WO2023010714A1 - 双电机多档位混合动力传动***和车辆 - Google Patents
双电机多档位混合动力传动***和车辆 Download PDFInfo
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- WO2023010714A1 WO2023010714A1 PCT/CN2021/132140 CN2021132140W WO2023010714A1 WO 2023010714 A1 WO2023010714 A1 WO 2023010714A1 CN 2021132140 W CN2021132140 W CN 2021132140W WO 2023010714 A1 WO2023010714 A1 WO 2023010714A1
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- motor
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- engine
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- B60K6/26—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the motors or the generators
- B60K2006/266—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the motors or the generators with two coaxial motors or generators
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- 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
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- 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
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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
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- 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
Definitions
- the present application relates to the technical field of vehicles, in particular to a dual-motor multi-speed hybrid power transmission system and a vehicle.
- Hybrid means that the vehicle uses gasoline drive and electric drive.
- the key is the hybrid system.
- the performance of the hybrid system is directly related to the performance of the hybrid vehicle.
- the commonly used hybrid system often adopts a fixed speed ratio, but the fixed speed ratio prevents the engine from working at the best economic point, and the power transmission performance is limited.
- the main purpose of this application is to provide a dual-motor multi-gear hybrid power transmission system, which aims to solve the fixed speed ratio problem of the hybrid power system and improve power transmission performance.
- the dual-motor multi-gear hybrid power transmission system proposed by the present application includes an engine, a first motor, a second motor, a first clutch, a second clutch, a first planetary row, a second planetary row, a first an input shaft, a second input shaft, a third input shaft and a brake assembly;
- the first input shaft is connected to the engine through the first clutch
- the second input shaft is connected to the engine through the second clutch, and the second input shaft is sleeved outside the first input shaft;
- the first motor is connected to the engine
- the second motor is connected to the first planetary row through the third input shaft;
- the braking assembly is configured to brake the first planetary row and/or the second planetary row.
- the first planetary row includes a first sun gear, a first planetary carrier, a first planetary gear and a first ring gear
- the second planetary row includes a second sun gear, a second planetary carrier, The second planetary gear and the second ring gear, the first planet carrier is connected with the second ring gear, and the second planet carrier is connected with the first ring gear.
- the brake assembly includes a first brake connected to the second planet carrier.
- the brake assembly includes a second brake connected to the second sun gear.
- the dual-motor multi-gear hybrid power transmission system further includes a first intermediate shaft, the first intermediate shaft is loosely sleeved outside the first input shaft, and the second brake passes through the The first intermediate shaft is connected with the second sun gear.
- the dual-motor multi-gear hybrid power transmission system further includes a second countershaft connected to the second ring gear and configured to output power.
- the dual-motor multi-speed hybrid transmission system further includes a differential, and the differential is connected to the second intermediate shaft.
- the dual-motor multi-gear hybrid power transmission system further includes a torsional damper, and the torsional damper is arranged between the engine and the first generator.
- both the first motor and the second motor are connected to a power storage battery, and the dual-motor multi-gear hybrid power transmission system has any one or more of the following working modes:
- the second motor works as a driving motor using the electric energy of the power storage battery, the engine does not work, and the first motor does not work;
- the second motor works as a drive motor using the electric energy of the power storage battery, and the engine drives the first motor as a generator to supply power to the second motor or to supply power to the Charging the traction battery;
- Parallel mode the engine runs at the set economical operating point, the second motor performs power output or charges the power battery according to the current power demand or the power demand of the power battery, and the first motor does not work ;
- the second motor works as a driving motor using the electric energy of the power storage battery
- the engine works, and at the same time, the engine drives the first motor as a generator to generate electricity for the second motor;
- the second motor works as a driving motor using the electric energy of the power storage battery, the engine works, and at the same time, the first motor works as a driving motor using the electric energy of the power storage battery.
- the present application also proposes a vehicle, including the dual-motor multi-speed hybrid power transmission system.
- a technical solution of the present application uses a double clutch to connect two input shafts sleeved together, wherein the first clutch is connected to the engine through the first input shaft, and the second clutch is connected to the engine through the second input shaft, thereby realizing the Transmission of power on two input shafts, and then transmission to the first planetary row and/or the second planetary row.
- the connection between the second motor and the first planetary row realizes the transmission of the power of the second motor to the first planetary row.
- the transmission of power in the first planetary row and/or the second planetary row is controlled by the brake assembly, and at the same time the engine is connected to the first motor to transmit the engine power to the first motor, thereby realizing pure electric mode, series mode, and parallel mode and power split mode and other drive modes.
- the problem of fixed speed ratio is solved.
- the speed ratio of the dual-motor multi-gear hybrid power transmission system can be flexibly adjusted, which satisfies the optimization of economy without reducing the performance, and makes the engine work at the optimal working point. On the one hand, it improves It improves the power transmission performance; on the other hand, it makes the engine work more economically and improves the transmission efficiency.
- both the first motor and the second motor have driving capabilities.
- the performance of the first motor is improved to reduce the cost; on the other hand, in the dual-motor driving mode, the motor can The flexible access to the series provides energy for the dual motors, making the driving power of the vehicle stronger.
- FIG. 1 is a schematic structural view of Embodiment 1 of a dual-motor multi-gear hybrid power transmission system of the present application;
- FIG. 2 is a schematic structural diagram of Embodiment 2 of the dual-motor multi-gear hybrid power transmission system of the present application
- Fig. 3 is a power path diagram of the pure electric first gear of the dual-motor multi-gear hybrid power transmission system in Fig. 1;
- Fig. 4 is a power path diagram of the pure electric second gear of the dual-motor multi-gear hybrid power transmission system in Fig. 1;
- Fig. 5 is a power path diagram when the dual-motor multi-gear hybrid power transmission system in Fig. 1 is connected in series for one gear;
- Fig. 6 is a power path diagram when the dual-motor multi-gear hybrid power transmission system is in series with the second gear in Fig. 1;
- Fig. 7 is a power path diagram when the dual-motor multi-gear hybrid power transmission system in Fig. 1 is connected in parallel to one gear;
- Fig. 8 is a power path diagram when the dual-motor multi-gear hybrid power transmission system is connected in parallel to the second gear in Fig. 1;
- Fig. 9 is a power path diagram when the dual-motor multi-gear hybrid power transmission system in Fig. 1 is connected in parallel to the third gear;
- Fig. 10 is a power path diagram when the dual-motor multi-gear hybrid power transmission system in Fig. 1 is connected in parallel with fourth gear;
- FIG. 11 is a power path diagram of the power split mode of the dual-motor multi-gear hybrid power transmission system in FIG. 1 .
- label name label name 11 engine 50 Differential 12 first motor 60 first planet row 13 second motor 61 first sun wheel twenty one first clutch 62 first planetary carrier twenty two second clutch 63 first planetary wheel 31 first input shaft 64 first ring gear 32 second input shaft 70 second planet row 33 third input shaft 71 second sun gear 34 first intermediate shaft 72 second planet carrier 35 second intermediate shaft 73 second planetary wheel 41 first brake 74 second ring gear 42 second brake the the
- hybrid vehicles have gradually become the mainstream of vehicle development due to their high practicability, environmental protection and other advantages.
- the commonly used hybrid system often adopts a fixed speed ratio, but the fixed speed ratio prevents the engine from working at the best economic point, and the power transmission performance is limited.
- the present application proposes a dual-motor multi-speed hybrid power transmission system.
- the dual-motor multi-speed hybrid transmission system includes an engine 11, a first motor 12, a second motor 13, a first clutch 21, a second clutch 22, a first planetary row 60.
- the first input shaft 31 is connected to the engine 11 through the first clutch 21
- the second input shaft 32 is connected to the engine 11 through the second clutch 22
- the second input shaft 32 is sleeved outside the first input shaft 31 .
- the first input shaft 31 is fixedly connected to the driven disc of the first clutch 21
- the driving disc of the first clutch 21 is connected to the flywheel of the engine 11
- the combination of the first clutch 21 and the engine 11 can realize the power of the engine 11 at
- the transmission on the first input shaft 31 and the separation of the first clutch 21 from the engine 11 can realize the interruption of the power of the engine 11 on the first input shaft 31 .
- the second input shaft 32 is fixedly connected with the driven disc of the second clutch 22, the driving disc of the second clutch 22 is connected with the flywheel of the engine 11, and the combination of the second clutch 22 and the engine 11 can realize the power of the engine 11 in the second input
- the transmission on the shaft 32 and the separation of the second clutch 22 from the engine 11 can realize the interruption of the power of the engine 11 on the second input shaft 32 .
- the first input shaft 31 and the second input shaft 32 are arranged coaxially, the first input shaft 31 is a solid shaft, the second input shaft 32 is a hollow shaft, and the second input shaft 32 is sleeved outside the first input shaft 31, The two can rotate relative to each other.
- the first clutch 21 and the second clutch 22 are DCT dual clutches, specifically, they can be dry DCT dual clutches or wet DCT dual clutches; of course, the first clutch 21 and the second clutch 22 can also be two single clutches, specifically Can be dog clutch or dry clutch.
- the first motor 12 is connected to the engine 11 , specifically, the rotor shaft of the first motor 12 is splined to the output shaft of the flywheel of the engine 11 , and is configured to transmit the power of the engine 11 to the first motor 12 .
- the first motor 12 can be used as a generator to generate electricity, and can also realize the driving function of a driving motor.
- the second motor 13 is connected with the first planetary row 60 through the third input shaft 33. Specifically, the second motor 13 can be used as a driving motor to realize the driving function, so that the driving power of the second motor 13 is transmitted through the third input shaft 33. To the first planet row 60.
- a speed ratio gear can also be added between the first electric motor 12 and the engine 11 to generate a speed step ratio to provide more gears for the dual-motor multi-gear hybrid power transmission system, so that the engine 11 There are more options when selecting and matching with the first motor 12 .
- Both the first motor 12 and the second motor 13 have driving capability. Under the premise of reducing the performance of the second motor 13, the performance of the first motor 12 is improved, so that the overall cost of driving is reduced, and the driving mode of the dual motors makes the engine 11 It can flexibly enter the driving work to provide energy for the dual motors.
- the brake assembly is configured to brake the first planetary row 60 and/or the second planetary row 70, specifically, the brake assembly is connected with the first planetary row 60 and/or the second planetary row 70, when the brake assembly When connected with the first planetary row 60 and/or the second planetary row 70, the transmission of power in the first planetary row 60 and/or the second planetary row 70 can be realized; when the brake assembly is connected with the first planetary row 60 and/or Or when the second planetary row 70 is separated, the transmission of power in the first planetary row 60 and/or the second planetary row 70 can be interrupted.
- a technical solution of the present application adopts a double clutch to connect two input shafts sleeved together, wherein the first clutch 21 is connected to the engine 11 through the first input shaft 31 , and the second clutch 22 is connected to the engine 11 through the second input shaft 32
- the connection realizes the transmission of the power of the engine 11 on the two input shafts, and then the transmission to the first planetary row 60 and/or the second planetary row 70 .
- the connection of the second motor 13 and the first planetary row 60 realizes the transmission of the power of the second motor 13 to the first planetary row 60.
- the transmission of power in the first planetary row 60 and/or the second planetary row 70 is controlled by the brake assembly, and at the same time the engine 11 is connected to the first motor 12 to transmit the power of the engine 11 to the first motor 12, thereby realizing pure electric power transmission.
- Mode, series mode, parallel mode and power split mode and other driving modes Compared with the existing hybrid power transmission system, the problem of fixed speed ratio is solved.
- the speed ratio of the dual-motor multi-gear hybrid power transmission system can be flexibly adjusted, which satisfies the optimization of economy without reducing the performance, and makes the engine 11 work at the optimal working point.
- the power transmission performance is improved; on the other hand, the engine 11 is made to work more economically, and the transmission efficiency is improved.
- both the first motor 12 and the second motor 13 have driving capabilities.
- the performance of the first motor 12 is improved to reduce the cost; on the other hand, the dual-motor drive mode
- the engine 11 can be flexibly connected in series to provide energy for the dual motors, so that the driving power of the vehicle is stronger.
- the first planetary row 60 includes the first sun gear 61 , the first planetary carrier 62 , the first planetary gear 63 and the first ring gear 64
- the second planetary row 70 includes the second sun gear 71 , the second planet carrier 72 , the second planetary gear 73 and the second ring gear 74 .
- the first sun gear 61 is connected to the second motor 13 through the third input shaft 33
- the first planet carrier 62 is connected to the second ring gear 74
- the first planet gear 63 is fixed on the first planet carrier 62
- the first The ring gear 64 is connected to the second carrier 72 .
- the connection between the first planetary row 60 and the second planetary row 70 realizes the transmission of power between the first planetary row 60 and the second planetary row 70 .
- Both the second sun gear 71 and the second planetary carrier 72 are connected with the brake assembly, and the connection between the second planetary row 70 and the brake assembly realizes the control of the power transmission of the second planetary row 70 by the brake assembly, and further realizes the brake assembly.
- the control of the moving assembly on the power transmission of the first planetary row 60.
- the control of the brake assembly on the power transmission in the first planetary row 60 and/or the second planetary row 70 can realize a multi-gear driving mode, adapt to more actual working conditions, and make the dual-motor multi-gear hybrid power transmission The scope of application of the system is wider.
- the brake assembly includes a first brake 41 connected to the second planet carrier 72 .
- the first brake 41 is spline-connected to the second input shaft 32 through its friction plate
- the steel plate of the first brake 41 is spline-connected to the transmission housing
- the rotating part of the first brake 41 is connected to the second planet carrier. 72 connections.
- the brake assembly also includes a second brake 42 connected to the second sun gear 71 .
- the steel plate of the second brake 42 is splined to the transmission housing.
- the dual-motor multi-gear hybrid power transmission system also includes a first intermediate shaft 34, which is loosely sleeved on the first input shaft 31.
- the second brake 42 is connected to the second sun gear 71 via the first intermediate shaft 34 . In this way, by controlling the combination or separation of the second brake 42 and the second sun gear 71 , the control of power transmission or interruption in the second planetary row 70 is realized.
- the dual-motor multi-speed hybrid transmission system further includes a second countershaft 35 connected to the second ring gear 74 and configured to output power.
- the dual-motor multi-speed hybrid transmission system further includes a differential 50 connected to the second intermediate shaft 35 . In this way, after the power of the engine 11 and/or the first motor 12 and/or the second motor 13 is transmitted through the input shaft and the planetary row, it is transmitted to the second intermediate shaft 35 through the second ring gear 74, and then transmitted to the differential 50, and then transmitted to the axle shaft through the differential 50, and finally output to the wheels to realize the drive of the vehicle.
- the dual-motor multi-gear hybrid power transmission system further includes a torsional vibration damper (not shown), and the torsional vibration damper is arranged between the engine 11 and the first generator.
- the torsional shock absorber can reduce the torsional rigidity of the connecting part of the crankshaft of the engine 11 and the transmission system, thereby reducing the natural frequency of the torsional vibration of the transmission system; increase the torsional damping of the transmission system, suppress the corresponding amplitude of torsional resonance, and attenuate the transient torsional vibration caused by impact ; Control the torsional vibration of the clutch and transmission shafting when the power transmission assembly is idling, eliminate the idling noise of the transmission and the torsional vibration and noise of the final drive and transmission; it can also ease the torsional impact load of the drive train under unstable conditions, and improve the clutch smoothness of engagement.
- Both the first motor 12 and the second motor 13 are connected to a power storage battery (not shown), and the dual-motor multi-gear hybrid power transmission system has any one or more of the following operating modes:
- the second motor 13 works as a driving motor using the electric energy of the power storage battery, the engine 11 does not work, and the first motor 12 does not work.
- the second motor 13 works as a drive motor using the electric energy of the power battery, and the engine 11 drives the first motor 12 as a generator to supply power to the second motor 13 or charge the power battery under a set working condition.
- the set operating condition may be a situation where the power of the traction battery is insufficient.
- the engine 11 runs at the set economical operating point
- the second motor 13 performs power output or charges the power battery according to the current power demand or the demand of the power storage battery, and the first motor 12 does not work.
- the engine 11 runs at the set economical operating point, which specifically means that the engine 11 is driven at an operating point with low fuel consumption, and the fuel consumption can be determined according to the engine fuel consumption map.
- the second motor 13 works as a drive motor using the electric energy of the power storage battery, the engine 11 works, and the engine 11 drives the first motor 12 as a generator to generate electricity for the second motor 13 to use; or
- the second motor 13 works as a driving motor using the electric energy of the power storage battery, and the engine 11 works, while the first motor 12 works as a driving motor using the electric energy of the power storage battery.
- the dual-motor multi-gear hybrid power transmission system can realize multi-gear operation in pure electric mode, series mode, parallel mode and power split mode.
- pure electric first gear and pure electric second gear first gear in series, second gear in series, first gear in parallel, second gear in parallel, third gear in parallel, fourth gear in parallel, and power split mode, a total of nine gears will be described as examples.
- Figure 3 to Figure 11 correspond to pure electric first gear, pure electric second gear, first gear in series, second gear in series, first gear in parallel, second gear in parallel, third gear in parallel, fourth gear in parallel, and in power split mode, more
- the power path of the gear hybrid power transmission system, the bold line in each figure is the power path.
- the second gear when the second gear is pure electric, the second brake 42 is combined, the second sun gear 71 is fixed, and the second motor 13 drives the first sun gear 61, through the first planetary gear 63, the first The planetary carrier 62 transmits part of the power to the second ring gear 74; the other part of the power is transmitted from the first planetary carrier 62 to the first ring gear 64, and then transmitted to the second planetary carrier 72, the second gear ring 74 ; the second ring gear 74 then transmits the power to the second intermediate shaft 35 , and then to the differential 50 .
- the second brake 42 when the second gear is connected in series, the second brake 42 is combined, the second sun gear 71 is fixed, the second motor 13 drives the first sun gear 61, through the first planetary gear 63, the first planetary gear
- the carrier 62 transmits a part of the power to the second ring gear 74; the other part of the power is transmitted from the first planet carrier 62 to the first ring gear 64, and then from the first ring gear 64 to the second planet carrier 72, the second ring gear 74; the second ring gear 74 transmits the power to the second intermediate shaft 35, and then to the differential 50;
- the engine 11 works to drive the first motor 12 as a generator to generate electricity, and charge the power storage battery.
- the first clutch 21 is combined, and the engine 11 transmits power to the first input shaft 31 through the first clutch 21, and then to the first sun gear 61.
- the first sun gear 61 passes through the first planetary gear 63 and the first planet carrier 62 , the power is transmitted to the second ring gear 74 , and the second ring gear 74 transmits the power to the second intermediate shaft 35 and then to the differential 50 .
- the second gear is connected in parallel, the second brake 42 is combined, the second sun gear 71 is fixed, the second motor 13 drives the first sun gear 61, and the first sun gear 61 passes through the first planetary gear 63.
- the first planetary carrier 62 transmits part of the power to the second ring gear 74; the other part of the power is transmitted from the first planetary carrier 62 to the first ring gear 64, and then from the first ring gear 64 to the second planetary carrier 72 , the second ring gear 74; the second ring gear 74 then transmits the power to the second intermediate shaft 35, and then to the differential 50;
- the first clutch 21 is combined, and the engine 11 transmits power to the first input shaft 31 through the first clutch 21, and then to the first sun gear 61, and the first sun gear 61 passes through the first planetary gear 63, the first planetary gear
- the frame 62 transmits a part of the power to the second ring gear 74; the other part of the power is transmitted from the first planet carrier 62 to the first ring gear 64, and then from the first ring gear 64 to the second planet carrier 72, the second ring gear 74 ; the second ring gear 74 then transmits the power to the second intermediate shaft 35 , and then to the differential 50 .
- the third gear is connected in parallel, the first brake 41 is separated, the second brake 42 is separated, the second motor 13 drives the first sun gear 61, and the first sun gear 61 passes through the first planetary gear 63,
- the first planet carrier 62 transmits a part of the power to the second ring gear 74; the other part of the power is transmitted from the first planet carrier 62 to the first ring gear 64, and then transmitted to the second planet carrier 72,
- the second ring gear 74; the second ring gear 74 then transmits the power to the second intermediate shaft 35, and then to the differential 50;
- the first clutch 21 is combined, and the engine 11 transmits power to the first input shaft 31 through the first clutch 21, and then to the first sun gear 61, and the first sun gear 61 passes through the first planetary gear 63, the first planetary gear
- the frame 62 transmits a part of the power to the second ring gear 74; the other part of the power is transmitted from the first planet carrier 62 to the first ring gear 64, and then from the first ring gear 64 to the second planet carrier 72, the second ring gear 74; the second ring gear 74 then transmits the power to the second intermediate shaft 35, and then to the differential 50;
- the second clutch 22 is combined, and the engine 11 transmits power to the second input shaft 32 through the second clutch 22, and then to the second planet carrier 72 and the second ring gear 74, and the second ring gear 74 then transmits the power to The second intermediate shaft 35 is then transmitted to the differential 50 .
- the fourth gear is connected in parallel, the second brake 42 is combined, the second sun gear 71 is fixed, the second motor 13 drives the first sun gear 61, and the first sun gear 61 passes through the first planetary gear 63.
- the first planetary carrier 62 transmits part of the power to the second ring gear 74; the other part of the power is transmitted from the first planetary carrier 62 to the first ring gear 64, and then from the first ring gear 64 to the second planetary carrier 72 , the second ring gear 74; the second ring gear 74 then transmits the power to the second intermediate shaft 35, and then to the differential 50;
- the second clutch 22 is combined, and a part of the power of the engine 11 is transmitted to the second input shaft 32 through the second clutch 22, and then transmitted to the second planetary carrier 72 and the second ring gear 74, and the second ring gear 74 then transmits the power to the second input shaft 32.
- the power is transmitted to the second intermediate shaft 35, and then to the differential 50;
- the first brake 41 is disengaged
- the second brake 42 is disengaged
- the second motor 13 drives the first sun gear 61
- the first sun gear 61 passes through the first planetary gear 63
- the first planet carrier 62 transmits a part of the power to the second ring gear 74; the other part of the power is transmitted from the first planet carrier 62 to the first ring gear 64, and then transmitted to the second planet carrier 72,
- the second ring gear 74; the second ring gear 74 then transmits the power to the second intermediate shaft 35, and then to the differential 50;
- the second clutch 22 is combined, and a part of the power of the engine 11 is transmitted to the second input shaft 32 through the second clutch 22, and then transmitted to the second planetary carrier 72 and the second ring gear 74, and the second ring gear 74 then transmits the power to the second input shaft 32.
- the power is transmitted to the second intermediate shaft 35, and then to the differential 50;
- the first motor 12 can also be used as a driving motor to participate in driving.
- DCT gear shifting mode When switching gears, DCT gear shifting mode can be used, and gear shifting can also be realized through the regulation of the first motor 12 and/or the second motor 13.
- the operability is extremely high, and the decoupling operation of gear shifting is easier.
- both the first motor 12 and the second motor 13 can be used for energy recovery, specifically, both the first motor 12 and the second motor 13 can convert the kinetic energy of the vehicle sliding into electric energy and store it in power
- the storage battery is used for driving the first motor 12 and/or the second motor 13 .
- the above nine gears can adapt to various road conditions and meet the needs of different driving conditions.
- the road conditions for each gear are as follows:
- the pure electric first gear when the vehicle speed is in the range of 0-40km/h: when the output torque is small, the pure electric first gear can be used; when the SOC power is lower than the threshold, the series first gear can be used for charging driving; when the output is large torque, the parallel first gear can be used.
- the pure electric second gear when the vehicle speed is in the range of 40-60km/h: when the output torque is small, the pure electric second gear can be used; when the SOC power is lower than the threshold, the series second gear can be used for charging driving; when the output torque is large, the parallel second gear can be used.
- the power split mode can be used for driving; when the output torque is large, the parallel third gear can be used.
- the parallel fourth gear can be used when the vehicle speed is in the range of 120-160km/h; when the output torque is small, the parallel fourth gear can be used; when the SOC power is lower than the threshold, the power split mode can be used for driving; when the output torque is large, the parallel third gear or parallel fourth gear can be used.
- the power split mode can be used.
- Each gear can realize pure electric mode, series mode, parallel mode and power split mode at an appropriate vehicle speed, realizing the multi-gear full mode of the dual-motor multi-gear hybrid power transmission system, and meeting the needs of different driving states .
- gear positions and road conditions are not limited to the above-mentioned situation, and different gear allocation modes can be arranged for different road conditions according to fuel consumption and power, and the adaptive relationship between gear positions and road conditions is not limited here.
- the dual-motor multi-gear hybrid power transmission system can realize multi-gear operation in pure electric mode, series mode, parallel mode and power split mode.
- the first pure electric gear, the first gear in series, the first gear in parallel, the third gear in parallel, and the power split mode can be realized, totaling five gears.
- the difference from the first embodiment is that the second brake 42 is cancelled, and the second sun gear 71 is sleeved on the first input shaft 31 .
- the gears of pure electric second gear, serial second gear, parallel second gear and parallel fourth gear are reduced, and the power transmission paths of other gears remain unchanged.
- the present application also proposes a vehicle (not shown), which includes a dual-motor multi-gear hybrid power transmission system.
- a vehicle (not shown), which includes a dual-motor multi-gear hybrid power transmission system.
- the dual-motor multi-gear hybrid power transmission system refer to the above-mentioned embodiments. Since this vehicle adopts the above-mentioned All the technical solutions of all the embodiments at least have all the functions brought about by the technical solutions of the above embodiments, and will not be repeated here.
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Abstract
Description
标号 | 名称 | 标号 | 名称 |
11 | 发动机 | 50 | 差速器 |
12 | 第一电机 | 60 | 第一行星排 |
13 | 第二电机 | 61 | 第一太阳轮 |
21 | 第一离合器 | 62 | 第一行星架 |
22 | 第二离合器 | 63 | 第一行星轮 |
31 | 第一输入轴 | 64 | 第一齿圈 |
32 | 第二输入轴 | 70 | 第二行星排 |
33 | 第三输入轴 | 71 | 第二太阳轮 |
34 | 第一中间轴 | 72 | 第二行星架 |
35 | 第二中间轴 | 73 | 第二行星轮 |
41 | 第一制动器 | 74 | 第二齿圈 |
42 | 第二制动器 |
Claims (10)
- 一种双电机多档位混合动力传动***,包括发动机、第一电机、第二电机、第一离合器、第二离合器、第一行星排、第二行星排、第一输入轴、第二输入轴、第三输入轴以及制动组件;所述第一输入轴通过所述第一离合器与所述发动机连接;所述第二输入轴通过所述第二离合器与所述发动机连接,所述第二输入轴空套于所述第一输入轴之外;所述第一电机与所述发动机连接;所述第二电机通过所述第三输入轴与所述第一行星排连接;所述制动组件被配置为对所述第一行星排和/或所述第二行星排进行制动。
- 如权利要求1所述的双电机多档位混合动力传动***,其中,所述第一行星排包括第一太阳轮、第一行星架、第一行星轮及第一齿圈,所述第二行星排包括第二太阳轮、第二行星架、第二行星轮及第二齿圈,所述第一行星架与所述第二齿圈连接,所述第二行星架与所述第一齿圈连接。
- 如权利要求2所述的双电机多档位混合动力传动***,其中,所述制动组件包括第一制动器,所述第一制动器与所述第二行星架连接。
- 如权利要求2所述的双电机多档位混合动力传动***,其中,所述制动组件包括第二制动器,所述第二制动器与所述第二太阳轮连接。
- 如权利要求4所述的双电机多档位混合动力传动***,其中,所述双电机多档位混合动力传动***还包括第一中间轴,所述第一中间轴空套于所述第一输入轴之外,所述第二制动器通过所述第一中间轴与所述第二太阳轮连接。
- 如权利要求2所述的双电机多档位混合动力传动***,其中,所述双 电机多档位混合动力传动***还包括第二中间轴,所述第二中间轴与所述第二齿圈连接,被配置为进行动力的输出。
- 如权利要求6所述的双电机多档位混合动力传动***,其中,所述双电机多档位混合动力传动***还包括差速器,所述差速器与所述第二中间轴连接。
- 如权利要求1所述的双电机多档位混合动力传动***,其中,所述双电机多档位混合动力传动***还包括扭转减振器,所述扭转减振器设于所述发动机与所述第一发电机之间。
- 如权利要求1所述的双电机多档位混合动力传动***,其中,所述第一电机与所述第二电机均与动力蓄电池连接,所述双电机多档位混合动力传动***具有以下任一种或多种工作模式:纯电模式,所述第二电机作为驱动电机使用所述动力蓄电池的电能工作,所述发动机不工作,所述第一电机不工作;串联模式,所述第二电机作为驱动电机使用所述动力蓄电池的电能工作,所述发动机带动作为发电机的所述第一电机对所述第二电机供电或在设定工况下对所述动力蓄电池进行充电;并联模式,所述发动机在设定的经济工作点运行,所述第二电机根据当前动力需要或所述动力蓄电池电量的需要进行动力输出或对所述动力蓄电池充电,所述第一电机不工作;功率分流模式,所述第二电机作为驱动电机使用所述动力蓄电池的电能工作,所述发动机工作,同时所述发动机带动作为发电机的所述第一电机发电以供所述第二电机使用;或所述第二电机作为驱动电机使用所述动力蓄电池的电能工作,所述发动机工作,同时所述第一电机作为驱动电机使用所述动力蓄电池的电能工作。
- 一种车辆,其中,所述车辆包括如权利要求1至9任一项所述的双电机多档位混合动力传动***。
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EP21952577.1A EP4338996A1 (en) | 2021-08-05 | 2021-11-22 | Dual-electric-motor and multi-gear hybrid power transmission system and vehicle |
JP2023577482A JP2024522740A (ja) | 2021-08-05 | 2021-11-22 | ツインモータ多段ハイブリッドパワートレインシステムおよび車両 |
US18/536,665 US20240100932A1 (en) | 2021-08-05 | 2023-12-12 | Dual-motor multi-gear hybrid transmission system and vehicle |
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CN202110905044.9A CN113400923B (zh) | 2021-08-05 | 2021-08-05 | 双电机多档位混合动力传动***和车辆 |
CN202110905044.9 | 2021-08-05 |
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US18/536,665 Continuation US20240100932A1 (en) | 2021-08-05 | 2023-12-12 | Dual-motor multi-gear hybrid transmission system and vehicle |
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