CN113665344B - Dual-motor four-speed-ratio range-extended electric vehicle power assembly and electric vehicle - Google Patents

Dual-motor four-speed-ratio range-extended electric vehicle power assembly and electric vehicle Download PDF

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Publication number
CN113665344B
CN113665344B CN202110897660.4A CN202110897660A CN113665344B CN 113665344 B CN113665344 B CN 113665344B CN 202110897660 A CN202110897660 A CN 202110897660A CN 113665344 B CN113665344 B CN 113665344B
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China
Prior art keywords
gear pair
motor
speed
synchronizer
shaft
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CN202110897660.4A
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Chinese (zh)
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CN113665344A (en
Inventor
冯家任
田立红
冯海曦
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BEIJING MINGZHENG WEIYUAN MOTOR TECH Ltd
NANTONG DAREN MOTOR Inc
Original Assignee
BEIJING MINGZHENG WEIYUAN MOTOR TECH Ltd
NANTONG DAREN MOTOR Inc
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Publication of CN113665344A publication Critical patent/CN113665344A/en
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Classifications

    • 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
    • B60K6/22—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
    • B60K2006/266—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the motors or the generators with two coaxial motors or generators
    • 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
    • B60K2006/268—Electric drive motor starts the engine, i.e. used as starter motor

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Structure Of Transmissions (AREA)
  • Hybrid Electric Vehicles (AREA)

Abstract

The invention provides a double-motor four-speed-ratio range-extending electric vehicle power assembly and an electric vehicle. The motion is transmitted by mating a radial compound motor with a transmission having four gear pairs. Thus, independent four-gear motive power transmission motion is obtained, and a plurality of combinations of resultant force and transmission speed ratios of the two motors can be obtained by combining the radial compound motor with gear pairs with different numbers. The combined configuration of a plurality of motive forces and a plurality of transmission speed ratios provides an effective solution for adapting the power assembly of the invention to complex working conditions and speed per hour, and can ensure that the electric vehicle can run in a motor high-efficiency running interval for a longer time. The power assembly of the invention has compact and simple structure, and the dual-motor radial composite structure realizes multiple functions of dual-drive motors, generators, starting motors and the like.

Description

Dual-motor four-speed-ratio range-extended electric vehicle power assembly and electric vehicle
Technical Field
The invention relates to the technical field of electric automobiles, in particular to a double-motor four-speed-ratio range-extending electric automobile power assembly and an electric automobile.
Background
New energy electric vehicles become the first choice for developing vehicles because of high efficiency, energy conservation, environmental protection and emission reduction. The continuous voyage mileage of the electric vehicle is related to the efficiency of the power assembly, and the power assembly is combined and configured by a plurality of motors and a multi-speed ratio transmission, so that the electric vehicle can run in the widest high-efficiency interval under various complex running working conditions.
The configuration composition of the new energy electric vehicle power assembly directly influences the efficiency and the running cost of the whole electric vehicle, the single motor or double motors of the electric vehicle are configured to run under complex working conditions at present, particularly, the problem of high energy consumption running is solved when the vehicle runs at high speed, the electric energy consumption is increased due to low-efficiency running, the endurance mileage is reduced, and the use cost of the vehicle is increased.
Disclosure of Invention
The invention provides a double-motor four-speed-ratio range-extended electric vehicle power assembly and an electric vehicle, which are used for solving the problems of high energy consumption, short endurance mileage and high use cost of the existing electric vehicle.
The invention provides a double-motor four-speed-ratio range-extending electric vehicle power assembly, which comprises:
a housing;
the composite motor comprises a first motor and a second motor, wherein the first motor comprises a first rotor, a first stator and a first motor shaft, the first rotor is rotatably arranged in the shell, and one end of the first rotor is connected with the first motor shaft; the first motor shaft is hollow, and one end of the first motor shaft, which is far away from the first rotor, extends to the outside of the shell and is in running fit with the shell; the second motor comprises a second rotor, a second stator and a second motor shaft, the second rotor is rotatably arranged in the second stator, and the second motor is sleeved in the second rotor;
The first stator is arranged in the first rotor, and the second stator is arranged in the first stator; alternatively, the first stator is disposed outside the first rotor, and the second stator is disposed inside the first rotor;
the first transmission comprises a first input shaft, a second input shaft, an output shaft, a first gear pair, a second gear pair, a third gear pair, a fourth gear pair, a first synchronizer and a second synchronizer, wherein the second input shaft and the output shaft are respectively and rotatably connected with the shell, and the first input shaft is rotatably sleeved on the periphery of the second input shaft; the first input shaft is connected with the first motor shaft, and the second input shaft is connected with one end of the second motor shaft; the first gear pair is respectively connected with the first input shaft and the output shaft, and the second gear pair is respectively connected with the first input shaft and the output shaft; the first synchronizer is arranged between the first gear pair and the second gear pair and is connected with the first input shaft; the third gear pair is respectively connected with the second input shaft and the output shaft, and the fourth gear pair is respectively connected with the second input shaft and the output shaft; the second synchronizer is arranged between the third gear pair and the fourth gear pair and is connected with the second input shaft.
The invention provides a double-motor four-speed-ratio range-extending electric vehicle power assembly, which further comprises:
an engine;
the flywheel is connected with the rotating shaft of the engine;
and the clutch is connected with the other end of the second motor shaft and is used for coupling with or separating from the flywheel.
The invention provides a double-motor four-speed-ratio range-extending electric vehicle power assembly, which further comprises:
the second transmission comprises a transmission housing, a transmission input shaft, a transmission output shaft, a speed-increasing gear pair, a speed-reducing gear pair and a transmission synchronizer, wherein the transmission input shaft, the transmission output shaft, the speed-increasing gear pair, the speed-reducing gear pair and the transmission synchronizer are respectively arranged in the transmission housing, the transmission input shaft and the transmission output shaft are respectively connected with the transmission housing in a rotating mode, the transmission input shaft is connected with a rotating shaft of an engine, the transmission output shaft is connected with a flywheel, the speed-increasing gear pair is respectively connected with the transmission input shaft and the transmission output shaft, the speed-reducing gear pair is respectively connected with the transmission input shaft and the transmission output shaft, and the transmission synchronizer is arranged between the speed-increasing gear pair and the speed-reducing gear pair and is connected with the transmission output shaft.
The invention provides a double-motor four-speed-ratio range-extending electric vehicle power assembly, which further comprises:
and the differential mechanism is connected with the output shaft.
According to the power assembly of the dual-motor four-speed-ratio range-extending electric vehicle, which is provided by the invention, the first transmission further comprises: the first input shaft is in running fit with the shell through the first bearing and the second bearing respectively, the second input shaft is in running fit with the shell through the third bearing and the fourth bearing respectively, and the output shaft is in running fit with the shell through the fifth bearing and the sixth bearing respectively.
According to the power assembly of the double-motor four-speed-ratio range-increasing electric vehicle, the gears of the first gear pair, the gears of the second gear pair, the gears of the third gear pair and the gears of the fourth gear pair are all straight gears, helical gears or herringbone gears.
According to the power assembly of the dual-motor four-speed-ratio range-extending electric vehicle, the transmission ratios of the first gear pair, the second gear pair, the third gear pair and the fourth gear pair are different.
The invention also provides an electric automobile, which comprises an automobile main body and an electric automobile power assembly, wherein the electric automobile power assembly is the double-motor four-speed-ratio range-increasing electric automobile power assembly.
According to the power assembly of the double-motor four-speed-ratio range-extended electric vehicle, the radial compound motor and the transmission with four gear pairs are matched for transmission movement, so that independent four-gear primary power transmission movement is obtained, and multiple combinations of resultant force and transmission speed ratios of the two motors can be obtained through combination of the radial compound motor and different numbers of gear pairs. The combined configuration of a plurality of motive forces and a plurality of transmission speed ratios provides an effective solution for adapting the power assembly of the invention to complex working conditions and speed per hour, and can ensure that the electric vehicle can run in a motor high-efficiency running interval for a longer time. The power assembly of the invention has compact and simple structure, and the dual-motor radial composite structure realizes multiple functions of dual-drive motors, generators, starting motors and the like.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic side sectional view of a dual motor four speed ratio range-enhancing electric vehicle powertrain provided with a second transmission in accordance with the present invention;
FIG. 2 is a schematic diagram of a side view cross-section structure of a dual-motor four-speed-ratio range-extending electric vehicle power assembly provided by the invention when a first input shaft and a first motor shaft are integrally formed;
FIG. 3 is a schematic diagram of a side view cross-section structure of a dual-motor four-speed-ratio range-extending electric vehicle power assembly when a first input shaft and a first motor shaft are connected through a spline;
FIG. 4 is a schematic diagram of the working principle of the dual-motor four-speed-ratio range-extending electric vehicle power assembly provided by the invention;
FIG. 5 is a second schematic diagram of the working principle of the dual-motor four-speed-ratio range-extending electric vehicle power assembly provided by the invention;
FIG. 6 is a third schematic diagram of the working principle of the dual-motor four-speed-ratio range-extending electric vehicle power assembly provided by the invention;
FIG. 7 is a fourth schematic diagram of the working principle of the dual-motor four-speed-ratio range-extending electric vehicle power assembly provided by the invention;
FIG. 8 is a fifth schematic diagram of the working principle of the dual-motor four-speed-ratio range-extending electric vehicle power assembly provided by the invention;
FIG. 9 is a schematic diagram of a power assembly of a dual-motor four-speed-ratio range-extending electric vehicle according to the sixth working principle of the invention;
FIG. 10 is a schematic diagram of the operating principle of the dual-motor four-speed-ratio range-extending electric vehicle power assembly provided by the invention;
FIG. 11 is a schematic diagram of the working principle of the dual-motor four-speed-ratio range-extending electric vehicle power assembly provided by the invention;
FIG. 12 is a diagram of a dual-motor four-speed-ratio range-extending electric vehicle power assembly according to the present invention;
FIG. 13 is a schematic diagram of the working principle of the dual-motor four-speed-ratio range-extending electric vehicle power assembly provided by the invention;
FIG. 14 is a schematic diagram of the power assembly of the dual-motor four-speed-ratio range-extending electric vehicle according to the invention.
Reference numerals:
11. an engine; 12. a second transmission; 13. a flywheel; 14. a clutch; 15. a compound motor; 16. a first transmission; 17. a differential; 18. a transmission input shaft; 19. a transmission output shaft; 20. a speed increasing gear pair; 21. a reduction gear pair; 22. a transmission synchronizer; 23. a first motor; 24. a second motor; 25. a first stator; 26. a first rotor; 27. a first motor shaft; 28. a second stator; 29. a second rotor; 30. a second motor shaft; 31. a first input shaft; 32. a second input shaft; 33. an output shaft; 34. a first gear pair; 35. a second gear pair; 36. a third gear pair; 37. a fourth gear pair; 38. a first synchronizer; 39. a second synchronizer; 40. a support wall; 41. a first bearing; 42. a second bearing; 43. a third bearing; 44. a fourth bearing; 45. a fifth bearing; 46. and a sixth bearing.
Detailed Description
Embodiments of the present invention are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the invention but are not intended to limit the scope of the invention.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In describing embodiments of the present invention, it should be noted that, unless explicitly stated and limited otherwise, the terms "coupled," "coupled," and "connected" should be construed broadly, and may be either a fixed connection, a removable connection, or an integral connection, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in embodiments of the present invention will be understood in detail by those of ordinary skill in the art.
In embodiments of the invention, unless expressly specified and limited otherwise, a first feature "up" or "down" on a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," 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 embodiments of the present invention. In this specification, schematic representations of the above terms are not necessarily directed 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. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
The following describes a dual-motor four-speed-ratio range-extending electric vehicle power assembly and an electric vehicle of the invention with reference to fig. 1 to 14.
As shown in fig. 1, the dual-motor four-speed-ratio range-increasing electric vehicle power assembly comprises a shell, a compound motor 15 and a first transmission 16, wherein the compound motor 15 comprises a first motor 23 and a second motor 24, the first motor 23 comprises a first rotor 26, a first stator 25 and a first motor shaft 27, the first rotor 26 is rotatably arranged in the shell, and one end of the first rotor 26 is connected with the first motor shaft 27. The first motor shaft 27 is hollow in the interior, and one end of the first motor shaft 27 remote from the first rotor 26 extends to the outside of the housing and is in running fit with the housing. The second motor 24 includes a second rotor 29, a second stator 28, and a second motor shaft 30, the second rotor 29 is rotatably disposed in the second stator 28, and the second motor shaft 30 is sleeved in the second rotor 29. The first stator 25 is arranged in the first rotor 26, the second stator 28 is arranged in the first stator 25, an inner shell is arranged between the first stator 25 and the second stator 28, the inner shell is connected with an outer shell, the first stator 25 and the second stator 28 are respectively connected with the inner shell, the inner shell is arranged to fix the first stator 25 and the second stator 28, and the inner shell is provided with a through hole for the second motor shaft 30 to extend.
The first transmission 16 includes a first input shaft 31, a second input shaft 32, an output shaft 33, a first gear pair 34, a second gear pair 35, a third gear pair 36, a fourth gear pair 37, a first synchronizer 38, and a second synchronizer 39, the second input shaft 32 is disposed in parallel with the output shaft 33, and the second input shaft 32 and the output shaft 33 are respectively rotatably connected to the housing. The first input shaft 31 is rotatably sleeved on the outer periphery of the second input shaft 32, and the axis of the first input shaft 31 and the axis of the second input shaft 32 are in the same straight line. The first input shaft 31 is connected to the first motor shaft 27, and the second input shaft 32 is connected to one end of the second motor shaft 30. The first gear pair 34 includes two gears that are engaged with each other, one gear of the first gear pair 34 is disposed on the first input shaft 31, and the other gear of the first gear pair 34 is disposed on the output shaft 33. The second gear pair 35 includes two gears that are engaged with each other, one gear of the second gear pair 35 is provided on the first input shaft 31, and the other gear of the second gear pair 35 is provided on the output shaft 33. The first synchronizer 38 is provided between the first gear pair 34 and the second gear pair 35, and is connected to the first input shaft 31. The third gear pair 36 includes two gears that are engaged with each other, one gear of the third gear pair 36 is provided to the second input shaft 32, and the other gear of the third gear pair 36 is provided to the output shaft 33. The fourth gear pair 37 includes two gears that are engaged with each other, one gear of the fourth gear pair 37 is provided to the second input shaft 32, and the other gear of the fourth gear pair 37 is provided to the output shaft 33. The second synchronizer 39 is provided between the third gear pair 36 and the fourth gear pair 37, and is connected to the second input shaft 32.
Here, the axis of the first input shaft 31 and the axis of the first motor shaft 27 are in the same straight line, and the first input shaft 31 and the first motor shaft 27 may be connected in various manners, and may be connected by a spline or a flange.
The invention provides a double-motor four-speed-ratio range-extended electric vehicle power assembly, which is characterized in that a radial compound motor is matched with a transmission with four gear pairs to transmit motion. Thus, independent four-gear motive power transmission motion is obtained, and a plurality of combinations of resultant force and transmission speed ratios of the two motors can be obtained by combining the radial compound motor with gear pairs with different numbers. The combined configuration of a plurality of motive forces and a plurality of transmission speed ratios provides an effective solution for adapting the power assembly of the invention to complex working conditions and speed per hour, and can ensure that the electric vehicle can run in a motor high-efficiency running interval for a longer time. The power assembly of the invention has compact and simple structure, and the dual-motor radial composite structure realizes multiple functions of dual-drive motors, generators, starting motors and the like. The radial compound motor 15 is matched with a transmission with four gear pairs to transmit motion, so that independent four-gear motive power transmission motion is obtained, and a plurality of combinations of resultant force and transmission speed ratios of the two motors can be obtained through combining the radial compound motor 15 with different numbers of gear pairs. The combined configuration of a plurality of motive forces and a plurality of transmission speed ratios provides an effective solution for adapting the power assembly of the invention to complex working conditions and speed per hour, and can ensure that the electric vehicle can run in a motor high-efficiency running interval for a longer time. The power assembly of the invention has compact and simple structure, and the dual-motor radial composite structure realizes multiple functions of dual-drive motors, generators, starting motors and the like.
According to an embodiment of the present invention, as shown in fig. 2, the present embodiment is different from the previous embodiment in that the first input shaft 31 is integrally formed with the first motor shaft 27.
According to one embodiment of the present invention, as shown in fig. 3, the dual-motor four-speed-ratio range-increasing electric vehicle power assembly comprises a housing, a compound motor 15 and a first transmission 16, wherein the compound motor 15 comprises a first motor 23 and a second motor 24, the first motor 23 comprises a first rotor 26, a first stator 25 and a first motor shaft 27, the first rotor 26 is rotatably arranged in the housing, and one end of the first rotor 26 is connected with the first motor shaft 27. The first motor shaft 27 is hollow in the interior, and one end of the first motor shaft 27 remote from the first rotor 26 extends to the outside of the housing and is in running fit with the housing. The second motor 24 includes a second rotor 29, a second stator 28, and a second motor shaft 30, the second rotor 29 is rotatably disposed in the second stator 28, and the second motor shaft 30 is sleeved in the second rotor 29. The first stator 25 is disposed outside the first rotor 26, the second stator 28 is disposed in the first rotor 26, an inner housing is disposed between the first rotor 26 and the second stator 28, the inner housing is connected with an outer housing, the second stator 28 is connected with the inner housing, the inner housing is provided to fix the second stator 28, and the inner housing is provided with a through hole from which the second motor shaft 30 extends.
The first transmission 16 includes a first input shaft 31, a second input shaft 32, an output shaft 33, a first gear pair 34, a second gear pair 35, a third gear pair 36, a fourth gear pair 37, a first synchronizer 38, and a second synchronizer 39, the second input shaft 32 is disposed in parallel with the output shaft 33, and the second input shaft 32 and the output shaft 33 are respectively rotatably connected to the housing. The first input shaft 31 is rotatably sleeved on the outer periphery of the second input shaft 32, and the axis of the first input shaft 31 and the axis of the second input shaft 32 are in the same straight line. The first input shaft 31 is connected to the first motor shaft 27, and the second input shaft 32 is connected to one end of the second motor shaft 30. The first gear pair 34 includes two gears that are engaged with each other, one gear of the first gear pair 34 is disposed on the first input shaft 31, and the other gear of the first gear pair 34 is disposed on the output shaft 33. The second gear pair 35 includes two gears that are engaged with each other, one gear of the second gear pair 35 is provided on the first input shaft 31, and the other gear of the second gear pair 35 is provided on the output shaft 33. The first synchronizer 38 is provided between the first gear pair 34 and the second gear pair 35, and is connected to the first input shaft 31. The third gear pair 36 includes two gears that are engaged with each other, one gear of the third gear pair 36 is provided to the second input shaft 32, and the other gear of the third gear pair 36 is provided to the output shaft 33. The fourth gear pair 37 includes two gears that are engaged with each other, one gear of the fourth gear pair 37 is provided to the second input shaft 32, and the other gear of the fourth gear pair 37 is provided to the output shaft 33. The second synchronizer 39 is provided between the third gear pair 36 and the fourth gear pair 37, and is connected to the second input shaft 32.
Here, by disposing the second motor 24 inside the first motor 23, the first motor 23 and the second motor 24 constitute the radial compound motor 15, which is more compact than the conventional parallel motor combination, and also simplifies the structure of the power assembly. Further, the first motor 23 and the second motor 24 are coaxially arranged, the axis of the first input shaft 31 and the axis of the first motor shaft 27 are in the same straight line, the first input shaft 31 and the first motor shaft 27 are connected in various manners, and the first input shaft 31 and the first motor shaft 27 can be connected through a spline or a flange, or the first input shaft 31 and the first motor shaft 27 can be integrally formed.
According to the embodiment of the invention, the dual-motor four-speed-ratio range-extending electric vehicle power assembly further comprises an engine 11, a flywheel 13 and a clutch 14, wherein the flywheel 13 is connected with a rotating shaft of the engine 11, the clutch 14 is connected with the other end of the second motor shaft 30, and the clutch 14 is used for coupling or separating from the flywheel 13.
According to the embodiment of the invention, the dual-motor four-speed-ratio range-increasing electric vehicle power assembly further comprises a second speed changer 12, the second speed changer 12 comprises a speed changer shell, a speed changer input shaft 18, a speed changer output shaft 19, a speed increasing gear pair 20, a speed reducing gear pair 21 and a speed changer synchronizer 22 which are respectively arranged in the speed changer shell, the speed changer input shaft 18 and the speed changer output shaft 19 are respectively and rotatably connected with the speed changer shell, the speed changer input shaft 18 is connected with a rotating shaft of the engine 11, the speed changer output shaft 19 is connected with the flywheel 13, the speed increasing gear pair 20 comprises two gears, namely a first speed increasing gear and a second speed increasing gear, the number of teeth of the first speed increasing gear is larger than that of the second speed increasing gear, the first speed increasing gear is arranged on the speed changer input shaft 18, and the second speed increasing gear is arranged on the speed changer output shaft 19. The reduction gear pair 21 includes two gears, i.e., a first reduction gear and a second reduction gear, the number of teeth of the first reduction gear being smaller than the number of teeth of the second reduction gear, the first reduction gear being provided on the transmission input shaft 18, and the second reduction gear being provided on the transmission output shaft 19. The transmission synchronizer 22 is disposed between the speed increasing gear pair 20 and the speed reducing gear pair 21, that is, the transmission synchronizer 22 is disposed between the second speed increasing gear and the second speed reducing gear, and the transmission synchronizer 22 is connected with the transmission output shaft 19.
The first speed increasing gear, the second speed increasing gear, the first speed reducing gear and the second speed reducing gear are all spur gears, helical gears or herringbone gears.
According to the embodiment of the invention, the dual-motor four-speed-ratio range-extending electric vehicle power assembly further comprises a differential mechanism 17, and the differential mechanism 17 is connected with an output shaft 33.
According to the embodiment of the present invention, the first transmission 16 further includes a first bearing 41, a second bearing 42, a third bearing 43, a fourth bearing 44, a fifth bearing 45 and a sixth bearing 46, the housing is provided therein with a support wall 40, the first bearing 41 is embedded in the housing, the second bearing 42 is embedded in the support wall 40, one end of the first input shaft 31 is rotatably connected with the first bearing 41, and the other end of the first input shaft 31 is rotatably connected with the second bearing 42, thereby achieving a rotational fit of the first input shaft 31 with the housing. The third bearing 43 is embedded in the supporting wall 40, the fourth bearing 44 is embedded in the housing, and one end of the second input shaft 32 far away from the second motor shaft 30 is respectively in rotary connection with the third bearing 43 and the fourth bearing 44, so that the second input shaft 32 is in rotary fit with the housing. The fifth bearing 45 and the sixth bearing 46 are respectively embedded in the housing, one end of the output shaft 33 is rotationally connected with the fifth bearing 45, and the other end of the output shaft 33 is rotationally connected with the sixth bearing 46, so that the output shaft 33 is rotationally matched with the housing.
According to the embodiment of the present invention, the gears of the first gear pair 34, the gears of the second gear pair 35, the gears of the third gear pair 36, and the gears of the fourth gear pair 37 are all spur gears, helical gears, or herringbone gears.
According to the embodiment of the present invention, the transmission ratios of the first gear pair 34, the second gear pair 35, the third gear pair 36, and the fourth gear pair 37 are all different.
As shown in fig. 1, the dual-motor four-speed-ratio range-increasing electric vehicle power assembly comprises a shell, a composite motor 15, a first transmission 16, an engine 11, a flywheel 13, a clutch 14, a second transmission 12 and a differential 17, wherein the composite motor 15 comprises a first motor 23 and a second motor 24, the first motor 23 comprises a first rotor 26, a first stator 25 and a first motor shaft 27, the first rotor 26 is rotatably arranged in the shell, and one end of the first rotor 26 is connected with the first motor shaft 27. The first motor shaft 27 is hollow in the interior, and one end of the first motor shaft 27 remote from the first rotor 26 extends to the outside of the housing and is in running fit with the housing. The second motor 24 includes a second rotor 29, a second stator 28, and a second motor shaft 30, the second rotor 29 is rotatably disposed in the second stator 28, and the second motor shaft 30 is sleeved in the second rotor 29. The first stator 25 is arranged in the first rotor 26, the second stator 28 is arranged in the first stator 25, an inner shell is arranged between the first stator 25 and the second stator 28, the inner shell is connected with an outer shell, the first stator 25 is connected with the inner shell, the inner shell is arranged to fix the first stator 25 and the second stator 28, and the inner shell is provided with a through hole for the second motor shaft 30 to extend.
The first transmission 16 includes a first input shaft 31, a second input shaft 32, an output shaft 33, a first gear pair 34, a second gear pair 35, a third gear pair 36, a fourth gear pair 37, a first synchronizer 38, a second synchronizer 39, a first bearing 41, a second bearing 42, a third bearing 43, a fourth bearing 44, a fifth bearing 45, and a sixth bearing 46, the second input shaft 32 is disposed in parallel with the output shaft 33, and the second input shaft 32 and the output shaft 33 are respectively rotatably connected to the housing. The first input shaft 31 is rotatably sleeved on the outer periphery of the second input shaft 32, and the axis of the first input shaft 31 and the axis of the second input shaft 32 are in the same straight line. The first input shaft 31 is connected to the first motor shaft 27, and the second input shaft 32 is connected to one end of the second motor shaft 30. The first gear pair 34 includes two gears that are engaged with each other, one gear of the first gear pair 34 is disposed on the first input shaft 31, and the other gear of the first gear pair 34 is disposed on the output shaft 33. The second gear pair 35 includes two gears that are engaged with each other, one gear of the second gear pair 35 is provided on the first input shaft 31, and the other gear of the second gear pair 35 is provided on the output shaft 33. The first synchronizer 38 is provided between the first gear pair 34 and the second gear pair 35, and is connected to the first input shaft 31. The third gear pair 36 includes two gears that are engaged with each other, one gear of the third gear pair 36 is provided to the second input shaft 32, and the other gear of the third gear pair 36 is provided to the output shaft 33. The fourth gear pair 37 includes two gears that are engaged with each other, one gear of the fourth gear pair 37 is provided to the second input shaft 32, and the other gear of the fourth gear pair 37 is provided to the output shaft 33. The second synchronizer 39 is provided between the third gear pair 36 and the fourth gear pair 37, and is connected to the second input shaft 32.
The support wall 40 is arranged in the shell, the first bearing 41 is embedded in the shell, the second bearing 42 is embedded in the support wall 40, one end of the first input shaft 31 is rotatably connected with the first bearing 41, and the other end of the first input shaft 31 is rotatably connected with the second bearing 42, so that the first input shaft 31 is in rotary fit with the shell. The third bearing 43 is embedded in the supporting wall 40, the fourth bearing 44 is embedded in the housing, and one end of the second input shaft 32 far away from the second motor shaft 30 is respectively in rotary connection with the third bearing 43 and the fourth bearing 44, so that the second input shaft 32 is in rotary fit with the housing. The fifth bearing 45 and the sixth bearing 46 are respectively embedded in the housing, one end of the output shaft 33 is rotationally connected with the fifth bearing 45, and the other end of the output shaft 33 is rotationally connected with the sixth bearing 46, so that the output shaft 33 is rotationally matched with the housing.
The clutch 14 is connected to the other end of the second motor shaft 30, the clutch 14 is used for coupling with or uncoupling from the flywheel 13, and the differential 17 is connected to the output shaft 33.
The second transmission 12 includes a transmission housing, and a transmission input shaft 18, a transmission output shaft 19, a speed increasing gear pair 20, a speed decreasing gear pair 21, and a transmission synchronizer 22 which are respectively disposed in the transmission housing, the transmission input shaft 18 and the transmission output shaft 19 are respectively rotatably connected with the transmission housing, the transmission input shaft 18 is connected with a rotating shaft of the engine 11, the transmission output shaft 19 is connected with the flywheel 13, the speed increasing gear pair 20 includes two gears, i.e., a first speed increasing gear and a second speed increasing gear, the number of teeth of the first speed increasing gear is greater than the number of teeth of the second speed increasing gear, the first speed increasing gear is disposed on the transmission input shaft 18, and the second speed increasing gear is disposed on the transmission output shaft 19. The reduction gear pair 21 includes two gears, i.e., a first reduction gear and a second reduction gear, the number of teeth of the first reduction gear being smaller than the number of teeth of the second reduction gear, the first reduction gear being provided on the transmission input shaft 18, and the second reduction gear being provided on the transmission output shaft 19. The transmission synchronizer 22 is disposed between the speed increasing gear pair 20 and the speed reducing gear pair 21, that is, the transmission synchronizer 22 is disposed between the second speed increasing gear and the second speed reducing gear, and the transmission synchronizer 22 is connected with the transmission output shaft 19.
The power assembly of the double-motor four-speed-ratio range-extending electric vehicle has various working modes, and the working modes of the power assembly are more, so that the power assembly is only illustrated by a few examples and not limited by all the working modes of the power assembly. The transport motion path is indicated in each mode of operation by a dashed line, wherein the thick dashed line is one transport path and the thin dashed line is optionally another transport path.
1. As shown in fig. 4, the broken line indicates a transmission movement path, the thick broken line indicates a transmission path, the thin broken line indicates an alternative transmission path, and when the first synchronizer 38 is engaged with the first gear pair 34, the rotational motive force transmitted from the first motor 23 to the first input shaft 31 is transmitted to the output shaft 33 via the first synchronizer 38 and the first gear pair 34, and further to the differential 17. At this time, the second synchronizer 39 is not operated, and the clutch 14 is in a disengaged state.
2. As shown in fig. 5, when the first synchronizer 38 is engaged with the second gear pair 35, the rotational motive force transmitted from the first motor 23 to the first input shaft 31 is transmitted to the output shaft 33 and further to the differential 17 sequentially through the first synchronizer 38 and the second gear pair 35. At this time, the second synchronizer 39 is not operated, and the clutch 14 is in a disengaged state.
3. As shown in fig. 6, when the second synchronizer 39 is engaged with the third gear pair 36, the rotational motive force transmitted from the second motor 24 to the second input shaft 32 is transmitted to the output shaft 33, and thus to the differential 17, sequentially through the second synchronizer 39 and the third gear pair 36. At this time, the first synchronizer 38 is not operated, and the clutch 14 is in the disengaged state.
4. As shown in fig. 7, when the second synchronizer 39 is engaged with the fourth gear pair 37, the rotational motive force transmitted from the second motor 24 to the second input shaft 32 is transmitted to the output shaft 33, and further to the differential 17, sequentially through the second synchronizer 39 and the fourth gear pair 37. At this time, the first synchronizer 38 is not operated, and the clutch 14 is in the disengaged state.
5. As shown in fig. 8, while the first synchronizer 38 is engaged with the first gear pair 34, the second synchronizer 39 is engaged with the third gear pair 36, the rotational speeds of the first motor 23 and the second motor 24 are controlled so that the angular speeds of the first gear pair 34 and the third gear pair 36 acting on the output shaft 33 are the same, the output shaft 33 simultaneously transmits the rotational motive power output from the first motor 23 and the second motor 24 to the differential 17, at this time, the second gear pair 35 and the fourth gear pair 37 are not operated, and the clutch 14 is in a disengaged state.
6. As shown in fig. 9, while the first synchronizer 38 is engaged with the first gear pair 34, the second synchronizer 39 is engaged with the fourth gear pair 37, the rotational speeds of the first motor 23 and the second motor 24 are controlled so that the angular speeds of the first gear pair 34 and the fourth gear pair 37 acting on the output shaft 33 are the same, the output shaft 33 simultaneously transmits the rotational motive power output from the first motor 23 and the second motor 24 to the differential 17, at this time, the second gear pair 35 and the third gear pair 36 are not operated, and the clutch 14 is in a disengaged state.
7. As shown in fig. 10, when the first synchronizer 38 is engaged with the second gear pair 35 and the second synchronizer 39 is engaged with the third gear pair 36, the rotational speeds of the first motor 23 and the second motor 24 are controlled so that the angular speeds of the second gear pair 35 and the third gear pair 36 acting on the output shaft 33 are the same, the output shaft 33 simultaneously transmits the rotational motive power output from the first motor 23 and the second motor 24 to the differential 17, at this time, the first gear pair 34 and the fourth gear pair 37 are not operated, and the clutch 14 is in a disengaged state.
8. As shown in fig. 11, while the first synchronizer 38 is engaged with the second gear pair 35, the second synchronizer 39 is engaged with the fourth gear pair 37, the rotational speeds of the first motor 23 and the second motor 24 are controlled so that the angular speeds of the second gear pair 35 and the fourth gear pair 37 acting on the output shaft 33 are the same, the output shaft 33 simultaneously transmits the rotational motive power output from the first motor 23 and the second motor 24 to the differential 17, at this time, the first gear pair 34 and the third gear pair 36 are not operated, and the clutch 14 is in a disengaged state.
9. As shown in fig. 12, the engine 11 drives the second motor 24 to rotate for generating electricity, the transmission synchronizer 22 is meshed with the speed increasing gear pair 20, the transmission input shaft 18 transmits motion to the transmission output shaft 19, the flywheel 13 is coupled with the clutch 14 to drive the second motor shaft 30 to rotate at a high speed, the second stator 28 generates electromagnetic induction to serve as a generator for generating electricity, no external power is supplied to the second stator 28, the second synchronizer 39 does not act, and the first motor 23 can transmit motion to the differential 17 or not transmit motion.
10. As shown in fig. 13, the engine 11 transmits driving force, the transmission synchronizer 22 is meshed with the reduction gear pair 21, the flywheel 13 is coupled with the clutch 14 to drive the second motor shaft 30 and the second input shaft 32 to rotate, at this time, the second stator 28 is not electrically connected with an external power supply, the second synchronizer 39 is meshed with the third gear pair 36 or the fourth gear pair 37 respectively, the rotation motive force of the engine 11 is transmitted to the differential 17 through the output shaft 33 under the two-stage reduction torque increase of the reduction gear pair 21 and the third gear pair 36 or the fourth gear pair 37 of the first transmission 16, at this time, the first motor 23 can be not operated, or can be transmitted to the differential 17 through the first gear pair 34 or the second gear pair 35 respectively, and the rotation motive force is transmitted to the differential 17 through the output shaft 33 together with the engine 11 under the condition that the angular velocity of the transmission motive force is the same as that of the engine 11.
11. As shown in fig. 14, the second motor 24 starts the rotation of the engine 11, at this time, the second synchronizer 39 is not actuated, the clutch 14 is coupled, the transmission synchronizer 22 is engaged with the reduction gear pair 21, the second motor 24 rotates the engine 11 to a prescribed rotation speed, and the engine 11 is quickly started.
The invention provides a power assembly of a double-motor four-speed-ratio range-increasing electric vehicle, and provides a novel radial combined double-motor and four-speed-ratio transmission integrated structure of an electric vehicle and a power assembly solution of an engine and a range-increasing and speed-reducing transmission. The motion is transmitted by mating a radial compound motor with a transmission having four gear pairs. Thus, independent four-gear motive power transmission motion is obtained, and a plurality of combinations of resultant force and transmission speed ratios of the two motors can be obtained by combining the radial compound motor with gear pairs with different numbers. The combined configuration of a plurality of motive forces and a plurality of transmission speed ratios provides an effective solution for adapting the power assembly of the invention to complex working conditions and speed per hour, and can ensure that the electric vehicle can run in a motor high-efficiency running interval for a longer time. The power assembly of the invention has compact and simple structure, and the dual-motor radial composite structure realizes multiple functions of dual-drive motors, generators, starting motors and the like. The engine is combined with a single-speed-ratio transmission, so that the rated rotating speed, the power and the efficiency of the motor which serve as the two functions of generator power generation and motor driving are balanced and reasonable, the engine with relatively low power can be configured to generate power by increasing the rotating speed of the motor by means of the speed-increasing transmission ratio, and the engine can realize two-stage speed-reducing moment-increasing and double-speed ratio selection by utilizing two speed-changing mechanisms so as to achieve better and larger driving force. The compound motor is configured by taking two motors with high speed, small torque and relatively low speed and large torque as power, different combinations of motive power and speed ratios can be optimized according to the requirements of various speeds of time and road conditions for driving force in the running process of the electric automobile, and more finely divided, preferentially, reasonably and efficiently combined and distributed power is provided, so that the length of time for running the motor of the electric automobile in a high-efficiency area is increased. The power assembly can be used for a hybrid electric vehicle or a pure electric vehicle, and is singly arranged on the electric vehicle in front or behind, or a pair of power assemblies are respectively arranged in front and behind, so that the configuration cost and the running cost of the vehicle can be reduced, and the endurance mileage of the vehicle can be increased.
The invention also provides an electric automobile, which comprises an automobile main body and an electric automobile power assembly, wherein the electric automobile power assembly is the double-motor four-speed-ratio range-increasing electric automobile power assembly according to any one embodiment.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (5)

1. The utility model provides a four speed ratio of bi-motor increase journey electric motor car power assembly which characterized in that includes:
a housing;
the composite motor comprises a first motor and a second motor, wherein the first motor comprises a first rotor, a first stator and a first motor shaft, the first rotor is rotatably arranged in the shell, and one end of the first rotor is connected with the first motor shaft; the first motor shaft is hollow, and one end of the first motor shaft, which is far away from the first rotor, extends to the outside of the shell and is in running fit with the shell; the second motor comprises a second rotor, a second stator and a second motor shaft, the second rotor is rotatably arranged in the second stator, and the second motor is sleeved in the second rotor;
The first stator is arranged in the first rotor, and the second stator is arranged in the first stator; alternatively, the first stator is disposed outside the first rotor, and the second stator is disposed inside the first rotor;
the first transmission comprises a first input shaft, a second input shaft, an output shaft, a first gear pair, a second gear pair, a third gear pair, a fourth gear pair, a first synchronizer and a second synchronizer, wherein the second input shaft and the output shaft are respectively and rotatably connected with the shell, and the first input shaft is rotatably sleeved on the periphery of the second input shaft; the first input shaft is connected with the first motor shaft, and the second input shaft is connected with one end of the second motor shaft; the first gear pair is respectively connected with the first input shaft and the output shaft, and the second gear pair is respectively connected with the first input shaft and the output shaft; the first synchronizer is arranged between the first gear pair and the second gear pair and is connected with the first input shaft; the third gear pair is respectively connected with the second input shaft and the output shaft, and the fourth gear pair is respectively connected with the second input shaft and the output shaft; the second synchronizer is arranged between the third gear pair and the fourth gear pair and is connected with the second input shaft;
An engine;
the flywheel is connected with the rotating shaft of the engine;
the clutch is connected with the other end of the second motor shaft and is used for being coupled with or separated from the flywheel;
the differential mechanism is connected with the output shaft;
when the first synchronizer is meshed with the first gear pair, rotary motive power transmitted to the first input shaft by the first motor is transmitted to the output shaft and the differential through the first synchronizer and the first gear pair, and when the first synchronizer is meshed with the second gear pair, rotary motive power transmitted to the first input shaft by the first motor is transmitted to the output shaft and the differential sequentially through the first synchronizer and the second gear pair; when the second synchronizer is meshed with the fourth gear pair, the rotation motive power transmitted to the second input shaft by the second motor is transmitted to the output shaft and the differential mechanism through the second synchronizer and the third gear pair in sequence;
when the first synchronizer is meshed with the first gear pair, the second synchronizer is meshed with the third gear pair, the rotational speeds of the first motor and the second motor are controlled, so that the angular speeds of the first gear pair and the third gear pair acting on the output shaft are the same, the output shaft simultaneously transmits the rotational motive power output by the first motor and the second motor to the differential, the second gear pair and the fourth gear pair do not act, and the clutch is in a separation state;
When the first synchronizer is meshed with the first gear pair, the second synchronizer is meshed with the fourth gear pair, the rotational speeds of the first motor and the second motor are controlled, so that the angular speeds of the first gear pair and the fourth gear pair acting on the output shaft are the same, the output shaft simultaneously transmits the rotational motive power output by the first motor and the second motor to the differential, the second gear pair and the third gear pair do not act, and the clutch is in a separation state;
when the first synchronizer is meshed with the second gear pair, the second synchronizer is meshed with the third gear pair, the rotational speeds of the first motor and the second motor are controlled, so that the angular speeds of the second gear pair and the third gear pair acting on the output shaft are the same, the output shaft simultaneously transmits the rotational motive power output by the first motor and the second motor to the differential, the first gear pair and the fourth gear pair do not act, and the clutch is in a separation state;
when the first synchronizer is meshed with the second gear pair, the second synchronizer is meshed with the fourth gear pair, the rotational speeds of the first motor and the second motor are controlled, so that the angular speeds of the second gear pair and the fourth gear pair acting on the output shaft are the same, the output shaft simultaneously transmits the rotational motive power output by the first motor and the second motor to the differential, the first gear pair and the third gear pair do not act, and the clutch is in a separation state;
The engine transmits driving force, the speed changer synchronizer is meshed with the speed reducing gear pair, the flywheel is coupled with the clutch to drive the second motor shaft and the second input shaft to rotate, at the moment, the second stator is not connected with an external power supply in an electrified way, the second synchronizer is respectively meshed with the third gear pair or the fourth gear pair, and the rotation motive power of the engine is transmitted to the differential through the output shaft under the two-stage speed reduction and torque increase of the speed reducing gear pair and the third gear pair or the fourth gear pair of the first speed changer, at the moment, the first motor can not act, and can also be respectively transmitted to the differential through the first gear pair or the second gear pair to move together with the engine under the condition of the same angular speed as that of the engine transmitted to the output shaft;
the second transmission comprises a transmission housing, a transmission input shaft, a transmission output shaft, a speed-increasing gear pair, a speed-reducing gear pair and a transmission synchronizer which are respectively arranged in the transmission housing, wherein the transmission input shaft and the transmission output shaft are respectively in rotary connection with the transmission housing, the transmission input shaft is connected with a rotating shaft of the engine, the transmission output shaft is connected with the flywheel, the speed-increasing gear pair is respectively connected with the transmission input shaft and the transmission output shaft, the speed-reducing gear pair is respectively connected with the transmission input shaft and the transmission output shaft, and the transmission synchronizer is arranged between the speed-increasing gear pair and the speed-reducing gear pair and is connected with the transmission output shaft;
The engine drives the second motor to rotate for generating electricity, the speed changer synchronizer is meshed with the speed increasing gear pair, the speed changer input shaft is axially driven by the speed changer output shaft to transmit motion, the flywheel is coupled with the clutch to drive the second motor shaft to rotate at a high speed, the second stator generates electromagnetic induction to serve as a generator for generating electricity, no external power supply is supplied to the second stator at the moment, the second synchronizer does not act, and the first motor can transmit motion to the differential mechanism or does not transmit motion at the moment;
the second motor starts the engine to rotate, at the moment, the second synchronizer does not act, the clutch is coupled, the transmission synchronizer is meshed with the reduction gear pair, and the second motor drives the engine to rotate to a specified rotating speed.
2. The dual-motor four-speed range-increasing electric vehicle powertrain of claim 1, wherein the first transmission further comprises: the first input shaft is in running fit with the shell through the first bearing and the second bearing respectively, the second input shaft is in running fit with the shell through the third bearing and the fourth bearing respectively, and the output shaft is in running fit with the shell through the fifth bearing and the sixth bearing respectively.
3. The dual-motor four-speed-ratio range-extending electric vehicle power assembly of claim 1, wherein the gears of the first gear pair, the gears of the second gear pair, the gears of the third gear pair and the gears of the fourth gear pair are all spur gears, helical gears or herringbone gears.
4. The dual-motor four-speed-ratio range-extending electric vehicle powertrain of claim 1, wherein the transmission ratios of the first gear pair, the second gear pair, the third gear pair, and the fourth gear pair are all different.
5. An electric vehicle comprising a vehicle body, and further comprising an electric vehicle powertrain, the electric vehicle powertrain being a dual-motor four-speed-ratio range-extending electric vehicle powertrain as set forth in any one of claims 1 to 4.
CN202110897660.4A 2021-08-05 2021-08-05 Dual-motor four-speed-ratio range-extended electric vehicle power assembly and electric vehicle Active CN113665344B (en)

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