CN112918238A - Longitudinal double-motor hybrid power system - Google Patents
Longitudinal double-motor hybrid power system Download PDFInfo
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- CN112918238A CN112918238A CN202110184381.3A CN202110184381A CN112918238A CN 112918238 A CN112918238 A CN 112918238A CN 202110184381 A CN202110184381 A CN 202110184381A CN 112918238 A CN112918238 A CN 112918238A
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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
- B60K6/26—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 motors or the generators
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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
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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
- B60K6/40—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 assembly or relative disposition of components
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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
Abstract
A longitudinally-arranged double-motor hybrid power system comprises an engine and a power transmission device, wherein the power transmission device comprises an input shaft, an output shaft and a first motor shaft of a first motor, a first gear driving gear and a second gear driving gear are arranged on the input shaft, one end of the first motor shaft is provided with a first gear driven gear meshed with the first gear driving gear, a second gear driven gear meshed with the second gear driving gear, the other end of the first motor shaft is circumferentially fixed with an output driving gear, an output driven gear meshed with the output driving gear is circumferentially fixed on the output shaft, a synchronizer is arranged between the first gear driving gear and the second gear driving gear or between the first gear driven gear and the second gear driven gear, the engine is connected with the input shaft through a second motor integrated with a clutch, the engine, the second motor and the first motor are positioned in a power transmission route, and a driving disc of the clutch is fixedly, and the rotor of the second motor is fixedly connected with the input shaft and the driven disc of the clutch respectively.
Description
Technical Field
The invention relates to the technical field of power transmission, in particular to a longitudinally-arranged double-motor hybrid power system.
Background
With the consumption of petroleum energy, the environment is more and more damaged by the lack of energy and the high-pollution exhaust emission of automobiles, so the emission standard of automobile exhaust is more and more strict, and the main body of the automobile industry is gradually developing towards a hybrid electric vehicle with low emission, low oil consumption and high performance. In addition, according to the development and planning of new energy automobile industry, the oil consumption of commercial vehicles in 2025 reaches the international leading level, new energy automobiles account for more than 20% of the production and sale of automobiles, the reserved quantity of commercial vehicles in 2017 in China accounts for 12.7% of the total quantity of automobiles, and the energy consumption accounts for 51.1% of the total energy in the traffic field, because the existing commercial vehicles still mainly use pure fuel oil vehicles, the development of longitudinal hybrid power systems has huge market potential.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a longitudinally-arranged double-motor hybrid power system which can realize continuous power during gear shifting, improve the comfort of gear shifting, provide power assistance in the acceleration process, has good driving performance, has a compact structure and small axial layout, and can meet the arrangement requirements of most rear-drive vehicles.
The technical scheme of the invention is as follows: a longitudinally-arranged double-motor hybrid power system comprises an engine and a power transmission device, wherein the power transmission device comprises an input shaft, an output shaft and a first motor shaft of a first motor, the input shaft, the output shaft and the first motor shaft are arranged in parallel, a first gear driving gear and a second gear driving gear are sequentially arranged on the input shaft, one end of the first motor shaft is provided with a first gear driven gear and a second gear driven gear, the first gear driving gear is meshed with the first gear driven gear, the second gear driving gear is meshed with the second gear driven gear, an output driving gear is circumferentially fixed at the other end of the first motor shaft, an output driven gear is circumferentially fixed on the output shaft, and the output driving gear is meshed with the output driven gear; a synchronizer is arranged between the first-gear driving gear and the second-gear driving gear or between the first-gear driven gear and the second-gear driven gear, when the synchronizer is positioned between the first-gear driven gear and the second-gear driven gear, the synchronizer is circumferentially fixed on a first motor shaft, the first-gear driven gear and the second-gear driven gear are respectively in clearance fit on the first motor shaft, the first-gear driving gear and the second-gear driving gear are respectively circumferentially fixed on an input shaft, when the synchronizer is positioned between the first-gear driving gear and the second-gear driving gear, the synchronizer is circumferentially fixed on the input shaft, the first-gear driving gear and the second-gear driving gear are respectively in clearance fit on the input shaft, and the first-gear driven gear and the second-gear driven gear are respectively circumferentially fixed on; the engine is connected with the input shaft through a second motor, the engine, the second motor and the first motor are positioned on one power transmission path, a clutch is integrated in the second motor, a driving disc of the clutch is fixedly connected with a flywheel on a crankshaft of the engine, and a rotor of the second motor is fixedly connected with the input shaft and a driven disc of the clutch respectively.
The clutch is connected with the rotor of the second motor through the driven disc to form an integral structure, and the clutch and the rotor of the second motor are jointly installed in the stator of the second motor.
When the synchronizer is positioned between the first-gear driven gear and the second-gear driven gear, the opposite ends of the first-gear driven gear and the second-gear driven gear are respectively provided with a combination tooth, and a gear ring of the synchronizer is respectively corresponding to the combination teeth of the first-gear driven gear and the second-gear driven gear; when the synchronizer is positioned between the first gear driving gear and the second gear driving gear, the opposite ends of the first gear driving gear and the second gear driving gear are respectively provided with a combination tooth, and the gear ring of the synchronizer is respectively corresponding to the combination teeth of the first gear driving gear and the second gear driving gear.
The power transmission device is provided with a yielding space for installing the first motor, two ends of a first motor shaft of the first motor respectively extend into the power transmission device, and two ends of the first motor shaft are respectively supported on the shell of the power transmission device through bearings.
The clutch is a dry clutch or a wet clutch.
Adopt above-mentioned technical scheme: the power transmission device comprises an engine and a power transmission device, wherein the power transmission device comprises an input shaft, an output shaft and a first motor shaft of a first motor, the input shaft, the output shaft and the first motor shaft are arranged in parallel, a first gear driving gear and a second gear driving gear are sequentially arranged on the input shaft, one end of the first motor shaft is provided with a first gear driven gear and a second gear driven gear, the first gear driving gear is meshed with the first gear driven gear, the second gear driving gear is meshed with the second gear driven gear, an output driving gear is circumferentially fixed at the other end of the first motor shaft, an output driven gear is circumferentially fixed on the output shaft, and the output driving gear is meshed with the output driven gear; a synchronizer is arranged between the first-gear driving gear and the second-gear driving gear or between the first-gear driven gear and the second-gear driven gear, when the synchronizer is positioned between the first-gear driven gear and the second-gear driven gear, the synchronizer is circumferentially fixed on a first motor shaft, the first-gear driven gear and the second-gear driven gear are respectively in clearance fit on the first motor shaft, the first-gear driving gear and the second-gear driving gear are respectively circumferentially fixed on an input shaft, when the synchronizer is positioned between the first-gear driving gear and the second-gear driving gear, the synchronizer is circumferentially fixed on the input shaft, the first-gear driving gear and the second-gear driving gear are respectively in clearance fit on the input shaft, and the first-gear driven gear and the second-gear driven gear are respectively circumferentially fixed on; the engine is connected with the input shaft through a second motor, a clutch is integrated in the second motor, a driving disc of the clutch is fixedly connected with a flywheel on a crankshaft of the engine, and a rotor of the second motor is fixedly connected with the input shaft and a driven disc of the clutch respectively. This hybrid power system keeps off driven gear with the first motor shaft of first motor and power transmission's one, keep off driven gear coaxial arrangement, can save the arrangement space, and with the second motor with power transmission's input shaft coaxial arrangement, the second motor is the motor that the integration has the clutch among this hybrid power system, the engine passes through the flywheel and is connected with the driving disk of clutch, thereby realize the engine, second motor and input shaft coaxial arrangement, make this hybrid power system structurally both shortened the axial dimension, avoided increasing transverse dimension again, therefore whole power system's simple structure, compactness, can save the arrangement space, satisfy the arrangement requirement of most rear-drive vehicles, reduce design cost. Moreover, the hybrid power system can perform power compensation through the first motor in the gear shifting process, power interruption is prevented, smooth gear shifting is realized, power assistance can be performed through the first motor in the accelerating process, the engine can be started through the second motor, and the fact that the power system has good dynamic performance and driving performance is guaranteed. Meanwhile, the hybrid power system can realize multiple working modes such as pure electric, hybrid, range extension, direct drive of the engine and the like, and has high transmission efficiency and strong power performance.
When the synchronizer is positioned between the first-gear driven gear and the second-gear driven gear, the opposite ends of the first-gear driven gear and the second-gear driven gear are respectively provided with a combination tooth, and a gear ring of the synchronizer is respectively corresponding to the combination teeth of the first-gear driven gear and the second-gear driven gear; when the synchronizer is positioned between the first gear driving gear and the second gear driving gear, the opposite ends of the first gear driving gear and the second gear driving gear are respectively provided with a combination tooth, and the gear ring of the synchronizer is respectively corresponding to the combination teeth of the first gear driving gear and the second gear driving gear. According to the design position of the synchronizer, combination teeth are arranged on the first-gear driven gear, the second-gear driven gear or the first-gear driving gear and the second-gear driving gear, so that power transmission of the first motor shaft and the first-gear driven gear and the second-gear driven gear is realized, or power transmission of the input shaft and the first-gear driving gear and the second-gear driving gear is realized.
The power transmission device is provided with a yielding space for installing the first motor, two ends of a first motor shaft of the first motor respectively extend into the power transmission device, and two ends of the first motor shaft are respectively supported on the shell of the power transmission device through bearings. Locate power transmission outside with first motor, the radiating effect of motor is better, guarantees the long-term normal operating of motor.
The invention is further described with reference to the drawings and the specific embodiments in the following description.
Drawings
FIG. 1 is a schematic structural view of example 1 of the present invention;
fig. 2 is a schematic structural diagram of embodiment 2 of the present invention.
Detailed Description
Referring to fig. 1 to 2, a longitudinally-arranged dual-motor hybrid system includes an engine 1 and a power transmission device 15, wherein the engine 1 may be a gasoline engine or a diesel engine. The power transmission 15 includes an input shaft 6, an output shaft 14, and a first motor shaft 7 of the first motor 11. The power transmission device 15 is provided with a yielding space for installing the first motor 11, two ends of the first motor shaft 7 of the first motor 11 respectively extend into the power transmission device 15, two ends of the first motor shaft 7 are respectively supported on the shell of the power transmission device 15 through bearings, the first motor 11 is arranged outside the power transmission device 15, the heat dissipation effect of the motor is better, and the long-term normal operation of the motor is guaranteed. The input shaft 6, the output shaft 14 and the first motor shaft 7 are arranged in parallel, a first gear driving gear 4 and a second gear driving gear 5 are sequentially arranged on the input shaft 6, a first gear driven gear 8 and a second gear driven gear 10 are arranged at one end of the first motor shaft 7, namely, the first motor shaft 7 of the first motor 11 is used as an intermediate shaft of the power transmission device 15 and is coaxially arranged with the first gear driven gear 8 and the second gear driven gear 10, so that the arrangement space can be saved, the first gear driving gear 4 is meshed with the first gear driven gear 8, and the second gear driving gear 5 is meshed with the second gear driven gear 10. An output driving gear 12 is circumferentially fixed to the other end of the first motor shaft 7, an output driven gear 13 is circumferentially fixed to the output shaft 14, the output driven gear 13 and the output shaft 14 can be of an integral structure, and can also be circumferentially fixed in a spline or interference fit mode, the output driving gear 12 is meshed with the output driven gear 13, only one pair of gears is arranged between the first motor 11 and the output shaft 14 to transmit power, and output efficiency of the first motor is improved. A synchronizer 9 is arranged between the first-gear driving gear 4 and the second-gear driving gear 5 or between the first-gear driven gear 8 and the second-gear driven gear 10. The engine 1 is connected with the input shaft 6 through the second motor 2, the engine 1, the second motor 2 and the first motor 11 are located on one power transmission path, the power of the three can be superposed on the one power transmission path, the second motor 2 is integrated with the clutch 3, the clutch 3 can adopt a dry clutch or a wet clutch, a driving disc of the clutch 3 is fixedly connected with a flywheel on a crankshaft of the engine 1 through a spline, a rotor of the second motor 2 is fixedly connected with the input shaft 6 and a driven disc of the clutch 3 respectively, the clutch 3 is connected with a rotor of the second motor 2 through a driven disc to form an integral structure, and the clutch 3 and the rotor of the second motor 2 are installed in a stator of the second motor 2 together, namely the second motor 2 and the input shaft 6 of the power transmission device 15 are coaxially arranged, so that the engine, the engine and the clutch are realized, The second motor and the input shaft are coaxially arranged, so that the structure of the whole system is more compact, and the arrangement space is saved. The second motor 2 is also arranged outside the power transmission device 15, so that the heat dissipation of the motor is facilitated.
In embodiment 1, as shown in fig. 1, a synchronizer 9 is located between a first-gear driven gear 8 and a second-gear driven gear 10, the synchronizer 9 is circumferentially fixed on a first motor shaft 7, the synchronizer 9 is fixedly connected with the first motor shaft 7 through a spline, the first-gear driven gear 8 and the second-gear driven gear 10 are respectively in clearance fit on the first motor shaft 7, the first-gear driving gear 4 and the second-gear driving gear 5 are respectively circumferentially fixed on an input shaft 6, the first-gear driving gear 4, the second-gear driving gear 5 and the input shaft 6 may be of an integral structure, or may be circumferentially fixed with the input shaft 6 in a manner of spline or unthreaded hole interference fit, the opposite ends of the first-gear driven gear 8 and the second-gear driven gear 10 are respectively provided with engaging teeth, gear rings of the synchronizer 9 respectively correspond to the engaging teeth of the first-gear driven gear 8 and the second-gear driven gear 10, and power transmission of the first motor shaft 7, the first-gear driven gear 8 and the second-gear driven gear 10 is realized.
In embodiment 2, as shown in fig. 2, a synchronizer 9 is located between a first gear driving gear 4 and a second gear driving gear 5, the synchronizer 9 is circumferentially fixed on an input shaft 6, the synchronizer 9 is fixedly connected with the input shaft 6 through a spline, the first gear driving gear 4 and the second gear driving gear 5 are respectively in clearance fit with the input shaft 6, the first gear driven gear 8 and the second gear driven gear 10 are respectively circumferentially fixed on a first motor shaft 7, the first gear driven gear 8, the second gear driven gear 10 and the first motor shaft 7 may be of an integral structure, or may be circumferentially fixed with the first motor shaft 7 in a manner of spline or unthreaded hole interference fit, opposite ends of the first gear driving gear 4 and the second gear driving gear 5 are respectively provided with engaging teeth, gear rings of the synchronizer 9 respectively correspond to the engaging teeth of the first gear driving gear 4 and the second gear driving gear 5, and the power transmission of the input shaft 6, the first gear driving gear 4 and the second gear driving gear 5 is realized.
When the longitudinally-arranged double-motor hybrid power system works, the longitudinally-arranged double-motor hybrid power system has the following working modes (taking the synchronizer 9 positioned between the first-gear driven gear 8 and the second-gear driven gear 10 as an example):
1. engine only mode
The first gear drive, the clutch 3 is connected, the engine 1 works, the first motor 11 and the second motor 2 do not work, the torque of the engine 1 is transmitted to the input shaft 6 through the clutch 3, the torque on the input shaft 6 is transmitted to the first gear driven gear 8 through the first gear driving gear 4, the synchronizer 9 is connected with the first gear driven gear 8 to transmit the torque to the first motor shaft 7, then the first motor shaft 7 sequentially transmits the torque to the output shaft 14 through the output driving gear 12 and the output driven gear 13, and finally the power is output through the output shaft 14.
The second gear is driven, the clutch 3 is connected, the engine 1 works, the first motor 11 and the second motor 2 do not work, the torque of the engine 1 is transmitted to the input shaft 6 through the clutch 3, the torque on the input shaft 6 is transmitted to the second gear driven gear 10 through the second gear driving gear 5, the synchronizer 9 is connected with the second gear driven gear 10 to transmit the torque to the first motor shaft 7, then the first motor shaft 7 sequentially transmits the torque to the output shaft 14 through the output driving gear 12 and the output driven gear 13, and finally the power is output through the output shaft 14.
2. Pure electric mode
The clutch 3 is disconnected, the engine 1 and the second motor 2 do not work, the first motor 11 works, the synchronizer 9 is in a neutral position, the first motor shaft 7 sequentially transmits torque to the output shaft 14 through the output driving gear 12 and the output driven gear 13, and then power is output through the output shaft 14.
3. Hybrid drive mode
The first gear is driven, the clutch 3 is engaged, the engine 1 and the first motor 11 are both in working states, the engine 1 transmits torque to the input shaft 6 through the second motor 2, at the moment, the second motor 2 does not generate electricity or drive and only idles, the torque on the input shaft 6 is transmitted to the first gear driven gear 8 through the first gear driving gear 4, the synchronizer 9 is engaged with the first gear driven gear 8, the torque is transmitted to the first motor shaft 7, the first motor shaft 7 and the first motor 11 are superposed on the first motor shaft 7 under the working states, then the first motor shaft 7 transmits the power to the output shaft 14 through the output driving gear 12 and the output driven gear 13, and finally the output shaft 14 outputs the power.
The second gear is driven, the clutch 3 is engaged, the engine 1 and the first motor 11 are both in working states, the engine 1 transmits torque to the input shaft 6 through the second motor 2, at the moment, the second motor 2 does not generate electricity or drive and only idles, the torque on the input shaft 6 is transmitted to the second gear driven gear 10 through the second gear driving gear 5, the synchronizer 9 is engaged with the second gear driven gear 10 to transmit the torque to the first motor shaft 7, so that the torque and the power of the first motor 11 in the working state are superposed on the first motor shaft 7, then the first motor shaft 7 transmits the power to the output shaft 14 through the output driving gear 12 and the output driven gear 13, and finally the power is output by the output shaft 14.
Under the first gear driving or the second gear driving, if the engine 1 has residual power, the second motor 2 can be driven by the residual power to generate electricity for the battery module, then the battery module provides power for the first motor 11, so that the first motor 11 transmits the power to the output shaft 14 through the output driving gear 12 and the output driven gear 13, and the range extending mode under the hybrid driving is realized.
In addition, the engine 1, the first motor 11, and the second motor 2 may work simultaneously to perform hybrid driving, at this time, the clutch 3 is engaged, when the synchronizer 9 is engaged with the first-stage driven gear 8, the first-stage driving is performed, the power of the engine 1 and the second motor 2 is transmitted to the first motor shaft 7 through the first-stage driving gear 4 and the first-stage driven gear 8, is superimposed on the power of the first motor 11, and is then transmitted to the output shaft 14 through the output driving gear 12 and the output driven gear 13 to perform power output, when the synchronizer 9 is engaged with the second-stage driven gear 10, the second-stage driving is performed, the power of the engine 1 and the second motor 2 is transmitted to the first motor shaft 7 through the second-stage driving gear 5 and the second-stage driven gear 10, is superimposed on the power of the first motor 11, and is then transmitted to the output shaft 14 through the output driving gear.
4. Energy recovery
When the whole vehicle is braked, the engine 1 and the second motor 2 do not work, the clutch 3 can be in an engaged state or a disconnected state at the moment, the vehicle continuously slides forwards due to inertia, the wheels transmit torque to the output shaft 14 through the transmission shaft, and then the output shaft 14 transmits the torque to the first motor shaft 7 through the output driven gear 13 and the output driving gear 12, so that the first motor 11 is driven to rotate to generate electricity, and the first motor 11 is used for charging the battery module.
Meanwhile, the first motor shaft 7 transmits the torque to the synchronizer 9, and then the synchronizer 9 transmits the torque to the corresponding first gear driving gear 4 or second gear driving gear 5 through the first gear driven gear 8 or second gear driven gear 10 which is engaged with the synchronizer, so that the torque is transmitted to the input shaft 6 to drive the second motor 2 to rotate for power generation, and the second motor 2 charges the battery module.
When the whole vehicle idles, the clutch 3 is engaged, the synchronizer 9 is in a neutral position, the engine 1 is in an idling state, the first motor 11 stops running, the engine 1 inputs torque to the second motor 2 through the clutch 3, so that the second motor 2 rotates to generate power, and the second motor 2 charges the battery module;
5. starting an engine
The clutch 3 is engaged, the first electric machine 11 is stopped, the second electric machine 2 is operated, and the synchronizer 9 is in a neutral position to transmit torque to the engine 1 through the second electric machine 2, thereby starting the engine 1.
6. Dynamic compensation
During the gear shifting process, the first motor 11 works, the first motor shaft 7 drives the output driving gear 12 to rotate, torque is transmitted to the output driven gear 13, and therefore power is transmitted to the output shaft 14, and power compensation is achieved.
The clutch 3 is integrated in the second motor 2 of the hybrid power system, the second motor 2 and the clutch 3 are integrated, the power transmission is ensured, meanwhile, the arrangement space is saved, the first motor shaft 7 of the first motor 11 is coaxially arranged with the first gear driven gear 8 and the second gear driven gear 10 of the power transmission device 15, the second motor 2 integrated with the clutch 3 is coaxially arranged with the input shaft 6 of the power transmission device 15, the coaxial arrangement of the engine 1, the second motor 2 and the input shaft 6 is realized, the engine 1, the second motor 2 and the first motor 11 are positioned on one power transmission path, the power transmission is carried out without transversely increasing a transmission mechanism, thereby not only shortening the axial size in structure, but also avoiding increasing the transverse size, therefore, the whole power system has simple and compact structure, can reduce the design cost and save the arrangement space, the arrangement requirements of most rear-drive vehicles are met, and the rear-drive vehicle cabin can adapt to cabin arrangement of all vehicles such as pickup trucks and light trucks in the market. Moreover, no gear set is required to transmit power between the second motor 2 and the input shaft 6, and the efficiency of the second point 2 can be greatly improved. Simultaneously, this hybrid power system sets up two fender position, satisfies the dynamic nature requirement of whole car, and compares that a fender position oil consumption is lower, more economical, compares that two above keep off the position structurally compacter, and design cost is lower. In addition, this hybrid power system can carry out power compensation through first motor 11 at the in-process of shifting, guarantee to shift among the process power uninterrupted, realize the smooth-going of shifting, it is better to drive experience, and can carry out power assistance through first motor 11 at acceleration in-process, and can start the engine through second motor 2, guarantee that power system has good dynamic property and driveability, and simultaneously, this hybrid power system can realize electricelectric, mix and move, increase the journey, multiple operating mode such as engine directly drives, high transmission efficiency, the dynamic property is strong.
Claims (5)
1. The utility model provides a indulge and put bi-motor hybrid system, includes engine (1), power transmission (15), its characterized in that: the power transmission device (15) comprises an input shaft (6) and an output shaft (14), and a first motor shaft (7) of a first motor (11), the input shaft (6), the output shaft (14) and the first motor shaft (7) are arranged in parallel, the input shaft (6) is sequentially provided with a first gear driving gear (4) and a second gear driving gear (5), one end of the first motor shaft (7) is provided with a first gear driven gear (8) and a second gear driven gear (10), the first gear driving gear (4) is meshed with the first gear driven gear (8), the second gear driving gear (5) is meshed with the second gear driven gear (10), an output driving gear (12) is fixed at the other end of the first motor shaft (7) in the circumferential direction, an output driven gear (13) is circumferentially fixed on the output shaft (14), and the output driving gear (12) is meshed with the output driven gear (13); a synchronizer (9) is arranged between the first gear driving gear (4) and the second gear driving gear (5) or between the first gear driven gear (8) and the second gear driven gear (10), when the synchronizer (9) is positioned between the first gear driven gear (8) and the second gear driven gear (10), the synchronizer (9) is circumferentially fixed on the first motor shaft (7), the first gear driven gear (8) and the second gear driven gear (10) are respectively in clearance fit on the first motor shaft (7), the first gear driving gear (4) and the second gear driving gear (5) are respectively circumferentially fixed on the input shaft (6), when the synchronizer (9) is positioned between the first gear driving gear (4) and the second gear driving gear (5), the synchronizer (9) is circumferentially fixed on the input shaft (6), the first gear driving gear (4) and the second gear driving gear (5) are respectively in clearance fit on the input shaft (6), the first gear driven gear (8) and the second gear driven gear (10) are respectively fixed on the first motor shaft (7) in the circumferential direction; the engine (1) is connected with the input shaft (6) through the second motor (2), the engine (1), the second motor (2) and the first motor (11) are located on one power transmission path, the clutch (3) is integrated in the second motor (2), a driving disc of the clutch (3) is fixedly connected with a flywheel on a crankshaft of the engine (1), and a rotor of the second motor (2) is fixedly connected with a driven disc of the input shaft (6) and the clutch (3) respectively.
2. The tandem dual-motor hybrid system according to claim 1, wherein: the clutch (3) is connected with the rotor of the second motor (2) through the driven disc to form an integral structure, and the clutch (3) and the rotor of the second motor (2) are installed in the stator of the second motor (2) together.
3. The tandem dual-motor hybrid system according to claim 1, wherein: when the synchronizer (9) is positioned between the first-gear driven gear (8) and the second-gear driven gear (10), the opposite ends of the first-gear driven gear (8) and the second-gear driven gear (10) are respectively provided with a combination tooth, and a gear ring of the synchronizer (9) is respectively corresponding to the combination teeth of the first-gear driven gear (8) and the second-gear driven gear (10); when the synchronizer (9) is positioned between the first gear driving gear (4) and the second gear driving gear (5), one ends of the first gear driving gear (4) and the second gear driving gear (5) which face each other are respectively provided with a combination tooth, and the gear ring of the synchronizer (9) is respectively corresponding to the combination teeth of the first gear driving gear (4) and the second gear driving gear (5).
4. The tandem dual-motor hybrid system according to claim 1, wherein: power transmission device (15) are equipped with the space of stepping down that supplies first motor (11) installation, first motor shaft (7) both ends of first motor (11) extend respectively and go into power transmission device (15) in, and first motor shaft (7) both ends are respectively through bearing support in power transmission device (15) casing.
5. The tandem dual-motor hybrid system according to claim 3, wherein: the clutch (3) is a dry clutch or a wet clutch.
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| CN202110184381.3A CN112918238A (en) | 2021-02-10 | 2021-02-10 | Longitudinal double-motor hybrid power system |
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