CN103009977A - Drive device for electric vehicle with direct drive motor - Google Patents

Drive device for electric vehicle with direct drive motor Download PDF

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Publication number
CN103009977A
CN103009977A CN2012105321160A CN201210532116A CN103009977A CN 103009977 A CN103009977 A CN 103009977A CN 2012105321160 A CN2012105321160 A CN 2012105321160A CN 201210532116 A CN201210532116 A CN 201210532116A CN 103009977 A CN103009977 A CN 103009977A
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China
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motor
end cover
coder
axle
drive
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CN2012105321160A
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CN103009977B (en
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赵升吨
赵永强
范淑琴
刘辰
贾熠
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Xian Jiaotong University
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Xian Jiaotong University
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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
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility

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  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

The invention relates to a drive device for an electric vehicle with a direct drive motor. The drive device comprises a motor, an encoder, a main speed reducer, a differential, a semi-axis, an axle housing and drive wheels. The electric vehicle uses a vehicle axle structure, the motor direct-drive technology and electric vehicle drive and transmission systems are combined, a servo motor is used as a drive motor of the vehicle, and the motor is combined with the main speed reducer, so that the part number of the motor and a drive axle is reduced, the transmission structure is simplified, the dynamic property and throughput capacity of the electric vehicle are improved, and simultaneously the transmission efficiency loss and the manufacturing cost are reduced. The device has the advantages of compact structure, reliable transmission, superior motor drive property, low control requirements, convenient in use and maintenance and the like, and is suitable for being popularized and used in medium and heavy-duty electric vehicles.

Description

A kind of actuating device of electric-machine directly-driven type electronlmobil
Technical field
The invention belongs to the AE field, relate to a kind of actuating device of electric-machine directly-driven type electronlmobil.
Background technology
Along with the day of Global Oil resource provision is becoming tight, green-house effect is more and more serious, and traditional internal combustion engine automobile is just standing acid test.In order to adapt to the current development low-carbon economy, walk the trend of sustainable development, driving power electronlmobil advantage high and anti-emission carburetor or zero-emission is more and more obvious.Countries in the world are from the strategy of automotive technology change and industrial upgrading, and numerous and confused the promulgation formulated preferential policies and measures, strengthens the dynamics of investment of electronlmobil, actively promote national ev industry development.Domestic numerous scientific research institutions, institution of higher learning and the car production producer of China falls over each other to carry out technical study and the industrialization development of electronlmobil.
Along with the development of motor technology, be used for the motor of battery-driven car and driving thereof, driving system is more and more.Consider the complexity of motor self character and automobile running working condition, electronlmobil is arranged change-speed box, power-transfer clutch, transmission shaft, coupler etc. between driving wheel and motor, to satisfy dynamic property and the crossing ability demand of automobile under different driving cycles.Therefore, so that the driving driving system volume of car load is large, complex structure, driving efficiency is low, reliability is low, and cost is high.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the object of the present invention is to provide a kind of actuating device of electric-machine directly-driven type electronlmobil, realize micro-miniaturisation, the high reliability of electric automobile driving apparatus, reduce the watt loss of transmission of power, simplify drive mechanism, reduce the cost of electronlmobil.
In order to achieve the above object, the present invention takes following technical scheme:
A kind of actuating device of electric-machine directly-driven type electronlmobil comprises a motor 7, a coder 8, a main reduction gear, a diff 3, an axle housing 2, two semiaxis 1 and two driving wheels 10, and electronlmobil adopts the rear-axle drive form; Described motor 7 adopts disk structures, and before, during and after being divided into three sections, leading portion is motor front end cover 7-1, and the stage casing is motor housing 7-2, and back segment is back end cover for motor 7-4; Motor front end cover 7-1 and back end cover for motor 7-4 adopt the disc flange structure, and it is the hollow tubular construction that the disc outside adds radiating fin that motor housing 7-2 adopts the inboard in cross section; One flange seam is respectively arranged on the end face of motor front end cover 7-1 and back end cover for motor 7-4, and the inboard disc of flange seam and motor housing 7-2 matches; By bolt and nut group 7-8 motor front end cover 7-1 and back end cover for motor 7-4 are connected on two end faces of motor housing 7-2, the bolt of bolt and nut group 7-8 is arranged in the groove of adjacent two radiating fins of motor housing 7-2, and rotor 7-9 is fixed on the motor shaft 7-5 by key; Coder 8 is comprised of coder rotor 8-2 and coder stator 8-1, and coder stator 8-1 is coaxial with coder rotor 8-2, and is arranged in the radial outside of coder rotor 8-2; Coder stator 8-1 is connected to the outer face of back end cover for motor 7-4; Coder rotor 8-2 is connected to the end of motor shaft 7-5, and rotates with motor shaft 7-5; Motor front end cover 7-1 and final drive casing 6 are made of one, and are bolted on the axle housing 2; Main reduction gear is comprised of driving gear 5 and the driven gear 4 that is engaged with, and the axle of driving gear 5 and motor shaft 7-5 are made of one, and rotor 7-9 rotates with motor shaft 7-5 and driving gear 5; Driven gear 4 and the differential gear box 3-1 of main reduction gear link together, and drive diff 3 motions; Diff 3 is comprised of differential gear box 3-1, four satellite gear 3-2, two axle side gear 3-3, center cross 3-4, four axles of center cross 3-4 are connected with differential gear box 3-1, four satellite gear 3-2 empty sets are on four axles of center cross 3-4, and two axle side gear 3-3 mesh with four satellite gear 3-2 respectively; Differential gear box 3-1 is installed on the axle housing 2 through bearing; The motor power that is passed over by main reduction gear 6 passes to 1, two semiaxis 1 of two semiaxis through two axle side gear 3-3 of diff 3 and passes from axle housing 2, and two the driving wheels 10 that drive both sides rotate.
Described coder stator 8-1 is connected on the motor front end cover 7-1, and coder rotor 8-2 is connected to motor shaft 7-5 end, captives joint with motor shaft 7-5 is circumferential with key; Coder incoming line 8-3 is opened in coder stator 8-1 shell radially near motor front end cover 7-1 position.
Have motor incoming line 7-7 on the end face of back end cover for motor 7-4, motor power-supply wire is introduced in the motor 7 from motor incoming line 7-7.
The present invention adopts the electric-machine directly-driven technology, and motor is combined with the main reduction gear of automobile drive axle, when improving electric powered motor, braking ability, has greatly simplified the driving system of electronlmobil.This device has compact conformation, and low to the electric machine control requirement, working service is convenient, and the advantages such as reliable transmission are highly suitable in the electronlmobil and promote the use of.
Description of drawings
Fig. 1 is overall structure scheme drawing of the present invention.
Fig. 2 is motor casing cross-sectional view of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is described in detail.
See figures.1.and.2, a kind of actuating device of electric-machine directly-driven type electronlmobil, comprise a motor 7, a coder 8, a main reduction gear, a diff 3, an axle housing 2, two semiaxis 1 and two driving wheels 10, electronlmobil adopts the rear-axle drive form, motor 7 adopts DC servo motor or AC servo motor, and motor 7 comprises motor front end cover 7-1, motor housing 7-2, motor stator 7-3, rotor 7-9, back end cover for motor 7-4, motor shaft 7-5 and bolt and nut group 7-8; Coder 8 is comprised of coder rotor 8-2 and coder stator 8-1; Coder stator 8-1 is connected to the outer face of back end cover for motor 7-4, and coder rotor 8-2 is connected to the end of motor shaft 7-5, and rotates with motor shaft 7-5; Motor front end cover 7-1 and final drive casing 6 are made of one, and motor 7 is linked to each other with main reduction gear, are bolted on the axle housing 2; Main reduction gear is comprised of driving gear 5 and driven gear 4, and the axle of driving gear 5 and motor shaft 7-5 are made of one, and rotor 7-9 is fixed on the motor shaft 7-5 by key, and rotor 7-9 rotates with motor shaft 7-5 and driving gear 5; Driven gear 4 and the differential gear box 3-1 of main reduction gear link together, and drive diff 3 motions.Diff 3 is comprised of differential gear box 3-1, four satellite gear 3-2, two axle side gear 3-3, center cross 3-4, four axles of center cross 3-4 are connected with differential gear box 3-1, four satellite gear 3-2 empty sets are on four axles of center cross 3-4, two axle side gear 3-3 mesh with four satellite gears respectively, and differential gear box 3-1 is connected on the axle housing 2 through bearing; The motor power that is passed over by main reduction gear passes to 1, two semiaxis 1 of two semiaxis through two axle side gear 3-3 of diff 3 and passes from the interstitial hole of axle housing 2, and two the driving wheels 10 that drive both sides rotate.
Input afterwards motor 7 by the direct supply via controller conversion that storage battery provides, the moment of torsion that motor 7 produces is sent to automobile driving wheel 10 through main reduction gear, diff 3, semiaxis 1 successively.Adopt the rear-axle drive form at electronlmobil, for simplifying front-axle structure, optimize the structural arrangement of car load, the dynamic property and the braking ability that improve car load have outstanding advantage; Significantly improve through the moment of torsion after the main reduction gear deceleration, be conducive to improve the power input of car load; Adopt the connection mode of diff 3 and semiaxis 1 can improve automobile cornering driveability and crossing ability.
The purpose that adopts the electric-machine directly-driven technology is to simplify transmission device and drive path, reduces the watt loss of power.
The realization of electric-machine directly-driven technology shows two aspects among the present invention:
Motor 7 adopts DC servo motor, adopts coder 8 as the harvester of motor 7 rotating speeds and dtc signal in motor 7, the startup of control motor 7, stops, move, the driving cycle different according to automobile, the output torque and rotational speed of adjustment motor 7.
Motor 7 and main reduction gear combine, and at first, motor front end cover 7-1 and final drive casing 6 are made of one, and on the basis of original final drive casing, add the docking that a flange is realized motor 1 and main reduction gear.Secondly, the driving gear 5 of main reduction gear is made the form of gear wheel shaft, gear wheel shaft is the double motor shaft 7-5 that is simultaneously, with key rotor 7-9 is connected on driving gear 5 axles.By above dual mode, increase in the little situation at the shell of main reduction gear and number of parts, motor 7 and main reduction gear are combined realize directly driving.
Described motor 7 adopts disk structures, and before, during and after being divided into three sections, leading portion is motor front end cover 7-1, and the stage casing is motor housing 7-2, and back segment is back end cover for motor 7-4; Motor front end cover 7-1 and back end cover for motor 7-4 adopt the disc flange structure, and motor housing 7-2 adopts the cross section to be the inboard tubular construction that adds radiating fin for disc; The flange seam is arranged on the end face of motor front end cover 7-1 and back end cover for motor 7-4, and the inboard disc of flange seam and motor housing 7-2 matches; Be uniformly distributed with 6 or 8 through holes on motor front end cover 7-1 and the back end cover for motor 7-4 along the circumference, by bolt and nut group 7-8 motor front end cover 7-1 and back end cover for motor 7-4 are connected on two end faces of motor housing 7-2, the bolt of bolt and nut group 7-8 is arranged in the groove of adjacent two radiating fins on the motor housing 7-2.
Motor housing 7-2 adopts the cross section can adopt aluminum alloy to make profile structure for inboard for disc adds the tubular construction of radiating fin, does not need again to process directly to cut according to the motor axial length, and is also very favourable for the productive costs of reduction motor like this.
Described coder stator 8-1 is connected on the motor front end cover 7-1, and coder rotor 8-2 is connected to motor shaft 7-5 end, captives joint with motor shaft 7-5 is circumferential with key; Coder incoming line 8-3 is opened in coder stator 8-1 shell radially near motor front end cover 7-1 position.
Coder 8 feeds back to electric machine controller for detection of the output torque and rotational speed of motor 7.Motor power-supply wire 7-6 and coder line 8-4 are more close, and the two can be fixed on the back end cover for motor 7-4 by stepping up element.
Have motor incoming line 7-7 on the end face of back end cover for motor 7-4, motor power-supply wire is introduced in the motor 7 from motor incoming line 7-7.

Claims (3)

1. the actuating device of an electric-machine directly-driven type electronlmobil, comprise a motor (7), a coder (8), main reduction gear, a diff (3), an axle housing (2), two semiaxis (1) and two driving wheels (10), electronlmobil adopts the rear-axle drive form; Described motor (7) adopts disk structure, and before, during and after being divided into three sections, leading portion is motor front end cover (7-1), and the stage casing is motor housing (7-2), and back segment is back end cover for motor (7-4); Motor front end cover (7-1) and back end cover for motor (7-4) adopt the disc flange structure, and it is the hollow tubular construction that the disc outside adds radiating fin that motor housing (7-2) adopts the inboard in cross section; One flange seam is respectively arranged on the end face of motor front end cover (7-1) and back end cover for motor (7-4), and the inboard disc of flange seam and motor housing (7-2) matches; By bolt and nut group (7-8) motor front end cover (7-1) and back end cover for motor (7-4) are connected on two end faces of motor housing (7-2), the bolt of bolt and nut group (7-8) is arranged in the groove of adjacent two radiating fins of motor housing (7-2), and rotor (7-9) is fixed on the motor shaft (7-5) by key; Coder (8) is comprised of coder rotor (8-2) and coder stator (8-1), and coder stator (8-1) is coaxial with coder rotor (8-2), and is arranged in the radial outside of coder rotor (8-2); Coder stator (8-1) is connected to the outer face of back end cover for motor (7-4); Coder rotor (8-2) is connected to the end of motor shaft (7-5), and rotates with motor shaft (7-5); Motor front end cover (7-1) is made of one with final drive casing (6), is bolted on the axle housing (2); Main reduction gear is comprised of driving gear (5) and the driven gear (4) that is engaged with, and the axle of driving gear (5) and motor shaft (7-5) are made of one, and rotor (7-9) rotates with motor shaft (7-5) and driving gear (5); The driven gear of main reduction gear (4) links together with differential gear box (3-1), drives diff (3) motion; Diff (3) is comprised of differential gear box (3-1), four satellite gears (3-2), two axle side gears (3-3), a center cross (3-4), four axles of center cross (3-4) are connected with differential gear box (3-1), four satellite gears (3-2) empty set is on four axles of center cross (3-4), and two axle side gears (3-3) mesh with four satellite gears (3-2) respectively; Differential gear box (3-1) is installed on the axle housing (2) through bearing; The motor power that is passed over by main reduction gear (6) passes to two semiaxis (1) through two axle side gears (3-3) of diff (3), and two semiaxis (1) pass from axle housing (2), and drives two driving wheels (10) rotation of both sides.
2. the actuating device of a kind of electric-machine directly-driven type electronlmobil according to claim 1, it is characterized in that: described coder stator (8-1) is connected on the motor front end cover (7-1), coder rotor (8-2) is connected to motor shaft (7-5) end, circumferentially captives joint with motor shaft (7-5) with key; Coder incoming line (8-3) is opened in coder stator (8-1) shell radially near motor front end cover (7-1) position.
3. the actuating device of a kind of electric-machine directly-driven type electronlmobil according to claim 1 is characterized in that: have motor incoming line (7-7) on the end face of back end cover for motor (7-4), motor power-supply wire is introduced in the motor (7) from motor incoming line (7-7).
CN201210532116.0A 2012-12-11 2012-12-11 Drive device for electric vehicle with direct drive motor Expired - Fee Related CN103009977B (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103754111A (en) * 2014-02-13 2014-04-30 合肥工业大学 Differential and change speed integrated double-gear rear driving assembly of electric vehicle
CN103846712A (en) * 2014-02-12 2014-06-11 山东宏泰机械科技股份有限公司 Combined type rotation driving unit
CN105398332A (en) * 2015-12-10 2016-03-16 浙江环电新能源汽车零部件有限公司 Electric vehicle modular power integrated system
CN106241603A (en) * 2016-09-29 2016-12-21 广西曼彻彼斯自动化设备有限公司 Rail logistics trolley driver
CN106515404A (en) * 2016-12-27 2017-03-22 重庆博迪威电动汽车有限责任公司 Electrombile power transmission integrated system
CN107249916A (en) * 2014-12-01 2017-10-13 Gkn汽车有限公司 Electric driver and the powertrain device with such electric driver
CN107351668A (en) * 2017-06-29 2017-11-17 江西博能上饶客车有限公司 Electric drive axle system and electric automobile
CN108189665A (en) * 2018-02-11 2018-06-22 浙江华亦海汽车电子科技有限公司 A kind of drive system of electric automobile configuration
CN111038238A (en) * 2019-12-25 2020-04-21 北京福田戴姆勒汽车有限公司 Power system and electric truck with same
CN113799565A (en) * 2021-11-03 2021-12-17 合肥海源机械有限公司 Intelligent servo load driving platform

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CN102390280A (en) * 2011-09-30 2012-03-28 上海瑞尔实业有限公司 Electric car power assembly with automatic transmission
CN102490597A (en) * 2011-12-01 2012-06-13 上海瑞尔实业有限公司 Power assembly system for automatic speed change of electric automobile

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Publication number Priority date Publication date Assignee Title
JPH06339248A (en) * 1993-05-28 1994-12-06 Aisin Aw Co Ltd Driving equipment for electric car
US20080106224A1 (en) * 2006-11-02 2008-05-08 Zhenxing Fu Sensorless Position Detection for a Brushless Direct Current Motor During Inverter Standby
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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103846712A (en) * 2014-02-12 2014-06-11 山东宏泰机械科技股份有限公司 Combined type rotation driving unit
CN103754111A (en) * 2014-02-13 2014-04-30 合肥工业大学 Differential and change speed integrated double-gear rear driving assembly of electric vehicle
CN107249916A (en) * 2014-12-01 2017-10-13 Gkn汽车有限公司 Electric driver and the powertrain device with such electric driver
CN107249916B (en) * 2014-12-01 2019-09-27 Gkn汽车有限公司 Electric driver and powertrain device with such electric driver
CN105398332A (en) * 2015-12-10 2016-03-16 浙江环电新能源汽车零部件有限公司 Electric vehicle modular power integrated system
CN106241603A (en) * 2016-09-29 2016-12-21 广西曼彻彼斯自动化设备有限公司 Rail logistics trolley driver
CN106515404A (en) * 2016-12-27 2017-03-22 重庆博迪威电动汽车有限责任公司 Electrombile power transmission integrated system
CN106515404B (en) * 2016-12-27 2019-03-15 重庆博迪威电动汽车有限责任公司 The transmission integrated system of electrical vehicular power
CN107351668A (en) * 2017-06-29 2017-11-17 江西博能上饶客车有限公司 Electric drive axle system and electric automobile
CN108189665A (en) * 2018-02-11 2018-06-22 浙江华亦海汽车电子科技有限公司 A kind of drive system of electric automobile configuration
CN111038238A (en) * 2019-12-25 2020-04-21 北京福田戴姆勒汽车有限公司 Power system and electric truck with same
CN113799565A (en) * 2021-11-03 2021-12-17 合肥海源机械有限公司 Intelligent servo load driving platform

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