CN113879103A - Power transmission system and vehicle with same - Google Patents
Power transmission system and vehicle with same Download PDFInfo
- Publication number
- CN113879103A CN113879103A CN202111161869.0A CN202111161869A CN113879103A CN 113879103 A CN113879103 A CN 113879103A CN 202111161869 A CN202111161869 A CN 202111161869A CN 113879103 A CN113879103 A CN 113879103A
- Authority
- CN
- China
- Prior art keywords
- shaft
- gear
- input
- output
- output shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
-
- 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
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Hybrid Electric Vehicles (AREA)
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; 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 three 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 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.
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 two 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 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 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, three 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 can be uninterrupted in the shifting process by switching among the three power transmission paths, so that the smoothness of the power transmission system is improved, and the setback feeling in the driving process is reduced.
According to some embodiments of the invention, the first rotation-transmitting mechanism is configured as a first duplicate gear sleeved on the outer 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; an intermediate shaft input gear is arranged on the intermediate shaft, and a first duplicate output gear meshed with the intermediate shaft input gear is arranged on the first duplicate gear.
According to some embodiments of the invention, the power transmission system further comprises: a first shifting device disposed on the first input shaft and selectively engaging the first input shaft with the first duplicate gear.
According to some embodiments of the present invention, the second transfer mechanism is configured as one or more second transfer shafts, a second transfer input gear and a second transfer output gear, wherein the second transfer shafts are disposed offset in parallel with the intermediate shafts in the circumferential direction of the first input shaft and the output shaft, the second transfer input gear and the second transfer output gear are fixedly disposed on the second transfer shafts, the first input shaft is provided with a first input shaft output gear, and the second transfer input gear is meshed with the first input shaft output gear; and a first output shaft input gear which can be selectively combined with the output shaft is sleeved above the output shaft, and the first output shaft input gear is meshed with the second transfer 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 with the output shaft first input gear.
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 representation 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 system including a rangebox according to an embodiment of the present invention.
FIG. 5 is a schematic representation of a single countershaft powertrain according to another exemplary embodiment of the present invention.
FIG. 6 is a schematic representation of a single countershaft powertrain system including a rangebox according to another exemplary embodiment of the present invention.
Reference numerals:
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; a first input shaft output gear 11;
a second input shaft 20; a second input shaft gear 21;
an intermediate shaft 30; an intermediate shaft input gear 31; first countershaft output gear 32 a; a second countershaft output gear 32 b;
an output shaft 40; an output shaft first input gear 41; first output shaft second input gear 42 a; second output shaft second input gear 42 b;
a second central rotating shaft 10 a; a second intermediate input gear 10 b; a second intermediate output gear 10 c;
a first double gear 20 a; a first duplicate input gear 20 b; a first duplicate output gear 20 c;
the first shifting device k 1; the second shifting device k 2; the third shifting device k 3;
the third input shaft 40 a; a third input shaft output gear 61; a subtransmission shift mechanism k 4;
an auxiliary transmission intermediate shaft 50; an auxiliary change countershaft input gear 50 a; an auxiliary change countershaft output gear 50 b;
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 3, 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 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, respectively.
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 the 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 this application, there are three mutually non-interfering drive paths in the drivetrain.
The first one is that 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.
The second one is that the engine 1 and/or the first motor generator 2 and/or the second motor generator 3 are used as power sources, the second input shaft 20 is linked with the first transfer mechanism and/or 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 power output.
The third is that the engine 1 and/or the first motor generator 2 and/or the second motor generator 3 are used as power sources, and the output shaft 40 is directly selected to be linked with the first input shaft 10 to realize the output of power.
In the three power transmission paths, each transmission path may correspond to a plurality of gears, the gears in each transmission path are alternately increased, for example, the first transmission path has two gears of the power transmission system, the second transmission path has one gear and three gears of the power transmission system, and the third transmission path has four gears of the power transmission system, when two adjacent gears are switched, the different power transmission paths do not interfere with each other, and when the gears are switched, the transmission paths of the three powers do not interfere with each other.
In an embodiment of the present invention, as shown in fig. 1, during the switching process of the engine 1 and/or the first motor generator 2 from the first gear to the second gear, the power of the engine 1 and/or the first motor generator 2 requires the output shaft 40 to switch between the intermediate shaft 30 and the second intermediate mechanism, and the second motor generator 3 can be used to output power through the transmission paths of the second input shaft 20, the first intermediate mechanism and the intermediate shaft 30 in advance, so that when the output shaft 40 is disconnected from the second intermediate mechanism, the power between the intermediate shaft 30 and the output shaft 40 is not interrupted, the power interruption of the output shaft 40 is avoided during the switching process, the fluency of the power transmission system and the comfort of the power transmission are improved, and the feeling of brunt during the driving process is reduced.
Similarly, during the process of switching the engine 1 and/or the first motor generator 2 from the second gear to the third gear, the engine 1 and/or the first motor generator 2 need to be switched from the output shaft 40 to the intermediate shaft 30 from the second transfer mechanism, the second motor generator 3 can be used to output power through the first transfer mechanism, the intermediate shaft 30 and the output shaft 40 in advance to enter the third gear, the loss of power interruption can be reduced during the process of disconnecting the second transfer mechanism from the output shaft 40 and performing linkage switching to the intermediate shaft 30 and the output shaft 40 by the power of the engine 1 and/or the first motor generator 2, the power interruption during gear shifting can be compensated, the power interruption of the output shaft 40 can be avoided, the fluency of the power transmission system and the comfort of the power transmission can be improved, and the jerk feeling during driving can be reduced.
Similarly, during the shifting of the engine 1 and/or the first motor generator 2 from third gear to fourth gear, the engine 1 and/or the first motor generator 2 power is switched to be directly output from the first input shaft 10 to the output shaft 40 after the output needs to be disconnected from the intermediate shaft 30 to the output shaft 40, the second motor generator 3 can be used to output power in the third gear through the first intermediate rotation mechanism, the intermediate shaft 30 and the output shaft 40 in advance, the loss of power interruption is reduced during the process of disconnecting the intermediate shaft 30 from the output shaft 40 and directly switching the power of the engine 1 and/or the first motor generator 2 to the first input shaft 10 and the output shaft 40 in linkage, the power interruption during shifting is compensated, and the power interruption of the output shaft 40 is avoided, so that the fluency of a power transmission system and the comfort of power transmission are improved, and the pause and contusion in the driving process are reduced. Further, the first intermediate rotation mechanism is selectively engageable with the first input shaft 10 to achieve a power connection among the engine 1, the first input shaft 10, and the second input shaft 20, adapted to achieve a maximum torque output when the power transmission system is short of power, while the power transmission system of the present application can also utilize three different transmission paths, a series hybrid mode in which the output is performed only by the second motor generator 3 while the engine 1 drives the first motor generator 2 to generate electric power.
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, three 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 can be uninterrupted in the shifting process by switching among the three power transmission paths, so that the smoothness of the power transmission system is improved, and the brunt feeling in the driving process is reduced.
According to some embodiments of the present invention, as shown in fig. 1, the first rotation-in-middle 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 double gear 20a is provided with a first double input gear 20b that meshes with the second input shaft gear 21. The intermediate shaft 30 is provided with an intermediate shaft input gear 31, the first duplicate gear 20a of the first intermediate rotation mechanism is provided with a first duplicate output gear 20c, and the first duplicate output gear 20c is meshed with the intermediate shaft input gear 31, so that the intermediate shaft 30 is linked with the first intermediate rotation mechanism.
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 some embodiments of the present invention, as shown in fig. 1, a first shifting device k1 is further provided in the powertrain, and a first shifting device k1 is provided to the first input shaft 10 to selectively engage the first input shaft 10 with the first duplicate gear 20 a.
When the first input shaft 10 is engaged with the first duplicate 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 second 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.
According to some embodiments of the present invention, as shown in fig. 1, the second transfer mechanism is configured as one or more second transfer shafts 10a, a second transfer input gear 10b and a second transfer output gear 10c, the second transfer shafts 10a are arranged parallel to the intermediate shaft 30 and offset in the axial direction of the first input shaft 10, the second transfer input gear 10b and the second transfer output gear 10c are fixedly arranged on the second transfer shafts 10a, the first input shaft 10 is provided with a first input shaft output gear 11, the second transfer input gear 10b is engaged with the first input shaft output gear 11, the output shaft 40 is idly sleeved on the output shaft 40 and is an output shaft first input gear 41 selectively linked with the output shaft 40, and the output shaft first input gear 41 is engaged with the second transfer output gear 10 c.
The second intermediate rotation mechanism is configured as a second intermediate rotation shaft 10a, and a second intermediate input gear 10b and a second intermediate output gear 10c are provided, and 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 second transfer shaft 10a and the intermediate shaft 30 are arranged in a parallel offset mode, mutual interference between the second transfer shaft 10a and the intermediate shaft 30 can be avoided, a complex sleeve shaft structure is avoided, the layout is more reasonable, the reliability of a transmission system is improved, and the production and maintenance cost is reduced.
According to some embodiments of the present invention, as shown in fig. 1, a second gear shifting device k2 is provided on the output shaft 40, the second gear shifting device k2 selectively engaging 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 shift device k2 engages the output shaft 40 with the first input shaft 10, it is possible to realize that the engine 1 is directly driven in the fourth gear independently or linked in parallel with the first motor generator 2 and/or the second motor generator 3. The second gear shift device k2 engaging the output shaft first input gear 41 with the output shaft 40 can realize the first transmission path to realize the second gear transmission of the power transmission system, and the engine 1 can be directly driven at the second gear independently or linked in parallel with the first motor generator 2 and/or the second motor generator 3. According to some embodiments of the present invention, as shown in fig. 1, the countershaft 30 is provided with a plurality of countershaft output gears 32, which may be a first countershaft output gear 32a and a second countershaft output gear 32 b; a plurality of output shaft second input gears 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 one embodiment of the present invention, as shown in fig. 1, the powertrain further includes a third shifter k3 provided to the output shaft 40 and selectively engaging one of the plurality of output shaft second input gears with the output shaft 40, and a third shifter k 3.
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 system can be shifted between the countershafts 30 and the output shaft 40 in different gears.
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 some embodiments 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, the clutch 4 selectively engaging 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 vehicle is shifted, power interruption can be avoided, power switching 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 shifting device k1, the second shifting device k2 and the third shifting device k3 are all in the neutral state.
When the vehicle is in pure electric drive mode, on-vehicle power battery electric quantity is sufficient, and first motor generator 2 and second motor generator 3 provide pure electric drive for the vehicle, and first motor generator 2 and second motor generator 3 can keep off the position drive or neutral gear in four, and when the vehicle shifted gears, a motor kept the current fender position, and another motor can smoothly be switched to other fender positions to realize unpowered interruption and shift gears. When the clutch 4 is open, 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 the first gear or the third gear. At this time, the clutch 4 is closed, 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 intermediate rotation mechanism by the second input shaft 20, the first intermediate rotation 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 third 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 positioned on a first duplicate gear 20a which is a first intermediate rotation mechanism, 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 input gear 31 on an 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 an output shaft 40 one by one, so as to output power to the output shaft 40, and delivers power to the vehicle for driving.
As shown in fig. 1, the power transmission system of the present application employs three different transmission paths for power-interruption-free shifting between four gears, and during gear shifting, the power source that supplies drive to the output shaft 40 is also switched among 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 shifting device k1 engages the first input shaft 10 with the first duplicate gear 20a, the second shifting device k2 is in neutral, and the third shifting device k3 engages the output shaft 40 with the output shaft second input gear 42. The engine 1 or the first motor generator 2 and/or the second motor generator 3 is used as a power source, power is transmitted from the first input shaft 10 and/or the second input shaft 20 to the intermediate shaft 30 through the first duplicate output gear 20c, and the intermediate shaft 30 transmits power from the second output shaft second input gear 42b to the output shaft 40.
When the vehicle is in the second-gear direct-drive or parallel hybrid engine mode, 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 output shaft first input gear 41, and the third gear shifting device k3 is in neutral; 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 output shaft first input gear 41, and the third shifting device k3 engages or is in neutral the output shaft 40 with the first output shaft second input gear 42a or the second output shaft second input gear 42 b. The engine 1 is independently in the second 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, the second gear or the third gear in parallel linkage to provide forward gear driving or neutral gear stop. The power of the power source is transmitted from the first input shaft 10 and/or the second input shaft 20 to the second intermediate rotating shaft 10a through the first input shaft output gear 11, and the second intermediate rotating shaft 10a transmits the power from the second intermediate output gear 10c to the output shaft 40.
When the vehicle is in the third 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 twin 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 third 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 duplicate 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 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 engages the output shaft 40 with the first input shaft output gear 11, and the third gear shifting device k3 is in neutral; 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 output gear 11, and the third shifting device k3 engages or is in neutral the output shaft 40 with the first output shaft second input gear 42a or the second output shaft second input gear 42 b. The engine 1 is independently driven directly or linked in parallel with the first motor generator 2 in the fourth gear, or the second motor generator 3 is jointly linked in parallel in the first gear, the third gear or the fourth gear to provide forward gear driving or neutral gear stop. The power of the engine 1 and/or the first motor generator 2 is directly transmitted to the output shaft 40 from the first input shaft 10.
According to the embodiment of the present invention, as shown in fig. 1 to 6, the first motor generator 2 and the second motor generator 3 are respectively arranged offset from the engine output shaft 70 through the first reduction gear mechanism, so that the torque requirements of the first motor generator 2 and the second motor generator 3 can be reduced, the oil seal arrangement of the first motor generator 2 and the second motor generator 3 can be simplified, the oil seal arrangement of the first motor generator 2, the second motor generator 3 and the engine 1 can be simpler, the lubrication sealing effect is better, the engine 1 can be arranged coaxially with the first input shaft 10, and the first motor generator 2 can be linked with the first input shaft 10 through the first reduction gear mechanism.
The engine 1 or the first motor generator 2 and the second motor generator 3 are arranged coaxially, the clutch 4 is provided between the engine output shaft 70 of the engine 1 and the first motor generator 2, and the first input shaft 10 is connected to 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 power train can be more compact.
According to an embodiment of the present invention, as shown in fig. 3, a structure of one intermediate shaft 30 may be adopted, the second intermediate shaft 10a of the second intermediate mechanism is disposed parallel to and non-coaxially with the intermediate shaft 30 on the other side in the circumferential direction of the first input shaft 10 and the output shaft 40, the second intermediate input gear 10b and the second intermediate output gear 10c are fixedly disposed on the second intermediate shaft 10a and respectively engaged with the first input shaft output gear 11 and the output shaft first input gear 41, and the first input shaft and the second intermediate mechanism are linked. The second transfer mechanism is independent of the intermediate shaft 30 and is not interfered with each other, so that the production and manufacturing process of the shaft tooth mechanism of the transmission system can be simplified, and the cost of the system is reduced. The transmission system with the single-intermediate-shaft structure is simplified in structure, the bearing capacity of the transmission system is weaker than that of a power transmission system with a multi-intermediate-shaft structure, and the transmission system is suitable for light vehicles with smaller traction requirements.
According to an embodiment of the present invention, as shown in fig. 5, on the basis of the embodiment of the power transmission system based on the single-countershaft structure of fig. 3, 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 three other embodiments of the present invention, the power transmission system further includes a sub-transmission, as shown in fig. 2, 4 and 6, and the output shaft 40 is linked with the sub-transmission based on the power transmission system of the structure shown in fig. 1, 3 and 5. The sub-transmission has a third input shaft 40a, a sub-transmission output shaft 60 and a sub-transmission intermediate shaft 50, the third input shaft 40a is connected with 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 meshed 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 provided with a sub-transmission output shaft input gear 62 meshed with the sub-transmission intermediate shaft output gear 50b in an empty sleeve manner, the sub-transmission is provided with a sub-transmission gear shift mechanism k4, and the sub-transmission gear shift mechanism k4 selectively connects the third input shaft 40a with the sub-transmission output shaft 60 or connects the sub-transmission output shaft 60 with the sub-transmission output shaft input gear 62. Through setting up auxiliary transmission, can carry out the twice to the fender position of main transmission case and enlarge, further richened power transmission system's fender position, can be adapted to the higher heavy vehicle of load demand.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean 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 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 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;
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 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 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;
an intermediate shaft input gear is arranged on the intermediate shaft, and a first duplicate output gear meshed with the intermediate shaft input gear is arranged on the first duplicate gear.
3. The drivetrain of claim 2, further comprising:
a first shifting device disposed on the first input shaft and selectively engaging the first input shaft with the first duplicate gear.
4. The powertrain system according to claim 3, wherein the second relay mechanism is configured as one or more second intermediate shafts, a second intermediate input gear, and a second intermediate output gear, wherein the second intermediate shafts are disposed offset in parallel with the intermediate shaft in the circumferential direction of the first input shaft, and the second intermediate input gear and the second intermediate output gear are fixedly disposed on the second intermediate shafts; wherein
A first input shaft output gear is arranged on the first input shaft, and the second transfer input gear is meshed with the first input shaft output gear;
and a first output shaft input gear which can be selectively connected with the output shaft is sleeved on the output shaft, and the first output shaft input gear is meshed with the second transfer output gear.
5. The powertrain system of claim 3, wherein the output shaft has a second shifting device disposed thereon that selectively engages the output shaft with the first input shaft or the output shaft with the output shaft first input gear.
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 the power transmission system according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111161869.0A CN113879103A (en) | 2021-09-30 | 2021-09-30 | Power transmission system and vehicle with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111161869.0A CN113879103A (en) | 2021-09-30 | 2021-09-30 | Power transmission system and vehicle with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113879103A true CN113879103A (en) | 2022-01-04 |
Family
ID=79004918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111161869.0A Pending CN113879103A (en) | 2021-09-30 | 2021-09-30 | Power transmission system and vehicle with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113879103A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113978232A (en) * | 2021-09-30 | 2022-01-28 | 如果科技有限公司 | Power transmission system and vehicle with same |
| CN115352267A (en) * | 2022-07-28 | 2022-11-18 | 湖南行必达网联科技有限公司 | Hybrid power transmission system with middle rotating shaft and working machine |
| 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 |
| 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 |
| CN115465082A (en) * | 2022-07-28 | 2022-12-13 | 湖南行必达网联科技有限公司 | Double-motor hybrid gearbox with middle rotating shaft and operation machine |
| WO2023134222A1 (en) * | 2022-01-12 | 2023-07-20 | 如果科技有限公司 | Power transmission system and vehicle |
| WO2024001247A1 (en) * | 2022-06-28 | 2024-01-04 | 湖南行必达网联科技有限公司 | Electric-drive gearbox with two electric motors and uninterrupted power during gear shifting, and vehicle |
-
2021
- 2021-09-30 CN CN202111161869.0A patent/CN113879103A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113978232A (en) * | 2021-09-30 | 2022-01-28 | 如果科技有限公司 | Power transmission system and vehicle with same |
| WO2023051513A1 (en) * | 2021-09-30 | 2023-04-06 | 如果科技有限公司 | Power transmission system and vehicle |
| WO2023134222A1 (en) * | 2022-01-12 | 2023-07-20 | 如果科技有限公司 | Power transmission system and vehicle |
| WO2024001247A1 (en) * | 2022-06-28 | 2024-01-04 | 湖南行必达网联科技有限公司 | Electric-drive gearbox with two electric motors and uninterrupted power during gear shifting, and vehicle |
| CN115352267A (en) * | 2022-07-28 | 2022-11-18 | 湖南行必达网联科技有限公司 | Hybrid power transmission system with middle rotating shaft and working machine |
| 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 |
| 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 |
| CN115465082A (en) * | 2022-07-28 | 2022-12-13 | 湖南行必达网联科技有限公司 | Double-motor hybrid gearbox with middle rotating shaft and operation machine |
| CN115352267B (en) * | 2022-07-28 | 2024-02-27 | 湖南行必达网联科技有限公司 | Hybrid power transmission system with middle rotating shaft and working machine |
| CN115465082B (en) * | 2022-07-28 | 2024-02-27 | 湖南行必达网联科技有限公司 | Dual-motor hybrid gearbox with middle rotating shaft and working machine |
| WO2024045548A1 (en) * | 2022-07-28 | 2024-03-07 | 湖南行必达网联科技有限公司 | Double-motor hybrid gearbox having transfer shaft, and heavy equipment |
| WO2024045547A1 (en) * | 2022-07-28 | 2024-03-07 | 湖南行必达网联科技有限公司 | Dual-motor hybrid powertrain and working machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113879103A (en) | Power transmission system and vehicle with same | |
| CN113879104B (en) | Power transmission system and vehicle with same | |
| CN113978232A (en) | Power transmission system and vehicle with same | |
| CN113942382B (en) | Power transmission system for vehicle and vehicle | |
| CN111976464B (en) | Hybrid vehicle driving system utilizing motor for speed regulation during gear shifting | |
| CN217022174U (en) | Power transmission system for vehicle and vehicle | |
| CN103448528A (en) | Hybrid power coupling device | |
| CN101450609A (en) | Hybrid drive system and method | |
| CN216580096U (en) | Power transmission system and vehicle with same | |
| CN101417606A (en) | Mixed power driving system and operation method thereof | |
| CN105857053A (en) | Hybrid power system and hybrid power automobile | |
| CN108001186B (en) | Power transmission system and vehicle with same | |
| CN110962577A (en) | Hybrid power gearbox and hybrid power variable speed transmission system | |
| CN216783253U (en) | Power transmission system and vehicle | |
| CN106864243B (en) | Seven speed dual clutch hybrid transmissions | |
| CN203805687U (en) | Multi-gear driving device for hybrid power vehicle | |
| CN108016277B (en) | Power transmission system and vehicle with same | |
| CN216374155U (en) | Power transmission system and vehicle with same | |
| CN110145571A (en) | Power failure-free hybrid gearbox | |
| CN113978234A (en) | Hybrid power system and vehicle | |
| CN216331396U (en) | Power transmission system and vehicle with same | |
| CN114043866A (en) | Power transmission system and vehicle with same | |
| CN113147354B (en) | Hybrid power system | |
| CN115503459A (en) | Multi-gear variable speed hybrid power system with double motors and double middle shafts with power take-off modules | |
| CN205534050U (en) | Hybrid power transmission |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |