CN111409441B - Hybrid power system and automobile - Google Patents

Hybrid power system and automobile Download PDF

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Publication number
CN111409441B
CN111409441B CN202010139327.2A CN202010139327A CN111409441B CN 111409441 B CN111409441 B CN 111409441B CN 202010139327 A CN202010139327 A CN 202010139327A CN 111409441 B CN111409441 B CN 111409441B
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China
Prior art keywords
gear
clutch
motor
input shaft
reduction
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CN202010139327.2A
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CN111409441A (en
Inventor
刘全有
梁健
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Zhejiang Geely Holding Group Co Ltd
Zhejiang Geely Automobile Research Institute Co Ltd
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Zhejiang Geely Holding Group Co Ltd
Zhejiang Geely Automobile Research Institute Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT 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
    • B60K6/00Arrangement 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
    • B60K6/20Arrangement 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
    • B60K6/22Arrangement 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
    • B60K6/36Arrangement 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
    • B60K6/365Arrangement 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT 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
    • B60K6/00Arrangement 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
    • B60K6/20Arrangement 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
    • B60K6/22Arrangement 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
    • B60K6/24Arrangement 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 combustion engines
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT 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
    • B60K6/00Arrangement 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
    • B60K6/20Arrangement 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
    • B60K6/22Arrangement 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
    • B60K6/26Arrangement 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT 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
    • B60K6/00Arrangement 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
    • B60K6/20Arrangement 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
    • B60K6/22Arrangement 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
    • B60K6/38Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the driveline clutches
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT 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
    • B60K6/00Arrangement 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
    • B60K6/20Arrangement 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
    • B60K6/50Architecture of the driveline characterised by arrangement or kind of transmission units
    • B60K6/54Transmission for changing ratio
    • B60K6/547Transmission for changing ratio the transmission being a stepped gearing
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/62Hybrid vehicles

Abstract

The invention discloses a hybrid power system and an automobile, which comprise an engine, a motor component, a planetary gear mechanism and a gear shifting execution element, wherein the engine is connected with an active end of a first clutch, a passive end of a second clutch and an active end of a fourth clutch into a whole through an input shaft, the motor component comprises a motor and a motor input shaft, one end of the motor input shaft is connected with the motor, the other end of the motor input shaft is respectively connected with a passive end of a third clutch and a passive end of the fourth clutch, the active end of the third clutch is connected with a large sun gear of the planetary gear mechanism through a first connecting shaft, and the active end of the second clutch is connected with a small sun gear of the planetary gear mechanism through a second connecting shaft. The invention can realize the parallel driving scheme of the torque coupling of the engine and the motor, greatly improves the acceleration performance and ensures that the automobile obtains more flexible acceleration effect.

Description

Hybrid power system and automobile
Technical Field
The invention belongs to the technical field of automatic gearboxes of hybrid electric vehicles, and particularly relates to a hybrid electric system and an automobile.
Background
At present, global energy is increasingly tense, and environmental protection is more and more emphasized. The development of environment-friendly and low-oil-consumption vehicles becomes the mainstream direction of research in the field of automobile engineering, and under the condition that the battery bottleneck of an electric vehicle is insufficient in power performance and mileage, a hybrid vehicle becomes a good transition and can be used for a long time. The hybrid electric vehicle not only keeps the advantage of ultra-low emission of the pure electric vehicle, but also exerts the advantage of high specific energy of the traditional internal combustion engine vehicle, and is a main way for solving two problems of energy and environment effectively and well in realizability at present.
The transmission is an important component of a transmission system, the application of the automatic transmission on a car is the most extensive at present, and the research of the hybrid power transmission system based on the automatic transmission is more realistic. In the prior art, the hybrid power system has a complex structure, is mostly a driving scheme of coupling a split-flow motor and the rotating speed of an engine, has the defects of poor acceleration, relative oil consumption and the like, and therefore needs to be optimized on the basis of the prior art.
Disclosure of Invention
The invention aims to solve the problems that in the prior art, the hybrid power is mostly a scheme of coupling a split-flow engine and the rotating speed of a motor, the acceleration is poor, and the braking energy recovery is not available in gears.
The invention provides a hybrid power system, which comprises an engine, a motor assembly, a planetary gear mechanism and a gear shifting execution element, wherein the gear shifting execution element comprises a first clutch, a second clutch, a third clutch and a fourth clutch;
the engine passes through the input shaft with the initiative end of first clutch the passive end of second clutch with the initiative end of fourth clutch is connected as an organic wholely, motor element includes motor and motor input shaft, the one end of motor input shaft with the motor is connected, the other end of motor input shaft respectively with the passive end of third clutch and the passive end of fourth clutch are connected, the initiative end of third clutch pass through first connecting axle with planetary gear mechanism's big sun gear is connected, the initiative end of second clutch pass through the second connecting axle with planetary gear mechanism's little sun gear is connected, planetary gear mechanism will the engine with motor element's power recombination is in order to realize the power take off of different drive modes and different gears.
Further, the gear shifting executing element also comprises a first brake clutch, a second brake clutch and a one-way brake;
the first brake clutch is arranged on the outer side of the first connecting shaft and used for braking the first connecting shaft and the large sun gear connected with the first connecting shaft, one ends of the second brake clutch and the one-way brake are connected with the planet carrier, and the other ends of the second brake clutch and the one-way brake are fixed on the shell.
Further, the planetary gear mechanism further comprises a pinion, a long gear, a planet carrier and a ring gear;
the pinion gears are supported on the planet carrier through bearings, and the pinion gears are meshed with the small sun gear and the long gear;
the long gear is supported on the planet carrier through a bearing, one end of the long gear is meshed with the gear ring, and the other end of the long gear is meshed with the large sun gear and the small gear;
one end of the planet carrier supports the pinion and the long gear, and the other end of the planet carrier is connected with the driven ends of the first clutch, the second brake clutch and the one-way brake respectively.
Further, the hybrid power system further comprises an output gear, and the gear ring is connected with the output gear through an output shaft.
Further, the hybrid power system can realize seven-gear power output in different modes including an engine driving mode, a motor driving mode and a split driving mode.
Furthermore, the motor input shaft comprises a first motor input shaft and a second motor input shaft, the first motor input shaft is connected with the motor, one end of the second motor input shaft is connected with the first motor input shaft, and the other end of the second motor input shaft is connected with the driven ends of the third clutch and the fourth clutch respectively.
Further, a first planetary reduction mechanism is arranged between the first motor input shaft and the second motor input shaft, the first planetary reduction mechanism comprises a first reduction sun gear, a first reduction planet gear and a first reduction gear ring,
the first reduction sun gear is connected with the first motor input shaft, the first reduction planet gear is supported on the second motor input shaft through a bearing, the first reduction planet gear is respectively meshed with the first reduction sun gear and the first reduction gear ring, the first reduction gear ring is fixed on the shell, and the first planet reduction mechanism is used for increasing the driving torque of the motor and increasing the rotating speed of the motor.
Further, a second planetary reduction mechanism is arranged between the first motor input shaft and the second motor input shaft, the second planetary reduction mechanism comprises a second reduction sun gear, a second reduction planet gear, a second reduction gear ring and a second reduction planet carrier,
the second speed reduction sun gear is connected with the first motor input shaft, the second speed reduction gear ring is connected with the second motor input shaft, the second speed reduction planet gear is respectively meshed with the second speed reduction sun gear and the second speed reduction gear ring, the second speed reduction planet gear is supported on the second speed reduction planet carrier through a bearing, and one end of the second speed reduction planet carrier is fixed on the shell.
Further, the axis of motor with the axis parallel arrangement of input shaft, the output of motor is provided with the action wheel, be provided with the follower on the input shaft, the action wheel with through chain, area or gear connection between the follower.
The invention also provides an automobile which comprises an automobile body, a chassis and the hybrid power system, wherein the hybrid power system is arranged on the chassis.
The embodiment of the invention has the following beneficial effects:
(1) one end of the motor connecting shaft is provided with the third clutch and the fourth clutch, so that the hybrid power system can realize a parallel driving scheme of torque coupling of an engine and a motor, the acceleration is greatly improved, and the automobile can obtain a more flexible acceleration effect.
(2) The invention removes the torque converter on the basis of the existing automatic speed change and adds a motor,
the hybrid power system can realize multi-mode hybrid power of seven gears and has the advantages of good acceleration and high utilization rate.
(3) The invention can use a low-power and low-speed motor, reduce the volume and weight of the motor and reduce the cost of the motor.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed for 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 only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic configuration diagram of a multi-mode hybrid system of embodiment 1 of the invention;
FIG. 2 is a schematic configuration diagram of a multi-mode hybrid system of embodiment 2 of the invention;
FIG. 3 is a schematic configuration diagram of a multi-mode hybrid system of embodiment 3 of the invention;
FIG. 4 is a schematic configuration diagram of a multi-mode hybrid system of embodiment 4 of the invention;
wherein the reference numerals in the figures correspond to: 1-engine, 2-motor assembly, 21-motor, 22-motor input shaft, 221-first motor input shaft, 222-second motor input shaft, 3-planetary gear mechanism, 31-large sun gear, 32-small sun gear, 33-pinion, 34-long gear, 35-planet carrier, 36-ring gear, 4-shift actuator, 41-first clutch, 42-second clutch, 43-third clutch, 44-fourth clutch, 45-first brake clutch, 46-second brake clutch, 47-one-way brake, 5-first connecting shaft, 6-second connecting shaft, 7-output shaft, 8-output gear, 9-housing, 11-input shaft, 10-first planetary reduction mechanism, 101-a first reduction sun gear, 102-a first reduction planet gear, 103-a first reduction ring gear, 12-a second planet reduction mechanism, 121-a second reduction sun gear, 122-a second reduction planet gear, 123-a second reduction ring gear, 124-a second reduction planet carrier, 13-a driving wheel, 14-a driven wheel.
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.
Example 1:
as shown in fig. 1, embodiment 1 of the present invention provides a hybrid system including an engine 1, a motor assembly 2, a planetary gear mechanism 3, and a shift actuator 4, the shift actuator 4 including a first clutch 41, a second clutch 42, a third clutch 43, and a fourth clutch 44;
the engine 1 is integrally connected to the driving end of the first clutch 41, the driven end of the second clutch 42 and the driving end of the fourth clutch 44 via an input shaft 11, the motor assembly 2 comprises a motor 21 and a motor input shaft 22, one end of the motor input shaft 22 is connected with the motor 21, the other end of the motor input shaft 22 is connected to the passive end of the third clutch 43 and the passive end of the fourth clutch 44, the driving end of the third clutch 43 is connected with the large sun gear 31 of the planetary gear mechanism 3 through the first connecting shaft 5, the driving end of the second clutch 42 is connected with the small sun gear 32 of the planetary gear mechanism 3 through a second connecting shaft 6, the planetary gear mechanism 3 combines the power of the engine 1 and the power of the motor assembly 2 to realize power output of different driving modes and different gears. In the embodiment of the present invention, the planetary gear mechanism is a ravigneaux planetary gear mechanism, wherein the large sun gear 41 and the small sun gear 42 adopt a sectional structure, so that the gear shifting is smoother. Specifically, the motor 21 includes a motor stator and a motor rotor, the motor rotor is coaxially disposed in the motor stator, and the motor stator is fixed to the housing. The motor input shaft 22 is connected to the motor rotor.
Specifically, the shift actuator 4 further includes a first brake clutch 45, a second brake clutch 46 and a one-way brake 47, the first brake clutch 45 is disposed outside the first connecting shaft 5 for braking the first connecting shaft 5 and the large sun gear 31 connected thereto, one end of the second brake clutch 46 and the one-way brake 47 is connected to the carrier 35, and the other end of the second brake clutch 46 and the one-way brake 47 is fixed to the housing 9. The one-way brake has the function of one-way fixation or one-way combination, and the use of the one-way brake during downshifting also has the function of eliminating downshifting impact.
Specifically, the planetary gear mechanism 3 further includes a pinion gear 33, a long gear 34, a carrier 35, and a ring gear 36; the pinion gears 33 are supported on the carrier 35 by bearings, and the pinion gears 33 mesh with the pinion sun gear 32 and the long gear 34; the long gear 34 is supported on the carrier 35 by a bearing, one end of the long gear 34 is engaged with the ring gear 36, and the other end of the long gear 34 is engaged with the large sun gear 31 and the small gear 33; one end of the carrier 35 supports the pinion gear 33 and the long gear 34, and the other end of the carrier 35 is connected to the driven ends of the first clutch 41, the second brake clutch 46, and the one-way brake 47, respectively.
Specifically, the hybrid system further includes an output gear 8, and the ring gear 36 is connected to the output gear 8 through an output shaft 7.
Specifically, the hybrid power system realizes seven-gear power output in different modes including an engine driving mode, a motor driving mode and a split driving mode.
The embodiment of the invention also provides an automobile which comprises an automobile body, a chassis and the hybrid power system, wherein the hybrid power system is arranged on the chassis.
The combination of the engine, the motor and the plurality of different gear shifting executing elements of the hybrid power system in the embodiment 1 of the invention can realize seven gears and three driving modes. The connection relationship of each connecting shaft and the shift actuator in embodiment 1 of the present invention conforms to the following mathematical model and shift logic.
Suppose that: the rotation speed of the input shaft 11 is N1; the first connecting shaft 5 rotates at a speed of N2; the rotating speed of the second connecting shaft 6 is N3; the rotating speed of the output shaft 7 is N4; the rotational speed of the carrier 35 is N5; the rotational speed of the motor input shaft 22 is N6; the number of teeth of the ring gear 36 divided by the number of teeth of the large sun gear 31 is K1; the number of teeth in ring gear 36 divided by the number of teeth in small sun gear 32 is K2.
1) The engine drives 1 gear, the second clutch 42 and the second brake clutch 46 are engaged, the N1 inputs engine power, the N2 rotates freely, and 6 shafting accords with the rotating speed equation as follows:
N2-(K1+1)*N5+K1*N4=0;
N3+(K2-1)*N5-K2*N4=0;
N1-N3=0;
N5=0;
n1 — engine speed;
or the motor and the engine drive 1 gear together, and the fourth clutch is engaged:
N1-N3=0;
N5=0;
N1-N6=0。
2) the engine drives 2 gear, the second clutch 42 and the first brake clutch 45 are engaged, the power of the engine is input by N1, and the 6 shafting speed equation is as follows:
N2-(K1+1)*N5+K1*N4=0;
N3+(K2-1)*N5-K2*N4=0;
N1-N3=0;
N2=0;
n1 — engine speed;
or the motor and the engine drive the 2 nd gear together, and the fourth clutch is engaged:
N1-N3=0;
N2=0;
N1-N6=0。
3) the engine drives 3 gear, the second clutch 42 and the first clutch 41 are engaged, the N1 inputs engine power, the N2 rotates freely, and the 6 shafting speed equation is as follows:
N2-(K1+1)*N5+K1*N4=0;
N3+(K2-1)*N5-K2*N4=0;
N1-N3=0;
N1-N5=0;
n1 — engine speed;
or the motor and the engine drive the 3 rd gear together, and the fourth clutch is engaged:
N1-N3=0;
N1-N5=0;
N1-N6=0。
4) the engine drives 4-gear, the first clutch 41 and the first brake clutch 45 are engaged, the N1 inputs engine power, the N2 freely rotates, and the 6 shafting speed equation is as follows:
N2-(K1+1)*N5+K1*N4=0;
N3+(K2-1)*N5-K2*N4=0;
N2=0;
N1-N5=0;
n1 — engine speed;
or, the motor and the engine drive 4 gears together, and the fourth clutch is engaged:
N2=0;
N1-N5=0;
N1-N6=0。
5) the motor drives 1 gear and reverse gear, the second brake clutch 46 or the one-way brake 47 is engaged, the third clutch 43 is engaged, the N6 inputs the power of the motor, the forward gear is 1 gear when the forward rotation is performed, the reverse gear is performed when the reverse rotation is performed, the N1 is in a free state, and the 6 shafting rotating speed equations are as follows:
N2-(K1+1)*N5+K1*N4=0;
N3+(K2-1)*N5-K2*N4=0;
N5=0;
N2-N6=0;
N1=0;
n6 ═ motor speed;
or, the motor and the engine drive reverse gear together, and the fourth clutch is engaged:
N5=0;
N2-N6=0;
N1-N6=0。
6) the split drive 1 gear, the second clutch 42 and the third clutch 43 are engaged, the power of an engine is input by N1, the power of a motor is input by N6, the rotating speed of the motor can be adjusted by forward and reverse rotation, and the rotating speed equation of 6 shafting is as follows:
N2-(K1+1)*N5+K1*N4=0;
N3+(K2-1)*N5-K2*N4=0;
N1-N3=0;
N2-N6=0;
n1 — engine speed;
n6 is the motor speed.
7) The split-flow drive 2-gear is realized, the first clutch 41 and the third clutch 43 are engaged, the N1 inputs engine power, the N6 inputs motor power, the motor can adjust the rotating speed in forward and reverse rotation, and the rotating speed equation of 6 shafting is as follows:
N2-(K1+1)*N5+K1*N4=0;
N3+(K2-1)*N5-K2*N4=0;
N1-N5=0;
N2-N6=0;
n1 — engine speed;
n6 — motor speed.
One end of the motor connecting shaft is provided with the third clutch and the fourth clutch, so that the hybrid power system can realize a parallel driving scheme of torque coupling of an engine and a motor, and the acceleration is greatly improved. The invention removes the torque converter on the basis of the existing automatic speed change, adds a motor, and the hybrid power system can realize multi-mode hybrid power of seven gears and has the advantages of good acceleration and high utilization rate. The rotating speed, torque and power of the motor can be reduced, the cost of the motor is reduced, and meanwhile, the running requirements of low-speed large torque, high-speed and high-rotating speed of the vehicle can be met. The invention can use low-power and low-speed motor, to reduce the volume and weight of motor.
Example 2
As shown in fig. 2, embodiment 2 of the present invention is a preferred embodiment of embodiment 1, and differs from embodiment 1 in that: the motor input shaft 22 includes a first motor input shaft 221 and a second motor input shaft 222, the first motor input shaft 221 is connected with the motor 21, one end of the second motor input shaft 222 is connected with the first motor input shaft 221, and the other end of the second motor input shaft 222 is connected with the driven ends of the third clutch 43 and the fourth clutch 44, respectively.
Specifically, a first planetary reduction mechanism 10 is disposed between the first motor input shaft 221 and the second motor input shaft 222, the first planetary reduction mechanism 10 includes a first reduction sun gear 101, a first reduction planet gear 102, and a first reduction ring gear 103, the first reduction sun gear 101 is connected to the first motor input shaft 221, the first reduction ring gear 103 is fixed to the housing 9, the first reduction planet gear 102 is supported on the second motor input shaft 222 through a bearing, the first reduction planet gear 102 is respectively engaged with the first reduction sun gear 101 and the first reduction ring gear 103, and the first planetary reduction mechanism 10 is configured to increase a motor driving torque and increase a motor rotation speed.
Example 3
As shown in fig. 3, embodiment 3 of the present invention is a preferred embodiment of embodiment 1, and differs from embodiment 1 in that: a second planetary reduction mechanism 12 is arranged between the first motor input shaft 221 and the second motor input shaft 222, the second planetary reduction mechanism 12 includes a second reduction sun gear 121, a second reduction planet gear 122, a second reduction ring gear 123 and a second reduction planet carrier 124, the second reduction sun gear 121 is connected with the first motor input shaft 221, the second reduction ring gear 123 is connected with the second motor input shaft 222, the second reduction planet gear 122 is respectively engaged with the second reduction sun gear 121 and the second reduction ring gear 123, the second reduction planet gear 122 is supported on the second reduction planet carrier 124 through a bearing, and one end of the second reduction planet carrier 124 is fixed on the housing 9.
Example 4
As shown in fig. 4, embodiment 4 of the present invention is a preferred embodiment of embodiment 1, and differs from embodiment 1 in that: specifically, the axis of motor 21 with the axis parallel arrangement of input shaft 11, the output of motor 21 is provided with drive wheel 13, be provided with driven wheel 14 on the input shaft 11, drive wheel 13 with through chain, belt or gear connection between the driven wheel 14.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.

Claims (9)

1. A hybrid system, characterized by comprising an engine (1), a motor assembly (2), a planetary gear mechanism (3) and a shift actuator (4), wherein the shift actuator (4) comprises a first clutch (41), a second clutch (42), a third clutch (43) and a fourth clutch (44);
the engine (1) is connected with the driving end of the first clutch (41), the driven end of the second clutch (42) and the driving end of the fourth clutch (44) into a whole through an input shaft (11), the motor assembly (2) comprises a motor (21) and a motor input shaft (22), one end of the motor input shaft (22) is connected with the motor (21), the other end of the motor input shaft (22) is respectively connected with the driven end of the third clutch (43) and the driven end of the fourth clutch (44), the driving end of the third clutch (43) is connected with the large sun gear (31) of the planetary gear mechanism (3) through a first connecting shaft (5), and the driving end of the second clutch (42) is connected with the small sun gear (32) of the planetary gear mechanism (3) through a second connecting shaft (6), the planetary gear mechanism (3) combines the power of the engine (1) and the power of the motor component (2) to realize power output of different driving modes and different gears;
the motor input shaft (22) comprises a first motor input shaft (221) and a second motor input shaft (222), a first planetary reduction mechanism (10) is arranged between the first motor input shaft (221) and the second motor input shaft (222), the first planetary reduction mechanism (10) comprises a first reduction sun gear (101), a first reduction planet gear (102) and a first reduction gear ring (103), the first reduction sun gear (101) is connected with the first motor input shaft (221), the first reduction planet gear (102) is supported on the second motor input shaft (222) through a bearing, and the first reduction planet gear (102) is meshed with the first reduction sun gear (101) and the first reduction gear ring (103) respectively.
2. A hybrid powertrain according to claim 1, characterised in that the shift actuator (4) further comprises a first brake clutch (45), a second brake clutch (46) and a one-way brake (47),
the first brake clutch (45) is arranged on the outer side of the first connecting shaft (5) and used for braking the first connecting shaft (5) and the large sun gear (31) connected with the first connecting shaft, one ends of the second brake clutch (46) and the one-way brake (47) are connected with the planet carrier (35), and the other ends of the second brake clutch (46) and the one-way brake (47) are fixed on the shell (9).
3. A hybrid system according to claim 1, characterized in that the planetary gear mechanism (3) further comprises a pinion gear (33), a long gear (34), a planet carrier (35) and a ring gear (36);
the pinion (33) is supported on the carrier (35) by a bearing, the pinion (33) meshing with the pinion sun gear (32) and the long gear (34);
the long gear (34) is supported on the planet carrier (35) through a bearing, one end of the long gear (34) is internally meshed with the gear ring (36), and the other end of the long gear (34) is meshed with the large sun gear (31) and the small gear (33);
one end of the planet carrier (35) supports the pinion (33) and the long gear (34), and the other end of the planet carrier (35) is connected with the driven ends of the first clutch (41), the second brake clutch (46) and the one-way brake (47) respectively.
4. A hybrid system according to claim 3, characterized in that the hybrid system further comprises an output gear (8), the ring gear (36) being connected to the output gear (8) via an output shaft (7).
5. A hybrid system according to claim 1 wherein the different modes implemented by the hybrid system include an engine drive mode, a motor drive mode and a split drive mode for a total of seven speed power output.
6. A hybrid system according to claim 1, wherein said first reduction ring gear (103) of said first planetary reduction mechanism (10) is fixed to a housing (9), said first planetary reduction mechanism (10) being adapted to increase a motor drive torque and increase a motor rotation speed.
7. A hybrid system, characterized by comprising an engine (1), a motor assembly (2), a planetary gear mechanism (3) and a shift actuator (4), wherein the shift actuator (4) comprises a first clutch (41), a second clutch (42), a third clutch (43) and a fourth clutch (44);
the engine (1) is connected with the driving end of the first clutch (41), the driven end of the second clutch (42) and the driving end of the fourth clutch (44) into a whole through an input shaft (11), the motor assembly (2) comprises a motor (21) and a motor input shaft (22), one end of the motor input shaft (22) is connected with the motor (21), the other end of the motor input shaft (22) is respectively connected with the driven end of the third clutch (43) and the driven end of the fourth clutch (44), the driving end of the third clutch (43) is connected with the large sun gear (31) of the planetary gear mechanism (3) through a first connecting shaft (5), and the driving end of the second clutch (42) is connected with the small sun gear (32) of the planetary gear mechanism (3) through a second connecting shaft (6), the planetary gear mechanism (3) combines the power of the engine (1) and the power of the motor component (2) to realize power output of different driving modes and different gears;
the motor input shaft (22) comprises a first motor input shaft (221) and a second motor input shaft (222), a second planetary reduction mechanism (12) is arranged between the first motor input shaft (221) and the second motor input shaft (222), the second planetary reduction mechanism (12) comprises a second reduction sun gear (121), a second reduction planet gear (122), a second reduction gear ring (123) and a second reduction planet carrier (124),
the second reduction sun gear (121) is connected with the first motor input shaft (221), the second reduction gear ring (123) is connected with the second motor input shaft (222), the second reduction planetary gear (122) is meshed with the second reduction sun gear (121) and the second reduction gear ring (123), the second reduction planetary gear (122) is supported on the second reduction planet carrier (124) through a bearing, and one end of the second reduction planet carrier (124) is fixed on the shell (9).
8. A hybrid system according to claim 7, characterized in that the axis of the motor (21) is parallel to the axis of the input shaft (11), the output end of the motor (21) is provided with a driving wheel (13), the input shaft (11) is provided with a driven wheel (14), and the driving wheel (13) and the driven wheel (14) are connected through a chain, a belt or a gear.
9. An automobile comprising a body, a chassis and the hybrid system of any one of claims 1-8, wherein the hybrid system is disposed on the chassis.
CN202010139327.2A 2020-03-03 2020-03-03 Hybrid power system and automobile Active CN111409441B (en)

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