Copper bar assembly, electric driving system and vehicle

Abstract

The utility model provides a copper bar assembly, an electric drive system and a vehicle, and relates to the technical field of vehicles, the copper bar assembly comprises a copper bar assembly, a first plastic coating part and a second plastic coating part, the copper bar assembly is provided with a first end used for being electrically connected with a motor and a second end used for being electrically connected with a controller, and the first plastic coating part and the second plastic coating part are sequentially arranged along the direction from the first end to the second end of the copper bar assembly and respectively coat the copper bar assembly. According to the utility model, the demoulding difficulty of the plastic coating structure on the copper bar assembly can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and more specifically, to a copper busbar assembly, an electric drive system, and a vehicle. Background Technology

[0002] The copper busbar assembly is a crucial component of an electric drive system, primarily serving to establish a high-voltage connection between the motor and the controller. With the continuous development of new energy technologies, the requirements for the insulation performance of the copper busbar assembly are becoming increasingly stringent.

[0003] Current copper busbar assemblies typically have a plastic coating layer on the copper busbar to improve its insulation. However, the plastic coating usually needs to cover the entire copper busbar. Since the copper busbar itself has a certain length, this results in a relatively long overall structure of the plastic coating layer, making it difficult to demold during injection molding. Utility Model Content

[0004] The problem this invention addresses is: how to reduce the difficulty of demolding the plastic-coated structure on the copper busbar assembly.

[0005] To address the aforementioned problems, this utility model provides a copper busbar assembly, an electric drive system, and a vehicle.

[0006] In a first aspect, the present invention provides a copper busbar assembly, including a copper busbar component, a first plastic-coated portion and a second plastic-coated portion. The copper busbar component has a first end for electrical connection with a motor and a second end for electrical connection with a controller. The first plastic-coated portion and the second plastic-coated portion are arranged sequentially along the direction from the first end to the second end of the copper busbar component and respectively cover the outside of the copper busbar component.

[0007] Optionally, the first plastic-coated portion is connected to the second plastic-coated portion, one of the first plastic-coated portion and the second plastic-coated portion is provided with a groove, and the other is provided with a protrusion that engages with the groove.

[0008] Optionally, the insertion position of the groove and the protrusion is located between any two copper busbars of the copper busbar assembly.

[0009] Optionally, the second plastic-coated portion is provided with a magnetic ring groove for mounting the magnetic ring.

[0010] Optionally, the outer peripheral wall of the first plastic-coated part is provided with a mounting groove surrounding the first plastic-coated part;

[0011] The copper busbar assembly also includes a sealing ring disposed in the mounting groove.

[0012] Optionally, a dispensing groove is provided on the first plastic-coated part, and the dispensing groove extends through the inner and outer sides of the wall of the first plastic-coated part.

[0013] Optionally, the copper busbar of the copper busbar assembly is provided with a first threaded sleeve at the first end of the copper busbar assembly; and / or,

[0014] The copper busbar of the copper busbar assembly has a second threaded sleeve at the second end of the copper busbar assembly.

[0015] Optionally, the copper busbar of the copper busbar assembly includes a main body segment, a first bending segment, a second bending segment, and a connecting segment connected sequentially along a first end to a second end of the copper busbar assembly. The first bending segment bends toward one side of the main body segment, and the second bending segment bends toward one side of the first bending segment and is located on the same side of the main body segment as the first bending segment.

[0016] Secondly, this utility model provides an electric drive system, including a motor, a controller, and a copper busbar assembly as described above. The first end of the copper busbar component of the copper busbar assembly is electrically connected to the motor, and the second end of the copper busbar component of the copper busbar assembly is electrically connected to the controller.

[0017] Thirdly, this utility model provides a vehicle including the electric drive system described above.

[0018] The beneficial effects of the copper busbar assembly of this utility model are as follows: By providing a first plastic-coated portion and a second plastic-coated portion sequentially arranged along the direction from the first end to the second end on the copper busbar assembly, the external plastic coating of the copper busbar assembly is formed, that is, the external plastic coating of the copper busbar assembly is divided into two independent parts. Therefore, the injection molding of the first plastic-coated portion and the second plastic-coated portion needs to be performed separately, resulting in a smaller contact area between the plastic and the mold in each injection molding process, reducing the resistance during demolding, and reducing the difficulty of demolding. Furthermore, compared to dividing the external plastic coating into three or more parts, dividing the external plastic coating into two parts can reduce the number of injection molding processes. Moreover, the shape and structure of the two plastic-coated portions can be adapted to the motor and controller connected to both ends of the copper busbar assembly, so as to facilitate the assembly and connection of the copper busbar assembly with the motor and controller. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the copper busbar assembly according to an embodiment of the present invention;

[0020] Figure 2 This is a cross-sectional view of the copper busbar assembly according to an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the copper busbar assembly according to an embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of the injection molding method for the copper busbar assembly according to an embodiment of the present utility model;

[0023] Figure 5This is a schematic diagram of the structure of the first plastic-coated part in an embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram of the copper busbar assembly after removing the first plastic coating part according to an embodiment of the present invention;

[0025] Figure 7 This is a schematic diagram of the magnetic ring structure according to an embodiment of the present invention;

[0026] Figure 8 This is a schematic diagram of the installation of the copper busbar assembly in the motor according to an embodiment of the present invention;

[0027] Figure 9 This is a schematic diagram showing the installation of the controller and copper busbar assembly onto the motor according to an embodiment of the present invention;

[0028] Figure 10 This is a schematic diagram of the copper busbar structure according to an embodiment of the present invention.

[0029] Explanation of reference numerals in the attached figures:

[0030] 10. Copper busbar assembly; 11. Copper busbar component; 111. First end; 112. Second end; 113. Copper busbar; 1131. Main body section; 1132. First bending section; 1133. Second bending section; 1134. Connecting section; 114. Threaded hole; 115. Connecting sleeve; 116. Connecting hole; 12. First plastic-coated part; 121. Groove; 122. Mounting groove; 123. Adhesive groove; 13. Second plastic-coated part; 131. Protrusion; 132. Magnetic ring groove; 133. Insert protection structure; 1331. Circular hole; 1332. Weight reduction hole; 14. Magnetic ring; 15. Sealing ring; 16. Bolt; 20. Motor; 21. Housing; 211. Insertion hole; 22. Flexible busbar; 30. Controller. Detailed Implementation

[0031] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Although some embodiments of this utility model are shown in the drawings, it should be understood that this utility model can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this utility model. It should be understood that the drawings and embodiments of this utility model are for illustrative purposes only and are not intended to limit the scope of protection of this utility model.

[0032] In the attached diagram, the Z-axis represents the vertical direction, i.e., up and down, with the positive direction of the Z-axis representing up and the negative direction representing down. The X-axis represents the horizontal direction and is designated as the front and back position, with the positive direction of the X-axis representing the front and the negative direction representing the back. The Y-axis represents the left and right position, with the positive direction of the Y-axis representing the left and the negative direction representing the right. It should be noted that the aforementioned representations of the Z, Y, and X axes are merely for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to"; the term "based on" means "at least partially based on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; and the term "optionally" means "optional embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first," "second," etc., mentioned in this utility model are only used to distinguish different devices, modules, or units, and are not used to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0034] It should be noted that the terms "one" and "multiple" used in this utility model are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0035] In related technologies, the plastic coating on copper busbars usually needs to cover the entire copper busbar, with only the two ends partially exposed to facilitate electrical connection with the motor and controller respectively. However, the copper busbar itself has a certain length, which means that the plastic structure formed by the plastic coating also has a corresponding length. The longer plastic structure results in a larger contact area between it and the mold, causing increased friction between the two. This leads to greater resistance during demolding, increasing the difficulty of demolding.

[0036] To address the problems existing in the aforementioned related technologies, this utility model provides a copper busbar assembly, an electric drive system, and a vehicle to reduce the demolding difficulty of the plastic-coated structure on the copper busbar assembly. Detailed descriptions are provided below with reference to specific embodiments.

[0037] like Figure 1 and Figure 2As shown in the figure, a copper busbar assembly 10 provided in this embodiment of the present invention includes a copper busbar assembly 11, a first plastic-coated portion 12 and a second plastic-coated portion 13. The copper busbar assembly 11 has a first end 111 for electrical connection with a motor 20 and a second end 112 for electrical connection with a controller 30. The first plastic-coated portion 12 and the second plastic-coated portion 13 are arranged sequentially along the direction from the first end 111 to the second end 112 of the copper busbar assembly 11 and respectively cover the outside of the copper busbar assembly 11.

[0038] It should be noted that, as Figure 3 As shown, the copper busbar assembly 11 may include three copper busbars 113, which are arranged sequentially at intervals and are respectively used to connect to the three-phase busbars of the motor. The lengths of the three copper busbars 113 may be the same or different, for example, in... Figure 3 In the middle, the lengths of the three copper bars 113 gradually change.

[0039] The direction from the first end 111 to the second end 112 is the extension direction of the copper busbar assembly 11 itself, or the extension direction of the three copper busbars 113. The copper busbars 113 of the copper busbar assembly 11 can be bent or not bent. When the copper busbar 113 is not bent, the direction from the first end 111 to the second end 112 is the length direction of the copper busbar 113. When the copper busbar 113 is bent in length, the direction from the first end 111 to the second end 112 is the bending extension direction of the copper busbar 113.

[0040] Specifically, the first plastic-coated part 12 and the second plastic-coated part 13 are arranged sequentially along the direction from the first end 111 to the second end 112, and both of them cover the three copper busbars 113. In addition, the first plastic-coated part 12 and the second plastic-coated part 13 can be partially combined so that the first plastic-coated part 12 and the second plastic-coated part 13 are connected to jointly wrap the copper busbar assembly 11.

[0041] Furthermore, both the first plastic-coated portion 12 and the second plastic-coated portion 13 can be formed onto the copper busbar assembly 11 using injection molding. Injection molding is a conventional method in this field and is not limited here. The first plastic-coated portion 12 and the second plastic-coated portion 13 are injection molded separately, and the injection sequence of the first plastic-coated portion 12 and the second plastic-coated portion 13 is not limited. For example, in... Figure 4 In this embodiment, along the direction indicated by the arrow, the first plastic coating portion 12 and the second plastic coating portion 13 are sequentially injection molded onto the copper busbar assembly 11. In this way, since the first plastic coating portion 12 is completed when the second plastic coating portion 13 is injection molded, the first plastic coating portion 12 can fix the multiple copper busbars 113 to each other and prevent relative shaking. Therefore, when the second plastic coating portion 13 is injection molded, it is not necessary to fix the copper busbar by opening fixing holes on the copper busbar. This avoids the fixing holes weakening the current cross-section of the copper busbar 113 and reducing the current load of the copper busbar 113, which would cause the copper busbar 113 to overheat.

[0042] In this embodiment, by providing a first plastic-coated portion 12 and a second plastic-coated portion 13 sequentially arranged along the direction from the first end 111 to the second end 112 on the copper busbar assembly 11, an external plastic coating is formed on the copper busbar assembly 11. This divides the external plastic coating of the copper busbar assembly 11 into two independent parts. Therefore, the first plastic-coated portion 12 and the second plastic-coated portion 13 need to be injection molded separately, resulting in a smaller contact area between the plastic and the mold during each injection molding process, reducing the resistance during demolding and simplifying demolding. Furthermore, compared to dividing the external plastic coating into three or more parts, dividing it into two parts reduces the number of injection molding processes. Moreover, the shapes and structures of these two plastic-coated portions can be adapted to the motor 20 and controller 30 connected to both ends of the copper busbar assembly 11, respectively, facilitating the assembly and connection of the copper busbar assembly 11 with the motor 20 and controller 30.

[0043] Optionally, such as Figure 2 and Figure 5 As shown, the first plastic-coated part 12 is connected to the second plastic-coated part 13. One of the first plastic-coated part 12 and the second plastic-coated part 13 is provided with a groove 121, and the other is provided with a protrusion 131 that is inserted into the groove 121.

[0044] It should be noted that the groove 121 and the protrusion 131 can be respectively provided on the first plastic coating part 12 and the second plastic coating part 13. For example, the groove 121 is provided on the first plastic coating part 12 and the protrusion 131 is provided on the second plastic coating part 13. Or, for another example, the protrusion 131 is provided on the first plastic coating part 12 and the groove 121 is provided on the second plastic coating part 13.

[0045] The cross-section of the groove 121 perpendicular to the length of the copper busbar 113 can be rectangular. Correspondingly, the cross-section of the protrusion 131 is also rectangular. Compared with the arc-shaped groove protrusion, the rectangular groove protrusion has a better insertion effect.

[0046] In this optional embodiment, the groove 121 and the protrusion 131 are interlocked, which can improve the bonding strength between the first plastic-coated part 12 and the second plastic-coated part 13, making the connection between the first plastic-coated part 12 and the second plastic-coated part 13 tighter, thereby improving the plastic coating effect on the copper busbar assembly 11 and further improving the insulation performance of the copper busbar assembly 10.

[0047] Optionally, such as Figure 5 and Figure 6 As shown, the insertion position of the groove 121 and the protrusion 131 is located between any two copper busbars 113 of the copper busbar assembly 11.

[0048] The insertion position of the groove 121 and the protrusion 131 is between the two copper busbars 113. For example, when the first plastic-coated part 12 is provided with a groove 121 and the second plastic-coated part 13 is provided with a protrusion 131, the groove 121 can be located on the outer peripheral wall of the first plastic-coated part 12 between the two copper busbars 113, and the protrusion 131 is correspondingly provided with the groove 121.

[0049] Regarding the specific number of grooves 121, at least two grooves 121 can be provided, with at least one groove 121 provided between any two adjacent copper busbars 113 of the copper busbar assembly 11 to ensure the creepage distance between any two copper busbars 113. Correspondingly, at least two protrusions 131 can also be provided. In a specific embodiment, such as... Figure 5 and 6 As shown, two pairs of grooves 121 and protrusions 131 are provided between any two adjacent copper busbars 113 of the copper busbar assembly 11.

[0050] In this optional embodiment, by setting the insertion position of the groove 121 and the protrusion 131 between the two copper busbars 113, that is, by placing the groove 121 and the protrusion 131 between the two copper busbars 113, the creepage distance between the two copper busbars 113 can be increased, and the risk of conduction between the two copper busbars 113 can be reduced.

[0051] Optionally, such as Figure 6 As shown, the second plastic-coated part 13 is provided with a magnetic ring groove 132 for mounting the magnetic ring 14.

[0052] It should be noted that, as Figure 7 As shown, the copper busbar assembly 10 may also include a magnetic ring 14. The magnetic ring 14 on the copper busbar 113 is also called a common mode choke. It can suppress electromagnetic interference when it is fitted on the copper busbar 113.

[0053] In addition, the magnetic ring groove 132 can be an annular groove surrounding the copper busbar assembly 11 to facilitate the reception and installation of the magnetic ring 14. Furthermore, the opening of the magnetic ring groove 132 can be oriented towards the first end 111 of the copper busbar assembly 11 to facilitate the magnetic ring 14 to be fitted from the first end 111 of the copper busbar assembly 11 and assembled into the magnetic ring groove 132. Moreover, a snap fastener can be provided in the magnetic ring groove 132 to snap and fix the magnetic ring 14 in the magnetic ring groove 132 after it is installed.

[0054] In this optional embodiment, by providing a magnetic ring groove 132 on the second plastic-coated part 13, a redundant design is achieved. When the electric drive system generates electromagnetic noise during operation, a magnetic ring 14 can be installed in the magnetic ring groove 132 as needed to suppress electromagnetic interference and improve electromagnetic noise. Furthermore, since this copper busbar assembly 10 satisfies the function of quick addition of magnetic ring 14, there is no need to redevelop this copper busbar assembly 10 to eliminate electromagnetic noise, thus saving redevelopment costs.

[0055] Optionally, such as Figure 6 As shown, the copper busbar 113 of the copper busbar assembly 11 is provided with a second threaded sleeve at the second end 112 of the copper busbar assembly 11 (the second threaded sleeve is located at the attached...). Figure 6 (Below the circular hole 1331 shown), the second plastic-coated portion 13 includes an insert protection structure 133 covering the second threaded sleeve.

[0056] Specifically, such as Figure 3 As shown, each copper busbar 113 of the copper busbar assembly 11 may be provided with a connection hole 116 at the second end 112. The second threaded sleeve is embedded in the connection hole 116. The second threaded sleeve has a threaded hole, or in other words, the inner wall of the second threaded sleeve is provided with threads. The second threaded sleeve is used to be connected to the controller 30 by bolts.

[0057] Specifically, such as Figure 6 As shown, the insert protection structure 133 has a circular hole 1331. The part of the insert protection structure 133 below the circular hole 1331 is wrapped around the second threaded sleeve. The insert protection structure 133 can simultaneously cover the three second threaded sleeves of the three copper busbars 113, which not only protects the threaded sleeves but also improves the installation stability of each threaded sleeve.

[0058] Specifically, such as Figure 6 As shown, the insert protection structure 133 has a weight reduction hole 1332 between adjacent second threaded sleeves to reduce the weight of the insert protection structure 133.

[0059] In this optional embodiment, by providing a second threaded sleeve at the second end 112 of the copper busbar 113, the second end can be electrically connected to the controller, and by covering the second threaded sleeve with an insert protection structure 133, the second threaded sleeve can be better protected.

[0060] Optionally, such as Figure 2 and Figure 5 As shown, the outer peripheral wall of the first plastic-coated part 12 is provided with an installation groove 122 surrounding the first plastic-coated part 12; the copper busbar assembly 10 also includes a sealing ring 15 disposed in the installation groove 122.

[0061] It should be noted that, as Figure 8 As shown, the motor 20 may include a housing 21, on which a plug hole 211 may be provided; the first end 111 of the copper busbar assembly 11 is used to insert into the plug hole 211 of the housing 21, and the outer peripheral wall of the sealing ring 15 is used to contact the hole wall of the plug hole 211 to achieve a seal.

[0062] In this optional embodiment, by providing an installation groove 122 on the outer peripheral wall of the first plastic-coated part 12, and providing a sealing ring 15 on the installation groove 122, the sealing ring 15 can contact the hole wall of the insertion hole 211 of the motor 20 to ensure the sealing between the first plastic-coated part 12 and the housing 21 of the motor 20, effectively preventing the lubricating oil in the motor 20 from entering the controller 30, thereby ensuring that the airtightness and sealing requirements of the electric drive system are met.

[0063] Optionally, such as Figure 2 and Figure 5 As shown, a dispensing groove 123 is provided on the first plastic-coated part 12, and the dispensing groove 123 penetrates the inner and outer sides of the wall of the first plastic-coated part 12.

[0064] It should be noted that, since the first plastic coating part 12 needs to cover the copper busbar assembly 11, the first plastic coating part 12 is a shell-shaped structure as a whole. The glue dispensing groove 123 penetrates the inner and outer sides of the wall of the first plastic coating part 12, which means that one end of the glue dispensing groove 123 is connected to the outside of the shell-shaped structure of the first plastic coating part 12, and the other end of the glue dispensing groove 123 is connected to the inside of the shell-shaped structure of the first plastic coating part 12, so that when the glue is injected through the glue dispensing groove 123, the glue can reach the surface of the copper busbar 113 along the glue dispensing groove 123.

[0065] Because the first plastic-coated part 12 is wrapped around the copper busbar assembly 11 by injection molding, the injection molding process may result in the first plastic-coated part 12 and the copper busbar 113 not being completely bonded. When the electric drive system is working, the lubricating oil in the motor 20 may enter the controller 30 through the gap between the first plastic-coated part 12 and the copper busbar 113, affecting the airtightness and sealing of the electric drive system. In this optional embodiment, because the first plastic-coated part 12 is provided with a dispensing groove 123 that runs through its inner and outer sides, after the first plastic-coated part 12 is injection molded, glue can be dispensed in the dispensing groove 123, allowing the glue to flow between the first plastic-coated part 12 and the copper busbar 113, ensuring that the first plastic-coated part 12 and the copper busbar 113 are tightly bonded, improving the sealing between the two, effectively preventing the lubricating oil in the motor 20 from entering the controller 30, thereby ensuring that the airtightness and sealing requirements of the electric drive system are met.

[0066] In addition, the dispensing groove 123 can be set on the side of the mounting groove 122 near the first end 111, that is, the dispensing groove 123 is set on the part of the first plastic-coated part 12 that is inserted into the insertion hole 211 of the housing 21. In this way, on the one hand, the first plastic-coated part 12 and the copper bus assembly 11 can be well fitted near the first end 111, effectively preventing the lubricating oil in the motor 20 from entering the gap between the first plastic-coated part 12 and the copper bus assembly 11 from the first end 111. On the other hand, the dispensing groove 123 extends into the housing 21 of the motor 20, which can avoid affecting the insulation effect of the first plastic-coated part 12 outside the housing 21 of the motor 20.

[0067] Optionally, such as Figure 2 and Figure 8 As shown, the copper busbar 113 of the copper busbar assembly 11 is provided with a first threaded sleeve 115 at the first end 111 of the copper busbar assembly 11.

[0068] The copper busbar 113 may have an insert hole at the first end 111, and the first threaded sleeve 115 is inserted into the insert hole. The first threaded sleeve 115 has a threaded hole 114.

[0069] It should be noted that the copper busbar assembly 10 may also include a bolt 16, which is screwed onto the first threaded sleeve 115 and is used to connect the first threaded sleeve 115 to the copper busbar of the motor 20.

[0070] Understandably, the installation process for the copper busbar assembly 10 is typically as follows: Figure 8 and Figure 9 As shown, the motor is placed horizontally with its axis parallel to the Y-axis. First, the copper busbar assembly 10 is installed onto the controller 30. Then, the copper busbar assembly 10 and the controller 30 are installed as a whole onto the motor 20. During this installation process, the assembly can be positioned above the motor 20, and the first end 111 of the copper busbar assembly 10 is inserted into the motor 20 from top to bottom through the insertion hole 211 of the housing 21 (the insertion process is described in detail below). Figure 9 During insertion, the copper busbar 113 must be aligned with the axial direction of the motor 20 (i.e., ...). Figure 9 (As shown in the Y-axis direction) perpendicular, after insertion, the first end 111 and the flexible busbar 22 inside the motor 20 are simultaneously connected to the bolts fixed inside the motor 20, realizing the electrical connection between the first end 111 and the flexible busbar 22. However, because the bolts are fixed and the movement position of the first end 111 is limited, there may be a certain installation error in the Y-axis direction of the first end 111 during the actual installation process, making it difficult for the first end 111 to accurately align with the bolts, affecting the normal installation of the copper busbar assembly 10.

[0071] In this optional embodiment, by providing a first threaded sleeve 115 at the first end 111 of the copper busbar 113, after the first end 111 is inserted into the motor 20, the first end 111 can be fastened to the flexible busbar 22 by means of an independent bolt 16, which passes through the through hole of the flexible busbar 22 and the first threaded sleeve 115 of the first end 111 in sequence, so as to realize the electrical connection between the two, thereby facilitating the accurate installation of the copper busbar assembly 10.

[0072] Optionally, such as Figure 10As shown, the copper busbar 113 of the copper busbar assembly 11 includes a main body section 1131, a first bending section 1132, a second bending section 1133, and a connecting section 1134 connected sequentially along the direction from the first end 111 to the second end 112 of the copper busbar assembly 11. The first bending section 1132 bends toward one side of the main body section 1131, and the second bending section 1133 bends toward one side of the first bending section 1132 and is located on the same side of the main body section 1131 as the first bending section 1132.

[0073] The main body segment 1131 is used to be inserted into the housing 20. The length of the main body segment 1131 can be greater than the first bending segment 1132 and the second bending segment 1133, so that the main body segment 1131 can penetrate deeper into the housing 20 after being inserted into the housing 20, so as to connect with the flexible busbar 22 inside the housing 20.

[0074] An insertion hole may be provided at the end of the main body segment 1131 away from the first bending segment 1132, and a connection hole 116 may be provided on the connecting segment 1134.

[0075] In this optional embodiment, the first bending segment 1132 bends relative to the main body segment 1131, and the second bending segment 1133 bends relative to the first bending segment 1132. Both the main body segment 1131 and the second bending segment 1133 are located on the same side of the first bending segment 1132. Thus, the main body segment 1131, the first bending segment 1132, and the second bending segment 1133 can approximately form a U-shaped space. Figure 2 and Figure 8 As shown, the first plastic-coated portion 12 can be plastic-coated on a part of the main body segment 1131 away from the first bending segment 1132, and the second plastic-coated portion 13 can be plastic-coated on another part of the main body segment 1131, the first bending segment 1132, the second bending segment 1133, and the connecting segment 1134. The magnetic ring groove 132 provided on the second plastic-coated portion 13 can be partially located in the U-shaped space, which helps to reduce the space occupied by the magnetic ring. Furthermore, the first bending segment 1132 and the second bending segment 1133 are bent towards the first end relative to the main body segment 1131, which allows the second end 112 to be relatively close to the housing 21 when the first end 111 of the copper busbar assembly 11 is inserted into the housing 21, thereby improving the structural compactness of the electric drive system.

[0076] An electric drive system provided in this embodiment of the present invention includes a motor 20, a controller 30, and a copper busbar assembly 10 as described above; the first end 111 of the copper busbar component 11 of the copper busbar assembly 10 is electrically connected to the motor 20, and the second end 112 of the copper busbar component 11 of the copper busbar assembly 10 is electrically connected to the controller 30.

[0077] The electric drive system can be a dual-motor electric drive system.

[0078] It should be noted that this utility model does not limit the specific composition of the electric drive system. For example, it may also include a reducer, an on-board charger 20, a high-low voltage DC-DC converter, a high-voltage power distribution module, etc.

[0079] In this embodiment, since the electric drive system includes the aforementioned copper busbar assembly 10, it possesses all the beneficial effects of the copper busbar assembly 10 in all the above embodiments, and has at least the following beneficial effects: By providing a first plastic-coated portion 12 and a second plastic-coated portion 13 sequentially arranged along the direction from the first end 111 to the second end 112 on the copper busbar assembly 11, an external plastic coating is formed on the copper busbar assembly 11, that is, the external plastic coating of the copper busbar assembly 11 is divided into two independent parts. Therefore, the injection molding of the first plastic-coated portion 12 and the second plastic-coated portion 13 needs to be performed separately, so that the contact area between the plastic and the mold is smaller in each injection molding process, reducing the resistance during demolding and reducing the difficulty of demolding. Furthermore, compared to dividing the external plastic coating into three or more parts, dividing the external plastic coating into two parts can reduce the number of injection molding processes, and the shape and structure of the two plastic-coated portions can be adapted to the motor 20 and controller 30 connected to both ends of the copper busbar assembly 11, so as to facilitate the assembly and connection of the copper busbar assembly 11 with the motor 20 and controller 30.

[0080] This utility model provides a vehicle including the electric drive system described above.

[0081] In this embodiment, since the vehicle includes the electric drive system described above, it possesses all the beneficial effects brought about by the electric drive systems of all the above embodiments, which will not be repeated here.

[0082] Although the present invention has been disclosed above, its protection scope is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the protection scope of the present invention.

Claims

1. A copper busbar assembly, characterized in that, The assembly includes a copper busbar assembly (11), a first plastic-coated portion (12), and a second plastic-coated portion (13). The copper busbar assembly (11) has a first end (111) for electrical connection with a motor (20) and a second end (112) for electrical connection with a controller (30). The first plastic-coated portion (12) and the second plastic-coated portion (13) are arranged sequentially from the first end (111) to the second end (112) of the copper busbar assembly (11) and respectively cover the outside of the copper busbar assembly (11).

2. The copper busbar assembly according to claim 1, characterized in that, The first plastic-coated part (12) is connected to the second plastic-coated part (13). One of the first plastic-coated part (12) and the second plastic-coated part (13) is provided with a groove (121), and the other is provided with a protrusion (131) that is inserted into the groove (121).

3. The copper busbar assembly according to claim 2, characterized in that, The insertion position of the groove (121) and the protrusion (131) is located between any two copper busbars (113) of the copper busbar assembly (11).

4. The copper busbar assembly according to claim 1, characterized in that, The second plastic-coated part (13) is provided with a magnetic ring groove (132) for mounting the magnetic ring.

5. The copper busbar assembly according to claim 1, characterized in that, The outer peripheral wall of the first plastic-coated part (12) is provided with an installation groove (122) surrounding the first plastic-coated part (12); The copper busbar assembly (10) also includes a sealing ring (15) disposed in the mounting groove (122).

6. The copper busbar assembly according to claim 1, characterized in that, The first plastic-coated part (12) has a dispensing groove (123) which penetrates the inner and outer sides of the wall of the first plastic-coated part (12).

7. The copper busbar assembly according to claim 1, characterized in that, The copper busbar (113) of the copper busbar assembly (11) has a first threaded sleeve (115) at the first end (111) of the copper busbar assembly (11); and / or, The copper busbar (113) of the copper busbar assembly (11) has a second threaded sleeve at the second end (112) of the copper busbar assembly (11), and the second plastic-coated part includes an insert protective structure (133) covering the second threaded sleeve.

8. The copper busbar assembly according to claim 1, characterized in that, The copper busbar (113) of the copper busbar assembly (11) includes a main body section (1131), a first bending section (1132), a second bending section (1133), and a connecting section (1134) connected sequentially from a first end (111) to a second end (112) of the copper busbar assembly (11). The first bending section (1132) bends toward one side of the main body section (1131), and the second bending section (1133) bends toward one side of the first bending section (1132) and is located on the same side of the main body section (1131) as the first bending section (1132).

9. An electric drive system, characterized in that, The assembly includes a motor (20), a controller (30), and a copper busbar assembly (10) as described in any one of claims 1-8, wherein the first end (111) of the copper busbar assembly (10) is electrically connected to the motor (20), and the second end (112) of the copper busbar assembly (11) is electrically connected to the controller (30).

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

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