CN105790500A - Integrated driving device for electric vehicle - Google Patents
Integrated driving device for electric vehicle Download PDFInfo
- Publication number
- CN105790500A CN105790500A CN201610256929.XA CN201610256929A CN105790500A CN 105790500 A CN105790500 A CN 105790500A CN 201610256929 A CN201610256929 A CN 201610256929A CN 105790500 A CN105790500 A CN 105790500A
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- Prior art keywords
- shaft
- gear
- motor
- differential mechanism
- spline
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
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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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention relates to an integrated driving device for an electric vehicle, which is composed of a driving motor, a speed reducer and a differential mechanism arranged inside the shell. The output end of a motor shaft is provided with a first shaft gear; a middle shaft is sequentially and fixedly sleeved with a first-stage speed reduction gear, a parking gear and a second shaft gear from right to left; the motor shaft and the middle shaft are arranged parallelly, the motor shaft is internally provided with a transmission shaft, one end of the transmission shaft is in spline connection with a first half-shaft gear, and the other end of the transmission shaft is in spline connection with a half shaft of the vehicle; the first shaft gear is engaged with the first-stage speed reduction gear, a second-stage speed reduction gear sleeves the casing of the differential mechanism, the casing of the differential mechanism is internally fixed with a planetary gear, the planetary gear is engaged with a first half-shaft gear and a second half-shaft gear, the second half-shaft gear is in spline connection with the half shaft of the vehicle, and the parking gear is connected with a parking mechanism outside the casing. The device has the advantages of compact structure, small radial dimension and high integration, and the arrangement flexibility of the driving system on the overall vehicle can be improved.
Description
Technical field
The invention belongs to the technical field of drive device for electric vehicle, be specifically related to the integrated drive device of a kind of electric automobile.
Background technology
Vehicle exhaust is considered as cause one of Global Emissions of Greenhouse Gas aggravation, various places haze takes place frequently and environmental problem highlights day by day arch-criminal, appearance along with the constantly Abgasgesetz of consumption and increasingly stringent of petroleum-based energy, new-energy automobile is little as one discharge, polluting few vehicles and obtained the extensive attention of each car load factory, development new-energy automobile has become the instant task of automobile industry.Except parts such as the electromotor of orthodox car, variator, decelerator, differential mechanisms, the power assembly of new-energy automobile also add the parts such as drive motor and control system, electrokinetic cell.Driving device in most electric motor cars adopts the independent assemblies such as drive motor, decelerator, differential mechanism to be connected by end face.There is problems of each independent assembly volume big, heavier-weight.
Big for driving device volume, the problems such as amount of parts is many, the integrated design of driving device becomes one of method of solution problem.Patent CN201792742U discloses the driving device that a kind of drive motor and change speed gear box are integrated, and electric machine casing and gear box casing adopt integrative-structure, and both can coaxially export can also the output of different axle, but be not carried out with box of tricks integrated.Patent CN103036353A discloses a kind of miniature speed governing deceleration integrated electric motor, it is achieved that drive motor and reducing gear integrated, and reducing gear is epicyclic reduction gear unit, but unrealized integrated with differential mechanism.Patent CN202716729U discloses a kind of Motor for Electric Automobile and change speed gear box integrated electric force driving device, motor rotor rack is hollow structure, differential mechanism is arranged in rotor field spider, the housing of differential mechanism is connected with the inner side of rotor field spider, planetary gear reducing mechanism is connected respectively in both sides, the planet carrier central shaft of two planetary gear reducing mechanisms is connected with homonymy vehicle semiaxle respectively, achieve drive motor, decelerator, differential mechanism integrated, but adopt two planetary gear reducing mechanisms, there is amount of parts many, axial dimension is longer, the problems such as assembly quality is big.
Summary of the invention
For the deficiency of above-mentioned prior art, it is an object of the invention to provide the integrated drive device of a kind of electric automobile, there is compact conformation, radial dimension is little and integrated level is high advantage, it is possible to increase the motility that drive system is arranged on car load.
The purpose of the present invention is achieved through the following technical solutions:
The integrated drive device of a kind of electric automobile, is made up of the drive motor being arranged in same housing 1, decelerator and differential mechanism, and described drive motor includes motor shaft 11, and on described motor shaft 11 outfan, fixed cover is equipped with the first shaft gear 15；Described decelerator include jackshaft 26, on described jackshaft 26, fixed cover is equipped with primary speed-down gear 29, parking gear the 28, second shaft gear 26a successively from right to left；Described motor shaft 11 and jackshaft 26 are arranged in parallel, and described motor shaft 11 is hollow axle, motor shaft 11 be internally provided with power transmission shaft 10, one end of power transmission shaft 10 is connected with the first axle shaft gear 24 spline, and power transmission shaft 10 other end is connected with the Formation of Axle Shaft Spline of vehicle；The first described shaft gear 15 engages with the primary speed-down gear 29 of decelerator, double-reduction gear 25 is nested with on differential mechanism shell 18, differential mechanism shell 18 is internal is fixed with planetary gear 20, planetary gear 20 engages with the first axle shaft gear 24 and the second axle shaft gear 23, second axle shaft gear 23 is connected with the Formation of Axle Shaft Spline of vehicle, and described parking gear 28 is connected with hull outside halting mechanism.
A modification of the present invention scheme, described drive motor is permagnetic synchronous motor.
A modification of the present invention scheme, described housing 1 is cast with cooling water channel, by the mode of water-cooled, motor stator 2 is cooled down.
A modification of the present invention scheme, described housing 1 is provided with cooling oil jacket 31, installs rubber seal 30 between cooling oil jacket 31 and housing 1, and cooling oil jacket 31 has nozzle opening, and the winding overhang of motor stator 2 is made directly cooling by nozzle opening by cooling oil.
A modification of the present invention scheme, described drive motor also includes rotor 3, rotary transformer 5, motor right bearing 6, motor shaft 11, motor left bearing 12, motor shaft oil sealing 13 and electric motor end cap 4, described motor shaft 11 one end supports on electric motor end cap 4 by motor right bearing 6, the other end is supported on housing 1 by motor left bearing 12, and rotary transformer 5 is arranged in the outer end of motor shaft 11 and is positioned at electric motor end cap 4 inner face.
A modification of the present invention scheme, the first described shaft gear 15 is supported on housing 1 by primary shaft bearing 14, and the first shaft gear 15 is connected by spline with motor shaft 11, and primary speed-down gear 29 is connected by spline with jackshaft 26；The second described shaft gear 26a is one-body molded on jackshaft 26, and the second shaft gear 26a is meshed with double-reduction gear 25；Double-reduction gear 25 is connected with differential mechanism shell 18 bolt.
Beneficial effects of the present invention is as follows:
Drive motor and differential mechanism are arranged in same axis by the integrated drive device of a kind of electric automobile provided by the invention, assembly radial dimension is little, compact conformation and the high advantage of integrated level to make it compared with prior art have, and improves the motility that car load dynamical system arranges and is greatly improved.The power that drive motor in the present invention produces directly inputs to decelerator by motor shaft, decreases power loss, improves transmission efficiency.The present invention is used for New-energy electric vehicle can realize controlling automobile by controlling the rotating speed of drive motor, it is to avoid the trouble that gearshift brings.
Accompanying drawing explanation
Fig. 1 is the sectional view of a kind of integrated driving device for electric vehicle water-cooled machine scheme of the present invention；
Fig. 2 is the sectional view of a kind of integrated driving device for electric vehicle oil-cooled motor scheme of the present invention；
Fig. 3 is the structural representation of the jackshaft of a kind of integrated driving device for electric vehicle of the present invention.
In figure: 1 housing 2 motor stator 3 rotor 4 electric motor end cap 5 rotary transformer 6 motor right bearing 7 transmission shaft bearing 8 power transmission shaft oil sealing 9 rear end cap 10 power transmission shaft 11 motor shaft 12 motor left bearing 13 motor shaft oil sealing 14 primary shaft bearing 15 first shaft gear 16 differential support lid 17 differential mechanism right bearing 18 differential mechanism shell 19 decelerator end cap 20 planetary gear 21 differential mechanism left bearing 22 output shaft oil sealing 23 second axle shaft gear 24 first axle shaft gear 25 double-reduction gear 26 jackshaft 27 midship shaft bearing 28 parking gear 29 primary speed-down gear 30 rubber seal 31 cools down oil jacket 26a the second shaft gear
Specific embodiments
Specific embodiments of the present invention are described in detail below in conjunction with accompanying drawing.
As shown in Figure 1, a kind of integrated drive device of electric automobile, by the drive motor being arranged in same housing 1, decelerator and differential mechanism composition, it is characterized in that: on motor shaft 11 outfan of described drive motor, fixed cover is equipped with the first shaft gear 15, on the jackshaft 26 of decelerator, fixed cover is equipped with primary speed-down gear 29 successively from right to left, parking gear 28, second shaft gear 26a, described motor shaft 11 is arranged in parallel with jackshaft 26, described motor shaft 11 is hollow axle, motor shaft 11 be internally provided with power transmission shaft 10, one end of power transmission shaft 10 is connected with the first axle shaft gear 24 spline, power transmission shaft 10 other end is connected with the Formation of Axle Shaft Spline of vehicle；The first described shaft gear 15 engages with the primary speed-down gear 29 of decelerator, double-reduction gear 25 is nested with on differential mechanism shell 18, differential mechanism shell 18 is internal is fixed with planetary gear 20, planetary gear 20 engages with the first axle shaft gear 24 and the second axle shaft gear 23, second axle shaft gear 23 is connected with the Formation of Axle Shaft Spline of vehicle, and described parking gear 28 is connected with hull outside halting mechanism.
Described drive motor is permagnetic synchronous motor, compared with other type motor, it may be achieved higher power density and higher efficiency.Described housing 1 is cast with cooling water channel, by the mode of water-cooled, motor stator 2 is cooled down.As in figure 2 it is shown, be provided with cooling oil jacket 31 on described housing 1, installing rubber seal 30 between cooling oil jacket 31 and housing 1, cooling oil jacket 31 has nozzle opening, the winding overhang of motor stator 2 is made directly cold by nozzle opening by cooling oil.
Described drive motor also includes rotor 3, rotary transformer 5, motor right bearing 6, motor shaft 11, motor left bearing 12, motor shaft oil sealing 13 and electric motor end cap 4, described motor shaft 11 one end supports on electric motor end cap 4 by motor right bearing 6, the other end is supported on housing 1 by motor left bearing 12, and rotary transformer 5 is arranged in the outer end of motor shaft 11 and is positioned at electric motor end cap 4 inner face.
The first described shaft gear 15 is supported on differential support lid and described housing 1 by primary shaft bearing 14, and the first shaft gear 15 is connected by spline with motor shaft 11, and primary speed-down gear 29 is connected by spline with jackshaft 26；As it is shown on figure 3, the second described shaft gear 26a is one-body molded on jackshaft 26, the second shaft gear 26a is meshed with double-reduction gear 25；Double-reduction gear 25 is connected with differential mechanism shell 18 bolt.
Described decelerator includes the first shaft gear 15, primary speed-down gear the 29, second shaft gear 26a, jackshaft 26, double-reduction gear 25, primary shaft bearing 14, midship shaft bearing 27 and decelerator end cap 19；Described differential mechanism includes differential mechanism shell the 18, first axle shaft gear the 24, second axle shaft gear 23, differential support lid 16, differential mechanism left bearing 21, differential mechanism right bearing 17 and output shaft oil sealing 22；Described decelerator end cap 19 and electric motor end cap 4 are fixedly connected on housing 1 two ends respectively through bolt.Described power transmission shaft 10 is connected with the first axle shaft gear 24 spline and is supported on rear end cap 9 by transmission shaft bearing 7, and rear end cap 9 is bolted to connection on electric motor end cap 4.
Described housing 1 inner chamber is divided into motor cavity and the decelerator chamber of drive motor, is sealed by motor shaft oil sealing 13 between motor cavity and decelerator chamber, it is ensured that the lubricating oil of decelerator does not enter in motor and electrical machine insulation is produced impact.Decelerator and differential mechanism are arranged on decelerator intracavity, and drive motor is mainly disposed in motor cavity, and the motor shaft 11 of drive motor stretches into decelerator chamber through motor cavity.Motor is dry type motor, housing 1 has the cooling water channel of casting, by the mode of water-cooled, motor stator 2 is cooled down, and the gear of decelerator and bearing carry out oil lubrication by the mode splashed.
Described motor stator 2 is made up of stator core and winding, stator core is overrided to form by non-oriented silicon steel sheet, stator winding is distributed winding, described rotor 3 is made up of rotor core, permanent magnet and dynamic balancing duplicate removal plate, rotor core is overrided to form by non-oriented silicon steel sheet, and permanent magnet is NdFeB material.
The motor shaft 11 of described drive motor is both as the output shaft of drive motor, again as the power shaft of decelerator, motor shaft 11 there is external splines, first shaft gear 15 has internal spline, and the two spline connects, and the first shaft gear 15 is meshed with primary speed-down gear 29, directly the power that motor shaft 11 exports is passed to decelerator, decreasing power loss, improve transmission efficiency, motor shaft 11 two ends support on housing 1 and electric motor end cap 4 respectively through motor left bearing 12 and motor right bearing 6.
Described drive motor is permagnetic synchronous motor, rotary transformer 5 is the position sensor of drive motor, motor can be controlled by car load according to the signal understood from rotary transformer 5, rotary transformer 5 is arranged in the outer end of motor shaft 11 and is positioned at electric motor end cap 4 inner face, and rear end cap 9 is bolted on electric motor end cap 4.
Described decelerator includes primary speed-down gear train and double-reduction gear group, the driving gear of primary speed-down gear train is the first shaft gear 15, driven gear is primary speed-down gear 29, first shaft gear 15 is connected by spline with motor shaft 11, and primary speed-down gear 29 is connected by spline with jackshaft 26；The driving gear of double-reduction gear group is the second shaft gear 26a, and the second shaft gear 26a and jackshaft 26 are integral type structure, and the driven gear of double-reduction gear group is double-reduction gear 25, and double-reduction gear 25 is meshed with the second shaft gear 26a.First shaft gear 15, primary speed-down gear the 29, second shaft gear 26a, double-reduction gear 25 are all helical gear, can meet requirement of strength during heavy load.Jackshaft 26 is supported on decelerator end cap 19 and housing 1 by midship shaft bearing 27.Being also equipped with parking gear 28 on jackshaft 26, the two spline connects, and outside halting mechanism pins jackshaft 26 by parking gear 28, thus realizing parking function.
Described double-reduction gear 25 is integrated with the differential mechanism shell 18 of differential mechanism, differential mechanism shell 18 and double-reduction gear 25 are bolted, differential mechanism also includes the first coaxial axle shaft gear 24 and the second axle shaft gear 23 being positioned at differential mechanism shell 18, second axle shaft gear 23 is connected with the Formation of Axle Shaft Spline of vehicle, first axle shaft gear 24 is connected with power transmission shaft 10 spline, power transmission shaft 10 is connected with the Formation of Axle Shaft Spline of vehicle again, forms the power output of whole device.The lubricating oil that driving device two ends ensure in device respectively through output shaft oil sealing 22, power transmission shaft oil sealing 8 is not revealed.
The power delivery mode of the present invention is as follows:
Winding energising in motor stator 2 in drive motor, convert electrical energy into mechanical energy drive motor rotor 3 by the electromagnetic field of electric machine rotor to rotate, power passes to differential mechanism shell 18 by the primary speed-down gear train being made up of the first shaft gear 15 and primary speed-down gear 29 and the double-reduction gear group being made up of the second shaft gear 26a and double-reduction gear 25, by the first axle shaft gear 24 and the second axle shaft gear 23 after differential mechanism, hub for vehicle wheel is imparted power to, thus driving vehicle to travel again through power transmission shaft.During reversing, motor reversal, make vehicle driving in reverse.
Above by detailed description of the invention, the present invention being described in detail, this embodiment is only the preferred embodiments of the present invention, should not be construed as limitation of the present invention, and the change that any foundation principles of the invention is done all should within protection scope of the present invention.
Claims (6)
1. the integrated drive device of an electric automobile, it is made up of the drive motor being arranged in same housing (1), decelerator and differential mechanism, it is characterized in that: described drive motor includes motor shaft (11), and on described motor shaft (11) outfan, fixed cover is equipped with the first shaft gear (15)；Described decelerator include jackshaft (26), on described jackshaft (26), fixed cover is equipped with primary speed-down gear (29), parking gear (28), the second shaft gear (26a) successively from right to left；Described motor shaft (11) and jackshaft (26) are arranged in parallel, described motor shaft (11) is hollow axle, motor shaft (11) be internally provided with power transmission shaft (10), one end of power transmission shaft (10) is connected with the first axle shaft gear (24) spline, and power transmission shaft (10) other end is connected with the Formation of Axle Shaft Spline of vehicle；Described the first shaft gear (15) engages with the primary speed-down gear (29) of decelerator, double-reduction gear (25) is nested with on differential mechanism shell (18), differential mechanism shell (18) is internal is fixed with planetary gear (20), planetary gear (20) engages with the first axle shaft gear (24) and the second axle shaft gear (23), second axle shaft gear (23) is connected with the Formation of Axle Shaft Spline of vehicle, and described parking gear (28) is connected with hull outside halting mechanism.
2. the integrated drive device of electric automobile as claimed in claim 1, it is characterised in that: described drive motor is permagnetic synchronous motor.
3. the integrated drive device of electric automobile as claimed in claim 1, it is characterised in that: described housing (1) is provided with cooling water channel.
4. the integrated drive device of electric automobile as claimed in claim 1, it is characterized in that: described housing (1) is provided with cooling oil jacket (31), rubber seal (30) is installed between cooling oil jacket (31) and housing (1), having nozzle opening in cooling oil jacket (31), the winding overhang of motor stator (2) is made directly cooling by nozzle opening by cooling oil.
5. the integrated drive device of electric automobile as claimed in claim 1, it is characterized in that: described drive motor also includes rotor (3), rotary transformer (5), motor right bearing (6), motor shaft (11), motor left bearing (12), motor shaft oil sealing (13) and electric motor end cap (4), described motor shaft (11) one end supports on electric motor end cap (4) by motor right bearing (6), the other end is supported on housing (1) by motor left bearing (12), rotary transformer (5) is arranged in the outer end of motor shaft (11) and is positioned at electric motor end cap (4) inner face.
6. the integrated drive device of electric automobile as claimed in claim 1, it is characterized in that: described the first shaft gear (15) is supported on housing (1) by primary shaft bearing (14), first shaft gear (15) is connected by spline with motor shaft (11), and primary speed-down gear (29) is connected by spline with jackshaft (26)；Described the second shaft gear (26a) is one-body molded on jackshaft (26), and the second shaft gear (26a) is meshed with double-reduction gear (25)；Double-reduction gear (25) is connected with differential mechanism shell (18) bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610256929.XA CN105790500A (en) | 2016-04-23 | 2016-04-23 | Integrated driving device for electric vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610256929.XA CN105790500A (en) | 2016-04-23 | 2016-04-23 | Integrated driving device for electric vehicle |
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| CN105790500A true CN105790500A (en) | 2016-07-20 |
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| CN201610256929.XA Pending CN105790500A (en) | 2016-04-23 | 2016-04-23 | Integrated driving device for electric vehicle |
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| CN106143132A (en) * | 2016-09-23 | 2016-11-23 | 辽宁曙光汽车集团股份有限公司 | Strongly support type electric drive decelerator |
| CN106505793A (en) * | 2016-12-16 | 2017-03-15 | 深圳市大地和电气股份有限公司 | A kind of driving motor of electric vehicle and its assembling structure |
| CN106808989A (en) * | 2017-03-03 | 2017-06-09 | 中国第汽车股份有限公司 | A kind of pure electric vehicle double-motor driving device |
| CN106828087A (en) * | 2017-01-13 | 2017-06-13 | 苏州绿控传动科技有限公司 | A kind of electric drive axle slowed down after single motor output |
| CN107128171A (en) * | 2017-05-24 | 2017-09-05 | 谷林波 | A kind of new-energy automobile power assembly |
| CN108631459A (en) * | 2018-03-29 | 2018-10-09 | 北京航空航天大学 | A kind of high-power highly reliable six-phase permanent magnet fault-tolerant wheel hub motor of Electric Armoured Vehicle |
| CN108768067A (en) * | 2018-07-20 | 2018-11-06 | 浙江绿源电动车有限公司 | decelerating motor |
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| CN109421524A (en) * | 2017-08-31 | 2019-03-05 | 东风德纳车桥有限公司 | A kind of electric axle assembly |
| CN109421433A (en) * | 2017-08-31 | 2019-03-05 | 东风德纳车桥有限公司 | A kind of coaxial electric vehicle axle assembly |
| CN109455074A (en) * | 2018-12-11 | 2019-03-12 | 北京宏瑞汽车科技股份有限公司 | A kind of integrated electric drive system |
| CN109677252A (en) * | 2019-02-26 | 2019-04-26 | 重庆青山工业有限责任公司 | A kind of highly integrated high-performance pure electric automobile power assembly |
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| CN110149019A (en) * | 2018-02-12 | 2019-08-20 | 比亚迪股份有限公司 | Electronic assembly and vehicle with it |
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