CN206664249U - A kind of electric automobile gear system - Google Patents
A kind of electric automobile gear system Download PDFInfo
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- CN206664249U CN206664249U CN201720386490.2U CN201720386490U CN206664249U CN 206664249 U CN206664249 U CN 206664249U CN 201720386490 U CN201720386490 U CN 201720386490U CN 206664249 U CN206664249 U CN 206664249U
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- speed
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- speed changer
- speed change
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Abstract
A kind of electric automobile gear system, it includes：Drive device, the drive device have power output shaft；Speed changer, the exportable more notch speed ratios of speed changer；Differential mechanism, it is connected with the speed changer, and the differential mechanism has the power output semiaxis that two ends are connected with wheel assembly respectively；The power output shaft is hollow output shaft, and the hollow output shaft supports the speed changer and passes through the hollow output shaft to its passing power, one of them described power output semiaxis.Electric automobile gear system of the present utility model, integrated driving motor, two notch speeds are than speed changer, differential mechanism in one, and structure is compacter, more lightweight.
Description
Technical field
It the utility model is related to electric powered motor drive technology field, and in particular to a kind of electric automobile gear system.
Background technology
It is world trends that clean energy resource, which substitutes fossil energy, and electric automobile is to realize one of Main Means of this target,
Greatly develop the important national strategy that electric automobile has been confirmed as China's future development.And the more notch speed ratios of electric automobile needs,
The power drive system of stable drive and compact dimensions.In current power transmission system for electric vehicle, motor and speed change
Device is separate part, very long power transmission shaft is generally set between speed changer and main reducing gear, and then increase electronic
The bulk and weight of automotive power transmission system.Current electric automobile gear device is the speed changer of fixed speed ratio mostly, and
Mostly using the structure type of multistage parallel-axes gears transmission, the speed changer of fixed speed ratio is unfavorable for improving transmission efficiency, parallel
Shaft gear transmission is easy to trigger high frequency noise.Therefore provide a kind of integrated driving motor, two notch speeds than speed changer, differential mechanism in
The power transmission device of electric vehicle of one.
Such as Chinese patent CN104477029B discloses a kind of power drive system of two grades of electric automobiles, armature spindle is set
For hollow shaft, so that differential mechanism can be arranged on the inside of armature spindle；Synchronizer is provided with ring gear；Nibbled on synchronizer
Close and be provided with one grade of engagement gear ring and two grades of engagement gear rings, one grade of engagement gear ring is fixed on gusset, and two grades of engagement gear rings pass through key
It is connected on differential shaft, so as to form gear shifting structure；Setting differential shaft is hollow shaft, so that the right main gear for reducing gear
Axle can be arranged on the inside of differential shaft.The utility model can realize the Highgrade integration and one of motor, speed changer and differential mechanism
Change, and improve the power performance of electric automobile.
But the power drive system of above-mentioned two grades of electric automobiles, wherein between differential mechanism is arranged on into rotor axis of electric, the knot
Although structure further shorten the axial dimension of power drive system, but the radial dimension of the drive system significantly increases, and the knot
The motor of structure speed lifting on exist limitation, because motor shaft is relatively large in diameter, thus exist motor shaft output speed lifting have
The defects of limit, it is difficult to reach larger output speed, be unfavorable for high-energy-density high-speed electric expreess locomotive use, and industrially
Batch production manufacture have difficulties.
Utility model content
Therefore, the technical problems to be solved in the utility model is to overcome that noise of the prior art is big, size is big and not
Can change speed than the defects of, it is high so as to provide a kind of integrated level, it is compact-sized, low noise, suitable for the electronic of high-speed electric expreess locomotive
Speed control system of car.
Therefore, the technical solution of the utility model is as follows：
A kind of electric automobile gear system, it includes：Drive device, the drive device have power output shaft；Speed change
Device, the exportable more notch speed ratios of speed changer；Differential mechanism, it is connected with the speed changer, and the differential mechanism has two ends
The power output semiaxis being connected respectively with wheel assembly；The power output shaft is hollow output shaft, the hollow output shaft branch
Hold the speed changer and pass through the hollow output shaft to its passing power, one of them described power output semiaxis.
Further, the speed changer is one or more levels planetary transmission.
Further, the planetary transmission also includes Integral clutch braking device, the integrated clutch system
Dynamic device is disposed therein between the sun gear and ring gear of primary planet pinion system, the Integral clutch braking device control
The output speed ratio of the planetary transmission.
Further, it is connected between the epicyclic trains at different levels of the planetary transmission, wherein first order row
The sun gear of star gear train is connected with the hollow output shaft, the planet carrier or ring gear of afterbody epicyclic train with it is described
Differential mechanism connects.
Further, the Integral clutch braking device be arranged on the sun gear of the first order epicyclic train with it is interior
Between gear ring, and control the rotation or stopping of the first order epicyclic train ring gear.
Further, the drive device is inner rotor motor.
Further, the inner rotor motor also includes the rotor set around the hollow output shaft.
Further, the drive device, the speed changer and the differential mechanism sequentially coaxially line are set.
Further, the speed change system also includes covering the overall housing of the speed change system, the housing include according to
Left casing, intermediate casing and the right casing of secondary connection, the intermediate casing are that the inner rotor motor and the speed changer share
Housing.
The technical solution of the utility model, have the following advantages that：
1st, electric automobile gear system of the present utility model, integrated driving motor, two notch speeds are than speed changer, differential mechanism in one
Body, structure is compacter, more lightweight；Motor, speed changer, differential mechanism are located at same rotation axis, reduce power
The radial dimension and weight of transmission system.By the raising of integrated level, more current parallel-axes gears drive mechanism is compacter,
More lightweight.
2nd, electric automobile gear system of the present utility model, using planetary gear transmission mechanism, passed compared to parallel-axes gears
Motivation structure, the stress of higher, the single gear of registration of epicyclic transmission mechanism is smaller, and then makes transmission more steady, and noise is more
It is low.
3rd, electric automobile gear system of the present utility model, because the main shaft of motor uses hollow shaft structure, driving
The main shaft of motor is stretched into transmission function module, is avoided the situation that power transmission shaft is used between speed changer and differential mechanism, is subtracted
Lack the length of driving-chain, improve transmission efficiency.
4th, electric automobile gear system of the present utility model, in certain one-level planetary gears of planetary transmission
Between ring gear and sun gear, provided with Integral clutch braking device, this ring gear is set both not turn with remains stationary, can also
This sun gear synchronous rotary is followed, thus achieves two notch speed ratios.
Brief description of the drawings
, below will be right in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, describe below
In accompanying drawing be some embodiments of the present utility model, for those of ordinary skill in the art, do not paying creativeness
On the premise of work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the high-level schematic functional block diagram of electric automobile gear system of the present utility model；
Fig. 2 is the structural representation of two-stage planet speed change system of the present utility model；
Description of reference numerals：
1- the first power output semiaxis；2- rotors；3- electric machine main shafts；4- Integral clutch braking devices；5- first
Level sun gear；6- first order ring gears；7- first order pinion frames；8- second level ring gear；9- second level pinion frame；
10- the second power output semiaxis；The right casings of 11-；12- intermediate casings；The left casings of 13-；14- wheel assemblies；15- planetary gears become
Fast device；16- differential mechanisms；
Embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with accompanying drawing, it is clear that described
Embodiment is the utility model part of the embodiment, rather than whole embodiments.Based on the embodiment in the utility model, sheet
The every other embodiment that field those of ordinary skill is obtained under the premise of creative work is not made, belongs to this practicality
Novel protected scope.
, it is necessary to explanation in description of the present utility model, term " " center ", " on ", " under ", it is "left", "right", " perpendicular
Directly ", the orientation of the instruction such as " level ", " interior ", " outer " or position relationship are based on orientation shown in the drawings or position relationship, are only
Described for the ease of description the utility model and simplifying, rather than instruction or imply signified device or element must have it is specific
Orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.In addition, term " the
One ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that instruction or hint relative importance.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in description of the present utility model
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly
Connection；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary,
It can be the connection of two element internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
Concrete meaning of the language in the utility model.
In addition, as long as technical characteristic involved in the utility model different embodiments disclosed below is each other
Conflict can is not formed to be combined with each other.
Embodiment 1
As shown in figure 1, described electric automobile gear system of the present utility model is spatially arranged in order including three
Functional module, be motor, planetary transmission 15 and differential mechanism 16 respectively.As shown in Fig. 2 wherein motor bag
Include electric machine main shaft 3 and the rotor 2 set around the electric machine main shaft 3；The motor, the planetary transmission
15 and the differential mechanism 16 along the electric machine main shaft 3 sequentially coaxially line set.Wherein electric machine main shaft 3 is power output shaft, motor
Main shaft 3 is stretched into the planetary transmission 15 and to speed changer passing power, and the electric machine main shaft 3 uses hollow shaft knot
Structure；The planetary transmission 15 is supported by hollow electric machine main shaft 3；The differential mechanism 16 connects with planetary transmission 15
Connecing, it is the first power output semiaxis 1 and the second power output semiaxis 10 that the differential mechanism 16, which exports two power output semiaxis, two
Individual power output semiaxis is connected with two wheel assemblies 14 to the passing power of wheel assembly 14 respectively, wherein in the present embodiment
The first power output semiaxis 1 pass through hollow electric machine main shaft 3 after be connected with wheel assembly 14.
As shown in Fig. 2 the speed change system of the present utility model also includes covering the overall housing of the speed change system, institute
State left casing 13, intermediate casing 12 and right casing 11 that housing includes being sequentially connected.Wherein described left casing 13 covers the drive
The left end side of dynamic motor, the right casing 11 cover the differential mechanism 16, and the intermediate casing 12 is motor and speed changer
The housing being used in conjunction with.Referring to accompanying drawing 2, in intermediate casing 12 between the motor and the planetary transmission 15
Casing dividing plate and seal member are additionally provided with, the casing dividing plate and seal member are used to isolate the planetary transmission 15
With motor, prevent the lubricating oil in planetary transmission 15 from flowing into the property for telling motor internal influence motor
Energy.
Action edge is entered using planetary transmission in the present embodiment and transmits exportable two notch speeds ratio, as shown in Fig. 2 described
Planetary transmission 15 includes the first order epicyclic train and second level epicyclic train of drive connection, two-stage planet
Sun gear, planet carrier, the ring gear of system are all in same axis with electric machine main shaft 3.Wherein first order epicyclic train includes the
One-level sun gear 5, first order ring gear 6, it is arranged between the first order sun gear 5 and shown first order ring gear 6 and encloses
The multiple first order planetary gears rotated around the first order sun gear 5, and the support planetary first order row of the first order
Gear rack 7.Second level epicyclic train includes second level sun gear, second level ring gear 8, is arranged on the second level sun
The second level planetary gear rotated between wheel and the second level ring gear 8 and around the second level sun gear, and support
The planetary second level pinion frame 9 in the second level.Wherein described first order sun gear 5 is driven by the electric machine main shaft 3
Dynamic rotation, the first order pinion frame 7 of first order epicyclic train are consolidated with the second level sun gear of second level epicyclic train
Even；And the second level pinion frame 9 of the second level epicyclic train is connected with the housing of differential mechanism 16.
The planetary transmission of the present embodiment also includes Integral clutch braking device 4, passes through the integration
Clutch brake 4 controls the planetary transmission 15 to realize two grades of speed-ratio regulations.The integrated clutch and brake dress
Put 4 it is corresponding with the first order ring gear 6 be arranged between first order ring gear 6 and first order sun gear 5, the integration
Clutch brake 4 can control the first order ring gear 6 to be in the synchronous rotary of sun gear 5 or stop two kinds of working conditions,
It is achieved in two notch speed ratios.As shown in Fig. 2 the Integral clutch braking device 4 makes the first order internal tooth when being in right side
Circle 6 is connected with intermediate casing 12, and the Integral clutch braking device 4 makes the first order ring gear 6 when being in left side
With synchronous rotary together with shown first order sun gear 5, two kinds of different states of first order ring gear 6 control the speed change system
Export two kinds of fast ratios.
As shown in Fig. 2 the operation principle of the Integral clutch braking device 4 of the present utility model is：When the one
Change clutch brake 4 when being in right side, the first order ring gear 6 is connected with the intermediate casing 12, and now first
Ring gear 6 is static does not rotate for level, and the first order epicyclic train and second level epicyclic train of the planetary transmission 15 are same
When produce decelerating effect, reach maximum transmission ratio, now export low speed；When the Integral clutch braking device 4 is in a left side
During side, the first order ring gear 6, which releases, to be fixed, can be with the synchronous rotary of the first sun gear 5, the planetary transmission
15 first order epicyclic train does not produce decelerating effect, only produces decelerating effect by second level epicyclic train, is formed minimum
Transmission speed ratio, now output is at a high speed.
Electric automobile gear system of the present utility model, motor, speed changer, differential mechanism are located at same rotation axis,
Reduce the radial dimension and weight of power drive system.By the raising of integrated level, motor, two notch speeds are compared into speed changer
It is integrated in one with differential mechanism, makes system architecture compacter, more lightweight.
Obviously, above-described embodiment is only intended to clearly illustrate example, and is not the restriction to embodiment.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of change or
Change.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change thus extended out or
Among the protection domain that variation is created still in the utility model.
Claims (9)
1. a kind of electric automobile gear system, it includes：
Drive device, the drive device have power output shaft；
Speed changer, the exportable more notch speed ratios of speed changer；
Differential mechanism, it is connected with the speed changer, and the differential mechanism has the power that two ends are connected with wheel assembly respectively
Output axle shaft；
It is characterized in that：
The power output shaft is hollow output shaft, and the hollow output shaft supports the speed changer and to its passing power, its
In a power output semiaxis pass through the hollow output shaft.
2. speed change system according to claim 1, it is characterised in that：The speed changer becomes for one or more levels planetary gear
Fast device.
3. speed change system according to claim 2, it is characterised in that：The planetary transmission also include integration from
Close brake apparatus, the Integral clutch braking device be disposed therein the sun gear of primary planet pinion system and ring gear it
Between, the Integral clutch braking device controls the output speed ratio of the planetary transmission.
4. speed change system according to claim 3, it is characterised in that：The planetary gears at different levels of the planetary transmission
It is connected between system, wherein the sun gear of first order epicyclic train is connected with the hollow output shaft, afterbody planet
The planet carrier or ring gear of gear train are connected with the differential mechanism.
5. speed change system according to claim 4, it is characterised in that：The Integral clutch braking device is arranged on described
Between the sun gear and ring gear of first order epicyclic train, and control the first order epicyclic train ring gear rotation or
Stop.
6. according to the speed change system described in claim 1-5 any one, it is characterised in that：The drive device is internal rotor electricity
Machine.
7. speed change system according to claim 6, it is characterised in that：The inner rotor motor is also included around described hollow
The rotor that output shaft is set.
8. speed change system according to claim 7, it is characterised in that：The drive device, the speed changer and the difference
Fast device sequentially coaxially line is set.
9. speed change system according to claim 8, it is characterised in that：The speed change system also includes covering the speed change system
The housing for entirety of uniting, the housing include left casing, intermediate casing and the right casing being sequentially connected, and the intermediate casing is described
The housing that inner rotor motor and the speed changer share.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720386490.2U CN206664249U (en) | 2017-04-13 | 2017-04-13 | A kind of electric automobile gear system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720386490.2U CN206664249U (en) | 2017-04-13 | 2017-04-13 | A kind of electric automobile gear system |
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| Publication Number | Publication Date |
|---|---|
| CN206664249U true CN206664249U (en) | 2017-11-24 |
Family
ID=60380187
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720386490.2U Active CN206664249U (en) | 2017-04-13 | 2017-04-13 | A kind of electric automobile gear system |
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| Country | Link |
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| CN (1) | CN206664249U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108482114A (en) * | 2018-04-04 | 2018-09-04 | 同济大学 | A kind of two grades of speed change electric drive axle assemblies of two-row planetary gear formula |
| CN108556606A (en) * | 2018-03-12 | 2018-09-21 | 江苏大学 | It is a kind of for the integrated motor of electric vehicle and the Driven by Coaxial bridge and method of speed changer |
| CN109435657A (en) * | 2018-09-07 | 2019-03-08 | 天嘉智能装备制造江苏股份有限公司 | A kind of three-in-one electric drive vehicle bridge and its control method for electric vehicle |
| CN110936811A (en) * | 2018-09-25 | 2020-03-31 | 长城汽车股份有限公司 | Electric drive axle and gear shifting method thereof |
| CN114475220A (en) * | 2021-12-22 | 2022-05-13 | 优跑汽车技术(上海)有限公司 | Coaxial three-in-one electric drive system, integrated chassis structure and new energy automobile |
-
2017
- 2017-04-13 CN CN201720386490.2U patent/CN206664249U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108556606A (en) * | 2018-03-12 | 2018-09-21 | 江苏大学 | It is a kind of for the integrated motor of electric vehicle and the Driven by Coaxial bridge and method of speed changer |
| CN108482114A (en) * | 2018-04-04 | 2018-09-04 | 同济大学 | A kind of two grades of speed change electric drive axle assemblies of two-row planetary gear formula |
| CN109435657A (en) * | 2018-09-07 | 2019-03-08 | 天嘉智能装备制造江苏股份有限公司 | A kind of three-in-one electric drive vehicle bridge and its control method for electric vehicle |
| CN110936811A (en) * | 2018-09-25 | 2020-03-31 | 长城汽车股份有限公司 | Electric drive axle and gear shifting method thereof |
| CN114475220A (en) * | 2021-12-22 | 2022-05-13 | 优跑汽车技术(上海)有限公司 | Coaxial three-in-one electric drive system, integrated chassis structure and new energy automobile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191015 Address after: 211100 No. 1 East Tianyuan Road, Jiangning Science Park, Nanjing, Jiangsu Co-patentee after: Nanjing High Precision Transmission Equipment Manufacturing Group Co.,Ltd. Patentee after: NANJING HIGH SPEED GEAR MANUFACTURING Co.,Ltd. Address before: 211100 No. 1 East Tianyuan Road, Jiangning Science Park, Nanjing, Jiangsu Patentee before: NANJING HIGH SPEED GEAR MANUFACTURING Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200430 Address after: 211100 No. 30 Houjiao Road, High-tech Park, Jiangning District, Nanjing City, Jiangsu Province Patentee after: NANJING HIGH SPEED GEAR MANUFACTURING Co.,Ltd. Address before: 211100 No. 1 East Tianyuan Road, Jiangning Science Park, Nanjing, Jiangsu Co-patentee before: Nanjing High Precision Transmission Equipment Manufacturing Group Co.,Ltd. Patentee before: NANJING HIGH SPEED GEAR MANUFACTURING Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20230207 Granted publication date: 20171124 |
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| PP01 | Preservation of patent right | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20230327 Granted publication date: 20171124 |
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| PD01 | Discharge of preservation of patent |