CN201501287U - Power transmission unit used for hybrid power system of vehicle - Google Patents
Power transmission unit used for hybrid power system of vehicle Download PDFInfo
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- CN201501287U CN201501287U CN2009200764965U CN200920076496U CN201501287U CN 201501287 U CN201501287 U CN 201501287U CN 2009200764965 U CN2009200764965 U CN 2009200764965U CN 200920076496 U CN200920076496 U CN 200920076496U CN 201501287 U CN201501287 U CN 201501287U
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Abstract
The utility model provides a power transmission unit used for a hybrid power system of a vehicle, which is characterized in that a clutch is respectively connected with one end of an integrated start-up generator output shaft and one end of a main driving motor output shaft, a planetary gear reducer is arranged at the other end of the main driving motor output shaft, and a main reducer is arranged on the main driving motor output shaft and between the planetary gear reducer and the clutch. A clutch cover assembly of the clutch is arranged by facing to one side of an integrated start-up generator. The power transmission unit of the utility model adopts compact design and integrated technology for fabrication, and can be matched with an internal structure of an electric driving unit, thereby greatly simplifying the fabrication technology and the assembly process of a hybrid powered vehicle. Furthermore, the power transmission unit can more fully utilize space between the internal clutch of the electric driving unit and the integrated start-up generator under the situation of not changing the clutch performance of the clutch and lead the internal structure of the electric driving unit to be more compact.
Description
Technical field
The utility model relates to hybrid vehicle, and especially the hybrid electric drive system of plug-in hybrid-power automobile is specifically related to the power transmission unit in the hybrid electric drive system.
Background technology
Become today that auto trade develops main flow in energy-conservation and environmental protection, hybrid vehicle has become the key core technology that various countries automobile vendor greatly develops.Wherein, the plug-in hybrid solution as except that pure oil-efficient hybrid power solution electronic, is just praised highly by all big enterprises.Plug-in hybrid mainly is made up of driving engine and one or two motor of a relatively little discharge capacity, wherein motor is responsible under middle low speed realizing that pure electric-powered output and braking energy reclaim generally speaking, and realizes that when needed engine starting and driving engine generate electricity by motor where necessary or participate in function such as power driven.
In the prior art, mainly contain following several connecting method between driving engine in the above-mentioned plug-in hybrid drive system and the motor:
One, tandem plan, the Chev Volt hybrid power concept car of releasing as General Motors Coporation belongs to the plug-in hybrid car, be Plug-in Hybrid Electric Vehicle, can use household outlet (for example 110V/220V power supply) to battery charge in the hybrid electric drive system, plug-in hybrid-power automobile has longer pure motor driving mileage than full blended electric power automobile, when battery was in low electric weight, driving engine will start to generate electricity provided power for vehicle.But the driving engine of this automobile is not participated in work directly, and the engine driven generators generating could drive main drive motor during the length distance travel behind twice ac-dc conversion, and the work efficiency of engine power output is on the low side; For guaranteeing car load acceleration/grade climbing performance, the main drive motor and the power of battery require higher in addition, and corresponding auto cost is had relatively high expectations.
Two, scheme in parallel, the Phaeton GP2 hybrid vehicle as Volkswagen Automotive Co., Ltd releases connects one by two power-transfer clutchs between the driving engine of this car and the traditional change speed gear box and drives the generating all-in-one.This hybrid vehicle design plan is simple in structure, cost is low, but because the bulk of automotive interior drive system requires greatly, usually only be applicable to Oversize vehicle or rear-guard vehicle, and it is little usually should to drive one motor horsepower output, and the rideability of car load is difficult to guarantee during the pure motorized motions of automobile.
Three, connection in series-parallel power division method, the Advanced Hybrid System of ToyotaHybrid System that releases as Toyota Motor Corporation rep. (application reference number is 200480019795.5 the denomination of invention Chinese patent application for " power output apparatus for hybrid vehicle ") and AM General company (application reference number is 200480038070.0 the denomination of invention Chinese patent application for " hybrid electro-mechanical transmission with double mode compound allocation model of four fixed drive ratio "), all adopt driving engine to be connected by one or more planetary gear systems with two motors, utilization power division (Power Split) principle realize that power is coordinated and speed change to satisfy the car load demand of travelling, but this method power transmission path complexity exists unnecessary mechanical energy to be converted to electric energy is converted to that mechanical energy drives output again and the phenomenon that causes the transmission of power loss.Therefore, adopt this method to be used for the reduction that plug-in hybrid-power automobile will cause the pure electric travelled distance of hybrid vehicle.
The F3DM type hybrid vehicle that Biyadi Co Ltd releases has adopted relatively simple connection mode (application reference number is 200610141069.1 the denomination of invention Chinese patent application for " drive apparatus for hybrid vehicle "), driving engine with start generating all-in-one direct connection after directly be connected again by power-transfer clutch with another main motor, pass through main reduction gear then and directly be connected with the diff input shaft.This method is simple in structure, and under desirable operating mode, transmission of power is direct, and transmission efficiency is higher.But drive under the driving cycle at the pure electricity of automobile, because main reduction gear direct drive vehicle, be difficult to take into account slope, acceleration capability and the design requirement of aspect such as high electronic speed of operation, usually must adopt the high pulling torque high-speed electric expreess locomotive, the corresponding raising of the power electronic that matches with it (electronic) controller with the battery system functional requirement, nonetheless, also being difficult to the assurance motor under the operating mode of city works between higher efficiency area through being everlasting.In addition, need change under the situation of motor/driving engine mixed running when the energy content of battery is low, because the restriction of driving engine minimum steady speed and torque characteristics, under a lot of driving conditions, as when facing middle low speed urban traffic situation and crossing sloping road conditions, driving engine can only participate in work as aforementioned series system, greatly reduce energy utilization efficiency.
The utility model content
Can't be at the prior art medium power by the defective of efficiently utilizing and the power transmission unit overall volume is also bigger, the purpose of this utility model is by resetting of the power transmission unit inner structure of hybrid electric drive system being provided a kind of power transmission unit of simple in structure, high-efficiency compact.
According to an aspect of the present utility model, a kind of power transmission unit that is used for hybrid power system for automobile is provided, comprise power-transfer clutch, withdrawal bearing, integrated starter-generator output shaft, the main drive motor output shaft, epicyclic reduction gear unit and main gear down device, it is characterized in that, described power-transfer clutch is connected with an end of described integrated starter-generator output shaft and described main drive motor output shaft respectively, the other end of described main drive motor output shaft is provided with epicyclic reduction gear unit, on described main drive motor output shaft, be provided with main gear down device between described epicyclic reduction gear unit and the described power-transfer clutch.Preferably, the clutch cover and plate assembly of described power-transfer clutch is towards integrated starter-generator one side setting.
The power transmission unit that the utility model provides has been taked design unlike the prior art, adopts densification design and integrated technology to make, and each power transmission component in the hybrid electric drive system is combined; And power transmission unit cooperates the electric drive unit inner structure to make integrated starter-generator, main drive motor as propulsion source can be installed to easily on the described power transmission unit to form the hybrid electric drive system electric drive unit, has therefore simplified the manufacture craft and the fitting process of hybrid vehicle greatly.
As another advantage of the present utility model, the layout of the power-transfer clutch in the described power transmission unit is opposite with the power-transfer clutch arrangement of conventional truck, promptly preferably clutch cover and plate assembly being faced integrated starter-generator direction is provided with, thereby under the situation that does not change the clutch on-off performance, utilized the space between electric drive unit internal clutch and the integrated starter-generator more fully, the layout that helps the power-transfer clutch inner member makes the electric drive unit inner structure compact more.
As another advantage of the present utility model, power transmits the component preferentially adopts flexible Flywheel disc that integrated starter-generator output shaft is connected with driving engine, can improve the startup and the steady behaviour in service of driving engine in the hybrid electric drive system.Simultaneously, the hybrid electric vehicle engine of application power transmission unit that the utility model provides can be cancelled the engine flywheel in the traditional handicraft.The utility model makes the rotary inertia of integrated starting rotor frame, integrated starting motor output shaft and clutch driven disc be equivalent to the rotary inertia of substituted conventional engines flywheel by design, does not change electric drive unit and engine operation performance.It is tightr that the cancellation engine flywheel makes that electric drive unit is connected with driving engine, the overall volume of having dwindled hybrid power system.
According to another aspect of the present utility model, a kind of hybrid power system that is used for vehicle also is provided, at least comprise driving engine, integrated starter-generator and main drive motor, also comprise described driving engine, the power transmission of integrated starter-generator and main drive motor is to the power transmission unit of wheel, wherein, described power transmission unit comprises power-transfer clutch, withdrawal bearing, integrated starter-generator output shaft, the main drive motor output shaft, epicyclic reduction gear unit and main gear down device, it is characterized in that, described power-transfer clutch is connected with an end of described integrated starter-generator output shaft and described main drive motor output shaft respectively, the other end of described main drive motor output shaft is provided with epicyclic reduction gear unit, on described main drive motor output shaft, be provided with main gear down device between described epicyclic reduction gear unit and the described power-transfer clutch.
Description of drawings
By reading the detailed description of non-limiting example being done with reference to the following drawings, it is more obvious that other features, objects and advantages of the present utility model will become:
Fig. 1 illustrates according to a specific embodiment of the present utility model, the applied structural representation that is used for the hybrid electric drive system of automobile of the power transmission unit that the utility model provides;
Fig. 2 illustrates according to first embodiment of the present utility model, the structural representation of the power transmission unit of hybrid electric drive system;
Fig. 3 illustrates according to first embodiment of the present utility model, the annexation scheme drawing of power-transfer clutch in the electric drive unit of hybrid electric drive system and miscellaneous part;
Fig. 4 illustrates according to second embodiment of utility model, and the position of clutch cover and plate assembly and integrated starter-generator concerns scheme drawing;
Fig. 5 illustrates epicyclic reduction gear unit structural representation that the utility model power transmission unit adopts according to first embodiment of the present utility model, the structural representation of the main gear down device that power transmission unit shown in Figure 2 adopted;
Fig. 6 illustrates according to first embodiment of the present utility model, the structural representation of the epicyclic reduction gear unit that power transmission unit shown in Figure 2 adopted; And
Fig. 7 illustrates according to first embodiment of the present utility model, the electric drive unit structural representation of the applied automobile hybrid power drive system of power transmission unit provided by the utility model.(all drawing reference numeral explanations: driving engine 1, integrated starter-generator 2, power-transfer clutch 3, the main deceleration adorns 5, epicyclic reduction gear unit 6, wheel 7, main drive motor controller 8, battery management system 9, battery pack 10, integrated starter-generator controller 11, main drive motor 12, withdrawal bearing 13, Flywheel disc 14, clutch cover back plate 15, clutch driven disc 16, clutch-lining 17, coupling flywheel 18, integrated starter-generator output shaft 19, main drive motor output shaft 20, diff 21, driving gear 23, driven gear 24, idle pulley 25, planetary wheel 61, sun wheel 62, external toothing 63.)
The specific embodiment
Fig. 1 illustrates according to a specific embodiment of the present utility model, the applied structural representation that is used for the hybrid electric drive system of automobile of the power transmission unit that the utility model provides.In the present embodiment, the described hybrid electric drive system that is used for automobile is a kind of hybrid electric drive system of series parallel type, this system realizes that on the architecture basics of orthodox car drive system the series parallel type of syntype drives, to realize saving manufacturing and improvement cost and to save fuel oil and the purpose of assurance car load tractive performance that detail does not repeat them here.Particularly, in the present embodiment, this hybrid electric drive system mainly comprises: the power transmission unit that wheel 7, main drive motor 12, integrated starter-generator 2, driving engine 1, main drive motor controller 8, integrated starter-generator controller 11, battery management system 9, battery pack 10 and the utility model provide etc.Particularly, the drive disk assembly between described main drive motor 12 and the integrated starter-generator 2 has been formed described power transmission unit, for example as shown in Figure 2, does not repeat them here.
Those skilled in the art understand, orthodox car generally is made up of four essential parts such as driving engine, chassis, vehicle body and electrical equipments, and the applied hybrid electric drive system that is used for automobile of the power transmission unit that the utility model provides has comprised three propulsions source (being main drive motor 12, integrated starter-generator 2 and driving engine 1) of hybrid vehicle and the part-structure of car chassis and electrical equipment, has realized the basic function of orthodox car driving engine, car chassis and electrical equipment.Particularly, 200720051645.3) and " gear system, car chassis and hybrid vehicle " (Chinese patent application number: realize that with the relevant Chinese patent application file and the prior art of car chassis described power transmission unit cooperates with miscellaneous part to constitute a complete hybrid electric drive system, does not repeat them here 200510030231.8) etc. those skilled in the art can be called " hybrid-power automobile special-use chassis " (Chinese patent application number: with reference to the utility model name.
Particularly, with reference to figure 1, described driving engine 1 is connected with the power transmission unit that the utility model provides, integrated starter-generator 2 also is connected with the power transmission unit that described the utility model provides, and described driving engine 1 is connected by described power transmission unit is coaxial with described integrated starter-generator 2.Correspondingly, described power transmission unit connects described main drive motor 12 away from an end (right side one end of power transmission unit shown in Figure 1) of power-transfer clutch.Those skilled in the art understand, Fig. 1 summarily shows the connection mode of the power transmission unit that the propulsion source of hybrid electric drive system and miscellaneous part and the utility model provide, wherein concrete annexation will be described in detail in the following embodiments, and will be for example embodiment illustrated in fig. 2.
Based on above-mentioned structure shown in Figure 1, described driving engine 1, integrated starter- generator 2 and 12 3 propulsions source of main drive motor output power to hybrid power on the wheel 7 through diff 21 by described power transmission unit.Particularly, when described power transmission unit was in double-shaft power output services state, the power of described driving engine 1, integrated starter-generator 2 and main drive motor 12 can be through described power transmission unit to wheel 7 transmission power; When described power transmission unit was in single shaft takeoff output mode of operation, the power of described main drive motor 12 can be through described power transmission unit to wheel 7 transmission power.
Based on above-mentioned elaboration, it will be appreciated by those skilled in the art that power transmission unit that the utility model provides can realize the basic function of transmission system in the car chassis of orthodox car, formed the basic structure of described transmission system; The power transmission unit that the utility model provides can also cooperate other system formed automobile chassis such as running device in the car chassis, steering system and brake system, with supporting, installation automotive engine and each parts thereof, assembly, form the moulded of automobile, and accept the power of driving engine and electrical motor, make the automobile can cruising.
With reference to figure 1, by cable connection battery management system 9 and main drive motor controller 8, main drive motor controller 8 is by cable connection and control described main drive motor 12 successively for described battery pack 10 again; Simultaneously, by cable connection battery management system 9 and integrated starter-generator controller 11, integrated starter-generator controller 11 is by cable connection and control described integrated starter-generator 2 successively for this battery pack 10; This battery pack 10 can also be connected with external power supply plug by cable, thereby utilizes external power supply that battery pack 10 is charged.It will be appreciated by those skilled in the art that described battery pack 10 under suitable situation to 2 power supplies of described main drive motor 12 and/or described integrated starter-generator, thereby make two motors work separately, and be recharged where necessary.For example, when described battery management system 9 judges that described battery pack 10 electric weight abundances can be exported electric energy, then described battery management system 9 described main drive motor controllers 8 of indication and described integrated starter-generator controller 11 are exported control, thereby make described main drive motor 12 and described integrated starter-generator 2 enter the electrical motor mode of operation.
Those skilled in the art understand, in an above-mentioned variation example embodiment illustrated in fig. 1, the described hybrid electric drive system that is used for automobile can be realized the function of serial mixed power drive system, the power-transfer clutch 3 that is described power transmission unit keeps released state, described integrated starter-generator 2 utilizes the power of driving engine 1 output to generate electricity as electrical generator, and battery pack 10 is charged; 10 pairs of described main drive motors 12 of described battery pack are powered, the electric energy outputting power that main drive motor 12 obtains from battery pack 10 as the electrical motor utilization.
Similarly, those skilled in the art understand, change in the example at another, described hybrid electric drive system also can be realized the function of parallel connection mixed power driving system, the power-transfer clutch 3 that is described power transmission unit is kept closed, 10 pairs of described main drive motors 12 of described battery pack are powered, and main drive motor 12 comes outputting power as the electrical motor utilization from the electric energy that battery pack 10 obtains; Described driving engine 1 is outputting power simultaneously, with the function of realization with main drive motor 12 powered vehicle in parallel; Under the brish acceleration situation, described integrated starter-generator 2 can be used as the electric energy outputting power that the electrical motor utilization obtains from battery pack 10, and slow down or the low speed driving situation under, integrated starter-generator 2 can be used as electrical generator and utilizes the power of driving engine 1 output to generate electricity battery pack 10 is charged.
It will be appreciated by those skilled in the art that the utility model power transmission unit can realize the hybrid power system of different connecting modes according to the description of the foregoing description under the situation that does not change connection mode, do not repeat them here.
Fig. 1 summarily shows the power transmission unit that the utility model provides and the annexation of propulsion source co-ordination, and Fig. 2 illustrates according to first embodiment of the present utility model, the structural representation of the power transmission unit of automobile hybrid power drive system.Particularly, described power transmission unit mainly comprises power-transfer clutch 3, integrated starter-generator output shaft 19, main drive motor output shaft 20, main gear down device 5 and epicyclic reduction gear unit 6.With reference to figure 2, wherein, an end of described power-transfer clutch 3 (right side shown in Figure 2 one end) connects described integrated starter-generator output shaft 19, and the other end of described power-transfer clutch 3 (left side shown in Figure 2 one end) is connected with an end of described main drive motor output shaft 20.The other end of described main drive motor output shaft 20 is provided with described epicyclic reduction gear unit 6, and by described epicyclic reduction gear unit 6, described main drive motor output shaft 20 can be connected with the main drive motor 12 (not shown among Fig. 2) on being installed in main drive motor output shaft 20.Particularly, described main drive motor output shaft 20 is connected by the pinion carrier of spline with described planetary gear speed reducing mechanism 6, and the planetary wheel 61 that makes described main drive motor output shaft 20 can drive described planetary gear speed reducing mechanism 6 when rotating revolves round the sun; Described main drive motor 12 and described main drive motor output shaft 62 coaxial connections of 20 sun wheels make described main drive motor 12 rotors to rotate synchronously with described main drive motor output shaft 20 sun wheels 62.
In the present embodiment, on described main drive motor output shaft 20, also be provided with main gear down device 5, and this main gear down device 5 is between described epicyclic reduction gear unit 6 and described power-transfer clutch 3.In the present embodiment, described main gear down device 5 is used for when running car the hybrid power of power transmission unit transmission being exported or being reclaimed the kinetic energy of automobile when automobile brake.Described main drive motor output shaft 20 can be exported power through diff 21 by described main gear down device 5 to wheel 7.Those skilled in the art understand, when using a power-driven system, the other end of described integrated starter-generator output shaft 19 connects driving engine 1 (not shown among Fig. 2), and on described integrated starter-generator output shaft 19 integrated starter-generator 2 is installed, and is for example embodiment illustrated in fig. 1.
In the present embodiment, described power-transfer clutch 3 comprises assemblies such as clutch driven disc 16 and coupling flywheel 18.Particularly, described clutch driven disc 16 is connected with the described integrated starter-generator output shaft 19 of described power transmission unit, and described coupling flywheel 18 is connected with main drive motor output shaft 20.Those skilled in the art understand, when the clutch driven disc 16 of described power-transfer clutch 3 and coupling flywheel 18 are closed, described main drive motor output shaft 20 and integrated starter-generator output shaft 19 connect by described power-transfer clutch 3, and described power transmission unit is in double-shaft power output services state.Accordingly, when the clutch driven disc 16 of described power-transfer clutch 3 and coupling flywheel 18 separate, described main drive motor output shaft 20 and integrated starter-generator output shaft 19 disconnect by described power-transfer clutch 3, and described power transmission unit is in single shaft takeoff output mode of operation.
Particularly, in the present embodiment, described epicyclic reduction gear unit 6 comprises pinion carrier and sun wheel 62, and its concrete connection mode specifically describes hereinafter, does not repeat them here.Those skilled in the art understand, the power transmits the component that the utility model provides utilizes described epicyclic reduction gear unit 6 that the power of transmission on described main drive motor output shaft 20 and the integrated starter-generator output shaft 19 is coupled, and the power of driving engine 1, integrated starter-generator 2 and main drive motor 12 transmission is realized series parallel type output.With reference to figure 2, when described power transmission unit is in double-shaft power output services state, the power of transmission can carry out the power coupling by described epicyclic reduction gear unit 6 on described main drive motor output shaft 20 and the integrated starter-generator output shaft 19, to wheel 7 transmission power; When described power transmission unit was in single shaft takeoff output mode of operation, the power of transmission can pass through described epicyclic reduction gear unit 6 direct outputting powers on the described main drive motor output shaft 20, to wheel 7 transmission power.
It will be appreciated by those skilled in the art that at described power-transfer clutch 3 and also be provided with a withdrawal bearing 13 (not shown among Fig. 2).Described withdrawal bearing 13 is as the autoclutch control executing mechanism, can carry out control commands corresponding (for example from hereinafter described electric clutch control mechanism) and control described power-transfer clutch 3 and carry out clutch work.For example, when control command indication cut-off clutch, when described Chinese style release thrust bearing 13 withdrawal bearings were worked, clutch bearing was shifted to the clutch driving disc center, clutch driving disc is pushed from clutch segment, realizes that described clutch driven disc 16 separates with coupling flywheel 18; Correspondingly, when described control command indicating closing power-transfer clutch, the spring pressure in the clutch driving disc can will push away before the platen, presses to clutch segment, make clutch segment separate, realize described clutch driven disc 16 and coupling flywheel 18 closures with withdrawal bearing.Described withdrawal bearing 13 is not shown in Figure 2, and its concrete set-up mode specifically describes hereinafter, does not repeat them here.
In the present embodiment, pass through power transmits the component, be that power-transfer clutch 3 comes described main drive motor output shaft 20 of direct connection and described integrated starter-generator output shaft 19, control the coupling of main drive motor output shaft 20 and integrated starter-generator output shaft 19 and separate by the clutch of described power-transfer clutch 3, realized the different operating state of power transmission unit.When clutch driven disc separated with flywheel, main drive motor output shaft 20 was separated with integrated starter-generator output shaft 19, and power take-off unit is only exported by main gear down device the power on the main drive motor output shaft 20 to wheel 7; When clutch driven disc and flywheel closure, main drive motor output shaft 20 is coupled with integrated starter-generator output shaft 19, and power take-off unit is exported by main gear down device main drive motor output shaft 20 and the power on the integrated starter-generator output shaft 19 simultaneously to wheel 7.
Change in the example above-mentioned Fig. 1 and one embodiment illustrated in fig. 2, described hybrid electric drive system or power transmission unit also comprise an electric clutch controller (not shown), this electric clutch controller is as clutch control, connect also and control described withdrawal bearing 13, and can analyze the driver behavior of chaufeur and the residing mode of operation of automobile and automatically control described withdrawal bearing 13 and enter released state or closure state.Those skilled in the art understand, such electric clutch control mechanism electric clutch controller is set to and the corresponding mode of operation of the mode of operation of described automobile, for example drive under the mode of operation when described automobile is in pure electricity, then described electric clutch control mechanism electric clutch controller is controlled described withdrawal bearing 13 and is in released state; For example work as described automobile again and be under the engine drive mode of operation, then described electric clutch control mechanism electric clutch controller is controlled described withdrawal bearing 13 and is in closure state.Further, those skilled in the art understand, described electric clutch control mechanism electric clutch controller guarantees that by the sliding wear of control clutch the vibration of driving system is steady, improves the NVH performance (noise reduction, vibration damping, high ride quality) of total system.Particularly, those skilled in the art can realize above-mentioned electric clutch control mechanism electric clutch controller with reference to the product of FTE company, do not repeat them here.And change in the example at one, described withdrawal bearing 13 also can be controlled by traditional mechanical pedal type clutch controller, and this does not influence flesh and blood of the present utility model, does not repeat them here.
Fig. 3 illustrates according to first embodiment of the present utility model, the power-transfer clutch 3 in the electric drive unit of hybrid electric drive system and the annexation scheme drawing of miscellaneous part.Present embodiment is an above-mentioned specific embodiment more embodiment illustrated in fig. 2, and wherein emphasis has been described the annexation of power-transfer clutch 3 with miscellaneous part.Particularly, in the present embodiment, the clutch cover and plate assembly of described power-transfer clutch 3 is towards described integrated starter-generator 2 one side settings, and those skilled in the art understand, described power-transfer clutch 3 comprises clutch driven disc 16, and has friction lining on the described clutch driven disc 16.Particularly, described clutch driven disc 16 is placed in the clutch cover and plate assembly, described clutch driven disc 16 is fixed on the described integrated startup output shaft 19, clutch driven disc 16 rotates synchronously with integrated startup output shaft 19, and described coupling flywheel 18 be arranged in parallel at described clutch driven disc 16, and when power-transfer clutch 3 closures, the friction lining of this clutch driven disc 16 contacts with described coupling flywheel 18, wherein, described coupling flywheel 18 is connected with main drive motor output shaft 20, particularly, described coupling flywheel 18 is fixed on the main drive motor output shaft 20, and coupling flywheel 18 rotates synchronously with main drive motor output shaft 20.
Further, in the present embodiment, described clutch cover back plate 15 shell shapes can cooperate integrated starter-generator 2 cylindrical cavities to be truncated conical shape, and promptly round platform bus quilt of being the curve that caves inward is clipped the circular cone of the vertex of a cone.Because the inside of described integrated starter-generator 2 is cavitys of a nearly cylindrical shape, when described clutch cover back plate 15 was designed to above-mentioned truncated conical shape, described clutch cover back plate 15 can utilize the cavity of this cylindrical shape to greatest extent.
The clutch designs that it will be appreciated by those skilled in the art that orthodox car all is that the driving disc spacing pressing of power-transfer clutch 3 is linked to each other with driving engine 1, and clutch plate links to each other with automobile gearbox.And in the embodiment that the utility model provides, described power-transfer clutch 3 is connected with driving engine 1 by integrated starter-generator 2, has in fact formed the structure that reversing sense unlike the prior art is provided with described power-transfer clutch 3.And the design plan of such reversed arrangement power-transfer clutch 3 can make full use of integrated starter-generator 2 volume inside.Such technical scheme of the present utility model is greatly improved integrated starter-generator output shaft 19 axial dimensions; And do not need to enlarge again the space between power-transfer clutch 3 and the main gear down device 5 during owing to installation power-transfer clutch 3, make the electric drive unit inner structure compact more on the whole.
Further, Fig. 4 illustrates according to second embodiment of utility model, and the position of clutch cover and plate assembly and integrated starter-generator 2 concerns scheme drawing.Present embodiment can be used as an above-mentioned variation example embodiment illustrated in fig. 3.Particularly, in the present embodiment, the part of described clutch cover and plate assembly 15 stretches into described integrated starter-generator 2, and this a part of alteration of form is cylindric.Correspondingly, the inner space of described integrated starter-generator 2 is changed to cylindric, be I shape from section-drawing, promptly the half space towards described clutch cover and plate assembly 15 is cylindric, and the radius of this cylinder is slightly larger than the radius of the column part of described clutch cover and plate assembly 15, thereby just in time make the part of described clutch cover and plate assembly 15 stretch into the inner space of described integrated starter-generator 2, specifically as shown in Figure 4.
Those skilled in the art understand, with regard to each embodiment of the present utility model, the shape of part that described clutch cover and plate assembly 15 stretches into the inner space of described integrated starter-generator 2 can change according to different needs guaranteeing that described withdrawal bearing 13 is provided with under the prerequisite in space, but preferably with the inner space of described integrated starter-generator 2 shape adapt, so that the volume minimum of the power transmission unit that the utility model provides, thereby provide greater flexibility for car load design.For example above-mentioned round table-like be preferred, and above-mentioned cylindrical shape is less preferred, does not repeat them here.
With reference to above-mentioned Fig. 2, Fig. 3 and Fig. 4, those skilled in the art understand, when hybrid power system is equipped with withdrawal bearing 13 as the clutch control actuating unit, described withdrawal bearing 13 is preferably mounted in the space that forms between clutch cover back plate 15 and the clutch cover and plate assembly, described withdrawal bearing 13 shown in above-mentioned Fig. 4.Because clutch cover back plate 15 has utilized integrated starter-generator 2 internal cavities, make withdrawal bearing 13 be placed on and just become very simple in the space that forms between clutch cover back plate 15 and the clutch cover and plate assembly, and can not influence the compact design of whole hybrid electric drive system electric drive unit.
Particularly, it will be appreciated by those skilled in the art that according to different enforcement needs, described withdrawal bearing 13 can adopt multi-form.Preferably, can be the hydraulic clutch release thrust bearing, suboptimum ground also can adopt the mechanical clutch release thrust bearing, and this does not influence flesh and blood of the present utility model, does not repeat them here.
Further, Fig. 5 illustrates according to first embodiment of the present utility model, main gear down device 5 structural representations that power transmission unit shown in Figure 2 adopted.Main gear down device 5 of the present utility model is preferably with the main gear reducer structure of idle pulley, and with reference to figure 5, the main gear down device 5 of described band idle pulley also comprises an idle pulley 25 except comprising a driving gear 23 and driven gear 24.Wherein, described main gear down device 5 is connected with main drive motor output shaft 20 by driving gear 23, particularly, the driving gear 23 of described main gear down device 5 is fixed on the main drive motor output shaft 20, and driving gear 23 rotates synchronously with described main drive motor output shaft 20.Described driving gear on perpendicular to main drive motor output shaft 20 directions by meshing with idle pulley, described idle pulley and driven gear engagement, driven gear can be connected with the shell of diff 21 again, and diff 21 is again by drive axle link to each other with wheel 7 (not shown among Fig. 5).The ability technical personnel is understood, and after present embodiment adopts the main gear reducer structure of band idle pulley, can change the takeoff output direction of power take-off unit, to cooperate the required takeoff output direction of hybrid electric drive system; And, solved because main drive motor output shaft 20 and differential axle axle base are difficult to carry out takeoff output bonded assembly technical matters more greatly owing to used driving gear 23, driven gear 24 and 25 3 gears of idle pulley.
Further, Fig. 6 illustrates according to first embodiment of the present utility model, the structural representation of the epicyclic reduction gear unit that power transmission unit shown in Figure 2 adopted.Described epicyclic reduction gear unit 6 comprises external toothing 63, pinion carrier and sun wheel 62, main drive motor output shaft 20 is connected by the pinion carrier of spline with epicyclic reduction gear unit 6, the sun wheel 62 of epicyclic reduction gear unit 6 is connected with main drive motor 12, and epicyclic reduction gear unit 6 external toothings 63 are captiveed joint with the electric drive unit shell by rectangular spline.Described epicyclic reduction gear unit 6 is coupled the power of transmission on described main drive motor output shaft 20 and the integrated starter-generator output shaft 19, and the power of driving engine 1, integrated starter-generator 2 and main drive motor 12 transmission is realized series parallel type output.Particularly, the main drive motor rotor of described main drive motor 12 is connected with the sun wheel 62 of epicyclic reduction gear unit 6, on the rear housing of electric drive unit shell, the main drive motor stator uses bolt and electric drive unit rear housing to fix to the main drive motor rotor by bearing fixing.
On the basis of the foregoing description, Fig. 7 illustrates according to first embodiment's of the present utility model, the electric drive unit structural representation of the applied automobile hybrid power drive system of power transmission unit provided by the utility model, wherein, described power transmission unit is as a component part of described electric drive unit.Particularly, described electric drive unit mainly comprises the power transmission unit that integrated starter-generator 2, main drive motor 12, diff 21 and the utility model of hybrid electric drive system provide.Particularly, described integrated starter-generator 2 is installed on the described integrated startup output shaft 19; Described main drive motor 12 is installed on the described main drive motor output shaft 20; Main drive motor output shaft 20 is connected with diff 21 by main gear down device 5, by the axle side gear outputting power of diff 21.
Further, it will be appreciated by those skilled in the art that in fact the specific embodiments after present embodiment shows power transmission unit provided by the utility model and described integrated starter-generator 2 and described main drive motor 12 are connected.In the present embodiment, described integrated starter-generator 2 is installed on the described integrated startup output shaft 19.Preferably, on described integrated startup output shaft 19, described integrated starter-generator stator uses bolt to fix with the electric drive unit front case respectively to the integrated starter-generator stator of described integrated starter-generator 2 by bearing fixing; Integrated starter-generator rotor is fixed on the integrated startup output shaft 19, rotates synchronously with integrated startup output shaft 19.When integrated starter-generator 2 during as the electrical motor outputting power, integrated starter-generator 2 outputting powers make integrated starter-generator rotor rotation, and integrated starter-generator rotor drives integrated startup output shaft 19 rotations; When integrated starter-generator 2 during as generator for electricity generation, integrated startup output shaft 19 drives integrated starter-generator rotor rotation, and integrated starter-generator 2 generates electricity.
With above-mentioned Fig. 2 or embodiment illustrated in fig. 3 similar, in the present embodiment, described power-transfer clutch 3 connects described integrated startup output shaft 19 and described main drive motor output shaft 20.For example, particularly, described clutch cover back plate 15 uses bolt and electric drive unit front case to fix.
Power transmission unit provided by the utility model is as the mechanical connection basis of automobile hybrid power drive system electric drive unit, by integrated starter-generator 2 and main drive motor 12 are installed in respectively on the integrated startup output shaft 19 and main drive motor output shaft 20 of power transmission unit, finished the integrated installation of automobile hybrid power drive system electrical machine element, make electrical machine element in the above-mentioned automobile hybrid power drive system, the electric machine control element, electrical equipments such as battery pack 10 and battery management system 9 can be that the center is arranged with the electric drive unit, help the integrated connection and the layout of automobile hybrid power drive system electrical equipment.And because driving engine 1, integrated starter-generator 2 and main drive motor 12 can both be easily and the power transmission unit connection, this power transmission unit can effectively integrate the integrated starter-generator 2 in the hybrid electric drive system, main drive motor 12 is in the same place with driving engine 1, realizes that the series parallel type takeoff output of three propulsions source connects.The utility model adopts densification design, integrated technology to make each power transmits the component in the hybrid electric drive system, reduced hybrid vehicle productive costs, simplified hybrid vehicle manufacturing process and fitting process, and made things convenient in the future that automobile carries out repair and upgrade work.
Those skilled in the art understand, power transmission unit provided by the invention adopts the high-speed planetary gear speed reduction gearing, the ingenious characteristics of utilizing planetary mechanism, realized that not only main drive motor 12 can actv. outputting power and imput power, and can realize slowing down and improve the function of specified output torque according to the transmitting ratio of epicyclic reduction gear unit.
As an improvement of the present utility model, in the present embodiment, the rotary inertia of the clutch plate 14 of rotor, rotor field spider and the power-transfer clutch 3 of described integrated starter-generator 2 can be designed equivalent conventional engines flywheel, thus cancellation conventional engines flywheel.Design of the present utility model makes the driving engine of using automobile of the present utility model can cancel engine flywheel, thus the feasible compactness more that is connected with driving engine.
As another improvement of the present utility model, described power transmits the component preferentially adopts flexibility to be connected with driving engine 1, and described integrated starter-generator output shaft 19 is connected by flexible Flywheel disc 14 with engine crankshaft.Because vibration is big during driving engine 1 work, can influence the normal operation of electric drive unit, so when integrated starter-generator output shaft 19 links to each other with engine crankshaft by flexible Flywheel disc 14, utilized the mechanical specialities of flexible Flywheel disc 14, can solve this technical matters effectively.Driving engine 1 vibration was to the influence of electric drive unit when the use of flexible Flywheel disc 14 had weakened work, improved the startup and the steady behaviour in service of driving engine 1 in the hybrid electric drive system, make whole electric drive unit can be used as an assembling integral body, the direct installation with driving engine 1 is connected, and guarantees that electric drive unit can normal operation.
More than specific embodiment of the utility model is described.It will be appreciated that the utility model is not limited to above-mentioned specific implementations, those skilled in the art can make various distortion or modification within the scope of the claims, and this does not influence flesh and blood of the present utility model.
Claims (15)
1. power transmission unit that is used for the vehicle hybrid system, be used for power transmission with power system to wheel, comprise power-transfer clutch (3), withdrawal bearing (13), integrated starter-generator output shaft (19), main drive motor output shaft (20), epicyclic reduction gear unit (6) and main gear down device (5), it is characterized in that, described power-transfer clutch (3) is connected with the end of described integrated starter-generator output shaft (19) with described main drive motor output shaft (20) respectively, the other end of described main drive motor output shaft (20) is provided with epicyclic reduction gear unit (6), on described main drive motor output shaft (20), be provided with main gear down device (5) between described epicyclic reduction gear unit (6) and the described power-transfer clutch (3).
2. power transmission unit according to claim 1 is characterized in that, the clutch cover and plate assembly of described power-transfer clutch (3) is towards integrated starter-generator (2) one side settings.
3. power transmission unit according to claim 2 is characterized in that, described withdrawal bearing (13) is placed in the space that forms between the clutch cover back plate (15) of described power-transfer clutch (3) and the described clutch cover and plate assembly.
4. power transmission unit according to claim 3 is characterized in that, the shape of the shape of described clutch cover back plate (15) and described integrated starter-generator output shaft (19) the integrated starter-generator of institute's bonded assembly (2) internal cavities adapts.
5. power transmission unit according to claim 4 is characterized in that, the shell of described clutch cover back plate (15) is truncated conical shape.
6. power transmission unit according to claim 4 is characterized in that, the cylindrical shape of shell of described clutch cover back plate (15).
7. according to each described power transmission unit in the claim 1 to 6, it is characterized in that described withdrawal bearing (13) is controlled by an electric clutch controller.
8. according to each described power transmission unit in the claim 1 to 6, it is characterized in that described withdrawal bearing (13) is the hydraulic clutch release thrust bearing.
9. according to each described power transmission unit in the claim 1 to 6, it is characterized in that described withdrawal bearing (13) is the mechanical clutch release thrust bearing.
10. according to each described power transmission unit in the claim 1 to 6, it is characterized in that described integrated starter-generator output shaft (19) is connected with engine crankshaft.
11. power transmission unit according to claim 10 is characterized in that, described integrated starter-generator output shaft (19) connects described engine crankshaft by flexible Flywheel disc (14).
12. according to each described power transmission unit in the claim 1 to 6, it is characterized in that, described main gear down device (5) comprises a driving gear (23), a driven gear (24) and an idle pulley (25), described driving gear (23) is arranged on the described main drive motor output shaft (20), and described driving gear (23) meshes with idle pulley (25) on perpendicular to main drive motor output shaft (20) direction, described idle pulley (25) and described driven gear (24) engagement.
13., it is characterized in that described epicyclic reduction gear unit (6) comprises pinion carrier and sun wheel (62) according to each described power transmission unit in the claim 1 to 6, described main drive motor output shaft (20) is connected with described pinion carrier by spline.
14. hybrid power system that is used for vehicle, at least comprise driving engine (1), integrated starter-generator (2) and main drive motor (12), also comprise described driving engine (1), the power transmission of integrated starter-generator (2) and main drive motor (12) is to the power transmission unit of wheel (7), wherein, described power transmission unit comprises power-transfer clutch (3), withdrawal bearing (13), integrated starter-generator output shaft (19), main drive motor output shaft (20), epicyclic reduction gear unit (6) and main gear down device (5), it is characterized in that, described power-transfer clutch (3) is connected with the end of described integrated starter-generator output shaft (19) with described main drive motor output shaft (20) respectively, the other end of described main drive motor output shaft (20) is provided with epicyclic reduction gear unit (6), on described main drive motor output shaft (20), be provided with main gear down device (5) between described epicyclic reduction gear unit (6) and the described power-transfer clutch (3).
15. hybrid power system according to claim 14 is characterized in that, the clutch cover and plate assembly of described power-transfer clutch (3) is towards integrated starter-generator (2) one side settings.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200764965U CN201501287U (en) | 2009-06-17 | 2009-06-17 | Power transmission unit used for hybrid power system of vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200764965U CN201501287U (en) | 2009-06-17 | 2009-06-17 | Power transmission unit used for hybrid power system of vehicle |
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| CN201501287U true CN201501287U (en) | 2010-06-09 |
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| CN2009200764965U Expired - Lifetime CN201501287U (en) | 2009-06-17 | 2009-06-17 | Power transmission unit used for hybrid power system of vehicle |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101920653A (en) * | 2009-06-17 | 2010-12-22 | 上海捷能汽车技术有限公司 | Power transmission unit and transmission control method of hybrid driving system |
| CN102463886A (en) * | 2010-11-04 | 2012-05-23 | 上海捷能汽车技术有限公司 | Hybrid power transmission system and control method thereof |
| CN102505716A (en) * | 2011-10-10 | 2012-06-20 | 潍柴动力股份有限公司 | Hybrid bulldozer and power system thereof |
| CN103863086A (en) * | 2014-04-02 | 2014-06-18 | 吉林大学 | Multi-gear driving device of hybrid power vehicle |
| US9676266B2 (en) | 2014-12-22 | 2017-06-13 | Industrial Technology Research Institute | Hybrid powertrain mechanism |
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2009
- 2009-06-17 CN CN2009200764965U patent/CN201501287U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101920653A (en) * | 2009-06-17 | 2010-12-22 | 上海捷能汽车技术有限公司 | Power transmission unit and transmission control method of hybrid driving system |
| CN101920653B (en) * | 2009-06-17 | 2015-02-18 | 上海捷能汽车技术有限公司 | Power transmission unit and transmission control method of hybrid driving system |
| CN102463886A (en) * | 2010-11-04 | 2012-05-23 | 上海捷能汽车技术有限公司 | Hybrid power transmission system and control method thereof |
| CN102463886B (en) * | 2010-11-04 | 2015-04-15 | 上海捷能汽车技术有限公司 | Hybrid power transmission system and control method thereof |
| CN102505716A (en) * | 2011-10-10 | 2012-06-20 | 潍柴动力股份有限公司 | Hybrid bulldozer and power system thereof |
| CN102505716B (en) * | 2011-10-10 | 2014-12-10 | 潍柴动力股份有限公司 | Hybrid bulldozer and power system thereof |
| CN103863086A (en) * | 2014-04-02 | 2014-06-18 | 吉林大学 | Multi-gear driving device of hybrid power vehicle |
| CN103863086B (en) * | 2014-04-02 | 2016-05-18 | 吉林大学 | The many gear drive devices of a kind of motor vehicle driven by mixed power |
| US9676266B2 (en) | 2014-12-22 | 2017-06-13 | Industrial Technology Research Institute | Hybrid powertrain mechanism |
| US10173516B2 (en) | 2014-12-22 | 2019-01-08 | Industrial Technology Research Institute | Method for controlling operating modes of a hybrid powertrain mechanism |
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Granted publication date: 20100609 |