CN103953698B - A kind of electrically driven (operated) planetary transmission - Google Patents
A kind of electrically driven (operated) planetary transmission Download PDFInfo
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- CN103953698B CN103953698B CN201410182960.4A CN201410182960A CN103953698B CN 103953698 B CN103953698 B CN 103953698B CN 201410182960 A CN201410182960 A CN 201410182960A CN 103953698 B CN103953698 B CN 103953698B
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
- F16H3/46—Gearings having only two central gears, connected by orbital gears
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/003—Transmissions for multiple ratios characterised by the number of forward speeds
- F16H2200/0034—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising two forward speeds
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/20—Transmissions using gears with orbital motion
- F16H2200/2002—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears
- F16H2200/2007—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears with two sets of orbital gears
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/20—Transmissions using gears with orbital motion
- F16H2200/203—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes
- F16H2200/2035—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes with two engaging means
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structure Of Transmissions (AREA)
- Retarders (AREA)
Abstract
A kind of electrically driven (operated) planetary transmission, it includes housing, input link, output link, Simpson compound planetary row, two torque transmitters and four interconnecting components；Centered by Simpson compound planetary is arranged, left is the input link of drive system, and right is the output link of power train, and two torque transmitters are brake, and side by side near housing, above-mentioned each component is respectively positioned in housing；The present invention has the series of advantages such as simple in construction is tight, transmission efficiency is high, good manufacturability, manufacturing expense are low, gear shift is steady, maneuvering performance is good, it is used in electric motor car carrying out transmission work, not only save space, and transmission efficiency is high, meet motor operating characteristic, drive characteristic can be made more preferable.
Description
Technical field
The present invention provides a kind of electrically driven (operated) planetary transmission, and it is the epicyclic transmission of a kind of two gears, belongs to electric vehicle automatic transmission technical field.
Background technology
Growing along with electric automobile, the requirement for transmission system performance is more and more higher.Owing to traditional fixed drive ratio variator is to driving motor require high and can not take into account economy and dynamic property, so Development of EV multi-speed automatic transmission has become irresistible trend.Due to epicyclic transmission there is big speed ratio, volume is little, bearing capacity is big, stable working, therefore be widely used in automatic transmission.Therefore, the arrangement of planet row is designed to the primary premise of automatic transmission exploitation.
Patent CN203098765U discloses a kind of arrangement including two groups of planetary gear set of before and after.In scheme, front sun gear is connected with motor output shaft, and former and later two sun gears are coaxial and rear sun gear is fixed, and rear expert's star-wheel engages with rear sun gear and rear layman's star-wheel, and final power is exported by rear gear ring.Two clutches are arranged on the gear ring on the planet carrier between front planet carrier and rear expert's star-wheel and between front ring gear and rear layman's star-wheel.Two brakes are respectively used to lock planet carrier before front ring gear and locking.
Scheme disclosed in patent CN202872557U includes two single 2K-H planetary transmission systems, and the realization of primary speed-down is dependent on front-seat planetary transmission system, is fixed by front row gear ring, and power is i.e. transferred to front-seat planet carrier output from front-seat sun gear.Two gears are then completed by heel row planetary transmission system, and clutch C1 realizes the combination of heel row sun gear and heel row planet carrier or separates, and brake B1 realizes the fixing of rear ring gear and casing and separates, and is finally exported power by heel row planet carrier.
The open scheme of patent CN201795003U is as follows: power shaft drives planet carrier by first clutch, and drives sun gear, the output shaft of one termination motor by second clutch.Meanwhile, output gear is the most affixed with planet carrier, and it drives the driving gear of differential mechanism by jackshaft, and gear ring is then affixed with gearbox case.
Electric car automatic speed transmission technology starts to walk soon, but volume is little, compact conformation and improve the feature such as electric efficiency and make it be born to have necessity.From current research it can be seen that the planet row arrangement of electric automobile two-shift automatic speed variator also has the biggest research space.
Summary of the invention
(1) purpose
It is an object of the invention to provide a kind of electrically driven (operated) planetary transmission, which overcome the deficiencies in the prior art, be a kind of compact conformation, it is simple to two shift transmissions that electro-motive vehicle travels.
(2) technical scheme
The present invention is a kind of electrically driven (operated) planetary transmission, and it includes housing, input link, output link, Simpson compound planetary row, two torque transmitters, four interconnecting components.Wherein, the position relationship between them is: centered by Simpson compound planetary is arranged, left is the input link of drive system, and right is the output link of power train, and two torque transmitters are brake, side by side near housing.Above-mentioned each component is respectively positioned in housing.
Described housing is the shell of planetary transmission, is fixed, for accommodating and support other components of variator, depending on its shape and structure is because of layout, there is not fixed form.
Described input link is the power shaft of planetary transmission, by this axle, output speed and the torque of motor is input to planetary transmission, and input link is unique, is in Simpson compound planetary row front.
Described output link is the output shaft of planetary transmission, exports to follow-up power transmission shaft by this axle by rotating speed and the moment of torsion of planetary transmission, and output link is unique, is in Simpson compound planetary row rear.
Described Simpson compound planetary row is the planetary gears of a kind of combined type, by a sun gear assembly, a front-seat planet carrier, a front-seat gear ring and heel row planet carrier, a rear ring gear and forward and backward rows of planetary wheel composition；Sun gear assembly engages with front-seat and heel row planetary gear respectively, and front-seat gear ring engages with front-seat planetary gear, and rear ring gear engages with heel row planetary gear, and front-seat gear ring and heel row planet carrier connect firmly.
Described first interconnecting component is connecting shaft, and sun gear assembly and power shaft that Simpson compound planetary is arranged by this axle are fixed together.
Described second interconnecting component is connecting shaft, and rear ring gear and output shaft that Simpson compound planetary is arranged by this axle are fixed together.
Described 3rd interconnecting component is connecting shaft, front-seat gear ring that Simpson compound planetary is arranged by this interconnecting component and heel row planet carrier and the first torque transmitter is fixing connects.
Described 4th interconnecting component is connecting shaft, and front-seat planet carrier and the second torque transmitter that Simpson compound planetary is arranged by this interconnecting component are fixed and connected.
Two described torque transmitters are all wet friction joint element, are linked together by two corresponding components by engaging of different torque transmitters.Two torque transmitters can optionally locking, by certain, two components are temporary couples together.
This first torque transmitter can optionally locking, by Simpson compound planetary arrange front-seat gear ring and heel row planet carrier couple together with housing.
This second torque transmitter can optionally locking, by Simpson compound planetary arrange front-seat planet carrier couple together with housing.
Wherein, the transmission scheme related in the present invention produces two forward gears by controlling two torque transmitters, it is achieved automatic transmission function.
Wherein, above-mentioned Simpson compound planetary row be made up of two simple negative sign planet rows, shares a sun gear assembly, and wherein front-seat gear ring connects firmly into an assembly with heel row planet carrier；In above-mentioned Simpson compound planetary row, involved gear is all helical teeth profile of tooth.
Wherein, the first, second torque transmitter is wet friction chip brake.The size dimension of brake, needs to calculate according to the motor output torque mated and obtain, and the present invention is not limiting as concrete applicable model and specification.
Structural principle and the work overview brief introduction of the present invention are as follows: when all torque transmitters are in released state, this planetary gears degree of freedom is 2, does not has power to transmit between input link and output link；When the first torque transmitter is in blocking, front-seat gear ring and the heel row planet carrier component of Simpson compound planetary row are fixed, this planetary gears degree of freedom reduces to 1, there is power transmission between input and output component, and input link is a gear gear ratio with the ratio of output link rotating speed.
When the second torque transmitter is in blocking, the front-seat planet carrier of Simpson compound planetary row is fixed, this planetary gears degree of freedom reduces to 1, there is power transmission between input and output component, and input link is two gear gear ratios with the ratio of output link rotating speed.
(3) advantage
Simpson has the series of advantages such as simple in construction is tight, transmission efficiency is high, good manufacturability, manufacturing expense are low, gear shift is steady, maneuvering performance is good.It is used in electric motor car carrying out transmission work, not only saves space, and transmission efficiency is high, meet motor operating characteristic, drive characteristic can be made more preferable.
Accompanying drawing explanation
Fig. 1 is the detailed description of the invention structural representation of the electric drive planetary transmission according to the present invention；
Reference
0 housing；1 first interconnecting component；2 second interconnecting components；3 the 3rd interconnecting components；4 the 4th interconnecting components；
Sun gear before S1；S2 rear sun gear；R1 front row gear ring；R2 rear ring gear；
A1 front row planet carrier；A2 heel row planet carrier；G1 front row planetary gear；G2 heel row planetary gear；
P1 front row negative sign planet row；P2 heel row negative sign planet row；IN power shaft；OUT output shaft；
B1 the first torque transmitter；B2 the second torque transmitter.
Detailed description of the invention:
Following description is substantially only exemplary and that be not intended to limit the present invention application or use.
A kind of electrically driven (operated) planetary transmission of the present invention, it is two gear electrically driven speed change devices of a kind of planetary gear construction, and it contains housing 0；Input link i.e. power shaft IN；Output link i.e. output shaft OUT；Simpson compound planetary is arranged；First interconnecting component 1；Second interconnecting component 2；3rd interconnecting component 3；4th interconnecting component 4；First torque transmitter B1；Second torque transmitter B2.Relation between them is: centered by Simpson compound planetary is arranged, left is the input link of drive system, and right is the output link of power train, and two torque transmitters are brake, and side by side near housing 0, above-mentioned each component is respectively positioned in housing 0.
Housing 0 determines according to concrete engineering embodiment, and major function is to support every component of this invention.
First, the embodiment of the two gear electrically driven speed change devices of the present invention has permanent mechanical connection setting on Simpson compound planetary row.
Referring initially to Fig. 1, this variator includes power shaft IN, and Simpson compound planetary is arranged, housing 0, output shaft OUT, the first torque transmitter B1, the second torque transmitter B2, first interconnecting component 1, second interconnecting component 2, the 3rd interconnecting component 3, the 4th interconnecting component 4, in embodiments of the present invention, Simpson compound planetary row is as described below.
Simpson compound planetary row is made up of front-seat negative sign planet row P1 and heel row negative sign planet row P2, and it includes forward and backward sun gear S1, S2, forward and backward seniority among brothers and sisters star-wheel G1, G2, forward and backward toothrow circle R1, R2, forward and backward seniority among brothers and sisters carrier A1, A2.Forward and backward sun gear S1, S2 are connected by the first interconnecting component 1 is fixing with power shaft IN；Rear ring gear R2 is connected by the second interconnecting component 2 is fixing with output shaft OUT；Front-seat gear ring R1 and heel row planet carrier A2 is fixedly linked by the 3rd interconnecting component and the first torque transmitter B1；Front-seat planet carrier A1 is fixedly linked by the 4th interconnecting component and the second torque transmitter B2.
Front-seat gear ring R1 and heel row planet carrier A2 that Simpson compound planetary is arranged by the first torque transmitter B1 optionally connect with case of transmission 0.The front-seat planet carrier A1 that Simpson compound planetary is arranged by the second torque transmitter B2 optionally connects with case of transmission 0.
Power shaft IN is directly connected to motor (not shown).Output shaft OUT is connected to the (not shown) such as final gear unit or transfer gear.
The gear shift operation of this embodiment is described referring initially to rear list one shift logic figure and each gear gear ratio.Moment of torsion can be delivered to output shaft OUT from power shaft IN with two forward gear speed ratios or torque ratio by this variator.Combine by some in torque transmitter (shifting element), it is possible to obtain the gear ratio of each forward gear or torque ratio.Table one shows the combination truth table being activated or engaging to realize the torque-transmitting mechanisms of shifting state.As shown in table one, "×" represents this concrete torque transmitter (shifting element) and is engaged to realize expectation shifting state.Wherein Simpson compound planetary row is considered as by front sun gear S1, front-seat planetary gear G1, front-seat gear ring R1, planet carrier A1 composition fixed drive ratio is the negative sign planetary gearsets of-3.68 and by rear sun gear S2, heel row planetary gear G2, heel row planet carrier A2 and rear ring gear R2 forms the negative sign planetary gearsets that gear ratio is-3.45 and collectively forms, and tries to achieve the gear ratio value of each gear of variator shown in table one.
The operation of two shift transmissions and the preceding description of shifting state are assumed: first, be that all shifting elements specifically mentioned all depart from given shifting state；Secondly, gearshift (i.e. the changing shifting state) period between adjacent shifting state, the shifting element all engaged under two shifting state will remain engaged with state.
The present invention says what face was substantially merely exemplary, and the deformation being allowed to without departing from the present invention is intended to be included within the scope of the invention.This modification is considered without departing from the spirit and scope of the present invention.
Transmission scheme gear ratio calculation method is as follows:
One gear gear ratio calculation formula: i1=i01
Two gears gear ratio calculation formula i2=-i01*i02/ (1-i01-i02)
In formula, symbol description is as follows:
I1 mono-keeps off gear ratio
I2 bis-keeps off gear ratio
The front-seat negative sign planetary gearsets fixed drive ratio of i01 Simpson compound planetary row's equivalence
I02 Simpson compound planetary row's equivalence heel row negative sign planetary gearsets fixed drive ratio
Table one
| B1 | B2 | Gear ratio | |
| 1 | X | -3.68 | |
| 2 | X | -1.56 |
Claims (1)
1. an electrically driven (operated) planetary transmission, it is characterised in that: it contains housing, input link i.e. power shaft, output link i.e. output shaft, Simpson compound planetary row, the first interconnecting component, the second interconnecting component, the 3rd interconnecting component, the 4th interconnecting component, the first torque transmitter and the second torque transmitter；Relation between them is: centered by Simpson compound planetary is arranged, left is the input link of drive system, and right is the output link of drive system, and two torque transmitters are brake, side by side near housing；
Housing function is to support every component of electrically driven (operated) planetary transmission；
Simpson compound planetary row is made up of front-seat negative sign planet row and heel row negative sign planet row, and it includes forward and backward sun gear, forward and backward rows of planetary gear, forward and backward toothrow circle, forward and backward seniority among brothers and sisters carrier；Forward and backward sun gear is connected by the first interconnecting component and power shaft are fixing；Rear ring gear is connected by the second interconnecting component and output shaft are fixing；Front-seat gear ring and heel row planet carrier are fixedly linked by the 3rd interconnecting component and the first torque transmitter；Front-seat planet carrier is fixedly linked by the 4th interconnecting component and the second torque transmitter；
Front-seat gear ring and heel row planet carrier that Simpson compound planetary is arranged by the first torque transmitter optionally connect with case of transmission；The front-seat planet carrier that Simpson compound planetary is arranged optionally is connected by the second torque transmitter with case of transmission；
Power shaft is directly connected to motor；Output shaft is connected to final gear unit；
Moment of torsion can be delivered to output shaft from power shaft with two forward gear gear ratios or torque ratio by this variator；Combine by some in torque transmitter, it is thus achieved that the gear ratio of each forward gear or torque ratio；Table one is the combination truth table being activated or engaging to realize the torque-transmitting mechanisms of shifting state；In table one, "×" represents this concrete torque transmitter and is engaged to realization expectation shifting state；Wherein Simpson compound planetary row regards as by front sun gear, front-seat planetary gear, front-seat gear ring, front-seat planet carrier composition fixed drive ratio is the negative sign planetary gearsets of-3.68 and by rear sun gear, heel row planetary gear, heel row planet carrier and the negative sign planetary gearsets that rear ring gear composition gear ratio is-3.45 collectively form；
Transmission scheme gear ratio calculation method is as follows:
One gear gear ratio calculation formula: i1=i01
Two gears gear ratio calculation formula: i2=-i01*i02/ (1-i01-i02)
In formula, symbol description is as follows:
I1 mono-keeps off gear ratio；
I2 bis-keeps off gear ratio；
The front-seat negative sign planetary gearsets fixed drive ratio of i01 Simpson compound planetary row's equivalence；
I02 Simpson compound planetary row's equivalence heel row negative sign planetary gearsets fixed drive ratio；
Table one
。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410182960.4A CN103953698B (en) | 2014-04-30 | 2014-04-30 | A kind of electrically driven (operated) planetary transmission |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410182960.4A CN103953698B (en) | 2014-04-30 | 2014-04-30 | A kind of electrically driven (operated) planetary transmission |
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| CN103953698A CN103953698A (en) | 2014-07-30 |
| CN103953698B true CN103953698B (en) | 2016-08-03 |
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| CN201410182960.4A Active CN103953698B (en) | 2014-04-30 | 2014-04-30 | A kind of electrically driven (operated) planetary transmission |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387156B (en) * | 2015-12-09 | 2017-09-26 | 中国北方车辆研究所 | The two-shift automatic speed variator that a kind of electric drive is used |
| CN107044518B (en) * | 2017-02-22 | 2023-06-23 | 哈尔滨东安汽车发动机制造有限公司 | Second gear power transmission device |
| CN110657201B (en) * | 2018-06-29 | 2022-03-18 | 比亚迪股份有限公司 | Transmission, power driving system and vehicle |
| CN110056614B (en) * | 2019-04-23 | 2020-08-21 | 合肥工业大学 | Three-gear automatic transmission based on three-clutch electric automobile |
| CN111396516B (en) * | 2020-06-02 | 2020-10-16 | 北京航空航天大学 | Planetary gear speed change device for electric automobile |
| CN114407640B (en) * | 2022-02-09 | 2022-10-18 | 北京理工大学 | Three-gear hub driving device and using method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3812739A (en) * | 1969-06-04 | 1974-05-28 | Nissan Motor | Gear train arrangements |
| US5772552A (en) * | 1994-10-03 | 1998-06-30 | Toyota Jidosha Kabushiki Kaisha | Gear transmission unit for automatic transmission |
| CN102927222A (en) * | 2012-10-29 | 2013-02-13 | 长城汽车股份有限公司 | Automatic transmission |
| CN103119328A (en) * | 2010-11-10 | 2013-05-22 | 福特全球技术公司 | Multi-gear gearbox |
| CN203926645U (en) * | 2014-04-30 | 2014-11-05 | 北京航空航天大学 | A kind of electrically driven (operated) planetary transmission |
-
2014
- 2014-04-30 CN CN201410182960.4A patent/CN103953698B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3812739A (en) * | 1969-06-04 | 1974-05-28 | Nissan Motor | Gear train arrangements |
| US5772552A (en) * | 1994-10-03 | 1998-06-30 | Toyota Jidosha Kabushiki Kaisha | Gear transmission unit for automatic transmission |
| CN103119328A (en) * | 2010-11-10 | 2013-05-22 | 福特全球技术公司 | Multi-gear gearbox |
| CN102927222A (en) * | 2012-10-29 | 2013-02-13 | 长城汽车股份有限公司 | Automatic transmission |
| CN203926645U (en) * | 2014-04-30 | 2014-11-05 | 北京航空航天大学 | A kind of electrically driven (operated) planetary transmission |
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