0054] In addition, the beneficial effects of the motor of this embodiment are the same as those of the above-mentioned busbar, which will not be described in detail here.

[0055] Optionally, combined Figure 1 and Figure 2 As shown, each phase winding 600 includes multiple phase lead wires 610 and multiple star point lead wires 620. The multiple phase lead wires 610 of each phase winding 600 are arranged close together and welded to the welding part 21 of the corresponding phase copper bar 2. The multiple star point lead wires 620 of the multi-phase phase winding 600 are arranged close together and are all welded to the star point copper bar 1.

[0056] It should be noted that the close arrangement refers to being adjacent to each other in the circumferential direction of the stator winding and being in a converging shape.

[0057] Compared with welding multiple phase lead wires 610 to multiple pins on the phase copper bus 2 respectively, and welding multiple star point lead wires 620 to multiple pins on the star point copper bus 1 respectively, this optional embodiment adopts the method of welding multiple phase lead wires 610 of each phase winding 600 close together on the welding part 21 of the corresponding phase copper bus 2, and welding multiple star point lead wires 620 of the multi-phase winding 600 close together on the star point copper bus 1, so as to improve the mechanical strength of the welding position between the bus and the stator winding. At the same time, it can also reduce the circumferential size of the star point copper bus 1 of the stator winding, thereby reducing the production cost of the star point copper bus 1 and even the bus.

[0058] Furthermore, the plurality of star point lead wires 620 of the multi-phase winding 600 include star point lead wires 620 in a reverse twisted arrangement and star point lead wires 620 in a straight arrangement, wherein the reverse twisted arrangement refers to the star point lead wires 620 being bent in the circumferential direction of the stator winding; for example Figure 1 As shown, the three-phase phase winding 600 includes four reverse-twisted star point lead wires 620 and two straight-out star point lead wires 620. The two reverse-twisted star point lead wires 620 on the left and one straight-out star point lead wire 620 on the left are welded together at the left half of the star point copper bar 1, and the two reverse-twisted star point lead wires 620 on the right and one straight-out star point lead wire 620 on the right are welded together at the right half of the star point copper bar 1. In this way, the size of the star point copper bar 1 in the circumferential direction of the stator winding is further reduced.

[0059] A vehicle provided by an embodiment of the present invention includes the bus as described above, or includes the motor as described above.

[0060] The beneficial effects of the vehicle of this embodiment are the same as those of the above-mentioned busbar, and will not be repeated here.

[0061] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A busbar, characterized in that: The invention comprises a star point copper bar (1) and a plurality of phase copper bars (2) which are arranged in a split manner, wherein the phase copper bar (2) comprises a welding portion (21) in a plate-like structure and a connecting portion (22) for connecting to an electrical component, wherein the welding portion (21) of each phase copper bar (2) is used for fitting and connecting to a plurality of phase lead wires (610) of a corresponding phase winding (600), and the star point copper bar (1) is used for fitting and connecting to all star point lead wires (620) of the multi-phase phase winding (600).

2. The busbar according to claim 1, characterized in that: The star point copper bar (1) is in a plate-like structure and is arranged parallel to the axial direction of the stator winding.

3. The busbar according to claim 2, characterized in that: It also includes a first welding piece (3), through which the welding portion (21) and the plurality of phase lead wires (610) of the corresponding phase winding (600) are welded; And / or, the busbar further comprises a second welding piece (4), and the star-point copper busbar (1) and all the star-point lead-out wires (620) of the multi-phase phase winding (600) are welded via the second welding piece (4).

4. The busbar according to claim 1, characterized in that: It also includes an insulating coating, which is located at the fitting connection position between the welding portion (21) and the phase lead wire (610) and / or the fitting connection position between the star point copper busbar (1) and the star point lead wire (620).

5. The busbar according to claim 1, characterized in that: It also comprises an insulating sleeve (5), wherein the insulating sleeve (5) is sleeved at the connection position between the welding portion (21) and the phase lead wire (610), and the inner surface of the insulating sleeve (5) is tightly attached to the welding portion (21) and the phase lead wire (610).

6. The busbar according to claim 1, characterized in that: The phase copper busbar (2) comprises a first part and a second part which are vertically connected, wherein an end of the first part away from the second part is configured as the welding part (21), and an end of the second part away from the first part is configured as the connecting part (22).

7. The busbar according to claim 1, characterized in that: The star point copper bar (1) and / or the phase copper bar (2) are formed by stamping laminated copper bars.

8. A motor, characterized in that: It comprises a multi-phase phase winding (600) and a busbar as claimed in any one of claims 1 to 8, wherein the welding portions (21) of the multiple phase copper bars (2) of the busbar are respectively fitted and connected to the phase lead wires (610) of the multi-phase phase winding (600), and the star point copper bar (1) of the busbar is fitted and connected to the star point lead wires (620) of the multi-phase phase winding (600).

9. The motor according to claim 8, characterized in that Each phase winding (600) comprises a plurality of phase lead-out wires (610) and a plurality of star point lead-out wires (620); the plurality of phase lead-out wires (610) of each phase winding (600) are arranged close together and welded to the welding portion (21) of the corresponding phase copper bar (2); the plurality of star point lead-out wires (620) of the multi-phase phase winding (600) are arranged close together and welded to the star point copper bar (1).

10. A vehicle, characterized in that: It comprises the busbar as claimed in any one of claims 1 to 8, or it comprises the motor as claimed in claim 9.

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