CN115703343A - Hybrid power system and vehicle with same - Google Patents

Abstract

The invention discloses a hybrid power system and a vehicle with the same, comprising: an engine; the first planet row comprises a first sun gear, a first planet carrier, a first gear ring and a plurality of first planet gears, the first planet gears are meshed with the first sun gear and the first gear ring, the first planet carrier is connected with an engine, and the first gear ring is connected with a first driving gear; the second planet row comprises a second sun gear, a second planet carrier, a second gear ring and a plurality of second planet gears, the second planet gears are meshed with the second sun gear and the second gear ring, the second sun gear is connected with the first planet carrier, and the second gear ring is connected with the first sun gear; the driven gear is meshed with the first driving gear; the first motor is connected with the second planet carrier; and the second motor is in transmission connection with the driven gear. The hybrid power system provided by the embodiment of the invention has the advantages of high force transmission efficiency, low energy consumption, low processing difficulty and the like.

Description

Hybrid power system and vehicle with same

Technical Field

The invention relates to the technical field of vehicles, in particular to a hybrid power system and a vehicle with the same.

Background

In the related art, a hybrid power system is usually provided with double planetary rows, and an engine is in transmission connection with a motor through the double planetary rows, so that the hybrid power system can be switched in a pure electric mode, a fuel oil mode and a hybrid stepless speed change driving mode, but the connection relationship between the double planetary rows is unreasonable, so that the hybrid power system is low in force transmission efficiency, high in energy consumption and difficult to machine.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, one object of the present invention is to provide a hybrid system, which has the advantages of high force transmission efficiency, low energy consumption, low processing difficulty, etc., while the power distribution ratio is reasonable.

The invention also provides a vehicle with the hybrid power system.

In order to achieve the above object, an embodiment according to a first aspect of the present invention proposes a hybrid system including: an engine having an engine output shaft; the first planet row comprises a first sun gear, a first planet carrier, a first gear ring and a plurality of first planet gears, the first gear ring is arranged around the first sun gear, each first planet gear is rotatably arranged on the first planet carrier and is respectively meshed with the first sun gear and the first gear ring, the first planet gears are arranged at intervals along the circumferential direction of the first sun gear, the first planet carrier is in transmission connection with the engine output shaft, and the first gear ring is connected with a first driving gear; a second planet row, wherein the second planet row comprises a second sun gear, a second planet carrier, a second gear ring and a plurality of second planet gears, the second gear ring is arranged around the second sun gear, each second planet gear is rotatably arranged on the second planet carrier and is respectively meshed with the second sun gear and the second gear ring, the plurality of second planet gears are arranged at intervals along the circumferential direction of the second sun gear, the second sun gear is in transmission connection with the first planet carrier, and the second gear ring is in transmission connection with the first sun gear; a driven gear engaged with the first drive gear; the first motor is provided with a first motor shaft, and the first motor shaft is in transmission connection with the second planet carrier; and the second motor is provided with a second motor shaft, and the second motor shaft is in transmission connection with the driven gear.

The hybrid power system provided by the embodiment of the invention has the advantages of high force transmission efficiency, low energy consumption, low processing difficulty and the like while the power distribution proportion is reasonable.

According to some embodiments of the invention, the first planet carrier is located on a side of the first planet row facing away from the second planet row, the first planet carrier and the second sun gear are connected by a first construction member, the first sun gear and the second ring gear are connected by a second construction member, and the second construction member and the first sun gear are idly sleeved with the first construction member.

According to some embodiments of the invention, the hybrid system further comprises: the differential device is connected with a reduction driven gear in a transmission manner, and the reduction driven gear is meshed with the reduction driven gear.

According to some embodiments of the invention, the hybrid system further comprises: a third planet row, which includes a third sun gear, a third planet carrier, a third ring gear, and a plurality of third planet gears, wherein the third ring gear is disposed around the third sun gear, each third planet gear is rotatably mounted on the third planet carrier and is engaged with the third sun gear and the third ring gear, the plurality of third planet gears are disposed at intervals along the circumferential direction of the third sun gear, and the third sun gear is in transmission connection with the driven gear; and the third planet carrier is in transmission connection with the differential device.

According to some embodiments of the invention, the engine and the first motor are coaxially arranged and coaxially arranged with the second motor, and the second motor shaft is connected with a second driving gear and is in transmission connection with the driven gear through the second driving gear.

According to some embodiments of the invention, the engine, the first motor and the second motor are coaxially arranged, and the second motor shaft is in driving connection with the first driving gear and in driving connection with the driven gear through the first driving gear.

According to some embodiments of the invention, the second motor is positioned between the engine and the first planetary gear set, the second motor shaft is idly sleeved on the engine output shaft,

according to some embodiments of the invention, the hybrid system further comprises: a one-way locking mechanism engaged with the engine output shaft, the one-way locking mechanism allowing the engine output shaft to rotate only in one of a clockwise direction or a counterclockwise direction.

According to some embodiments of the invention, the hybrid system further comprises: a locker connected to the first sun gear and the second ring gear, for controlling whether to apply braking to the first sun gear and the second ring gear.

According to an embodiment of the second aspect of the invention, a vehicle is provided, which comprises the hybrid power system according to the embodiment of the first aspect of the invention.

According to the vehicle provided by the embodiment of the second aspect of the invention, by utilizing the hybrid power system provided by the embodiment of the first aspect of the invention, the power distribution proportion is reasonable, and meanwhile, the advantages of high force transmission efficiency, low energy consumption, low processing difficulty and the like are achieved.

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

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic configuration diagram of a hybrid system according to an embodiment of the invention.

Fig. 2 is a lever diagram of the dynamics of the hybrid system according to the embodiment of the invention.

FIG. 3 is a lever diagram of the dynamics of a hybrid powertrain in an electric-only mode according to an embodiment of the present invention.

Fig. 4 is a lever diagram of dynamics of a hybrid system in a hybrid driving mode according to an embodiment of the present invention.

Fig. 5 is a schematic structural diagram of a hybrid system according to an embodiment of the present invention in which a one-way locking mechanism is connected to an engine output shaft.

Fig. 6 is a schematic structural diagram of a hybrid system according to another embodiment of the invention, in which a one-way locking mechanism is connected to an engine output shaft.

Fig. 7 is a schematic structural view of a hybrid system according to an embodiment of the present invention in which a one-way brake is connected to a first motor shaft.

Fig. 8 is a schematic structural view of a hybrid system according to another embodiment of the present invention in which a one-way brake is connected to a first motor shaft.

Fig. 9 is a schematic structural view of the connection of the driven gear and the differential device of the hybrid system through the third planetary row according to the embodiment of the invention.

Fig. 10 is a schematic structural view of the engine, the first motor and the second motor of the hybrid system according to the embodiment of the invention.

Fig. 11 is a schematic structural diagram of a hybrid system having a lock-up according to an embodiment of the invention.

Reference numerals are as follows:

a hybrid power system 1,

An engine 100, an engine output shaft 110,

A first planet row 200, a first sun gear 210, a first planet carrier 220, a first ring gear 230, a first planet gear 240, a first structure 250, a first planet carrier 220, a first planet carrier 230, a second planet gear 240, a second structure 250, a third planet carrier 220, a fourth planet carrier 230, a third planet carrier 220, a fourth planet carrier 230, a fourth planet carrier 250, a fifth planet carrier,

A second planet row 300, a second sun gear 310, a second planet carrier 320, a second ring gear 330, second planet gears 340, a second structure 350,

A first driving gear 400, a driven gear 500, a differential device 600, a reduction driving gear 610, a reduction driven gear 620,

Third planet row 630, third sun gear 631, third planet carrier 632, third planet gears 633, third ring gear 634,

A first motor 700, a first motor shaft 710,

A second motor 800, a second motor shaft 810, a second driving gear 820,

One-way locking mechanism 910, locker 920, one-way brake 930.

Detailed Description

Embodiments of the present invention will be described in detail below, the embodiments described with reference to the drawings being illustrative, and the embodiments of the present invention will be described in detail below.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

In the description of the present invention, "a plurality" means two or more.

A hybrid system 1 according to an embodiment of the invention is described below with reference to the drawings.

As shown in fig. 1 to 11, the hybrid system 1 includes an engine 100, a first planetary gear set 200, a second planetary gear set 300, a driven gear 500, a first motor 700, and a second motor 800.

The engine 100 has an engine output shaft 110, the first planetary row 200 includes a first sun gear 210, a first planet carrier 220, a first ring gear 230, and a plurality of first planet gears 240, the first ring gear 230 is disposed around the first sun gear 210, each first planet gear 240 is rotatably mounted on the first planet carrier 220 and meshed with the first sun gear 210 and the first ring gear 230, respectively, the plurality of first planet gears 240 are disposed at intervals along the circumference of the first sun gear 210, the first planet carrier 220 is drivingly connected with the engine output shaft 110, and the first driving gear 400 is connected to the first ring gear 230.

The second planet row 300 comprises a second sun gear 310, a second planet carrier 320, a second ring gear 330 and a plurality of second planet gears 340, wherein the second ring gear 330 is arranged around the second sun gear 310, each second planet gear 340 is rotatably arranged on the second planet carrier 320 and is respectively meshed with the second sun gear 310 and the second ring gear 330, the plurality of second planet gears 340 are arranged at intervals along the circumferential direction of the second sun gear 310, the second sun gear 310 is in transmission connection with the first planet carrier 220, and the second ring gear 330 is in transmission connection with the first sun gear 210.

The driven gear 500 is engaged with the first driving gear 400, the first motor 700 has a first motor shaft 710, the first motor shaft 710 is in transmission connection with the second planet carrier 320, the second motor 800 has a second motor shaft 810, and the second motor shaft 810 is in transmission connection with the driven gear 500.

For example, the first motor 700 and the second motor 800 may be electric motors having a power generation function, and the first motor 700 and the second motor 800 may transmit electric energy therebetween. The central axis of the first planetary row 200 and the central axis of the second planetary row 300 may coincide.

The ratio of the number of teeth of the first ring gear 230 to the number of teeth of the first sun gear 210 is set to K1, the ratio of the number of teeth of the second ring gear 330 to the number of teeth of the second sun gear 310 is set to K2, the rotation speed of the first motor 700 is set to N1, the rotation speed of the first driving gear 400 is set to N2, the rotation speed of the engine 100 is set to N3, the torque of the first motor 700 is set to T1, the torque of the first driving gear 400 is set to T2, and the torque of the engine 100 is set to T3.

Wherein the content of the first and second substances,

k1 and K2 are greater than 1, and in general K1 and K2 may be from 1.6 to 4. The dynamics of the hybrid system 1 are shown in fig. 2.

According to the hybrid system 1 of the present invention, the engine 100 is connected to the engine output shaft 110, the engine output shaft 110 is in transmission connection with the first planetary row 200, the first motor 700 is connected to the first motor shaft 710, the first motor shaft 710 is in transmission connection with the second planetary row 300, the first planetary row 200 is in transmission connection with the second planetary row 300, the second planetary row 300 is connected to the first driving gear 400, the first driving gear 400 is engaged with the driven gear 500, and the second motor shaft 810 is in transmission connection with the driven gear 500.

When the first motor 700 and the engine 100 are not operated, the second motor 800 can separately drive the driven gear 500 to rotate, so as to drive the vehicle to move, and at this time, the hybrid power system 1 is in a pure electric mode, and the dynamic characteristics of the hybrid power system 1 are shown in fig. 3.

When the first motor 700, the second motor 800 and the engine 100 work, power output by the engine 100 is transmitted to the driven gear 500 and the first motor 700 through the double planetary gear set, the first motor 700 can be forced to rotate to generate power, electric energy generated by the first motor 700 can be used for supplying power to the second motor 800, power output by the second motor 800 is also transmitted to the driven gear 500, the engine 100 and the second motor 800 drive the vehicle to move together, and the ratio of power output by the engine 100 to the first motor 700 and the driven gear 500 can be adjusted through the double planetary gear set, so that the hybrid power system 1 is in a hybrid drive continuously variable transmission (ECVT) mode, and the dynamic characteristics of the hybrid power system 1 are shown in fig. 4.

When the first motor 700 and the engine 100 work and the second motor 800 does not work, the power output by the engine 100 is respectively transmitted to the driven gear 500 and the first motor 700 through the double planetary gear set, the first motor 700 can be stressed to rotate to generate electricity, the electric energy generated by the first motor 700 can be stored in the battery of the vehicle, and the proportion of the power output by the engine 100 to the first motor 700 and the driven gear 500 can be adjusted through the double planetary gear set, so that the hybrid power system 1 is in a fuel oil stepless speed change mode.

By arranging the first planetary row 200 and the second planetary row 300, the power output by the engine 100 can be shared by the two planetary rows, and compared with a power system in which only one planetary row is arranged in the related art, the load borne by each planetary row of the hybrid power system 1 of the embodiment of the invention is smaller, so that the size of each planetary row can be reduced, the purposes of reducing the volume and the cost can be achieved, the abrasion speed of each planetary row can be reduced, the service life of each planetary row can be prolonged, and the service life of the hybrid power system 1 can be prolonged.

By

And

two relations can be seen, the ratio K1 of the number of teeth of the first ring gear 230 to the number of teeth of the first sun gear 210 may be 3.5, the ratio K2 of the number of teeth of the second ring gear 330 to the number of teeth of the second sun gear 310 may be 2.5, T1: t2: t3= 2; the torque distributed to the first motor 700 accounts for less than 28.5% of the total torque output by the engine 100, and is used for driving the first motor 700 to generate electricity, the proportion of the power output by the engine 100 distributed to the first driving gear 400 and the first motor 700 is reasonable, and the power performance of the vehicle is excellent.

The torque output from the engine 100 is transmitted to the first driving gear 400 through the engine output shaft 110, the first carrier 220, the first planetary gears 240, and the first ring gear 230, the engine output shaft 110 and the first carrier 220 may be integrally formed, and the first ring gear 230 and the first driving gear 400 may be integrally formed, wherein only the first planetary gears 240 and the first ring gear 230 are engaged with each other, and a portion of the force transmission path from the engine 100 to the first driving gear 400, which is power transmission in a meshing connection manner, is very small, so that the force transmission efficiency between the engine 100 and the first driving gear 400 is high, that is, the energy consumption between the engine 100 and the first driving gear 400 is small.

The torque output from the engine 100 is transmitted to the first electric machine 700 through two force transmission paths, i.e., the engine output shaft 110, the first carrier 220, the first planetary gear 240, the first sun gear 210, the second ring gear 330, the second planetary gear 340, and the second carrier 320 (which are the first force transmission paths), and the engine output shaft 110, the first carrier 220, the second sun gear 310, the second planetary gear 340, and the second carrier 320 (which are the second force transmission paths). Since the engine output shaft 110 and the first carrier 220 may be integrally formed, the first sun gear 210 and the second ring gear 330 may be integrally formed, the second carrier 320 and the first motor shaft 710 may be integrally formed, and the first carrier 220 and the second sun gear 310 may be integrally formed, in the first force transmission path, the first planet gears 240 and the first sun gear 210 are engaged, and the second ring gear 330 and the second planet gears 340 are engaged, in the second force transmission path, the second sun gear 310 and the second planet gears 340 are engaged, and there are few portions in which power is transmitted in a meshing connection manner in the two force transmission paths, and thus the force transmission efficiency between the engine 100 and the first motor 700 is high, that is, the energy consumption between the engine 100 and the first motor 700 is low.

In conclusion, the hybrid power system 1 has high force transmission efficiency, can save the energy of the vehicle, reduces the use cost and can optimize the power performance.

In addition, since the ratio of the number of teeth of the first ring gear 230 to the number of teeth of the first sun gear 210 is 3.5, the size of the first planetary row 200 is large, and the processing difficulty of the first planetary row 200 is further reduced. Because the ratio of the number of teeth of the second ring gear 330 to the number of teeth of the second sun gear 310 is 2.5, the second planetary gear set 300 has low processing difficulty and small volume, and is beneficial to the miniaturization of the hybrid power system 1 and the improvement of the space utilization rate of the vehicle.

Therefore, the hybrid power system 1 of the embodiment of the invention has the advantages of high force transmission efficiency, low energy consumption, low processing difficulty and the like while the power distribution proportion is reasonable.

According to some embodiments of the present invention, as shown in fig. 1, 5-11, the first planet carrier 220 is located on a side of the first planet row 200 facing away from the second planet row 300, the first planet carrier 220 and the second sun gear 310 are connected by the first structural member 250, the first sun gear 210 and the second ring gear 330 are connected by the second structural member 350, and the second structural member 350 and the first sun gear 210 are freely sleeved on the first structural member 250.

The first structural member 250, the first planet carrier 220, and the second sun gear 310 may be integrally formed, and the second structural member 350, the first sun gear 210, and the second ring gear 330 may be integrally formed. In this way, interference between the first carrier 220 and the second structure 350 does not occur, and the connection strength between the first carrier 220 and the second sun gear 310 and the connection strength between the first sun gear 210 and the second ring gear 330 are high. In addition, while ensuring that the first structural member 250 does not interfere with the first sun gear 210 and the second structural member 350, the space utilization of the hybrid system 1 is improved.

For example, the second planet carrier 320 may be located on a side of the second planet carrier 300 facing away from the first planet carrier 200 to facilitate the connection between the first motor 700 and the second planet carrier 320.

In some embodiments of the present invention, as shown in fig. 5 to 8, the hybrid system 1 further includes a differential device 600, the driven gear 500 is drivingly connected with a reduction driving gear 610, the differential device 600 is connected with a reduction driven gear 620, and the reduction driving gear 610 is meshed with the reduction driven gear 620. Wherein the differential device 600 is connected to wheels to facilitate turning of the vehicle.

By providing the reduction driven gear 620 and the reduction driving gear 610, the rotation speed of the differential device 600 can be made smaller than the rotation speed of the driven gear 500, and the torque of the differential device 600 can be made larger than the torque of the driven gear 500, and in addition, the reduction driven gear 620 and the reduction driving gear 610 are easy to process and convenient to arrange.

In other embodiments of the present invention, as shown in fig. 9, the hybrid system 1 further includes a third planetary row 630 and a differential device 600. Wherein the differential device 600 is connected with wheels to facilitate turning of the vehicle.

The third planet row 630 includes a third sun gear 631, a third planet carrier 632, a third ring gear 634, and a plurality of third planet gears 633, the third ring gear 634 is disposed around the third sun gear 631, each third planet gear 633 is rotatably mounted to the third planet carrier 632 and meshes with the third sun gear 631 and the third ring gear 634, respectively, the plurality of third planet gears 633 are spaced apart along a circumference of the third sun gear 631, the third sun gear 631 is drivingly connected to the driven gear 500, and the third planet carrier 632 is drivingly connected to the differential 600.

In this way, power transmission between the driven gear 500 and the differential device 600 is smoother, and the third planetary row 630 has the effects of decelerating and lifting torque.

In some embodiments of the present invention, as shown in fig. 5-9, the engine 100 and the first motor 700 are coaxially arranged and coaxially arranged with the second motor 800, and the second motor shaft 810 is connected with the second driving gear 820 and is in transmission connection with the driven gear 500 through the second driving gear 820.

Specifically, first planetary row 200 and second planetary row 300 are disposed between engine 100 and first electric machine 700, and second electric machine 800 and first electric machine 700 are located on the same side of first planetary row 200 and second planetary row 300.

As such, the central axis of first electric machine 700 is parallel to and does not coincide with the central axis of second electric machine 800, and the overall axial dimension of hybrid system 1 can be reduced to facilitate the arrangement of hybrid system 1. Moreover, because the second motor 800 and the first motor 700 generate less heat during operation, and the second motor 800 and the first motor 700 have lower heat dissipation requirements, the second motor 800 and the first motor 700 are disposed at one axial end of the hybrid system 1, and the engine 100 is disposed at the other axial end of the hybrid system 1, which is beneficial to optimizing the heat dissipation performance of the engine 100.

In other embodiments of the present invention, as shown in fig. 10, the engine 100, the first motor 700 and the second motor 800 are coaxially arranged, and the second motor shaft 810 is in transmission connection with the first driving gear 400 and in transmission connection with the driven gear 500 through the first driving gear 400. Therein, the first motor 700 may be located between the engine 100 and the second planetary row 300.

For example, the central axis of the engine 100, the central axis of the first electric machine 700, the central axis of the second electric machine 800, the central axis of the first planetary row 200, and the central axis of the second planetary row 300 may coincide. In this way, on the one hand, the overall size of the hybrid system 1 in the radial direction of the first motor 700 can be reduced, and on the other hand, the second motor 800 does not need to be additionally provided with a gear connected to the driven gear 500, so that the number of parts of the hybrid system 1 is reduced, and the weight and the cost are reduced.

Alternatively, the first motor 700 is positioned between the engine 100 and the first planetary gear set 200, and the first motor shaft 710 is hollow around the engine output shaft 110, wherein the first planet carrier 220 is positioned between the second motor 800 and the first sun gear 210, and the first motor shaft 710 surrounds the first planet carrier 220. Therefore, the force transmission path between the second motor 800 and the first driving gear 400 is short, and the second motor shaft 810 and the first driving gear 400 can be integrally formed, so that the energy consumption is reduced, the interference between the second motor shaft 810 and the first planetary gear set 200 and the interference between the first motor shaft 810 and the first driving gear set 100 can be avoided, and the reliability of the hybrid power system 1 is improved.

According to some embodiments of the present invention, as shown in fig. 5 and 6, the hybrid system 1 further includes a one-way locking mechanism 910, the one-way locking mechanism 910 is engaged with the engine output shaft 110, and the one-way locking mechanism 910 allows only the engine output shaft 110 to rotate in one of a clockwise direction and a counterclockwise direction.

The one-way locking mechanism 910 may be a one-way clutch or a brake, for example, when the engine 100 rotates in the clockwise direction, the normal rotation direction of the engine 100 is obtained, that is, when the engine 100 rotates in the clockwise direction, the vehicle may be driven to move, and the first motor 700 may be driven to generate power.

When the one-way locking mechanism 910 is a one-way clutch, the one-way clutch is sleeved on the engine output shaft 110, and when the engine output shaft 110 rotates clockwise, the inner circumferential surface of the one-way clutch can rotate along with the engine output shaft 110; the inner peripheral surface of the one-way clutch is fixed to prevent the engine output shaft 110 from rotating when the engine output shaft 110 rotates in the counterclockwise direction.

When the one-way locking mechanism 910 is a brake, and the engine output shaft 110 rotates clockwise, the brake is turned off to allow the engine output shaft 110 to rotate; when the engine output shaft 110 rotates in the counterclockwise direction, the brake is closed to prevent the engine output shaft 110 from rotating.

When the first motor 700 outputs power, the engine 100 does not rotate counterclockwise because the one-way locking mechanism 910 can brake the engine output shaft 110. In this way, when the engine 100 is not operated, the first motor 700 can drive the vehicle to move alone, or the first motor 700 and the second motor 800 can drive the vehicle to move together.

The power transmission modes of the above two operation modes are described below by way of example:

1. when the first motor 700 alone drives the vehicle to move and the first motor 700 can rotate in the counterclockwise direction, the engine output shaft 110 and the first carrier 220 are restricted by the one-way locking mechanism 910 and cannot rotate in the counterclockwise direction, and the power of the first motor 700 is transmitted to the differential device 600 through the double star rows to drive the vehicle to move forward.

2. The first motor 700 and the second motor 800 drive the moving vehicle to move together, when the first motor 700 can rotate in the counterclockwise direction, the engine output shaft 110 and the first planet carrier 220 are limited by the one-way locking mechanism 910 and cannot rotate in the counterclockwise direction, the power of the first motor 700 is transmitted to the differential device 600 through the double planetary gear set, the power of the second motor 800 is also transmitted to the driven gear 500, and the two motors drive the vehicle to move together.

In some embodiments of the present invention, as shown in fig. 7 and 8, the first motor shaft 710 may also be provided with a one-way brake 930, the one-way brake 930 being engaged with the first motor shaft 710, the one-way brake 930 allowing only the first motor shaft 710 to rotate in one of a clockwise direction or a counterclockwise direction. For example, the first motor 700 may generate electricity when the first motor shaft 710 rotates in a clockwise direction.

Specifically, the one-way brake 930 may be a one-way clutch or a brake, and when the one-way brake 930 is a one-way clutch, the one-way clutch is sleeved on the first motor shaft 710, and when the first motor shaft 710 rotates in the clockwise direction, an inner circumferential surface of the one-way clutch may rotate along with the first motor shaft 710; the inner circumferential surface of the one-way clutch is fixed to prevent the first motor shaft 710 from rotating when the first motor shaft 710 rotates in the counterclockwise direction.

When the one-way brake 930 is a brake, the brake is turned off to allow the first motor shaft 710 to rotate when the first motor shaft 710 rotates in the clockwise direction; when the first motor shaft 710 rotates in a counterclockwise direction, the brake is closed to prevent the first motor shaft 710 from rotating.

According to some embodiments of the present invention, as shown in fig. 11, the hybrid system 1 further includes a locker 920, and the locker 920 is connected to the first sun gear 210 and the second ring gear 330 to control whether to apply the brake to the first sun gear 210 and the second ring gear 330.

For example, first sun gear 210 and second ring gear 330 may be integrally formed such that lock 920 is closed to prevent rotation of first sun gear 210 and second ring gear 330 and lock 920 is open to allow rotation of first sun gear 210 and second ring gear 330.

When the first motor 700 is operated and the second motor 800 and the engine 100 are not operated, the locker 920 is closed to apply the brake to the first sun gear 210 and the second ring gear 330, the power of the first motor 700 is transmitted to the first driving gear 400 and the driven gear 500 through the second planetary gear train 300, and the ratio of the rotation speed of the first motor 700 to the rotation speed of the driven gear 500 is a fixed value, which is a new pure electric mode.

When the engine 100 is operated and the first and second electric machines 700 and 800 are not operated, the locker 920 is closed to apply the brake to the first sun gear 210 and the second ring gear 330, the power of the engine 100 is transmitted to the first driving gear 400 and the driven gear 500 through the first planetary gear set 200, the rotation direction of the first driving gear 400 is opposite to that of the engine 100, and the ratio between the rotation speed of the engine 100 and the rotation speed of the driven gear 500 is fixed, which is a new reverse gear mode.

Therefore, by arranging the locking device 920, the hybrid power system 1 is newly provided with a pure electric mode and a reverse gear mode, the diversity of the hybrid power system 1 is improved, and the adaptability is higher.

A vehicle according to an embodiment of the invention, which includes the hybrid system 1 according to the above-described embodiment of the invention, is described below with reference to the drawings.

According to the vehicle provided by the embodiment of the invention, by utilizing the hybrid power system 1 provided by the embodiment of the invention, the advantages of high force transmission efficiency, low energy consumption, low processing difficulty and the like are achieved while the power distribution proportion is reasonable.

Other configurations and operations of the hybrid system 1 and the vehicle according to the embodiment of the invention are known to those skilled in the art and will not be described in detail herein.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A hybrid powertrain system, comprising:

an engine having an engine output shaft;

the first planet row comprises a first sun gear, a first planet carrier, a first gear ring and a plurality of first planet gears, the first gear ring is arranged around the first sun gear, each first planet gear is rotatably arranged on the first planet carrier and is respectively meshed with the first sun gear and the first gear ring, the first planet gears are arranged at intervals along the circumferential direction of the first sun gear, the first planet carrier is in transmission connection with the engine output shaft, and the first gear ring is connected with a first driving gear;

a second planet row, wherein the second planet row comprises a second sun gear, a second planet carrier, a second gear ring and a plurality of second planet gears, the second gear ring is arranged around the second sun gear, each second planet gear is rotatably arranged on the second planet carrier and is respectively meshed with the second sun gear and the second gear ring, the plurality of second planet gears are arranged at intervals along the circumferential direction of the second sun gear, the second sun gear is in transmission connection with the first planet carrier, and the second gear ring is in transmission connection with the first sun gear;

a driven gear engaged with the first drive gear;

the first motor is provided with a first motor shaft, and the first motor shaft is in transmission connection with the second planet carrier;

and the second motor is provided with a second motor shaft, and the second motor shaft is in transmission connection with the driven gear.

2. The hybrid system of claim 1, wherein the first carrier is located on a side of the first planetary row facing away from the second planetary row, the first carrier and the second sun gear are connected by a first structural member, the first sun gear and the second ring gear are connected by a second structural member, and the second structural member and the first sun gear are idler on the first structural member.

3. The hybrid system of claim 1, further comprising:

the differential device is connected with a reduction driving gear in a transmission manner, the differential device is connected with a reduction driven gear, and the reduction driving gear is meshed with the reduction driven gear.

4. The hybrid system of claim 1, further comprising:

a third planet row, wherein the third planet row comprises a third sun gear, a third planet carrier, a third ring gear and a plurality of third planet gears, the third ring gear is arranged around the third sun gear, each third planet gear is rotatably mounted on the third planet carrier and is respectively meshed with the third sun gear and the third ring gear, the plurality of third planet gears are arranged at intervals along the circumferential direction of the third sun gear, and the third sun gear is in transmission connection with the driven gear;

and the third planet carrier is in transmission connection with the differential device.

5. The hybrid system of claim 1, wherein the engine and the first motor are coaxially arranged and coaxially arranged with the second motor, and the second motor shaft is connected to a second driving gear and drivingly connected to the driven gear through the second driving gear.

6. The hybrid powertrain system of claim 1, wherein the engine, the first motor, and the second motor are coaxially arranged, and the second motor shaft is drivingly connected to the first drive gear and to the driven gear via the first drive gear.

7. The hybrid powertrain system of claim 6, wherein the second electric machine is positioned between the engine and the first planetary gear set, and the second electric machine is hollow on the engine output shaft.

8. The hybrid system of claim 1, further comprising:

a one-way locking mechanism engaged with the engine output shaft, the one-way locking mechanism allowing rotation of the engine output shaft in only one of a clockwise direction or a counterclockwise direction.

9. The hybrid system of claim 1, further comprising:

a locker connected to the first sun gear and the second ring gear, for controlling whether to apply braking to the first sun gear and the second ring gear.

10. A vehicle characterized by comprising the hybrid system according to any one of claims 1 to 9.

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