CN207644168U - A kind of two grades of electric drive assemblies - Google Patents
A kind of two grades of electric drive assemblies Download PDFInfo
- Publication number
- CN207644168U CN207644168U CN201721661179.0U CN201721661179U CN207644168U CN 207644168 U CN207644168 U CN 207644168U CN 201721661179 U CN201721661179 U CN 201721661179U CN 207644168 U CN207644168 U CN 207644168U
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- China
- Prior art keywords
- speed
- driving motor
- clutch
- speed ratio
- gear
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- Expired - Fee Related
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- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The utility model provides a kind of two grades of electric drive assemblies, including a driving motor, a two speed transmission, speed reducing gear pair and differential mechanism；Two kinds of speed ratio outputs may be implemented, the output of vehicle large torque is realized using large speed ratio in starting, so that driving motor rotating speed is unlikely to excessively high using small speed ratio in high speed, driving motor operation is made to fall between high efficient area as possible.
Description
Technical field
The utility model is related to pure electric automobile field, especially a kind of two grades of electric drive assemblies.
Background technology
Gradually reinforce new-energy automobile promotion efficiency with national, new-energy automobile sales volume improves year by year, new-energy automobile
Energy consumption level and vehicle cost increasingly paid attention to by everybody, pure electric automobile is the important component of new-energy automobile, pure
Electric vehicle only drives wheels travel by motor using vehicle power supply as power by power train.Pure electric automobile universal at present
Drive system be generally made of driving motor and fixed speed ratio reduction box, the energy consumption level of pure electric automobile is largely by electricity
Machine running efficiency of system influences, therefore improves electric system operational efficiency as the important channel of pure electric vehicle energy consumption is reduced.Electricity
Generally there are one fixed efficiency distributed areas for machine system, and in order to improve the operational efficiency of electric system, it is generally desirable to motors for we
High efficiency range is operated in always.Meanwhile the performance of electric system is higher, cost is also higher.Existing pure electrical vehicle driving system
Fixed speed ratio reduction box is generally used, main there are two disadvantages：1, after vehicle working condition determines, the traffic coverage of electric system
Determine that, control system can not regulation motor system traffic coverage, motor is possible to be operated in inefficient section；2, due to
Reduction box speed ratio can not change, and in order to meet starting dynamic property, if having selected large speed ratio reduction box, need more powerful electricity
Machine could meet the needs of vehicle high-speed operation, this just virtually increases vehicle cost.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of two grades of electric drive assemblies, two kinds of speed may be implemented
Than output, it can change speed ratio according to operating mode when driving, so that the operating condition of motor is fallen between high efficient area as possible, save
The about energy；Since there are two speed ratios, the output of vehicle large torque can be realized using large speed ratio in starting, in high speed using small
Speed ratio makes motor speed be unlikely to excessively high, the dynamic property of heavy-duty motor is realized using low-power machine, centainly
Vehicle cost is reduced in degree.
The utility model is realized in this way：A kind of two grades of electric drive assemblies, including a driving motor, two grades of speed changes
Device, speed reducing gear pair and differential mechanism；
Two speed transmission include a first clutch, a second clutch, one first brake, a second brake and
One planetary gear train；The planetary gear train includes a shaft, a sun gear, a gear ring, at least two is evenly arranged
Planetary gear and a planet carrier；The sun gear is fixedly connected on the shaft；One end of the first clutch is connected to
The shaft, the other end are connected to the output end of the driving motor；One end of the second clutch is connected to the gear ring,
The other end is connected to the output end of the driving motor；First brake is for braking the sun gear；Second system
Dynamic device is for braking the gear ring；
The speed reducing gear pair is respectively fixedly connected in the planet carrier and differential mechanism.
The utility model has the following advantages that：The utility model two grades of electric drive assemblies of one kind, including a driving motor, one
A two speed transmission, speed reducing gear pair and differential mechanism；Two kinds of speed ratio outputs may be implemented, it when driving can be according to work
Condition changes speed ratio, and the operating condition of motor is made to fall between high efficient area as possible, energy saving；Since there are two speed ratio, Ke Yi
The output of vehicle large torque is realized using large speed ratio when starting, so that driving motor rotating speed was unlikely to using small speed ratio in high speed
Height, realizes the dynamic property of heavy-duty motor using low-power machine, reduces vehicle cost to a certain extent.
Description of the drawings
The utility model is further described in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is a kind of structural schematic diagram of the planetary gear train of two grades of electric drive assemblies of the utility model.
Fig. 2 is a kind of effect diagram of two grades of electric drive assemblies of the utility model.
In figure：1, driving motor；2, two speed transmission；21, planetary gear train, 211, sun gear；212, gear ring；213, row
Star-wheel；214, planet carrier；215, shaft；22, first clutch；23, second clutch；24, the first brake；25, the second system
Dynamic device；3, speed reducing gear pair；4, differential mechanism；5, wheel；6, transmission shaft.
Specific implementation mode
It please refers to Fig.1 shown in -2, the utility model two grades of electric drive assemblies of one kind, including a driving motor 1, one two
Gear gearbox 2, speed reducing gear pair 3 and differential mechanism 4；
Two speed transmission 2 includes a first clutch 22, a second clutch 23, one first brake 24, one second system
Dynamic device 25 and a planetary gear train 21；The planetary gear train 21 includes the gear ring of sun gear 211, one of a shaft 215, one
212, at least two planetary gear 213 being evenly arranged and a planet carrier 214；The sun gear 211 is fixedly connected on institute
State shaft 215；One end of the first clutch 22 is connected to the shaft 215, and the other end is connected to the driving motor 1
Output end；One end of the second clutch 23 is connected to the gear ring 212, and the other end is connected to the defeated of the driving motor 1
Outlet；First brake 22 is for braking the sun gear 211；The second brake 23 is for braking the gear ring
212；
The speed reducing gear pair 3 is respectively fixedly connected in the planet carrier 214 and differential mechanism 4.
A specific embodiment：The planetary gear train 21 includes three planetary gears 213 being evenly arranged, and the differential mechanism 4 connects
It is connected on the transmission shaft 6 of wheel 5；
When using the output of small speed ratio, concrete mode is：It is closed first clutch 22, second clutch 23 is opened, is locked
Second brake 25 opens the first brake 24, and the power of driving motor 1 can be transmitted to planet carrier by sun gear 211 at this time
214 are transmitted to differential mechanism 4 again, and then drive wheel 5, and transmission speed ratio is i1, gear 1 at this time；
When using large speed ratio output, concrete mode is：It is closed second clutch 23, first clutch 22 is opened, is locked
First brake 24 opens second brake 25, and the power of driving motor 1 can be transmitted to planet carrier 214 by gear ring 212 at this time
It is transmitted to differential mechanism 4 again, and then drives wheel 5, transmission speed ratio is i2, gear 2 at this time；
Wherein speed ratio i2 is more than i1.
When electric vehicle starts since it is desired that large torque, so the gear 2 is chosen at this time, when electric vehicle is in height
Speed when driving, makes motor speed be unlikely to excessively high, chooses the gear 1 at this time, can motor be transported in this way using small speed ratio
Row is fallen between high efficient area as possible, while saving electric energy.
Two kinds of speed ratio outputs may be implemented in the utility model, can change speed ratio according to operating mode when driving, make electricity
The operating condition of machine is fallen between high efficient area as possible, energy saving；Since there are two speed ratios, large speed ratio can be used in starting
It realizes the output of vehicle large torque, so that motor speed is unlikely to excessively high using small speed ratio in high speed, even if using low-power machine
It can also realize the dynamic property of heavy-duty motor, reduce vehicle cost to a certain extent.
Although the foregoing describe specific embodiment of the present utility model, those familiar with the art answers
Working as understanding, we are merely exemplary described specific embodiment, rather than for the limit to the scope of the utility model
Fixed, those skilled in the art modification and variation equivalent made by the spirit according to the utility model all should
Cover in the scope of the claimed protection of the utility model.
Claims (1)
1. a kind of two grades of electric drive assemblies, it is characterised in that：Including a driving motor, two speed transmission, a speed reducing gear pair
And differential mechanism；
Two speed transmission includes a first clutch, a second clutch, one first brake, a second brake and one
Planetary gear train；The planetary gear train includes a shaft, a sun gear, a gear ring, at least two row being evenly arranged
Star-wheel and a planet carrier；The sun gear is fixedly connected on the shaft；One end of the first clutch is connected to described
Shaft, the other end are connected to the output end of the driving motor；One end of the second clutch is connected to the gear ring, another
End is connected to the output end of the driving motor；First brake is for braking the sun gear；The second brake
For braking the gear ring；
The speed reducing gear pair is respectively fixedly connected in the planet carrier and differential mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721661179.0U CN207644168U (en) | 2017-11-29 | 2017-11-29 | A kind of two grades of electric drive assemblies |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721661179.0U CN207644168U (en) | 2017-11-29 | 2017-11-29 | A kind of two grades of electric drive assemblies |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207644168U true CN207644168U (en) | 2018-07-24 |
Family
ID=62883279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721661179.0U Expired - Fee Related CN207644168U (en) | 2017-11-29 | 2017-11-29 | A kind of two grades of electric drive assemblies |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207644168U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108016292A (en) * | 2017-11-29 | 2018-05-11 | 东南（福建）汽车工业有限公司 | A kind of two grades of electric drive assemblies and method for changing speed |
| CN112265438A (en) * | 2020-10-21 | 2021-01-26 | 恒大新能源汽车投资控股集团有限公司 | Electric drive system, vehicle drive control method and device and vehicle |
-
2017
- 2017-11-29 CN CN201721661179.0U patent/CN207644168U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108016292A (en) * | 2017-11-29 | 2018-05-11 | 东南（福建）汽车工业有限公司 | A kind of two grades of electric drive assemblies and method for changing speed |
| CN112265438A (en) * | 2020-10-21 | 2021-01-26 | 恒大新能源汽车投资控股集团有限公司 | Electric drive system, vehicle drive control method and device and vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180724 Termination date: 20191129 |