CN106808989A - A kind of pure electric vehicle double-motor driving device - Google Patents
A kind of pure electric vehicle double-motor driving device Download PDFInfo
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- CN106808989A CN106808989A CN201710123308.9A CN201710123308A CN106808989A CN 106808989 A CN106808989 A CN 106808989A CN 201710123308 A CN201710123308 A CN 201710123308A CN 106808989 A CN106808989 A CN 106808989A
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- motor
- gear
- deceleration
- shaft
- jackshaft
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- 230000007246 mechanism Effects 0.000 claims abstract description 26
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- 238000007789 sealing Methods 0.000 claims description 14
- 230000005611 electricity Effects 0.000 claims description 9
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 2
- 230000006698 induction Effects 0.000 claims description 2
- 230000009466 transformation Effects 0.000 claims 1
- 230000001133 acceleration Effects 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 230000010354 integration Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 12
- 238000004804 winding Methods 0.000 description 5
- 239000010687 lubricating oil Substances 0.000 description 3
- 229910000976 Electrical steel Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 230000005672 electromagnetic field Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 230000033001 locomotion Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910001172 neodymium magnet Inorganic materials 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
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- 238000007493 shaping process Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K1/02—Arrangement or mounting of electrical propulsion units comprising more than one electric motor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
- B60K17/06—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing
- B60K17/08—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing of mechanical type
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention discloses a kind of pure electric vehicle double-motor driving device, the first motor, the second motor, decelerator, differential mechanism are become one by Integration Design, common housing, and motor shaft is not only as the output shaft of motor but also as the input shaft of decelerator, amount of parts is effectively reduced, assembly weight is reduced.The power that first motor of the drive device and the second motor are produced is directly inputted to decelerator by the first motor shaft and the second motor shaft, reduces power loss, improves transmission efficiency.The drive device includes two motors, can be according to the demand of user, driving or a motor are operated alone the bi-motor that carries out of selectivity jointly, the starting acceleration performance and high speed performance of pure electric automobile are taken into account simultaneously, and ensure that motor is in operating mode rate of load condensate higher, improve the efficiency of drive device.
Description
Technical field
The invention belongs to the technical field of pure electric vehicle drive device, more particularly to one kind makes on pure electric vehicle
Double-motor driving device.
Background technology
At present, Global Emissions of Greenhouse Gas aggravation, various regions haze is taken place frequently, and environmental problem is increasingly highlighted, and vehicle exhaust is recognized
To be one of the arch-criminal for causing above mentioned problem, with the continuous consumption and the appearance of increasingly strict Abgasgesetz of petroleum-based energy,
New-energy automobile is small as one kind discharge, pollutes the extensive attention that few vehicles have obtained each vehicle factory, develops new energy
Automobile has turned into the very urgent task of automobile industry.
Pure electric automobile fully relies on battery and powers to drive vehicle to motor, and its energy comes from power network, realizes
Zero oil consumption, zero-emission, can effectively reduce the average fuel consumption of vehicle enterprise, therefore, commercially pure electric automobile into
It is one of most fast vehicle of speedup.But the drive device on current most of pure electric automobiles uses a motor
With a combination for the decelerator of fixed speed ratio, due to motor fan-out capability limitation and transforming gear can not be carried out,
It is difficult to take into account vehicle climbing and acceleration and the requirement of vehicle max. speed, causes the dynamic property and highest of part pure electric automobile
Speed gap compared with orthodox car is obvious.Chinese patent CN101386258A provides a kind of pure motorized motions system of bi-motor
System, which employs the part used in the traditional vehicles such as gearbox and clutch, gearbox is less efficient compared with decelerator, and from
Clutch also has friction loss very high.
The content of the invention
For the deficiency of above-mentioned prior art, it is an object of the invention to provide a kind of compact conformation, integrated level is high, energy
It is enough to take into account the starting acceleration performance of pure electric automobile and the pure electric vehicle double-motor driving device of high speed performance simultaneously.
The technical solution adopted by the present invention is：
Embodiments of the invention provide a kind of pure electric vehicle double-motor driving device, including driving chamber and are placed in institute
The first motor in driving chamber, the second motor, decelerator and differential mechanism are stated, the driving chamber is by the first electric machine casing
First electric motor end cap and the second electric machine casing of first electric machine casing one end and the second electric machine casing one is fixed on being fixed on
Second electric motor end cap at end is collectively forming, the other end phase of the other end of first electric machine casing and second electric machine casing
Connect, the driving chamber is divided into the first motor chamber, decelerator chamber and the second motor chamber；First motor
The first motor shaft stretch into the decelerator chamber through the first motor chamber, the two ends of first motor shaft are supported on respectively
On first electric machine casing and first electric motor end cap；Second motor shaft of second motor passes through described second
The decelerator chamber is stretched into motor chamber, and the two ends of second motor shaft are supported on second electric machine casing and institute respectively
State on the second electric motor end cap；The decelerator and the differential mechanism are arranged in the decelerator chamber, and the decelerator includes the
One train of reduction gears, the second train of reduction gears and final gear group, the differential mechanism include differential carrier and are arranged on described
Planetary gear, left half axle gear and right axle shaft gear in differential carrier, wherein, first train of reduction gears includes mutually nibbling
The first deceleration driving gear and the first deceleration driven gear for closing, first deceleration driving gear are same with first motor shaft
Axle is set simultaneously to be driven by first motor shaft and rotates, and the first deceleration driven gear is connected on a jackshaft, it is described in
The two supports of countershaft are on first electric machine casing and second electric machine casing；Second train of reduction gears includes phase
The second deceleration driving gear and the second deceleration driven gear for mutually engaging, second deceleration driving gear and second motor
Axle is coaxially disposed and is driven by second motor shaft and rotates, and the second deceleration driven gear is connected on the jackshaft；
The final gear group includes intermeshing main deceleration driving gear and main deceleration driven gear, the main deceleration driving gear
It is coaxially disposed with the jackshaft and is driven by the jackshaft and rotated, the main deceleration driven gear is fixedly connected on the difference
On fast device shell；The left half axle gear is connected with the Formation of Axle Shaft Spline of vehicle, to drive the wheel of the side of vehicle, the right axle shaft
Gear is connected with the external splines on output shaft, and the output shaft is passed through and by the output shaft from first motor shaft
Internal spline is connected with the Formation of Axle Shaft Spline of the vehicle, to drive the wheel of the opposite side of vehicle；The first deceleration driven gear
Optionally engaged and disconnected with the jackshaft with the second deceleration driven gear, first electricity
Arbor, the jackshaft and second motor shaft are set parallel to each other.
Alternatively, first deceleration driving gear is integrally formed with first motor shaft, and described second slows down actively
Gear is integrally formed with second motor shaft, and the main deceleration driving gear is integrally formed with the jackshaft.
Alternatively, the first deceleration driven gear is supported on the jackshaft by needle bearing, and described second subtracts
Fast driven gear is by spline connection on the jackshaft.
Alternatively, the first deceleration driven gear by spline connection on the jackshaft, the second deceleration quilt
Moving gear is supported on the jackshaft by needle bearing.
Alternatively, be provided with parking gear and synchronizer on the jackshaft, the parking gear by spline with it is described
Jackshaft is connected and is connected with outside halting mechanism, and the tooth set of the synchronizer is connected by spline with the jackshaft, described
Synchronizer is arranged on left side and and the exterior operator of the first deceleration driven gear or the second deceleration driven gear
Connection, it is described it is outside perform structure come by stirring the clutch collar on the synchronizer reality the first deceleration driven gear or
The engagement of the second deceleration driven gear and the jackshaft with disconnect.
Alternatively, first motor also includes being placed in the first motor stator on first motor shaft and the
One rotor, the first motor rotary transformer, the first motor rotary transformer are arranged in the outer of first motor shaft
At the position of end and the inner face positioned at the first electric motor end cap；Second motor also includes being placed in second motor
The second motor stator and the second rotor, the second motor rotary transformer on axle, the second motor rotary transformer cloth
Put at the position of inner face in the outer end of second motor shaft and positioned at the second electric motor end cap.
Alternatively, the output shaft is supported on the rear end cap of the first electric motor end cap connection, in second motor
Half sealing sealed to the semiaxis of the vehicle is provided with housing, is provided with to enter output shaft on end cap in the rear
The output sealing of row sealing.
Alternatively, first deceleration driving gear, the first deceleration driven gear, the second deceleration driving tooth
Wheel, the second deceleration driven gear, the main deceleration driving gear and the main deceleration driven gear are all helical gear.
Alternatively, between first electric machine casing and first electric motor end cap, second electric machine casing and described
It is bolted between second electric motor end cap and between first electric machine casing and second electric machine casing, the master
Deceleration driven gear is fixed together with the differential carrier by riveting, welding or bolt connection.
Alternatively, first motor and second motor are permagnetic synchronous motor or alternating current asynchronous electricity
Machine.
Alternatively, it is fixed to first motor to be respectively formed with first electric machine casing and second electric machine casing
The cooling pipe that sub and described second motor stator is cooled down.
Compared with prior art, pure electric vehicle of the invention double-motor driving device at least has advantages below：This hair
Bright pure electric vehicle double-motor driving device collects the first motor, the second motor, decelerator, differential mechanism integration
Into, amount of parts is effectively reduced, reduce assembly weight.Due to comprising two motors, can be according to user's
Demand takes into account the acceleration and efficiency of pure electric automobile simultaneously.When vehicle promptly accelerates or is travelled on larger slope road, two
Motor simultaneously work, meet dynamic property demand, when vehicle is at the uniform velocity travelled, a motor works independently, now motor be in compared with
Operating mode rate of load condensate high, electric efficiency is higher, reduces the consumption of battery electric quantity, improves vehicle continual mileage.
Brief description of the drawings
Fig. 1 is a kind of sectional view of pure electric vehicle double-motor driving device of the invention.
Fig. 2 is a kind of outline drawing of the first motor shaft of pure electric vehicle double-motor driving device of the invention.
Fig. 3 is a kind of outline drawing of the second motor shaft of pure electric vehicle double-motor driving device of the invention.
Fig. 4 is a kind of outline drawing of the output shaft of pure electric vehicle double-motor driving device of the invention.
(description of reference numerals)
1- jackshafts, 2- synchronizers, 3- the first deceleration driven gears, 4- needle bearings, 5- jackshaft right bearings, 6- first
Electric machine casing, the motor stators of 7- first, the rotors of 8- first, the electric motor end caps of 9- first, 10- the first motor rotary transformers,
11- the first motor left bearings, 12- output shaft bearings, 13- output shaft oil sealings, 14- rear end caps, 15- output shafts, 15a- output shafts
External splines, the internal spline of 15b- output shafts, the motor shafts of 16- first, 16a- first gears portion, 17- the first motor right bearings,
18- the first motor shaft oil sealings, 19- differential mechanism right bearings, 20- differential carriers, the main deceleration driven gears of 21-, 22- axle shaft gears,
23- differential mechanism left bearings, 24- axle-shaft oil seals, 25- parking gears, 26- the second deceleration driven gears, 27- jackshaft left bearings,
28- the second motor shaft oil sealings, 29- the second motor right bearings, the motor stators of 30- second, the rotors of 31- second, the electricity of 32- second
Machine left bearing, the motor shafts of 33- second, 33a- second gears portion, 34- the second motor rotary transformers, the electric motor end caps of 35- second,
The electric machine casings of 36- second, the main deceleration driving gears of 37-.
Specific embodiment
To make the technical problem to be solved in the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and tool
Body embodiment is described in detail.
Fig. 1 is a kind of sectional view of pure electric vehicle double-motor driving device of the invention.Fig. 2 is one kind of the invention
The outline drawing of the first motor shaft of pure electric vehicle double-motor driving device.Fig. 3 is that a kind of pure electric vehicle of the invention is used
The outline drawing of the second motor shaft of double-motor driving device.Fig. 4 is that a kind of pure electric vehicle of the invention is filled with Dual-motors Driving
The outline drawing of the output shaft put.Hereinafter, pure electric vehicle of the invention is carried out with double-motor driving device referring to figs. 1 to Fig. 4
Introduce.
Pure electric vehicle double-motor driving device provided in an embodiment of the present invention includes driving chamber and is placed in the drive
The first motor, the second motor, decelerator and differential mechanism in dynamic chamber, by the first motor, the second motor,
Decelerator and differential mechanism composition dynamic transfer system.As shown in figure 1, the driving chamber is by the first electric machine casing 6 and is fixed on the
First electric motor end cap 9 of one electric machine casing one end and the second electric machine casing 36 and it is fixed on the second of second electric machine casing one end
Electric motor end cap 35 is collectively forming, and the other end of the other end of first electric machine casing 6 and second electric machine casing 36 is mutual
Connection.Between first electric machine casing and first electric motor end cap, second electric machine casing and second motor side
Can be bolted between lid and between first electric machine casing and second electric machine casing.Including the driving chamber
Portion can be divided into the first motor chamber, decelerator chamber and the second motor chamber, and the first motor chamber is used to disposing the
One motor associated components, the second motor chamber is used to dispose the second motor associated components, and decelerator chamber is used to pacify
Decelerator and differential mechanism are put, decelerator is arranged in differential mechanism top and near the second motor chamber, and differential mechanism drives near first
Dynamic motor cavity, so, the first electric machine casing 6 can be used as the first motor and the shared housing of decelerator, the second electric machine casing
36 housings that can be shared as the second motor, decelerator and differential mechanism.Lead between first motor chamber and decelerator chamber
Cross the first motor shaft oil sealing 18 to be sealed, entered by the second motor shaft oil sealing 28 between the second motor chamber and decelerator chamber
Row sealing, it is ensured that the lubricating oil of decelerator does not enter in the first motor and the second motor to the exhausted of two motors
Edge produces influence.Decelerator chamber carries out oil lubrication built with lubricating oil, the gear and bearing of decelerator by way of splashing.
Specifically, the first motor shaft 16 of the first motor stretches into the decelerator chamber through the first motor chamber,
One end of first motor shaft 16 is supported on the first electric machine casing 6 by the first motor left bearing 17, and the other end is by the
One motor right bearing 11 is supported on the first electric motor end cap 9, and the first motor also includes being placed on first motor shaft 6
The first motor stator 7 and the first rotor 8, the first motor rotary transformer 10, the cloth of the first motor rotary transformer 8
Put at the position of inner face in the outer end of first motor shaft 6 and positioned at the first electric motor end cap 9.Second motor
The second motor shaft 33 stretch into the decelerator chamber through the second motor chamber, described one end of second motor shaft 33 passes through
Second motor left bearing 32 is supported on the second electric motor end cap 35, and the second motor may include to be placed in second motor shaft
The second motor stator 30 and the second rotor 31 on 33, the second motor rotary transformer 34, the second motor rotation become
Depressor 34 is arranged at the position of the outer end of second motor shaft 33 and the inner face positioned at the second electric motor end cap 35.Described
One motor stator 7 and the second motor stator 30 are constituted by stator core and winding, and stator core is laminated by non-oriented silicon steel sheet
Form, stator winding is distributed winding, and the rotor 31 of first rotor 8 and second is by rotor core, permanent magnetism
Body is constituted with dynamic balancing duplicate removal plate, and rotor core is overrided to form by non-oriented silicon steel sheet, and permanent magnet material is neodymium iron boron, dynamic balancing
Duplicate removal plate material is stainless steel.First motor and the second motor can all be dry type motor, for example, can be permanent-magnet synchronous
Motor or AC induction motor.In the case where the first motor and the second motor are dry type motor, in the first motor
There is the cooling water channel of casting on the electric machine casing 36 of housing 6 and second, so that can be by way of water-cooled to the first motor
The motor stator 30 of stator 7 and second is cooled down, and cooling water channel can be to be formed in the first electric machine casing 6 and the second electric machine casing 36
On spirality channel.First motor rotary transformer 10 is the position sensor of the first motor, and the rotation of the second motor becomes
Depressor 34 is the position sensor of the second motor, and vehicle can drive according to the signal understood from two position sensors to two
Dynamic motor is controlled.
With continued reference to Fig. 1, decelerator may include the first train of reduction gears, the second train of reduction gears and final gear group,
The differential mechanism includes differential carrier 20 and the planetary gear and two coaxial half axle gears that are arranged in the differential carrier 20
Wheel 22.The structure and layout of each part (differential carrier, planetary gear and axle shaft gear etc.) of the differential mechanism in the present invention with it is existing
There is technology to be similar to, avoid being described in detail them herein.
Wherein, first train of reduction gears includes intermeshing first deceleration driving gear and the first deceleration passive tooth
Wheel 3, first deceleration driving gear is coaxially disposed with first motor shaft 16 and is driven by first motor shaft 16 and turns
Dynamic, the first deceleration driven gear 3 is connected between on axle 1, and the two supports of the jackshaft 1 are in first motor casing
On body 6 and second electric machine casing 36, specifically, one end of jackshaft 1 supports to the second electricity by jackshaft left bearing 27
On casing body 36, the other end is supported on the first electric machine casing 6 by jackshaft right bearing 5.In one example, for so that structure
Characteristics of compact layout and parts are reduced, the first deceleration driving gear can be and the integrally formed first gear portion of the first motor shaft 16
16a, is specifically molded over the first motor shaft 16 and stretches on the end in decelerator chamber, as shown in Fig. 2 so, the first motor shaft 16
Both as the output shaft of the first motor, and as the input shaft of the first decelerator group, by with its integrally formed first
Gear part 16a is meshed with the first reduction gearing 3, the power that the first motor shaft 16 is exported directly can be passed into decelerator, subtracts
Lack power loss, improve transmission efficiency；But the invention is not limited in this, the first deceleration driving gear also can not be with
One motor shaft 16 is integrally formed, but is fixed on the first motor shaft 16 by modes such as splines.Second train of reduction gears
May include intermeshing second deceleration driving gear and the second deceleration driven gear 26, second deceleration driving gear and institute
State the second motor shaft 33 to be coaxially disposed and drive rotation by second motor shaft 33, the second deceleration driven gear 26 is connected
On the jackshaft 1.In one example, to cause structure characteristics of compact layout and reducing parts, the second deceleration driving gear can
Be with the integrally formed second gear portion 33a of the second motor shaft 33, be specifically molded over during the second motor shaft 33 stretches into decelerator chamber
End on, as shown in figure 3, still the invention is not limited in this, the second deceleration driving gear also can not be with the second motor shaft
33 are integrally formed, but are fixed on the second motor shaft 33 by modes such as splines.So, the second motor shaft 33 is both as second
The output shaft of motor, and as the input shaft of the second decelerator group, by with its integrally formed second gear portion 33a with
Second reduction gearing 26 is meshed, and the power that the second motor shaft 33 is exported directly can be passed into decelerator, reduces power damage
Lose, improve transmission efficiency.One in the first deceleration driven gear 3 and the second deceleration driven gear 26 in the present invention is optional
Engaged and disconnected with the jackshaft 1 to selecting property.In one example, the first deceleration driven gear 3 passes through needle roller axle
4 are held to be supported on the jackshaft 1, the second deceleration driven gear 26 by spline connection on the jackshaft 1, it is described
First deceleration driven gear 3 realizes the engagement and disconnection with jackshaft 1 by synchronizer described later.In another example, institute
Stating the first deceleration driven gear 3 can be by spline connection on the jackshaft 1, and the second deceleration driven gear 26 passes through
Needle bearing 4 is supported on the jackshaft, and the second deceleration driven gear 26 is realized with by synchronizer described later
The engagement and disconnection of countershaft 1.That is, in optionally making the first motor of the invention and the second motor
One or two to provide power for vehicle.
The final gear group includes intermeshing main deceleration driving gear 37 and main deceleration driven gear 21, the master
Deceleration driving gear 37 is coaxially disposed with the jackshaft 1 and drives rotation, the main deceleration driven gear by the jackshaft 1
21 are fixedly connected on the differential carrier 20, for example, differential carrier can be fixed to by riveting, welding or bolt connection
20.In one example, to cause structure characteristics of compact layout and reducing parts, main deceleration driving gear 37 can be with the one of jackshaft 1
Shaping, but the invention is not limited in this, main deceleration driving gear 37 can not also be integrally formed with jackshaft 1, but pass through
The modes such as spline are fixed on jackshaft 1.First gear portion 16a, second gear portion 33a, the first deceleration driven gear 3, second
Deceleration driven gear 26, main deceleration driving gear 37, main deceleration driven gear 21 can all be helical gear, so as to heavy load can be met
When intensity requirement.In the present invention, first motor shaft 16, the jackshaft 1 and second motor shaft 33 are parallel to each other
Set, so enable to the compact conformation and integrated level of pure electric vehicle double-motor driving device of the invention high.
Differential assembly is supported on the second electric machine casing 36 by differential mechanism left bearing 23 and differential mechanism right bearing 19.Difference
The axle shaft gear in the left side of fast device is connected with the Formation of Axle Shaft Spline of vehicle, drives the wheel of side, the internal spline of right axle gear
Be connected with the external splines 15a of output shaft 15, output shaft 15 from the first motor shaft 16 through again by internal spline 15b thereon with
The Formation of Axle Shaft Spline connection of vehicle, drives the wheel of opposite side, such first motor and differential mechanism be it is coaxially arranged, and second
Motor is parallel shaft arrangement with differential mechanism.As shown in figure 4, external splines 15a and internal spline 15b are respectively formed at output shaft 15
Two ends.Output shaft 15 is supported on rear end cap 14 by output shaft bearing 12, and rear end cap 14 can pass through with the first electric motor end cap 9
Bolt connection.Axle-shaft oil seal 24 is installed on the second electric machine casing, and output shaft oil sealing 13 is installed on rear end cap 14, drive device
Two output ends sealed by axle-shaft oil seal 24 and output shaft oil sealing 13 respectively so that the lubricating oil in ensureing device is not
Leakage.
Additionally, being provided with parking gear 25 on jackshaft 1, the two is arranged on institute by spline connection, parking gear 25
State between the second deceleration driven gear 26 and the main deceleration driving gear 37 and be connected with outside halting mechanism (not shown), outward
Portion's halting mechanism pins jackshaft 1 by parking gear 25, so as to realize parking function；Synchronizer is also equipped with jackshaft 1
2, tooth set and the spline connection of jackshaft 1 of synchronizer 2, synchronizer 2 may be provided at the first deceleration driven gear 3 or second and slows down
The left side of driven gear 26 is simultaneously connected (not shown) with outside execution structure, and exterior operator stirs synchronizer 2 by shift fork
On clutch collar, realize the engagement of the reduction gearing 3 of synchronizer 2 and first or the second deceleration driven gear 26 and disconnect, i.e., in fact
The engagement and disconnection of existing first reduction gearing 3 or the second deceleration driven gear 26 and jackshaft 1, so as to realize the first driving electricity
The engagement of power and output end that machine or the second motor are produced and disconnection.
It should be noted that being fixedly connected between middle gear of the present invention and axle employs spline connection mode, but simultaneously
It is not limited to this, it would however also be possible to employ the mode of interference combination.Additionally, bearing used in the present invention can be used is applied to high turning
Speed even extremely high-revolving operation, and extremely durable deep groove ball bearing.
The power delivery mode of pure electric vehicle double-motor driving device of the invention is as follows：
Winding in first motor stator 7 is powered, and is converted electrical energy into by the electromagnetic field of the rotor of the first motor
The first rotor 8 is rotated into mechanical energy, power passes through the first train of reduction gears (first gear portion on the first motor shaft 16
16a, the first reduction gearing 3) and final gear group (jackshaft 1, main deceleration driven gear 21) pass to differential carrier 20, pass through
Hub for vehicle wheel is passed to after differential assembly differential, so as to drive vehicle to travel.
Winding in second motor stator 30 is powered, and is converted electrical energy into by the electromagnetic field of the second motor rotor
Mechanical energy rotates the second rotor 31, and power passes through the second train of reduction gears (second gear portion on the second motor shaft 33
33a, the second reduction gearing 26) and final gear group (jackshaft 1, main deceleration driven gear 21) pass to differential carrier 20,
Hub for vehicle wheel is passed to after differential assembly differential, so as to drive vehicle to travel.
In vehicle travel process, the specific works pattern of pure electric vehicle double-motor driving device of the invention is as follows：
(1) when vehicle is at the uniform velocity travelled or running resistance is little, synchronizer 2 disconnects with the first reduction gearing 3, and first drives
Motor does not work, and vehicle is operated alone by the second motor, the second motor can be made to be in efficiency area higher and worked, and subtracts
The consumption of few battery electric quantity.
(2) when vehicle promptly accelerates or vehicle is travelled on the slope road of great slope, the first motor is started working
Drive the first reduction gearing 3 to rotate, when the first reduction gearing 3 and the speed discrepancy of synchronizer 2 meet to be required, driven by shift fork
Synchronizer 2 is engaged with the first reduction gearing 3, and the first motor participates in power output, it is ensured that the dynamic property of vehicle.
(3) when vehicle deceleration is travelled or braked, synchronizer 2 disconnects with the first reduction gearing 3, the first motor
Do not work, the second motor generates electricity, and now the second motor is in efficiency area higher, can make more braking energies
Change into battery electric quantity.
(4) when vehicle backing is travelled, synchronizer 2 disconnects with the first reduction gearing 3, and the first motor is stopped,
Second motor is inverted, and makes vehicle travel backwards.
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, on the premise of principle of the present invention is not departed from, some improvements and modifications can also be made, these improvements and modifications
Should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of pure electric vehicle double-motor driving device, it is characterised in that including driving chamber and be placed in the driving chamber
In the first motor, the second motor, decelerator and differential mechanism, the driving chamber is by the first electric machine casing and is fixed on
First electric motor end cap and the second electric machine casing of first electric machine casing one end and it is fixed on the second of second electric machine casing one end
Electric motor end cap is collectively forming, and the other end of the other end of first electric machine casing and second electric machine casing is connected with each other,
The driving chamber is divided into the first motor chamber, decelerator chamber and the second motor chamber；
First motor shaft of first motor stretches into the decelerator chamber, first electricity through the first motor chamber
The two ends of arbor are supported on first electric machine casing and first electric motor end cap respectively；The of second motor
Two motor shafts stretch into the decelerator chamber through the second motor chamber, and the two ends of second motor shaft are supported on respectively
On second electric machine casing and second electric motor end cap；The decelerator and the differential mechanism are arranged in the decelerator chamber
Interior, the decelerator includes the first train of reduction gears, the second train of reduction gears and final gear group, and it is poor that the differential mechanism includes
Fast device shell and the planetary gear, left half axle gear and the right axle shaft gear that are arranged in the differential carrier,
Wherein, first train of reduction gears includes intermeshing first deceleration driving gear and the first deceleration driven gear,
First deceleration driving gear is coaxially disposed with first motor shaft and is driven by first motor shaft and rotates, and described the
One deceleration driven gear is connected on a jackshaft, and the two supports of the jackshaft are in first electric machine casing and described
On two electric machine casings；Second train of reduction gears includes intermeshing second deceleration driving gear and the second deceleration passive tooth
Wheel, second deceleration driving gear is coaxially disposed with second motor shaft and is driven by second motor shaft and rotates, institute
The second deceleration driven gear is stated to be connected on the jackshaft；The final gear group includes the main deceleration driving tooth of intermeshing
Wheel and main deceleration driven gear, the main deceleration driving gear are coaxially disposed with the jackshaft and are driven by the jackshaft and turns
Dynamic, the main deceleration driven gear is fixedly connected on the differential carrier；The Formation of Axle Shaft Spline of the left half axle gear and vehicle
Connection, to drive the wheel of the side of vehicle, the right axle shaft gear to be connected with the external splines on output shaft, the output shaft from
First motor shaft is passed through and is connected with the Formation of Axle Shaft Spline of the vehicle by the internal spline on the output shaft, to drive car
Opposite side wheel；
One in the first deceleration driven gear and the second deceleration driven gear optionally with the jackshaft
Engaged and disconnected, first motor shaft, the jackshaft and second motor shaft are set parallel to each other.
2. pure electric vehicle double-motor driving device according to claim 1, it is characterised in that described first slows down master
Moving gear is integrally formed with first motor shaft, and second deceleration driving gear is integrally formed with second motor shaft,
The main deceleration driving gear is integrally formed with the jackshaft.
3. pure electric vehicle double-motor driving device according to claim 1, it is characterised in that the first deceleration quilt
Moving gear is supported on the jackshaft by needle bearing, and the second deceleration driven gear is by spline connection in described
On countershaft.
4. pure electric vehicle double-motor driving device according to claim 1, it is characterised in that the first deceleration quilt
Moving gear by spline connection on the jackshaft, the second deceleration driven gear by needle bearing be supported on it is described in
On countershaft.
5. pure electric vehicle double-motor driving device according to claim 1, it is characterised in that set on the jackshaft
Parking gear and synchronizer are equipped with, the parking gear is connected with the jackshaft by spline and connected with outside halting mechanism
Connect, the tooth set of the synchronizer is connected by spline with the jackshaft, the synchronizer is arranged on described first and slows down passively
The left side of gear or the second deceleration driven gear is simultaneously connected with exterior operator, and the outside structure that performs is by stirring
Clutch collar on the synchronizer come the real first deceleration driven gear or the second deceleration driven gear with it is described in
The engagement of countershaft and disconnection.
6. pure electric vehicle double-motor driving device according to claim 1, it is characterised in that described first drives electricity
Machine also includes the first motor stator and the first rotor, the first motor rotation transformation that are placed on first motor shaft
Device, the first motor rotary transformer is arranged in the outer end of first motor shaft and positioned at the inner face of the first electric motor end cap
Position at；
Second motor also include being placed in the second motor stator and the second rotor on second motor shaft,
Second motor rotary transformer, the second motor rotary transformer is arranged in the outer end of second motor shaft and positioned at second
At the position of the inner face of electric motor end cap.
7. pure electric vehicle double-motor driving device according to claim 1, it is characterised in that the output shaft support
On the rear end cap of first electric motor end cap connection, it is provided with to enter the semiaxis of the vehicle on second electric machine casing
Half sealing of row sealing, is provided with the output sealing sealed to output shaft in the rear on end cap.
8. pure electric vehicle double-motor driving device according to claim 1, it is characterised in that described first slows down master
Moving gear, the first deceleration driven gear, second deceleration driving gear, the second deceleration driven gear, the master
Deceleration driving gear and the main deceleration driven gear are all helical gear.
9. pure electric vehicle double-motor driving device according to claim 1, it is characterised in that first motor casing
Between body and first electric motor end cap, between second electric machine casing and second electric motor end cap and it is described first electricity
It is bolted between casing body and second electric machine casing, the main deceleration driven gear passes through with the differential carrier
Riveting, welding or bolt connection and be fixed together.
10. pure electric vehicle double-motor driving device according to claim 1, it is characterised in that described first drives
Motor and second motor are permagnetic synchronous motor or AC induction motor；
It is respectively formed with first electric machine casing and second electric machine casing to first motor stator and described
The cooling pipe that two motor stators are cooled down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710123308.9A CN106808989A (en) | 2017-03-03 | 2017-03-03 | A kind of pure electric vehicle double-motor driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710123308.9A CN106808989A (en) | 2017-03-03 | 2017-03-03 | A kind of pure electric vehicle double-motor driving device |
Publications (1)
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| CN106808989A true CN106808989A (en) | 2017-06-09 |
Family
ID=59116457
Family Applications (1)
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|---|---|---|---|
| CN201710123308.9A Pending CN106808989A (en) | 2017-03-03 | 2017-03-03 | A kind of pure electric vehicle double-motor driving device |
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| CN108248292A (en) * | 2018-03-12 | 2018-07-06 | 北京汽车研究总院有限公司 | A kind of automobile front axle inner shaft and automobile |
| CN108674162A (en) * | 2018-05-31 | 2018-10-19 | 汽解放汽车有限公司 | A kind of axle assembly of Dual-motors Driving |
| CN108757898A (en) * | 2018-06-06 | 2018-11-06 | 中国第汽车股份有限公司 | A kind of electric drive list gear reducer structure with neutral gear |
| CN108859711A (en) * | 2018-06-29 | 2018-11-23 | 山东蓬翔汽车有限公司 | A kind of integrated form different capacity Dual-motors Driving bridge with parking brake |
| CN109307050A (en) * | 2018-11-05 | 2019-02-05 | 绿传（北京）科技有限公司 | A kind of gear parallel institution for automatic transmission |
| CN111655522A (en) * | 2017-12-15 | 2020-09-11 | 瑞维安知识产权控股有限责任公司 | Electric vehicle drive unit |
| CN112193044A (en) * | 2020-09-30 | 2021-01-08 | 西门子电动汽车动力总成系统(上海)有限公司 | Electric drive assembly system and vehicle |
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| CN108674162A (en) * | 2018-05-31 | 2018-10-19 | 汽解放汽车有限公司 | A kind of axle assembly of Dual-motors Driving |
| CN108757898A (en) * | 2018-06-06 | 2018-11-06 | 中国第汽车股份有限公司 | A kind of electric drive list gear reducer structure with neutral gear |
| CN108859711A (en) * | 2018-06-29 | 2018-11-23 | 山东蓬翔汽车有限公司 | A kind of integrated form different capacity Dual-motors Driving bridge with parking brake |
| CN109307050A (en) * | 2018-11-05 | 2019-02-05 | 绿传（北京）科技有限公司 | A kind of gear parallel institution for automatic transmission |
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| WO2024021716A1 (en) * | 2022-07-27 | 2024-02-01 | 比亚迪股份有限公司 | Vehicle driving device and vehicle |
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Application publication date: 20170609 |