CN102616127A - Hybrid power transmission device of dual-mode two-stage planet wheel - Google Patents

Hybrid power transmission device of dual-mode two-stage planet wheel Download PDF

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Publication number
CN102616127A
CN102616127A CN2012100974461A CN201210097446A CN102616127A CN 102616127 A CN102616127 A CN 102616127A CN 2012100974461 A CN2012100974461 A CN 2012100974461A CN 201210097446 A CN201210097446 A CN 201210097446A CN 102616127 A CN102616127 A CN 102616127A
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China
Prior art keywords
planet row
planet
motor
satellite gear
sun wheel
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CN2012100974461A
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Chinese (zh)
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CN102616127B (en
Inventor
汪东坪
李舜酩
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Nanjing University of Aeronautics and Astronautics
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Nanjing University of Aeronautics and Astronautics
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Priority to CN201210097446.1A priority Critical patent/CN102616127B/en
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Application granted granted Critical
Publication of CN102616127B publication Critical patent/CN102616127B/en
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Abstract

The invention discloses a hybrid power transmission device of a dual-mode two-stage planet wheel. The hybrid power transmission device comprises an engine, a first motor, a second motor, a planet carrier and a differential, wherein a first planet row and a second planet row are arranged on the planet carrier, the first planet row comprises a first-stage planet wheel and a second-stage planet wheel, the second planet row also comprises the first-stage planet wheel and the second-stage planet wheel, an outer gear ring of the first planet row is connected with the engine, the second motor is connected with a sun wheel of the first planet row, and the outer gear ring of the second planet row is connected with the differential; and the first motor is connected with the planet carrier, and the planet carrier is connected with the outer gear ring of the first planet row by closing a second wet type clutch. The hybrid power transmission device of the dual-mode two-stage planet wheel can realize a variety of working modes, reduce the requirements on the rotational speed and the torque of the motors and reduce the technical requirements on the motors, and the direct effect is that the difficulty in processing and manufacturing of the motors is reduced.

Description

Bimodulus two-stage satellite gear hybrid transmissions
Technical field
The present invention relates to a kind of hybrid transmissions, especially a kind of driving device that adopts epicyclic gear transmission.
Technical background
Hybrid vehicle is as a kind of emerging energy-efficient, environment-friendly automobiles; Its technology and market are in a kind of vigorous growth stage; Pay attention to and help the hybrid vehicle industry of China; Being the development opportunity of shortening fast and world car technical merit gap, also is the important opportunity that ensures China's auto trade healthy and sustainable development.Hybrid vehicle (HEV) is compared with orthodox car and pure electric automobile, and maximum differential is a power system.For parallel connection and series parallel type HEV; Dynamic coupling system is responsible for a plurality of power pack of HEV are lumped together; Realize between multi power source reasonably power division and pass to drive axle to power; It is in critical role in the HEV exploitation, its performance is directly connected to the HEV vehicle performance and whether reaches designing requirement, is the most crucial part of HEV.Planet circular system has the characteristics of multiple degree of freedom, input and output flexible and controllable; Therefore and compact conformation, volume is little, speed ratio is big, adopted by increasing hybrid vehicle dynamic coupling system, and this also is a kind of trend of current hybrid power automobile power assembly development.
Toyota released first hybrid vehicle Prius in 1997; Released again in 2005 carry up-to-date the 3rd generation electromechanical mixing dynamic force system 2006 sections of Prius; Still adopt THS series parallel type structure; Dexterous accurate planetary gear system is redistributed the horsepower output of driving engine, reaches the purpose of rational and balanced engine load.The Prius of the Toyota hybrid transmissions constructional drawing that is shown in Figure 1, wherein 1, driving engine, 2, bent axle, 3, retarder; 4, electrical generator MG1,5, planetary gear train, 6, sun wheel, 7, satellite gear; 8, external toothing, 8a, gear ring drive sprocket, 9, pinion carrier; 10, silent chain, 11, reducing gear, 12, ring gear.13, reducing gear, 14, diff, 15a, b, drive wheels, 16, electrical motor MG2.Its hybrid power system assembly is made up of parts such as driving engine (Engine), electrical generator (MG1), electrical motor (MG2), dynamic coupling system, inverter and power accumulators.Driving engine and pinion carrier link in this mechanism, give external toothing and sun wheel through planetary wheel with transmission of power, and gear ring axle and electrical motor and transmission shaft link, sun wheel shaft and generator electric.This system is directly delivered to the most of torque of driving engine on the axle drive shaft, and electrical generator is passed in the fraction torque, and the electric energy that electrical generator sends is used for battery charge or electrical motor according to instruction, to increase propulsive effort.This structure can change it through the regulator generator rotating speed, makes driving engine be in high efficient area or Low Emission Zone always.In addition, through regulating the rotating speed of each element of planet row, it is worked as toric transmission.
This constructional feature:
1) dynamic coupling system has adopted a single planetary row three shaft transmission systems;
2) two motors are arranged in planet row's both sides;
3) adopted the chain-driving technology between planet row's output gear and the counter gear shaft;
4) because planetary wheel is realized electrodeless variable-speed, the engine speed and the speed of a motor vehicle do not have direct relation; And driving engine is a main power, and in the whole service process, driving engine provides whole energy.Therefore, the key of car load control is to seek the best efficiency point of driving engine under certain power, promptly realizes engine optimization control through the rotating speed of regulating motor M G1.
5) the exclusive gear ring of motor M G2 output shaft and planet is affixed, during pure electronic starting, only need control MG2, and system drive control realizes very simple.
The prior art shortcoming
1, motor arrangement
Two motors are arranged in planet row's both sides, and the cooling system complicated layout, the electric system integrated level is low and the planet row left and right sides, both sides transmission shaft is not isometric, are unfavorable for that front deck arranges.Motor M G1 and driving engine are arranged side by side in planet row right side; Because both distances are closer; And the optimum working temperature of MG1 be 60 ℃ less than 90 ℃ of driving engine optimum working temperatures; Therefore the MG1 housing can receive motor body heat-dissipation influence rising fast, can cause the motor cooling system often to be in the mode of operation of cooling MG1, influences car load efficient.Because the shared cover cooling system of MG1 and MG2, MG1 and MG2 are arranged in planet row's both sides, the cooling system more complicated, and integrated level is low, has brought the cost increase, and reliability is low.
2, single planet circular system reduction ratio is crossed to hang down system is impacted
(a) hybrid power system requires too high to motor performance
Hybrid power system is wide to the rotating speed of motor variation range, and is very harsh to motor accuracy of manufacture, rotating speed/torque characteristics and requirement for dynamic balance thereof.
(b) hybrid power system requires too high to spatial destribution;
In order to reach enough reduction ratios, the transmission gear deceleration system requires too high to spatial destribution, and this speed reduction gearing has adopted and comprised the multistage drive disk assembly of chain-drive, has further strengthened the complexity of system.
3, the latch functions of motor M G1 disappearance, its work efficiency descends obviously under some operating mode;
In some vehicle driving-cycle process, because the unsteady motor M G1 that caused of demand power always need be controlled at the power output that zero rotating speed fluctuates and regulates driving engine.Under this operating mode, the work efficiency of MG1 is very low, and the horsepower output of system and power demand always have some fluctuations, also has certain hysteresis quality, this all increased control on difficulty.
Summary of the invention
Technical matters:
The present invention is exactly in order to overcome above-mentioned shortcoming; Designed and developed the special-purpose bimodulus two-stage satellite gear hybrid transmissions of a cover hybrid vehicle; Realize transmission efficiently through structure design cleverly; Simultaneously can fall the requirement of the end, can realize the coupling of hybrid vehicle multi power source, realize the requirement of each item function of hybrid vehicle control rotating speed of motor and torque.
Technical scheme:
For solving the problems of the technologies described above; The technical scheme that the present invention adopts is: a kind of bimodulus two-stage satellite gear hybrid transmissions; Comprise driving engine, first motor, second motor, pinion carrier and diff; It is characterized in that: be provided with first planet row and second planet row in described pinion carrier; First order satellite gear and second stage satellite gear are drawn together in the described first planet package, and described second planet row also comprises first order satellite gear and second stage satellite gear, described first planet row's first order satellite gear and first planet row's sun wheel engagement; Described first planet row's second stage satellite gear and first planet row's external toothing engagement; Described second planet row's first order satellite gear and second planet row's sun wheel engagement, described second planet row's second stage satellite gear and second planet row's external toothing engagement, described first planet row's second stage satellite gear and described second planet row's second stage satellite gear also meshes; Described first planet row's external toothing is connected with described driving engine; Described second motor is connected with first planet row's sun wheel; Described first planet row's sun wheel also is connected with second planet row's sun wheel through the closure of first liquid clutch, and described second planet row's external toothing is connected with described diff; Described first motor is connected with described pinion carrier, the closure of described pinion carrier through second liquid clutch and first planet arrange external toothing be connected.
On described pinion carrier, also be provided with first drg of this pinion carrier of locking, on described second planet row, also be provided with second drg of a locking second planet row sun wheel.
Innovative point of the present invention:
(1) this bimodulus two-stage satellite gear hybrid transmissions is that a domestic original electromechanical integration hybrid power speed change system drives assembly, and its core is the capable five shaft gear driving systems of arranging of double star;
(2) double-motor is arranged in planet row's homonymy, and engine position is arranged opposite side at planet, its control and more easy of integrationization of cooling system;
(3) double-motor is arranged in planet row homonymy, can realize the integrated of motor manufacturing and fit on, reduces the driving system volume, helps complete vehicle structure and arranges;
(4) adopt the transmission of two-stage satellite gear, can realize under the pure electronic operating mode, motor speed direction and output shaft rotary speed direction synchronous;
(5) when engine starting, according to the difference of operating mode, can use the independent start the engine of motor M G2 through control B1 locking pinion carrier C, perhaps, use the independent start the engine of motor M G1 through C2 coupling external toothing r1 and pinion carrier C; Two kinds of schemes guarantee the reliability of engine starting process;
(6) this bimodulus structure can be so that under pure electronic operating mode; Control B0 locking sun wheel s2 realization independent pure electric operation of motor M G1 and double-motor are united pure electric operation, and control C1 coupling sun wheel s1 and sun wheel s2 realize the independent pure electric operation of motor M G2;
(7) this bimodulus structure can realize the operation of motor M G1 and engine combined power so that under the hybrid power operating mode, motor M G2 and engine combined power operation, and double-motor associating and engine combined power operation;
(8) make system form multiple mode of operation through control clutch C1 and C2, can reduce requirement, reduced the processing and manufacturing difficulty of motor rotating speed of motor and torque;
(9) adopt double-motor to carry out speed control, have the more freedom degree, can make driving engine always work in best efficiency band;
(10) utilize power-transfer clutch B1 to motor M G1 locking control, and drg B0 carries out locking to sun wheel s2, can reduce waste of power, improved the efficient of system;
(11) make motor M G1 and driving engine constant speed synchronous through lock-up clutch C2, can improve the efficient of system.
(12) through control clutch C1 and power-transfer clutch C2 while locking, can make the synchronization of output shaft, double-motor and driving engine, simplify mode.
With compared with techniques, advantage of the present invention is:
1, bimodulus two-stage satellite gear hybrid transmissions utilizes B1 that electrical generator MG1 locking is controlled; And utilize B0 to the control of sun wheel s2 locking, improved the whole efficiency of system, and Prius can not carry out locking to electrical generator MG1; The conversion of energy is arranged all the time, and system effectiveness reduces;
2, bimodulus two-stage satellite gear hybrid transmissions can be realized multiple mode of operation, can reduce to rotating speed of motor and torque request and to the requirement of motor technology, and its direct effect is the processing and manufacturing difficulty that has reduced motor.
Description of drawings
Fig. 1 is the Prius of a Toyota hybrid transmissions constructional drawing.
Fig. 2 is a bimodulus two-stage satellite gear hybrid transmissions constructional drawing of the present invention.
The specific embodiment
Be illustrated in figure 2 as bimodulus two-stage satellite gear hybrid transmissions constructional drawing.This device is arranged shared pinion carrier C, main reduction gear, diff or the like parts and is formed by external toothing r1, sun wheel s1, second planet row's external toothing r2, sun wheel s2, two planets of driving engine (Engine), torsional vibration damper, motor M G1, motor M G2, drg B0, drg B1, liquid clutch C1, liquid clutch C2, first rows of planetary row.Driving engine (Engine), torsional vibration damper, motor M G1, motor M G2 and diff are described below with double planet wheel rows of mixing five driven off by shaft annexations: driving engine (Engine) links to each other with first planet row's external toothing r1; Motor M G2 links to each other with first planet row's sun wheel s1; Sun wheel s1 links to each other with sun wheel s2 through the closure of control liquid clutch C1; Second planet row's external toothing r2 links to each other with diff; Motor M G1 links to each other with the shared pinion carrier C of double planet wheel rows of mixing, and pinion carrier links to each other with external toothing r1 through the closure of control liquid clutch C2, and drg B0 can locking sun wheel s2 under some operating mode; Drg B1 can locking pinion carrier C under some operating mode, is meshing with each other with external toothing ingear second stage satellite gear separately among the two planets row.
The mode of operation of driving device of the present invention:
Through hybrid vehicle different working pattern the mode of operation of this scheme is done description:
(1) engine starting: when engine starting; According to the difference of operating mode, can use motor M G1 start the engine, this moment is through power-transfer clutch C2 be coupled exclusive gear ring r1 of first planet and pinion carrier C; Make win planet row sun wheel s1, the exclusive gear ring r1 of first planet and pinion carrier C synchronization; Motor M G1 rotates and output torque, and power passes to driving engine through pinion carrier C, the exclusive gear ring r1 of first planet, drives engine starting; Also can use motor M G2 start the engine, this moment, motor M G2 rotated and output torque through drg B1 locking pinion carrier C, and power passes to driving engine through first planet row sun wheel s1, the exclusive gear ring r1 of first planet, drives engine starting.Two kinds of schemes guarantee the reliability of engine starting process;
(2) electric-only mode operation: this driving device can be realized the pure electric operation of motor M G1, the pure electric operation of motor M G2, and double-motor is united pure electric operation.During the pure electric operation of motor M G1; Engine off and because of self towing astern torsional interaction remains static, drg B0 locking second planet row sun wheel s2, motor M G1 rotates; Power passes to wheel through pinion carrier C, the exclusive gear ring r2 of second planet, diff, motor M G2 idle running; During the pure electric operation of motor M G2; Engine off is static; Power-transfer clutch C1 be coupled first planet row sun wheel s1 and second planet row sun wheel s2 make both synchronization, and motor M G2 rotates; Power passes to wheel, motor M G1 idle running through first planet row sun wheel s1, second planet row sun wheel s2, the exclusive gear ring r2 of second planet, diff; Double-motor is united pure when electronic, and motor M G1 and motor M G2 output torque simultaneously act on the exclusive gear ring r2 of second planet, drive wheel.
(3) hybrid mode operation: under the hybrid power low-speed mode; Engine starting, drg B0 locking second planet row sun wheel s2, power-transfer clutch C2 be coupled exclusive gear ring r1 of first planet and pinion carrier C; Make win planet row sun wheel s1, the exclusive gear ring r1 of first planet and pinion carrier C synchronization; The power of driving engine passes to wheel through the exclusive gear ring r1 of first planet, pinion carrier C, the exclusive gear ring r2 of second planet, diff, through regulating the moment of torsion of motor M G1 and MG2, the output shaft rotating speed is increased; And the moment of torsion of a part of driving engine passed to motor M G2 generating; Charge a battery, thereby make engine operation, improve system effectiveness in ideal zone; Under the hybrid power fast mode; Drg B0 opens; Power-transfer clutch C1 and C2 be locking simultaneously; Make the planet row sun wheel s1 that wins, the exclusive gear ring r1 of first planet, second planet row sun wheel s2, the exclusive gear ring r2 of second planet and pinion carrier C synchronization, this moment, motor M G1 and motor M G2 did auxiliary power, kept the high-speed cruising of automobile together with driving engine.

Claims (2)

1. bimodulus two-stage satellite gear hybrid transmissions; Comprise driving engine, first motor, second motor, pinion carrier and diff; It is characterized in that: described pinion carrier is provided with first planet row and second planet row; First order satellite gear and second stage satellite gear are drawn together in the described first planet package; Described second planet row also comprises first order satellite gear and second stage satellite gear; Described first planet row's first order satellite gear and first planet row's sun wheel engagement, described first planet row's second stage satellite gear and first planet row's external toothing engagement, described second planet row's first order satellite gear and second planet row's sun wheel engagement; Described second planet row's second stage satellite gear and second planet row's external toothing engagement, described first planet row's second stage satellite gear and described second planet row's second stage satellite gear also meshes; Described first planet row's external toothing is connected with described driving engine; Described second motor is connected with first planet row's sun wheel; Described first planet row's sun wheel also is connected with second planet row's sun wheel through the closure of first liquid clutch, and described second planet row's external toothing is connected with described diff; Described first motor is connected with described pinion carrier, the closure of described pinion carrier through second liquid clutch and first planet arrange external toothing be connected.
2. double planet wheel rows of mixing bimodulus hybrid transmissions according to claim 1; It is characterized in that: on described pinion carrier, also be provided with first drg of this pinion carrier of locking, on described second planet row, also be provided with second drg of a locking second planet row sun wheel.
CN201210097446.1A 2012-04-06 2012-04-06 Hybrid power transmission device of dual-mode two-stage planet wheel Expired - Fee Related CN102616127B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102815197A (en) * 2012-08-24 2012-12-12 北京理工大学 Rear-driven double-mode four-gear hybrid power transmission device
CN103085643A (en) * 2012-12-31 2013-05-08 长城汽车股份有限公司 Hybrid power transmission

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19909424A1 (en) * 1999-02-23 2000-08-24 Peter Tenberge Hybrid gearing for vehicle
US20040110592A1 (en) * 2002-12-04 2004-06-10 Nissan Motor Co., Ltd. Hybrid transmission
CN101817305A (en) * 2010-04-02 2010-09-01 中国汽车技术研究中心 Hybrid power drive device
CN101992679A (en) * 2009-08-24 2011-03-30 上海华普国润汽车有限公司 Double planetary row four-axis hybrid power transmission device
CN102312966A (en) * 2011-08-23 2012-01-11 南京航空航天大学 Double-planetary-gear-set double-mode hybrid power transmission device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19909424A1 (en) * 1999-02-23 2000-08-24 Peter Tenberge Hybrid gearing for vehicle
US20040110592A1 (en) * 2002-12-04 2004-06-10 Nissan Motor Co., Ltd. Hybrid transmission
CN101992679A (en) * 2009-08-24 2011-03-30 上海华普国润汽车有限公司 Double planetary row four-axis hybrid power transmission device
CN101817305A (en) * 2010-04-02 2010-09-01 中国汽车技术研究中心 Hybrid power drive device
CN102312966A (en) * 2011-08-23 2012-01-11 南京航空航天大学 Double-planetary-gear-set double-mode hybrid power transmission device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102815197A (en) * 2012-08-24 2012-12-12 北京理工大学 Rear-driven double-mode four-gear hybrid power transmission device
CN102815197B (en) * 2012-08-24 2014-12-10 北京理工大学 Rear-driven double-mode four-gear hybrid power transmission device
CN103085643A (en) * 2012-12-31 2013-05-08 长城汽车股份有限公司 Hybrid power transmission
CN103085643B (en) * 2012-12-31 2015-08-05 长城汽车股份有限公司 Hybrid gearbox

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