CN109849643A - A kind of new energy vehicle retarder system - Google Patents
A kind of new energy vehicle retarder system Download PDFInfo
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- CN109849643A CN109849643A CN201910215728.9A CN201910215728A CN109849643A CN 109849643 A CN109849643 A CN 109849643A CN 201910215728 A CN201910215728 A CN 201910215728A CN 109849643 A CN109849643 A CN 109849643A
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Abstract
The present invention relates to a kind of new energy vehicle retarder systems applied to new energy vehicle field, including central electronic control unit ECU, retarder, detection sensing unit, generator/motor, hydraulic control clutch etc., the speed changer includes planetary gear set and pinion unit, pass through the special designing and optimal control of multiple hydraulic control clutch, one-way clutch and planetary gear set and pinion unit, reduce the impact in vehicle travel process and riding experience, and reduces thus damage and service life reduction problem that component may cause.
Description
Technical field
The present invention relates to technical field of new energy more particularly to a kind of new energy vehicle retarder systems.
Background technique
It being shown according to news report data, new-energy automobile sale is like a raging fire, but existing vehicle is there are still problems,
Such as service life, riding experience etc..For the dynamical system of new energy vehicle, especially retarder system is being run
In the process, especially when driving method switching or gear transmission ratio switch, due to engine output torque and hydraulic control clutch
Device transmit it is not smooth enough when the fluctuating change or gear switch of torque and generator/motor output torque, occur torque and
Fluctuation of speed impact is transmitted, causes torque switching and revolving speed excessively unsmooth, brings sticky feeling to driver and passenger personnel
Feel, while be easy to causeing vehicle component damage, the service life is shorter.The present invention is based on the problem and proposes to improve, it is desirable to provide
A kind of reducer power system for new energy vehicle, solves the above problems.
Summary of the invention
It is an object of the invention to: overcome above-mentioned deficiency in the prior art, a kind of new energy vehicle retarder system is provided,
Its with dynamical system and retarder special construction design stabilization reasonable, reliable for operation and carry out control fining, can be effective
It solves the problems, such as impact irregularity when operational mode switching and/or reduction ratio switch, reduce uncomfortable feeling and component is avoided to damage
Bad, the advantages that service life is short.
In order to achieve the above object, the present invention adopts the following technical scheme that realization:
A kind of new energy vehicle retarder system, the new energy vehicle retarder system include: that central electronic control is single
First ECU, generator/motor, hydraulic control clutch, retarder, engine, detection sensing unit, electric energy storage device；
Hydraulic control clutch is used for the disconnection of selectivity as needed or combines engine and generator/motor, and by
The size by adjusting fluid control pressure is arranged to change the torque delivery value of hydraulic control clutch transmitting；
Retarder is set to generator/motor downstream；The retarder includes being actively entered axis, first gear, second
Gear, input shaft clutch, driven output shaft, third gear, the 4th gear, output shaft clutch, one-way clutch, hydraulic pump
Unit, planetary ring gear, planetary gear, planet carrier, sun gear, annular bearing, planet carrier output gear；The generator/motor
Output shaft couples with the left end for being actively entered axis；The right end connection hydraulic pump unit for being actively entered axis；Described first
Gear, which is fixed at, to be actively entered on axis and is located on the left of hydraulic pump unit, and the second gear is rotatablely arranged at actively
Left side on input shaft and positioned at first gear；The input shaft clutch is located at the left side of second gear, the input shaft from
The outer ring clutch part of clutch is fixedly connected with the gear ring of second gear, the inner ring clutch part of the input shaft clutch and master
Driven input shaft is fixedly connected, and the inside and outside circle clutch part of the input shaft clutch can be combined with each other or isolated connection；
4th gear is fixed on the left end of driven output shaft and is meshed with the second gear；The third gear can be rotated
Ground is set on driven output shaft and is located at the right side of the 4th gear and is meshed with first gear；The third gear with it is described
Planetary ring gear is fixedly connected, and the planetary ring gear is engaged with the planetary gear, and the planetary gear is engaged with the sun gear, described
Sun gear is fixed on the right end of the driven output shaft, and the output shaft clutch is located at the third gear and the sun
The outer ring clutch part of position between wheel, the output shaft clutch is fixedly connected with the planet carrier, the output shaft clutch
The inner ring clutch part of device is fixedly connected with the driven output shaft, the inside and outside circle clutch part of the output shaft clutch
Part can be combined with each other or isolated connection；The excircle of the planetary ring gear is rotatably fixed installation by the annular bearing
On the new energy vehicle；One end of the planet carrier connects the planet carrier output gear, the planet carrier output gear with
The engagement of axletree differential gear；The power of the planet carrier output gear passes through axletree differential gear, axletree differential
Device, axletree are transmitted to wheel 7；The outer ring of the one-way clutch is fixedly connected with the internal tooth hub of second gear, described unidirectional
The inner ring of clutch is fixedly connected with the axis that is actively entered；
The new energy vehicle retarder system further includes hydraulic control clutch control unit, motor control unit, the inspection
Survey sensing unit, hydraulic pump unit, hydraulic control clutch control unit, motor control unit with central electronic control unit ECU
Signal connects and is controlled by central electronic control unit ECU；The central electronic control unit ECU is connect with engine signal,
It can be used for adjusting engine torque and revolving speed；Hydraulic control clutch control unit is connect with hydraulic control clutch signal, can be used for adjusting
Hydraulic control clutch combination pressure and then the torque delivery value size for adjusting hydraulic control clutch transmitting；Motor control unit and power generation/
Motor signal connection, can be used for controlling generator/motor output torque and revolving speed；Central electronic control unit ECU and deceleration
The connection of device signal, can be used for controlling retarder；Electric energy storage device is electrically connected with generator/motor；Central electronic control unit ECU
It is connect with electric energy storage device signal, can be used for controlling the charge and discharge of electric energy storage device；
The detection sensing unit is used to detect vehicle running state, driver's mode of operation；
Central electronic control unit ECU can be according to the vehicle running state and driver that the detection sensing unit detects
Mode of operation predicts the running mode that will be applied；
The running mode include generator/motor be operated alone pure electric vehicle driving operational mode, engine and
The hybrid power that generator/motor drives jointly drives operational mode；When hydraulic control clutch disconnects, is driven and transported using pure electric vehicle
Row mode drives operational mode using hybrid power when hydraulic control clutch is combined；
The new energy vehicle retarder system further include: in vehicle travel process, connect first with detection sensing unit
Continuous to obtain vehicle running state and driver's operational status information, the central electronic control unit ECU is according between preset time
Every the vehicle running state and driver's operational status information for sampling detection sensing unit acquisition described in point sampling, and according to described
Vehicle running state information determines the running mode of new energy vehicle described in current sampling point, and the central electronic control is single
The running mode that the variation prediction for driver's operational status information that first ECU is acquired according to neighbouring sample point will be applied,
When driver's operational status information of acquisition changes, central electronic control unit ECU is transported according to the current traveling of vehicle
Row mode and the running mode that will be applied control the switching that vehicle carries out running mode: S1 in accordance with the following steps)
When central electronic control unit ECU prediction vehicle will be driven operational mode to be switched to hybrid power driving fortune by pure electric vehicle
When row mode, increase the output torque of generator/motor, while increasing hydraulic control clutch pressure to the first setup pressure value, makes
Hydraulic control clutch generates sliding, to start engine；Engine torque is gradually increased after engine start, while being continued gradually
Increase the pressure of hydraulic control clutch, until making the second setup pressure value that hydraulic control clutch is completely combined, increases engine torque
While with hydraulic control clutch pressure is increased, the central electronic control unit ECU is based on engine torque and hydraulic control clutch
Pressure adjusts generator/motor output torque in real time, to maintain wheel demand torque to keep constant or compared with minor swing；S2) work as institute
Stating central electronic control unit ECU prediction vehicle will be driven operational mode to be switched to pure electric vehicle driving operation mould by hybrid power
When formula, it is gradually reduced engine torque, while reducing hydraulic control clutch pressure, hydraulic control clutch is made to generate sliding, until hydraulic control
Clutch is fully disconnected；While reducing engine torque and hydraulic control clutch pressure, the central electronic control unit ECU
Generator/motor output torque is adjusted in real time based on engine torque and hydraulic control clutch pressure, to maintain wheel demand torque
It keeps constant or compared with minor swing；
It is preferred that first setup pressure value is arranged to reach first setup pressure value when hydraulic control clutch pressure
When the torque delivery value transmitted be less than the difference of generator/motor available peak torque and wheel demand torque；
It is preferred that the pressure of the hydraulic control clutch rises to the time change of the second setup pressure value from the first setup pressure value
Rate is 3 to 4.5 times bigger than the time rate of change for rising to the first setup pressure value from zero point；
It is preferred that the vehicle running state includes travel speed, engine torque, generator/motor torque, electric energy storage dress
The state-of-charge set, driver's mode of operation include accelerator-pedal operation amount, brake pedal operation amount；
It is preferred that the 4th gear and the gear ratio of second gear are the 2- of the gear ratio of third gear and first gear
2.5 again.
Furthermore the present invention uses one-way clutch, when input shaft clutch separates simultaneously with output shaft clutch, unidirectionally
The Internal and external cycle of clutch is in synchronous regime, and the transmission ratio of retarder is constant (to be equivalent to input shaft clutch combination and output shaft
Reduction ratio when clutch separation state), vehicle keeps current first reduction ratio gear to move ahead, at this point, when retarder needs
When being raised to second reduction ratio gear by first reduction ratio gear, output shaft clutch can be completely disconnected in input shaft clutch
Combination is executed after opening；After input shaft clutch is fully disconnected, the combination of output shaft clutch gradually makes retarder is gentle to mention
Height is to second reduction ratio gear；And when retarder needs drop to first reduction ratio gear by second reduction ratio gear,
Only need to export shaft clutch gradually disconnects simultaneously input shaft clutch gradually combine, retarder gently be switched to first deceleration
Compare gear.Remain that power compared with minor swing, reduces impact and sense of discomfort in entire reduction ratio handoff procedure.
It is had the following beneficial effects: using electromechanical power system of the invention
(1) reducer structure design of the present invention is reasonable, in particular by planetary gear train and Double-gear parallel axes wheel tying
It closes, and using the application of two clutches and combination one-way clutch, when input shaft clutch and output shaft clutch divide simultaneously
From when, the Internal and external cycle of one-way clutch is in synchronous regime, and the transmission ratio of retarder is constant, vehicle keep it is current first deceleration
Than gear move ahead, at this point, when retarder needs second reduction ratio gear is raised to by first reduction ratio gear when, output shaft from
Clutch can execute combination after input shaft clutch is fully disconnected；After input shaft clutch is fully disconnected, shaft clutch is exported
Combination gradually make retarder it is gentle be increased to second reduction ratio gear；And when retarder is needed by second reduction ratio
When gear drops to first reduction ratio gear, only need to export shaft clutch gradually disconnects and meanwhile input shaft clutch gradually combine,
Retarder it is gentle be switched to first reduction ratio gear.Remained in entire reduction ratio handoff procedure power compared with minor swing,
Reduce impact and sense of discomfort.
(2) in addition, in the present invention, vehicle is carrying out pure electric vehicle driving operational mode to hybrid power driving operational mode
And/or hybrid power driving operational mode is driven to pure electric vehicle when switching between operational mode, optimal control through the invention
Strategy, this advantageously reduces the feeling of the impact discomfort of driver and passenger's sense organ, and reduces what thus component may cause
Damage and service life reduce problem.In the present invention, generator/motor power is transmitted to wheel by retarder, additional dynamic when needing
When power or specific demand, start engine and power is provided, control is simple and effective, does not need additional Special controlling mechanism
Optimal control can be realized with control equipment, manufacturing cost is effectively reduced, increases service life and driving comfort.
Detailed description of the invention
Attached drawing 1 is the structural schematic diagram of new energy vehicle retarder system of the present invention.
Specific embodiment
The retarder system of 1 pair of new energy vehicle of the present invention is described in detail with reference to the accompanying drawing.
A kind of new energy vehicle retarder system, the new energy vehicle retarder system include: that central electronic control is single
First ECU, generator/motor 2, hydraulic control clutch 3, retarder 4, engine 1, detection sensing unit 6, electric energy storage device 5；
Hydraulic control clutch 3 is used for the disconnection of selectivity as needed or combines engine 1 and generator/motor 2, and
And the size by adjusting fluid control pressure is configured to change the torque delivery value of the transmitting of hydraulic control clutch 3；
Retarder 4 is set to 3 downstream of generator/motor；The retarder 4 includes being actively entered axis 11, first gear
16, second gear 13, input shaft clutch 14, driven output shaft 12, third gear 18, the 4th gear 17, output shaft clutch
19, one-way clutch 15, hydraulic pump unit 10, planetary ring gear 20, planetary gear 21, planet carrier 22, sun gear 23, annular bearing
24, planet carrier output gear 25；The output shaft of the generator/motor 2 couples with the left end for being actively entered axis 11；It is described
It is actively entered the right end connection hydraulic pump unit 10 of axis 11；The first gear 16, which is fixed at, to be actively entered on axis 11 and position
In 10 left side of hydraulic pump unit, the second gear 13, which is rotatablely arranged at, to be actively entered on axis 11 and is located at first gear 16
Left side；The input shaft clutch 14 is located at the left side of second gear 13, the outer ring clutch part of the input shaft clutch 14
Part is fixedly connected with the gear ring of second gear 13, and the inner ring clutch part of the input shaft clutch 14 is consolidated with axis 11 is actively entered
Fixed connection, the inside and outside circle clutch part of the input shaft clutch 14 can be combined with each other or isolated connection；Described 4th
Gear 17 is fixed on the left end of driven output shaft 12 and is meshed with second gear 13；The third gear 18 can be rotated
Ground is set on driven output shaft 12 and is located at the right side of the 4th gear 17 and is meshed with first gear 16；The third gear
18 are fixedly connected with the planetary ring gear 20, and the planetary ring gear 20 is engaged with the planetary gear 21, the planetary gear 21 and institute
The engagement of sun gear 23 is stated, the sun gear 23 is fixed on the right end of the driven output shaft 12, the output shaft clutch 19
The position between the third gear 18 and the sun gear 23, the outer ring clutch part of the output shaft clutch 19 and institute
It states planet carrier 22 to be fixedly connected, the inner ring clutch part of the output shaft clutch 19 and the fixed company of the driven output shaft 12
It connects, the inside and outside circle clutch part of the output shaft clutch 19 can be combined with each other or isolated connection；The planetary ring gear
20 excircle is rotatably fixed by the annular bearing 24 and is mounted on the new energy vehicle；The one of the planet carrier 22
End connects the planet carrier output gear 25, and the planet carrier output gear 25 is engaged with axletree differential gear 26；It is described
The power of planet carrier output gear 25 is transmitted to wheel 7 by axletree differential gear 26, axletree differential mechanism, axletree；
The outer ring of the one-way clutch 15 is fixedly connected with the internal tooth hub of second gear 13, the inner ring of the one-way clutch 15 and institute
It states and is actively entered axis 11 and is fixedly connected；
The new energy vehicle retarder system further includes hydraulic control clutch control unit 8, motor control unit 9, described
Sensing unit 6, hydraulic pump unit 10, hydraulic control clutch control unit 8, motor control unit 9 is detected to control with central electronic
Unit ECU signal connects and is controlled by central electronic control unit ECU；The central electronic control unit ECU and engine 1 are believed
Number connection, can be used for adjusting engine torque and revolving speed；Hydraulic control clutch control unit 8 is connect with 3 signal of hydraulic control clutch, can
For adjusting the torque delivery value size of hydraulic control clutch combination pressure and then adjusting hydraulic control clutch transmitting；Motor control unit
9 connect with generator/motor signal, can be used for controlling 2 output torque of generator/motor and revolving speed；Central electronic control unit
ECU is connect with 4 signal of retarder, can be used for controlling retarder 4；Electric energy storage device 5 is electrically connected with generator/motor；Central electricity
Sub-control unit ECU is connect with 5 signal of electric energy storage device, can be used for controlling the charge and discharge of electric energy storage device 5.
The detection sensing unit 6, is used to detect vehicle running state, driver's mode of operation；The vehicle driving
State includes travel speed, engine torque, generator/motor torque, the state-of-charge of electric energy storage device, hydraulic control clutch shape
Each clutch state etc. in state, retarder, driver's mode of operation include accelerator-pedal operation amount, brake pedal operation
Amount etc..
Central electronic control unit ECU is operated according to the vehicle running state and driver of the detection sensing unit detection
The running mode that status predication will be applied, every trade of going forward side by side sail the switching of operational mode；
The running mode includes pure electric vehicle the driving operational mode, engine 1 that generator/motor 2 is operated alone
Operational mode is driven with the hybrid power that generator/motor 2 drives jointly；When hydraulic control clutch 3 disconnects, driven using pure electric vehicle
Dynamic operational mode drives operational mode using hybrid power when hydraulic control clutch 3 is combined.Running mode further includes this
The operational modes such as driving power generation, regenerative braking, power generation in parking known to field.
In driving process of the present invention, can preferentially and/or mainly it be provided using generator/motor for vehicle driving dynamic
Power, generator/motor power are transmitted to wheel by retarder, when in special circumstances, such as need large torque or vehicle electricity
When insufficient, either in low speed and large torque demand perhaps high speed large torque demand or the occasion of less demanding to exhaust emissions
When, using the binding operation of hydraulic control clutch, accessing engine power cogeneration/motor one is all that vehicle provides power.
Certainly, retarder transmission ratio is preferably fixed, and particular/special requirement can be set to the side for being controlled the changeable transmission ratio of unit control
Formula.
When the bonding state in running mode handover procedure there are hydraulic control clutch changes, such as by pure electricity
When dynamic driving operational mode is switched to hybrid power driving operational mode, alternatively, being switched to by hybrid power driving operational mode
When pure electric vehicle drives operational mode, it will usually the biggish torque ripple impact for combining or separating and driver occur and passenger feels
The impact discomfort of official is felt.To solve the above problems, the logic of control process when showing the switching to mode is described in detail.
When vehicle driving, vehicle running state is continuously acquired first with detection sensing unit and driver's mode of operation is believed
Breath, the central electronic control unit ECU (are such as spaced 1-10 seconds) the sampling detection according to prefixed time interval sampled point
The vehicle running state and driver's operational status information that sensing unit obtains, and determined according to the vehicle running state information
The running mode of new energy vehicle described in current sampling point, the central electronic control unit ECU pass through neighbouring sample point
The running mode that the variation prediction of driver's operational status information of acquisition will be applied is (obviously when neighbouring sample point drives
Member's operational status information does not change, then it is assumed that does not need switching traveling operational mode), when driver's mode of operation of acquisition
When information changes, central electronic control unit ECU is according to traveling vehicle current running mode and will applied
Operational mode controls the switching that vehicle carries out running mode: S1 in accordance with the following steps) when the central electronic control unit
When ECU predicts that the vehicle will be driven operational mode to be switched to hybrid power driving operational mode by pure electric vehicle, increase power generation/
The output torque of motor, while increasing hydraulic control clutch pressure to the first setup pressure value, so that hydraulic control clutch is generated sliding,
To start engine；Engine torque is gradually increased after engine start, while continuing to gradually increase the pressure of hydraulic control clutch
Power, until making the second setup pressure value that hydraulic control clutch is completely combined, increasing engine torque and increasing hydraulic control clutch pressure
While power, the central electronic control unit ECU is based on engine torque and hydraulic control clutch pressure adjusts power generation/electricity in real time
Motivation output torque, to maintain wheel demand torque to keep constant or compared with minor swing.This advantageously reduces driver and passenger's sense
The uncomfortable feeling of the impact of official, and reduce thus damage and service life reduction problem that component may cause.
Wherein, it maintains vehicle to operate normally to guarantee to provide enough wheel demand torques, prevents engine
Starting consumes the torque of too many generator/motor output, and first setup pressure value is arranged to when hydraulic control clutch pressure
The torque delivery value transmitted when reaching first setup pressure value is less than the available peak torque of generator/motor and vehicle
Take turns the difference of demand torque.
In addition, in order to reduce as far as possible engine be added suddenly generation power transmitting fluctuation, hydraulic control clutch pressure from
Zero point (that is, initial pressure that hydraulic control clutch does not generate transmitting torque), which rises on the time theory of the first setup pressure value, to the greatest extent may be used
Can length, and to will cause operational mode switching time too long for overlong time, be easy to cause on driver's sense organ vehicle acceleration and deceleration or
The handling sensitivity decrease of person causes driver uncomfortable or frequent pushes pedals, therefore, the pressure of the hydraulic control clutch
From the first setup pressure value rise to the time rate of change of the second setup pressure value than from zero point rise to the first setup pressure value when
Between change rate it is big, it is preferably 3~4.5 times big, it is further preferably 4 times big.
S2) when the central electronic control unit ECU predicts that the vehicle will drive operational mode to cut by hybrid power
When being changed to pure electric vehicle driving operational mode, it is gradually reduced engine torque, while reducing hydraulic control clutch pressure, makes hydraulic control clutch
Device generates sliding, until hydraulic control clutch is fully disconnected；It is described while reducing engine torque and hydraulic control clutch pressure
Central electronic control unit ECU is based on engine torque and hydraulic control clutch pressure adjusts generator/motor output torque in real time,
To maintain wheel demand torque to keep constant or compared with minor swing.This advantageously reduces the impact discomfort of driver and passenger's sense organ
Feel, and reduces thus damage and service life reduction problem that component may cause.
Furthermore it is preferred that the 4th gear 17 and the gear ratio of second gear 13 are third gear 18 and first gear 16
2-2.5 times of gear ratio.This is conducive to the reducer gear group including planetary gear set with proper gear grade
It is not poor, be conducive in handoff procedure, gear shift position will not cause biggish power interruption discomfort to be felt.Furthermore the present invention is using unidirectional
Clutch, when input shaft clutch separates simultaneously with output shaft clutch, the Internal and external cycle of one-way clutch is in synchronous regime,
The transmission ratio of retarder is constant (being equivalent to reduction ratio when input shaft clutch combination and output shaft clutch separation state), vehicle
Current first reduction ratio gear is kept to move ahead, at this point, when retarder needs to be raised to second by first reduction ratio gear
When reduction ratio gear, output shaft clutch can execute combination after input shaft clutch is fully disconnected；Input shaft clutch is complete
It is complete disconnect after, the combination of output shaft clutch gradually make retarder it is gentle be increased to second reduction ratio gear；And works as and subtract
When fast device needs drop to first reduction ratio gear by second reduction ratio gear, it only need to export shaft clutch and gradually disconnect simultaneously
Input shaft clutch gradually combines, retarder it is gentle be switched to first reduction ratio gear.In entire reduction ratio handoff procedure
Remain that power compared with minor swing, reduces impact and sense of discomfort.
It should be noted that the switching of above-mentioned running mode and the switching of reduction ratio gear can anticipate according to vehicle drive
Figure and speed state are flexibly switched and are controlled, such as according to speed, driving intention or road conditions (such as mountain area, muddy road, city
City's road etc.), driving economy select a reduction ratio gear, then on the basis of the fixation gear, implement running mould
Formula switching control；It is of course also possible to according to speed, driving intention or road conditions (such as mountain area, muddy road, urban road),
The selected traveling operational mode of driving economy, then according to circumstances variation needs, and carries out reduction ratio gear switch control.Or
Person carries out the successive of both running mode and reduction ratio gear switch while converting control according to special circumstances.
The description above is for that can understand and apply the invention convenient for those skilled in the art.It is familiar with this field skill
The personnel of art obviously easily can make various modifications to these embodiments, and General Principle described herein is applied to it
In his embodiment without having to go through creative labor.Therefore, the present invention is not limited to embodiment here, those skilled in the art
Announcement according to the present invention, improvement and modification made without departing from the scope of the present invention all should protection scope of the present invention it
It is interior.
Claims (4)
1. a kind of new energy vehicle retarder system, the new energy vehicle retarder system includes: central electronic control unit
ECU, generator/motor, hydraulic control clutch, retarder, engine, detection sensing unit, electric energy storage device；
Hydraulic control clutch is used for the disconnection of selectivity as needed or combines engine and generator/motor, and is set
At the torque delivery value that can change hydraulic control clutch transmitting by the size of adjusting fluid control pressure；
Retarder is set to generator/motor downstream；The retarder includes being actively entered axis, first gear, the second tooth
Wheel, input shaft clutch, driven output shaft, third gear, the 4th gear, output shaft clutch, one-way clutch, hydraulic pump list
Member, planetary ring gear, planetary gear, planet carrier, sun gear, annular bearing, planet carrier output gear；The generator/motor 2 it is defeated
Shaft couples with the left end for being actively entered axis；The right end connection hydraulic pump unit for being actively entered axis；First tooth
Wheel, which is fixed at, to be actively entered on axis and is located on the left of hydraulic pump unit, and the second gear is rotatablely arranged at actively defeated
Enter on axis and be located at the left side of first gear；The input shaft clutch is located at the left side of second gear, the input shaft clutch
The outer ring clutch part of device is fixedly connected with the gear ring of second gear, the inner ring clutch part of the input shaft clutch and active
Input shaft is fixedly connected, and the inside and outside circle clutch part of the input shaft clutch 14 can be combined with each other or isolated connection；
4th gear is fixed on the left end of driven output shaft and is meshed with the second gear；The third gear can be rotated
Ground is set on driven output shaft and is located at the right side of the 4th gear and is meshed with first gear；The third gear with it is described
Planetary ring gear is fixedly connected, and the planetary ring gear is engaged with the planetary gear, and the planetary gear is engaged with the sun gear, described
Sun gear is fixed on the right end of the driven output shaft, and the output shaft clutch is located at the third gear and the sun
The outer ring clutch part of position between wheel, the output shaft clutch is fixedly connected with the planet carrier, the output shaft clutch
The inner ring clutch part of device is fixedly connected with the driven output shaft, the inside and outside circle clutch part of the output shaft clutch
Part can be combined with each other or isolated connection；The excircle of the planetary ring gear is rotatably fixed installation by the annular bearing
On the new energy vehicle；One end of the planet carrier connects the planet carrier output gear, the planet carrier output gear with
The engagement of axletree differential gear；The power of the planet carrier output gear passes through axletree differential gear, axletree differential
Device, axletree are transmitted to wheel 7；The outer ring of the one-way clutch is fixedly connected with the internal tooth hub of second gear, described unidirectional
The inner ring of clutch is fixedly connected with the axis that is actively entered；
The new energy vehicle retarder system further includes hydraulic control clutch control unit, motor control unit, and the detection passes
Feel unit, hydraulic pump unit, hydraulic control clutch control unit, motor control unit with central electronic control unit ECU signal
It connects and is controlled by central electronic control unit ECU；The central electronic control unit ECU is connect with engine signal, can be used
In adjusting engine torque and revolving speed；Hydraulic control clutch control unit is connect with hydraulic control clutch signal, can be used for adjusting hydraulic control
Clutch combination pressure and then the torque delivery value size for adjusting hydraulic control clutch transmitting；Motor control unit with power generation/it is electronic
The connection of machine signal, can be used for controlling generator/motor output torque and revolving speed；Central electronic control unit ECU and retarder are believed
Number connection, can be used for controlling retarder；Electric energy storage device is electrically connected with generator/motor；Central electronic control unit ECU and electricity
The connection of energy storage device signal, can be used for controlling the charge and discharge of electric energy storage device；
The detection sensing unit is used to detect vehicle running state, driver's mode of operation；
Central electronic control unit ECU can be operated according to the vehicle running state and driver of the detection sensing unit detection
The running mode that status predication will be applied；
The running mode include generator/motor be operated alone pure electric vehicle driving operational mode, engine and power generation/
The hybrid power that motor drives jointly drives operational mode；When hydraulic control clutch disconnects, operation mould is driven using pure electric vehicle
Formula drives operational mode using hybrid power when hydraulic control clutch is combined；
The new energy vehicle retarder system further include: in vehicle travel process, continuously obtained first with detection sensing unit
Vehicle running state and driver's operational status information are taken, the central electronic control unit ECU is adopted according to prefixed time interval
Sampling point samples the vehicle running state and driver's operational status information that the detection sensing unit obtains, and according to the vehicle
Running condition information determines the running mode of new energy vehicle described in current sampling point, the central electronic control unit
The running mode that the variation prediction for driver's operational status information that ECU is acquired according to neighbouring sample point will be applied, when
When driver's operational status information of acquisition changes, running central electronic control unit ECU current according to vehicle
Mode and the running mode that will be applied control the switching that vehicle carries out running mode: S1 in accordance with the following steps) when
The central electronic control unit ECU prediction vehicle will be driven operational mode to be switched to hybrid power driving operation by pure electric vehicle
When mode, increase the output torque of generator/motor, while increasing hydraulic control clutch pressure to the first setup pressure value, makes liquid
It controls clutch and generates sliding, to start engine；Engine torque is gradually increased after engine start, while continuing gradually to increase
Add the pressure of hydraulic control clutch, until make the second setup pressure value that hydraulic control clutch is completely combined, increase engine torque and
While increasing hydraulic control clutch pressure, the central electronic control unit ECU is based on engine torque and hydraulic control clutch pressure
Power adjusts generator/motor output torque in real time, to maintain wheel demand torque to keep constant；S2) when the central electronic control
When unit ECU prediction vehicle processed will be driven operational mode to be switched to pure electric vehicle driving operational mode by hybrid power, gradually subtract
Puffer torque, while reducing hydraulic control clutch pressure, so that hydraulic control clutch is generated sliding, until hydraulic control clutch is completely disconnected
It opens；While reducing engine torque and hydraulic control clutch pressure, the central electronic control unit ECU is turned round based on engine
Square and hydraulic control clutch pressure adjust generator/motor output torque in real time, to maintain wheel demand torque to keep constant.
2. new energy vehicle retarder system according to claim 1, which is characterized in that wherein, first setting
Pressure value is arranged to the torque delivery value transmitted when hydraulic control clutch pressure reaches first setup pressure value and is less than hair
The difference of electricity/motor available peak torque and wheel demand torque.
3. new energy vehicle retarder system according to claim 1, which is characterized in that the preferred hydraulic control clutch
Pressure rise to the first setting pressure from zero point from the time rate of change ratio that the first setup pressure value rises to the second setup pressure value
The time rate of change of value is 3 to 4.5 times big.
4. new energy vehicle retarder system according to claim 1, which is characterized in that preferred, the 4th gear
Gear ratio with second gear is 2-2.5 times of the gear ratio of third gear and first gear 16.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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