CN220527828U - Motor assembly and electric drive system - Google Patents

Abstract

The utility model discloses a motor assembly and an electric drive system, wherein the motor assembly comprises a shell, a motor module, a speed reducer module and an electric control module mounting structure; the motor module is arranged in the shell; the input shaft of the speed reducer module is connected with the motor shaft of the motor module; the electronic control module mounting structure comprises a first mounting structure arranged on the first surface of the shell and a second mounting structure arranged on the second surface of the shell; the electronic control module is selectively installed on the first installation structure to be arranged on the first surface, or the electronic control module is selectively installed on the second installation structure to be arranged on the second surface. The technical scheme of the utility model provides a motor assembly which can be suitable for different use scenes of a precursor and a rear drive.

Description

Motor assembly and electric drive system

Technical Field

The utility model relates to the technical field of driving systems, in particular to a motor assembly and an electric driving system.

Background

In an electric vehicle electric drive system, the main stream product type is a centralized electric drive system, and the requirements of the whole vehicle on dynamic property and drivability are continuously improved. The size requirements of the front drive and the rear drive electric drive systems are different, and in the related art, the installation position of an electric control module of the motor assembly is fixed and cannot be selectively installed above the motor module or at the side of the motor module, so that the motor assembly cannot be simultaneously applied to different use scenes of the front drive and the rear drive.

Disclosure of Invention

The utility model mainly aims to provide a motor assembly and an electric drive system, and aims to provide a motor assembly which can be suitable for different use scenes of a precursor drive and a rear drive.

In order to achieve the above object, the present utility model provides a motor assembly, comprising:

a housing;

the motor module is arranged in the shell;

the input shaft of the speed reducer module is connected with the motor shaft of the motor module;

the electronic control module mounting structure comprises a first mounting structure arranged on the first surface of the shell and a second mounting structure arranged on the second surface of the shell;

the electronic control module is selectively installed on the first installation structure so as to be arranged on the first surface, or the electronic control module is selectively installed on the second installation structure so as to be arranged on the second surface.

In an embodiment of the utility model, the first surface is disposed adjacent to or opposite the second surface.

In an embodiment of the utility model, the first surface and the second surface are a top surface and a side surface of the casing, respectively.

In an embodiment of the utility model, the first mounting structure includes a first bracket set and a first wiring port opened between the first bracket set; the second mounting structure comprises a second bracket group and a second wiring port arranged between the second bracket groups;

the electric control module is selectively arranged on the first bracket group, so that a connecting wire of the electric control module extends into the shell through the first wiring port to be electrically connected with the motor module; or the electric control module is selectively arranged in the second bracket group, so that a connecting wire of the electric control module extends into the shell through the second wiring port to be electrically connected with the motor module.

In an embodiment of the present utility model, the extending directions of the first bracket set and the second bracket set are perpendicular to each other or parallel to each other.

In an embodiment of the utility model, the casing comprises a cylinder and two motor end covers, the two motor end covers are respectively covered at two ends of the cylinder, the motor module is arranged in the cylinder, and the speed reducer module is arranged on the motor end covers in a penetrating way;

the first bracket group is arranged on the cylinder body and/or the two motor end covers, and the second bracket group is arranged on the cylinder body and/or the two motor end covers.

In an embodiment of the present utility model, the first bracket set and the second bracket set are both disposed on two motor end caps, and the first wiring port and the second wiring port are both disposed on the cylinder;

the opening direction of the first wiring port is the same as the extending direction of the first bracket group, and the opening direction of the second wiring port is the same as the extending direction of the second bracket group.

In an embodiment of the present utility model, the housing has a length direction, the motor module includes two motors, the two motors are arranged side by side along the length direction, and an axial direction of the motors is consistent with the length direction; the speed reducer module comprises two speed reducers, two motors are positioned between the two speed reducers, and an input shaft of each speed reducer is connected with a motor shaft of one motor.

In one embodiment of the utility model, the motor assembly further comprises an oil cooler provided to the housing to dissipate heat from the housing and/or the motor module.

The utility model also provides an electric drive system which comprises the motor assembly.

In the motor assembly and the electric drive system provided by the utility model, the first mounting structure and the second mounting structure are respectively arranged on the first surface and the second surface of the casing, so that the electric control module can be selectively mounted on the first mounting structure or the second mounting structure according to different use scenes of the front drive and the rear drive in the assembly process, for example, when the motor assembly is applied to the front drive scene, the electric control module can be mounted on the first mounting structure, and when the motor assembly is applied to the rear drive scene, the electric control module can be mounted on the second mounting structure, so that the motor assembly can be suitable for different use scenes of the front drive and the rear drive.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of an electrical control module according to an embodiment of the present utility model mounted on a first surface;

FIG. 2 is a schematic diagram of an electrical control module according to an embodiment of the present utility model when the electrical control module is mounted on a second surface;

FIG. 3 is an exploded view of one embodiment of the motor assembly of the present utility model;

fig. 4 is a schematic view of a portion of a motor assembly according to an embodiment of the present utility model.

Reference numerals illustrate:

reference numerals	Name of the name	Reference numerals	Name of the name
				100	Motor assembly	31	Speed reducer
10	Casing of machine	40	Electric control module
				11	Barrel body	50	Oil cooler
111	A first surface	60	Electric control module mounting structure
				112	A second surface	61	First mounting structure
11a1	Cover body	611	First bracket group
				12	Motor end cover	612	First wiring port
13	End cover of speed reducer	62	Second mounting structure
				131	Avoidance port	621	Second bracket set
20	Motor module	622	Second wiring port
				21	Motor with a motor housing	a	In the length direction
30	Speed reducer module

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The utility model provides a motor assembly 100 and an electric drive system, and aims to provide a motor assembly 100 which can be suitable for different use scenes of a front drive and a rear drive.

The specific structure of the motor assembly 100 and the electric drive system of the present utility model will be described below:

referring to fig. 1 to 4 in combination, in an embodiment of the motor assembly 100 of the present utility model, the motor assembly 100 includes a housing 10, a motor module 20, a decelerator module 30, and an electronic control module mounting structure 60; the motor module 20 is arranged in the shell 10; the input shaft of the speed reducer module 30 is connected with the motor shaft of the motor module 20; the electronic control module mounting structure 60 comprises a first mounting structure 61 arranged on a first surface 111 of the casing 10 and a second mounting structure 62 arranged on a second surface 112 of the casing 10, and the electronic control module mounting structure 60 is used for mounting the electronic control module 40; wherein the electronic control module 40 is selectively mounted to the first mounting structure 61 or the second mounting structure 62.

It can be appreciated that in the motor assembly 100 according to the present utility model, the first mounting structure 61 and the second mounting structure 62 are respectively disposed on the first surface 111 and the second surface 112 of the casing 10, so that, during the assembly process, the electronic control module 40 can be selectively mounted on the first mounting structure 61 or the second mounting structure 62 according to different usage situations of the front drive and the rear drive, for example, when the motor assembly 100 is applied in the front drive situation, the electronic control module 40 can be mounted on the first mounting structure 61 so that the electronic control module 40 is disposed on the first surface 111, and when the motor assembly 100 is applied in the rear drive situation, the electronic control module 40 can be mounted on the second mounting structure 62 so that the electronic control module 40 is disposed on the second surface so that the motor assembly 100 can be adapted to different usage situations of the front drive and the rear drive situation.

In the practical application process, the first surface 111 and the second surface 112 of the casing 10 may be two surfaces that are oppositely disposed, or may be two surfaces that are adjacently disposed. In some embodiments, when the first surface 111 and the second surface 112 are two surfaces that are disposed opposite to each other, the first mounting structure 61 and the second mounting structure 62 may be disposed opposite to each other, or may be disposed in a staggered manner, which may be specific according to actual use situations, and is not limited herein. In other embodiments, when the first surface 111 and the second surface 112 are two surfaces disposed adjacently, the first surface 111 and the second surface 112 may be a top surface and a side surface of the casing 10, a bottom surface and a side surface of the casing 10, or two side surfaces of the casing 10, respectively.

Further, referring to fig. 1-4 in combination, in one embodiment of the motor assembly 100 of the present utility model, the first surface 111 and the second surface 112 are an upper top surface and a side surface adjacent to the upper top surface, respectively.

So set up, in the assembly process, can be according to the different application scenario of forerunner and postdriver with the flexible installation of electronic control module 40 on the top surface or the side of casing 10, the installation of the electronic control module 40 of being convenient for simultaneously to through the flexible arrangement of electronic control module 40 position, not only can use same section motor assembly 100 to be applicable to the different application scenario of whole forerunner and postdriver, can also adjust motor assembly 100's X to and Z to the size, in order to promote motor assembly 100's equipment flexibility.

Further, referring to fig. 1 to 4 in combination, in an embodiment of the motor assembly 100 of the present utility model, the first mounting structure 61 includes a first bracket group 611 and a first wiring port 612 disposed between the first bracket group 611; the second mounting structure 62 includes a second bracket set 621 and a second connection port 622 disposed between the second bracket sets 621; wherein, the electronic control module 40 is selectively mounted on the first bracket group 611, so that the connecting wire of the electronic control module 40 extends into the casing 10 through the first wiring port 612 to be electrically connected with the motor module 20; or the electronic control module 40 is selectively mounted to the second bracket set 621 such that the connection wire of the electronic control module 40 extends into the casing 10 through the second connection port 622 to be electrically connected with the motor module 20.

In this way, during the assembly process, the electronic control module 40 can be selectively installed on the first bracket group 611 or the second bracket group 621, so that the electronic control module 40 can be fixed through the corresponding first bracket group 611 or second bracket group 621, so as to ensure the installation stability of the electronic control module 40, i.e. the electronic control module 40 can be installed above the motor module 20 or beside the motor module 20 according to different usage scenarios of the precursor and the rear drive, so that the motor assembly 100 is suitable for different usage scenarios of the precursor and the rear drive; when the electronic control module 40 is mounted on the first bracket group 611, the connection wire of the electronic control module 40 can extend into the casing 10 through the first wiring port 612, so as to be electrically connected with the motor module 20 smoothly; when the electronic control module 40 is mounted on the second bracket set 621, the connection wire of the electronic control module 40 can extend into the casing 10 through the second connection port 622, so as to be electrically connected with the motor module 20 smoothly.

For example, the electronic control module 40 may be connected to the first bracket set 611 or the second bracket set 621 by a screw, a buckle, or the like.

In some embodiments, the first bracket group 611 may include a plurality of first connection posts disposed around the first wiring port 612 such that the electronic control module 40 is selectively fixedly mounted on the plurality of first connection posts by a plurality of screws. Likewise, the second bracket set 621 may include a plurality of second connection posts disposed around the second connection port 622 such that the electronic control module 40 is selectively and fixedly mounted on the plurality of second connection posts by a plurality of screws.

Further, referring to fig. 1 to 4 in combination, in an embodiment of the motor assembly 100 of the present utility model, the extending directions of the first bracket group 611 and the second bracket group 621 are perpendicular to each other or parallel to each other, that is, when the first surface 111 and the second surface 112 are disposed adjacent to each other, the extending direction of the first bracket group 611 and the second bracket group 621 is perpendicular to each other, and when the first surface 111 and the second surface 112 are disposed opposite to each other, the extending direction of the first bracket group 611 and the second bracket group 621 is parallel to each other. By such arrangement, the motor assembly 100 can be suitable for different use situations of the front drive and the rear drive, and the electric control module 40 can be conveniently installed.

Further, referring to fig. 1-4 in combination, in one embodiment of the motor assembly 100 of the present utility model, the first connection port 612 and the second connection port 622 are adjacent to each other.

So configured, when the electronic control module 40 is mounted on the first surface 111, the connection wire of the electronic control module 40 may first pass through the first connection port 612 on the first surface 111, and fix the electronic control module 40 on the first bracket group 611, after that, since the first connection port 612 on the first surface 111 and the second connection port 622 on the second surface 112 are close to each other, the operator may use the second connection port 622 on the second surface 112 as an operation port to electrically connect the connection wire of the electronic control module 40 with the motor module 20 through the second connection port 622 on the second surface 112; similarly, when the electronic control module 40 is mounted on the second surface 112, the connection wire of the electronic control module 40 may first pass through the second connection hole 622 on the second surface 112, and the electronic control module 40 is fixed on the second bracket set 621, after which, since the first connection hole 612 on the first surface 111 and the second connection hole 622 on the second surface 112 are close to each other, the operator may use the first connection hole 612 on the first surface 111 as an operation hole to electrically connect the connection wire of the electronic control module 40 with the motor module 20 through the first connection hole 612 on the first surface 111.

In this embodiment, the UVW three-phase line, low voltage sensor on the electronic control module 40 may be connected to the motor module 20 by a wire harness.

In some embodiments, when the electronic control module 40 is mounted on the first surface 111, after the mounting is completed, the cover 11a1 may be used to cover the second wiring port 612 on the second surface 112 as an operation port, so as to prevent impurities such as external dust from entering the interior of the casing 10 through the second wiring port 622, thereby affecting the normal use of the internal structure of the casing 10; also, when the electronic control module 40 is mounted on the second surface 112, the cover 11a1 may be used to cover the first wiring opening 612 on the first surface 111 as an operation opening after the mounting is completed, so as to prevent foreign matters such as external dust from entering the interior of the casing 10 through the first wiring opening 612, thereby affecting the normal use of the internal structure of the casing 10.

Further, referring to fig. 1-4 in combination, in one embodiment of the motor assembly 100 of the present utility model, the housing 10 includes a barrel 11 and two motor end caps 12; the two motor end covers 12 are respectively covered at two ends of the cylinder 11, the motor module 20 is arranged in the cylinder 11, and the speed reducer module 30 is arranged on the motor end covers 12 in a penetrating way; the first bracket group 611 is disposed on the cylinder 11 and/or the two motor end covers 12, and the second bracket group 621 is disposed on the cylinder 11 and/or the two motor end covers 12.

So arranged, during the assembly process, the motor module 20 can be firstly installed in the cylinder 11, then the two motor end covers 12 are respectively covered at the two ends of the cylinder 11, then the speed reducer module 30 is arranged on the motor end covers 12 in a penetrating way so as to be fixed on the motor end covers 12, and the input shaft of the speed reducer module 30 is connected with the motor shaft of the motor module 20; in addition, the first bracket group 611 may be specifically disposed on the cylinder 11 or on the two motor end caps 12, and the second bracket group 621 may also be disposed on the cylinder 11 or on the two motor end caps 12, so as to implement flexible installation of the electronic control module 40.

In some embodiments, the casing 10 may further include two end caps 13, where each end cap 13 covers an end of the motor end cap 12 that is far away from the cylinder 11, so that the motor module 20 and the reducer module 30 may be installed in the casing 10, so as to protect the motor module 20 and the reducer module 30.

In this embodiment, in order to facilitate connection between the output shaft of the speed reducer module 30 and the driving wheel of the whole vehicle, an avoidance port 131 may be formed on the speed reducer end cover 13, so that the output shaft of the speed reducer module 30 is connected with the driving wheel of the whole vehicle through the avoidance port 131.

Illustratively, the motor end cover 12 and the cylinder 11 may be connected by a screw, a buckle, or the like; the reducer end cover 13 and the motor end cover 12 may be connected by screws, buckles, or the like.

Further, referring to fig. 1 to 4 in combination, in an embodiment of the motor assembly 100 of the present utility model, the first bracket set 611 and the second bracket set 621 are disposed on the two motor end caps 12, and the first connection port 612 and the second connection port 622 are disposed on the cylinder 11; wherein, the opening of the first wiring port 612 faces the same direction as the extending direction of the first bracket group 611, and the opening of the second wiring port 622 faces the same direction as the extending direction of the second bracket group 621.

So arranged, when the electronic control module 40 needs to be mounted on the first surface 111 in the assembly process, firstly, the connecting wire of the electronic control module 40 extends into the casing 10 through the first wiring port 612, then the electronic control module 40 is fixedly mounted on the first bracket group 611, and since the extending direction of the first bracket group 611 is the same as the extending direction of the first wiring port 612, the first wiring port 612 can be covered by the electronic control module 40, so that impurities such as external dust can be prevented from entering the casing 10 through the first wiring port 612, and the structure inside the casing 10 is influenced; and, when the electronic control module 40 needs to be installed on the second surface 112, firstly, the connecting wire of the electronic control module 40 extends into the casing 10 through the second connection port 622, then the electronic control module 40 is fixedly installed on the second bracket set 621, and since the extending direction of the second bracket set 621 is the same as the direction of the second connection port 622, the second connection port 622 can be covered by the electronic control module 40, so as to prevent impurities such as external dust from entering the casing 10 through the second connection port 622, and influence on the structure inside the casing 10.

Further, referring to fig. 1 to 4 in combination, in an embodiment of the motor assembly 100 of the present utility model, the housing 10 has a length direction a, the motor module 20 includes two motors 21, the two motors 21 are disposed side by side along the length direction a, and an axial direction of the motors 21 coincides with the length direction a; the speed reducer module 30 includes two speed reducers 31, and two motors 21 are located between the two speed reducers 31, and an input shaft of each speed reducer 31 is connected with a motor shaft of one motor 21.

So arranged, by arranging two motors 21 side by side along the length direction a of the casing 10, the compactness of the structure can be improved to reduce the overall size of the assembly structure 100; in addition, by locating the two motors 21 between the two reducers 31, not only is the installation of the reducers 31 facilitated, so that the input shaft of each reducer 31 is conveniently connected with the motor shaft of one motor 21, but also the output shaft of each reducer 31 is conveniently connected with one driving wheel of the whole vehicle; and the whole structure can be more compact, so that the aim of further reducing the whole axial dimension is fulfilled.

In some embodiments, the outer diameter of the motor 21 may be greater than 210mm, so, by adopting two large outer diameter motors 21 with outer diameters greater than 210mm, the motor 21 with large outer diameter may achieve higher output capacity with smaller axial dimensions than the motor 21 with small outer diameter less than 210mm, so that the axial dimensions of the motor 21 may be greatly shortened, the overall axial dimensions of the assembly structure 100 may be reduced, and the assembly structure 100 may be adapted to the chassis dimension requirements of most vehicle models, so that the assembly structure 100 may be installed without redesigning the chassis, thereby reducing development investment costs.

In addition, since the conventional distributed motor assembly is a simple combination of two centralized electric driving systems, the two motors 21 are respectively installed in the corresponding housings 10, and the design of the two housings 10 not only results in an excessively large axial dimension of the overall structure, but also increases the manufacturing cost; in this scheme, the two motors 21 are both installed in the same casing 10, that is, the two motors 21 share the casing 10, so that the axial dimension of the whole structure can be effectively reduced, and only one casing 10 needs to be prepared, so that the preparation cost can be reduced.

In the present embodiment, during the assembly process, two motors 21 are first installed in the housing 10 along the length direction a of the housing 10, then the input shafts of the two reducers 31 are respectively connected with the motor shafts of the two motors 21, and then the connection wires on the electronic control module 40 are connected with the interfaces on the motors 21, so that the operation of the motors 21 can be controlled by the electronic control module 40; in addition, during the use process, the output shafts of the two reducers 31 may be respectively connected with two driving wheels of the whole vehicle to respectively drive the two driving wheels to rotate, and it should be noted that the two driving wheels proposed herein may be two front driving wheels or two rear driving wheels of the whole vehicle.

In the practical application process, the outer diameters of the two motors 21 may be identical or not, which is specific to the practical use situation. In some embodiments, the outer diameter of the motor 21 may specifically be 240mm, 270mm, etc.

For example, the motor 21 may be an axial flux motor 21, so that the output torque can be improved while considering the axial dimension, and the motor is suitable for application situations where high rotation speed and high torque are simultaneously required.

In the practical application process, the speed reducer 31 may be installed inside the casing 10, or may be installed outside the casing 10. In one embodiment, when the speed reducer 31 is installed in the casing 10, it is necessary to provide a relief port 131 on the casing 10, so that the output shaft of the speed reducer 31 is smoothly connected to the driving wheel through the relief port 131. In another embodiment, when the speed reducer 31 is mounted outside the casing 10, it is also necessary to provide a relief port 131 on the casing 10, so that the motor shaft of the motor 21 is smoothly connected to the input shaft of the speed reducer 31 through the relief port 131.

Further, referring to fig. 3 in combination, in an embodiment of the motor assembly 100 of the present utility model, the speed reducer 31 is a single-stage speed reducer 31.

Because the traditional distributed motor assembly adopts a two-stage reducer, and the two-stage reducer needs to use two groups of gears, the axial size of the encoder can be increased, and the overall axial size of the motor assembly 100 can be increased; the mode of matching the large outer diameter with the single-stage reducer 31 is adopted, so that the axial size of the motor 21 can be reduced, the axial size of the reducer 31 can be reduced, and the overall axial size of the motor assembly 100 can be greatly reduced on the premise of ensuring the performance.

By way of example, the speed reducer 31 may be a single stage planetary speed reducer 31. The sun gear of the speed reducer 31 is connected with a motor shaft of the motor 21, the gear ring of the speed reducer 31 is connected with a motor end cover 12 of the casing 10, and the planet carrier of the speed reducer 31 is connected with a half shaft of the whole vehicle and is used for outputting power to the whole vehicle. Here, the sun gear referred to herein is an input shaft of the speed reducer 31.

Further, referring to fig. 1 to 4 in combination, in an embodiment of the motor assembly 100 of the present utility model, the motor assembly 100 further includes an oil cooler 50, and the oil cooler 50 is disposed on the casing 10 to dissipate heat of the casing 10 and/or the motor module 20, so as to prolong the service life of the motor module 20.

The utility model also provides an electric drive system, which comprises the motor assembly 100, wherein the specific structure of the motor assembly 100 refers to the embodiment, and the electric drive system at least has all the beneficial effects brought by the technical schemes of the embodiment because the electric drive system adopts all the technical schemes of all the embodiments, and the detailed description is omitted.

In this embodiment, the electric drive system may be an electric vehicle electric drive system, or may be any drive system having a motor assembly 100, including but not limited to the following categories: fans, ships, airplanes, etc., which are not particularly limited in this embodiment.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims (10)

1. An electric motor assembly, comprising:

a housing;

the motor module is arranged in the shell;

the input shaft of the speed reducer module is connected with the motor shaft of the motor module;

the electronic control module mounting structure comprises a first mounting structure arranged on the first surface of the shell and a second mounting structure arranged on the second surface of the shell;

the electronic control module is selectively installed on the first installation structure so as to be arranged on the first surface, or the electronic control module is selectively installed on the second installation structure so as to be arranged on the second surface.

2. The motor assembly of claim 1, wherein the first surface is disposed adjacent to or opposite the second surface.

3. The motor assembly of claim 2, wherein the first surface and the second surface are a top surface and a side surface of the housing, respectively.

4. The motor assembly of claim 1, wherein the first mounting structure comprises a first bracket set and a first connection opening formed between the first bracket set; the second mounting structure comprises a second bracket group and a second wiring port arranged between the second bracket groups;

the electric control module is selectively arranged on the first bracket group, so that a connecting wire of the electric control module extends into the shell through the first wiring port to be electrically connected with the motor module; or the electric control module is selectively arranged in the second bracket group, so that a connecting wire of the electric control module extends into the shell through the second wiring port to be electrically connected with the motor module.

5. The motor assembly of claim 4, wherein the directions of extension of the first bracket set and the second bracket set are perpendicular to each other or parallel to each other.

6. The motor assembly of claim 4, wherein the housing comprises a barrel and two motor end caps, the two motor end caps are respectively covered at two ends of the barrel, the motor module is arranged in the barrel, and the reducer module is arranged on the motor end caps in a penetrating way;

the first bracket group is arranged on the cylinder body and/or the two motor end covers, and the second bracket group is arranged on the cylinder body and/or the two motor end covers.

7. The motor assembly of claim 6, wherein the first bracket set and the second bracket set are both disposed on two of the motor end caps, and the first wire connection port and the second wire connection port are disposed on the cylinder;

the opening direction of the first wiring port is the same as the extending direction of the first bracket group, and the opening direction of the second wiring port is the same as the extending direction of the second bracket group.

8. The motor assembly of claim 1, wherein said housing has a length direction, said motor module including two motors, two of said motors being disposed side-by-side along said length direction, an axial direction of said motors being coincident with said length direction; the speed reducer module comprises two speed reducers, two motors are positioned between the two speed reducers, and an input shaft of each speed reducer is connected with a motor shaft of one motor.

9. The motor assembly of claim 1, further comprising an oil cooler disposed in the housing to dissipate heat from the housing and/or the motor module.

10. An electric drive system comprising a motor assembly as claimed in any one of claims 1 to 9.