CN211390938U - Hybrid power device with E-CVT function and vehicle - Google Patents
Hybrid power device with E-CVT function and vehicle Download PDFInfo
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- CN211390938U CN211390938U CN201921720697.4U CN201921720697U CN211390938U CN 211390938 U CN211390938 U CN 211390938U CN 201921720697 U CN201921720697 U CN 201921720697U CN 211390938 U CN211390938 U CN 211390938U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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- Y02T10/62—Hybrid vehicles
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Abstract
The utility model discloses a hybrid power device with E-CVT function and a vehicle, wherein the device comprises an engine, a generator, a driving motor, a clutch, a first planetary assembly, a second planetary assembly, an output assembly and a differential mechanism; the engine passes through first planet subassembly with the generator is connected, driving motor with the second planet subassembly is connected, the clutch with first planet subassembly is connected, first planet subassembly with the second planet subassembly all passes through the output subassembly with differential mechanism is connected, sets up the clutch in first planet subassembly, makes the engine have direct drive function, and engine direct drive under high-speed operating mode avoids the energy to reach driving motor's secondary loss again through the generator, when needing big torque output, combines the clutch, and engine torque and driving motor moment of torsion can directly superpose and have promoted whole car dynamic nature.
Description
Technical Field
The utility model relates to the technical field of vehicles, in particular to hybrid power device and vehicle with E-CVT function.
Background
With the increase of national environmental protection, the application of the hybrid electric vehicle is more and more popular. At present, there are two popular transmission systems of hybrid electric vehicles, one is a power split hybrid system represented by toyota THS (chinese patent CN 103863310 a); another extended range hybrid system, such as the honda ilmd, is shown in fig. 1 (chinese patent CN 103298637A). The former adopts a planetary gear mechanism to introduce at least two power sources, and stepless speed change can be realized by adjusting the speed of the power sources. Through many generations of improvement, better fuel economy is obtained. However, the power source torque acts on different nodes of the torque lever of the planetary gear mechanism, the torques are balanced with each other and cannot be superposed, so that the power acceleration of the power split hybrid electric vehicle is poor.
Therefore, new technical solutions are urgently needed to solve the problems existing in the prior art.
SUMMERY OF THE UTILITY MODEL
In view of the above problems in the prior art, an object of the present invention is to provide a hybrid device and a vehicle with an E-CVT function, which can provide differential mechanisms of different operation modes.
In order to solve the technical problem, the utility model discloses a concrete technical scheme as follows:
on one hand, the utility model provides a hybrid power device with E-CVT function, including engine, generator, driving motor, clutch, first planet subassembly, second planet subassembly, output assembly and differential mechanism; the engine is connected with the generator through the first planetary assembly, the driving motor is connected with the second planetary assembly, the clutch is connected with the first planetary assembly, and the first planetary assembly and the second planetary assembly are connected with the differential through the output assembly.
Further, the first planetary assembly includes a first ring gear, a first planetary gear, a first planet carrier, a first sun gear and a first sun gear shaft, the first sun gear is disposed in the first ring gear, the first planetary gear is rotatably disposed on the first planet carrier, the first planetary gear is disposed between the first sun gear and the first ring gear and is engaged with the first sun gear and the first ring gear, and the first sun gear is fixedly connected to the first sun gear shaft.
Specifically, an input shaft of the engine is connected to the first carrier, a rotor of the generator is connected to the first sun gear, an inner rotating hub of the clutch is connected to the first carrier, and an outer rotating hub of the clutch is connected to the first ring gear.
Optionally, the input shaft of the engine is of unitary construction with the first carrier.
Optionally, the second planetary assembly includes a second ring gear, a second planetary gear, a second planet carrier, a second sun gear, and a connecting plate, the second sun gear is disposed in the second ring gear, the second planetary gear is rotatably disposed on the second planet carrier, the second planet carrier is fixedly connected to the housing of the differential, the second planetary gear is located between the second sun gear and the second ring gear and is meshed with the second sun gear and the second ring gear, the second sun gear is fixedly connected to the connecting plate, and the connecting plate is connected to the rotor of the driving motor.
Further, the output assembly comprises a first main reduction gear, a second main reduction gear and an output shaft, the first main reduction gear and the second main reduction gear are connected through the output shaft, the first main reduction gear is connected with the first gear ring and the second gear ring, and the second main reduction gear is meshed with the gear ring of the differential.
Optionally, the first planetary assembly and the second planetary assembly are coaxially arranged, wherein the first sun gear shaft and the second sun gear are coaxially connected, and the first ring gear and the second ring gear are of a unitary structure.
Optionally, the first planetary assembly and the second planetary assembly are arranged in parallel, the second planetary assembly is a bevel gear, the first planetary assembly is connected with the differential through the output assembly, and the bevel gear is connected with the differential through the output assembly.
Optionally, the rotor of the generator and the rotor of the driving motor are both hollow structures.
On the other hand, the utility model discloses still provide a vehicle, the vehicle includes the hybrid device who provides one kind above-mentioned has the E-CVT function.
Adopt above-mentioned technical scheme, a hybrid device and vehicle with E-CVT function have following beneficial effect:
1. a hybrid power device and vehicle with E-CVT function, with the clutch setting between first ring gear and first planet carrier, make the engine have the direct drive function, engine direct drive under high-speed operating mode avoids the energy to reach driving motor's secondary loss again through the generator.
2. A hybrid power device and vehicle with E-CVT function, when needing big moment of torsion output, combine the clutch, engine torque and driving motor moment of torsion can directly superpose and promoted whole car dynamic nature.
3. A hybrid power device and vehicle with E-CVT function, with engine, generator and the coaxial arrangement of driving motor, can avoid the transmission error that parallel shaft gear brought because of position error, also be favorable to generator and driving motor power transmission speed ratio to adjust simultaneously.
4. A hybrid power device and vehicle with E-CVT function, simple structure, make easily, with low costs, efficient, promote whole car carryover nature.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiment or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a schematic block diagram of a prior art hybrid powertrain system;
fig. 2 is a schematic structural view of a hybrid power device according to the present invention;
fig. 3 is a schematic structural diagram of a hybrid power device according to an embodiment of the present invention.
In the figure: 1-engine, 2-generator, 3-drive motor, 4-clutch, 5-first planetary assembly, 6-second planetary assembly, 7-output assembly, 8-differential, 51-first ring gear, 52-first planet gear, 53-planet carrier, 54-first sun gear, 55-first sun gear shaft, 61-second ring gear, 62-second planet gear, 63-second planet carrier, 64-second sun gear, 65-connecting plate, 71-first main reducing gear, 72-second main reducing gear, 73-output shaft.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, apparatus, article, or device that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or device.
Example 1
In the conventional hybrid differential shown in fig. 1, since the power source torques act on different nodes of the torque lever of the planetary gear mechanism, the torques are balanced and cannot be superposed, so that the power acceleration of the power split hybrid vehicle is poor. In order to solve the above-described existing problems, an embodiment of the present specification provides a hybrid device that can increase the power acceleration performance of an automobile.
Specifically, as shown in fig. 2, the apparatus includes an engine 1, a generator 2, a drive motor 3, a clutch 4, a first planetary assembly 5, a second planetary assembly 6, an output assembly 7, and a differential 8; the engine 1 is connected with the generator 2 through the first planetary assembly 4, the driving motor 3 is connected with the second planetary assembly 6, the clutch 4 is connected with the first planetary assembly 5, the first planetary assembly 5 and the second planetary assembly 6 are coaxially arranged, and the first planetary assembly 5 and the second planetary assembly 6 are both connected with the differential mechanism 8 through the output assembly 7.
In some embodiments, the first planetary assembly 5 includes a first ring gear 51, a first planetary gear 52, a first planet carrier 53, a first sun gear 54, and a first sun gear shaft 55, the first sun gear 54 is disposed within the first ring gear 51, the first planetary gear 52 is rotatably disposed on the first planet carrier 53, the first planetary gear 52 is disposed between the first sun gear 54 and the first ring gear 51 and is engaged with the first sun gear 54 and the first ring gear 51, and the first sun gear 54 is fixedly connected to the first sun gear shaft 55.
The input shaft of the engine 1 is connected to the first carrier 53, optionally, the input shaft of the engine 1 and the carrier 53 are integrated, so that the stability of the connection structure between the input shaft of the engine 1 and the first carrier 53 can be ensured, of course, the connection structure can also be performed by arranging a mechanical structure, meanwhile, the rotor of the generator 2 is connected to the first sun gear 54, the inner rotating hub of the clutch 4 is connected to the first carrier 53, the outer rotating hub of the clutch 4 is connected to the first ring gear 51, and by arranging the clutch 4 between the first ring gear 51 and the first carrier 53, the engine 1 can have a direct driving function, that is, the engine is directly driven under a high-speed working condition, so that the secondary loss of energy from the generator to the driving motor is avoided.
In addition, in some embodiments, the second planetary assembly 6 includes a second ring gear 61, a second planetary gear 62, a second planet carrier 63, a second sun gear 64, and a connecting plate 65, the second sun gear 64 is disposed in the second ring gear 61, the second planetary gear 62 is rotatably disposed on the second planet carrier 63, the second planetary gear 62 is located between the second sun gear 64 and the second ring gear 61 and is meshed with the second sun gear 64 and the second ring gear 61, and the second sun gear 64 is fixedly connected to the connecting plate 65.
The second planet carrier 63 is fixedly connected to the housing of the differential 8, and the connecting plate 65 is connected to the rotor of the driving motor 3.
In some embodiments, the output assembly 7 comprises a first main reduction gear 71, a second main reduction gear 72 and an output shaft 73, the first main reduction gear 71 and the second main reduction gear 72 are connected by the output shaft 73, the first main reduction gear 71 is connected with the first ring gear 51 and the second ring gear 61, and the second main reduction gear 72 is meshed with the ring gear of the differential 8.
In some embodiments, the first planetary assembly 5 and the second planetary assembly 6 may be coaxially disposed, that is, the first sun gear shaft 55 and the second sun gear 64 are coaxially connected, and the first ring gear 51 and the second ring gear 61 are an integral structure, so that the engine 1, the generator 2 and the driving motor 3 may adopt a coaxial arrangement, and a transmission error caused by a position error of a parallel shaft gear is also avoided, and meanwhile, the first ring gear 51 and the second ring gear 61 are connected, specifically, the first ring gear 51 and the second ring gear 61 are close to each other in position, but do not affect each other during operation.
It should be noted that the rotors of the generator 2 and the driving motor 3 may be hollow structures, the clutch 4 may also be disposed in the rotor of the generator 2, the first planetary assembly 5 may also be disposed in the rotor of the generator 2, and the second planetary assembly 6 is disposed in the rotor of the driving motor 3, so that the sizes of the first planetary assembly 5, the second planetary assembly 6, and the clutch 4 may be set according to the sizes of the rotor of the generator 2 and the rotor of the driving motor 3.
Through the hybrid power device that above-mentioned provided, low-speed and city operating mode, when the battery electric quantity is higher, can realize pure electric drive, compare with transmission fuel automobile, under low-speed and start-stop operating mode, can avoid the emission and the noise pollution that engine idling and low-speed operation uneconomic region brought, promote whole car economy.
Meanwhile, multiple working modes can be selected according to different road conditions and vehicle conditions, such as a pure electric drive (EV) mode, an engine drive mode, an electric control continuously variable transmission (E-CVT) drive mode, a parallel drive mode and a braking energy recovery mode;
the operation method of the EV mode comprises the following steps: the clutch 4 is controlled to be disconnected, a power battery (not shown) provides energy to drive the motor 3 to work, the second sun gear 64 is driven to rotate, power is transmitted to the differential mechanism 8 through the second gear ring 61 and the output assembly 7, wheels are driven, and the vehicle is driven to move forward or the function of backing is achieved.
The operation method of the engine driving mode comprises the following steps: the clutch 4 is controlled to be combined, the engine provides kinetic energy, power reaches the differential 8 through the input shaft of the engine 1, the first planet carrier 53, the clutch 4 and the first gear ring 51 and the output assembly 7, and under the high-speed working condition, the direct drive function of the engine is used, and the engine is at the economic rotating speed, so that the fuel economy is realized.
The operation method of the E-CVT driving mode comprises the following steps: controlling the clutch 4 to be disconnected, and adjusting the working point of the engine 1 through the generator 2 to enable the engine 1 to work at the optimal working point, wherein at the moment, part of power of the engine 1 is used for generating power by the generator 2 (can be used for driving a motor to drive or charging a battery), and part of power is used for driving a vehicle to move forwards;
specifically, the E-CVT drive mode consists of two power transmission routes: an adjustment route and a working route, wherein the adjustment route is as follows: the power is generated by the engine 1 and reaches the generator 2 through the first planet carrier 53 and the first sun gear 53, and the electric energy generated by the rotation of the rotor of the generator 2 is used for the work of the driving motor 3 or the charging of a power battery; the working route is as follows: power is transmitted by the engine 1, reaches the differential gear 8 through the first planet carrier 53 and the first gear ring 51, so as to drive wheels, and under low-speed and urban working conditions, the torque and rotating speed output of the engine 1 can be regulated through the generator 2, so that the engine 1 is in an optimal fuel economy or emission working point and has optimal fuel economy or emission characteristics.
The operation method of the parallel driving mode comprises the following steps: the clutch 4 is controlled to be closed, the engine 1 and the driving motor 3 work simultaneously to provide energy, power is coupled at the differential mechanism and then transmitted to the wheels, and under the working conditions of climbing and acceleration, because single energy cannot meet the power requirement, the engine and the driving motor provide torque together to meet the driving requirement.
The braking energy recovery operation method comprises the following steps: the clutch 4 is controlled to be disconnected, when the vehicle brakes and decelerates, energy is transmitted from wheels, a gear ring of the differential mechanism 8 and the output assembly 7 to the rotor of the driving motor 3, so that the energy is recovered in the power battery, under the braking and decelerating working condition, the kinetic energy of the vehicle is converted into electric energy through the energy recovery function and stored in the battery for next electric driving, the energy loss is reduced, and the endurance mileage is prolonged.
On the basis of the above-described embodiment, an embodiment of the present specification further provides a hybrid device having an E-CVT function, and specifically, as shown in fig. 3, the first planetary assembly and the second planetary assembly are arranged in parallel, the first planetary assembly 5 is connected to the differential 8 through the output assembly 7, and the second planetary assembly 6 is connected to the differential 8 through the output assembly 7, so that the driving motor is arranged in parallel with the engine, and by this arrangement, the differential axial arrangement size and the driving motor meshing loss can be further reduced. The working principle is basically consistent with the above embodiments, and thus, the details are not repeated.
In some embodiments, the second planetary assembly may be a bevel gear, and the driving motor is connected to the output assembly through the bevel gear, so that the complexity of the structure can be reduced, and the operation efficiency of the machine can be improved.
In another aspect, an embodiment of the present specification further provides a vehicle including the hybrid power device having an E-CVT function provided above.
The hybrid power device with the E-CVT function and the vehicle have the following beneficial effects that:
1) a hybrid power device and vehicle with E-CVT function, with the clutch setting between first ring gear and first planet carrier, make the engine have the direct drive function, engine direct drive under high-speed operating mode avoids the energy to reach driving motor's secondary loss again through the generator.
2) A hybrid power device and vehicle with E-CVT function, when needing big moment of torsion output, combine the clutch, engine torque and driving motor moment of torsion can directly superpose and promoted whole car dynamic nature.
3) A hybrid power device and vehicle with E-CVT function, with engine, generator and the coaxial arrangement of driving motor, can avoid the transmission error that parallel shaft gear brought because of position error, also be favorable to generator and driving motor power transmission speed ratio to adjust simultaneously.
4) A hybrid power device and vehicle with E-CVT function, simple structure, make easily, with low costs, efficient, promote whole car carryover nature. The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention, as will be apparent to those skilled in the art, the invention is not limited to the details of the foregoing exemplary embodiment, but rather is embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. A hybrid power device with an E-CVT function is characterized by comprising an engine (1), a generator (2), a driving motor (3), a clutch (4), a first planetary assembly (5), a second planetary assembly (6), an output assembly (7) and a differential (8); the engine (1) is connected with the generator (2) through the first planetary assembly (5), the driving motor (3) is connected with the second planetary assembly (6), the clutch (4) is connected with the first planetary assembly (5), and the first planetary assembly (5) and the second planetary assembly (6) are connected with the differential mechanism (8) through the output assembly (7).
2. The hybrid device with an E-CVT function according to claim 1, characterized in that the first planetary assembly (5) includes a first ring gear (51), first planetary gears (52), a first carrier (53), a first sun gear (54), and a first sun gear shaft (55), the first sun gear (54) being provided in the first ring gear (51), the first planetary gears (52) being rotatably provided on the first carrier (53), the first planetary gears (52) being located between the first sun gear (54) and the first ring gear (51) and meshing with the first sun gear (54) and the first ring gear (51), the first sun gear (54) being fixedly connected to the first sun gear shaft (55).
3. The hybrid device having an E-CVT function according to claim 2, characterized in that an input shaft of the engine (1) is connected to the first carrier (53), a rotor of the generator (2) is connected to the first sun gear (54), an inner rotating hub of the clutch (4) is connected to the first carrier (53), and an outer rotating hub of the clutch (4) is connected to the first ring gear (51).
4. A hybrid device having an E-CVT function as claimed in claim 3, characterized in that an input shaft of the engine (1) is of a unitary structure with the first carrier (53).
5. The hybrid device with an E-CVT function according to claim 2 characterized in that said second planetary assembly (6) includes a second ring gear (61), second planetary gears (62), a second carrier (63), a second sun gear (64) and a web (65), said second sun gear (64) being disposed within said second ring gear (61), said second planetary gears (62) being rotatably disposed on said second carrier (63), said second carrier (63) being fixedly connected with a housing of said differential (8), said second planetary gears (62) being located between said second sun gear (64) and said second ring gear (61) and meshing with said second sun gear (64) and said second ring gear (61), said second sun gear (64) being fixedly connected with said web (65), the connecting plate (65) is connected with a rotor of the driving motor (3).
6. The hybrid device with an E-CVT function according to claim 5, characterized in that the output assembly (7) includes a first main reduction gear (71), a second main reduction gear (72), and an output shaft (73), the first main reduction gear (71) and the second main reduction gear (72) being connected through the output shaft (73), the first main reduction gear (71) being connected with the first ring gear (51) and the second ring gear (61), the second main reduction gear (72) being meshed with a ring gear of the differential (8).
7. The hybrid device having an E-CVT function according to claim 5, characterized in that the first planetary assembly (5) and the second planetary assembly (6) are coaxially arranged, wherein the first sun gear shaft (55) and the second sun gear (64) are coaxially connected, and the first ring gear (51) and the second ring gear (61) are an integral structure.
8. The hybrid device having an E-CVT function according to claim 2, characterized in that the first planetary assembly (5) and the second planetary assembly (6) are arranged in parallel, and the second planetary assembly (6) is a helical gear, the first planetary assembly (5) being connected to the differential (8) through the output assembly (7), and the helical gear being connected to the differential (8) through the output assembly (7).
9. The hybrid device having an E-CVT function as recited in claim 2, characterized in that the rotor of the generator (2) and the rotor of the drive motor (3) are both hollow structures.
10. A vehicle characterized by comprising a hybrid power device having an E-CVT function as recited in any one of claims 1 through 9.
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| CN201921720697.4U CN211390938U (en) | 2019-10-15 | 2019-10-15 | Hybrid power device with E-CVT function and vehicle |
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| CN201921720697.4U CN211390938U (en) | 2019-10-15 | 2019-10-15 | Hybrid power device with E-CVT function and vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113002286A (en) * | 2021-02-05 | 2021-06-22 | 浙江吉利控股集团有限公司 | Dual-motor hybrid power transmission system and hybrid electric vehicle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113002286A (en) * | 2021-02-05 | 2021-06-22 | 浙江吉利控股集团有限公司 | Dual-motor hybrid power transmission system and hybrid electric vehicle |
| CN113002286B (en) * | 2021-02-05 | 2023-02-21 | 浙江吉利控股集团有限公司 | Dual-motor hybrid power transmission system and hybrid electric vehicle |
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