CN115958946A - Drive axle for vehicle and vehicle having same - Google Patents

Abstract

The invention discloses a drive axle for a vehicle and the vehicle with the same, comprising: an axle housing; the first motor is arranged in the axle housing and is provided with a first motor shaft; the second motor is arranged in the axle housing and is provided with a second motor shaft; the planetary reduction mechanism is arranged on the axle housing and comprises a sun gear, a plurality of first planetary gears, a gear ring and a planet carrier, the sun gear is in transmission connection with a first motor shaft and a second motor shaft respectively, the gear ring is sleeved on the sun gear, the first planetary gears are rotatably connected with the planet carrier, and the first planetary gears are meshed with external teeth of the sun gear and internal teeth of the gear ring respectively; the gear reduction mechanism is arranged on the axle housing, and the input end of the gear reduction mechanism is connected to the planet carrier in a transmission manner; and the differential mechanism is arranged on the axle housing and is in transmission connection with the output end of the gear reduction mechanism. The drive axle for the vehicle has the advantages of good power performance, low energy consumption, compact structure, large transmission ratio and the like.

Description

Drive axle for vehicle and vehicle having same

technical field

The invention relates to the technical field of vehicles, in particular to a drive axle for a vehicle and a vehicle with the same.

Background technique

The drive axle used for vehicles in the related art usually drives the vehicle through a motor, but due to the unreasonable layout of the motor of the drive axle in the related art, the volume of the drive axle is relatively large, and the space occupied by the drive axle as a whole on the chassis is relatively large. If it is too large, it is not convenient for layout and installation. Moreover, the drive axle in the related art has problems such as insufficient torque capacity and poor dynamic performance, and the energy consumption of the vehicle is relatively high.

Contents of the invention

The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present invention is to provide a drive axle for vehicles, which has the advantages of good dynamic performance, low energy consumption, compact structure and large transmission ratio.

According to the invention, a vehicle is also proposed having the above-described transaxle for a vehicle.

In order to achieve the above object, according to the first embodiment of the present invention, a drive axle for a vehicle is proposed, including: an axle housing; a first motor, the first motor is arranged in the axle housing and has a first A motor shaft; a second motor, the second motor is arranged in the axle housing and has a second motor shaft; a planetary reduction mechanism, the planetary reduction mechanism is arranged in the axle housing and includes a sun gear, a plurality of first A planetary gear, a ring gear and a planet carrier, the sun gear is connected to the first motor shaft and the second motor shaft respectively, the ring gear is sleeved on the sun gear, and the first planetary gear is rotatable ground connected to the planet carrier, the first planetary gear meshes with the external teeth of the sun gear and the internal teeth of the ring gear respectively; a gear reduction mechanism, the gear reduction mechanism is arranged on the axle housing, the The input end of the gear reduction mechanism is drivingly connected to the planet carrier; the differential is arranged on the axle housing and is drivingly connected to the output end of the gear reducing mechanism.

The drive axle for vehicles according to the embodiment of the present invention has the advantages of good dynamic performance, low energy consumption, compact structure and large transmission ratio.

According to some embodiments of the present invention, the central axes of the first motor shaft, the second motor shaft and the sun gear are coincidently arranged.

According to some embodiments of the present invention, the first motor shaft and the second motor shaft are drive-connected to opposite axial sides of the sun gear respectively.

According to some embodiments of the present invention, the second motor is located on the side of the planet carrier facing away from the sun gear, and the side of the planet carrier facing away from the sun gear is provided with a transmission shaft, the The transmission shaft is vacantly sleeved on the second motor shaft and extends in a direction away from the sun gear; the gear reduction mechanism includes a driving gear and a driven gear, and the driving gear is in transmission connection with the transmission shaft, so The driven gear meshes with the driving gear and is in transmission connection with the differential; wherein, the transmission ratio between the driving gear and the driven gear is greater than 1.

According to some embodiments of the present invention, the transmission shaft and the second motor are arranged at intervals in the axial direction of the transmission shaft.

According to some embodiments of the present invention, the driving gears are multiple and include a first driving gear and a second driving gear, and the first driving gear and the second driving gear are spaced on the transmission shaft and along the The transmission shaft is arranged at intervals in the axial direction, and the driven gears are multiple and include a first driven gear and a second driven gear, the first driven gear meshes with the first driving gear, so The second driven gear meshes with the second driving gear, and the first driven gear and the second driven gear are respectively connected to the differential; the gear reduction mechanism also includes a synchronizer, The synchronizer is slidably sleeved on the transmission shaft and located between the first driving gear and the second driving gear, and the synchronizer can be selectively connected with the first driving gear and the The transmission connection of the second driving gear; wherein, the transmission ratio of the first driving gear and the first driven gear is not equal to the transmission ratio of the second driving gear and the second driven gear.

According to some embodiments of the present invention, the differential includes: a first half-shaft and a second half-shaft, the central axis of the first half-shaft coincides with the central axis of the second half-shaft and is adapted to be different from The wheel transmission connection; the housing, the housing is respectively connected with the first driven gear and the second driven gear; the first side gear, the first side gear is located in the housing and connected with the first half-shaft in transmission; the second half-shaft gear is located in the housing and connected with the second half-shaft in transmission; a plurality of second planetary gears, a plurality of the The second planetary gear is located in the housing, and the second planetary gear meshes with the first side gear and the second side gear respectively, and the second planetary gear rotates around the first side gear The central axis revolves and rotates around its own rotation axis, and the rotation axis of the second planetary wheel is perpendicular to the central axis of the first half shaft.

According to some embodiments of the present invention, the first driven gear and the second driven gear are integrally formed with the housing.

According to some embodiments of the present invention, the drive axle for vehicles further includes: a wheel end reduction mechanism, the wheel end reduction mechanism is arranged on the axle housing, the input end of the wheel end reduction mechanism is connected to the differential The output end of the speed reducer is in transmission connection, and the output end of the wheel-end reduction mechanism is suitable for transmission connection with the wheel; wherein, the first motor, the second motor, the planetary reduction mechanism and the gear reduction mechanism are adjacent On the front side of the axle housing, the wheel end reduction mechanism is adjacent to the rear of the axle housing.

According to the embodiment of the second aspect of the present invention, a vehicle is provided, including the driving axle for the vehicle according to the embodiment of the first aspect of the present invention.

The vehicle according to the embodiment of the second aspect of the present invention has the advantages of good dynamic performance, low energy consumption, compact structure and large transmission ratio by using the drive axle for vehicles according to the embodiment of the first aspect of the present invention.

Additional aspects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present invention will become apparent and comprehensible from the description of the embodiments in conjunction with the following drawings, wherein:

FIG. 1 is a schematic diagram of a transaxle for a vehicle according to an embodiment of the present invention.

Reference signs:

drive axle 1,

The first motor 100, the first motor shaft 110,

The second motor 200, the second motor shaft 210,

Planetary reduction mechanism 300, sun gear 310, first planetary gear 320, ring gear 330, planet carrier 340, transmission shaft 350,

Gear reduction mechanism 400, driving gear 410, first driving gear 411, second driving gear 412, driven gear 420, first driven gear 421, second driven gear 422, synchronizer 430,

The differential 500 , the housing 510 , the first side gear 520 , the second side gear 530 , the second planetary gear 540 , the first side shaft 600 , the second side shaft 610 , and the wheels 700 .

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Rear", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Axial", "Radial", "Circumferential" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, use a specific Azimuth configuration and operation, therefore, should not be construed as limiting the invention.

In the description of the present invention, "first feature" and "second feature" may include one or more of these features.

In the description of the present invention, "plurality" means two or more, and "several" means one or more.

A transaxle 1 for a vehicle according to an embodiment of the present invention will be described below with reference to the drawings.

As shown in FIG. 1 , a transaxle 1 for a vehicle according to an embodiment of the present invention includes an axle housing, a first motor 100 , a second motor 200 , a planetary reduction mechanism 300 , a gear reduction mechanism 400 and a differential 500 .

The first motor 100 is located in the axle housing and has a first motor shaft 110, the second motor 200 is located in the axle housing and has a second motor shaft 210, the planetary reduction mechanism 300 is located in the axle housing and includes a sun gear 310, a plurality of The first planetary gear 320, the ring gear 330 and the planetary carrier 340, the sun gear 310 are respectively connected to the first motor shaft 110 and the second motor shaft 210, the ring gear 330 is sleeved on the sun gear 310, and the first planetary gear 320 is rotatable The first planetary gear 320 meshes with the external teeth of the sun gear 310 and the internal teeth of the ring gear 330 respectively. The gear reduction mechanism 400 is arranged on the axle housing, and the input end of the gear reduction mechanism 400 is connected to the planet carrier by transmission. 340 , the differential 500 is disposed on the axle housing and connected to the output end of the gear reduction mechanism 400 through transmission.

Wherein, the driving axle 1 for a vehicle in the embodiment of the present invention may be an electric driving axle.

According to the drive axle 1 for vehicles according to the embodiment of the present invention, the first motor 100 is arranged in the axle housing and has the first motor shaft 110 , the second motor 200 is arranged in the axle housing and has the second motor shaft 210 , In addition, the sun gear 310 of the planetary reduction mechanism 300 is connected to the first motor shaft 110 and the second motor shaft 210 respectively, the ring gear 330 is sleeved on the sun gear 310, the first planetary gear 320 is rotatably connected to the planet carrier 340, and the second A planetary gear 320 meshes with the external teeth of the sun gear 310 and the internal teeth of the ring gear 330 respectively, so that the first motor 100 and the second motor 200 can jointly drive the sun gear 310 of the planetary reduction mechanism 300 to rotate, and then reduce The mechanism 300 transmits the power of the first motor 100 and the second motor 200 to the outside, that is to say, the driving axle 1 of the embodiment of the present invention can simultaneously output power through the two motors, effectively solving the insufficient torque capacity of a single motor problem, it is beneficial to improve the driving performance of the drive axle 1.

Moreover, by connecting the first motor 100 and the second motor 200 to the same sun gear 310 of a planetary reduction mechanism 300 at the same time, compared with the drive axle in the related art where multiple motors are respectively connected to a planetary reduction mechanism, this The structural arrangement of the first motor 100, the second motor 200 and the planetary reduction mechanism 300 in the drive axle 1 of the embodiment of the invention is more compact, and the occupied space is also smaller, not only does not greatly increase the volume of the drive axle 1, but also facilitates The first motor 100 and the second motor 200 are in transmission connection with the planetary reduction mechanism 300 at the same time.

In addition, by connecting the sun gear 310 of the planetary reduction mechanism 300 to the first motor shaft 110 of the first motor 100 and the second motor shaft 210 of the second motor 200 at the same time, and the ring gear 330 can be fixed with the axle housing, the planetary reduction mechanism 300 transmits power outward through the planet carrier 340, and the transmission ratio of the planetary reduction mechanism 300 is large, which can greatly increase the transmission ratio of the first motor 100 and the second motor 200 to the wheel 700, so that the output speed of the first motor 100 and the second motor The output speed of the 200 is greatly reduced, and the torque of the first motor 100 and the torque of the second motor 200 can be greatly increased, so that the first motor 100 and the second motor 200 can generate a larger Torque to increase the driving force of the drive axle 1, which is beneficial to reduce the energy consumption of the vehicle.

In addition, the gear reduction mechanism 400 is arranged on the axle housing, the input end of the gear reduction mechanism 400 is connected to the planet carrier 340 by transmission, and the differential 500 is arranged on the axle casing and is connected by transmission to the output end of the gear reduction mechanism 400. In this way, the gear reduction mechanism 400 can further reduce the output speed of the planetary reduction mechanism 300, further increase the torque of the drive axle 1, so that the power performance of the drive axle 1 is better, and the vehicle can take into account power and low energy consumption, and poor The transmission 500 can transmit the power of the output end of the gear reduction mechanism 400 to the wheels 700 on the left and right sides of the vehicle, and perform differential transmission to the wheels 700 on both sides, so that the wheels 700 on both sides can rotate at a differential speed, so that the vehicle can turn , and prevent the vehicle from slipping on the potholes to ensure that the vehicle can run normally.

Thus, the drive axle 1 for vehicles according to the embodiment of the present invention has the advantages of good dynamic performance, low energy consumption, compact structure and large transmission ratio.

In some specific embodiments of the present invention, as shown in FIG. 1 , the central axes of the first motor shaft 110 , the second motor shaft 210 and the sun gear 310 are coincidently arranged.

For example, the central axis of the first motor shaft 110, the central axis of the second motor shaft 210 and the central axis of the sun gear 310 coincide and can extend along the left and right directions of the vehicle, which is convenient for the first motor 100 and the second motor 200 to pass through. The planetary reduction mechanism 300 transmits power outwards, the transmission connection between the first motor shaft 110 and the second motor shaft 210 and the sun gear 310 is more convenient, and the first motor 100, the second motor 200 and the planetary reduction mechanism 300 are in the front and rear direction of the vehicle. The occupied space on the vehicle is small, so that the structure of the drive axle 1 in the front and rear direction of the vehicle is more compact, so as to facilitate the layout and installation of the drive axle 1 on the vehicle chassis.

In some specific embodiments of the present invention, as shown in FIG. 1 , the first motor shaft 110 and the second motor shaft 210 are drive-connected to the opposite axial sides of the sun gear 310 respectively, that is to say, the first motor 100 can It is arranged on one side of the axial direction of the sun gear 310, and the second motor 200 can be arranged on the other side of the axial direction of the sun gear 310. In this way, the first motor 100 and the second motor 200 are relatively close to the sun gear 310, and the first There is no positional interference between the motor shaft 110 and the second motor shaft 210 , which facilitates the transmission connection between the first motor shaft 110 and the second motor shaft 210 and the sun gear 310 , making the layout and installation more convenient.

In some specific embodiments of the present invention, the second motor 200 is located on the side of the planet carrier 340 facing away from the sun gear 310, and the side of the planet carrier 340 facing away from the sun gear 310 is provided with a transmission shaft 350, and the transmission shaft 350 It is hollowly sleeved on the second motor shaft 210 and extends away from the sun gear 310, so that the first motor 100 and the second motor 200 can jointly drive the sun gear 310 to rotate, and the sun gear 310 is driven by a plurality of first planetary gears 320 The planetary carrier 340 rotates, and the planetary carrier 340 is sleeved on the second motor shaft 210 through the transmission shaft 350, so that the planetary carrier 340 can rotate relative to the second motor shaft 210, thereby realizing the contact between the planetary carrier 340 and the second motor shaft 210. Rotating at a differential speed, the planetary reduction mechanism 300 can reduce the output speeds of the first motor 100 and the second motor 200 , which is beneficial to increase the torque of the drive axle 1 .

Moreover, the planet carrier 340 is vacantly sleeved on the second motor shaft 210 through the transmission shaft rod 350, so that the planetary reduction mechanism 300, the first motor shaft 110 and the second motor shaft 210 can be coaxially arranged, avoiding the first motor shaft 110 or The position of the second motor shaft 210 interferes with the planetary reduction mechanism 300, the layout is more reasonable, and the second motor shaft 210 can also support the transmission shaft 350, so that the rotation of the transmission shaft 350 is more stable, and the rotation of the planet carrier 340 is more stable. Stable, the power output of the planetary reduction mechanism 300 is more stable.

In addition, the gear reduction mechanism 400 includes a driving gear 410 and a driven gear 420, the driving gear 410 is in transmission connection with the transmission shaft 350, the driven gear 420 is meshed with the driving gear 410 and is in transmission connection with the differential 500, wherein the driving gear 410 The transmission ratio with the driven gear 420 is greater than 1.

Wherein, the rotation axis of the driving gear 410 and the rotation axis of the driven gear 420 are parallel and do not overlap.

For example, the driving gear 410 is meshed with the driven gear 420 and the axis of rotation of the driving gear 410 and the axis of rotation of the driven gear 420 are arranged at intervals along the front and rear direction of the vehicle, which not only facilitates the power transmission of the driving gear 410 and the driven gear 420 , and the driving gear 410 and the driven gear 420 can be arranged along the front and rear direction of the vehicle, avoiding the excessive size of the driving gear 410 and the driven gear 420 in the left and right direction of the vehicle, which is conducive to reducing the gear reduction mechanism 400 in the vehicle. The size in the left and right directions avoids the excessive size of the drive axle 1 in the left and right directions, which is convenient for installation.

In addition, the transmission ratio of the driving gear 410 and the driven gear 420 is greater than 1. In this way, the speed of the driven gear 420 can be lower than the speed of the output end of the planetary reduction mechanism 300, which further reduces the output speed of the drive axle 1, which is beneficial to improve the speed of the drive axle. 1 torque, which in turn can increase the driving force of the transaxle 1.

In some specific embodiments of the present invention, as shown in FIG. 1 , the transmission shaft 350 and the second motor 200 are arranged at intervals in the axial direction of the transmission shaft 350 . One side of the second motor 200 extends toward the direction close to the second motor 200, and the extension length of the transmission shaft 350 along the axial direction of the second motor shaft 210 is shorter than the axial length of the second motor shaft 210, so that the transmission The shaft 350 can be sleeved on the second motor shaft 210 and spaced from the second motor 200 , avoiding positional interference between the transmission shaft 350 and the body of the second motor 200 , so that the transmission shaft 350 can be positioned relative to the second motor 200 Make a turn.

In some specific embodiments of the present invention, there are multiple driving gears 410 including a first driving gear 411 and a second driving gear 412 , and the gear reduction mechanism 400 further includes a synchronizer 430 .

The first driving gear 411 and the second driving gear 412 are sleeved on the transmission shaft 350 and arranged at intervals along the axial direction of the transmission shaft 350. The driven gear 420 is multiple and includes the first driven gear 421 and the second driven gear. gear 422, the first driven gear 421 is meshed with the first driving gear 411, the second driven gear 422 is meshed with the second driving gear 412, and the first driven gear 421 and the second driven gear 422 are respectively connected with the differential 500 Transmission connection, the synchronizer 430 is slidably sleeved on the transmission shaft 350 and located between the first driving gear 411 and the second driving gear 412 , the synchronizer 430 can be selectively connected with the first driving gear 411 and the second driving gear 412 Drive connection. Wherein, the transmission ratio of the first driving gear 411 and the first driven gear 421 is not equal to the transmission ratio of the second driving gear 412 and the second driven gear 422 .

That is to say, the gear reduction mechanism 400 has two gears. When the synchronizer 430 is in transmission connection with the first driving gear 411, the planetary reduction mechanism 300 can transmit power to the The differential 500 further drives the wheels 700 to rotate, and when the synchronizer 430 is in driving connection with the second driving gear 412, the planetary reduction mechanism 300 can transmit power to the differential through the second driving gear 412 and the second driven gear 422 500, and then drive the wheel 700 to rotate, and the transmission ratio of the first driving gear 411 and the first driven gear 421 is different from the transmission ratio of the second driving gear 412 and the second driven gear 422, the driver can according to the actual situation of the vehicle The gear of the gear reduction mechanism 400 is switched under load conditions to realize different transmission ratios of the drive axle 1 , so as to take into account the driving performance of the drive axle 1 and reduce the energy consumption of the vehicle.

Moreover, the first driving gear 411 and the second driving gear 412 are spaced on the transmission shaft 350 and are respectively arranged on opposite sides of the synchronizer 430, so that the synchronizer 430 can move toward the direction close to the first driving gear 411, so that The synchronizer 430 and the first driving gear 411 are connected in transmission and disconnect the transmission of the synchronizer 430 and the second driving gear 412. Similarly, the synchronizer 430 can move towards the direction close to the second driving gear 412, so that the synchronizer 430 and the second driving gear 412 can move. The transmission connection of the second driving gear 412 and the disconnection of the transmission of the synchronizer 430 and the first driving gear 411 , the switching method of the synchronizer 430 is simple and easy to implement.

In some specific embodiments of the present invention, as shown in FIG. 1 , the differential 500 includes a first half shaft 600 , a second half shaft 610 , a housing 510 , a first side gear 520 , and a second side gear 530 and a plurality of second planetary gears 540 .

The central axis of the first half shaft 600 coincides with the central axis of the second half shaft 610 and is suitable for transmission connection with different wheels 700. The housing 510 is connected with the first driven gear 421 and the second driven gear 422 respectively. The side gear 520 is located in the housing 510 and is in transmission connection with the first side shaft 600 , the second side gear 530 is located in the housing 510 and is in transmission connection with the second side shaft 610 , a plurality of second planetary gears 540 are located in the housing body 510, and the second planetary gear 540 meshes with the first side gear 520 and the second side gear 530 respectively. The second planetary gear 540 revolves around the central axis of the first side shaft 600 and rotates around its own rotation axis. The rotation axes of the two planetary wheels are perpendicular to the central axis of the first half shaft 600 .

Specifically, when the synchronizer 430 is in transmission connection with the first driving gear 411, the first driving gear 411 drives the first driven gear 421 to rotate, and the first driven gear 421 drives a plurality of second planetary gears 540 around the first half shaft 600 revolves around the central axis, and when the second planetary gear 540 only revolves around the central axis of the first half shaft 600, the rotational speeds of the first side gear 520 and the second side gear 530 are the same, and the first side gear 520 passes The first axle shaft 600 drives a wheel 700 to rotate, and the second axle gear 530 drives the other wheel 700 to rotate at the same rotational speed through the second axle shaft 610; When revolving and rotating around its own rotation axis, the rotational speeds of the first side gear 520 and the second side gear 530 are different. The first side gear 520 drives a wheel 700 to rotate through the first side shaft 600 , and the second side gear 530 drives the other wheel 700 to rotate at different rotational speeds through the second half shaft 610 , so that differential rotation of the left and right wheels 700 can be realized.

In addition, when the synchronizer 430 is in drive connection with the second driving gear 412, the second driving gear 412 drives the second driven gear 422 to rotate, and the second driven gear 422 drives the first driven gear 421 to rotate through the housing 510, and The first driven gear 421 and the second driven gear 422 rotate synchronously, thus, the second driven gear 422 can drive the first driven gear 421 to drive a plurality of second planetary gears 540 around the central axis of the first half shaft 600 and when the second planetary gear 540 only revolves around the central axis of the first half shaft 600, the rotational speeds of the first side gear 520 and the second side gear 530 are the same, and the first side gear 520 passes through the first half shaft 600 drives one wheel 700 to rotate, and the second side gear 530 drives the other wheel 700 to rotate at the same speed through the second side shaft 610; When the axis of rotation rotates, the rotational speeds of the first side gear 520 and the second side gear 530 are different. The first side gear 520 drives a wheel 700 to rotate through the first side shaft 600 , and the second side gear 530 drives a wheel 700 to rotate through the second side gear 530 . The half shaft 610 drives the other wheel 700 to rotate at different speeds, so that the left and right wheels 700 can rotate at a differential speed.

Thus, the driver can switch the gears of the gear reduction mechanism 400 by connecting the synchronizer 430 to the first driving gear 411 or the second driving gear 412, and the gear reduction mechanism 400 can pass through different gears. The differential 500 performs differential transmission to the wheels 700 on the left and right sides, so that the vehicle can turn normally and prevent the vehicle from slipping.

In some specific embodiments of the present invention, as shown in FIG. 1 , the first driven gear 421 and the second driven gear 422 are integrally formed with the housing 510, so that the first driven gear 421 and the second driven gear 422 and the housing 510 have a higher connection strength, and the first driven gear 421, the second driven gear 422 and the housing 510 can keep rotating synchronously, so that whether the synchronizer 430 is in transmission connection with the first driving gear 411 or The transmission connection with the second driving gear 412, the gear reduction mechanism 400 can transmit power to the differential 500, and then drive the wheels 700 to rotate through the differential 500, so that the vehicle can run normally.

In some specific embodiments of the present invention, the drive axle 1 for the vehicle further includes a wheel end reduction mechanism (not shown in the figure).

The wheel end reduction mechanism is arranged on the axle housing, the input end of the wheel end reduction mechanism is in transmission connection with the output end of the differential 500 , and the output end of the wheel end reduction mechanism is suitable for transmission connection with the wheels 700 . In this way, the planetary reduction mechanism 300, the gear reduction mechanism 400 and the wheel end reduction mechanism can cooperate to realize the three-stage reduction transmission of the drive axle 1, so that the transmission ratio of the drive axle 1 is larger, and the dynamic performance of the vehicle is improved more effectively and the cruising range is improved. higher.

In addition, the first motor 100, the second motor 200, the planetary reduction mechanism 300 and the gear reduction mechanism 400 are adjacent to the front side of the axle housing, and the wheel end reduction mechanism is adjacent to the rear of the axle housing, so that the planetary reduction mechanism 300 and the gear The reduction mechanism 400 and the wheel end reduction mechanism are arranged along the front and rear direction of the vehicle, so that the weight distribution of the drive axle 1 is more uniform, the layout and installation are convenient, and the structure of the drive axle 1 is simplified. The planetary reduction mechanism 300, the gear reduction mechanism 400 and the wheel The end reduction mechanism can have a certain interval in the axle housing to avoid the layout of the planetary reduction mechanism 300, the gear reduction mechanism 400 and the wheel end reduction mechanism being too crowded. Position interference, on the other hand, facilitates the maintenance of the planetary reduction mechanism 300, the gear reduction mechanism 400 and the wheel end reduction mechanism, and the disassembly and assembly are more convenient.

A vehicle according to an embodiment of the present invention, which includes the transaxle 1 for a vehicle according to the above-described embodiment of the present invention, will be described below with reference to the drawings.

The vehicle according to the embodiment of the present invention has the advantages of good dynamic performance, low energy consumption, compact structure and large transmission ratio by using the drive axle 1 for the vehicle according to the above-mentioned embodiment of the present invention.

Other configurations and operations of the driving axle 1 for a vehicle according to the embodiment of the present invention and the vehicle having the same are known to those skilled in the art, and will not be described in detail here.

In the description of this specification, descriptions with reference to the terms "specific embodiment", "specific example" and the like mean that specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or embodiment of the present invention. example. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications, substitutions and modifications can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the invention is defined by the claims and their equivalents.

Claims (10)

1. A drive axle for a vehicle, comprising: axle housing; a first motor, the first motor is arranged in the axle housing and has a first motor shaft; a second motor, the second motor is arranged in the axle housing and has a second motor shaft; A planetary reduction mechanism, the planetary reduction mechanism is arranged on the axle housing and includes a sun gear, a plurality of first planetary gears, a ring gear and a planet carrier, and the sun gear is connected to the first motor shaft and the second motor shaft respectively. The motor shaft is connected by transmission, the ring gear is sleeved on the sun gear, the first planetary gear is rotatably connected to the planet carrier, and the first planetary gear is respectively connected to the external teeth of the sun gear and the The internal tooth meshing of the ring gear; A gear reduction mechanism, the gear reduction mechanism is arranged on the axle housing, and the input end of the gear reduction mechanism is connected to the planet carrier through transmission; A differential, the differential is arranged on the axle housing and connected to the output end of the gear reduction mechanism through transmission. 2 . The drive axle for vehicles according to claim 1 , wherein the first motor shaft, the second motor shaft and the central axes of the sun gear are coincidently arranged. 3 . 3 . The drive axle for vehicles according to claim 1 , wherein the first motor shaft and the second motor shaft are drive-connected to opposite axial sides of the sun gear respectively. 4 . 4. The drive axle for vehicles according to claim 1, wherein the second motor is located on the side of the planet carrier facing away from the sun gear, and the side of the planet carrier facing away from the sun gear is One side of the wheel is provided with a transmission shaft, and the transmission shaft is vacantly sleeved on the second motor shaft and extends in a direction away from the sun gear; The gear reduction mechanism includes a driving gear and a driven gear, the driving gear is in transmission connection with the transmission shaft, and the driven gear meshes with the driving gear and is in transmission connection with the differential; Wherein, the transmission ratio of the driving gear and the driven gear is greater than 1. 5 . The drive axle for vehicles according to claim 4 , characterized in that, the transmission shaft and the second motor are arranged at intervals in the axial direction of the transmission shaft. 6 . 6. The driving axle for vehicles according to claim 4, characterized in that, the driving gears are multiple and include a first driving gear and a second driving gear, and the first driving gear and the second driving gear The driving gear is spaced on the transmission shaft and arranged at intervals along the axial direction of the transmission shaft. The driven gears are multiple and include a first driven gear and a second driven gear. The first driven gear The driven gear meshes with the first driving gear, the second driven gear meshes with the second driving gear, and the first driven gear and the second driven gear are respectively connected to the differential transmission. connect; The gear reduction mechanism further includes a synchronizer, the synchronizer is slidably sleeved on the transmission shaft and is located between the first driving gear and the second driving gear, and the synchronizer can be selectively is in transmission connection with the first driving gear and the second driving gear; Wherein, the transmission ratio between the first driving gear and the first driven gear is not equal to the transmission ratio between the second driving gear and the second driven gear. 7. The transaxle for a vehicle according to claim 6, wherein the differential comprises: The first half shaft and the second half shaft, the central axis of the first half shaft coincides with the central axis of the second half shaft and is suitable for transmission connection with different wheels; a casing, the casing is respectively connected with the first driven gear and the second driven gear; a first side gear, the first side gear is located in the housing and is in transmission connection with the first side shaft; a second half shaft gear, the second half shaft gear is located in the housing and is in transmission connection with the second half shaft; A plurality of second planetary gears, the plurality of second planetary gears are located in the housing, and the second planetary gears are respectively meshed with the first side gear and the second side gear, the first The two planetary gears revolve around the central axis of the first semi-shaft and rotate around their own rotation axis, and the rotational axis of the second planetary gear is perpendicular to the central axis of the first semi-shaft. 8 . The drive axle for a vehicle according to claim 7 , wherein the first driven gear and the second driven gear are integrally formed with the housing. 9. The drive axle for a vehicle according to claim 1, further comprising: A wheel-end reduction mechanism, the wheel-end reduction mechanism is arranged on the axle housing, the input end of the wheel-end reduction mechanism is connected to the output end of the differential, and the output end of the wheel-end reduction mechanism is suitable for Connected with the wheel drive; Wherein, the first motor, the second motor, the planetary reduction mechanism and the gear reduction mechanism are adjacent to the front side of the axle housing, and the wheel end reduction mechanism is adjacent to the rear of the axle housing. 10. A vehicle, characterized by comprising the drive axle for the vehicle according to any one of claims 1-9.

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