Three-phase copper bar assembly, electric drive assembly and vehicle

Abstract

The utility model discloses a three-phase copper bar assembly, an electric drive assembly and a vehicle, the three-phase copper bar assembly comprises a fixed seat, an insert, a first copper bar, a second copper bar and a fastener, a matching surface is formed on the fixed seat, and a mounting hole is formed on the matching surface; at least part of the insert is arranged in the mounting hole; a first matching hole is formed in the first copper bar; a second matching hole is formed in the second copper bar; the fastener sequentially penetrates through the second matching hole and the first matching hole and is matched with the insert; wherein a flanging part extending outwards in the radial direction is formed on the peripheral surface of one end of the insert, at least part of the flanging part is arranged in the mounting hole, and the flanging part is in contact fit with the first copper bar. According to the three-phase copper bar assembly provided by the utility model, the flanging part is arranged on the insert, so that the contact area between the insert and the first copper bar is increased, the connection stability is effectively improved, the stress is dispersed, and the durability and the reliability of the three-phase copper bar assembly are improved.

Description

Technical Field

[0001] The utility model relates to the field of electricity, in particular to a three-phase copper busbar component, an electric drive assembly and a vehicle. Background Art

[0002] In the electric drive system of new energy vehicles, the three-phase copper busbar assembly is a key conductive and connecting structure, which undertakes important electrical connection and support functions. Its design needs to meet the requirements of high reliability and high economy to meet the operation needs of new energy vehicles in complex working environments.

[0003] However, motor controllers are often faced with harsh temperature and vibration environments due to the large number of internal electronic components and the displacement of the center of gravity caused by external forces. This leads to insufficient connection reliability of the connection structure and even has an adverse effect on the stability and performance of the electronic control system.

[0004] For example, CN202011310406.1 discloses a split three-phase fixed seat structure for a three-in-one electric drive system, in which the three-phase copper busbar is connected to the shell by injecting epoxy glue. Although this reduces the vibration intensity of the copper busbar during vibration, it adds a glue injection process, and the epoxy glue may volatilize at high temperatures, causing adverse effects on the internal electronic control. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a three-phase copper busbar assembly. According to the three-phase copper busbar assembly of the utility model, by providing a flange portion on the insert, the contact area between the insert and the first copper busbar is increased, the stability of the connection is effectively improved, and the stress is dispersed, thereby improving the durability and reliability of the three-phase copper busbar assembly.

[0006] The utility model also proposes an electric drive assembly having the three-phase copper busbar assembly.

[0007] The utility model also provides a vehicle having the electric drive assembly.

[0008] According to the utility model, the three-phase copper bar assembly includes: a fixing seat, a mating surface is formed on the fixing seat, and a mounting hole is formed on the mating surface; an insert, at least a portion of the insert is arranged in the mounting hole; a first copper bar, at least a portion of the first copper bar is arranged on the mating surface, and the first copper bar is formed with a first mating hole, and the first mating hole is matched with the mounting hole; a second copper bar, at least a portion of the second copper bar is arranged on the first copper bar, and the second copper bar is formed with a second mating hole, and the second mating hole is matched with the first mating hole; a fastener, the fastener passes through the second mating hole and the first mating hole in sequence and cooperates with the insert to fix the first copper bar and the second copper bar to the fixing seat; wherein, a flange portion extending outward in the radial direction is formed on the outer peripheral surface of one end of the insert, at least a portion of the flange portion is arranged in the mounting hole and the flange portion is in contact and matched with the first copper bar.

[0009] According to the three-phase copper bar assembly of the utility model, the fixing seat is used to support and fix other components, and the fixing seat is formed with a matching surface. By setting a mounting hole on the matching surface, the mounting hole can cooperate with a fastener to fix other components on the matching surface of the fixing seat. By setting an insert in the mounting hole, the insert is tightly combined with the mounting hole, which not only strengthens the structural strength of the mounting hole, but also the insert can be matched and connected with the fastener to achieve fixing other components on the matching surface of the fixing seat. Specifically, the three-phase copper bar assembly includes a first copper bar and a second copper bar, at least part of the first copper bar and at least part of the second copper bar are superimposed on the matching surface of the fixing seat, at this time, current can be transmitted between the first copper bar and the second copper bar, and the first matching hole of the first copper bar cooperates with the mounting hole, and the second matching hole of the second copper bar cooperates with the first matching hole, and the second matching hole, the first matching hole and the mounting hole jointly form a connecting channel, and the fastener passes through the second matching hole and the first matching hole in turn and cooperates with the insert, thereby realizing the assembly of the three-phase copper bar assembly. By providing a flanged portion on the insert, the flanged portion is in contact with the insert, thereby increasing the contact area between the insert and the first copper bar, improving the stability of the connection, and playing a role in dispersing stress, increasing the maximum torque that the structure can withstand, and further enhancing the durability of the three-phase copper bar assembly. In addition, by providing at least part of the flanged portion in the mounting hole, the insert and the mounting hole are more tightly combined, effectively preventing the insert from loosening and falling off, so that the three-phase copper bar assembly can better operate stably in harsh environments and achieve efficient and stable current transmission.

[0010] According to some embodiments of the present invention, the flange portion is disposed around the outer circumference of the insert.

[0011] According to some embodiments of the utility model, the insert further forms a limiting portion on the flange portion, the limiting portion is arranged around to define a connecting hole suitable for cooperating with the fastener, and the limiting portion is arranged in the first cooperating hole to limit the movement of the first copper busbar on the cooperating surface.

[0012] According to some embodiments of the present invention, the diameter of the connecting hole gradually decreases from the flange portion toward the free end of the limiting portion.

[0013] According to some embodiments of the utility model, an anti-pull-off groove is further formed on the outer circumferential surface of the insert, the groove wall of the anti-pull-off groove contacts and cooperates with the hole wall of the mounting hole, and the bottom wall of the anti-pull-off groove and the outer circumferential surface of the insert are chamfered or rounded.

[0014] According to some embodiments of the present invention, a chamfer transition is formed between the bottom wall of the anti-pull-off groove and the outer peripheral surface of the insert, and an angle α between the side wall and the bottom wall of the anti-pull-off groove satisfies: 90°<α≤150°.

[0015] According to some embodiments of the present invention, the angle α between the side wall and the bottom wall of the anti-pull-off groove is 135°.

[0016] According to some embodiments of the present invention, the anti-pull-off groove is configured to be a plurality of grooves spaced apart in the axial direction of the insert, and the angle α between the side wall and the bottom wall of each anti-pull-off groove is the same.

[0017] The electric drive assembly according to the utility model is briefly described below.

[0018] The electric drive assembly according to the utility model includes the three-phase copper busbar assembly described in any one of the above embodiments. Since the electric drive assembly according to the utility model includes the three-phase copper busbar assembly described in any one of the above embodiments, the electric drive assembly according to the utility model realizes stable and efficient transmission of current, optimizes performance, and improves stability by carrying the three-phase copper busbar assembly with high structural strength and strong stability.

[0019] The vehicle according to the present utility model is briefly described below.

[0020] The vehicle according to the utility model includes the electric drive assembly described in any one of the above embodiments. Since the vehicle according to the utility model includes the electric drive assembly described in any one of the above embodiments, the vehicle according to the utility model has high stability and performance of the electronic control system, which can ensure reliability and safety under various driving conditions, while improving the energy efficiency and cruising range of the whole vehicle.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0023] Figure 1 It is a structural schematic diagram of a three-phase copper busbar assembly according to an embodiment of the utility model;

[0024] Figure 2 is a cross-sectional schematic diagram of a three-phase copper busbar assembly according to an embodiment of the utility model;

[0025] Figure 3 This is a schematic structural diagram of a first copper bar of a three-phase copper bar assembly according to an embodiment of the utility model;

[0026] Figure 4 It is a schematic structural diagram of an insert according to an embodiment of the utility model.

[0027] Reference numerals:

[0028] Three-phase copper busbar assembly 1;

[0029] Fixed seat 11, matching surface 111;

[0030] Insert 12, flange portion 121, limit portion 122, anti-pull-off groove 123;

[0031] First copper busbar 13, first matching hole 131;

[0032] The second copper bar 14;

[0033] Fastener 15. DETAILED DESCRIPTION

[0034] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0035] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In the related art, motor controllers often face harsh temperature and vibration environments due to the large number of internal electronic components and the displacement of the center of gravity caused by external forces, which leads to insufficient connection reliability of the connection structure and even adversely affects the stability and performance of the electronic control system.

[0038] Reference below Figure 1-Figure 4 A three-phase copper busbar assembly 1 according to an embodiment of the present utility model is described.

[0039] like Figure 1-Figure 3As shown, the three-phase copper bar assembly 1 according to the utility model includes a fixing seat 11, an insert 12, a first copper bar 13, a second copper bar 14 and a fastener 15. The fixing seat 11 is formed with a mating surface 111, and the mating surface 111 is formed with a mounting hole; at least a portion of the insert 12 is arranged in the mounting hole; at least a portion of the first copper bar 13 is arranged on the mating surface 111, and the first copper bar 13 is formed with a first mating hole 131, and the first mating hole 131 is matched with the mounting hole; at least a portion of the second copper bar 14 is arranged A second matching hole is formed on the first copper bar 13, and the second copper bar 14 is matched with the first matching hole 131; the fastener 15 passes through the second matching hole and the first matching hole 131 in sequence and matches with the insert 12 to fix the first copper bar 13 and the second copper bar 14 to the fixing seat 11; wherein a flange portion 121 extending outward in the radial direction is formed on the outer peripheral surface of one end of the insert 12, at least a portion of the flange portion 121 is arranged in the mounting hole and the flange portion 121 contacts and matches with the first copper bar 13.

[0040] According to the three-phase copper busbar assembly 1 of the utility model, the fixing seat 11 is used to support and fix other components, and the fixing seat 11 is formed with a matching surface 111. By setting a mounting hole on the matching surface 111, the mounting hole can cooperate with the fastener 15 to fix other components on the matching surface 111 of the fixing seat 11. By setting an insert 12 in the mounting hole, the insert 12 is tightly combined with the mounting hole, which not only strengthens the structural strength of the mounting hole, but also the insert 12 can be matched and connected with the fastener 15 to achieve fixing other components on the matching surface 111 of the fixing seat 11. Specifically, the three-phase copper bar assembly 1 includes a first copper bar 13 and a second copper bar 14, at least part of the first copper bar 13 and at least part of the second copper bar 14 are superimposed on the mating surface 111 of the fixing seat 11, at this time, current can be transmitted between the first copper bar 13 and the second copper bar 14, and the first mating hole 131 of the first copper bar 13 is matched with the mounting hole, and the second mating hole of the second copper bar 14 is matched with the first mating hole 131, and the second mating hole, the first mating hole 131 and the mounting hole together form a connecting channel, and the fastener 15 passes through the second mating hole and the first mating hole 131 in sequence and cooperates with the insert 12, thereby realizing the assembly of the three-phase copper bar assembly 1. By setting a flange portion 121 on the insert 12, the flange portion 121 contacts and cooperates with the insert 12, thereby increasing the contact area between the insert 12 and the first copper bar 13, improving the stability of the connection, and playing a role in dispersing stress, improving the maximum torque that the insert 12 can withstand, and further enhancing the durability of the three-phase copper bar assembly 1. In addition, by setting at least a portion of the flange portion 121 in the mounting hole, the insert 12 is more tightly combined with the mounting hole, effectively preventing the insert 12 from loosening and falling off, so that the three-phase copper busbar assembly 1 can better operate stably in harsh environments and achieve efficient and stable current transmission.

[0041] Therefore, according to the three-phase copper busbar assembly 1 of the present invention, by providing a flange portion 121 on the insert 12, the contact area between the insert 12 and the first copper busbar 13 is increased, the stability of the connection is effectively improved, and the stress is dispersed, thereby improving the durability and reliability of the three-phase copper busbar assembly 1.

[0042] According to some embodiments of the present invention, Figure 2 and Figure 4 As shown, the flange portion 121 is arranged around the outer peripheral surface of the insert 12. The flange portion 121 extends along the outer peripheral surface of the insert 12 and surrounds it for a circle, forming a continuous annular structure, further increasing the contact area between the insert 12 and the first copper bar 13, improving the stability and reliability of the connection, and making the positioning of the insert 12 in the mounting hole more accurate and firm. At the same time, the flange portion 121 can more effectively disperse stress and reduce the risk of damage caused by stress concentration. In addition, the setting of the flange portion 121 also enhances the friction between the insert 12 and the mounting hole, further preventing the insert 12 from loosening and falling off. Therefore, by arranging the flange portion 121 around the outer peripheral surface of the insert 12, a more stable and reliable connection structure is provided for the three-phase copper bar assembly 1, efficient transmission of current is achieved, and the durability of the three-phase copper bar assembly 1 is enhanced.

[0043] According to some embodiments of the present invention, Figure 2 and Figure 4 As shown, the insert 12 is further formed with a limiting portion 122 on the flange portion 121, the limiting portion 122 is arranged around to define a connection hole suitable for cooperating with the fastener 15, and the limiting portion 122 is arranged in the first matching hole 131 to limit the movement of the first copper bar 13 on the matching surface 111. By arranging the limiting portion 122 on the insert 12, the limiting portion 122 is located on the flange portion 121, and the limiting portion 122 can cooperate with the first matching hole 131 to limit the movement of the first copper bar 13 on the matching surface 111, which can reduce the risk of the first copper bar 13 moving or loosening when subjected to external force or vibration. Specifically, the limiting portion 122 extends in a circle around a certain center point, and the limiting portion 122 itself can be arranged in the first matching hole 131 to generate an interaction force with the first copper bar 13, thereby limiting the movement of the first copper bar 13, and a connecting hole is formed in the limiting portion 122, and the fastener 15 passes through the connecting hole while matching with the insert 12, further realizing a stable connection between the insert 12, the first copper bar 13 and the fastener 15. In addition, during the assembly process of the three-phase copper bar assembly 1, the limiting portion 122 is arranged in the first matching hole 131 to position the first copper bar 13 on the matching surface 111, simplifying the assembly process and improving the assembly efficiency.

[0044] According to some embodiments of the present invention, Figure 4As shown, the aperture of the connection hole gradually decreases from the flange portion 121 to the free end of the limit portion 122. The aperture of the connection hole gradually decreases from the flange portion 121 to the free end of the limit portion 122 (i.e., the end away from the flange portion 121). As the aperture gradually decreases, the restraining effect of the limit portion 122 on the fastener 15 gradually increases, which helps to enhance the stability and strength of the connection. When the fastener 15 is fully inserted, the fastener 15 will be restrained by the hole wall at the free end position of the limit portion 122, which helps to prevent the fastener 15 from loosening when subjected to external force or vibration.

[0045] According to some embodiments of the utility model, a first thread is formed in the insert 12, and a second thread that matches the first thread is formed on the fastener 15. The fastener 15 matches the first thread on the insert 12 through the second thread to achieve a stable connection between the insert 12 and the first copper bar 13. The threaded fit is not only easy to install, but also has high connection strength, and can effectively resist the influence of external force or vibration on the connection part. At the same time, the threaded fit also has good self-locking performance, which can further reduce the risk of loosening or falling off of the connection part.

[0046] According to some embodiments of the present invention, Figure 2 and Figure 4 As shown, an anti-pull-off groove 123 is also formed on the outer peripheral surface of the insert 12, and the groove wall of the anti-pull-off groove 123 contacts and cooperates with the hole wall of the mounting hole, and the bottom wall of the anti-pull-off groove 123 and the outer peripheral surface of the insert 12 are chamfered or rounded. By providing the anti-pull-off groove 123 on the outer peripheral surface of the insert 12, the groove wall of the anti-pull-off groove 123 and the hole wall of the mounting hole are in close contact and cooperation, so that the position of the insert 12 in the mounting hole is stable. The chamfered or rounded transition is adopted between the bottom wall of the anti-pull-off groove 123 and the outer peripheral surface of the insert 12, which can reduce the stress concentration phenomenon that may occur when the insert 12 is installed or subjected to force, thereby improving the service life and stability of the insert 12, and can make the anti-pull-off groove 123 and the mounting hole cooperate more closely, further improving the stability and reliability.

[0047] According to some embodiments of the present invention, Figure 4As shown, there is a chamfer transition between the bottom wall of the anti-pull-off groove 123 and the outer peripheral surface of the insert 12, and the angle between the side wall and the bottom wall of the anti-pull-off groove 123 is α and satisfies: 90°<α≤150°. A chamfer transition is adopted between the bottom wall of the anti-pull-off groove 123 and the outer peripheral surface of the insert 12. The chamfer transition not only makes the appearance of the insert 12 smoother and reduces stress concentration, but also enhances the stability of the insert 12 when subjected to force. An angle α is formed between the side wall and the bottom wall of the anti-pull-off groove 123. The size of the angle α has an important influence on the performance and effect of the anti-pull-off groove 123. The value range of the angle α is 90°<α≤150°, so that when the insert 12 is subjected to external force, the force distribution is more uniform, the stress concentration phenomenon is reduced, and the service life of the insert 12 is increased.

[0048] According to some embodiments of the present invention, the angle α between the side wall and the bottom wall of the anti-pull-off groove 123 is 135°. By configuring the angle α between the side wall and the bottom wall of the anti-pull-off groove 123 to be 135°, the anti-pull-off groove 123 is in close contact with the hole wall of the mounting hole, which helps to prevent the insert 12 from falling off or moving when it is installed or subjected to force, thereby improving the stability of the insert 12, and making the force distribution of the insert 12 more uniform when subjected to external force, which helps to reduce stress concentration and improve the durability and service life of the insert 12.

[0049] According to some embodiments of the present invention, Figure 4 As shown, the anti-pull-off groove 123 is constructed to be a plurality of spaced-apart grooves 123 arranged in the axial direction of the insert 12, and the angle α between the side wall and the bottom wall of each anti-pull-off groove 123 is the same. By constructing the anti-pull-off groove 123 to be a plurality of grooves, the fixing effect of the insert 12 at multiple positions can be enhanced, and the stability and reliability of the insert 12 can be further improved. The plurality of anti-pull-off grooves 123 are spaced apart in the axial direction of the insert 12, so that the insert 12 can be fully fixed at different positions, thereby improving the fixing effect of the insert 12. Although there are a plurality of anti-pull-off grooves 123, the angle α between the side wall and the bottom wall of each anti-pull-off groove 123 is the same, so that all the anti-pull-off grooves 123 are structurally consistent, which helps to simplify the manufacturing process and ensures that each anti-pull-off groove 123 can play the same anti-pull-off effect, so that the force on the insert 12 is more uniform and stable.

[0050] The electric drive assembly according to the utility model is briefly described below.

[0051] The electric drive assembly according to the utility model includes the three-phase copper busbar assembly 1 in any one of the above embodiments. Since the electric drive assembly according to the utility model includes the three-phase copper busbar assembly 1 in any one of the above embodiments, the electric drive assembly according to the utility model realizes stable and efficient transmission of current, optimizes performance, and improves stability by carrying the three-phase copper busbar assembly 1 with high structural strength and strong stability.

[0052] The vehicle according to the present utility model is briefly described below.

[0053] The vehicle according to the utility model includes the electric drive assembly in any one of the above embodiments. Since the vehicle according to the utility model includes the electric drive assembly in any one of the above embodiments, the vehicle according to the utility model has high stability and performance of the electric control system, which can ensure reliability and safety under various driving conditions, while improving the energy efficiency and cruising range of the whole vehicle.

[0054] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0055] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A three-phase copper busbar assembly, characterized in that: include: A fixing seat (11), wherein a matching surface (111) is formed on the fixing seat (11), and a mounting hole is formed on the matching surface (111); An insert (12), at least a portion of the insert (12) being disposed in the mounting hole; A first copper bar (13), at least a portion of which is disposed on the mating surface (111), and the first copper bar (13) is formed with a first mating hole (131), the first mating hole (131) being mated with the mounting hole; a second copper bar (14), wherein at least a portion of the second copper bar (14) is disposed on the first copper bar (13), and the second copper bar (14) is formed with a second matching hole, and the second matching hole matches with the first matching hole (131); a fastener (15), the fastener (15) sequentially passing through the second matching hole and the first matching hole (131) and matching with the insert (12) to fix the first copper bar (13) and the second copper bar (14) to the fixing seat (11); A flange portion (121) extending radially outward is formed on the outer peripheral surface of one end of the insert (12), at least a portion of the flange portion (121) is disposed in the mounting hole, and the flange portion (121) is in contact with and fits the first copper busbar (13).

2. The three-phase copper busbar assembly according to claim 1, characterized in that: The flange portion (121) is arranged around the outer peripheral surface of the insert (12).

3. The three-phase copper busbar assembly according to claim 2, characterized in that: The insert (12) is further formed with a limiting portion (122) on the flange portion (121), the limiting portion (122) being arranged around to define a connection hole suitable for cooperating with the fastener (15), and the limiting portion (122) being arranged in the first matching hole (131) to limit the movement of the first copper bar (13) on the matching surface (111).

4. The three-phase copper busbar assembly according to claim 3, characterized in that: The diameter of the connection hole gradually decreases from the flange portion (121) toward the free end of the limiting portion (122).

5. The three-phase copper busbar assembly according to claim 1, characterized in that: An anti-pull-off groove (123) is also formed on the outer peripheral surface of the insert (12), the groove wall of the anti-pull-off groove (123) contacts and cooperates with the hole wall of the mounting hole, and a chamfer or rounded transition is formed between the bottom wall of the anti-pull-off groove (123) and the outer peripheral surface of the insert (12).

6. The three-phase copper busbar assembly according to claim 5, characterized in that: A chamfered transition is formed between the bottom wall of the anti-pull-off groove (123) and the outer peripheral surface of the insert (12), and an angle α is formed between the side wall and the bottom wall of the anti-pull-off groove (123) and satisfies the following conditions: 90°<α≤150°.

7. The three-phase copper busbar assembly according to claim 6, characterized in that: The included angle α between the side wall and the bottom wall of the anti-pull-off groove (123) is 135°.

8. The three-phase copper busbar assembly according to claim 6, characterized in that: The anti-pull-off groove (123) is constructed to be a plurality of grooves spaced apart in the axial direction of the insert (12), and the included angle α between the side wall and the bottom wall of each anti-pull-off groove (123) is the same.

9. An electric drive assembly, characterized in that: A three-phase copper busbar assembly comprising any one of claims 1-8.

10. A vehicle, characterized in that: Including the electric drive assembly as described in claim 9.

Images