CN212412973U

CN212412973U - Power assembly of electric automobile

Info

Publication number: CN212412973U
Application number: CN202021527329.0U
Authority: CN
Inventors: 沈晓春; 钟华; 欧阳胜群; 雷有国; 徐丹; 李任华
Original assignee: Jiangxi Jiangling Group New Energy Automobile Co Ltd
Current assignee: Jiangxi Jiangling Group New Energy Automobile Co Ltd
Priority date: 2020-07-28
Filing date: 2020-07-28
Publication date: 2021-01-26
Anticipated expiration: 2030-07-28

Abstract

The utility model provides an electric automobile power assembly, including driving motor, the reduction gear, end cover and machine controller, the end cover is as driving motor's front end housing and the front end cover of reduction gear simultaneously, driving motor includes sharing pivot and winding three-phase line, the reduction gear includes the main reduction gear is vice, the sharing pivot is passed the end cover and is connected with the main reduction gear is vice, machine controller is including connecting the copper sheet, connect copper sheet and winding three-phase line fixed connection, driving motor's top is provided with a plurality of mount pads, the mounting hole has been seted up in the mount pad, machine controller passes through mount pad and driving motor fixed connection. Through the integrated design, the overall layout among all parts is optimized, so that the structure of the power assembly of the electric automobile is more compact, the layout is more reasonable, the size of the power assembly is greatly reduced, the installation space in the front cabin of the automobile is reduced, and the installation of other parts is facilitated.

Description

Power assembly of electric automobile

Technical Field

The utility model relates to an electric automobile production technical field, in particular to electric automobile power assembly.

Background

With the rapid development of new energy technology, people are mature in the technical field of new energy electric automobile production and gradually popularized in daily life of people.

The power assembly is used as one of core components of the electric automobile and used for providing power for the electric automobile, and the power performance of the whole automobile is directly determined. The power assembly mainly comprises a driving motor, a motor controller and a speed reducer which are all core parts of the electric automobile. Due to the limitation of the installation space of the front cabin of the electric automobile, the installation requirement of the power assembly is higher and higher.

At present, a driving motor, a motor controller and a speed reducer in most of domestic electric automobile power assemblies are independently installed in an electric automobile front cabin, so that the electric automobile front cabin with limited space occupies larger installation space, and is not beneficial to installation of other parts in the front cabin.

SUMMERY OF THE UTILITY MODEL

Based on this, the utility model aims at providing an electric automobile power assembly to solve prior art's driving motor, machine controller and reduction gear and independently install in the electric automobile front deck, lead to having taken great installation space in limited electric automobile front deck, be unfavorable for the problem of other spare parts installations in the front deck.

The utility model provides an electric automobile power assembly, is in including driving motor, setting reduction gear, the fixed connection of driving motor one side driving motor with end cover between the reduction gear and setting are in the machine controller at driving motor top, the end cover simultaneously as driving motor's front end housing with the front end housing of reduction gear, driving motor includes sharing pivot and winding three-phase line, the reduction gear includes that the final drive gear is vice, the sharing pivot is passed the end cover with the final drive gear is vice to be connected, machine controller is including connecting the copper sheet, connect the copper sheet with winding three-phase line fixed connection, driving motor's top is provided with a plurality of mount pads, the mounting hole has been seted up in the mount pad, machine controller passes through the mount pad with driving motor fixed connection.

The utility model has the advantages that: the shell structures of the driving motor, the speed reducer and the motor controller in the electric automobile power assembly are correspondingly integrally designed, and the overall layout among all parts is optimized, so that the structure of the electric automobile power assembly is more compact, the layout is more reasonable, the size of the power assembly is greatly reduced, the installation space in the front cabin of the automobile is reduced, and the installation of other parts is facilitated. And the running reliability of the power system is improved by sharing the rotating shaft, the number of matched bearings is reduced, and the production cost is reduced.

Preferably, the driving motor further comprises a rotor assembly, and the rotor assembly is in interference fit with the common rotating shaft.

Preferably, the driving motor further comprises a support sleeve, and one end of the common rotating shaft penetrates through the support sleeve to be connected with the main reduction gear pair.

Preferably, the driving motor further comprises a stator assembly, and the stator assembly is fixedly connected with the winding three-phase line.

Preferably, two bearings are arranged at two ends of the common rotating shaft, and the two bearings are in interference fit with the common rotating shaft to realize rotation.

Preferably, the speed reducer further comprises a primary gear pair, and the primary gear pair is connected with one end of the common rotating shaft.

Preferably, one side of the motor controller is provided with a charge and discharge interface.

Preferably, the rear end cover of the speed reducer and the rear end cover of the driving motor are both provided with lifting lugs.

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

Fig. 1 is a schematic structural diagram of an electric vehicle powertrain according to a first embodiment of the present invention;

fig. 2 is a front view of an electric vehicle powertrain according to a first embodiment of the present invention;

fig. 3 is a schematic cross-sectional view taken along line a-a in fig. 2.

Description of the main element symbols:

the following detailed description of the invention will be further described in conjunction with the above-identified drawings.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Several embodiments of the invention are given in the accompanying drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 3, an electric vehicle powertrain according to a first embodiment of the present invention includes: drive motor 10, reducer 20, end cap 30, and motor controller 40.

Wherein: the electric automobile power assembly comprises a driving motor 10, a speed reducer 20 arranged on one side of the driving motor 10, an end cover 30 fixedly connected between the driving motor 10 and the speed reducer 20, and a motor controller 40 arranged on the top of the driving motor 10, wherein the end cover 30 is used as a front end cover of the driving motor 10 and a front end cover of the speed reducer 20 at the same time, the driving motor 10 comprises a shared rotating shaft 11 and a winding three-phase line 12, the speed reducer 20 comprises a main reduction gear pair 21, the shared rotating shaft 11 penetrates through the end cover 30 to be connected with the main reduction gear pair 21, the motor controller 40 comprises a connecting copper sheet 41, the connecting copper sheet 41 is fixedly connected with the winding three-phase line 12, the top of the driving motor 10 is provided with a plurality of mounting seats 13, mounting holes are formed in the mounting seats 13, and the motor controller 40 is fixedly connected with the driving motor 10.

In this embodiment, as shown in fig. 1 to 3, it should be noted that the power assembly of the electric vehicle mainly includes: the driving motor 10, the speed reducer 20 and the motor controller 40, wherein the driving motor 10 and the speed reducer 20 are connected to form an integral structure through the end cover 30, in this embodiment, it can be understood that one end of the end cover 30 matches with the size of the casing of the driving motor 10, and the other end of the end cover 30 matches with the size of the casing of the speed reducer 20, so that the end cover 30 can serve as both the front end cover of the driving motor 10 and the front end cover of the speed reducer 20. In the present embodiment, as shown in fig. 3, the driving motor 10 includes a common rotating shaft 11 and a winding three-phase line 12, and it should be noted that, in order to further improve the integration of the power system, the common rotating shaft 11 penetrates through the driving motor 10, the end cover 30 and the speed reducer 20, so as to improve the reliability and stability of the power assembly by the common rotating shaft, and at the same time, reduce the number of matching rotating shafts and bearings. In order to electrically connect the driving motor 10 and the motor controller 40, the winding three-phase line 12 and the connecting copper sheet 41 in the motor controller 40 are fixedly connected together by bolts.

In the present embodiment, as shown in fig. 3, it should be noted that the driving motor 10 further includes a rotor assembly 14, and the rotor assembly 14 is in interference fit with the common rotating shaft 11 to achieve fast rotation of the common rotating shaft 11. It should be noted that the driving motor 10 further includes a supporting sleeve 15, and one end of the common rotating shaft 11 passes through the supporting sleeve 15 and is connected with the main reduction gear pair 21. The support sleeve 15 is used to prevent the middle part of the common rotating shaft 11 from vertical disturbance during the rotation process, which affects the stability of the driving motor 10.

In this embodiment, as shown in fig. 3, it should be further described that the driving motor 10 further includes a stator assembly 16, and the stator assembly 16 is fixedly connected to the winding three-phase line 12, and the stator assembly 16 is sleeved outside the rotor assembly 14. Thereby connecting the inside of the driving motor 10 and the inside of the motor controller 40 as a whole. It should be noted that, obviously, two bearings 50 are provided at both ends of the common rotating shaft 11, and the two bearings 50 are in interference fit with the common rotating shaft 11 to realize rotation. In other cases, other connection manners may be adopted between the interior of the driving motor 10 and the interior of the motor controller 40, and are within the protection scope of the present embodiment.

In the present embodiment, in particular, the reducer 20 further comprises a primary gear pair 22, it being apparent that the primary gear pair 22 is connected to one end of the common rotating shaft 11, and the primary gear pair 22 is installed between the main reduction gear pair 21 and the bearing 50. In the present embodiment, for the convenience of using the motor controller 40, a charge/discharge interface 41 is provided at one side of the motor controller 40. In order to facilitate the installation of the electric vehicle power system, lifting lugs 60 are arranged on the rear end cover of the speed reducer 20 and the rear end cover of the driving motor 10. As shown in fig. 1 to 3, the two lifting lugs 60 may be arranged, and in other cases, three, four, five, etc. may also be arranged, all within the protection scope of the present embodiment.

When the electric automobile power assembly is specifically implemented, the shell structures of the driving motor 10, the speed reducer 20 and the motor controller 40 in the electric automobile power assembly are correspondingly integrally designed, and the overall layout among all parts is optimized, so that the electric automobile power assembly is more compact in structure and more reasonable in layout, the size of the power assembly is greatly reduced, the installation space in the front cabin of an automobile is reduced, and the installation of other parts is facilitated. And the running reliability of the power system is improved by sharing the rotating shaft 11, the number of matched bearings is reduced, and the production cost is reduced.

It should be noted that the above implementation process is only for illustrating the applicability of the present application, but this does not represent that the electric vehicle powertrain of the present application has only the above implementation flow, and on the contrary, the electric vehicle powertrain of the present application can be incorporated into the feasible embodiments of the present application as long as the electric vehicle powertrain of the present application can be implemented.

To sum up, the utility model discloses electric automobile power assembly in the middle of the above-mentioned embodiment carries out corresponding integrated design through the shell structure to driving motor 10 in this electric automobile power assembly, reduction gear 20 and machine controller 40, and optimized the overall arrangement between each spare part for this electric automobile power assembly's structure is compacter, and the overall arrangement is more reasonable, has reduced this power assembly's volume greatly, thereby has reduced the installation space in the car front deck, has made things convenient for the installation of other spare parts. And the running reliability of the power system is improved by sharing the rotating shaft 11, the number of matched bearings is reduced, and the production cost is reduced.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides an electric automobile power assembly which characterized in that: be in including driving motor, setting reduction gear, the fixed connection of driving motor one side driving motor with end cover and setting between the reduction gear are in the machine controller at driving motor top, the end cover simultaneously conduct driving motor's front end housing with the front end housing of reduction gear, driving motor includes sharing pivot and winding three-phase line, the reduction gear includes the main reduction gear pair, the sharing pivot is passed the end cover with the main reduction gear pair is connected, machine controller is including connecting the copper sheet, connect the copper sheet with winding three-phase line fixed connection, driving motor's top is provided with a plurality of mount pads, the mounting hole has been seted up in the mount pad, machine controller passes through the mount pad with driving motor fixed connection.

2. The electric vehicle powertrain of claim 1, wherein: the driving motor further comprises a rotor assembly, and the rotor assembly is in interference fit with the shared rotating shaft.

3. The electric vehicle powertrain of claim 2, wherein: the driving motor further comprises a supporting sleeve, and one end of the common rotating shaft penetrates through the supporting sleeve to be connected with the main reduction gear pair.

4. The electric vehicle powertrain of claim 3, wherein: the driving motor also comprises a stator assembly, and the stator assembly is fixedly connected with the winding three-phase line.

5. The electric vehicle powertrain of claim 1, wherein: two bearings are arranged at two ends of the shared rotating shaft, and the two bearings are in interference fit with the shared rotating shaft to realize rotation.

6. The electric vehicle powertrain of claim 1, wherein: the speed reducer further comprises a primary gear pair, and the primary gear pair is connected with one end of the common rotating shaft.

7. The electric vehicle powertrain of claim 1, wherein: and one side of the motor controller is provided with a charge-discharge interface.

8. The electric vehicle powertrain of claim 1, wherein: lifting lugs are arranged on the rear end cover of the speed reducer and the rear end cover of the driving motor.