CN113879104B - Power transmission system and vehicle with same - Google Patents
Power transmission system and vehicle with same Download PDFInfo
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- CN113879104B CN113879104B CN202111165022.XA CN202111165022A CN113879104B CN 113879104 B CN113879104 B CN 113879104B CN 202111165022 A CN202111165022 A CN 202111165022A CN 113879104 B CN113879104 B CN 113879104B
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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
- B60K6/42—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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
- B60K6/54—Transmission for changing ratio
- B60K6/547—Transmission for changing ratio the transmission being a stepped gearing
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- 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
Abstract
The invention discloses a power transmission system and a vehicle with the same, wherein the power transmission system comprises: the device comprises an engine, a first motor generator, a second motor generator, a first input shaft, a second input shaft, a first transfer mechanism, a second transfer mechanism, an intermediate shaft and an output shaft. The first input shaft is respectively in power connection with the engine and the first motor generator; the second input shaft is in power connection with a second motor generator; the first transfer mechanism is selectively jointed with the first input shaft and linked with the second input shaft; the second transfer mechanism is linked with the first input shaft; the intermediate shaft is linked with the first transfer mechanism and can be selectively linked with the first input shaft; the output shaft can be selectively linked with the intermediate shaft and/or the second transfer mechanism and/or the first input shaft respectively. The power transmission system realizes respective gear shifting without power interruption under various working conditions through four different transmission paths, and has compact structure and reasonable layout.
Description
Technical Field
The invention relates to the technical field of automobile transmission, in particular to a power transmission system and a vehicle with the same.
Background
In the related art, with the development of the hybrid electric vehicle technology, the application field of the hybrid electric vehicle technology is gradually increased, although the hybrid electric vehicle technology applied to a car is mature, the load of the car is light, the gear of the transmission system applied to the car cannot be adapted to a heavy-duty vehicle, and particularly, the hybrid electric vehicle technology applied to a commercial vehicle has a power interruption mode during gear shifting, and the driving performance and safety of the vehicle are seriously affected by the power interruption occurring in the heavy-duty vehicle.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. To this end, it is an object of the present invention to provide a power transmission system. The power transmission system realizes respective gear shifting without power interruption under various working conditions through four different transmission paths, and has compact structure and reasonable layout.
The invention also provides a vehicle with the power transmission system.
The power transmission system according to the present invention includes: an engine, a first motor generator, and a second motor generator; a first input shaft that is power-connected to the engine and the first motor generator, respectively; a second input shaft in power connection with the second motor generator; a first rotation-in mechanism selectively engageable with the first input shaft and linked with the second input shaft; the second transfer mechanism is linked with the first input shaft; the intermediate shaft is linked with the first transfer mechanism and can be selectively linked with the first input shaft; and the output shaft is selectively linked with the intermediate shaft and/or the second transfer mechanism and/or the first input shaft respectively.
According to the power transmission system, the first transfer mechanism, the second transfer mechanism and the intermediate shaft are arranged, so that a plurality of different working conditions of series-parallel hybrid of three power sources can be realized, four power transmission paths are constructed in the power transmission system, and in the process of shifting the power transmission system, the power of the power transmission system is not interrupted during shifting by switching among the four power transmission paths, so that the fluency of the power transmission system is improved, and the brunt feeling in the driving process is reduced.
According to some embodiments of the invention, the first transfer mechanism is configured as a first duplicate gear sleeved on the periphery of the first input shaft; the first duplicate gear is provided with a first duplicate input gear meshed with the second input shaft gear; the intermediate shaft is provided with an intermediate shaft first input gear, and the first duplicate gear is provided with a first duplicate output gear meshed with the intermediate shaft first input gear.
According to some embodiments of the invention, the second middle rotating mechanism is configured to be sleeved on a second middle rotating shaft of the intermediate shaft; the first input shaft is provided with a first input shaft first output gear, the second intermediate rotating shaft is provided with a second intermediate input gear, and the second intermediate input gear is meshed with the first input shaft first output gear; the output shaft is sleeved with the output shaft in a hollow mode and is provided with a first output shaft input gear which can be linked with the output shaft selectively, the second intermediate rotating shaft is provided with a second intermediate output gear, and the first output shaft input gear is meshed with the second intermediate output gear.
According to some embodiments of the invention, a first input shaft second output gear is sleeved on the first input shaft, and an intermediate shaft second input gear meshed with the first input shaft second output gear is arranged on the intermediate shaft; further comprising: a first shifting device disposed on the first input shaft and selectively engaging the first input shaft with the first duplicate gear or the first input shaft second output gear.
According to some embodiments of the invention, a second gear shifting device is provided on the output shaft, the second gear shifting device selectively engaging the output shaft with the first input shaft or the output shaft first input gear with the output shaft.
According to some embodiments of the invention, a plurality of countershaft output gears are disposed on the countershaft, and a plurality of output shaft second input gears are nested on the output shaft in one-to-one meshing engagement with the countershaft output gears, the output shaft being selectively engageable with one of the output shaft second input gears.
According to some embodiments of the invention, the power transmission system further comprises: a third shifting device provided to the output shaft and selectively engaging one of the plurality of output shaft second input gears with the output shaft.
According to some embodiments of the invention, the intermediate shafts are configured as one or more, each intermediate shaft is linked with the first transfer mechanism respectively, and each intermediate shaft is provided with a plurality of intermediate shaft output gears.
According to some embodiments of the invention, a clutch is disposed between an engine output shaft of the engine and the first input shaft to selectively engage the engine output shaft and the first input shaft.
A vehicle according to another aspect of the embodiment of the invention is briefly described below.
The vehicle according to the invention applies the power transmission system of the above embodiment, so that the vehicle can be a hybrid heavy-duty vehicle, and the vehicle has multiple gears to adapt to different loads, thereby effectively reducing oil consumption. Meanwhile, when the vehicle is shifted, power interruption can be avoided, power switching is smoother, and the comfort and the power performance of the vehicle are good.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic representation of a powertrain according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a powertrain system including a rangebox according to an embodiment of the present invention.
FIG. 3 is a schematic representation of a single countershaft powertrain according to one embodiment of the present invention.
FIG. 4 is a schematic representation of a single countershaft powertrain according to another exemplary embodiment of the present invention.
Reference numerals are as follows:
an engine 1; an engine output shaft 70; a first motor generator 2; a second motor generator 3; a clutch 4;
a first input shaft 10; first input shaft first output gear 11; a first input shaft second output gear 12;
a second input shaft 20; a second input shaft gear 21;
an intermediate shaft 30; an intermediate shaft first input gear 31; first countershaft output gear 32a; a second countershaft output gear 32b; an intermediate shaft second input gear 33;
an output shaft 40; an output shaft first input gear 41; first output shaft second input gear 42a; second output shaft second input gear 42b;
a second central rotating shaft 10a; a second intermediate input gear 10b; a second intermediate output gear 10c;
a first double gear 20a; a first duplicate input gear 20b; a first duplicate output gear 20c;
the first shifting device k1; the second shifting device k2; the third shifting device k3;
the third input shaft 40a; a third input shaft output gear 61; a sub-transmission shift mechanism k4;
an auxiliary transmission intermediate shaft 50; an auxiliary change countershaft input gear 50a; an auxiliary transmission intermediate shaft output gear 50b;
a range output shaft 60; the range output shaft inputs gear 62.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
A power transmission system according to an embodiment of the invention is described below with reference to fig. 1 to 4, including: the engine 1, the first motor generator 2 and the second motor generator 3, the first input shaft 10 is respectively connected with the engine 1 and the first motor generator 2 in a power mode, and the second input shaft 20 is connected with the second motor generator 3 in a power mode; the first transfer mechanism is selectively engageable with the first input shaft 10 and is coupled with the second input shaft 20, the second transfer mechanism is coupled with the first input shaft 10, the intermediate shaft 30 is coupled with the first transfer mechanism and is selectively coupled with the first input shaft 10, and the output shaft 40 is selectively coupled with the intermediate shaft 30 and/or the second transfer mechanism and/or the first input shaft 10.
In the related art, with the development of the hybrid electric vehicle technology, the applicable field of the hybrid electric vehicle technology is gradually increased, although the hybrid electric vehicle technology applied to the car is mature, the load of the car is light, the gear applied to the transmission system of the car cannot be adapted to a heavy-duty vehicle, and particularly, the hybrid electric vehicle transmission system applied to a commercial vehicle has a power interruption mode during gear shifting, and the running performance and safety of the vehicle are seriously affected by the power interruption occurring in the heavy-duty vehicle.
In the present application, there are four transmission paths in the drivetrain.
The first one is: the engine 1 and/or the first motor generator 2 and/or the second motor generator 3 are/is used as a power source, the first input shaft 10 is linked with the second relay mechanism, and the output shaft 40 is selectively linked with the second relay mechanism, so that the power of the engine 1 and/or the first motor generator 2 and/or the second motor generator 3 can be output through the first input shaft 10, the second relay mechanism and the output shaft 40;
a second bar: the engine 1 and/or the first motor generator 2 and/or the second motor generator 3 are/is used as a power source, the first input shaft 10 is selectively connected with the first duplicate gear 20a, the second input shaft 20 is linked with the first transfer mechanism and the first input shaft, the first transfer mechanism is linked with the intermediate shaft 30, and the output shaft 40 is selectively linked with the intermediate shaft 30 to realize the output of power;
and a third: the engine 1 and/or the first motor generator 2 are/is used as a power source, the first input shaft 10 is selectively connected with the first input shaft second output gear 12, the first input shaft 10 is linked with the intermediate shaft 30, and the output shaft 40 is selectively linked with the intermediate shaft 30 to realize power output;
fourth, the method comprises the following steps: the engine 1 and/or the first motor generator 2 and/or the second motor generator 3 serve as power sources, and the output shaft 40 is directly selected to be linked with the first input shaft 10 to achieve power output.
In the above four power transmission paths, each transmission path may correspond to a plurality of gears, for example, the first transmission path has a third gear of the power transmission system, the second transmission path has a first gear and a fourth gear of the power transmission system, the third transmission path has a second gear and a fifth gear of the power transmission system, and the fourth transmission path has a sixth gear of the power transmission system.
According to the power transmission system of the invention, in the gear shifting control of the engine 1 and/or the first motor generator 2, the second motor generator 3 can keep the power transmission path to transmit power, the power is transmitted to the output shaft 40 through the second input shaft 20, the first intermediate rotation mechanism and the intermediate shaft 30, the power output of the second motor generator 3 in the first or fourth gear is kept, and the power of the engine 1 and/or the first motor generator 2 can realize the power-interruption-free switching among the four transmission paths, so that the power-interruption-free switching of gear shifting of different gears is realized.
According to the power transmission system, the first transfer mechanism, the second transfer mechanism and the intermediate shaft 30 are arranged, so that a plurality of different working conditions of series-parallel hybrid of three power sources can be realized, four power transmission paths are constructed in the power transmission system, and in the process of shifting the power transmission system, the power of the power transmission system is not interrupted during shifting by switching among the four power transmission paths, so that the fluency of the power transmission system is improved, and the brunt feeling in the driving process is reduced.
According to an embodiment of the present invention, as shown in fig. 1, the first intermediate rotation mechanism is configured as a first duplicate gear 20a sleeved on the outer periphery of the first input shaft 10, wherein the second input shaft 20 is provided with a second input shaft gear 21, the first duplicate gear 20a is provided with a first duplicate input gear 20b engaged with the second input shaft gear 21, the intermediate shaft 30 is provided with an intermediate shaft first input gear 31, and the first duplicate gear 20a is provided with a first duplicate output gear 20c engaged with the intermediate shaft first input gear 31. The first intermediate rotation mechanism is constructed as a first duplicate gear 20a, and is provided with a first duplicate input gear 20b and a first duplicate output gear 20c, so that the second input shaft 20 and the intermediate shaft 30 can be linked; the first input shaft 10 is sleeved with the first duplicate gear 20a, so that mutual interference between the first duplicate gear 20a and the first input shaft 10 can be avoided, the occupied space is small, the layout is more reasonable, and the size of a power transmission system is reduced.
According to an embodiment of the present invention, as shown in fig. 1, the second intermediate rotation mechanism is configured to be sleeved on a second intermediate rotation shaft 10a of the intermediate shaft 30, the first input shaft 10 is provided with a first input shaft 10 output gear, the second intermediate rotation shaft 10a is provided with a second intermediate input gear 10b, the second intermediate input gear 10b is engaged with the first input shaft first output gear 11, the output shaft 40 is sleeved on the output shaft 40 and is provided with an output shaft first input gear 41 selectively linked with the output shaft 40, the second intermediate rotation shaft 10a is provided with a second intermediate output gear 10c, and the output shaft first input gear 41 is engaged with the second intermediate output gear 10 c.
The second intermediate rotation mechanism is configured as a second intermediate rotation shaft 10a, and a second intermediate rotation input gear 10b and a second intermediate rotation output gear 10c are provided, so that the power of the first input shaft 10 can be transmitted to the output shaft 40, and the output shaft first input gear 41 can be selectively engaged with the output shaft 40 to realize the engagement control of the first transmission path; the intermediate shaft 30 is sleeved with the second intermediate shaft 10a, so that mutual interference between the second intermediate shaft 10a and the intermediate shaft 30 can be avoided, the occupied space is small, the layout is more reasonable, and the size of a power transmission system is reduced.
According to one embodiment of the present invention, as shown in fig. 1, a first input shaft second output gear 12 is sleeved on the first input shaft 10, an intermediate shaft second input gear 33 engaged with the first input shaft second output gear 12 is further disposed on the intermediate shaft 30, and the first input shaft second output gear 12 can transmit power to the intermediate shaft 30 to realize power transmission of a third power transmission path.
A first gear shift device k1 is further provided in the power transmission system according to the present invention, and the first gear shift device k1 is provided to the first input shaft 10 to selectively engage the first input shaft 10 with the first double pinion 20a or the first input shaft with the second output gear 12. When the first input shaft 10 is engaged with the first dual gear 20a, the second transmission path of the power transmission system can be maintained, that is, the power transmission of the power transmission system in the first gear and the fourth gear is realized, and the power coupling between the first input shaft 10 and the second input shaft 20 can also be realized. When the first input shaft 10 is combined with the first input shaft and the second output gear 12, the third power transmission path of the power transmission system can be maintained, that is, the power transmission of the power transmission system in the second gear and the fifth gear is realized.
According to one embodiment of the present invention, as shown in fig. 1, the output shaft 40 is provided with a second gear shift device k2, and the second gear shift device k2 selectively engages the output shaft 40 with the first input shaft 10 or the output shaft first input gear 41 with the output shaft 40. When the second gear shifting device k2 engages the output shaft 40 with the first input shaft 10, it is possible to realize that the engine 1 or the first motor generator 2 provides forward gear drive independently in the sixth gear directly or in parallel linkage with the first motor generator 1, or the second motor generator 2 provides forward gear drive in common parallel linkage in the fourth gear or the sixth gear. The second gear shift device k2 engaging the output shaft first input gear 41 with the output shaft 40 can realize a first transmission path to realize the three-gear transmission of the power transmission system, and the engine 1 can be directly driven or linked in parallel with the first motor generator 2 independently in the third gear, or the second motor generator 3 can be linked in parallel jointly in the first gear, the third gear or the fourth gear to provide forward gear driving.
According to one embodiment of the present invention, as shown in fig. 1, the countershaft 30 is provided with a plurality of countershaft output gears, which may be a first countershaft output gear 32a and a second countershaft output gear 32b; a plurality of output shaft second input gears which are meshed with the output gears of the intermediate shaft one by one are sleeved on the output shaft 40, namely a first output shaft second input gear 42a and a second output shaft second input gear 42b, and the output shaft 40 can be selectively meshed with one of the first output shaft second input gear 42a or the second output shaft second input gear 42 b.
Providing a plurality of countershaft output gears on the countershaft 30 and a plurality of output shaft second input gears on the output shaft 40 enriches the ratio of transmission between the countershaft 30 and the output shaft 40. According to an embodiment of the present invention, as shown in fig. 1, the power transmission system further includes a third gear shift device k3, the third gear shift device k3 being provided to the output shaft 40 and selectively engaging one of the plurality of output shaft second input gears with the output shaft 40.
The third shifting device k3 is used to change the engagement of the second input gear of the different output shafts with the output shaft 40, so that the switching of the different gears of the drive train between the intermediate shaft 30 and the output shaft 40 is achieved.
According to one embodiment of the present invention, as shown in fig. 1, the intermediate shafts 30 are configured as one or more, each of the intermediate shafts 30 is linked with the first relay mechanism, and each of the intermediate shafts 30 is provided with a plurality of intermediate shaft output gears.
By arranging the plurality of intermediate shafts 30, the load of the power transmitted by the intermediate shafts 30 can be increased, the application range of the power transmission system is increased, and the power transmission system can be suitable for heavy-duty vehicles.
According to one embodiment of the present invention, as shown in fig. 1, a clutch 4 is provided between an engine output shaft 70 of the engine 1 and the first input shaft 10, and the clutch 4 selectively engages the engine output shaft 70 and the first input shaft 10.
The clutch 4 is adapted to control whether the engine 1 is connected to the first input shaft 10, and in the electric-only state, the engine 1 may be disconnected from the first input shaft 10, and the output may be performed using only the power of the first motor generator 2 and/or the second motor generator 3.
The vehicle according to the present invention is briefly described below. The vehicle is provided with the power transmission system in any one of the above embodiments, so that the vehicle can be a hybrid heavy-duty vehicle, and the vehicle has multiple gears to adapt to different loads, thereby effectively reducing oil consumption. Meanwhile, when the gear shifting process of the vehicle is carried out, power interruption can be avoided, power shifting is smoother, and the comfort and the power performance of the vehicle are good.
When the vehicle is in the parking charging mode, the electric quantity of the vehicle-mounted power battery is low, the first motor generator 2 converts the mechanical power of the engine 1 into electric energy through electromechanical conversion, so that the vehicle-mounted power battery is charged, and the second motor generator 3 is in a stop state. At this time, the clutch 4 is engaged, and the first, second and third shifting devices k1, k2, k3 are all in a neutral state.
When the vehicle is in an electric pure driving mode, the electric quantity of the vehicle-mounted power battery is sufficient, the first motor generator 2 and/or the second motor generator 3 provide electric pure driving for the vehicle, the first motor generator 2 can be driven or neutral in six gears, and the second motor generator 3 can work in the first gear, the third gear, the fourth gear or the sixth gear. When the vehicle shifts gears, one motor keeps the current gear, and the other motor can be smoothly switched to other gears, so that unpowered interrupted gear shifting is realized. When the clutch 4 is disengaged, the first, second and third shifting devices k1, k2, k3 provide drive or neutral, as required.
When the vehicle is in a series hybrid mode and the electric quantity of the vehicle-mounted power battery is insufficient, the first motor generator 2 converts the mechanical power of the engine 1 into electric energy so as to charge the vehicle-mounted power battery, part of the electric energy can be directly supplied to the second motor generator 3, and the second motor generator 3 independently provides forward gear or reverse gear driving in first gear or fourth gear. At this time, the clutch 4 is engaged, the first shifting device k1 and the second shifting device k2 are in neutral, and the third shifting device k3 is engaged with the first output shaft second input gear 42a or the second output shaft second input gear 42 b. The power is transmitted to the second input shaft 20 by the second motor generator 3, and then transmitted to the first transfer mechanism by the second input shaft 20, the first transfer mechanism transmits the power to the intermediate shaft 30, the intermediate shaft 30 transmits the power to the first intermediate shaft output gear 32a or the second intermediate shaft output gear 32b, after the third gear shifting device k3 is shifted, the power is output through the output shaft 40, and the vehicle can be driven to move forward or backward by the first gear or the fourth gear of the second motor.
Specifically, the second motor generator 3 outputs power, the second input shaft 20 is in power connection with the second motor generator 3, the second input shaft 20 is provided with a second input shaft gear 21, the first duplicate input gear 20b is meshed with the second input shaft gear 21, the first duplicate input gear 20b is located on a first intermediate rotation mechanism, namely a first duplicate gear 20a, the first duplicate gear 20a is provided with a first duplicate output gear 20c, the first duplicate output gear 20c is meshed with an intermediate shaft 30 input gear on the intermediate shaft 30, the intermediate shaft 30 is provided with a first intermediate shaft output gear 32a and a second intermediate shaft output gear 32b, the first intermediate shaft output gear 32a and the second intermediate shaft output gear 32b are meshed with a first output shaft second input gear 42a and a second output shaft second input gear 42b on the output shaft 40 one by one, so that the power is output to the output shaft 40, and the power is transmitted to the vehicle for driving.
As shown in fig. 1, the power transmission system of the present application employs four different transmission paths for power-interruption-free shifting between six gears, and during the gear shifting, the power source that provides drive to the output shaft 40 is also shifted between the engine 1, the first motor-generator 2, and the second motor-generator 3.
When the vehicle is in the first engine gear direct drive or parallel hybrid mode, the clutch 4 is closed, the first gear shift device k1 engages the first input shaft 10 with the first duplicate output gear 20c, the second gear shift device k2 is in neutral, and the third gear shift device k3 engages the output shaft 40 with the second output shaft second input gear 42 b. The engine 1 and the first motor generator 2 and/or the second motor generator 3 serve as a power source, power of the power source is transmitted to the intermediate shaft 30 through the first duplex output gear 20c by the first input shaft 10 and/or the second input shaft 20, and the intermediate shaft 30 transmits power to the output shaft 40 through the second output shaft second input gear 42 b. When the vehicle is in the engine second gear direct drive or parallel hybrid mode, the clutch 4 is closed, the first gear shift device k1 engages the first input shaft 10 with the first input shaft second output gear 12, the second gear shift device k2 is in neutral, and the third gear shift device k3 engages the output shaft 40 with the second output shaft second input gear 42 b. The engine 1 is independently in the second gear directly driven or coupled in parallel with the first motor generator 2, and/or the second motor generator 3 is coupled in common in parallel in the first gear to provide forward gear drive. The power of the engine 1 and/or the first motor generator 2 is transmitted to the intermediate shaft 30 by the first duplicate output gear 20c of the first input shaft 10, and/or the power of the second motor generator 2 is transmitted to the intermediate shaft 30 from the intermediate shaft first input gear 31 to be linked, and the intermediate shaft 30 transmits the power to the output shaft 40 by the second output shaft second input gear 42 b.
When the vehicle is in the third gear direct-drive or parallel hybrid mode of the engine, the clutch 4 is closed, and the second gear shifting device k2 is used for engaging the output shaft 40 with the first input gear 41 of the output shaft; or the first gear shift device k1 is in neutral, the third gear shift device k3 is in neutral or engages the output shaft 40 with the first output shaft second input gear 42a or the second output shaft second input gear 42b, so that the second motor generator 3 is in neutral or the first or fourth gear; or the third gearshift k3 is in neutral, the first gearshift k1 engages the first input shaft 10 with the first dual output gear 20c, and the second motor generator 3 is also in the third gear. The engine 1 is independently in the third gear directly driven or in parallel linkage with the first motor generator 2, and/or the second motor generator 3 is in the first gear, third gear, fourth gear or neutral gear in parallel linkage to provide forward gear drive.
When the vehicle is in the fourth gear direct drive or parallel hybrid mode of the engine, the clutch 4 is closed, the first gear shifting device k1 engages the first input shaft 10 with the first duplicate output gear 20c, the second gear shifting device k2 is in neutral, and the third gear shifting device k3 engages the output shaft 40 with the first output shaft and the second input gear 42 a. The engine 1 provides forward drive independently in the fourth gear directly or in parallel linkage with the first motor generator 2 and/or the second motor generator 3. The power of the power source is transmitted from the first input shaft 10 and/or the second input shaft 20 to the intermediate shaft 30 through the first dual output gear 20c, and the intermediate shaft 30 transmits the power from the first output shaft second input gear 42a to the output shaft 40.
When the vehicle is in the fifth-gear direct-drive or parallel hybrid mode of the engine, the clutch 4 is closed, the first gear shifting device k1 engages the first input shaft 10 with the first input shaft second output gear 12, the second gear shifting device k2 is in neutral, and the third gear shifting device k3 engages the output shaft 40 with the first output shaft second input gear 42 a. The engine 1 is independently in the fifth gear directly driven or coupled in parallel with the first motor generator 2, and/or the second motor generator 3 is in common parallel coupled in the fourth gear to provide forward gear drive. The power of the engine 1 and/or the first motor generator 2 is transmitted to the intermediate shaft 30 from the first input shaft second output gear 12 of the first input shaft 10, and/or the power of the second motor generator 2 is transmitted to the intermediate shaft 30 from the intermediate shaft first input gear 31 in a linkage manner, and the intermediate shaft 30 transmits the power to the output shaft 40 from the first output shaft second input gear 42 a.
When the vehicle is in a sixth-gear direct-drive or parallel hybrid mode of the engine, the clutch 4 is closed, the first gear shifting device k1 engages the first input shaft 10 with the first duplicate output gear 20c, the second gear shifting device k2 engages the output shaft 40 with the first input shaft first output gear 11, and the third gear shifting device k3 is in a neutral gear; or clutch 4 is closed, the first shifting device k1 is in neutral, the second shifting device k2 engages the output shaft 40 with the first input shaft first output gear 11, and the third shifting device k3 is in neutral or engages the output shaft 40 with the first output shaft second input gear 42 a. The engine 1 is independently driven directly or linked in parallel with the first motor generator 2 in the sixth gear, or the second motor generator 3 is jointly linked in parallel to provide forward gear driving in the fourth gear, the sixth gear or the neutral gear. The engine 1 and/or the first motor generator 2 power is directly transmitted from the first input shaft 10 to the output shaft 40. Further, when the vehicle is continuously in the high-speed cruising direct drive mode of the sixth gear of the engine, the first gear shift device k1 and the third gear shift device k3 can be arranged in a neutral gear, the second motor generator 3 can be completely stopped in a stationary manner, and the related shaft tooth transmission mechanism connected with the second motor generator 3 comprises a second input shaft 20, a second input shaft gear 21, a second input shaft gear 12, a first duplicate input gear 20b, a first duplicate output gear 20c, an intermediate shaft 30, an intermediate shaft first input gear 31, a first intermediate shaft output gear 32a, a second intermediate shaft output gear 32b, an intermediate shaft second input gear 33, a first output shaft second input gear 42a and a second output shaft second input gear 42b which are completely in a stationary and non-rotating state, so that the oil stirring loss of the transmission system in high-speed driving is greatly reduced, and the fuel economy of the vehicle is improved.
According to an embodiment of the present invention, as shown in fig. 1 to 4, by disposing the first motor generator 2 and the second motor generator 3 offset from the engine 1, it is possible to reduce the torque requirement of the first motor generator 2 and the second motor generator 3, simplify the oil seal disposition of the first motor generator 2 and the second motor generator 3, make the oil seal disposition of the first motor generator 2, the second motor generator 3, and the engine 1 simpler, and have a better lubrication sealing effect, the engine 1 may be disposed coaxially with the first input shaft 10, and the first motor generator 2 may be linked with the first input shaft 10 through a one-stage reduction gear.
According to one embodiment of the present invention, as shown in fig. 3, an intermediate axle 30 structure can be used, which reduces the matching of the axle teeth and is suitable for light vehicles with less traction requirements.
According to an embodiment of the present invention, as shown in fig. 4, in the power transmission system based on the single-countershaft structure, the second input shaft gear 21 connected with the second motor generator 3 is directly meshed with the countershaft first input gear 31, and the assembly of the first duplicate input gear 20b is eliminated, so that the transmission path of the second motor generator 3 is further simplified, and the cost performance of the transmission system is improved.
According to an embodiment of the present invention, the engine 1 and the first and second motor generators 2 and 3 may also be coaxially arranged, a clutch 4 may be provided between the output shaft of the engine 1 and the first motor generator 2, and the first input shaft 10 is connected to the output shaft of the first motor generator 2. The engine 1, the first motor generator 2 and the second motor generator 3 are coaxially arranged, so that the structure of a power transmission system is more compact, and the volume of the power transmission system is smaller.
According to an embodiment of the present invention, the power transmission system further includes a sub-transmission, as shown in fig. 2, the sub-transmission has a third input shaft 40a and a sub-transmission output shaft 60, a sub-transmission intermediate shaft 50, the third input shaft 40a is connected to the output shaft 40, the third input shaft 40a is provided with a third input shaft output gear 61, the sub-transmission intermediate shaft 50 is provided with a sub-transmission intermediate shaft input gear 50a, the sub-transmission intermediate shaft input gear 50a is engaged with the third input shaft output gear 61, the sub-transmission intermediate shaft 50 is provided with a sub-transmission intermediate shaft output gear 50b, the sub-transmission output shaft 60 is idly provided with a sub-transmission output shaft input gear 62 engaged with the sub-transmission intermediate shaft output gear 50b, the sub-transmission is provided with a sub-transmission shift mechanism k4, and the sub-transmission shift mechanism k4 selectively engages the third input shaft 40a with the sub-transmission output shaft 60 or the sub-transmission output shaft 60 with the sub-transmission output shaft input gear 62. Through setting up the auxiliary transmission case, can carry out the twice and enlarge to the fender position of main transmission case, further richened power transmission system's fender position, can be adapted to heavy and overweight vehicle.
In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A powertrain system, comprising:
an engine, a first motor generator, and a second motor generator;
the first input shaft is in power connection with the engine and the first motor generator respectively;
a second input shaft in power connection with the second motor generator;
a first rotation-in mechanism selectively engageable with the first input shaft and in linkage with the second input shaft;
the second transfer mechanism is linked with the first input shaft;
the intermediate shaft is linked with the first transfer mechanism and can be selectively linked with the first input shaft;
and the output shaft is selectively linked with the intermediate shaft and/or the second transfer mechanism and/or the first input shaft respectively.
2. The drivetrain of claim 1, wherein the first rotation-reversing mechanism is configured as a first duplicate gear that is sleeved around the first input shaft; wherein
A second input shaft gear is arranged on the second input shaft, and a first duplicate input gear meshed with the second input shaft gear is arranged on the first duplicate gear;
the intermediate shaft is provided with an intermediate shaft first input gear, and the first duplicate gear is provided with a first duplicate output gear meshed with the intermediate shaft first input gear.
3. The drivetrain of claim 2, wherein the second countershaft mechanism is configured to be sleeved on a second countershaft of the countershaft; the first input shaft is provided with a first input shaft first output gear, the second intermediate rotating shaft is provided with a second intermediate rotating input gear, and the second intermediate rotating input gear is meshed with the first input shaft first output gear;
the output shaft is sleeved with the output shaft in a hollow mode and is provided with a first output shaft input gear which can be linked with the output shaft selectively, the second intermediate rotating shaft is provided with a second intermediate output gear, and the first output shaft input gear is meshed with the second intermediate output gear.
4. The powertrain system of claim 3, wherein the first input shaft has a first input shaft second output gear thereon, and the countershaft has a countershaft second input gear thereon for meshing engagement with the first input shaft second output gear;
further comprising:
a first shifting device disposed on the first input shaft and selectively engaging the first input shaft with the first duplicate gear or the first input shaft second output gear.
5. A drivetrain according to claim 3, wherein the output shaft is provided with a second shift arrangement which selectively engages the output shaft with the first input shaft or the output shaft first input gear with the output shaft.
6. The powertrain system of claim 1, wherein the countershaft has a plurality of countershaft output gears disposed thereon, and wherein the output shaft has a plurality of output shaft second input gears intermeshed therewith one for each, the output shaft being selectively engageable with one of the output shaft second input gears.
7. The drivetrain of claim 6, further comprising:
a third shifting device provided to the output shaft and selectively engaging one of the plurality of output shaft second input gears with the output shaft.
8. The powertrain system of claim 6, wherein the intermediate shafts are configured as one or more, each intermediate shaft is linked with the first transfer mechanism, and each intermediate shaft is provided with a plurality of intermediate shaft output gears.
9. The powertrain system of claim 1, wherein a clutch is disposed between an engine output shaft of the engine and the first input shaft to selectively engage the engine output shaft and the first input shaft.
10. A vehicle characterized by comprising a power transmission system according to any one of claims 1-9.
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| CN202111165022.XA CN113879104B (en) | 2021-09-30 | 2021-09-30 | Power transmission system and vehicle with same |
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| CN113879104B true CN113879104B (en) | 2023-02-21 |
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| WO2023134222A1 (en) * | 2022-01-12 | 2023-07-20 | 如果科技有限公司 | Power transmission system and vehicle |
| CN115465083A (en) * | 2022-07-28 | 2022-12-13 | 湖南行必达网联科技有限公司 | Dual-motor hybrid power transmission system and working machine |
| CN115091940A (en) * | 2022-07-28 | 2022-09-23 | 湖南行必达网联科技有限公司 | Seven keep off hybrid power transmission system and vehicle |
| CN115419685A (en) * | 2022-07-28 | 2022-12-02 | 湖南行必达网联科技有限公司 | Double-motor hybrid gearbox and operation machine |
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