CN216545693U - Compact double-motor double-gear electric drive axle system - Google Patents
Compact double-motor double-gear electric drive axle system Download PDFInfo
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- CN216545693U CN216545693U CN202122808635.2U CN202122808635U CN216545693U CN 216545693 U CN216545693 U CN 216545693U CN 202122808635 U CN202122808635 U CN 202122808635U CN 216545693 U CN216545693 U CN 216545693U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
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Abstract
There is provided a compact dual motor dual gear electric drive axle system comprising: a first motor; a first countershaft; a second motor; a second countershaft; a first hollow shaft; a second hollow shaft; a third hollow shaft; and a differential. The system has the advantages of simple structure, small volume, convenient assembly, high transmission efficiency and the like.
Description
Technical Field
The utility model relates to the field of new energy vehicle transmission, in particular to a compact double-motor double-gear electric drive axle system.
Background
The power system of the new energy commercial automobile can be divided into the following three types, wherein the first type is a traditional central driving arrangement mode, namely a motor, a gearbox and a drive axle; the second is an electric drive axle structure, compared with a central drive, the structure removes a gearbox, a transmission shaft and a bevel gear in the original drive axle, and a single-gear or few-gear speed reducing mechanism is additionally arranged; the third is a wheel edge/hub motor driving structure, compared with an electric drive axle mechanism, the structure is changed into an electronic differential mechanism by removing a physical differential mechanism, each wheel is driven by a motor independently, and the motor transmits power to the wheel through a fixed speed ratio speed reducer.
In view of the development trend of the driving system, the power system is developed in the directions of integration, high efficiency and light weight in general, the three driving structures have the highest integration degree, namely the wheel edge/hub motor driving structure, the next electric driving bridge structure and the lowest integration degree, namely the central driving structure, and generally, the assembly is lighter as the integration degree is higher, so the light weight ordering is consistent with the integration degree. In terms of efficiency, the first central driving structure has higher working efficiency of the motor due to more gears of the gearbox, but has lower overall efficiency due to the fact that the central driving transmission chain is longer and needs to transmit power to the drive axle through the bevel gear with lower transmission efficiency; although the transmission chain of the third wheel edge/hub motor driving structure is shortest, the driving motor is difficult to be in a high-efficiency area under all working conditions due to the adoption of a constant speed reducing mechanism, and the overall efficiency is not high; and the second kind of electric drive axle structure adopts a few gear reduction gears, can make the motor be in the high efficiency interval most of time under full operating mode, and the driving chain is also shorter, and is the spur gear transmission entirely, and whole comprehensive efficiency is the highest. The electric drive axle is the mainstream development trend in the field of new energy commercial vehicles at present by combining other factors, such as technical difficulty, arrangement space, vehicle control and the like.
The structural difficulty of the electric drive axle is that a speed reducing mechanism with few gears is arranged in the limited space of an axle housing, so that the whole vehicle can meet the requirements of climbing gradient and high-speed running. At present, a single motor and a two-gear reduction box are arranged on the market, and for a commercial vehicle, the size of the single motor is larger and the power modes are relatively fewer due to the fact that the required torque ratio is larger.
Therefore, there is a need to develop a compact dual-motor dual-gear electric drive axle system to solve one or more of the above-mentioned technical problems.
SUMMERY OF THE UTILITY MODEL
To solve at least one of the above technical problems, according to an aspect of the present invention, there is provided a compact dual-motor dual-gear electric drive axle system, comprising:
the first motor is provided with a first output shaft, and the first output shaft is connected with a first output gear;
a first countershaft arranged in parallel with the first output shaft, the first countershaft being connected with a first countershaft left end gear, a first countershaft intermediate gear, and a first countershaft right end gear, the first countershaft left end gear being in meshing engagement with the first output gear;
the second motor is provided with a second output shaft, and the second output shaft is connected with a second output gear;
a second counter shaft arranged in parallel with the second output shaft, the second counter shaft being connected with a second counter shaft left end gear, a second counter shaft intermediate gear, and a second counter shaft right end gear, the second counter shaft left end gear being meshed with the second output gear;
a first hollow shaft, one end of which is connected with a first hollow shaft gear and the other end of which is connected with a first hollow shaft lock ring, wherein the first hollow shaft gear is respectively meshed with the first countershaft intermediate gear and the second countershaft intermediate gear;
one end of the second hollow shaft is connected with a second hollow shaft gear, the other end of the second hollow shaft is connected with a second hollow shaft locking ring, and the second hollow shaft gear is respectively meshed with the right end gear of the first auxiliary shaft and the right end gear of the second auxiliary shaft;
a third hollow shaft to which a shift module and a reduction planetary row are connected, the third hollow shaft being relatively rotatably fitted in and passing through the first and second hollow shafts, the shift module being disposed between the first and second hollow shaft locking rings and selectively engaged with the first or second hollow shaft locking ring; and
and the differential is connected with the reduction planet row and is provided with a first output half shaft and a second output half shaft, and the first output half shaft can relatively rotatably penetrate through the third hollow shaft and extend out of the third hollow shaft.
In accordance with yet another aspect of the present invention, the first and second output half shafts are coaxial and extend in opposite directions.
According to yet another aspect of the present invention, the first output shaft is arranged in parallel with the second output shaft, and the first motor is arranged in parallel with the second motor.
According to another aspect of the present invention, the left end of the first output shaft is connected to the first output gear and the right end is connected to the first motor, and the left end of the second output shaft is connected to the second output gear and the right end is connected to the second motor.
According to yet another aspect of the present invention, the first and second electric machines are symmetrically arranged about the first output axle.
According to yet another aspect of the present invention, the compact dual-motor, two-gear electric drive axle system has a symmetrical configuration about a line on which the first output half shaft is located.
According to a further aspect of the utility model, the brake and the brake are arranged in succession in a direction perpendicular to the second hollow shaft.
According to yet another aspect of the utility model, the first output gear and the first layshaft left end gear form a pair of reduction gears and the second output gear and the second layshaft left end gear form a pair of reduction gears.
According to a further aspect of the utility model, the reduction planetary row comprises a sun wheel, planet wheels, a planet carrier and a ring gear, the planet carrier being connected with the housing of the differential.
The utility model can obtain one or more of the following technical effects:
1. the two-gear speed reducing mechanism is integrated by adopting external double-motor drive, has compact and simple structure and is easy to arrange;
2. the transmission with a large reduction ratio can be realized so as to reduce the requirement on large torque of the motor.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic diagram of a compact dual-motor dual-gear electric drive axle system according to a preferred embodiment of the present invention.
Detailed Description
The best mode for carrying out the present invention will be described in detail with reference to the accompanying drawings, wherein the detailed description is for the purpose of illustrating the utility model in detail, and is not to be construed as limiting the utility model, as various changes and modifications can be made therein without departing from the spirit and scope thereof, which are intended to be encompassed within the appended claims.
Example 1
According to a preferred embodiment of the present invention, referring to fig. 1, there is provided a compact dual-motor dual-gear electric drive axle system, characterized by comprising:
the device comprises a first motor 1 and a second motor, wherein the first motor 1 is provided with a first output shaft 2, and a first output gear 3 is connected with the first output shaft 2;
a first countershaft 5 arranged in parallel with the first output shaft 2, the first countershaft 5 being connected with a first countershaft left end gear 4, a first countershaft intermediate gear 6, and a first countershaft right end gear 7, the first countershaft left end gear 4 being engaged with the first output gear 3;
a second motor 21 having a second output shaft 22, the second output shaft 22 being connected to a second output gear 23;
a second counter shaft 25 arranged in parallel with the second output shaft 22, the second counter shaft 25 being connected with a second counter shaft left end gear 24, a second counter shaft intermediate gear 26, and a second counter shaft right end gear 27, the second counter shaft left end gear 24 being meshed with the second output gear 23;
a first hollow shaft, one end of which is connected with a first hollow shaft gear 8 and the other end of which is connected with a first hollow shaft lock ring 10, wherein the first hollow shaft gear 8 is respectively meshed with the first countershaft intermediate gear 6 and the second countershaft intermediate gear 26;
a second hollow shaft, one end of which is connected with a second hollow shaft gear 9 and the other end of which is connected with a second hollow shaft lock ring 12, wherein the second hollow shaft gear 9 is respectively meshed with the first auxiliary shaft right gear 7 and the second auxiliary shaft right gear 27;
a third hollow shaft 20 to which a shift module 11 and a reduction planetary row are connected, the third hollow shaft 20 being relatively rotatably sleeved inside and passing through the first and second hollow shafts, the shift module 11 being disposed between the first and second hollow shaft locking rings 10 and 12 and selectively engaged with the first or second hollow shaft locking ring 10 or 12; and
and a differential 17 connected with the reduction planetary row and having a first output half shaft 18 and a second output half shaft 19, the first output half shaft 18 being relatively rotatably disposed through the third hollow shaft 20 and extending out of the third hollow shaft 20.
In accordance with a further preferred embodiment of the present invention, the first output half shaft 18 and the second output half shaft 19 extend coaxially and in opposite directions.
According to a further preferred embodiment of the utility model, said first output shaft 2 is arranged in parallel with the second output shaft 22 and the first electric machine 1 is arranged in parallel with the second electric machine 21.
According to another preferred embodiment of the present invention, the first output shaft 2 is connected to the first output gear 3 at the left end and connected to the first motor 1 at the right end, and the second output shaft 22 is connected to the second output gear 23 at the left end and connected to the second motor 21 at the right end.
According to a further preferred embodiment of the utility model, said first electric machine 1 and second electric machine 21 are arranged symmetrically with respect to the first output half-shaft 18.
According to yet another preferred embodiment of the present invention, the compact dual-motor, two-gear electric drive axle system has a symmetrical configuration about a line in which the first output half shaft 18 is located.
According to a further preferred embodiment of the utility model, the synchronizer and the brake are arranged in succession in a direction perpendicular to the second hollow shaft.
According to a further preferred embodiment of the utility model, the first output gearwheel 3 and the first left-hand layshaft gearwheel 4 form a pair of reduction gearings, and the second output gearwheel 23 and the second left-hand layshaft gearwheel 24 form a pair of reduction gearings.
According to a further preferred embodiment of the utility model, the reduction planetary row comprises a sun wheel 13, planet wheels 14, a planet carrier 16 and a ring gear 15, the planet carrier 16 being connected to the housing of a differential 17.
The utility model can obtain one or more of the following technical effects:
1. the two-gear speed reducing mechanism is integrated by adopting external double-motor drive, has compact and simple structure and is easy to arrange;
2. the transmission with a large reduction ratio can be realized so as to reduce the requirement on large torque of the motor.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (8)
1. A compact dual-motor dual-gear electric drive axle system is characterized by comprising:
the first motor is provided with a first output shaft, and the first output shaft is connected with a first output gear;
a first countershaft arranged in parallel with the first output shaft, the first countershaft being connected with a first countershaft left end gear, a first countershaft intermediate gear, and a first countershaft right end gear, the first countershaft left end gear being in meshing engagement with the first output gear;
the second motor is provided with a second output shaft, and the second output shaft is connected with a second output gear;
a second counter shaft arranged in parallel with the second output shaft, the second counter shaft being connected with a second counter shaft left end gear, a second counter shaft intermediate gear, and a second counter shaft right end gear, the second counter shaft left end gear being meshed with the second output gear;
a first hollow shaft, one end of which is connected with a first hollow shaft gear and the other end of which is connected with a first hollow shaft lock ring, wherein the first hollow shaft gear is respectively meshed with the first countershaft intermediate gear and the second countershaft intermediate gear;
one end of the second hollow shaft is connected with a second hollow shaft gear, the other end of the second hollow shaft is connected with a second hollow shaft locking ring, and the second hollow shaft gear is respectively meshed with the right end gear of the first auxiliary shaft and the right end gear of the second auxiliary shaft;
a third hollow shaft to which a shift module and a reduction planetary row are connected, the third hollow shaft being relatively rotatably fitted in and passing through the first and second hollow shafts, the shift module being disposed between the first and second hollow shaft locking rings and selectively engaged with the first or second hollow shaft locking ring; and
and the differential is connected with the reduction planet row and is provided with a first output half shaft and a second output half shaft, and the first output half shaft can relatively rotatably penetrate through the third hollow shaft and extend out of the third hollow shaft.
2. The compact dual-motor, dual-gear electric drive axle system of claim 1, wherein the first and second output half shafts are coaxial and extend in opposite directions.
3. The compact dual-motor dual-gear electric drive axle system according to claim 1, wherein the first output shaft is arranged in parallel with the second output shaft, and the first motor is arranged in parallel with the second motor.
4. The compact dual-motor dual-gear electric drive axle system according to any one of claims 1-3, wherein a left end of the first output shaft is connected to the first output gear and a right end is connected to the first motor, and a left end of the second output shaft is connected to the second output gear and a right end is connected to the second motor.
5. The compact dual-motor, dual-gear electric drive axle system of claim 4, wherein the first and second electric machines are symmetrically arranged about a first output axle shaft.
6. The compact dual-motor dual-gear electric drive axle system according to any one of claims 1-3, having a symmetrical configuration about a line on which the first output half shaft is located.
7. The compact dual-motor, dual-gear electric drive axle system of claim 6, wherein the first output gear and first countershaft left end gear form a pair of reduction gears and the second output gear and second countershaft left end gear form a pair of reduction gears.
8. The compact dual-motor, dual-gear electric drive axle system of claim 1, wherein the reduction planetary row comprises a sun gear, a planet carrier, and a ring gear, the planet carrier being connected with a housing of the differential.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122808635.2U CN216545693U (en) | 2021-11-16 | 2021-11-16 | Compact double-motor double-gear electric drive axle system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122808635.2U CN216545693U (en) | 2021-11-16 | 2021-11-16 | Compact double-motor double-gear electric drive axle system |
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| CN216545693U true CN216545693U (en) | 2022-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122808635.2U Active CN216545693U (en) | 2021-11-16 | 2021-11-16 | Compact double-motor double-gear electric drive axle system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113978224A (en) * | 2021-11-16 | 2022-01-28 | 江苏华永复合材料有限公司 | Double-motor double-gear electric drive axle |
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2021
- 2021-11-16 CN CN202122808635.2U patent/CN216545693U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113978224A (en) * | 2021-11-16 | 2022-01-28 | 江苏华永复合材料有限公司 | Double-motor double-gear electric drive axle |
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