CN109203953A - Bi-motor pure electric vehicle multimode dynamical system and its driving method - Google Patents
Bi-motor pure electric vehicle multimode dynamical system and its driving method Download PDFInfo
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- CN109203953A CN109203953A CN201811230954.6A CN201811230954A CN109203953A CN 109203953 A CN109203953 A CN 109203953A CN 201811230954 A CN201811230954 A CN 201811230954A CN 109203953 A CN109203953 A CN 109203953A
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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
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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
- 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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- Combustion & Propulsion (AREA)
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Abstract
The invention discloses a kind of bi-motor pure electric vehicle multimode dynamical system and its driving methods, system includes main motor and auxiliary-motor, main motor and auxiliary-motor respectively drive differential assembly rotation, differential assembly output power, main motor and auxiliary-motor connect planetary assemblies between differential mechanism respectively, when starting bi-motor, drive main driving gear and secondary sliding tooth wheel rotation, gradually promote main motor revolving speed, pair drives geared teeth circle while main driving gear band moves input gear and then drives sun gear, sun gear and gear ring generate power superposition transmission planetary row, planet row is driven pivoted arm, pivoted arm exports high speed motive force mode.Different class revolving speeds are switched to bi-motor by the way that combination control and cooperation are braked and discharged to bi-motor, realize the multiple drive modes such as low speed, middling speed, high speed and ultrahigh speed, the cost-effectiveness requirement of low speed can also reach the above driving pleasure of experience high speed in not only meeting, and be widely applicable to the new energy vehicle of pure electric energy power system.
Description
Technical field
The invention belongs to automotive power, it is specifically related to the pure electric energy power system and its driving side applied to vehicle
Method.
Background technique
With the continuous development of society and Vehicle Engineering technology, car ownership is more and more big, causes to environment and the energy
Very big pressure, urgent need Vehicle Engineering actuation techniques carry out biggish innovation, first is that Technology of Hybrid Electric Vehicle, second is that pure electric vehicle
Technology.Above two technology relates generally to the innovation of vehicle drive system, first is that energy storage device is introduced, second is that introducing electric drive dress
It sets, such as motor.For the driving of current pure electric vehicle, most of vehicles drive vehicle driving using motor and single ratio gearbox,
It can satisfy the middle low-speed electronic automotive needs in some regions to a certain extent, however, domain full-time for high speed is electronic
For automobile, it has been difficult to take into account the transmission demand of low speed high torque and high speed, high efficiency high reliability, just there is an urgent need to use for this
The automatic transmission of double speed or more comes stand-by motor or bi-motor joint driving vehicle, gives full play in full velocity shooting
Electric drive power and high efficient area drive characteristic.Currently, there is following several solutions: first is that being aided with wet type using planetary gear
Friction plate utilizes two grades for electric vehicle or multidrive of hydraulic gear-shifting；Second is that using motor driven shifting-fork gear-shifting
Two grades or multidrive；Third is that being aided with two grades or multi gear fluid drive of shifting-fork gear-shifting gear set using the double clutches of wet type
Device.However, the main problems faced of automatic gearbox for electric automobile technical research has: one, input speed is fired relative to tradition
Petrol car improves nearly three times, and (conventional fuel oil car input speed is mostly within 3000rpm, and electric car revolving speed exists more
12000rpm or more), cause gearbox efficiency, shift mode, lubricating system that qualitative change has occurred, conventional gearbox technology is difficult
To adapt to；Two, there is idling work state in conventional fuel oil automobile, thus, shift hydraulic pump can provide minimum shift pressure.
However, motor in electric automobile is that gradually to specified speed, conventional hydraulic technology of shifting gears no longer is applicable in raising speed from 0 revolving speed；Three, motor
Overload torque high acceleration is big, and gearbox input torque is much larger than conventional fuel oil automobile, and shift clutching member is caused to be difficult to match；
Four, orthodox car uses mechanical braking, and noenergy recycles this requirement；However, electric car needs recycling as maximized as possible
Braking energy causes gearbox brake shift control difficulty big；Five, for opposite orthodox car, electric car is to fluid drive
The requirement of case transmission efficiency is high, causes automatic gear-box structure-design technique difficulty big；Six, high frequency vibrating caused by the high revolving speed of motor
A series of problems, such as dynamic, self-excited vibration, noise, impact, fatigue damage, fretting wear, processing difficulty was big；Seven, equivalent axial width
It is small, that is, it needs automatic gear-box to design thinner, to leave preferable space for motor axial dimension, causes facewidth equivalent negative
Lotus is very big, and design difficulty is big；Eight, require automatic transmission gear shift rapid, power-interruption free；Nine, as vehicle super-high technology is low
Cost direction is developed, it is desirable that automatic gear-box low cost.Therefore up to the present, there are no it is a truly two speed or
Multi-speed automatic speed-changing system adapts to electric car and uses, and the high-grade electric car especially required with ultrahigh speed speed uses.
Summary of the invention
A kind of the technical problem to be solved in the present invention is to provide motor limit speeds low, adjustable transmission speed ratio, system operation
High-efficient bi-motor pure electric vehicle multimode dynamical system and its driving method.
In order to solve the above-mentioned technical problem, a kind of the technical solution adopted by the present invention are as follows: bi-motor pure electric vehicle multimode power
System, including main motor and auxiliary-motor with motor shaft, main motor and auxiliary-motor respectively drive differential assembly rotation, differential
Device assembly output power, the main motor and auxiliary-motor connect planetary assemblies between differential mechanism respectively.
Further, the planet row component includes planet row, and planet row external toothing is driven sun gear and simultaneously internal messing
It is driven the inner ring of gear ring, the periphery of gear ring is provided with the gear teeth, and sun gear is co-axially mounted pivoted arm, and pivoted arm drives differential assembly to turn
It is dynamic；The main motor driving sun gear rotation, and the gear teeth of auxiliary-motor driven gear ring periphery.
Further, the main motor shaft installs main driving gear, and main driving gear external toothing is driven input gear, input
Gear is co-axially mounted sun gear.
Further, the secondary driving gear of auxiliary-motor axis installation, the wheel of pair driving gear external toothing transmission gear ring periphery
Tooth.
Further, the axis of the main motor and auxiliary-motor is located on same center line.
Further, the axis of the main motor and auxiliary-motor is parallel to each other.
Further, the axis of the main motor and auxiliary-motor is mutually perpendicular to.
Another technical solution that the present invention uses are as follows: a kind of bi-motor pure electric vehicle multimode driving method, starting main motor and
Auxiliary-motor drives main driving gear and secondary sliding tooth wheel rotation, gradually promotes main motor revolving speed, the dynamic input tooth of main driving gear band
Pair drives geared teeth circle while taking turns and then drive sun gear, and sun gear and gear ring generate power superposition transmission planetary row,
Planet row is driven pivoted arm, and pivoted arm exports high speed motive force mode.
Further, start main motor and auxiliary-motor, drive main driving gear and secondary sliding tooth wheel rotation, gradually promoted secondary
Motor speed, pair drives geared teeth circle, sun gear while main driving gear band moves input gear and then drives sun gear
Power superposition transmission planetary row is generated with gear ring, planet row is driven pivoted arm, and pivoted arm exports ultrahigh speed dynamic mode.
Implement above-mentioned technical proposal, due to use Dual-motors Driving planetary assemblies, when by bi-motor carry out braking and
Release combination control and cooperation switch different class revolving speeds to bi-motor, and it is more to realize low speed, middling speed, high speed and ultrahigh speed etc.
Kind of drive mode has the characteristics that low motor limit speed, adjustable transmission speed ratio, running efficiency of system are high, not only meets
The cost-effectiveness requirement of low speed can also reach the above driving pleasure of experience high speed, be widely applicable to the new of pure electric energy power system
Energy vehicle.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of bi-motor pure electric vehicle multimode dynamical system.
In figure: 1- main motor；2- main motor shaft；3- main brake disk；4- main motor brake；The main driving gear of 5-；6- is defeated
Enter gear；7- pair drives gear；8- auxiliary-motor；9- auxiliary-motor axis；10- pair brake disc；11- auxiliary-motor brake；12- gear ring；
13- pivoted arm；14- planet row；15- sun gear；16- sun wheel shaft；17- differential assembly；18- left half axle；19- right axle shaft.
Specific embodiment
Specific embodiments of the present invention will be further explained with reference to the accompanying drawing.It should be noted that for
The explanation of these embodiments is used to help understand the present invention, but and does not constitute a limitation of the invention.In addition, disclosed below
The each embodiment of the present invention involved in technical characteristic can be combined with each other as long as they do not conflict with each other.
As shown in Figure 1, bi-motor pure electric vehicle multimode dynamical system is mainly by main motor 1, auxiliary-motor 8, shaft gear pair, one group
Planetary assemblies, two groups of electromotor brakes and a differential assembly 17 form.Shaft gear pair includes main driving gear 5, secondary drive
Moving gear 7 and input gear 6.Main motor 1, main driving gear 5, secondary driving gear 7, auxiliary-motor 8 are sequentially coaxially arranged.Pass through choosing
The release and closure and main motor and the combination of auxiliary-motor different rotating speeds for selecting two groups of brakes, realize low speed, middling speed, high speed and
Ultrahigh speed drive mode.
Main motor 1 drives main motor shaft 2, and main motor shaft 2 installs main driving gear 5.Auxiliary-motor 8 drives auxiliary-motor axis 9, secondary
Motor shaft 9 installs secondary driving gear 7.
Planetary assemblies are made of sun gear 15, planet row 14, gear ring 12 and pivoted arm 13.Input gear 6 passes through sun wheel shaft
16 are fixedly connected with sun gear 15, and simultaneous processing has ring gear and external gear, sun gear 15 and row on the internal and external circumference of gear ring 12
Star arranges 14 external toothings, the ring gear internal messing of planet row 14 and gear ring 12, and planet row 14 is mounted on pivoted arm 13.Main driving gear
5 drive the external gear external toothing of gear 7 and gear ring 12, the shell of pivoted arm 13 and differential assembly 17 with 6 external toothing of input gear, pair
Body is fixedly connected, and differential assembly 17 passes through 19 output power of left half axle 18 and right axle shaft.
Main motor brake 4 is made of main brake disk 3 and left and right friction block, and main brake disk 3 is mounted on a left side by certain interval
Between right friction block, main motor brake 4 is fixedly mounted on the outside of the end cap of main motor 1, and main brake disk 3 is fixedly mounted on main electricity
The right end of the left end of arbor 2, main motor shaft 2 is fixedly mounted or is directly machined with main driving gear 5.
Auxiliary-motor brake 11 is made of secondary brake disc 10 and left and right friction block, and secondary brake disc 10 is mounted on by certain interval
Between the friction block of left and right, auxiliary-motor brake 11 is fixedly mounted on the outside of the end cap of auxiliary-motor 8, and secondary brake disc 10 is fixedly mounted on
The left end of the right end of auxiliary-motor axis 9, auxiliary-motor axis 9 is fixedly mounted or is directly machined with secondary driving gear 7.
There are five types of drive modes for bi-motor pure electric vehicle multimode dynamical system tool:
1, the low speed drive mode of V0~V1.When the lower speed of vehicle demand when driving, main motor brake 4 discharges, secondary
Electromotor brake 11 is closed, i.e., main brake disk 3 is in the state that is freely rotated, and secondary brake disc 10 is in and is braked state, in turn, main
Driving gear 5 is in the state that is freely rotated, and pair driving gear 7 is in the state that is locked up, i.e. gear ring 12 is in and is locked up state；It is main
Power is passed to input gear 6 by main driving gear 5 by main motor shaft 2 by motor 1, and input gear 6 passes through sun wheel shaft 16
Pass to sun gear 15, power is passed to pivoted arm 13 through planet row 14 by sun gear 15, and pivoted arm 13 is by large speed ratio reduction of speed torque increase
Power passes to differential assembly 17, and differential assembly 17 exports power by left half axle 18 and right axle shaft 19.Under the mode,
The differential casing revolving speed and 1 revolving speed quantitative relation of main motor of differential assembly 17:
Wherein: Z1 indicates the number of teeth of main driving gear 5；The number of teeth of Z2 expression input gear 6；The tooth of Z3 expression sun gear 15
Number；The ring gear number of teeth of Z4 expression gear ring 12；The external gear number of teeth of Z5 expression gear ring 12；Z6 indicates the number of teeth of secondary driving gear 7；
The revolving speed of n1 expression main motor 1；The revolving speed of n2 expression auxiliary-motor 8；The differential casing revolving speed of n3 expression differential assembly 17.
2, the medium speed drive mode of V1-V2.When the medium speed of vehicle demand when driving, main motor brake 4 is closed, secondary
Electromotor brake 11 discharges, i.e., main brake disk 3 is in the state that is braked, and secondary brake disc 10 is in and state is freely rotated, in turn, main
Driving gear 5 is in the state that is locked up, i.e. sun gear 15 is in the state that is locked up, and pair driving gear 7, which is in, is freely rotated state；
Power is driven gear 7 to pass to gear ring 12 by auxiliary-motor 8 by auxiliary-motor axis 9 by secondary, and gear ring 12 passes power through planet row 14
Pass pivoted arm 13, the power of small speed ratio reduction of speed torque increase is passed to differential assembly 17 by pivoted arm 13, and differential assembly 17 is by power
It is exported by left half axle 18 and right axle shaft 19.Under the mode, the differential casing revolving speed and 8 revolving speed of auxiliary-motor of differential assembly 17
Quantitative relation:
3, V2~V3 high speed drive mode.When the higher speed of vehicle demand when driving, main motor brake 4 discharges, secondary
Electromotor brake 11 discharges, i.e. main brake disk 3 and secondary brake disc 10 is all in the state that is freely rotated, in turn, main 5 He of driving gear
Pair driving gear 7 is all in being freely rotated state；Auxiliary-motor 8 keeps the revolving speed (n20) when V2 speed constant, 1 revolving speed of main motor
Speed is gradually increased to from stationary state and reaches V3, i.e. main motor 1 controls the stage speed；Main motor 1 will by main motor shaft 2
Power passes to sun gear 15 by main driving gear 5, input gear 6, sun wheel shaft 16；Meanwhile auxiliary-motor 8 is electric by pair by power
Arbor 9 drives gear 7 to pass to gear ring 12 by secondary；Planet row 14 passes after being superimposed from sun gear 15 with the power of gear ring 12
Pivoted arm 13 is passed, main motor 1 and the superimposed power of auxiliary-motor 8 are passed to differential assembly 17, differential assembly by pivoted arm 13
17 export power by left half axle 18 and right axle shaft 19.Under the mode, the differential casing revolving speed of differential assembly 17 and master
8 revolving speed of 1 revolving speed of motor and auxiliary-motor (permanent revolving speed n20) quantitative relation:
4, V3~V4 superelevation speed drive mode.When vehicle demand superelevation speed when driving, main motor brake 4 discharge,
Auxiliary-motor brake 11 discharges, i.e. main brake disk 3 and secondary brake disc 10 is all in the state that is freely rotated, in turn, primary input gear 5
With auxiliary input gear 7 all in state is freely rotated；Main motor 1 keeps the revolving speed (n10) when V3 speed constant, and 8 turns of auxiliary-motor
Revolving speed is gradually increased to speed and reaches V4 when speed is from V2 speed state, i.e. auxiliary-motor 8 controls the stage speed；Main motor 1 passes through
Power is passed to sun gear 15 by primary input gear 5, input gear 6, sun wheel shaft 16 by main motor shaft 2；Meanwhile auxiliary-motor 8
Power is passed into gear ring 12 by auxiliary input gear 7 by auxiliary-motor axis 9；Planet row 14 will be from sun gear 15 and gear ring 12
Pivoted arm 13 is passed to after power superposition, main motor 1 and the superimposed power of auxiliary-motor 8 are passed to differential assembly by pivoted arm 13
17, differential assembly 17 exports power by left half axle 18 and right axle shaft 19.Under the mode, the differential mechanism of differential assembly 17
Shell revolving speed and 1 revolving speed of main motor (permanent revolving speed n10) and 8 revolving speed quantitative relation of auxiliary-motor:
5, parking and urgent center brake mode.When the emergency braking of vehicle demand and parking, main motor brake 4 and pair
Electromotor brake 11 is all closed, i.e. main brake disk 3 and secondary brake disc 10 is all in the state that is braked, in turn, 15 He of sun gear
Gear ring 12 is in lockup state, and planet row 14 and differential assembly 17 are in lockdown mode, bi-motor pure electric vehicle multimode dynamical system
System is in park mode or urgent centre brake mode.
In conjunction with attached drawing, the embodiments of the present invention are described in detail above, but the present invention is not limited to described implementations
Mode.For a person skilled in the art, in the case where not departing from the principle of the invention and spirit, to these embodiments
A variety of change, modification, replacement and modification are carried out, are still fallen in protection scope of the present invention.
Claims (9)
1. a kind of bi-motor pure electric vehicle multimode dynamical system, including main motor and auxiliary-motor with motor shaft, main motor and pair
Motor respectively drives differential assembly rotation, differential assembly output power, it is characterised in that: the main motor and auxiliary-motor point
Planetary assemblies are not connected between differential mechanism.
2. bi-motor pure electric vehicle multimode dynamical system according to claim 1, which is characterized in that the planet row component packet
Planet row is included, planet row external toothing is driven sun gear and the inner ring of Inside gear drive gear ring, the periphery of gear ring are provided with wheel simultaneously
Tooth, sun gear are co-axially mounted pivoted arm, and pivoted arm drives differential assembly rotation；The main motor driving sun gear rotation, and secondary electricity
The gear teeth of machine driven gear ring periphery.
3. bi-motor pure electric vehicle multimode dynamical system according to claim 2, which is characterized in that the main motor shaft installation
Main driving gear, main driving gear external toothing are driven input gear, and input gear is co-axially mounted sun gear.
4. bi-motor pure electric vehicle multimode dynamical system according to claim 2, which is characterized in that the auxiliary-motor axis installation
Pair driving gear, the gear teeth of pair driving gear external toothing transmission gear ring periphery.
5. bi-motor pure electric vehicle multimode dynamical system according to claim 1, which is characterized in that the main motor and pair electricity
The axis of machine is located on same center line.
6. bi-motor pure electric vehicle multimode dynamical system according to claim 1, which is characterized in that the main motor and pair electricity
The axis of machine is parallel to each other.
7. bi-motor pure electric vehicle multimode dynamical system according to claim 1, which is characterized in that the main motor and pair electricity
The axis of machine is mutually perpendicular to.
8. a kind of bi-motor pure electric vehicle multimode driving method, it is characterised in that: starting main motor and auxiliary-motor drive main sliding tooth
Wheel and secondary sliding tooth wheel rotation, gradually promote main motor revolving speed, and main driving gear band moves input gear and then drives sun gear
Secondary driving geared teeth circle simultaneously, sun gear and gear ring generate power superposition transmission planetary row, and planet row is driven pivoted arm, pivoted arm
Export high speed motive force mode.
9. a kind of bi-motor pure electric vehicle multimode driving method, it is characterised in that: starting main motor and auxiliary-motor drive main sliding tooth
Wheel and secondary sliding tooth wheel rotation, gradually promote auxiliary-motor revolving speed, and main driving gear band moves input gear and then drives sun gear
Secondary driving geared teeth circle simultaneously, sun gear and gear ring generate power superposition transmission planetary row, and planet row is driven pivoted arm, pivoted arm
Export ultrahigh speed dynamic mode.
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| CN201811230954.6A CN109203953A (en) | 2018-10-22 | 2018-10-22 | Bi-motor pure electric vehicle multimode dynamical system and its driving method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811230954.6A CN109203953A (en) | 2018-10-22 | 2018-10-22 | Bi-motor pure electric vehicle multimode dynamical system and its driving method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111204201A (en) * | 2020-01-14 | 2020-05-29 | 吉利汽车研究院（宁波）有限公司 | Power assembly based on double motors are connected in parallel in opposition |
| CN111873775A (en) * | 2020-08-31 | 2020-11-03 | 福州大学 | Dual-motor power coupling system based on small-tooth-difference planetary gear and hole pin type mechanism |
| CN113173064A (en) * | 2020-05-22 | 2021-07-27 | 西安交通大学 | Novel power device for driving double-motor multi-mode electric automobile and automobile |
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