CN108454393A - One kind two keeps off planet speed-change electric drive axle assembly - Google Patents
One kind two keeps off planet speed-change electric drive axle assembly Download PDFInfo
- Publication number
- CN108454393A CN108454393A CN201810296641.4A CN201810296641A CN108454393A CN 108454393 A CN108454393 A CN 108454393A CN 201810296641 A CN201810296641 A CN 201810296641A CN 108454393 A CN108454393 A CN 108454393A
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- China
- Prior art keywords
- gear
- combined cover
- sun
- hollow shaft
- planetary gear
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
- B60K17/16—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing
- B60K17/165—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing provided between independent half axles
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Retarders (AREA)
Abstract
In order to improve power and torque request of the drive system to driving motor, optimization transmission system matching is unreasonable and leads to problems such as driving motor that cannot preferably operate in high efficient area, and the present invention proposes one kind two and keeps off planet speed-change electric drive axle assembly.The driving axis is mainly made of speed changer, coaxially arranged hollow shaft motor and differential mechanism, is obtained two different reduction ratio by operating combined cover, is used Planetary Gear Transmission to increase the integrated level of reduction ratio and system.The electronic rear bridge driven system has the advantages that simple in structure, compact in design, speed ratio is adjustable, and integrated level is high, can be very good the dynamic property and economy that improve automobile.
Description
Technical field
The present invention relates to electric vehicles to drive transmission field, and in particular to one kind two keeps off planet speed-change electric drive axle assembly.
Background technology
With higher and higher to the attention degree of energy deficiency and problem of environmental pollution in the world, electric vehicle conduct
The free of contamination convenient vehicles have obtained unprecedented development.Domestic and international major car manufactures have put into a large amount of fund
Exploitation and correlative study for electric vehicle.Drive axle as the core component in power transmission system for electric vehicle it
One, while influencing vehicle economy and dynamic property, also contribute to driving and the ride experience of driver and passenger.Therefore, to electricity
The research of drive axle has critically important realistic meaning.Domestic traditional drive system of electric automobile mostly use it is simple in structure, at
This lower single-stage is fixed, and than deceleration device, single transmission ratio can cause driving motor that cannot preferably operate in high efficient area,
To cause energy consumption to increase, the dynamic property and economy of pure electric automobile are reduced.
More gears are the inexorable trends of electric automobile gear device development, and different gear ratio can preferably play motor spy
Property, requirement of the automobile to motor performance is reduced, is conducive to reduce motor volume, weight and reduces cost.But it is applied at present
Two gear variable speed drive systems be mostly transformed based on conventional transmissions, mostly use multiple rows of fixed axis gear realization double reduction greatly,
Main motor, differential mechanism and speed changer are arranged using non-coaxial, cause entire drive axle longitudinal space to occupy big, integrated level
It is low.How complicated using the driving system structure of Planetary Gear Transmission, gearshift is not easy to operate, and manufacturing cost is high.
Invention content
It is occupied greatly to solve above-mentioned prior art longitudinal space, the technical problems such as integrated level is low, the present invention proposes one kind
Speed change electric drive axle assembly is kept off using the two of Planetary Gear Transmission, which has the adjustable function of speed ratio, reduce to electricity
The requirement of machine performance improves the working efficiency of motor, improves the dynamic property of automobile and economical, while entire electric drive assembly is full
The features such as foot is compact-sized, and integrated level is high, and occupied space is few, and manufacturing cost is low.It is specific as follows：
One kind two keep off planet speed-change electric drive axle assembly, including share planetary gear, fixed gear ring, bottom gear planetary gear, connecting shaft,
Top gear planetary gear, combined cover, hollow shaft motor, left half axle, revolver, top gear sun gear, bottom gear sun gear, reducing gearbox
Body, planet carrier, differential mechanism, right axle shaft and right wheel；
The combined cover inner ring is connected by spline with motor output shaft, and torque is transmitted, and is arranged on the left of top gear sun gear,
A hollow shaft is stretched out on the right side of combined cover, has a pair of of combined cover conjunction gear, combined cover conjunction gear to be arranged in top gear too in hollow shaft
Between sun wheel and bottom gear sun gear, when shift fork or so is stirred, drive hollow shaft and combined cover conjunction gear move left and right, when to the left
When mobile tooth engagement, combined cover conjunction gear and bottom gear when moving right are combined on combined cover conjunction gear and top gear sun gear
Tooth engagement is combined on sun gear, to achieve the effect that switch high, low speed gear；The top gear sun gear passes through rolling bearing
Empty set is in the hollow shaft that combined cover stretches out, with top gear planetary gear engaged transmission；The bottom gear sun gear passes through the axis of rolling
Empty set is held on the left side output shaft of differential mechanism, with bottom gear planetary gear engaged transmission；The top gear planetary gear, bottom gear row
Star-wheel, connecting shaft share planetary gear and are integrated design, the connecting shaft by rolling bearing empty set on planet carrier,
It can be rotated around own axes relative to planet carrier, it also can be in the case where top gear planetary gear or bottom gear planetary gear drive around high speed
It keeps off the sunshine wheel or bottom gear sun gear revolves round the sun；The planet carrier is defeated as top gear planet row and bottom gear planet row
Go out, is connected firmly with the outer housing of differential mechanism, driving differential mechanism rotation；The shared planetary gear is engaged with fixed gear ring；The differential
The left side output shaft of device passes through the hollow space of hollow shaft motor, by forming revolute pair between rolling bearing and hollow shaft motor
Connection, while ensureing that hollow shaft motor and differential mechanism are coaxially arranged；The left half axle is connect by universal joint with revolver；The difference
The right side of fast device shell is by forming revolute pair connection between rolling bearing and reducer shell.
The advantage of the invention is that：The present invention is using hollow shaft motor as power source, it can be achieved that hollow shaft motor, differential mechanism
It is coaxially arranged, the compactedness of total is improved, the arrangement space of drive axle is greatly saved so that entire drive system
It is compact-sized, integrated level is high, compact-sized gearbox makes motor and the size of coupled each system be reduced,
Weight is alleviated, to greatly reduce manufacturing cost；
This driving axis can realize two gear speed changes, in conjunction with the electric vehicle hollow shaft motor with good speed adjusting performance, in being
Increase a gear ratio outside empty spindle motor amount of exports, the accelerating ability of vehicle can be improved, such as mixes motor-car for plug-in
Its electric-only mode mileage travelled can be increased simultaneously.Performance requirement of the drive system to driving motor is reduced, manufacture is reduced
Cost improves the dynamic property and economy of automobile；
The present invention realizes two gear speed changes using planetary gear, and simple in structure, shift execution machine uses combined cover, arrangement to be easy, can
Strong operability.Meanwhile using planetary gear speed-reduction, large range of reduction ratio design may be implemented in transmission efficiency, general
Property is strong.
Description of the drawings
Fig. 1 is the structure diagram that the present invention two keeps off planet speed-change electric drive axle assembly；
Fig. 2 is that the present invention two keeps off planet speed-change electric drive axle assembly top gear status architecture schematic diagram；
Fig. 3 is that the present invention two keeps off planet speed-change electric drive axle assembly low speed gear status architecture schematic diagram.
Reference sign：
1-shares planetary gear；2-fixed gear rings；3-bottom gear planetary gears；4-connecting shafts；5-top gear planetary gears；6-knots
Trap；7-hollow shaft motors；8-left half axles；9-revolvers；10-top gear sun gears；11-bottom gear sun gears；12-subtract
Fast device shell；13-planet carriers；14-differential mechanisms；15-right axle shafts；16-right wheels.
Specific implementation mode
Below in conjunction with attached drawing, the invention will be further described.
As shown in Figure 1, the electronic rear axle is mainly by sharing planetary gear 1, fixed gear ring 2, bottom gear planetary gear 3, connecting shaft
4, top gear planetary gear 5, combined cover 6, hollow shaft motor 7, left half axle 8, revolver 9, top gear sun gear 10, bottom gear sun gear
11, the compositions such as reducer shell 12, planet carrier 13, differential mechanism 14, right axle shaft 15, right wheel 16.
In Fig. 1,6 inner ring of the combined cover is connected by spline with the output shaft of hollow shaft motor 7, transmits torque, cloth
It sets in 10 left side of top gear sun gear, 6 right side of combined cover stretches out a hollow shaft, has a pair of of combined cover conjunction gear in hollow shaft, tie
Trap conjunction gear is arranged between top gear sun gear 10 and bottom gear sun gear 11, when shift fork or so is stirred, drives hollow shaft
It is moved left and right with combined cover conjunction gear, tooth engagement is combined on combined cover conjunction gear and top gear sun gear 10 when being moved to the left,
Tooth engagement is combined on combined cover conjunction gear and bottom gear sun gear 11 when moving right, to reach switching high, low speed gear
Effect.
The top gear sun gear 10 by rolling bearing empty set in the hollow shaft that combined cover 6 stretches out, with top gear row
5 engaged transmission of star-wheel；The bottom gear sun gear 11 by rolling bearing empty set on the left side output shaft of differential mechanism 14, and it is low
3 engaged transmission of speed gear planetary gear；The top gear planetary gear 5, bottom gear planetary gear 3, connecting shaft 4, shared planetary gear 1 are integrated
Change structure design, the connecting shaft 4 by rolling bearing empty set on planet carrier 13, can be around own axes relative to planet carrier 13
It is rotated, can also be keeped off the sunshine around top gear sun gear 10 or low speed in the case where top gear planetary gear 5 or bottom gear planetary gear 3 drive
Wheel 11 revolves round the sun；Output of the planet carrier 13 as top gear planet row and bottom gear planet row, it is outer with differential mechanism 14
Shell connects firmly, and driving differential mechanism 14 rotates；The shared planetary gear 1 is engaged with fixed gear ring 2, and the fixed gear ring 2 is fixed in
On reducer shell 12.
The left side output shaft of the differential mechanism 14 pass through hollow shaft motor 7 hollow space, by rolling bearing with it is hollow
Revolute pair connection is formed between spindle motor 7, is connect with universal joint with left half axle 8, while ensureing hollow shaft motor 7 and differential mechanism 14
Coaxially；The left half axle 8 is connect by universal joint with revolver 9；The right side of the differential mechanism shell passes through rolling bearing and deceleration
Revolute pair connection is formed between device shell 12,14 right side output shaft of the differential mechanism is connect with right axle shaft 15 by universal joint, institute
Right axle shaft 15 is stated to connect by universal joint with right wheel 16.
The high speed and local-speed mode of operation of the electric drive rear axle are as follows：
1. top gear operating mode：
As shown in Fig. 2, under pattern work, the transmission torque synchronous with the engagement of top gear sun gear 10 of combined cover 6, power is therefrom
Empty spindle motor 7 exports, and by combined cover 6, top gear sun gear 10, top gear planetary gear 5, connecting shaft 4, shares planetary gear 1, row
Carrier 13, differential mechanism 14, left half axle 8, right axle shaft 15 are transmitted to revolver 9 and right wheel 16 respectively, and in this mode, low speed is keeped off the sunshine
Wheel 10 and bottom gear planetary gear 5 are in idling conditions.
2. bottom gear operating mode：
As shown in figure 3, under pattern work, the transmission torque synchronous with the engagement of bottom gear sun gear 11 of combined cover 6, power is therefrom
Empty spindle motor 7 exports, and by combined cover 6, bottom gear sun gear 11, bottom gear planetary gear 3, connecting shaft 4, shares planetary gear 1, row
Carrier 13, differential mechanism 14, left half axle 8, right axle shaft 15 are transmitted to revolver 9 and right wheel 16 respectively, in this mode, keep off the sunshine at a high speed
Wheel 10 and top gear planetary gear 5 are in idling conditions.
Claims (1)
1. one kind two keeps off planet speed-change electric drive axle assembly, it is characterised in that：Including sharing planetary gear, fixed gear ring, bottom gear
Planetary gear, connecting shaft, top gear planetary gear, combined cover, hollow shaft motor, left half axle, revolver, top gear sun gear, bottom gear
Sun gear, reducer shell, planet carrier, differential mechanism, right axle shaft and right wheel；
The combined cover inner ring is connected by spline with motor output shaft, and torque is transmitted, and is arranged on the left of top gear sun gear,
A hollow shaft is stretched out on the right side of combined cover, has a pair of of combined cover conjunction gear, combined cover conjunction gear to be arranged in top gear too in hollow shaft
Between sun wheel and bottom gear sun gear, when shift fork or so is stirred, drive hollow shaft and combined cover conjunction gear move left and right, when to the left
When mobile tooth engagement, combined cover conjunction gear and bottom gear when moving right are combined on combined cover conjunction gear and top gear sun gear
Tooth engagement is combined on sun gear, to achieve the effect that switch high, low speed gear；The top gear sun gear passes through rolling bearing
Empty set is in the hollow shaft that combined cover stretches out, with top gear planetary gear engaged transmission；The bottom gear sun gear passes through the axis of rolling
Empty set is held on the left side output shaft of differential mechanism, with bottom gear planetary gear engaged transmission；The top gear planetary gear, bottom gear row
Star-wheel, connecting shaft share planetary gear and are integrated design, the connecting shaft by rolling bearing empty set on planet carrier,
It can be rotated around own axes relative to planet carrier, it also can be in the case where top gear planetary gear or bottom gear planetary gear drive around high speed
It keeps off the sunshine wheel or bottom gear sun gear revolves round the sun；The planet carrier is defeated as top gear planet row and bottom gear planet row
Go out, is connected firmly with the outer housing of differential mechanism, driving differential mechanism rotation；The shared planetary gear is engaged with fixed gear ring；The differential
The left side output shaft of device passes through the hollow space of hollow shaft motor, by forming revolute pair between rolling bearing and hollow shaft motor
Connection, while ensureing that hollow shaft motor and differential mechanism are coaxially arranged；The left half axle is connect by universal joint with revolver；The difference
The right side of fast device shell is by forming revolute pair connection between rolling bearing and reducer shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810296641.4A CN108454393A (en) | 2018-04-04 | 2018-04-04 | One kind two keeps off planet speed-change electric drive axle assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810296641.4A CN108454393A (en) | 2018-04-04 | 2018-04-04 | One kind two keeps off planet speed-change electric drive axle assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108454393A true CN108454393A (en) | 2018-08-28 |
Family
ID=63234559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810296641.4A Pending CN108454393A (en) | 2018-04-04 | 2018-04-04 | One kind two keeps off planet speed-change electric drive axle assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108454393A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109695686A (en) * | 2018-12-07 | 2019-04-30 | 一汽解放汽车有限公司 | A kind of drive axle double speed decelerator structure of bi-bevel gear |
| CN110315966A (en) * | 2019-06-28 | 2019-10-11 | 童鹤林 | A kind of electronic rear axle speed change system of pickup truck |
| CN111439116A (en) * | 2020-05-06 | 2020-07-24 | 常州易控汽车电子股份有限公司 | Coaxial two-gear planetary row electric drive axle for automobile |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5620387A (en) * | 1994-06-29 | 1997-04-15 | Ab Volvo | Drive unit for a motor vehicle |
| CN103754111A (en) * | 2014-02-13 | 2014-04-30 | 合肥工业大学 | Differential and change speed integrated double-gear rear driving assembly of electric vehicle |
| CN203766510U (en) * | 2014-04-13 | 2014-08-13 | 福建亚南电机有限公司 | Electric drive speed change axle integrating two-gear gearbox, main speed reducer and differential mechanism |
| CN107672431A (en) * | 2017-10-12 | 2018-02-09 | 十堰亚新汽车科技有限公司 | Pure electronic fluid drive integration driving axis used for electric vehicle |
-
2018
- 2018-04-04 CN CN201810296641.4A patent/CN108454393A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5620387A (en) * | 1994-06-29 | 1997-04-15 | Ab Volvo | Drive unit for a motor vehicle |
| CN103754111A (en) * | 2014-02-13 | 2014-04-30 | 合肥工业大学 | Differential and change speed integrated double-gear rear driving assembly of electric vehicle |
| CN203766510U (en) * | 2014-04-13 | 2014-08-13 | 福建亚南电机有限公司 | Electric drive speed change axle integrating two-gear gearbox, main speed reducer and differential mechanism |
| CN107672431A (en) * | 2017-10-12 | 2018-02-09 | 十堰亚新汽车科技有限公司 | Pure electronic fluid drive integration driving axis used for electric vehicle |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109695686A (en) * | 2018-12-07 | 2019-04-30 | 一汽解放汽车有限公司 | A kind of drive axle double speed decelerator structure of bi-bevel gear |
| CN109695686B (en) * | 2018-12-07 | 2024-02-23 | 一汽解放汽车有限公司 | Driving axle double-speed reducer structure with double bevel gears |
| CN110315966A (en) * | 2019-06-28 | 2019-10-11 | 童鹤林 | A kind of electronic rear axle speed change system of pickup truck |
| CN111439116A (en) * | 2020-05-06 | 2020-07-24 | 常州易控汽车电子股份有限公司 | Coaxial two-gear planetary row electric drive axle for automobile |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180828 |