CN104442370A - Electric drive axle system - Google Patents
Electric drive axle system Download PDFInfo
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- CN104442370A CN104442370A CN201410679425.XA CN201410679425A CN104442370A CN 104442370 A CN104442370 A CN 104442370A CN 201410679425 A CN201410679425 A CN 201410679425A CN 104442370 A CN104442370 A CN 104442370A
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Abstract
The invention provides an electric drive axle system which is characterized in that a counter-rotating dual-rotor motor, a first gear transmission mechanism, a second gear transmission mechanism, cardan joints, transmission shafts, a first auxiliary motor and a second auxiliary motor. Both the first gear transmission mechanism and the second gear transmission mechanism comprise drive wheels and driven wheels, wherein the drive wheels are meshed with the driven wheels. An inner rotor output shaft and an outer rotor output shaft of the counter-rotating dual-rotor motor are connected with the drive wheel of the first gear transmission mechanism and the drive wheel of the second gear transmission mechanism respectively. The driven wheel of the first gear transmission mechanism and the drive wheel of the second gear transmission mechanism are connected with wheel hubs on the two sides through the cardan joints and the transmission shafts respectively. The first auxiliary motor and the second auxiliary motor are connected with the driven wheel of the second gear transmission mechanism and the driven wheel of the first gear transmission mechanism through clutches. The electric drive axle system has the functions of general drive, auxiliary combined drive, energy recycling and differential control and can switch quickly among the four modes.
Description
Technical field
The invention belongs to pure electric automobile drive system technical field, be specifically related to a kind of electric drive axle system.
Background technology
Pure electric automobile is as the future automobile developing direction can alleviating energy problem and environmental problem, and increasing scientific research institution, colleges and universities and enterprise all increase input to the research of pure electric automobile.Novel pure electronlmobil mainly adopts power drive, and compared with conventional mechanical transmission, electric transmission has many good qualities, and as complete vehicle structure is arranged, electrodeless variable-speed, improves car load tractive performance and economic performance.But due to the restriction of electric motor and controller technology, pure electric automobile cannot its advantage of maximized performance, as occurred, energy regenerating falls flat and the problem such as differential control poor effect.
Summary of the invention
For Shortcomings in prior art, the invention provides a kind of electric drive axle system, by the effective control to each drive motor in this electric drive axle system, realize vehicular drive, combine the functions such as driving, energy regenerating, electronic differential, to meet the different operating mode of vehicle to the demand of power drive system.
The present invention realizes above-mentioned technical purpose by following technological means.
A kind of electric drive axle system, it is characterized in that, comprise anti-direction dual-rotor motor, the first gear drive, the second gear drive, universal-joint, transmission shaft, the first helper motor, the second helper motor, described first gear drive, the second gear drive include the driving wheel and flower wheel that are meshed and are constant speed drive; The internal rotor output shaft of described anti-direction dual-rotor motor is connected with the driving wheel of the first gear drive, the flower wheel of the first gear drive is connected with left side wheel hub by universal-joint, transmission shaft, and the flower wheel of described first gear drive is also connected with the first helper motor; The outer rotor output shaft of described anti-direction dual-rotor motor is connected with the driving wheel of the second gear drive, the driving wheel of the second gear drive is connected with right side wheel hub by universal-joint, transmission shaft, and the flower wheel of described second gear drive is connected with the second helper motor.
Further, first clutch, second clutch is also respectively arranged with between the flower wheel of the flower wheel of described first helper motor, the second helper motor and the first gear drive, the second gear drive.
Further, described electric drive axle system also comprises controller, and described controller is connected with first clutch, second clutch, for controlling the mode of operation of first clutch, second clutch.
Further, described controller is also connected with anti-direction dual-rotor motor, the first helper motor, the second helper motor, and also comprise in described controller for controlling the first helper motor, the second helper motor in the helper motor control module of electrical generator, the conversion of electrical motor two kinds of mode of operations, and for the anti-direction dual-rotor motor control module of the mode of operation that controls anti-direction dual-rotor motor.
Further, described electric drive axle system also comprises power supply storage equipment, and described power supply storage equipment is connected with the first helper motor, the second helper motor respectively.
Electric drive axle system of the present invention take anti-direction dual-rotor motor as major impetus output source, and the level of torque that two ends export is identical, direction is contrary; The direction of anti-direction dual-rotor motor Driving Torque is changed by the first gear drive.First helper motor, the second helper motor are connected with the flower wheel of the first gear drive, the flower wheel of the second gear drive, form associating driving.
By being also respectively arranged with first clutch, second clutch between the flower wheel of the flower wheel of described first helper motor, the second helper motor and the first gear drive, the second gear drive, increase controller simultaneously, described electric drive axle system can be made to have common driving, assist and combine driving, energy regenerating, differential control four kinds of functions, and can by controller to the quick switching of the control realization of power-transfer clutch, helper motor between four kinds of different modes.
Particularly:
The common drive pattern of electric drive axle: anti-direction dual-rotor motor is according to vehicle needs Driving Torque, first clutch, second clutch are in released state, first helper motor, the second helper motor do not work, i.e. unpowered transmission between helper motor and electric drive axle, the torque of the internal rotor output shaft output of anti-direction dual-rotor motor inputs the driving wheel of the first gear system, power changes after torque direction through flower wheel, is exported pass to left side wheel hub through universal-joint, axle drive shaft, universal-joint by flower wheel.The torque that outer rotor output shaft exports inputs the driving wheel of the second gear system, and now flower wheel is in idling conditions, and power thus driving wheel exports wheel hub on the right side of universal-joint, axle drive shaft, universal-joint pass to.
The auxiliary associating drive pattern of electric drive axle: anti-direction dual-rotor motor is according to vehicle needs Driving Torque, two helper motors work simultaneously simultaneously, first clutch, second clutch combines, i.e. dynamic transmission between helper motor and electric drive axle, the torque of the internal rotor output shaft output of anti-direction dual-rotor motor inputs the driving wheel of the first gear system, the torque that first helper motor exports passes to flower wheel through first clutch, formation torque superposes, Driving Torque is exported by flower wheel and passes to constant-velocity universal joint, axle drive shaft, constant-velocity universal joint is to left side wheel hub, the torque that outer rotor output shaft exports inputs the driving wheel of the second gear system, the torque that second helper motor exports passes to flower wheel through second clutch, also torque superposition is formed, torque is exported by driving wheel and passes to constant-velocity universal joint, axle drive shaft, constant-velocity universal joint to right side wheel hub, drives vehicle.
The energy recuperation mode of electric drive axle: anti-direction dual-rotor motor is Driving Torque not, but two helper motors are simultaneously with generator mode, first clutch, second clutch combines, i.e. dynamic transmission between helper motor and electric drive axle, wheel hub passes through universal-joint, axle drive shaft, universal-joint transmitting torque is to the first gear drive, on second gear drive, first clutch is passed through in torque, second clutch is delivered to the first helper motor, on second helper motor, first helper motor, the rotor of the rotation of the second helper motor and stator form electrical generator, by the energy storage of recovery in power supply storage equipment, reach the object of vehicle retarder brake simultaneously.
The Electronic differential control pattern of electric drive axle: electric drive axle electronlmobil electronic differential functional realiey adopts Stator-Quantities Control usually, the output torque of outboard wheels in namely adjusting during Vehicular turn.For vehicle left-hand rotation, left side wheel torque reduction when turning to, right side increase.Electric drive axle system differential function realizing method in the present invention is as follows: anti-direction dual-rotor motor Driving Torque, first clutch, second clutch combine, first helper motor is with generator mode, first helper motor reaches with energy recuperation mode and reduces the torque that left side outputs to wheel hub, and the torque making left side output to wheel is less than the torque that anti-direction dual-rotor motor exports; Second helper motor is with motor mode, second helper motor reaches to combine drive pattern the torque that increase right side outputs to wheel hub, the torque making right side output to wheel is greater than the torque that anti-direction dual-rotor motor exports, left and right wheels Driving Torque difference is realized with this, concrete difference by differential speed of vehicle control policy and electric machine controller cooperation control, can realize the electronic differential function of vehicle.
Accompanying drawing explanation
Fig. 1 is the constructional drawing of electric drive axle system one embodiment of the present invention.
Description of reference numerals is as follows:
Wheel hub on the left of 1-, 2-universal-joint, 3-transmission shaft, 4-anti-direction dual-rotor motor, 5-first gear drive, 6-second gear drive, 7-first clutch, 8-first helper motor, 9-internal rotor output shaft, 10-internal rotor, 11-outer rotor, 12-outer rotor output shaft, 13-driving wheel, 14-flower wheel, 15-second clutch, 16-second helper motor, wheel hub on the right side of 17-.
Detailed description of the invention
Below in conjunction with accompanying drawing and specific embodiment, the present invention is further illustrated, but protection scope of the present invention is not limited to this.
As shown in Figure 1, electric drive axle system of the present invention, comprises anti-direction dual-rotor motor 4, first gear drive 5, second gear drive 6, universal-joint 2, transmission shaft 3, first helper motor 8, second helper motor 16, first clutch 7, second clutch 15, controller, power supply storage equipment.Described first gear drive 5, second gear drive 6 includes the driving wheel 13 and flower wheel 14 that are meshed and is constant speed drive.Anti-direction dual-rotor motor 4 is made up of outer rotor 11 and internal rotor 10, and level of torque when anti-direction dual-rotor motor 4 works on its internal rotor output shaft 9 and outer rotor output shaft 12 is equal, and direction is contrary.The internal rotor output shaft 9 of described anti-direction dual-rotor motor 4 is connected with the driving wheel 13 of the first gear drive 5 and realizes transmission of power.Driving wheel 13 drives flower wheel 14 to rotate, and the flower wheel 14 of the first gear drive 5 is connected with left side wheel hub 1 by universal-joint 2, transmission shaft 3.The flower wheel 14 of described first gear drive 5 also and between the first helper motor 8 is provided with first clutch 7; First clutch 7 controls the transmission of power break-make between the first helper motor 8 and flower wheel 14.
The outer rotor output shaft 12 of described anti-direction dual-rotor motor 4 is connected with the driving wheel 13 of the second gear drive 6, realizes transmission of power, and driving wheel 13 drives flower wheel 14 to rotate.The driving wheel 13 of the second gear drive 6 is connected with right side wheel hub 17 by universal-joint 2, transmission shaft 3.Be provided with second clutch 15 between the flower wheel 14 of described second gear drive 6 and the second helper motor 16, control the transmission of power break-make between the second helper motor 16 and flower wheel 14.
Described controller is connected with first clutch 7, second clutch 15, anti-direction dual-rotor motor 4, first helper motor 8, second helper motor 16, comprise the clutch control module of mode of operation for controlling first clutch 7, second clutch 15, for controlling the helper motor control module of the first helper motor 8, second helper motor 16 in electrical generator, the conversion of electrical motor two kinds of mode of operations, and for anti-direction dual-rotor motor 4 control module of the mode of operation that controls anti-direction dual-rotor motor 4.Described power supply storage equipment is connected with the first helper motor 8, second helper motor 16 respectively.
Anti-direction dual-rotor motor 4 is major impetus output source, first helper motor 8, second helper motor 16, first clutch 7, second clutch 15 are in different mode of operations by controller according to vehicle working condition demand modeling, coordinate anti-direction dual-rotor motor 4 to meet the demand of car load to drive system.
Particularly:
The common drive pattern of electric drive axle: anti-direction dual-rotor motor 4 is according to vehicle needs Driving Torque, first clutch 7, second clutch 15 are in released state, first helper motor 8, second helper motor 16 does not work, i.e. unpowered transmission between helper motor and electric drive axle, the torque of internal rotor output shaft 9 output of anti-direction dual-rotor motor 4 inputs the driving wheel 13 of the first gear system, power, after flower wheel 14 changes torque direction, is exported by flower wheel 14 and passes to left side wheel hub through universal-joint 2, axle drive shaft, universal-joint 2.The torque that outer rotor output shaft 12 exports inputs the driving wheel 13 of the second gear system, and now flower wheel 14 is in idling conditions, and power thus driving wheel 13 exports wheel hub on the right side of universal-joint 2, axle drive shaft, universal-joint 2 pass to.
The auxiliary associating drive pattern of electric drive axle: when the maximum output torque of anti-direction dual-rotor motor 4 is less than the required torque of car load, needing the first helper motor 8, second helper motor 16 assistive drive, is car load drive system supply torque.First according to the rotating speed of current anti-direction dual-rotor motor 4, control the first helper motor 8, second helper motor 16 raises speed, when the first helper motor 8, the rotating speed of the second helper motor 16 and anti-direction dual-rotor motor 4 rotating speed close to time, the electromagnetic valve of controller drived control power-transfer clutch, make first clutch 7, second clutch 15 by released state to bonding state, first helper motor 8, second helper motor 16 realizes being connected with the power of drive system, needed for supply, improve the first helper motor 8, the Driving Torque of the second helper motor 16, under after power coupling, electric drive axle is in associating drive pattern.The torque of internal rotor output shaft 9 output of anti-direction dual-rotor motor 4 inputs the driving wheel 13 of the first gear system, the torque that first helper motor 8 exports passes to flower wheel 14 through first clutch 7, after forming torque superposition, spread out of by flower wheel 14, be delivered to left side wheel hub 1 through universal-joint 2, transmission shaft 3.The torque that outer rotor output shaft 12 exports inputs the driving wheel 13 of the second gear system, the torque that second helper motor 16 exports passes to flower wheel 14 through second clutch 15, also torque superposition is formed, exported by the second gear drive 6 driving wheel 13, be delivered to right side wheel hub 17 through universal-joint 2, transmission shaft 3.
The energy recuperation mode of electric drive axle: to slide or under braking mode when vehicle is in, portion of energy reclaimed in order to energy-conservation, electric drive axle of the present invention carries out recovery braking energy by the first helper motor 8, second helper motor 16.First according to the rotating speed of current anti-direction dual-rotor motor 4, control the first helper motor 8, second helper motor 16 to raise speed, when the first helper motor 8, second helper motor 16 rotating speed and anti-direction dual-rotor motor 4 rotating speed close to time, the electromagnetic valve of controller drived control power-transfer clutch, make first clutch 7, second clutch 15 by released state to bonding state, the first helper motor 8, second helper motor 16 realizes being connected with the power of drive system.The torque of left side wheel hub 1 is delivered to the first gear drive 5 flower wheel 14 through universal-joint 2, transmission shaft 3, then the first helper motor 8 is delivered to through first clutch 7, first helper motor 8 is generator mode, by electromagnetic induction principle, partial torque is converted into electrical power storage in apparatus for storing electrical energy; Simultaneously, the torque of right side wheel hub 17 is delivered to the driving wheel 13 of the second gear drive 6 through universal-joint 2, transmission shaft 3, the second helper motor 16 is delivered to through flower wheel 14, second clutch 15, second helper motor 16 is generator mode, by electromagnetic induction principle, partial torque is converted in apparatus for storing electrical energy, for car load provides lock torque, while reducing the speed of a motor vehicle, realize Brake energy recovery.
The Electronic differential control pattern of electric drive axle: during Vehicular turn, the demand torque of the wheel hub of left and right sides is different, the difference of interior outside torque-demand is determined by the difference at vehicle structure parameter and Vehicular turn angle, compared to the electric drive axle only having double-rotor machine as Power output, electric drive axle of the present invention can realize the torque difference change on a large scale.For vehicle left-hand rotation, left side demand torque is less than right side demand torque, anti-direction dual-rotor motor 4 is pressed general mode and is driven vehicle, simultaneously according to the rotating speed of current anti-direction dual-rotor motor 4, control the first helper motor 8, second helper motor 16 raises speed, when the first helper motor 8, second helper motor 16 rotating speed and anti-direction dual-rotor motor 4 rotating speed close to time, controller drived control first clutch 7, the electromagnetic valve of second clutch 15, make first clutch 7, second clutch 15 by released state to bonding state, first helper motor 8, second helper motor 16 realizes being connected with the power of drive system.The flower wheel 14 of the first gear drive 5 is connected with left side wheel hub 1 through universal-joint 2, transmission shaft 3.It is generator mode that left side wheel hub 1 needs the torque that reduces to be delivered to the first helper motor 8, first helper motor 8 through the flower wheel 14 of the first gear drive 5, first clutch 7, unnecessary torque is converted into electrical power storage in apparatus for storing electrical energy; Simultaneously, second helper motor 16 and anti-direction dual-rotor motor 4 combine driving, namely strengthen Driving Torque, and the torque of the output on right side is after the second gear mechanism coupling, exported by the driving wheel 13 of the second gear drive 6, be delivered to right side wheel hub 17 through universal-joint 2, transmission shaft 3.Realize left side torque thus to diminish, right side torque becomes large, meets differential speed of vehicle working condition requirement, realizes electronic differential function.
Described embodiment is preferred embodiment of the present invention; but the present invention is not limited to above-mentioned embodiment; when not deviating from flesh and blood of the present invention, any apparent improvement that those skilled in the art can make, replacement or modification all belong to protection scope of the present invention.
Claims (5)
1. an electric drive axle system, it is characterized in that, comprise anti-direction dual-rotor motor (4), the first gear drive (5), the second gear drive (6), universal-joint (2), transmission shaft (3), the first helper motor (8), the second helper motor (16), described first gear drive (5), the second gear drive (6) include the driving wheel (13) and flower wheel (14) that are meshed and are constant speed drive; The internal rotor output shaft (9) of described anti-direction dual-rotor motor (4) is connected with the driving wheel (13) of the first gear drive (5), the flower wheel (14) of the first gear drive (5) is connected with left side wheel hub (1) by universal-joint (2), transmission shaft (3), and the flower wheel (14) of described first gear drive (5) is also connected with the first helper motor (8); The outer rotor output shaft (12) of described anti-direction dual-rotor motor (4) is connected with the driving wheel (13) of the second gear drive (6), the driving wheel (13) of the second gear drive (6) is connected with right side wheel hub (17) by universal-joint (2), transmission shaft (3), and the flower wheel (14) of described second gear drive (6) is connected with the second helper motor (16).
2. electric drive axle system according to claim 1, it is characterized in that, between the flower wheel (14) of described first helper motor (8), the second helper motor (16) and the first gear drive (5), the flower wheel (14) of the second gear drive (6), be also respectively arranged with first clutch (7), second clutch (15).
3. electric drive axle system according to claim 2, it is characterized in that, described electric drive axle system also comprises controller, described controller is connected with first clutch (7), second clutch (15), for controlling the mode of operation of first clutch (7), second clutch (15).
4. electric drive axle system according to claim 3, it is characterized in that, described controller is also connected with anti-direction dual-rotor motor (4), the first helper motor (8), the second helper motor (16), and also comprise in described controller for controlling the first helper motor (8), the second helper motor (16) in the helper motor control module of electrical generator, the conversion of electrical motor two kinds of mode of operations, and for anti-direction dual-rotor motor (4) control module of the mode of operation that controls anti-direction dual-rotor motor (4).
5. electric drive axle system according to claim 3, is characterized in that, described electric drive axle system also comprises power supply storage equipment, and described power supply storage equipment is connected with the first helper motor (8), the second helper motor (16) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410679425.XA CN104442370A (en) | 2014-11-24 | 2014-11-24 | Electric drive axle system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410679425.XA CN104442370A (en) | 2014-11-24 | 2014-11-24 | Electric drive axle system |
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| CN104442370A true CN104442370A (en) | 2015-03-25 |
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| CN201410679425.XA Pending CN104442370A (en) | 2014-11-24 | 2014-11-24 | Electric drive axle system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105034789A (en) * | 2015-09-07 | 2015-11-11 | 安徽安凯汽车股份有限公司 | Dual-rotor electric drive axle |
| CN106864252A (en) * | 2017-04-17 | 2017-06-20 | 吉林大学 | One kind is turned to and drives integrated form wheel side power drive system and vehicle |
| CN107010105A (en) * | 2017-04-17 | 2017-08-04 | 吉林大学 | A kind of steering-by-wire and independent driving integrated form wheel side electric driver |
| CN109866589A (en) * | 2019-04-01 | 2019-06-11 | 山东理工大学 | A kind of pure electric drive axle and its control method based on anti-direction dual-rotor motor and hub motor |
| CN111030405A (en) * | 2019-12-30 | 2020-04-17 | 李佩 | Synchronous and asynchronous composite motor device |
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| CN109866589A (en) * | 2019-04-01 | 2019-06-11 | 山东理工大学 | A kind of pure electric drive axle and its control method based on anti-direction dual-rotor motor and hub motor |
| CN111030405A (en) * | 2019-12-30 | 2020-04-17 | 李佩 | Synchronous and asynchronous composite motor device |
| CN111030405B (en) * | 2019-12-30 | 2022-05-27 | 李佩 | Synchronous and asynchronous composite motor device |
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Application publication date: 20150325 |
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