CN101865263B - Dedicated automatic transmission planetary gear mechanism of pure electric vehicles - Google Patents
Dedicated automatic transmission planetary gear mechanism of pure electric vehicles Download PDFInfo
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- CN101865263B CN101865263B CN2010102045672A CN201010204567A CN101865263B CN 101865263 B CN101865263 B CN 101865263B CN 2010102045672 A CN2010102045672 A CN 2010102045672A CN 201010204567 A CN201010204567 A CN 201010204567A CN 101865263 B CN101865263 B CN 101865263B
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- Prior art keywords
- gear
- shaft
- automatic transmission
- pure electric
- planet carrier
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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
- F16H2200/0021—Transmissions for multiple ratios specially adapted for electric vehicles
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Abstract
The invention relates to a dedicated automatic transmission planetary gear mechanism of pure electric vehicles. The mechanism comprises a gear ring, a front planetary gear engaged with the gear ring is sleeved on one end of a planet carrier, and a rear planetary gear is sleeved on the planet carrier as well; a front central gear engaged with the front planetary gear is arranged on one end of a gear shaft, and is positioned in the gear ring; the gear shaft is an input shaft one end of which is inserted in an output shaft through a bearing, and the output shaft is provided with a rear central gear which is engaged with the rear planetary gear; the other end of the gear shaft is connected with one end of the planet carrier through a three-gear clutch C, and the planet carrier is provided with a forward-gear one-way clutch (F1) and a reverse-gear brake (B); and the outer side of the gear ring is connected with a one-way clutch F2. The efficiency of the mechanism is higher than the efficiency of an automatic transmission with the planetary gear mechanism of the fuel vehicle; and the mechanism has the advantages of simple gear arrangement structure, compact structure, small size and light weight, which accord with the principle of the lightweight design of vehicles.
Description
Technical field
The invention belongs to the automobile gearbox technical field, be specifically related to dedicated automatic transmission planetary gear mechanism of pure electric vehicles.
Background technique
At present, mainly by the speed changer " distortion " of fuel-engined vehicle, the electric vehicle that perhaps has is directly only used retarder to the pure electric automobile speed changer.Pure electric automobile does not have special-purpose automatic transmission, though the fuel-engined vehicle automatic transmission has superior performance, for electric vehicle, its volume, weight are too big on the one hand, directly apply to electric vehicle, make that complete vehicle weight increases too much; On the other hand, because motor characteristic and engine characteristics is different, pure electric automobile also there is no need to use the fuel-engined vehicle automatic transmission structure of complicacy so.Directly use existing automatic transmission just to cause unnecessary energy loss, reduced the energy utilization efficiency of pure electric automobile.
Summary of the invention
The problem of excessive, the complex structure of its volume, inefficiency when being applied to pure electric automobile in order to solve existing automatic transmission, the present invention provides a kind of dedicated automatic transmission planetary gear mechanism of pure electric vehicles.
The technical solution that realizes above-mentioned purpose is following:
A kind of dedicated automatic transmission planetary gear mechanism of pure electric vehicles comprises cabinet, and cabinet one side is provided with the gear ring 3 with interior engaging tooth, is enclosed within an end of planet carrier 7 with preceding planet wheel 8 skies of gear ring 3 engagement, also is set with back planet wheel 6 on the end of planet carrier; Be located at an end of wheel shaft 1 with the preceding sun gear 2 of preceding planet wheel 8 engagements, and preceding sun gear 2 is positioned at gear ring 3; Wheel shaft 1 is an input shaft, and the one of which end is plugged on the output shaft 5 through bearing, and output shaft 5 is provided with rear sun gear 4, rear sun gear 4 and 6 engagements of back planet wheel; The input end of wheel shaft 1 keeps off the end that clutch C are connecting planet carrier 7 through 3, and planet carrier is provided with a forward gear overrunning clutch F
1With the break B that reverses gear; The outside of gear ring 3 is connecting overrunning clutch F
2
Said output shaft 5 is a hollow shaft, and input shaft 1 places in the output shaft 5 through bearing.
Planet wheel 8 is a duplicate gear with back planet wheel 6 before said.
Useful technique effect of the present invention is embodied in following several aspect:
Compare with the automatic transmission case planetary gears with present automobile, pure electric automobile automatic speed variator casing planetary gears is simple, is suitable for the pure electric automobile special use.Reduce gear, gearshift executive component, had higher efficient.
1, efficient is higher than the automatic transmission of fuel-engined vehicle planetary gears form.The transfer route of power is equivalent to fixed shaft gear train when 2 retainings, and direct transferring power during 3 retainings is slowed down through main reducing gear, has only 1 retaining to be the planetary pinion transferring power.And the gearshift executive component is less, have only 4 gearshift executive components, and the power loss of gear drive is mainly from the frictional loss (accounting for 70%) of clutch friction plate group; Gear is also less, has so also reduced clutch friction loss and gear engagement loss.Therefore, the special-purpose speed changer structure setting type of pure electric automobile of the present invention has higher efficient.
2, the arrangement of gears form structure is simple, compact structure, and volume is little, weight is little, meets the light-weighted principle of automobile.
Description of drawings
Fig. 1 is a structural representation of the present invention,
Fig. 2 is a duplicate gear structural drawing among Fig. 1,
Fig. 3 is that output shaft cooperates sectional view with input shaft,
Fig. 4 is a kind of pure electric automobile dedicated automatic transmission structure diagram.
Embodiment
Below in conjunction with accompanying drawing, the present invention is done to describe further through embodiment.
Referring to Fig. 4, a kind of pure electric automobile dedicated automatic transmission structure diagram comprises fluid torque converter 10, cabinet 9 and dedicated automatic transmission planetary gear mechanism of pure electric vehicles, and this mechanism is installed in the cabinet 9.Referring to Fig. 1, cabinet one side is provided with the gear ring 3 with interior engaging tooth, is enclosed within an end of planet carrier 7 with preceding planet wheel 8 skies of gear ring 3 engagement, also is set with back planet wheel 6 on the end of planet carrier, and preceding planet wheel 8 is a duplicate gear with back planet wheel 6, sees Fig. 2.Be installed in an end of wheel shaft 1 (input shaft) with the preceding sun gear 2 of preceding planet wheel 8 engagements, and preceding sun gear 2 is positioned at gear ring 3; Wheel shaft 1 is an input shaft, and the one of which end is inserted in the output shaft 5 through bearing, and output shaft 5 is a hollow shaft, sees Fig. 3.Rear sun gear 4 is installed, rear sun gear 4 and 6 engagements of back planet wheel on the output shaft 5; The input end of wheel shaft 1 keeps off clutch C, the rotation of may command planet carrier through the end that 3 retaining clutch C are connecting planet carrier 7 through 3.Forward gear overrunning clutch F
1The other end that is being connected planet carrier 7 with the break B that reverses gear.The outside of gear ring 3 is connecting overrunning clutch F
2, overrunning clutch F
2Be installed in the cabinet 9.
With certain type pure electric automobile of reality exploitation is example, and selected gear number is 3, and fastest ratio is that 3.16 maximum transmission ratios are 7.27, middle gear 5.37.The main reducing gear velocity ratio is made as 3.16, and gear ratio of each retaining of planetary gears is: 1 retaining---2.30,2 retaining---1.70,3 retaining---1.Planetary pinion is joined tooth, and to calculate the number of teeth of each gear as shown in table 1.The actual transmission ratio that respectively keeps off that draws at last is: 1 retaining---2.34,2 retaining---1.72,3 retaining---1.
Table 1 wheel tooth numerical table
| Gear | Preceding sun gear | Preceding planet wheel | Gear ring | Rear sun gear | Back planet wheel |
| The number of teeth | 36 | 31 | 98 | 49 | 18 |
Shown in accompanying drawing 1 and accompanying drawing 4, a kind of pure electric automobile dedicated automatic transmission has used 4 gearshift executive components:
1 clutch, 1 break, 2 overrunning clutchs.
Table 2 pure electric automobile dedicated automatic transmission shifting element title and effect
| The element code name | Title | Effect |
| C | 3 retaining clutches | Can make power pass to planet carrier by input shaft |
| B | Break reverses gear | Fixed carrier |
| F 1 | The forward gear overrunning clutch | The locking planet carrier rotates counterclockwise |
| |
2 retaining overrunning clutchs | The locking gear ring rotates counterclockwise |
The executive component of each gear is as shown in table 3.
Table 3 dedicated automatic transmission planetary gear mechanism of pure electric vehicles gearshift executive component worksheet
Each keeps off the power transmission line explanation, and in conjunction with Fig. 1 and Fig. 4, input torque is clockwise.
1, reverse gear---R position (motor rotates counterclockwise)
During the R position, reverse clutch B work.
Power is sun gear 2 before wheel shaft 1 is passed to; Make it to rotate counterclockwise; The break B locking because planet carrier 7 is reversed gear, power is when passing to duplicate gear by sun gear, and duplicate gear can only clockwise rotate around its axis; Rear sun gear 4 just rotates counterclockwise under the effect of duplicate gear, realizes the vehicle sternway.
2, forward gear---D position (motor clockwise rotates)
(1) advance one the retaining (D
1Retaining)
D
1During retaining, forward gear overrunning clutch F
1Work.
Power is sun gear 2 before wheel shaft 1 is passed to, and makes it to clockwise rotate, and preceding sun gear drives the preceding planet wheel 8 that is meshed with it and rotates counterclockwise, and duplicate gear is rotated counterclockwise.Because rear sun gear 4 links to each other with duplicate gear during starting, breakaway force is big, when duplicate gear rotates counterclockwise, the trend that planet carrier 7 rotates counterclockwise that drives is arranged.And forward gear single clutch F
1Stop planet carrier to rotate counterclockwise, duplicate gear just drives rear sun gear 4 and clockwise rotates.
(2) advance two the retaining (D
2Retaining)
D
2During retaining, forward gear single clutch F
1, 2 retaining single clutch F
2Work.
Power is sun gear 2 before wheel shaft 1 is passed to, and makes it to clockwise rotate, and preceding sun gear drives the preceding planet wheel 8 that is meshed with it and rotates counterclockwise, and preceding planet wheel 8 drives gear ring 3 and rotates counterclockwise.And 2 retaining single clutch F
2 Stop gear ring 3 to rotate counterclockwise, planet carrier 7 just clockwise rotates, and duplicate gear just drives rear sun gear together with planet carrier 7 and clockwise rotates.
(2) ahead three retaining (D
3Retaining)
D
3During retaining, forward gear clutch C, 2 retaining single clutch F
2Work.
Power is sun gear 2 before wheel shaft 1 is passed to, and passes to planet carrier 7 through forward gear clutch C, and the rotation of duplicate gear is limited, and whole planetary gears rotates together, and input shaft is consistent with the output shaft rotating speed, and velocity ratio is 1.
3, climbing retaining---2 (motor clockwise rotates)
(1) climbing 1 retaining (2
1Retaining)
With the retaining (D that advances
1Retaining).
(2) climbing 2 retainings (2
2Retaining)
With the two retaining (D that advance
2Retaining).
Claims (3)
1. dedicated automatic transmission planetary gear mechanism of pure electric vehicles; It is characterized in that: comprise cabinet; Cabinet one side is provided with the gear ring (3) with interior engaging tooth; Be enclosed within an end of planet carrier (7) with preceding planet wheel (8) sky of gear ring (3) engagement, also be set with back planet wheel (6) on the end of planet carrier; Be located at an end of wheel shaft (1) with the preceding sun gear (2) of preceding planet wheel (8) engagement, and preceding sun gear (2) is positioned at gear ring (3); Wheel shaft (1) is an input shaft, and the one of which end is plugged in the output shaft (5) through bearing, and output shaft (5) is provided with rear sun gear (4), rear sun gear (4) and back planet wheel (6) engagement; The input end of wheel shaft (1) keeps off the end that clutch C are connecting planet carrier (7) through 3, and planet carrier is provided with a forward gear overrunning clutch F
1With the break B that reverses gear; The outside of gear ring (3) is connecting overrunning clutch F
2
When the main reducing gear velocity ratio is made as 3.16, the gear number of said dedicated automatic transmission planetary gear mechanism of pure electric vehicles is 3, and each keeps off the actual transmission ratio and is respectively: top gear is 1, and middle apron is 1.72, and minimum retaining is 2.34.
2. a kind of dedicated automatic transmission planetary gear mechanism of pure electric vehicles according to claim 1 is characterized in that: said output shaft (5) is a hollow shaft, and input shaft (1) places in the output shaft (5) through bearing.
3. a kind of dedicated automatic transmission planetary gear mechanism of pure electric vehicles according to claim 1 is characterized in that: planet wheel (8) and back planet wheel (6) are duplicate gear before said.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102045672A CN101865263B (en) | 2010-06-18 | 2010-06-18 | Dedicated automatic transmission planetary gear mechanism of pure electric vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102045672A CN101865263B (en) | 2010-06-18 | 2010-06-18 | Dedicated automatic transmission planetary gear mechanism of pure electric vehicles |
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| Publication Number | Publication Date |
|---|---|
| CN101865263A CN101865263A (en) | 2010-10-20 |
| CN101865263B true CN101865263B (en) | 2012-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102045672A Active CN101865263B (en) | 2010-06-18 | 2010-06-18 | Dedicated automatic transmission planetary gear mechanism of pure electric vehicles |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518195B (en) * | 2011-11-15 | 2014-06-04 | 上海科勒电子科技有限公司 | Driving device for spraying pipe and spraying pipe with same |
| CN102878259B (en) * | 2012-09-28 | 2015-11-11 | 长城汽车股份有限公司 | A kind of many gears automatic transmission and power assembly |
| CN105736654A (en) * | 2016-04-20 | 2016-07-06 | 长安大学 | Two-stage gearbox of electric vehicle |
| CN106499779B (en) * | 2016-11-04 | 2019-03-01 | 浙江大众齿轮有限公司 | A kind of Multilayer-tooth geared automated gearbox based on centrifugal force |
| CN106523606B (en) * | 2016-11-04 | 2019-03-15 | 浙江大众齿轮有限公司 | A kind of Multilayer-tooth geared automated gearbox based on scroll spring |
| CN110296194B (en) * | 2019-07-01 | 2022-05-31 | 重庆大学 | Planetary three-gear shifting device |
| KR102405909B1 (en) * | 2020-07-27 | 2022-06-08 | 현대모비스 주식회사 | Power transmission device and automobile including the same |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2962071B2 (en) * | 1992-09-11 | 1999-10-12 | トヨタ自動車株式会社 | Drive for electric vehicles |
| CN2661479Y (en) * | 2003-04-24 | 2004-12-08 | 北京理工大学 | Single planet row two-gear transmission case for electric automobile |
| JP2006311784A (en) * | 2005-03-29 | 2006-11-09 | Nissan Motor Co Ltd | Vehicle power transmission mechanism for electric vehicles |
| CN100532882C (en) * | 2007-12-24 | 2009-08-26 | 李万民 | Commonly engaged gear stepless transmission |
| CN201354834Y (en) * | 2009-03-02 | 2009-12-02 | 丛俊贞 | Deceleration/variable speed device |
| CN201696565U (en) * | 2010-06-18 | 2011-01-05 | 黄康 | Automatic speed changer planetary gear mechanism specially used for pure electric automobile |
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| CN101865263A (en) | 2010-10-20 |
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