CN116080379A

CN116080379A - Distributed double-motor driving system and vehicle

Info

Publication number: CN116080379A
Application number: CN202211624653.8A
Authority: CN
Inventors: 姚玉武; 宋永亮; 邓华红; 李凯; 吴学成; 金阳; 田江; 邵玉鹏
Original assignee: Shanghai Aifu Yiwei New Energy Technology Co ltd
Current assignee: Shanghai Aifu Yiwei New Energy Technology Co ltd
Priority date: 2022-12-16
Filing date: 2022-12-16
Publication date: 2023-05-09

Abstract

The invention provides a distributed double-motor driving system and a vehicle, which comprise two motors, wherein the two motors are sequentially arranged at intervals in the length direction of the vehicle, and the two motors are symmetrically arranged in a one hundred eighty degree rotation mode; the two motors are in transmission connection with gear reduction mechanisms, the two gear reduction mechanisms are respectively positioned on two sides of the width direction of the vehicle, and the two gear reduction mechanisms are arranged in a one hundred eighty degree rotational symmetry mode. Through being one hundred eighty degrees rotational symmetry with two motors and setting up, also be one hundred eighty degrees rotational symmetry with two gear reduction mechanisms and set up, and the rotational symmetry center of two motors and the rotational symmetry center of two gear reduction mechanisms be same rotational symmetry center, help reducing car width direction's overall arrangement space, and optimized the holistic spatial layout of bi-motor actuating system, and transmission simple structure.

Description

Distributed double-motor driving system and vehicle

Technical Field

The invention relates to the technical field of driving systems, in particular to a distributed double-motor driving system and a vehicle, and particularly relates to a new energy automobile driving system.

Background

New energy automobiles, especially electric automobiles, are the mainstream research direction of the current automobile manufacturing industry, pure electric systems in the current new energy automobile field are provided with distributed motor driving systems, and the left and right wheels respectively need a motor to drive, but based on the whole automobile space structure, the existing motor symmetrical arrangement technical scheme in the market is difficult to meet the whole automobile space size arrangement.

The present disclosure is CN115257333a, which discloses a dual-motor drive assembly for an electric all-terrain vehicle, comprising a front drive axle and a rear drive axle which are independently controlled, wherein the front drive axle and the rear drive axle each comprise a motor, a gear box, a differential and two half shafts which are sequentially connected in a power mode, the differential is arranged between the two half shafts, differential locks are configured on the differential, and output shafts of the motors are parallel to or vertically staggered with the half shafts.

In the prior art, the dual-motor driving assembly is arranged side by side in the width direction of the electric automobile, so that the space layout is difficult, the structure of the electric driving assembly is complex, and the electric driving assembly needs to be improved.

Disclosure of Invention

In view of the drawbacks of the prior art, an object of the present invention is to provide a distributed dual motor drive system and a vehicle.

The invention provides a distributed double-motor driving system and a vehicle, which comprise two motors, wherein the two motors are sequentially arranged at intervals in the length direction of the vehicle, and the two motors are symmetrically arranged in a one hundred eighty degree rotation mode; the two motors are in transmission connection with gear reduction mechanisms, the two gear reduction mechanisms are respectively positioned on two sides of the width direction of the vehicle, and the two gear reduction mechanisms are arranged in a one hundred eighty degree rotational symmetry mode.

Preferably, the two motors are arranged in a staggered manner, the two motors are overlapped in a staggered manner in the width direction of the automobile, and the output shafts of the two motors are at the same height in the height direction of the automobile.

Preferably, the gear reduction mechanism comprises a motor output gear, an intermediate transmission shaft and a reduction output shaft; the middle transmission shaft is coaxially and fixedly provided with a first transmission tooth and a second transmission tooth, and the first transmission tooth is meshed with the motor output gear; and a third transmission tooth is coaxially and fixedly arranged on the speed reduction output shaft, and the third transmission tooth is meshed with the second transmission tooth.

Preferably, both the intermediate drive shaft and the reduction output shaft are located on the lower side of the motor output shaft in the vehicle height direction.

Preferably, the axes of the two reduction output shafts are collinear in the vehicle width direction.

Preferably, the rotational symmetry points of the two motors are located on the axis lines of the two reduction output shafts.

Preferably, the automobile further comprises a main shell and two end covers, wherein the two motors and the two gear reduction mechanisms are respectively installed in the main shell, and the two end covers are respectively and fixedly installed at two ends of the main shell along the width direction of the automobile.

Preferably, the outlet ends of the two motors are respectively positioned at two ends of the main shell along the width direction of the automobile, and the outlet wires are led out along the radial direction of the motors, a controller is integrated on the main shell, and the controller is respectively connected with the outlet ends of the two motors.

Preferably, the controller may also be provided separately from the main housing.

According to the vehicle provided by the invention, the output shafts of the two gear reduction mechanisms are respectively in transmission connection with the wheels on two sides of the width of the vehicle.

Compared with the prior art, the invention has the following beneficial effects:

1. according to the invention, the two motors are arranged in a one hundred eighty degree rotational symmetry manner, the two gear reduction mechanisms are also arranged in a one hundred eighty degree rotational symmetry manner, and the rotational symmetry centers of the two motors and the rotational symmetry center of the two gear reduction mechanisms are the same rotational symmetry center, so that the reduction of the layout space in the width direction of the automobile is facilitated, the overall space layout of the double-motor driving system is optimized, and the transmission structure is simple.

2. According to the invention, the two motors and the two gear reduction mechanisms are both arranged in the main shell, so that the integration level of the double-motor driving system is further improved, and the controller can be integrated on the main shell, thereby realizing three-in-one electric driving.

3. According to the invention, the space for installing the gear reduction mechanism is formed by matching the two cavities on the main shell, the main shell and the end cover, so that on one hand, the installation of the two motors and the gear reduction mechanism is realized, on the other hand, the stability of the double-motor driving system is ensured, the space layout is optimized, and the disassembly and the assembly are convenient.

Drawings

Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:

FIG. 1 is a schematic diagram of the overall structure of a dual motor drive system embodying the present invention;

FIG. 2 is a schematic view of the overall structure of a dual motor drive system in the Y-axis direction, embodying the present invention;

FIG. 3 is a schematic diagram of an exploded view of a dual motor drive system embodying the present invention;

fig. 4 is an axial structure schematic diagram of a dual motor drive system embodying the present invention.

The figure shows:

second gear 25 of motor 1

Third gear teeth 26 of gear reduction mechanism 2

Main housing 3 of motor output gear 21

Intermediate drive shaft 22 end cap 4

Chamber 5 of speed reducing output shaft 23

First gear 24 outlet end 6

Detailed Description

The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present invention.

Example 1

As shown in fig. 1, 2, 3 and 4, the distributed dual-motor driving system and the vehicle provided by the invention comprise a main housing 3, two end covers 4, two motors 1 and two gear reduction mechanisms 2, wherein the two motors 1 and the two gear reduction mechanisms 2 are all installed in the main housing 3, and the two end covers 4 are respectively and fixedly installed at two ends of the main housing 3 along the width direction of the vehicle.

The width direction of the car is defined as the Y-axis direction, the length direction of the car is defined as the X-axis direction, and the height direction of the car is defined as the Z-axis direction.

The two motors 1 are sequentially arranged at intervals in the length direction of the automobile, and the two motors 1 are rotationally symmetrical at one hundred and eighty degrees. The two motors 1 are respectively connected with two gear reduction mechanisms 2 in a transmission way, the two gear reduction mechanisms 2 are respectively positioned at two sides of the width direction of the vehicle, and the two gear reduction mechanisms 2 are arranged in a one hundred eighty degree rotation symmetry way.

Further, the two motors 1 are arranged in a staggered manner, and the output shafts of the two motors 1 are equal in height in the height direction of the automobile. The two motors 1 are arranged at intervals in the X-axis direction in a staggered manner. By arranging the two motors 1 with certain dislocation coincidence in the width direction of the automobile, the axial dimension is convenient to be reduced, and the rationality of engineering arrangement of other related components can be improved on the basis.

Further, the gear reduction mechanism 2 includes an output gear 21 of the motor 1, an intermediate transmission shaft 22, and a reduction output shaft 23. The intermediate transmission shaft 22 is coaxially and fixedly provided with a first transmission tooth 24 and a second transmission tooth 25, and the first transmission tooth 24 is meshed with the motor output gear 21. The speed reduction output shaft 23 is coaxially and fixedly provided with a third transmission tooth 26, and the third transmission tooth 26 is meshed with the second transmission tooth 25. Both the intermediate drive shaft 22 and the reduction output shaft 23 are located on the lower side of the output shaft of the motor 1 in the vehicle height direction. The axes of the two reduction output shafts 23 are collinear in the vehicle width direction. The rotational symmetry center of the two motors 1 and the rotational symmetry center of the two gear reduction mechanisms 2 are the same rotational symmetry center, and the rotational symmetry points of the two motors 1 are located on the axis connecting lines of the two reduction output shafts 23.

Through the arrangement of the gear reduction mechanism 2 in the X-axis direction, the Y-axis direction and the Z-axis direction, the space layout structure of the driving system of the double motor 1 is optimized, and the space layout of the driving system of the double motor 1 is more compact.

The end caps 4 are respectively and fixedly arranged on two sides of the main shell 3 along the width direction of the automobile, two chambers 5 are formed in the main shell 3 along the length direction of the automobile, the axes of the two chambers 5 are parallel to the width direction of the automobile, and the motor 1 is respectively and coaxially arranged in the two chambers 5. The output shafts of the two motors 1 are in transmission connection with a gear reduction mechanism 2, the two gear reduction mechanisms 2 are respectively positioned on two sides of the main shell 3 along the width direction of the automobile, and the main shell 3 is respectively matched with the two end covers 4 to form an installation space of the gear reduction mechanism 2.

More specifically, the main housing 3 is provided with two spaced chambers 5, the two motors 1 are respectively installed in the two chambers 5, the two chambers 5 are arranged at intervals along the X-axis direction, the central axes of the two chambers 5 are parallel to the Y-axis direction, the central axes of the two chambers 5 are equidistant from the central axis of the reduction output shaft 23, but the height of the whole vehicle can be arranged obliquely. An installation space of the gear reduction mechanism 2 is formed between the two end caps 4 and the main housing 3, and the two end caps 4 are respectively and tightly connected with the main housing 3. The output shaft of the motor 1, the middle transmission shaft 22 and the speed reduction output shaft 23 are respectively and rotatably connected with the end cover 4 through bearings, and the speed reduction output shaft 23 penetrates through the end cover 4 to extend outwards.

The outgoing line ends 6 of the two motors 1 are respectively positioned at two ends of the main shell 3 along the length direction of the automobile, outgoing lines are outgoing lines along the radial direction of the motors 1, a controller is integrated on the main shell 3, and the controller is respectively connected with the outgoing line ends 6 of the two motors 1. A three-in-one electric drive with the controller integrated on the main housing 3 can be realized.

The parameters of the two motors 1 in the present embodiment are the same, and the parameters of the two gear reduction mechanisms 2 are also the same. The two outputs of the driving system of the double motor 1 in the Y-axis direction are respectively controlled by the vector control of the two motors 1, and various working conditions such as differential speed and execution in the actual process are realized, so that the traditional differential mechanism system structure is eliminated, and the cost is reduced. Through the space arrangement, the dimension of the driving system of the double motor 1 in the Y-axis direction is optimized, and the A/B/C level vehicle models, the pick-up and the like can be easily arranged.

According to the invention, a vehicle comprises two driving wheels, wherein the two driving wheels are respectively positioned at two sides of the width direction of the vehicle, the output shafts of two gear reduction mechanisms 2 are respectively in transmission connection with the wheels at two sides of the width direction of the vehicle, and two reduction output shafts 23 are respectively in transmission connection with the two wheels.

Variation 1

According to the distributed dual motor driving system and the vehicle provided by the invention, the controller can be further arranged separately from the main shell 3. The two-in-one split type electric drive of the controller and the double-motor 1 driving system is realized.

In the description of the present application, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a specific orientation, be configured and operated in a specific orientation, and are not to be construed as limiting the present application.

The foregoing describes specific embodiments of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without affecting the spirit of the invention. The embodiments of the present application and features in the embodiments may be combined with each other arbitrarily without conflict.

Claims

1. The distributed double-motor driving system is characterized by comprising two motors (1), wherein the two motors (1) are sequentially arranged at intervals in the length direction of an automobile, and the two motors (1) are symmetrically arranged in a one-hundred-eighty degree rotation mode;

the two motors (1) are connected with gear reduction mechanisms (2) in a transmission manner, the two gear reduction mechanisms (2) are respectively located on two sides of the width direction of the vehicle, and the two gear reduction mechanisms (2) are symmetrically arranged in a one hundred eighty degree rotation mode.

2. The distributed dual-motor driving system according to claim 1, wherein two motors (1) are arranged in a staggered manner, the two motors (1) are staggered and overlapped in the width direction of the automobile, and the output shafts of the two motors (1) are equal in height direction of the automobile.

3. A distributed dual motor drive system according to claim 1, wherein the gear reduction mechanism (2) comprises a motor output gear (21), an intermediate drive shaft (22) and a reduction output shaft (23);

a first transmission tooth (24) and a second transmission tooth (25) are coaxially and fixedly arranged on the middle transmission shaft (22), and the first transmission tooth (24) is meshed with the motor output gear (21);

a third transmission tooth (26) is coaxially and fixedly arranged on the speed reduction output shaft (23), and the third transmission tooth (26) is meshed with the second transmission tooth (25).

4. A distributed dual motor drive system according to claim 3, characterized in that both the intermediate drive shaft (22) and the reduction output shaft (23) are located on the underside of the output shaft of the motor (1) in the direction of the car height.

5. A distributed two-motor drive system according to claim 3, characterized in that the axes of the two reduction output shafts (23) are collinear in the vehicle width direction.

6. A distributed dual motor drive system according to claim 5, characterized in that the rotational symmetry points of the two motors (1) are located on the axis connection of the two reduction output shafts (23).

7. A distributed dual motor drive system as claimed in claim 1, further comprising a main housing (3) and two end caps (4), both of said motors (1) and both of said gear reduction mechanisms (2) being mounted in the main housing (3), both of said end caps (4) being fixedly mounted at both ends of the main housing (3) in the vehicle width direction, respectively.

8. A distributed dual motor drive system according to claim 7, wherein the outlet terminals (6) of the two motors (1) are respectively located at two ends of the main housing (3) in the width direction of the vehicle, and the outlet wires are respectively led out in the radial direction of the motors (1), and a controller is integrated on the main housing (3) and is respectively connected with the outlet terminals (6) of the two motors (1).

9. A distributed dual motor drive system according to claim 8, wherein the controller is further arranged separately from the main housing (3).

10. A vehicle, characterized in that a distributed dual motor drive system according to any one of claims 1-9 is used, the output shafts of two gear reduction mechanisms (2) being in driving connection with the wheels on both sides of the vehicle width, respectively.