CN207333612U - Two gear power drive systems of pure electric vehicle - Google Patents
Two gear power drive systems of pure electric vehicle Download PDFInfo
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- CN207333612U CN207333612U CN201721050941.1U CN201721050941U CN207333612U CN 207333612 U CN207333612 U CN 207333612U CN 201721050941 U CN201721050941 U CN 201721050941U CN 207333612 U CN207333612 U CN 207333612U
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Abstract
A kind of two gear power drive systems of pure electric vehicle, including：Input axle assembly, countershaft assembly, differential assembly and driving motor, wherein：Countershaft assembly is equipped with two gear output gears, and differential assembly is equipped with final gear, and countershaft assembly is engaged with final gear；The input axle assembly includes：Input shaft, a gear input gear assembly, two gear input gear assemblies and synchronizer, wherein：Synchronizer is press-fitted on input shaft and axial restraint, one gear input gear assembly and two gear input gear assemblies are arranged on synchronizer both sides and empty set on input shaft, two gear input gears are engaged with two gear output shaft gears respectively, and input shaft passes through spline fitted with driving motor output shaft.The utility model is equipped with the fast ratio of two gears, and large speed ratio is used when vehicle low speed is run, and is efficiently used the high efficient area of motor and high rotating speed area using small fast ratio during high-speed cruising in the car, is met vehicle max. speed and grade climbing performance requirement.
Description
Technical field
The utility model relates to a kind of technology in pure electric automobile field, is specifically a kind of two gear electricity of pure electric vehicle
Drive system.
Background technology
Due to the requirement of environment and the energy, pure electric automobile is more subject to the world each as a kind of important vehicles
The attention of state.Power source of the power drive system as electric car, integrates motor and gearbox in one.Country's electric car leads at present
Single reduction gear is often selected, since speed is than fixing, the efficient performance interval of motor, vehicle max. speed and climbing property can not be taken into account
Energy；The problems such as complicated, cost is higher can be faced if multi-shifting speed variator is selected.
Utility model content
The utility model is directed to deficiencies of the prior art, it is proposed that a kind of two gear electric drive trains of pure electric vehicle
System, equipped with the fast ratio of two gears, large speed ratio is used when vehicle low speed is run, and uses small fast ratio during high-speed cruising in the car, effectively
High efficient area and high rotating speed area using motor, meet vehicle max. speed and grade climbing performance requirement.
The utility model is achieved through the following technical solutions：
The utility model includes：Input axle assembly, countershaft assembly, differential assembly and driving motor, wherein：Jackshaft
Assembly is equipped with two gear output gears, and differential assembly is equipped with final gear, and countershaft assembly is engaged with final gear；
The input axle assembly includes：Input shaft, a gear input gear assembly, two gear input gear assemblies and synchronization
Device, wherein：Synchronizer is press-fitted on input shaft and axial restraint, and a gear input gear assembly and two gear input gear assemblies are set
In synchronizer both sides and empty set is on input shaft, and two gear input gears are engaged with two gear output shaft gears respectively, and input shaft is with driving
Dynamic motor output shaft realizes input axle assembly and drives the power transmission of motor by spline fitted.
The countershaft assembly includes：Jackshaft left bearing, two gear output gears, jackshaft, one gear output gear and
Jackshaft right bearing, wherein：Two gear output gears and a gear output gear are connected in jackshaft both ends by welding or spline, in
Countershaft both ends are separately installed with jackshaft left bearing and jackshaft right bearing, a gear output gear and a gear input shaft gear assembly
Engagement, two gear output gears and two gear input gear assembly engagements.
The differential assembly includes：Differential mechanism, differential bearing and final gear, wherein：Differential mechanism is arranged on
On differential bearing, main ratio wheel is connected by bolt with differential mechanism, and final gear is engaged with jackshaft.
The differential assembly is connected with halting mechanism, and the halting mechanism includes park pawl and correspondence is set therewith
The parking ratchet wheel put, the parking ratchet wheel are fixed on differential assembly or are engaged with final gear.
The synchronizer is connected with gear shift unit, and the gear shift unit includes：Shift motor, gear shifting speed reducer structure and
Shifting fork assembly, wherein：Shift motor output shaft is connected with gear shifting speed reducer structure input shaft by shaft coupling, and shifting fork assembly is stuck in together
Step device tooth is put on.
Input axle assembly, countershaft assembly, differential assembly, gear shift unit and the halting mechanism is arranged on speed changer
In housing, drive between electric machine casing and gear box casing by positioning finger setting and being bolted, and used at faying face
Gasket or fluid sealant sealing；Electric machine casing sets oil sealing at output shaft axis hole, and gear box casing is set at input shaft axis hole
Oil sealing is put, realizes the isolation of the dry chamber of driving motor and the wet chamber of gearbox.
Technique effect
Compared with prior art, the utility model has the advantages that：
1) the fast ratios of two gears are used, small speed is reduced than reducing requirement of the vehicle to driving motor maximum speed, large speed ratio
Requirement of the vehicle to driving motor maximum torque；Speed governing is compared by the speed of two gears of height so that driving motor can be realized
Miniaturization, and high torque output and max. speed are taken into account, significantly improve vehicle performance；
2) motor and gearbox is driven to use split structure, driving motor output shaft and input shaft to couple using spline,
The structure complexity and difficulty of processing of housing are reduced, while drives motor and gearbox to realize independent off-line test, is carried
The qualification rate of high electric drive assembly, while driving motor or gearbox can be independently replaced, improve and reprocess efficiency；
3) differential mechanism or jackshaft are locked by halting mechanism, without synchronizer and gear shift unit, that is, lockable wheel,
Improve the security of parking；
4) gearshift function is realized by electric gear shift unit and synchronizer, without clutch, fast response time, with conventional hydraulic
Gear shifting actuating mechanism is compared, and effectively reduces the volume and weight of gear shifting structure assembly, simple in structure, is easily assembled；
5) input axle assembly, countershaft assembly and differential assembly use parallel-axis type driven Design, simple in structure, technique
Property is good, while can ensure the reliability of system.
Brief description of the drawings
Fig. 1 is the utility model overall structure diagram；
Fig. 2 is input axle assembly cross-sectional view in the utility model；
Fig. 3 is countershaft assembly structure diagram in the utility model；
Fig. 4 is differential assembly and halting mechanism structure diagram in the utility model；
In figure：Gear shift unit 1, shifting fork assembly 2, input axle assembly 3, countershaft assembly 4, differential assembly 5, halting mechanism
6th, motor 7, input shaft left end ball bearing 8, input shaft 9, bearing of needle roller for 2nd gear 10, two is driven to keep off input gear assembly 11, two and keep off
Input gear 12, two keeps off conjunction gear 13, synchronizer 14, one keeps off needle bearing 15, one and keeps off the gear input tooth of input gear assembly 16, one
Wheel 17, one gear conjunction gear 18, input shaft right end ball bearing 19, grommet 20, jackshaft left bearing 21, two keep off output gear 22, in
Countershaft 23, one keeps off output gear 24, jackshaft right bearing 25, parking ratchet wheel 26, differential mechanism 27, differential bearing 28, main deceleration
Gear 29, park pawl 30, electric parking transmission device 31.
Embodiment
As shown in Figure 1, the present embodiment includes：Gear shift unit 1, input axle assembly 3, countershaft assembly 4, differential assembly 5,
Halting mechanism 6 and driving motor 7.
As depicted in figs. 1 and 2, the input axle assembly 3 includes：Input shaft 9, one keeps off input gear assembly 16, two and keeps off
Input gear assembly 11, synchronizer 14, one keep off needle bearing 15, bearing of needle roller for 2nd gear 10, input shaft left end ball bearing 8 and input
Axis right end ball bearing 19, wherein：Synchronizer 14 is press-fitted on input shaft 9 by spline, and passes through clamp spring axial restraint；One gear is defeated
Enter gear assembly 16 by gear 15 empty set of needle bearing on input shaft 9, two gear input gear assemblies 11 pass through two gear needle rollers
10 empty set of bearing is on input shaft 9；Input shaft right end ball bearing 19 is interference fitted on 9 shaft shoulder of input shaft by grommet 20, defeated
Enter axis left end ball bearing 8 to be press-fitted on 9 shaft shoulder of input shaft by interference fit；9 one end of input shaft is external splines, with driving motor
The internal spline of 7 output shafts coordinates, and realizes input axle assembly 3 and drives the power transmission of motor 7.
The gear input gear 17 and one that the one gear input gear assembly 16 includes welding keeps off conjunction gear 18；Described
The two gear input gears 12 and two that two gear input gear assemblies 11 include welding keep off conjunction gear 13.
As shown in Figures 2 and 3, the countershaft assembly 4 includes：Jackshaft left bearing 21, two keep off output gear 22, in
Countershaft 23, one keeps off output gear 24 and jackshaft right bearing 25, wherein：Two gear output gears 22 and one keep off output gear 24 and pass through
Welding or spline are connected in 23 both ends of jackshaft, and 23 both ends of jackshaft are separately installed with jackshaft left bearing 21 and jackshaft right axle
25 are held, a gear output gear 24 is engaged with a gear input shaft gear assembly 16, and it is total that two gear output gears 22 and two keep off input gear
Into 11 engagements.
As shown in Figure 3 and Figure 4, the differential assembly 5 includes：Differential mechanism 27, differential bearing 28 and main reducing gear
Wheel 29, wherein：Differential mechanism 27 is fixed on differential bearing 28, and main ratio wheel 29 is fixed on differential bearing 28 and passes through spiral shell
Bolt is connected with differential mechanism 27, and final gear 29 is engaged with jackshaft 23.
As shown in figure 4, the halting mechanism 6 includes park pawl 30 and the parking ratchet wheel 26 being correspondingly arranged therewith；It is excellent
Selection of land, the parking ratchet wheel 26 are fixed on differential assembly 5 by spline.
Preferably, the halting mechanism 6 is equipped with electric parking transmission device 31, and the halting mechanism 6 can be stayed by electricity
Car transmission device 31 or manual zipper mode drive the pawl rotation axis being connected in park pawl 30 to rotate；In parking process
In, the cam mechanism in pawl rotation axis promotes park pawl 30, the end of park pawl 30 is entered the tooth of parking ratchet wheel 26
In interradicular space, parking ratchet wheel 26 stop operating locking countershaft assembly 4 achieve the purpose that parking；During vehicle launch, spine
Pawl rotation axis returns to initial position with the drive reversion of electric parking transmission device 31 or zipper, and park pawl 30 is in return spring
Exited under effect from 26 bottom clearance of parking ratchet wheel and return to the original state before parking.
As illustrated in fig. 1, it is preferred that the gear shift unit 1 is shifted gears using electricity, including：Shift motor 1, gear shifting speed reducer
Structure and shifting fork assembly 2, wherein：The output shaft of shift motor 1 is connected with the input shaft of gear shifting speed reducer structure by shaft coupling, shift fork
The tooth that assembly 2 is stuck in synchronizer 14 is put on.
The present embodiment work of shifting gears every time includes：It is pre- to pluck gear, pluck gear, put into gear, put into gear in advance, power five stages of recovery：
1) pluck the gear stage in advance, the moment of torsion of this stage driving motor 7 is progressively down to zero, and moment of torsion reduces speed and should ensure that impact force
Degree meets relevant design requirement；
2) pluck the gear stage, shift motor start-up operation and output torque, pass through gear shifting speed reducer in this stage gear shift unit 1
Structure drives shifting fork assembly 2, and synchronizer 14 is quickly moved back gear to neutral gear from former gear；
3) put into gear the stage in advance, driving 7 speed governing of motor of this stage, makes the rotating speed of input shaft 9 and turning for shift gear to be synchronized
The difference that hastens is kept in the reasonable scope, and after the completion of speed governing, driving motor 7 recovers the work of zero moment of torsion；
4) to put into gear the stage, this stage driving motor 7 keeps the work of zero moment of torsion, and shift motor is started to work and output torque,
Shifting fork assembly 2 is driven by gear shifting speed reducer structure, synchronizer 14 is moved to pre-hung gear from neutral gear；
5) power Restoration stage, this stage driving motor 7 progressively recover torque output, there is provided power resources needed for vehicle.
The operation principle of the present embodiment is as follows：
Driving motor 7 is rotated by output shaft band driven input shaft 9 and transmits moment of torsion；Gear shift unit 1 promotes synchronizer movement
To neutral gear one gear two gears put：
1) synchronizer 14 is in neutral gear position, and a gear input gear 17 and two keeps off input gear 12 can not drive because of idle running
Jackshaft 23 rotates, and the power output of driving motor 7 can not be transferred to differential mechanism end by jackshaft 23；
2) synchronizer 14 is moved to a gear and puts, and a gear conjunction gear 18 is connected by synchronizer gear sleeve with synchronizer 14, is made
Obtain kinetic force and be transferred to a gear input gear 17, a gear input gear 17 drives a gear output gear 24 to rotate, a gear output gear
The drive jackshaft 23 of wheel 24 rotates, and power is transferred to differential mechanism end by countershaft-gear；
3) synchronizer 14 is moved to two gears and puts, and two gear conjunction gears 13 are connected by synchronizer gear sleeve with synchronizer 14, are made
Obtain kinetic force and be transferred to two gear input gears 12, two gear input gears 12 drive two gear output gears 22 to rotate, two gear output gears
The drive jackshaft 23 of wheel 22 rotates, and power is transferred to differential mechanism end by countershaft-gear.
Above-mentioned specific implementation can by those skilled in the art on the premise of without departing substantially from the utility model principle and objective with
Different modes carries out it local directed complete set, and the scope of protection of the utility model is subject to claims and not by above-mentioned specific
Implementation is limited, and each implementation in the range of it is by the constraint of the utility model.
Claims (9)
- A kind of 1. two gear power drive systems of pure electric vehicle, it is characterised in that including：Input axle assembly, countershaft assembly, differential Device assembly and driving motor, wherein：Countershaft assembly is equipped with two gear output gears, and differential assembly is equipped with final gear, in Between axle assembly engaged with final gear；The input axle assembly includes：Input shaft, a gear input gear assembly, two gear input gear assemblies and synchronizer, its In：Synchronizer is press-fitted on input shaft and axial restraint, and a gear input gear assembly and two gear input gear assemblies are arranged on together Walk device both sides and empty set is on input shaft, two gear input gears are engaged with two gear output shaft gears respectively, input shaft and driving electricity Machine output shaft realizes input axle assembly and drives the power transmission of motor by spline fitted.
- 2. two gear power drive systems of pure electric vehicle according to claim 1, it is characterized in that, described one gear input gear For assembly by a gear needle bearing empty set on input shaft, described two gear input gear assemblies pass through bearing of needle roller for 2nd gear empty set On input shaft.
- 3. two gear power drive systems of pure electric vehicle according to claim 2, it is characterized in that, described one gear input gear Assembly includes a gear input gear and a gear conjunction gear for welding, and two gears that described two gear input gear assemblies include welding are defeated Enter gear and two gear conjunction gears.
- 4. two gear power drive systems of pure electric vehicle according to claim 2, it is characterized in that, the input shaft both ends are set There are input shaft right end ball bearing and input shaft left end ball bearing, wherein：Input shaft right end ball bearing is interference fitted in by grommet On the input shaft shaft shoulder, input shaft left end ball bearing is press-fitted on the input shaft shaft shoulder by interference fit.
- 5. two gear power drive systems of pure electric vehicle according to claim 3, it is characterized in that, the countershaft assembly bag Include：Jackshaft left bearing, two gear output gears, jackshaft, a gear output gear and jackshaft right bearing, wherein：Two gear outputs Gear and a gear output gear are connected in jackshaft both ends by welding or spline, and jackshaft both ends are separately installed with a jackshaft left side Bearing and jackshaft right bearing, a gear output gear are engaged with a gear input shaft gear assembly, and two gear output gears and two gears are defeated Enter gear assembly engagement.
- 6. two gear power drive systems of pure electric vehicle according to claim 5, it is characterized in that, the differential assembly bag Include：Differential mechanism, differential bearing and final gear, wherein：Differential mechanism is arranged on differential bearing, and main ratio wheel passes through spiral shell Bolt is connected with differential mechanism, and final gear is engaged with jackshaft.
- 7. two gear power drive systems of pure electric vehicle according to claim 6, it is characterized in that, the differential assembly connects Halting mechanism is connected to, the halting mechanism includes park pawl and the parking ratchet wheel being correspondingly arranged therewith, the parking spine Wheel is fixed on differential assembly or is engaged with final gear.
- 8. two gear power drive systems of pure electric vehicle according to claim 1, it is characterized in that, the synchronizer is connected with Gear shift unit, the gear shift unit include：Shift motor, gear shifting speed reducer structure and shifting fork assembly, wherein：Shift motor exports Axis is connected with gear shifting speed reducer structure input shaft by shaft coupling, and shifting fork assembly is stuck on synchronizer gear sleeve.
- 9. the pure electric vehicle according to claim 7 or 8 keeps off power drive systems with two, it is characterized in that, the input shaft is total Into, countershaft assembly, differential assembly, gear shift unit and halting mechanism be arranged in transmission case body, driving electric machine casing and By positioning finger setting and being bolted between gear box casing, and sealed at faying face using gasket or fluid sealant；Electricity Casing body sets oil sealing at output shaft axis hole, and gear box casing sets oil sealing at input shaft axis hole, realizes that driving motor is done The isolation of chamber and the wet chamber of gearbox.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721050941.1U CN207333612U (en) | 2017-08-22 | 2017-08-22 | Two gear power drive systems of pure electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721050941.1U CN207333612U (en) | 2017-08-22 | 2017-08-22 | Two gear power drive systems of pure electric vehicle |
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| Publication Number | Publication Date |
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| CN207333612U true CN207333612U (en) | 2018-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721050941.1U Active CN207333612U (en) | 2017-08-22 | 2017-08-22 | Two gear power drive systems of pure electric vehicle |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109572417A (en) * | 2019-01-24 | 2019-04-05 | 中汽研（天津）汽车工程研究院有限公司 | A kind of integrated two gears electric drive assembly |
| CN109882578A (en) * | 2019-03-29 | 2019-06-14 | 重庆青山工业有限责任公司 | The input shaft assembly of two grades of electric gear shift(ing)s |
| CN110686054A (en) * | 2019-10-29 | 2020-01-14 | 重庆青山工业有限责任公司 | Two speed reducer of new energy automobile |
| CN113090728A (en) * | 2021-04-23 | 2021-07-09 | 杨升 | Two-gear gearbox with speed change compensation for electric automobile |
| CN113775708A (en) * | 2021-08-04 | 2021-12-10 | 一汽奔腾轿车有限公司 | Automatic gear shifting two-gear speed reducer matched with new energy pure electric automobile |
-
2017
- 2017-08-22 CN CN201721050941.1U patent/CN207333612U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109572417A (en) * | 2019-01-24 | 2019-04-05 | 中汽研（天津）汽车工程研究院有限公司 | A kind of integrated two gears electric drive assembly |
| CN109882578A (en) * | 2019-03-29 | 2019-06-14 | 重庆青山工业有限责任公司 | The input shaft assembly of two grades of electric gear shift(ing)s |
| CN110686054A (en) * | 2019-10-29 | 2020-01-14 | 重庆青山工业有限责任公司 | Two speed reducer of new energy automobile |
| CN113090728A (en) * | 2021-04-23 | 2021-07-09 | 杨升 | Two-gear gearbox with speed change compensation for electric automobile |
| CN113775708A (en) * | 2021-08-04 | 2021-12-10 | 一汽奔腾轿车有限公司 | Automatic gear shifting two-gear speed reducer matched with new energy pure electric automobile |
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