CN211684624U

CN211684624U - Power assembly and electric vehicle with same

Info

Publication number: CN211684624U
Application number: CN202020135688.5U
Authority: CN
Inventors: 南云超; 苏正杲; 王炳一
Original assignee: Beijing Electric Vehicle Co Ltd
Current assignee: Beijing Electric Vehicle Co Ltd
Priority date: 2020-01-20
Filing date: 2020-01-20
Publication date: 2020-10-16
Anticipated expiration: 2030-01-20

Abstract

The utility model discloses a power assembly and have its electric vehicle, power assembly includes: the motor comprises a motor shell, the speed reducer comprises a speed reducer shell, and the motor shell is detachably connected with the speed reducer shell; the first end cover is arranged at one end of the motor shell, and the second end cover is arranged at one end of the speed reducer shell; and the third end cover is arranged between the other end of the motor shell and the other end of the speed reducer shell. Therefore, by arranging the third end cover, on one hand, one motor end cover or one speed reducer end cover can be omitted, the material consumption of the whole power assembly is lower, and the cost can be effectively reduced; on the other hand, the speed reducer and the motor are in relatively independent states, so that the matching performance and the universality of the power assembly can be improved.

Description

Power assembly and electric vehicle with same

Technical Field

The utility model belongs to the technical field of the vehicle technique and specifically relates to an electric vehicle who relates to a power assembly and have it.

Background

In the related art, with the development of the electric vehicle industry, the high integration and low-cost design of the power assembly is always the pursuit target of various new energy vehicle enterprises.

However, the motor and the reducer of the existing integrated power assembly are integrated in a shell, so that the assembly and disassembly difficulty is high, and the platform is difficult; or the motor and the reducer are respectively assembled in the motor shell and the reducer shell and then are integrally assembled into a power assembly, and although the matching performance between the motor and the reducer is higher, the cost is higher.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the present invention is to provide a power assembly, which has higher matching performance and lower production cost.

The utility model discloses a vehicle is further provided, the vehicle adopts above-mentioned power assembly.

According to the utility model discloses a power assembly for electric vehicle of first aspect embodiment includes: the motor comprises a motor shell, the speed reducer comprises a speed reducer shell, and the motor shell is detachably connected with the speed reducer shell; the first end cover is arranged at one end of the motor shell, and the second end cover is arranged at one end of the speed reducer shell; and the third end cover is arranged between the other end of the motor shell and the other end of the speed reducer shell.

According to the power assembly provided by the embodiment of the utility model, by arranging the third end cover, on one hand, one motor end cover or one reducer end cover can be eliminated, the material consumption of the whole power assembly is lower, and the cost can be effectively reduced; on the other hand, the speed reducer and the motor are in relatively independent states, so that the matching performance and the universality of the power assembly can be improved.

According to some embodiments of the invention, the motor further comprises: the stator, the rotor and the motor shaft are arranged in the motor shell; the speed reducer includes: a speed reducer assembly disposed within the speed reducer housing, the speed reducer assembly comprising: an input shaft; the motor shaft passes through the third end cap to be in powered connection with the input shaft or the input shaft passes through the third end cap to be in powered connection with the motor shaft.

In some embodiments, the third end cover is integrally formed with the motor case or the third end cover is integrally formed with the speed reducer case.

Further, the third end cover and the speed reducer casing are integrally formed, and a fixing flange is arranged on one side, facing the motor casing, of the third end cover.

Further, one end of the motor shaft, which faces the speed reducer, is provided with a bearing, and the bearing is arranged in the fixing flange.

In some embodiments, the input shaft passes through the fixed flange to be in powered connection with the motor shaft.

Further, one of the motor shaft and the input shaft is provided with an internal spline, and the other of the motor shaft and the input shaft is provided with an external spline that is fitted with the internal spline.

Furthermore, the third end cover is provided with a plurality of reinforcing flanges surrounding the input shaft at intervals in the radial direction of the input shaft.

Further, the third end cap is further provided with a reinforcing rib in the radial direction of the input shaft, and the reinforcing rib penetrates through the plurality of reinforcing flanges to be connected with the fixing flange.

According to the utility model discloses electric vehicle of second aspect embodiment includes: the powertrain described in the above embodiments.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic view of an angle of a powertrain according to an embodiment of the present invention;

fig. 2 is a schematic view of another angle of a powertrain according to an embodiment of the present invention.

Reference numerals:

the power assembly (100) is provided with a power assembly,

a motor 10, a motor housing 11, a motor shaft 12,

the reduction gear 20, the reduction gear case 21, the input shaft 22,

a first end cap 30, a second end cap 40, a third end cap 50, a fixing flange 51, a reinforcing flange 52, a reinforcing rib 53

And a bearing 60.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

A powertrain 100 and a vehicle having the same according to an embodiment of the present invention will be described below with reference to fig. 1 to 2.

As shown in fig. 1 and 2, a power train 100 for an electric vehicle according to an embodiment of the first aspect of the present invention includes: the motor 10 comprises a motor shell 11, the speed reducer 20 comprises a speed reducer shell 21, and the motor shell 11 is detachably connected with the speed reducer shell 21; a first end cover 30 and a second end cover 40, the first end cover 30 being provided at one end of the motor case 11, the second end cover 40 being provided at one end of the speed reducer case 21; and a third end cover 50, the third end cover 50 being disposed between the other end of the motor case 11 and the other end of the reducer case 21.

Specifically, the reducer 20 and the motor 10 of the present embodiment are still in a split structure, the second end cover 40 is disposed at one end of the reducer case 21, the first end cover 30 is disposed at one end of the motor case 11, the other end of the motor case 11 is disposed opposite to the other end of the reducer case 21, and the third end cover 50 is disposed therebetween.

It can be understood that the speed reducer 20 and the motor 10 are still in a relatively independent state, multiple schemes can be selected according to use requirements for matching of different motors 10 and speed reducers 20, and the schemes are carried on different platform vehicle types, so that the power assembly 100 has high universality, the number of end covers of the power assembly 100 is reduced, and the production cost can be reduced.

According to the power assembly 100 of the embodiment of the present invention, by providing the third end cover 50, on one hand, an end cover of the motor 10 or an end cover of the reducer 20 can be eliminated, the material consumption of the whole power assembly 100 is lower, and the cost can be effectively reduced; on the other hand, the reduction gear 20 and the motor 10 are relatively independent from each other, so that the compatibility and versatility of the powertrain 100 can be improved.

According to some embodiments of the present invention, the motor 10 further comprises: a stator, a rotor and a motor shaft 12 provided in the motor case 11; the speed reducer 20 includes: a speed reducer 20 assembly disposed within a speed reducer housing 21, the speed reducer 20 assembly comprising: an input shaft 22; the motor shaft 12 passes through the third end cap 50 to be in power connection with the input shaft 22 or the input shaft 22 passes through the third end cap 50 to be in power connection with the motor shaft 12.

In other words, in some embodiments, the motor shaft 12 passes through the third end cap 50 to be in powered connection with the input shaft 22; in other embodiments, the input shaft 22 passes through the third end cap 50 to be in powered connection with the motor shaft 12.

It is understood that the third end cover 50 is integrally formed with the motor case 11 or the third end cover 50 is integrally formed with the reducer case 21. That is, in some embodiments, the third end cap 50 is integrally formed with the reducer case 21; in other embodiments, the third end cap 50 is integrally formed with the motor housing 11. Thus, not only is the processing of the third end cap 50 facilitated, but also the assembling efficiency can be improved.

In the specific embodiment shown in fig. 2, the third end cover 50 is integrally formed with the reducer case 21, a fixing flange 51 is provided on a side of the third end cover 50 facing the motor case 11, a bearing 60 is provided on an end of the motor shaft 12 facing the reducer 20, and the bearing 60 is provided in the fixing flange 51.

That is, the third cover 50 is provided with the bearing 60 mounting position, the bearing 60 mounting position is formed as the fixing flange 51, and the fixing flange 51 is fixed to the outer ring of the bearing 60, so that the fixing stability of the bearing 60 can be improved, the coaxiality between the motor shaft 12 and the input shaft 22 can be increased, and the power transmission between the motor 10 and the reducer 20 can be more stable and reliable.

In some embodiments, the input shaft 22 passes through the fixed flange 51 to be in powered connection with the motor shaft 12.

Further, one of the motor shaft 12 and the input shaft 22 is provided with an internal spline, and the other of the motor shaft 12 and the input shaft 22 is provided with an external spline that is fitted with the internal spline. Therefore, the power transmission between the motor shaft 12 and the input shaft 22 is more stable and reliable, and the working stability of the power assembly 100 is improved.

Further, the third end cover 50 is further provided with a plurality of reinforcing flanges 52 surrounding the input shaft 22 at intervals in the radial direction of the input shaft 22, the third end cover 50 is further provided with reinforcing ribs 53 in the radial direction of the input shaft 22, and the reinforcing ribs 53 penetrate through the plurality of reinforcing flanges 52 to be connected to the fixing flange 51. Thus, the third end cover 50 has higher structural strength, and better stress effects in the axial direction and the radial direction, and the structural strength of the powertrain 100 can be further improved.

According to the utility model discloses electric vehicle of second aspect embodiment includes: the powertrain 100 in the above embodiment.

According to the utility model discloses electric vehicle adopts above-mentioned power assembly 100, and the technological effect that has is unanimous with above-mentioned power assembly 100, no longer gives unnecessary details here.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features.

In the description of the present invention, "a plurality" means two or more.

In the description of the present invention, the first feature "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features being in contact with each other not directly but through another feature therebetween.

In the description of the invention, the first feature being "on", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A powertrain (100) for an electric vehicle, comprising:

the motor comprises a motor (10) and a speed reducer (20), wherein the motor (10) comprises a motor shell (11), the speed reducer (20) comprises a speed reducer shell (21), and the motor shell (11) is detachably connected with the speed reducer shell (21);

a first end cover (30) and a second end cover (40), the first end cover (30) is arranged at one end of the motor shell (11), and the second end cover (40) is arranged at one end of the speed reducer shell (21);

a third end cover (50), the third end cover (50) being disposed between the other end of the motor case (11) and the other end of the speed reducer case (21).

2. The powertrain (100) for an electric vehicle according to claim 1, characterized in that the electric machine (10) further includes: a stator, a rotor and a motor shaft (12) arranged in the motor casing (11);

the speed reducer (20) includes: a speed reducer (20) assembly disposed within the speed reducer housing (21), the speed reducer (20) assembly comprising: an input shaft (22);

the motor shaft (12) passes through the third end cap (50) to be in powered connection with the input shaft (22) or the input shaft (22) passes through the third end cap (50) to be in powered connection with the motor shaft (12).

3. The powertrain for an electric vehicle (100) according to claim 2, characterized in that the third end cover (50) is integrally molded with the motor case (11) or the third end cover (50) is integrally molded with the speed reducer case (21).

4. The powertrain for an electric vehicle (100) according to claim 3, characterized in that the third end cover (50) is integrally formed with the speed reducer case (21), and a side of the third end cover (50) facing the motor case (11) is provided with a fixing flange (51).

5. The powertrain for an electric vehicle (100) according to claim 4, characterized in that an end of the motor shaft (12) facing the reducer (20) is provided with a bearing (60), the bearing (60) being disposed within the fixing flange (51).

6. The powertrain for an electric vehicle (100) of claim 4, characterized in that the input shaft (22) passes through the stationary flange (51) to be in power connection with the motor shaft (12).

7. The powertrain for an electric vehicle (100) of claim 6, characterized in that one of the motor shaft (12) and the input shaft (22) is provided with internal splines, and the other of the motor shaft (12) and the input shaft (22) is provided with external splines that mate with the internal splines.

8. The powertrain (100) for an electric vehicle according to claim 7, characterized in that the third end cover (50) is further provided with a plurality of reinforcing flanges (52) surrounding the input shaft (22) at intervals in a radial direction of the input shaft (22).

9. The powertrain for an electric vehicle (100) according to claim 8, characterized in that the third end cover (50) is further provided with a reinforcing rib (53) in a radial direction of the input shaft (22), the reinforcing rib (53) penetrating a plurality of the reinforcing flanges (52) to be connected with the fixing flange (51).

10. An electric vehicle, characterized by comprising: the locomotion assembly (100) of any one of claims 1-9.