CN202215683U - Dual-planet row and dual-die hybrid power drive device - Google Patents

Dual-planet row and dual-die hybrid power drive device Download PDF

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Publication number
CN202215683U
CN202215683U CN2011203082575U CN201120308257U CN202215683U CN 202215683 U CN202215683 U CN 202215683U CN 2011203082575 U CN2011203082575 U CN 2011203082575U CN 201120308257 U CN201120308257 U CN 201120308257U CN 202215683 U CN202215683 U CN 202215683U
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China
Prior art keywords
planet
motor
planet row
row
dual
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Withdrawn - After Issue
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CN2011203082575U
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Chinese (zh)
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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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Abstract

The utility model discloses a dual-planet row and dual-die hybrid power drive device which 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, a sun gear of the first planet row is connected with the engine, and an outer gear ring of the first planet row is connected with the differential; a sun gear of the second planet row is connected with the second motor, and the first motor is connected on the planet carrier; and a second wet-type clutch which can connect and disconnect the planet carrier and the sun gear of the first planet row is further arranged between the planet carrier and the sun gear of the first planet row. According to the dual-planet row and dual-die power drive device, multiple work modes can be realized, the requirements on the rotation speed and the torque of the motors as well as on the technology of the motors can be reduced, and the direct effect is that the motor manufacturing and processing difficulties are reduced.

Description

Double planet wheel rows of mixing bimodulus hybrid transmissions
Technical field
the present invention relates to a kind of hybrid transmissions, especially a kind of transmission device that adopts the planetary pinion transmission.
Background technique
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 automobile industry 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 packages of HEV are lumped together; Realize between multi power source reasonably power division and pass to ransaxle 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.Planetary gear train has the characteristics of multi-freedom degree, input output flexible and controllable; Therefore and compact structure, 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 epicyclic gear system is redistributed the output power of motor, reaches the purpose of rational and balanced engine load.The Prius of the Toyota hybrid transmissions structural drawing that is shown in Figure 1, wherein 1, motor, 2, bent axle, 3, retarder; 4, generator MG1,5, epicyclic train, 6, sun gear, 7, planet wheel; 8, external toothing, 8a, gear ring drive sprocket, 9, planet carrier; 10, silent chain, 11, reduction gear, 12, driven gear.13, reduction gear, 14, differential mechanism, 15a, b, driving wheel, 16, motor MG2.Its mixed power system assembly is made up of parts such as motor (Engine), generator (MG1), motor (MG2), dynamic coupling system, inverter and power accumulators.Motor and planet carrier link in this mechanism, give external toothing and sun gear through planetary pinion with transmission of power, and gear ring axle and motor and transmission shaft link, sun wheel shaft and generator electric.This system is directly delivered to the most of torque of motor on the live axle, and generator is passed in the fraction torque, and the electric energy that generator sends is used for battery charge or motor according to instruction, to increase driving force.This structure can change it through the regulator generator rotating speed, makes motor 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 stepless speed variator.
This structural 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-driven technology between planet row's output gear and the intermediate gear shaft;
4) because planetary pinion is realized electrodeless variable-speed, the engine speed and the speed of a motor vehicle do not have direct relation; And motor is a main power source, and in the whole service process, motor provides whole energy.Therefore, the key of car load control is to seek the best efficiency point of motor 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 existing technology shortcoming:
1, motor arrangement:
Two motors are arranged in planet row's both sides, and the cooling system complicated layout, the electric system level of integration 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 motor 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 motor optimum working temperatures; Therefore the influence that can receive the motor body heat radiation of MG1 housing raises fast, can cause the motor cooling system often to be in the working state 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 radiation system more complicated, and level of integration is low, has brought the cost increase, and reliability is low.
2, single planetary gear train reduction speed ratio is crossed to hang down system is impacted:
(a) mixed power system requires too high to motor performance;
Mixed power system is wide to the rotating speed of motor excursion, and is very harsh to motor accuracy of manufacturing, rotating speed/torque characteristics and requirement for dynamic balance thereof.
(b) mixed power system requires too high to spatial arrangement;
In order to reach enough reduction speed ratio, the driving gear deceleration system requires too high to spatial arrangement, and this speed reducer has adopted and comprised chaindriven multistage transmission part, has further strengthened the complexity of system.
3, the latch functions of motor M G1 disappearance, its working 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 motor.Under this operating mode, the working efficiency of MG1 is very low, and the output power 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 problem
The present invention is exactly in order to overcome above-mentioned shortcoming; Designed and developed the special-purpose double planet wheel rows of mixing bimodulus hybrid transmissions of a cover PHEV; Realize transmission efficiently through structural 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.
Technological scheme
For solving the problems of the technologies described above; The technological scheme that the present invention adopts is: a kind of double planet wheel rows of mixing bimodulus hybrid transmissions; Comprise motor, first motor, second motor, planet carrier and differential mechanism; It is characterized in that: be provided with first planet row and second planet row at described planet carrier, described first planet row's sun gear is connected with described motor, and described first planet row's external toothing is connected with described differential mechanism; Described second planet row's sun gear is connected with described second motor; Second planet row's planet wheel also meshes with the external toothing that described first planet is arranged, and between the sun gear that described second planet row's the external toothing and second planet are arranged, also is provided with one and makes second planet row's external toothing and sun gear closure that second planet is arranged or first wet clutch that breaks off; Described first motor is connected on the described planet carrier; Between described planet carrier and first planet row's sun gear, also be provided with second wet clutch that the sun gear that makes planet carrier and first planet row is closed or break off.
On described planet carrier, also be provided with first break of this planet carrier of locking, on described second planet row, also be provided with second break of the exclusive gear ring of a locking second planet.
Innovative point of the present invention is:
(1) this double planet wheel rows of mixing bimodulus hybrid transmissions is that a domestic original electromechanical integration mixed power speed variator system drives assembly, and its core is the capable five shaftgear transmission systems of arranging of double star;
(2) dual-motor is arranged in planet row homonymy, and engine arrangement is arranged opposite side at planet, its control and more easy of integrationization of cooling system;
(3) dual-motor is arranged in planet row homonymy, can realize the integrated of motor manufacturing and fit on, reduces the transmission system volume, helps complete vehicle structure and arranges;
(4) first planet row's external toothing r1 is meshed with first planet row's planet wheel and second planet row's planet wheel simultaneously, can realize the direct transmission to output shaft of motor and motor M G2 power.
(5) when engine start, according to the difference of operating mode, can use the independent ato unit of motor M G1, perhaps through B0 locking external toothing r2, use the independent ato unit of motor M G2; Two kinds of schemes guarantee the reliability of engine starting process;
(6) this bimodulus structure can realize the independent pure electric operation of motor M G1 so that under pure electronic operating mode, unites pure electric operation through control B0 locking external toothing s2 realization independent pure electric operation of motor M G2 and dual-motor;
(7) this bimodulus structure can realize the operation of motor M G1 and engine combined power so that under the mixed power operating mode, motor M G2 and engine combined power operation, and dual-motor associating and engine combined power operation;
(8) through control B0 locking external toothing r2, solenoidoperated cluthes C1 coupling electric machine MG2 and external toothing r2 form the fixed speed ratio transmission under the mixed on low speed dynamic mode;
(9) make system form multiple mode of operation through solenoidoperated cluthes C1 and C2, can reduce requirement, reduced the manufacturing difficulty of motor rotating speed of motor and torque;
(10) adopt dual-motor to carry out speed regulating control, have the more freedom degree, can make motor always work in best efficiency band;
(11) utilize clutch B1 to motor M G1 locking control, and break B0 carries out locking to external toothing r2, can reduce energy loss, improved the efficient of system;
(12) under the hybrid mode, make the synchronization of motor M G1 and motor, can improve the efficient of system, simplify control mode through solenoidoperated cluthes C2;
(13) under the hybrid mode,, can make the synchronization of output shaft, dual-motor and motor, simplify control mode through solenoidoperated cluthes C1 and clutch C2 while locking.
Compared with prior art, advantage of the present invention:
1, double planet wheel rows of mixing bimodulus hybrid transmissions utilizes B1 that generator MG1 locking is controlled; And utilize B0 to the control of external toothing r2 locking, improved the whole efficiency of system, and Prius can not carry out locking to generator MG1; The conversion of energy is arranged all the time, and system effectiveness reduces;
2, double planet wheel rows of mixing bimodulus 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 manufacturing difficulty that has reduced motor.
Description of drawings
Fig. 1 is the existing Prius of Toyota hybrid transmissions structural drawing.
Fig. 2 is transmission structures figure of the present invention.
Embodiment
Be illustrated in figure 2 as double planet wheel rows of mixing bimodulus hybrid transmissions structural drawing.This device is arranged shared planet carrier C, main reducing gear, differential mechanism or the like parts and is formed by external toothing r1, sun gear s1, second planet row's external toothing r2, sun gear s2, two planets of motor (Engine), torsional vibration damper, motor M G1, motor M G2, break B0, break B1, wet clutch C1, wet clutch C2, first rows of planetary row.Motor (Engine), torsional vibration damper, motor M G1, motor M G2 and differential mechanism are described below with double planet wheel rows of mixing five driven off by shaft annexations: motor (Engine) links to each other with first planet row's sun gear s1; First planet row's external toothing r1 links to each other with differential mechanism; Motor M G2 links to each other with second planet row's sun gear s2; Second planet row's external toothing r2 links to each other with sun gear s2 through the closure of control wet clutch C1; Motor M G1 links to each other with the shared planet carrier C of double planet wheel rows of mixing; Planet carrier C links to each other with sun gear s1 through the closure of control wet clutch C2; Break B0 can locking external toothing r2 under some operating mode, and break B1 can locking planet carrier C under some operating mode, first planet row's external toothing r1 simultaneously and first planet row's planet wheel and second planet row's planet wheel be meshed.
Working method of the present invention:
Through hybrid vehicle different working pattern the working method of this scheme is done description:
(1) engine start: when engine start; Difference according to operating mode; Can use motor M G1 ato unit, this moment, the first planet wheel external toothing r1 linked to each other with differential mechanism, and motor M G1 rotates and output torque; Power passes to motor through planet carrier C, first planet row sun gear s1, drives engine start; Also can use motor M G2 ato unit; This moment is through the exclusive gear ring r2 of break B0 locking second planet; Motor M G2 rotates and output torque, and power passes to motor through second planet row sun gear s2, planet carrier C, first planet row sun gear s1, drives engine start.Two kinds of schemes guarantee the reliability of engine starting process;
(2) electric-only mode operation: this transmission device can be realized the pure electric operation of motor M G1, the pure electric operation of motor M G2, and dual-motor is united pure electric operation.During the pure electric operation of motor M G1, engine misses and because of self towing astern torsional interaction remains static, motor M G1 rotates, and power passes to wheel through planet carrier C, the exclusive gear ring r1 of first planet, differential mechanism, motor M G2 idle running; During the pure electric operation of motor M G2; Engine misses are static, the exclusive gear ring r2 of break B0 locking second planet, and motor M G2 rotates; Power passes to wheel, motor M G1 idle running through second planet row sun gear s2, planet carrier C, the exclusive gear ring r1 of first planet, differential mechanism; Dual-motor is united pure when electronic, and motor M G1 and motor M G2 output torque simultaneously act on the exclusive gear ring r1 of first planet, drive wheel.
(3) hybrid mode operation: under the mixed power low-speed mode; Engine start, the exclusive gear ring r2 of break B0 locking second planet, the power of motor passes to wheel through first planet row sun gear s1, planet carrier C, the exclusive gear ring r1 of first planet, differential mechanism; Through regulating the moment of torsion of motor M G1 and motor M G2; The output shaft rotating speed is increased, and the moment of torsion of a part of motor is passed to motor M G2 generating, charge a battery; Thereby make engine operation in ideal zone, improve system effectiveness; Under the mixed power fast mode; Break B0 opens; Clutch C1 and C2 be locking simultaneously; Make the planet row sun gear s1 that wins, the exclusive gear ring r1 of first planet, second planet row sun gear s2, the exclusive gear ring r2 of second planet and planet carrier C synchronization, this moment, motor M G1 and motor M G2 did auxiliary power, kept the high speed operation of automobile together with motor.

Claims (2)

1. double planet wheel rows of mixing bimodulus hybrid transmissions; Comprise motor, first motor, second motor, planet carrier and differential mechanism; It is characterized in that: be provided with first planet row and second planet row at described planet carrier; Described first planet row's sun gear is connected with described motor, and described first planet row's external toothing is connected with described differential mechanism; Described second planet row's sun gear is connected with described second motor; Second planet row's planet wheel also meshes with the external toothing that described first planet is arranged, and between the sun gear that described second planet row's the external toothing and second planet are arranged, also is provided with one and makes second planet row's external toothing and sun gear closure that second planet is arranged or first wet clutch that breaks off; Described first motor is connected on the described planet carrier; Between described planet carrier and first planet row's sun gear, also be provided with second wet clutch that the sun gear that makes planet carrier and first planet row is closed or break off.
2. double planet wheel rows of mixing bimodulus hybrid transmissions according to claim 1; It is characterized in that: on described planet carrier, also be provided with first break of this planet carrier of locking, on described second planet row, also be provided with second break of the exclusive gear ring of a locking second planet.
CN2011203082575U 2011-08-23 2011-08-23 Dual-planet row and dual-die hybrid power drive device Withdrawn - After Issue CN202215683U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN102785564A (en) * 2012-08-24 2012-11-21 北京理工大学 Front-wheel-driven dual-mode four-gear hybrid drive device
CN103470702A (en) * 2012-06-05 2013-12-25 通用汽车环球科技运作有限责任公司 Two-mode electrically-variable transmission with offset motor and two planetary gear sets
CN105346410A (en) * 2015-10-27 2016-02-24 重庆大学 Dual-motor power driving assembly
US9702438B2 (en) 2014-09-29 2017-07-11 The Royal Institution For The Advancement Of Learning/Mcgill University Seamless transmission systems and methods for electric vehicles
WO2020125465A1 (en) * 2018-12-17 2020-06-25 北京航空航天大学 Multi-mode electromechanical coupling transmission device having two motors and two planetary gear sets

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN102312966B (en) * 2011-08-23 2014-07-16 南京航空航天大学 Double-planetary-gear-set double-mode hybrid power transmission device
CN103470702A (en) * 2012-06-05 2013-12-25 通用汽车环球科技运作有限责任公司 Two-mode electrically-variable transmission with offset motor and two planetary gear sets
CN103470702B (en) * 2012-06-05 2017-01-18 通用汽车环球科技运作有限责任公司 Two-mode electrically-variable transmission with offset motor and two planetary gear sets
CN102785564A (en) * 2012-08-24 2012-11-21 北京理工大学 Front-wheel-driven dual-mode four-gear hybrid drive device
CN102785564B (en) * 2012-08-24 2014-12-24 北京理工大学 Front-wheel-driven dual-mode four-gear hybrid drive device
US9702438B2 (en) 2014-09-29 2017-07-11 The Royal Institution For The Advancement Of Learning/Mcgill University Seamless transmission systems and methods for electric vehicles
CN105346410A (en) * 2015-10-27 2016-02-24 重庆大学 Dual-motor power driving assembly
WO2020125465A1 (en) * 2018-12-17 2020-06-25 北京航空航天大学 Multi-mode electromechanical coupling transmission device having two motors and two planetary gear sets

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Granted publication date: 20120509

Effective date of abandoning: 20140716