Electric drive assembly shell, electric drive assembly and vehicle

Abstract

The utility model relates to an electric drive assembly shell, an electric drive assembly and a vehicle, the electric drive assembly shell comprises a shell body, a first containing cavity used for containing a motor assembly and a speed reducer assembly is formed in the shell body, the shell body is further provided with a differential mounting part, and the differential mounting part is used for mounting a differential structure. Due to the fact that the motor assembly, the speed reducer assembly and the differential structure are in transmission connection, the motor assembly, the speed reducer assembly and the differential structure are installed on the shell body at the same time, integration of the motor assembly, the speed reducer assembly and the differential structure can be achieved, the overall size of the electric drive assembly is reduced, and therefore the space occupied by the electric drive assembly is reduced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of electric drive assemblies, and in particular, to an electric drive assembly housing, an electric drive assembly, and a vehicle. Background Art

[0002] As the power source of a vehicle, an electric drive assembly generally includes structures such as a motor, a speed reducer, and a differential. In the related art, the overall integration of the electric drive assembly is low and the volume is large, and when it is arranged on a vehicle, it will occupy a relatively large amount of space on the vehicle. Utility Model Content

[0003] The purpose of the present disclosure is to provide an electric drive assembly housing, an electric drive assembly, and a vehicle to solve the above technical problems.

[0004] To achieve the above purpose, as the first aspect of the present disclosure, there is provided an electric drive assembly housing, including a housing body. The interior of the housing body has a first accommodation cavity for accommodating a motor assembly and a speed reducer assembly. The housing body also has a differential mounting portion for mounting a differential structure.

[0005] Optionally, the differential structure is a differential or a differential lock, and the differential mounting portion is configured to be adaptively connected to both the differential and the differential lock.

[0006] Optionally, the differential mounting portion includes a first bearing groove and a second bearing groove. The first bearing groove is used to accommodate the first bearing on the differential or the first bearing on the differential lock, and the second bearing groove is used to accommodate the second bearing on the differential or the second bearing on the differential lock.

[0007] Optionally, the housing body includes a first half housing and a second half housing that can be connected to each other. The first bearing groove is provided on the first half housing, and the second bearing groove is provided on the second half housing.

[0008] Optionally, the interior of the housing body has a second accommodation cavity that communicates with the first accommodation cavity and is used to accommodate the differential structure.

[0009] Optionally, the differential structure is a differential or a differential lock. A through-hole positioning portion is provided on the housing body, and the projection of the through-hole positioning portion along its axial direction can be located in the second accommodation cavity. The through-hole positioning portion can be penetrated to form a through-hole for the harness of the differential lock to pass through.

[0010] Optionally, the through-hole positioning portion is a blind hole.

[0011] Optionally, an electric control mounting portion is provided on the housing body, the electric control mounting portion is used for mounting a motor controller, and the via hole positioning portion is disposed close to the electric control mounting portion.

[0012] Optionally, the housing body has a decoupling mounting portion, and the decoupling mounting portion is used for mounting a decoupling mechanism.

[0013] Optionally, the decoupling mounting portion includes a first recessed portion provided on the outer surface of the housing body, the first recessed portion is used for accommodating the decoupling mechanism, and the decoupling mounting portion further includes a decoupling connection portion provided on the outer surface of the housing body, and the decoupling connection portion is located within the first recessed portion and is used for connecting the decoupling mechanism.

[0014] Optionally, the first recessed portion and the differential mounting portion are arranged along the Y direction, and the first recessed portion and the differential mounting portion are arranged along the X direction with respect to the first accommodating cavity, and the X direction is perpendicular to the Y direction.

[0015] Optionally, an electric control mounting portion for mounting a motor controller is provided on the housing body, and the electric control mounting portion includes a second recessed portion provided on the outer surface of the housing body, the second recessed portion is used for accommodating the motor controller and enables the high-voltage harness interface of the motor controller to be located within the second recessed portion.

[0016] Optionally, the housing body includes a first half-shell and a second half-shell, the first half-shell and the second half-shell can be connected to each other and jointly define the first accommodating cavity, and the second recessed portion is provided on the outer surface of the first half-shell.

[0017] Optionally, the first accommodating cavity includes a motor accommodating cavity for accommodating a motor assembly and a reduction accommodating cavity for accommodating a reduction gear assembly, the motor accommodating cavity and the reduction accommodating cavity communicate with each other, the first half-shell includes a first part and a second part, the motor accommodating cavity is located within the first part, and the second part is connected to the second half-shell and jointly defines the reduction accommodating cavity;

[0018] The second part has a protruding portion protruding from the first part, and the outer surface of the protruding portion and the outer surface of the first part form the second recessed portion.

[0019] Optionally, the second recessed portion and at least a part of the first accommodating cavity are arranged along the Z direction, and the differential mounting portion and the first accommodating cavity are arranged along the X direction, and the Z direction is perpendicular to the X direction.

[0020] As a second aspect of the present disclosure, the present disclosure provides an electric drive assembly, including a motor assembly, a speed reducer assembly, a differential structure, and the above-mentioned electric drive assembly housing. The motor assembly and the speed reducer assembly are both installed in the first accommodation cavity, and the differential structure is installed in the differential installation part.

[0021] Optionally, the differential structure is a differential lock or a differential.

[0022] Optionally, the differential installation part includes a second accommodation cavity formed inside the housing body. The second accommodation cavity is communicated with the first accommodation cavity. The differential lock is accommodated in the second accommodation cavity. A through hole communicated with the second accommodation cavity is formed on the housing body. The wire harness of the differential lock passes through the through hole, and a sealing structure is arranged between the through hole and the wire harness.

[0023] Optionally, the electric drive assembly further includes a decoupling mechanism. The housing body has a decoupling installation part, and the decoupling mechanism is installed in the decoupling installation part.

[0024] Optionally, the drive assembly further includes a motor controller. An electric control installation part is arranged on the housing body, and the motor controller is installed in the electric control installation part.

[0025] As a third aspect of the present disclosure, the present disclosure provides a vehicle, including the above-mentioned electric drive assembly.

[0026] Through the above technical solutions, since the motor assembly, the speed reducer assembly, and the differential structure have a transmission connection relationship, the electric drive assembly housing provided by the present disclosure can enable the motor assembly, the speed reducer assembly, and the differential structure to be all installed on the same housing body, thereby realizing the integration of the motor assembly, the speed reducer assembly, and the differential structure, and further improving the integration degree and structural compactness of the electric drive assembly. On the one hand, the volume of the electric drive assembly can be reduced to reduce the occupied space of the electric drive assembly on the vehicle. On the other hand, it is also convenient for the overall installation of the electric drive assembly.

[0027] Other features and advantages of the present disclosure will be described in detail in the subsequent specific implementation part. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings are used to provide a further understanding of the present disclosure, and constitute a part of the specification. Together with the following specific implementation manners, they are used to explain the present disclosure, but do not constitute a limitation to the present disclosure. In the drawings:

[0029] Figure 1 is a three-dimensional view of an electric drive assembly provided by an embodiment of the present disclosure;

[0030] Figure 2It is a side view of an electric drive assembly provided by an embodiment of the present disclosure. A differential lock is installed inside the drive assembly housing;

[0031] Figure 3 It is Figure 2 a partial cross-sectional view along the A-A direction in;

[0032] Figure 4 It is Figure 2 a partial cross-sectional view along the B-B direction in;

[0033] Figure 5 It is a side view of an electric drive assembly provided by another embodiment of the present disclosure. A differential is installed inside the drive assembly housing;

[0034] Figure 6 It is Figure 5 a partial cross-sectional view along the C-C direction in;

[0035] Figure 7 It is Figure 5 a partial cross-sectional view along the D-D direction in;

[0036] Figure 8 It is a perspective view of an electric drive assembly provided by an embodiment of the present disclosure. The motor controller is not shown;

[0037] Figure 9 It is a perspective view of an electric drive assembly provided by an embodiment of the present disclosure (with Figure 1 a different perspective);

[0038] Figure 10 It is a schematic diagram of an electric drive assembly provided by an embodiment of the present disclosure. The decoupling mechanism is in a disconnected state;

[0039] Figure 11 It is a schematic diagram of an electric drive assembly provided by an embodiment of the present disclosure. The decoupling mechanism is in a connected state.

[0040] Description of Reference Numerals

[0041] 100 - Electric drive assembly housing; 200 - Decoupling mechanism; 300 - Motor controller; 301 - High-voltage harness interface; 400 - Motor assembly; 500 - Reducer assembly; 600 - Differential structure; 10 - Electric drive assembly; 11 - Second accommodation cavity; 121 - First bearing groove; 122 - Second bearing groove; 2 - Differential; 3 - Differential lock; 31 - Harness; 4 - First half shell; 41 - First part; 42 - Second part; 43 - First shaft hole; 421 - Protrusion; 5 - Second half shell; 51 - Second shaft hole; 6 - Through-hole positioning part; 7 - Electric control installation part; 71 - Second recess; 72 - Mounting seat; 8 - Through-hole; 9 - Decoupling connection part; 13 - Sealing structure; 14 - First recess. Specific embodiments

[0042] The following will describe in detail the specific embodiments of the present disclosure with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for the purpose of illustrating and explaining the present disclosure, and are not intended to limit the present disclosure.

[0043] In the present disclosure, unless otherwise stated, the X-direction, Y-direction, and Z-direction are defined according to the Figure 1 drawing direction in []. When the electric drive assembly 10 is installed on a vehicle, the X-direction may be the front-rear direction of the vehicle, the Y-direction may be the left-right direction of the vehicle, and the Z-direction may be the up-down direction of the vehicle. "Inner" and "outer" refer to the inside and outside of the contour of the corresponding component. In addition, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0044] As a first aspect of the present disclosure, as Figures 1 to 11 shown, the present disclosure provides an electric drive assembly housing 100, which includes a housing body. The interior of the housing body has a first accommodation cavity for accommodating a motor assembly 400 and a reducer assembly 500. The housing body also has a differential mounting portion for mounting a differential structure 600.

[0045] Through the above technical solution, since the motor assembly 400, the reducer assembly 500, and the differential structure 600 are in a transmission connection relationship, the electric drive assembly housing 100 provided by the present disclosure can enable the motor assembly 400, the reducer assembly 500, and the differential structure 600 to be all installed on the same housing body, thereby realizing the integration of the motor assembly 400, the reducer assembly 500, and the differential structure 600, and further improving the integration degree and structural compactness of the electric drive assembly 10. On the one hand, the volume of the electric drive assembly 10 can be reduced to reduce the occupied space of the electric drive assembly 10 on the vehicle. On the other hand, it is also convenient for the overall installation of the electric drive assembly 10.

[0046] The differential structure 600 can be installed inside or outside the housing body, and the present disclosure does not limit this. As an implementation provided by the present disclosure, the interior of the housing body may have a second accommodation cavity 11. The second accommodation cavity 11 communicates with the first accommodation cavity and is used to accommodate the differential structure 600. Since the motor assembly 400 is drivingly connected to the reducer assembly 500, and the reducer assembly 500 is drivingly connected to the differential structure 600, the power generated by the motor assembly 400 is decelerated and torque-increased by the reducer assembly 500 and then transmitted to the wheels via the differential structure 600. By arranging the differential structure 600 in the second accommodation cavity 11 communicating with the first accommodation cavity, on the one hand, it is convenient for the differential structure 600 to be drivingly connected to the reducer assembly 500 in the first accommodation cavity; on the other hand, the housing body can protect the differential structure 600.

[0047] As Figure 2 and Figure 5 shown, the above-mentioned differential structure 600 can be a differential 2 or a differential lock 3 (i.e., a differential 2 with a locking function), and the differential mounting portion is configured to be adaptively connectable to both the differential 2 and the differential lock 3. That is to say, the differential mounting portion can be connected to both the differential 2 and the differential lock 3. In this way, the electric drive assembly housing 100 provided by the present disclosure can be applicable to different vehicle models, that is, it can be applicable to vehicle models equipped with a differential 2 and can also be applicable to vehicle models equipped with a differential lock 3, realizing the versatility of the electric drive assembly housing 100. During the production process of the electric drive assembly housing 100, an electric drive assembly housing 100 that can be adapted to different vehicle models can be produced by a set of manufacturing molds, thereby reducing the manufacturing cost of the vehicle.

[0048] In order to enable the differential mounting portion to install both the differential 2 and the differential lock 3, in an implementation provided by the present disclosure, the differential mounting portion includes a first connection portion and a second connection portion. There is a first distance between the first connection portion and the second connection portion. A first mounting structure and a second mounting structure can be provided on the differential 2, and a second distance equal to the first distance is provided between the first mounting structure and the second mounting structure. A third mounting structure and a fourth mounting structure can be provided on the differential lock 3, and a third distance equal to the first distance is provided between the third mounting structure and the fourth mounting structure. Since the first distance, the second distance, and the third distance are all equal, the first mounting structure and the second mounting structure can be respectively connected to the first connection portion and the second connection portion, and the third mounting structure and the fourth mounting structure can also be respectively connected to the first connection portion and the second connection portion.

[0049] In another implementation of the present disclosure, as Figure 4 and Figure 7As shown, the differential installation part includes a first bearing groove 121 and a second bearing groove 122. The first bearing groove 121 is used to accommodate the first bearing on the differential 2 or the first bearing on the differential lock 3, and the second bearing groove 122 is used to accommodate the second bearing on the differential 2 or the second bearing on the differential lock 3.

[0050] Since the outer diameters of the first bearing and the second bearing on the differential 2 are the same as those of the first bearing and the second bearing on the differential lock 3, and the distance between the first bearing and the second bearing on the differential 2 is equal to the distance between the first bearing and the second bearing on the differential lock 3, therefore, the same first bearing groove 121 can accommodate both the first bearing on the differential 2 and the first bearing on the differential lock 3, and the same second bearing groove 122 can accommodate both the second bearing on the differential 2 and the second bearing on the differential lock 3.

[0051] To facilitate the connection between the differential 2 or the differential lock 3 and the first bearing groove 121 and the second bearing groove 122, optionally, as Figure 4 and Figure 7 shown, the housing body includes a first half housing 4 and a second half housing 5. The first half housing 4 and the second half housing 5 can be connected to each other. The first bearing groove 121 is provided on the first half housing 4, and the second bearing groove 122 is provided on the second half housing 5. Since the first bearing groove 121 is provided on the first half housing 4 and the second bearing groove 122 is provided on the second half housing 5, during the installation of the differential 2 or the differential lock 3, one end of the differential 2 or the differential lock 3 can be first inserted into one of the first bearing groove 121 and the second bearing groove 122, and the other of the first bearing groove 121 and the second bearing groove 122 can be installed at the other end of the differential 2 or the differential lock 3, and the second half housing 5 and the first half housing 4 are connected to each other, thereby realizing the fixation of the differential 2 or the differential lock 3.

[0052] For the embodiment in which the housing body has a second accommodation cavity 11 for accommodating the differential structure 600 inside, it can be understood that the first half housing 4 and the second half housing 5 jointly define the second accommodation cavity 11. After the first half housing 4 and the second half housing 5 are opposed to each other, the differential structure 600 is accommodated in the second accommodation cavity 11.

[0053] To further improve the compatibility of the electric drive assembly housing 100, optionally, as Figure 6 shown, a through hole positioning part 6 is provided on the housing body. The projection of the through hole positioning part 6 along its axial direction can be located in the second accommodation cavity 11, and the through hole positioning part 6 can be penetrated to form a through hole 8 for the wire harness 31 of the differential lock 3 to pass through (as Figure 3 shown).

[0054] When the electric drive assembly 10 provided by the present disclosure is used in a vehicle model equipped with a differential lock 3, since the differential lock 3 needs to be electrically connected to the motor controller 300 through a wire harness 31, the via hole positioning portion 6 can be penetrated to form a via hole 8, so that the wire harness 31 of the differential lock 3 can pass through the via hole 8 and be connected to the motor controller 300. Here, the via hole positioning portion 6 plays a role in pre-positioning the penetration position of the via hole 8, and the projection of the via hole positioning portion 6 along its axial direction can be located within the second accommodation cavity 11, which can ensure that after the via hole positioning portion 6 is processed into the via hole 8, the via hole 8 can communicate with the second accommodation cavity 11.

[0055] Optionally, a sealing structure 13 can be provided at the via hole 8 to seal the gap between the hole wall of the via hole 8 and the wire harness 31.

[0056] It can be understood that when the electric drive assembly 10 provided by the present disclosure is used in a vehicle model equipped with a differential 2, there is no need to penetrate the via hole positioning portion 6, and the via hole positioning portion 6 will not affect the installation of the differential 2. By providing the via hole positioning portion 6, the housing body provided by the present disclosure can meet both the installation requirements of the differential 2 and the wire passing requirements during the installation of the differential lock 3.

[0057] The present disclosure does not limit the specific structure of the via hole positioning portion 6. In an embodiment of the present disclosure, the via hole positioning portion 6 is a blind hole. Among them, the opening of the blind hole can be arranged facing the second accommodation cavity 11, or can also be arranged facing the outside of the housing body. The blind hole can not only maintain the sealing state of the second accommodation cavity 11, but also mark the drilling position of the via hole 8, so as to facilitate the processing of the housing body into a housing body suitable for the installation of the differential lock 3.

[0058] In another embodiment of the present disclosure, the via hole positioning portion 6 can also be an annular groove.

[0059] To further improve the integration and structural compactness of the electric drive assembly 10, optionally, an electric control installation portion 7 can be provided on the housing body, and the electric control installation portion 7 is used for installing the motor controller 300.

[0060] Optionally, the via hole positioning portion 6 can be arranged close to the electric control installation portion 7. Arranging the via hole positioning portion 6 at a position close to the electric control installation portion 7 can shorten the connection distance between the differential 2 and the motor controller 300, and at the same time facilitate the routing and arrangement of the lines.

[0061] Optionally, as Figure 8 and Figure 9As shown, the electric control installation part 7 may include a second recessed part 71 provided on the outer surface of the housing body. The second recessed part 71 is used to accommodate the motor controller 300 and can make the high-voltage harness interface 301 of the motor controller 300 located within the second recessed part 71. By providing the second recessed part 71 on the outer surface of the housing body and arranging the motor controller 300 and the high-voltage harness interface 301 of the motor controller within the second recessed part 71, the installation height of the motor controller 300 can be reduced, thereby reducing the overall height of the electric drive assembly 10 (i.e., the dimension in the Z direction), making the overall structure of the electric drive assembly 10 more compact and having a higher integration degree.

[0062] In this way, for the case where the electric drive assembly 10 is installed in the front engine compartment of a vehicle, the distance between the front engine cover and the top of the electric drive assembly 10 can be increased. Thus, when the front engine cover is impacted and deformed, it can be avoided that the front engine cover directly abuts against the electric drive assembly 10, leaving more deformation buffer space for the front engine cover. Moreover, the reduction of the installation height of the motor controller 300 can also leave a larger layout space for the high-voltage harness interface 301.

[0063] Optionally, the electric control installation part 7 may further include a plurality of mounting seats 72. A connecting part is formed on the motor controller 300, and a connecting hole is formed on the connecting part. Bolts can pass through the connecting hole and be cooperatively connected with the mounting seats 72.

[0064] Optionally, as Figure 8 shown, the housing body includes a first half housing 4 and a second half housing 5. The first half housing 4 and the second half housing 5 can be connected to each other and jointly define a first accommodation cavity. The second recessed part 71 is provided on the outer surface of the first half housing 4. Since the second recessed part 71 is provided on the outer surface of the first half housing 4, it can be prevented that the connection part between the first half housing 4 and the second half housing 5 is located within the second recessed part 71, thus affecting and interfering with the installation of the motor controller 300 and causing the installation height of the motor controller 300 to be raised due to avoiding the connection part between the first half housing 4 and the second half housing 5. The arrangement of the second recessed part 71 on the outer surface of the first half housing 4 is beneficial to reducing the installation height of the motor controller 300 and improving the structural compactness and integration degree of the electric drive assembly 10.

[0065] Optionally, the first accommodation cavity includes a motor accommodation cavity for accommodating the motor assembly 400 and a reduction accommodation cavity for accommodating the reducer assembly 500. The motor accommodation cavity and the reduction accommodation cavity are in communication with each other. The first half housing 4 includes a first part 41 and a second part 42. The motor accommodation cavity is located within the first part 41. The second part 42 is connected to the second half housing 5 and jointly defines the reduction accommodation cavity. In this embodiment, the motor assembly 400 and the reducer assembly 500 share the same housing body, which helps to improve the structural compactness of the electric drive assembly 10.

[0066] As Figure 8As shown, the second part 42 has a protruding portion 421 that protrudes from the first part 41. The outer surface of the protruding portion 421 and the outer surface of the first part 41 form a second recess 71. Since the first accommodation cavity includes a motor accommodation cavity and a reduction accommodation cavity that communicate with each other, and the motor accommodation cavity is located in the first part 41 of the first half shell 4, the first half shell 4 further includes a second part 42, and a part of the reduction accommodation cavity is formed in the second part 42. Thus, the protruding portion 421 is located at one end of the motor controller 300, so that the first half shell 4 has sufficient dimensions in the X direction and the Y direction to accommodate the motor controller 300. Moreover, on the one hand, the protruding portion 421 can be used to cooperate with the second half shell 5 to connect the first half shell 4 and the second half shell 5, and on the other hand, it can also protect the high-voltage wire harness interface 301 of the motor controller 300.

[0067] Optionally, as Figure 8 shown, the second recess 71 and at least part of the first accommodation cavity are arranged along the Z direction, and the differential mounting portion and the first accommodation cavity are arranged along the X direction, and the Z direction is perpendicular to the X direction. The second recess 71 and at least part of the first accommodation cavity are arranged along the Z direction, so that the space of the electric drive assembly housing 100 in the Z direction can be utilized to arrange the motor controller 300 and its high-voltage wire harness interface 301. The differential mounting portion and the first accommodation cavity are arranged along the X direction, which can enable the differential structure 600 to be adjacent to the reduction gear assembly 500 in the first accommodation cavity, so as to facilitate the transmission connection between the differential structure 600 and the reduction gear assembly 500 in the first accommodation cavity, and can also facilitate the transmission connection between the differential structure 600 and the wheels. The differential mounting portion and the second recess 71 are located at different positions of the first accommodation cavity, realizing the reasonable arrangement of the differential structure 600 and the motor controller 300 by using different positions of the electric drive assembly housing 100.

[0068] In order to further improve the integration degree of the electric drive assembly 10, the housing body may further have a decoupling mounting portion for mounting the decoupling mechanism 200. As Figure 10 and Figure 11 shown, for an electric vehicle with four-wheel drive function, it usually includes at least one drive motor. When the power demand is high, the drive motor and another power source work simultaneously. When the power demand decreases, only one power source can be used, and the transmission connection between the output end of the drive motor and the wheels is disconnected through the decoupling mechanism 200, thereby reducing losses. By providing a decoupling mounting portion on the housing body and mounting the decoupling mechanism 200 on the housing body, the decoupling mechanism 200 can be integrated on the housing body, further reducing the volume of the electric drive assembly 10.

[0069] In order to reasonably arrange the decoupling mechanism 200, optionally, as Figure 1As shown, the decoupling mounting portion includes a first recess 14 provided on the outer surface of the housing body. The first recess 14 is used to accommodate the decoupling mechanism 200. The decoupling mounting portion further includes a decoupling connection portion 9 provided on the outer surface of the housing body. The decoupling connection portion 9 is located within the first recess 14 and is used to connect the decoupling mechanism 200. By providing the decoupling connection portion 9 on the outer surface of the housing body and arranging the decoupling connection portion 9 within the first recess 14, while integrating the decoupling mechanism 200 onto the housing body, the first recess 14 can be utilized to accommodate the decoupling mechanism 200, preventing the volume of the electric drive assembly 10 from increasing due to the integration of the decoupling mechanism 200, enabling the electric drive assembly 10 to form a highly integrated and compact whole, and thus avoiding the electric drive assembly 10 occupying excessive space in the vehicle.

[0070] Optionally, the decoupling mounting portion may further include a plurality of bolt holes. The decoupling mechanism 200 may be provided with connection holes for bolts to pass through. The bolts can pass through the connection holes and be connected to the bolt holes.

[0071] To make full use of the shape of the housing body to arrange the differential structure 600, the motor assembly 400, the reduction assembly, and the decoupling mechanism 200, optionally, as Figure 1 shown, the first recess 14 and the differential mounting portion are arranged along the Y direction, and the first recess 14 and the differential mounting portion and the first accommodation cavity are arranged along the X direction, where the X direction is perpendicular to the Y direction. Since after the motor assembly 400 passes through the reducer, it is transmission-connected to the vehicle's half shafts through the differential structure 600, and the half shafts are respectively connected to opposite ends of the differential structure 600 along the Y direction. The decoupling mechanism 200 is arranged on one side of the differential structure 600 and is disposed between the differential structure 600 and the vehicle's half shafts. Arranging the first recess 14 and the differential mounting portion along the Y direction is beneficial for arranging the differential structure 600 and the decoupling mechanism 200 along the Y direction.

[0072] The motor assembly 400 and the reducer assembly 500 are arranged within the first accommodation cavity. Since the motor assembly 400 has a certain dimension in the Y direction and the reducer assembly 500 has a certain dimension in the X direction, the housing body can form a shape matching them according to the arrangement positions of the motor assembly 400 and the reducer assembly 500, that is, enclosing to form the first recess 14. And the first recess 14 and the differential mounting portion and the first accommodation cavity are arranged along the X direction, and the first recess 14 formed by enclosing the housing body can be utilized to accommodate the decoupling mechanism 200, thereby making the structure of the electric drive assembly 10 more compact.

[0073] Optionally, a first shaft hole 43 is formed on the first half shell 4, and a second shaft hole 51 is formed on the second half shell 5. The first bearing groove 121 is located within the first shaft hole 43, and the second bearing groove 122 is located within the second shaft hole 51. The first shaft hole 43 is for the transmission shaft of the decoupling mechanism 200 to pass through and connect to one end of the differential 2 or the differential lock 3, and the second shaft hole 51 is for the half shaft of the vehicle to pass through and connect to the other end of the differential 2 or the differential lock 3.

[0074] As a second aspect of the present disclosure, the present disclosure provides an electric drive assembly 10, including a motor assembly 400, a speed reducer assembly 500, a differential structure 600, and the above-mentioned electric drive assembly housing 100. The motor assembly 400 and the speed reducer assembly 500 are both installed in the first accommodation cavity, and the differential structure 600 is installed in the differential installation part.

[0075] Optionally, the differential structure 600 is a differential 2 or a differential lock 3. For different vehicle models, by using the same electric drive assembly housing 100, the installation of different types of differential structures 600 can be realized, thereby further reducing the manufacturing and production costs of the vehicle.

[0076] Optionally, the differential installation part includes a second accommodation cavity 11 formed inside the housing body. The second accommodation cavity 11 communicates with the first accommodation cavity. The differential lock 3 is accommodated in the second accommodation cavity 11. A through hole 8 communicating with the second accommodation cavity 11 is formed on the housing body. The wire harness 31 of the differential lock 3 passes through the through hole 8, and a sealing structure 13 is provided between the through hole 8 and the wire harness 31. The through hole 8 can be formed by penetrating the above-mentioned through hole positioning part 6.

[0077] Optionally, the electric drive assembly 10 further includes a decoupling mechanism 200. The housing body has a decoupling installation part, and the decoupling mechanism 200 is installed in the decoupling installation part.

[0078] Optionally, the drive assembly further includes a motor controller 300. An electric control installation part 7 is provided on the housing body, and the motor controller 300 is installed in the electric control installation part 7.

[0079] As a third aspect of the present disclosure, the present disclosure provides a vehicle, including the above-mentioned electric drive assembly 10. It can be understood that in the present disclosure, the vehicle can be a pure electric vehicle or a hybrid vehicle, and the present disclosure does not limit this.

[0080] The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0081] In addition, it should be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the present disclosure will not separately describe various possible combination methods.

[0082] In addition, any combination can be made between various different embodiments of the present disclosure, as long as it does not violate the idea of the present disclosure, and it should also be regarded as the content disclosed by the present disclosure.

Claims

1. An electric drive assembly housing, characterized in that: The housing comprises a shell body, wherein the shell body has a first accommodating cavity for accommodating a motor assembly and a reducer assembly; The shell body comprises a first half shell and a second half shell, wherein the first half shell and the second half shell can be connected to each other and jointly define the first accommodating cavity; The shell body also has a differential mounting portion, and the differential mounting portion is used to mount a differential structure.

2. The electric drive assembly housing according to claim 1, characterized in that: The differential structure is a differential or a differential lock, and the differential mounting portion is configured to be adaptably connected to both the differential and the differential lock.

3. The electric drive assembly housing according to claim 2, characterized in that: The differential mounting portion includes a first bearing groove and a second bearing groove, wherein the first bearing groove is used to accommodate a first bearing on the differential or a first bearing on the differential lock, and the second bearing groove is used to accommodate a second bearing on the differential or a second bearing on the differential lock.

4. The electric drive assembly housing according to claim 3, characterized in that: The first bearing groove is arranged on the first half shell, and the second bearing groove is arranged on the second half shell.

5. The electric drive assembly housing according to claim 1, characterized in that: The shell body has a second accommodating cavity inside, the second accommodating cavity is communicated with the first accommodating cavity, and the second accommodating cavity is used to accommodate the differential structure.

6. The electric drive assembly housing according to claim 5, characterized in that: The differential structure is a differential or a differential lock, and a through-hole positioning portion is provided on the shell body. The projection of the through-hole positioning portion along its axial direction can be located in the second accommodating cavity, and the through-hole positioning portion can be penetrated to form a through-hole for the wiring harness of the differential lock to pass through.

7. The electric drive assembly housing according to claim 6, characterized in that: The via hole positioning portion is a blind hole.

8. The electric drive assembly housing according to claim 6, characterized in that: The shell body is provided with an electric control installation part, the electric control installation part is used to install a motor controller, and the through hole positioning part is arranged close to the electric control installation part.

9. The electric drive assembly housing according to any one of claims 1 to 8, characterized in that: The shell body has a decoupling mounting portion, and the decoupling mounting portion is used to install a decoupling mechanism.

10. The electric drive assembly housing according to claim 9, characterized in that: The decoupling mounting portion includes a first recessed portion arranged on the outer surface of the shell body, the first recessed portion is used to accommodate the decoupling mechanism, and the decoupling mounting portion also includes a decoupling connecting portion arranged on the outer surface of the shell body, the decoupling connecting portion is located in the first recessed portion and is used to connect the decoupling mechanism.

11. The electric drive assembly housing according to claim 10, characterized in that: The first recessed portion and the differential mounting portion are arranged along the Y direction, and the first recessed portion, the differential mounting portion and the first accommodating cavity are arranged along the X direction, and the X direction is perpendicular to the Y direction.

12. The electric drive assembly housing according to any one of claims 1 to 8, characterized in that: The shell body is provided with an electric control installation part for installing a motor controller, and the electric control installation part includes a second recessed part arranged on the outer surface of the shell body, and the second recessed part is used to accommodate the motor controller and enable the high-voltage wiring harness interface of the motor controller to be located in the second recessed part.

13. The electric drive assembly housing according to claim 12, characterized in that: The second recessed portion is disposed on the outer surface of the first half shell.

14. The electric drive assembly housing according to claim 13, characterized in that: The first accommodating chamber includes a motor accommodating chamber for accommodating a motor assembly and a speed reducing accommodating chamber for accommodating a speed reducer assembly, the motor accommodating chamber and the speed reducing accommodating chamber are communicated with each other, the first half shell includes a first part and a second part, the motor accommodating chamber is located in the first part, and the second part is connected to the second half shell and jointly defines the speed reducing accommodating chamber; The second part has a protruding portion protruding from the first part, and the outer surface of the protruding portion and the outer surface of the first part form the second recessed portion.

15. The electric drive assembly housing according to claim 12, characterized in that: The second recessed portion and at least a portion of the first accommodating cavity are arranged along the Z direction, the differential mounting portion and the first accommodating cavity are arranged along the X direction, and the Z direction is perpendicular to the X direction.

16. An electric drive assembly, characterized in that: It comprises a motor assembly, a reducer assembly, a differential structure and an electric drive assembly housing as described in any one of claims 1 to 15, wherein the motor assembly and the reducer assembly are both installed in the first accommodating cavity, and the differential structure is installed on the differential mounting portion.

17. The electric drive assembly according to claim 16, characterized in that: The differential structure is a differential lock or a differential.

18. The electric drive assembly according to claim 17, characterized in that: The differential mounting portion includes a second accommodating cavity formed inside the shell body, the second accommodating cavity is communicated with the first accommodating cavity, the differential lock is accommodated in the second accommodating cavity, a through hole communicated with the second accommodating cavity is formed on the shell body, the wiring harness of the differential lock is passed through the through hole, and a sealing structure is provided between the through hole and the wiring harness.

19. The electric drive assembly according to claim 16, characterized in that: The electric drive assembly further includes a decoupling mechanism, the shell body has a decoupling mounting portion, and the decoupling mechanism is mounted on the decoupling mounting portion.

20. The electric drive assembly according to claim 16, characterized in that: The electric drive assembly also includes a motor controller. An electric control installation portion is provided on the shell body, and the motor controller is installed on the electric control installation portion.

21. A vehicle, characterized in that: Comprising the electric drive assembly according to any one of claims 16-20.

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