CN102582426A - Four-wheel driving power assembly of electric car - Google Patents
Four-wheel driving power assembly of electric car Download PDFInfo
- Publication number
- CN102582426A CN102582426A CN201210091663XA CN201210091663A CN102582426A CN 102582426 A CN102582426 A CN 102582426A CN 201210091663X A CN201210091663X A CN 201210091663XA CN 201210091663 A CN201210091663 A CN 201210091663A CN 102582426 A CN102582426 A CN 102582426A
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- gear
- epicyclic reduction
- dynamic assembly
- differential casing
- driven car
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Abstract
The invention discloses a four-wheel driving power assembly of an electric car, which relates to the technical field of electric vehicles and is designed for saving the space and lightening the weight. The four-wheel driving power assembly comprises a motor, a speed reducer, a differential and a power divider which are connected in sequence, wherein a rotor of the motor is fixedly connected with an input shaft of the speed reducer, an output shaft of the speed reducer is fixedly connected with a differential shell of the differential, the differential shell is connected with a differential mechanism arranged in the differential mechanism shell, the differential mechanism is connected with a first half shaft and a second half shaft which can drive two of the wheels of the electric car, the power divider comprises an input gear and an output gear which are meshed with each other, the input gear stretches out of the differential mechanism shell and is fixedly connected with the differential mechanism shell, and the output gear is connected with a driving axle which can drive the other two wheels. The four-wheel driving power assembly is suitable for being used on the electric vehicles.
Description
Technical field
The present invention relates to the elec. vehicle technical field, relate in particular to a kind of four wheel drive dynamic assembly of battery-driven car.
Background technology
The urban atmospheric pollution of China has become the problem that can not be ignored now, and the discharging of vehicle is one of primary pollution source.In addition, along with expanding economy, increasing vehicle is by a large amount of place in operations, and oil resources will face wretched insufficiency.Therefore, development use cleaning new energy vehicle for example elec. vehicle be significant, long-range strategic concerns.
Present stage, elec. vehicle was in the period of a fast development, and lot of domestic and international full-sized car enterprise is all at the elec. vehicle of researching and developing oneself.Wherein, the conventional electric vehicle is f-w-d or back-wheel drive, and the dynamic assembly of this type of drive comprises motor, retarder and diff etc.For example in f-w-d; Can be extended with respectively from the two ends of diff and front vehicle wheel bonded assembly left half axle and right axle shaft; Motor outputs power to retarder in the course of the work; Retarder outputs power to diff, and diff outputs power to left half axle and right axle shaft, thereby drives the front vehicle wheel motion.
In order to realize four wheel drive; Generally be behind diff, to connect part-time case; Part-time case is connected with drive axle; The effect of part-time case is that the power of diff output is outputed to drive axle in the front vehicle wheel for example exporting to, thereby drives and the motion of drive axle bonded assembly rear wheel, reaches the purpose that four-wheel drives simultaneously.
At present; Said part-time case is that input gear with said part-time case is connected with the differential casing of said diff side by side with a kind of connection mode of said diff in dynamic assembly; Make said input gear and said differential casing in dynamic assembly, all need take certain space, increased the overall space of dynamic assembly; Said in addition input gear need be contained in the part-time case housing of said part-time case, and said part-time case housing has certain volume and weight, therefore said part-time case not only taken dynamic assembly than large space, and increased the weight of dynamic assembly.
Summary of the invention
Embodiments of the invention provide a kind of four wheel drive dynamic assembly of battery-driven car, can practice thrift the space of dynamic assembly and alleviate the weight of dynamic assembly.
For achieving the above object, embodiments of the invention adopt following technical scheme:
A kind of four wheel drive dynamic assembly of battery-driven car comprises bonded assembly motor, retarder, diff and part-time case successively; The rotor of said motor is captiveed joint with said input shaft of speed reducer; The output shaft of said retarder is captiveed joint with the differential casing of said diff; Said differential casing connection is located at said differential casing in-to-in box of tricks; Said box of tricks connects can drive wherein first semiaxis and second semiaxis of two wheels, and wherein, said part-time case comprises intermeshing input gear and output gear; Said input gear stretches out said differential gear box external and captives joint with said differential casing, and said output gear connects the drive axle that can drive all the other two wheels.
Further, the rotor of said motor is a hollow structure, and said first semiaxis or second semiaxis pass the hollow space of said rotor.
Further, said retarder comprises epicyclic reduction gear, and said epicyclic reduction gear comprises sun wheel, satellite gear, pinion carrier and gear ring; Said sun wheel is a power intake, and said pinion carrier is a clutch end.
Said retarder comprises at least two epicyclic reduction gears of bonded assembly successively, the sun wheel of a said epicyclic reduction gear behind the pinion carrier captive joint of previous said epicyclic reduction gear.
Wherein, the sun wheel of the pinion carrier of previous said epicyclic reduction gear and a back said epicyclic reduction gear is structure as a whole.
The sun wheel of said epicyclic reduction gear is foremost captiveed joint with the rotor of said motor, and the pinion carrier of the said epicyclic reduction gear of rearmost end is captiveed joint with said differential casing.
Wherein, the pinion carrier of the said epicyclic reduction gear of rearmost end and said differential casing are structure as a whole.
Said input gear and the coaxial setting of said differential casing.
Wherein, said input gear and the captive joint of said differential casing are that fastener is connected or welds.
In addition, the input gear of said part-time case and output gear are screw bevel gear, and the axis of said input gear and said output gear is vertical each other.
The four wheel drive dynamic assembly of the battery-driven car that the embodiment of the invention provides; Said part-time case comprises intermeshing input gear and output gear; Said input gear stretches out said differential gear box external and captives joint with said differential casing, and its beneficial effect that brings is, because said input gear stretches out said differential gear box external and captives joint with said differential casing; Therefore said input gear and said differential casing form an integral structure; And then not only make said input gear and said differential casing in dynamic assembly, take same space, and can also omit the setting of part-time case housing, make that said part-time case volume reduces, weight saving; Therefore practice thrift the overall space of dynamic assembly, also alleviated the weight of dynamic assembly.
Description of drawings
Fig. 1 is the structural representation of the four wheel drive dynamic assembly of embodiment of the invention battery-driven car;
Fig. 2 is a kind of improved structural representation of the four wheel drive dynamic assembly of embodiment of the invention battery-driven car;
Fig. 3 is a further improvement structural representation embodiment illustrated in fig. 2;
Fig. 4 is the structural representation of embodiment of the invention preferred version.
Reference numeral:
The 1-motor, 10-rotor, 2-retarder, 20,20a, 20b-sun wheel, 21-gear ring; The 22-satellite gear, 23,23a, 23b-pinion carrier, 3-diff, 30-differential casing, 31-compensating-gear shaft; The 32-planetary wheel, 33-first axle side gear (left half axle gear), 34-second axle side gear (right axle shaft gear), 35-first semiaxis, 36-second semiaxis; The 4-part-time case, 40-input gear, 41-output gear, 5a, 5b-wheel
The specific embodiment
Be described in detail below in conjunction with the four wheel drive dynamic assembly of accompanying drawing the battery-driven car of the embodiment of the invention.
As shown in Figure 1, be a specific embodiment of the four wheel drive dynamic assembly of battery-driven car of the present invention.Dynamic assembly described in the present embodiment comprises bonded assembly motor 1, retarder 2, diff 3 and part-time case 4 successively; The rotor 10 of said motor 1 is captiveed joint with the input shaft of said retarder 2; The output shaft of said retarder 2 is captiveed joint with the differential casing 30 of said diff 3; Said differential casing 30 connections are located at said differential casing 30 in-to-in boxs of tricks; Said box of tricks connects can drive wherein first semiaxis 35 and second semiaxis 36 of two wheel 5a, and wherein, said part-time case 4 comprises intermeshing input gear 40 and output gear 41; Said input gear 40 stretches out said differential casing 30 outsides and captives joint with said differential casing 30, and said output gear 41 connects the drive axle that can drive all the other two wheel 5b.
The four wheel drive dynamic assembly of the elec. vehicle that the embodiment of the invention provides; Said part-time case 4 comprises intermeshing input gear 40 and output gear 41; Said input gear 40 stretches out said differential casing 30 outsides and captives joint with said differential casing 30, and its beneficial effect that brings is, because said input gear 40 stretches out said differential casing 30 outsides and captives joint with said differential casing 30; Therefore said input gear 40 forms an integral structure with said differential casing 30; And then not only make said input gear 40 in dynamic assembly, take same space with said differential casing 30, and can also omit the setting of part-time case housing, make that said part-time case 4 volumes reduce, weight saving; Therefore practice thrift the overall space of dynamic assembly, also alleviated the weight of dynamic assembly.
As shown in Figure 2, be a kind of improved structural representation of the four wheel drive dynamic assembly of embodiment of the invention battery-driven car.Can know by Fig. 2; The rotor 10 of said motor 1 is a hollow structure; Said first semiaxis 35 passes the hollow space of said motor 1 rotor 10; Make motor 1 and diff 3 be arranged in like this, not only make the compact conformation of dynamic assembly, also further practiced thrift dynamic assembly single-piece space with on the bar axis.Certainly be not limited thereto, in other embodiments of the invention, also can make second semiaxis 36 pass the hollow space of the rotor 10 of said motor 1.
As shown in Figure 3, be further improvement structural representation embodiment illustrated in fig. 2.In the embodiment shown in fig. 3, said retarder 2 comprises epicyclic reduction gear, and said epicyclic reduction gear comprises sun wheel 20, satellite gear 22, pinion carrier 23 and gear ring 21; Said sun wheel 20 is a power intake, and said pinion carrier 23 is a clutch end.Can know by Fig. 1 and Fig. 2; The input shaft and the output shaft of the retarder 2 before improving are parallel to each other; Cause retarder 2 volumes bigger than normal, therefore also increased the overall space of dynamic assembly, and the input shaft of the epicyclic reduction gear after improving and output shaft are that the edge is with the bar axis arranged; Make that the volume of epicyclic reduction gear is less, therefore reduced the overall space of dynamic assembly; In addition, owing to have the problem of distance of shaft centers, driving force brachium in the process of transferring power in the retarder 2 before improving; Cause the generation of bigoted power; And then produce big noise, and influence the life-span of gear, reduced the comfort level that the passenger rides; And therefore epicyclic reduction gear avoids power generation of bigoted power in the transmittance process in retarder owing to there is not the distance of shaft centers problem.
Further; Said retarder 2 can comprise at least two epicyclic reduction gears of bonded assembly successively; The sun wheel of a said epicyclic reduction gear behind the pinion carrier captive joint of previous said epicyclic reduction gear because the transmitting ratio of an epicyclic reduction gear is 2.5-5, therefore can not satisfy actual demand; So adopt two above epicyclic reduction gears to increase the transmitting ratio of retarder 2; As shown in Figure 4, be the preferred version of the embodiment of the invention, said retarder 2 is connected to form by two epicyclic reduction gears successively.
Can find out that from Fig. 4 the sun wheel 20b of the pinion carrier 23a of previous said epicyclic reduction gear and a back said epicyclic reduction gear is structure as a whole, and can simplify manufacture craft like this, reduce cost of manufacture.
Can know that according to Fig. 4 the sun wheel of said epicyclic reduction gear is foremost captiveed joint with the rotor 10 of said motor 1, the pinion carrier 23b of the said epicyclic reduction gear of rearmost end is captiveed joint with said differential casing 30.The input gear 40 that has guaranteed motor 1, retarder 2, diff 3 and part-time case 4 like this is along with the bar axis arranged, has reduced the overall dimensions of dynamic assembly to a great extent, and has saved a lot of spaces, so that more reasonably arrange other accessory; Further, power is delivered to the problem that does not have distance of shaft centers in the process of input gear 40 of part-time case 4 by motor 1, therefore avoided the generation of bigoted power, not only reduces noise, has prolonged the life-span of gear, has also improved the comfort level that the passenger rides.
Refer again to Fig. 4, the pinion carrier 23b of the said epicyclic reduction gear of rearmost end and said differential casing 30 are structure as a whole, and can simplify manufacture craft like this, reduce cost of manufacture.
Like Fig. 1-shown in Figure 4, said input gear 40 and said differential casing 30 coaxial settings so not only can reduce said input gear 40 and said differential casing 30 occupation space, can also avoid the bigoted power that produces owing to disalignment.
For example, the captive joint of input gear described in the embodiment of the invention 40 and said differential casing 30 can be connected or welds for fastener.Wherein, described fastener connects and can connect perhaps riveted joint etc. for screw.
In addition; The input gear 40 and the output gear 41 of said part-time case 4 can be screw bevel gear; And the axis of said input gear 40 and said output gear 41 is vertical each other; Like this in power transmission process and since output gear can play increase reverse to effect, and then power is delivered to drive axle by output gear 41.
In addition; The structure of box of tricks under the brief account; Can know that from any accompanying drawing of Fig. 1-Fig. 4 axial two ends are respectively equipped with first axle side gear 33 (being left half axle gear) and second axle side gear 34 (being the right axle shaft gear) in the differential casing 30, first axle side gear 33 is captiveed joint with first semiaxis 35; Second axle side gear 34 is captiveed joint with second semiaxis 36; Differential casing 30 internal fixation have and its axial vertical compensating-gear shaft 31, and the two ends up and down of compensating-gear shaft 31 are respectively equipped with two planetary wheels 32, planetary wheel 32 and left half axle gear 33 and 34 engagements of right axle shaft gear.
Introduce the principle of work of embodiment of the invention preferred version below in conjunction with Fig. 4: vehicle is when starting; The rotor 10 of motor 1 begins to rotate; The sun wheel 20a of rotor 10 this moment in previous epicyclic reduction gear rotates, owing to the gear ring 21 of epicyclic reduction gear 2 is captiveed joint with reducer shell, so rotate with the pinion carrier 23a of satellite gear 22a captive joint; And the sun wheel 20b that drives a back epicyclic reduction gear follows rotation; And then make pinion carrier 23b begin to rotate, because pinion carrier 23b is structure as a whole with differential casing 30, so differential casing 30 is understood and rotated with pinion carrier 23b; In differential casing 30 rotation processes; Planetary wheel 32 rotates thereupon together; And rotate with right axle shaft gear 34 with planetary wheel 32 ingear left half axle gears 33, make the semiaxis 35 of winning also begin to rotate, and then drive front vehicle wheel 5a and move with second semiaxis 36; Simultaneously; Input gear 40 with differential casing 30 captive joints also rotates, and this moment, power outputed to part-time case 4 by diff 3, and output power to drive axle by output gear 41; And then driving moves with drive axle bonded assembly rear wheel 5b, finally realizes four wheel drive.
The above; Be merely the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technical personnel of being familiar with the present technique field is in the technical scope that the present invention discloses; Can expect easily changing or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion by said protection domain with claim.
Claims (10)
1. the four wheel drive dynamic assembly of a battery-driven car comprises bonded assembly motor, retarder, diff and part-time case successively; The rotor of said motor is captiveed joint with said input shaft of speed reducer; The output shaft of said retarder is captiveed joint with the differential casing of said diff; Said differential casing connection is located at said differential casing in-to-in box of tricks; Said box of tricks connects can drive wherein first semiaxis and second semiaxis of two wheels, it is characterized in that
Said part-time case comprises intermeshing input gear and output gear, and said input gear stretches out said differential gear box external and captives joint with said differential casing, and said output gear connects the drive axle that can drive all the other two wheels.
2. the four wheel drive dynamic assembly of battery-driven car according to claim 1 is characterized in that, the rotor of said motor is a hollow structure, and said first semiaxis or second semiaxis pass the hollow space of said rotor.
3. the four wheel drive dynamic assembly of battery-driven car according to claim 2 is characterized in that, said retarder comprises epicyclic reduction gear, and said epicyclic reduction gear comprises sun wheel, satellite gear, pinion carrier and gear ring; Said sun wheel is a power intake, and said pinion carrier is a clutch end.
4. the four wheel drive dynamic assembly of battery-driven car according to claim 3; It is characterized in that; Said retarder comprises at least two epicyclic reduction gears of bonded assembly successively, the sun wheel of a said epicyclic reduction gear behind the pinion carrier captive joint of previous said epicyclic reduction gear.
5. the four wheel drive dynamic assembly of battery-driven car according to claim 4 is characterized in that, the sun wheel of the pinion carrier of previous said epicyclic reduction gear and a back said epicyclic reduction gear is structure as a whole.
6. the four wheel drive dynamic assembly of battery-driven car according to claim 4; It is characterized in that; The sun wheel of said epicyclic reduction gear is foremost captiveed joint with the rotor of said motor, and the pinion carrier of the said epicyclic reduction gear of rearmost end is captiveed joint with said differential casing.
7. the four wheel drive dynamic assembly of battery-driven car according to claim 6 is characterized in that, the pinion carrier of the said epicyclic reduction gear of rearmost end and said differential casing are structure as a whole.
8. according to the four wheel drive dynamic assembly of each described battery-driven car of claim 1-7, it is characterized in that said input gear and the coaxial setting of said differential casing.
9. according to the four wheel drive dynamic assembly of each described battery-driven car of claim 1-7, it is characterized in that said input gear and the captive joint of said differential casing are that fastener is connected or welds.
10. according to the four wheel drive dynamic assembly of each described battery-driven car of claim 1-7, it is characterized in that the input gear of said part-time case and output gear are screw bevel gear, the axis of said input gear and said output gear is vertical each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210091663XA CN102582426A (en) | 2012-03-30 | 2012-03-30 | Four-wheel driving power assembly of electric car |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210091663XA CN102582426A (en) | 2012-03-30 | 2012-03-30 | Four-wheel driving power assembly of electric car |
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| CN102582426A true CN102582426A (en) | 2012-07-18 |
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| CN201210091663XA Pending CN102582426A (en) | 2012-03-30 | 2012-03-30 | Four-wheel driving power assembly of electric car |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104309477A (en) * | 2014-09-28 | 2015-01-28 | 长城汽车股份有限公司 | Transfer case, power transmission system and vehicle |
| CN105539112A (en) * | 2015-12-28 | 2016-05-04 | 北京新能源汽车股份有限公司 | Power assembly and vehicle provided with same |
| CN106523672A (en) * | 2016-12-01 | 2017-03-22 | 徐州科源液压股份有限公司 | Rear axle one-piece type speed reducer |
| CN106671771A (en) * | 2015-11-09 | 2017-05-17 | 博格华纳公司 | Electric all-wheel drive with two-speed double reduction planetary |
| CN106740076A (en) * | 2017-01-13 | 2017-05-31 | 北京新能源汽车股份有限公司 | A kind of power assembly and electric automobile |
| CN106808989A (en) * | 2017-03-03 | 2017-06-09 | 中国第汽车股份有限公司 | A kind of pure electric vehicle double-motor driving device |
| CN107128171A (en) * | 2017-05-24 | 2017-09-05 | 谷林波 | A kind of new-energy automobile power assembly |
| CN109099131A (en) * | 2018-08-30 | 2018-12-28 | 上海迪鲲机电科技有限公司 | A kind of electric drive transmission device and control method for electric vehicle |
| CN110566650A (en) * | 2018-06-06 | 2019-12-13 | 舍弗勒技术股份两合公司 | differential and vehicle comprising same |
| CN110962506A (en) * | 2018-09-30 | 2020-04-07 | 比亚迪股份有限公司 | Drive axle and vehicle with same |
| CN110962505A (en) * | 2018-09-30 | 2020-04-07 | 比亚迪股份有限公司 | Drive axle and vehicle with same |
| CN110962507A (en) * | 2018-09-30 | 2020-04-07 | 比亚迪股份有限公司 | Drive axle and vehicle with same |
| WO2022166952A1 (en) * | 2021-02-07 | 2022-08-11 | 中国第一汽车股份有限公司 | Coaxial electric drive system and vehicle |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104309477B (en) * | 2014-09-28 | 2017-02-15 | 长城汽车股份有限公司 | Transfer case, power transmission system and vehicle |
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| CN106671771B (en) * | 2015-11-09 | 2021-12-21 | 博格华纳公司 | Electric all-wheel drive device with double-speed double-stage planetary gear reducer |
| CN106671771A (en) * | 2015-11-09 | 2017-05-17 | 博格华纳公司 | Electric all-wheel drive with two-speed double reduction planetary |
| CN105539112A (en) * | 2015-12-28 | 2016-05-04 | 北京新能源汽车股份有限公司 | Power assembly and vehicle provided with same |
| CN106523672A (en) * | 2016-12-01 | 2017-03-22 | 徐州科源液压股份有限公司 | Rear axle one-piece type speed reducer |
| CN106740076A (en) * | 2017-01-13 | 2017-05-31 | 北京新能源汽车股份有限公司 | A kind of power assembly and electric automobile |
| CN106808989A (en) * | 2017-03-03 | 2017-06-09 | 中国第汽车股份有限公司 | A kind of pure electric vehicle double-motor driving device |
| CN107128171A (en) * | 2017-05-24 | 2017-09-05 | 谷林波 | A kind of new-energy automobile power assembly |
| CN107128171B (en) * | 2017-05-24 | 2023-09-29 | 杭州时代电动科技有限公司 | New energy automobile power assembly |
| CN110566650A (en) * | 2018-06-06 | 2019-12-13 | 舍弗勒技术股份两合公司 | differential and vehicle comprising same |
| CN109099131A (en) * | 2018-08-30 | 2018-12-28 | 上海迪鲲机电科技有限公司 | A kind of electric drive transmission device and control method for electric vehicle |
| CN110962507A (en) * | 2018-09-30 | 2020-04-07 | 比亚迪股份有限公司 | Drive axle and vehicle with same |
| CN110962505A (en) * | 2018-09-30 | 2020-04-07 | 比亚迪股份有限公司 | Drive axle and vehicle with same |
| CN110962506A (en) * | 2018-09-30 | 2020-04-07 | 比亚迪股份有限公司 | Drive axle and vehicle with same |
| WO2022166952A1 (en) * | 2021-02-07 | 2022-08-11 | 中国第一汽车股份有限公司 | Coaxial electric drive system and vehicle |
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Application publication date: 20120718 |