CN111890911A - Hybrid power system and vehicle - Google Patents

Hybrid power system and vehicle Download PDF

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Publication number
CN111890911A
CN111890911A CN202010296349.XA CN202010296349A CN111890911A CN 111890911 A CN111890911 A CN 111890911A CN 202010296349 A CN202010296349 A CN 202010296349A CN 111890911 A CN111890911 A CN 111890911A
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China
Prior art keywords
motor
engine
driving
vehicle
pulley
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Pending
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CN202010296349.XA
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Chinese (zh)
Inventor
潘国扬
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Zhejiang Wanliyang Transmission Co Ltd
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Zhejiang Wanliyang Transmission Co Ltd
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Priority to CN202010296349.XA priority Critical patent/CN111890911A/en
Publication of CN111890911A publication Critical patent/CN111890911A/en
Pending legal-status Critical Current

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/36—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—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
    • B60K6/40—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 assembly or relative disposition of components
    • 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
    • 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
    • B60K6/543—Transmission for changing ratio the transmission being a continuously variable transmission
    • 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 system and a vehicle, wherein the hybrid power system comprises: the electric main driving mechanism comprises a first motor and is used for driving a vehicle; the power coupling mechanism comprises a second motor and a clutch group, and the second motor is used for being connected with an engine of a vehicle; the clutch group is combined, the second motor and the engine are connected with the electric main drive mechanism, the clutch group is separated, and the second motor and the engine are separated from the electric main drive mechanism. According to the technical scheme, the engine and the motor can be ensured to simultaneously and efficiently operate under a plurality of working conditions, the most efficient work of the whole vehicle system can be ensured under the plurality of working conditions, energy conservation and emission reduction are realized, the impact feeling caused by the change of the driving torque can be reduced when the electric driving mode enters the engine driving mode, the driving comfort is improved, and the whole structure of the hybrid power system is small in occupied space and light in weight.

Description

Hybrid power system and vehicle
Technical Field
The invention relates to the technical field of vehicles, in particular to a hybrid power system and a vehicle.
Background
A typical hybrid powertrain system includes an electric machine, a power coupling mechanism, and a transmission. The Transmission uses a conventional multi-speed AT (automatic Transmission) Transmission, a DCT (Dual Clutch Transmission) Transmission, or a Transmission specifically developed to be composed of a planetary gear mechanism or a fixed-axis gear mechanism. The power generated by the internal combustion engine or the motor is transmitted to the transmission, respectively, and the power is output to the wheels through the transmission, and the internal combustion engine and the motor can independently or simultaneously output the power to the transmission, or the energy of the internal combustion engine simultaneously drives the wheels and the power is stored through the power generation of the motor. Generally, a hybrid power system has an internal combustion engine driving mode, a pure electric machine driving mode and a mode of driving an internal combustion engine and a motor simultaneously, and the modes are switched by an execution system inside a transmission.
Although the current hybrid transmissions achieve the above driving modes and achieve the purposes of energy conservation and emission reduction by switching corresponding working modes according to different working conditions, the current systems have certain technical limitations, some AT transmissions achieve different driving modes through clutches, so that the effects of energy conservation and emission reduction are achieved, the efficiency of an engine cannot be exerted to the maximum extent due to the fact that the engine cannot work in the most efficient area all the time due to stepped speed change of the AT transmissions, and sudden change of vehicle driving torque can generate impact feeling and driving comfort is affected due to the fact that the engine is started in the pure electric driving process; in addition, the transmission of the existing hybrid power system has the requirements of continuous improvement and improvement on the oil saving rate, the structure size and the weight.
Disclosure of Invention
The present invention is directed to improving at least one of the technical problems of the prior art or the related art.
In view of the above, an object of the present invention is to provide a hybrid system.
It is another object of the present invention to provide a vehicle.
In order to achieve the above object, an aspect of the first aspect of the invention provides a hybrid system for a vehicle, including: the electric main driving mechanism comprises a first motor and is used for driving a vehicle; the power coupling mechanism comprises a second motor and a clutch group, and the second motor is used for being connected with an engine of a vehicle; the clutch group is combined, the second motor and the engine are connected with the electric main drive mechanism, the clutch group is separated, and the second motor and the engine are separated from the electric main drive mechanism.
In the technical scheme, the second motor is connected with the engine through the arrangement, the second motor and the engine can be separated from the electric main driving mechanism through the separation of the clutch group, so that the first motor can be used for driving the vehicle independently to realize a pure electric driving mode, the engine can also be started by using the second motor, after the rotating speed of the engine is stable, the clutch group is controlled to be combined again, at least one of the second motor and the engine can participate in the driving of the vehicle, the mode that the engine and the motor are driven simultaneously is realized, meanwhile, the clutch group is in a separation state in the starting process of the engine, and is combined again after the rotating speed is stable, so that the driving torque of the vehicle cannot generate sudden change, and the driving comfort is improved.
Specifically, by arranging the first motor, the second motor and the clutch group, the vehicle can be driven by only using the first motor, namely, a pure electric driving mode is adopted, and the first motor, the second motor and the engine can drive the vehicle together by combining the clutch group, so that a hybrid mode is realized; when the hybrid mode is started, the clutch group can be kept to be separated, the engine is quickly started through the second motor, at the moment, because the clutch group is in a separated state, torque impact generated in the starting process of the engine is isolated by the clutch group, the impact torque cannot be transmitted to wheels to cause impact feeling of the whole vehicle, and the riding comfort and the driving comfort are improved; then combine the clutch assembly again, come the vehicle of drive jointly to travel through engine and first motor, second motor, realize the series connection of thoughtlessly moving or increase journey mode, can make engine power transmit the wheel fast moreover through the quick combination of control clutch assembly, realize the quick response of power, satisfy whole car driving demand.
In the above technical solution, the electric main drive mechanism further includes: and the first belt pulley mechanism is connected with the first motor and is used for transmitting torque with the first motor.
In the technical scheme, the first belt wheel mechanism is arranged, so that the torque of the first motor can be conveniently output, the vehicle can be driven, the belt wheel mechanism is a flexible transmission mechanism, the position of the first belt wheel mechanism and the distance between the first belt wheel mechanism and the first motor can be flexibly set, the whole structure of a hybrid power system can be optimized, and the occupied space can be reduced.
In the above technical solution, the hybrid system further includes: the continuously variable transmission mechanism comprises a first pulley mechanism, a second pulley mechanism and a transmission belt, wherein the transmission belt is used for connecting the first pulley mechanism and the second pulley mechanism so as to transmit torque, and the second pulley mechanism is used for connecting wheels of a vehicle.
In the technical scheme, the stepless speed change mechanism comprises a first belt wheel mechanism and a second belt wheel mechanism, the structure is simple, the assembly is easy, and through the arrangement of the stepless speed change mechanism, the engine, the first motor and the second motor can realize stepless speed regulation through the stepless speed change mechanism, so that the first motor, the second motor and the engine can always work in an efficient rotating speed area, the efficient operation under each working mode is ensured, the efficiency of the engine is favorably exerted to the maximum extent, and the energy conservation and the consumption reduction can be realized.
In any one of the above technical solutions, the power coupling mechanism further includes: and the second motor is connected with the engine through the input shaft.
In the technical scheme, the second motor is connected with the engine through the input shaft, the structure is simple, the position of the second motor is easy to flexibly set, and torque is transmitted between the second motor and the engine.
In the above technical solution, the first pulley mechanism includes a first pulley shaft having a center hole; the input shaft is arranged in the central hole and is rotationally connected with the first pulley shaft through a bearing.
In the technical scheme, the input shaft is arranged in the central hole of the first pulley shaft, namely the input shaft and the first pulley mechanism are overlapped in certain space, so that the space of the whole hybrid power system in the axial direction of the input shaft is reduced, the space occupied by the whole hybrid power system is favorably reduced, and the structure is simplified; the input shaft is connected with the first belt wheel shaft through the bearing in a rotating mode, so that the rotation of the input shaft and the first belt wheel shaft or the rotation of the first belt wheel mechanism are not interfered with each other, under the separation state of the clutch group, the impact feeling generated when the engine is started to drive the input shaft to rotate cannot be transmitted to the first belt wheel mechanism through the first belt wheel shaft, the impact feeling cannot be transmitted to a vehicle, and the comfort of driving and riding is improved.
In the above technical solution, the power coupling mechanism further includes: the second rotor bracket is connected with the input shaft and rotates along with the input shaft; the second motor comprises a second rotor, and the second rotor is arranged on the second rotor bracket; the clutch pack comprises a driving clutch plate set and a driven clutch plate set, the driven clutch plate set is installed on the second rotor support, and the driving clutch plate set is installed on the first pulley shaft.
In the technical scheme, the driving clutch plate set and the driven clutch plate set are respectively arranged on the first pulley shaft and the second rotor support, so that the connection or the separation between the second rotor support and the first pulley shaft can be realized by controlling the connection and the separation of the driving clutch plate set and the driven clutch plate set, namely, the power transmission or the separation between the engine, the second motor and the first pulley mechanism is realized, the structure is simple, and the operation and the control are easy.
In the above technical solution, the power coupling mechanism further includes: the first oil pump is used for providing hydraulic oil for the hybrid power system and is connected with the input shaft.
In this technical scheme, link to each other with the input shaft through setting up first oil pump, be convenient for drive first oil pump work through the input shaft for the power of engine can drive first oil pump work through the input shaft, when engine work, provides the required hydraulic oil of hybrid power system work through first oil pump, need not additionally set up actuating mechanism for first oil pump, has reduced part quantity, has simplified the structure.
In the above technical solution, the hybrid system further includes: the chain wheel assembly comprises a driving chain wheel, a driven chain wheel and a chain, wherein the driving chain wheel, the driven chain wheel and the chain are meshed with each other, the driving chain wheel is connected with the input shaft, and the driven chain wheel is connected with the first oil pump.
In this technical scheme, through setting up the sprocket assembly, be convenient for transmit the power of input shaft for first oil pump to drive hydraulic oil and flow, and the sprocket structure is for other transmission structures such as gears, and is small, light in weight, and for flexible transmission, consequently both can alleviate holistic weight of hybrid power system and volume, can also set up the position of first oil pump in a flexible way, has promoted flexibility and the convenience of each parts overall arrangement in the hybrid power system.
In any one of the above solutions, the hybrid system further includes: the electronic oil pump is used for providing hydraulic oil for the hybrid power system; and/or the first electrical machine is a generator motor and/or the second electrical machine is a generator motor.
In the technical scheme, the electronic oil pump is arranged to be convenient to supplement the first oil pump, so that when the first oil pump cannot work due to the fact that an engine does not work, hydraulic oil is provided for the hybrid power system through the electronic oil pump, and speed change of the stepless speed change mechanism, combination and separation of the clutch group and lubrication and cooling of the whole hybrid power system are achieved; the first motor and the second motor are set as the generator motors, so that the generator motors are driven by the engine to generate electricity conveniently, particularly, when the vehicle decelerates, the kinetic energy of the vehicle can be reversely transmitted to the first motor serving as the generator motors through wheels, the effect of generating electricity and storing energy by the first motor is realized, energy is saved, consumption is reduced, and the oil saving rate of the vehicle is improved; the hybrid electric vehicle can also run at a low speed, when the electric quantity of the battery is low, the clutch group is kept to be separated, the engine is started quickly through the second motor, then the second motor serving as a generator motor is driven through the engine to generate electricity, the generated electric energy is supplied to the first motor to drive the vehicle to run, or is stored in the battery, and a hybrid series or range extending mode is realized; it will be appreciated that there is an electrical connection between the first and second electrical machines for the transfer of electrical energy.
An aspect of the second aspect of the invention provides a vehicle including: a chassis; the hybrid system according to any one of the first aspect to the above aspects is provided on a chassis.
In this technical scheme, by adopting the hybrid power system of any one of the above technical schemes, all beneficial effects of the above technical scheme are achieved, and are not described herein again; through setting up the chassis, be convenient for bear and install hybrid power system.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a schematic block diagram of a hybrid powertrain according to an embodiment of the present invention;
FIG. 2 is a partial schematic structural view of a hybrid powertrain according to an embodiment of the present invention;
FIG. 3 is a schematic block diagram of a hybrid powertrain according to another embodiment of the present invention;
fig. 4 is a schematic configuration diagram of a hybrid system of another embodiment of the invention.
Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 4 is:
10 first electric machine, 100 first stator, 102 first rotor, 104 first rotor carrier, 106 fourth gear, 20 second electric machine, 200 second stator, 202 second rotor, 204 second rotor carrier, 206 second gear, 22 clutch group, 220 driving clutch plate group, 222 driven clutch plate group, 24 input shaft, 240 first gear, 26 first oil pump, 30 first pulley mechanism, 300 first movable bevel gear, 302 first pulley shaft, 304 third gear, 32 second pulley mechanism, 34 drive belt, 400 drive sprocket, 402 chain, 404 driven sprocket, 50 electronic oil pump, 60 first bearing, 62 second bearing, 64 third bearing, 66 fourth bearing, housing 70, flywheel 80, output shaft 82, first gear group 840, second gear group 842, differential 86.
Detailed Description
So that the manner in which the above recited objects, features and advantages of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments thereof which are illustrated in the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
Some embodiments of the invention are described below with reference to fig. 1-4.
As shown in fig. 1 and 2, a hybrid system according to one embodiment of the present invention is for a vehicle, including: the electric vehicle comprises an electric main driving mechanism and a power coupling mechanism, wherein the electric main driving mechanism is used for driving a vehicle.
Specifically, the electric main driving mechanism comprises a first motor 10, the power coupling mechanism comprises a second motor 20 and a clutch group 22, and the second motor 20 is used for being connected with an engine of a vehicle; the clutch group 22 is combined, the second motor 20 and the engine are connected with the electric main drive mechanism, the clutch group 22 is separated, and the second motor 20 and the engine are separated from the electric main drive mechanism.
In this embodiment, the second motor 20 is connected to the engine, and the second motor 20 and the engine can be separated from the electric main drive mechanism by separating the clutch group 22, so that the vehicle can be driven by the first motor 10 alone to realize a pure electric drive mode, the engine can also be started by the second motor 20, and the clutch group 22 is controlled to be combined after the engine rotation speed is stable, so that at least one of the second motor 20 and the engine can participate in the driving of the vehicle to realize a mode in which the engine and the motor are driven simultaneously, and meanwhile, because the engine is in a separation state during the starting process, the clutch group 22 is combined after the rotation speed is stable, so that the vehicle driving torque cannot generate sudden change, and the driving comfort is improved.
Specifically, by arranging the first motor 10, the second motor 20 and the clutch group 22, the vehicle can be driven by only using the first motor 10, namely, by adopting a pure electric driving mode, and the vehicle can be driven by the first motor 10, the second motor 20 and the engine together by combining the clutch group 22, so that a hybrid mode is realized; when the hybrid mode is started, the clutch group 22 can be kept separated, the engine is quickly started through the second motor 20, at the moment, because the clutch group 22 is in a separated state, torque impact generated in the starting process of the engine is isolated by the clutch group 22, the impact torque cannot be transmitted to wheels to cause impact feeling of the whole vehicle, and the riding comfort and the driving comfort are improved; then, the clutch group 22 is combined, the engine, the first motor 10 and the second motor 20 are used for driving the vehicle to run together, a hybrid series connection or range extending mode is achieved, the power of the engine can be rapidly transmitted to wheels by controlling the rapid combination of the clutch group 22, the rapid response of the power is achieved, and the driving requirement of the whole vehicle is met.
In the above embodiment, the electric main drive mechanism further includes: the first pulley mechanism 30 is connected with the first motor 10, the first pulley mechanism 30 is used for transmitting torque with the first motor 10, and the torque of the first motor 10 is convenient to output, so that a vehicle is driven, the pulley mechanism is a flexible transmission mechanism, the position of the first pulley mechanism 30 and the distance between the first pulley mechanism 30 and the first motor 10 are convenient to flexibly set, the whole structure of a hybrid power system is favorable to optimization, and occupied space is reduced.
In some embodiments, the first motor 10 is a generator motor, so that when the vehicle decelerates, the power of the vehicle can be transmitted to the first motor 10 in a reverse direction, so that the first motor 10 generates electricity to store energy, thereby improving the oil saving rate and realizing energy saving and consumption reduction.
In the above embodiment, the hybrid system further includes: the continuously variable transmission mechanism comprises a first pulley mechanism 30, a second pulley mechanism 32 and a transmission belt 34, wherein the transmission belt 34 is used for connecting the first pulley mechanism 30 and the second pulley mechanism 32 to transmit torque, and the second pulley mechanism 32 is used for connecting wheels of a vehicle.
In this embodiment, the stepless speed change mechanism includes the first pulley mechanism 30 and the second pulley mechanism 32, and is simple in structure and easy to assemble, and through the arrangement of the stepless speed change mechanism, the engine, the first motor 10 and the second motor 20 can realize stepless speed regulation through the stepless speed change mechanism, so that the first motor 10, the second motor 20 and the engine can always work in an efficient rotating speed area, efficient operation under each working mode is ensured, the efficiency of the engine is favorably exerted to the maximum, and further energy conservation and consumption reduction are achieved.
In some embodiments, the second pulley mechanism 32 may be directly connected to the wheels of the vehicle; in other embodiments, the second pulley mechanism 32 also outputs torque to the wheels of the vehicle through other transmissions, such as a gear assembly, a differential, and so forth.
In any of the above embodiments, the power coupling mechanism further comprises: the input shaft 24 and the second motor 20 are connected with the engine through the input shaft 24, the structure is simple, the position of the second motor 20 is easy to flexibly set, and torque is transmitted between the second motor and the engine.
As shown in fig. 1 and 2, in some embodiments, a flywheel 80 is further disposed on the input shaft 24, the flywheel 80 is connected to a crankshaft of the engine, and the second motor 20 is connected to the engine through the input shaft 24 and the flywheel 80.
In other embodiments, as shown in fig. 3, the input shaft 24 is provided with a first gear 240, the rotating shaft of the second motor 20 is provided with a second gear 206, and the second motor 20 is connected to the engine through the first gear 240, the second gear 206, the input shaft 24 and the flywheel 80 by meshing the first gear 240 with the second gear 206.
As shown in fig. 4, in other embodiments, a third gear 304 is disposed on the first pulley shaft 302, a fourth gear 106 is disposed on the rotating shaft of the first motor 10, and the first motor 10 and the first pulley shaft 302 are in transmission connection through the engagement of the third gear 304 and the fourth gear 106; the second motor 20 is disposed on one side of the first pulley shaft 302 close to the flywheel 80, only one end of the input shaft 24 is rotatably connected to the first pulley shaft 302 through a bearing, and the other end of the input shaft 24 is rotatably connected to the housing 70 of the hybrid system through a bearing, so that the first motor 10 can be disposed on one side of the first pulley mechanism 30 in the circumferential direction, and the second motor 20 is disposed close to the flywheel 80, which is beneficial for shortening the length of the input shaft 24, thereby reducing the overall size of the hybrid system in the axial direction of the input shaft 24 and reducing the overall weight of the device.
In the above embodiment, the first pulley mechanism 30 includes the first pulley shaft 302, the first pulley shaft 302 having the center hole; the input shaft 24 is disposed in the central hole and is rotatably connected to the first pulley shaft 302 through a bearing, so that the input shaft 24 and the first pulley mechanism 30 are overlapped in space to a certain extent, and the space of the whole hybrid system in the axial direction of the input shaft 24 is reduced, thereby being beneficial to reducing the space occupied by the whole hybrid system and simplifying the structure.
As shown in fig. 1 and 2, in the above embodiment, the power coupling mechanism further includes: a second rotor support 204 connected to the input shaft 24 and rotating with the input shaft 24; the second motor 20 includes a second rotor 202, and the second rotor 202 is disposed on a second rotor support 204; the clutch pack 22 includes a driving clutch pack 220 and a driven clutch pack 222, the driven clutch pack 222 being mounted on the second rotor carrier 204, the driving clutch pack 220 being mounted on the first pulley shaft 302.
In this embodiment, by arranging the driving clutch plate set 220 and the driven clutch plate set 222 on the first pulley shaft 302 and the second rotor support 204, respectively, it is possible to realize the coupling or decoupling between the second rotor support 204 and the first pulley shaft 302, that is, the power transmission or decoupling between the engine, the second motor 20, and the first pulley mechanism 30 by controlling the coupling and decoupling of the driving clutch plate set 220 and the driven clutch plate set 222, and the structure is simple and easy to operate.
In some embodiments, the first electric machine 10 includes a first rotor 102, the electric primary drive mechanism further includes a first rotor support 104, the first rotor support 104 is coupled to the first pulley shaft 302 and rotates with the first pulley shaft 302; the first rotor 102 is arranged on a first rotor support 104.
Further, the first electric machine 10 further includes a first stator 100, the second electric machine 20 further includes a second stator 200, the hybrid system has a housing 70, and the first stator 100 and the second stator 200 are both mounted on the housing 70.
In the above embodiment, the power coupling mechanism further includes: the first oil pump 26 is used for providing hydraulic oil for the hybrid power system, the first oil pump 26 is connected with the input shaft 24, so that the first oil pump 26 is driven to work through the input shaft 24, the power of the engine can drive the first oil pump 26 to work through the input shaft 24, when the engine works, the hydraulic oil required by the operation of the hybrid power system is provided through the first oil pump 26, a driving mechanism does not need to be additionally arranged for the first oil pump 26, the number of parts is reduced, and the structure is simplified.
In the above embodiment, the hybrid system further includes: and a sprocket assembly including a driving sprocket 400, a driven sprocket 404 and a chain 402 engaged with each other, the driving sprocket 400 being connected to the input shaft 24, and the driven sprocket 404 being connected to the first oil pump 26.
In this embodiment, the sprocket assembly is provided to facilitate the power transmission of the input shaft 24 to the first oil pump 26 to drive the hydraulic oil to flow, and the sprocket structure is small and light in weight compared with other transmission structures such as gears, and is flexible in transmission, so that the overall weight and volume of the hybrid power system can be reduced, the position of the first oil pump 26 can be flexibly set, and the flexibility and convenience of the layout of the components in the hybrid power system are improved.
In any of the above embodiments, the hybrid system further comprises: an electronic oil pump 50 for supplying hydraulic oil to the hybrid power system; and/or the first electrical machine 10 is a generator motor and/or the second electrical machine 20 is a generator motor.
In this embodiment, by providing the electronic oil pump 50 so as to supplement the first oil pump 26, when the engine is not operated and the first oil pump 26 is not operated, the hydraulic oil is supplied to the hybrid system through the electronic oil pump 50, so that the speed change of the continuously variable transmission mechanism, the engagement and disengagement of the clutch group 22, and the lubrication and cooling of the entire hybrid system are realized; the first motor 10 and the second motor 20 are set as generator motors, so that the generator motors are driven by the engine to generate electricity conveniently, specifically, for example, when the vehicle decelerates, kinetic energy of the vehicle can be reversely transmitted to the first motor 10 serving as the generator motor through wheels, and the effect of generating electricity and storing energy by the first motor 10 is realized, so that energy is saved, consumption is reduced, and the oil saving rate of the vehicle is improved; the hybrid series or range-extending mode can be realized by keeping the clutch group 22 separated when the battery power is low during the middle-low speed pure electric running and quickly starting the engine through the second motor 20, then driving the second motor 20 serving as a generator motor through the engine to generate electricity, and providing the generated electricity for the first motor 10 to drive the vehicle to run or storing the electricity in the battery; it will be appreciated that there is an electrical connection between the first electrical machine 10 and the second electrical machine 20 for the transfer of electrical energy.
An embodiment of a second aspect of the invention provides a vehicle comprising: a chassis; the hybrid system according to any one of the first to fourth embodiments is provided on a chassis.
In this embodiment, by adopting the hybrid power system of any one of the embodiments, all the beneficial effects of the embodiments are achieved, and are not described herein again; through setting up the chassis, be convenient for bear and install hybrid power system.
According to a hybrid system of one embodiment presented herein, the hybrid system includes an internal combustion engine as an engine; the hybrid system further includes a first electric machine 10, a second electric machine 20, and a continuously variable transmission mechanism.
The continuously variable transmission mechanism includes a first pulley mechanism 30, a second pulley mechanism 32, and a belt 34, and the first motor 10 and the second motor 20 are respectively disposed on both sides of the first pulley mechanism 30.
Specifically, the hybrid power system comprises an engine, an electric main driving mechanism, a power coupling mechanism, a stepless speed change mechanism, a gear and a speed reduction mechanism consisting of a differential 86.
More specifically, the engine is an internal combustion engine, and the electric main drive mechanism includes a first electric motor 10 and a first pulley mechanism 30; the power coupling mechanism comprises a second motor 20, a clutch group 22 and an input shaft 24, wherein the second motor 20 is a generator motor and is connected with the engine to start the engine; the stepless speed change mechanism comprises a first pulley mechanism 30, a second pulley mechanism 32 and a transmission belt 34, wherein the transmission belt 34 is made of a steel belt; by controlling the engagement or disengagement of the clutch pack 22, a purely electric driving mode driven by the first electric machine 10 can be realized; the hybrid series mode that the engine drives the second motor 20 to generate electricity, then the electricity generated by the second motor 20 is input to the first motor 10, and the first motor 10 drives the vehicle to run can also be realized; the hybrid parallel motion mode that the first motor 10, the second motor 20 and the engine simultaneously output power to drive the vehicle to run can be realized, or the engine outputs power to wheels, and the first motor 10 or the second motor 20 selects a hybrid parallel energy-saving mode that the vehicle is driven by power generation and energy storage or discharge according to the requirement of a driver on power; meanwhile, the engine, the first motor 10 and the second motor 20 can work in a most efficient rotating speed area by being adjusted through the stepless speed change mechanism in a plurality of modes, so that the best fuel economy is ensured, the engine or the first motor 10 and the second motor 20 are prevented from working in a high rotating speed area, the driving comfort of the whole vehicle is greatly improved, and the torque and rotating speed requirements of the first motor 10 and the second motor 20 can be greatly reduced under the condition of meeting the requirement of the same driving performance of the whole vehicle due to the flexible adjustment of the speed ratio of the stepless speed change mechanism, so that the cost of the hybrid system is greatly reduced.
The technical scheme of the specific embodiment is as follows:
the present embodiment is directed to a hybrid power system for a vehicle, which can implement a pure internal combustion engine driving mode, a pure electric motor driving mode, and a mode in which an internal combustion engine and a motor are simultaneously driven of a conventional hybrid power system, and can also implement a hybrid series mode in which an engine drives one of the motors to generate electricity, and the generated electricity drives the vehicle to run through the other motor, the engine or the motor works in the most efficient rotating speed area through the adjustment of the stepless speed change mechanism, thereby not only ensuring the best fuel economy, meanwhile, the engine or the motor is prevented from working in a high rotating speed area, the driving comfort of the whole vehicle is greatly improved, and because the speed ratio of the stepless speed change mechanism is flexibly adjusted, the requirements of the torque and the rotating speed of the motor can be greatly reduced under the condition of meeting the requirement of the same driving performance of the whole vehicle, and the cost of the hybrid power system is greatly reduced. Meanwhile, through the optimized structural design, the size of the whole hybrid power system is controlled within the range of a traditional transmission, and the applicability of the whole vehicle arrangement is greatly improved.
The hybrid system of the present embodiment includes: an electric main drive mechanism, a power coupling mechanism having the functions of generating electricity and starting an engine, a pulley steel belt speed change mechanism (i.e., a continuously variable transmission mechanism), a speed reduction mechanism, a differential 86, and the first oil pump 26.
As shown in fig. 2, the electric main drive mechanism, the power coupling mechanism and the first pulley mechanism 30 of the continuously variable transmission mechanism are arranged together, the engine, the first electric machine 10 and the second electric machine 20 can realize stepless speed regulation through the continuously variable transmission mechanism, and the power is transmitted to the wheels after being regulated by the continuously variable transmission mechanism.
In one aspect of this particular embodiment, an electric main drive mechanism includes: a first motor 10, a first pulley mechanism 30, a first rotor support 104, and a plurality of support bearings.
In another aspect of this particular embodiment, the hybrid system has a housing 70; in the electric main drive mechanism, the first stator 100 of the first electric motor 10 is fixed on the housing 70 of the hybrid system, the first rotor 102 of the first electric motor 10 is fixed on the first rotor bracket 104, the first rotor bracket 104 is fixedly connected with the first pulley shaft 302 of the first pulley mechanism 30, and the first pulley mechanism 30 is connected to the housing 70 of the hybrid system through a bearing.
In another aspect of this particular embodiment, the power coupling mechanism includes: a second electric machine 20, the second electric machine 20 being a generator motor; the power coupling mechanism further comprises: the clutch pack 22, the second rotor bracket 204, the input shaft 24 and the first oil pump 26, and a plurality of support bearings. The second stator 200 of the second electric machine 20 is fixed on the housing 70, the second rotor 202 of the second electric machine 20 is fixed on the second rotor support 204, the driven clutch plate set 222 of the clutch set 22 is mounted on the second rotor support 204, the driving clutch plate set 220 of the clutch set 22 is mounted on the first pulley shaft 302 of the electric main drive mechanism, the second rotor support 204 is fixedly connected with the input shaft 24, the input shaft 24 is connected to the housing 70 through a bearing, and the first oil pump 26 is connected to the input shaft 24 so as to drive the first oil pump 26 to work through the input shaft 24.
In another aspect of this particular embodiment, the input shaft 24 of the power coupling mechanism is coaxially mounted within the central bore of the primary pulley shaft 302 of the electric primary drive mechanism, and the two components are connected by bearings so that the two components can rotate freely.
In another aspect of this embodiment, the first oil pump 26 is connected to the input shaft 24 of the power coupling mechanism through a sprocket assembly, so that the arrangement of the first oil pump 26 and the input shaft 24 that are not coaxial is realized, and the axial space of the hybrid system can be saved, wherein the driving sprocket 400 is fixedly installed on the input shaft 24, the driven sprocket 404 is installed on the driving shaft of the first oil pump 26, the first oil pump 26 is externally fixed on the housing 70 of the hybrid system, and the driving sprocket 400 and the driven sprocket 404 are connected through the chain 402.
In other embodiments, if the axial space allows, the first oil pump 26 can be directly installed coaxially with the input shaft 24, and the input shaft 24 and the first oil pump 26 are directly connected with the driving shaft, so that the transmission mechanisms such as the chain wheel 402 and the like are reduced, the number of parts is reduced, the structure is simplified, and the cost is reduced.
In another aspect of this embodiment, the input shaft 24 of the power coupling mechanism is connected to the flywheel 80, and the flywheel 80 is directly connected to the crankshaft of the engine, so that when the engine is operated, the second electric machine 20 and the first oil pump 26 are driven to operate together through the input shaft 24.
In another aspect of this embodiment, a motor-driven electronic oil pump 50 is installed in the hybrid system to ensure that hydraulic oil can be supplied to the hybrid system through the electronic oil pump 50 when the engine is not operating.
In another aspect of this particular embodiment, the continuously variable transmission mechanism includes: the driving device comprises a first belt pulley mechanism 30, a second belt pulley mechanism 32 and a driving belt 34, wherein the first belt pulley mechanism 30 consists of a first belt pulley shaft 302 and a first movable bevel pulley 300, the second belt pulley mechanism 32 consists of a second belt pulley shaft and a second movable bevel pulley, and the driving belt 34 is respectively arranged on a bevel pulley groove of the first belt pulley mechanism 30 and a bevel pulley groove of the second belt pulley mechanism 32, so that the transmission of power from the first belt pulley mechanism 30 to the second belt pulley mechanism 32 is realized, and meanwhile, the stepless speed regulation is realized; it is understood that the power of the vehicle may also be transmitted in reverse from the second pulley mechanism 32 to the first pulley mechanism 30 when the vehicle is decelerating.
In another aspect of this particular embodiment, the second pulley mechanism 32 of the continuously variable transmission mechanism is coupled to a reduction mechanism, a differential 86, which effects final transmission of power from the engine or motor to the wheels, the reduction mechanism including a plurality of gears.
In another aspect of the present embodiment, the shifting operation of the continuously variable transmission mechanism and the clutch engaging and disengaging operation of the clutch pack 22 are realized by the oil pressure generated by the first oil pump 26.
In another aspect of this embodiment, the first motor 10 and the first pulley shaft 302 may be coaxially connected, or may not be installed on the same shaft center, but a gear or a sprocket is installed on the motor shaft and the first pulley shaft 302, respectively, so that the transmission of the rotational power is realized through the gear or the sprocket; similarly, the second motor 20 and the input shaft 24 may be connected coaxially or not, and the transmission of the rotational power is realized by a gear or a sprocket.
The implementation of this specific example is as follows:
exemplary implementations of the present specific embodiments will be described below with reference to the accompanying drawings. Hereinafter, the same components or terms will be denoted by the same symbols, and the detailed description will not be repeated with the same symbols.
First, a hybrid system including the present embodiment will be described with reference to fig. 1 and 2.
The first electric machine 10 includes a first stator 100, a first rotor 102; the main driving mechanism comprises a first motor 10, a first rotor bracket 104, a first pulley shaft 302, a first movable cone pulley 300 and a first bearing 60, which jointly form the electric main driving mechanism.
The second motor 20 includes a second stator 200, a second rotor 202; the second motor 20, the second rotor bracket 204, the clutch group 22, the input shaft 24, the first oil pump 26, and the power coupling mechanism composed of the second bearing 62, the third bearing 64, and the fourth bearing 66.
The first stator 100 is fixedly installed on the shell 70 of the hybrid power system, and the first rotor 102 is fixedly connected with the first rotor bracket 104; the first rotor bracket 104 is fixedly arranged on the first pulley shaft 302, so that the direct power transmission between the first motor 10 and the first pulley mechanism 30 is realized; the second stator 200 is fixedly mounted on the housing 70 of the hybrid power system, the second rotor 202 is fixedly connected with the second rotor support 204, the second rotor support 204 is fixedly connected with the input shaft 24, the input shaft 24 is fixedly connected with the flywheel 80, and the flywheel 80 is connected with the crankshaft of the engine, so that the direct power transmission between the engine and the second motor 20 is realized, the engine can drive the second motor 20 to generate power, or the engine is started through the second motor 20.
The driving sprocket 400 is fixedly connected to the input shaft 24, the driven sprocket 404 is connected to the driving shaft of the first oil pump 26, and the chain 402 is respectively installed on the driving sprocket 400 and the driven sprocket 404, so that the power of the engine drives the first oil pump 26 through the input shaft 24 to work, and when the engine works, hydraulic oil required by the operation of the hybrid power system is provided through the first oil pump 26.
The driving clutch plate set 220 in the clutch set 22 is mounted on the first pulley shaft 302, the driven clutch plate set 222 is mounted on the second rotor bracket 204, and the connection or disconnection between the second rotor bracket 204 and the first pulley shaft 302 can be realized by controlling the connection and disconnection of the clutch set 22, so that the power transmission or disconnection between the engine and the second motor 20 and the first pulley mechanism 30 is realized.
The input shaft 24 and the first pulley shaft 302 are connected through a second bearing 62 and a third bearing 64, the outer rings of the second bearing 62 and the third bearing 64 are matched and installed with the inner wall of the central hole of the first pulley shaft 302, the outer periphery of the input shaft 24 is matched and installed with the inner rings of the second bearing 62 and the third bearing 64, the coaxial installation of the input shaft 24 and the first pulley shaft 302 is realized, and the input shaft 24 and the first pulley shaft 302 can realize mutually independent operation; input shaft 24 is fixedly mounted to housing 70 by fourth bearing 66, while first pulley shaft 302 is fixedly mounted to housing 70 by first bearing 60.
A first pulley mechanism 30 consisting of a first pulley shaft 302 and a first movable cone pulley 300; the stepless speed change mechanism consists of a first belt wheel mechanism 30, a second belt wheel mechanism 32 and a transmission belt 34, wherein the transmission belt 34 is respectively wound between cone pulleys of the first belt wheel mechanism 30 and the second belt wheel mechanism 32; the second pulley mechanism 32 and the output shaft 82 are in meshing transmission via a first gear set 840, and the output shaft 82 and the differential 86 shaft are in meshing transmission via a second gear set 842. The power transmitted to the first pulley mechanism 30 is adjusted in speed by the continuously variable transmission mechanism and then transmitted to the wheels through the gear and the differential 86.
Meanwhile, a motor-driven electronic oil pump 50 is installed on the hybrid power system, and when the engine does not work and the first oil pump 26 cannot work, hydraulic oil is supplied to the hybrid power system through the electronic oil pump 50, so that the speed change of the stepless speed change mechanism, the combination and separation of the clutch group 22 and the lubrication and cooling of the whole hybrid power system are realized.
Through the structure, when the vehicle runs at a middle and low speed by pure electric, the clutch group 22 is controlled to be separated, the first motor 10 transmits power to the transmission belt 34 through the first pulley mechanism 30, then transmits the power to the second pulley mechanism 32, and finally outputs the power to the wheels through the differential 86, or in the process of speed reduction, the kinetic energy of the vehicle is reversely transmitted to the first motor 10 through the wheels, so that the first motor 10 generates electricity and stores energy. When the battery is low in the middle-low speed pure electric driving, the clutch group 22 is kept to be separated, the engine is quickly started through the second motor 20, the second electric machine 20 is then driven by the engine to generate electricity, which is supplied to the first electric machine 10 to drive the vehicle, or stored in a battery, to achieve a hybrid series or range-extending mode, the mode can lead the engine to work in the most efficient running area under special working conditions, and at the same time, the first motor 10 is driven to work in the most efficient operation region, so that the whole system can operate efficiently, and the engine is started through the second motor 20, since the clutch pack 22 is kept disengaged during starting, the torque shock generated during starting of the engine is isolated by the clutch pack 22, and the shock torque cannot be transmitted to the wheels through the first pulley mechanism 30, so that the whole vehicle is not comfortable to shock. When the middle and high speed of a motor vehicle is driven, through combining clutch group 22, make the power of engine can directly transmit to the wheel after the stepless speed regulation of first band pulley mechanism 30, can adjust the engine speed through the stepless speed regulation under this operating mode, the output torque of engine is adjusted to the charge-discharge moment of torsion through first motor 10 or second motor 20 simultaneously, make the engine be in the most efficient operation region all the time, ensure the high-efficient operation of entire system, and can make engine power transmit to the wheel fast through the quick combination of control clutch group 22, realize the quick response of power, satisfy whole car driving demand.
When high-power output is needed to drive the vehicle to accelerate, the power of the engine and the power of the first motor 10 and the second motor 20 can be transmitted to the wheels through the first pulley mechanism 30 to realize a hybrid parallel mode by combining the clutch group 22, and meanwhile, the stepless speed regulation is realized through the stepless speed change mechanism, the torques of the engine and the motors are amplified and then output to the wheels, so that the effect of increasing the power is achieved, of course, if the power performance is kept unchanged, the requirements on the torques of the engine and the motors can be reduced through the system, particularly the torque of the motors is greatly reduced, the cost of the motors, the motor controllers and the batteries can be greatly reduced, and the system cost of the whole vehicle is reduced; meanwhile, when the engine and the motor work simultaneously to drive the vehicle to run at a high speed, the engine and the motor can always work in a medium-low rotating speed high-efficiency operation area through the stepless speed regulating mechanism, so that the high-efficiency operation of the whole vehicle can be ensured, the excellent NVH (Noise, Vibration, Harshness) performance can be ensured, the requirement on the highest rotating speed of the motor can be reduced, and the cost of the motor can be reduced; it is to be understood that for the sake of brevity, some of the contents herein will collectively refer to the first and second electric machines 10, 20 as electric machines.
Through the implementation scheme, the engine and the motor can be ensured to simultaneously and efficiently operate under multiple working conditions, the most efficient work can be realized under multiple working conditions of the whole vehicle system, and energy conservation and emission reduction are realized; on the premise of meeting the same dynamic property, the requirements on the torque and the rotating speed of the motor can be reduced, so that the cost of the motor, a controller and the like is reduced, and the cost of the whole vehicle is reduced; and because the stable switching of power and the continuous stepless adjustment of the rotating speed can be realized, the stability and the comfort can be ensured under a plurality of working conditions of the whole vehicle.
The technical scheme of the invention is described in detail in combination with the drawings, and by the technical scheme of the invention, the engine and the motor can be ensured to simultaneously and efficiently run under a plurality of working conditions, the most efficient work can be realized under a plurality of working conditions of the whole vehicle system, energy conservation and emission reduction are realized, when the electric driving mode enters the engine driving mode, the impact feeling caused by the change of the driving torque can be reduced, the driving comfort is improved, and the overall structure of the hybrid power system occupies small space and is light in weight.
In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A hybrid powertrain system for a vehicle, comprising:
an electric main drive mechanism including a first electric machine, the electric main drive mechanism for driving a vehicle;
the power coupling mechanism comprises a second motor and a clutch group, wherein the second motor is used for being connected with an engine of the vehicle;
the clutch group is combined, the second motor and the engine are connected with the electric main driving mechanism, the clutch group is separated, and the second motor and the engine are separated from the electric main driving mechanism.
2. The hybrid system according to claim 1,
the electric main drive mechanism further comprises:
and the first belt pulley mechanism is connected with the first motor and is used for transmitting torque with the first motor.
3. The hybrid system of claim 2, further comprising:
a continuously variable transmission mechanism comprising: the first pulley mechanism;
the transmission belt is used for connecting the first pulley mechanism and the second pulley mechanism so as to transmit torque, and the second pulley mechanism is used for connecting wheels of the vehicle.
4. The hybrid system according to claim 2 or 3,
the power coupling mechanism further comprises: and the second motor is connected with the engine through the input shaft.
5. The hybrid system according to claim 4,
the first pulley mechanism comprises a first pulley shaft having a central bore;
the input shaft is arranged in the central hole and is rotationally connected with the first pulley shaft through a bearing.
6. The hybrid system according to claim 5,
the power coupling mechanism further comprises:
the second rotor bracket is connected with the input shaft and rotates along with the input shaft;
the second motor comprises a second rotor, and the second rotor is arranged on the second rotor bracket;
the clutch group comprises a driving clutch plate set and a driven clutch plate set, the driven clutch plate set is installed on the second rotor support, and the driving clutch plate set is installed on the first pulley shaft.
7. The hybrid system according to claim 4,
the power coupling mechanism further comprises:
the first oil pump is used for providing hydraulic oil for the hybrid power system and is connected with the input shaft.
8. The hybrid system of claim 7, further comprising:
the chain wheel assembly comprises a driving chain wheel, a driven chain wheel and a chain, wherein the driving chain wheel, the driven chain wheel and the chain are meshed with each other, the driving chain wheel is connected with the input shaft, and the driven chain wheel is connected with the first oil pump.
9. The hybrid system according to any one of claims 1 to 3, characterized by further comprising:
the electronic oil pump is used for providing hydraulic oil for the hybrid power system; and/or
The first electrical machine is a generator motor, and/or
The second motor is a generator motor.
10. A vehicle, characterized by comprising:
a chassis;
the hybrid system of any one of claims 1-9, disposed on the chassis.
CN202010296349.XA 2020-04-15 2020-04-15 Hybrid power system and vehicle Pending CN111890911A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113978236A (en) * 2021-10-12 2022-01-28 奇瑞汽车股份有限公司 Hybrid powertrain system and control method
CN114953959A (en) * 2022-07-29 2022-08-30 浙江万里扬新能源驱动有限公司杭州分公司 CVT-based hybrid power system
WO2023016713A1 (en) * 2021-08-09 2023-02-16 Zf Friedrichshafen Ag Drive train for a vehicle and vehicle comprising same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023016713A1 (en) * 2021-08-09 2023-02-16 Zf Friedrichshafen Ag Drive train for a vehicle and vehicle comprising same
CN113978236A (en) * 2021-10-12 2022-01-28 奇瑞汽车股份有限公司 Hybrid powertrain system and control method
WO2023060789A1 (en) * 2021-10-12 2023-04-20 奇瑞汽车股份有限公司 Hybrid power system, control method, and vehicle
CN114953959A (en) * 2022-07-29 2022-08-30 浙江万里扬新能源驱动有限公司杭州分公司 CVT-based hybrid power system

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