CN113771610A - Modular electric drive transmission - Google Patents
Modular electric drive transmission Download PDFInfo
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- CN113771610A CN113771610A CN202110957450.XA CN202110957450A CN113771610A CN 113771610 A CN113771610 A CN 113771610A CN 202110957450 A CN202110957450 A CN 202110957450A CN 113771610 A CN113771610 A CN 113771610A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/36—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings
- B60K6/365—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings with the gears having orbital motion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
- B60K6/54—Transmission for changing ratio
- B60K6/547—Transmission for changing ratio the transmission being a stepped gearing
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Hybrid Electric Vehicles (AREA)
Abstract
The invention discloses a modular electric drive transmission, comprising: the front end of the first shaft assembly is connected with the internal combustion engine, and the rear end of the first shaft assembly is connected with the generator assembly; the second shaft assembly is provided with a parking assembly and is connected with the driving motor assembly; the third shaft assembly comprises a third transmission shaft, a third gear selectively meshed and connected with the first shaft assembly and constantly meshed and connected with the second shaft assembly, and a fourth gear fixed on the third transmission shaft; the fourth shaft assembly comprises a fifth gear in meshing transmission with the fourth gear and the gear of the oil pump assembly and a fourth transmission shaft connected with the wheel; and the electric control assembly is electrically connected with the generator assembly, the driving motor assembly, the parking assembly and the oil pump assembly. In the scheme of the invention, the modularized electric driving power transmission device which meets the vehicle hybrid function requirement by configuring different four shafts to connect double motors to integrate is adopted, so that the product platform application is realized, and the system application cost is reduced.
Description
Technical Field
The invention relates to the technical field of vehicles, in particular to a modular electric drive transmission device.
Background
With the tightening of oil consumption regulations and the higher acceptance of new energy products in the market, the traditional power assembly electrification becomes the inevitable choice for the future development of automobiles, and the platform electric drive system covers all platforms through an electrification technical route, so that the cost is reduced.
In the aspect of transmission system electrification, an electrically driven gearbox assembly, also called a hybrid gearbox technology, is a key technology for replacing the current mechanical hydraulic gearbox.
The dual-motor hybrid power gearbox technology does not depend on a traditional gearbox, and power distribution is performed through a coupling system to achieve cooperative work of an engine, a generator and a driving motor, so that fuel economy and power performance are improved.
International automobile enterprises develop double-motor hybrid transmission cases with different configurations and different structures to realize power distribution functions of power splitting, series-parallel connection or series-series connection. However, the structure is different greatly, the universality of parts is not considered, the cost is high, and the interchangeability is poor.
Based on the consideration, the electrification application of the transmission system must be comprehensively considered, the application of all platforms is covered, hybrid power and pure electric drive and four-wheel drive application are covered, the application of products is expanded through compact integrated design and part sharing, the application scale of the products is improved, and the application cost of the system is reduced as much as possible.
Disclosure of Invention
The invention discloses a modular electric drive transmission device, which is used for solving the problems that in the prior art, the electric drive transmission device is single in application, cannot realize platform and is too high in system application cost.
In order to solve the problems, the invention adopts the following technical scheme:
there is provided a modular electric drive transmission comprising:
the front end of the first shaft assembly is connected with the internal combustion engine through a torsional damper, and the rear end of the first shaft assembly is connected with the generator assembly;
the parking assembly is selectively arranged on the second shaft assembly and is connected with the driving motor assembly through a spline, and the driving motor assembly and the generator assembly are arranged side by side and are positioned on the same side;
a third shaft assembly including a third drive shaft disposed between the first shaft assembly and the second shaft assembly, a third gear secured to the third drive shaft and selectively meshingly connected with the first shaft assembly and in constant meshingly connected with the second shaft assembly, and a fourth gear secured to the third drive shaft;
the fourth shaft assembly comprises a fifth gear in meshing transmission with the fourth gear and the gear of the oil pump assembly, and a fourth transmission shaft which fixes the fifth gear and is connected with a wheel;
and the electric control assembly is electrically connected with the generator assembly, the driving motor assembly, the parking assembly and the oil pump assembly.
Optionally, there is one third gear, and the first shaft assembly and the second shaft assembly share one third gear.
Optionally, the first shaft assembly is of a planetary gear structure, wherein the generator assembly is connected to a sun gear of the planetary gear structure, the internal combustion engine is connected to a planet carrier of the planetary gear structure through the torsional vibration damper, a planetary ring gear of the planetary gear structure is connected to an output gear of the planetary gear structure, and the output gear is connected to the third gear.
Optionally, the first shaft assembly is of a planetary gear structure, wherein the generator assembly is connected with a sun gear of the planetary gear structure, the internal combustion engine is connected with a planetary gear ring of the planetary gear structure through the torsional damper, a planet carrier of the planetary gear structure is fixedly connected to a box of the planetary gear structure, and the first shaft assembly is disconnected from the third gear.
Optionally, the first shaft assembly is of a planetary gear structure, wherein the generator assembly is connected to a sun gear of the planetary gear structure, a planet carrier of the planetary gear structure is fixedly connected to a casing of the planetary gear structure, the internal combustion engine is connected to a planet ring gear of the planetary gear structure through the torsional vibration damper, and the planet ring gear is connected to the third gear through a first shaft assembly disengagement device of an output gear of the planetary gear structure.
Optionally, the first shaft assembly is disconnected from the generator assembly and the third gear.
Optionally, the oil pump assembly comprises a mechanical oil pump, a low oil pressure system for driving the modular electrically-driven transmission to cool and lubricate, and a high oil pressure system for controlling the disengagement device of the first shaft assembly, wherein the low oil pressure system is in meshed connection with the fifth gear through a gear of an output shaft of the mechanical oil pump, and the high oil pressure system is structurally connected with the planetary gear through a gear of the output shaft of the mechanical oil pump; alternatively, the first and second electrodes may be,
the low oil pressure system is lubricated by an additional electronic oil pump, and the high oil pressure system is structurally connected with the planetary gear through a gear of an output shaft of the mechanical oil pump.
Optionally, the first shaft assembly, the second shaft assembly, the third shaft assembly and the fourth shaft assembly are fixed in the same housing.
The technical scheme adopted by the invention can achieve the following beneficial effects:
according to the invention, through a design scheme of a module and by adjusting the specific design of the oil-electricity coupling system, three hybrid architectures of power splitting, series-parallel connection and series-parallel connection are realized under one platform architecture, the platform target of architectures with different configurations is realized in a breakthrough manner, and the aim of reducing the price of a single product can be realized.
The modularized electric driving power transmission device which is provided with different four shafts to connect double motors to integrate and realize the hybrid function requirement of the vehicle is used for realizing the product platform application, thereby reducing the system application cost;
the power split hybrid transmission, the series range-extending hybrid transmission, the series parallel hybrid transmission and the pure electric drive bridge are applied by carrying out modularized application combination on the driving motor assembly, the generator assembly, the electric control assembly, the first shaft assembly, the second shaft assembly, the third shaft assembly, the fourth shaft assembly, the oil pump assembly and the parking assembly, and through combination and sharing of parts, under optimal radial and axial size control, arrangement of a whole vehicle cabin can be better met, application of different internal combustion engines is matched, optimal different vehicle type platforms are met, application of requirements of different hybrid vehicles is achieved, system application is expanded, and system cost is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below to form a part of the present invention, and the exemplary embodiments and the description thereof illustrate the present invention and do not constitute a limitation of the present invention. In the drawings:
FIG. 1 is a schematic diagram of a parallel four-shaft dual-motor transmission disclosed by the invention;
FIG. 2 is a schematic diagram of a parallel four-axis based power splitting transmission according to the present disclosure;
FIG. 3 is a structural schematic diagram of a parallel four-axis range-extending gearbox according to the present disclosure;
FIG. 4 is a structural principle of a parallel four-axis based serial-parallel transmission disclosed by the invention;
fig. 5 shows the principle of the simplified electric drive bridge structure based on four parallel shafts.
Wherein the following reference numerals are specifically included in figures 1-5:
a generator assembly-1;
an electric control component-2;
a drive motor assembly-3;
a fourth shaft assembly-4; a fifth gear-4 a;
an oil pump assembly-5;
a wheel-6;
parking component-7;
a second shaft assembly-8; a second gear-8 a;
a third shaft assembly-9; a fourth gear-9 a; a third gear-9 b;
-an internal combustion engine-10;
a torsional damper-11;
a first shaft assembly-12; planet ring gear-12 a; planet carrier-12 b; sun gear-12 c; output gear-12 d; the first shaft assembly disengages the engagement device-12 e.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the modular electric drive transmission device of the present invention comprises a generator assembly 1, an electric control assembly 2, a driving motor assembly 3, a fourth shaft assembly 4, an oil pump assembly 5, a parking assembly 7, a second shaft assembly 8, a third shaft assembly 9 and a first shaft assembly 12, wherein the first shaft assembly 12, the second shaft assembly 8, the third shaft assembly 9 and the fourth shaft assembly 4 are arranged in parallel by meshing through gears, and power flow transmission output of different power sources is realized through meshing distribution of the gears. The first shaft assembly 12 is connected at its front end to the internal combustion engine 10 via the torsional vibration damper 11 and at its rear end to the generator assembly 1. The parking assembly 8 is arranged on the second shaft assembly 8 and is connected with the rear end driving motor assembly 3 through a spline, so that the driving motor assembly 3 and the generator assembly 1 are arranged side by side and located on the same side, and double-motor connection is realized. The third shaft assembly 9 is a countershaft assembly including a third drive shaft, a third gear 9b and a fourth gear 9a selectively engageable with the first shaft assembly 12 via the third gear 9b and in constant mesh with the second shaft assembly 8 and then in constant mesh with the fourth gear 9a and the fourth shaft assembly 4. The fourth shaft assembly 4 receives power flow from the third shaft assembly 9 through the engagement of the fifth gear 4a and the fourth gear 9a, and is then connected to the wheels 6 through a fourth drive shaft.
In this modular electric drive transmission, the generator module 1 and the drive motor module 3 are disposed on different shafts, so that the axial length of the electric drive transmission can be effectively reduced compared to the case where the generator module and the drive motor module are disposed coaxially in the related art, and the axial length of each motor module can be increased. Like this, when the biggest external diameter size of this electricity drive transmission is the same with the biggest external diameter size of overall structure when current disposes generator component 1 and driving motor subassembly 3 on the same axle, for the driving motor subassembly 3 that power torque performance and axial length correlation are great, it has bigger axial dimensions space to more be favorable to realizing the configuration of different ability, and when different platforms were used, on the basis of better matching performance prerequisite, it can obtain littleer axial dimensions space to drive transmission.
Meanwhile, the internal combustion engine 10 and the generator assembly 1 are coupled through the first shaft assembly 12, the driving motor assembly 3 is connected with the second shaft assembly 8 and then connected with the parking assembly 7, and then the driving motor assembly is connected with the third shaft assembly 9 and the fourth shaft assembly 4 and output to the wheels 6 and the oil pump assembly 5, so that the optimal configuration of the electric driving transmission device under the minimum change is ensured. Moreover, the third shaft assembly 9 extends along the second shaft assembly 8, which is beneficial to shortening the radial gear envelope, and can better obtain the most compact radial arrangement space for integrating the electric control assembly 2 and the electric drive transmission device on the premise of different platform applications. Different speed ratio configurations can be realized through four shafts, and the method is one of important preconditions that products can be shared.
Therefore, the electric drive transmission device can better meet the arrangement of the cabin of the whole automobile under the control of the optimal radial and axial dimensions, match with different internal combustion engines 10 for application, optimally meet different automobile type platforms, realize the application requirements of different hybrid power automobiles, and drive the reduction of the application cost of the electric drive transmission device. The same generator assembly 1, the electric control assembly 2, the driving motor assembly 3, the oil pump assembly 5 and the parking assembly 7 are configured, so that different hybrid power transmission system structures are achieved, and the same functional requirements of the hybrid electric vehicle are met. Through four-axis arrangement, the selection of performance such as the sharing of spare part, speed ratio through integrated the same automatically controlled subassembly 2 to reach the application of modularization electricity drive transmission system, realize more functions through the integration, and the product of more making fun, lower cost design.
To achieve the above object, the first shaft assembly 12, the second shaft assembly 8, the third shaft assembly 9 and the fourth shaft assembly 4 may be arranged in various ways, and the configuration of each assembly will be described in detail below by taking a specific embodiment as an example.
The first shaft assembly 12, the second shaft assembly 8, the third shaft assembly 9 and the fourth shaft assembly 4 are fixed in the same shell, the structure is simple and compact, and the space is saved.
The second shaft assembly 8 includes a second connecting shaft connected to the output shaft of the drive motor assembly 3 and the output shaft of the parking assembly 7, and a second gear 8a fixed to the second connecting shaft. The third shaft assembly 9 is disposed between the first shaft assembly 12 and the second shaft assembly 8, and includes a third connecting shaft extending along the output shaft of the driving motor assembly 3, and a third gear 9b and a fourth gear 9a respectively fixed on the third connecting shaft, where the third gear 9b may be a large gear with a large number of teeth (i.e. a large diameter), the fourth gear 9a may be a small gear with a small number of teeth, in a preferred example, the speed increasing ratio of the fourth gear 9a to the third gear 9b is 2.5-4: 1, and the third gear 9b is closer to the parking assembly 7 and is meshed with the second gear 8 a. The fourth shaft assembly 4 comprises a fourth connecting shaft connected with the wheel 6 and extending along the axis of the second connecting shaft, and a fifth gear 4a fixed on the fourth connecting shaft, wherein the fifth gear 4a is meshed with the fourth gear 9a and is meshed with a gear fixed on the mechanical oil pump output shaft of the oil pump assembly 5. So set up, can realize the radial gear envelope of optimum size, under the prerequisite of different platform applications, the most compact radial arrangement space of integration that obtains automatically controlled subassembly 2 and electrically drive transmission better. Moreover, the gear output based on the second shaft assembly 8, the third shaft assembly 9 and the fourth shaft assembly 4 is subjected to speed ratio configuration, the whole vehicle capacity of the driving motor assembly 3 under the condition of independent driving is considered, and the electric driving transmission device can cover different vehicle type configuration requirements.
Further, the diameter and the number of teeth of the second gear 8a are larger than those of the fourth gear 9a and smaller than or equal to those of the third gear 9b, the diameter of the fifth gear 4a is larger than those of the third gear 9b, in a preferred example, the reduction ratio of the third gear 9b to the second gear 8a is 2.5-4: 1, and the reduction ratio of the fifth gear 4a to the fourth gear 9a is 3-5: 1. The gear diameter of the output shaft of the mechanical oil pump fixed to the oil pump assembly 5 is the same as the diameter of the fourth gear 9 a. So set up, carry out the speed ratio configuration based on the gear output of second axle subassembly 8, third axle subassembly 9 and fourth axle subassembly 4, it considers the whole car ability of driving motor subassembly 3 under the condition of individual drive, guarantees that this electricity drives transmission and can cover different motorcycle type configuration requirements.
The first shaft assembly 12 is of a planetary gear configuration to which the generator assembly 1, the internal combustion engine 10, may be connected in a variety of ways. In one example, control to achieve hybrid power splitting. As shown in fig. 2, the generator module 1 is connected to a sun gear 12c of a first shaft module 12, the internal combustion engine 10 is connected to a carrier 12b of the first shaft module 12 through a torsional damper 11, a planetary gear ring 12a of the first shaft module 12 is connected to an output gear 12d of the first shaft module 12, the output gear 12d is connected to a third gear 9b, and the third gear 9b is provided in one form, and is engaged with the second output gear 12d and a second shaft module 8 to perform power output. With such arrangement, the sun gear 12c, the planet carrier 12b and the planet gear ring 12a corresponding to the first shaft assembly 12 are subjected to different speed ratios through inherent mechanical relationships, are controlled by the electric control assembly 2, so that different internal combustion engines 10 and generator assemblies 1 are matched, and different power flows are output through the output gear 12d of the first shaft assembly 12, so that the application of a power splitting system is achieved.
In a second example, for implementing series range-based power flow control. As shown in fig. 3, the generator module 1 is connected to a sun gear 12c of a first shaft module 12, the internal combustion engine 10 is connected to a planetary ring gear 12a of the first shaft module 12 via a torsional damper 11, a carrier 12b of the first shaft module 12 is fixedly connected to a case of the first shaft module 12, and the case is connected to the carrier 12 b. The first shaft assembly 12 is disconnected from the third gear 9 b. With the arrangement, the sun gear 12c, the planet carrier 12b and the planet gear ring 12a corresponding to the first shaft assembly 12 are configured with different speed ratios through the inherent mechanical relationship, so that the internal combustion engine 10 drives the engine assembly of the vehicle, and the first shaft assembly 12 only generates electricity and does not drive the range-extended power flow application through the control of the electric control assembly 2.
In a third example, for implementing power flow control based on series range extension and parallel drive. As shown in fig. 4, the generator assembly 1 is connected with the sun gear 12c of the first shaft assembly 12, the carrier 12b of the first shaft assembly 12 is fixed to the case, the internal combustion engine 10 is connected with the planetary ring gear 12a of the first shaft assembly 12 through the torsional damper 11, and the planetary ring gear 12a of the first shaft assembly 12 is connected with the third gear 9b of the third shaft assembly 9 through the first shaft assembly 12 disconnecting coupling device 12e of the output gear 12d of the first shaft assembly 12, and the third gear 9b is provided one while meshing with the first shaft assembly 12 disconnecting coupling device 12e and the second shaft assembly 8. The arrangement is that the sun gear 12c, the planet carrier 12b and the planet gear ring gear 12a of the first shaft assembly 12 are configured with different speed ratios through inherent mechanical relationship, the series range-extending power flow of the engine assembly of the internal combustion engine 10 for driving the vehicle is realized under the disconnection condition through the disconnection and connection capability of the disconnection and connection device 12e of the first shaft assembly 12, and the series range-extending power flow application and the parallel driving power flow application of the internal combustion engine 10 are realized under the control of the electric control assembly 2 and the oil pump assembly 5.
In a fourth example, as shown in fig. 5, the first shaft assembly 12 is detachably connected to the generator assembly 1, so that the first shaft assembly 12 can be removed, i.e. the first shaft assembly 12 is optimized for system integration configuration application, and an electric drive axle application is achieved.
It should be noted that, when the internal combustion engine 10 is in power flow participation in power generation of the generator assembly 1 and system driving in the hybrid mode, and power flow distribution is performed through the planet gear row, the gear ratio of the planet gear needs to be preferably considered to meet the maximum vehicle speed in the hybrid mode, the maximum vehicle speed in the pure electric mode, and optimal efficiency matching of power generation of the generator assembly 1 and the internal combustion engine 10, so as to realize modular configuration application of system integration.
Additionally, the oil pump assembly 5 contains a mechanical oil pump, a low oil pressure system to drive the modular electrically-driven transmission for cooling lubrication, and a high oil pressure system to control disengagement of the first shaft assembly from the engagement device. The low oil pressure system is meshed with the fifth gear 4a through a gear of an output shaft of the mechanical oil pump, and the high oil pressure system is structurally connected with the planetary gear through the gear of the output shaft of the mechanical oil pump. Or the low oil pressure system is lubricated by an additional electronic oil pump, and the high oil pressure system is structurally connected with the planetary gear through a gear of an output shaft of the mechanical oil pump. So set up, oil pump assembly 5's simple structure is compact, and occupation space is few.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A modular electric drive transmission, comprising:
the front end of the first shaft assembly is connected with the internal combustion engine through a torsional damper, and the rear end of the first shaft assembly is connected with the generator assembly;
the parking assembly is selectively arranged on the second shaft assembly and is connected with the driving motor assembly through a spline, and the driving motor assembly and the generator assembly are arranged side by side and are positioned on the same side;
a third shaft assembly including a third drive shaft disposed between the first shaft assembly and the second shaft assembly, a third gear secured to the third drive shaft and selectively meshingly connected with the first shaft assembly and in constant meshingly connected with the second shaft assembly, and a fourth gear secured to the third drive shaft;
the fourth shaft assembly comprises a fifth gear in meshing transmission with the fourth gear and the gear of the oil pump assembly, and a fourth transmission shaft which fixes the fifth gear and is connected with a wheel;
and the electric control assembly is electrically connected with the generator assembly, the driving motor assembly, the parking assembly and the oil pump assembly.
2. The modular electric drive transmission as set forth in claim 1 wherein said third gear is provided with one, said first shaft assembly sharing said third gear with said second shaft assembly.
3. The modular electric drive transmission as set forth in claim 2, wherein the step-up ratio of the fourth gear to the third gear is 2.5-4: 1.
4. The modular electric drive transmission as set forth in claim 3 wherein the third gear is in a 2.5-4: 1 reduction ratio with a second gear on the second shaft assembly that meshes with the third gear and the fifth gear is in a 3-5: 1 reduction ratio with the fourth gear.
5. A modular electric drive transmission according to any one of claims 2-4, characterized in that the first shaft assembly is of a planetary gear configuration, wherein the generator assembly is connected to a sun gear of the planetary gear configuration, the internal combustion engine is connected to a planet carrier of the planetary gear configuration via the torsional vibration damper, a planet ring gear of the planetary gear configuration is connected to an output gear of the planetary gear configuration, and the output gear is connected to the third gear.
6. A modular electric drive transmission according to any one of claims 1 to 4, wherein the first shaft assembly is of planetary gear configuration, wherein the generator assembly is connected to the sun gear of the planetary gear configuration, wherein the internal combustion engine is connected to the planet ring gear of the planetary gear configuration via the torsional vibration damper, wherein the planet carrier of the planetary gear configuration is fixedly connected to the casing of the planetary gear configuration, and wherein the first shaft assembly is disconnected from the third gear.
7. A modular electric drive transmission according to any one of claims 2-4, characterized in that the first shaft assembly is of a planetary gear configuration, wherein the generator assembly is connected to the sun gear of the planetary gear configuration, the planet carrier of the planetary gear configuration is fixedly connected to the casing of the planetary gear configuration, the internal combustion engine is connected to the planet ring gear of the planetary gear configuration via the torsional vibration damper, and the planet ring gear is connected to the third gear via the first shaft assembly disengagement means of the output gear of the planetary gear configuration.
8. The modular electric drive transmission of any of claims 1-4, wherein the first shaft assembly is disconnected from the generator assembly and the third gear.
9. The modular electric drive transmission of claim 7, wherein the oil pump assembly comprises a mechanical oil pump, a low oil pressure system driving the modular electric drive transmission for cooling lubrication, and a high oil pressure system controlling the disengagement of the first shaft assembly, wherein the low oil pressure system is in meshing connection with the fifth gear through a gear of the output shaft of the mechanical oil pump, and the high oil pressure system is in connection with the planetary gear arrangement through a gear of the output shaft of the mechanical oil pump; alternatively, the first and second electrodes may be,
the low oil pressure system is lubricated by an additional electronic oil pump, and the high oil pressure system is structurally connected with the planetary gear through a gear of an output shaft of the mechanical oil pump.
10. The modular electric drive transmission of any of claims 1-4, wherein the first shaft assembly, the second shaft assembly, the third shaft assembly, and the fourth shaft assembly are secured in a common housing.
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| CN202110957450.XA CN113771610A (en) | 2021-08-18 | 2021-08-18 | Modular electric drive transmission |
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| CN202110957450.XA CN113771610A (en) | 2021-08-18 | 2021-08-18 | Modular electric drive transmission |
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