CN217532544U - Power assembly of hybrid electric vehicle and vehicle - Google Patents
Power assembly of hybrid electric vehicle and vehicle Download PDFInfo
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- CN217532544U CN217532544U CN202221357775.0U CN202221357775U CN217532544U CN 217532544 U CN217532544 U CN 217532544U CN 202221357775 U CN202221357775 U CN 202221357775U CN 217532544 U CN217532544 U CN 217532544U
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Abstract
The present disclosure relates to the field of hybrid vehicles, and more particularly, to a powertrain and a vehicle for a hybrid vehicle. The power assembly of the hybrid electric vehicle comprises: a power output mechanism and a speed change mechanism; the speed change mechanism comprises a speed change mechanism input shaft, a speed change mechanism output shaft, a third planet row and a gear shift assembly; the gear ring of the third planetary row is connected with the transmission shell, the planet carrier of the third planetary row is connected with the output shaft of the speed change mechanism, and the input shaft of the speed change mechanism is respectively connected with the planet carrier and the sun gear of the third planetary row through the gear shifting assembly. According to the power assembly of the hybrid electric vehicle, due to the arrangement of the third planetary gear set, when the vehicle runs at a low speed, the effect of providing larger torque for the planet carrier of the third planetary gear set can be achieved by utilizing the gear ring of the third planetary gear set fixed by the transmission shell and the sun gear driven by the power output mechanism, and therefore larger torque can be provided for the vehicle when the vehicle runs at a low speed.
Description
Technical Field
The present disclosure relates to hybrid vehicles, and more particularly to a hybrid vehicle having a powertrain.
Background
Driven by energy and environmental pressures and technical limitations, hybrid vehicles are becoming increasingly popular with consumers and manufacturers. The hybrid electric vehicle has the advantages of the traditional vehicle and the pure electric vehicle as a transition scheme for developing the pure electric vehicle, and is a new energy vehicle with practical value at present.
The powertrain of the hybrid vehicle is generally formed by combining an engine, a first motor and a second motor with a planetary gear mechanism, and providing the power of the engine, the first motor and the second motor to a driving shaft of the vehicle, so as to realize the driving of the vehicle by the hybrid power. The planetary gear mechanism has compact structure, high transmission efficiency and large transmission ratio, is easy to realize the synthesis and distribution of power, and is very suitable for the power coupling device of the hybrid electric vehicle.
At present, in order to obtain a larger torque, a plurality of groups of planet rows are often arranged to realize the effects of reducing the speed and increasing the torque, and although the stability of starting of the vehicle in a heavy-load mode can be ensured, the vehicle cannot meet the driving requirement at the highest speed per hour.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the present disclosure provides a powertrain of a hybrid vehicle and a vehicle.
In a first aspect, the present disclosure provides a powertrain of a hybrid vehicle, comprising: a power output mechanism and a speed change mechanism;
the speed change mechanism comprises a speed change mechanism input shaft, a speed change mechanism output shaft, a third planet row and a gear shift assembly;
the gear ring of the third planetary row is connected with the transmission housing, the planet carrier of the third planetary row is connected with the output shaft of the speed change mechanism, and the input shaft of the speed change mechanism is respectively connected with the planet carrier and the sun gear of the third planetary row through the gear shift assembly;
the power output mechanism comprises a power assembly and a power output mechanism output shaft, the power output mechanism output shaft is connected with the speed change mechanism input shaft, and the power assembly is used for providing driving force.
Optionally, the power assembly includes an engine, a first motor, a second motor and a first planetary gear set;
a transmission shaft of the engine is connected with a planet carrier of the first planet row, a transmission shaft of the first motor is connected with a sun gear of the first planet row, and a gear ring of the first planet row is connected with an input shaft of the speed change mechanism;
and the transmission shaft of the second motor is connected with the input shaft of the speed change mechanism.
Optionally, the power assembly includes an engine, a first electric machine, a second electric machine, a first planetary gear train and a C0 clutch;
a transmission shaft of the engine is connected with a planet carrier of the first planetary row, the transmission shaft of the engine is connected with the input shaft of the speed change mechanism through the C0 clutch, a transmission shaft of the first motor is connected with a sun gear of the first planetary row, and a gear ring of the first planetary row is connected with the transmission shell;
and a transmission shaft of the second motor is connected with an input shaft of the speed change mechanism.
Optionally, the planetary gear set further comprises a second planetary gear set, a sun gear of the second planetary gear set is connected with a transmission shaft of the second motor, a ring gear of the second planetary gear set is connected with the transmission housing, and a planet carrier of the second planetary gear set is connected with the input shaft of the speed change mechanism.
Optionally, the transmission housing includes a first chamber and a second chamber, the first planetary row and the second planetary row are disposed in the first chamber, and the variator is disposed in the second chamber.
Optionally, a one-way clutch is arranged between the transmission shaft of the engine and the planet carrier of the first planetary row.
Optionally, the gear shifting assembly is a synchronizer, the synchronizer body is connected with the input shaft of the speed changing mechanism, and two sides of the synchronizer are connected with the sun gear and the planet carrier of the third planet row respectively.
Optionally, the shift assembly comprises two clutches, wherein one clutch is used for connecting the transmission input shaft and the planet carrier of the third planetary row, and the other clutch is used for connecting the transmission input shaft and the sun gear of the third planetary row.
In a second aspect, the present disclosure provides a vehicle comprising a powertrain as described above.
Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:
according to the power assembly of the hybrid electric vehicle, through the arrangement of the third planetary row, when the vehicle runs at a low speed, the effect of providing larger torque for the planet carrier of the third planetary row is achieved by utilizing the gear ring of the third planetary row fixed by the transmission shell and the sun gear driven by the power output mechanism, so that larger torque is provided for the vehicle when the vehicle runs at the low speed; meanwhile, when the planet carrier of the third planet row is directly connected with the power output mechanism, the sun gear of the third planet row is ensured to be in an idle running state while the torque is directly output, the effect of improving the rotating speed of the planet gear of the third planet row is achieved, and the output rotating speed is further improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present disclosure, the drawings used in the embodiments or technical solutions in the prior art description will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic structural diagram of a powertrain of a hybrid electric vehicle according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a powertrain of a hybrid vehicle according to a second embodiment of the disclosure;
FIG. 3 is a schematic structural diagram of a powertrain of a hybrid vehicle according to a third embodiment of the present disclosure;
FIG. 4 is a schematic structural diagram of a one-way clutch disposed in a powertrain of a hybrid vehicle according to an embodiment of the disclosure;
fig. 5 is a logic diagram of a shift of a powertrain of a hybrid vehicle according to an embodiment of the disclosure.
11, an engine; 12. a first motor; 13. a second motor; 21. a first planet row; 22. a second planet row; 23. a third planet row; 3. a shift assembly; 31. a first clutch; 32. a second clutch; 4. a transmission housing; 5. a one-way clutch; 6. and a C0 clutch.
Detailed Description
In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that the embodiments and features of the embodiments of the present disclosure may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.
Driven by energy and environmental pressures and technical limitations, hybrid vehicles are becoming increasingly popular with consumers and manufacturers. The hybrid electric vehicle has the advantages of both the traditional vehicle and the pure electric vehicle as a transition scheme for developing the pure electric vehicle, and is a new energy vehicle with practical value at present.
The powertrain of the hybrid vehicle is generally formed by combining an engine, a first motor and a second motor with a planetary gear mechanism, and providing the power of the engine, the first motor and the second motor to a driving shaft of the vehicle, so as to realize the driving of the vehicle by the hybrid power. The planetary gear mechanism has compact structure, high transmission efficiency and large transmission ratio, is easy to realize the synthesis and distribution of power, and is very suitable for the power coupling device of the hybrid electric vehicle.
At present, in order to obtain a larger torque, a plurality of groups of planet rows are often arranged to realize the effects of speed reduction and torque increase, and although the stability of starting of the vehicle in a heavy-load mode can be ensured, the vehicle cannot meet the driving requirement at the highest speed per hour.
Based on this, the embodiment provides a powertrain of a hybrid electric vehicle and a vehicle, through the arrangement of the third planetary gear set, when the vehicle runs at a low speed, the ring gear of the third planetary gear set fixed by the transmission housing and the sun gear driven by the power output mechanism are utilized to realize the effect of providing a larger torque for the planet carrier of the third planetary gear set, so as to provide a larger torque for the vehicle running at a low speed; meanwhile, when the planet carrier of the third planet row is directly connected with the power output mechanism, the sun gear of the third planet row is ensured to be in an idle running state while the torque is directly output, the effect of improving the rotating speed of the planet gear of the third planet row is achieved, and the output rotating speed is further improved. This is illustrated in detail by the following specific examples:
referring to fig. 1 to 5, a powertrain of a hybrid vehicle according to the present embodiment includes: a power output mechanism and a speed change mechanism; the speed change mechanism comprises a speed change mechanism input shaft, a speed change mechanism output shaft, a third planet row 23 and a gear shift assembly 3; the gear ring of the third planetary row 23 is connected with the transmission housing 4, the planet carrier of the third planetary row 23 is connected with the output shaft of the speed change mechanism, and the input shaft of the speed change mechanism is respectively connected with the planet carrier and the sun gear of the third planetary row 23 through the gear shift assembly 3; the power output mechanism comprises a power assembly and a power output mechanism output shaft, the power output mechanism output shaft is connected with the speed change mechanism input shaft, and the power assembly is used for providing driving force.
With the third planetary gear set 23, when the vehicle is running at a low speed, the ring gear of the third planetary gear set 23 fixed by the transmission housing 4 and the sun gear driven by the power output mechanism are utilized to realize the effect of providing a larger torque for the carrier of the third planetary gear set 23, so that the larger torque is provided for the vehicle when the vehicle is running at a low speed; meanwhile, when the planet carrier of the third planet row 23 is directly connected with the power output mechanism, the torque can be directly output, and meanwhile, the sun gear of the third planet row 23 is ensured to be in an idle running state, so that the effect of increasing the rotating speed of the planet gear of the third planet row 23 is achieved, and the output rotating speed is further increased.
With continued reference to fig. 1, the power assembly includes an engine 11, a first electric machine 12, a second electric machine 13, and a first planetary gear set 21; a transmission shaft of the engine 11 is connected with a planet carrier of the first planet row 21, a transmission shaft of the first motor 12 is connected with a sun gear of the first planet row 21, and a gear ring of the first planet row 21 is connected with an input shaft of the speed change mechanism; the transmission shaft of the second motor 13 is connected with the input shaft of the speed change mechanism; by the arrangement, when the power output mechanism works, the first motor 12 can complete the speed regulation work of the engine 11, so that the engine 11 can be always kept in an economic rotating speed range during working, and the economy of a vehicle is improved.
With continued reference to fig. 2, the power assembly includes an engine 11, a first electric machine 12, a second electric machine 13, a first planetary gear set 21, and a C0 clutch 6; a transmission shaft of the engine 11 is connected with a planet carrier of the first planetary row 21, the transmission shaft of the engine 11 is connected with an input shaft of the speed change mechanism through a C0 clutch 6, a transmission shaft of the first motor 12 is connected with a sun gear of the first planetary row 21, and a gear ring of the first planetary row 21 is connected with the transmission shell 4; the transmission shaft of the second motor 13 is connected with the input shaft of the speed change mechanism; through the arrangement of the C0 clutch 6, when the second motor 13 works alone, the power transmission paths of the engine 11 and the first motor 12 can be disconnected, so that the control difficulty of the engine 11 and the first motor 12 is reduced, the reverse rotation of the vehicle driven by the second motor 13 is easier to realize, and the cost of the whole set of power assembly is remarkably reduced.
With continued reference to fig. 1, 2 and 3, the powertrain of the hybrid vehicle further includes a second planetary gear set 22, the sun gear of the second planetary gear set 22 is connected to the transmission shaft of the second electric machine 13, the ring gear of the second planetary gear set 22 is connected to the transmission housing 4, and the planet carrier of the second planetary gear set 22 is connected to the input shaft of the speed change mechanism; through the setting of second planet row 22, can utilize the ring gear of second planet row 22 to be connected with derailleur housing 4 to the transmission shaft of second motor 13 is connected with the sun gear of second planet row 22, utilizes the mode of planet carrier output, for second motor 13 provides the effect that the speed reduction increased the torsion at the during operation, thereby can choose for use the second motor 13 that the moment of torsion is littleer, thereby further reduce whole car cost, can also reduce the occupation space of this power assembly.
In some embodiments, the transmission housing 4 includes a first chamber in which the first planetary row 21 and the second planetary row 22 are disposed and a second chamber in which the variator is disposed; by the arrangement, the situation that the structure in the second chamber is too compact to influence the clutch structure in the speed change mechanism to establish oil pressure can be prevented, the structure of the whole power assembly can be conveniently produced in a modularized manner, the structure in the first chamber or the structure in the second chamber can be independently upgraded and transformed or replaced, and the universality of the power assembly is remarkably improved; it should be noted that the first planetary row 21 and the second planetary row 22 can be disposed in close contact in the first chamber, and this arrangement can reduce the volume of the structure for connecting the first planetary row 21 and the second planetary row 22, thereby making the structure of the speed change mechanism more compact and reducing the production cost.
In some embodiments, a one-way clutch 5 is provided between the drive shaft of the engine 11 and the planet carrier of the first planetary row 21; through the setting of one-way clutch 5, can prevent that engine 11 from taking place the reversal when second motor 13 is worked to prevent that engine 11 from taking place wearing and tearing because of idle running, can also reduce the noise level of whole car simultaneously.
Continuing to refer to fig. 3, the shifting unit 3 is a synchronizer, the synchronizer body is connected with the transmission shaft of the second motor 13, and two sides of the synchronizer are respectively connected with the planet carrier and the sun gear of the third planet row 23; when the synchronizer is used as the gear shifting assembly 3, a special hydraulic system is not required to be arranged in the transmission shell 4, the cost can be effectively reduced, the control mode is simpler, and the economical efficiency and the practicability of the power assembly are obviously improved.
In some embodiments, the shifting assembly 3 includes a first clutch 31 and a second clutch 32, the first clutch 31 is used for connecting the transmission shaft of the second electric machine 13 and the sun gear of the third planetary row 23, the second clutch 32 is used for connecting the transmission shaft of the second electric machine 13 and the planet carrier of the third planetary row 23; when using two clutches to come as gearshift 3, can more accurate faster realization shift action, obviously improve the reliability that shift efficiency and gear kept.
The engine 11 can be driven to complete the start by the first motor 12 and the first planetary gear set 21.
With continued reference to fig. 1 to 5, the shifting of the shift element to the R-engaged state in fig. 5 means that the shift assembly 3 is shifted to the first gear state, i.e. the sun gear of the third planetary gear set 23 is connected to the transmission shaft of the second electric machine 13; the shift element in fig. 5 is shifted to the L-engaged state, i.e. the shift assembly 3 is shifted to the second gear, i.e. the planet carrier of the third planet row 23 is connected to the transmission shaft of the second electric machine 13; when the shift assembly 3 is the first clutch 31 and the second clutch 32, the shift assembly 3 is shifted to the first gear state, i.e., the second clutch 32 is engaged, and the shift assembly 3 is shifted to the second gear state, i.e., the first clutch 31 is engaged.
In a second aspect, the present disclosure provides a vehicle comprising a powertrain as described above.
The specific implementation manner and implementation principle are the same as those of the above embodiments, and the same or similar technical effects can be brought, which are not described herein again, and reference may be made to the description of the powertrain embodiment of the hybrid electric vehicle.
It is noted that, in this document, relational terms such as "first" and "second," and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present disclosure, which enable those skilled in the art to understand or practice the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A powertrain for a hybrid vehicle, comprising: a power output mechanism and a speed change mechanism;
the speed change mechanism comprises a speed change mechanism input shaft, a speed change mechanism output shaft, a third planet row (23) and a gear shift assembly (3);
the gear ring of the third planetary row (23) is connected with a transmission housing (4), the planet carrier of the third planetary row (23) is connected with the transmission mechanism output shaft, and the transmission mechanism input shaft is respectively connected with the planet carrier and the sun gear of the third planetary row (23) through the gear shifting assembly (3);
the power output mechanism comprises a power assembly and a power output mechanism output shaft, the power output mechanism output shaft is connected with the speed change mechanism input shaft, and the power assembly is used for providing driving force.
2. The powertrain of a hybrid vehicle according to claim 1, characterized in that the power components include an engine (11), a first electric machine (12), a second electric machine (13), and a first planetary gear set (21);
the transmission shaft of the engine (11) is connected with the planet carrier of the first planet row (21), the transmission shaft of the first motor (12) is connected with the sun gear of the first planet row (21), and the gear ring of the first planet row (21) is connected with the input shaft of the speed change mechanism;
and a transmission shaft of the second motor (13) is connected with the input shaft of the speed change mechanism.
3. The powertrain of a hybrid vehicle according to claim 1, characterized in that the power components include an engine (11), a first electric machine (12), a second electric machine (13), a first planetary gear set (21) and a C0 clutch (6);
the transmission shaft of the engine (11) is connected with the planet carrier of the first planet row (21), the transmission shaft of the engine (11) is connected with the input shaft of the speed change mechanism through the C0 clutch (6), the transmission shaft of the first motor (12) is connected with the sun gear of the first planet row (21), and the gear ring of the first planet row (21) is connected with the transmission shell (4);
and a transmission shaft of the second motor (13) is connected with the input shaft of the speed change mechanism.
4. A hybrid vehicle powertrain according to any one of claims 2 or 3, further comprising a second planetary gear set (22), wherein a sun gear of the second planetary gear set (22) is connected to a transmission shaft of the second electric machine (13), a ring gear of the second planetary gear set (22) is connected to the transmission housing (4), and a carrier of the second planetary gear set (22) is connected to the transmission input shaft.
5. The powertrain of a hybrid vehicle according to claim 4, characterized in that the transmission housing (4) includes a first chamber in which the first planetary row (21) and the second planetary row (22) are disposed and a second chamber in which the speed change mechanism is disposed.
6. A hybrid vehicle powertrain according to any one of claims 2 or 3, characterised in that a one-way clutch (5) is provided between the drive shaft of the engine (11) and the planet carrier of the first planetary row (21).
7. The powertrain of a hybrid vehicle according to claim 1, characterized in that the shifting assembly (3) is a synchronizer, the synchronizer body is connected with the input shaft of the speed change mechanism, and both sides of the synchronizer are respectively connected with the sun gear and the planet carrier of the third planetary row (23).
8. Hybrid vehicle powertrain according to claim 1, characterized in that the shifting assembly (3) comprises two clutches, one of which is used to connect the variator input shaft to the planet carrier of the third planetary row (23) and the other of which is used to connect the variator input shaft to the sun gear of the third planetary row (23).
9. A vehicle comprising a powertrain as claimed in any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221357775.0U CN217532544U (en) | 2022-05-31 | 2022-05-31 | Power assembly of hybrid electric vehicle and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221357775.0U CN217532544U (en) | 2022-05-31 | 2022-05-31 | Power assembly of hybrid electric vehicle and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217532544U true CN217532544U (en) | 2022-10-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221357775.0U Active CN217532544U (en) | 2022-05-31 | 2022-05-31 | Power assembly of hybrid electric vehicle and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217532544U (en) |
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2022
- 2022-05-31 CN CN202221357775.0U patent/CN217532544U/en active Active
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