CN111845316A - Hybrid power driving system and vehicle - Google Patents
Hybrid power driving system and vehicle Download PDFInfo
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- CN111845316A CN111845316A CN201910357711.7A CN201910357711A CN111845316A CN 111845316 A CN111845316 A CN 111845316A CN 201910357711 A CN201910357711 A CN 201910357711A CN 111845316 A CN111845316 A CN 111845316A
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- 238000004134 energy conservation Methods 0.000 description 2
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/36—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings
- B60K6/365—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings with the gears having orbital motion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/38—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the driveline clutches
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
- B60K6/54—Transmission for changing ratio
- B60K6/547—Transmission for changing ratio the transmission being a stepped gearing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/38—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the driveline clutches
- B60K2006/381—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the driveline clutches characterized by driveline brakes
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Structure Of Transmissions (AREA)
Abstract
A hybrid power driving system comprises an engine, an input shaft, a transmission shaft, a first motor, a planetary gear device, a clutch, a first braking device, an intermediate shaft, a second motor and a differential mechanism, wherein the planetary gear device comprises a first sun gear, a first planet carrier, a gear ring, a second sun gear and a second planet carrier, the gear ring is respectively meshed with the first planet gear and the second planet gear, the engine is connected with the input shaft, the first planet carrier is fixed on the input shaft, the first motor is connected with the first sun gear, and the second sun gear is fixed on the transmission shaft; the second planet carrier is connected with the intermediate shaft; the second motor is connected with the intermediate shaft; the intermediate shaft is connected with the differential; the clutch is used for combining or separating the second sun gear and the gear ring, the first braking device is connected with the transmission shaft, and the first braking device is used for braking or unlocking the second sun gear. The hybrid drive system of the present invention has multiple modes of operation. The invention also relates to a vehicle.
Description
Technical Field
The invention relates to the technical field of new energy, in particular to a hybrid power driving system and a vehicle.
Background
The development of environment-friendly and energy-saving automobiles has become the development direction of the automobile industry.
In energy-saving automobiles and new energy automobiles, the technical bottlenecks of long charging time and short driving mileage in winter of pure electric automobiles are not broken through yet; the cost of the hydrogen fuel cell vehicle is high, and the construction of the hydrogenation infrastructure needs time. The hybrid electric vehicle can realize energy conservation and emission reduction even by utilizing the existing energy charging facilities, and is a relatively practical and feasible solution at present, so that various large vehicle enterprises launch or develop respective hybrid electric vehicle models.
The hybrid vehicle type realizes energy conservation, needs to have multiple working modes and is switched to the working mode with the best economy according to the actual conditions such as vehicle speed and the torque demand of the whole vehicle. Therefore, in order to achieve energy saving, it is necessary to design a hybrid transmission having a plurality of operation modes.
Disclosure of Invention
In view of the above, the present invention provides a hybrid driving system, which has a simple and compact structure, is easy to arrange, and has multiple operation modes.
The utility model provides a hybrid power driving system, includes engine, input shaft, transmission shaft, first motor, planetary gear device, clutch, first arresting gear, jackshaft, second motor and differential mechanism, planetary gear device includes first sun gear, first planet carrier, ring gear, second sun gear and second planet carrier, is equipped with first planet wheel on the first planet carrier, is equipped with the second planet wheel on the second planet carrier, and the ring gear meshes with first planet wheel, second planet wheel respectively, wherein:
The engine is connected with the input shaft, the first planet carrier is fixed on the input shaft, the first motor is connected with the first sun gear, and the second sun gear is fixed on the transmission shaft;
the second planet carrier is connected with the intermediate shaft;
the second motor is connected with the intermediate shaft;
the intermediate shaft is connected with the differential;
the clutch is used for combining or separating the second sun gear and the gear ring, the first braking device is connected with the transmission shaft, and the first braking device is used for braking or unlocking the second sun gear.
In an embodiment of the present invention, the hybrid drive system further includes a second brake device, the second brake device is connected to the input shaft, and the second brake device is used for braking or unlocking the first carrier.
In an embodiment of the present invention, a first gear and a second gear are fixedly disposed on the intermediate shaft, a differential gear is disposed on the differential, the first gear and the second carrier are engaged with each other, and the second gear and the differential gear are engaged with each other.
In an embodiment of the present invention, the second motor has a second motor output shaft, and a third gear is fixed to the second motor output shaft, and the third gear is meshed with the first gear.
In an embodiment of the present invention, the first motor includes a first housing, a first motor stator, and a first motor rotor, the first motor stator is connected in the first housing, the first motor stator is disposed opposite to the first motor rotor, and the first motor rotor is fixed to the first carrier.
In an embodiment of the present invention, the hybrid drive system has a pure electric first gear mode and a pure electric second gear mode, in the pure electric first gear mode, the clutch is disengaged, the first braking device brakes the second sun gear, and the second sun gear is driven by the second motor; in the pure electric two-gear mode, the clutch is combined, the first braking device is separated, and the second motor drives the first braking device.
In an embodiment of the present invention, the hybrid drive system has a power-split hybrid first-gear mode in which the clutch is disengaged, the first brake device brakes the second sun gear, the engine drives the second sun gear, and the first motor and/or the second motor drives the second sun gear, and a power-split hybrid second-gear mode in which the first brake device brakes the second sun gear; in the power-split hybrid second-gear mode, the clutch is engaged, the first brake device unlocks the second sun gear, and the engine drives the first motor and/or the second motor.
In an embodiment of the present invention, the hybrid drive system has a pure electric first gear mode and a pure electric second gear mode, in the pure electric first gear mode, the clutch is disengaged, the first brake device brakes the second sun gear, the second brake device brakes the first carrier, and the first carrier is driven by the first motor and/or the second motor; in the pure electric second-gear mode, the clutch is combined, the first brake device unlocks the second sun gear, the second brake device brakes the first planet carrier, and the first planet carrier is driven by the first motor and/or the second motor.
In an embodiment of the present invention, the hybrid drive system has a power-split hybrid first-gear mode and a power-split hybrid second-gear mode, in the power-split hybrid first-gear mode, the clutch is disengaged, the first brake device brakes the second sun gear, the second brake device unlocks the first carrier, is driven by the engine, and the first motor and/or the second motor are/is driven; and under the power-split hybrid-power second-gear mode, the clutch is combined, the first brake device unlocks the second sun gear, the second brake device unlocks the first planet carrier, and the engine drives the first motor and/or the second motor to drive the second sun gear and the second planet carrier.
The invention also provides a vehicle comprising the hybrid power driving system.
The hybrid power driving system is simple and compact in overall structure and convenient to arrange, can realize a pure electric first-gear mode, a pure electric second-gear mode, a power-division hybrid first-gear mode and a power-division hybrid second-gear mode, switches working modes according to vehicle speed and vehicle torque requirements, and can obtain better dynamic property and economy.
Drawings
Fig. 1 is a schematic configuration diagram of a hybrid drive system of a first embodiment of the invention.
Fig. 2 is a lever diagram of the hybrid drive system of the first embodiment of the invention in the electric-only first-gear mode.
FIG. 3 is a lever diagram of the hybrid drive system of the first embodiment of the present invention in electric-only second gear mode.
FIG. 4 is a lever diagram of the hybrid drive system of the first embodiment of the present invention in a power-split hybrid first-speed mode.
FIG. 5 is a lever diagram of the hybrid drive system of the first embodiment of the present invention in a power-split hybrid two-speed mode.
Fig. 6 is a schematic configuration diagram of a hybrid drive system of a second embodiment of the invention.
FIG. 7 is a lever diagram of a hybrid drive system of a second embodiment of the present invention in electric-only first gear mode.
FIG. 8 is a lever diagram of a hybrid drive system of a second embodiment of the present invention in electric-only second gear mode.
FIG. 9 is a lever diagram of the hybrid drive system of the second embodiment of the present invention in a power-split hybrid first-speed mode.
Fig. 10 is a lever diagram of the hybrid drive system of the second embodiment of the present invention in a power-split hybrid two-speed mode.
Detailed Description
First embodiment
Fig. 1 is a schematic structural diagram of a hybrid drive system according to a first embodiment of the present invention, and as shown in fig. 1, the hybrid drive system includes an engine 11, an input shaft 12, a propeller shaft 13, a first electric machine 14, a planetary gear device 15, a clutch 16, a first brake device 17, a second brake device 18, an intermediate shaft 19, a second electric machine 20, a differential 21, and a power battery (not shown). The planetary gear device 15 includes a first sun gear 151, a first carrier 152, a ring gear 153, a second sun gear 155, and a second carrier 156, that is, the planetary gear device 15 has two planetary rows, and the two planetary rows share one ring gear 153, specifically, a first planetary gear 154 is disposed on the first carrier 152, the first planetary gear 154 is connected to the first carrier 152 through a rolling bearing or a sliding bearing, and the first planetary gear 154 is engaged with the first sun gear 151 and the ring gear 153, respectively; the second planet carrier 156 is provided with a second planet wheel 157, the second planet wheel 157 is connected to the second planet carrier 156 through a rolling bearing or a sliding bearing, and the second planet wheel 157 is meshed with the second sun gear 155 and the ring gear 153 respectively.
The engine 11 is connected to the input shaft 12, and the first carrier 152 is fixed to the input shaft 12 so that the input shaft 12 and the first carrier 152 can rotate synchronously. In the present embodiment, the engine 11 is a gasoline engine or a diesel engine.
The transmission shaft 13 and the input shaft 12 are arranged along the same axis, and the second sun gear 155 is fixed on the transmission shaft 13, so that the transmission shaft 12 and the second sun gear 155 can synchronously rotate.
As shown in fig. 1, the first motor 14 is connected to a first sun gear 151. Specifically, the first motor 14 includes a first housing 141, a first motor stator 142, and a first motor rotor 143, the first motor stator 142 is disposed opposite to the first motor rotor 143, the first motor stator 142 is connected in the first housing 141, and the first motor rotor 143 is fixed to the first sun gear 151. In this embodiment, the first motor 14 is an integrated drive and generator.
The clutch 16 is used to couple or decouple the second sun gear 155 and the ring gear 153. When the clutch 16 is engaged, the second sun gear 155 and the ring gear 153 are locked together; when the clutch 16 is disengaged, the second sun gear 155 and the ring gear 153 are disengaged from each other.
The first brake device 17 is connected to the transmission shaft 13, and the first brake device 17 is used to brake or unlock the second sun gear 155 through the transmission shaft 13. The first brake device 17 is, for example, a brake or a one-way clutch. When the first brake device 17 brakes the second sun gear 155, the second sun gear 155 is fixed so as not to rotate; when the first brake 17 unlocks the second sun gear 155, the second sun gear 155 can be rotated.
The second brake device 18 is connected to the input shaft 12, and the second brake device 18 is used to brake or unlock the first carrier 152 via the input shaft 12. The second brake device 18 is, for example, a brake or a one-way clutch. When the second brake device 18 brakes the first carrier 152, the first carrier 152 is fixed from rotation; when the second brake device 18 unlocks the first carrier 152, the first carrier 152 can rotate.
The second planet carrier 156 is connected to the intermediate shaft 19, specifically, a first gear 191 and a second gear 192 are fixedly arranged on the intermediate shaft 19, the first gear 191 and the second gear 192 are arranged at intervals, and the first gear 191 and the first planet carrier 152 are meshed with each other.
The second motor 20 is connected with the intermediate shaft 19, specifically, the second motor 20 is arranged in parallel with the first motor 14, the second motor 20 has a second motor output shaft 201, a third gear 202 is fixedly arranged on the second motor output shaft 201, and the third gear 202 is meshed with the first gear 191. The second motor 20 includes a second housing 203, a second motor stator 204, and a second motor rotor 205, one end of the second motor output shaft 201 is disposed in the second housing 203, the second motor stator 204 is disposed opposite to the second motor rotor 205, the second motor stator 204 is connected in the second housing 203, and the second motor rotor 205 is fixed on the second motor output shaft 201. In the present embodiment, the second motor 20 is a driving and power generating integrated machine.
The intermediate shaft 19 is connected to a differential 21, and specifically, a differential gear 211 is provided on the differential 21, and the differential gear 211 and the second gear 192 are meshed with each other. The differential 21 is used for adjusting the rotation speed difference of the left wheel and the right wheel, so that the left wheel and the right wheel roll at different rotation speeds when the automobile turns or runs on an uneven road surface, and the pure rolling motion of the driving wheels at two sides is ensured.
The power battery is electrically connected with the first motor 14 and the second motor 20 respectively. The power battery provides the first motor 14 and the second motor 20 with electric energy for driving, and the electric energy generated when the first motor 14 and the second motor 20 are driven to rotate can be stored in the power battery.
The hybrid power driving system has a pure electric first gear mode, a pure electric second gear mode, a power division hybrid first gear mode and a power division hybrid second gear mode.
Fig. 2 is a lever diagram of the hybrid drive system according to the first embodiment of the present invention in the electric-only first-gear mode, as shown in fig. 2, in the electric-only first-gear mode, the clutch 16 is disengaged, the first brake device 17 brakes the second sun gear 155, the second brake device 18 brakes the first carrier 152, the engine 11 is not operated, and the first electric machine 14 and/or the second electric machine 20 are driven. In this operating mode, the transmission mechanism formed by the ring gear 153, the second sun gear 155 and the second carrier 156 has a gear ratio of 
(i02Is the gear ratio of the ring gear 153 to the second sun gear 155), operation in the electric-only first-speed mode may result in better dynamic performance than the electric-only second-speed mode.
Fig. 3 is a lever diagram of the hybrid drive system according to the first embodiment of the present invention in the electric-only second-gear mode, as shown in fig. 3, in the electric-only second-gear mode, the clutch 16 is engaged, the first brake device 17 unlocks the second sun gear 155, the second brake device 18 brakes the first carrier 152, the engine 11 is not operated, and the first electric machine 14 and/or the second electric machine 20 drive the hybrid drive system. In the working mode, the transmission ratio of the transmission mechanism consisting of the gear ring 153, the second sun gear 155 and the second planet carrier 156 is 1, and the economy of a part of middle and high speed sections working in the pure electric two-gear mode can be better than that of the pure electric first-gear.
FIG. 4 is a lever diagram of the hybrid drive system of the first embodiment of the present invention in a power-split hybrid first-gear mode, as shown4, in power-split hybrid first-gear mode, the clutch 16 is disengaged, the first brake device 17 brakes the second sun gear 155, the second brake device 18 unlocks the first carrier 152, the engine 11 is driven, and the first electric machine 14 and/or the second electric machine 20 are driven (selectively to generate or drive the wheels depending on the operating conditions). In this operating mode, the gear ratio of the transmission mechanism formed by the ring gear 153, the second sun gear 155 and the second carrier 156 is set to 
(i02Is the gear ratio of the ring gear 153 to the second sun gear 155), operation in the power-split hybrid first-speed mode may result in better dynamic performance than the power-split hybrid second-speed mode.
Fig. 5 is a lever diagram of the hybrid drive system according to the first embodiment of the present invention in the power-split hybrid second-gear mode, as shown in fig. 5, in the power-split hybrid second-gear mode, the clutch 16 is engaged, the first brake device 17 unlocks the second sun gear 155, the second brake device 18 unlocks the first carrier 152, the first motor 14 and/or the second motor 20 are driven by the engine 11 (power generation or wheel driving is selected according to the remaining power of the power battery), and in the medium-small throttle condition, the first motor 14 generates power, and the second motor 20 assists to drive wheels; under throttle conditions, both the first electric machine 14 and the second electric machine 20 drive the wheels. In this operating mode, the transmission ratio of the transmission mechanism formed by the ring gear 153, the second sun gear 155 and the second carrier 156 is 1, and the power performance better than that of the power-split hybrid first-gear mode can be obtained when a part of the vehicle speed section is operated in the power-split hybrid second-gear mode.
The hybrid power driving system provided by the embodiment of the invention has a pure electric first gear mode, a pure electric second gear mode, a power division hybrid first gear mode and a power division hybrid second gear mode, and can automatically realize the switching of different modes according to the SOC (residual electric quantity) value of a power battery and the vehicle speed requirement. For example, judging the magnitude relation between the SOC value of the power battery and a first threshold value, or simultaneously judging the magnitude relation between the SOC value of the power battery and the first threshold value and the magnitude relation between the vehicle speed and a second threshold value; and switching the working mode of the hybrid power driving system according to the judgment result. It should be noted that the first threshold is used to determine the SOC value of the power battery, and the second threshold is used to determine the vehicle speed, and the embodiment does not limit the value ranges of the first threshold and the second threshold, and may be freely set according to a specific control strategy, and the values of the first threshold and the second threshold are different under different control strategies. After the first threshold value and the second threshold value are set, automatic judgment is carried out, and automatic switching is carried out among various modes according to the judgment result.
The various operating modes are embodied as follows in a table:
second embodiment
Fig. 6 is a schematic structural diagram of a hybrid drive system according to a second embodiment of the present invention, and as shown in fig. 6, the hybrid drive system of the present embodiment has substantially the same structure as the hybrid drive system of the first embodiment, except that: the absence of the second brake device 18 on the input shaft 12 is beneficial to reducing system complexity and cost. For the structure of the hybrid power driving system, please refer to the first embodiment, which is not described herein.
Fig. 7 is a lever diagram of the hybrid drive system according to the second embodiment of the present invention in the electric-only first-gear mode, as shown in fig. 7, in the electric-only first-gear mode, the clutch 16 is disengaged, the first brake device 17 brakes the second sun gear 155, the engine 11 and the first electric machine 14 are not operated, and the second electric machine 20 drives the hybrid drive system. In this operating mode, the transmission mechanism formed by the ring gear 153, the second sun gear 155 and the second carrier 156 has a gear ratio of
(i02Is the gear ratio of the ring gear 153 to the second sun gear 155), operation in the electric-only first-gear mode may result in better dynamic performance than the electric-only second-gear mode.
Fig. 8 is a lever diagram of the hybrid drive system according to the second embodiment of the present invention in the electric-only second-gear mode, in which the clutch 16 is engaged, the first brake device 17 unlocks the second sun gear 155, the engine 11 and the first electric machine 14 are not operated, and the second electric machine 20 drives the hybrid drive system, as shown in fig. 8. In the working mode, the transmission ratio of the transmission mechanism consisting of the gear ring 153, the second sun gear 155 and the second planet carrier 156 is 1, and the economy of a part of middle and high speed sections working in the pure electric two-gear mode can be better than that of the pure electric first-gear.
Fig. 9 is a lever diagram of the hybrid drive system according to the second embodiment of the present invention in the power-split hybrid first-gear mode, in which the clutch 16 is disengaged, the first brake device 17 brakes the second sun gear 155, the engine 11 is driven, and the first electric machine 14 and/or the second electric machine 20 are driven (to generate electricity or drive wheels according to the operating condition) as shown in fig. 9. Under the working condition of a medium-small throttle, the first motor 14 generates electricity, and the second motor 20 drives wheels in an auxiliary mode; under throttle conditions, both the first electric machine 14 and the second electric machine 20 drive the wheels. In this operating mode, the gear ratio of the transmission mechanism formed by the ring gear 153, the second sun gear 155 and the second carrier 156 is set to 
(i02Is the gear ratio of the ring gear 153 to the second sun gear 155), operation in the power-split hybrid first-speed mode may result in better dynamic performance than the power-split hybrid second-speed mode.
Fig. 10 is a lever diagram illustrating the hybrid drive system according to the second embodiment of the present invention in the power-split hybrid two-speed mode, in which the clutch 16 is engaged, the first brake device 17 unlocks the second sun gear 155, the engine 11 is driven, and the first electric machine 14 and/or the second electric machine 20 are driven (selectively generate power or drive wheels according to the remaining amount of the power battery), as shown in fig. 10. In this operation mode, the transmission ratio of the transmission mechanism formed by the ring gear 153, the second sun gear 155 and the second planet carrier 156 is 1, and the power performance better than that of the power-split hybrid first-gear mode can be obtained when part of the vehicle speed section is operated in the power-split hybrid second-gear mode.
The various operating modes are embodied as follows in a table:
in conclusion, the hybrid power driving system is simple and compact in overall structure and convenient to arrange, can realize a pure electric first-gear mode, a pure electric second-gear mode, a power-split hybrid first-gear mode and a power-split hybrid second-gear mode, switches working modes according to vehicle speed and vehicle torque requirements, and can obtain better dynamic property and economy. In addition, the power-dividing hybrid of the hybrid power driving system has two gears, and the working mode is switched according to the vehicle speed and the torque requirement of the whole vehicle, so that better dynamic property and economy can be obtained.
Further, the invention also provides a vehicle comprising the hybrid power driving system. The above embodiments are only examples of the present invention and are not intended to limit the scope of the present invention, and all equivalent changes and modifications made according to the contents described in the claims of the present invention should be included in the claims of the present invention.
Claims (10)
1. The utility model provides a hybrid drive system, characterized in that, includes engine (11), input shaft (12), transmission shaft (13), first motor (14), planetary gear device (15), clutch (16), first arresting gear (17), jackshaft (19), second motor (20) and differential mechanism (21), planetary gear device (15) include first sun gear (151), first planet carrier (152), ring gear (153), second sun gear (155) and second planet carrier (156), are equipped with first planet wheel (154) on first planet carrier (152), are equipped with second planet wheel (156) on second planet carrier (156), ring gear (153) respectively with first planet wheel (154), second planet wheel (157) meshing, wherein:
the engine (11) is connected with the input shaft (12), the first planet carrier (152) is fixed on the input shaft (12), the first motor (14) is connected with the first sun gear (151), and the second sun gear (155) is fixed on the transmission shaft (13);
The second planet carrier (156) is connected with the intermediate shaft (19);
the second motor (20) is connected with the intermediate shaft (19);
the intermediate shaft (19) is connected with the differential (21);
the clutch (16) is used for combining or separating the second sun gear (155) and the gear ring (153), the first braking device (17) is connected with the transmission shaft (13), and the first braking device (17) is used for braking or unlocking the second sun gear (155).
2. A hybrid drive system according to claim 1, further comprising a second brake device (18), said second brake device (18) being connected to said input shaft (12), said second brake device (18) being adapted to brake or unlock said first carrier (152).
3. Hybrid drive system according to claim 1 or 2, characterized in that a first gear (191) and a second gear (192) are fixedly arranged on the intermediate shaft (19), a differential gear (211) is arranged on the differential (21), the first gear (191) and the second carrier (156) are in mesh with each other, and the second gear (192) and the differential gear (211) are in mesh with each other.
4. A hybrid drive system according to claim 3, wherein said second electric machine (20) has a second electric machine output shaft (201), said second electric machine output shaft (201) having a third gear (202) fixed thereto, said third gear (202) being in mesh with said first gear (191).
5. Hybrid drive system according to claim 1 or 2, characterized in that the first electric machine (14) comprises a first housing (141), a first electric machine stator (142) and a first electric machine rotor (143), the first electric machine stator (142) being connected within the first housing (141), the first electric machine stator (142) being arranged opposite the first electric machine rotor (143), the first electric machine rotor (143) being fixed to the first planet carrier (152).
6. A hybrid drive system according to claim 1, characterized in that it has an electric-only first-gear mode, in which the clutch (16) is disengaged, and an electric-only second-gear mode, in which the first braking device (17) brakes the second sun gear (155), driven by the second electric machine (20); in the pure electric second gear mode, the clutch (16) is combined, the first braking device (17) is separated, and the second electric machine (20) drives the first braking device and the second braking device.
7. A hybrid drive system according to claim 1, characterized in that it has a power-split hybrid first gear mode, in which said clutch (16) is disengaged, said first braking device (17) brakes said second sun gear (155), is driven by said engine (11) and said first electric machine (14) and/or said second electric machine (20), and a power-split hybrid second gear mode; in the power-split hybrid second-gear mode, the clutch (16) is engaged, the first brake device (17) unlocks the second sun gear (155), is driven by the engine (11), and is driven by the first electric machine (14) and/or the second electric machine (20).
8. Hybrid drive system according to any one of claims 2 to 5, characterized in that it has an electric-only first-gear mode, in which the clutch (16) is disengaged, the first braking device (17) brakes the second sun wheel (155), the second braking device (18) brakes the first planet carrier (152), driven by the first electric machine (14) and/or the second electric machine (20), and an electric-only second-gear mode; in the electric-only second gear mode, the clutch (16) is engaged, the first brake device (17) unlocks the second sun gear (155), and the second brake device (18) brakes the first carrier (152) and is driven by the first electric machine (14) and/or the second electric machine (20).
9. Hybrid drive system according to any one of claims 2 to 5, characterized in that it has a power-split hybrid first gear mode, in which the clutch (16) is disengaged, the first braking device (17) brakes the second sun gear (155), the second braking device (18) unlocks the first planet carrier (152), is driven by the engine (11) and the first electric machine (14) and/or the second electric machine (20), and a power-split hybrid second gear mode; in the power-split hybrid second-gear mode, the clutch (16) is engaged, the first brake device (17) unlocks the second sun gear (155), the second brake device (18) unlocks the first carrier (152), is driven by the engine (11), and the first electric machine (14) and/or the second electric machine (20).
10. A vehicle comprising the hybrid drive system of any one of claims 1 to 9.
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| CN201910357711.7A CN111845316A (en) | 2019-04-29 | 2019-04-29 | Hybrid power driving system and vehicle |
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