CN101513821A - Electric automobile drive axle - Google Patents
Electric automobile drive axle Download PDFInfo
- Publication number
- CN101513821A CN101513821A CNA2009100295952A CN200910029595A CN101513821A CN 101513821 A CN101513821 A CN 101513821A CN A2009100295952 A CNA2009100295952 A CN A2009100295952A CN 200910029595 A CN200910029595 A CN 200910029595A CN 101513821 A CN101513821 A CN 101513821A
- Authority
- CN
- China
- Prior art keywords
- motor
- drive axle
- electric automobile
- automobile drive
- differential
- Prior art date
- 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.)
- Pending
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Classifications
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
Abstract
The invention discloses an electric automobile drive axle, belonging to the traction walking and differential turning device of electric vehicles and mainly comprising a traction motor, a differential, a half axle and a central axle. The traction motor is a hollow motor with medium speed, the hollow rotor shaft of the motor is connected with a shell of the differential in a coaxial way, and the central axle passes through an inner cavity of the hollow rotor shaft of motor. Trough further improvement, the differential is arranged inside the motor shell, the motor shell is arranged on the lateral wall of a half axle tube, the motor speed is 600-7000r/min, the power is greater than or equal to 2kW. The electric automobile drive axle leaves out the positive speed gearbox, and the walking or turning of the automobile is realized in a manner that the motor directly drives the differential to drive the half axle to rotate. The electric automobile drive axle is characterized by compact structure, small volume and light weight, and can reduce noise, power dissipation and environmental pollution. Furthermore, owing to the coaxial transmission of the motor and the differential, the electric automobile drive axle can reduce the bending moment of the elements, optimize the force condition, avoid the bending deformation, improve the service performance and prolong the service life.
Description
Technical field
The present invention relates to a kind of drive axle device that mainly constitutes that is used for electronlmobil by traction electric machine, diff and semiaxis.
Background technology
Increasingly mature along with the enhancing of the development of communication, environmental consciousness and battery technology, the application of electronlmobil more and more widely.The drive axle that be used for back-wheel drive or f-w-d in the electronlmobil, mainly is made of traction electric machine, diff and semiaxis provides the automobile onward impulse, realizes the important device that automobile is kept straight on or turned flexibly smoothly.In the existing electric automobile drive axle, traction electric machine is installed in a side of semiaxis and semiaxle tube, and motor drives walking that semiaxis rotation realize vehicle with transmission of torque to diff by drop-gear box.There is following problem in this structure: 1, because the existence of drop-gear box, bring from great, noise is big, watt loss is big, and the drawback of the easy contaminated environment of lubricating oil; 2, traction electric machine and drop-gear box are with respect to diff and the eccentric setting of semiaxis, and not only complex structure takes up room greatly, and make drive axle bear big moment of flexure, easily produce flexural deformation, often cause serious consequence.
Summary of the invention
The technical problem to be solved in the present invention is to overcome weak point of the prior art, provide a kind of simple in structure, volume is little, in light weight, can reduce noise, power consumption and environmental pollution, particularly can optimize force-bearing situation, avoid flexural deformation, improve the electric automobile drive axle of in-use performance.
Technical scheme of the present invention is: electric automobile drive axle comprises traction electric machine, diff and the semiaxis and the center shaft that are connected with planetary wheel in the diff, semiaxis is installed in the semiaxle tube that is fixed on the vehicle body, improvements are: described traction electric machine is the middling speed hollow motor, the hollow rotor shaft of this motor is connected with the shell of described diff is coaxial, and described center shaft passes the hollow rotor shaft inner chamber of motor.
Further scheme is: described diff is installed in the inside of motor housing; The hollow rotor shaft of described motor and diff shell coaxial is connected to that interference is connected or key connects or fastener connects; The shell filling of described motor is on the semiaxle tube lateral wall; Described rotating speed of motor is 600～700r/min, power 〉=2kw.
According to above technical scheme, important improvement of the present invention is: saved drop-gear box in the drive axle device, adopt middling speed hollow traction electric machine, motor is directly installed on the semiaxle tube (bridge tube), the diff shell is coaxial in the hollow rotor shaft of motor and the drive axle is connected, and the motor direct-drive diff drives the semiaxis rotation and realizes the walking of automobile or turn round.This improvement makes this apparatus structure compactness, and volume is little, and is in light weight, saves drop-gear box middle gear mechanism, can reduce noise, power consumption, avoids leakage of oil to cause environmental pollution.And this new design plan adopts the crankshaft drive of motor, diff, reduces the moment of flexure that the drive axle member is born greatly, optimizes force-bearing situation, avoids flexural deformation, and then strengthens the load-carrying capacity of drive axle, improves in-use performance, increases the service life.As the further improvement of above technical scheme, the diff in the drive axle is installed in the inside of motor housing, and further simplified structure reduces the pollution of diff and impaired.The hollow rotor shaft of motor adopts interference to be press-fitted connection with the coaxial big I that is connected according to transmitted power of diff shell, or the key connection, or fasteners connections such as screw, nut, is convenient to loading and unloading and maintenance.The shell filling of above-mentioned motor helps strengthening the rigidity and the bending strength of semiaxle tube on the lateral wall of semiaxle tube, improve the load-carrying capacity of drive axle.It is 600～700r/min that above-mentioned traction electric machine preferably adopts rotating speed, and the middling speed hollow motor of power 2～4kw is suitable for electronlmobil (three-wheel, four-wheel, the forklift etc.) use of speed less than 60km.
Description of drawings
Accompanying drawing is a structural representation of the present invention.
The specific embodiment
Referring to accompanying drawing, electric automobile drive axle mainly is made of traction electric machine 1, diff 2 and the semiaxis 5 that is connected with planetary wheel in the diff and center shaft 8, and semiaxis is installed in the semiaxle tube 4 that is fixed on the vehicle body.Described traction electric machine is rotating speed 650r/min, the middling speed hollow motor of power 2.5kw, the hollow rotor shaft 7 of motor is connected so that the interference press-fit is coaxial with the shell 6 of described diff, center shaft 8 passes the hollow rotor shaft inner chamber of motor, merges and makes a major semiaxis satisfying under the situation of load the semiaxis of this center shaft 8 and the same side for the vehicle of steamboat distance.Diff 2 is installed in the inside of motor housing 3, and motor housing is installed on the lateral wall of semiaxle tube 4.
Claims (5)
1, a kind of electric automobile drive axle, comprise traction electric machine, diff and the semiaxis and the center shaft that are connected with planetary wheel in the diff, semiaxis is installed in the semiaxle tube that is fixed on the vehicle body, it is characterized in that: described traction electric machine is the middling speed hollow motor, the hollow rotor shaft of this motor is connected with the shell of described diff is coaxial, and described center shaft passes the hollow rotor shaft inner chamber of motor.
2, by the described electric automobile drive axle of claim 1, it is characterized in that: described diff is installed in the inside of motor housing.
3, by the described electric automobile drive axle of claim 1, it is characterized in that: the hollow rotor shaft of described motor and diff shell coaxial is connected to that interference is connected or key connects or the fastener connection.
4, by the described electric automobile drive axle of claim 1, it is characterized in that: the shell filling of described motor is on the semiaxle tube lateral wall.
5, by the described electric automobile drive axle of claim 1, it is characterized in that: described rotating speed of motor is 600～700r/min, power 〉=2kw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100295952A CN101513821A (en) | 2009-03-26 | 2009-03-26 | Electric automobile drive axle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100295952A CN101513821A (en) | 2009-03-26 | 2009-03-26 | Electric automobile drive axle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101513821A true CN101513821A (en) | 2009-08-26 |
Family
ID=41038502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100295952A Pending CN101513821A (en) | 2009-03-26 | 2009-03-26 | Electric automobile drive axle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101513821A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102039817A (en) * | 2009-10-13 | 2011-05-04 | 李宝平 | Power transmission system of electric transportation vehicle and electric transportation vehicle |
| CN101707412B (en) * | 2009-11-13 | 2012-05-09 | 北京科技大学 | Driving motor with function of differential speed output |
| WO2016201705A1 (en) * | 2015-06-19 | 2016-12-22 | Robert Bosch Gmbh | Electric vehicle and driving system for electric vehicle |
| CN106515425A (en) * | 2017-01-20 | 2017-03-22 | 吉林大学 | Engine and motor direct-drive hybrid power device and control method thereof, as well as automobile |
| 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 |
| CN112092540A (en) * | 2020-08-24 | 2020-12-18 | 北汽福田汽车股份有限公司 | Electric drive axle assembly and vehicle |
| CN113525052A (en) * | 2020-04-21 | 2021-10-22 | 中车株洲电力机车研究所有限公司 | Electrically-driven axle and new energy automobile |
| WO2024060274A1 (en) * | 2022-09-22 | 2024-03-28 | 内蒙古第一机械集团股份有限公司 | Active cell integrated electrically-driven powertrain |
-
2009
- 2009-03-26 CN CNA2009100295952A patent/CN101513821A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102039817A (en) * | 2009-10-13 | 2011-05-04 | 李宝平 | Power transmission system of electric transportation vehicle and electric transportation vehicle |
| CN101707412B (en) * | 2009-11-13 | 2012-05-09 | 北京科技大学 | Driving motor with function of differential speed output |
| WO2016201705A1 (en) * | 2015-06-19 | 2016-12-22 | Robert Bosch Gmbh | Electric vehicle and driving system for electric vehicle |
| CN107709147A (en) * | 2015-06-19 | 2018-02-16 | 罗伯特·博世有限公司 | Electric vehicle and the drive system for electric vehicle |
| JP2018520623A (en) * | 2015-06-19 | 2018-07-26 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツングＲｏｂｅｒｔ Ｂｏｓｃｈ Ｇｍｂｈ | Electric vehicle and drive system for electric vehicle |
| US10464633B2 (en) | 2015-06-19 | 2019-11-05 | Robert Bosch Gmbh | Electric vehicle and driving system for electric vehicle |
| CN106515425A (en) * | 2017-01-20 | 2017-03-22 | 吉林大学 | Engine and motor direct-drive hybrid power device and control method thereof, as well as automobile |
| 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 |
| CN113525052A (en) * | 2020-04-21 | 2021-10-22 | 中车株洲电力机车研究所有限公司 | Electrically-driven axle and new energy automobile |
| CN112092540A (en) * | 2020-08-24 | 2020-12-18 | 北汽福田汽车股份有限公司 | Electric drive axle assembly and vehicle |
| WO2024060274A1 (en) * | 2022-09-22 | 2024-03-28 | 内蒙古第一机械集团股份有限公司 | Active cell integrated electrically-driven powertrain |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090826 |