Electric drive assembly system, vehicle and method for assembling electric drive assembly system

Abstract

To provide an electric drive assembly system, a vehicle including an electric drive assembly system, and a method for assembling an electric drive assembly system.SOLUTION: An electric drive assembly system includes: a housing 1 including a body 11 and a cover; and the following disposed in the housing. The following includes: an electric machine 2 including a rotor shaft; a gearbox assembly 3 including a gear input shaft 21 connected to the rotor shaft and disposed coaxially therewith, to receive torque from the electric machine; an electric machine control module 4 configured to control the electric machine, and superposed with the electric machine and / or the gearbox assembly in a direction transverse to the gear input shaft; and an electrical connection assembly configured to electrically connect the electric machine control module to a stator of the electric machine.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to the field of vehicles, and in particular to an electric drive assembly system, a vehicle including an electric drive assembly system, and a method for assembling an electric drive assembly system. [Background technology]

[0002] The electric drive assembly system is a key component of the vehicle and comprises an electric machine, a gearbox assembly and an electric machine controller. In known solutions, the electrical connection assembly between the electric machine controller and the electric machine is located at the non-drive end of the electric machine rotor shaft, while the connections between the electric machine and the gearbox assembly etc. are located at the drive end of the electric machine rotor shaft.

[0003] The length of the electric machine or the power of the electric machine is determined by the length between the drive end and the non-drive end of the electric machine rotor shaft. Various devices are attached to both the drive end and the non-drive end of the electric machine rotor shaft. For example, the electric connection assembly of the electric machine and the electric machine controller (e.g., inverter) are located at the non-drive end. Therefore, in the known electric drive assembly system, if the length of the electric machine is changed, it may affect the electrical connection assembly between the electric machine and the inverter. Therefore, if it is desired to change the length of the electric machine, the electrical connection assembly must be redesigned.

[0004] Additionally, the electrical connection assembly located at the non-drive end of the electric machine rotor shaft is air cooled and therefore has low cooling efficiency.

[0005] Furthermore, while known electric drive assembly systems have a long overall length, such long electric drive assembly systems are typically located at an offset location from the center of the vehicle because there is often insufficient space to locate them at a location near the center of the vehicle. This results in a large difference in length between the left and right drive shafts of the vehicle. An additional shaft must be located between the left and right drive shafts to balance the length difference.

[0006] Therefore, there is a need in the art for an electric drive assembly system that can address the above problems. Summary of the Invention

[0007] Therefore, the objective of the present disclosure is to provide an electric drive assembly system, a vehicle including the electric drive assembly system, and a method for assembling the electric drive assembly system. In the electric drive assembly system, the electrical connection assembly between the electric machine controller and the electric machine is installed at the drive end of the electric machine rotor shaft, so that the length of the electric machine can be changed without the need to redesign the electrical connection assembly. In addition, the electrical connection assembly in the electric drive assembly system can be cooled by the cooling oil of the gearbox assembly, so that the cooling efficiency is higher. Furthermore, the electric drive assembly system can reduce the difference in length between the left and right drive shafts of the vehicle.

[0008] In one aspect, the present disclosure provides: a housing having a body and a cover; The following, disposed in the housing: 1. An electric drive assembly system comprising: The above-mentioned following are: an electric machine having a rotor shaft; a gearbox assembly including a gear input shaft connected to and coaxially disposed relative to the rotor shaft for receiving torque from the electric machine; an electric machine control module configured to control the electric machine, the electric machine control module being superimposed on the electric machine and / or the gearbox assembly transversely relative to the gear input shaft; an electrical connection assembly configured to electrically connect the electric machine control module to a stator of the electric machine; In an electric drive assembly system, the electrical connection assembly is configured to electrically connect to the stator of the electric machine near a drive end of the rotor shaft of the electric machine; The body of the housing is provided with at least one opening in a sidewall projecting from the drive end of the rotor shaft, and the electrical connection assembly extends through the opening to provide an electric drive assembly system.

[0009] In one embodiment, the electrical connection assembly includes a plurality of bus bars, an injection molded member, and a sealing member, the injection molded member disposed on the bus bars and closing the opening, and the sealing member disposed between the injection molded member and the side wall.

[0010] In one embodiment, the injection molded member is formed on a plurality of the bus bars by injection molding.

[0011] In one embodiment, the busbar extends through the opening and includes a first portion that connects to the stator and a second portion that connects to the electromechanical control module.

[0012] In one embodiment, the cover comprises a gearbox cover, an electric machine cover and a control module cover, the first portion being located in a first accommodation space defined by the gearbox cover and the body of the housing and extending at least partially transverse to the gear input shaft, and the second portion being located in a second accommodation space defined by the control module cover and the body of the housing.

[0013] In one embodiment, the electrical connection assembly is secured to the body by a connecting member.

[0014] In one embodiment, the electromechanical control module includes a plurality of output terminals corresponding to a plurality of the bus bars, the plurality of output terminals being arranged in a direction parallel to the extension direction of the gear input shaft.

[0015] In one embodiment, the electromechanical control module includes a plurality of output terminals corresponding to a plurality of the bus bars, the plurality of output terminals being arranged in a direction perpendicular to the extension direction of the gear input shaft.

[0016] In one embodiment, the second portion extends parallel to the extension direction of the gear input shaft.

[0017] In one embodiment, the first portion and / or the second portion are arranged side by side in their respective width directions, or at least partially arranged side by side in their respective thickness directions.

[0018] In one embodiment, multiple said bus bars pass through the same opening or multiple corresponding openings in the side wall.

[0019] In another aspect, the present disclosure provides a vehicle including the electric drive assembly system described above.

[0020] In another aspect, the present disclosure provides a method for assembling an electric drive assembly system, comprising: installing an electric machine in a housing of the electric drive assembly system; inserting an electrical connection assembly at a drive end of a rotor shaft of the electric machine from outside the housing body into an opening in a side wall of the body; connecting the electrical connection assembly to a stator of the electric machine; installing a gearbox assembly and an electro-mechanical control module in said housing; connecting the electrical connection assembly to the electromechanical control module; The present invention provides an assembly method comprising the steps of:

[0021] In one embodiment of the method, the electric drive assembly system is configured as described above.

[0022] In order to more clearly describe the technical solutions in the embodiments of the present disclosure, the accompanying drawings of the embodiments of the present disclosure are briefly described below. The drawings are only used to describe some embodiments of the present disclosure, and are not intended to limit all embodiments of the present disclosure thereto. [Brief description of the drawings]

[0023] [Figure 1] FIG. 1 illustrates a schematic diagram of an electric drive assembly system according to an embodiment of the present disclosure. [Diagram 2] FIG. 2 shows a schematic diagram of an electrical connection assembly of the electric drive assembly system in FIG. [Diagram 3] FIG. 3 shows a perspective view of the electrical connection assembly in FIG. [Figure 4] FIG. 4 shows a schematic diagram of an electric drive assembly system according to another embodiment of the present disclosure. [Diagram 5] FIG. 5 shows a top view of the electric drive assembly system in FIG. [Figure 6] FIG. 6 shows a schematic diagram of an electric drive assembly system according to another embodiment of the present disclosure. [Figure 7] FIG. 7 shows a perspective view of a housing of the electric drive assembly system in FIG. [Figure 8] FIG. 8 illustrates a schematic diagram of an electrical connection assembly of an electric drive assembly system according to another embodiment of the present disclosure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] In order to clarify the technical solution objectives, technical solutions and advantages of the present disclosure, the technical solutions of the embodiments of the present disclosure will be described below clearly and completely in conjunction with the drawings accompanying certain embodiments of the present disclosure. In the drawings, the same reference numerals indicate the same components. It should be made clear that the described embodiments are only a part of the embodiments of the present disclosure and not all of them. All other embodiments that can be obtained by a person skilled in the art based on the described embodiments of the present disclosure without requiring inventive efforts shall be included in the protection scope of the present disclosure.

[0025] Unless otherwise defined, technical or scientific terms used herein shall have the common meaning understood by those skilled in the art. The terms "first", "second" and similar terms used in the specification and claims of the patent application of this disclosure are merely used to distinguish different components and do not indicate any order, quantity or importance. Similarly, terms such as "a" and "one" do not necessarily indicate a quantitative limitation. Terms such as "comprise", "include" or "have" mean that the element or object preceding the term covers the elements or objects listed thereafter and their equivalents without excluding other elements or objects. Terms such as "connected" or "communicated" are not limited to physical or mechanical connections or communications shown in the drawings, but may include equivalent connections or communications, whether direct or indirect. Terms such as "upper", "lower", "left", "right" and the like are used only to indicate relative positional relationships, and if the absolute positions of the objects described are changed, the relative positional relationships may change accordingly.

[0026] Preferred embodiments of an electric drive assembly system for a vehicle according to the present disclosure will be described in detail below with reference to Figures 1-8. Figures 1-3 show an electric drive assembly system included in a vehicle and its electrical connection assembly according to an embodiment of the present disclosure. Figures 4 and 5 show an electric drive assembly system included in a vehicle according to another embodiment of the present disclosure. Figures 6 and 7 show an electric drive assembly system included in a vehicle and its electrical connection assembly according to another embodiment of the present disclosure. Figure 8 shows an electrical connection assembly of an electric drive assembly system included in a vehicle according to another embodiment of the present disclosure. The differences between these embodiments are mainly in the electromechanical control module and / or the electrical connection assembly.

[0027] As shown in FIG. 1, the electric drive assembly system of the present disclosure includes a housing 1. The housing 1 includes a body 11 and a cover. The electric drive assembly system also includes an electric machine 2, a gearbox assembly 3, an electric machine control module 4, and an electrical connection assembly 5, all of which are disposed in the housing 1. The electric machine control module 4 can be, for example, an inverter. The inverter converts DC power into AC power having a fixed frequency and fixed voltage, or AC power having an adjustable frequency and adjustable voltage, for input to the electric machine 2. The electric machine 2 can be, for example, a permanent magnet synchronous machine or an AC asynchronous electric machine. The electric machine 2 is drivingly connected to a gearbox assembly 3, and the torque of the electric machine 2 is output after reduction in speed at the gearbox assembly 3. The electric machine control module in FIG. 1 is not visible since it is disposed in the housing. The reference number 4 merely indicates its location diagrammatically. Please refer to FIG. 4 for the actual electric machine control module. By locating devices such as the electric machine 2, the gearbox assembly 3, and the electric machine control module 4 in one housing, a highly integrated design of the electric drive assembly system can be achieved and space can be saved.

[0028] Specifically, the electric machine 2 has a rotor shaft (not shown). The electric machine 2 may include a rotor and a stator 22. In the electric machine, a fixed and immovable part is called a stator, and a rotatable part is called a rotor. For example, the stator is formed of a core, a winding, and a base. The core is generally formed of laminated silicon steel plates. The rotor is fixed to the base by a bearing or a bush, and includes a rotor shaft and a rotor core attached to the rotor shaft. The electric machine control module 4 is connected to the wiring terminal of the stator and generates a rotating magnetic field by inputting AC power to the stator. The rotor is cut by the magnetic field lines in the rotating magnetic field, and an output current is generated. In addition, when the wheels of the vehicle drive the rotor in reverse rotation, a rotating magnetic field in the other direction is induced, and the power can be returned to the battery via the electric machine control module 4, which is an inverter.

[0029] The gearbox assembly 3 has a gear input shaft 21. The gear input shaft 21 connects to the rotor shaft and is coaxially disposed therewith to receive torque from the electric machine. For example, the gear input shaft 21 may be rotatably attached to the rotor shaft of the electric machine. It should be understood that the rotor shaft and the gear input shaft may be two separate shafts rotatably connected by a connecting element (e.g., connected by a spline) or may be the same shaft, without any limitation thereto.

[0030] The gearbox assembly 3 may further include an intermediate shaft in gear engagement with the gear input shaft 21, and a differential assembly (e.g., differential 6 shown in FIG. 6) capable of outputting the torque generated by the electric machine 2 after reduction in speed. The configuration of the gearbox assembly 3 is common practice in the art and will not be described in detail in this disclosure.

[0031] The electric machine control module 4 is configured to control the electric machine 2. The electric machine control module 4 may include various electronic and electrical control elements and may take the form of, for example, a circuit board. Through control of an insulated gate bipolar transistor (IGBT) integrated power module by the electronic and electrical control elements, the electric machine control module 4 may output a controllable three-phase sinusoidal AC current to control the rotational speed and torque of the electric machine. The electric machine control module 4 is common in the art and will not be described in detail in this disclosure.

[0032] Also, the electric machine control module 4 is superimposed on the electric machine 2 and / or the gearbox assembly 3 in a transverse direction relative to the gear input shaft 21. For example, the electric machine control module 4 in FIG. 1 is superimposed on the electric machine 2 in a vertical direction perpendicular to the gear input shaft 21. Simply put, the electric machine control module 4 and the electric machine 2 may be described as being superimposed. In another example, for example, as shown in FIG. 4, FIG. 6, and FIG. 7, the electric machine control module 4 is superimposed on the gearbox assembly 3 in a vertical direction perpendicular to the gear input shaft 21. Simply put, the electric machine control module 4 and the gearbox assembly 3 may be described as being superimposed. The electric machine control module 4 in FIG. 4, FIG. 6, and FIG. 7 may be superimposed on the electric machine 2 in a transverse direction relative to the gear input shaft 21 and may be inclined relative to the vertical direction in the drawings. The specific position where the electric machine control module 4 is disposed is determined by the arrangement of the electronic components of the electric machine control module 4, the shape of the housing 1, or the configuration of the electric machine 2 and the gearbox assembly 3.

[0033] As shown in FIG. 1, the cover includes a gearbox cover 12, an electric machine cover 13, and a control module cover 14. As shown in FIG. 2, the control module cover 14 may be located on top of the body 11, with the gearbox cover 12 and the electric machine cover 13 located at two ends of the body 11, i.e., the drive end and the non-drive end of the electric machine rotor shaft. The gearbox assembly 3 is located in a first accommodation space formed by the body 11 and the gearbox cover 12. The electric machine control module 4 is located in a second accommodation space formed by the body 11 and the control module cover 14. The electric machine 2 is located in a third accommodation space formed by the body 11 and the electric machine cover 13. Specifically, the housing body 11 includes a base portion 19 and a number of walls (e.g., a side wall 10 protruding from the drive end of the rotor shaft, a first wall 20, a second wall 24, and a third wall 25) extending from the base portion toward its top edge 23. The side wall 10, the first wall 20, the second wall 24, and the third wall 25 may be, for example, walls extending perpendicular to the base portion 19. The third wall 25 is located near the non-driving end of the electric machine rotor shaft. The first wall 20 and the second wall 24 extend between the side wall 10 and the third wall 25. Also, as described above, the body 11 further comprises a top wall (not shown) on which the electric machine control module 4 rests. The side wall 10 may be bent near the top edge 23 to define a first accommodation space together with the gearbox cover 12. The top wall may be recessed relative to the top edge 23 to define a second accommodation space together with the control module cover 14. The second wall 24 together with the top wall, the side wall 10, and the electric machine cover 13 defines a third accommodation space. In another example, for example, the second wall 24 takes the form of a partial cylinder.

[0034] The electrical connection assembly 5 is configured to electrically connect the electric machine control module 4 to the stator 22 of the electric machine 2, more precisely to the wiring terminals of the stator 22. The electrical connection assembly 5 is configured to electrically connect to the stator 22 of the electric machine 2 near the gear input shaft 21. Please refer to FIG. 4 for the location of the stator 22. In other words, the electrical connection assembly 5 is configured to electrically connect to the stator 22 near the drive end of the rotor shaft of the electric machine. As shown in FIGS. 1, 4 and 6, the body 11 of the housing 1 is provided with an opening in the side wall 10 protruding from the drive end of the rotor shaft. The electrical connection assembly 5 passes through an opening, for example the opening 15 shown in FIG. 7. For example, the opening is located in a free area of ​​the side wall 10 near the drive end of the rotor shaft of the electric machine and above the gear input shaft 21 or the differential 6. The electric drive assembly system of the present disclosure therefore more efficiently utilizes the space at the drive end of the rotor shaft of the electric machine that is not occupied by the gearbox assembly or differential, resulting in a more integrated design.

[0035] By disposing the electrical connection assembly 5 near the driving end of the electric machine rotor shaft of the electric drive assembly system, its non-driving end can be expanded; that is, the main body 11 of the housing 1 can be expanded in the direction toward the electric machine cover 13; that is, the length of the stator or electric machine accommodated therein can be changed without the need to redesign the electric machine control module and the electrical connection assembly. Therefore, the electric drive assembly system of the present disclosure has application flexibility and low cost. Also, the cooling oil stored in the gearbox assembly 3 can splash and cool the first part 511 of the electrical connection assembly 5, which is located in the first accommodation space accommodating the gearbox assembly. Therefore, the electric drive assembly system of the present disclosure has higher cooling efficiency.

[0036] As shown in FIG. 2, the electrical connection assembly 5 includes a plurality of bus bars 51 (e.g., copper bus bars) and an injection-molded member 52. The number of bus bars 51 may be three, and each bus bar may be used for three phases of current. The injection-molded member 52 is disposed on the bus bars 51 to close the opening 15. See FIG. 7. For example, the injection-molded member 52 may be formed on the plurality of bus bars 51 by injection molding. The electrical connection assembly 5 may further include a seal member (not shown in FIG. 2) to seal the second accommodation space accommodating the electromechanical control module 4 from the first accommodation space accommodating the gearbox assembly 3. The seal member is disposed between the injection-molded member 52 and the side wall 10 of the housing 1. As shown in FIG. 7, the seal member may be disposed in a groove 16 around the opening 15. In another example, the seal member may be disposed in a groove on the side of the injection-molded member 52 facing the opening, such as the seal member 53 shown in FIG. 8. For example, the seal member 53 may be integrally formed with the bus bar 51 and the injection molded member 52, or may be a separate part. Also, as shown in Figures 1, 4 and 6, the injection molded member 52 is fitted into the opening from the outside of the body 11. For example, the electrical connection assembly 5 is fixed to the body 11 by a connection member. For example, the electrical connection assembly 5 is fixed to the side wall 10 by a screw or bolt that passes through a mounting hole in the injection molded member 52. Of course, other methods such as gluing, riveting, welding, etc. may be used in the present disclosure.

[0037] The electromechanical control module 4 includes a plurality of output terminals 41 corresponding to a plurality of bus bars 51, as shown in Fig. 5. In some examples, the plurality of output terminals 41 are arranged in a direction parallel to the extension direction of the gear input shaft 21. In other examples, the plurality of output terminals 41 are arranged in a direction perpendicular to the extension direction of the gear input shaft 21 (e.g., the embodiments in Figs. 1, 4, and 5). As shown in Fig. 5, the arrangement direction of the plurality of output terminals 41 is a horizontal extension direction in the figure perpendicular to the gear input shaft 21 oriented in the vertical direction.

[0038] Specifically, the busbar 51 passes through the opening. As shown in FIG. 3 and FIG. 8, the busbar 51 includes a first portion 511 connected to the stator 22 and a second portion 512 connected to the electromechanical control module 4. The first portion 511 is located in a first accommodation space defined by the gearbox cover 12 and the main body 11 of the housing 1, and extends at least partially transversely to the gear input shaft 21. Here, "transversely to" the gear input shaft 21 includes a perpendicular direction to the gear input shaft 21 and an oblique direction at an angle to the gear input shaft 21. As shown in FIG. 6, the main body 11 is provided with another opening 18 in the side wall 10 protruding from the drive end of the rotor shaft. The first portion 511 is electrically connected to the wiring terminal of the stator exposed through the another opening 18. The second portion 512 is located in a second accommodation space defined by the control module cover 14 and the main body 11 of the housing 1. As shown in FIG. 3, FIG. 4 and FIG. 8, the first portion 511 has a bent shape, and the second portion 512 extends parallel to the extension direction of the gear input shaft 21. As shown in FIG. 3, a portion of each first portion 511 extends perpendicular to the gear input shaft 21, and another portion extends parallel to the gear input shaft 21. The second portions 512 have the same length. As shown in FIG. 4 and FIG. 5, a plurality of portions of the first portion 511 extend transversely to the extension direction of the gear input shaft 21, and the second portions 512 have the same length. As shown in FIG. 6 and FIG. 8, the first portion 511 has a bent shape, and the second portions 512 extend parallel to the extension direction of the gear input shaft 21 and have different lengths. In some examples, as shown in FIG. 2 and FIG. 3, the first portions 511 are arranged side by side in the width direction, and the three first portions 511 may be spaced apart by a large distance. In another example, the first portions 511 are at least partially arranged side by side in the thickness direction. Referring to Fig. 8, a portion of the three first portions 511 overlaps with each other since they are arranged side by side in the thickness direction.Of course, the first portions 511 may be arranged generally side by side in the thickness direction such that only one first portion 511 is visible when viewed in the thickness direction of the first portion 511. The second portions 512 may be arranged in a similar manner to the first portions 511. As shown in FIG. 3, the second portions 512 are arranged side by side in the width direction. As shown in FIG. 8, the second portions 512 are arranged side by side at least partially in the thickness direction such that only one second portion 512 is visible when viewed in the thickness direction of the second portions 512, and therefore overlap. Compared with the electrical connection assembly in FIG. 3, the injection molded member 52 of the electrical connection assembly shown in FIG. 8 may have a smaller size while reducing the required sealing area, thereby achieving better sealing results and more efficient use of space with a higher degree of integration. Also, in some examples, the bus bars 51 pass through the same opening in the side wall 10. In other examples, the bus bars 51 pass through multiple openings in the side wall 10. The number of openings corresponds to the number of busbars. The different designs of the busbars mentioned above depend on the configuration of the housing, the gearbox assembly and the electric machine. It can be said that the design of the busbars depends on the remaining space at the drive end that is not occupied by the gearbox assembly and the electric machine. In this way, the electric drive assembly system of the present disclosure can make better use of the space in the gearbox assembly, resulting in a more integrated design.

[0039] The left and right drive shafts of the vehicle are connected to a differential in a gearbox assembly. The differential is, for example, offset from the center of the vehicle. In the vehicle of the present disclosure, the electric drive assembly system described above can reduce the overall length of the electric machine because the electrical connection assembly between the electric machine control module and the electric machine is located at the drive end of the electric machine rotor shaft, which allows the electric drive assembly system to be located closer to the center of the vehicle, thereby reducing the difference in length between the left and right drive shafts. This, in turn, can reduce the probability of using an additional shaft to balance the difference in length between the left and right drive shafts, or can avoid the use of such an additional shaft.

[0040] The method for assembling an electric drive assembly system according to the present disclosure comprises the steps of: installing an electric machine 2 in a housing 1 of the electric drive assembly system; inserting an electrical connection assembly 5 from outside the body 11 of the housing 1 into an opening provided in the side wall 10 of the body 11 at the drive end of the rotor shaft of the electric machine 2; connecting the electrical connection assembly 5 to the stator 22 of the electric machine 2 (more precisely, to the wiring terminal of the stator 22); installing a gearbox assembly 3 and an electric machine control module 4 in the housing 1 of the electric drive assembly system; and connecting the electrical connection assembly 5 to the electric machine control module 4. The above-mentioned electric drive assembly can be assembled according to the present assembly method. For example, the above-mentioned step of inserting the electrical connection assembly 5 can be specifically performed in a direction parallel to the gear input shaft 21.

[0041] The technical features disclosed above are not limited to combination with other features disclosed, and a person skilled in the art can make combinations of other technical features according to the objectives of the present invention to achieve the objectives of the present disclosure.

Claims

1. A housing (1) comprising a main body (11) and a cover, The following are arranged in the housing (1): An electric drive assembly system comprising, The following are: An electric machine (2) equipped with a rotor shaft, A gearbox assembly (3) includes a gear input shaft (21) connected to the rotor shaft and coaxially arranged therewith to receive torque from the electromachine, An electromechanical control module (4) configured to control the electromechanical machine (2), wherein the electromechanical control module (4) is superimposed laterally on the electromechanical machine (2) and / or the gearbox assembly (3) with respect to the gear input shaft (21), An electrical connection assembly (5) configured to electrically connect the electromechanical control module (4) to the stator (22) of the electromechanical unit (2), In an electric drive assembly system, The electrical connection assembly (5) is configured to be electrically connected to the stator (22) of the electric machine (2) near the drive end of the rotor shaft of the electric machine. The main body (11) of the housing (1) has at least one opening in the side wall (10) protruding from the drive end of the rotor shaft, and the electrical connection assembly (5) penetrates the opening. An electric drive assembly system characterized by the following:

2. The electrical connection assembly (5) comprises a plurality of busbars (51), an injection-molded member (52), and a sealing member (53), wherein the injection-molded member (52) is positioned on the busbars (51) and closes the opening, and the sealing member (53) is positioned between the injection-molded member and the side wall (10). The electric drive assembly system according to claim 1.

3. The injection-molded member (52) is formed by injection molding on a plurality of busbars (51). The electric drive assembly system according to claim 2, characterized in that it is as described above.

4. The busbar (51) has a first portion (511) that passes through the opening and is connected to the stator (22), and a second portion (512) that is connected to the electromechanical control module (4). The electric drive assembly system according to claim 2, characterized in that it is as described above.

5. The cover comprises a gearbox cover (12), an electromechanical cover (13), and a control module cover (14). The first portion (511) is located in a first housing space defined by the gearbox cover (12) and the main body (11) of the housing (1), and extends at least partially laterally with respect to the gear input shaft (21), The second portion (512) is located in a second housing space defined by the control module cover (14) and the main body (11) of the housing (1). The electric drive assembly system according to feature 4.

6. The electric drive assembly system according to claim 2, characterized in that the electrical connection assembly (5) is fixed to the main body (11) by a connecting member.

7. The electromechanical control module (4) comprises a plurality of output terminals (41) corresponding to a plurality of busbars (51), and the plurality of output terminals (41) are arranged in a direction parallel to the extending direction of the gear input shaft (21). The electric drive assembly system according to feature 4.

8. The electromechanical control module (4) comprises a plurality of output terminals (41) corresponding to a plurality of busbars (51), and the plurality of output terminals (41) are arranged perpendicular to the extending direction of the gear input shaft (21). The electric drive assembly system according to feature 4.

9. The second portion (512) extends parallel to the extending direction of the gear input shaft (21), The electric drive assembly system according to claim 7 or 8, characterized by the features described above.

10. The first portion (511) and / or the second portion (512) are arranged side by side in their respective width directions, or at least partially arranged side by side in their respective thickness directions. The electric drive assembly system according to claim 7 or 8, characterized by the features described above.

11. Multiple busbars (51) penetrate the same opening or multiple corresponding openings in the side wall (10). The electric drive assembly system according to claim 10.

12. A vehicle characterized by comprising an electric drive assembly system according to any one of claims 1 to 8.

13. A method for assembling an electric drive assembly system, The steps include installing the electric machine (2) into the housing (1) of the electric drive assembly system, The steps include inserting the electrical connection assembly (5) into an opening provided in the side wall (10) of the housing (1) from the outside of the main body (11) of the housing (1) at the drive end of the rotor shaft of the electric machine (2), The steps include connecting the electrical connection assembly (5) to the stator (22) of the electric machine (2), The steps include installing the gearbox assembly (3) and the electromechanical control module (4) in the housing (1), The steps include connecting the electrical connection assembly (5) to the electromechanical control module (4), An assembly method characterized by comprising the following features.

14. A method for assembling an electric drive assembly system according to any one of claims 1 to 8, The steps include installing the electric machine (2) into the housing (1) of the electric drive assembly system, The steps include inserting the electrical connection assembly (5) into an opening provided in the side wall (10) of the housing (1) from the outside of the main body (11) of the housing (1) at the drive end of the rotor shaft of the electric machine (2), The steps include connecting the electrical connection assembly (5) to the stator (22) of the electric machine (2), The steps include installing the gearbox assembly (3) and the electromechanical control module (4) in the housing (1), The steps include connecting the electrical connection assembly (5) to the electromechanical control module (4), An assembly method characterized by comprising the following features.

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