CN203039496U - All-in-one two-shift motor transmission for pure electric automobile - Google Patents

All-in-one two-shift motor transmission for pure electric automobile Download PDF

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Publication number
CN203039496U
CN203039496U CN2013200390018U CN201320039001U CN203039496U CN 203039496 U CN203039496 U CN 203039496U CN 2013200390018 U CN2013200390018 U CN 2013200390018U CN 201320039001 U CN201320039001 U CN 201320039001U CN 203039496 U CN203039496 U CN 203039496U
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China
Prior art keywords
shaft
motor
gear
sun gear
rotor
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CN2013200390018U
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Chinese (zh)
Inventor
赵韩
冯永恺
王昭
闫敏良
黄康
周志红
沙发明
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Hefei University of Technology
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Hefei University of Technology
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/64Electric machine technologies in electromobility

Abstract

The utility model relates to an all-in-one two-shift motor transmission for a pure electric automobile. The all-in-one two-shift motor transmission comprises a motor composed of a stator and a rotor, wherein an output end of the rotor is connected with an end of a sun gear shaft through a key; the stator which is corresponding to the output end of the rotor is fixedly connected with a motor housing; the motor housing is provided with an annular gear; a planetary gear is provided and is engaged with the sun gear and the annular gear; a wheel shaft of the planetary gear is fixedly connected with an end of a first planet carrier; the other end of the first planet carrier is connected with an output shaft in the radial direction through a first-shift clutch (C1); the output shaft is disposed coaxially with the sun gear shaft; and one side of the sun gear shaft is radially connected with the output shaft in the radial direction through a second-shift clutch (C2). The all-in-one two-shift motor transmission enables the motor to work in a high-efficiency zone for a long time, and increases a vehicle driving range; since the motor and the transmission are designed to be an integral, the axial dimension of a power assembly is reduced, and mechanical connection and noises are reduced; and the all-in-one two-shift motor transmission is simple in arrangement form, compact in structure, small in volume and light in weight, and thus accords with the principle of light automobile.

Description

The integral type two retaining motor transmissions that are used for pure electric automobile
Technical field
The utility model belongs to electric automobile drive technology field, is specifically related to the integral type two retaining motor transmissions for pure electric automobile.
Background technology
In recent years, the development of the automobile-used motor of China has obtained obvious progress.Aspect automobile-used design of electrical motor, adopt the integrated designing technique of structure, realized that motor and speed changer are in height integrated design and the application of machinery, electromagnetism, heat.Integrated and the integrated trend of power drive system is more obvious.At present, electric automobile on the market is the entrucking requirement of satisfying motor, most of producer with motor and speed changer employing independently two parts forms be assembled on the vehicle body, this mounting means is realized by the motor output shaft external splines is matched with the transmission input shaft internal spline.But so not only can increase mechanicalness noise, vibration, and motor front end housing and case of transmission be absolute construction, will certainly influence the layout in car load space.The patent documentation CN201110063409.4 of ChangAn Automobile company " a kind of drive motors of electric automobile and speed changer power integrated morphology " has proposed a kind of motor-speed changer integrated structure.What but the speed changing portion branch adopted in this structure is the decelerator of a gear, can make traction electric machine to provide higher instantaneous torque at Heng Zhuanjuqu like this, provides the higher speed of service at Heng Gongshuaiqu again.Simultaneously, there is the lower problem of motor working efficiency.
The utility model content
In order to improve motor working efficiency, increase the vehicle continual mileage, the utility model provides a kind of integral type two retaining retaining motor transmissions for pure electric automobile.
Be used for the integral type two retaining retaining motor transmissions of pure electric automobile, comprise the motor of being formed by stator, rotor and motor housing; The output of described rotor 1 is connecting an end of sun gear shaft 5 by key, sun gear shaft 5 is provided with central gear 6, the stator 2 corresponding with rotor 1 output is connected on the motor housing 3, and motor housing 3 is provided with ring gear 4, is provided with planetary gear 8 with central gear 6 and ring gear 4 engagements; One end of the wheel shaft of planetary gear 8 and first planet carrier 9 is connected, and the other end of first planet carrier 9 is connecting output shaft 7 radially by a retaining clutch C1; With the sun gear shaft 5 coaxial output shafts 7 that are provided with, a side of sun gear shaft 5 is radially connecting output shaft 7 radially by two retaining clutch C2.
Described output shaft 7 is hollow shaft, and an end of the sun gear shaft 5 corresponding with output shaft 7 is positioned at output shaft 7 by bearing 15.
Compared with the prior art, the beneficial effects of the utility model embody in the following areas:
1. the utility model becomes an integral body with driving motor for electric automobile with transmission design, has reduced the axial dimension of power assembly, has reduced mechanical connection and noise;
2. the utility model directly links to each other the drive motors rotor shaft with transmission gear, has avoided motor output shaft to cooperate the axiality tolerance of installing and causing with transmission input shaft, has eliminated the mechanical oscillation that bring thus;
3. this integral type motor transmission mechanism adopts two retaining speed changes, compares with present used for electric vehicle decelerator, and drive motors can work long hours in efficient district, increases the vehicle continual mileage;
4. this arrangement of mechanism form is simple, compact conformation, and volume is little, in light weight, meets the light-weighted principle of automobile.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is a kind of pure electric automobile drive system structure sketch.
Gear shaft cooperates cutaway view with output shaft centered by Fig. 3.
Sequence number among the last figure: rotor 1, stator 2, motor housing 3, ring gear 4, sun gear shaft 5, central gear 6, output shaft 7, planetary gear 8, first planet carrier 9, main gear 10, main gear wheel 11, differential mechanism 12, left wheel 13, right wheel 14, the bearing 15 of subtracting of reducing.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described by embodiment.
Embodiment 1
Referring to Fig. 1, the integral type two retaining motor transmissions that are used for pure electric automobile comprise the motor of being made up of stator 2, rotor 1 and motor housing 3.The output of rotor 1 is connecting an end of sun gear shaft 5 by key, and sun gear shaft 5 is provided with central gear 6, and the two is structure as a whole.The stator 2 corresponding with rotor 1 output is connected on the motor housing 3, and motor housing 3 is provided with ring gear 4, is provided with planetary gear 8 with central gear 6 and ring gear 4 engagements; One end of the wheel shaft of planetary gear 8 and first planet carrier 9 is connected, and the other end of first planet carrier 9 is connecting output shaft 7 radially by a retaining clutch C1; With the sun gear shaft 5 coaxial output shafts 7 that are provided with, a side of sun gear shaft 5 is radially connecting output shaft 7 radially by two retaining clutch C2.
Developing certain type pure electric automobile with reality is example, and a retaining gearratio is that 3.76, two retaining gearratios are 1.0.
Table 1 gear teeth numerical table
Gear Central gear Planetary gear Ring gear
The number of teeth 18 20 55
As shown in Figure 1, the integral type two retaining motor transmissions that are used for pure electric automobile have used following gearshift executive component: a dry dual clutch.
The executive component working condition of each gear is as shown in table 2.
Table 2 gearshift executive component worksheet
Annotate: " ● " expression combination in the table, " zero " represents to separate;
Each keeps off the power transmission line explanation, in conjunction with Fig. 1 and table 2.
1, neutral---N position
During the N position, clutch C1 and clutch C2 all do not work, and this moment, motor can't be with transmission of power to wheel, and vehicle relies on inertia traveling or comes to a halt.
2, forward gear---D position (rotor rotates counterclockwise)
(1) advance one the retaining (D1 retaining)
During the D1 retaining, clutch C1 work, clutch C2 does not work;
Power drives sun gear shaft 5 through rotor 1 and rotates counterclockwise, planetary gear 8 is around central gear 6 revolution, and ring gear 4 is fixing on the motor housing 3, and first planet carrier 9 is rotated counterclockwise with sun gear shaft 5, because clutch C1 work makes the planet carrier 9 of winning link to each other with output shaft 7.Power is passed to sun gear shaft 5 by rotor 1, is passed to first planet carrier 9 again, and final output shaft 7 makes the wheel outputting power that turns clockwise by main gear and the differential mechanism of subtracting.This retaining is middle bottom gear, low speed driving and climbing etc. in being mainly used in;
(2) advance two the retaining (D2 retaining)
During the D2 retaining, clutch C1 does not work, dry clutch C2 work;
Power drives sun gear shaft 5 through rotor 1 and rotates counterclockwise, because clutch C2 work makes sun gear shaft 5 link to each other with output shaft 7.Power directly is passed to output shaft 7 after being passed to sun gear shaft 5 by rotor 1, and makes the wheel outputting power that turns clockwise by main gear and the differential mechanism of subtracting.This retaining is mainly used in running at high speed for top gear.
3, reverse gear---R position (rotor clockwise rotates)
When reversing gear, clutch C1 work, clutch C2 does not work.Power transmission line is identical with the D1 retaining, because rotor 1 clockwise rotates, last wheel is rotated counterclockwise outputting power.
Embodiment 2:
Be used for the integral type two retaining motor transmission structures of pure electric automobile with embodiment 1, each keeps off power transmission line with embodiment 1.Difference is that gearratio changes to some extent, and the gearshift executive component is a wet-type dual-clutch.
Each gear number of teeth sees Table 3:
Table 3 gear teeth numerical table
Gear Central gear Planetary gear Ring gear
The number of teeth 43 17 77
This moment one, the retaining gearratio was 2.79., and two retaining gearratios are 1.0.
Embodiment 3:
Referring to Fig. 2 and Fig. 3, when output shaft 7 was hollow shaft, sun gear shaft 5 placed in the output shaft 7 by bearing 15; The master reduces gear 10 and is connected by key and output shaft 7; With main what reduce gear 10 engagements is the main gear wheel 11 that subtracts; Differential mechanism 12 subtracts gear wheel 11 by screw with the master and is connected; Left wheel 13 is supported on the semiaxis with right wheel 14, and is connected with differential mechanism 12 by key.

Claims (2)

1. the integral type two retaining motor transmissions that are used for pure electric automobile, comprise the motor of being formed by stator, rotor and motor housing, it is characterized in that: the output of described rotor (1) is connecting an end of sun gear shaft (5) by key, sun gear shaft (5) is provided with central gear (6), the stator (2) corresponding with rotor (1) output is connected on the motor housing (3), motor housing (3) is provided with ring gear (4), is provided with planetary gear (8) with central gear (6) and ring gear (4) engagement; One end of the wheel shaft of planetary gear (8) and first planet carrier (9) is connected, and the other end of first planet carrier (9) is connecting output shaft (7) radially by a retaining clutch C1; With the coaxial output shaft (7) that is provided with of sun gear shaft (5), a side of sun gear shaft (5) is radially connecting output shaft (7) radially by two retaining clutch C2.
2. the integral type two for pure electric automobile according to claim 1 is kept off motor transmissions, it is characterized in that: described output shaft (7) is hollow shaft, and an end of the sun gear shaft (5) corresponding with output shaft (7) is positioned at output shaft (7) by bearing (15).
CN2013200390018U 2013-01-25 2013-01-25 All-in-one two-shift motor transmission for pure electric automobile Active CN203039496U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103066748A (en) * 2013-01-25 2013-04-24 合肥工业大学 Integrated two-gear motor transmission for pure electric vehicle
CN103692907A (en) * 2014-01-03 2014-04-02 合肥工业大学 Power system assembly of electric vehicle
CN109286296A (en) * 2018-11-28 2019-01-29 华南智能机器人创新研究院 A kind of wheeled brushed DC motor of cycloidal pin

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103066748A (en) * 2013-01-25 2013-04-24 合肥工业大学 Integrated two-gear motor transmission for pure electric vehicle
CN103692907A (en) * 2014-01-03 2014-04-02 合肥工业大学 Power system assembly of electric vehicle
CN103692907B (en) * 2014-01-03 2016-01-27 合肥工业大学 A kind of power system assembly of electronlmobil
CN109286296A (en) * 2018-11-28 2019-01-29 华南智能机器人创新研究院 A kind of wheeled brushed DC motor of cycloidal pin

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