CN112477582B - Four-gear hybrid power transmission system of planetary gear mechanism and vehicle - Google Patents
Four-gear hybrid power transmission system of planetary gear mechanism and vehicle Download PDFInfo
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- CN112477582B CN112477582B CN202011409796.8A CN202011409796A CN112477582B CN 112477582 B CN112477582 B CN 112477582B CN 202011409796 A CN202011409796 A CN 202011409796A CN 112477582 B CN112477582 B CN 112477582B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/36—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings
- B60K6/365—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings with the gears having orbital motion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
- B60K6/54—Transmission for changing ratio
- B60K6/547—Transmission for changing ratio the transmission being a stepped gearing
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Hybrid Electric Vehicles (AREA)
- Structure Of Transmissions (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention provides a four-gear hybrid power transmission system of a planetary gear mechanism and a vehicle. According to the invention, by arranging the two planetary gear trains, the two hollow second transmission shafts and the third transmission shafts, the three clutches and the brake, four gears driven by the engine directly are driven, meanwhile, the speed can be regulated by using the first motor when the vehicle starts, and the speed can be regulated by using the first motor and the torque of the second motor is compensated when the vehicle shifts, so that the structure of the whole transmission system is simpler and more compact, the smoothness of vehicle starting is improved, the shifting impact is effectively reduced, and the performance and cost requirements on the clutches and the brake are reduced.
Description
Technical Field
The application relates to the technical field of new energy hybrid electric vehicles, in particular to a four-gear hybrid power transmission system of a planetary gear mechanism and a vehicle.
Background
With the increasing awareness of people on energy conservation and environmental protection in the current society, new energy automobile technology begins to develop rapidly. The hybrid vehicle driving technology is the core stage of the new energy automobile development process. In the prior art, a single planetary gear train and a compound planetary gear train are matched with the actions of three brakes and a clutch, so that the four gears driven by an engine directly are driven to obtain more functions and higher efficiency, and the adopted structure is complex and the cost is higher. In the prior art, two planetary gear trains and one compound planetary gear train are adopted and are matched with the actions of three brakes and one clutch, so that the driving of four gears under the direct driving of an engine is realized, the structure is complex, the transmission path of a transmission system is complex, the transmission efficiency is not high, and the whole transmission system occupies a large space; the shift impact is large; when the vehicle starts, the torque of the engine is unstable, and the vehicle starts unsmoothly.
Disclosure of Invention
The embodiment of the application provides a four-gear hybrid power transmission system of a planetary gear mechanism and a vehicle, and aims to solve the technical problems that in the related technology, the structure load and the transmission efficiency of the four-gear hybrid power transmission system are not high, the occupied space of the whole transmission system is large, the gear shifting impact is large, and the vehicle is unsmooth in starting due to unstable engine torque.
In a first aspect, the invention provides a four-gear hybrid power transmission system of a planetary gear mechanism, which is characterized by comprising an engine mechanism, a first motor mechanism, a second motor mechanism, a differential mechanism and a clutch mechanism, wherein the engine mechanism comprises an engine and a first transmission shaft connected with an output shaft of the engine; the first motor mechanism comprises a first motor and a first planetary gear train connected with an output shaft of the first motor, and the first planetary gear train is in transmission connection with the first transmission shaft; the second motor mechanism comprises a second motor and a first transmission gear train connected with an output shaft of the second motor, and the second motor is a driving motor and generator integrated machine; the differential mechanism comprises a differential and a driving half shaft arranged at one end of the differential, and the first transmission gear train is connected with the other end of the differential; the clutch mechanism comprises a second transmission shaft, a third transmission shaft, a fourth transmission shaft and a fifth transmission shaft which are sequentially arranged, a second transmission gear train connected with the second transmission shaft and the first transmission shaft, a third transmission gear train connected with the third transmission shaft and the first transmission shaft, a first clutch arranged between the second transmission shaft and the fourth transmission shaft, a second clutch arranged between the third transmission shaft and the fourth transmission shaft, a second planetary gear train connected between the fourth transmission shaft and the fifth transmission shaft, a third clutch and a brake arranged on the second planetary gear train, and the first transmission gear train is connected with the fifth transmission shaft.
In some embodiments, the second planetary gear train includes a second ring gear, a second planetary gear, a second planet carrier, and a second sun gear, the second sun gear is fixedly connected to the fourth transmission shaft, the second planet carrier is fixedly connected to the fifth transmission shaft, and a third clutch is connected between the second sun gear and the second planet carrier.
In some embodiments, the clutch hub of the third clutch is connected to the second carrier.
In some embodiments, the first planetary gear train includes a first ring gear for fixed connection to a transmission housing, a first planet carrier for fixed connection to an output shaft of the engine, and a first sun gear fixedly connected to an input shaft of the first electric machine.
In some embodiments, the first transmission gear train includes a fifth gear, a sixth gear, a seventh gear, an eighth gear, and a main reduction gear, the fifth gear and the sixth gear are both fixedly connected to the fifth transmission shaft, the seventh gear is fixed to the transmission housing and supported by a bearing, the eighth gear is fixedly connected to the output shaft of the second electric machine, the main reduction gear is fixedly connected to the differential, the fifth gear and the main reduction gear are engaged, the eighth gear and the seventh gear are engaged, and the seventh gear and the sixth gear are engaged.
In some embodiments, a torsional vibration damper is connected to the output shaft of the engine, and the first carrier, the second drive shaft, and the third drive shaft are each drivingly connected to the torsional vibration damper.
In some embodiments, the first clutch, the second clutch, and the third clutch are dry clutches or wet clutches.
In some embodiments, the first electric machine is a generator.
In some embodiments, the fifth propeller shaft is fixedly coupled to the sixth gear, and the main reduction gear is fixedly coupled to the differential.
In a second aspect, the invention provides a vehicle comprising a planetary gear set four-speed hybrid powertrain as described above, the drive axle shaft being connected to the vehicle power input.
The beneficial effect that technical scheme that this application provided brought includes:
according to the invention, by arranging the two planetary gear trains, the two hollow second transmission shafts and the third transmission shafts, the three clutches and the brake, four gears driven by the engine directly are driven, meanwhile, the speed can be regulated by using the first motor when the vehicle starts, and the speed can be regulated by using the first motor and the torque of the second motor is compensated when the vehicle shifts, so that the structure of the whole transmission system is simpler and more compact, the smoothness of vehicle starting is improved, the shifting impact is effectively reduced, and the performance and cost requirements on the clutches and the brake are reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of a four-speed hybrid powertrain with a planetary gear mechanism according to the present invention.
In the figure:
100. an engine; 200. a torsional vibration damper; 310. a first ring gear; 320. a first planet gear; 330. a first carrier; 340. a first sun gear; 400. a first motor; 410. a first gear; 420. a second gear; 430. a third gear; 440. a fourth gear; 510. a first drive shaft; 520. a second drive shaft; 530. a third drive shaft; 540. a fourth drive shaft; 550. a fifth drive shaft; 610. a first clutch; 620. a second clutch; 630. a third clutch; 640. a brake; 710. a second ring gear; 720. a second planet wheel; 730. a second sun gear; 740. a second planet carrier; 810. a sixth gear; 820. a fifth gear; 830. a seventh gear; 840. an eighth gear; 850. a main reduction gear; 900. a differential mechanism; 910. a drive half shaft; 1000. a second motor.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The embodiment of the application provides a four-gear hybrid power transmission system of a planetary gear mechanism, which can solve the technical problems that the structure load and the transmission efficiency of the four-gear hybrid power transmission system are not high, the occupied space of the whole transmission system is large, the gear shifting impact is large, and the starting of a vehicle is unsmooth due to the instability of the torque of an engine in the starting process.
Referring to fig. 1, the present invention provides a four-gear hybrid power transmission system of a planetary gear mechanism, including an engine mechanism, a first motor mechanism, a second motor mechanism, a differential mechanism and a clutch mechanism, where the engine mechanism includes an engine 100, and a first transmission shaft 510 connected to an output shaft of the engine 100; the first motor mechanism comprises a first motor 400 and a first planetary gear train connected with an output shaft of the first motor 400, and the first planetary gear train is in transmission connection with the first transmission shaft 510; the second motor mechanism comprises a second motor 1000 and a first transmission gear train connected with an output shaft of the second motor 1000, and the second motor 1000 is a driving motor and generator integrated machine; the differential mechanism comprises a differential 900 and a driving half shaft 910 arranged at one end of the differential 900, and the first transmission gear train is connected with the other end of the differential 900; the clutch mechanism comprises a second transmission shaft 520, a third transmission shaft 530, a fourth transmission shaft 540 and a fifth transmission shaft 550 which are arranged in sequence, a second transmission gear train connecting the second transmission shaft 520 and the first transmission shaft 510, a third transmission gear train connecting the third transmission shaft 530 and the first transmission shaft 510, a first clutch 610 arranged between the second transmission shaft 520 and the fourth transmission shaft 540, a second clutch 620 arranged between the third transmission shaft 530 and the fourth transmission shaft 540, a second planetary gear train connecting the fourth transmission shaft 540 and the fifth transmission shaft 550, and a third clutch 630 and a brake 640 arranged on the second planetary gear train 720, wherein the first transmission gear train is connected with the fifth transmission shaft 550.
According to the invention, the two planetary gear trains, the second transmission shaft 520 and the third transmission shaft 530 which are sleeved in an empty way, the three clutches and the brake 640 are adopted, so that four gears driven by the engine 100 directly are driven, meanwhile, the speed can be regulated by using the first motor 400 when the vehicle starts, and the speed can be regulated by using the first motor 400 and the torque of the second motor 1000 is compensated when the vehicle shifts, so that the structure of the whole transmission system is simpler and more compact, the smoothness of vehicle starting is improved through the torsional vibration damper 200, the gear shifting impact is effectively reduced, and the performance and cost requirements on the clutches and the brake 640 are reduced.
In some embodiments, the second planetary gear set includes a second ring gear 710, a second planetary gear 720, a second planet carrier 740, and a second sun gear 730, the second sun gear 730 is fixedly connected to the fourth transmission shaft 540, the second planet carrier 740 is fixedly connected to the fifth transmission shaft 550, and a third clutch 630 is connected between the second sun gear 730 and the second planet carrier 740.
In some embodiments, the clutch hub of the third clutch 630 is connected to the second carrier 740.
In some embodiments, the fifth transmission shaft 550 is fixedly connected to the sixth gear 810, and the main reduction gear 850 is fixedly connected to the differential 900.
In some embodiments, the first planetary gear train includes a first ring gear 310, a first planetary gear 320, a first carrier 330, and a first sun gear 340, the first ring gear 310 is configured to be fixedly connected to a transmission housing, the first carrier 330 is configured to be fixedly connected to an output shaft of the engine 100, and the first sun gear 340 is fixedly connected to an input shaft of the first electric machine 400, so that power transmitted by the engine 100 can be transmitted to the first electric machine 400 through the first planetary gear 320 for generating electricity.
In some embodiments, the first transmission gear train includes a fifth gear 820, a sixth gear 810, a seventh gear 830, an eighth gear 840 and a main reduction gear 850, the fifth gear 820 and the sixth gear 810 are both fixedly connected to the fifth transmission shaft 550, the seventh gear 830 is fixedly connected to a transmission housing and supported by bearings, the eighth gear 840 is fixedly connected to an output shaft of the second motor 1000, the main reduction gear 850 is fixedly connected to the differential 900, the fifth gear 820 and the main reduction gear are engaged, the eighth gear 840 and the seventh gear 830 are engaged, and the seventh gear 830 is engaged with the sixth gear 810.
In some embodiments, a torsional vibration damper 200 is connected to an output shaft of the engine 100, and the first carrier 330, the second transmission shaft 520 and the third transmission shaft 530 are in transmission connection with the torsional vibration damper 200 to reduce the reverse stiffness of a joint portion between a crankshaft of the engine 100 and a transmission system, so as to reduce the natural frequency of torsional vibration of the transmission system, increase the torsional damping of a conventional system, suppress the amplitude corresponding to torsional resonance, and attenuate transient torsional vibration generated by impact; the torsional impact load of the transmission system under the unstable working condition is alleviated, and the combination smoothness of the clutch is improved.
In some embodiments, the first clutch 610, the second clutch 620, and the third clutch 630 are dry clutches or wet clutches.
In some embodiments, the first electric machine 400 is a generator.
The gear number of the first sun gear 340 is Z1, the gear number of the first planet gear 320 is Z2, the gear number of the first gear ring 310 is Z3, the gear number of the second gear 420 is Z4, the gear number of the first gear 410 is Z5, the gear number of the fourth gear 440 is Z6, the gear number of the third gear 430 is Z7, the gear number of the second sun gear 730 is Z8, the gear number of the second planet gear 720 is Z9, the gear number of the second gear ring 710 is Z10, the gear number of the fifth gear 820 is Z11, the gear number of the sixth gear 810 is Z12, the gear number of the seventh gear 830 is Z13, the gear number of the eighth gear 840 is Z14, and the gear number of the second sun gear 730 is Z15.
When the vehicle is in the parking mode, the engine 100 drives the first motor 400 to generate power, and the first motor 400 stores the power into the battery;
when the vehicle is in reverse R mode, the second electric machine 1000 is in reverse rotation, the first clutch 610, the second clutch 620, the third clutch 630 and the brake 640 are not engaged, and the speed ratio is the second electric machine 1000 speed/main reduction gear 850 speed: (Z15/Z11) (Z12/Z14).
When the vehicle is in the EV running mode, the second motor 1000 is an integrated machine of a generator and a driving motor, the vehicle is driven to run by the second motor 1000, and the engine 100 does not participate in driving.
When the vehicle is in the direct drive mode of the engine 100, 4 gears are realized through 1 gear to 4 gears as shown in table 1, and the engine 100 can drive the first motor 400 and the second motor 1000 to generate power.
TABLE 1 Clutch and brake 640 on/off for direct drive mode four-gear of engine 100
| Gear position | Second clutch C1 | Third clutch C2 | First clutch C3 | Brake |
| 1 | 0 | 0 | 1 | 1 |
| 2 | 1 | 0 | 0 | 1 |
| 3 | 0 | 1 | 1 | 0 |
| 4 | 1 | 1 | 0 | 0 |
In the table, the number "1" represents that the clutch or brake 640 is engaged, and the number "0" represents that the clutch or brake 640 is disengaged.
When the vehicle is in engine 100 direct drive first gear mode, the first clutch 610 and brake 640 are engaged, the second ring gear 710 is stationary, and the power transmission path is engine 100-torsional damper 200-first carrier 330-first gear 410-third gear 430-first clutch 610-second sun gear 730-second carrier 740-fifth gear 820-main reduction gear 850-drive half shaft 910. The speed ratio is engine 100 speed/main reduction gear speed: z7 × Z15 (Z8+ Z10)/(Z5 × Z8 × Z11).
When the vehicle is in the engine 100 direct drive second gear mode, the second clutch 620 and the brake 640 are engaged, the second ring gear 710 is stationary, and the power transmission path is: engine 100-torsional damper 200-first carrier 330-second gear 420-fourth gear 440-second clutch 620-second sun gear 730-second carrier 740-fifth gear 820-main reduction gear 850-drive half shaft 910. The speed ratio is engine 100 speed/main reduction gear speed: z6 × Z15 (Z8+ Z10)/(Z4 × Z8 × Z11).
When the vehicle is in the engine 100 direct-drive third-gear mode, the third clutch 630 and the first clutch 610 are combined, the second sun gear 730 and the second planet carrier 740 are fixedly connected, the speed ratio of the second group of planetary gear mechanisms is that the second sun gear 730, the second planet carrier 740 and the second ring gear 710 all synchronously run at a constant speed, and the power transmission path is that: engine 100-torsional vibration damper 200-first carrier 330-first gear 410-third gear 430-first clutch 610-second sun gear 730-second carrier 740-fifth gear 820-main reduction gear 850-drive half shaft 910 with the speed ratio engine 100 rpm/main reduction gear rpm: (Z7 × Z15)/(Z5 × Z11).
When the vehicle is in a direct-drive fourth-gear mode of the engine 100, the second clutch 620 and the third clutch 630 are combined, the second sun gear 730 and the second planet carrier 740 are fixedly connected, the speed ratio of the second group of planetary gear mechanisms is 1, the second sun gear 730, the second planet carrier 740 and the second ring gear 710 all synchronously run at a constant speed, and the power transmission path is as follows: engine 100-torsional damper 200-second carrier 740-second gear 420-fourth gear 440-second clutch 620-second sun gear 730-second carrier 740-fifth gear 820-main reduction gear 850-drive half shaft 910. The speed ratio is engine 100 speed/differential 900 speed: (Z6 × Z15)/(Z4 × Z11).
When the vehicle is in a driving power generation mode, the engine 100 is started during driving to drive the first motor 400 and the second motor 1000 to generate power;
when the vehicle is in the series driving mode, the engine 100 is started during driving to drive the first motor 400 and the second motor 1000 to generate power, the first motor 400 and the second motor 1000 transmit electric energy to the second motor 1000 through the battery to drive the vehicle to drive, and the clutch and the brake 640 are not combined.
When the vehicle is in the parallel mode, the first motor 400 and the second motor 1000 are coupled dynamically during driving, so that the vehicle is driven to run together, and power can be generated at the same time.
When the vehicle is in the braking mode, the wheels and the differential 900 cause the second electric machine 1000 to generate electricity and recover the electricity to the battery when decelerating through braking. The second motor 1000 (driving motor and generator integrated machine) is operated to generate electricity by the wheel speed and the differential 900, and the electricity is recovered to the vehicle battery. The second clutch 620, the third clutch 630, the first clutch 610 and the brake 640 are not combined, and the speed ratio is the rotation speed of the second motor 1000/the rotation speed of the main reduction gear 850: (Z15/Z11) (Z12/Z14).
Based on the same inventive concept, the invention provides a vehicle comprising the planetary gear mechanism four-gear hybrid power transmission system, wherein the driving half shaft 910 is connected with the power input end of the vehicle.
A four-gear hybrid power transmission system of a planetary gear mechanism comprises an engine mechanism, a first motor mechanism, a transmission shaft mechanism, a differential mechanism, a clutch mechanism, a brake 640 mechanism and a second motor mechanism, wherein the engine mechanism comprises an engine 100; the first motor mechanism comprises a first motor 400 which is set as a generator, and the first motor 400 is connected with an output shaft of the engine 100 through a first planetary gear 320; the transmission shaft mechanism comprises a second transmission shaft 520, a third transmission shaft 530 and a third intermediate shaft, wherein one end of each of the second transmission shaft 520 and the third transmission shaft 530 is connected with the output shaft of the engine 100; the differential mechanism comprises a differential 900 and a driving half shaft 910 connected to the differential 900, the output end of the differential 900 is connected with the other end of the third intermediate shaft through a second planetary gear 720, and the driving half shaft 910 is used for being connected with the power input end of the vehicle; the clutch mechanism includes a third clutch 630 disposed between the other end of the second transmission shaft 520 and one end of the third intermediate shaft, a first clutch 610 disposed between the other end of the third transmission shaft 530 and one end of the third intermediate shaft, a second clutch 620 disposed between a second sun gear 730 and a second carrier 740 of the second planetary gear 720; the brake 640 mechanism includes a brake 640 connected to the output shaft of the differential 900; the second motor mechanism comprises a second motor 1000 which is a driving motor and generator integrated machine, and the second motor 1000 is connected with an output shaft of the differential 900.
According to the invention, the two planetary gear trains, the second transmission shaft 520 and the third transmission shaft 530 which are sleeved in an empty way, the three clutches and the brake 640 are adopted, so that four gears driven by the engine 100 directly are driven, meanwhile, the speed can be regulated by using the first motor 400 when the vehicle starts, and the speed can be regulated by using the first motor 400 and the torque of the second motor 1000 is compensated when the vehicle shifts, so that the structure of the whole transmission system is simpler and more compact, the smoothness of vehicle starting is improved through the torsional vibration damper 200, the gear shifting impact is effectively reduced, and the performance and cost requirements on the clutches and the brake 640 are reduced.
In some embodiments, a torsional vibration damper 200 is connected to the output shaft of the engine 100, and the power input end of the first planetary gear 320, one end of the second transmission shaft 520, and one end of the third transmission shaft 530 are connected to the torsional vibration damper 200, so as to reduce the reverse stiffness of the joint between the crankshaft of the engine 100 and the transmission system, thereby reducing the natural frequency of torsional vibration of the transmission system, increasing the torsional damping of the conventional system, suppressing the amplitude corresponding to torsional resonance, and attenuating transient torsional vibration generated by impact; the torsional impact load of the transmission system under the unstable working condition is alleviated, and the combination smoothness of the clutch is improved.
In some embodiments, the first planetary gear 320 includes a first carrier 330 and a first sun gear 340, the first carrier 330 is connected to the output shaft of the engine 100, and the first sun gear 340 is connected to the input shaft of the first electric machine 400.
In some embodiments, the second planetary gear 720 includes a second planetary carrier 740 and a second sun gear 730, the second planetary carrier 740 is connected to the output shaft of the differential 900, the second sun gear 730 is connected to the other end of the third intermediate shaft, and the second planetary carrier 740 and the second sun gear 730 are connected through a second clutch 620.
In some embodiments, a first gear 410 is coupled to the output shaft of the engine 100; one end of the second transmission shaft 520 is connected with a third gear 430, and the third gear 430 is meshed with the first gear 410; one end of the third transmission shaft 530 is connected with a fourth gear 440, and the fourth gear 440 is engaged with the second gear 420.
In some embodiments, a second gear 420 is also coupled to the output shaft of the engine 100; one end of the third transmission shaft 530 is connected with a fourth gear 440, and the fourth gear 440 is engaged with the second gear 420.
In some embodiments, the first gear 410 is fixedly attached to the transmission housing.
In some embodiments, a fifth gear 820 and a sixth gear 810 are connected to the output shaft of the second sun gear 730, and the fifth gear 820 is meshed with a main reduction gear 850 of the differential 900;
a seventh gear 830 is connected to an output shaft of the differential 900;
an eighth gear 840 is connected to an output shaft of the second motor 1000, the eighth gear 840 is engaged with the seventh gear 830, and the seventh gear 830 is engaged with the sixth gear.
In some embodiments, a sixth gear 810 is also coupled to the output shaft of the second sun gear 730;
a seventh gear 830 is connected to an output shaft of the differential 900;
an eighth gear 840 is connected to an output shaft of the second motor 1000, the eighth gear 840 is engaged with the seventh gear 830, and the seventh gear 830 is engaged with the sixth gear.
According to the vehicle provided by the invention, the four-gear hybrid power transmission system of the planetary gear mechanism is adopted as power input, so that the driving of four gears under the direct drive of the engine 100 is realized, meanwhile, the speed can be regulated by utilizing the first motor 400 when the vehicle starts, the speed can be regulated by utilizing the first motor 400 and the torque of the second motor 1000 is compensated when the vehicle shifts, the smoothness of vehicle starting is improved, the shifting impact is effectively reduced, and meanwhile, the requirements on the performance and the cost of the clutch and the brake 640 are reduced.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It is noted that, in the present application, 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 an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. 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 application. Thus, the present application 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 (10)
1. A planetary gear mechanism four-speed hybrid transmission system, comprising:
the engine mechanism comprises an engine and a first transmission shaft connected with an output shaft of the engine;
the first motor mechanism comprises a first motor and a first planetary gear train connected with an output shaft of the first motor, and the first planetary gear train is in transmission connection with the first transmission shaft;
the second motor mechanism comprises a second motor and a first transmission gear train connected with an output shaft of the second motor, and the second motor is a driving motor and generator integrated machine;
the differential mechanism comprises a differential and a driving half shaft arranged at one end of the differential, and the first transmission gear train is connected with the other end of the differential; and the number of the first and second groups,
the clutch mechanism comprises a second transmission shaft, a third transmission shaft, a fourth transmission shaft and a fifth transmission shaft which are sequentially arranged, a second transmission gear train connected with the second transmission shaft and the first transmission shaft, a third transmission gear train connected with the third transmission shaft and the first transmission shaft, a first clutch arranged between the second transmission shaft and the fourth transmission shaft, a second clutch arranged between the third transmission shaft and the fourth transmission shaft, a second planetary gear train connected between the fourth transmission shaft and the fifth transmission shaft, a third clutch and a brake arranged on the second planetary gear train, and the first transmission gear train is connected with the fifth transmission shaft.
2. The planetary gear train fourth-speed hybrid transmission system according to claim 1, wherein the second planetary gear train includes a second ring gear, a second planetary gear, a second planet carrier, and a second sun gear, the second sun gear is fixedly connected to the fourth transmission shaft, the second planet carrier is fixedly connected to the fifth transmission shaft, and a third clutch is connected between the second sun gear and the second planet carrier.
3. A planetary gear mechanism four-speed hybrid transmission system as claimed in claim 2, wherein the clutch hub of the third clutch is connected with the second carrier.
4. A planetary gear mechanism fourth-speed hybrid powertrain according to claim 1, characterised in that the first planetary gear train comprises a first ring gear for fixed connection to a gearbox housing, a first planet carrier for fixed connection to an output shaft of the engine and a first sun gear for fixed connection to an input shaft of the first electrical machine.
5. A planetary gear mechanism fourth-speed hybrid powertrain as claimed in claim 1, wherein the first drive gear train includes a fifth gear, a sixth gear, a seventh gear, an eighth gear and a main reduction gear, the fifth gear and the sixth gear are each fixedly connected to the fifth drive shaft, the seventh gear is fixed to the transmission housing and supported by bearings, the eighth gear is fixedly connected to the output shaft of the second electric machine, the main reduction gear is fixedly connected to the differential, the fifth gear is engaged with the main reduction gear, the eighth gear is engaged with the seventh gear, and the seventh gear is engaged with the sixth gear.
6. A planetary gear mechanism four speed hybrid transmission as claimed in claim 4, wherein a torsional damper is connected to the output shaft of the engine, and the first carrier, the second drive shaft and the third drive shaft are drivingly connected to the torsional damper.
7. A planetary gear mechanism four-speed hybrid transmission system as claimed in claim 1, wherein the first clutch, the second clutch and the third clutch are dry clutches or wet clutches.
8. A planetary gear mechanism four speed hybrid transmission as claimed in claim 1, wherein the first electric machine is a generator.
9. A planetary gear mechanism fourth speed hybrid transmission system as claimed in claim 5, wherein said fifth transfer shaft is fixedly connected to said sixth gear and said main reduction gear is fixedly connected to said differential.
10. A vehicle comprising a four-speed hybrid powertrain with a planetary gear mechanism as claimed in any one of claims 1-9, the drive axle shaft being connected to the vehicle power input.
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| CN113815407B (en) * | 2021-08-20 | 2023-06-27 | 东风汽车集团股份有限公司 | Power transmission system and vehicle |
| CN114228474B (en) * | 2021-12-08 | 2023-06-27 | 东风汽车集团股份有限公司 | Hybrid gearbox, hybrid driving system and vehicle |
| CN114643847B (en) * | 2022-03-29 | 2024-04-09 | 南通大任永磁电机制造有限公司 | Electric vehicle, integrated power device and transmission method thereof |
| CN115230456B (en) * | 2022-09-15 | 2022-12-09 | 绵阳富临精工股份有限公司 | Dual-motor hybrid power system |
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