CN221162190U

CN221162190U - Powertrain and vehicle

Info

Publication number: CN221162190U
Application number: CN202323659127.8U
Authority: CN
Inventors: 施国飞; 张安伟; 周文太; 王宝智; 吴为理; 卢刚
Original assignee: Guangzhou Automobile Group Co Ltd
Current assignee: Guangzhou Automobile Group Co Ltd
Priority date: 2023-12-29
Filing date: 2023-12-29
Publication date: 2024-06-18
Anticipated expiration: 2033-12-29

Abstract

The application discloses a power assembly and a vehicle. Wherein, the power assembly includes: the driving motor is used for providing power; one axial side of the sun gear is connected with a driving motor; the planetary gear set is arranged at the radial position of the sun gear and comprises a first planetary gear and a second planetary gear, the first planetary gear is meshed with the sun gear, and the first planetary gear and the second planetary gear are axially connected in series; the fixed shell is at least arranged around the second planet wheel; the gear ring is arranged on one side of the fixed shell facing the second planet wheel, the second planet wheel is meshed with the gear ring, a liquid storage space is formed at the bottom end of the fixed shell and used for storing lubricating liquid, and part of the structure of the gear ring is positioned in the liquid storage space. The technical scheme of the application can reduce the structure of the transmission system and save the space of the position.

Description

Powertrain and vehicle

Technical Field

The application belongs to the technical field of vehicles, and particularly relates to a power assembly and a vehicle.

Background

On a vehicle transmission layout, one or two gear sets are usually located at a relatively high position, and in order to meet the lubrication requirement of the gear sets at the high position, more oil filling is required to be added, and oil injection is adopted for lubrication. This results in a more complex construction of the transmission system, taking up more space in position.

Disclosure of utility model

The application aims to provide a power assembly and a vehicle, which can effectively reduce the structure of a transmission system and save the space of a position.

Other features and advantages of the application will be apparent from the following detailed description, or may be learned by the practice of the application.

According to one aspect of an embodiment of the present application, there is provided a powertrain comprising:

a driving motor for providing power;

the sun gear is connected with the driving motor at one axial side;

The planetary gear set is arranged at the radial position of the sun gear and comprises a first planetary gear and a second planetary gear, the first planetary gear is meshed with the sun gear, and the first planetary gear and the second planetary gear are axially connected in series;

the fixed shell is at least arranged around the second planet wheel; and

The gear ring is arranged on one side of the fixed shell facing the second planet gear, the second planet gear is meshed with the gear ring, a liquid storage space is formed at the bottom end of the fixed shell and used for storing lubricating liquid, and part of the structure of the gear ring is located in the liquid storage space.

In one aspect, a plurality of planetary gear sets are provided, and the plurality of planetary gear sets are distributed at equal intervals along the radial position of the sun gear.

In one aspect, the powertrain further includes a first axle and a second axle, the first axle and the second axle being disposed opposite one another, one end of the first axle facing away from the second axle, and one end of the second axle facing away from the first axle being respectively configured to connect wheels;

The power assembly further comprises a differential mechanism, the differential mechanism is in driving connection with the planetary gear set, and the differential mechanism is arranged between the first axle and the second axle.

In one aspect, the differential comprises a planet carrier and a differential wheel set, wherein a carrier space is formed by surrounding the planet carrier, the planetary wheel set is arranged on the planet carrier, and the differential wheel set is arranged in the carrier space;

The differential wheel set comprises a first differential wheel and a second differential wheel, the first differential wheel and the second differential wheel are respectively connected with two opposite sides of the planet carrier, and the first differential wheel and the second differential wheel are meshed;

The power assembly further comprises a first output wheel and a second output wheel, the first output wheel is meshed with the first differential wheel, the first output wheel is arranged on the first axle and coaxially arranged with the first axle, the second output wheel is meshed with the second differential wheel, and the second output wheel is arranged on the second axle and coaxially arranged with the second axle.

In one aspect, the differential gear set is provided in plurality, and the differential gear sets are distributed at equal intervals around the first axle.

In one aspect, the power assembly further comprises a transmission shaft, one end of the transmission shaft is connected with the sun gear, the other end of the transmission shaft is connected with the driving motor, and the transmission shaft is sleeved on the first axle.

In one aspect, the axial direction of the sun gear is parallel to the axial direction of the first axle;

The power assembly further comprises a first driving gear and a second driving gear, the first driving gear is connected with the planetary gear set, the second driving gear is arranged on the second axle, and the first driving gear is meshed with the second driving gear.

In one aspect, the powertrain further comprises an engine, a generator, and a shock absorber, the engine being connected to the generator, the shock absorber being disposed between the engine and the generator;

the power assembly further comprises a power line, one end of the power line is connected with the generator, and the other end of the power line is connected with the driving motor.

In one aspect, the power assembly further comprises a first driving wheel and a second driving wheel, wherein the first driving wheel is arranged on one side, away from the engine, of the shock absorber and is connected with the shock absorber, the second driving wheel is in driving connection with the generator, and the first driving wheel is meshed with the second driving wheel.

In addition, in order to solve the above problems, the present application also provides a vehicle including a frame and a powertrain as described above, the powertrain being provided in the frame.

In the application, the driving motor drives the sun wheel to rotate, the planetary wheel set is arranged at the radial position of the sun wheel, and the planetary wheel set can rotate around the sun wheel, so that the planetary wheel set can rotate to the bottom end of the sun wheel. When the planetary gear set is positioned at the bottom end of the sun gear, the second planetary gear is also positioned at the bottom end of the fixed shell, and the second planetary gear is meshed with the gear ring, so that lubricating liquid is infiltrated onto the second planetary gear. The lubrication liquid infiltrates the first planet gears through the second planet gears, and the sun gears can be also enabled to be stained with the lubrication liquid through engagement of the first planet gears and the sun gears. Therefore, the planetary gear set revolves around the sun gear for a circle and passes through the liquid storage space, so that the lubricating liquid is stirred up, and the lubrication of the sun gear and the planetary gear set is performed. Furthermore, the technical scheme of the application reduces the arrangement of the oil injection structure, reduces the structure of a transmission system and saves the position space.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application as claimed.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application. It is evident that the drawings in the following description are only some embodiments of the present application and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.

Fig. 1 schematically shows a schematic structure of a powertrain in the present application.

FIG. 2 schematically illustrates a schematic construction of the powertrain of FIG. 1 with a first drive wheel and a second drive wheel in accordance with the present application;

fig. 3 schematically shows a schematic view of the structure of the power assembly of the present application, in which the driving motor and the sun gear are disposed above the first axle.

Fig. 4 schematically shows a schematic view of the power assembly of fig. 3 provided with a first transmission wheel and a second transmission wheel according to the present application.

Fig. 5 schematically illustrates a power transfer schematic of the powertrain of fig. 1 in an electric-only mode, in accordance with the present application.

FIG. 6 schematically illustrates a power transfer schematic of the powertrain of FIG. 1 in a series hybrid mode in accordance with the present application.

FIG. 7 schematically illustrates a power transfer schematic of the powertrain of FIG. 1 in a braking energy recovery mode in accordance with the present application.

Fig. 8 schematically illustrates a power transfer schematic of the powertrain of fig. 1 in a park power generation mode in accordance with the present application.

The reference numerals are explained as follows:

100. A driving motor; 200. a sun gear; 300. a planetary gear set; 410. a fixed case; 420. a gear ring; 510. a first axle; 520. a second axle; 600. a differential; 710. a first output wheel; 720. a second output wheel; 810. a transmission shaft; 820. a first drive gear; 830. a second drive gear; 910. an engine; 920. a generator; 930. a damper; 940. a power line; 950. a first driving wheel; 960. a second driving wheel;

310. a first planet; 320. a second planet wheel; 401. a liquid storage space; 511. a right wheel; 521. a left wheel; 610. a planet carrier; 601. a bracket space; 620. a differential wheel set; 621. a first differential wheel; 622. and a second differential wheel.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments may be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art.

Referring to fig. 1, the present application provides a powertrain, comprising: drive motor 100, sun gear 200, planetary gear set 300, stationary housing 410, and ring gear 420.

The driving motor 100 is used for providing power, and the power of the driving motor 100 can be from a battery or directly from the generator 920; one axial side of the sun gear 200 is connected with the driving motor 100; the power generated by the driving motor 100 is output to the sun gear 200 to drive the sun gear 200 to rotate.

In which the driving motor 100 is disposed in the axial direction of the sun gear 200, it is understood that the sun gear 200 and the driving motor 100 are coaxially disposed. The gear arrangement between the coaxially arranged driving motor 100 and the sun gear 200 is more compact, the driving motor 100 can directly transmit power to the sun gear 200, a larger transmission ratio can be obtained, and the power density of the power assembly is improved.

The planetary gear set 300 is arranged at a radial position of the sun gear 200, the planetary gear set 300 comprises a first planetary gear 310 and a second planetary gear 320, the first planetary gear 310 is meshed with the sun gear 200, and the first planetary gear 310 and the second planetary gear 320 are axially connected in series; the axial series connection of the first planet 310 and the second planet 320 may be understood as a double row arrangement of the first planet 310 and the second planet 320. By adopting the duplex planetary gear set 300, the first planetary gear 310 and the second planetary gear 320 bear load jointly, the load of a single planetary gear is reduced, and the service life is prolonged. The sun gear 200 rotates to rotate the planetary gear set 300, and the planetary gear set 300 also revolves around the sun gear 200.

The fixed shell 410 is at least arranged around the second planetary gear 320; the stationary housing 410 is mainly used for protecting the internal structural components of the powertrain, and the stationary housing 410 may extend to the positions of the first planetary gear 310 and the sun gear 200 in addition to being enclosed around the second planetary gear 320. The stationary housing 410 is typically stationary and does not rotate with the rotation of the second planetary gears 320.

The gear ring 420 is arranged on one side of the fixed shell 410 facing the second planet gears 320, the second planet gears 320 are meshed with the gear ring 420, a liquid storage space 401 is formed at the bottom end of the fixed shell 410, the liquid storage space 401 is used for storing lubricating liquid, and part of the structure of the gear ring 420 is located in the liquid storage space 401. The lubricating fluid mainly reduces friction generated during mechanical transmission, and simultaneously can also take away heat, thereby being beneficial to cooling. The ring gear 420 is disposed on the inner side of the stationary housing 410, and the ring gear 420 is also stationary, and the second planetary gears 320 simultaneously mesh with the ring gear 420 as the first planetary gears 310 rotate around the sun gear 200. It will be appreciated that the second planet 320 is rotatable within the inner race of the ring gear 420, and that the first planet 310 and the second planet 320 are arranged in series such that the second planet 320 orbits the ring gear 420 one revolution and the first planet 310 orbits the sun gear 200 one revolution. The second planetary gear 320 passes through the liquid storage space 401 after at least one revolution. By the contact of the second planetary gear 320 with the ring gear 420, the lubrication fluid is transferred to the second planetary gear 320, and further to other mechanical components by the second planetary gear 320.

In the present application, the driving motor 100 drives the sun gear 200 to rotate, and the planetary gear set 300 is disposed at a radial position of the sun gear 200, and the planetary gear set 300 can rotate around the sun gear 200, so that the planetary gear set 300 can rotate to the bottom end of the sun gear 200. When the planetary gear set 300 is located at the bottom end of the sun gear 200, the second planetary gear 320 is also located at the bottom end of the fixed housing 410, and the second planetary gear 320 is engaged with the ring gear 420, so that the lubricating fluid infiltrates onto the second planetary gear 320. The lubrication fluid infiltrates the first planetary gear 310 through the second planetary gear 320, and the engagement between the first planetary gear 310 and the sun gear 200 can also ensure that the sun gear 200 is also contaminated with the lubrication fluid. As can be seen, the planetary gear set 300 revolves around the sun gear 200 for one revolution, and the lubricating liquid is stirred up through the liquid storage space 401, so that the lubrication of the sun gear 200 and the planetary gear set 300 is performed. Furthermore, the technical scheme of the application reduces the arrangement of the oil injection structure, reduces the structure of a transmission system and saves the position space.

In the present application, a plurality of planetary gear sets 300 may be further provided, and the plurality of planetary gear sets 300 are equally spaced apart from each other along the radial direction of the sun gear 200. By arranging a plurality of planetary gear sets 300, the contact area between the planetary gear sets 300 and the sun gear 200 is increased, and abrasion between the planetary gear sets 300 and the sun gear 200 is reduced. And through the arrangement of a plurality of planetary gear sets 300, further load is shared by a plurality of planetary gear sets 300, reduces the load of single planetary gear set 300, improves life. Wherein, each planetary gear set 300 has the same lubrication condition, and each planetary gear set 300 can rotate to the position of the liquid storage space 401, thereby improving the silencing performance under the cooperation of the lubricating liquid. Furthermore, by providing a plurality of planetary gear sets 300, the efficiency of mechanical rotation can be improved.

Moreover, by the equidistant arrangement of the plurality of planetary gear sets 300, the torque output positions can be more balanced, and the situation that local position loads are overlarge is avoided.

For the number of the planetary gear sets 300, for example, two planetary gear sets 300 may be provided, both planetary gear sets 300 rotate around the sun gear 200, a central connecting line between the two planetary gear sets 300 passes through the center of the sun gear 200, and the two planetary gear sets 300 always maintain a fixed relative distance. In addition, the planetary gear set 300 may be provided with three, four, or the like. In the case where three planetary gear sets 300 are provided, the three planetary gear sets 300 constitute an equilateral triangle, the center of which is located at the center of the sun gear 200. Four planetary gear sets 300 form a square, the center of which is located at the center of sun gear 200.

In the present application, the powertrain further includes a first axle 510 and a second axle 520, where the first axle 510 and the second axle 520 are disposed opposite to each other, and one end of the first axle 510 facing away from the second axle 520 and one end of the second axle 520 facing away from the first axle 510 are respectively used for connecting wheels; the first axle 510 may be connected to the right wheel 511 and the second axle 520 may be connected to the left wheel 521, the first axle 510 and the second axle 520 being adapted to transmit power to the right wheel 511 and the left wheel 521, respectively.

On the basis of the above embodiment, in order to reduce the skidding of the wheels at two sides of the vehicle, the power assembly further comprises a differential gear 600, wherein the differential gear 600 is in driving connection with the planetary gear set 300, and the differential gear 600 can receive the power transmitted by the planetary gear set 300. Differential 600 is disposed between first axle 510 and second axle 520. The first axle 510 and the second axle 520 can rotate independently, and when the rotation speeds of the left and right wheels 511 are different, the rotation speeds of the first axle 510 and the second axle 520 are adjusted and corrected at the position of the differential 600, so that the situation that the wheels slip is avoided.

Further, the differential 600 includes a planetary carrier 610 and a differential gear set 620, the planetary carrier 610 encloses a carrier space 601, the planetary gear set 300 is disposed on the planetary carrier 610, and the planetary carrier 610 can be driven to rotate by the rotation of the planetary gear set 300. The differential wheel set 620 is arranged in the bracket space 601; the planet carrier 610 may protect the differential wheel set 620.

The differential wheel set 620 includes a first differential wheel 621 and a second differential wheel 622, the first differential wheel 621 and the second differential wheel 622 are respectively connected to opposite sides of the planetary carrier 610, and the first differential wheel 621 and the second differential wheel 622 are engaged; the first differential wheel 621 and the second differential wheel 622 can be meshed to realize relative rotation of the first differential wheel 621 and the second differential wheel 622, so that the differential speed of the right wheel 511 and the left wheel 521 is realized, the differential speed function of the differential mechanism 600 is realized, and wheel slip is avoided.

The powertrain further includes a first output wheel 710 and a second output wheel 720, the first output wheel 710 being engaged with the first differential wheel 621, the first output wheel 710 being disposed on the first axle 510 and coaxially disposed with the first axle 510, the second output wheel 720 being engaged with the second differential wheel 622, the second output wheel 720 being disposed on the second axle 520 and coaxially disposed with the second axle 520. During normal running, the planetary carrier 610 receives power from the planetary gear set 300, and the planetary carrier 610 rotates to drive the first differential 621 to rotate and the second differential 622 to rotate, and the first differential 621 transmits power to the first output wheel 710 and to the first axle 510. The second differential 622 transmits power to the second output wheel 720 and to the second axle 520. The power is transmitted to the right wheel 511 through the first axle 510 and the power is transmitted to the left wheel 521 through the second axle 520, thereby achieving the wheel rotation on the left and right sides, respectively.

The first axle 510 is connected to the right wheel 511 through the planetary carrier 610, and the second axle 520 is connected to the left wheel 521 through the planetary carrier 610. Specifically, the first axle 510 and the second axle 520 are bearing-connected with the planetary carrier 610. For example, the left and right sides of the axis direction of the planetary carrier 610 may be respectively provided with an avoidance port, the avoidance port is provided with a bearing, the first axle 510 and the second axle 520 respectively pass through the bearing, the first axle 510 is rotationally connected with the planetary carrier 610 through the bearing, and the second axle 520 can also be rotationally connected with the planetary carrier 610 through the bearing.

When the loads of the wheels on the left side and the right side are the same, the left wheel and the right wheel synchronously rotate. When the wheel loads on the left and right sides are different, such as the wheel load connected with the first axle 510 is large, the opposite torque is transmitted to the first axle 510, so that the rotation speed of the first axle 510 is reduced or not rotated, even reversed, and the second differential wheel 622 is meshed with the first differential wheel 621, the planet carrier 610 and the first differential wheel 621 and the second differential wheel 622 integrally rotate around the first axle 510, and the rotation speed of the second axle 520 can be faster than the first axle 510, thereby realizing different rotation speeds, and being adjusted and corrected at the position of the differential gear 600. In the present application, by providing the first differential gear 621 and the second differential gear 622 inside the planetary carrier 610, space can be saved. Compared with the design of the transmission differential 600 requiring larger gear plate cooperation to complete the differential, the application realizes the light weight and miniaturization of the differential 600, saves weight, occupies smaller installation space and has more compact structure.

To improve the differential efficiency, the differential wheel sets 620 are provided in a plurality, and the differential wheel sets 620 are disposed at equal intervals around the first axle 510. It is understood that equally spaced about the first axle 510 is also equivalent to equally spaced about the second axle 520. Through the simultaneous rotation operation of the plurality of differential gear sets 620, the differential effect of the differential mechanism 600 is improved while the power transmission is improved, and the differential adjustment can be timely completed when the rotation speeds of the left wheel 521 and the right wheel 511 are different.

In order to further save the installation space, the power assembly further comprises a transmission shaft 810, one end of the transmission shaft 810 is connected with the sun gear 200, the other end of the transmission shaft 810 is connected with the driving motor 100, and the transmission shaft 810 is sleeved on the first axle 510. For example, the transmission shaft 810 is hollow, and an axially through cavity is formed inside the transmission shaft 810, and the first axle 510 is disposed in the through cavity of the transmission shaft 810. In this case, for example, a bearing is provided on the radial circumference of the first axle 510, and the transmission shaft 810 is sleeved outside the radial circumference of the bearing, i.e., the first axle 510 and the transmission shaft 810 are connected by the bearing. The arrangement of the bearings can ensure that the rotation of the first axle 510 and the transmission shaft 810 are not affected by each other, and can also support the distance between the two, thereby maintaining the structural stability of the first axle 510 and the transmission shaft 810. The axis of the sun gear 200 corresponds to the axis of the first axle 510, the driving electrode outputs torque force to enable the transmission shaft 810 to rotate and drive the sun gear 200 to rotate, the rotation directions of the first axle 510 and the transmission shaft 810 can be opposite, and the rotation of the transmission shaft 810 and the first axle 510 are not interfered with each other. The transmission shaft 810 is sleeved on the outer side surface of the first axle 510, so that the installation space is further compressed, and the structure of the power assembly is more compact.

In addition, referring to fig. 3, another embodiment of the sun gear 200 is provided, wherein the axial direction of the sun gear 200 is parallel to the axial direction of the first axle 510, for example, the sun gear 200 is disposed above the first axle 510. The powertrain further includes a first drive gear 820 and a second drive gear 830, the first drive gear 820 coupled to the planetary gear set 300, the second drive gear 830 disposed on the second axle 520, the first drive gear 820 meshed with the second drive gear 830. When the driving motor 100 works, the torque of the driving motor 100 is transmitted to the sun gear 200, the sun gear 200 drives the planetary gear set 300 to rotate, the planetary gear set 300 transmits power to the first driving gear 820, the first driving gear 820 is meshed with the second driving gear 830, the first driving gear 820 transmits power to the second driving gear 830, the second driving gear 830 and the second shaft 520 are coaxially arranged, namely, the axle center of the second driving gear 830 and the axle center of the second shaft 520 are on the same axis, and the second driving gear 830 is connected with the second shaft 520 through a bearing. The differential gear 600 is disposed between the first axle 510 and the second axle 520, the differential gear 600 includes a differential housing and a differential gear, the second driving gear 830 is fixedly connected with the differential housing, and the second driving gear 830 drives the differential housing to rotate. The differential gear is fixedly connected with the second axle 520, and the second driving gear 830 can transmit power to the differential gear through the differential case, thereby driving the second axle 520 to rotate. The first axle 510 is also connected to a differential case bearing, a differential gear may be fixedly provided on the first axle 510, and the second drive gear 830 may also transmit power to the first axle 510. Differential rotation of the first axle 510 and the second axle 520 may be achieved by the differential 600 when the loads of the first axle 510 and the second axle 520 are different. For example, the differential 600 further includes planetary gears fixed to the differential case, the planetary gears being engaged with the differential gears on the first axle 510 and the second axle 520, respectively, and the differential speed of the first axle 510 and the second axle 520 can be achieved by rotation of the planetary gears.

By the arrangement of the first drive gear 820 and the second drive gear 830, even if the drive motor 100 is far from the first axle 510 and the second axle 520, the power transmission of the drive motor 100 to the wheels can be ensured, thereby making the arrangement position of the drive motor 100 more flexible. Furthermore, the arrangement of the first drive gear 820 and the second drive gear 830 also enables an increase in the gear ratio.

In the application, the power assembly further comprises an engine 910, a generator 920 and a shock absorber 930, wherein the engine 910 is connected with the generator 920, and the shock absorber 930 is arranged between the engine 910 and the generator 920; the engine 910 vibrates during operation, and the vibration of the engine 910 can be reduced from being transmitted to the generator 920 by the arrangement of the damper 930, so that the operation disturbance to the generator 920 can be reduced. The engine 910, the generator 920, and the drive motor 100 may operate independently or may cooperate with each other to output power. The power assembly further includes a power line 940, one end of the power line 940 is connected to the generator 920, and the other end is connected to the driving motor 100. Drive motor 100 may receive power from generator 920. It can be seen that the powertrain of the present application is capable of providing a variety of power output modes.

Referring to fig. 2, in order to improve the torque output of the engine 910, the power assembly further includes a first driving wheel 950 and a second driving wheel 960, wherein the first driving wheel 950 is disposed at a side of the shock absorber 930 facing away from the engine 910 and is connected with the shock absorber 930, the second driving wheel 960 is in driving connection with the generator 920, and the first driving wheel 950 is engaged with the second driving wheel 960. The engagement of the first transmission wheel 950 and the second transmission wheel 960 can improve the transmission ratio, which is beneficial for the engine 910 to convert more energy into power for driving the generator 920, and improve the generated energy.

Referring to fig. 4, on the basis that the sun gear and the driving motor are arranged above the first axle in fig. 3, the power assembly further comprises a first driving wheel 950 and a second driving wheel 960, the first driving wheel 950 is arranged on one side of the shock absorber 930, which is away from the engine 910, and is connected with the shock absorber 930, the second driving wheel 960 is in driving connection with the generator 920, and the first driving wheel 950 is meshed with the second driving wheel 960. The gear ratio may be increased by the engagement of the first drive wheel 950 and the second drive wheel 960. Further, the arrangement of the first drive gear 820 and the second drive gear 830 can also improve the transmission ratio.

For specific modes of operation, reference is made to table one, which may include electric only mode, series hybrid mode, braking energy recovery mode and park power mode, as exemplified below.

List one

Mode	Engine with a motor	Electric generator	Driving motor
				Pure electric	/	/	Driving of
Series mixing	Start-up	Generating electricity	Driving of
				Braking energy recovery	/	/	Generating electricity
Parking power generation	Start-up	Generating electricity	/

Referring to fig. 5, in the electric-only mode, engine 910 and generator 920 stop operating and do not participate in power output. In fig. 5, the dotted line portion indicates the transmission direction of power, the driving motor 100 obtains energy from the battery, the driving motor 100 outputs power, and the power sequentially passes through the transmission shaft 810, the sun gear 200, the first planetary gear 310, and the second planetary gear 320 to the planetary carrier 610. Through the planetary carrier 610, the power is respectively transmitted to the first differential wheel 621 and the second differential wheel 622, the first differential wheel 621 transmits the power to the first output wheel 710, the second differential wheel 622 transmits the power to the second output wheel 720, the first output wheel 710 drives the first axle 510 to rotate, and the second output wheel 720 drives the second axle 520 to rotate, so that the right wheel 511 and the left wheel 521 are respectively driven to rotate.

Referring to fig. 6, in series hybrid mode, engine 910 and generator 920 are started to operate and participate in power output. In fig. 6, the broken line indicates the power transmission direction, and the engine 910 is operated to transmit the generated power to the generator 920, and the generator 920 supplies the electric power to the drive motor 100 or stores the electric power in the battery. The driving motor 100 directly obtains power from the generator 920 or obtains power from a battery, and then sequentially transmits the power to the transmission shaft 810, the sun gear 200, the first planetary gear 310, the second planetary gear 320 and the planetary carrier 610. The travel of the vehicle is achieved while transmitting power to the first axle 510 and the second axle 520 through the planetary carrier 610. Note that the series hybrid mode is also referred to as a range-extending mode.

Referring to fig. 7, in the braking energy recovery mode, the driving motor 100 is operated. The broken line in fig. 7 indicates the transmission direction of power, and the vehicle itself has kinetic energy when the vehicle is braked, and the generated kinetic energy is converted into electric energy by the drive motor 100 and stored in the battery. Specifically, the kinetic energy generated by braking the vehicle drives the left wheel 521 and the right wheel 511 to rotate, the right wheel 511 drives the first axle 510 to rotate, the left wheel 521 drives the second axle 520 to rotate, the first axle 510 drives the first differential wheel 621 to rotate through the first output wheel 710, the second axle 520 drives the second differential wheel 622 to rotate through the second output wheel 720, the planetary carrier 610 is further rotated, the planetary wheel set 300 is further driven to rotate, the sun wheel 200 is driven to rotate through the planetary wheel set 300, the sun wheel 200 transmits power to the driving motor 100, the driving motor 100 generates electric energy, and the electric energy is stored in the battery. And the energy loss is reduced and the energy efficiency is improved by braking the energy recovery model. Thereby prolonging the endurance mileage, reducing pollution and improving the energy utilization efficiency of the automobile.

Referring to fig. 8, in the parking power generation mode, the engine 910 is operated, and the vehicle is not moved at this time, and power generated by the operation of the engine 910 is recovered. In fig. 8, the dashed line represents the direction of power transmission, the engine 910 transmits power to the generator 920, and the generator 920 stores the generated electric energy in the battery. The parking power generation mode can also reduce energy loss and improve energy efficiency.

In addition, when the vehicle is running, the operation modes are switched according to the specific running condition of the vehicle. For example, it is preferable to determine the relationship between the SOC (State of Charge) value and the control threshold, determine how much power is stored in the battery, if the SOC value is greater than the control threshold, the battery may provide power to the outside, and if the SOC value is less than or equal to the control threshold, the battery is low, and power needs to be supplemented. After comparison, a judgment result is generated; then, according to the judgment result, the working mode of the power assembly is switched, the SOC value is too low, and the engine 910 and the generator 920 can be started to provide power for the battery. The SOC value and the control threshold may be set freely according to a specific control policy, and may be automatically switched between various modes according to the determination result. In addition, when the automobile brakes, the driving motor 100 generates braking torque to brake the wheels, meanwhile, induced current is generated in the windings of the driving motor 100, and the induced current charges a battery, so that braking energy is recovered.

The application also provides a vehicle which comprises a frame and the power assembly, wherein the power assembly is arranged on the frame. The frame forms an installation space, and the power assembly sets up in the installation space, and the frame can also play certain support and protection to the power assembly.

The specific embodiments and advantageous effects of the vehicle refer to the solutions of the above-mentioned power assembly, and are not described herein again.

Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the application following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the application pertains.

It is to be understood that the application is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims

1. A powertrain, the powertrain comprising:

a driving motor for providing power;

the sun gear is connected with the driving motor at one axial side;

the fixed shell is at least arranged around the second planet wheel; and

2. The powertrain of claim 1, wherein the planetary gear sets are provided in a plurality, the plurality of planetary gear sets being equally spaced apart along the radial position of the sun gear.

3. The powertrain of claim 1, further comprising a first axle and a second axle, the first axle and the second axle being disposed opposite one another, an end of the first axle facing away from the second axle, and an end of the second axle facing away from the first axle being configured to connect wheels, respectively;

4. The powertrain of claim 3, wherein the differential comprises a planet carrier and a differential set, the planet carrier enclosing to form a carrier space, the planetary set being disposed on the planet carrier, the differential set being disposed within the carrier space;

5. The powertrain of claim 4, wherein a plurality of the differential wheelsets are provided and a plurality of the differential wheelsets are equally spaced about the first axle.

6. The powertrain of claim 3, further comprising a drive shaft, wherein one end of the drive shaft is connected to the sun gear and the other end is connected to the drive motor, and wherein the drive shaft is journaled in the first axle.

7. A powertrain according to claim 3, wherein the axial direction of the sun gear is parallel to the axial direction of the first axle;

8. The powertrain of any one of claims 1 to 7, further comprising an engine, a generator, and a shock absorber, the engine being connected to the generator, the shock absorber being disposed between the engine and the generator;

9. The powertrain of claim 8, further comprising a first drive wheel and a second drive wheel, wherein the first drive wheel is disposed on a side of the shock absorber facing away from the engine and is coupled to the shock absorber, wherein the second drive wheel is drivingly coupled to the generator, and wherein the first drive wheel and the second drive wheel are engaged.

10. A vehicle comprising a frame and a powertrain as claimed in any one of claims 1 to 9, the powertrain being provided within the frame.