CN106427547B - Vehicle hybrid power drive system and hybrid vehicle - Google Patents

Vehicle hybrid power drive system and hybrid vehicle Download PDF

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Publication number
CN106427547B
CN106427547B CN201510481427.2A CN201510481427A CN106427547B CN 106427547 B CN106427547 B CN 106427547B CN 201510481427 A CN201510481427 A CN 201510481427A CN 106427547 B CN106427547 B CN 106427547B
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seat
clutch
brake
motor
vehicle
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CN106427547A (en
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王敷玟
陈振文
张红斌
陈强
黄秀成
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Guangzhou Automobile Group Co Ltd
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Guangzhou Automobile Group Co Ltd
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Abstract

A kind of vehicle hybrid power drive system, including engine, motor, accumulator, clutch system, braking system, front-seat planetary gear mechanism, heel row planetary gear mechanism and drive shaft, front-seat planet carrier is fixedly linked with heel row sun gear, the output shaft of engine is fixedly linked with heel row planet carrier, difference speed reducer is equipped between heel row planetary gear mechanism and drive shaft, rear ring gear is connected by difference speed reducer with drive shaft, accumulator is connected to the motor, motor is connected by first clutch with front-seat gear ring, motor is connected by second clutch with front-seat sun gear, motor is connected by third clutch with the output shaft of engine, braking system brakes the component in front-seat planetary gear mechanism and heel row planetary gear mechanism.The present invention can use three clutches to realize the powershifts of different working modes, the characteristics of having double clutch concurrently and the deficiency that can make up double clutch interface well simultaneously.

Description

Vehicle hybrid power drive system and hybrid vehicle
Technical field
The present invention relates to the technical field of hybrid vehicle, especially a kind of vehicle hybrid power drive system and have The hybrid vehicle of the drive system.
Background technology
With the development of vehicle technology, people propose more and more requirements, hybrid vehicle to the performance of vehicle Because it not only has good dynamic property, maneuverability, comfortableness and security, but also oil consumption and discharge can be reduced, it is more next It is more welcomed by the people.
Hybrid vehicle refers to the vehicle that power are provided by the two or more driving units that can operate simultaneously, it according to Power independently or is jointly provided according to vehicle actual travel state selection different driving unit.Classify according to power transmission route, Hybrid vehicle can be divided into tandem, parallel and series parallel type three types, and wherein Series-Parallel HEV is in oil consumption It is preferably showed with having in terms of discharge.The different of the power coupling mode that hybrid vehicle is exported according to power source can divide again For torque coupling formula, rotating speed manifold type, tractive force manifold type and hybrid coupled formula, hybrid coupled formula is due to having torque coupling formula concurrently And the advantages of rotating speed manifold type and in fuel economy, dynamic property and operating mode switching ride comfort etc. have very big excellent Gesture.In the prior art, Series-Parallel HEV is generally required realizes rotating speed coupling by planetary gear or difference speed reducer It closes, realization torque coupling is brought by gear, magnetic field or chain.When series parallel hybrid power coupling mechanism uses planetary gear train side When case, need that at least two motors are arranged, and the coupling between multi power source could be realized by multiple single clutch.
A kind of hybrid drive device is disclosed in the patent of Publication No. CN103786564A, which includes Engine, bi-motor, compound planetary gearing, clutch and brake, front-seat sun gear are equipped with brake, preceding seniority among brothers and sisters Carrier is connect with engine power output, and preceding planet carrier is also connected by first clutch with first motor main shaft, the first electricity Owner's axis is connect with front-seat gear ring, and front-seat gear ring is connect by second clutch with rear planet carrier, rear sun gear and the second motor Main shaft connects, by rear gear ring and driving device power drive axis connection, to drive vehicle to travel.The invention is double by designing Rows of planetary gear mechanism and bi-motor are, it can be achieved that rotating speed and torque coupling solve parallel-axis type gear drive first and second Motor cannot be worked at the same time the high efficient district the problem of, solve single planetary row mechanism under high vehicle speeds pattern, generator The low problem of working efficiency.But bi-motor mixed connection formula mixed power system structure is complicated, and parts are more, and axial dimension is long, add The big difficulty of manufacture and arrangement so that cost improves.
A kind of three clutch speed changer devices and electricity of electric vehicle are disclosed in the patent of Publication No. CN 102678871A Motor-car is connect with a shelves gear, intermediate gear and third gear respectively using three clutches, and gear controller automatically controls defeated Enter axis and access different stalls by different clutches, max. speed and max. climb slope can be taken into account, power shifting can be realized, have Shift time is short, and shift quality is good, compact-sized etc. to have advantage, but the invention only cannot achieve not there are one power input interface With the power coupling of power source, pure electric vehicle or conventional truck can be only applied to.
In existing hybrid electric drive system, although simple using single motor structure parts, it can not have concurrently Rotating speed couples and torque coupling function;And more electric machine structures are used, although the conversion of multiple-working mode can be realized, mix Closing the arrangement of power-driven system and control will become complicated, pass through control mostly in more electric machine mixed power drive systems in addition The separation of multiple single clutch and brake or in conjunction with realizing that different operating modes, multiple single clutch will make fluid pressure line Become complicated and cannot realize the unbroken switching of power by forked working, response speed is slower, pattern switching smooth-going Property it is poor, influence operating mode switching quality.
Invention content
The purpose of the present invention is to provide a kind of vehicle hybrid power drive system and hybrid vehicle, the system structures Simply, vehicle can be made to be switched between multiple-working mode using single motor and three clutches of arranging in pairs or groups, and in work When operation mode switches, fast response time, operating mode switching has preferable ride comfort.
The present invention provides a kind of vehicle hybrid power drive system, including engine, motor, accumulator, clutch system, system Dynamic system, front-seat planetary gear mechanism, heel row planetary gear mechanism and drive shaft, the front row planetary gear mechanism includes front row Sun gear, front-seat planetary gear, front-seat gear ring and front-seat planet carrier, the heel row planetary gear mechanism include heel row sun gear, after Star-wheel, rear ring gear and heel row planet carrier are ranked, the front row planet carrier is fixedly linked with the heel row sun gear, described to start The output shaft of machine is fixedly linked with the heel row planet carrier, it is equipped between the heel row planetary gear mechanism and the drive shaft Difference speed reducer, the rear ring gear are connected by the difference speed reducer with the drive shaft, and power is transferred to by the drive shaft Wheel, the accumulator are connected with the motor, and the clutch system includes first clutch, second clutch and third clutch Device, the motor are connected by the first clutch with the front-seat gear ring, the motor by the second clutch and The front row sun gear is connected, and the motor is connected by the third clutch with the output shaft of the engine, the system Dynamic system brakes the component in the front-seat planetary gear mechanism and the heel row planetary gear mechanism.
Further, the braking system includes the first brake, second brake and third brake, first system Dynamic device is connected with the front-seat sun gear and is used for front-seat sun gear described in locking, the second brake and the front-seat gear ring It is connected and is used for front-seat gear ring described in locking, after the third brake is connected with the heel row planet carrier and is used for described in locking Rank carrier.
Further, the engine, the motor, the first clutch, the second clutch, the third from Clutch, the front-seat planetary gear mechanism and heel row planetary gear mechanism coaxial arrangement.
Further, the vehicle hybrid power drive system further include vehicle hybrid power drive system master controller, Clutch controller and brake monitor, the master controller controls the start and stop of the engine and the motor, described Clutch controller and the brake monitor control the combination of the clutch system and the braking system and detach respectively.
Further, the vehicle hybrid power drive system has electric-only mode, under the electric-only mode, only It is travelled by the motor-driven vehicle, vehicle has two kinds of working conditions of the first working condition and the second working condition;Locating When first working condition, the second clutch is combined with the front-seat sun gear, and the second brake will be described Front-seat gear ring locking, the third brake is by the heel row planet carrier locking;It is described when in second working condition First clutch is combined with the front-seat gear ring, and first brake will by front-seat sun gear locking, the third brake Heel row planet carrier locking.
Further, the vehicle hybrid power drive system has engine drive mode, in the engine driving Under pattern, the first clutch, the second clutch and the third clutch detach, the engine start and institute Motor stopping is stated, first brake is by front-seat sun gear locking, and the second brake is by front-seat gear ring locking.
Further, the vehicle hybrid power drive system has moment coupling combination drive pattern, in the torque It coupling under combination drive pattern, the third clutch is combined with the engine, and the engine starts with the motor, First brake is by the front-seat sun gear locking, and the second brake is by front-seat gear ring locking.
Further, the vehicle hybrid power drive system has variable speed combination drive pattern, described stepless Under speed change combination drive pattern, the engine and the motor all start, and vehicle has third working condition and the 4th work Two kinds of working conditions of state;When in the third working condition, the first clutch is combined with the front-seat gear ring, institute The first brake is stated by the front-seat sun gear locking;When in four working condition, the second clutch and institute It states front-seat sun gear to combine, the second brake is by front-seat gear ring locking.
Further, the vehicle hybrid power drive system has moment coupling combination drive charge mode, described Under moment coupling combination drive charge mode, the third clutch is combined with the engine, and first brake is by institute Front-seat sun gear locking is stated, the front-seat gear ring locking, the motor are worked in Generator Status simultaneously by the second brake And the motor-powered vehicle can be travelled extra kinetic energy and be converted into electrical energy for storage in the accumulator.
The present invention also provides a kind of hybrid vehicle, the hybrid vehicle includes provided by the present invention arbitrary One vehicle hybrid power drive system.
In conclusion hybrid electric drive system provided by the invention passes through three by Reasonable Arrangement dynamic coupling system Clutch and compound planetary gearing, cleverly together the power coupling of engine and motor, simultaneously using single motor By controlling three clutches and brakeage, you can realize the rotating speed of hybrid electric drive system and the coupling of torque, drop The low complexity of system realizes multiple-working mode, and arrange it is simple, it is compact-sized, it is light-weight, vehicle fuel is provided Economy reduces discharge, while can realize that the ride comfort of operating mode switching and response are optimal, avoid using bi-motor and Lead to that arrangement is complicated, problem of high cost, while realizing the powershift of different working modes using three clutches, have concurrently it is double from The characteristics of clutch and the deficiency that double clutch interface can be made up well.
Above description is only the general introduction of technical solution of the present invention, in order to better understand the technical means of the present invention, And can be implemented in accordance with the contents of the specification, and in order to allow the above and other objects, features and advantages of the present invention can It is clearer and more comprehensible, it is special below to lift preferred embodiment, and coordinate attached drawing, detailed description are as follows.
Description of the drawings
Fig. 1 is the structural schematic diagram of vehicle hybrid power drive system provided by the invention.
Specific implementation mode
It is of the invention to reach the technological means and effect that predetermined goal of the invention is taken further to illustrate, below in conjunction with Attached drawing and preferred embodiment, it is as follows that the present invention is described in detail.
Fig. 1 is the structural schematic diagram of vehicle hybrid power drive system provided by the invention, as shown in Figure 1, the present invention carries The vehicle hybrid power drive system of confession is connected with wheel, the drive system include engine 10, motor 20, accumulator 30, from Collaboration system 40, braking system 50, front-seat planetary gear mechanism 60, heel row planetary gear mechanism 70 and drive shaft 80.
Front-seat planetary gear mechanism 60 includes front-seat sun gear 61, front-seat planetary gear 62, front-seat gear ring 63 and preceding rows of planetary Frame 64, heel row planetary gear mechanism 70 include heel row sun gear 71, heel row planetary gear 72, rear ring gear 73 and heel row planet carrier 74.Front-seat planet carrier 64 is fixedly linked with heel row sun gear 71, output shaft and 74 stationary phase of heel row planet carrier of engine 10 Even,.Difference speed reducer 81 is equipped between heel row planetary gear mechanism 70 and drive shaft 80, rear ring gear 73 passes through train of reduction gears (figure is not marked) is connected with difference speed reducer 81, and difference speed reducer 81 is connected with drive shaft 80, and power is transferred to wheel 90 by drive shaft 80.
Clutch system 40 includes first clutch 41, second clutch 42 and third clutch 43, and motor 20 passes through first Clutch 41 is connected with front-seat gear ring 63, and motor 20 is connected by second clutch 42 with front-seat sun gear 61, and motor 20 passes through Third clutch 43 is connected with the output shaft of engine 10.Braking system 50 is to front-seat planetary gear mechanism 60 and rear rows of planetary tooth Component in wheel mechanism 70 is braked, to change the relative motion relation of all parts.The present invention is controlled by clutch system 40 Motor 20 processed and front-seat gear ring 63, front-seat sun gear 61 and engine 10 combination or detach, and it is right by braking system 50 The braking of component in front-seat planetary gear mechanism 60 and heel row planetary gear mechanism 70, can be completed mixing using single motor 20 Power-driven system switches between multiple operating modes.
Specifically, engine 10, motor 20, clutch system 40, front-seat planetary gear mechanism 60, heel row planetary gear mechanism 70 coaxial arrangements, can facilitate engine 10 and the power transmission of motor 20 and couple.Braking system 50 includes the first brake 51, second brake 52 and third brake 53, the first brake 51 is connected with front-seat sun gear 61, to the locking front row sun Wheel 61;Second brake 52 is connected with front-seat gear ring 63, to locking front row gear ring 63;Third brake 53 and heel row planet carrier 74 are connected, to locking heel row planet carrier 74.
For the ease of controlling vehicle hybrid power drive system provided by the invention, vehicle provided by the invention is mixed It further includes hybrid electric drive system master controller (not shown), clutch controller (not shown) and braking to close power-driven system Controller (not shown), hybrid electric drive system master controller can control the start and stop of engine 10, motor 20, from Hop controller, brake monitor can control the startup and closing of clutch system 40 and braking system 50 respectively.
In the present embodiment, engine 10 can be gasoline or diesel engine, and motor 20 can be permanent magnetism in outer winding The permanent magnet synchronous motor of body, clutch 41,42,43 can be cartridge type multiplate clutch, and brake 51,52,53 can be Spot-type disc brake, hydraulic frictional piece-type brake or electromagnetic brake, forward and backward rows of planetary gear mechanism 60,70 can be height Intensity, low noise, appropriate correction of the flank shape gear, difference speed reducer 81 can be open type differential speed reducer, accumulator 30 can be height Power density, high quality be higher than, charge efficiency, long-life lithium ion battery, and drive shaft 80 can be high efficiency, low vibration Constant velocity driving shaft, wheel 90 can be the good high-performance tire of low rolling resistance, low wind-dryness, handling stability.
Vehicle hybrid power drive system provided by the invention can make power-driven system have electric-only mode, start Machine drive mode, moment coupling combination drive pattern, variable speed combination drive pattern, Brake energy recovery pattern, engine The multiple-working modes such as start-up mode, moment coupling combination drive charge mode and parking charge mode, below put forward the present invention Working method of the hybrid electric drive system of confession in each operating mode is described.
Electric-only mode:When vehicle is travelled or vehicle launch, low cruise etc. make engine 10 work in relatively low speed When middle-low load, in order to avoid engine 10 is operated in inefficient area, electric-only mode can be selected at this time, only passes through motor 20 Vehicle traveling is driven, in such a mode, vehicle has two kinds of working conditions of the first working condition and the second working condition.
When hybrid electric drive system is in the first working condition, second clutch 42 is combined with front-seat sun gear 61, The power of motor 20 is transferred to front-seat sun gear 61, second brake 52 is combined with front-seat gear ring 63, and by front-seat gear ring 63 Locking, third brake 53 are combined with heel row planet carrier 74, and by 74 locking of heel row planet carrier.At this point, the power of vehicle is by electricity Power is transferred to heel row sun gear 71, heel row by machine 20 by front-seat sun gear 61, front-seat planetary gear 62 and front-seat planet carrier 64 Power is transferred to rear ring gear 73 by sun gear 71 by heel row planetary gear 72, and rear ring gear 73 is by difference speed reducer 81 by subtractive Power after speed is transferred to drive shaft 80, to drive vehicle to travel.
Assuming that in the present invention, the characteristic parameter of front-seat planetary gear mechanism 60 is K1(i.e. the number of teeth of front-seat gear ring 63 with The gear ratio of front-seat sun gear 61 is K1), formula is had according to the kinetic characteristic of planet row:
nS1+K1nR1-(1+K1)nP1=0,
Wherein:nS1For the rotating speed of front-seat sun gear 61, nR1For the rotating speed of front-seat gear ring 63, nP1For front-seat planet carrier 64 Rotating speed.
Similarly, it is assumed that the characteristic parameter of heel row planetary gear mechanism 70 is K2(i.e. the number of teeth Yu heel row of rear ring gear 73 be too The gear ratio of sun wheel 71 is K2), formula is had according to the kinetic characteristic of planet row:
nS2+K2nR2-(1+K2)nP2=0
Wherein:nS2For the rotating speed of heel row sun gear 71, nR2For the rotating speed of rear ring gear 73, nP2For heel row planet carrier 74 Rotating speed.
In the first working condition, since the rotating speed of front-seat gear ring 63 and heel row planet carrier 74 is zero, and front-seat planet carrier 64 is identical as the rotating speed of heel row sun gear 71, therefore in the first operative state, the transmission ratio of hybrid electric drive system is:(1+ K1)K2
When hybrid electric drive system is in the second working condition, first clutch 41 is combined with front-seat gear ring 63, will The power of motor 20 is transferred to front-seat gear ring 63, and the first brake 51 is combined with front-seat sun gear 61, and by front-seat sun gear 61 Locking, third brake 53 are combined with heel row planet carrier 74, and by 74 locking of heel row planet carrier, at this point, the power of drive system Heel row sun gear 71, the heel row sun are transferred to by front-seat gear ring 63, front-seat planetary gear 62 and front-seat planet carrier 64 by motor 20 Power is transferred to rear ring gear 73 by wheel 71 by heel row planetary gear 72, and rear ring gear 73 will be after subtractive speed by difference speed reducer 81 Power be transferred to drive shaft 80, to drive vehicle to travel.At this point, the transmission ratio of hybrid electric drive system is
It can be seen from the above, the action by controlling clutch system 40 and braking system 50, hybrid electric drive system can There is different transmission ratio or gear under electric-only mode, it can be to avoid being adjusted by the working speed of regulation motor 20 merely The power of vehicle, this has just taken into account the max. speed and max. climb slope of vehicle, has reduced the requirement to 20 capacity of motor.
Engine drive mode:When engine 10 is when high efficient district works, vehicle traveling is operated alone in engine 10, at this time Hybrid electric drive system can select engine drive mode, and in such a mode, three clutches 41,42,43 detach, and start Machine 10 starts and motor 20 stops, and the first brake 51 61 is combined with front row sun gear, and by 61 locking of front-seat sun gear, and second Brake 52 is combined with front-seat gear ring 63, and by 63 locking of front-seat gear ring, engine 10 by power by heel row planet carrier 74 and Heel row planetary gear 72 is transferred to rear ring gear 73, and the power after subtractive speed is transferred to drive by rear ring gear 73 by difference speed reducer 81 Moving axis 80, at this time drive system ratio be
Moment coupling combination drive pattern:When hybrid electric drive system is in moment coupling combination drive pattern, hair Motivation 10 works along optimal operation line, and insufficient power can be provided by motor 20, at this time third clutch 43 and engine 10 combine, and engine 10 starts with motor 20, and the first brake 51 is combined with front row sun gear 61, and by front-seat sun gear 61 Locking, second brake 52 are combined with front-seat gear ring 63, and by 63 locking of front-seat gear ring.At this point, motor 20 and engine 10 Power is transferred to rear ring gear 73 by heel row planet carrier 74 and heel row planetary gear 72 later by the coupling of third clutch 43, after Power after subtractive speed is transferred to drive shaft 80 by toothrow circle 73 by difference speed reducer 81, at this point, motor 20 is equivalent to ISG (Integrated Starter and Generator, starting-generating all-in-one machine), drive system ratio is in such a modeThe torque of 81 input terminal of difference speed reducer is(wherein:TeFor the torque of engine 10, TmFor The torque of motor 20, TdFor the torque of 81 input terminal of difference speed reducer).
Variable speed combination drive pattern:When the speed of vehicle changes greatly, hybrid electric drive system can be at this time It selects variable speed combination drive pattern, engine 10 and motor 20 all to start, follows speed with stabilization by regulation motor 20 10 rotating speed of engine.Under variable speed combination drive pattern, hybrid electric drive system has third working condition and the 4th Two kinds of working conditions of working condition.
When hybrid electric drive system is in third working condition, first clutch 41 is combined with front-seat gear ring 63, will The power of motor 20 is transferred to front-seat gear ring 63, and the first brake 51 is combined with front-seat sun gear 61, and by front-seat sun gear 61 Locking, the power of motor 20 pass sequentially through front-seat gear ring 63, front-seat planetary gear 62, front-seat planet carrier 64 and are transferred to heel row sun gear 71, the power of engine 10 is transferred to heel row planetary gear 72 by heel row planet carrier 74, after heel row planetary gear mechanism 70 passes through Row's sun gear 71 and heel row planetary gear 72 are transferred to rear ring gear 73, rear toothrow after coupling motor 20 with the rotating speed of engine 10 Power after subtractive speed is transferred to drive shaft 80 by circle 73 by difference speed reducer 81, and rotation speed relation has under such state(wherein noFor the rotating speed after coupling, nmFor the rotating speed of motor 20, neFor turning for engine 10 Speed).
When hybrid electric drive system is in four working conditions, second clutch 42 is combined with front-seat sun gear 61, The power of motor 20 is transferred to front-seat sun gear 61, second brake 52 is combined with front-seat gear ring 63, and by front-seat gear ring 63 Locking, at this time the power of motor 20 the heel row sun is transferred to by front-seat sun gear 61, front-seat planetary gear 62, front-seat planet carrier 64 Wheel 71, the power of engine 10 is transferred to heel row planetary gear 72 by heel row planet carrier 74, and heel row planetary gear mechanism 70 passes through Heel row sun gear 71 and heel row planetary gear 72 are transferred to rear ring gear 73, heel row after coupling motor 20 with the rotating speed of engine 10 Power after subtractive speed is transferred to drive shaft 80 by gear ring 73 by difference speed reducer 81, and rotation speed relation has under such state(wherein noFor the rotating speed after coupling, nmFor the rotating speed of motor 20, neFor turning for engine 10 Speed).
Due in third working condition and four working conditions, after hybrid electric drive system couples, drive shaft 80 have two different rotating speeds, therefore can reduce the amplitude of variation of 20 rotating speed of motor, reduce the requirement to motor 20.
Brake energy recovery pattern:When vehicle deceleration braking or descending, hybrid electric drive system can select to brake Energy recuperation mode, the closing of 10 oil-break of engine, motor 20 work in electric motor state, can convert the kinetic energy of vehicle at this time Electric energy is simultaneously stored in accumulator 30.Clutch and the same electric-only mode of brakeage at this time, but its energy transmission path It is opposite with electric-only mode.In such a mode, the recycling path of two kinds of braking energies may be implemented in hybrid electric drive system, from The transmission ratio of difference speed reducer 81 to motor is:Or
Engine start pattern:When a vehicle is started, hybrid electric drive system can select engine start pattern, this When third clutch 43 combined with engine 10, so that motor 20 is driven engine 10, realize the startup of engine 10.Cause This, the vehicle with the hybrid electric drive system can be saved by motor 20 as motor is started to start engine 10 Deactivation motor simplifies drive system.
Moment coupling combination drive charge mode:When vehicle operation is in SOC (the State of compared with underload and accumulator 30 Charge, state-of-charge) it is relatively low when, hybrid electric drive system can select moment coupling combination drive charge mode, at this time Engine 10 works on best fuel-economy curve, and third clutch 43 is combined with engine 10, and the first brake 51 is with before It arranges sun gear 61 to combine, and by 61 locking of front-seat sun gear, second brake 52 is combined with front row gear ring 63, and by front-seat gear ring 63 lockings, motor 20 work in Generator Status, vehicle can be driven to travel extra kinetic energy engine 10 and be converted into electric energy And it is stored in accumulator 30.
Parking charge mode:When the low battery of vehicle parking and accumulator 30, at the SOC in order to ensure accumulator 30 It in certain range, prevents battery capacity too low, extends the service life of accumulator 30, engine 10 is needed to drive motor 20 to electric power storage Pond 30 is charged, and parking charge mode can be used, and third clutch 43 is combined with engine 10 at this time, and each brake is divided equally From engine 10 works in best fuel-economy point and motor 20 is driven to generate electricity, and electric energy is stored in accumulator 30.
When carrying out the switching between operating mode by hybrid electric drive system, by hybrid electric drive system master control Device receives the status signal of vehicle, and carries out decision by intellectual analysis, so that it is determined that the pattern of switching.When two kinds of operating modes Between switching be not related to the switching between power source, that is, the operating mode before switching and the operating mode after switching are all by sending out When motivation 10, motor 20 or the two provide power jointly, only need to by clutch controller and brake monitor control accordingly from Clutch and brake switch over;When the switching between two kinds of operating modes is related to the switching between power source, that is, switch Preceding operating mode is compared with the operating mode after switching, when power source changes, is needed at this time in switch clutch and system While dynamic device, start the power source after switching.In this way, the power source after switching can be made to reach certain switching the when of completing Torque, can prevent in switching working mode, since the response time of power source is insufficient, and cause to rush transmission parts It hits, it is optimal to realize the ride comfort switched between operating mode and response.
The operating mode of vehicle is switched into nothing from the first working condition of electric-only mode with hybrid electric drive system For the third working condition of grade speed change combination drive pattern.When the operating mode of hybrid electric drive system is electric-only mode The first working condition when, before the handover, second clutch 42 is combined with front-seat sun gear 61, and second brake 52 is by preceding toothrow 63 lockings are enclosed, for third brake 53 by 74 locking of heel row planet carrier, the power of vehicle is defeated by front-seat sun gear 61 by motor 20 Entering, front-seat planetary gear 62 is driven to rotate, power is transferred to heel row sun gear 71 by front-seat planetary gear 62 by front-seat planet carrier 64, Power is transferred to rear ring gear 73 by heel row sun gear 71 by heel row planetary gear 72, and rear ring gear 73 will by difference speed reducer 81 Power after subtractive speed is transferred to drive shaft 80.Hybrid electric drive system master controller receives SOC signals, the vehicle of accumulator 30 Fast signal and accelerator pedal signal send out by intelligent decision and switch to stepless change by the first working condition of electric-only mode The switching command of the third working condition of fast combination drive pattern, at this time master controller by clutch controller by first clutch 41 are combined with front-seat gear ring 63, and second clutch 42 is detached with front row sun gear 61, and brake monitor is in same time control the One brake 51 detaches 61 locking of front-seat sun gear, second brake 52 with front-seat gear ring 63, and front-seat gear ring 63 is made to be detached from lock Only state, third brake 53 are detached with heel row planet carrier 74, and heel row planet carrier 74 is made to be detached from lockup state, are starting switching Meanwhile master controller starts engine 10 immediately, can thus make engine 10 switch complete when with certain torque, The deficiency due to 10 response time of engine when operating mode switches can be prevented, and causes to rush other vehicle components It hits, the ride comfort and response to realize operating mode switching are optimal.
In conclusion hybrid electric drive system provided by the invention passes through three by Reasonable Arrangement dynamic coupling system Clutch and compound planetary gearing, cleverly together the power coupling of engine and motor, simultaneously using single motor By controlling three clutches and three brakeages, you can realize the rotating speed of hybrid electric drive system and the coupling of torque It closes, reduces the complexity of system, realize multiple-working mode, and arrange simply, it is compact-sized, it is light-weight, vehicle is provided The economy of fuel oil reduces discharge, while can realize that the ride comfort of operating mode switching and response are optimal, avoids using double Motor and lead to that arrangement is complicated, problem of high cost, while realizing the powershift of different working modes using three clutches, it is simultaneous There is the characteristics of double clutch and the deficiency of double clutch interface can be made up well.
The present invention also provides a kind of hybrid vehicle, including vehicle hybrid power drive system as described above, about The other structures of the hybrid vehicle may refer to the prior art, and details are not described herein.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, though So the present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention, any technology people for being familiar with this profession Member, without departing from the scope of the present invention, when the technology contents using the disclosure above make a little change or modification For the equivalent embodiment of equivalent variations, as long as be without departing from technical solution of the present invention content, it is right according to the technical essence of the invention Any simple modification, equivalent change and modification made by above example, in the range of still falling within technical solution of the present invention.

Claims (10)

1. a kind of vehicle hybrid power drive system, it is characterised in that:Including engine (10), motor (20), accumulator (30), Clutch system (40), braking system (50), front-seat planetary gear mechanism (60), heel row planetary gear mechanism (70) and drive shaft (80), the front-seat planetary gear mechanism (60) include front-seat sun gear (61), front-seat planetary gear (62), front-seat gear ring (63) and Front-seat planet carrier (64), the heel row planetary gear mechanism (70) include heel row sun gear (71), heel row planetary gear (72), heel row Gear ring (73) and heel row planet carrier (74), the front row planet carrier (64) is fixedly linked with the heel row sun gear (71), described The output shaft of engine (10) is fixedly linked with the heel row planet carrier (74), the heel row planetary gear mechanism (70) with it is described Difference speed reducer (81) is equipped between drive shaft (80), the rear ring gear (73) passes through the difference speed reducer (81) and the driving Axis (80) is connected, and power is transferred to wheel (90), the accumulator (30) and the motor (20) phase by the drive shaft (80) Even, the clutch system (40) includes first clutch (41), second clutch (42) and third clutch (43), the motor (20) it is connected with the front-seat gear ring (63) by the first clutch (41), the motor (20) passes through second clutch Device (42) is connected with the front-seat sun gear (61), and the motor (20) passes through the third clutch (43) and the engine (10) output shaft is connected, and the braking system (50) is to the front-seat planetary gear mechanism (60) and the heel row planetary gear Component in mechanism (70) is braked.
2. vehicle hybrid power drive system according to claim 1, it is characterised in that:The braking system (50) includes First brake (51), second brake (52) and third brake (53), first brake (51) and the front row are too Sun wheel (61) is connected and for front-seat sun gear (61) described in locking, the second brake (52) and the front-seat gear ring (63) It is connected and is used for front-seat gear ring (63) described in locking, the third brake (53) is connected with the heel row planet carrier (74) is used in combination Heel row planet carrier (74) described in locking.
3. vehicle hybrid power drive system according to claim 1, it is characterised in that:It is the engine (10), described Motor (20), the first clutch (41), the second clutch (42), the third clutch (43), the preceding seniority among brothers and sisters Star gear mechanism (60) and the heel row planetary gear mechanism (70) coaxial arrangement.
4. vehicle hybrid power drive system according to claim 1, it is characterised in that:The vehicle hybrid driving System further includes vehicle hybrid power drive system master controller, clutch controller and brake monitor, the master controller control Make the start and stop of the engine (10) and the motor (20), the clutch controller and brake monitor difference It controls the combination of the clutch system (40) and the braking system (50) and detaches.
5. vehicle hybrid power drive system according to claim 2, it is characterised in that:The vehicle hybrid driving System has electric-only mode, under the electric-only mode, only drives vehicle traveling, vehicle to have by the motor (20) Two kinds of working conditions of first working condition and the second working condition;When in first working condition, second clutch Device (42) is combined with the front-seat sun gear (61), and the second brake (52) is described by described front-seat gear ring (63) locking Third brake (53) is by heel row planet carrier (74) locking;When in second working condition, first clutch Device (41) is combined with the front-seat gear ring (63), and first brake (51) is by front-seat sun gear (61) locking, the third Brake (53) is by heel row planet carrier (74) locking.
6. vehicle hybrid power drive system according to claim 2, it is characterised in that:The vehicle hybrid driving System has engine (10) drive mode, the first clutch (41), described under the engine (10) drive mode Second clutch (42) and the third clutch (43) detach, and the engine (10) starts and the motor (20) stops Only, front-seat gear ring (63) are locked front-seat sun gear (61) locking, the second brake (52) by first brake (51) Only.
7. vehicle hybrid power drive system according to claim 2, it is characterised in that:The vehicle hybrid driving System has moment coupling combination drive pattern, under the moment coupling combination drive pattern, the third clutch (43) It is combined with the engine (10), the engine (10) starts with the motor (20), and first brake (51) will Described front row sun gear (61) locking, the second brake (52) is by front-seat gear ring (63) locking.
8. vehicle hybrid power drive system according to claim 2, it is characterised in that:The vehicle hybrid driving System has variable speed combination drive pattern, under the variable speed combination drive pattern, the engine (10) and institute It states motor (20) all to start, vehicle has two kinds of working conditions of third working condition and the 4th working condition;In described When three working conditions, the first clutch (41) combines with the front-seat gear ring (63), and first brake (51) is by institute State front-seat sun gear (61) locking;When in four working condition, the second clutch (42) and the front row are too Sun wheel (61) combines, and the second brake (52) is by front-seat gear ring (63) locking.
9. vehicle hybrid power drive system according to claim 2, it is characterised in that:The vehicle hybrid driving System have moment coupling combination drive charge mode, under the moment coupling combination drive charge mode, the third from Clutch (43) and the engine (10) combine, and first brake (51) is described by described front-seat sun gear (61) locking By described front-seat gear ring (63) locking, the motor (20) works in generator (20) state and can be with second brake (52) The engine (10) driving vehicle is travelled extra kinetic energy and is converted into electrical energy for storage in the accumulator (30).
10. a kind of hybrid vehicle, it is characterised in that:It is mixed including vehicle as in one of claimed in any of claims 1 to 9 Power-driven system.
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