CN112659884A - Automobile hybrid power system - Google Patents
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- CN112659884A CN112659884A CN202110049013.8A CN202110049013A CN112659884A CN 112659884 A CN112659884 A CN 112659884A CN 202110049013 A CN202110049013 A CN 202110049013A CN 112659884 A CN112659884 A CN 112659884A
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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
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- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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Abstract
本发明提供了一种汽车混合动力系统，属于汽车技术领域。它解决现有汽车发动机介入和退出时的抖动、燃油经济性差、动力电池电量不足情况下倒挡动力不足、变速器轴向距离过长难于布置等问题。本汽车混合动力系统包括发动机、发电机、行星轮系、动力传动轴以及与动力传动轴传动连接的驱动电机，发动机的输出轴与齿圈传动连接，发电机的转轴与太阳轮传动连接，本混合动力系统还包括太阳轮离合器、行星架离合器和能够对行星架进行制动的制动器，行星架离合器用于使行星架与动力传动轴之间实现传动连接或断开连接，太阳轮离合器用于使太阳轮与动力传动轴之间实现传动连接或断开连接。本发明具有NVH性能好、燃油经济性好、倒挡动力性强等优点。
The invention provides an automobile hybrid power system, which belongs to the technical field of automobiles. It solves the problems of jitter when the existing automobile engine intervenes and exits, poor fuel economy, insufficient power for reverse gear when the power battery is insufficient, and the transmission axial distance is too long and difficult to arrange. The hybrid power system of the vehicle includes an engine, a generator, a planetary gear train, a power transmission shaft, and a drive motor connected to the power transmission shaft. The output shaft of the engine is connected to the ring gear, and the rotating shaft of the generator is connected to the sun gear. The hybrid system also includes a sun gear clutch, a planet carrier clutch and a brake that can brake the planet carrier. The planet carrier clutch is used to connect or disconnect the transmission between the planet carrier and the power transmission shaft. The sun gear clutch is used for Make the transmission connection or disconnection between the sun gear and the power transmission shaft. The invention has the advantages of good NVH performance, good fuel economy, strong reverse gear power and the like.
Description
Technical Field
The invention belongs to the technical field of automobiles, and relates to an automobile hybrid power system.
Background
In recent years, with the shortage of global petroleum resources and increasingly strict national oil consumption and emission regulations, the demand for researching more environment-friendly, efficient and energy-saving automobile power systems is urgent. The hybrid vehicle is a branch of new energy technology, has the advantages of better fuel economy, low emission and the like, and becomes a competitive research and development novel vehicle. The key to a hybrid vehicle is the hybrid system, whose performance is directly related to the overall performance of the hybrid vehicle.
A hybrid transmission and a hybrid vehicle as disclosed in the chinese patent document (application No. 201880086918.9; application publication No. CN111615466A) comprise a first input shaft, a second input shaft, an output shaft, a clutch K1 and a planetary gear mechanism comprising a sun gear, a planet carrier and a ring gear, wherein the first input shaft is connected with the planet carrier in a rotationally fixed manner, the second input shaft is connected with the sun gear in a rotationally fixed manner, the output shaft is connected with the ring gear in a rotationally fixed manner, the clutch K1 has a first side and a second side that can be engaged with and disengaged from each other, the first side and the second side are connected with the planet carrier and the ring gear in a rotationally fixed manner, respectively, or are connected with the sun gear and the ring gear in a rotationally fixed manner, respectively. The hybrid power system has the following defects:
1. the hybrid power system only has a speed ratio directly driven by the internal combustion engine, so that the internal combustion engine can only be used for directly driving the automobile to run in a relatively limited speed range, and when the automobile runs in other speed ranges such as a medium speed range, the generator and the traction motor usually need to participate in work, at the moment, part of the power of the internal combustion engine is used for generating electricity by the generator, the electric energy of the generator is consumed by the traction motor, and energy loss exists in each energy conversion process, so that the energy utilization rate is reduced, and the fuel economy is poor.
2. When the wheels are in reverse gear, the traction motor needs to be driven in a reverse rotation mode, and at the moment, if the power battery is insufficient in electric quantity, the internal combustion engine needs to work to drive the generator to generate electricity. And the output shaft rotates reversely in the reverse gear process, so that reverse torque is generated, and at the moment, due to the characteristic of the rotating speed of the planetary mechanism, the generator is required to have a high rotating speed to counteract the reverse torque. However, since the generator typically has a range of rotational speeds, the powertrain can only be charged at low reverse speeds. Further, when charging is performed in the reverse state, the torque of the internal combustion engine to the ring gear is in the forward direction and in the reverse direction to the torque of the traction motor, and therefore, the reverse torque is also reduced, the reverse dynamic performance is insufficient, and the fuel consumption is high.
3. When the internal combustion engine is started or stopped, the torque of the internal combustion engine can be suddenly increased or suddenly reduced to 0, and at the moment, huge torque fluctuation can be transmitted to a gear ring of the planetary mechanism through the planet carrier and further transmitted to the output shaft, so that the shaking of the whole vehicle is caused, and the comfort of the whole vehicle is influenced.
4. When the internal combustion engine is charged at idle speed, the internal combustion engine generates torque in the advancing direction to the gear ring, the whole vehicle is required to be braked, and otherwise, the vehicle slides forwards.
Disclosure of Invention
The invention aims to provide an automobile hybrid power system aiming at the problems in the prior art, and solves the problems that the conventional automobile hybrid power system is poor in fuel economy and insufficient in reverse power under the condition of insufficient electric quantity of a power battery.
The purpose of the invention can be realized by the following technical scheme: the utility model provides an automobile hybrid power system, includes engine, generator, planetary gear train, power transmission shaft and the driving motor who is connected with the power transmission shaft transmission, planetary gear train includes sun gear, ring gear and installs the planet carrier of planet wheel, the output shaft and the ring gear transmission of engine are connected, the pivot and the sun gear transmission of generator are connected, this hybrid power system still includes sun gear clutch, planet carrier clutch and can carry out the stopper of braking to the planet carrier, the planet carrier clutch is used for making to realize transmission connection or disconnect-connection between planet carrier and the power transmission shaft, the sun gear clutch is used for making to realize transmission connection or disconnect-connection between sun gear and the power transmission shaft.
In the automobile hybrid power system, the planet carrier clutch, the sun gear clutch and the brake capable of braking the planet carrier are added, so that the hybrid power system has the speed ratio directly driven by two engines. Under one speed ratio, a brake is connected with a sun gear clutch, the planet carrier clutch is opened, the planet carrier is fixed and does not rotate at the moment, an engine drives a gear ring to rotate, a sun gear rotates passively, a planetary gear system is in ascending transmission, the speed ratio is 1/K, and K is the gear ratio of the gear ring to the sun gear.
In the other speed ratio, the sun gear clutch and the planet carrier clutch are engaged, the brake is opened, and at the moment, the sun gear and the planet carrier in the planetary gear train are simultaneously in transmission connection with the power transmission shaft, so that the sun gear and the planet carrier are combined into a whole and have the same rotating speed. According to the characteristics of the planetary gear train, any two elements in the planetary gear train are combined into a whole, the rotating speeds are the same, the planetary gear train integrally rotates together, the speed ratio of the planetary gear train is 1, and the hybrid power system enables the engine to still keep a high-efficiency working area and the driving motor and the generator to be optionally not driven under the condition that the automobile is at a non-high speed such as a medium speed by increasing the speed ratio, so that the energy loss in the energy conversion process is avoided. Of course, the driving motor and the generator can also select the driving mode according to the actual working condition under the condition of the speed ratio.
Obviously, the power system has the speed ratio directly driven by the two engines, so that the power system can more flexibly adjust the power output of the internal combustion engine and the operation of the driving motor and the generator according to the working condition, thereby more effectively utilizing the high-efficiency working condition of the engines under the conditions of high speed and medium speed, improving the utilization efficiency of energy and achieving the purpose of saving more oil.
And, through increasing the planet carrier clutch, sun gear clutch and can carry out the stopper of braking to the planet carrier, when reversing gear, through opening sun gear clutch, planet carrier clutch, with the stopper joint, the engine can drive the generator electricity generation, and reverse gear is provided the moment of torsion by driving motor completely, at this moment, although the output torque of engine and driving motor's output torque are opposite, but because sun gear clutch, planet carrier clutch all open for the power connection between engine and the driving motor is kept apart completely, consequently reverse gear charging's process can not reduce whole car driving torque, the insufficient problem of reverse gear power under the car power battery power shortage condition has been solved.
In foretell automobile hybrid power system, this hybrid power system still includes the separation and reunion transmission shaft, be equipped with one-level speed reduction driving gear on the separation and reunion transmission shaft, be equipped with the one-level speed reduction driven gear who meshes with one-level speed reduction driving gear on the power transmission shaft, the planet carrier passes through the planet carrier clutch and is connected with the separation and reunion transmission shaft, the sun gear passes through the sun gear clutch and is connected with the separation and reunion transmission shaft. Through the arrangement of the clutch transmission shaft and the first-stage reduction driving gear, when any one of the planet carrier clutch and the sun gear clutch is engaged or both the planet carrier clutch and the sun gear clutch are engaged, power transmission between the planetary gear train and the power transmission shaft can be realized. When the planet carrier clutch and the sun gear clutch are both opened, the power connection between the engine and the driving motor can be completely isolated, the shaking or impact of the whole vehicle can not be caused when the engine is started or stopped, and the comfort of the whole vehicle is improved.
In addition, in the reverse gear process, the brake is engaged, the planet carrier clutch and the sun gear clutch are opened, and at the moment, although the reverse rotation of the power transmission shaft forms reverse torque, the torque does not influence the power generation state of the generator, so that the rotating speed requirement of the generator is reduced, the hybrid power system can realize charging under higher reverse gear speed, and the overall performance of the automobile is improved.
In the above-described hybrid system for an automobile, the diameter of the primary reduction driving gear is smaller than the diameter of the primary reduction driven gear. The diameter of the first-level speed reduction driving gear is smaller than that of the first-level speed reduction driven gear, so that speed reduction and torque increase are realized in the power transmission process, and the power performance of the automobile is favorably improved.
In foretell automobile hybrid power system, last motor reduction driven gear and the second grade reduction driving gear associative with differential mechanism of still being equipped with of power transmission shaft, the diameter of second grade reduction driving gear is less than the diameter of one-level reduction driven gear and motor reduction driven gear, this hybrid power system still includes the motor reduction driving gear with motor reduction driven gear engaged with, motor reduction driving gear is connected with driving motor's pivot transmission, the diameter of motor reduction driving gear is less than motor reduction driven gear's diameter. By the design, when the power of the engine and the driving motor is transmitted to the differential mechanism, multi-stage speed reduction can be realized, so that the automobile has better acceleration and power performance, and the starting requirement of the automobile can be met even if the torque specification of the selected driving motor is smaller, and the requirement on the driving motor is further reduced.
In the above-mentioned hybrid power system for an automobile, the first-stage reduction driven gear, the second-stage reduction driving gear, and the motor reduction driven gear are sequentially arranged along the axial direction of the power transmission shaft. The one-level speed reduction driven gear, the second-level speed reduction driving gear and the motor speed reduction driven gear coaxial structure can reduce the size of the transmission, so that the hybrid power system is compact in structure and easy to reasonably arrange the structure of the whole vehicle.
In the above hybrid system of the vehicle, the output shaft of the engine is drivingly connected to the ring gear through the torsional damper. The design ensures that the engine can play a role in reducing the torsional vibration of the transmission system under various working conditions such as idle running and normal running, and improves the NVH performance of the vehicle power assembly.
In the hybrid power system of the automobile, the plurality of planet wheels are uniformly arranged around the periphery of the sun wheel. Through setting up a plurality of planet wheel and arranging in the periphery of sun gear, can effectively avoid the transmission unbalance loading like this, improve power transmission's stability.
In the above hybrid power system of the vehicle, the clutch transmission shaft is rotatably connected to the vehicle body through a bearing. The design enables the clutch transmission shaft to stably rotate, so that the working reliability of the sun gear clutch and the planet carrier clutch is improved.
Compared with the prior art, the automobile hybrid power system has the following advantages:
1. the power system has the speed ratio directly driven by the two engines, so that the power system can adjust the power output of the internal combustion engine and the running of the driving motor and the generator more flexibly according to the working conditions, the efficient working conditions of the engines can be more effectively utilized under the conditions of high speed and medium speed, the utilization efficiency of energy is improved, and the advantage of good fuel economy is achieved.
2. This automobile hybrid power system is at the reverse gear in-process, through with the stopper joint, opens planet carrier clutch and sun gear clutch, though power transmission shaft antiport formed reverse moment of torsion this moment, but this moment of torsion can not influence the power generation state of generator, has reduced the rotational speed requirement of generator for this hybrid power system can realize charging under the higher speed of a reverse gear car, has promoted the wholeness ability of car. In addition, the power connection between the engine and the driving motor is completely isolated in the state, so that the driving torque of the whole automobile cannot be reduced in the reverse gear charging process, and the automobile has better power performance in reverse gear under the condition that the electric quantity of a power battery is insufficient.
3. When the planet carrier clutch and the sun gear clutch are both opened, the hybrid power system of the automobile can completely isolate the power connection between the engine and the driving motor, and the whole automobile cannot shake or impact when the engine is started or stopped, so that the comfort performance of the whole automobile is improved.
4. This automobile hybrid power system is when the idle speed charges, through all opening planet carrier clutch, sun gear clutch, and the moment of torsion of engine can not transmit for power transmission shaft, has avoided the condition that the car swift current car forward, has promoted the security of car.
5. This automobile hybrid power system has the generator and comes the cooperation work with driving motor for the electric quantity can supply for driving motor work when the generator electricity generation, consequently enables the car and satisfies great continuation of the journey mileage, and is lower to the electric quantity requirement of battery moreover.
Drawings
Fig. 1 is a schematic structural view of the present invention.
FIG. 2 is a power transfer schematic of the present invention in the electric drive mode.
Fig. 3 is a schematic diagram of power transmission when the engine is started according to the present invention.
Fig. 4 is a power transmission schematic diagram of the present invention in engine power split drive.
FIG. 5 is a power transfer schematic when the present invention is operating in the extended range mode.
FIG. 6 is a schematic power transmission diagram of the present invention with the engine in a fixed speed ratio drive.
FIG. 7 is a schematic power transmission diagram of the present invention with the engine in a second, fixed speed ratio.
In the figure, 1, an engine; 2. a generator; 3. a power transmission shaft; 4. a drive motor; 5. a sun gear; 6. a ring gear; 7. a planet carrier; 8. a sun gear clutch; 9. a planet carrier clutch; 10. a brake; 11. a clutch transmission shaft; 12. a primary reduction drive gear; 13. a primary reduction driven gear; 14. the motor reduces the driven gear; 15. a differential mechanism; 16. a secondary reduction drive gear; 17. a motor reduction driving gear; 18. a torsional vibration damper.
Detailed Description
The following is a specific embodiment of the present invention and is further described with reference to the accompanying drawings, but the present invention is not limited to this embodiment.
As shown in fig. 1, the hybrid system of the present vehicle includes an engine 1, a generator 2, a planetary gear train, a clutch transmission shaft 11, a power transmission shaft 3, a sun gear clutch 8, a planet carrier clutch 9, a brake 10, and a drive motor 4. The brake 10 can brake the planet carrier 7, the driving motor 4 is in transmission connection with the power transmission shaft 3, and the clutch transmission shaft 11 is rotatably connected to the vehicle body through a bearing. The planetary gear train comprises a sun gear 5, a gear ring 6 and a planet carrier 7 provided with planet gears, wherein the planet gears are provided with a plurality of planet gears which are uniformly distributed around the periphery of the sun gear 5. An output shaft of the engine 1 is in transmission connection with the gear ring 6 through the torsional damper 18, a rotating shaft of the generator 2 is in transmission connection with the sun gear 5, the planet carrier 7 is connected with the clutch transmission shaft 11 through the planet carrier clutch 9, the sun gear 5 is connected with the clutch transmission shaft 11 through the sun gear clutch 8, the planet carrier clutch 9 is used for enabling the planet carrier 7 and the power transmission shaft 3 to be in transmission connection or disconnection, and the sun gear clutch 8 is used for enabling the sun gear 5 and the power transmission shaft 3 to be in transmission connection or disconnection.
Specifically, a first-stage reduction driving gear 12 is arranged on the clutch transmission shaft 11, a first-stage reduction driven gear 13, a second-stage reduction driving gear 16 and a motor reduction driven gear 14 are sequentially arranged on the power transmission shaft 3 along the axial direction of the power transmission shaft, the first-stage reduction driven gear 13 is meshed with the first-stage reduction driving gear 12, and the second-stage reduction driving gear 16 is connected with a differential mechanism 15. This hybrid power system still includes the motor reduction driving gear 17 with motor reduction driven gear 14 looks meshing, and motor reduction driving gear 17 is connected with driving motor 4's pivot transmission, and the diameter of motor reduction driving gear 17 is less than motor reduction driven gear 14's diameter, and the diameter of one-level reduction driving gear 12 is less than the diameter of one-level reduction driven gear 13, and the diameter of second grade reduction driving gear 16 is less than the diameter of one-level reduction driven gear 13 and motor reduction driven gear 14. Through the design, the hybrid power system has a large reduction ratio, the power of the generator 2 can be improved, and the torque requirements of the generator 2 and the driving motor 4 are reduced. In addition, the hybrid power system forms a multi-shaft structure by adding the clutch transmission shaft 11 and the power transmission shaft 3 which are arranged at intervals, so that the axial distance of the speed reducing mechanism is shorter on the basis of realizing a larger speed reducing ratio, and the whole vehicle arrangement is easy.
The working principle of the hybrid power system of the present vehicle will be described with reference to fig. 2 to 7:
an electric drive mode: as shown in fig. 2, the planet carrier clutch 9 and the sun gear clutch 8 are opened, the driving motor 4 is operated, and the torque of the driving motor 4 is transmitted to the gear of the differential 15 through the motor reduction driving gear 17, the motor reduction driven gear 14, the power transmission shaft 3 and the secondary reduction driving gear 16 in sequence to drive the automobile to run. In this way, the change of the forward and reverse gears of the automobile is realized by changing the rotation direction of the driving motor 4.
Starting the engine 1: as shown in fig. 3, the brake 10 is engaged to fix the carrier 7 against rotation, the carrier clutch 9 and the sun gear clutch 8 are disengaged, and the generator 2 rotates the ring gear 6 via the sun gear 5, thereby starting the engine 1.
The engine 1 is driven by power split: as shown in fig. 4, the planet carrier clutch 9 is engaged, the brake 10 and the sun gear clutch 8 are opened, the engine 1, the generator 2 and the planetary gear train form a split system, and the engine 1 proportionally distributes torque to the generator 2 and the first-stage reduction driving gear 12, so that the power generated by the engine 1 during the running of the motorcar is partially used for generating power by the generator 2.
The torque relationship in split mode is as follows:
M2＝-M1/K＝M7/(K-1)
K＝Z6/Z1
in the formula: z6 is the number of teeth of the ring gear 6; z1 is the number of teeth of sun gear 5; m1 is the torque of the engine 1; m2 is the torque of sun gear 5, equal to the torque of generator 2; m7 is the torque of the carrier 7 and the torque of the clutch transmission shaft 11, and the torque of the clutch transmission shaft 11 is finally transmitted to the differential 15 through the first-stage and second-stage speed reduction mechanisms.
As can be seen from the above formula, by adjusting the torque M2 of the generator 2, the torque M1 of the engine 1 can be adjusted to operate the engine 1 in the optimum economy zone.
In addition, the planetary gear train rotating speed relationship in the split mode is as follows:
n2-Kn1+(K-1)n7＝0
K＝Z6/Z1
in the formula: n2 is the rotational speed of the sun gear 5, equal to the rotational speed of the generator 2; n7 is the rotation speed of the planet carrier 7, which is proportional to the vehicle speed of the whole vehicle; n1 is the rotational speed of the engine 1; z6 is the number of teeth of the ring gear 6; z1 is the number of teeth of sun gear 5.
In the split-flow mode, according to the above formula, at any known vehicle speed, the rotation speed n1 of the engine 1 can be adjusted by controlling the rotation speed n2 of the generator 2, so that the engine 1 can always work in the optimal economic area, and oil saving is realized.
And (3) operating in a range extending mode: as shown in fig. 5, the brake 10 is engaged, the planet carrier clutch 9 and the sun gear clutch 8 are opened, the engine 1 drives the generator 2 to generate electricity, the electric power is supplied to the driving motor 4 to work, the driving motor 4 drives the whole vehicle to perform reverse gear and forward gear low-speed running, and a battery can also be charged. In the reverse gear process, because planet carrier clutch 9 and sun gear clutch 8 are both in the open state, this moment, although power transmission shaft 3 reverse rotation has formed reverse moment of torsion, but this moment of torsion can not influence the power generation state of generator 2, has reduced the rotational speed requirement of generator 2 for this hybrid power system can realize charging under the higher speed of a reverse gear car, has promoted the wholeness ability of car. In addition, the power connection between the engine 1 and the driving motor 4 is completely isolated in the state, so that the driving torque of the whole vehicle cannot be reduced in the reverse gear charging process, and the vehicle has better power performance in reverse gear under the condition that the electric quantity of a power battery is insufficient.
The engine 1 drives a fixed speed ratio one: as shown in fig. 6, the planet carrier clutch 9 and the sun gear clutch 8 are both engaged, the brake 10 is opened, the sun gear 5 and the planet carrier 7 in the planetary gear train are simultaneously in transmission connection with the power transmission shaft 3, and the sun gear 5 and the planet carrier 7 are combined into a whole and have the same rotating speed. According to the characteristics of the planetary gear train, any two elements in the planetary gear train are combined into a whole, the rotating speeds are the same, the planetary gear train rotates integrally, and the speed ratio of the planetary gear train is 1. By increasing the speed ratio, the hybrid power system enables the engine 1 to still maintain a high-efficiency working area and the driving motor 4 and the generator 2 to be optionally not driven under the condition that the automobile is at a non-high speed such as a medium speed, so that energy loss in the energy conversion process is avoided. Of course, the driving mode of the driving motor 4 and the generator 2 can be selected according to the actual working condition under the condition of the speed ratio.
The engine 1 drives a second fixed speed ratio: as shown in fig. 7, the brake 10 is engaged with the sun gear clutch 8, the carrier clutch 9 is opened, the carrier 7 is fixed and does not rotate, the engine 1 drives the ring gear 6 to rotate, the sun gear 5 rotates passively, the planetary gear system is in up-speed transmission, the speed ratio is 1/K, and K is the gear ratio of the ring gear 6 to the sun gear 5, the speed ratio is suitable for a high-speed driving state, and the engine 1 can keep high-efficiency operation and achieve better fuel economy.
The power system has the speed ratio directly driven by the two engines 1, so that the power system can adjust the power output of the internal combustion engine and the operation of the driving motor 4 and the generator 2 more flexibly according to the working conditions, the high-efficiency working conditions of the engines 1 can be more effectively utilized under the conditions of high speed and medium speed, the utilization efficiency of energy is improved, and the purpose of saving more oil is achieved.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
The sun gear clutch 8 and the planet carrier clutch 9 herein may be not only a multi-plate wet clutch but also a synchronizer and other types of clutches capable of separating/transmitting power;
the brake 10 herein may be not only a multi-plate wet brake but also a band brake, a synchronizer engaged with a housing, and other types of brakes that can separate/brake power.
Although 1, engine is used more herein; 2. a generator; 3. a power transmission shaft; 4. a drive motor; 5. a sun gear; 6. a ring gear; 7. a planet carrier; 8. a sun gear clutch; 9. a planet carrier clutch; 10. a brake; 11. a clutch transmission shaft; 12. a primary reduction drive gear; 13. a primary reduction driven gear; 14. the motor reduces the driven gear; 15. a differential mechanism; 16. a secondary reduction drive gear; 17. a motor reduction driving gear; 18. torsional vibration dampers and the like, but does not exclude the possibility of using other terms. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.
Claims (8)
1. The utility model provides an automobile hybrid power system, includes engine (1), generator (2), planetary gear train, power transmission shaft (3) and driving motor (4) be connected with power transmission shaft (3) transmission, planetary gear train includes sun gear (5), ring gear (6) and installs planet carrier (7) of planet wheel, the output shaft and the ring gear (6) transmission of engine (1) are connected, the pivot and sun gear (5) transmission of generator (2) are connected, its characterized in that, this hybrid power system still includes sun gear clutch (8), planet carrier clutch (9) and can carry out stopper (10) that brakies to planet carrier (7), planet carrier clutch (9) are used for making and realize transmission connection or disconnect-connection between planet carrier (7) and power transmission shaft (3), sun gear clutch (8) are used for making and realize transmission connection or disconnect-connection between sun gear (5) and power transmission shaft (3) .
2. The automobile hybrid power system according to claim 1, further comprising a clutch transmission shaft (11), wherein a first-stage reduction driving gear (12) is disposed on the clutch transmission shaft (11), a first-stage reduction driven gear (13) engaged with the first-stage reduction driving gear (12) is disposed on the power transmission shaft (3), the planet carrier (7) is connected with the clutch transmission shaft (11) through a planet carrier clutch (9), and the sun gear (5) is connected with the clutch transmission shaft (11) through a sun gear clutch (8).
3. The vehicle hybrid system according to claim 2, characterized in that the diameter of the primary reduction driving gear (12) is smaller than the diameter of the primary reduction driven gear (13).
4. The automobile hybrid system according to claim 3, characterized in that the power transmission shaft (3) is further provided with a motor reduction driven gear (14) and a secondary reduction driving gear (16) connected with the differential (15), the diameter of the secondary reduction driving gear (16) is smaller than the diameters of the primary reduction driven gear (13) and the motor reduction driven gear (14), the hybrid system further comprises a motor reduction driving gear (17) engaged with the motor reduction driven gear (14), the motor reduction driving gear (17) is in transmission connection with a rotating shaft of the driving motor (4), and the diameter of the motor reduction driving gear (17) is smaller than the diameter of the motor reduction driven gear (14).
5. The vehicle hybrid system according to claim 4, characterized in that the primary reduction driven gear (13), the secondary reduction driving gear (16), and the motor reduction driven gear (14) are arranged in sequence in the axial direction of the power transmission shaft (3).
6. The vehicle hybrid system according to any one of claims 1 to 5, characterized in that the output shaft of the engine (1) is in driving connection with the ring gear (6) via a torsional vibration damper (18).
7. The hybrid system according to any one of claims 1 to 5, characterised in that said planetary wheels are provided in several numbers and are arranged uniformly around the periphery of said sun wheel (5).
8. The hybrid vehicle system according to claim 2, wherein the clutch drive shaft (11) is rotatably connected to the vehicle body by means of a bearing.
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| CN202110049013.8A CN112659884A (en) | 2021-01-14 | 2021-01-14 | Automobile hybrid power system |
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| CN202110049013.8A CN112659884A (en) | 2021-01-14 | 2021-01-14 | Automobile hybrid power system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113232501A (en) * | 2021-05-12 | 2021-08-10 | 东风汽车集团股份有限公司 | Hybrid power driving system |
| CN115126832A (en) * | 2022-07-07 | 2022-09-30 | 重庆理工大学 | Dual-motor planetary gear hybrid power transmission |
| CN115214341A (en) * | 2021-07-06 | 2022-10-21 | 广州汽车集团股份有限公司 | A hybrid electromechanical coupling system |
| CN115891615A (en) * | 2021-09-30 | 2023-04-04 | 比亚迪股份有限公司 | Hybrid system and vehicle having same |
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| CN115214341A (en) * | 2021-07-06 | 2022-10-21 | 广州汽车集团股份有限公司 | A hybrid electromechanical coupling system |
| CN115891615A (en) * | 2021-09-30 | 2023-04-04 | 比亚迪股份有限公司 | Hybrid system and vehicle having same |
| CN115126832A (en) * | 2022-07-07 | 2022-09-30 | 重庆理工大学 | Dual-motor planetary gear hybrid power transmission |
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