CN112829575A - Hybrid electric drive system with double motors and double star gear mechanisms - Google Patents
Hybrid electric drive system with double motors and double star gear mechanisms Download PDFInfo
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- CN112829575A CN112829575A CN202110158047.0A CN202110158047A CN112829575A CN 112829575 A CN112829575 A CN 112829575A CN 202110158047 A CN202110158047 A CN 202110158047A CN 112829575 A CN112829575 A CN 112829575A
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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
- B60K6/22—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
- B60K6/38—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 driveline clutches
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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
- B60K6/42—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 the architecture of the hybrid electric vehicle
- B60K6/44—Series-parallel type
- B60K6/442—Series-parallel switching type
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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
- B60K6/38—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 driveline clutches
- B60K2006/381—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 driveline clutches characterized by driveline brakes
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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
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
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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
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/92—Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Hybrid Electric Vehicles (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Structure Of Transmissions (AREA)
- Arrangement Of Transmissions (AREA)
Abstract
The invention provides a double-motor double-star gear mechanism hybrid electric drive system, which comprises an engine mechanism, a first motor mechanism, a second motor mechanism, a clutch mechanism and a main speed reducing mechanism, wherein the engine mechanism comprises an engine, a first transmission shaft and a first transmission gear train; the first motor mechanism comprises a generator and a second transmission gear train; the second motor mechanism comprises a driving and power generating integrated machine and a first planetary gear transmission mechanism; the clutch mechanism comprises a second transmission shaft, a fourth transmission shaft, a second planetary gear transmission mechanism, a third transmission shaft, a first clutch, a second clutch, a third clutch and a brake; the main speed reducing mechanism comprises a main speed reducer. According to the invention, through coupling and decoupling of different combinations of 2 planetary gear mechanisms, 1 brake and 3 clutches, the direct-drive forward gear, pure Electric Vehicle (EV) driving, series mode, parallel mode and braking energy recovery mode of 4 engines are realized, the selection of the control strategy of the whole vehicle is enriched, the oil consumption of the vehicle is reduced, and the economy of the vehicle is improved.
Description
Technical Field
The invention relates to the technical field of vehicle driving, in particular to a hybrid electric driving system with a double-motor double-star gear mechanism.
Background
In the driving system in the prior art, an engine device of a hydraulic system is required as shown in fig. 1, a first clutch C and a second clutch D are accurately controlled to be opened and closed and the shifting fork position of a synchronizer is accurately controlled, and a torsional vibration damping device B is arranged between the engine device A and the first clutch C to realize the connection and disconnection of power and gear switching; two main coupling and disconnecting devices, such as a dry/wet clutch, are needed to be matched to realize power on-off, so that the realization cost is higher, the occupied space is large, and the light weight and the miniaturization of the system are not facilitated.
Disclosure of Invention
The embodiment of the invention provides a hybrid electric drive system with a double-motor double-star gear mechanism, and aims to solve the technical problems that two main coupling or disconnecting devices are needed to be matched to realize power on-off, the cost is high, the occupied space is large, and the system is not beneficial to light weight and miniaturization.
The invention provides a double-motor double-star gear mechanism hybrid electric drive system which comprises an engine mechanism, a first motor mechanism, a second motor mechanism, a clutch mechanism and a main speed reducing mechanism, wherein the engine mechanism comprises an engine, a first transmission shaft connected with an output shaft of the engine, and a first transmission gear train connected with the first transmission shaft; the first motor mechanism comprises a generator and a second transmission gear train connected with an output shaft of the generator, and the second transmission gear train is connected with the first transmission shaft; the second motor mechanism comprises a driving and power generating integrated machine and a first planetary gear transmission mechanism connected with an output shaft of the driving and power generating integrated machine; the clutch mechanism comprises a second transmission shaft and a fourth transmission shaft which are connected with the first transmission gear train, a second planetary gear transmission mechanism which is connected with the second transmission shaft and the first planetary gear transmission mechanism, a third transmission shaft which is connected with the first planetary gear transmission mechanism, a first clutch which is connected with the first transmission gear train and the fourth transmission shaft, a second clutch which is connected with the second transmission gear train and the second transmission shaft, a third clutch which is connected with the fourth transmission shaft and the second planetary gear transmission mechanism, and a brake which is connected with the second planetary gear transmission mechanism; the main speed reducing mechanism comprises a main speed reducer, a third transmission gear train connected with the main speed reducer and the third transmission shaft, and a driving half shaft arranged on the main speed reducer.
In some embodiments, the first planetary gear set includes a first sun gear connected to the output shaft of the integrated drive-generator, a first planet gear meshed with the first sun gear, a first ring gear meshed with the first planet gear, and a first carrier connecting the first planet gear and the third transmission shaft, the first carrier is connected to the second planetary gear set, and the first ring gear is fixedly disposed.
In some embodiments, the second planetary gear transmission comprises a second sun gear connected to the second transmission shaft, a second planet gear engaged with the second sun gear, a second ring gear engaged with the second planet gear, and a second planet carrier connected to the second planet gear, the second planet carrier is connected to the first planet carrier, the second ring gear is connected to the fourth transmission shaft through the third clutch, and the second ring gear is connected to the brake.
In some embodiments, the first transmission gear train includes a first transmission gear connected to the first transmission shaft, and a second transmission gear meshed with the first transmission gear, the second transmission gear is connected to and engaged with the second transmission shaft through the first clutch, and the second transmission gear is connected to and engaged with the fourth transmission shaft through the third clutch.
In some embodiments, the second transmission gear train comprises a third transmission gear connected with the first transmission shaft, and a fourth transmission gear and a fifth transmission gear meshed with the third transmission gear, the fourth transmission gear is connected with the output shaft of the generator, and the fifth transmission gear is connected and matched with the second transmission shaft through the second clutch.
In some embodiments, the third transmission gear train includes a sixth transmission gear connected to the third transmission shaft, and a seventh transmission gear meshed with the sixth transmission gear, the seventh transmission gear being connected to the final drive;
the engine mechanism comprises a torsional vibration damper, a power input end of the torsional vibration damper is connected with an output shaft of the engine, and a power output end of the torsional vibration damper is connected with the first transmission shaft.
In some embodiments, when the vehicle is in engine direct-drive first gear, the generator and the integrated drive-generator are in a stop state, the second clutch and the brake are in an engaged state, and the first clutch and the third clutch are in a released state.
In some embodiments, when the vehicle is in engine direct-drive third gear, the generator and the integrated drive-generator are in a stop state, the second clutch and the third clutch are in an engaged state, and the first clutch and the brake are in a released state.
In some embodiments, when the vehicle is in the hybrid series mode, the engine, the generator, and the integrated drive-generator are in an engaged state, and the first clutch, the second clutch, the third clutch, and the brake are in a disengaged state.
In some embodiments, when the vehicle is in the parallel mode, the engine and the integrated drive-generator are in an operating state and realize power coupling, the generator is in a stop state, the first clutch is in an engaged state, and the second clutch, the third clutch or the brake is in a disconnected state.
The technical scheme provided by the invention has the beneficial effects that:
according to the multi-mode hybrid power transmission with the function of braking energy recovery, the combination of 2 planetary gear mechanisms, 1 brake and 3 clutches is coupled and disengaged, so that a multi-mode hybrid power transmission with 4 engine direct-drive forward gears, pure Electric Vehicle (EV) driving, a series mode and a parallel mode is realized, the selection of a whole vehicle control strategy is enriched, the vehicle oil consumption is reduced, and the vehicle economy is improved;
in the gear shifting process, the torque is compensated by the driving and power generation integrated machine, the speed is regulated by the generator, the rotating speed difference of the input end and the output end of the clutch or the brake is reduced to a minimum range, the gear shifting impact is reduced, the gear shifting is smooth, and the technical requirements and the cost on elements of the clutch and the brake are reduced;
in the starting process, the speed of the generator is regulated, so that the rotating speed of the engine rises to the high-efficiency area and then the torque is output, and the engine is ensured to start and run in the high-efficiency area so as to reduce the oil consumption.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, 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 the internal structure of a prior art drive system;
FIG. 2 is a schematic structural diagram of a hybrid electric drive system with a dual-motor dual-star gear mechanism according to an embodiment of the present invention;
FIG. 3 is an enlarged view of the circle I in FIG. 2;
fig. 4 is an enlarged schematic view of a portion of circle ii in fig. 2.
In the figure:
110. an engine; 120. a first drive shaft; 131. a first drive gear; 132. a second transmission gear; 200. a torsional vibration damper; 310. a generator; 321. a third transmission gear; 322. a fourth transmission gear; 323. a fifth transmission gear; 410. driving the power generation integrated machine; 421. a first sun gear; 422. a first planet gear; 423. a first ring gear; 510. a second drive shaft; 520. a fourth drive shaft; 531. a second sun gear; 532. a second planet wheel; 533. a second ring gear; 534. a second planet carrier; 540. a third drive shaft; c1, a first clutch; c2, a second clutch; c3, third clutch; b1, a brake; 610. a main reducer; 621. a sixth transmission gear; 622. a seventh transmission gear; 630. the half shaft is driven.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The embodiment of the invention provides a hybrid electric drive system with a double-motor double-star gear mechanism, which can solve the problems that two main coupling or disconnecting devices are needed to be matched to realize power on-off, and the cost is high; and the occupied space is large, which is not beneficial to the technical problems of light weight and miniaturization of the system.
Referring to fig. 2, the present invention provides a hybrid electric drive system with a dual-motor dual-star gear mechanism, which includes an engine mechanism, a first motor mechanism, a second motor mechanism, a clutch mechanism and a main speed reduction mechanism, wherein the engine mechanism includes a first transmission shaft 120 connected between an output shaft of the engine 110 and the engine 110, and a first transmission gear 131 connected to the first transmission shaft 120; the first motor mechanism comprises a generator 310 and a second transmission gear 132 connected with an output shaft of the generator 310, and the second transmission gear 132 is connected with the first transmission shaft 120; the second motor mechanism comprises a driving and power generating integrated machine 410 and a first planetary gear transmission mechanism connected with an output shaft of the driving and power generating integrated machine 410; referring to fig. 2 and 4, the clutch mechanism includes a second transmission shaft 510 and a fourth transmission shaft 520 connected to the first transmission gear 131, a second planetary gear transmission mechanism connecting the second transmission shaft 510 and the first planetary gear transmission mechanism, a third transmission shaft 540 connected to the first planetary gear transmission mechanism, a first clutch C1 connecting the first transmission gear 131 and the fourth transmission shaft 520, a second clutch C2 connecting the second transmission gear 132 and the second transmission shaft 510, a third clutch C3 connecting the fourth transmission shaft 520 and the second planetary gear transmission mechanism, and a brake B1 connected to the second planetary gear transmission mechanism; the final drive mechanism comprises a final drive unit 610, a third transmission gear 321 system connecting the final drive unit 610 and the third transmission shaft 540, and a drive half shaft 630 arranged on the final drive unit 610.
According to the invention, through the coupling and the decoupling of the combination of 2 planetary gear mechanisms, 1 brake B1 and 3 clutches, the four-gear four;
in the gear shifting process, the torque is compensated by the driving and power generation integrated machine 410, the speed is regulated by the generator 310, the rotating speed difference of the input end and the output end of the clutch or brake B1 is reduced to a very small range, the gear shifting impact is reduced, the gear shifting is smooth, and the technical requirements and the cost on the clutch and the brake B1 are reduced;
in the starting process, the speed of the generator 310 is regulated, so that the rotating speed of the engine 110 is increased to the high-efficiency area, and then the torque is output, and the engine 110 is ensured to start and run in the high-efficiency area, so that the oil consumption is reduced.
In an embodiment, referring to fig. 3, the first planetary gear set includes a first sun gear 421 connected to the output shaft of the integrated drive-generator 410, a first planet gear 422 engaged with the first sun gear 421, a first ring gear 423 engaged with the first planet gear 422, and a first ring gear connecting the first planet gear 422 and the third transmission shaft 540, the first ring gear is connected to the second planetary gear set, and the first ring gear 423 is fixedly disposed.
In an embodiment, referring to fig. 2 and 3, the second planetary gear transmission mechanism includes a second sun gear 531 connected to the second transmission shaft 510, a second planet gear 532 engaged with the second sun gear 531, a second ring gear 533 engaged with the second planet gear 532, and a second planet carrier 534 connected to the second planet gear 532, the second planet carrier 534 is connected to the first ring gear, the second ring gear 533 is connected to the fourth transmission shaft 520 through the third clutch C3, and the second ring gear 533 is connected to the brake B1.
In an embodiment, the first planetary gear mechanism and the second planetary gear mechanism share a common carrier, that is, the first gear ring and the second carrier 534 are arranged in the same device, so that the utilization rate of the structural space is improved, the structural space is more compact, and the light weight and the miniaturization of the system are facilitated.
In an embodiment, the first transmission gear 131 includes a first transmission gear 131 connected to the first transmission shaft 120, and a second transmission gear 132 engaged with the first transmission gear 131, the second transmission gear 132 is connected to and engaged with the second transmission shaft 510 through the first clutch C1, and the second transmission gear 132 is connected to and engaged with the fourth transmission shaft 520 through the third clutch C3.
In some embodiments, the second transmission gear 132 includes a third transmission gear 321 connected to the first transmission shaft 120, and a fourth transmission gear 322 and a fifth transmission gear 323 engaged with the third transmission gear 321, the fourth transmission gear 322 is connected to the output shaft of the generator 310, and the fifth transmission gear 323 is connected to the second transmission shaft 510 through the second clutch C2.
In some embodiments, the third transmission gear 321 includes a sixth transmission gear 621 connected to the third transmission shaft 540, and a seventh transmission gear 622 engaged with the sixth transmission gear 621, wherein the seventh transmission gear 622 is connected to the final drive 610;
in one embodiment, the output shaft of the driving motor and the output shaft sleeve shaft of the gearbox are arranged, so that the utilization rate of the structural space is further improved, and the structural space of the system is more compact.
The engine mechanism comprises a torsional vibration damper 200, wherein the power input end of the torsional vibration damper 200 is connected with the output shaft of the engine 110, the power output end of the torsional vibration damper 200 is connected with the first transmission shaft 120, and the torsional rigidity of the joint part of a crankshaft and a transmission system of the engine 110 is reduced, so that the torsional vibration natural frequency of the transmission system is reduced; the torsional damping of the transmission system is increased, the corresponding amplitude of torsional resonance is inhibited, and transient torsional vibration generated by impact is attenuated; controlling torsional vibration of a clutch and a transmission shafting when the power transmission assembly idles, and eliminating idle noise of the transmission, the torsional vibration and the noise of the main reducer 610 and the transmission; the torsional impact load of the transmission system under the unstable working condition is alleviated, and the engagement smoothness of the clutch is improved.
The invention provides a double-motor double-star gear mechanism hybrid electric drive system which realizes the realization forms of different gears and the realization forms of different speed ratios by coupling and disconnecting different combinations of 1 engine 110, 2 motors, 2 planetary gear mechanisms, 3 clutches and 1 brake B1.
When the vehicle is in the parking power generation mode, the engine 110 drives the generator 310 to generate power, and the power is stored in the battery. The power transmission path is: the third transmission gear 321 drives the fourth transmission gear 322 to operate, and further drives the generator 310 to generate electricity, wherein the speed ratio is the rotation speed of the engine 110/the rotation speed of the generator 310: Z1/Z2, wherein Z1 is the fourth transmission gear 322, and Z2 is the third transmission gear 321;
when the vehicle is in the EV running mode, the integrated drive-generator 410 drives the vehicle to run, and the engine 110 and the generator 310 are in a stopped state. The first ring gear 423 is fixed, and the power transmission path is: the integrated drive-generator 410-the first sun gear 421-the first planet gear 422-the first & second planet carrier 534-the sixth transmission gear 621-the seventh transmission gear 622; the speed ratio is: (Z15-Z13)/Z1, wherein Z1 is the rotating speed of the fourth transmission gear 322, Z13 is the rotating speed of the seventh transmission gear 622, and Z15 is the rotating speed of the driving half shaft 630.
When the vehicle is in the first gear driven by the engine 110, the generator 310 and the integrated drive-generator 410 are in a stop state, the second clutch C2 and the brake B1 are in an engaged state, and the first clutch C1 and the third clutch C3 are in a released state. The second clutch C2, the brake B1 are engaged, the first ring gear 423 is fixed, and the power transmission path is: the engine 110, the torsional vibration damper 200, the third transmission gear 321, the fifth transmission gear 323, the second clutch C2, the second sun gear 531, the first and second planet carriers 534, the sixth transmission gear 621, the seventh transmission gear 622, the drive half shaft 630; engine 110 speed/final drive 610 speed: z4 × Z13 ((Z6-Z8)/(Z2 × Z6 × Z12)), where Z2, Z4, Z6, Z8, Z12, and Z13 respectively indicate the rotation speeds of the third transmission gear 321, the fifth transmission gear 323, the second sun gear 531, the second ring gear 533, the sixth transmission gear 621, and the seventh transmission gear 622.
When the vehicle is in the second gear driven by the engine 110, the generator 310 and the integrated drive-generator 410 are in a stop state, the first clutch C1 and the brake B1 are in an engaged state, and the second clutch C2 and the third clutch C3 are in a released state. The second clutch C2, the brake B1 are engaged, the first ring gear 423 is fixed, and the power transmission path is: the engine 110, the torsional vibration damper 200, the first transmission gear 131, the second transmission gear 132, the second clutch C2, the second sun gear 531, the first and second planet carriers 534, the sixth transmission gear 621, the seventh transmission gear 622, the drive half shaft 630; engine 110 speed/final drive 610 speed: z5 × Z13 ((Z6-Z8)/(Z3 × Z8) × Z12), wherein Z3, Z5, Z6, Z8, Z12, and Z13 are rotational speeds of the first transmission gear 131, the second transmission gear 132, the second sun gear 531, the second ring gear 533, the sixth transmission gear 621, and the seventh transmission gear 622, respectively.
When the vehicle is in the third gear driven by the engine 110, the generator 310 and the integrated drive-generator 410 are in a stop state, the second clutch C2 and the third clutch C3 are in an engaged state, and the first clutch C1 and the brake B1 are in a released state. The second clutch C2 and the third clutch C3 are engaged, and the second sun gear 531 is fixedly connected to the first & second carrier 534, so that the speed ratio of the second planetary gear mechanism is 1, and the second sun gear 531, the first & second carrier 534, and the second ring gear 533 all synchronously operate at a constant speed, and the power transmission path is: the engine 110, the torsional vibration damper 200, the third transmission gear 321, the fifth transmission gear 323, the second clutch C2, the second sun gear 531, the first and second planet carriers 534, the sixth transmission gear 621, the seventh transmission gear 622 and the drive half shaft 630; engine 110 speed/final drive 610 speed: (Z4 × Z13)/(Z2 × Z12), wherein Z2, Z4, Z12, and Z13 are rotational speeds of the third transmission gear 321, the fifth transmission gear 323, the sixth transmission gear 621, and the seventh transmission gear 622, respectively.
When the vehicle is in the fourth gear driven by the engine 110, the generator 310 and the integrated drive-generator 410 are in a stop state, the first clutch C1 and the third clutch C3 are in an engaged state, and the second clutch C2 and the brake B1 are in a released state. The first clutch C1 and the third clutch C3 are engaged, and the second sun gear 531 is fixedly connected to the first & second carrier 534, so that the speed ratio of the second planetary gear mechanism is 1, and the second sun gear 531, the first & second carrier 534, and the second ring gear 533 all synchronously operate at a constant speed, and the power transmission path is: the engine 110, the torsional vibration damper 200, the first transmission gear 131, the second transmission gear 132, the first clutch C1, the second sun gear 531, the first and second planet carriers 534, the sixth transmission gear 621, the seventh transmission gear 622, the drive half shaft 630; engine 110 speed/final drive 610 speed: (Z5 × Z13)/(Z3 × Z12), wherein Z3, Z5, Z12, and Z13 are rotational speeds of the first transmission gear 131, the second transmission gear 132, the sixth transmission gear 621, and the seventh transmission gear 622, respectively.
When the vehicle is in the driving power generation mode, the engine 110 is started to drive the generator 310 to generate power.
When the vehicle is in the hybrid series mode, the engine 110, the generator 310, and the integrated drive-generator 410 are in an engaged state, and the first clutch C1, the second clutch C2, the third clutch C3, and the brake B1 are all in a disengaged state.
When the vehicle is in the parallel mode, the engine 110 and the integrated drive-generator 410 are in an operating state and realize power coupling, the generator 310 is in a stop state, the first clutch C1 is in an engaged state, and the second clutch C2, the third clutch C3 or the brake B1 is in a disconnected state.
When the vehicle is in reverse gear R, the integrated drive-generator 410 rotates reversely, the first ring gear 423 is fixed, and the power transmission path is: the integrated drive-generator 410, the first sun gear 421, the first planet gear 422, the first and second planet carriers 534, the sixth transmission gear 621, the seventh transmission gear 622, the drive half shaft 630; the speed ratio is: (Z15-Z13)/Z1, wherein Z1, Z13 and Z15 are the rotating speeds of the fourth transmission gear 322, the seventh transmission gear 622 and the driving half shaft 630 respectively.
When the vehicle is in a braking energy recovery mode and decelerates through braking, the vehicle and the main speed reducer 610 drive the power generation integrated machine 410 to generate power and recover the electric energy into the battery. The integrated drive-generator 410 is operated to generate electricity by the wheel speed and the final drive 610, and the electricity is recovered to the vehicle battery. The first clutch C1, the second clutch C2, the third clutch C3 and the brake B1 are not engaged, and the rotation speed of the integrated drive-generator 410/the rotation speed of the main reduction gear: the speed ratio is still (Z15-Z13)/Z1. Wherein Z1, Z13 and Z15 are the rotation speeds of the fourth transmission gear 322, the seventh transmission gear 622 and the driving half shaft 630 respectively.
In the description of the present invention, 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 merely for convenience in describing the present invention 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 invention. 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 meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
It is to be noted that, in the present invention, 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 foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. 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 invention. Thus, the present invention 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 hybrid electric drive system of a dual-motor dual-star gear mechanism is characterized by comprising:
the engine mechanism comprises an engine, a first transmission shaft connected with an output shaft of the engine, and a first transmission gear train connected with the first transmission shaft;
the first motor mechanism comprises a generator and a second transmission gear train connected with an output shaft of the generator, and the second transmission gear train is connected with the first transmission shaft;
the second motor mechanism comprises a driving and power generating integrated machine and a first planetary gear transmission mechanism connected with an output shaft of the driving and power generating integrated machine;
a clutch mechanism including a second transmission shaft and a fourth transmission shaft connected to the first transmission gear train, a second planetary gear transmission mechanism connecting the second transmission shaft and the first planetary gear transmission mechanism, a third transmission shaft connected to the first planetary gear transmission mechanism, a first clutch connecting the first transmission gear train and the fourth transmission shaft, a second clutch connecting the second transmission gear train and the second transmission shaft, a third clutch connecting the fourth transmission shaft and the second planetary gear transmission mechanism, and a brake connected to the second planetary gear transmission mechanism; and the number of the first and second groups,
and the main speed reducing mechanism comprises a main speed reducer, a third transmission gear train connected with the main speed reducer and the third transmission shaft, and a driving half shaft arranged on the main speed reducer.
2. The dual-motor dual-planetary-gear-mechanism hybrid electric drive system according to claim 1, wherein the first planetary gear mechanism comprises a first sun gear connected to the output shaft of the integrated drive-generator, a first planet gear engaged with the first sun gear, a first ring gear engaged with the first planet gear, and a first carrier connecting the first planet gear and the third transmission shaft, the first carrier being connected to the second planetary gear mechanism, and the first ring gear being fixedly disposed.
3. The dual-motor dual-planetary gear mechanism hybrid electric drive system of claim 2, wherein the second planetary gear mechanism comprises a second sun gear connected to the second transmission shaft, a second planet gear engaged with the second sun gear, a second ring gear engaged with the second planet gear, and a second planet carrier connected to the second planet gear, the second planet carrier is connected to the first planet carrier, the second ring gear is connected to the fourth transmission shaft through the third clutch, and the second ring gear is connected to the brake.
4. The dual motor dual star gear mechanism hybrid electric drive system of claim 1 wherein said first drive gear train comprises a first drive gear coupled to said first drive shaft and a second drive gear in meshing engagement with said first drive gear, said second drive gear being in coupling engagement with said second drive shaft through said first clutch, said second drive gear being in coupling engagement with said fourth drive shaft through said third clutch.
5. The dual-motor dual-star gear mechanism hybrid electric drive system of claim 1, wherein the second transmission gear train comprises a third transmission gear connected with the first transmission shaft, and a fourth transmission gear and a fifth transmission gear meshed with the third transmission gear, the fourth transmission gear is connected with the output shaft of the generator, and the fifth transmission gear is connected and matched with the second transmission shaft through the second clutch.
6. The dual-motor dual-star gear mechanism hybrid electric drive system of claim 1, wherein the third transmission gear train comprises a sixth transmission gear connected with the third transmission shaft, and a seventh transmission gear meshed with the sixth transmission gear, the seventh transmission gear being connected with the final drive;
the engine mechanism comprises a torsional vibration damper, a power input end of the torsional vibration damper is connected with an output shaft of the engine, and a power output end of the torsional vibration damper is connected with the first transmission shaft.
7. The dual-motor dual-star gear mechanism hybrid electric drive system of claim 1, wherein when the vehicle is in engine direct drive first gear, the generator and the drive-generator all-in-one machine are in a stopped state, the second clutch and the brake are in an engaged state, and the first clutch and the third clutch are in a released state.
8. The dual-motor dual-star gear mechanism hybrid electric drive system of claim 1, wherein when the vehicle is in engine direct drive third gear, the generator and the drive and power generation all-in-one machine are in a stop state, the second clutch and the third clutch are in a combined state, and the first clutch and the brake are in a release state.
9. The dual-motor dual-star gear mechanism hybrid electric drive system of claim 1, wherein when the vehicle is in a hybrid series mode, the engine, the generator, and the drive-generator all-in-one are in an engaged state, and the first clutch, the second clutch, the third clutch, and the brake are all in a disengaged state.
10. The dual-motor dual-star gear mechanism hybrid electric drive system of claim 1, wherein when the vehicle is in parallel mode, the engine, the drive-generator all-in-one machine are in operation and power coupling is achieved, the generator is in a stopped state, the first clutch is in an engaged state, and the second clutch, the third clutch or the brake is in a disconnected state.
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