CN216733762U - Electric drive axle and vehicle - Google Patents
Electric drive axle and vehicle Download PDFInfo
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- CN216733762U CN216733762U CN202220415778.9U CN202220415778U CN216733762U CN 216733762 U CN216733762 U CN 216733762U CN 202220415778 U CN202220415778 U CN 202220415778U CN 216733762 U CN216733762 U CN 216733762U
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- sun gear
- reduction
- gear
- output shaft
- speed change
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Abstract
The utility model provides an electric drive axle and a vehicle, wherein the electric drive axle comprises a driving assembly, and the driving assembly comprises two motors; the speed reduction box assembly comprises two speed reduction planetary wheel sets and a speed reduction sun wheel, and each motor is in meshing transmission with the speed reduction sun wheel through one speed reduction planetary wheel set; and the wheel assembly is in transmission connection with the reduction sun gear. The motor is started according to the torque required by the vehicle, the motor is not interfered with each other, the risk of no power interruption is achieved, the safe and reliable running of the vehicle is ensured, the overall structure is more compact, the unsprung mass is effectively reduced, and the stability of the vehicle is facilitated.
Description
Technical Field
The utility model relates to the technical field of automobile manufacturing, in particular to an electric drive axle and a vehicle.
Background
The electric drive axle is an electromechanical integrated drive system designed for the electric automobile and has the advantages of high integration degree, small volume, low energy consumption and the like. As a core component of an electric vehicle, its performance directly affects the dynamic performance and the economical efficiency of the electric vehicle. The electric drive axle mainly comprises a motor, a reduction gearbox, wheels and the like, the motor outputs torque and is transmitted to the wheels through the reduction gearbox, the number of the motors of the traditional electric drive axle is only one, and the requirements of dynamic property are met, so that the motor is required to be large in size and mass, the occupied large arrangement space of a vehicle chassis is caused, and the smoothness of the vehicle is also influenced. In addition, when the motor is damaged, the phenomenon of power interruption can occur, and the use of the vehicle is further influenced.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model provides an electric drive axle and a vehicle which are light in unsprung weight, realize no power interruption and run safely and reliably.
According to an object of the present invention, there is provided an electric drive axle including:
the driving assembly comprises two motors;
the speed reduction box assembly comprises two speed reduction planetary wheel sets and a speed reduction sun wheel, and each motor is in meshing transmission with the speed reduction sun wheel through one speed reduction planetary wheel set;
and the wheel assembly is in transmission connection with the reduction sun gear.
As a preferred embodiment, the reduction planetary gear set includes:
the motor is in transmission connection with the input planet wheel;
an intermediate planet gear meshed with the input planet gear;
and the output planetary gear is in transmission connection with the intermediate planetary gear, and is meshed with the reduction sun gear.
As a preferred embodiment, the driving assembly further includes two shifting mechanisms, and each of the electric motors is in transmission connection with the reduction planetary gear set through one of the shifting mechanisms.
As a preferred embodiment, the wheel assembly comprises:
a wheel;
and the speed-changing mechanism is used for driving and connecting the speed-reducing sun wheel with the wheel.
As a preferred embodiment, the speed change mechanism includes:
a speed change ring gear;
the speed change sun gear is positioned inside the speed change annular gear and is in transmission connection with the speed reduction sun gear;
and the speed change planet wheels are meshed between the speed change inner gear ring and the speed change sun wheel and are in transmission connection with the wheels.
As a preferred embodiment, the transmission mechanism is integrally disposed inside the wheel.
In a preferred embodiment, the transmission further comprises an output shaft assembly, and the output shaft assembly is in transmission connection between the reduction sun gear and the speed change sun gear.
In a preferred embodiment, the output shaft assembly includes a first output shaft, a second output shaft, a third output shaft and two output flanges, the output flanges are connected between the second output shaft and the first output shaft and between the second output shaft and the third output shaft respectively, the first output shaft is in transmission connection with the reduction sun gear, and the third output shaft is in transmission connection with the speed change sun gear.
According to another object of the utility model, the utility model also provides a vehicle, which comprises the electric drive axle of the embodiment, and the vehicle further comprises a frame, wherein the electric drive axle is integrally fixed on the frame through a rubber suspension.
Compared with the prior art, the technical scheme has the following advantages:
the motor drives the reduction sun gear to rotate through the reduction planetary gear set, so that speed reduction is realized, the wheel assembly is driven to rotate, the motor is started according to vehicle required torque, mutual interference is avoided, for example, when the torque requirement is large, multiple motors can be selected to output, when the torque requirement is small, less motors can be selected to output, when one motor fails, the other motor correspondingly improves the torque, the risk of unpowered interruption is achieved, and safe and reliable operation of the vehicle is guaranteed. In addition, compared with the traditional electric drive axle, the electric drive axle has the advantages that two motors with smaller volumes can be adopted, and the advantages of two speed reduction planetary gear sets and a speed reduction sun gear are integrated by combining the speed reduction box assembly, so that the whole structure is more compact, the unsprung mass is effectively reduced, and the stability of a vehicle is facilitated.
The utility model is further described with reference to the following figures and examples.
Drawings
FIG. 1 is a schematic structural diagram of an electric drive axle according to the present invention;
in the figure: 100 drive assembly, 110 motor, 200 reduction box assembly, 210 reduction planetary gear set, 211 input planetary gear, 212 intermediate planetary gear, 213 output planetary gear, 220 reduction sun gear, 300 wheel assembly, 310 wheel, 320 speed change mechanism, 321 speed change ring gear, 322 speed change sun gear, 323 speed change planetary gear, 400 output shaft assembly, 410 first output shaft, 420 second output shaft, 430 third output shaft, 440 output flange.
Detailed Description
The following description is presented to disclose the utility model so as to enable any person skilled in the art to practice the utility model. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the utility model, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the utility model.
As shown in fig. 1, the electric drive axle includes:
a driving assembly 100, wherein the driving assembly 100 comprises two motors 110;
a reduction box assembly 200, wherein the reduction box assembly 200 includes two reduction planetary gear sets 210 and a reduction sun gear 220, and each of the motors 110 is in meshing transmission with the reduction sun gear 220 through one of the reduction planetary gear sets 210;
a wheel assembly 300, wherein the wheel assembly 300 is in driving connection with the reduction sun gear 220.
The motor 110 drives the reduction sun gear 220 to rotate through the reduction planetary gear set 210, so as to realize speed reduction and drive the wheel assembly 300 to rotate, wherein the motor 110 is started according to the torque required by the vehicle, and the speed reduction sun gear is not interfered with each other, for example, when the torque requirement is large, multiple motors can be selected to output, and when the torque requirement is small, less motors can be selected to output, and when one of the motors 110 fails, the other motor 110 correspondingly increases the torque, so that the risk of unpowered interruption is achieved, and the safe and reliable operation of the vehicle is ensured. In addition, compared with the conventional electric drive axle, the present embodiment can adopt two motors 110 with smaller volume, and combines the advantages of the reduction gearbox assembly 200 integrating two reduction planetary gear sets 210 and one reduction sun gear 220, so that the whole structure is more compact, the unsprung mass is effectively reduced, and the stability of the vehicle is facilitated.
As shown in fig. 1, the reduction planetary gear set 210 includes:
the input planetary gear 211, the motor 110 is in transmission connection with the input planetary gear 211;
an intermediate planet 212, the intermediate planet 212 being in mesh with the input planet 211;
an output planetary gear 213, the output planetary gear 213 is in transmission connection with the intermediate planetary gear 212, and the output planetary gear 213 is meshed with the reduction sun gear 220.
Specifically, input planet wheel 211 with middle planet wheel 212 keeps in same vertical direction, motor 110 is located input planet wheel 211 is coaxial, just motor 110 is located input planet wheel 211's left side, output planet wheel 213 with middle planet wheel 212 is coaxial, and is located middle planet wheel 212 right side, output planet wheel 213 with reduction sun gear 220 keeps in same vertical direction, and like this motor 110 with wheel assembly 300 arranges respectively the speed reduction box subassembly 200 left and right sides.
The two speed reduction planetary gear sets 210 are symmetrically arranged along the axis of the speed reduction box assembly 200, so that stability and reliability of the structure are ensured, and the two motors 110 are respectively located on the left side of the speed reduction box assembly 200, thereby facilitating management and control. In addition, by arranging two speed reduction planetary wheel sets 210, the speed reduction box assembly 200 is of a two-stage parallel gear structure, so that speed reduction is reliable, and the problem of motor differential matching is solved by adopting the advantages of mechanical differential and the like.
During operation, the motor 110 drives the input planet wheel 211 to rotate, the input planet wheel 211 drives the middle planet wheel 212 to rotate, and the middle planet wheel 212 drives the output planet wheel 213 to rotate, so that the output planet wheel 213 drives the wheel assembly 300 to rotate.
As shown in fig. 1, the driving assembly 100 further includes two shifting mechanisms, and each of the motors 110 is in transmission connection with the reduction planetary gear set 210 through one shifting mechanism. The motor 110 and the reduction planetary gear set 210 are decoupled and coupled by arranging the gear shifting mechanism, and when the motor 110 fails, the motor 110 and the reduction planetary gear set 210 can be decoupled by the gear shifting mechanism to improve the torque of the other motor 110, so that the risk of unpowered interruption is achieved, and the safe and reliable running of a vehicle is ensured.
As shown in fig. 1, the wheel assembly 300 includes:
a wheel 310;
the speed-changing mechanism 320 is used for driving the speed-reducing sun gear 220 to be connected with the wheels 310 through the speed-changing mechanism 320 so as to realize the speed-changing rotation of the wheels 310.
Specifically, the speed change mechanism 320 includes:
a speed change ring gear 321;
a speed change sun gear 322, wherein the speed change sun gear 322 is located inside the speed change ring gear 321, and the speed change sun gear 322 is in transmission connection with the reduction sun gear 220;
at least two speed change planetary wheels 323, wherein the speed change planetary wheels 323 are engaged between the speed change ring gear 321 and the speed change sun gear 322, and the two speed change planetary wheels 323 are in transmission connection with the wheels 310.
The speed-changing ring gear 321 is fixed, the speed-changing sun gear 322 and the reduction sun gear 220 rotate in the same direction, and the speed-changing planet gear 323 is driven by the speed-changing sun gear 322 to rotate and rotate circumferentially, so as to drive the wheel 310 to rotate.
Preferably, the transmission mechanism 320 is integrally disposed inside the wheel 310, so as to ensure the compact structure of the wheel assembly 300.
As shown in fig. 1, the electric transaxle further includes an output shaft assembly 400, wherein the output shaft assembly 400 is drivingly connected between the reduction sun gear 220 and the change sun gear 322 for transmitting torque.
Specifically, the output shaft assembly 400 includes a first output shaft 410, a second output shaft 420, a third output shaft 430 and two output flanges 440, the output flanges 440 are connected between the second output shaft 420 and the first output shaft 410 and the third output shaft 430, respectively, the first output shaft 410 is in transmission connection with the reduction sun gear 220, and the third output shaft 430 penetrates through the transmission ring gear 321 and is in transmission connection with the transmission sun gear 322.
To sum up, the motor 110 drives the reduction sun gear 220 to rotate through the reduction planetary gear set 210, so as to realize speed reduction and drive the wheel assembly 300 to rotate, wherein the motor 110 is started according to the torque required by the vehicle, without mutual interference, for example, when the torque requirement is large, multiple motor outputs can be selected, and when the torque requirement is small, fewer motor outputs can be selected, and when one of the motors 110 fails, the other motor 110 correspondingly increases the torque, so as to achieve the risk of unpowered interruption, and ensure the safe and reliable operation of the vehicle. In addition, compared with the conventional electric drive axle, the present embodiment can adopt two motors 110 with smaller volume, and combines the advantages of the reduction gearbox assembly 200 integrating two reduction planetary gear sets 210 and one reduction sun gear 220, so that the whole structure is more compact, the unsprung mass is effectively reduced, and the stability of the vehicle is facilitated.
The utility model further provides a vehicle which comprises the electric drive axle of the embodiment and a frame, wherein the electric drive axle is integrally fixed on the frame through a rubber suspension.
Because the vehicle adopts the electric drive axle of the embodiment, the vehicle refers to the embodiment by the beneficial effects brought by the electric drive axle, and in addition, the rubber suspension is adopted, so that the advantage of good shock absorption effect is achieved.
The above-mentioned embodiments are only for illustrating the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the same, and the scope of the present invention is not limited by the embodiments, i.e. all equivalent changes or modifications made in the spirit of the present invention are still within the scope of the present invention.
Claims (9)
1. An electric drive axle, comprising:
a drive assembly (100), said drive assembly (100) comprising two motors (110);
the speed reduction box assembly (200) comprises two speed reduction planetary gear sets (210) and a speed reduction sun gear (220), and each motor (110) is in meshing transmission with the speed reduction sun gear (220) through one speed reduction planetary gear set (210);
a wheel assembly (300), the wheel assembly (300) is in transmission connection with the reduction sun gear (220).
2. Electric transaxle of claim 1, wherein the reduction planetary gear set (210) comprises:
the input planetary gear (211), the motor (110) is in transmission connection with the input planetary gear (211);
an intermediate planet (212), the intermediate planet (212) being in mesh with the input planet (211);
an output planetary gear (213), the output planetary gear (213) is in transmission connection with the intermediate planetary gear (212), and the output planetary gear (213) is meshed with the reduction sun gear (220).
3. The electric transaxle of claim 1 wherein the drive assembly (100) further comprises two shift mechanisms, and each of the electric machines (110) is drivingly connected to the reduction planetary gear set (210) through a respective one of the shift mechanisms.
4. Electric drive axle according to claim 1, characterized in that said wheel assembly (300) comprises:
a wheel (310);
the speed change mechanism (320), the reduction sun gear (220) is in transmission connection with the wheels (310) through the speed change mechanism (320).
5. Electric drive axle according to claim 4, characterized in that the gear shift mechanism (320) comprises:
a speed change ring gear (321);
a speed change sun gear (322), wherein the speed change sun gear (322) is positioned inside the speed change ring gear (321), and the speed change sun gear (322) is in transmission connection with the speed reduction sun gear (220);
at least two speed change planetary wheels (323), wherein the speed change planetary wheels (323) are meshed between the speed change annular gear (321) and the speed change sun gear (322), and the two speed change planetary wheels (323) are in transmission connection with the wheels (310).
6. Electric drive axle according to claim 4, characterized in that the gear shift mechanism (320) is arranged integrally inside the wheel (310).
7. The electric transaxle of claim 5 further comprising an output shaft assembly (400), wherein output shaft assembly (400) is drivingly connected between reduction sun gear (220) and transmission sun gear (322).
8. The electric transaxle of claim 7 wherein the output shaft assembly (400) comprises a first output shaft (410), a second output shaft (420), a third output shaft (430) and two output flanges (440), the output flanges (440) are connected between the second output shaft (420) and the first output shaft (410) and the third output shaft (430), respectively, and the first output shaft (410) is drivingly connected to the reduction sun gear (220) and the third output shaft (430) is drivingly connected to the change sun gear (322).
9. A vehicle, characterized by comprising an electric drive axle according to any one of claims 1 to 8, and further comprising a frame to which the electric drive axle is integrally fixed by means of rubber suspension.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220415778.9U CN216733762U (en) | 2022-02-28 | 2022-02-28 | Electric drive axle and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220415778.9U CN216733762U (en) | 2022-02-28 | 2022-02-28 | Electric drive axle and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216733762U true CN216733762U (en) | 2022-06-14 |
Family
ID=81920448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220415778.9U Active CN216733762U (en) | 2022-02-28 | 2022-02-28 | Electric drive axle and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216733762U (en) |
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2022
- 2022-02-28 CN CN202220415778.9U patent/CN216733762U/en active Active
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