Drive axle and vehicle
By setting the left and right half-axis gears and planetary gear mechanisms in the differential housing, combined with the selective connection of the engager, the problem of vehicle torque loss and high cost of single motor driving torque vector control is solved, and the vector active control and maneuverability of the vehicle is improved.
Patent Information
- Application Number
- CN202422912006.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2025-08-26
- Estimated Expiration
- 2034-11-28
AI Technical Summary
In the prior art, a single-motor-driven reducer has a problem of vehicle torque loss in torque vector control. The dual-motor system is costly and it is difficult to realize active vector control of the vehicle.
The left and right wheels are driven by the left and right half-axis gears in the differential housing, and the differential housing is selectively connected to the adapter through the left and right planetary gear mechanisms to achieve good steering of the vehicle during steering and improve handling and stability.
The vector active control of the vehicle is realized, the steering, acceleration and stability of the vehicle are improved, and insufficient acceleration steering is avoided.
Smart Images
Figure CN223266623U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of vehicles, in particular to a drive axle and a vehicle. Background Art
[0002] Currently, more and more vehicles are using active torque vectoring control to improve their driving performance. However, the torque vectoring control in a single-motor-driven reducer is based on ESP (Electronic Stability Program) to adjust the yaw torque to control the braking force, which will cause the vehicle's torque to be lost. If a dual-motor system is used to control the wheels individually, this will result in high costs, making it difficult to achieve active vector control of the vehicle. Utility Model Content
[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present invention is to provide a drive axle that not only ensures driving force but also generates yaw torque, thereby enabling active vector control of the vehicle and thereby improving the vehicle's steering and maneuverability.
[0004] The utility model further provides a vehicle.
[0005] According to the drive axle of the present utility model, it includes: a differential, a left half-shaft, a right half-shaft, a left planetary gear mechanism, a right planetary gear mechanism and a coupling. The differential includes: a differential case, a left half-shaft gear and a right half-shaft gear. The left half-shaft gear and the right half-shaft gear are respectively arranged in the differential case. The left half-shaft is connected to the left half-shaft gear, and the right half-shaft is connected to the right half-shaft gear. The left planetary gear mechanism selectively connects the differential case to the left half-shaft, and the right planetary gear mechanism selectively connects the differential case to the right half-shaft. The coupling is arranged between the left planetary gear mechanism and the right planetary gear mechanism and the corresponding left half-shaft and right half-shaft.
[0006] According to the drive axle of the present invention, by arranging the left half-shaft gear and the right half-shaft gear in the differential housing, the left half-shaft gear is connected to the left half-shaft, thereby driving the left wheel, and the right half-shaft gear is connected to the right half-shaft, thereby driving the right wheel, the left planetary gear mechanism selectively connects the differential housing to the left half-shaft through a coupling, and the right planetary gear mechanism selectively connects the differential housing to the right half-shaft through a coupling. This arrangement can enable the vehicle to obtain good and direct steering performance when turning, thereby improving the vehicle's maneuverability, acceleration and stability, and further enabling the vehicle to achieve active vector control and avoid acceleration understeer.
[0007] In some examples of the present invention, the left planetary gear mechanism and the right planetary gear mechanism both include: a sun gear, a planetary gear, a ring gear and a planet carrier, the sun gear is the output end, the planet carrier is the input end, the ring gear is the fixed end, the planetary gear is rotatably arranged on the planet carrier and meshed between the sun gear and the ring gear; wherein the input end is connected to the differential case, the output end is connected to the coupling, and the coupling is selectively connected to the corresponding left half shaft and the right half shaft.
[0008] In some examples of the present invention, the clutch includes a clutch.
[0009] In some examples of the present invention, the sun gear is idle on the corresponding left half-shaft and the right half-shaft.
[0010] In some examples of the present invention, the differential also includes: a differential planetary gear shaft and a differential planetary gear, the differential planetary gear shaft is fixedly connected to the differential housing, the differential planetary gear is loosely mounted on the differential planetary gear shaft, and the differential planetary gear is meshed with the left half-shaft gear and the right half-shaft gear.
[0011] In some examples of the present invention, the drive axle further includes: a reducer, the reducer is in driving cooperation with the differential housing, the reducer includes a reducer housing, and the ring gear is fixed to the reducer housing.
[0012] In some examples of the present invention, the planet carrier is fixed to the differential housing; or the planet carrier and the differential housing are integrally formed.
[0013] In some examples of the present invention, the drive axle further includes: a drive motor and a reducer, wherein the reducer is respectively coupled with the drive motor and the differential housing.
[0014] In some examples of the present invention, the left planetary gear mechanism and the right planetary gear mechanism are symmetrically arranged with respect to the center of the differential.
[0015] The vehicle according to the present invention includes: the drive axle described above.
[0016] Compared with the prior art, the present invention adopts a method of arranging a left half-shaft gear and a right half-shaft gear in the differential housing, and the left half-shaft gear is connected to the left half-shaft, thereby driving the left wheel, and the right half-shaft gear is connected to the right half-shaft, thereby driving the right wheel. The left planetary gear mechanism selectively connects the differential housing to the left half-shaft through a coupling, and the right planetary gear mechanism selectively connects the differential housing to the right half-shaft through a coupling. This arrangement can enable the vehicle to obtain good and direct steering performance when turning, thereby improving the vehicle's maneuverability, acceleration and stability, and further enabling the vehicle to achieve active vector control and avoid acceleration understeer.
[0017] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:
[0019] Figure 1 It is a schematic diagram of a drive axle according to an embodiment of the utility model;
[0020] Figure 2 It is a partial principle diagram of a drive axle according to an embodiment of the utility model.
[0021] Reference numerals:
[0022] 100. Drive axle;
[0023] 10. Differential; 11. Differential case; 12. Left half-shaft gear; 13. Right half-shaft gear; 14. Differential planetary gear shaft; 15. Differential planetary gear; 20. Left half-shaft; 30. Right half-shaft; 40. Left planetary gear mechanism; 50. Right planetary gear mechanism; 61. Sun gear; 62. Planetary gears; 63. Ring gear; 64. Planet carrier; 65. Coupling; 70. Reducer; 80. Drive motor; 91. Left wheel; 92. Right wheel. DETAILED DESCRIPTION
[0024] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.
[0025] Reference below Figure 1 and Figure 2 A drive axle 100 according to an embodiment of the present invention is described. The drive axle 100 is applied to a vehicle.
[0026] like Figure 1 and Figure 2As shown, the drive axle 100 according to the present invention includes: a differential 10, a left half-shaft 20, a right half-shaft 30, a left planetary gear mechanism 40, a right planetary gear mechanism 50 and a coupling 65. The differential 10 includes: a differential case 11, a left half-shaft gear 12 and a right half-shaft gear 13. The left half-shaft gear 12 and the right half-shaft gear 13 are respectively arranged in the differential case 11. The left half-shaft 20 is connected to the left half-shaft gear 12, and the right half-shaft 30 is connected to the right half-shaft gear 13. The left planetary gear mechanism 40 selectively connects the differential case 11 to the left half-shaft 20, and the right planetary gear mechanism 50 selectively connects the differential case 11 to the right half-shaft 30. The coupling 65 is arranged between the left planetary gear mechanism 40 and the right planetary gear mechanism 50 and the corresponding left half-shaft 20 and right half-shaft 30.
[0027] It can be understood that the differential 10, the left half-shaft 20, the right half-shaft 30, the left planetary gear structure 40, the right planetary gear mechanism 50 and the differential 65 constitute the main structure of the drive axle 100, and the differential case 11, the left half-shaft gear 12 and the right half-shaft gear 13 constitute the main structure of the differential 10. The differential case 11 is respectively connected to the left planetary gear mechanism 40 and the right planetary gear mechanism 50, and the left half-shaft 20 is selectively connected to the left planetary gear mechanism 40 through the coupling 65. The right half-shaft 30 is selectively connected to the right planetary gear mechanism 50 through the coupling 65, thereby ensuring the effectiveness of power transmission and enabling the vehicle to obtain good and direct steering when turning, thereby improving the vehicle's maneuverability, acceleration and stability, and thus enabling the vehicle to achieve active vector control and avoid acceleration understeer.
[0028] Therefore, by arranging the left half-shaft gear 12 and the right half-shaft gear 13 in the differential housing 11, the left half-shaft gear 12 is connected to the left half-shaft 20, so as to drive the left wheel 91, and the right half-shaft gear 13 is connected to the right half-shaft 30, so as to drive the right wheel 92. The left planetary gear mechanism 40 selectively connects the differential housing 11 to the left half-shaft 20 through the coupling 65, and the right planetary gear mechanism 50 selectively connects the differential housing 11 to the right half-shaft 30 through the coupling 65. This arrangement can enable the vehicle to obtain good and direct steering performance when turning, thereby improving the vehicle's maneuverability, acceleration and stability, and further enabling the vehicle to achieve active vector control and avoid acceleration understeer.
[0029] Among them, such as Figure 2As shown, the left planetary gear mechanism 40 and the right planetary gear mechanism 50 both include: a sun gear 61, planetary gears 62, a ring gear 63 and a planet carrier 64, wherein the sun gear 61 is the output end, the planet carrier 64 is the input end, the ring gear 63 is the fixed end, and the planetary gear 62 is rotatably disposed on the planet carrier 64 and meshed between the sun gear 61 and the ring gear 63; wherein the input end is connected to the differential case 11, and the output end is connected to the coupling 65, and the coupling 65 is selectively connected to the corresponding left half shaft 20 and right half shaft 30.
[0030] It can be understood that the sun gear 61, the planet gears 62, the ring gear 63 and the planet carrier 64 constitute the main body of the left planetary gear mechanism 40 and the right planetary gear mechanism 50. The planet gears 62 and the planet carrier 64 are in transmission connection. The planet gears 62 are located between the sun gear 61 and the ring gear 63. This arrangement allows the power of the planet carrier 64 to be transmitted to the sun gear 61 and the ring gear 63 through the planet gears 62. The planet carrier 64 is the input end, the sun gear 61 is the output end, and the ring gear 63 is the fixed end. The sun gear 61 is loosely mounted on the corresponding left half shaft 20 and right half shaft 30. The configuration allows the power of the differential case 11 to be transmitted to the planetary carrier 64, which is output by the sun gear 61 and then transmitted to the left half-shaft 20 or the right half-shaft 30 through the sliding friction of the coupling 65. When the vehicle needs to turn, the sliding friction of the corresponding coupling 65 is controlled according to demand, and the torque can be increased on the side with higher wheel speed. This configuration allows the vehicle to obtain good and direct steering performance when turning, thereby improving the vehicle's maneuverability, acceleration and stability, and further enabling the vehicle to achieve active vector control and avoid acceleration understeer.
[0031] The coupling 65 is located between the output end and the left half-shaft 20, and between the output end and the right half-shaft 30. For example, the coupling 65 is located between the sun gear 61 and the left half-shaft 20, and between the sun gear 61 and the right half-shaft 30. This arrangement enables the coupling 65 to adjust the power between the sun gear 61 and the left half-shaft 20 or the right half-shaft 30, so that the power of the differential housing 11 can be transmitted to the planetary carrier 64, the planetary gear 62, the sun gear 61, the coupling 65 and the left half-shaft 20 or the right half-shaft 30 in sequence, thereby enabling the vehicle to achieve active vector control and avoid acceleration understeer.
[0032] For example, the clutch 65 includes a clutch that can slip or disconnect power transmission. When the clutch is slipping, the power of the differential case 11 is transmitted to the left half-shaft 20 or the right half-shaft 30 via the left planetary gear mechanism 40 or the right planetary gear mechanism 50 and the clutch 65. When the clutch is disconnected, the power of the differential case 11 is no longer transmitted to the left planetary gear mechanism 40 or the right planetary gear mechanism 50, but is instead transmitted to the left half-shaft 20 and the right half-shaft 30 via the planetary gears, the left half-shaft gear 12, and the right half-shaft gear 13 within the differential 10. The slipping of the clutch can enable the vehicle to achieve good and direct steering performance when turning, thereby improving the vehicle's maneuverability, acceleration, and stability, thereby enabling the vehicle to achieve active vector control and avoid understeer during acceleration. The disconnection of the clutch ensures that the vehicle travels straight.
[0033] In particular, Figure 2 As shown, the planet carrier 64 is the input end, the sun gear 61 is the output end, the ring gear 63 is the fixed end, and the sun gear 61 is loosely mounted on the corresponding left half shaft 20 and right half shaft 30 .
[0034] It can be understood that the planetary carrier 64 is the input end, the sun gear 61 is the output end, the ring gear 63 is the fixed end, and the sun gear 61 is loosely mounted on the corresponding left half-shaft 20 and right half-shaft 30. This arrangement allows the power of the differential case 11 to be transmitted to the planetary carrier 64, which is output by the sun gear 61 and transmits power. The torque is then increased through the sliding friction of the coupling 65, and the increased torque is transmitted to the left half-shaft 20 or the right half-shaft 30. When the vehicle needs to turn, the corresponding coupling 65 sliding friction is controlled according to demand, and the torque can be increased on the side with higher wheel speed. This arrangement allows the vehicle to obtain good and direct steering when turning, thereby improving the vehicle's maneuverability, acceleration and stability, and further enabling the vehicle to achieve active vector control and avoid acceleration understeer.
[0035] In addition, if Figure 2 As shown, the differential 10 further includes: a differential planetary gear shaft 14 and a differential planetary gear 15. The differential planetary gear shaft 14 is fixedly connected to the differential housing 11. The differential planetary gear 15 is loosely sleeved on the differential planetary gear shaft 14. The differential planetary gear 15 is meshed with the left half-shaft gear 12 and the right half-shaft gear 13.
[0036] That is to say, the power of the differential case 11 is transmitted to the differential planetary gear shaft 14, and the differential planetary gear 15 is connected to the differential planetary gear shaft 14 in a sleeve transmission connection, so that the power of the differential case 11 can be transmitted to the differential planetary gear 15 through the differential planetary gear shaft 14, and the left half-shaft gear 12 is connected between the differential planetary gear 15 and the left half-shaft 20, and the right half-shaft gear 13 is connected between the differential planetary gear 15 and the right half-shaft 30, so that the power of the differential case 11 can be transmitted to the differential planetary gear 15 through the differential planetary gear shaft 14, and the power of the differential planetary gear 15 is transmitted to the left half-shaft 20 and the right half-shaft gear 13 through the left half-shaft gear 12 and the right half-shaft gear 13. Shaft 30, the left half-shaft 20 drives the left wheel 91 to rotate, and the right half-shaft 30 drives the right wheel 92 to rotate, thereby realizing the turning function of the vehicle, and also enabling the power of the differential housing 11 to be transmitted to the planetary carrier 64, which is output by the sun gear 61 and transmitted, and then the torque is increased by the sliding friction of the coupling 65, and the increased torque is transmitted to the left half-shaft 20 or the right half-shaft 30. When the vehicle needs to turn, the corresponding coupling 65 sliding friction is controlled according to demand, and the torque can be increased on the side with higher wheel speed. This setting can enable the vehicle to obtain good and direct steering when turning, thereby improving the vehicle's maneuverability, acceleration and stability, and thus enabling the vehicle to achieve vector active control and avoid acceleration understeer.
[0037] In addition, if Figure 1 As shown, the drive axle 100 further includes: a reducer 70 , which is in driving cooperation with the differential housing 11 , and the reducer 70 includes a reducer housing, and the ring gear 63 is fixed to the reducer housing.
[0038] In particular, if Figure 2 As shown, the planet carrier 64 is fixed to the differential housing 11, or the planet carrier 64 and the differential housing 11 are integrally formed. This arrangement allows the power transmitted to the differential housing 11 to be directly transmitted to the planet carrier 64, which can reduce the number of connectors between components, simplify the structure, save materials, and reduce costs.
[0039] In addition, Figure 1 As shown, the drive axle 100 further includes a drive motor 80 and a reducer 70. The reducer 70 is respectively coupled to the drive motor 80 and the differential housing 11. It is understood that the reducer 70 is located between the drive motor 80 and the differential housing 11. The power of the drive motor 80 is transmitted to the reducer 70, and the reducer 70 then transmits the power of different speed ratios to the differential housing 11.
[0040] In addition, if Figure 1 and Figure 2As shown, the left planetary gear mechanism 40 and the right planetary gear mechanism 50 are symmetrically arranged about the center of the differential 10. This arrangement allows a set of differential housings 11 to be connected to the left planetary gear mechanism 40 and the right planetary gear mechanism 50, respectively. Therefore, the power transmitted to the differential housing 11 is transmitted to the left planetary gear mechanism 40 and the right planetary gear mechanism 50, respectively. The left planetary gear mechanism 40 and the right planetary gear mechanism 50 are controlled separately according to the vehicle steering requirements for vector control.
[0041] Specifically, when the vehicle is traveling straight, the torque vectoring control does not work, and the drive motor 80 transmits power to the differential case 11 through the reducer 70, and then transmits it to the left half-shaft 20 and the right half-shaft 30 through the differential case 11, the differential planetary gear shaft 14, the differential planetary gear 15, the left half-shaft gear 12, and the right half-shaft gear 13. The left half-shaft 20 is connected to the left wheel 91, and the right half-shaft 30 is connected to the right wheel 92. At this time, the coupling 65 is disconnected, and the left planetary gear mechanism 40 and the right planetary gear mechanism 50 are idling.
[0042] When the vehicle turns left, torque vectoring controls the right wheel 92, and the drive motor 80 transmits power to the differential case 11 through the reducer 70. At this time, the coupling 65 in the left planetary gear mechanism 40 is disconnected, the left planetary gear mechanism 40 is idling, and the coupling 65 in the right planetary gear mechanism 50 is sliding. Part of the power transmitted to the differential case 11 is transmitted to the left half-shaft 20 and the right half-shaft 30 through the differential planetary gear shaft 14, the differential planetary gear 15, the left half-shaft gear 12, and the right half-shaft gear 13, and the other part of the power is transmitted to the right half-shaft 30 through the planetary gear carrier 64, the planetary gears 62, the sun gear 61 and the coupling 65 in the right planetary gear mechanism 50, thereby increasing torque. The right half-shaft 30 then drives the right wheel 92 to rotate, thereby increasing the torque of the right wheel 92.
[0043] When the vehicle turns right, torque vectoring controls the left wheel 91, and the drive motor 80 transmits power to the differential case 11 through the reducer 70. At this time, the coupling 65 in the right planetary gear structure is disconnected, the right planetary gear mechanism 50 idles, and the coupling 65 in the left planetary gear mechanism 40 slips. Part of the power transmitted to the differential case 11 is transmitted to the left half-shaft 20 and the right half-shaft 30 through the differential planetary gear shaft 14, the differential planetary gear 15, the left half-shaft gear 12, and the right half-shaft gear 13. The other part of the power is transmitted to the left half-shaft 30 through the planetary gear carrier 64, the planetary gear 62, the sun gear 61 and the coupling 65 in the left planetary gear mechanism 40, thereby increasing torque. The left half-shaft 30 then drives the left wheel 91 to rotate, thereby increasing the torque of the left wheel 91.
[0044] A vehicle according to the present invention includes the drive axle 100 of the above embodiment. A left sideshaft gear 12 and a right sideshaft gear 13 are disposed within a differential housing 11. The left sideshaft gear 12 is connected to the left sideshaft 20 to drive the left wheel 91, and the right sideshaft gear 13 is connected to the right sideshaft 30 to drive the right wheel 92. A left planetary gear mechanism 40 selectively connects the differential housing 11 to the left sideshaft 20 via a coupling 65, and a right planetary gear mechanism 50 selectively connects the differential housing 11 to the right sideshaft 30 via a coupling 65. This arrangement enables the vehicle to achieve good and direct steering performance during steering, thereby improving the vehicle's maneuverability, acceleration, and stability, thereby enabling the vehicle to achieve active vector control and avoid acceleration understeer.
[0045] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.
[0046] In the description of the present invention, "first feature" and "second feature" may include one or more of the features. In the description of the present invention, "plurality" means two or more. In the description of the present invention, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may also include the first and second features not being in direct contact but being in contact via another feature between them. In the description of the present invention, the first feature being "above", "above" and "above" the second feature includes the first feature being directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.
[0047] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.
[0048] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.
Claims
1. A drive axle (100), characterized in that: include: A differential (10), the differential (10) comprising: a differential housing (11), a left half-shaft gear (12), and a right half-shaft gear (13), the left half-shaft gear (12) and the right half-shaft gear (13) being respectively arranged in the differential housing (11); A left half shaft (20) and a right half shaft (30), wherein the left half shaft (20) is connected to the left half shaft gear (12), and the right half shaft (30) is connected to the right half shaft gear (13); a left planetary gear mechanism (40) and a right planetary gear mechanism (50), wherein the left planetary gear mechanism (40) selectively connects the differential case (11) to the left half-shaft (20), and the right planetary gear mechanism (50) selectively connects the differential case (11) to the right half-shaft (30); A coupling (65) is provided between the left planetary gear mechanism (40) and the right planetary gear mechanism (50) and the corresponding left half shaft (20) and the right half shaft (30).
2. The drive axle (100) according to claim 1, characterized in that: The left planetary gear mechanism (40) and the right planetary gear mechanism (50) both include: A sun gear (61), the sun gear (61) being an output end; A planet carrier (64), the planet carrier (64) being an input end; A gear ring (63), wherein the gear ring (63) is a fixed end; a planetary gear (62), the planetary gear (62) being rotatably disposed on the planetary carrier (64) and meshing between the sun gear (61) and the ring gear (63); The input end is connected to the differential housing (11), the output end is connected to the coupling (65), and the coupling (65) is selectively connected to the corresponding left half shaft (20) and the right half shaft (30).
3. The drive axle (100) according to claim 1, characterized in that: The adapter (65) includes a clutch.
4. The drive axle (100) according to claim 2, characterized in that: The sun gear (61) is loosely mounted on the corresponding left half shaft (20) and the right half shaft (30).
5. The drive axle (100) according to claim 2, characterized in that: The differential (10) further comprises: A differential planetary gear shaft (14), wherein the differential planetary gear shaft (14) is fixedly connected to the differential housing (11); A differential planetary gear (15), wherein the differential planetary gear (15) is loosely sleeved on the differential planetary gear shaft (14), and the differential planetary gear (15) is meshed with the left half-shaft gear (12) and the right half-shaft gear (13).
6. The drive axle (100) according to claim 2, characterized in that: Also includes: A reducer (70), the reducer (70) is in transmission cooperation with the differential housing (11), the reducer (70) comprises a reducer housing, and the ring gear (63) is fixed to the reducer housing.
7. The drive axle (100) according to claim 2, characterized in that: The planet carrier (64) is fixed to the differential housing (11); or The planet carrier (64) and the differential housing (11) are integrally formed.
8. The drive axle (100) according to claim 1, characterized in that: Also includes: Drive motor (80); A speed reducer (70), the speed reducer (70) is respectively coupled to the drive motor (80) and the differential housing (11) for transmission.
9. The drive axle (100) according to claim 1, characterized in that: The left planetary gear mechanism (40) and the right planetary gear mechanism (50) are symmetrically arranged about the center of the differential (10).
10. A vehicle, characterized in that: include: The drive axle (100) according to any one of claims 1 to 9.