CN113173067A - Hybrid power device, control system and automobile - Google Patents
Hybrid power device, control system and automobile Download PDFInfo
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- CN113173067A CN113173067A CN202110639817.3A CN202110639817A CN113173067A CN 113173067 A CN113173067 A CN 113173067A CN 202110639817 A CN202110639817 A CN 202110639817A CN 113173067 A CN113173067 A CN 113173067A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/26—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the motors or the generators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/36—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings
- 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
- B60K6/42—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
- B60K6/442—Series-parallel switching type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
- B60K6/52—Driving a plurality of drive axles, e.g. four-wheel drive
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
Abstract
The invention provides a hybrid power control system, which comprises an engine, a first motor and a second motor which are coaxially arranged, wherein a power input shaft of the engine is connected with a first planetary row, the first motor is connected with a sun gear of the first planetary row, the second motor is connected with a sun gear of a second planetary row, a power transmission shaft is used for outputting power from at least one power source of the engine, the first motor and the second motor to wheels so as to drive the wheels to rotate, and a clutch is arranged between the first planetary row and the power transmission shaft and used for transmitting the power from the first planetary row to the power transmission shaft in a combined state. The invention has the advantages of ingenious design, simple and compact structure, coaxial arrangement of the device consisting of the engine, the first motor and the second motor, effective reduction of the radial dimension of the assembly, simple transmission path, small mechanical loss and high transmission efficiency when the engine is directly driven, and thus, the invention has great application potential on most vehicle types with longitudinal arrangement requirements.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a hybrid power device, a control system and an automobile.
Background
At present, each domestic host machine factory also has strong interest in a series-parallel system, and develops similar products to be pushed to the market. At present, a lot of systems adopt double-motor coaxial layout and parallel-shaft speed reduction layout, in order to improve the integration level and reduce the assembly volume, a customized disc-type motor is adopted, so that the platform application of the system on different vehicle types becomes more difficult, the axial size and the radial size of the whole power assembly are both larger, the overall size is larger, the system can only be transversely arranged on most vehicle types, the arrangement difficulty is higher, and the arrangement requirement of longitudinal (rear-drive or four-drive) vehicles cannot be met.
Disclosure of Invention
According to one aspect of the present invention, at least one problem of the prior art is solved, and a hybrid power device, a control system and a vehicle are provided.
In a first aspect, an embodiment of the present invention provides a hybrid power apparatus, including an engine, a first motor, and a second motor, which are coaxially disposed;
the power input shaft of the engine is connected with the first planetary row and used for providing power input;
the first motor is connected with the sun gear of the first planet row and used for providing power input;
the second motor is connected with the sun gear of the second planet row and used for providing power input;
a power transmission shaft configured to output power from at least one power source among the engine, the first motor, and the second motor to the wheels to drive the wheels to rotate;
and the clutch is arranged between the first planetary row and the power transmission shaft and is used for transmitting power from the first planetary row to the power transmission shaft in a combined state.
In some embodiments, the engine power input shaft is connected to the ring gear of the first planetary row, the carrier of the first planetary row is fixed, the ring gear of the first planetary row is connected to the outer hub of the clutch, and the inner hub of the clutch is connected to the power transmission shaft.
In some embodiments, the planet carrier of the second planetary row is connected with the power transmission shaft, and the ring gear of the second planetary row is fixed.
In some embodiments, the engine power input shaft is connected to the planet carrier of the first planetary row, the ring gear of the first planetary row is fixed, the planet carrier of the first planetary row is connected to the outer hub of the clutch, and the inner hub of the clutch is connected to the power transmission shaft.
In some embodiments, the ring gear of the second planetary row is connected with the power transmission shaft, and the planet carrier of the second planetary row is fixed.
In some embodiments, a hybrid power unit case is further included, and the first electric machine, the second electric machine, the first planetary row, the second planetary row, and the clutch are integrated within the hybrid power unit case.
In some embodiments, the electric vehicle further comprises a motor controller for controlling the first motor and the second motor, wherein the motor controller is connected with the power battery.
An embodiment of the present invention further provides a hybrid control system for driving a hybrid vehicle, including:
the above hybrid power device, and
the mode switching device is used for determining the working mode of the hybrid power device according to the current battery electric quantity SOC (or SOE (state of charge) value or/and the current speed of the automobile and the torque/power required by the driver and switching the hybrid power device to the determined working mode, wherein the working mode comprises a single-motor pure electric driving mode, a double-motor pure electric driving mode, an engine direct driving mode, a series hybrid power driving mode and a parallel hybrid power driving mode.
In some embodiments, the mode switching device further comprises:
the comparison unit is used for comparing the current battery electric quantity SOC (or SOE) value with a first threshold value, or/and comparing the current vehicle speed of the vehicle with a second threshold value, or/and comparing the required torque/power of the driver with a third threshold value;
the confirming unit is used for confirming the working mode of the hybrid power coupling control system according to the comparison result of the comparison unit;
and the switching execution unit is used for controlling the closing or the position of each element in the hybrid power control system according to the working mode determined by the determination unit so as to switch the hybrid power device to the working mode.
The embodiment of the invention also provides a hybrid electric vehicle which comprises a vehicle body and the hybrid power control system arranged on the vehicle body, wherein the hybrid power control system is the hybrid power control system.
The invention has the beneficial effects that:
the invention has the advantages of ingenious design and simple and compact structure, and adopts the first planet row as the speed increasing mechanism between the engine and the first motor, thereby realizing the coaxial layout of the whole power assembly, effectively reducing the radial size of the assembly, having more compact size and simpler transmission system, having simple transmission path when the engine is directly driven, small mechanical loss, small size of the assembly and high transmission efficiency, and having great application potential on the vehicle models with longitudinal rear drive, longitudinal four-wheel drive and most longitudinal layout requirements.
Meanwhile, the motor fully exerts the driving capability of the motor, and in the aspect of power regulation, the driving power required by the power wheel can be effectively supplemented through the power battery, so that the power of the engine is more reasonably allocated, the working state of the engine is kept free from or less influenced by road conditions, and the engine can always work in a set optimal state, so that the efficiency of the whole vehicle is improved. Therefore, the automobile cost and the matched maintenance and management cost can be greatly reduced, and the corresponding working mode can be automatically switched according to the running condition, so that various requirements of a driver are met.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a hybrid power device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a hybrid power device according to another embodiment of the present invention;
FIG. 3 is a schematic diagram of a portion of a hybrid control system according to another embodiment of the present invention;
fig. 4 is a flowchart of a hybrid control method according to another embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Motor I in the drawings refers to a first motor in the embodiments of the present application, and motor II refers to a second motor in the embodiments of the present application.
Example 1
The hybrid power device provided by the embodiment of the invention comprises an engine 1, a first motor 2 and a second motor 5 which are coaxially arranged;
the power input shaft of the engine 1 is connected with the first planetary row 3 and is used for providing power input;
the first motor 2 is connected with the sun gear of the first planet row 3 and used for providing power input;
the second motor 5 is connected with the sun gear of the second planetary row 6 and used for providing power input;
a power transmission shaft 7 configured to output power from at least one power source among the engine 1, the first motor 2, and the second motor 5 to the wheels to drive the wheels to rotate;
and a clutch 4 provided between the first planetary row 3 and the power transmission shaft 7 for transmitting power from the first planetary row 3 to the power transmission shaft 7 in a coupled state.
In the embodiment, the power input shaft of the engine 1 may be a crankshaft of the engine 1 or a transmission shaft connected with the engine 1, and similarly, the power input shafts of the first motor 2 and the second motor 5 are motor shafts or transmission shafts connected with the motor shafts.
Therefore, the engine 1, the first motor 2 and the second motor 5 which are coaxially arranged are adopted, the first motor 2 is connected with the sun gear of the first planet row 3, the second motor 5 is connected with the sun gear of the second planet row 6, and the power transmission shaft 7 can output power from at least one power source of the engine 1, the first motor 2 and the second motor 5 to wheels through the clutch 4 arranged between the first planet row 3 and the power transmission shaft 7 so as to drive the wheels to rotate.
The hybrid power device comprises a hybrid power device box, wherein a first motor 2, a second motor 5, a first planet row 3, a second planet row 6 and a clutch 4 are integrated into the hybrid power device box, a power transmission shaft 7 is connected with a differential mechanism 8, and the differential mechanism 8 transmits power to wheels.
As shown in the figure, in this embodiment, a motor controller is further included for controlling the first motor 2 and the second motor 5, and the motor controller is further connected to a power battery. Therefore, when the first motor 2 and/or the second motor 5 work, the power battery can provide energy for the first motor 2 and/or the second motor 5; when the first motor 2 and/or the second motor 5 are in the power generation mode, the power battery can receive and store the energy provided by the first motor 2 and/or the second motor 5, and the engine 1 is connected with an oil tank which is used for providing the energy for the engine 1.
In the present application, the motor "working" means that the motor is in a state of converting electrical energy into mechanical energy or converting mechanical energy into electrical energy, the motor "non-working" means that the motor is in a state of not converting electrical energy into mechanical energy nor converting mechanical energy into electrical energy, and the "in a power generation mode" refers to that the motor is in a state of converting mechanical energy into electrical energy.
Therefore, in the embodiment, the device composed of the engine 1, the first motor 2 and the second motor 5 is coaxially arranged, the radial size of an assembly is effectively reduced, meanwhile, a transmission path is simple when the engine 1 is directly driven, mechanical loss is small, and meanwhile, due to the small size and high transmission efficiency of the assembly, the invention has great application potential on the vehicle models with longitudinal rear drive, longitudinal four-wheel drive and most longitudinal arrangement requirements.
Example 2
As a way to realize this, referring to fig. 1 on the basis of the above embodiment, an embodiment of the present invention provides a hybrid power device, which includes an engine 1, a first electric machine 2, and a second electric machine 5, which are coaxially disposed;
the power input shaft of the engine 1 is connected with the first planetary row 3 and is used for providing power input;
the first motor 2 is connected with the sun gear of the first planet row 3 and used for providing power input;
the second motor 5 is connected with the sun gear of the second planetary row 6 and used for providing power input;
a power transmission shaft 7 configured to output power from at least one power source among the engine 1, the first motor 2, and the second motor 5 to the wheels to drive the wheels to rotate;
and a clutch 4 provided between the first planetary row 3 and the power transmission shaft 7 for transmitting power from the first planetary row 3 to the power transmission shaft 7 in a coupled state.
In the embodiment, the power input shaft of the engine 1 is connected with the gear ring of the first planetary row 3, the gear ring of the first planetary row 3 is connected with the outer hub of the clutch 4, the inner hub of the clutch 4 is connected with the power transmission shaft 7, the planet carrier of the second planetary row 6 is connected with the power transmission shaft 7, and the planet carrier of the first planetary row 3 and the gear ring of the second planetary row 6 are fixedly connected with the gearbox casing.
Therefore, when the clutch 4 is in the engaged state, it is used to transmit power from the ring gear of the first planetary row 3 to the power transmission shaft 7, and when the clutch 4 is in the disengaged state, the power transmission path from the ring gear of the first planetary row 3 to the power transmission shaft 7 is disconnected. Therefore, after the clutch 4 is engaged, the power can be directly output to the power transmission shaft 7, namely, a gear is added to the automobile, and at the moment, the engine 1 and the first motor 2 can respectively correspond to two gears, so that the automobile can adapt to more working conditions.
Example 2
As a way to realize this, referring to fig. 2 on the basis of the above embodiment, another embodiment of the present invention provides a hybrid power device, which includes an engine 1, a first electric machine 2, and a second electric machine 5 coaxially disposed;
the power input shaft of the engine 1 is connected with the first planetary row 3 and is used for providing power input;
the first motor 2 is connected with the sun gear of the first planet row 3 and used for providing power input;
the second motor 5 is connected with the sun gear of the second planetary row 6 and used for providing power input;
a power transmission shaft 7 configured to output power from at least one power source among the engine 1, the first motor 2, and the second motor 5 to the wheels to drive the wheels to rotate;
and a clutch 4 provided between the first planetary row 3 and the power transmission shaft 7 for transmitting power from the first planetary row 3 to the power transmission shaft 7 in a coupled state.
In this embodiment, the power input shaft of the engine 1 is connected with the planet carrier of the first planetary gear set 3, the ring gear of the first planetary gear set 3 is fixed, the planet carrier of the first planetary gear set 3 is connected with the outer hub of the clutch 4, the inner hub of the clutch 4 is connected with the power transmission shaft 7, the ring gear of the second planetary gear set 6 is connected with the power transmission shaft 7, and the planet carrier of the second planetary gear set 6 is fixed. Specifically, in the present embodiment, the ring gear of the first planetary gear set 3 and the carrier of the second planetary gear set 6 are fixedly connected with the transmission case.
Therefore, when the clutch is in the engaged state, it is used to transmit power from the carrier of the first planetary row to the power transmission shaft, and when the clutch is in the disengaged state, the power transmission path from the carrier of the first planetary row 3 to the power transmission shaft is disconnected. Therefore, after the clutch is engaged, power can be directly output to the power transmission shaft, namely a gear is added for the automobile, and the engine and the first motor can respectively correspond to two gears at the moment, so that the clutch can adapt to more working conditions.
Example 3
As an achievable way, as can be seen with reference to fig. 3 on the basis of the above embodiment, an embodiment of the present invention further provides a hybrid control system for driving a hybrid vehicle, including:
the above hybrid power device, and
and the mode switching device is used for determining the working mode of the hybrid power device according to the current battery electric quantity value (SOC or SOE) or/and the current vehicle speed of the vehicle, the torque or/and the power required by the driver and switching the hybrid power device to the determined working mode, wherein the working mode comprises a single-motor pure electric driving mode, a double-motor pure electric driving mode, an engine 1 direct driving mode, a series hybrid driving mode and a parallel hybrid driving mode.
In some embodiments, the mode switching device further comprises:
the comparison unit is used for comparing the current battery electric quantity value (SOC or SOE) with a first threshold value, or/and comparing the current speed of the automobile with a second threshold value, and comparing the required torque/power of the driver with a third threshold value;
the confirming unit is used for confirming the working mode of the hybrid power coupling control system according to the comparison result of the comparison unit;
a switching execution unit for controlling the operation mode determined by the determination unit
The closing or position of various elements in the hybrid control system causes the hybrid device to switch to an operating mode.
Specifically, the switching execution unit specifically performs the switching of the working mode by adopting the following manner:
as shown in the figure, when the working mode is configured to be the single-motor pure electric driving mode, the clutch 4 is disconnected, the second motor 5 is used as the only power source, the second motor 5 is provided with electric energy by the power battery, and the vehicle is suitable for running when the power battery is sufficient in electric quantity and the required torque and/or required power is small, such as starting or low-speed running, deceleration feedback and other running conditions; the method specifically comprises the following steps: controlling the engine 1 and the first motor 2 not to work, controlling the clutch 4 to be disconnected, controlling the second motor 5 to work, and outputting driving force to wheels;
when the working mode is configured to be a double-motor pure electric driving mode, the first clutch 4 is in a closed state, the first motor 2 and the second motor 5 are used as power sources, electric energy of the first motor 2 and electric energy of the second motor 5 are both provided by power batteries, the two motors are driven simultaneously, and the double-motor pure electric driving mode is suitable for running under the running working condition that the power batteries are sufficient in electric quantity and the automobile is required to have large torque; the method specifically comprises the following steps: controlling the engine 1 to be closed (such as cylinder closing), controlling the first motor 2 and the second motor 5 to work, and outputting driving force to wheels together;
when the working mode is configured to be the direct-drive mode of the engine 1, the clutch 4 is combined, so that the working conditions that the vehicle speed is high, the vehicle speed and the torque required by the driver are in the high-efficiency range of the engine 1 or the power battery fails are met, and the working conditions are as follows: the engine 1 is controlled to work, the engine 1 can directly output power to tires through the clutch 4, the power transmission shaft 7 and the differential 8, and a transmission chain is simple, reliable and high in efficiency.
When the working mode is configured to be a series hybrid driving mode, the clutch 4 is in an off state and is suitable for the working condition that the power battery is low in electric quantity or has medium-low power requirement to operate in a series range extending mode; the method specifically comprises the following steps: firstly, an engine 1 is started by a first motor 2, power output by a power output shaft of the engine 1 is converted into electric energy through a first planet row 3 and the first motor 2, the generated electric energy can be converted into mechanical energy through a second motor 5, and the mechanical energy is transmitted to wheels through a second planet row 6, a differential 8 and the like to drive a vehicle to run; at this time, a part of the electric energy generated by the engine 1 driving the first electric machine 2 can be stored in the battery, or a part of the electric energy taken out of the battery and the electric energy generated by the first electric machine 2 are input into the second electric machine 5 together to be converted into mechanical energy to drive the vehicle. Meanwhile, the rotating speed of the engine 1 is decoupled from the vehicle speed, and the engine can work in a high-efficiency range, so that the oil consumption and emission of the engine 1 are prevented from being poor due to low speed and low power.
When the working mode is configured to be the parallel hybrid power driving mode, the clutch 4 is in a closed state, and the vehicle runs when being suitable for the working condition of high-speed and high-power requirements of the vehicle, specifically: controlling the engine 1, the first motor 2 and the second motor 5 to work simultaneously and outputting driving force to wheels together; or controlling the engine 1 and the second motor 5 to work and outputting driving force to wheels together; or a part of the power output by the engine 1 can be transmitted to the wheels through the clutch 4 in a mechanical path, and the other part of the power can be transmitted to the first motor 2 through the first planetary gear set 3, and the mechanical energy converted by the first motor 2 into electric energy can also be stored in the power battery.
The hybrid power control system provided by the invention has the advantages of ingenious design and simple and compact structure, and the driving capability of the motor is fully exerted by the motor; in the aspect of power regulation, the power of the engine 1 can be more reasonably allocated by effectively supplementing the driving power required by the power wheel through the power battery, the working state of the engine 1 is kept free from or less influenced by road conditions, and the engine 1 can always work in a set optimal state so as to improve the efficiency of the whole vehicle. The automobile cost and the matched maintenance and management cost can be greatly reduced, and the automobile can be automatically switched to a corresponding working mode according to the running condition, so that various requirements of a driver are met.
Example 4
As an implementable manner, as can be seen from fig. 4 on the basis of the above-described embodiments, the present embodiment provides a control method of a hybrid control system, the control method including the steps of:
step S1, determining the working mode of the hybrid power device according to the current battery electric quantity value (SOC or SOE) value or/and the current speed of the automobile and the torque/power required by the driver, wherein the working mode comprises a single-motor pure electric driving mode, a double-motor pure electric driving mode, an engine direct driving mode, a series hybrid driving mode and a parallel hybrid driving mode;
in step S2, the hybrid device is switched to the determined operation mode.
Specifically, step S10 further includes:
step S11, comparing the current battery electric quantity value (SOC or SOE) with a first threshold value, or/and comparing the current speed of the automobile with a second threshold value, or/and comparing the required torque/power of the driver with a third threshold value;
step S12, determining the working mode of the hybrid power coupling control system according to the comparison result;
and step S13, controlling the closing or the position of each element in the hybrid coupling control system according to the determined working mode, and enabling the hybrid device to be switched to the working mode.
Specifically, step S13 includes:
when the working mode is configured to be a single-motor pure electric driving mode, the engine 1 and the first motor 2 are controlled to be closed, the clutch 4 is controlled to be disconnected, the second motor 5 is controlled to work, and driving force is output to wheels;
when the working mode is configured to be a double-motor pure electric driving mode, the engine 1 is controlled to be switched off (such as a cylinder is closed), the clutch 4 is controlled to be combined, and the first motor 2 and the second motor 5 are controlled to work to jointly output driving force to wheels;
when the working mode is the direct drive mode of the engine 1, the clutch 4 is controlled to be combined to control the engine 1 to work, the engine 1 can directly output power to wheels through the clutch 4, the power transmission shaft 7 and the differential 8, and a transmission chain is simple, reliable and high in efficiency.
When the working mode is configured to be a series hybrid driving mode, the clutch 4 is in an off state and is suitable for the working condition that the power battery is low in electric quantity or has medium-low power requirement to operate in a series range extending mode; the method specifically comprises the following steps: firstly, an engine 1 is started by a first motor 2, power output by a power output shaft of the engine 1 is converted into electric energy through a first planetary row 3 and the first motor 2, the generated electric energy can be converted into mechanical energy through a second motor 5, and the mechanical energy is transmitted to wheels through a second planetary row, a differential 8 and the like to drive a vehicle to run;
when the working mode is configured to be the parallel hybrid power driving mode, the clutch 4 is in a closed state, and the vehicle runs when being suitable for the working condition of high-speed and high-power requirements of the vehicle, specifically: controlling the engine 1, the first motor 2 and the second motor 5 to work simultaneously and outputting driving force to wheels together; or controlling the engine 1 and the second motor 5 to work and outputting driving force to wheels together; or a part of the power output by the engine 1 can be transmitted to the wheels through the clutch 4 in a mechanical path, and the other part of the power can be transmitted to the first motor 2 through the first planetary gear set 3, and the mechanical energy converted by the first motor 2 into electric energy can also be stored in the power battery.
Therefore, the control method of the embodiment includes the single-motor pure electric drive mode, the double-motor pure electric drive mode, the direct drive mode of the engine 1, the series hybrid drive mode and the parallel hybrid drive mode, and an automobile equipped with the hybrid control system can automatically switch the working modes according to the running condition.
The embodiment of the invention also provides a hybrid electric vehicle which comprises a vehicle body and the hybrid power control system arranged on the vehicle body, wherein the hybrid power control system is the hybrid power control system.
In conclusion, compared with the prior art, the invention has the following beneficial effects:
in the pure electric working condition of the hybrid power device, the engine 1, the first motor 2 and the second motor 5 can be driven, so that the power performance can be improved; under various modes, the engine 1 can be controlled to work in a high-efficiency interval, the system efficiency is high, and the economical efficiency is good;
in addition, the engine 1, the first motor 2 and the second motor 5 of the hybrid power device are connected through the first planetary row 3, the clutch 4 and the second planetary row 6, the speed ratio is adjustable, the speed ratio range is large, and high-speed operation of the motors is facilitated, so that the size of the motors can be reduced, and space saving and light weight are facilitated; the hybrid power device has a simple structure.
In this document, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solution of the present invention, but not for limiting the same, and different technical features in different embodiments for the same protection main body can be combined arbitrarily; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A hybrid power device characterized by comprising: the motor, the first motor and the second motor are coaxially arranged;
the power input shaft of the engine is connected with the first planetary row and used for providing power input;
the first motor is connected with the sun gear of the first planet row and used for providing power input;
the second motor is connected with the sun gear of the second planet row and used for providing power input;
a power transmission shaft configured to output power from at least one power source among the engine, the first motor, and the second motor to the wheels to drive the wheels to rotate;
and the clutch is arranged between the first planetary row and the power transmission shaft and is used for transmitting power from the first planetary row to the power transmission shaft in a combined state.
2. A hybrid power plant according to claim 1, characterized in that the power input shaft of the engine is connected to the ring gear of the first planetary row, the carrier of the first planetary row is fixed, the ring gear of the first planetary row is connected to the outer hub of the clutch, and the inner hub of the clutch is connected to the power transmission shaft.
3. A hybrid power unit according to claim 2,
the planet carrier of the second planet row is connected with the power transmission shaft, and the gear ring of the second planet row is fixed.
4. A hybrid power unit according to claim 1, wherein the power input shaft of the engine is connected to the planet carrier of the first planetary row, the ring gear of the first planetary row is fixed, the planet carrier of the first planetary row is connected to the outer hub of the clutch, and the inner hub of the clutch is connected to the power transmission shaft.
5. A hybrid power unit according to claim 4,
and the gear ring of the second planet row is connected with the power transmission shaft, and the planet carrier of the second planet row is fixed.
6. A hybrid power unit as defined in claim 1, further comprising a differential, said power transmission shaft being connected to said differential, said differential transmitting power to the wheels.
7. A hybrid control system for driving a hybrid vehicle, comprising:
the hybrid power plant of claims 1-6, and
the mode switching device is used for determining the working mode of the hybrid power device according to the current battery electric quantity value or/and the current speed of the automobile and the torque or/and the power required by the driver and switching the hybrid power device to the determined working mode, wherein the working mode comprises a single-motor pure electric driving mode, a double-motor pure electric driving mode, an engine direct driving mode, a series hybrid power driving mode and a parallel hybrid power driving mode.
8. A hybrid control system as set forth in claim 7 wherein said mode switching means further includes:
the comparison unit is used for comparing the current battery electric quantity value with a first threshold value, or/and comparing the current speed of the automobile with a second threshold value, or/and comparing the required torque or/and power of the driver with a third threshold value;
the confirming unit is used for confirming the working mode of the hybrid power coupling control system according to the comparison result of the comparison unit;
and the switching execution unit is used for controlling the closing or the position of each element in the hybrid power control system according to the working mode determined by the determination unit so as to switch the hybrid power device to the working mode.
9. Hybrid vehicle comprising a vehicle body and a hybrid control system provided to said vehicle body, characterized in that said hybrid control system is a hybrid control system according to any of the preceding claims 7 to 8.
10. Control method, characterized by being applied to control a hybrid control system according to any one of claims 7 to 8.
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| CN202110639817.3A CN113173067A (en) | 2021-06-08 | 2021-06-08 | Hybrid power device, control system and automobile |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110639817.3A CN113173067A (en) | 2021-06-08 | 2021-06-08 | Hybrid power device, control system and automobile |
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| CN113173067A true CN113173067A (en) | 2021-07-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023108660A1 (en) * | 2021-12-17 | 2023-06-22 | 舍弗勒技术股份两合公司 | Power system and control method for hybrid vehicle |
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