TW202006266A - Vehicle transmission, vehicle drive system and vehicle - Google Patents

Abstract

The present application discloses a vehicle transmission device, a vehicle drive system and a vehicle. The vehicle transmission device includes a speed reduction mechanism including: an input gear and an output ring gear, the input gear is adapted to be connected to a power source, and the output ring gear is used for outputting power. The first diverting gear set, the second diverting gear set, the input gear, the first diverting gear set and the second diverting gear set are all arranged in the output ring gear, and the first diverting gear set meshes with the input gear and the output ring gear, The splitter gear set meshes with the input gear and the output ring gear, and the input gear is spaced apart from the output ring gear. The first diverting gear set and the second diverting gear set can split the input input gear power, and then transmit the power to the output ring gear through the first diverting gear set and the second diverting gear set, thereby effectively reducing the local stress of the output ring gear.

Description

Vehicle transmission, vehicle drive system and vehicle

Cross-reference of related applications

This application requires the priority of the Chinese patent application with the application number 201810726606.1 filed on July 04, 2018.

The present application relates to the technical field of vehicle manufacturing, and in particular to a vehicle transmission device, a vehicle drive system having the vehicle transmission device, and a vehicle having the vehicle drive system.

The vehicle drive system of an automobile includes a vehicle transmission device. The vehicle transmission device is generally used to reduce the speed and increase the torque output by the power source, and further output it to the wheel hub. In the related art, the ring gear of the speed reduction mechanism of the vehicle transmission device is relatively concentrated, and the stiffness and strength of the ring gear are required to be high, and the distance between the input and output shafts is too small, and the speed ratio range of the speed reduction mechanism is small, which is not conducive to the selection and layout of the power source. .

This application aims to solve at least one of the technical problems existing in the prior art. To this end, an object of the present application is to propose a vehicle transmission device that can achieve a two-stage shunt, the output ring gear is more dispersed in force, and has low strength requirements.

A vehicle transmission device according to an embodiment of the present application includes a reduction mechanism including: an input gear and an output ring gear, the input gear is adapted to be connected to a power source, the output ring gear is used to output power, and the first split gear set , A second split gear set, the input gear, the first split gear set and the second split gear set are all arranged in the output ring gear, the first split gear set meshes with the input gear and the output ring gear, The second diverter gear set meshes with the input gear and the output ring gear, the input gear being spaced apart from the output ring gear.

According to the vehicle transmission device of the embodiment of the present application, the first split gear set and the second split gear set can split the input power of the input gear, and then transmit the power to the output teeth through the first split gear set and the second split gear set ring. Effectively reduce the local stress of the gear, extend the service life of the input gear and output ring gear, and improve the safety and stability of the vehicle transmission device. The radial size of the vehicle transmission device is small, the overall structure is compact and the load carrying capacity is high, and the speed ratio is adjustable The range is large.

According to the vehicle transmission device of an embodiment of the present application, the first split gear set and the second split gear set are arranged on both sides of a line connecting the center of the input gear and the center of the output ring gear, respectively.

According to the vehicle transmission device of an embodiment of the present application, the first split gear set and the second split gear set have the same structure, and the center of the first split gear set and the second split gear set with respect to the input gear is the same as the The line of the center of the output ring gear is symmetrically arranged.

According to the vehicle transmission device of an embodiment of the present application, the center of the input gear and the center of the output ring gear are respectively arranged on both sides of the line connecting the center of the first split gear set and the center of the second split gear set.

According to the vehicle transmission device of an embodiment of the present application, the first split gear set and the second split gear set each include a split gear.

According to the vehicle transmission device of an embodiment of the present application, the output gear ring has a larger diameter of the dividing circle than the dividing gear, and the input gear has a smaller dividing circle diameter than the dividing gear.

According to the vehicle transmission device of an embodiment of the present application, the diverter gear and the input gear are mounted on the same planet carrier.

According to the vehicle transmission device of an embodiment of the present application, the input gear, the output ring gear, the first split gear set, and the second split gear set are coplanar.

A vehicle transmission device according to an embodiment of the present application further includes a planetary gear mechanism including: a first element, a second element, and a third element, the first element is a sun gear, the second element, and the first element One of the three elements is a planet carrier and the other is a ring gear. The first element is connected to the output ring gear, the second element is used to fix the wheel hub, and the third element is fixed.

According to a vehicle transmission device of an embodiment of the present application, the speed reduction mechanism includes a first housing, the input gear, the output ring gear, and the diverter gear set are all disposed in the first housing, the third element and the first The housing is fixed.

According to a vehicle transmission device of an embodiment of the present application, the planetary gear mechanism includes a second housing, the first element, the second element, and the third element are all disposed in the second housing, the third element and the The second housing is fixed.

According to the vehicle transmission device of an embodiment of the present application, the third element is a ring gear, and the inner wall of the second housing forms a ring of internal teeth, and the internal teeth constitute the ring gear.

The vehicle transmission device according to an embodiment of the present application further includes: a transmission shaft connected to the output ring gear and connected to the first element.

This application also proposes a vehicle drive system.

A vehicle drive system according to an embodiment of the present application includes: a power source: the vehicle transmission device according to any one of the foregoing embodiments, the input gear is connected to the power source.

According to the vehicle driving system of an embodiment of the present application, the power source includes a wheel-side motor, the wheel-side motor is provided with an external spline, and the input gear is provided with an internal spline that cooperates with the external spline.

This application also proposes a vehicle.

A vehicle according to an embodiment of the present application includes the vehicle drive system of any of the above embodiments.

The vehicle drive system and vehicle described above have the same advantages as the above-mentioned vehicle transmission device over the prior art, and will not be repeated here.

Additional aspects and advantages of the present application will be partially given in the following description, and some will become apparent from the following description, or be learned through practice of the present application.

The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the drawings, in which the same or similar reference numerals indicate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application, and cannot be construed as limiting the present application.

The vehicle transmission device 100 according to the embodiment of the present application will be described below with reference to FIGS. 1 to 4.

As shown in FIGS. 1 to 4, the vehicle transmission device 100 according to the embodiment of the present application includes a speed reduction mechanism 1, the speed reduction mechanism 1 includes: an input gear 11, an output ring gear 13, a first split gear set 15, and a second split Gear set 17. Wherein, the input gear 11, the first split gear set 15, and the second split gear set 17 are all external gears, and the output ring gear 13 is an internal ring gear.

The input gear 11 is adapted to be connected to a power source 102. The power source 102 can input power to the vehicle transmission device 100 through the input gear 11, the output ring gear 13 is used to output power, and the vehicle transmission device 100 can pass power from the power source 102. The output ring gear 13 is output to the wheel hub 101 to drive the vehicle. Wherein, the power source 102 may include a drive motor, and the output end of the power source 102 may be meshed with the input gear 11 to input power to the vehicle transmission device 100 in the form of torque to achieve the speed reduction and torque increase effect of the vehicle transmission device 100 The output power of the power source 102 is adjustable, thereby adjusting the running speed of the vehicle, so that the vehicle can effectively adapt to the power requirements of different operating conditions. The vehicle transmission device 100 of the embodiment of the present application may be a wheel-side transmission device, and the corresponding power source 102 may be a wheel-side power source.

As shown in FIG. 3, the input gear 11, the first split gear set 15, and the second split gear set 17 are all arranged in the output ring gear 13, so that the overall size of the vehicle transmission device 100 is small, which facilitates the reduction of the vehicle transmission device The duty ratio of 100 also makes the internal structure of the vehicle transmission 100 more compact.

Among them, as shown in FIGS. 1 to 4, the first diverter gear set 15 meshes with the input gear 11 and the output ring gear 13, and the second diverter gear group 17 meshes with the input gear 11 and the output ring gear 13, which is the first The shunt gear set 15 and the second shunt gear set 17 all mesh with the input gear 11, the first shunt gear set 15 and the second shunt gear set 17 all mesh with the output ring gear 13, and the first shunt gear set 15 and the second shunt gear Both the gear set 17 and the output ring gear 13 are internally meshed, and the bearing capacity of the internal gear is high, so that the power transmission between the first and second splitter gear sets 15 and 17 and the output ring gear 13 is more stable. At the same time, the radial size is reduced, so that the vehicle transmission device 100 has a compact structure and a high carrying capacity.

As shown in FIG. 3, the center of the input gear 11 is lower than the center of the output ring gear 13, the center of the first split gear set 15, and the center of the second split gear set 17, and the input gear 11 is connected to the power source 102 by Therefore, when the power source 102 is a driving motor, the driving motor can be installed in a lower position, which greatly reduces the installation difficulty, and can be applied to large vehicles with a low floor, such as buses and buses.

The input gear 11 and the output ring gear 13 realize power transmission through the first split gear set 15 and the second split gear set 17, that is, the input gear 11 divides the power output by the power source 102 into two parts and transmits them to the first split gear set 15 respectively 2. The second split gear set 17, and then the first split gear set 15 and the second split gear set 17 are transmitted to the output ring gear 13 for power output.

As a result, the power between the input gear 11 and the output ring gear 13 is transmitted through multiple channels, which can reduce the local stress of the transmission ring gear 14, and accordingly, can reduce the strength requirements of the transmission ring gear 14, that is, can reduce the transmission ring gear 14 processing processes, which in turn reduces manufacturing costs. The local stress of the input gear 11 and the output ring gear 13 is small, so as to prevent the teeth of the input gear 11 and the output ring gear 13 from breaking and resulting in meshing failure, extend the service life of the input gear 11 and the output ring gear 13, and improve the safety of the vehicle transmission device 100 And stability, so that the vehicle drive system with the vehicle transmission device 100 can be effectively used for a long time.

In this way, the power of the power source 102 can be sequentially output through the input gear 11, the first split gear set 15 and the second split gear set 17, and the output ring gear 13, and gradually output to the wheel hub 101. The transmission path of the vehicle transmission device 100 is simple, which not only reduces the cost of the whole machine, but also reduces the transmission path of the gears, the transmission efficiency is high, and the heat is low. It also explains the surrounding lubrication and cooling system. The overall structure of the vehicle transmission device 100 is compact, and the power is divided. The gear has a small force, has a protective effect on the bearing, has a strong system stability, and has advantages in NVH performance.

The input gear 11 is spaced apart from the output ring gear 13 and the input gear 11 is spaced apart from the output gear ring 13 so that the size of the input gear 11 is adjustable. By adjusting the size of the input gear 11, the speed of the vehicle transmission 100 can be changed In addition, the relative position of the input gear 11 and the output ring gear 13 can also be adjusted, that is, the center distance between the input gear 11 and the output ring gear 13 can be adjusted, the accuracy requirements for the installation of the input gear 11 and the output ring gear 13 can be reduced, and the vehicle transmission device 100 can be saved The assembly time improves the assembly efficiency, and the adjustment space for the position of the input gear 11 is also very large, which is very advantageous for the adjustment of the input and output shaft spacing, which is beneficial to the selection of the power source and the surrounding arrangement of the vehicle transmission device 100.

According to the vehicle transmission device 100 of the embodiment of the present application, the first split gear set 15 and the second split gear set 17 can split the power input by the input gear 11, effectively reduce the local stress of the gear, and extend the input gear 11 and the output ring gear The service life of 13 improves the safety and stability of the vehicle transmission device 100. The radial size of the vehicle transmission device 100 is small, the overall structure is compact and the bearing capacity is high, and the speed ratio can be adjusted within a wide range.

In some embodiments, as shown in FIG. 3, the first split gear set 15 and the second split gear set 17 are arranged on both sides of the line connecting the center of the input gear 11 and the center of the output ring gear 13, respectively, so that The first split gear set 15 and the second split gear set 17 are respectively meshed with the positions of the input gear 11 or the output ring gear 13 on different sides, so that the force on both sides of the input gear 11 or the output ring gear 13 is uniform, and the input gear 11 is avoided Or the meshing stress of the output ring gear 13 is excessively concentrated to cause partial damage, extend the service life of the input gear 11 or the output ring gear 13, and improve the stability of the overall structure of the vehicle transmission device 100.

In some embodiments, the first split gear set 15 and the second split gear set 17 have the same structure, that is, the first split gear set 15 and the second split gear set 17 require the same materials and specific production processes to reduce processing And storage difficulty, greatly reducing production costs, and the first split gear set 15 and the second split gear set 17 are symmetrically arranged about the line connecting the center of the input gear 11 and the center of the output ring gear 13, the center of the input gear 11 and the output The connection line of the center of the ring gear 13 is in the up-down direction as shown in FIG. 3, and the first split gear set 15 and the second split gear set 17 are arranged symmetrically, making the overall structure of the vehicle transmission device 100 more regular and convenient for installation. In addition, the input gear 11 and the output ring gear 13 have balanced forces on both sides and a stable structure, which is convenient for long-term use.

In some embodiments, as shown in FIG. 3, the center of the input gear 11 and the center of the output ring gear 13 are respectively arranged on the line connecting the center of the first split gear set 15 and the center of the second split gear set 17 On both sides, so that the center of the input gear 11 and the center of the output ring gear 13 are spaced apart from each other, and the relative position of the center of the first split gear set 15 and the center of the second split gear set 17 can be adjusted to change the position of the input gear 11 The distance between the center and the center of the output ring gear 13 to adjust the meshing position of the input gear 11 or the output ring gear 13 with the first split gear set 15 and the second split gear set 17 provides the possibility of diversity in power source selection. This makes the layout of the overall structure of the vehicle transmission device 100 more flexible. Thus, the size selection range of the input gear 11 is large. It should be noted that the input gear 11 and the output end of the power source are connected by a spline. The input gear 11 with a larger size can still have a higher structural strength and rigidity after the spline is set, so that the input gear 11 can be normal transmission.

As shown in FIG. 3, the first split gear group 15 and the second split gear group 17 each include a split gear, that is, the first split gear group 15 includes a split gear, and the second split gear group 17 includes a split gear, The structures of the first split gear set 15 and the second split gear set 17 are simple, and the assembly precision requirements are low to facilitate installation, and the first split gear set 15 and the second split gear set 17 have fewer power transmission paths, high transfer efficiency, and low heat It also explains the surrounding lubrication and cooling system. The layout of the vehicle transmission device 100 is simple, the system stability is strong, and the NVH performance has advantages.

In some embodiments, as shown in FIG. 3, the diameter of the index circle of the output ring gear 13 is greater than the diameter of the index circle of the shunt gear, and the diameter of the input circle of the input gear 11 is smaller than the diameter of the shunt gear, ie The pitch circle diameter of the input gear 11 and the pitch circle diameter of the shunt gear are both smaller than the pitch circle diameter of the output ring gear 13. As shown in Figure 3, the input gear 11 and the output ring gear 13 are meshed with the split gear, that is, the linear speed of the input gear 11, the linear speed of the output ring gear 13, and the linear speed of the split gear are the same, but because The pitch circle diameter of the output ring gear 13, the pitch circle diameter of the shunt gear, and the pitch circle diameter of the input gear 11 are sequentially reduced, so that the angular velocity of the output ring gear 13 is smaller than the angular velocity of the shunt gear, and the rotation of the shunt gear The angular velocity of the wheel can be reduced.

In some embodiments, the split gear and the input gear 11 are mounted on the same planetary carrier 31, that is, the relative positions of the split gear and the input gear 11 are fixed, thereby ensuring that the split gear and the input gear 11 are stably engaged, so that the split gear and the input gear 11 The power transmission between them is stable and accurate.

In some embodiments, as shown in FIG. 1, FIG. 2 and FIG. 3, the input gear 11, the output ring gear 13, the first split gear set 15 and the second split gear set 17 are co-planar, that is, the input gear 11. The output ring gear 13, the first split gear set 15 and the second split gear set 17 are all located in the same plane, thereby greatly reducing the duty cycle of the vehicle transmission 100, making the overall gear reduction system The structure is more compact, and the power of the wheel side gear system is only transmitted in this plane, the force transmission is more accurate and stable, and the power loss is less.

The vehicle transmission device 100 according to the embodiment of the present application further includes a planetary gear mechanism 3, and the planetary gear mechanism 3 includes: a first element, a second element, and a third element, the first element is a sun gear 35, and the second element and the third element One of them is the planet carrier 31, the other is the ring gear 33, the first element is connected to the output ring gear 13, the second element is used to fix the wheel hub 101 to transmit power to the wheel hub 101, and the third element is fixed.

The planetary gear mechanism 3 may further include a plurality of planetary gears 32. The plurality of planetary gears 32 are pivotally connected to the planetary carrier 31. When the sun gear 35 of the plurality of planet gears 32 rotates, the sun gear 35 drives the corresponding planetary gear 32 rotates, and the planetary carrier 31 corresponding to the planetary gear 32 can selectively rotate. For example, when the ring gear 33 is fixed and the planetary carrier 31 is not fixed, the sun gear 35 is input, and the planetary gear 32 rotates and drives the planetary carrier 31 to output; when the planetary carrier 31 is fixed and the ring gear 33 is not fixed, the sun gear 35 is input, and the planetary gear 32 rotates and drives the output of the ring gear 33; when the planet carrier 31 and the ring gear 33 are not fixed, the sun gear 35 and the ring gear 33 are input, and the planet gear 32 rotates and drives the output of the planet carrier 31; when the planet carrier 31 and the ring gear 33 When neither is fixed, the sun gear 35 and the planet carrier 31 input, and the planet gear 32 rotates and drives the ring gear 33 to output.

The planetary gear mechanism 3 can transmit the power output from the reduction mechanism 1 to the wheel hub 101, wherein the first element can be used as the input element of the planetary gear mechanism 3, the second element is the output element of the planetary gear mechanism 3, the third The element is a transmission element between the first element and the second element, whereby the power of the output ring gear 13 is sequentially transmitted to the hub of the gear through the first element, the third element and the second element to realize power transmission and ensure vehicle transmission The device 100 can stably and effectively transmit the power output by the power source 102 to the hub of the gear, and then drive the gear to rotate to realize vehicle driving.

In the embodiment shown in FIG. 1, the second element is the planet carrier 31, and the third element is the ring gear 33, that is, the planet carrier 31 is the output element. In the embodiment shown in FIG. 4, the second element is the ring gear 33, and the third element is the planet carrier 31, that is, the ring gear 33 is the output element. As a result, the fixed form of the planet carrier 31, the ring gear 33, and the sun gear 35 is flexible, and the connection method is not single. The power transmission between the output ring gear 13 and the wheel hub 101 can be achieved, which has good flexibility and Multi-selectivity makes installation more convenient.

In some embodiments, the speed reduction mechanism 1 includes a first housing, and the input gear 11, the output ring gear 13, and the split gear set are all provided in the first housing. The first housing can be used for the input gear 11, the output ring gear 13, The operation of the shunt gear set plays a very protective role, so that the power transmission between the input gear 11, the output ring gear 13, and the shunt gear set is not affected by the environmental characteristics outside the first housing, ensuring that each inside the first housing The meshing of the components is stable, improving the integrity of the reduction mechanism 1 and the accuracy of the transmission. The third element is fixed with the first housing, so that the speed reduction mechanism 1 and the planetary gear mechanism 3 are effectively connected to ensure stable transmission of the speed reduction mechanism 1 and the planetary gear mechanism 3.

The planetary gear mechanism 3 includes a second housing, and the first element, the second element, and the third element are all disposed in the second housing, and the second housing can play a role in the operation of the first element, the second element, and the third element Very good protection, so that the power transmission between the first element, the second element and the third element is not affected by the environmental characteristics outside the second housing, and the first element, the second element and the third element are meshed stably, Improve the integrity of the planetary gear mechanism 3 and the accuracy of transmission. The third component is fixed to the second housing, and therefore, both the second housing and the first housing are connected and fixed to the third component. The reduction mechanism 1 and the planetary gear mechanism 3 are effectively and stably connected, and the stable transmission of the reduction mechanism 1 and the planetary gear mechanism 3 is ensured, which is convenient for realizing the deceleration and torque increase of the vehicle transmission device 100, and effectively transmitting the power output by the power source 102 to the wheels的轮101。 The wheel 101.

As shown in Figure 1, the third element is the ring gear 33, the first shell and the second shell are fixed to the ring gear 33, the inner wall of the second shell forms a ring of internal teeth, the internal teeth constitute the ring gear 33, the teeth The ring 33 meshes with the planetary gear mounted on the planetary carrier 31, which facilitates the transmission of the planetary gear mechanism 3.

As shown in FIGS. 1 and 4, the vehicle transmission device 100 further includes a transmission shaft 5, the transmission shaft 5 is connected to the output ring gear 13, and the transmission shaft 5 is connected to the first element, and the transmission shaft 5 is connected to the sun gear 35, That is, the two ends of the transmission shaft 5 are respectively connected to the output ring gear 13 and the sun gear 35 to transmit the power output from the reduction mechanism 1 to the planetary gear mechanism 3, wherein the transmission shaft 5 can be supported by the first housing or the first housing through bearings Two shells to reduce the friction force of the transmission shaft 5 during the transmission process, avoid excessive friction loss during the rotation process, improve the transmission efficiency of the vehicle transmission device 100, and ensure the accuracy of the transmission.

This application also proposes a vehicle drive system.

The vehicle driving system according to the embodiment of the present application includes: a power source 102 and the vehicle transmission device 100 of any one of the foregoing embodiments, the input gear 11 is connected to the power source 102, and the power source 102 can transmit the output power to the vehicle through the input gear 11 The transmission device 100, after being decelerated and increased in torque by the vehicle transmission device 100, is transmitted to the wheel hub 101 of the wheel to drive the wheel to rotate to realize the driving of the vehicle.

In some embodiments, the power source 102 includes a wheel motor, and the wheel motor is provided with an external spline. For example, the output shaft of the wheel motor is provided with an external spline, and the input gear 11 is provided with an internal spline. The spline fit makes the output shaft of the wheel motor and the input gear 11 relatively fixed in the circumferential direction, ensuring that the output torque of the wheel motor can be effectively splined to the input gear 11 and then transmitted to the wheels through the vehicle transmission device 100 The hub 101 is simple in connection and easy to implement.

This application also proposes a vehicle.

The vehicle according to the embodiments of the present application includes the vehicle drive system of any one of the above embodiments. The vehicle transmission device 100 has good safety and stability. The vehicle transmission device 100 has a small radial size, a compact overall structure, and a load-bearing capacity. High speed ratio and wide adjustable range help to improve the overall performance and improve the cost performance of the vehicle.

In the description of this application, "plural" means two or more.

In the description of this specification, reference to the descriptions of the terms "one embodiment", "some embodiments", "exemplary embodiments", "examples", "specific examples", or "some examples" is meant to incorporate the implementation The specific features, structures, materials, or characteristics described in the examples or examples are included in at least one embodiment or example of the present application. In this specification, the schematic expression of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more of the embodiments or examples.

Although the embodiments of the present application have been shown and described, those of ordinary skill in the art may understand that various changes, modifications, replacements, and variations can be made to these embodiments without departing from the principle and purpose of the present application. The scope of application is limited by the scope of patent application and its equivalent.

1‧‧‧Deceleration mechanism 3‧‧‧Planetary gear mechanism 5‧‧‧ drive shaft 11‧‧‧Input gear 13‧‧‧Output ring gear 15‧‧‧First shunt gear set 17‧‧‧Second shunt gear set 31‧‧‧Planet carrier 32‧‧‧Planet wheel 33‧‧‧Ring gear 35‧‧‧Sun Wheel 100‧‧‧Vehicle transmission 101‧‧‧wheel hub 102‧‧‧Power source

The above and/or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which: FIG. 1 is a schematic structural diagram of a vehicle transmission device according to an embodiment of the present application; FIG. 2 is a schematic view of the meshing of the deceleration mechanism of the vehicle transmission device according to an embodiment of the present application; FIG. 3 is a schematic structural diagram of a deceleration mechanism of a vehicle transmission device according to an embodiment of the present application; FIG. 4 is a schematic structural diagram of a vehicle transmission device according to another embodiment of the present application.

1‧‧‧Deceleration mechanism

3‧‧‧Planetary gear mechanism

5‧‧‧ drive shaft

11‧‧‧Input gear

13‧‧‧Output ring gear

15‧‧‧First shunt gear set

17‧‧‧Second shunt gear set

31‧‧‧Planet carrier

32‧‧‧Planet wheel

33‧‧‧Ring gear

35‧‧‧Sun Wheel

100‧‧‧Vehicle transmission

101‧‧‧wheel hub

102‧‧‧Power source

Claims (16)

A vehicle transmission device is characterized by including a speed reduction mechanism, the speed reduction mechanism includes: An input gear and an output ring gear, the input gear is adapted to be connected to a power source, and the output ring gear is used to output power; A first split gear set and a second split gear set, the input gear, the first split gear set and the second split gear set are all arranged in the output ring gear, the first split gear set and the input gear And the output ring gear meshes, the second split gear set meshes with the input gear and the output ring gear, the input gear is spaced from the output ring gear. The vehicle transmission device according to item 1 of the patent application scope, wherein the first split gear set and the second split gear set are arranged on both sides of the line connecting the center of the input gear and the center of the output ring gear, respectively . The vehicle transmission device as described in item 2 of the patent application range, wherein the first split gear set and the second split gear set have the same structure, and the first split gear set and the second split gear set are related to the input The line connecting the center of the gear and the center of the output ring gear is symmetrically arranged. The vehicle transmission device according to any one of claims 1 to 3, wherein the center of the input gear and the center of the output ring gear are respectively arranged at the center of the first split gear set and the second split Both sides of the line connecting the center of the gear set. The vehicle transmission device according to any one of claims 1 to 4, wherein the first split gear set and the second split gear set each include a split gear. The vehicle transmission device as described in item 5 of the patent application range, wherein the diameter of the dividing circle of the output ring gear is larger than the diameter of the dividing circle of the dividing gear, and the diameter of the dividing circle of the input gear is smaller than that of the dividing gear The diameter of the circle. The vehicle transmission device according to item 5 or 6 of the patent application scope, wherein the diverter gear and the input gear are mounted on the same planetary carrier. The vehicle transmission device according to any one of items 1 to 7 of the patent application range, wherein the input gear, the output ring gear, the first split gear set, and the second split gear set are coplanarly disposed. The vehicle transmission device according to any one of items 1 to 8 of the patent application scope, which further includes a planetary gear mechanism including: a first element, a second element, and a third Element, the first element is a sun gear, one of the second element and the third element is a planet carrier, the other is a ring gear, the first element is connected to the output ring gear, the second element is used The third element is fixed to the wheel hub. The vehicle transmission device as described in item 9 of the patent application scope, wherein the reduction mechanism includes a first housing, the input gear, the output ring gear, and the diverter gear set are all provided in the first housing, the first The three components are fixed to the first housing. The vehicle transmission device according to item 9 or 10 of the patent application scope, wherein the planetary gear mechanism includes a second housing, and the first element, the second element, and the third element are all provided in the first In the two casings, the third element is fixed with the second casing. The vehicle driving system according to item 11 of the patent application scope, wherein the third element is a ring gear, and the inner wall of the second housing forms a ring of internal teeth, and the internal teeth constitute the ring gear. The vehicle transmission device according to any one of items 9 to 12 of the patent application range, further comprising: a transmission shaft connected to the output ring gear and connected to the first element. A vehicle drive system is characterized by comprising: A power source; As in the vehicle transmission device described in any one of claims 1 to 13, the input gear is connected to the power source. The vehicle drive system according to item 14 of the patent application scope, wherein the power source includes a wheel-side motor, the wheel-side motor is provided with an external spline, and the input gear is provided with an internal spline that cooperates with the external spline . A vehicle characterized by comprising the vehicle drive system as described in item 14 or item 15 of the patent application.

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